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Exelon

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FY2018 Annual Report · Exelon
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
    FORM 10-K

ý

¨

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Fiscal Year Ended December 31, 2018

  or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission 
File Number

Name of Registrant; State or Other Jurisdiction of Incorporation; Address of Principal Executive Offices; and Telephone
Number

IRS Employer
Identification Number

1-16169

  EXELON CORPORATION

(a Pennsylvania corporation) 
10 South Dearborn Street 
P.O. Box 805379 
Chicago, Illinois 60680-5379 
(800) 483-3220

333-85496

  EXELON GENERATION COMPANY, LLC
(a Pennsylvania limited liability company) 
300 Exelon Way 
Kennett Square, Pennsylvania 19348-2473 
(610) 765-5959

1-1839

  COMMONWEALTH EDISON COMPANY

000-16844

(an Illinois corporation) 
440 South LaSalle Street 
Chicago, Illinois 60605-1028 
(312) 394-4321

  PECO ENERGY COMPANY
(a Pennsylvania corporation) 
P.O. Box 8699 
2301 Market Street 
Philadelphia, Pennsylvania 19101-8699 
(215) 841-4000

  23-2990190

  23-3064219

  36-0938600

  23-0970240

1-1910

  BALTIMORE GAS AND ELECTRIC COMPANY

  52-0280210

(a Maryland corporation) 
2 Center Plaza 
110 West Fayette Street 
Baltimore, Maryland 21201-3708 
(410) 234-5000

001-31403

  PEPCO HOLDINGS LLC

(a Delaware limited liability company) 
701 Ninth Street, N.W. 
Washington, District of Columbia 20068 
(202) 872-2000

001-01072

  POTOMAC ELECTRIC POWER COMPANY

(a District of Columbia and Virginia corporation) 
701 Ninth Street, N.W. 
Washington, District of Columbia 20068 
(202) 872-2000

001-01405

  DELMARVA POWER & LIGHT COMPANY

(a Delaware and Virginia corporation) 
500 North Wakefield Drive 
Newark, Delaware 19702 
(202) 872-2000

001-03559

  ATLANTIC CITY ELECTRIC COMPANY

(a New Jersey corporation) 
500 North Wakefield Drive 
Newark, Delaware 19702 
(202) 872-2000

  52-2297449

  53-0127880

  51-0084283

  21-0398280

 
 
 
   
   
 
 
   
 
   
   
 
 
   
 
   
   
 
 
   
 
   
   
 
 
   
 
   
   
 
 
   
 
   
   
 
 
   
 
   
   
 
 
   
 
   
   
 
 
   
 
   
   
 
 
   
Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class
EXELON CORPORATION:

Common Stock, without par value
Series A Junior Subordinated Debentures
Corporate Units

PECO ENERGY COMPANY:

Trust Receipts of PECO Energy Capital Trust III, each representing a 7.38% Cumulative Preferred Security, Series D, $25 stated
value, issued by PECO Energy Capital, L.P. and unconditionally guaranteed by PECO Energy Company

Securities registered pursuant to Section 12(g) of the Act:

Name of Each Exchange on Which
Registered

New York and Chicago
New York

New York

New York

Title of Each Class
COMMONWEALTH EDISON COMPANY:

Common Stock Purchase Warrants, 1971 Warrants and Series B Warrants
POTOMAC ELECTRIC POWER COMPANY:

Common Stock, $0.01 par value
DELMARVA POWER & LIGHT COMPANY:

Common Stock, $2.25 par value
ATLANTIC CITY ELECTRIC COMPANY:

Common Stock, $3.00 par value

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

Exelon Corporation
Exelon Generation Company, LLC
Commonwealth Edison Company
PECO Energy Company
Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

      Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.

Exelon Corporation
Exelon Generation Company, LLC
Commonwealth Edison Company
PECO Energy Company
Baltimore Gas and Electric Company
Pepco Holdings LLC
Potomac Electric Power Company
Delmarva Power & Light Company
Atlantic City Electric Company

Yes   x
Yes   x
Yes   x
Yes   x
Yes   x

Yes   x

Yes   o

Yes   o

Yes   o

Yes   o   
Yes   o   
Yes   o   
Yes   o   
Yes   o   
Yes   o   
Yes   o   
Yes   o   
Yes   o   

No   o
No   o
No   o
No   o
No   o

No   o

No   x

No   x

No   x

No   x
No   x
No   x
No   x
No   x
No   x
No   x
No   x
No   x

      Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding
12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes   ý
    No   ¨

      Indicate by check mark whether the registrant has submitted electronically and posted on its corporate web site, if any, every Interactive Data File required to be submitted
and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to
submit and post such files).    Yes   ý
    No   ¨

  
  
 
  
  
 
  
 
  
  
  
  
  
  
 
 
 
 
      Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrants’
knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   ý

      Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth
company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Exelon Corporation

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

Large Accelerated
Filer

x

Accelerated Filer

  Non-accelerated Filer

Smaller Reporting
Company

Emerging Growth
Company

x

x

x

x

x

x

x

x

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised

financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes   o
  No   x

The estimated aggregate market value of the voting and non-voting common equity held by nonaffiliates of each registrant as of June 30, 2018 was as follows:

Exelon Corporation Common Stock, without par value
Exelon Generation Company, LLC
Commonwealth Edison Company Common Stock, $12.50 par value
PECO Energy Company Common Stock, without par value
Baltimore Gas and Electric Company, without par value

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

      The number of shares outstanding of each registrant’s common stock as of January 31, 2019 was as follows:

Exelon Corporation Common Stock, without par value
Exelon Generation Company, LLC
Commonwealth Edison Company Common Stock, $12.50 par value
PECO Energy Company Common Stock, without par value
Baltimore Gas and Electric Company Common Stock, without par value

Pepco Holdings LLC

Potomac Electric Power Company Common Stock, $0.01 par value

Delmarva Power & Light Company Common Stock, $2.25 par value

Atlantic City Electric Company Common Stock, $3.00 par value

   $41,118,095,431
   Not applicable
   No established market
   None
   None
  Not applicable
  None
  None
  None

   969,745,933
   Not applicable
   127,021,331
   170,478,507
   1,000
  Not applicable
  100
  1,000
  8,546,017

Documents Incorporated by Reference
Portions of the Exelon Proxy Statement for the 2019 Annual Meeting of
Shareholders and the Commonwealth Edison Company 2019 Information Statement are
incorporated by reference in Part III.

      Exelon Generation Company, LLC, PECO Energy Company, Baltimore Gas and Electric Company, Pepco Holdings LLC, Potomac Electric Power Company, Delmarva
Power & Light Company and Atlantic City Electric Company meet the conditions set forth in General Instruction I(1)(a) and (b) of Form 10-K and are therefore filing this Form in
the reduced disclosure format.

 
 
 
 
   
   
   
   
 
   
 
   
   
 
   
 
   
   
 
   
 
   
   
 
   
 
   
   
 
   
 
   
   
 
   
 
   
   
 
   
 
   
   
 
   
 
   
   
TABLE OF CONTENTS

Page No.

GLOSSARY OF TERMS AND ABBREVIATIONS

FILING FORMAT

CAUTIONARY STATEMENTS REGARDING FORWARD-LOOKING INFORMATION

WHERE TO FIND MORE INFORMATION

PART I

ITEM 1.

BUSINESS

General

Exelon Generation Company, LLC

Utility Operations

Employees

Environmental Regulation

Executive Officers of the Registrants

RISK FACTORS

UNRESOLVED STAFF COMMENTS

PROPERTIES

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

LEGAL PROCEEDINGS

MINE SAFETY DISCLOSURES

MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES
OF EQUITY SECURITIES

ITEM 1A.

ITEM 1B.

ITEM 2.

ITEM 3.

ITEM 4.

PART II

ITEM 5.

ITEM 6.

SELECTED FINANCIAL DATA

Exelon Corporation

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

1

6

6

6

7

7

8

17

21

21

26

31

49

50

50

55

55

56

57

58

59

60

60

61

65

65

66

66

67

68

68

69

70

70

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Exelon Corporation

Executive Overview

Financial Results of Operations

Significant 2018 Transactions and Recent Developments

Exelon's Strategy and Outlook for 2019 and Beyond

Liquidity Considerations

Other Key Business Drivers and Management Strategies

Critical Accounting Policies and Estimates

Results of Operations

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

Liquidity and Capital Resources

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Contractual Obligations and Off-Balance Sheet Arrangements

Exelon Corporation

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

Page No.

72

72

72

73

78

83

85

85

91

102

103

111

115

119

122

124

128

133

136

156

163

163

171

173

175

177

179

181

183

185

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Exelon Corporation

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

Combined Notes to Consolidated Financial Statements

1. Significant Accounting Policies

2. Variable Interest Entities

3. Revenue from Contracts with Customers

4. Regulatory Matters

5. Mergers, Acquisitions and Dispositions

6. Property, Plant and Equipment

7. Impairment of Long-Lived Assets and Intangibles

8. Early Plant Retirements

9. Jointly Owned Electric Utility Plant

10. Intangible Assets

11. Fair Value of Financial Assets and Liabilities

12. Derivative Financial Instruments

13. Debt and Credit Agreements

14. Income Taxes

15. Asset Retirement Obligations

16. Retirement Benefits

17. Severance

18. Shareholders' Equity

19. Stock-Based Compensation Plans

20. Earnings Per Share

21. Changes in Accumulated Other Comprehensive Income

22. Commitments and Contingencies

23. Supplemental Financial Information

24. Segment Information

25. Related Party Transactions

26. Quarterly Data

27. Subsequent Events

ITEM 9.

ITEM 9A.

ITEM 9B.

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

CONTROLS AND PROCEDURES

OTHER INFORMATION

Page No.

187

212

217

222

227

232

237

242

247

252

257

258

272

279

283

302

309

315

317

321

322

326

347

360

374

387

392

410

412

413

418

419

423

436

450

463

475

478

479

479

479

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PART III

ITEM 10.

ITEM 11.

ITEM 12.

ITEM 13.

ITEM 14.

PART IV

ITEM 15.

ITEM 16.

SIGNATURES

DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

EXECUTIVE COMPENSATION

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER
MATTERS

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

PRINCIPAL ACCOUNTING FEES AND SERVICES

EXHIBITS, FINANCIAL STATEMENT SCHEDULES

FORM 10-K SUMMARY

Exelon Corporation

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

Page No.

480

481

482

483

484

485

541

542

542

543

544

545

546

547

548

549

550

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exelon Corporation and Related Entities

GLOSSARY OF TERMS AND ABBREVIATIONS

Exelon

Generation

ComEd

PECO

BGE

  Exelon Corporation

  Exelon Generation Company, LLC

  Commonwealth Edison Company

  PECO Energy Company

  Baltimore Gas and Electric Company

Pepco Holdings or PHI

   Pepco Holdings LLC (formerly Pepco Holdings, Inc.)

Pepco

DPL

ACE

Registrants

Utility Registrants

Legacy PHI

ACE Funding or ATF

Antelope Valley

BondCo

BSC

CENG

Constellation

EEDC

EGR IV

EGRP

EGTP

Entergy

   Potomac Electric Power Company

   Delmarva Power & Light Company

   Atlantic City Electric Company

  Exelon, Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE, collectively

  ComEd, PECO, BGE, Pepco, DPL and ACE, collectively

  PHI, Pepco, DPL, ACE, PES and PCI collectively

   Atlantic City Electric Transition Funding LLC

  Antelope Valley Solar Ranch One

  RSB BondCo LLC

  Exelon Business Services Company, LLC

  Constellation Energy Nuclear Group, LLC

  Constellation Energy Group, Inc.

  Exelon Energy Delivery Company, LLC

  ExGen Renewables IV, LLC

  ExGen Renewables Partners, LLC

  ExGen Texas Power, LLC

  Entergy Nuclear FitzPatrick, LLC

Exelon Corporate

  Exelon in its corporate capacity as a holding company

Exelon Transmission Company

  Exelon Transmission Company, LLC

Exelon Wind

FitzPatrick

PCI

PEC L.P.

PECO Trust III

PECO Trust IV

  Exelon Wind, LLC and Exelon Generation Acquisition Company, LLC

  James A. FitzPatrick nuclear generating station

   Potomac Capital Investment Corporation and its subsidiaries

  PECO Energy Capital, L.P.

  PECO Capital Trust III

  PECO Energy Capital Trust IV

Pepco Energy Services or PES

   Pepco Energy Services, Inc. and its subsidiaries

PHI Corporate

  PHI in its corporate capacity as a holding company

PHISCO

RPG

SolGen

TMI

UII

  PHI Service Company

  Renewable Power Generation

  SolGen, LLC

  Three Mile Island nuclear facility

  Unicom Investments, Inc.

1

 
Table of Contents

Other Terms and Abbreviations

AEC

AESO

AFUDC

AGE

AMI

AMP

AOCI

ARC

ARO

ARP

ASA

BGS

CAISO

CAP

CCGTs

CERCLA

CES

Clean Air Act

Clean Water Act

Conectiv

Conectiv Energy

ConEdison Solutions

CSAPR

CTA

D.C. Circuit Court

DC PLUG

DCPSC

DDOT

DOE

DOEE

DOJ

DPSC

DSP

DSP Program

EDF

EIMA

EmPower

EPA

GLOSSARY OF TERMS AND ABBREVIATIONS

Alternative Energy Credit that is issued for each megawatt hour of generation from a qualified
alternative energy source

  Alberta Electric Systems Operator

  Allowance for Funds Used During Construction

  Albany Green Energy Project

  Advanced Metering Infrastructure

  Advanced Metering Program

  Accumulated Other Comprehensive Income

  Asset Retirement Cost

  Asset Retirement Obligation

  Alternative Revenue Program

  Asset Sale Agreement

   Basic Generation Service

  California ISO

  Customer Assistance Program

  Combined-Cycle gas turbines

  Comprehensive Environmental Response, Compensation and Liability Act of 1980, as amended

  Clean Energy Standard

  Clean Air Act of 1963, as amended

  Federal Water Pollution Control Amendments of 1972, as amended

   Conectiv, LLC, a wholly owned subsidiary of PHI and the parent of DPL and ACE during the

Predecessor periods

   Conectiv Energy Holdings, Inc. and substantially all of its subsidiaries, which were sold to Calpine

in July 2010

The competitive retail electricity and natural gas business of Consolidated Edison Solutions, Inc., a
subsidiary of Consolidated Edison, Inc

  Cross-State Air Pollution Rule

   Consolidated tax adjustment

  United States Court of Appeals for the District of Columbia Circuit

  District of Columbia Power Line Undergrounding Initiative

   District of Columbia Public Service Commission

  District Department of Transportation

  United States Department of Energy

  Department of Energy & Environment

  United States Department of Justice

   Delaware Public Service Commission

  Default Service Provider

  Default Service Provider Program

  Electricite de France SA and its subsidiaries

  Energy Infrastructure Modernization Act (Illinois Senate Bill 1652 and Illinois House Bill 3036)

   A Maryland demand-side management program for Pepco and DPL

  United States Environmental Protection Agency

2

 
 
 
 
Table of Contents

Other Terms and Abbreviations

EPSA

ERCOT

ERISA

EROA

FASB

FEJA

FERC

FRCC

GAAP

GCR

GHG

GSA

GWh

IBEW

ICC

ICE

IIP

GLOSSARY OF TERMS AND ABBREVIATIONS

  Electric Power Supply Association

  Electric Reliability Council of Texas

  Employee Retirement Income Security Act of 1974, as amended

  Expected Rate of Return on Assets

  Financial Accounting Standards Board

Illinois Public Act 99-0906 or Future Energy Jobs Act

  Federal Energy Regulatory Commission

  Florida Reliability Coordinating Council

  Generally Accepted Accounting Principles in the United States

   Gas Cost Rate

  Greenhouse Gas

  Generation Supply Adjustment

  Gigawatt hour

International Brotherhood of Electrical Workers

Illinois Commerce Commission

Intercontinental Exchange

Infrastructure Investment Program

Illinois EPA

Illinois Environmental Protection Agency

Illinois Settlement Legislation

  Legislation enacted in 2007 affecting electric utilities in Illinois

Integrys

IPA

IRC

IRS

ISO

ISO-NE

ISO-NY

kV

kW

kWh

LIBOR

LLRW

LNG

LTIP

MAPP

MATS

MBR

MDE

MDPSC

MGP

MISO

mmcf

Moody’s

Integrys Energy Services, Inc.

Illinois Power Agency

Internal Revenue Code

Internal Revenue Service

Independent System Operator

ISO New England Inc.

ISO New York

  Kilovolt

  Kilowatt

  Kilowatt-hour

  London Interbank Offered Rate

  Low-Level Radioactive Waste

  Liquefied Natural Gas

  Long-Term Incentive Plan

   Mid-Atlantic Power Pathway

  U.S. EPA Mercury and Air Toxics Rule

  Market Based Rates Incentive

  Maryland Department of the Environment

  Maryland Public Service Commission

  Manufactured Gas Plant

  Midcontinent Independent System Operator, Inc.

  Million Cubic Feet

  Moody’s Investor Service

3

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Other Terms and Abbreviations

MOPR

MRV

MW

MWh

n.m.

NAAQS

NAV

NDT

NEIL

NERC

NGS

NJBPU

NJDEP

NLRB

GLOSSARY OF TERMS AND ABBREVIATIONS

  Minimum Offer Price Rule

  Market-Related Value

  Megawatt

  Megawatt hour

  not meaningful

  National Ambient Air Quality Standards

  Net Asset Value

  Nuclear Decommissioning Trust

  Nuclear Electric Insurance Limited

  North American Electric Reliability Corporation

  Natural Gas Supplier

   New Jersey Board of Public Utilities

  New Jersey Department of Environmental Protection

  National Labor Relations Board

Non-Regulatory Agreements Units

Nuclear generating units or portions thereof whose decommissioning-related activities are not
subject to contractual elimination under regulatory accounting

NOSA

NPDES

NRC

NSPS

NWPA

NYMEX

NYPSC

OCI

OIESO

OPC

OPEB

PA DEP

PAPUC

PCB

PGC

PJM

POLR

POR

PPA

  Nuclear Operating Services Agreement

  National Pollutant Discharge Elimination System

  Nuclear Regulatory Commission

  New Source Performance Standards

  Nuclear Waste Policy Act of 1982

  New York Mercantile Exchange

  New York Public Service Commission

  Other Comprehensive Income

  Ontario Independent Electricity System Operator

   Office of People’s Counsel

  Other Postretirement Employee Benefits

  Pennsylvania Department of Environmental Protection

  Pennsylvania Public Utility Commission

  Polychlorinated Biphenyl

  Purchased Gas Cost Clause

  PJM Interconnection, LLC

  Provider of Last Resort

  Purchase of Receivables

  Power Purchase Agreement

Price-Anderson Act

Preferred Stock

  Price-Anderson Nuclear Industries Indemnity Act of 1957

   Originally issued shares of non-voting, non-convertible and non-transferable Series A preferred

PRP

PSEG

PV

RCRA

stock, par value $0.01 per share

  Potentially Responsible Parties

  Public Service Enterprise Group Incorporated

  Photovoltaic

  Resource Conservation and Recovery Act of 1976, as amended

4

 
 
 
Table of Contents

Other Terms and Abbreviations

REC

Regulatory Agreement Units

GLOSSARY OF TERMS AND ABBREVIATIONS

Renewable Energy Credit which is issued for each megawatt hour of generation from a qualified
renewable energy source

Nuclear generating units or portions thereof whose decommissioning-related activities are subject
to contractual elimination under regulatory accounting

RES

RFP

Rider

RGGI

RMC

RNF

ROE

RPM

RPS

RSSA

RTEP

RTO

S&P

SEC

SERC

SGIG

SILO

SNF

SOS

SPFPA

SPP

TCJA

  Retail Electric Suppliers

  Request for Proposal

  Reconcilable Surcharge Recovery Mechanism

  Regional Greenhouse Gas Initiative

  Risk Management Committee

  Revenue Net of Purchased Power and Fuel Expense

   Return on equity

  PJM Reliability Pricing Model

  Renewable Energy Portfolio Standards

  Reliability Support Services Agreement

  Regional Transmission Expansion Plan

  Regional Transmission Organization

  Standard & Poor’s Ratings Services

  United States Securities and Exchange Commission

  SERC Reliability Corporation (formerly Southeast Electric Reliability Council)

  Smart Grid Investment Grant from DOE

  Sale-In, Lease-Out

  Spent Nuclear Fuel

  Standard Offer Service

  Security, Police and Fire Professionals of America

  Southwest Power Pool

Tax Cuts and Jobs Act

Transition Bond Charge

   Revenue ACE receives, and pays to ACE Funding, to fund the principal and interest payments on

Transition Bonds

Upstream

VIE

WECC

ZEC

ZES

Transition Bonds and related taxes, expenses and fees

   Transition Bonds issued by ACE Funding

  Natural gas and oil exploration and production activities

  Variable Interest Entity

  Western Electric Coordinating Council

  Zero Emission Credit

  Zero Emission Standard

5

 
 
 
 
 
Table of Contents

FILING FORMAT

This  combined  Annual  Report  on  Form  10-K  is  being  filed  separately  by  Exelon  Corporation,  Exelon  Generation  Company,  LLC,  Commonwealth  Edison
Company,  PECO Energy Company,  Baltimore Gas and Electric Company,  Pepco Holdings LLC, Potomac  Electric Power Company,  Delmarva Power & Light
Company and Atlantic City Electric Company (Registrants). Information contained herein relating to any individual Registrant is filed by such Registrant on its
own behalf. No Registrant makes any representation as to information relating to any other Registrant.

CAUTIONARY STATEMENTS REGARDING FORWARD-LOOKING INFORMATION

This Report contains certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks and
uncertainties. The factors that could cause actual results to differ materially from the forward-looking statements made by the Registrants include those factors
discussed  herein,  including  those  factors  discussed  with  respect  to  the  Registrants  discussed  in  (a)  ITEM  1A.  Risk  Factors,  (b)  ITEM  7.  Management’s
Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations  and  (c)  ITEM  8.  Financial  Statements  and  Supplementary  Data:  Note  22  ,
Commitments and Contingencies; and (d) other factors discussed in filings with the SEC by the Registrants. Readers are cautioned not to place undue reliance
on these forward-looking statements, which apply only as of the date of this Report. None of the Registrants undertakes any obligation to publicly release any
revision to its forward-looking statements to reflect events or circumstances after the date of this Report.

WHERE TO FIND MORE INFORMATION

The  SEC  maintains  an  Internet  site  at  www.sec.gov  that  contains  reports,  proxy  and  information  statements,  and  other  information  that  the  Registrants  file
electronically  with  the  SEC.  These  documents  are  also  available  to  the  public  from  commercial  document  retrieval  services  and  the  Registrants’  website  at
www.exeloncorp.com. Information contained on the Registrants’ website shall not be deemed incorporated into, or to be a part of, this Report.

6

Table of Contents

ITEM 1.

BUSINESS

General

PART I

Corporate Structure and Business and Other Information

Exelon, incorporated in Pennsylvania in February 1999, is a utility services holding company engaged, through Generation, in the energy generation business,
and  through  ComEd,  PECO,  BGE,  PHI,  Pepco,  DPL  and  ACE  in  the  energy  delivery  businesses  discussed  below.  Exelon’s  principal  executive  offices  are
located at 10 South Dearborn Street, Chicago, Illinois 60603.

Name of Registrant

Exelon Generation
Company, LLC

State/Jurisdiction and

Year of Incorporation

Pennsylvania (2000)

Business

Generation, physical delivery and marketing of power
across multiple geographical regions through its
customer-facing business, Constellation, which sells
electricity to both wholesale and retail customers.
Generation also sells natural gas, renewable energy
and other energy-related products and services.

Service

Territories

Address of Principal

Executive Offices

Six reportable segments: Mid-Atlantic,
Midwest, New England, New York,
ERCOT and Other Power Regions

300 Exelon Way,
Kennett Square, Pennsylvania 19348

Commonwealth Edison
Company

Illinois (1913)

Purchase and regulated retail sale of electricity

Northern Illinois, including the City of
Chicago

440 South LaSalle Street,
Chicago, Illinois 60605

Transmission and distribution of electricity to retail
customers

PECO Energy Company

Pennsylvania (1929)

Purchase and regulated retail sale of electricity and
natural gas

Southeastern Pennsylvania, including the
City of Philadelphia (electricity)

2301 Market Street,
Philadelphia, Pennsylvania 19103

Transmission and distribution of electricity and
distribution of natural gas to retail customers

Pennsylvania counties surrounding the
City of Philadelphia (natural gas)

Baltimore Gas and
Electric Company

Maryland (1906)

Purchase and regulated retail sale of electricity and
natural gas

Central Maryland, including the City of
Baltimore (electricity and natural gas)

110 West Fayette Street,
Baltimore, Maryland 21201

Transmission and distribution of electricity and
distribution of natural gas to retail customers

Pepco Holdings LLC

Delaware (2016)

Utility services holding company engaged, through its
reportable segments Pepco, DPL and ACE

Service Territories of Pepco, DPL and
ACE

701 Ninth Street, N.W., 
Washington, D.C. 20068

Potomac Electric 
Power Company

   District of Columbia

   Purchase and regulated retail sale of electricity

   District of Columbia and Major portions of

   701 Ninth Street, N.W.,

(1896)
Virginia (1949)

Montgomery and Prince George’s
Counties, Maryland

Washington, D.C. 20068

Transmission and distribution of electricity to retail
customers

Delmarva Power & Light
Company

Delaware (1909)
Virginia (1979)

Purchase and regulated retail sale of electricity and
natural gas

Portions of Delaware and Maryland
(electricity)

500 North Wakefield Drive,
Newark, Delaware 19702

Transmission and distribution of electricity and
distribution of natural gas to retail customers

Portions of New Castle County, Delaware
(natural gas)

Atlantic City Electric
Company

New Jersey (1924)

Purchase and regulated retail sale of electricity

Portions of Southern New Jersey

500 North Wakefield Drive,
Newark, Delaware 19702

Transmission and distribution of electricity to retail
customers

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Business Services

Through  its  business  services  subsidiary  BSC,  Exelon  provides  its  operating  subsidiaries  with  a  variety  of  corporate  governance  support  services  including
corporate  strategy  and  development,  legal,  human  resources,  information  technology,  finance,  real  estate,  security,  corporate  communications  and  supply  at
cost.  The  costs  of  these  services  are  directly  charged  or  allocated  to  the  applicable  operating  segments.  The  services  are  provided  pursuant  to  service
agreements. Additionally, the results of Exelon’s corporate operations include interest costs and income from various investment and financing activities.

PHISCO, a wholly owned subsidiary of PHI, provides  a variety of support  services at cost,  including legal, finance, engineering,  distribution and  transmission
planning, asset management, system operations, and power procurement, to PHI and its operating subsidiaries. These services are directly charged or allocated
pursuant to service agreements among PHISCO and the participating operating subsidiaries.

Merger with Pepco Holdings, Inc. (Exelon)

On March 23, 2016 , Exelon completed the merger contemplated by the Merger Agreement among Exelon, Purple Acquisition Corp., a wholly owned subsidiary
of Exelon (Merger Sub) and PHI. As a result of that merger, Merger Sub was merged into PHI (the PHI Merger) with PHI surviving as a wholly owned subsidiary
of Exelon and EEDC, a wholly owned subsidiary of Exelon which also owns Exelon's interests in ComEd, PECO and BGE (through a special purpose subsidiary
in the case of BGE). Following the completion of the PHI Merger, Exelon and PHI completed a series of internal corporate organization restructuring transactions
resulting in the transfer of PHI’s unregulated business interests to Exelon and Generation and the transfer of PHI, Pepco, DPL and ACE to a special purpose
subsidiary  of  EEDC.  See  Note  5  —  Mergers,  Acquisitions  and  Dispositions  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional
information.

Generation

Generation, one of the largest competitive electric generation companies in the United States as measured by owned and contracted MW, physically delivers
and  markets  power  across  multiple  geographic  regions  through  its  customer-facing  business,  Constellation.  Constellation  sells  electricity  and  natural  gas,
including  renewable  energy,  in  competitive  energy  markets  to  both  wholesale  and  retail  customers.  Generation  leverages  its  energy  generation  portfolio  to
ensure  delivery  of  energy  to  both  wholesale  and  retail  customers  under  long-term  and  short-term  contracts,  and  in  wholesale  power  markets.  Generation
operates in well-developed energy markets and employs an integrated hedging strategy to manage commodity price volatility. Generation's fleet also provides
geographic and supply source diversity. Generation’s customers include distribution utilities, municipalities, cooperatives, financial institutions, and commercial,
industrial,  governmental,  and  residential  customers  in  competitive  markets.  Generation’s  customer-facing  activities  foster  development  and  delivery  of  other
innovative energy-related products and services for its customers.

Generation is a public utility under the Federal Power Act and is subject to FERC’s exclusive ratemaking jurisdiction over wholesale sales of electricity and the
transmission of electricity in interstate commerce. Under the Federal Power Act, FERC has the authority to grant or deny market-based rates for sales of energy,
capacity  and  ancillary  services  to  ensure  that  such  sales  are  just  and  reasonable.  FERC’s  jurisdiction  over  ratemaking  includes  the  authority  to  suspend  the
market-based  rates  of  utilities  and  set  cost-based  rates  should  FERC  find  that  its  previous  grant  of  market-based  rates  authority  is  no  longer  just  and
reasonable.  Other  matters  subject  to  FERC  jurisdiction  include,  but  are  not  limited  to,  third-party  financings;  review  of  mergers;  dispositions  of  jurisdictional
facilities  and  acquisitions  of  securities  of  another  public  utility  or  an  existing  operational  generating  facility;  affiliate  transactions;  intercompany  financings  and
cash  management  arrangements;  certain  internal  corporate  reorganizations;  and  certain  holding  company  acquisitions  of  public  utility  and  holding  company
securities.

RTOs and ISOs exist in a number of regions to provide transmission service across multiple transmission systems. FERC has approved PJM, MISO, ISO-NE
and  SPP  as  RTOs  and  CAISO  and  ISO-NY  as  ISOs.  These  entities  are  responsible  for  regional  planning,  managing  transmission  congestion,  developing
wholesale markets for energy and capacity, maintaining reliability, market monitoring, the scheduling of physical power sales brokered through ICE and NYMEX
and  the  elimination  or reduction  of redundant  transmission  charges  imposed  by  multiple transmission  providers  when wholesale customers  take  transmission
service across several transmission systems.

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ERCOT is not subject to regulation by FERC but performs a similar function in Texas to that performed by RTOs in markets regulated by FERC.

Specific operations of Generation are also subject to the jurisdiction of various other Federal, state, regional and local agencies, including the NRC and Federal
and state environmental protection agencies. Additionally, Generation is subject to NERC mandatory reliability standards, which protect the nation’s bulk power
system against potential disruptions from cyber and physical security breaches.

CENG

Generation owns a 50.01% interest in CENG, a joint venture with EDF. CENG is governed by a board of ten directors, five of which are appointed by Generation
and five by EDF. CENG owns a total of five nuclear generating facilities on three sites, Calvert Cliffs, R.E. Ginna (Ginna) and Nine Mile Point. CENG’s ownership
share in the total capacity of these units is 4,041 MW. See ITEM 2. PROPERTIES for additional information on these sites.

Generation and EDF entered into a Put Option Agreement on April 1, 2014, pursuant to which EDF has the option, exercisable beginning on January 1, 2016
and thereafter until June 30, 2022, to sell its 49.99% interest in CENG to Generation for a fair market value price determined by agreement of the parties, or
absent  agreement,  a  third-party  arbitration  process.  The  appraisers  determining  fair  market  value  of  EDF’s  49.99%  interest  in  CENG  under  the  Put  Option
Agreement are instructed to take into account all rights and obligations under the CENG Operating Agreement, including Generation’s rights with respect to any
unpaid  aggregate  preferred  distributions  and  the  related  return,  and  the  value  of  Generation’s  rights  to  other  distributions.  In  addition,  under  limited
circumstances, the period for exercise of the put option may be extended for 18 months. In order to exercise its option, EDF must give 60-days advance written
notice to Generation stating that it is exercising its option. To date, EDF has not given notice to Generation that it is exercising its option.

Exelon  and  Generation  record  all  assets,  liabilities  and  EDF’s  noncontrolling  interests  in  CENG  on  a  fully  consolidated  basis  in  Exelon’s  and  Generation’s
Consolidated Balance Sheets. See Note 2 — Variable Interest Entities of the Combined Notes to Consolidated Financial Statements for additional information
regarding the CENG consolidation.

Acquisitions

Handley Generating Station

On April 4, 2018, Generation acquired the Handley Generating Station in conjunction with the EGTP Chapter 11 proceedings for a total purchase price of $62
million. See EGTP in the Dispositions section below for additional information on EGTP's November 7, 2017 bankruptcy filing.

FitzPatrick

On  March  31,  2017,  Generation  acquired  the  838  MW  single-unit  FitzPatrick  plant  located  in  Scriba,  New  York  from  Entergy  for  a  total  purchase  price
consideration of $289 million , resulting in an after-tax bargain purchase gain of $233 million in 2017.

ConEdison Solutions

On  September  1,  2016,  Generation  acquired  ConEdison  Solutions  for  a  purchase  price  of  $257  million,  including  net  working  capital  of  $204  million.  The
renewable energy, sustainable services and energy efficiency businesses of ConEdison were excluded from the transaction.

Integrys Energy Services, Inc.

On  November  1,  2014,  Generation  acquired  the  competitive  retail  electric  and  natural  gas  business  activities  of  Integrys  Energy  Group,  Inc.  through  the
purchase of all of the stock of its wholly owned subsidiary, Integrys Energy Services, Inc. (Integrys) for a purchase price of $ 332 million , including net working
capital. The generation and solar asset businesses of Integrys were excluded from the transaction.

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Dispositions

EGTP

On November 7, 2017, EGTP and all of its wholly owned subsidiaries filed voluntary petitions for relief under Chapter 11 of Title 11 of the United States Code in
the  United  States  Bankruptcy  Court  for  the  District  of  Delaware.  As  a  result  of  the  bankruptcy  filing,  EGTP’s  assets  and  liabilities  were  deconsolidated  from
Exelon and Generation's consolidated financial statements. The Chapter 11 bankruptcy proceedings were finalized on April 17, 2018, resulting in the ownership
of EGTP assets (other than the Handley Generating Station) being transferred to EGTP's lenders.

Asset Dispositions

During 2015 and 2014, Generation sold certain generating assets with total pre-tax proceeds of $ 1.8 billion (after-tax proceeds of approximately $1.4 billion ).
Proceeds were used primarily to finance a portion of the acquisition of PHI.

See Note 5 — Mergers, Acquisitions and Dispositions and Note 7 — Impairment of Long-Lived Assets and Intangibles of the Combined Notes to Consolidated
Financial Statements for additional information on acquisitions and dispositions.

Generating Resources

At December 31, 2018 , the generating resources of Generation consisted of the following:

Type of Capacity

Owned generation assets (a)(b)

Nuclear

Fossil (primarily natural gas and oil)

       Renewable (c)

Owned generation assets

Long-term power purchase contracts (d)

Total generating resources

MW

19,713

9,547

3,203

32,463

5,184

37,647

__________
(a) See “Fuel” for sources of fuels used in electric generation.
(b) Net generation capacity is stated at proportionate ownership share. See ITEM 2. PROPERTIES —Generation for additional information.
(c)
(d) Electric supply procured under site specific agreements.

Includes wind, hydroelectric, solar and biomass generating assets.

Generation  has  six  reportable  segments,  Mid-Atlantic,  Midwest,  New  England,  New  York,  ERCOT  and  Other  Power  Regions,  representing  the  different
geographical areas in which Generation’s generating resources are located and Generation's customer-facing activities are conducted.

• Mid-Atlantic represents operations in the eastern half of PJM, which includes Pennsylvania, New Jersey, Maryland, Virginia, West Virginia, Delaware, the

District of Columbia and parts of North Carolina (approximately 34% of capacity).

• Midwest represents operations in the western half of PJM and the United States footprint of MISO, excluding MISO’s Southern Region (approximately

37% of capacity).

•

•

•

•

New England represents operations within ISO-NE (approximately 7% of capacity).

New York represents operations within ISO-NY (approximately 6% of capacity).

ERCOT represents operations within Electric Reliability Council of Texas (approximately 11% of capacity).

Other Power Regions represents Canada, South and West (approximately 5% of capacity).

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During the first quarter of 2019, due to a change in economics in our New England region, Generation is changing the way that information is reviewed by the
CODM.  The  New  England  region  will  no  longer  be  regularly  reviewed  as  a  separate  region  by  the  CODM  nor  will  it  be  presented  separately  in  any  external
information  presented  to  third  parties.  Information  for  the  New  England  region  will  be  reviewed  by  the  CODM  as  part  of  Other  Power  Regions.  As  a  result,
beginning in the first quarter of 2019, Generation will disclose five reportable segments consisting of Mid-Atlantic, Midwest, New York, ERCOT and Other Power
Regions. See Note 24 - Segment Information of the Combined Notes to Consolidated Financial Statements for additional information.

Nuclear Facilities

Generation  has  ownership  interests  in  fourteen  nuclear  generating  stations  currently  in  service,  consisting  of  24  units  with  an  aggregate  of  19,713  MW  of
capacity. Generation wholly owns all of its nuclear generating stations, except for undivided ownership interests in three jointly-owned nuclear stations: Quad
Cities  (  75% ownership),  Peach  Bottom  (  50% ownership),  and  Salem  (  42.59% ownership),  which  are  consolidated  in  Exelon’s  and  Generation's  financial
statements relative to its proportionate ownership interest in each unit, and a 50.01% membership interest in CENG, which owns Calvert Cliffs, Nine Mile Point
[excluding Long Island Power Authority's 18% undivided ownership interest in Nine Mile Point Unit 2] and Ginna nuclear stations. CENG is 100% consolidated in
Exelon's and Generation’s financial statements.

Generation’s nuclear generating stations are all operated by Generation, with the exception of the two units at Salem, which are operated by PSEG Nuclear,
LLC (PSEG Nuclear), an indirect, wholly owned subsidiary of PSEG. In 2018 , 2017 and 2016 electric supply (in GWh) generated from the nuclear generating
facilities was 68% , 69% and 67% , respectively,  of Generation’s  total electric supply, which also includes fossil, hydroelectric and renewable  generation  and
electric supply purchased for resale. Generation’s wholesale and retail power marketing activities are, in part, supplied by the output from the nuclear generating
stations.  See  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF  OPERATIONS  for  additional
information of Generation’s electric supply sources.

Nuclear Operations

Capacity  factors,  which  are  significantly  affected  by  the  number  and  duration  of  refueling  and  non-refueling  outages,  can  have  a  significant  impact  on
Generation’s results of operations. Generation’s operations from its nuclear plants have historically had minimal environmental impact and the plants have a safe
operating history.

During 2018 , 2017 and 2016 , the nuclear generating facilities operated by Generation achieved capacity factors of 94.6% , 94.1% and 94.6% , respectively.
The capacity factors reflect ownership percentage of stations operated by Generation and include CENG. Generation manages its scheduled refueling outages
to minimize their duration and to maintain high nuclear generating capacity factors, resulting in a stable generation base for Generation’s wholesale and retail
power marketing activities. During scheduled refueling outages, Generation performs maintenance and equipment upgrades in order to minimize the occurrence
of unplanned outages and to maintain safe, reliable operations.

In addition to the maintenance and equipment upgrades performed by Generation during scheduled refueling outages, Generation has extensive operating and
security  procedures  in  place  to  ensure  the  safe  operation  of  the  nuclear  units.  Generation  also  has  extensive  safety  systems  in  place  to  protect  the  plant,
personnel and surrounding area in the unlikely event of an accident or other incident.

Regulation of Nuclear Power Generation

Generation is subject to the jurisdiction of the NRC with respect to the operation of its nuclear generating stations, including the licensing for operation of each
unit.  The  NRC  subjects  nuclear  generating  stations  to  continuing  review  and  regulation  covering,  among  other  things,  operations,  maintenance,  emergency
planning,  security and  environmental  and  radiological aspects  of those stations.  As part  of its reactor  oversight process,  the NRC continuously assesses  unit
performance  indicators  and  inspection  results  and  communicates  its  assessment  on  a  semi-annual  basis.  All  nuclear  generating  stations  operated  by
Generation, except for Peach Bottom Units 2 and 3, are categorized by the NRC in the Licensee Response Column, which is the highest of five performance
bands.  As  of  January  29,  2019,  the  NRC  categorized  Peach  Bottom  Units  2  and  3  in  the  Regulatory  Response  Column,  which  is  the  second  highest  of  five
performance bands. The NRC may modify, suspend or revoke operating licenses and impose civil penalties for failure to comply with the Atomic Energy Act, the
regulations under such Act or the

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terms of the operating licenses. Changes in regulations by the NRC may require a substantial increase in capital expenditures and/or operating costs for nuclear
generating facilities.

Licenses

Generation has original 40-year operating licenses from the NRC for each of its nuclear units and has received 20-year operating license renewals from the NRC
for all its nuclear units except Clinton. Additionally, PSEG has received 20-year operating license renewals for Salem Units 1 and 2.

The following table summarizes the current license expiration dates for Generation’s operating nuclear facilities in service:

Station

Braidwood

Byron

Calvert Cliffs

Clinton (b)

Dresden

FitzPatrick

LaSalle

Limerick

Nine Mile Point

Peach Bottom (c)

Quad Cities

Ginna

Salem

Unit

In-Service
Date (a)

Current License
Expiration

1  

2  

1  

2  

1  

2  

1  

2  

3  

1  

1  

2  

1  

2  

1  

2  

2  

3  

1  

2  

1  

1  

2  

1988  

1988  

1985  

1987  

1975  

1977  

1987  

1970  

1971  

1974  

1984  

1984  

1986  

1990  

1969  

1988  

1974  

1974  

1973  

1973  

1970  

1977  

1981  

2046

2047

2044

2046

2034

2036

2026

2029

2031

2034

2042

2043

2044

2049

2029

2046

2033

2034

2032

2032

2029

2036

2040

Three Mile Island (d)
__________
(a) Denotes year in which nuclear unit began commercial operations.
(b) Although timing has been delayed, Generation currently plans to seek license renewal for Clinton and has advised the NRC that any license renewal application would not

2034

1974  

1  

be filed until the first quarter of 2021.

(c) On July 10, 2018, Generation submitted a second 20-year license renewal application to NRC for Peach Bottom Units 2 and 3.
(d) On May 30, 2017, Exelon announced that Generation will permanently cease generation operations at TMI on or about September 30, 2019 and has notified the NRC.

See Note 8 — Early Plant Retirements of the Combined Notes to Consolidated Financial Statements for additional information.

The operating license renewal process takes approximately four to five years from the commencement of the renewal process, which includes approximately two
years for Generation to develop the application and approximately two years for the NRC to review the application. To date, each granted license renewal has
been for 20 years beyond the original operating license expiration. Depreciation provisions are based on the estimated useful lives of the

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stations, which reflect the actual renewal of operating licenses for all of Generation’s operating nuclear generating stations except for TMI and Clinton. Beginning
in  2017,  TMI  depreciation  provisions  are  based  on  its  2019  expected  shutdown  date.  Beginning  in  2016,  Clinton  depreciation  provisions  are  based  on  an
estimated  useful  life  of  2027  which  is  the  last  year  of  the  Illinois  Zero  Emissions  Standard.  See  Note  4  -  Regulatory  Matters  of  the  Combined  Notes  to
Consolidated Financial Statements for additional information on FEJA and Note 8 — Early Plant Retirements of the Combined Notes to Consolidated Financial
Statements for additional information on early retirements.

Nuclear Waste Storage and Disposal

There  are  no  facilities  for  the  reprocessing  or  permanent  disposal  of  SNF  currently  in  operation  in  the  United  States,  nor  has  the  NRC  licensed  any  such
facilities.  Generation  currently  stores  all  SNF  generated  by  its  nuclear  generating  facilities  on-site  in  storage  pools  or  in  dry  cask  storage  facilities.  Since
Generation’s SNF storage pools generally do not have sufficient storage capacity for the life of the respective plant, Generation has developed dry cask storage
facilities to support operations.

As of December 31, 2018 , Generation had approximately 87,100 SNF assemblies ( 21,400 tons) stored on site in SNF pools or dry cask storage which includes
SNF assemblies at Zion Station, for which Generation retains ownership even though the responsibility for decommissioning Zion Station has been assumed by
another party, and Oyster Creek, which is no longer operational. See the Decommissioning section below for additional information regarding Zion Station and
Oyster Creek. All currently operating Generation-owned nuclear sites have on-site dry cask storage, except for TMI, where such storage is projected to be in
operation in 2021. On-site dry cask storage in concert with on-site storage pools will be capable of meeting all current and future SNF storage requirements at
Generation’s sites through the end of the license renewal periods and through decommissioning.

For a discussion of matters associated with Generation’s contracts with the DOE for the disposal of SNF, see Note 22 — Commitments and Contingencies of the
Combined Notes to Consolidated Financial Statements.

As a by-product of their operations, nuclear generating units produce LLRW. LLRW is accumulated at each generating station and permanently disposed of at
licensed  disposal  facilities.  The  Federal  Low-Level  Radioactive  Waste  Policy  Act  of  1980  provides  that  states  may  enter  into  agreements  to  provide  regional
disposal facilities for LLRW and restrict use of those facilities to waste generated within the region. Illinois and Kentucky have entered into such an agreement,
although neither state currently has an operational site and none is anticipated to be operational until after 2020.

Generation  ships  its  Class  A  LLRW,  which  represents  93% of  LLRW  generated  at  its  stations,  to  disposal  facilities  in  Utah  and  South  Carolina,  which  have
enough storage capacity to store all Class A LLRW for the life of all stations in Generation's nuclear fleet. The disposal facility in South Carolina at present is
only receiving LLRW from LLRW generators in South Carolina, New Jersey (which includes Oyster Creek and Salem) and Connecticut.

Generation utilizes on-site storage capacity at all its stations to store and stage for shipping Class B and Class C LLRW. Generation has a contract through 2032
to ship Class B and Class C LLRW to a disposal facility in Texas. The agreement provides for disposal of all current Class B and Class C LLRW currently stored
at  each  station  as  well  as  the  Class  B  and  Class  C  LLRW  generated  during  the  term  of  the  agreement.  However,  because  the  production  of  LLRW  from
Generation’s nuclear fleet will exceed the capacity at the Texas site (3.9 million curies for 15 years beginning in 2012), Generation will still be required to utilize
on-site storage at its stations for Class B and Class C LLRW. Generation currently has enough storage capacity to store all Class B and Class C LLRW for the
life of all stations in Generation’s nuclear fleet. Generation continues to pursue alternative disposal strategies for LLRW, including an LLRW reduction program to
minimize on-site storage and cost impacts.

Nuclear Insurance

Generation  is  subject  to  liability,  property  damage  and  other  risks  associated  with  major  incidents  at  any  of  its  nuclear  stations,  including  the  CENG  nuclear
stations.  Generation  has  reduced  its  financial  exposure  to  these  risks  through  insurance  and  other  industry  risk-sharing  provisions.  See  “Nuclear  Insurance”
within Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional information.

For information regarding property insurance, see ITEM 2. PROPERTIES — Generation. Generation is self-insured to the extent that any losses may exceed the
amount  of  insurance  maintained  or  are  within  the  policy  deductible  for  its  insured  losses.  Such  losses  could  have  a  material  adverse  effect  on  Exelon’s  and
Generation’s future financial statements.

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Decommissioning

NRC  regulations  require  that  licensees  of  nuclear  generating  facilities  demonstrate  reasonable  assurance  that  funds  will  be  available  in  specified  minimum
amounts at the end of the life of the facility to decommission the facility. The ultimate decommissioning obligation will be funded by the NDTs. The NDTs are
recorded in Exelon’s and Generation’s Consolidated Balance Sheets at December 31, 2018 at fair value of approximately $12.7 billion and have an estimated
targeted  annual  pre-tax  return  of  5%  to  6.2%  ,  while  the  Nuclear  AROs  are  recorded  in  Exelon’s  and  Generation’s  Consolidated  Balance  Sheets  at
December  31,  2018  at  approximately  $10.0  billion  and  have  an  estimated  annual  average  accretion  of  the  ARO  of  approximately  5%  through  a  period  of
approximately 30 years after the end of the extended lives of the units. The NDTs and AROs include Oyster Creek balances classified as Assets held for sale
and  Liabilities  held  for  sale,  respectively,  in  Exelon's  and  Generation's  Consolidated  Balance  Sheets  at  December  31,  2018.  See  ITEM 7. MANAGEMENT'S
DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF  OPERATIONS  —  Exelon  Corporation  ,  Executive  Overview  ;  ITEM  7.
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS , Critical Accounting Policies and Estimates ,
Nuclear Decommissioning, Asset Retirement Obligations and Nuclear Decommissioning Trust Fund Investments; and Note 4 — Regulatory Matters , Note 5 -
Mergers, Acquisitions and Dispositions , Note 11 — Fair Value of Financial Assets and Liabilities and Note 15 — Asset Retirement Obligations of the Combined
Notes to Consolidated Financial Statements for additional information regarding Generation’s NDT funds and its decommissioning obligations.

Oyster  Creek  Generating  Station  .  On  July  31,  2018,  Generation  entered  into  an  agreement  with  Holtec  International  (Holtec)  and  its  indirect  wholly  owned
subsidiary, Oyster Creek Environmental Protection, LLC (OCEP), for the sale and decommissioning of Oyster Creek located in Forked River, New Jersey. On
September  17,  2018,  Oyster  Creek  permanently  ceased  generation  operations.  See  Note  5 - Mergers,  Acquisitions  and  Dispositions  and  Note  15 — Asset
Retirement Obligations of the Combined Notes to Consolidated Financial Statements for additional information regarding the sale of Oyster Creek.

Zion Station Decommissioning . On September 1, 2010, Generation completed an Asset Sale Agreement (ASA) with EnergySolutions, Inc. and its wholly owned
subsidiaries, EnergySolutions, LLC and ZionSolutions under which ZionSolutions has assumed responsibility for decommissioning Zion Station.

Generation transferred to ZionSolutions substantially all of the assets (other than land) associated with Zion Station, including assets held in related NDT funds.
In consideration for Generation’s transfer of those assets, ZionSolutions assumed decommissioning and other liabilities, excluding the obligation to dispose of
SNF, associated with Zion Station. Pursuant to the ASA, ZionSolutions will periodically request reimbursement from the Zion Station-related NDT funds for costs
incurred related to the decommissioning efforts at Zion Station. However, ZionSolutions is subject to certain restrictions on its ability to request reimbursement;
specifically, if certain milestones as defined in the ASA are not met, all or a portion of requested reimbursements will be deferred until such milestones are met.
See Note 15 — Asset  Retirement  Obligations  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  Zion  Station
decommissioning and Note 2 — Variable Interest Entities of the Combined Notes to Consolidated Financial Statements for a discussion of variable interest entity
considerations related to ZionSolutions.

Fossil and Renewable Facilities (including Hydroelectric)

At December 31, 2018 , Generation  had  ownership  interests  in 12,750 MW of  capacity  in generating  facilities currently  in service, consisting  of  9,547 MW of
natural gas and oil, and 3,203 MW of renewables (wind, hydroelectric, solar and biomass). Generation  wholly owns all of its fossil and renewable generating
stations, with the exception of: (1) Wyman; (2) certain wind project entities and a biomass project entity with minority interest owners; and (3) EGRP which is
owned 49% by another owner. See Note 2 — Variable Interest Entities of the Combined Notes to Consolidated Financial Statements for additional information
regarding certain of these entities which are VIEs. Generation’s fossil and renewable generating stations are all operated by Generation, with the exception of
Wyman, which is operated by a third party. In 2018 , 2017 and 2016 , electric supply (in GWh) generated from owned fossil and renewable generating facilities
was 11% , 12% and 10% , respectively, of Generation’s total electric supply. The majority of this output was dispatched to support Generation’s wholesale and
retail power marketing activities. For additional information regarding Generation’s electric generating facilities, see ITEM 2. PROPERTIES — Exelon Generation
Company,  LLC  and  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF  OPERATIONS  —  Exelon
Corporation , Executive Overview for additional information on Generation Renewable Development.

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Table of Contents

Licenses

Fossil and  renewable generation  plants  are generally  not licensed, and,  therefore,  the decision on when to  retire plants  is, fundamentally,  a commercial one.
FERC  has  the  exclusive  authority  to  license  most  non-Federal  hydropower  projects  located  on  navigable  waterways  or  Federal  lands,  or  connected  to  the
interstate electric grid, which include Generation's Conowingo Hydroelectric Project (Conowingo) and Muddy Run Pumped Storage Facility Project (Muddy Run).
Muddy Run's license expires on December 1, 2055. On August 29, 2012, Generation submitted a hydroelectric license application to the FERC for a 46-year
license for Conowingo. Based on the FERC procedural schedule, the FERC licensing process for Conowingo was not completed prior to the expiration of the
plant’s license on September 1, 2014. As a result, on September 10, 2014, FERC issued an annual license for Conowingo, effective as of the expiration of the
previous  license. The annual  license renews automatically  absent any further  FERC action.  The stations  are  currently  being  depreciated  over their estimated
useful lives, which includes actual and anticipated license renewal periods. See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial
Statements for additional information.

Insurance

Generation maintains business interruption insurance for its renewable projects, but not for its fossil and hydroelectric operations unless required by contract or
financing agreements. See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information on
financing  agreements.  Generation  maintains  both  property  damage  and  liability  insurance.  For  property  damage  and  liability  claims  for  these  operations,
Generation is self-insured to the extent that losses are within the policy deductible or exceed the amount of insurance maintained. Such losses could have a
material  adverse  effect  on  Exelon’s  and  Generation’s  future  financial  conditions  and  their  results  of  operations  and  cash  flows.  For  information  regarding
property insurance, see ITEM 2. PROPERTIES — Exelon Generation Company, LLC .

Long-Term Power Purchase Contracts

In addition to energy produced by owned generation assets, Generation sources electricity from plants it does not own under long-term contracts. The following
tables summarize Generation’s long-term contracts to purchase unit-specific physical power with an original term in excess of one year in duration, by region, in
effect as of December 31, 2018 :

Region

Mid-Atlantic  

Midwest

New England

ERCOT

Other Power Regions

Total

Capacity Expiring (MW)

Number of
Agreements

Expiration 
Dates

Capacity (MW)

14  

2019 - 2032

2019 - 2026

2019 - 2021

2020 - 2031

2019 - 2030

4  

7  

5  

11  

41    

237

834

40

1,524

2,549

5,184

2019

673  

2020
1,020  

2021

2022

2023

Thereafter

Total

826  

298  

167  

2,200  

5,184

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Fuel

The following table shows sources of electric supply in GWh for 2018 and 2017 : 

Nuclear (a)

Purchases — non-trading portfolio

Fossil (primarily natural gas and oil)

Renewable (b)

Total supply

Source of Electric Supply

2018

2017

185,020  

59,154  

21,015  

8,469  

273,658

182,843

51,595

22,546

7,848

264,832

__________
(a)

Includes the proportionate share of output where Generation has an undivided ownership interest in jointly-owned generating plants and includes the total output of plants
that are fully consolidated (e.g., CENG).  Nuclear generation for 2018 and 2017 includes physical volumes of 35,100 GWh and 34,761 GWh, respectively, for CENG.
Includes wind, hydroelectric, solar and biomass generating assets.

(b)

The  fuel  costs  per  MWh  for  nuclear  generation  are  less  than  those  for  fossil-fuel  generation.  Consequently,  nuclear  generation  is  generally  the  most  cost-
effective way for Generation to meet its wholesale and retail load servicing requirements.

The  cycle  of  production  and  utilization  of  nuclear  fuel  includes  the  mining  and  milling  of  uranium  ore  into  uranium  concentrates,  the  conversion  of  uranium
concentrates  to uranium hexafluoride,  the  enrichment  of the uranium  hexafluoride  and  the  fabrication of fuel assemblies.  Generation  has inventory  in various
forms and does not anticipate difficulty in obtaining the necessary uranium concentrates or conversion, enrichment or fabrication services to meet the nuclear
fuel requirements of its nuclear units.

Natural gas is procured through long-term and short-term contracts, as well as spot-market purchases. Fuel oil inventories are managed so that in the winter
months  sufficient  volumes  of  fuel  are  available  in  the  event  of  extreme  weather  conditions  and  during  the  remaining  months  to  take  advantage  of  favorable
market pricing.

Generation  uses  financial  instruments  to  mitigate  price  risk  associated  with  certain  commodity  price  exposures,  using  both  over-the-counter  and  exchange-
traded instruments. See ITEM 1A. RISK FACTORS , ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF  OPERATIONS  ,  Critical  Accounting  Policies  and  Estimates  and  Note  12  —  Derivative  Financial  Instruments  of  the  Combined  Notes  to  Consolidated
Financial Statements for additional information regarding derivative financial instruments.

Power Marketing

Generation’s  integrated  business  operations  include  physical  delivery  and  marketing  of  power.    Generation  largely  obtains  physical  power  supply  from  its
generating  assets  and  power  purchase  agreements  in  multiple  geographic  regions.  Power  purchase  agreements,  including  tolling  arrangements,  are
commitments related to power generation of specific generation plants and/or dispatch similar to an owned asset depending on the type of underlying asset. The
commodity  risks  associated  with  the  output  from  generating  assets  and  PPAs  are  managed  using  various  commodity  transactions  including  sales  to
customers. The main objective is to obtain low-cost energy supply to meet physical delivery obligations to both wholesale and retail customers. Generation sells
electricity,  natural  gas  and  other  energy  related  products  and  solutions  to  various  customers,  including  distribution  utilities,  municipalities,  cooperatives,  and
commercial, industrial, governmental and residential customers in competitive markets. Where necessary, Generation may also purchase transmission service
to ensure that it has reliable transmission capacity to physically move its power supplies to meet customer delivery needs.

Price and Supply Risk Management

Generation  also  manages  the  price  and  supply  risks  for  energy  and  fuel  associated  with  generation  assets  and  the  risks  of  power  marketing  activities.
Generation implements a three-year ratable sales plan to align its hedging strategy with its financial objectives. Generation may also enter into transactions that
are outside of this ratable sales plan. Generation is exposed to commodity price risk in 2019 and beyond for portions of its electricity portfolio

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that are unhedged. As of December 31, 2018 , the percentage of expected generation hedged for the Mid-Atlantic, Midwest, New York and ERCOT reportable
segments is 89% - 92% , 56% - 59% and 32% - 35% for 2019 , 2020 , and 2021 , respectively. The percentage of expected generation hedged is the amount of
equivalent  sales  divided  by  the  expected  generation.  Expected  generation  is  the  volume  of  energy  that  best  represents  our  commodity  position  in  energy
markets  from  owned  or  contracted  generating  facilities  based  upon  a  simulated  dispatch  model  that  makes  assumptions  regarding  future  market  conditions,
which  are  calibrated  to  market  quotes  for  power,  fuel,  load  following  products  and  options.  Equivalent  sales  represent  all  hedging  products,  which  include
economic  hedges  and  certain  non-derivative  contracts,  including  sales  to  ComEd,  PECO,  BGE,  Pepco,  DPL  and  ACE  to  serve  their  retail  load.  A  portion  of
Generation’s hedging strategy may be implemented through the use of fuel products based on assumed correlations between power and fuel prices. The risk
management  group  and  Exelon’s  RMC  monitor  the  financial  risks  of  the  wholesale  and  retail  power  marketing  activities.  Generation  also  uses  financial  and
commodity contracts for proprietary trading purposes, but this activity accounts for only a small portion of Generation’s efforts. The proprietary trading portfolio is
subject to a risk management policy that includes stringent risk management limits. See ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT
MARKET RISK for additional information.

Capital Expenditures

Generation’s  business  is capital intensive  and  requires  significant  investments  primarily in nuclear  fuel and  energy  generation  assets.  Generation’s  estimated
capital expenditures for 2019 are approximately $2.0 billion ,  which  includes  Generation's  share  of  the  investment  in  the  co-owned  Salem  plant  and  the  total
capital expenditures for the fully consolidated CENG nuclear plants.

Utility Registrants

Utility Operations

Service Territories and Franchise Agreements

The following table presents the size of service territories, populations of each service territory and the number of customers within each service territory for the
Utility Registrants as of December 31, 2018 :

Service Territories

(in square miles)

Service Territory Population

Number of Customers

(in millions)

(in millions)

Total

Electric

Natural gas

Total

Electric

Natural gas

Total

Electric

Natural gas

11,400  

11,400  

2,100  

3,250  

640  

5,400  

2,800  

1,900  

2,300  

640  

5,400  

2,800  

n/a  

1,900  

3,050  

n/a  

275  

n/a  

9.5  (a)  

4.0  (b)  

3.1  (c)  

2.4  (d)  

1.4  (e)  

1.1  (f)  

9.5  

4.0  

3.0  

2.4  

1.4  

1.1  

n/a  

2.5  

2.9  

n/a  

0.6  

n/a  

4.0  

1.7  

1.3  

0.9  

0.5  

0.6  

4.0  

1.6  

1.3  

0.9  

0.5  

0.6  

n/a

0.5

0.7

n/a

0.1

n/a

ComEd

PECO

BGE

Pepco

DPL

ACE
__________
(a)
(b)
(c)
(d)
(e)
(f)

Includes approximately 2.7 million in the city of Chicago.
Includes approximately 1.6 million in the city of Philadelphia.
Includes approximately 0.6 million in the city of Baltimore.
Includes approximately 0.7 million in the District of Columbia.
Includes approximately 0.1 million in the city of Wilmington.
Includes approximately 0.1 million in the city of Atlantic City.

The Utility Registrants have the necessary authorizations to perform their current business of providing regulated electric and natural gas distribution services in
the various municipalities and territories in which they now supply such services. These authorizations include charters, franchises, permits, and certificates of
public convenience issued by local and state governments and state utility commissions. ComEd's, BGE's (gas) and ACE's rights are generally non-exclusive;
while PECO's, BGE's (electric) Pepco's and DPL's rights are generally exclusive. Certain authorizations are perpetual while others have varying expiration dates.
The Utility Registrants anticipate working with the appropriate governmental bodies to extend or replace the authorizations prior to their expirations.

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Utility Regulations

State utility commissions regulate the Utility Registrants' electric and gas distribution rates and service, issuances of certain securities, and certain other aspects
of the business. The following table outlines the state commissions responsible for utility oversight.

Registrant

ComEd

PECO

BGE

Pepco

DPL

ACE

  Commission
  ICC

  PAPUC

  MDPSC

  DCPSC/MDPSC

  DPSC/MDPSC

  NJBPU

The Utility Registrants are public utilities under the Federal Power Act subject to regulation by FERC related to transmission rates and certain other aspects of
the  utilities'  business.  The  U.S.  Department  of  Transportation  also  regulates  pipeline  safety  and  other  areas  of  gas  operations  for  PECO,  BGE  and  DPL.
Additionally,  the  Utility  Registrants  are  subject  to  NERC  mandatory  reliability  standards,  which  protect  the  nation's  bulk  power  system  against  potential
disruptions from cyber and physical security breaches.

Seasonality Impacts on Delivery Volumes

The Utility Registrants' electric distribution volumes are generally higher during the summer and winter months when temperature extremes create demand for
either summer cooling or winter heating. For PECO, BGE and DPL, natural gas distribution volumes are generally higher during the winter months when cold
temperatures create demand for winter heating.

ComEd, BGE, Pepco and DPL Maryland have electric distribution decoupling mechanisms and BGE has a natural gas decoupling mechanism that eliminate the
favorable  and  unfavorable  impacts  of  weather  and  customer  usage  patterns  on  electric  distribution  and  natural  gas  delivery  volumes.  As  a  result,  ComEd’s,
BGE’s, Pepco’s and DPL’s Maryland electric distribution revenues and BGE's natural gas distribution revenues are not materially impacted by delivery volumes.
PECO’s electric distribution revenues and natural gas distribution revenues and ACE’s electric distribution revenues and DPL’s Delaware electric distribution and
natural gas revenues are impacted by delivery volumes.

Electric and Natural Gas Distribution Services

The  Utility Registrants  are  allowed  to  recover  reasonable  costs  and  fair  and  prudent  capital  expenditures  associated  with electric  and  natural  gas  distribution
services and earn a return on those capital expenditures, subject to commission approval. ComEd recovers costs through a performance-based rate formula.
ComEd is required to file an update to the performance-based rate formula on an annual basis. PECO's, BGE’s and DPL's electric and gas distribution costs and
Pepco's and ACE's electric distribution costs are recovered through traditional rate case proceedings.  In certain instances, the Utility Registrants use specific
recovery mechanisms as approved by their respective regulatory agencies.

ComEd, Pepco and ACE customers have the choice to purchase electricity, and PECO, BGE and DPL customers have the choice to purchase electricity and
natural gas from competitive electric generation and natural gas suppliers. The Utility Registrants remain the distribution service providers for all customers and
are obligated to deliver electricity and natural gas to customers in their respective service territories while charging a regulated rate for distribution service. In
addition, the Utility Registrants also retain significant default service obligations to provide electricity to certain groups of customers in their respective service
areas who do not choose a competitive electric generation supplier. PECO and BGE also retain significant default service obligations to provide natural gas to
certain groups of customers in their respective service areas who do not choose a competitive natural gas supplier. For natural gas, DPL does not retain default
service obligations.

For customers that choose to purchase electric generation or natural gas from competitive suppliers, the Utility Registrants act as the billing agent and therefore
do not record Operating revenues or Purchased power and fuel

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Table of Contents

expense related to the electricity and/or natural gas. For customers that choose to purchase electric generation or natural gas from a Utility Registrant, the Utility
Registrants  are  permitted  to  recover  the  electricity  and  natural  gas  procurement  costs  without  mark-up  and  therefore  record  equal  and  offsetting  amounts  of
Operating revenues and Purchased power and fuel expense related to the electricity and/or natural gas. As a result, fluctuations in electricity or natural gas sales
and procurement costs have no impact on the Utility Registrants’ Revenues net of purchased power and fuel expense, which is a non-GAAP measure used to
evaluate operational performance, or Net Income.

See ITEM 7. MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF  OPERATIONS  , Results of Operations and
Note  4  —  Regulatory  Matters  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  electric  and  natural  gas
distribution services.

Procurement-Related Proceedings

The Utility Registrants' electric supply for its customers is primarily procured through contracts as required by the ICC, PAPUC, MDPSC, DCPSC, DPSC and
NJBPU.  The  Utility  Registrants  procure  electricity  supply  from  various  approved  bidders,  including  Generation.  RTO  spot  market  purchases  and  sales  are
utilized to balance the utility electric load and supply as required. Charges incurred for electric supply procured through contracts with Generation are included in
Purchased power from affiliates on the Utility Registrants' Statements of Operations and Comprehensive Income.

PECO's, BGE’s and DPL's natural gas supplies are purchased from a number of suppliers for terms of up to three years. PECO, BGE and DPL have annual firm
supply and transportation contracts of 132,000 mmcf, 128,000 mmcf and 58,000 mmcf, respectively. In addition, to supplement gas supply at times of heavy
winter demands and in the event of temporary emergencies, PECO, BGE and DPL have available storage capacity from the following sources:

PECO

BGE

Liquefied Natural
Gas Facility

Propane-Air Plant

Underground Storage Service
Agreements  (a)

Peak Natural Gas Sources (in mmcf)

1,200  

1,056  

150  

550  

18,000

22,000

DPL
___________
(a) Natural  gas  from  underground  storage  represents  approximately  28% , 54% and 34% of  PECO's,  BGE’s  and  DPL's  2018 - 2019 heating  season  planned  supplies,

3,800

257  

n/a  

respectively.

PECO,  BGE  and  DPL  have  long-term  interstate  pipeline  contracts  and  also  participate  in  the  interstate  markets  by  releasing  pipeline  capacity  or  bundling
pipeline  capacity  with  gas  for  off-system  sales.  Off-system  gas  sales  are  low-margin  direct  sales  of  gas  to  wholesale  suppliers  of  natural  gas.  Earnings  from
these activities are shared between the utilities and customers. PECO, BGE and DPL make these sales as part of a program to balance its supply and cost of
natural gas. The off-system gas sales are not material to PECO, BGE and DPL.

See ITEM  7A.  QUANTITATIVE  AND  QUALITATIVE  DISCLOSURES  ABOUT  MARKET  RISK  ,  Commodity  Price,  for  additional  information  regarding  Utility
Registrants' contracts to procure electric supply and natural gas.

Energy Efficiency Programs

The  Utility  Registrants  are  allowed  to  recover  costs  associated  with  energy  efficiency  and  demand  response  programs.  Each  commission  approved  program
seeks  to  meet  mandated  electric  consumption  reduction  targets  and  implement  demand  response  measures  to  reduce  peak  demand.  The  programs  are
designed to meet standards required by each respective regulatory agency.

The Utility Registrants are allowed to earn a return on their energy efficiency costs. See Note 4 — Regulatory Matters of the Combined Notes to Consolidated
Financial Statements for additional information.

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Capital Investment

The  Utility  Registrants'  businesses  are  capital  intensive  and  require  significant  investments,  primarily  in  electric  transmission  and  distribution  and  natural  gas
transportation  and  distribution  facilities, to ensure  the  adequate  capacity,  reliability and  efficiency  of their systems.  ComEd's,  PECO's, BGE's, Pepco's,  DPL's
and ACE's most recent estimates of capital expenditures for plant additions and improvements for 2019 are as follows:

(in millions)

ComEd

PECO

BGE

Pepco

DPL

ACE

Transmission Services

Transmission

Distribution

Gas

Total

Projected 2019 Capital Expenditure Spending

325  

125  

225  

75  

100  

150  

1,550  

600  

475  

650  

200  

150  

N/A  

250  

400  

N/A  

50  

N/A  

1,875

975

1,100

725

350

300

Under  FERC’s  open  access  transmission  policy,  the  Utility  Registrants,  as  owners  of  transmission  facilities,  are  required  to  provide  open  access  to  their
transmission facilities under filed tariffs at cost-based rates approved by FERC. The Utility Registrants and their affiliates are required to comply with FERC’s
Standards  of  Conduct  regulation  governing  the  communication  of  non-public  transmission  information  between  the  transmission  owner’s  employees  and
wholesale merchant employees.

PJM is the regional grid operator and operates pursuant to FERC-approved tariffs. PJM is the transmission provider under, and the administrator of, the PJM
Open Access Transmission Tariff (PJM Tariff). PJM operates the PJM energy, capacity and other markets, and, through central dispatch, controls the day-to-day
operations of the bulk power system for the region. The Utility Registrants are members of PJM and provide regional transmission service pursuant to the PJM
Tariff. The Utility Registrants and the other transmission owners in PJM have turned over control of their transmission facilities to PJM, and their transmission
systems  are  under  the  dispatch  control  of  PJM.  Under  the  PJM  Tariff,  transmission  service  is  provided  on  a  region-wide,  open-access  basis  using  the
transmission facilities of the PJM transmission owners at rates based on the costs of transmission service.

ComEd's transmission rates are established based on a formula that was approved by FERC in January 2008. BGE's, Pepco's, DPL's and ACE's transmission
rates are established based on a formula that was approved by FERC in April 2006. FERC’s orders establish the agreed-upon treatment of costs and revenues
in the determination of transmission rates and the process for updating the formula rate calculation on an annual basis.

On May 1, 2017, PECO filed a request with FERC seeking approval to update its transmission rate and change the manner in which PECO’s transmission rate is
determined from a fixed rate to a formula rate. The new formula was accepted by FERC effective as of December 1, 2017, subject to refund and set the matter
for hearing and settlement judge procedures. On May 4, 2018, the Chief Administrative Law Judge terminated settlement judge procedures and designated a
new presiding judge.

See Note 4 — Regulatory Matters of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  the  PECO  transmission
formula rate and transmission services.

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Employees

As of December 31, 2018 , Exelon and its subsidiaries had 33,383 employees in the following companies, of which 11,372 or 34% were covered by collective
bargaining agreements (CBAs):

Generation (c)

ComEd

PECO

BGE (d)

PHI (e)

Pepco (e)

DPL (e)

ACE (e)

Other (g)
Total

IBEW 
Local 15 (a)

IBEW 
Local 614 (b)

Other CBAs

Total 
Employees
Covered by 
CBAs

Total
Employees

1,568  

3,378  

—  

—  

—  

—  

—  

—  

62  

84  

—  

1,381  

—  

—  

—  

—  

—  

—  

5,008

1,465

2,485  

—  

—  

—  

277  

1,023  

684  

386  

44  

4,899

4,137  

3,378  

1,381  

—  

277  

1,023  

684  

386  

106  

11,372

14,110

6,152

2,708

3,025

1,258

1,423

940

612

3,155

33,383

__________
(a) A separate CBA between ComEd and IBEW Local 15 covers approximately 73 employees in ComEd’s System Services Group and will expire in 2020. Generation’s and

ComEd’s separate CBAs with IBEW Local 15 will expire in 2022.

(b) PECO craft and call center employees in the Philadelphia service territory are covered by CBAs with IBEW Local 614, both expiring in 2021. Additionally, Exelon Power,

an operating unit of Generation, has an agreement covering 84 employees, which expires in 2019.

(c) During  2018,  Generation  acquired  and  finalized  its  CBA  with  Distrigas  Local  369,  which  will  expire  in  2020,  and  additionally,  finalized  a  first  collective  bargaining
agreement, expiring in 2021, with a small unit of employees represented by IUOE Local 501 at Exelon's Hyperion Solutions facility. Also in 2018, Generation finalized a
three-year  agreement  with  the  Security  Officer  union  at  Braidwood  and  that  CBA  will  expire  in  2021.  During  2017,  Generation  finalized  CBAs  with  the  Security  Officer
unions at LaSalle, Limerick and Quad Cities, which all will expire in 2020 and Dresden expiring in 2021. Additionally, during 2017, Generation acquired and combined two
CBAs at FitzPatrick into one CBA covering both craft and security employees, which will expire in 2023. During 2016, Generation finalized its CBA with the Security Officer
union at Oyster Creek, expiring in 2022 and New Energy IUOE Local 95-95A, which will expire in 2021. Also, during 2016, Generation finalized a 5-year agreement with
the New England ENEH, UWUA Local 369, which will expire in 2022. During 2015, Generation finalized its CBA with Clinton Local 51 which will expire in 2020; its two
CBAs with Local 369 at Mystic 7 and Mystic 8/9, both expiring in 2020; and three Security Officer unions at Byron, Clinton and TMI, all expiring between 2019 and 2021,
respectively.  During  2014,  Generation  finalized  CBAs  with  TMI  Local  777  and  Oyster  Creek  Local  1289,  expiring  in  2019  and  2021,  respectively.  Also  in  2014,  CENG
finalized its CBA with Nine Mile Point which will expire in 2020.
In January 2017, an election was held at BGE which resulted in union representation for certain employees, who numbered  1,284 at the end of 2018. BGE and IBEW
Local 410 are negotiating an initial agreement which could result in some modifications to wages, hours and other terms and conditions of employment. No agreement has
been finalized to date and management cannot predict the outcome of such negotiations.

(d)

(e) PHI’s utility subsidiaries are parties to five CBAs with four local unions. CBAs are generally renegotiated every three to five years. All these CBAs were renegotiated in
2014 and were extended through various dates ranging from October 2018 through June 2020. During 2018, ACE finalized a five-year agreement with Local 210, expiring
in 2023.

(f) Other includes shared services employees at BSC.

Environmental Regulation

General

The Registrants are subject to comprehensive and complex legislation regarding environmental matters by the federal government and various state and local
jurisdictions in which they operate their facilities. The Registrants are also subject to environmental regulations administered by the EPA and various state and
local environmental protection agencies. Federal, state and local regulation includes the authority to regulate air, water, and solid and hazardous waste disposal.

The  Exelon  Board  of  Directors  is  responsible  for  overseeing  the  management  of  environmental  matters.  Exelon  has  a  management  team  to  address
environmental compliance and strategy, including the CEO; the Senior Vice

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President,  Corporate  Strategy  &  Chief  Innovation  and  Sustainability  Officer;  the  Senior  Vice  President,  Competitive  Market  Policy;  and  the  Director,  Safety  &
Sustainability, as well as senior management of Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE. Performance of those individuals directly involved
in environmental compliance and strategy is reviewed and affects compensation as part of the annual individual performance review process. The Exelon Board
of Directors has delegated to its Generation Oversight Committee and the Corporate Governance Committee the authority to oversee Exelon’s compliance with
health,  environmental  and  safety  laws and  regulations  and  its strategies  and  efforts  to  protect  and  improve  the  quality  of  the  environment,  including  Exelon’s
internal climate change and sustainability policies and programs, as discussed in further detail below. The respective Boards of ComEd, PECO, BGE, Pepco,
DPL and ACE oversee environmental, health and safety issues related to these companies.

Air Quality

Air quality regulations promulgated by the EPA and the various state and local environmental agencies impose restrictions on emission of particulates, sulfur
dioxide (SO2), nitrogen oxides (NOx), mercury and other air pollutants and require permits for operation of emitting sources. Such permits have been obtained
as  needed  by  Exelon’s  subsidiaries.  However,  due  to  its  low  emitting  generation  fleet  comprised  of  nuclear,  natural  gas,  hydroelectric,  wind  and  solar,
compliance with the Federal Clean Air Act does not have a material impact on Generation’s operations.

See  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF  OPERATIONS  for  additional  information
regarding clean air regulation in the forms of the CSAPR, the regulation of hazardous air pollutants from coal- and oil-fired electric generating facilities under
MATS, and regulation of GHG emissions.

Water Quality

Under the federal Clean Water Act, NPDES permits for discharges into waterways are required to be obtained from the EPA or from the state environmental
agency  to  which the  permit  program  has  been  delegated  and  must  be  renewed  periodically.  Certain  of  Exelon's  facilities discharge  stormwater  and  industrial
wastewater  into  waterways  and  are  therefore  subject  to  these  regulations  and  operate  under  NPDES  permits  or  pending  applications  for  renewals  of  such
permits  after  being  granted  an  administrative  extension.  Generation  is  also  subject  to  the  jurisdiction  of  the  Delaware  River  Basin  Commission  and  the
Susquehanna River Basin Commission, regional agencies that primarily regulate water usage.

Section 316(b) of the Clean Water Act

Section 316(b) requires that the cooling water intake structures at electric power plants reflect the best technology available to minimize adverse environmental
impacts and is implemented through state-level NPDES permit programs. All of Generation’s power generation facilities with cooling water systems are subject
to the regulations. Facilities without closed-cycle recirculating systems (e.g., cooling towers) are potentially most affected by recent changes to the regulations.
For Generation, those facilities are Calvert Cliffs, Clinton, Dresden, Eddystone, Fairless Hills, FitzPatrick, Ginna, Gould Street, Handley, Mystic 7, Nine Mile Point
Unit 1, Peach Bottom, Quad Cities and Salem.

On October 14, 2014, the EPA's Section 316(b) rule became effective. The rule requires that a series of studies and analyses be performed to determine the
best  technology  available  to  minimize  adverse  impacts  on  aquatic  life,  followed  by  an  implementation  period  for  the  selected  technology.  The  timing  of  the
various  requirements  for  each  facility  is  related  to  the  status  of  its  current  NPDES  permit  and  the  subsequent  renewal  period.  There  is  no  fixed  compliance
schedule, as this is left to the discretion of the state permitting director.

Until the compliance requirements are determined by the applicable state permitting director on a site-specific basis for each plant, Generation cannot estimate
the effect that compliance with the rule will have on the operation of its generating facilities and its future results of operations, cash flows, and financial position.
Should a state permitting director determine that a facility must install cooling towers to comply with the rule, that facility’s economic viability could be called into
question. However, the potential impact of the rule has been significantly reduced since the final rule does not mandate cooling towers as a national standard
and  sets  forth  technologies  that  are  presumptively  compliant,  and  the  state  permitting  director  is  required  to  apply  a  cost-benefit  test  and  can  take  into
consideration site-specific factors, such as those that would make cooling towers infeasible.

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Pursuant  to  discussions  with  the  NJDEP  in  2010  regarding  the  application  of  Section  316(b)  to  Oyster  Creek,  Generation  agreed  to  permanently  cease
generation  operations  at  Oyster  Creek  before  the  expiration  of  its  operating  license  in  2029.  On  September  17,  2018,  Oyster  Creek  permanently  ceased
generation operations, and its cooling water intake system is no longer subject to Section 316(b). See Note 8 - Early Plant Retirements of the Combined Notes
to Consolidated Financial Statements for additional information about the sale and decommissioning of Oyster Creek.

New York Facilities

In July 2011, the New York Department of Environmental Conservation (DEC) issued a policy regarding the best available technology for cooling water intake
structures. Through its policy, the DEC established closed-cycle cooling or its equivalent as the performance goal for all existing facilities, but also provided that
the DEC will select a feasible technology whose costs are not wholly disproportionate to the environmental benefits to be gained and allows for a site-specific
determination where the entrainment performance goal cannot be achieved (i.e., the requirement most likely to support cooling towers). The Ginna, Nine Mile
Point  Unit  1,  and  Fitzpatrick  power  generation  facilities  have  received  renewals  of  their  state  water  discharge  permits  and  cooling  towers  were  not  required.
These  facilities  are  now  engaged  in  the  required  analyses  to  enable  the  environmental  agency  to  determine  the  best  technology  available  in  the  next  permit
renewal cycles.

Salem

On  July  28,  2016,  the  NJDEP  issued  a  final  permit  for  Salem  that  did  not  require  the  installation  of  cooling  towers  and  allows  Salem  to  continue  to  operate
utilizing the existing cooling water system with certain required system modifications. However, the permit is being challenged by an environmental organization,
and if successful, could result in additional costs for Clean Water Act compliance. Potential cooling water system modification costs could be material and could
adversely impact the economic competitiveness of this facility.

Solid and Hazardous Waste

CERCLA  provides  for  immediate  response  and  removal  actions  coordinated  by  the  EPA  in  the  event  of  threatened  releases  of  hazardous  substances  and
authorizes  the  EPA  either  to  clean  up  sites  at  which  hazardous  substances  have  created  actual  or  potential  environmental  hazards  or  to  order  persons
responsible for the situation to do so. Under CERCLA, generators and transporters of hazardous substances, as well as past and present owners and operators
of  hazardous  waste  sites,  are  strictly, jointly  and  severally liable for  the  cleanup  costs  of  waste  at  sites,  most  of which  are  listed by  the  EPA  on the  National
Priorities List (NPL). These PRPs can be ordered to perform a cleanup, can be sued for costs associated with an EPA-directed cleanup, may voluntarily settle
with the EPA concerning their liability for cleanup costs, or may voluntarily begin a site investigation and site remediation under state oversight prior to listing on
the  NPL.  Various  states,  including  Delaware,  Illinois,  Maryland,  New  Jersey  and  Pennsylvania  and  the  District  of  Columbia  have  also  enacted  statutes  that
contain provisions substantially similar to CERCLA. In addition, RCRA governs treatment, storage and disposal of solid and hazardous wastes and cleanup of
sites where such activities were conducted.

Generation, ComEd, PECO, BGE, Pepco, DPL and ACE and their subsidiaries are, or could become in the future, parties to proceedings initiated by the EPA,
state  agencies  and/or  other  responsible  parties  under  CERCLA  and  RCRA  with  respect  to  a  number  of  sites,  including  MGP  sites,  or  may  undertake  to
investigate and remediate sites for which they may be subject to enforcement actions by an agency or third-party.

See Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional information regarding solid and
hazardous waste regulation and legislation.

Environmental Remediation

ComEd’s and PECO’s environmental liabilities primarily arise from contamination at former MGP sites. ComEd, pursuant to an ICC order, and PECO, pursuant
to settlements of natural gas distribution rate cases with the PAPUC, have an on-going process to recover environmental remediation costs of the MGP sites
through  a  provision  within  customer  rates.  BGE,  ACE,  Pepco  and  DPL  do  not  have  material  contingent  liabilities  relating  to  MGP  sites.  The  amount  to  be
expended in 2019 for compliance with environmental remediation related to contamination at former MGP sites and other gas purification sites is expected to
total $ 46 million , consisting of $ 36 million , $ 6 million and $4 million at ComEd, PECO and BGE respectively. The Utility Registrants also have contingent
liabilities for

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environmental remediation of non-MGP contaminants (e.g., PCBs). As of December 31, 2018 , the Utility Registrants have established appropriate contingent
liabilities for environmental remediation requirements.

The Registrants’ operations have in the past, and may in the future, require substantial expenditures in order to comply with environmental laws. Additionally,
under Federal and state environmental laws, the Registrants are generally liable for the costs of remediating environmental contamination of property now or
formerly  owned  by  them  and  of  property  contaminated  by  hazardous  substances  generated  by  them.  The  Registrants  own  or  lease  a  number  of  real  estate
parcels, including parcels on which their operations or the operations of others may have resulted in contamination by substances that are considered hazardous
under environmental laws.

In addition, Generation, ComEd, PECO, BGE, Pepco, DPL and ACE may be required to make significant additional expenditures not presently determinable for
other environmental remediation costs.

See Note 4 — Regulatory Matters and Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional
information regarding the Registrants’ environmental remediation efforts and related impacts to the Registrants’ Consolidated Financial Statements.

Global Climate Change

Exelon has utility and generation assets, and customers, that are and will be further subject to the impacts of climate change. Accordingly, Exelon is engaged in
a  variety  of  initiatives  to  understand  and  mitigate  these  impacts,  including  investments  in  resiliency,  partnering  with  federal,  state  and  local  governments  to
minimize  impacts,  and,  importantly,  advocating  for  public  policy  that  reduces  emissions  that  cause  climate  change.  Exelon,  as  a  producer  of  electricity  from
predominantly  low-  and  zero-carbon  generating  facilities  (such  as  nuclear,  hydroelectric,  natural  gas,  wind  and  solar  photovoltaic),  has  a  relatively  small
greenhouse gas (GHG) emission profile, or carbon footprint, compared to other domestic generators of electricity (Exelon neither owns nor operates any coal-
fueled  generating  assets).  Exelon's  natural  gas  and  biomass  fired  generating  plants  produce  GHG  emissions,  most  notably,  CO2.  However,  Generation’s
owned-asset emission intensity, or rate of carbon dioxide equivalent (CO 2 e) emitted per unit of electricity generated, is among the lowest in the industry. As of
December 31, 2018 , fossil fuel generation represented approximately 29% of Exelon's owned generating capacity, while fossil fuel-fired generation during 2018
represented less than 11% of Exelon's overall generation on a MWh basis. Other GHG emission sources at Exelon include natural gas (methane) leakage on
the natural gas systems, sulfur hexafluoride (SF6) leakage from electric transmission and distribution operations, refrigerant leakage from chilling and cooling
equipment, and fossil fuel combustion in motor vehicles. Exelon facilities and operations are subject to the global impacts of climate change and Exelon believes
its operations could be significantly affected by the physical risks of climate change. See ITEM 1A. RISK FACTORS for information regarding the market and
financial, regulatory and legislative, and operational risks associated with climate change.

Climate Change Regulation

Exelon is or may become subject to additional climate change regulation or legislation at the federal, regional and state levels.

International  Climate  Change  Agreements.  At  the  international  level,  the  United  States  is  a  Party  to  the  United  Nations  Framework  Convention  on  Climate
Change  (UNFCCC).  The  Parties  to  the  UNFCCC  adopted  the  Paris  Agreement  at  the  21  st session  of  the  UNFCCC  Conference  of  the  Parties  (COP  21)  on
December 12, 2015, and it became effective on November 4, 2016. Under the Paris Agreement, the Parties agreed to try to limit the global average temperature
increase  to  2°C  (3.6°F)  above  pre-industrial  levels.  In  doing  so,  Parties  developed  their  own  national  reduction  commitments.  The  United  States  submitted  a
non-binding  target  of  17%  below  2005  emission  levels  by  2020  and  26%  to  28%  below  2005  levels  by  2025.  President  Trump  has  stated  his  intention  to
withdraw the U.S. from the Paris Agreement, but no formal action has been initiated.

Federal Climate Change Legislation and Regulation. It is highly unlikely that federal legislation to reduce GHG emissions will be enacted in the near-term. If such
legislation is adopted, it would likely increase the value of Exelon's low-carbon fleet even though Exelon may incur costs either to further limit or offset the GHG
emissions from its operations or to procure emission allowances or credits. Continued inaction could negatively impact the value of Exelon’s low-carbon fleet.

Under the Obama Administration, the EPA proposed and finalized regulations for fossil fuel-fired power plants, referred to as the Clean Power Plan, which are
currently being litigated. Under the Trump Administration, on October

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16, 2017 the EPA proposed to repeal the CPP on the basis that the new Administration believed that the CPP rule went beyond the EPA's authority to establish
a  best  system  of  emissions  reduction  (BSER)  for  existing  power  plants.  Subsequently,  on  August  31,  2018,  EPA  proposed  its  Affordable  Clean  Energy  Rule
(ACE), which would replace the CPP with revised emission guidelines based on heat rate improvement measures that could be achieved within the fence line of
existing power plants.

Given litigation uncertainty and the absence of a final ACE rule, Exelon and Generation cannot at this time predict the impacts of regulation of existing power
plants, or individual state responses to developments related to final resolution of the CPP and ACE regulations, or how developments will impact their future
financial statements.

Regional and State Climate Change Legislation and Regulation. A number of states in which Exelon operates have state and regional programs to reduce GHG
emissions, including from the power sector. As the nation’s largest generator of carbon-free electricity, our fleet supports these efforts to produce safe, reliable
electricity with minimal GHGs. Notably, nine northeast and mid-Atlantic states (Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New
York,  Rhode  Island  and  Vermont)  currently  participate  in  the  Regional  Greenhouse  Gas  Initiative  (RGGI),  which  is  in  the  process  of  strengthening  its
requirements. The program requires most fossil fuel-fired power plants in the region to hold allowances, purchased at auction, for each ton of CO  2 emissions.
Non-emitting resources do not have to purchase or hold these allowances.

Many  states  in  which  Exelon  subsidiaries  operate  also  have  state-specific  programs  to  address  GHGs,  including  from  power  plants.  Most  notable  of  these,
besides  RGGI,  are  through  renewable  and  other  portfolio  standards.  Additionally,  in  response  to  a  court  decision  clarifying  the  obligations  under  the  Global
Warming Solutions Act, the Massachusetts Department of Environmental Protection in 2017 finalized regulations establishing a statewide cap on CO 2 emissions
from  fossil  fuel  power  plants  (Massachusetts  remains  in  RGGI  as  well).  The  effect  of  this  new  obligation  and  potential  for  market  illiquidity  in  the  early  years
represent a risk to Generation’s Massachusetts fossil facilities, including Medway and Mystic. At the same time, the District of Columbia is considering a plan to
incorporate the cost of carbon into electricity, via consumption, as well as directly into the cost of transportation and home heating fuels. Details remain to be
developed, but the specifics could have implications for Pepco’s operations.

Regardless of whether  GHG regulation occurs at the local, state, or federal level, Exelon remains one of the largest, lowest-carbon electric generators  in the
United  States,  relying  mainly  on  nuclear,  natural  gas,  hydropower,  wind,  and  solar.  The  extent  that  the  low-carbon  generating  fleet  will  continue  to  be  a
competitive advantage for Exelon depends on resolution of the CPP and ACE regulations and associated current or future litigation at the federal level, new or
expanded state action on greenhouse gas emissions or direct support of clean energy technologies, including nuclear, as well as potential market reforms that
value our fleet’s emission-free attributes.

Renewable and Alternative Energy Portfolio Standards

Thirty-nine states and the District of Columbia, incorporating the vast majority of Exelon operations as well as all utility operations, have adopted some form of
RPS requirement. These standards impose varying levels of mandates for procurement of renewable or clean electricity (the definition of which varies by state)
and/or energy efficiency. These are generally expressed as a percentage of annual electric load, often increasing by year. Exelon's utilities comply with these
various  requirements  through  purchasing  qualifying  renewables,  implementing  efficiency  programs,  acquiring  sufficient  credits  (e.g.,  RECs),  paying  an
alternative compliance payment, and/or a combination of these compliance alternatives. The Utility Registrants are permitted to recover from retail customers the
costs  of  complying  with  their  state  RPS  requirements,  including  the  procurement  of  RECs  or  other  alternative  energy  resources.  New  York,  Illinois  and  New
Jersey adopted standards targeted at preserving the zero-carbon attributes of certain nuclear-powered generating facilities. Generation owns multiple facilities
participating in these programs within these states. Other states in which Generation and our utilities operate are considering similar programs.

See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information on renewable portfolio standards.

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Executive Officers of the Registrants as of February 8, 2019

Exelon

Name
Crane, Christopher M.

Age   Position
60   Chief Executive Officer, Exelon;

  Chairman, ComEd, PECO & BGE

  Chairman, PHI

  President, Exelon

  President, Generation

Cornew, Kenneth W.

53   Senior Executive Vice President and Chief Commercial Officer, Exelon;

  President and CEO, Generation

  Executive Vice President and Chief Commercial Officer, Exelon

  President and Chief Executive Officer, Constellation

Pramaggiore, Anne R.

60

Senior Executive Vice President, Exelon; Chief Executive Officer, Exelon
Utilities

  Chief Executive Officer, ComEd

  President, ComEd

Dominguez, Joseph

56   Chief Executive Officer, ComEd

Executive Vice President, Governmental & Regulatory Affairs and Public
Policy, Exelon

  Period
  2012 - Present

  2012 - Present

  2016 - Present

  2008 - Present

  2008 - 2013

  2013 - Present

  2013 - Present

  2012 - 2013

  2012 - 2013

2018 - Present

  2012 - 2018

  2009 - 2018

  2018 - Present

2015 - 2018

Senior Vice President, Governmental & Regulatory Affairs and Public Policy,
Exelon

2012 - 2015

Innocenzo, Michael A.

53   President and Chief Executive Officer, PECO

  Senior Vice President and Chief Operations Officer, PECO

Butler, Calvin G.

49   Chief Executive Officer, BGE

  Senior Vice President, Regulatory and External Affairs, BGE

  Senior Vice President, Corporate Affairs, Exelon

Velazquez, David M.

59   President and Chief Executive Officer, PHI

  President and Chief Executive Officer, Pepco, DPL and ACE

  Executive Vice President, Pepco Holdings, Inc.

  2018 - Present

  2012 - 2018

  2014 - Present

  2013 - 2014

  2011 - 2013

  2016 - Present

  2009 - Present

  2009 - 2016

Von Hoene Jr., William A.

65   Senior Executive Vice President and Chief Strategy Officer, Exelon

  2012 - Present

Nigro, Joseph

54   Senior Executive Vice President and Chief Financial Officer, Exelon

  2018 - Present

  Executive Vice President, Exelon; Chief Executive Officer, Constellation

  2013 - 2018

Aliabadi, Paymon

56   Executive Vice President and Chief Risk Officer, Exelon

  Managing Director, Gleam Capital Management

  2013 - Present

  2012 - 2013

26

 
 
 
   
 
   
 
   
 
   
 
   
   
   
 
 
   
 
   
 
   
 
   
   
   
 
 
 
 
   
 
   
 
   
   
   
 
 
   
 
 
 
   
 
 
 
   
   
   
 
 
   
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
   
   
 
 
   
 
   
   
   
 
 
   
 
   
   
   
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Name
Souza, Fabian E.

Generation

Age   Position
48   Senior Vice President and Corporate Controller, Exelon

  Senior Vice President and Deputy Controller, Exelon

  Period
  2018 - Present

  2017 - 2018

  Vice President, Controller and Chief Accounting Officer, The AES Corporation

  2015 - 2017

  Vice President, Internal Audit and Advisory Services, The AES Corporation

  2014 - 2015

  Deputy Corporate Controller, The AES Corporation

  2014 - 2014

  Assistant Corporate Controller, Global Controllership, The AES Corporation

  2013 - 2014

  Controller, Global Utilities, The AES Corporation

  2011 - 2013

Name
Cornew, Kenneth W.

Age   Position
53   Senior Executive Vice President and Chief Commercial Officer, Exelon;

  President and CEO, Generation

  Executive Vice President and Chief Commercial Officer, Exelon

  President and Chief Executive Officer, Constellation

  Period
  2013 - Present

  2013 - Present

  2012 - 2013

  2012 - 2013

Pacilio, Michael J.

58   Executive Vice President and Chief Operating Officer, Exelon Generation

  2015 - Present

  President, Exelon Nuclear; Senior Vice President

  2010 - 2015

  and Chief Nuclear Officer, Generation

Hanson, Bryan C

53

President and Chief Nuclear Officer, Exelon Nuclear; Senior Vice President,
Exelon Generation

2015 - Present

McHugh, James

47   Executive Vice President, Exelon; Chief Executive Officer, Constellation

  2018 - Present

  Senior Vice President, Portfolio Management & Strategy, Constellation

  Vice President, Portfolio Management, Constellation

Barnes, John

55   Senior Vice President, Generation; President, Exelon Power

Senior Vice President, Generation, Senior Vice President and Chief Operating
Officer, Exelon Power

Wright, Bryan P.

52   Senior Vice President and Chief Financial Officer, Generation

  Senior Vice President, Corporate Finance, Exelon

Bauer, Matthew N.

42   Vice President and Controller, Generation

  Vice President and Controller, BGE

  Vice President of Power Finance, Exelon Power

27

  2016 - 2018

  2012 - 2016

  2018 - Present

2012 - 2018

  2013 - Present

  2012 - 2013

  2016 - Present

  2014 - 2016

  2012 - 2014

 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
   
 
   
 
   
 
   
   
   
 
 
   
 
   
   
 
   
   
   
 
 
 
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
 
 
 
   
   
   
 
 
   
 
   
   
   
 
 
   
 
   
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ComEd

Name
Dominguez, Joseph

Age   Position
56   Chief Executive Officer, ComEd

Executive Vice President, Governmental & Regulatory Affairs and Public
Policy, Exelon

  Period
  2018 - Present

2015 - 2018

Senior Vice President, Governmental & Regulatory Affairs and Public Policy,
Exelon

2012 - 2015

Donnelly, Terence R.

58   President and Chief Operating Officer, ComEd

  Executive Vice President and Chief Operating Officer, ComEd

  2018 - Present

  2012 - 2018

Jones, Jeanne M.

39   Senior Vice President, Chief Financial Officer and Treasurer, ComEd

  2018 - Present

  Vice President, Finance, Exelon Nuclear

  Director, Finance, Exelon Nuclear

Park, Jane

46   Senior Vice President, Customer Operations, ComEd

  Vice President, Regulatory Policy & Strategy, ComEd

  Director, Business Strategy & Technology, ComEd

  Chief of Staff to President and Chief Executive Officer, ComEd

Gomez, Veronica

49

Senior Vice President, Regulatory and Energy Policy and General Counsel,
ComEd

  2014 - 2018

  2013 - 2014

  2018 - Present

  2016 - 2018

  2014 - 2016

  2012 - 2014

2017 - Present

  Vice President and Deputy General Counsel, Litigation, Exelon

  2012 - 2017

Marquez Jr., Fidel

57   Senior Vice President, Governmental and External Affairs, ComEd

  2012 - Present

McGuire, Timothy M.

60   Senior Vice President, Distribution Operations, ComEd

  Vice President, Transmission and Substations, ComEd

Kozel, Gerald J.

46   Vice President, Controller, ComEd

  Assistant Corporate Controller, Exelon

  2016 - Present

  2010 - 2016

  2013 - Present

  2012 - 2013

28

 
 
 
   
 
 
 
   
 
 
 
   
   
   
 
 
   
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
 
   
 
   
 
   
   
   
 
 
 
 
   
 
   
   
   
 
 
   
   
   
 
 
   
 
   
   
   
 
 
   
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PECO

Name
Innocenzo, Michael A.

  Age

  Position

53   President and Chief Executive Officer, PECO

  Senior Vice President and Chief Operations Officer, PECO

McDonald, John

61   Senior Vice President and Chief Operations Officer, PECO

  Vice President, Integration, Pepco Holdings

  Vice President, Technical Services

  Period
  2018 - Present

  2012 - 2018

  2018 - Present

  2016 - 2018

  2006 - 2016

Stefani, Robert J.

44   Senior Vice President, Chief Financial Officer and Treasurer, PECO

  2018 - Present

  Vice President, Corporate Development, Exelon

  Director, Corporate Development, Exelon

Murphy, Elizabeth A.

59   Senior Vice President, Governmental and External Affairs, PECO

  Vice President, Governmental and External Affairs, PECO

Webster Jr., Richard G.

57   Vice President, Regulatory Policy and Strategy, PECO

Feldhake, Lauren

53   Vice President, Customer Operations, PECO

Diaz Jr., Romulo L.

Bailey, Scott A.

  Director, Customer Care, PECO

  Director, Customer Financial Operations, PECO

72   Vice President and General Counsel, PECO

42   Vice President and Controller, PECO

29

  2015 - 2018

  2012 - 2015

  2016 - Present

  2012 - 2016

  2012 - Present

  2017 - Present

  2014 - 2017

  2009 - 2014

  2012 - Present

  2012 - Present

 
 
   
 
   
   
   
 
 
   
 
   
 
 
   
 
   
 
   
   
   
 
 
   
 
   
   
   
 
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
   
   
 
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BGE

Name
Butler, Calvin G.

  Age

  Position

49   Chief Executive Officer, BGE

  Senior Vice President, Regulatory and External Affairs, BGE

  Senior Vice President, Corporate Affairs, Exelon

Woerner, Stephen J.

51   President, BGE

  Chief Operating Officer, BGE

  Senior Vice President, BGE

  Period
  2014 - Present

  2013 - 2014

  2011 - 2013

  2014 - Present

  2012 - Present

  2009 - 2014

Vahos, David M.

46   Senior Vice President, Chief Financial Officer and Treasurer, BGE

  2016 - Present

Núñez, Alexander G. 

47   Senior Vice President, Regulatory and External Affairs, BGE

  Vice President, Chief Financial Officer and Treasurer, BGE

  Vice President and Controller, BGE

Case, Mark D.

Oddoye, Rodney

Corse, John

  Vice President, Governmental and External Affairs, BGE

  Director, State Affairs, BGE

57   Vice President, Strategy and Regulatory Affairs, BGE

42   Vice President, Customer Operations, BGE

  Director, Northeast Regional Electric Operations, BGE

  Director, Financial Operations, BGE

  Manager, Distribution Operations, BGE

58   Vice President and General Counsel, BGE

  Associate General Counsel, Exelon

Holmes, Andrew W.

50   Vice President and Controller, BGE

  Director, Generation Accounting, Exelon

  Director, Derivatives and Technical Accounting, Exelon

30

  2014 - 2016

  2012 - 2014

  2016 - Present

  2013 - 2016

  2012 - 2013

  2012 - Present

  2018 - Present

  2016 - 2018

  2015 - 2016

  2013 - 2015

  2018 - Present

  2012 - 2018

  2016 - Present

  2013 - 2016

  2008 - 2013

 
 
   
 
   
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
 
   
 
   
   
   
 
 
   
   
   
 
 
   
 
   
 
   
 
   
   
   
 
 
   
 
   
   
   
 
 
   
 
   
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PHI, Pepco, DPL and ACE

Name

Velazquez, David M.

  Age

  Position

59   President and Chief Executive Officer, PHI

  Executive Vice President, Pepco Holdings, Inc.

  President and Chief Executive Officer, Pepco, DPL and ACE

  Period
  2016 - Present

  2009 - 2016

  2009 - Present

Anthony, J. Tyler

54   Senior Vice President and Chief Operating Officer, PHI, Pepco, DPL and ACE   2016 - Present

Barnett, Phillip S.

  Senior Vice President, Distribution Operations, ComEd

  2010 - 2016

55

Senior Vice President, Chief Financial Officer and Treasurer PHI, Pepco, DPL
and ACE

2018 - Present

  Senior Vice President and Chief Financial Officer, PECO

  Treasurer, PECO

  2007 - 2018

  2012 - 2018

Lavinson, Melissa

49

Senior Vice President, Governmental & External Affairs, PHI, Pepco, DPL and
ACE

2018 - Present

Vice President, Federal Affairs and Policy and Chief Sustainability Officer,
PG&E Corporation

  Vice President, Federal Affairs, PG&E Corporation

Stark, Wendy E.

46

Senior Vice President, Legal and Regulatory Strategy and General Counsel,
PHI, Pepco, DPL and ACE

  Vice President and General Counsel, PHI, Pepco DPL and ACE

  Deputy General Counsel, Pepco Holdings, Inc.

2015 - 2018

  2012 - 2015

2019 - Present

  2016 - 2018

  2012 - Present

McGowan, Kevin M.

57   Vice President, Regulatory Policy and Strategy, PHI, Pepco, DPL and ACE

  2016 - Present

Aiken, Robert

52   Vice President and Controller, PHI, Pepco, DPL and ACE

  Vice President and Controller, Generation

  Vice President, Regulatory Affairs, Pepco Holdings, Inc.

  2012 - 2016

  2016 - Present

  2012 - 2016

ITEM 1A.

RISK FACTORS

Each  of  the  Registrants  operates  in  a  market  and  regulatory  environment  that  poses  significant  risks,  many  of  which  are  beyond  that  Registrant’s  control.
Management of each Registrant regularly meets with the Chief Risk Officer and the Registrant's Risk Management Committee (RMC), which comprises officers
of the Registrant, to identify and evaluate the most significant risks of the Registrant's business and the appropriate steps to manage and mitigate those risks.
The Chief Risk Officer and senior executives of the Registrants discuss those risks with the Finance and Risk Committee and Audit Committee of the Exelon
Board of Directors and the ComEd, PECO, BGE and PHI Boards of Directors. In addition, the Generation Oversight Committee of the Exelon Board of Directors
evaluates risks related to the generation business. The risk factors discussed below could adversely affect one or more of the Registrants’ consolidated financial
statements and the market prices of their publicly traded securities. Each of the Registrants has disclosed the known material risks that affect its business at this
time. However, there may be further risks and uncertainties that are not presently known or that are not currently believed by a Registrant to be material that
could adversely affect its performance or financial condition in the future.

Exelon's consolidated financial statements are affected to a significant degree by: (1) Generation’s position as a predominantly nuclear generator selling power
into competitive energy markets with a concentration in select regions

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and  (2)  the  role  of  the  Utility  Registrants  as  operators  of  electric  transmission  and  distribution  systems  in  six  of  the  largest  metropolitan  areas  in  the  United
States.  Factors  that  affect  the  consolidated  financial  statements  of  the  Registrants  fall  primarily  under  the  following  categories,  all  of  which  are  discussed  in
further detail below:

• Market and Financial Factors. Exelon’s and Generation’s results of operations are affected by price fluctuations in the energy markets. Power prices
are a function of supply and demand, which in turn are driven by factors such as (1) the price of fuels, in particular the price of natural gas, which affects
the  prices  that  Generation  can  obtain  for  the  output  of  its  power  plants,  (2)  the  presence  of  other  generation  resources  in  the  markets  in  which
Generation’s  output  is  sold,  (3)  the  demand  for  electricity  in  the  markets  where  the  Registrants  conduct  their  business,  (4)  the  impacts  of  on-going
competition in the retail channel and (5) emerging technologies and business models.

•

•

Regulatory and Legislative Factors. The regulatory and legislative factors that affect the Registrants include changes to the laws and regulations that
govern competitive markets and utility regulatory business model cost recovery, tax policy, zero emission credit programs and environmental policy. In
particular,  Exelon’s  and  Generation’s  financial  performance  could  be  affected  by  changes  in  the  design  of  competitive  wholesale  power  markets  or
Generation’s  ability to sell power in those  markets.  In  addition,  potential  regulation  and  legislation,  including regulation  or legislation  regarding  climate
change and renewable portfolio standards (RPS), could have significant effects on the Registrants. Also, returns for the Utility Registrants are influenced
significantly by state regulation and regulatory proceedings.

Operational Factors. The Registrants’ operational performance is subject to those factors inherent in running the nation’s largest fleet of nuclear power
reactors  and  large  electric  and  gas  distribution  systems.  The  safe,  secure  and  effective  operation  of  the  nuclear  facilities  and  the  ability  to  effectively
manage the associated decommissioning obligations as well as the ability to maintain the availability, reliability, safety and security of its energy delivery
systems  are  fundamental  to  Exelon’s  ability  to  achieve  value-added  growth  for  customers,  communities  and  shareholders.  Additionally,  the  operating
costs  of  the  Registrants  and  the  opinions  of  their  customers,  regulators  and  shareholders  are  affected  by  those  companies’  ability  to  maintain  the
reliability, safety and efficiency of their energy delivery systems.

A discussion of each of these risk categories and other risk factors is included below.

Market and Financial Factors

Generation  is  exposed  to  depressed  prices  in  the  wholesale  and  retail  power  markets,  which  could  negatively  affect  its  consolidated
financial statements (Exelon and Generation).

Generation is exposed to commodity price risk for the unhedged portion of its electricity generation supply portfolio. Generation’s earnings and cash flows are
therefore exposed to variability of spot and forward market prices in the markets in which it operates.

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Price  of  Fuels.  The  spot  market  price  of  electricity  for  each  hour  is  generally  determined  by  the  marginal  cost  of  supplying  the  next  unit  of  electricity  to  the
market during that hour. Thus, the market price of power is affected by the market price of the marginal fuel used to generate the electricity unit.

Demand and Supply. The market price for electricity is also affected by changes in the demand for electricity and the available supply of electricity. Unfavorable
economic conditions, milder than normal weather, and the growth of energy efficiency and demand response programs could each depress demand. In addition,
in some markets, the supply of electricity could often exceed demand during some hours of the day, resulting in loss of revenue for base-load generating plants
such as Exelon's nuclear plants.

Retail Competition. Generation’s retail operations compete for customers in a competitive environment, which affects the margins that Generation can earn and
the volumes that it is able to serve. In periods of sustained low natural gas and power prices and low market volatility, retail competitors can aggressively pursue
market  share  because  the  barriers  to  entry  can  be  low  and  wholesale  generators  (including  Generation)  use  their  retail  operations  to  hedge  generation
output. Increased or more aggressive competition could adversely affect overall gross margins and profitability in Generation’s retail operations.

Sustained  low  market  prices  or  depressed  demand  and  over-supply  could  adversely  affect  Exelon’s  and  Generation’s  consolidated  financial  statements  and
such impacts could be emphasized given Generation’s concentration of base-load electric generating capacity within primarily two geographic market regions,
namely the Midwest and the Mid-Atlantic. These impacts could adversely affect Exelon’s and Generation’s ability to fund regulated utility growth for the benefit of
customers,  reduce  debt  and  provide  attractive  shareholder  returns.  In  addition,  such  conditions  may  no  longer  support  the  continued  operation  of  certain
generating facilities, which could adversely affect Exelon's and Generation's result of operations through accelerated depreciation expense, impairment charges
related to inventory that cannot be used at other nuclear units and cancellation of in-flight capital projects, accelerated amortization of plant specific nuclear fuel
costs, severance costs, accelerated asset retirement obligation expense related to future decommissioning activities, and additional funding of decommissioning
costs, which can be offset in whole or in part by reduced operating and maintenance expenses. See Note 8 — Early Plant Retirements of the Combined Notes to
Consolidated Financial Statements for additional information.

In  addition  to  price  fluctuations,  Generation  is  exposed  to  other  risks  in  the  power  markets  that  are  beyond  its  control  and  could
negatively affect its results of operations (Exelon and Generation).

Credit Risk. In the bilateral markets, Generation is exposed to the risk that counterparties that owe Generation money, or are obligated to purchase energy or
fuel from Generation, will not perform under their obligations for operational or financial reasons. In the event the counterparties to these arrangements fail to
perform, Generation could be forced to purchase or sell energy or fuel in the wholesale markets at less favorable prices and incur additional losses, to the extent
of amounts, if any, already paid to the counterparties. In the spot markets, Generation is exposed to risk as a result of default sharing mechanisms that exist
within  certain  markets,  primarily  RTOs  and  ISOs,  the  purpose  of  which  is  to  spread  such  risk  across  all  market  participants.  Generation  is  also  a  party  to
agreements with entities in the energy sector that have experienced rating downgrades or other financial difficulties. In addition, Generation’s retail sales subject
it  to  credit  risk  through  competitive  electricity  and  natural  gas  supply  activities  to  serve  commercial  and  industrial  companies,  governmental  entities  and
residential customers. Retail credit risk results when customers default on their contractual obligations. This risk represents the loss that could be incurred due to
the nonpayment of a customer’s account balance, as well as the loss from the resale of energy previously committed to serve the customer.

Market Designs. The wholesale markets vary from region to region with distinct rules, practices and procedures. Changes in these market rules, problems with
rule implementation, or failure of any of these markets could adversely affect Generation’s business. In addition, a significant decrease in market participation
could affect market liquidity and have a detrimental effect on market stability.

The Registrants are potentially affected by emerging technologies that could over time affect or transform the energy industry, including
technologies related to energy generation, distribution and consumption (All Registrants).

Some of these technologies include, but are not limited to, further development or applications of technologies related to shale gas production, renewable energy
technologies, energy efficiency, distributed generation and energy

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Table of Contents

storage devices. Such developments could affect the price of energy, levels of customer-owned generation, customer expectations and current business models
and  make  portions  of  our  electric  system  power  supply  and  transmission  and/or  distribution  facilities  obsolete  prior  to  the  end  of  their  useful  lives.  Such
technologies  could  also  result  in  further  declines  in  commodity  prices  or  demand  for  delivered  energy.  Each  of  these  factors  could  materially  affect  the
Registrants’ consolidated financial statements through, among other things, reduced operating revenues, increased operating and maintenance expenses, and
increased  capital  expenditures,  as  well  as  potential  asset  impairment  charges  or  accelerated  depreciation  and  decommissioning  expenses  over  shortened
remaining asset useful lives.

Market performance and other factors could decrease the value of NDT funds and employee benefit plan assets and could increase the
related employee benefit plan obligations, which then could require significant additional funding (All Registrants).

Disruptions in the capital markets and their actual or perceived effects on particular businesses and the greater economy could adversely affect the value of the
investments held within Generation’s NDTs and Exelon’s employee benefit plan trusts. The Registrants have significant obligations in these areas and Exelon
and  Generation  hold  substantial  assets  in  these  trusts  to  meet  those  obligations.  The  asset  values  are  subject  to  market  fluctuations  and  will  yield  uncertain
returns, which could fall below the Registrants’ projected return rates. A decline in the market value of the NDT fund investments could increase Generation’s
funding  requirements  to  decommission  its  nuclear  plants.  A  decline  in  the  market  value  of  the  pension  and  OPEB  plan  assets  will  increase  the  funding
requirements associated with Exelon’s pension and OPEB plan obligations. Additionally, Exelon’s pension and OPEB plan liabilities are sensitive to changes in
interest  rates.  As  interest  rates  decrease,  the  liabilities  increase,  potentially  increasing  benefit  costs  and  funding  requirements.  Changes  in  demographics,
including increased numbers of retirements or changes in life expectancy assumptions or changes to Social Security or Medicare eligibility requirements could
also  increase  the  costs  and  funding  requirements  of  the  obligations  related  to  the  pension  and  OPEB  plans.  If  future  increases  in  pension  and  other
postretirement  costs  as  a  result  of  reduced  plan  assets  or  other  factors  cannot  be  recovered,  or  cannot  be  recovered  in  a  timely  manner,  from  the  Utility
Registrants' customers, the consolidated financial statements of the Utility Registrants could be negatively affected. Ultimately, if the Registrants are unable to
manage  the  investments  within  the  NDT  funds  and  benefit  plan  assets  and  are  unable  to  manage  the  related  benefit  plan  liabilities  and  the  related  asset
retirement obligations, their consolidated financial statements could be negatively impacted.

Unstable capital and credit markets and increased volatility in commodity markets could adversely affect the Registrants’ businesses in
several ways, including the availability and cost of short-term funds for liquidity requirements, the Registrants’ ability to meet long-term
commitments, Generation’s ability to hedge effectively its generation portfolio, and the competitiveness and liquidity of energy markets;
each could negatively impact the Registrants’ consolidated financial statements (All Registrants).

The Registrants rely on the capital markets, particularly for publicly offered debt, as well as the banking and commercial paper markets, to meet their financial
commitments and short-term liquidity needs if internal funds are not available from the Registrants’ respective operations. Disruptions in the capital and credit
markets in the United States or abroad could adversely affect the Registrants’ ability to access the capital markets or draw on their respective bank revolving
credit  facilities.  The  Registrants’  access  to  funds  under  their  credit  facilities  depends  on  the  ability  of  the  banks  that  are  parties  to  the  facilities  to  meet  their
funding commitments. Those banks may not be able to meet their funding commitments to the Registrants if they experience shortages of capital and liquidity or
if they experience excessive volumes of borrowing requests from the Registrants and other borrowers within a short period of time. The inability to access capital
markets  or  credit  facilities,  and  longer-term  disruptions  in  the  capital  and  credit  markets  as  a  result  of  uncertainty,  changing  or  increased  regulation,  reduced
alternatives  or  failures  of  significant  financial  institutions  could  result  in  the  deferral  of  discretionary  capital  expenditures,  changes  to  Generation’s  hedging
strategy in order to reduce collateral posting requirements, or a reduction in dividend payments or other discretionary uses of cash.

In  addition,  the  Registrants  have  exposure  to  worldwide  financial  markets,  including  Europe,  Canada  and  Asia.  Disruptions  in  these  markets  could  reduce  or
restrict the Registrants’ ability to secure sufficient liquidity or secure liquidity at reasonable terms. As of December 31, 2018 , approximately 19% , or $1.8 billion ,
19% , or $1.8 billion , and 18% , or $1.7 billion of the Registrants’ available credit facilities were with European, Canadian and Asian banks, respectively. The
credit facilities include $9.7 billion (including bilateral credit facilities and credit facilities for project

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finance) in aggregate total commitments of which $8.0 billion was available as of December 31, 2018 . As of December 31, 2018 , there were no borrowings
under  Generation's  bilateral  credit  facilities.  See  Note  13 — Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for
additional information on the credit facilities.

The strength and depth of competition in energy markets depend heavily on active participation by multiple trading parties, which could be adversely affected by
disruptions in the capital and credit markets and legislative and regulatory initiatives that could affect participants in commodities transactions. Reduced capital
and liquidity and failures of significant institutions that participate in the energy markets could diminish the liquidity and competitiveness of energy markets that
are important to the respective businesses of the Registrants. Perceived weaknesses in the competitive strength of the energy markets could lead to pressures
for greater regulation of those markets or attempts to replace market structures with other mechanisms for the sale of power, including the requirement of long-
term contracts, which could have a material adverse effect on Exelon’s and Generation’s consolidated financial statements.

If any of the Registrants were to experience a downgrade in its credit ratings to below investment grade or otherwise fail to satisfy the
credit  standards  in  its  agreements  with  its  counterparties,  it  would  be  required  to  provide  significant  amounts  of  collateral  under  its
agreements with counterparties and could experience higher borrowing costs (All Registrants).

Generation’s business is subject to credit quality standards that could require market participants to post collateral for their obligations. If Generation were to be
downgraded  or  lose  its  investment  grade  credit  rating  (based  on  its  senior  unsecured  debt  rating)  or  otherwise  fail  to  satisfy  the  credit  standards  of  trading
counterparties,  it  would  be  required  under  its  hedging  arrangements  to  provide  collateral  in  the  form  of  letters  of  credit  or  cash,  which  could  have  a  material
adverse effect upon its liquidity. The amount of collateral required to be provided by Generation at any point in time depends on a variety of factors, including
(1) the notional amount of the applicable hedge, (2) the nature of counterparty and related agreements, and (3) changes in power or other commodity prices. In
addition, if Generation were downgraded, it could experience higher borrowing costs as a result of the downgrade. Generation could experience a downgrade in
its ratings if any of the credit rating agencies concludes that the level of business or financial risk and overall creditworthiness of the power generation industry in
general, or Generation in particular, has deteriorated. Changes in ratings methodologies by the credit rating agencies could also have a negative impact on the
ratings  of  Generation.  Generation  has  project-specific  financing  arrangements  and  must  meet  the  requirements  of  various  agreements  relating  to  those
financings.  Failure to meet those arrangements could give rise to a project-specific financing default which, if not cured or waived, could result in the specific
project being required to repay the associated debt or other borrowings earlier than otherwise anticipated, and if such repayment were not made, the lenders or
security  holders  would  generally  have  broad  remedies,  including  rights  to  foreclose  against  the  project  assets  and  related  collateral  or  to  force  the  Exelon
subsidiaries  in  the  project-specific  financings  to  enter  into  bankruptcy  proceedings.  The  impact  of  bankruptcy  on  such  arrangements  may  be  a  significant
assumption in performing impairment assessments of the project assets.

The Utility Registrants' operating agreements with PJM and PECO's, BGE's and DPL's natural gas procurement contracts contain collateral provisions that are
affected  by  their  credit  rating  and  market  prices.  If  certain  wholesale  market  conditions  were  to  exist  and  the  Utility  Registrants  were  to  lose  their  investment
grade credit ratings (based on their senior unsecured debt ratings), they would be required to provide collateral in the forms of letters of credit or cash, which
could have a material adverse effect upon their remaining sources of liquidity. PJM collateral posting requirements will generally increase as market prices rise
and decrease as market prices fall. Collateral posting requirements for PECO, BGE and DPL, with respect to their natural gas supply contracts, will generally
increase  as  forward  market  prices  fall  and  decrease  as  forward  market  prices  rise.  Given  the  relationship  to  forward  market  prices,  contract  collateral
requirements can be volatile. In addition, if the Utility Registrants were downgraded, they could experience higher borrowing costs as a result of the downgrade.

A  Utility  Registrant  could  experience  a  downgrade  in  its  ratings  if  any  of  the  credit  rating  agencies  concludes  that  the  level  of  business  or  financial  risk  and
overall creditworthiness of the utility industry in general, or a Utility Registrant in particular, has deteriorated. A Utility Registrant could experience a downgrade if
its  current  regulatory  environment  becomes  less  predictable  by  materially  lowering  returns  for  the  Utility  Registrant  or  adopting  other  measures  to  limit  utility
rates.  Additionally,  the  ratings  for  a  Utility  Registrant  could  be  downgraded  if  its  financial  results  are  weakened  from  current  levels  due  to  weaker  operating
performance  or  due  to  a  failure  to  properly  manage  its  capital  structure.  In  addition,  changes  in  ratings  methodologies  by  the  agencies  could  also  have  a
negative impact on the ratings of the Utility Registrants.

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The Utility Registrants conduct their respective businesses and operate under governance models and other arrangements and procedures intended to assure
that  the  Utility  Registrants  are  treated  as  separate,  independent  companies,  distinct  from  Exelon  and  other  Exelon  subsidiaries  in  order  to  isolate  the  Utility
Registrants  from Exelon and other  Exelon subsidiaries in the event  of financial difficulty at Exelon  or another  Exelon subsidiary.  These measures  (commonly
referred to as “ring-fencing”) could help avoid or limit a downgrade in the credit ratings of the Utility Registrants in the event of a reduction in the credit rating of
Exelon. Despite these  ring-fencing measures, the credit ratings of  the Utility Registrants could remain linked,  to some degree,  to the credit ratings of Exelon.
Consequently, a reduction in the credit rating of Exelon could result in a reduction of the credit rating of some or all of the Utility Registrants. A reduction in the
credit rating of a Utility Registrant could have a material adverse effect on the Utility Registrant.

See  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF  OPERATIONS  —  Liquidity  and  Capital
Resources — Credit Matters — Market Conditions and Security Ratings for additional information regarding the potential impacts of credit downgrades on the
Registrants’ cash flows.

Generation’s financial performance could be negatively affected by price volatility, availability and other risk factors associated with the
procurement of nuclear and fossil fuel (Exelon and Generation).

Generation depends on nuclear fuel and fossil fuels to operate most of its generating facilities. Nuclear fuel is obtained predominantly through long-term uranium
supply contracts, contracted conversion services, contracted enrichment services, or a combination thereof, and contracted fuel fabrication services. Natural gas
and oil are procured for generating plants through annual, short-term and spot-market purchases. The supply markets for nuclear fuel, natural gas and oil are
subject to price fluctuations, availability restrictions and counterparty default that could negatively affect the consolidated financial statements for Generation.

Generation’s  risk  management  policies  cannot  fully  eliminate  the  risk  associated  with  its  commodity  trading  activities  (Exelon  and
Generation).

Generation’s asset-based power position as well as its power marketing, fuel procurement and other commodity trading activities expose Generation to risks of
commodity  price  movements.  Generation  buys  and  sells  energy  and  other  products  and  enters  into  financial  contracts  to  manage  risk  and  hedge  various
positions in Generation’s power generation portfolio. Generation is exposed to volatility in financial results for unhedged positions as well as the risk of ineffective
hedges. Generation attempts to manage this exposure through enforcement of established risk limits and risk management procedures. These risk limits and
risk management procedures may not work as planned and cannot eliminate all risks associated with these activities. Even when its policies and procedures are
followed,  and  decisions  are  made  based  on  projections  and  estimates  of  future  performance,  results  of  operations  could  be  diminished  if  the  judgments  and
assumptions  underlying  those  decisions  prove  to  be  incorrect.  Factors,  such  as  future  prices  and  demand  for  power  and  other  energy-related  commodities,
become more difficult to predict and the calculations become less reliable the further into the future estimates are made. As a result, Generation cannot predict
the impact that its commodity trading activities and risk management decisions could have on its business or consolidated financial statements.

Financial performance and load requirements could be adversely affected if Generation is unable to effectively manage its power portfolio
(Exelon and Generation).

A significant portion of Generation’s power portfolio is used to provide power under procurement contracts with the Utility Registrants and other customers. To
the extent portions of the power portfolio are not needed for that purpose, Generation’s output is sold in the wholesale power markets. To the extent its power
portfolio  is  not  sufficient  to  meet  the  requirements  of  its  customers  under  the  related  agreements,  Generation  must  purchase  power  in  the  wholesale  power
markets.  Generation’s  financial  results  could  be  negatively  affected  if  it  is  unable  to  cost-effectively  meet  the  load  requirements  of  its  customers,  manage  its
power portfolio or effectively address the changes in the wholesale power markets.

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Challenges  to  tax  positions  taken  by  the  Registrants  as  well  as  tax  law  changes  and  the  inherent  difficulty  in  quantifying  potential  tax
effects of business decisions, could impact the Registrants’ consolidated financial statements. (All Registrants).

Corporate  Tax  Reform.  On  December  22,  2017,  President  Trump  signed  into  law  the  TCJA.  See  Note  14  -  Income  Taxes  of  the  Combined  Notes  to
Consolidated Financial Statements for additional information.

While  the  Registrants’  current  tax  accounting  and  future  expectations  are  based  on  management’s  present  understanding  of  the  provisions  under  the  TCJA,
further interpretive guidance of the TCJA’s provisions could result in further adjustments that could have a material impact to the Registrants’ future consolidated
financial statements.

The Utility Registrants have made their best estimate regarding the probability and timing of settlements of net regulatory liabilities established pursuant to the
TCJA.  However,  the  amount  and  timing  of  the  settlements  may  change  based  on  decisions  and  actions  by  the  rate  regulators,  which  could  have  a  material
impact on the Utility Registrants’ future consolidated financial statements.

Tax reserves. The Registrants are required to make judgments in order to estimate their obligations to taxing authorities. These tax obligations include income,
real estate, sales and use and employment-related taxes and ongoing appeal issues related to these tax matters. These judgments include reserves established
for potential adverse outcomes regarding tax positions that have been taken that could be subject to challenge by the tax authorities. See Note 1 — Significant
Accounting Policies and Note 14 — Income Taxes of the Combined Notes to Consolidated Financial Statements for additional information.

Increases  in  customer  rates,  including  increases  in  the  cost  of  purchased  power  and  increases  in  natural  gas  prices  for  the  Utility
Registrants,  and  the  impact  of  economic  downturns  could  lead  to  greater  expense  for  uncollectible  customer  balances.  Additionally,
increased rates could lead to decreased volumes delivered. Both of these factors could decrease Generation’s and the Utility Registrants'
results from operations, cash flows or financial positions (All Registrants).

The impacts of economic downturns on the Utility Registrants' customers, such as unemployment for residential customers and less demand for products and
services provided by commercial and industrial customers, and the related regulatory limitations on residential service terminations, could result in an increase in
the number of uncollectible customer balances', which would negatively affect the Utility Registrants' consolidated financial statements. Generation's customer-
facing energy delivery activities face similar economic downturn risks, such as lower volumes sold and increased expense for uncollectible customer balances
which  could  negatively  affect  Generation's  consolidated  financial  statements.  See  ITEM  7A.  QUANTITATIVE  AND  QUALITATIVE  DISCLOSURES  ABOUT
MARKET RISK for additional information of the Registrants’ credit risk.

The Utility Registrants' current procurement plans include purchasing power through contracted suppliers and in the spot market. ComEd’s, PECO’s and ACE's
costs of purchased power are charged to customers without a return or profit component. BGE's, Pepco's and DPL's SOS rates charged to customers recover
their wholesale power supply costs and include a return component. For PECO and DPL, purchased natural gas costs are charged to customers with no return
or profit component. For BGE, purchased natural gas costs are charged to customers using a MBR mechanism that compares the actual cost of gas to a market
index. The difference between the actual cost and the market index is shared equally between shareholders and customers. Purchased power and natural gas
prices  fluctuate  based  on  their  relevant  supply  and  demand.  Significantly  higher  rates  related  to  purchased  power  and  natural  gas  could  result  in  declines  in
customer  usage,  lower  revenues  and  potentially  additional  uncollectible  accounts  expense  for  the  Utility  Registrants.  In  addition,  any  challenges  by  the
regulators  or  the  Utility  Registrants  as  to  the  recoverability  of  these  costs  could  have  a  material  adverse  effect  in  the  Registrants’  consolidated  financial
statements.  Also,  the  Utility  Registrants'  cash  flows  could  be  adversely  affected  by  differences  between  the  time  period  when  electricity  and  natural  gas  are
purchased and the ultimate recovery from customers.

The effects of weather could impact the Registrants’ consolidated financial statements (All Registrants).

Weather conditions directly influence the demand for electricity and natural gas and affect the price of energy commodities. Temperatures above normal levels in
the  summer  tend  to  increase  summer  cooling  electricity  demand  and  revenues,  and  temperatures  below  normal  levels  in  the  winter  tend  to  increase  winter
heating electricity and gas demand and revenues. Moderate temperatures adversely affect the usage of energy and resulting revenues

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at PECO, DPL Delaware and ACE. Due to revenue decoupling, BGE, Pepco and DPL Maryland recognize revenues at MDPSC and DCPSC-approved levels
per customer, regardless of what actual distribution volumes are for a billing period, and are not affected by actual weather with the exception of major storms.
Pursuant to the Future Energy Jobs Act (FEJA), beginning in 2017, customer rates for ComEd are adjusted to eliminate the favorable and unfavorable impacts
of weather and customer usage patterns on distribution revenue.

Extreme weather conditions or damage resulting from storms could stress the Utility Registrants' transmission and distribution systems, communication systems
and  technology,  resulting  in  increased  maintenance  and  capital  costs  and  limiting  each  company’s  ability  to  meet  peak  customer  demand.  These  extreme
conditions  could  have  detrimental  effects  in the  Utility Registrants'  consolidated  financial  statements.  First  and  third  quarter  financial  results,  in  particular,  are
substantially dependent on weather conditions, and could make period comparisons less relevant.

Generation’s operations are also affected by weather, which affects demand for electricity as well as operating conditions. To the extent that weather is warmer
in  the  summer  or  colder  in  the  winter  than  assumed,  Generation  could  require  greater  resources  to  meet  its  contractual  commitments.  Extreme  weather
conditions or storms could affect the availability of generation and its transmission, limiting Generation’s ability to source or send power to where it is sold. In
addition, drought-like conditions limiting water usage could impact Generation’s ability to run certain generating assets at full capacity. These conditions, which
cannot be accurately predicted, could have an adverse effect by causing Generation to seek additional capacity at a time when wholesale markets are tight or to
seek to sell excess capacity at a time when markets are weak.

Certain long-lived assets and other assets recorded on the Registrants’ statements of financial position could become
impaired, which would result in write-offs of the impaired amounts (All Registrants).

Long-lived assets represent the single largest asset class on the Registrants’ statements of financial position. In addition, Exelon and Generation have significant
balances  related  to  unamortized  energy  contracts,  as  further  disclosed  in  Note  10  —  Intangible  Assets  of  the  Combined  Notes  to  Consolidated  Financial
Statements.  The  Registrants  evaluate  the  recoverability  of  the  carrying  value  of  long-lived  assets  to  be  held  and  used  whenever  events  or  circumstances
indicating  a  potential  impairment  exist.  Factors  such  as,  but  not  limited  to,  the  business  climate,  including  current  and  future  energy  and  market  conditions,
environmental regulation, and the condition of assets are considered when evaluating long-lived assets for potential impairment.  An impairment would require
the Registrants to reduce the carrying value of the long-lived asset to fair value through a non-cash charge to expense by the amount of the impairment, and
such an impairment could have a material adverse impact in the Registrants’ consolidated financial statements.

As of December 31, 2018 , Exelon's $6.7 billion carrying amount of goodwill primarily consists of $2.6 billion at ComEd relating to the acquisition of ComEd in
2000 upon the formation of Exelon and $4.0 billion at PHI primarily resulting from Exelon's acquisition of PHI in the first quarter of 2016. Under GAAP, goodwill
remains at its recorded amount unless it is determined to be impaired, which is generally based upon an annual analysis that compares the implied fair value of
the goodwill to its carrying value. If an impairment occurs, the amount of the impaired goodwill will be written-off to expense, which will also reduce equity. The
actual timing and amounts of any goodwill impairments will depend on many sensitive, interrelated and uncertain variables. Such an impairment would result in a
non-cash charge to expense, which could have a material adverse impact on Exelon's, ComEd's, and PHI's results of operations.

Regulatory  actions  or  changes  in  significant  assumptions,  including  discount  and  growth  rates,  utility  sector  market  performance  and  transactions,  projected
operating and capital cash flows for ComEd’s, Pepco’s, DPL’s, and ACE’s business, and the fair value of debt, could potentially result in future impairments of
Exelon’s, PHI’s, and ComEd’s goodwill, which could be material.

See ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS — Critical Accounting Policies
and Estimates, Note 6 — Property, Plant and Equipment, Note 7 — Impairment of Long-Lived Assets and Intangibles and Note 10 — Intangible Assets of the
Combined Notes to the Consolidated Financial Statements for additional information on long-lived asset and goodwill impairments.

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Exelon  and  its  subsidiaries  at  times  guarantee  the  performance  of  third  parties,  which  could  result  in  substantial  costs  in  the  event  of
non-performance  by  such  third  parties.  In  addition,  the  Registrants  could  have  rights  under  agreements  which  obligate  third  parties  to
indemnify  the  Registrants  for  various  obligations,  and  the  Registrants  could  incur  substantial  costs  in  the  event  that  the  applicable
Registrant is unable to enforce those agreements or the applicable third-party is otherwise unable to perform. The Registrants could also
incur substantial costs in the event that third parties are entitled to indemnification related to environmental or other risks in connection
with the acquisition and divestiture of assets (All Registrants).

Some of the Registrants have issued guarantees of the performance of third parties, which obligate the Registrant or its subsidiaries to perform in the event that
the third parties do not perform. In the event of non-performance by those third parties, a Registrant could incur substantial cost to fulfill its obligations under
these  guarantees.  Such  performance  guarantees  could  have  a  material  impact  in  the  consolidated  financial  statements  of  the  Registrant.  Some  of  the
Registrants have issued indemnities to third parties regarding environmental or other matters in connection with purchases and sales of assets and a Registrant
could  incur  substantial  costs  to  fulfill  its  obligations  under  these  indemnities  and  such  costs  could  adversely  affect  a  Registrant’s  consolidated  financial
statements.

Some  of  the  Registrants  have  entered  into  various  agreements  with  counterparties  that  require  those  counterparties  to  reimburse  a  Registrant  and  hold  it
harmless against  specified obligations and  claims. To  the extent that  any of these  counterparties  are affected  by deterioration  in their creditworthiness  or the
agreements are otherwise determined to be unenforceable, the affected Registrant could be held responsible for the obligations, which could adversely impact
that  Registrant’s  consolidated  financial  statements.  Each  of  the  Utility  Registrants  has  transferred  its  former  generation  business  to  a  third  party  and  in  each
case the transferee may have agreed to assume certain obligations and to indemnify the applicable Utility Registrant for such obligations. In connection with the
restructurings under which ComEd, PECO and BGE transferred their generating assets to Generation, Generation assumed certain of ComEd’s, PECO’s and
BGE's rights and obligations with respect to their former generation businesses. Further, ComEd, PECO and BGE may have entered into agreements with third
parties under which the third-party agreed to indemnify ComEd, PECO or BGE for certain obligations related to their respective former generation businesses
that  have  been  assumed  by  Generation  as  part  of  the  restructuring.  If  the  third-party,  Generation  or  the  transferee  of  Pepco's,  DPL's  or  ACE’s  generation
facilities experienced  events  that  reduced  its creditworthiness  or  the  indemnity  arrangement  became  unenforceable,  the  applicable  Utility Registrant  could be
liable for any existing or future claims, which could impact that Utility Registrant's consolidated financial statements. In addition, the Utility Registrants may have
residual liability under certain laws in connection with their former generation facilities.

Regulatory and Legislative Factors

The  Registrants’  generation  and  energy  delivery  businesses  are  highly  regulated  and  could  be  subject  to  regulatory  and  legislative
actions  that  adversely  affect  their  consolidated  financial  statements.  Fundamental  changes  in  regulation  or  legislation  or  violation  of
tariffs  or  market  rules  and  anti-manipulation  laws,  could  disrupt  the  Registrants’  business  plans  and  adversely  affect  their  operations,
cash flows or financial results (All Registrants).

Substantially  all  aspects  of  the  businesses  of  the  Registrants  are  subject  to  comprehensive  Federal  or  state  regulation  and  legislation.  Further,  Exelon’s  and
Generation’s  consolidated  financial  statements  are  significantly  affected  by  Generation's  sales  and  purchases  of  commodities  at  market-based  rates,  as
opposed to cost-based or other similarly regulated rates, and Exelon’s and the Utility Registrants' consolidated financial statements are heavily dependent on the
ability of the Utility Registrants to recover their costs for the retail purchase and distribution of power and natural gas to their customers. Similarly, there is risk
that  financial  market  regulations  could  increase  the  Registrants’  compliance  costs  and  limit their  ability to  engage  in certain  transactions.  In the  planning  and
management  of  operations,  the  Registrants  must  address  the  effects  of  regulation  on  their  businesses  and  changes  in  the  regulatory  framework,  including
initiatives by Federal and state legislatures, RTOs, exchanges, ratemaking agencies and taxing authorities. Additionally, the Registrants need to be cognizant
and  understand  rule  changes  or  Registrant  actions  that  could  result  in  potential  violation  of  tariffs,  market  rules  and  anti-manipulation  laws.  Fundamental
changes in regulations or other adverse legislative actions affecting the Registrants’ businesses would require changes in their business planning models and
operations and could negatively impact their respective consolidated financial statements.

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State and federal regulatory and legislative developments related to emissions, climate change, tax reform, capacity market mitigation, energy price information,
resilience,  fuel  diversity  and  RPS  could  also  significantly  affect  Exelon’s  and  Generation’s  consolidated  financial  statements.  The  Registrants  cannot  predict
when or whether legislative and regulatory proposals could become law or what their effect will be on the Registrants.

Legislative and regulatory efforts in Illinois, New York and New Jersey to preserve the environmental attributes and reliability benefits of zero-emission nuclear-
powered  generating  facilities  through  zero  emission  credit  programs  are  subject  to  legal  challenges  and,  if  overturned,  could  negatively  impact  Exelon’s  and
Generation’s consolidated financial statements and result in the early retirement of certain of Generation’s nuclear plants.

Generation  could  be  negatively  affected  by  possible  Federal  or  state  legislative  or  regulatory  actions  that  could  affect  the  scope  and
functioning of the wholesale markets (Exelon and Generation).

Approximately 63% of Generation’s generating resources, which include directly owned assets and capacity obtained through long-term contracts, are located in
the area encompassed by PJM. Generation’s future results of operations will depend on (1) FERC’s continued adherence to and support for, policies that favor
the  preservation  of  competitive  wholesale  power  markets  and  recognize  the  value  of  zero-carbon  electricity  and  resiliency  and  (2)  the  absence  of  material
changes  to  market  structures  that  would  limit  or  otherwise  negatively  affect  market  competition.  Generation  could  also  be  adversely  affected  by  state  laws,
regulations or initiatives designed to reduce wholesale prices artificially below competitive levels or to subsidize existing or new generation.

FERC’s requirements for market-based rate authority, established in Order 697 and 816 and related subsequent orders, could pose a risk that Generation may
no  longer  satisfy  FERC’s  tests  for  market-based  rates.  Since  Order  697  became  final  in  June  2007,  Generation  has  obtained  orders  affirming  Generation’s
authority to sell at market-based rates and none denying that authority.

The Dodd-Frank Wall Street Reform and Consumer Protection Act (the Act) was enacted in July 2010. The part of the Act that affects Exelon most significantly
is  Title  VII,  which  is  known  as  the  Dodd-Frank  Wall  Street  Transparency  and  Accountability  Act  (Dodd-Frank).  Dodd-Frank  requires  a  new  regulatory  regime
for over-the-counter swaps (swaps), including mandatory clearing for certain categories of swaps, incentives to shift swap activity to exchange trading, margin
and capital requirements, and other obligations designed to promote transparency. The primary aim of Dodd-Frank is to regulate the key intermediaries in the
swaps  market,  which  entities  are  swap  dealers  (SDs), major  swap  participants  (MSPs),  or  certain  other  financial  entities,  but  the  law also  applies  to  a  lesser
degree to end-users of swaps. The CFTC’s Dodd-Frank regulations generally preserved the ability of end users in the energy industry to hedge their risks using
swaps  without  being  subject  to  mandatory  clearing,  and  many  of  the  other  substantive  regulations  that  apply  to  SDs,  MSPs,  and  other  financial  entities.
Generation manages, and expects to be able to continue to manage, its commercial activity to ensure that it does not have to register as an SD or MSP or other
type of covered financial entity.

There  are  some  rulemaking  proceedings  that  have  not  yet  been  finalized,  in  particular,  proposed  rules  on  position  limits  that  would  apply  to  both  Exchange-
traded  futures  contracts  and  economically-equivalent  over-the-counter  swaps.  Although  the  company  would  incur  some  costs  associated  with  monitoring  and
compliance with such rules, it does not expect the rules to have a material impact on its business operations.

The Utility Registrants could also be subject to some Dodd-Frank requirements to the extent they were to enter into swaps. However, at this time, management
of the Utility Registrants continue to expect that their companies will not be materially affected by Dodd-Frank.

Generation’s affiliation with the Utility Registrants, together with the presence of a substantial percentage of Generation’s physical asset
base within the Utility Registrants' service territories, could increase Generation’s cost of doing business to the extent future complaints
or challenges regarding the Utility Registrants' retail rates result in settlements or legislative or regulatory requirements funded in part by
Generation (Exelon and Generation).

Generation has significant generating resources within the service areas of the Utility Registrants and makes significant sales to each of them. Those facts tend
to cause Generation to be directly affected by developments in those markets. Government officials, legislators and advocacy groups are aware of Generation’s
affiliation with the Utility Registrants and its sales to each of them. In periods of rising utility rates, particularly when driven by increased

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costs of energy production and supply, those officials and advocacy groups could question or challenge costs and transactions incurred by the Utility Registrants
with  Generation,  irrespective  of  any  previous  regulatory  processes  or  approvals  underlying  those  transactions.  These  challenges  could  increase  the  time,
complexity and cost of the associated regulatory proceedings, and the occurrence of such challenges could subject Generation to a level of scrutiny not faced by
other unaffiliated competitors in those markets. In addition, government officials and legislators could seek ways to force Generation to contribute to efforts to
mitigate potential or actual rate increases, through measures such as generation-based taxes and contributions to rate-relief packages.

The Registrants could incur substantial costs to fulfill their obligations related to environmental and other matters (All Registrants).

The businesses which the Registrants operate are subject to extensive environmental regulation and legislation by local, state and Federal authorities. These
laws and regulations affect the manner in which the Registrants conduct their operations and make capital expenditures including how they handle air and water
emissions  and  solid  waste  disposal.  Violations  of  these  emission  and  disposal  requirements  could  subject  the  Registrants  to  enforcement  actions,  capital
expenditures  to  bring  existing  facilities  into  compliance,  additional  operating  costs  for  remediation  and  clean-up  costs,  civil  penalties  and  exposure  to  third
parties’ claims for alleged health or property damages or operating restrictions to achieve compliance. In addition, the Registrants are subject to liability under
these  laws for the  remediation  costs  for  environmental  contamination  of  property  now  or  formerly owned  by  the  Registrants  and  of property  contaminated  by
hazardous substances they generate. The Registrants have incurred and expect to incur significant costs related to environmental compliance, site remediation
and  clean-up.  Remediation  activities  associated  with  MGP  operations  conducted  by  predecessor  companies  are  one  component  of  such  costs.  Also,  the
Registrants  are  currently  involved  in  a  number  of  proceedings  relating  to  sites  where  hazardous  substances  have  been  deposited  and  could  be  subject  to
additional proceedings in the future.

If  application  of  Section  316(b)  of  the  Clean  Water  Act,  which  establishes  a  national  requirement  for  reducing  the  adverse  impacts  to  aquatic  organisms  at
existing generating stations, requires the retrofitting of cooling water intake structures at Salem or other Exelon power plants, this development could result in
material  costs  of  compliance.  See  Note  22 — Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional
information.

Additionally,  Generation  is  subject  to  exposure  for  asbestos-related  personal  injury  liability  alleged  at  certain  current  and  formerly  owned  generation
facilities. Future legislative action could require Generation to make a material contribution to a fund to settle lawsuits for alleged asbestos-related disease and
exposure.

In some cases, a third-party who has acquired assets from a Registrant has assumed the liability the Registrant could otherwise have for environmental matters
related to the transferred property. If the transferee is unable, or fails, to discharge the assumed liability, a regulatory authority or injured person could attempt to
hold the Registrant responsible, and the Registrant’s remedies against the transferee could be limited by the financial resources of the transferee. See Note 22
— Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional information.

Changes in the Utility Registrants' respective terms and conditions of service, including their respective rates, are subject to regulatory
approval  proceedings  and/or  negotiated  settlements  that  are  at  times  contentious,  lengthy  and  subject  to  appeal,  which  lead  to
uncertainty  as  to  the  ultimate  result  and  which  could  introduce  time  delays  in  effectuating  rate  changes  (Exelon  and  the  Utility
Registrants).

The Utility Registrants are required to engage in regulatory approval proceedings as a part of the process of establishing the terms and rates for their respective
services. These proceedings typically involve multiple parties, including governmental bodies and officials, consumer advocacy groups and various consumers
of energy, who have differing concerns but who have the common objective of limiting rate increases or even reducing rates. The proceedings generally have
timelines  that  may  not  be  limited  by  statute.  Decisions  are  subject  to  appeal,  potentially  leading  to  additional  uncertainty  associated  with  the  approval
proceedings. The potential duration of such proceedings creates a risk that rates ultimately approved by the applicable regulatory body may not be sufficient for
a  Utility  Registrant  to  recover  its  costs  by  the  time  the  rates  become  effective.  Established  rates  are  also  subject  to  subsequent  prudency  reviews  by  state
regulators, whereby various portions of rates could be adjusted, subject to refund or disallowed, including recovery mechanisms for costs associated with the
procurement of electricity or gas, bad debt, MGP remediation, smart grid infrastructure, and energy efficiency and demand response programs.

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In certain instances, the Utility Registrants could agree to negotiated settlements related to various rate matters, customer initiatives or franchise agreements.
These settlements are subject to regulatory approval.

The  Utility  Registrants  cannot  predict  the  ultimate  outcomes  of  any  settlements  or  the  actions  by  Illinois,  Pennsylvania,  Maryland,  the  District  of  Columbia,
Delaware, New Jersey or Federal regulators in establishing rates, including the extent, if any, to which certain costs such as significant capital projects will be
recovered or what rates of return will be allowed. Nevertheless, the expectation is that the Utility Registrants will continue to be obligated to deliver electricity to
customers in their respective service territories and will also retain significant default service obligations, referred to as POLR, DSP, SOS and BGS, to provide
electricity and natural gas to certain groups of customers in their respective service areas who do not choose an alternative supplier. The ultimate outcome and
timing of regulatory rate proceedings have a significant effect on the ability of the Utility Registrants, as applicable, to recover their costs or earn an adequate
return and could have a material adverse effect in the Utility Registrants' consolidated financial statements. See Note 4 — Regulatory Matters of the Combined
Notes to the Consolidated Financial Statements for additional information regarding rate proceedings.

Federal or additional  state RPS and/or energy conservation legislation,  along with  energy conservation by customers, could negatively
affect the consolidated financial statements of Generation and the Utility Registrants (All Registrants).

Changes  to  current  state  legislation  or  the  development  of  Federal  legislation  that  requires  the  use  of  clean,  renewable  and  alternate  fuel  sources  could
significantly  impact  Generation  and  the  Utility  Registrants,  especially  if  timely  cost  recovery  is  not  allowed  for  Utility  Registrants.  The  impact  could  include
increased costs and increased rates for customers.

Federal and state legislation mandating the implementation of energy conservation programs that require the implementation of new technologies, such as smart
meters  and  smart  grid,  have  increased  capital  expenditures  and  could  significantly  impact  the  Utility  Registrants  if  timely  cost  recovery  is  not  allowed.
Furthermore, regulated energy consumption reduction targets and declines in customer energy consumption resulting from the implementation of new energy
conservation  technologies  could  lead  to  a  decline  in  the  revenues  of  Exelon,  Generation  and  the  Utility  Registrants.  For  additional  information,  see  ITEM 1.
BUSINESS — Environmental Regulation — Renewable and Alternative Energy Portfolio Standards.

The impact of not meeting the criteria of the FASB guidance for accounting for the effects of certain types of regulation could be material
to Exelon and the Utility Registrants (Exelon and the Utility Registrants).

As of December 31, 2018 , Exelon and the Utility Registrants have concluded that the operations of the Utility Registrants meet the criteria of the authoritative
guidance for accounting for the effects of certain types of regulation. If it is concluded in a future period that a separable portion of their businesses no longer
meets the criteria, Exelon, and the Utility Registrants would be required to eliminate the financial statement effects of regulation for that part of their business.
That  action  would  include  the  elimination  of  any  or  all  regulatory  assets  and  liabilities  that  had  been  recorded  in  their  Consolidated  Balance  Sheets  and  the
recognition  of  a  one-time  charge  in  their  Consolidated  Statements  of  Operations  and  Comprehensive  Income.  The  impact  of  not  meeting  the  criteria  of  the
authoritative guidance could be material to the financial statements of Exelon and the Utility Registrants. The impacts and resolution of the above items could
lead to an impairment of ComEd's or PHI’s goodwill, which could be significant and at least partially offset the gains at ComEd discussed above. A significant
decrease in equity as a result of any changes could limit the ability of the Utility Registrants to pay dividends under Federal and state law and no longer meeting
the  regulatory  accounting  criteria  could  cause  significant  volatility  in  future  results  of  operations.  See  Note  1 — Significant  Accounting  Policies  ,  Note  4 —
Regulatory  Matters  and  Note  10  —  Intangible  Assets  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding
accounting for the effects of regulation, regulatory matters and ComEd’s and PHI's goodwill, respectively.

Exelon  and  Generation  could  incur  material  costs  of  compliance  if  Federal  and/or  state  regulation  or  legislation  is  adopted  to  address
climate change (Exelon and Generation).

Various  stakeholders,  including  legislators  and  regulators,  shareholders  and  non-governmental  organizations,  as  well  as  other  companies  in  many  business
sectors, including utilities, are considering ways to address the effect of GHG emissions on climate change. If carbon reduction regulation or legislation becomes
effective, Exelon and Generation could incur costs either to limit further the GHG emissions from their operations or to procure emission

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allowance credits. See ITEM 1. BUSINESS — Global Climate Change and Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated
Financial Statements for additional information regarding climate change.

The Registrants could be subject to higher costs and/or penalties related to mandatory reliability standards, including the likely exposure
of the Utility Registrants to the results of PJM’s RTEP and NERC compliance requirements (All Registrants).

As  a  result  of  the  Energy  Policy  Act  of  2005,  users,  owners  and  operators  of  the  bulk  power  transmission  system,  including  Generation  and  the  Utility
Registrants,  are  subject  to  mandatory  reliability  standards  promulgated  by  NERC  and  enforced  by  FERC.  As  operators  of  natural  gas  distribution  systems,
PECO, BGE and DPL are also subject to mandatory reliability standards of the U.S. Department of Transportation. The standards are based on the functions
that need to be performed to ensure the bulk power system operates reliably and are guided by reliability and market interface principles. Compliance with or
changes in the reliability standards could subject the Registrants to higher operating costs and/or increased capital expenditures. In addition, the ICC, PAPUC,
MDPSC,  DCPSC,  DPSC  and  NJBPU  impose  certain  distribution  reliability  standards  on  the  Utility  Registrants.  If  the  Registrants  were  found  not  to  be  in
compliance with the mandatory reliability standards, they could be subject to remediation costs as well as sanctions, which could include substantial monetary
penalties.

The  Utility  Registrants  as  transmission  owners  are  subject  to  NERC  compliance  requirements.  NERC  provides  guidance  to  transmission  owners  regarding
assessments  of  transmission  lines.  The  results  of  these  assessments  could  require  the  Utility  Registrants  to  incur  incremental  capital  or  operating  and
maintenance expenditures to ensure their transmission lines meet NERC standards.

See Note 4 — Regulatory Matters and Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional
information.

The  Registrants  could  be  subject  to  adverse  publicity  and  reputational  risks,  which  make  them  vulnerable  to  negative  customer
perception and could lead to increased regulatory oversight or other consequences (All Registrants).

The  Registrants  have  large  consumer  customer  bases  and  as  a  result  could  be  the  subject  of  public  criticism  focused  on  the  operability  of  their  assets  and
infrastructure and quality of their service. Adverse publicity of this nature could render legislatures and other governing bodies, public service commissions and
other  regulatory  authorities,  and  government  officials less  likely to view energy  companies  such as  Exelon and  its subsidiaries in a favorable  light, and  could
cause Exelon and its subsidiaries to be susceptible to less favorable legislative and regulatory outcomes, as well as increased regulatory oversight and more
stringent legislative or regulatory requirements (e.g. disallowances of costs, lower ROEs). The imposition of any of the foregoing could have a material negative
impact on the Registrants' business or consolidated financial statements.

The Registrants cannot predict the outcome of the legal proceedings relating to their business activities. An adverse determination could
negatively impact their consolidated financial statements (All Registrants).

The Registrants are involved in legal proceedings, claims and litigation arising out of their business operations, the most significant of which are summarized in
Note 22 — Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial  Statements.  Adverse  outcomes  in  these  proceedings  could
require significant expenditures, result in lost revenue or restrict existing business activities, any of which could have a material adverse effect in the Registrants’
consolidated financial statements.

Generation  could  be  negatively  affected  by  possible  Nuclear  Regulatory  Commission  actions  that  could  affect  the  operations  and
profitability of its nuclear generating fleet (Exelon and Generation).

Regulatory risk. A  change  in  the  Atomic  Energy  Act  or  the  applicable  regulations  or  licenses  could  require  a  substantial  increase  in  capital  expenditures  or
could result  in increased  operating  or decommissioning  costs  and  significantly affect  Generation’s  consolidated  financial  statements.  Events  at  nuclear  plants
owned by others, as well as those owned by Generation, could cause the NRC to initiate such actions.

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Spent nuclear fuel storage. The approval of a national repository for the storage of SNF, such as the one previously considered at Yucca Mountain, Nevada,
and  the  timing  of  such  facility opening,  will significantly  affect  the  costs  associated  with  storage  of  SNF,  and  the  ultimate  amounts  received  from  the  DOE  to
reimburse  Generation  for  these  costs.  The  NRC’s temporary  storage  rule  (also  referred  to  as  the  “waste  confidence  decision”)  recognizes  that  licensees  can
safely store SNF at nuclear power plants for up to 60 years beyond the original and renewed licensed operating life of the plants.

Any regulatory action relating to the timing and availability of a repository for SNF could adversely affect Generation’s ability to decommission fully its nuclear
units. Through May 15, 2014, in accordance with the NWPA and Generation’s contract with the DOE, Generation paid the DOE a fee per kWh of net nuclear
generation  for  the  cost  of  SNF  disposal.  This  fee  was  discontinued  effective  May  16,  2014.  Until  such  time  as  a  new  fee  structure  is  in  effect,  Exelon  and
Generation will not accrue any further costs related to SNF disposal fees. Generation cannot predict what, if any, fee will be established in the future for SNF
disposal.  However,  such  a  fee  could  be  material  to  Generation's  consolidated  financial  statements.  See  Note  22 — Commitments  and  Contingencies  of the
Combined Notes to Consolidated Financial Statements for additional information on the SNF obligation.

Operational Factors

The Registrants’ employees, contractors, customers and the general public could be exposed to a risk of injury due to the nature of the
energy industry (All Registrants).

Employees and contractors throughout the organization work in, and customers and the general public could be exposed to, potentially dangerous environments
near their operations. As a result, employees, contractors, customers and the general public are at some risk for serious injury, including loss of life. These risks
include nuclear accidents, dam failure, gas explosions, pole strikes and electric contact cases.

Natural  disasters,  war,  acts  and  threats  of  terrorism,  pandemic  and  other  significant  events  could  negatively  impact  the  Registrants'
results of operations, their ability to raise capital and their future growth (All Registrants).

Generation’s fleet of power plants and the Utility Registrants' distribution and transmission infrastructures could be affected by natural disasters, such as seismic
activity, fires resulting from natural causes such as lightning, extreme weather events, changes in temperature and precipitation patterns, changes to ground and
surface  water  availability,  sea  level  rise  and  other  related  phenomena.  Severe  weather  or  other  natural  disasters  could  be  destructive,  which  could  result  in
increased  costs,  including  supply  chain  costs.  An  extreme  weather  event  within  the  Registrants’  service  areas  can  also  directly  affect  their  capital  assets,
causing disruption in service to customers due to downed wires and poles or damage to other operating equipment.

Natural disasters and other significant events increase the risk to Generation  that the NRC or other regulatory or legislative bodies could change the laws or
regulations governing,  among other things, operations,  maintenance,  licensed lives, decommissioning,  SNF storage,  insurance, emergency  planning, security
and  environmental  and  radiological  matters.  In  addition,  natural  disasters  could  affect  the  availability  of  a  secure  and  economical  supply  of  water  in  some
locations, which is essential for Generation’s continued operation, particularly the cooling of generating units. Additionally, natural disasters and other events that
have an adverse effect on the economy in general could adversely affect the Registrants’ consolidated financial statements and their ability to raise capital.

The impact that potential terrorist attacks could have on the industry and on Exelon is uncertain. As owner-operators of infrastructure facilities, such as nuclear,
fossil and hydroelectric generation facilities and electric and gas transmission and distribution facilities, the Registrants face a risk that their operations would be
direct targets or indirect casualties of an act of terror. Any retaliatory military strikes or sustained military campaign could affect their operations in unpredictable
ways,  such  as  changes  in  insurance  markets  and  disruptions  of  fuel  supplies  and  markets,  particularly  oil.  Furthermore,  these  catastrophic  events  could
compromise the physical or cyber security of Exelon’s facilities, which could adversely affect Exelon’s ability to manage its business effectively. Instability in the
financial  markets  as  a  result  of  terrorism,  war,  natural  disasters,  pandemic,  credit  crises,  recession  or  other  factors  also  could  result  in  a  decline  in  energy
consumption or interruption of fuel or the supply chain, which could adversely affect the Registrants’ consolidated financial statements and their ability to raise
capital. In addition, the implementation of security guidelines and measures has resulted in and is expected to continue to result in increased costs.

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The Registrants could be significantly affected by the outbreak of a pandemic. Exelon has plans in place to respond to a pandemic. However, depending on the
severity of a pandemic and the resulting impacts to workforce and other resource availability, the ability to operate Exelon's generating and transmission and
distribution assets could be affected, resulting in decreased service levels and increased costs.

In  addition,  Exelon  maintains  a  level  of  insurance  coverage  consistent  with  industry  practices  against  property,  casualty  and  cybersecurity  losses  subject  to
unforeseen  occurrences  or  catastrophic  events  that  could  damage  or  destroy  assets  or  interrupt  operations.  However,  there  can  be  no  assurance  that  the
amount of insurance will be adequate to address such property and casualty losses.

Generation’s financial performance could be negatively affected by matters arising from its ownership and operation of nuclear facilities
(Exelon and Generation).

Nuclear capacity factors. Capacity factors for generating units, particularly capacity factors for nuclear generating units, significantly affect Generation’s results
of operations. Nuclear plant operations involve substantial fixed operating costs but produce electricity at low variable costs due to nuclear fuel costs typically
being  lower  than  fossil  fuel  costs.  Consequently,  to  be  successful,  Generation  must  consistently  operate  its  nuclear  facilities  at  high  capacity  factors.  Lower
capacity  factors  increase  Generation’s  operating  costs  by  requiring  Generation  to  produce  additional  energy  from  primarily  its  fossil  facilities  or  purchase
additional energy in the spot or forward markets in order to satisfy Generation’s obligations to committed third-party sales, including the Utility Registrants. These
sources generally have higher costs than Generation incurs to produce energy from its nuclear stations.

Nuclear refueling outages. In general, refueling outages are planned to occur once every 18 to 24 months. The total number of refueling outages, along with
their  duration,  could  have  a  significant  impact  on  Generation’s  results  of  operations.  When  refueling  outages  last  longer  than  anticipated  or  Generation
experiences unplanned outages, capacity factors decrease and Generation faces lower margins due to higher energy replacement costs and/or lower energy
sales and higher operating and maintenance costs.

Nuclear fuel quality. The  quality  of  nuclear  fuel  utilized  by  Generation  could  affect  the  efficiency  and  costs  of  Generation’s  operations.  Remediation  actions
could result in increased costs due to accelerated fuel amortization, increased outage costs and/or increased costs due to decreased generation capabilities.

Operational  risk.  Operations  at  any  of  Generation’s  nuclear  generation  plants  could  degrade  to  the  point  where  Generation  has  to  shutdown  the  plant  or
operate  at  less  than  full  capacity.  If  this  were  to  happen,  identifying  and  correcting  the  causes  could  require  significant  time  and  expense.  Generation  could
choose to close a plant rather than incur the expense of restarting it or returning the plant to full capacity. In either event, Generation could lose revenue and
incur increased fuel and purchased power expense to meet supply commitments. For plants operated but not wholly owned by Generation, Generation could
also incur liability to the co-owners. For nuclear plants not operated and not wholly owned by Generation, from which Generation receives a portion of the plants’
output, Generation’s results of operations are dependent on the operational performance of the operators and could be adversely affected by a significant event
at  those  plants.  Additionally,  poor  operating  performance  at  nuclear  plants  not  owned  by  Generation  could  result  in  increased  regulation  and  reduced  public
support for nuclear-fueled energy, which could significantly affect Generation’s consolidated financial statements. In addition, closure of generating plants owned
by others, or extended interruptions of generating plants or failure of transmission lines, could affect transmission systems that could adversely affect the sale
and delivery of electricity in markets served by Generation.

Nuclear  major  incident  risk.  Although  the  safety  record  of  nuclear  reactors  generally  has  been  very  good,  accidents  and  other  unforeseen  problems  have
occurred  both  in  the  United  States  and  abroad.  The  consequences  of  a  major  incident  could  be  severe  and  include  loss  of  life  and  property  damage.  Any
resulting liability from a nuclear plant major incident within the United States, owned or operated by Generation or owned by others, could exceed Generation’s
resources,  including  insurance  coverage.  Uninsured  losses  and  other  expenses,  to  the  extent  not  recovered  from  insurers  or  the  nuclear  industry,  could  be
borne by Generation  and could have a material adverse effect in Generation’s consolidated  financial statements. Additionally, an accident or other significant
event at a nuclear plant within the United States or abroad, whether owned Generation or others, could result in increased regulation and reduced public support
for nuclear-fueled energy and significantly adversely affect Generation’s consolidated financial statements.

Nuclear insurance. As required  by  the  Price-Anderson  Act,  Generation  carries  the  maximum  available  amount  of  nuclear  liability insurance,  $450 million for
each operating site. Claims exceeding that amount are covered through

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mandatory  participation  in  a  financial  protection  pool.  In  addition,  the  U.S.  Congress  could  impose  revenue-raising  measures  on  the  nuclear  industry  to  pay
claims exceeding the $14.1 billion limit for a single incident.

Generation is a member of an industry mutual insurance company, NEIL, which provides property and business interruption insurance for Generation’s nuclear
operations. In previous years, NEIL has made distributions to its members but Generation cannot predict the level of future distributions or if they will occur at all.
See Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional information of nuclear insurance.

Decommissioning  obligation  and  funding.  NRC  regulations  require  that  licensees  of  nuclear  generating  facilities  demonstrate  reasonable  assurance  that
funds will be available in certain minimum amounts at the end of the life of the facility to decommission the facility. Generation is required to provide to the NRC
a biennial report by unit (annually for units that have been retired and units that are within five years of retirement) addressing Generation’s ability to meet the
NRC-estimated funding levels including scheduled contributions to and earnings on the NDT funds. The NRC funding levels are based upon the assumption that
decommissioning will commence after the end of the current licensed life of each unit.

Generation  recognizes  as  a  liability  the  present  value  of  the  estimated  future  costs  to  decommission  its  nuclear  facilities.  The  estimated  liability  is  based  on
assumptions  in  the  approach  and  timing  of  decommissioning  the  nuclear  facilities,  estimation  of  decommissioning  costs  and  Federal  and  state  regulatory
requirements.  No  assurance  can  be  given  that  the  costs  of  such  decommissioning  will  not  substantially  exceed  such  liability,  as  facts,  circumstances  or  our
estimates may change, including changes in the approach and timing of decommissioning activities, changes in decommissioning costs, changes in Federal or
state  regulatory  requirements  on  the  decommissioning  of  such  facilities,  other  changes  in  our  estimates  or  Generation’s  ability  to  effectively  execute  on  its
planned decommissioning activities.

The performance of capital markets could significantly affect the value of the trust funds. Currently, Generation is making contributions to certain trust funds of
the  former  PECO  units  based  on  amounts  being  collected  by  PECO  from  its  customers  and  remitted  to  Generation.  While  Generation,  through  PECO,  has
recourse to collect additional amounts from PECO customers (subject to certain limitations and thresholds), it has no recourse to collect additional amounts from
utility customers for any of its other nuclear units if there is a shortfall of funds necessary for decommissioning. If circumstances changed such that Generation
would  be  unable  to  continue  to  make  contributions  to  the  trust  funds  of  the  former  PECO  units  based  on  amounts  collected  from  PECO  customers,  or  if
Generation no longer had recourse to collect additional amounts from PECO customers if there was a shortfall of funds for decommissioning, the adequacy of
the  trust  funds  related  to  the  former  PECO  units  could  be  negatively  affected  and  Exelon’s  and  Generation’s  consolidated  financial  statements  could  be
significantly affected. See Note 15 — Asset Retirement Obligations of the Combined Notes to Consolidated Financial Statements for additional information.

Forecasting trust fund investment earnings and costs to decommission nuclear generating stations requires significant judgment, and actual results could differ
significantly  from  current  estimates.  Ultimately,  if  the  investments  held  by  Generation’s  NDTs  are  not  sufficient  to  fund  the  decommissioning  of  Generation’s
nuclear  units,  Generation  could  be  required  to  take  steps,  such  as  providing  financial  guarantees  through  letters  of  credit  or  parent  company  guarantees  or
making  additional  contributions  to  the  trusts,  which  could  be  significant,  to  ensure  that  the  trusts  are  adequately  funded  and  that  current  and  future  NRC
minimum funding requirements are met. As a result, Generation’s consolidated financial statements could be significantly adversely affected. Additionally, if the
pledged  assets  are  not  sufficient  to  fund  the  Zion Station  decommissioning  activities  under  the  Asset  Sale  Agreement  (ASA),  Generation  could have  to  seek
remedies available under the ASA to reduce the risk of default by ZionSolutions and its parent. See Note 15 — Asset Retirement Obligations of the Combined
Notes to Consolidated Financial Statements for additional information.

For  nuclear  units  that  are  subject  to  regulatory  agreements  with  either  the  ICC  or  the  PAPUC,  decommissioning-related  activities  are  generally  offset  within
Exelon’s  and  Generation’s  Consolidated  Statements  of  Operations  and  Comprehensive  Income.  The  offset  of  decommissioning-related  activities  within  the
Consolidated  Statements  of  Operations  and  Comprehensive  Income  results  in  an  equal  adjustment  to  the  noncurrent  payables  to  affiliates  at  Generation.
ComEd and PECO have recorded an equal noncurrent affiliate receivable from Generation and a corresponding regulatory liability.

If  the  expected  value  in  the  NDT  funds  for  any  nuclear  unit  subject  to  the  regulatory  agreements  with  the  ICC  is  expected  to  not  exceed  the  total
decommissioning obligation for that unit, the accounting to offset decommissioning-

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related  activities  in  the  Consolidated  Statement  of  Operations  and  Comprehensive  Income  for  that  unit  would  be  discontinued,  the  decommissioning-related
activities would be recognized in the Consolidated Statements of Operations and Comprehensive Income and the adverse impact to Exelon’s and Generation’s
consolidated  financial  statements  could  be  material.  For  the  nuclear  units  subject  to  the  regulatory  agreements  with  the  PAPUC,  any  changes  to  the  PECO
regulatory  agreements  could  impact  Exelon’s  and  Generation’s  ability  to  offset  decommissioning-related  activities  within  the  Consolidated  Statement  of
Operations and Comprehensive Income, and the impact to Exelon’s and Generation’s consolidated financial statements could be material. If the accounting to
offset  decommissioning-related  activities  is  discontinued,  any  remaining  balances  in  noncurrent  payables  to  affiliates  at  Generation  and  ComEd's  or  PECO’s
noncurrent affiliate receivable from Generation and corresponding regulatory liability may need to be reversed and could have a material impact in Generation’s
Consolidated Statement of Operations and Comprehensive Income.

Generation’s  financial  performance  could  be  negatively  affected  by  risks  arising  from  its  ownership  and  operation  of  hydroelectric
facilities (Exelon and Generation).

FERC has the exclusive authority to license most non-Federal hydropower projects located on navigable waterways, Federal lands or connected to the interstate
electric grid. The license for the Muddy Run Pumped Storage Project expires on December 1, 2055. The license for the Conowingo Hydroelectric Project expired
on  September  1,  2014.  FERC  issued  an  annual  license,  effective  as  of  the  expiration  of  the  previous  license.  If  FERC  does  not  issue  a  license  prior  to  the
expiration of the annual license, the annual license renews automatically. Generation cannot predict whether it will receive all the regulatory approvals for the
renewed  licenses  of  its  hydroelectric  facilities.  If  FERC  does  not  issue  new  operating  licenses  for  Generation’s  hydroelectric  facilities  or  a  station  cannot  be
operated through the end of its operating license, Generation’s results of operations could be adversely affected by increased depreciation rates and accelerated
future decommissioning costs, since depreciation rates and decommissioning cost estimates currently include assumptions that license renewal will be received.
Generation  could  also  lose  revenue  and  incur  increased  fuel  and  purchased  power  expense  to  meet  supply  commitments.  In  addition,  conditions  could  be
imposed as part of the license renewal process that could adversely affect operations, could require a substantial increase in capital expenditures, could result in
increased operating costs or could render the project uneconomic and significantly affect Generation’s consolidated financial statements. Similar effects could
result from a change in the Federal Power Act or the applicable regulations due to events at hydroelectric facilities owned by others, as well as those owned by
Generation.

The Registrants’ businesses are capital intensive, and their assets could require significant expenditures to maintain and are subject to
operational failure, which could result in potential liability (All Registrants).

The Registrants’ businesses are capital intensive and require significant investments by Generation in electric generating facilities and by the Utility Registrants
in transmission and distribution infrastructure projects. These operational systems and infrastructure have been in service for many years. Equipment, even if
maintained in accordance with good utility practices, is subject to operational failure, including events that are beyond the Registrants’ control, and could require
significant expenditures to operate efficiently. The Registrants’ respective consolidated financial statements could be adversely affected if they were unable to
effectively  manage  their  capital  projects  or  raise  the  necessary  capital.  Furthermore,  operational  failure  of  electric  or  gas  systems,  generation  facilities  or
infrastructure  could  result  in  potential  liability  if  such  failure  results  in  damage  to  property  or  injury  to  individuals.  See  ITEM  1.  BUSINESS  for  additional
information regarding the Registrants’ potential future capital expenditures.

The Utility Registrants' operating costs, and customers’ and regulators’ opinions of the Utility Registrants are affected by their ability to
maintain the availability and reliability of their delivery and operational systems (Exelon and the Utility Registrants).

Failures of the equipment or facilities, including information systems, used in the Utility Registrants' delivery systems could interrupt the electric transmission and
electric and natural gas delivery, which could negatively impact related revenues, and increase maintenance and capital expenditures. Equipment or facilities
failures  can  be  due  to  a  number  of  factors,  including  natural  causes  such  as  weather  or  information  systems  failure.  Specifically,  if  the  implementation  of
advanced metering infrastructure, smart grid or other technologies in the Utility Registrants' service territory fail to perform as intended or are not successfully
integrated with billing and other information systems, the Utility Registrants' consolidated financial statements could be negatively impacted. Furthermore, if

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any of the financial, accounting, or other data processing systems fail or have other significant shortcomings, the Utility Registrants' financial results could be
negatively impacted. If an employee or third party causes the operational systems to fail, either as a result of inadvertent error or by deliberately tampering with
or  manipulating  the  operational  systems,  the  Utility  Registrants'  financial  results  could  also  be  negatively  impacted.  In  addition,  dependence  upon  automated
systems could further increase the risk that operational system flaws or internal and/or external tampering or manipulation of those systems will result in losses
that are difficult to detect.

The  aforementioned  failures  or  those  of  other  utilities,  including  prolonged  or  repeated  failures,  could  affect  customer  satisfaction  and  the  level  of  regulatory
oversight and the Utility Registrants' maintenance and capital expenditures. Regulated utilities, which are required to provide service to all customers within their
service territory, have generally been afforded liability protections against claims by customers relating to failure of service. Under Illinois law, however, ComEd
could  be  required  to  pay  damages  to  its  customers  in  some  circumstances  involving  extended  outages  affecting  large  numbers  of  its  customers,  and  those
damages could be material to ComEd’s consolidated financial statements.

The  Utility  Registrants'  respective  ability  to  deliver  electricity,  their  operating  costs  and  their  capital  expenditures  could  be  negatively
impacted by transmission congestion and failures of neighboring transmission systems (Exelon and the Utility Registrants).

Demand  for  electricity  within  the  Utility  Registrants'  service  areas  could  stress  available  transmission  capacity  requiring  alternative  routing  or  curtailment  of
electricity usage with consequent effects on operating costs, revenues and results of operations. Also, insufficient availability of electric supply to meet customer
demand could jeopardize the Utility Registrants' ability to comply with reliability standards and strain customer and regulatory agency relationships. As with all
utilities, potential concerns over transmission capacity or generation facility retirements could result in PJM or FERC requiring the Utility Registrants to upgrade
or expand their respective transmission systems through additional capital expenditures.

The  electricity  transmission  facilities  of  the  Utility  Registrants  are  interconnected  with  the  transmission  facilities  of  neighboring  utilities  and  are  part  of  the
interstate power transmission grid that is operated by PJM RTO. Although PJM’s systems and operations are designed to ensure the reliable operation of the
transmission grid and prevent the operations of one utility from having an adverse impact on the operations of the other utilities, there can be no assurance that
service interruptions at other utilities will not cause interruptions in the Utility Registrants’ service areas. If the Utility Registrants were to suffer such a service
interruption, it could have a negative impact in their and Exelon’s consolidated financial statements.

The Registrants are subject to physical security and cybersecurity risks (All Registrants).

The Registrants face physical security and cybersecurity risks as the owner-operators of generation, transmission and distribution facilities and as participants in
commodities trading. Threat sources continue to seek to exploit potential vulnerabilities in the electric and natural gas utility industry associated with protection of
sensitive  and  confidential  information,  grid  infrastructure  and  other  energy  infrastructures,  and  such  attacks  and  disruptions,  both  physical  and  cyber,  are
becoming increasingly sophisticated and dynamic. Continued implementation of advanced digital technologies increases the potentially unfavorable impacts of
such  attacks.  A  security  breach  of  the  physical  assets  or  information  systems  of  the  Registrants,  their  competitors,  vendors,  business  partners  and
interconnected entities in RTOs and ISOs, or regulators could impact the operation of the generation fleet and/or reliability of the transmission and distribution
system or result in the theft or inappropriate release of certain types of information, including critical infrastructure information, sensitive customer, vendor and
employee data, trading or other confidential data. The risk of these system-related events and security breaches occurring continues to intensify, and while the
Registrants  have  been,  and  will  likely  continue  to  be,  subjected  to  physical  and  cyber-attacks,  to  date  none  has  directly  experienced  a  material  breach  or
disruption to its network or information systems or our service operations. However, as such attacks continue to increase in sophistication and frequency, the
Registrants may be unable to prevent all such attacks in the future. If a significant breach were to occur, the reputation of Exelon or another Registrant and its
customer supply activities could be adversely affected, customer confidence in the Registrants or others in the industry could be diminished, or Exelon and its
subsidiaries could be subject to legal claims, loss of revenues, increased costs, operations shutdown, etc., any of which could contribute to the loss of customers
and have a negative impact on the business and/or consolidated financial statements. Moreover, the amount and scope of insurance maintained against losses
resulting from any such events or security breaches may not be sufficient to cover losses or otherwise adequately compensate for any disruptions to business
that could result. The Utility Registrants' deployment of smart meters throughout their service territories could increase the

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risk of damage from an intentional disruption of the system by third parties. In addition, new or updated security regulations or unforeseen threat sources could
require changes in current measures taken by the Registrants or their business operations and could adversely affect their consolidated financial statements.

Failure  to  attract  and  retain  an  appropriately  qualified  workforce  could  negatively  impact  the  Registrants’  consolidated  financial
statements (All Registrants).

Certain events, such as an employee strike, loss of contract resources due to a major event, and an aging workforce without appropriate replacements, could
lead  to operating  challenges  and  increased  costs  for  the  Registrants.  The  challenges  include lack of resources,  loss of knowledge  and  a  lengthy  time  period
associated with skill development. In this case, costs, including costs for contractors to replace employees, productivity costs and safety costs, could arise. The
Registrants are particularly affected due to the specialized knowledge required of the technical and support employees for their generation, transmission and
distribution operations. If the Registrants are unable to successfully attract and retain an appropriately qualified workforce, their consolidated financial statements
could be negatively impacted.

The Registrants could make investments in new business initiatives, including initiatives mandated by regulators, and markets that may
not be successful, and acquisitions could not achieve the intended financial results (All Registrants).

Generation could continue to pursue growth in its existing businesses and markets and further diversification across the competitive energy value chain. This
could include investment opportunities in renewables, development of natural gas generation, nuclear advisory or operating services for third parties, distributed
generation, potential expansion of the existing wholesale gas businesses and entry into liquefied natural gas. Such initiatives could involve significant risks and
uncertainties, including distraction of management from current operations, inadequate return on capital, and unidentified issues not discovered in the diligence
performed  prior  to  launching  an  initiative  or  entering  a  market.  As  these  markets  mature,  there  could  be  new  market  entrants  or  expansion  by  established
competitors that increase competition for customers and resources. Additionally, it is possible that FERC, state public utility commissions or others could impose
certain other restrictions on such transactions. All of these factors could result in higher costs or lower revenues than expected, resulting in lower than planned
returns on investment.

The  Utility  Registrants  face  risks  associated  with  their  regulatory-mandated  Smart  Grid  and  utility  of  the  future  initiatives  and  other  non-regulatory  mandated
initiatives. These risks include, but are not limited to, cost recovery, regulatory concerns, cybersecurity and obsolescence of technology. Due to these risks, no
assurance  can  be  given  that  such  initiatives  will  be  successful  and  will  not  have  a  material  adverse  effect  in  the  Utility  Registrants'  consolidated  financial
statements.

The  Registrants  may  not  realize  or  achieve  the  anticipated  cost  savings  through  the  cost  management  efforts  which  could  impact  the
Registrants’ results of operations (All Registrants).

The Registrants’ future financial performance and level of profitability is dependent, in part, on various cost reduction initiatives. The Registrants may encounter
challenges in executing these cost reduction initiatives and not achieve the intended cost savings.

ITEM 1B.

UNRESOLVED STAFF COMMENTS

All Registrants

None.

49

Table of Contents

ITEM 2.

PROPERTIES

Generation

The following table describes Generation’s interests in net electric generating capacity by station at December 31, 2018 :

Station (a)

Region

Location

No. of
Units

Percent
Owned (b)

Primary
Fuel Type

Primary
Dispatch
Type (c)

Net Generation
Capacity (MW) (d)

Braidwood

Byron

LaSalle

Dresden

Quad Cities

Clinton

Michigan Wind 2

Beebe

Michigan Wind 1

Harvest 2

Harvest

Beebe 1B

Ewington

Marshall

City Solar

Solar Ohio

Blue Breezes

CP Windfarm

Southeast Chicago

Clinton Battery Storage

Total Midwest

Limerick

Peach Bottom

Salem

Calvert Cliffs

Three Mile Island

Conowingo

Criterion

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Midwest

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Braidwood, IL

Byron, IL

Seneca, IL

Morris, IL

Cordova, IL

Clinton, IL

Sanilac Co., MI

Gratiot Co., MI

Huron Co., MI

Huron Co., MI

Huron Co., MI

Gratiot Co., MI

Jackson Co., MN

Lyon Co., MN

Chicago, IL

Toledo, OH

Faribault Co., MN

Faribault Co., MN

Chicago, IL

Blanchester, OH

2  

2  

2  

2  

2

1  

50

34

46

33

32

21

10

9

1  

2  

2  

2

8  

1  

75

51

51

51

51

51

51

99

99

51

Sanatoga, PA

2  

Delta, PA

Lower Alloways 
Creek Township, NJ

Lusby, MD

Middletown, PA

Darlington, MD

Oakland, MD

50

42.59

50.01

51

2

2

2

1  

11  

28

50

Uranium

Uranium

Uranium

Uranium

Uranium

Uranium

Wind

Wind

Wind

Wind

Wind

Wind

Wind

Wind

Solar

Solar

Wind

Wind

Gas

Energy Storage

Uranium

Uranium

Uranium

Uranium

Uranium

Hydroelectric

Wind

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Peaking

Peaking

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

2,386  

2,347  

2,320  

1,845  

1,403 (e)  
1,069  

46 (e)(g)  
42 (e)(h)  
35 (e)(g)  
30 (e)(g)  
27 (e)(g)  
26 (e)(g)  
20 (e)  
19 (e)  
9  

4  

3  

2 (e)(g)  

296 (k)  
10  

11,939  

2,317  

1,324 (e)  

1,002 (e)  

895 (e)(f)  

837 (j)  
572  

36 (e)(g)  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Station (a)

Region

Location

No. of
Units

Percent
Owned (b)

Primary
Fuel Type

Primary
Dispatch
Type (c)

Net Generation
Capacity (MW) (d)

Fair Wind

Solar Maryland MC

Fourmile

Solar New Jersey 1

Solar New Jersey 2

Solar Horizons

Solar Maryland

Solar Maryland 2

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Garrett County, MD

Various, MD

Garrett County, MD

Various, NJ

Various, NJ

Emmitsburg, MD

12  

40  

16

5  

2  

1

Various, MD

11  

Various, MD

Constellation New Energy

Mid-Atlantic

Gaithersburg, MD

Solar Federal

Solar New Jersey 3

Solar DC

Muddy Run

Eddystone 3, 4

Perryman

Croydon

Handsome Lake

Notch Cliff

Westport

Richmond

Gould Street

Philadelphia Road

Eddystone

Fairless Hills

Delaware

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Trenton, NJ

Middle Township, NJ

District of Columbia

Drumore, PA

Eddystone, PA

Aberdeen, MD

West Bristol, PA

Kennerdell, PA

Baltimore, MD

Baltimore, MD

Philadelphia, PA

Baltimore, MD

Baltimore, MD

Eddystone, PA

Fairless Hills, PA

Philadelphia, PA

3  

1  

1  

5

1  

8  

2  

5  

8  

5  

8  

1  

2  

1  

4  

4  

2  

4  

51

51

51

51

Wind

Solar

Wind

Solar

Solar

Solar

Solar

Solar

Solar

Solar

Solar

Solar

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

30  

36  

20 (e)(g)  
18  

11  

8 (e)(g)  
8  

8  

5  

5  

1 (e)(g)  
1  

Hydroelectric

Intermediate

1,070  

Oil/Gas

Oil/Gas

Oil

Gas

Gas

Gas

Oil

Gas

Oil

Oil

Landfill Gas

Oil

Intermediate

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

760  

404  

391  

268  

117 (k)  

116 (k)  
98  

97 (k)  
61  

60  

60 (k)  
56  

 
Table of Contents

Station (a)

Region

Location

No. of
Units

Percent
Owned (b)

Primary
Fuel Type

Primary
Dispatch
Type (c)

Net Generation
Capacity (MW) (d)

Southwark

Falls

Moser

Riverside

Chester

Schuylkill

Salem

Pennsbury

Bethlehem

Eastern

Total Mid-Atlantic

Whitetail

Sendero

Constellation Solar Texas

Colorado Bend II

Wolf Hollow II

Handley 3

Handley 4, 5

Total ERCOT

Solar 
Massachusetts

Holyoke Solar

Solar Net Metering

Solar Connecticut

Mystic 8, 9

Mystic 7

Wyman

West Medway

Mid-Atlantic

Mid-Atlantic

Philadelphia, PA

Morrisville, PA

Mid-Atlantic Lower PottsgroveTwp., PA

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Mid-Atlantic

Baltimore, MD

Chester, PA

Philadelphia, PA

Lower Alloways 
Creek Township, NJ

Morrisville, PA

Bethlehem, PA

Bethlehem, PA

ERCOT

Webb County, TX

Jim Hogg and Zapata
County, TX

4  

3  

3  

2  

3  

2  

1

2  

1  

3  

42.59

57

39

51

51

ERCOT

Other

ERCOT

ERCOT

ERCOT

ERCOT

New England

New England

New England

New England

New England

New England

New England

New England

Various, TX

11  

Wharton, TX

Granbury, TX

Fort Worth, TX

Fort Worth, TX

3  

3  

1  

2  

Various, MA

10  

Various, MA

Uxbridge, MA

Various, CT

Charlestown, MA

Charlestown, MA

Yarmouth, ME

West Medway, MA

2  

1  

1  

6  

1  

1

3  

52

5.9

Oil

Oil

Oil

Oil

Oil

Oil

Oil

Landfill Gas

Landfill Gas

Landfill Gas

Wind

Wind

Solar

Gas

Gas

Gas

Gas

Solar

Solar

Solar

Solar

Gas

Oil/Gas

Oil

Oil

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

Peaking

52  

51  

51  

39 (k)(l)  
39  

30  

16 (e)  

4 (e)  

4 (k)  

4 (k)  

10,982  

Base-load

46 (e)(g)  

Base-load

Base-load

Intermediate

Intermediate

Intermediate

Peaking

Base-load

Base-load

Base-load

Base-load

Intermediate

Intermediate

Intermediate

Peaking

40 (e)(g)  
13  

1,088  

1,064  

395  

870  

3,516  

7  

5  

2  

1  

1,417  

573 (m)  
35 (e)  

123  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Station (a)

Region

Location

No. of
Units

Percent
Owned (b)

Primary
Fuel Type

Primary
Dispatch
Type (c)

Net Generation
Capacity (MW) (d)

Framingham

Mystic Jet

Total New England

Nine Mile Point

FitzPatrick

Ginna

Solar New York

Total New York

Antelope Valley

Bluestem

Exelon Wind 4

Shooting Star

Albany Green Energy

Solar Arizona

Bluegrass Ridge

California PV Energy 2

Conception

Cow Branch

Solar Arizona 2

California PV Energy

Mountain Home

High Mesa

Echo 1

Sacramento PV Energy

Cassia

Wildcat

Echo 2

Exelon Wind 5

Exelon Wind 6

Exelon Wind 7

Exelon Wind 8

Exelon Wind 9

Exelon Wind 10

Exelon Wind 11

New England

New England

Framingham, MA

Charlestown, MA

New York

New York

New York

New York

Scriba, NY

Scriba, NY

Ontario, NY

Bethlehem, NY

3  

1  

2

1  

1

1  

1  

60

38  

65

1

Lancaster, CA

Beaver County, OK

Gruver, TX

Kiowa County, KS

Albany, GA

Various, AZ

127  

King City, MO

Various, CA

Barnard, MO

Rock Port, MO

Various, AZ

Various, CA

Glenns Ferry, ID

Elmore Co., ID

Echo, OR

Sacramento, CA

Buhl, ID

Lovington, NM

Echo, OR

Texhoma, TX

Texhoma, TX

Sunray, TX

Sunray, TX

Sunray, TX

Dumas, TX

Dumas, TX

27

89  

24

24

25  

53  

20

19

21

4

14

13

10

8  

8  

8  

8  

8  

8  

8  

53

50.01

50.01

51

51

99

51

51

51

51

51

50.49

51

51

51

51

Oil

Oil

Peaking

Peaking

Uranium

Uranium

Uranium

Solar

Solar

Wind

Wind

Wind

Biomass

Solar

Wind

Solar

Wind

Wind

Solar

Solar

Wind

Wind

Wind

Solar

Wind

Wind

Wind

Wind

Wind

Wind

Wind

Wind

Wind

Wind

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

31  

9 (m)  

2,203  

838 (e)(f)  
842  

288 (e)(f)  
3  

1,971  

242  

101 (e)(g)(h)  

80  

53 (e)(g)  
52 (i)  
46  

29 (e)(g)  
27  

26 (e)(g)  
26 (e)(g)  
23  

21  

21 (e)(g)  
20 (e)(g)  
17 (e)(g)  
15 (e)(g)  
15 (e)(g)  
14 (e)(g)  
10 (e)(g)  
10  

10  

10  

10  

10  

10  

10  

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Station (a)

Region

Location

No. of
Units

Percent
Owned (b)

Primary
Fuel Type

Primary
Dispatch
Type (c)

Net Generation
Capacity (MW) (d)

High Plains

Solar Georgia 2

Tuana Springs

Solar Georgia

Greensburg

Outback Solar

Echo 3

Three Mile Canyon

Loess Hills

California PV Energy 3

Mohave Sunrise Solar

Denver Airport 
Solar

Hillabee

Grande Prairie

SEGS 4, 5, 6

Total Other

Total

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Other

Panhandle, TX

Various, GA

Hagerman, ID

Various, GA

Greensburg, KS

Christmas Valley, OR

Echo, OR

Boardman, OR

Rock Port, MO

Various, CA

Fort Mohave, AZ

Denver, CO

Alexander City, AL

Alberta, Canada

99.5

51

51

50.49

51

51

8

8  

8

10  

10

1  

6

6

4  

10  

1  

1

3  

1  

Boron, CA

3

4.2-12.2

Wind

Solar

Wind

Solar

Wind

Solar

Wind

Wind

Wind

Solar

Solar

Solar

Gas

Gas

Solar

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Base-load

Intermediate

Peaking

Peaking

10 (e)  
10  

9 (e)(g)  
8  

7 (e)(g)  
6  

5 (e)(g)  
5 (e)(g)  
5  

5  

5  

2 (e)(g)  

753  

105  

9 (e)  

1,852  

32,463  

__________
(a) All nuclear stations are boiling water reactors except Braidwood, Byron, Calvert Cliffs, Ginna, Salem and Three Mile Island, which are pressurized water reactors.
(b) 100%, unless otherwise indicated.
(c) Base-load units are plants that normally operate to take all or part of the minimum continuous load of a system and, consequently, produce electricity at an essentially
constant rate. Intermediate units are plants that normally operate to take load of a system during the daytime higher load hours and, consequently, produce electricity by
cycling on and off daily. Peaking units consist of lower-efficiency, quick response steam units, gas turbines and diesels normally used during the maximum load periods.

(d) For nuclear stations, capacity reflects the annual mean rating. Fossil stations reflect a summer rating. Wind and solar facilities reflect name plate capacity.
(e) Net generation capacity is stated at proportionate ownership share.
(f) Reflects Generation’s 50.01% interest in CENG, a joint venture with EDF. For Nine Mile Point, the co-owner owns 18% of Unit 2. Thus, Exelon’s ownership is 50.01% of

82% of Nine Mile Point Unit 2.

(g) Reflects the sale of 49% of EGRP to a third party on July 6, 2017. See Note 2 — Variable Interest Entities of the Combined Notes to Consolidated Financial Statements

for additional information.

(h) EGRP owns 100% of the Class A membership interests and a tax equity investor owns 100% of the Class B membership interests of the entity that owns the Bluestem

generating assets.

(i) Generation directly owns a 50% interest in the Albany Green Energy station and an additional 49% through the consolidation of a Variable Interest Entity.
(j) Generation  has  announced  it  will  permanently  cease  generation  operations  at  TMI  on  or  about  September  30,  2019.  See  Note  8 — Early  Plant  Retirements  of the

Combined Notes to Consolidated Financial Statements for additional information.

(k) Generation has agreed to retire and cease generation operations at the Gould Street, Fairless Hills, Eastern, Bethlehem, Southeast Chicago, Notch Cliff, Riverside (unit

8), Westport and Pennsbury units on or before June 1, 2020.

(l) Generation plans to retire and cease generation operation at Riverside (unit 7) on or about March 14, 2019.
(m) Generation plans to retire and cease generation operation at the Mystic 7 and Mystic Jet units on or about June 1, 2022.

The net generation capability available for operation at any time may be less due to regulatory restrictions, transmission congestion, fuel restrictions, efficiency of
cooling  facilities,  level  of  water  supplies  or  generating  units  being  temporarily  out  of  service  for  inspection,  maintenance,  refueling,  repairs  or  modifications
required by regulatory authorities.

54

 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Generation maintains property insurance against loss or damage to its principal plants and properties by fire or other perils, subject to certain exceptions. For
additional information regarding nuclear insurance of generating facilities, see ITEM 1. BUSINESS — Exelon Generation Company, LLC . For its insured losses,
Generation is self-insured to the extent that any losses are within the policy deductible or exceed the amount of insurance maintained. Any such losses could
have a material adverse effect in Generation’s consolidated financial condition or results of operations.

ComEd

ComEd’s  electric  substations  and  a  portion  of  its  transmission  rights  of  way  are  located  on  property  that  ComEd  owns.  A  significant  portion  of  its  electric
transmission and distribution facilities is located above or underneath highways, streets, other public places or property that others own. ComEd believes that it
has satisfactory rights to use those places or property in the form of permits, grants, easements, licenses and franchise rights; however, it has not necessarily
undertaken to examine the underlying title to the land upon which the rights rest.

Transmission and Distribution

ComEd’s high voltage electric transmission lines owned and in service at December 31, 2018 were as follows:

Voltage (Volts)

765,000

345,000

138,000

Circuit Miles

90

2,716

2,209

ComEd’s electric distribution system includes 35,398 circuit miles of overhead lines and 32,010 circuit miles of underground lines.

First Mortgage and Insurance

The principal properties of ComEd are subject to the lien of ComEd’s Mortgage dated July 1, 1923, as amended and supplemented, under which ComEd’s First
Mortgage Bonds are issued.

ComEd maintains property insurance against loss or damage to its properties by fire or other perils, subject to certain exceptions. For its insured losses, ComEd
is  self-insured  to  the  extent  that  any  losses  are  within  the  policy  deductible  or  exceed  the  amount  of  insurance  maintained.  Any  such  losses  could  have  a
material adverse effect in the consolidated financial condition or results of operations of ComEd.

PECO

PECO’s  electric  substations  and  a  significant  portion  of  its  transmission  lines  are  located  on  property  that  PECO  owns.  A  significant  portion  of  its  electric
transmission and distribution facilities is located above or underneath highways, streets, other public places or property that others own. PECO believes that it
has  satisfactory  rights  to  use  those  places  or  property  in  the  form  of  permits,  grants,  easements  and  licenses;  however,  it has  not  necessarily  undertaken  to
examine the underlying title to the land upon which the rights rest.

55

 
 
 
 
Table of Contents

Transmission and Distribution

PECO’s high voltage electric transmission lines owned and in service at December 31, 2018 were as follows:

Voltage (Volts)

500,000

230,000

138,000

69,000

Circuit Miles

188

549

135

181

(a)  

__________
(a)

In addition, PECO has a 22.00% ownership interest in 127 miles of 500 kV lines located in Pennsylvania and a 42.55% ownership interest in 131 miles of 500 kV lines
located in Delaware and New Jersey.

PECO’s electric distribution system includes 12,957 circuit miles of overhead lines and 9,367 circuit miles of underground lines.

Gas

The following table sets forth PECO’s natural gas pipeline miles at December 31, 2018 :

Transmission

Distribution

Service piping

Total

Pipeline Miles

9

6,912

6,377

13,298

PECO has an LNG facility located in West Conshohocken, Pennsylvania that has a storage capacity of 1,200 mmcf and a send-out capacity of 160 mmcf/day
and a propane-air plant located in Chester, Pennsylvania, with a tank storage capacity of 105 mmcf and a peaking capability of 25 mmcf/day. In addition, PECO
owns 30 natural gas city gate stations and direct pipeline customer delivery points at various locations throughout its gas service territory.

First Mortgage and Insurance

The principal properties of PECO are subject to the lien of PECO’s Mortgage dated May 1, 1923, as amended and supplemented, under which PECO’s first and
refunding mortgage bonds are issued.

PECO maintains property insurance against loss or damage to its properties by fire or other perils, subject to certain exceptions. For its insured losses, PECO is
self-insured to the extent that any losses are within the policy deductible or exceed the amount of insurance maintained. Any such losses could have a material
adverse effect in the consolidated financial condition or results of operations of PECO.

BGE

BGE’s  electric  substations  and  a  significant  portion  of  its  transmission  lines  are  located  on  property  that  BGE  owns.  A  significant  portion  of  its  electric
transmission and distribution facilities is located above or underneath highways, streets, other public places or property that others own. BGE believes that it has
satisfactory rights to use those places or property in the form of permits, grants, easements and licenses; however, it has not necessarily undertaken to examine
the underlying title to the land upon which the rights rest.

56

 
 
 
 
 
 
 
 
 
 
Table of Contents

Transmission and Distribution

BGE’s high voltage electric transmission lines owned and in service at December 31, 2018 were as follows:

Voltage (Volts)

500,000

230,000

138,000

115,000

Circuit Miles

218

358

55

706

BGE’s electric distribution system includes 9,191 circuit miles of overhead lines and 17,295 circuit miles of underground lines.

Gas

The following table sets forth BGE’s natural gas pipeline miles at December 31, 2018 :

Transmission

Distribution

Service piping

Total

Pipeline Miles

161

7,348

6,305

13,814

BGE has an LNG facility located in Baltimore, Maryland that has a storage capacity of 1,056 mmcf and a send-out capacity of 332 mmcf/day and a propane-air
plant located in Baltimore, Maryland, with a storage capacity of 550 mmcf and a send-out capacity of 85 mmcf/day. In addition, BGE owns 12 natural gas city
gate stations and 20 direct pipeline customer delivery points at various locations throughout its gas service territory.

Property Insurance

BGE owns its principal headquarters building located in downtown Baltimore. BGE maintains property insurance against loss or damage to its properties by fire
or other perils, subject to certain exceptions. For its insured losses, BGE is self-insured to the extent that any losses are within the policy deductible or exceed
the  amount  of  insurance  maintained.  Any  such  losses  could  have  a  material  adverse  effect  in  the  consolidated  financial  condition  or  results  of  operations  of
BGE.

Pepco

Pepco’s  electric  substations  and  a  significant  portion  of  its  transmission  lines  are  located  on  property  that  Pepco  owns.  A  significant  portion  of  its  electric
transmission and distribution facilities is located above or underneath highways, streets, other public places or property that others own. Pepco believes that it
has  satisfactory  rights  to  use  those  places  or  property  in  the  form  of  permits,  grants,  easements  and  licenses;  however,  it has  not  necessarily  undertaken  to
examine the underlying title to the land upon which the rights rest.

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Transmission and Distribution

Pepco’s high voltage electric transmission lines owned and in service at December 31, 2018 were as follows:

Voltage (Volts)

500,000

230,000

138,000

115,000

Circuit Miles

142

767

61

38

Pepco’s  electric  distribution  system  includes  approximately  4,127  circuit  miles  of  overhead  lines  and  7,039  circuit  miles  of  underground  lines.  Pepco  also
operates  a  distribution  system  control  center  in  Bethesda,  Maryland.  The  computer  equipment  and  systems  contained  in Pepco’s  control  center  are  financed
through a sale and leaseback transaction.

First Mortgage and Insurance

The  principal  properties  of  Pepco  are  subject  to  the  lien  of  Pepco’s  mortgage  dated  July  1,  1935,  as  amended  and  supplemented,  under  which  Pepco  First
Mortgage Bonds are issued.

Pepco maintains property insurance against loss or damage to its properties by fire or other perils, subject to certain exceptions. For its insured losses, Pepco is
self-insured to the extent that any losses are within the policy deductible or exceed the amount of insurance maintained. Any such losses could have a material
adverse effect in the consolidated financial condition or results of operations of Pepco.

DPL

DPL’s  electric  substations  and  a  significant  portion  of  its  transmission  lines  are  located  on  property  that  DPL  owns.  A  significant  portion  of  its  electric
transmission and distribution facilities is located above or underneath highways, streets, other public places or property that others own. DPL believes that it has
satisfactory rights to use those places or property in the form of permits, grants, easements and licenses; however, it has not necessarily undertaken to examine
the underlying title to the land upon which the rights rest.

Transmission and Distribution

DPL’s high voltage electric transmission lines owned and in service at December 31, 2018 were as follows:

Voltage (Volts)

500,000

230,000

138,000

69,000

Circuit Miles

16

471

586

569

DPL’s electric distribution system includes approximately 6,031 circuit miles of overhead lines and 6,298 circuit miles of underground lines. DPL also owns and
operates a distribution system control center in New Castle, Delaware.

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Gas

The following table sets forth DPL’s natural gas pipeline miles at December 31, 2018 :

Transmission (a)

Distribution

Service piping

Total

Pipeline Miles

8

2,065

1,398

3,471

___________
(a) DPL has a 10% undivided interest in approximately 8 miles of natural gas transmission mains located in Delaware which are used by DPL for its natural gas operations

and by 90% owner for distribution of natural gas to its electric generating facilities.

DPL  owns  a  liquefied  natural  gas  facility  located  in  Wilmington,  Delaware,  with  a  storage  capacity  of  approximately  250 mmcf  and  an  emergency  sendout
capability of 36 mmcf/day. DPL owns 4 natural gas city gate stations at various locations in New Castle County, Delaware. These stations have a total primary
delivery point contractual entitlement of 158 mmcf/day.

First Mortgage and Insurance

The  principal  properties  of  DPL  are  subject  to  the  lien  of  DPL’s  mortgage  dated  October  1,  1947,  as  amended  and  supplemented,  under  which  DPL  First
Mortgage Bonds are issued.

DPL maintains property insurance against loss or damage to its properties by fire or other perils, subject to certain exceptions. For its insured losses, DPL is self-
insured  to  the  extent  that  any  losses  are  within  the  policy  deductible  or  exceed  the  amount  of  insurance  maintained.  Any  such  losses  could  have  a  material
adverse effect in the consolidated financial condition or results of operations of DPL.

ACE

ACE’s  electric  substations  and  a  significant  portion  of  its  transmission  lines  are  located  on  property  that  ACE  owns.  A  significant  portion  of  its  electric
transmission and distribution facilities is located above or underneath highways, streets, other public places or property that others own. ACE believes that it has
satisfactory rights to use those places or property in the form of permits, grants, easements and licenses; however, it has not necessarily undertaken to examine
the underlying title to the land upon which the rights rest.

Transmission and Distribution

ACE’s high voltage electric transmission lines owned and in service at December 31, 2018 were as follows:

Voltage (Volts)

500,000

230,000

138,000

69,000

Circuit Miles

—

221

239

663

ACE’s electric distribution system includes approximately 7,378 circuit miles of overhead lines and 2,927 circuit miles of underground lines. ACE also owns and
operates a distribution system control center in Mays Landing, New Jersey.

First Mortgage and Insurance

The  principal  properties  of  ACE  are  subject  to  the  lien  of  ACE’s  mortgage  dated  January  15,  1937,  as  amended  and  supplemented,  under  which  ACE  First
Mortgage Bonds are issued.

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ACE maintains property insurance against loss or damage to its properties by fire or other perils, subject to certain exceptions. For its insured losses, ACE is
self-insured to the extent that any losses are within the policy deductible or exceed the amount of insurance maintained. Any such losses could have a material
adverse effect in the consolidated financial condition or results of operations of ACE.

Exelon

Security Measures

The Registrants have initiated and work to maintain security measures. On a continuing basis, the Registrants evaluate enhanced security measures at certain
critical locations, enhanced response and recovery plans, long-term design changes and redundancy measures. Additionally, the energy industry has strategic
relationships  with  governmental  authorities  to  ensure  that  emergency  plans  are  in  place  and  critical  infrastructure  vulnerabilities  are  addressed  in  order  to
maintain the reliability of the country’s energy systems.

ITEM 3.

LEGAL PROCEEDINGS

All Registrants

The  Registrants  are  parties  to  various  lawsuits  and  regulatory  proceedings  in  the  ordinary  course  of  their  respective  businesses.  For  information  regarding
material lawsuits and proceedings, see Note  4 — Regulatory Matters and Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated
Financial Statements. Such descriptions are incorporated herein by these references.

ITEM 4.

MINE SAFETY DISCLOSURES

All Registrants

Not Applicable to the Registrants.

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PART II

(Dollars in millions except per share data, unless otherwise noted)

ITEM 5.

MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF
EQUITY SECURITIES

Exelon

Exelon’s common stock is listed on the New York Stock Exchange (trading symbol: EXC). As of January 31, 2019 , there were 969,745,933 shares of common
stock outstanding and approximately 99,857 record holders of common stock.

Stock Performance Graph

The performance graph below illustrates a five-year comparison of cumulative total returns based on an initial investment of $100 in Exelon common stock, as
compared with the S&P 500 Stock Index and the S&P Utility Index, for the period 2014 through 2018 .

This performance chart assumes:

•

•

$100 invested on December 31, 2013 in Exelon common stock, in the S&P 500 Stock Index and in the S&P Utility Index; and

All dividends are reinvested.

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Table of Contents

Value of Investment at December 31,

2013

$100

$100

$100

2014

$140.61

$113.68

$128.98

2015

$109.44

$115.24

$122.73

2016

$145.34

$129.02

$142.72

2017

$167.22

$157.17

$160.00

2018

$197.86

$150.27

$166.57

Exelon Corporation

S&P 500

S&P Utilities

Generation

As of January 31, 2019 , Exelon indirectly held the entire membership interest in Generation.

ComEd

As  of  January  31,  2019  ,  there  were  127,021,331  outstanding  shares  of  common  stock,  $12.50  par  value,  of  ComEd,  of  which  127,002,904  shares  were
indirectly held by Exelon. At January 31, 2019 , in addition to Exelon, there were 294 record holders of ComEd common stock. There is no established market
for shares of the common stock of ComEd.

PECO

As of January 31, 2019 , there were 170,478,507 outstanding shares of common stock, without par value, of PECO, all of which were indirectly held by Exelon.

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BGE

As of January 31, 2019 , there were 1,000 outstanding shares of common stock, without par value, of BGE, all of which were indirectly held by Exelon.

PHI

As of January 31, 2019 , Exelon indirectly held the entire membership interest in PHI.

Pepco

As of January 31, 2019 , there were 100 outstanding shares of common stock, $0.01 par value, of Pepco, all of which were indirectly held by Exelon.

DPL

As of January 31, 2019 , there were 1,000 outstanding shares of common stock, $2.25 par value, of DPL, all of which were indirectly held by Exelon.

ACE

As of January 31, 2019 , there were 8,546,017 outstanding shares of common stock, $3.00 par value, of ACE, all of which were indirectly held by Exelon.

All Registrants

Dividends

Under  applicable  Federal  law,  Generation,  ComEd,  PECO,  BGE,  PHI,  Pepco,  DPL  and  ACE  can  pay  dividends  only  from  retained,  undistributed  or  current
earnings. A significant loss recorded at Generation, ComEd, PECO, BGE, PHI, Pepco, DPL or ACE may limit the dividends that these companies can distribute
to Exelon.

ComEd has agreed in connection with a financing arranged through ComEd Financing III that ComEd will not declare dividends on any shares of its capital stock
in the event that: (1) it exercises its right to extend the interest payment periods on the subordinated debt securities issued to ComEd Financing III; (2) it defaults
on its guarantee of the payment of distributions on the preferred trust securities of ComEd Financing III; or (3) an event of default occurs under the Indenture
under which the subordinated debt securities are issued. No such event has occurred.

PECO has agreed in connection with financings arranged through PEC L.P. and PECO Trust IV that PECO will not declare dividends on any shares of its capital
stock in the event that: (1) it exercises its right to extend the interest payment periods on the subordinated debentures which were issued to PEC L.P. or PECO
Trust IV; (2) it defaults on its guarantee of the payment of distributions on the Series D Preferred Securities of PEC L.P. or the preferred trust securities of PECO
Trust IV; or (3) an event of default occurs under the Indenture under which the subordinated debentures are issued. No such event has occurred.

BGE is subject to restrictions established by the MDPSC that prohibit BGE from paying a dividend on its common shares if (a) after the dividend payment, BGE’s
equity ratio would be below 48% as calculated pursuant to the MDPSC’s ratemaking precedents or (b) BGE’s senior unsecured credit rating is rated by two of
the three major credit rating agencies below investment grade. No such event has occurred.

Pepco is subject to certain dividend restrictions established by settlements approved in Maryland and the District of Columbia. Pepco is prohibited from paying a
dividend  on  its  common  shares  if  (a)  after  the  dividend  payment,  Pepco's  equity  ratio  would  be  48%  as  equity  levels  are  calculated  under  the  ratemaking
precedents of the MDPSC and DCPSC or (b) Pepco’s senior unsecured credit rating is rated by one of the three major credit rating agencies below investment
grade. No such event has occurred.

DPL is subject to certain dividend restrictions established by settlements approved in Delaware and Maryland. DPL is prohibited from paying a dividend on its
common shares if (a) after the dividend payment, DPL's equity ratio would be 48% as equity levels are calculated under the ratemaking precedents of the DPSC
and MDPSC or (b) DPL’s

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senior unsecured credit rating is rated by one of the three major credit rating agencies below investment grade. No such event has occurred.

ACE  is  subject  to  certain  dividend  restrictions  established  by  settlements  approved  in  New  Jersey.  ACE  is  prohibited  from  paying  a  dividend  on  its  common
shares  if  (a)  after  the  dividend  payment,  ACE's  equity  ratio  would  be  48%  as  equity  levels  are  calculated  under  the  ratemaking  precedents  of  the  NJBPU  or
(b)  ACE's  senior  unsecured  credit  rating  is  rated  by  one  of  the  three  major  credit  rating  agencies  below  investment  grade.  ACE  is  also  subject  to  a  dividend
restriction  which  requires  ACE  to  obtain  the  prior  approval  of  the  NJBPU  before  dividends  can  be  paid  if  its  equity  as  a  percent  of  its  total  capitalization,
excluding securitization debt, falls below 30%. No such events have occurred.

Exelon’s Board of Directors approved an updated dividend policy providing an increase of 5% each year for the period covering 2018 through 2020, beginning
with the March 2018 dividend.

At December 31, 2018 , Exelon had retained earnings of $14,766 million , including Generation’s undistributed earnings of $3,724 million , ComEd’s retained
earnings of $1,337 million consisting of retained earnings appropriated for future dividends of $2,976 million , partially offset by $1,639 million of unappropriated
accumulated deficits, PECO’s retained earnings of $1,242 million , BGE’s retained earnings of $1,640 million , and PHI's undistributed earnings of $62 million .

The following table sets forth Exelon’s quarterly cash dividends per share paid during 2018 and 2017 :

(per share)
Exelon

Fourth
Quarter

Third
Quarter

Second
Quarter

First
Quarter

Fourth
Quarter

Third
Quarter

Second
Quarter

First
Quarter

0.345  

0.345  

0.345  

0.345  

0.328  

0.328  

0.328  

0.328

2018

2017

The  following  table  sets  forth  Generation's  and  PHI's  quarterly  distributions  and  ComEd’s,  PECO’s,  BGE's,  Pepco's,  DPL's  and  ACE's  quarterly  common
dividend payments:

(in millions)
Generation

$

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

4th
Quarter

3rd
Quarter

2nd
Quarter

1st
Quarter

4th
Quarter

3rd
Quarter

2nd
Quarter

1st
Quarter

2018

2017

313   $

114  

6  

52  

94  

41  

38  

13  

311   $

116  

7  

52  

123  

78  

18  

27  

189   $

115  

6  

53  

38  

25  

4  

10  

188   $

114  

287  

52  

71  

25  

36  

9  

165   $

106  

72  

50  

44  

—  

30  

15  

164   $

105  

72  

49  

136  

75  

28  

31  

166   $

106  

72  

50  

62  

28  

24  

12  

164

105

72

49

69

30

30

10

First Quarter 2019 Dividend

On February 5, 2019 , the Exelon Board of Directors declared a first quarter 2019 regular quarterly dividend of $0.3625 per share on Exelon’s common stock
payable on March 8, 2019 , to shareholders of record of Exelon at the end of the day on February 20, 2019 .

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ITEM 6.

SELECTED FINANCIAL DATA

Exelon

The selected financial data presented below has been derived from the audited consolidated financial statements of Exelon. This data is qualified in its entirety
by  reference  to  and  should  be  read  in  conjunction  with  Exelon’s  Consolidated  Financial  Statements  and  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND
ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions, except per share data)
Statement of Operations data:

Operating revenues

Operating income

Net income

Net income attributable to common shareholders

Earnings per average common share (diluted):

Net income

Dividends per common share

2018

2017 (c, d)

2016 (a, c, d)

2015 (c)

2014 (b,c)

For the Years Ended December 31,

$

$

$

35,985   $

33,565   $

31,366   $

29,447   $

3,898  

2,084

2,010  

2.07   $

1.38   $

4,395  

3,876

3,786  

3.99   $

1.31   $

3,212  

1,196

1,121  

1.21   $

1.26   $

4,554  

2,250

2,269  

2.54   $

1.24   $

27,429

3,210

1,820

1,623

1.88

1.24

__________
(a) The 2016 financial results include the activity of PHI from the merger effective date of March 24, 2016 through December 31, 2016.
(b) On April 1, 2014, Generation assumed operational control of CENG’s nuclear fleet. As a result, the 2014 financial results include CENG’s results of operations on a fully

consolidated basis.

(c) Amounts have been recasted to reflect the Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost guidance adopted as of

January 1, 2018. See Note 1 — Significant Accounting Policies  of the Combined Notes to Consolidated Financial Statements for additional information.

(d) Amounts for 2017 and 2016 have been recasted to reflect the Revenue from Contracts with Customers guidance adopted as of January 1, 2018. See Note 1 — Significant
Accounting  Policies   of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information.  The  2015  and  2014  balances  are  not  recasted  for  this
guidance and are not comparative.

(In millions)
Balance Sheet data:

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt, including long-term debt to
financing trusts

2018

2017 (a)

2016 (a)

2015 (a)

2014 (a)

December 31,

$

13,360   $

76,707  

119,666

11,404  

11,896   $

74,202  

116,770

10,798  

12,451   $

71,555  

114,952

13,463  

15,334   $

57,439  

95,384

9,118  

34,465  

32,565  

32,216  

24,286  

11,853

52,170

86,416

8,762

19,853

Shareholders’ equity
(a) Amounts for 2017 and 2016 have been recasted to reflect the Revenue from Contracts with Customers guidance adopted as of January 1, 2018. See Note 1 — Significant
Accounting  Policies   of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information.  The  2015  and  2014  balances  are  not  recasted  for  this
guidance and are not comparative.

29,896  

30,764  

25,860  

25,793  

22,608

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Generation

The  selected  financial  data  presented  below  has  been  derived  from  the  audited  consolidated  financial  statements  of  Generation.  This  data  is  qualified  in  its
entirety by reference to and should be read in conjunction with Generation’s Consolidated Financial Statements and ITEM 7. MANAGEMENT'S DISCUSSION
AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)
Statement of Operations data:

Operating revenues

Operating income

2018

2017 (b)

2016 (b)

2015

2014 (a)

For the Years Ended December 31,

$

20,437   $

18,500   $

17,757   $

975  

947  

820  

19,135   $

2,275  

17,393

1,176

Net income
__________
(a) On April 1, 2014, Generation assumed operational control of CENG’s nuclear fleet. As a result, the 2014 financial results include CENG’s results of operations on a fully

2,798  

1,340  

443  

550  

1,019

consolidated basis.

(b) Amounts for 2017 and 2016 have been recasted to reflect the Revenue from Contracts with Customers guidance adopted as of January 1, 2018. See Note 1 — Significant
Accounting  Policies   of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information.  The  2015  and  2014  balances  are  not  recasted  for  this
guidance and are not comparative.

(In millions)
Balance Sheet data:

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt, including long-term debt to
affiliates

2018

2017 (a)

2016 (a)

2015

2014

December 31,

$

8,433   $

6,882   $

6,567   $

6,342   $

23,981  

47,556

5,769  

24,906  

48,457

4,191  

25,585  

47,022

5,689  

25,843  

46,529

4,933  

7,887  

8,644  

8,124  

8,869  

7,311

23,028

44,951

4,459

7,582

Member’s equity
(a) Amounts for 2017 and 2016 have been recasted to reflect the Revenue from Contracts with Customers guidance adopted as of January 1, 2018. See Note 1 — Significant
Accounting  Policies   of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information.  The  2015  and  2014  balances  are  not  recasted  for  this
guidance and are not comparative.

13,669  

13,204  

11,505  

11,635  

12,718

ComEd

The selected financial data presented below has been derived from the audited consolidated financial statements of ComEd. This data is qualified in its entirety
by  reference  to  and  should  be  read  in  conjunction  with  ComEd’s  Consolidated  Financial  Statements  and  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND
ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)

2018

2017

2016

2015

2014

For the Years Ended December 31,

Statement of Operations data:

Operating revenues

Operating income

Net income

$

5,882   $

1,146  

664  

5,536   $

1,323  

567  

5,254   $

1,205  

378  

4,905   $

1,017  

426  

4,564

980

408

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(In millions)

Balance Sheet data:

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt, including long-term debt to
financing trusts

Shareholders’ equity

PECO

2018

2017

2016

2015

2014

December 31,

$

1,570   $

1,364   $

1,554   $

1,518   $

22,058  

31,213

1,925  

8,006  

10,247  

20,723  

29,726

2,294  

6,966  

9,542  

19,335  

28,335

2,938  

6,813  

8,725  

17,502  

26,532

2,766  

6,049  

8,243  

1,723

15,793

25,358

1,923

5,870

7,907

The selected financial data presented below has been derived from the audited consolidated financial statements of PECO. This data is qualified in its entirety
by  reference  to  and  should  be  read  in  conjunction  with  PECO’s  Consolidated  Financial  Statements  and  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND
ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)

2018

2017

2016

2015

2014

For the Years Ended December 31,

Statement of Operations data:

Operating revenues

Operating income

Net income

$

3,038   $

2,870   $

2,994   $

3,032   $

587  

460  

655  

434  

702  

438  

630  

378  

(In millions)

Balance Sheet data:

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt, including long-term debt to
financing trusts

Shareholder's equity

2018

2017

2016

2015

2014

December 31,

$

782   $

822   $

757   $

842   $

8,610  

10,642

809  

3,268  

3,820  

8,053  

10,170

1,267  

2,587  

3,577  

67

7,565  

10,831

727  

2,764  

3,415  

7,141  

10,367

944  

2,464  

3,236  

3,094

572

352

645

6,801

9,860

653

2,416

3,121

 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
   
   
   
   
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BGE

The selected financial data presented below has been derived from the audited consolidated financial statements of BGE. This data is qualified in its entirety by
reference to and should be read in conjunction with BGE’s Consolidated Financial Statements and ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS
OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)

2018

2017

2016

2015

2014

For the Years Ended December 31,

Statement of Operations data:

Operating revenues

Operating income

Net income

$

3,169   $

3,176   $

3,233   $

3,135   $

474  

313  

614  

307  

550  

294  

558  

288  

(In millions)
Balance Sheet data:

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt, including long-term debt to
financing trusts

Shareholder's equity

PHI

2018

2017

2016

2015

2014

December 31,

$

786   $

811   $

842   $

845   $

8,243  

9,716

774  

2,876  

3,354  

7,602  

9,104

760  

2,577  

3,141  

7,040  

8,704

707  

2,533  

2,848  

6,597  

8,295

1,134  

1,732  

2,687  

3,165

439

211

951

6,204

8,056

794

2,109

2,563

The selected financial data presented below has been derived from the audited consolidated financial statements of PHI. This data is qualified in its entirety by
reference to and should be read in conjunction with PHI’s Consolidated Financial Statements and ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)

2018

2017

2016

2016

2015

2014

Successor

Predecessor

For the Years Ended 
December 31,

March 24 to December
31

January 1 to
March 23,

For the Years Ended 
December 31,

Statement of Operations data (a) :

Operating revenues

Operating income

Net income (loss) from continuing operations

Net income (loss)

$

4,805   $

4,679   $

3,643     $

650  

398  

398  

769  

362  

362  

68

93    

(61)    

(61)    

1,153  

105  

19  

19  

$4,935   $

4,808

673  

318  

327  

605

242

242

 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
   
   
   
   
 
   
 
 
   
 
 
 
   
 
 
   
   
     
   
   
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(In millions)
Balance Sheet data (a) :

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt

Preferred Stock

Successor

December 31,

Predecessor

December 31,

2018

2017

2016

2015

$

1,533   $

1,551   $

1,838     $

13,446  

21,984  

1,592  

6,134  

—  

12,498  

21,247  

1,931  

5,478  

—  

11,598    

21,025    

2,284    

5,645    

—    

8,016    

Member’s equity/Shareholders' equity
__________
(a) As a result of the PHI Merger in 2016, Exelon has elected to present PHI's selected financial data for the periods reflected above.

9,282  

8,825  

Pepco

The selected financial data presented below has been derived from the audited consolidated financial statements of Pepco. This data is qualified in its entirety
by  reference  to  and  should  be  read  in  conjunction  with  Pepco’s  Consolidated  Financial  Statements  and  ITEM  7.  MANAGEMENT'S  DISCUSSION  AND
ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)
Statement of Operations data (a) :

Operating revenues

Operating income

Net income

(In millions)

Balance Sheet data (a) :

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt

2018

2017

2016

2015

2014

For the Years Ended December 31,

$

2,239   $

2,158   $

2,186   $

2,129   $

320  

210  

399  

205  

174  

42  

385  

187  

2018

2017

2016

2015

December 31,

$

760   $

710   $

684   $

6,460  

8,299  

628  

2,704  

6,001  

7,832  

550  

2,521  

5,571  

7,335  

596  

2,333  

2,300  

Shareholder's equity
__________
(a) As a result of the PHI Merger in 2016, Exelon has elected to present Pepco's selected financial data for the periods reflected above.

2,740  

2,533  

69

1,474

10,864

16,188

2,327

4,823

183

4,413

2,055

349

171

726

5,162

6,908

455

2,340

2,240

 
   
 
   
 
 
   
 
   
   
     
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
   
   
   
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DPL

The selected financial data presented below has been derived from the audited consolidated financial statements of DPL. This data is qualified in its entirety by
reference to and should be read in conjunction with DPL’s Consolidated Financial Statements and ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)
Statement of Operations data (a) :

Operating revenues

Operating income

Net income (loss)

(In millions)
Balance Sheet data (a) :

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt

2018

2017

2016

2015

2014

For the Years Ended December 31,

$

1,332   $

1,300   $

1,277   $

1,302   $

190  

120  

229  

121  

50  

(9)  

165  

76  

2018

2017

2016

2015

December 31,

$

336   $

325   $

370   $

3,821  

4,588  

375  

1,403  

3,579  

4,357  

547  

1,217  

3,273  

4,153  

381  

1,221  

1,326  

1,282

207

104

388

3,070

3,969

564

1,061

1,237

Shareholder's equity
__________
(a) As a result of the PHI Merger in 2016, Exelon has elected to present DPL's selected financial data for the periods reflected above.

1,509  

1,335  

ACE

The selected financial data presented below has been derived from the audited consolidated financial statements of ACE. This data is qualified in its entirety by
reference to and should be read in conjunction with ACE’s Consolidated Financial Statements and  ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS
OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS .

(In millions)
Statement of Operations data (a) :

Operating revenues

Operating income

Net income (loss)

2018

2017

2016

2015

2014

For the Years Ended December 31,

$

1,236   $

1,186   $

1,257   $

1,295   $

149  

75  

157  

77  

7  

(42)  

134  

40  

1,210

137

46

70

 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
   
   
   
 
 
 
 
 
 
   
   
   
   
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(In millions)
Balance Sheet data (a) :

Current assets

Property, plant and equipment, net

Total assets

Current liabilities

Long-term debt

2018

2017

2016

2015

December 31,

$

240   $

258   $

2,966  

3,699  

422  

1,170  

2,706  

3,445  

619  

840  

399   $

2,521  

3,457   $

320   $

1,120  

1,034  

546

2,322

3,387

297

1,153

1,000

Shareholder's equity
__________
(a) As a result of the PHI Merger in 2016, Exelon has elected to present ACE's selected financial data for the periods reflected above.

1,126  

1,043  

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Item 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Exelon

Executive Overview

Exelon is a utility services holding company engaged in the generation, delivery, and marketing of energy through Generation and the energy distribution and
transmission businesses through ComEd, PECO, BGE, Pepco, DPL and ACE.

Exelon has twelve reportable segments consisting of Generation’s six reportable segments (Mid-Atlantic, Midwest, New England, New York, ERCOT and Other
Power  Regions),  ComEd,  PECO,  BGE,  Pepco,  DPL  and  ACE.  During  the  first  quarter  of  2019,  due  to  a  change  in  economics  in  our  New  England  region,
Generation is changing the way that information is reviewed by the CODM. The New England region will no longer be regularly reviewed as a separate region by
the CODM nor will it be presented separately in any external information presented to third parties. Information for the New England region will be reviewed by
the CODM as part of Other Power Regions. As a result, beginning in the first quarter of 2019, Generation will disclose five reportable segments consisting of
Mid-Atlantic, Midwest, New York, ERCOT and Other Power Regions. See Note 1 - Significant Accounting Policies and Note 24 - Segment Information of the
Combined Notes to Consolidated Financial Statements for additional information regarding Exelon's principal subsidiaries and reportable segments.

Through  its  business  services  subsidiary,  BSC,  Exelon  provides  its  subsidiaries  with  a  variety  of  support  services  at  cost,  including  legal,  human  resources,
financial, information technology and supply management services. PHI also has a business services subsidiary, PHISCO, which provides a variety of support
services at cost, including legal, accounting, engineering, customer operations, distribution and transmission planning, asset management, system operations,
and  power  procurement,  to  PHI  operating  companies.  The  costs  of  BSC  and  PHISCO  are  directly  charged  or  allocated  to  the  applicable  subsidiaries.
Additionally, the results of Exelon’s corporate operations include interest costs and income from various investment and financing activities.

Exelon’s  consolidated  financial  information  includes  the  results  of  its  eight  separate  operating  subsidiary  registrants,  Generation,  ComEd,  PECO,  BGE,  PHI,
Pepco, DPL and ACE, which, along with Exelon, are collectively referred to as the Registrants. The following combined Management’s Discussion and Analysis
of Financial Condition and Results of Operations is separately filed by Exelon, Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE. However, none of
the Registrants makes any representation as to information related solely to any of the other Registrants.

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Table of Contents

Financial Results of Operations

GAAP Results of Operations. The following table sets forth Exelon's GAAP consolidated Net Income attributable to common shareholders by Registrant for the
year ended December 31, 2018 compared to the same period in 2017 and December 31, 2017 compared to the same period in 2016 . For additional information
regarding the financial results for the years ended December 31, 2018 , 2017 and 2016 see the discussions of Results of Operations by Registrant.

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

Other (b)

2018

2017

$

2,010   $

370  

664  

460  

313  

210  

120  

75  

(195)  

Favorable (unfavorable)
2018 vs. 2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

3,786   $

2,710  

(1,776)   $

(2,340)  

567  

434  

307  

205  

121  

77  

(594)  

97  

26  

6  

5  

(1)  

(2)  

399  

1,121   $

483  

378  

438  

286  

42  

(9)  

(42)  

(422)  

2,665

2,227

189

(4)

21

163

130

119

(172)

Successor

For the Years Ended December 31,

2018

2017

Favorable (unfavorable)
2018 vs. 2017 variance

March 24 to December
31,

Predecessor

January 1 to 
March 23,

2016

2016

PHI (a)
__________
(a)
(b) Primarily includes eliminating and consolidating adjustments, Exelon’s corporate operations, shared service entities and other financing and investing activities.

Includes the consolidated results of Pepco, DPL and ACE.

(61)     $

362   $

398   $

36   $

$

19

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 . Net income attributable to common shareholders decreased by $1,776
million and diluted earnings per average common share decreased to $2.07 in 2018 from $3.99 in 2017 primarily due to:

•

•

•

•

•

•

•

•

•

Impacts associated with the one-time remeasurement of deferred income taxes in 2017 as a result of the TCJA;

Net unrealized losses on NDT funds in 2018 compared to net gains in 2017;

Lower realized energy prices;

Accelerated depreciation and amortization due to the decision to early retire the Oyster Creek and TMI nuclear facilities;

The gain associated with the FitzPatrick acquisition in 2017;

Decrease  in  reserves  for  uncertain  tax  positions  in  2017  related  to  the  deductibility  of  certain  merger  commitments  associated  with  the  2012
Constellation and 2016 PHI acquisitions;

Increased mark-to-market losses;

The gain recorded upon deconsolidation of EGTP's net liabilities in 2017;

The absence of EGTP earnings resulting from its deconsolidation in the fourth quarter of 2017;

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•

•

Long-lived asset impairments of certain merchant wind assets in West Texas; and

Increased storm costs at PECO and BGE.

The decreases were partially offset by;

•

•

•

•

•

•

•

•

•

•

•

The impact of the New York and Illinois ZEC revenue (including the impact of zero emission credits generated in Illinois from June 1, 2017 through
December 31, 2017);

Long-lived asset impairments primarily related to the EGTP assets held for sale in 2017;

Increased capacity prices;

The impact of lower federal income tax rate as a result of the TCJA at Generation;

Net realized gains on NDT funds;

The gain on the settlement of a long-term gas supply agreement;

Decreased nuclear outage days;

Increased electric distribution and energy efficiency formula rate earnings at ComEd;

Regulatory rate increases at PECO, BGE and PHI;

The impact of favorable weather at PECO, DPL and ACE; and

The absences of a 2017 impairment of certain transmission-related income tax regulatory assets at ComEd, BGE and PHI.

The decrease in diluted earnings per share was also due to the increase in Exelon’s average diluted shares outstanding as a result of the June 2017 common
stock issuance.

Year Ended December 31, 2017 Compared to Year Ended December 31, 2016 . Net income attributable to common shareholders increased by $2,665
million and diluted earnings per average common share increased to $3.99 in 2017 from $1.21 in 2016 primarily due to:

•

•

•

•

•

•

•

•

•

•

Impacts associated with the one-time remeasurement of deferred income taxes as a result of the TCJA;

The gain associated with the FitzPatrick acquisition;

Accelerated depreciation and amortization due to the decision to early retire the TMI nuclear facility in 2017 compared to the previous decision in
2016 to early retire the Clinton and Quad Cities nuclear facilities;

Higher net unrealized and realized gains on NDT funds;

The impact of the New York ZEC revenue;

The gain recorded upon deconsolidation of EGTP's net liabilities;

Increased capacity prices;

Decreased nuclear outage days;

Decrease  in  reserves  for  uncertain  tax  positions  in  2017  related  to  the  deductibility  of  certain  merger  commitments  associated  with  the  2012
Constellation and 2016 PHI acquisitions compared to costs incurred as part of the settlement orders approving the PHI acquisition and a charge
related to a 2012 CEG merger commitment in 2016;

Increased electric distribution and transmission formula rate earnings at ComEd;

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Table of Contents

•

•

Regulatory rate increases at BGE and PHI; and

Penalties and associated interest expense as a result of a tax court decision on Exelon's like-kind exchange position in 2016.

The increases were partially offset by;

•

•

•

•

•

•

•

Long-lived asset impairments primarily related to the EGTP assets held for sale;

Lower realized energy prices;

The conclusion of the Ginna Reliability Support Services Agreement;

Increased costs related to the acquisition of the FitzPatrick nuclear facility;

Increased mark-to-market losses;

The impact of unfavorable weather at ComEd, PECO, DPL and ACE; and

The impairment of certain transmission-related income tax regulatory assets at ComEd, BGE and PHI.

The net increase in diluted earnings per share from the items listed above was partially offset by the impact of the increase in Exelon’s average diluted shares
outstanding as a result of the June 2017 common stock issuance.

Adjusted (non-GAAP) Operating Earnings. In addition to net income, Exelon evaluates its operating performance using the measure of Adjusted (non-GAAP)
operating  earnings  because  management  believes  it  represents  earnings  directly  related  to  the  ongoing  operations  of  the  business.  Adjusted  (non-GAAP)
operating earnings exclude certain costs, expenses, gains and losses and other specified items. This information is intended to enhance an investor’s overall
understanding  of  year-to-year  operating  results  and  provide  an  indication  of  Exelon’s  baseline  operating  performance  excluding  items  that  are  considered  by
management to be not directly related to the ongoing operations of the business. In addition, this information is among the primary indicators management uses
as  a  basis  for  evaluating  performance,  allocating  resources,  setting  incentive  compensation  targets  and  planning  and  forecasting  of  future  periods.  Adjusted
(non-GAAP)  operating  earnings  is  not  a  presentation  defined  under  GAAP  and  may  not  be  comparable  to  other  companies’  presentations  or  deemed  more
useful than the GAAP information provided elsewhere in this report.

The following table provides a reconciliation between Net income attributable to common shareholders as determined in accordance with GAAP and Adjusted
(non-GAAP) operating earnings for the year ended December 31, 2018 as compared to 2017 and 2016 : 

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Table of Contents

(All amounts after tax; in millions, except per share amounts)

Net Income Attributable to Common Shareholders

Mark-to-Market Impact of Economic Hedging Activities (a) (net of
taxes of $89, $68 and $18, respectively)
Unrealized Losses (Gains) Related to NDT Funds (b) (net of taxes
of $289, $286 and $112, respectively)
Amortization of Commodity Contract Intangibles (c)  (net of taxes
of $0, $22 and $22, respectively)
Merger and Integration Costs (d)  (net of taxes of $2, $25 and
$50, respectively)
Merger Commitments (e)  (net of taxes of $0, $137 and $126,
respectively)
Long-Lived Asset Impairments (f)  (net of taxes of $13, $204 and
$68, respectively)
Plant Retirements and Divestitures (g)  (net of taxes of $181, $134
and $273, respectively)
Cost Management Program (h)  (net of taxes of $16, $21 and $21,
respectively)
Annual Asset Retirement Obligation Update (i) (net of taxes of $7,
$1 and $13, respectively)
Vacation Policy Change (j)  (net of taxes of $0, $21 and $0,
respectively)

Change in Environmental Liabilities (net of taxes of $0, $17 and
$0, respectively)
Bargain Purchase Gain (k)  (net of taxes of $0, $0 and $0,
respectively)
Gain on Deconsolidation of Business (l)  (net of taxes of $0, $83
and $0, respectively)
Gain on Contract Settlement (m)  (net of taxes of $20, $0 and $0,
respectively)
Like-Kind Exchange Tax Position (n)  (net of taxes of $0, $66 and
$61, respectively)
Curtailment of Generation Growth and Development Activities (o)
 (net of taxes of $0, $0 and $35, respectively)
Reassessment of Deferred Income Taxes (p)  (entire amount
represents tax expense)

Tax Settlements (q)  (net of taxes of $0, $1 and $0, respectively)
Noncontrolling Interests (r) (net of taxes of $24, $24 and $9,
respectively)

Adjusted (non-GAAP) Operating Earnings

For the Years Ended December 31,

2018

2017

2016

Earnings per
Diluted Share

Earnings per
Diluted Share

Earnings per
Diluted Share

$

2,010   $

2.07   $

3,786   $

3.99   $

1,121   $

1.21

252  

0.26  

107  

0.11  

24  

0.03

337  

0.35  

(318)  

(0.34)  

(118)  

(0.13)

—  

3  

—  

35  

—  

—  

—  

34  

40  

0.04  

35  

0.04  

114  

(137)  

(0.14)  

437  

0.04  

321  

0.34  

103  

512  

0.53  

207  

0.22  

432  

34  

(2)  

0.04  

34  

—  

(75)  

(0.08)

48  

20  

—  

(1)  

—  

—  

0.05  

0.02  

—  

—  

—  

—  

(33)  

(0.03)  

27  

0.03  

(233)  

(0.25)  

(130)  

(0.14)  

(55)  

(0.06)  

—  

—  

—  

—  

(22)  

—  

—  

—  

(26)  

(0.03)  

199  

—  

—  

(0.02)  

(1,299)  

—  

(5)  

(1.37)  

(0.01)  

(113)  

(0.12)  

114  

0.12  

102  

$

3,026   $

3.12   $

2,487   $

2.62   $

2,475   $

76

0.04

0.12

0.47

0.11

0.47

0.04

—

—

—

—

—

0.21

0.06

0.01

—

0.11

2.67

—  

—  

—  

—  

—  

57  

10  

—  

 
 
 
 
 
 
   
 
   
 
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__________
Note:
Unless otherwise noted, the income tax impact of each reconciling item between GAAP Net Income and Adjusted (non-GAAP) Operating Earnings is based on the marginal
statutory federal and state income tax rates for each Registrant, taking into account whether the income or expense item is taxable or deductible, respectively, in whole or in
part. For all items except the unrealized gains and losses related to NDT funds, the marginal statutory income tax rates for 2018 , 2017 and 2016 ranged from 26.0 percent to
29.0 percent, 39.0 percent to 41.0 percent and 39.0 percent to 41.0 percent, respectively. Under IRS regulations, NDT fund returns are taxed at different rates for investments
if they are in qualified or non-qualified funds. The effective tax rates for the unrealized gains and losses related to NDT funds were 46.2 percent, 47.4 percent and 48.7 percent
for the years ended December 31, 2018 , 2017 and 2016 , respectively.
(a) Reflects  the  impact  of  net  losses  on  economic  hedging  activities.  See  Note  12  -  Derivative Financial Instruments   of  the  Combined  Notes  to  Consolidated  Financial

Statements for additional information related to hedging activities.

(b) Reflects the impact of net unrealized gains and losses on Generation’s NDT funds for Non-Regulatory and Regulatory Agreement Units. The impacts of the Regulatory

Agreement Units, including the associated income taxes, are contractually eliminated, resulting in no earnings impact.

(c) Represents  the  non-cash  amortization  of  intangible  assets,  net,  primarily  related  to  commodity  contracts  recorded  at  fair  value  related  to,  in  2016,  the  Integrys  and

ConEdison Solutions acquisitions, and in 2017, the ConEdison Solutions and FitzPatrick acquisitions.

(d) Reflects certain costs associated with mergers and acquisitions, including, if and when applicable, professional fees, employee-related expenses and integration activities.
In  2016  and  2017,  reflects  costs  related  to  the  PHI  and  FitzPatrick  acquisitions,  partially  offset  in  2016  at  ComEd,  and  in  2017,  at  PHI,  by  the  anticipated  recovery  of
previously incurred PHI acquisition costs. In 2018, reflects costs related to the PHI acquisition. See Note  5  -  Mergers, Acquisitions and Dispositions  of the Combined
Notes to Consolidated Financial Statements for additional information.

(f)

(g)

(e) Represents costs incurred as part of the settlement orders approving the PHI acquisition, and in 2016, a charge related to a 2012 CEG merger commitment, and in 2017,
primarily  a  decrease  in  reserves  for  uncertain  tax  positions  related  to  the  deductibility  of  certain  merger  commitments  associated  with  the  2012  CEG  and  2016  PHI
acquisitions.
In 2016, primarily reflects the impairment of upstream assets and certain wind projects at Generation. In 2017, primarily reflects the impairment of the EGTP assets held
for sale and PHI District of Columbia sponsorship intangible asset. In 2018, primarily reflects the impairment of certain wind projects at Generation.
In 2016, primarily reflects accelerated depreciation and amortization expenses through December 2016 and construction work in progress impairments associated with
Generation’s previous decision to early retire the Clinton and Quad Cities nuclear facilities, partially offset by a gain associated with Generation’s sale of the New Boston
generating site. In 2017, primarily reflects accelerated depreciation and amortization expenses and one-time charges associated with Generation's previous decision to
early  retire  the  TMI  nuclear  facility.  In  2018,  primarily  reflects  accelerated  depreciation  and  amortization  expenses  and  one-time  charges  associated  with  Generation's
decision  to  early  retire  the  Oyster  Creek  nuclear  facility,  a  charge  associated  with  a  remeasurement  of  the  Oyster  Creek  ARO  and  accelerated  depreciation  and
amortization  expenses  associated  with  the  previous  decision  to  early  retire  the  TMI  nuclear  facility,  partially  offset  by  a  gain  associated  with  Generation's  sale  of  its
electrical contracting business.

(h) Primarily represents severance and reorganization costs related to a cost management program.
(i)
For Pepco, reflects an increase related to asbestos identified at its Buzzard Point property.
(j) Represents the reversal of previously accrued vacation expenses as a result of a change in Exelon's vacation vesting policy.
(k) Represents the excess of the fair value of assets and liabilities acquired over the purchase price for the FitzPatrick acquisition.
(l) Represents the gain recorded upon deconsolidation of EGTP's net liabilities, which included the previously impaired assets and related debt, as a result of the November

2017 bankruptcy filing.

(m) Represents the gain on the settlement of a long-term gas supply agreement at Generation.
(n) Represents in 2016 the recognition of a penalty and associated interest expense as a result of a tax court decision on Exelon’s like-kind exchange tax position, and in
2017,  adjustments  to  income  tax,  penalties  and  interest  expenses  as  a  result  of  the  finalization  of  the  IRS  tax  computation  related  to  Exelon’s  like-kind  exchange  tax
position.

(o) Reflects the one-time recognition for a loss on sale of assets and asset impairment charges pursuant to Generation’s strategic decision in the fourth quarter of 2016 to

narrow the scope and scale of its growth and development activities.

(p) Reflects in 2016 the non-cash impact of the remeasurement of deferred income taxes as a result of changes in forecasted apportionment related to the PHI acquisition. In
2017, one-time non-cash impacts associated with remeasurements of deferred income taxes as a result of the TCJA (including impacts on pension obligations contained
within  Other),  changes  in  the  Illinois  and  District  of  Columbia  statutory  tax  rates  and  changes  in  forecasted  apportionment.  In  2018,  reflects  an  adjustment  to  the
remeasurement of deferred income taxes as a result of the TCJA and changes in forecasted apportionment.

(q) Reflects benefits related to the favorable settlement of certain income tax positions related to PHI's unregulated business interests.
(r) Represents elimination from Generation’s results of the noncontrolling interests related to certain exclusion items, primarily related to the impact of unrealized gains and

losses on NDT funds at CENG.

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Significant 2018 Transactions and Recent Developments

Regulatory Implications of the Tax Cuts and Jobs Act (TCJA)

The Utility Registrants have made filings with their respective State regulators to begin passing back to customers the ongoing annual tax savings resulting from
the TCJA. The amounts being proposed to be passed back to customers reflect the annual benefit of lower income tax rates and the settlement of a portion of
deferred  income tax  regulatory liabilities established upon  enactment  of the  TCJA. The  Utility Registrants  have  identified over $675 million in ongoing  annual
savings  to  be  returned  to  customers  related  to  TCJA  from  their  distribution  utility  operations.  See  Note  4 — Regulatory  Matters  of  the  Combined  Notes  to
Consolidated Financial Statements for additional information.

Utility Rates and Base Rate Proceedings

The Utility Registrants file base rate cases with their regulatory commissions seeking increases or decreases to their electric transmission and distribution, and
gas  distribution  rates  to  recover  their  costs  and  earn  a  fair  return  on  their  investments.  The  outcomes  of  these  regulatory  proceedings  impact  the  Utility
Registrants’ current and future results of operations, cash flows and financial position.

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The following tables show the Utility Registrants’ completed and pending distribution base rate case proceedings in 2018. See Note 4 — Regulatory Matters of
the Combined Notes to Consolidated Financial Statements for additional information on other regulatory proceedings.

Completed Utility Distribution Base Rate Case Proceedings

Registrant/Jurisdiction

Filing Date

Requested Revenue
Requirement Increase
(Decrease)

Approved Revenue
Requirement Increase
(Decrease)

Approved ROE

Approval Date

Rate Effective Date

ComEd - Illinois (Electric)

April 16, 2018 $

PECO - Pennsylvania (Electric)

March 29, 2018 $

(23)

(a)   $
82 (a)   $

(24)

(a)  
25 (a)  

8.69%

December 4, 2018

January 1, 2019

N/A

December 20, 2018

January 1, 2019

BGE - Maryland (Natural Gas)

Pepco - Maryland (Electric)

Pepco - District of Columbia
(Electric)

DPL - Maryland (Electric)

DPL - Delaware (Electric)

June 8, 2018
(amended
August 24,
2018 and
October 12,
2018)

January 2, 2018
(amended
February 5,
2018)

December 19,
2017 (amended
February 9,
2018)

July 14, 2017
(amended
November 16,
2017)

August 17,
2017 (amended
February 9,
2018)

August 17,
2017 (amended
February 9,
2018)

$

$

$

$

$

$

61  

$

43  

9.8%

January 4, 2019

January 4, 2019

3 (a)   $

(15)

(a)  

9.5%

May 31, 2018

June 1, 2018

66  

$

(24)

(a)  

9.525%

August 9, 2018

August 13, 2018

19  

$

13  

9.5%

February 9, 2018

February 9,
2018

12 (a)   $

(7)

(a)  

9.7%

August 21, 2018

March 17, 2018

4 (a)   $

(4)

(a)  

9.7%

November 8, 2018

March 17, 2018

DPL - Delaware (Natural Gas)
__________
(a)

Includes the annual ongoing TCJA tax savings further discussed above.

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Pending Distribution Base Rate Case Proceedings

Registrant/Jurisdiction

Filing Date

Requested Revenue Requirement
Increase

Requested ROE

Expected Approval Timing

August 21, 2018
(amended November 19,
2018)

January 15, 2019

$

$

122 (a)  
30  

10.1%

10.3%

Third quarter of 2019

Third quarter of 2019

ACE - New Jersey (Electric)

Pepco - Maryland (Electric)
__________
(a)

Includes the annual ongoing TCJA tax savings further discussed above.

Transmission Formula Rate

The following total (decreases)/increases were included in ComEd's, BGE's, Pepco's, DPL's and ACE's 2018 annual electric transmission formula rate updates.

Registrant

Initial Revenue
Requirement
(Decrease) Increase (b)

Annual Reconciliation
Increase/(Decrease)

Total Revenue
Requirement (Decrease)
Increase )

Allowed Return on Rate
Base (d)

Allowed ROE (e)

ComEd (a)
BGE (a)

Pepco

DPL

$

(44) $

18

$

10

6

14

4

2

13

(26)

26 (c)  
8  

27  

8.32%

7.61%

7.82%

7.29%

11.50%

10.50%

10.50%

10.50%

ACE (a)
__________
(a) The time period for any challenges to the annual transmission formula rate update flings expired with no challenges submitted.
(b) The initial revenue requirement changes reflect the annual benefit of lower income tax rates effective January 1, 2018 resulting from the enactment of the TCJA of  $69
million , $18 million , $13 million , $12 million and $11 million for  ComEd,  BGE,  Pepco,  DPL  and  ACE,  respectively.  They  do  not  reflect  the  pass  back  or  recovery  of
income tax-related regulatory liabilities or assets, including those established upon enactment of the TCJA. See Note 4 — Regulatory Matters of the Combined Notes to
Consolidated Financial Statements for additional information.

10.50%

8.02%

(4)

4

—  

(c) BGE's transmission  revenue requirement includes a FERC approved dedicated  facilities charge of  $12 million to recover the costs of providing transmission  service to

specifically designated load by BGE.

(d) Represents the weighted average debt and equity return on transmission rate bases.
(e) As part of the FERC-approved settlement of ComEd’s 2007 transmission rate case, the rate of return on common equity is 11.50% , inclusive of a 50-basis-point incentive
adder for being a member of a RTO, and the common equity component of the ratio used to calculate the weighted average debt and equity return for the transmission
formula  rate  is  currently  capped  at  55% .  As  part  of  the  FERC-approved  settlement  of  the  ROE  complaint  against  BGE,  Pepco,  DPL  and  ACE,  the  rate  of  return  on
common equity is 10.50% , inclusive of a 50-basis-point incentive adder for being a member of a RTO.

PECO Transmission Formula Rate

On May 1, 2017, PECO filed a request with FERC seeking approval to update its transmission rates and change the manner in which PECO’s transmission rate
is  determined  from  a  fixed  rate  to  a  formula  rate.  The  formula  rate  will  be  updated  annually  to  ensure  that  under  this  rate  customers  pay  the  actual  costs  of
providing transmission services. The formula rate filing includes a requested increase of $22 million to PECO’s annual transmission revenues and a requested
rate of return on common equity of 11% , inclusive of a 50 basis point adder for being a member of a regional transmission organization. PECO requested that
the new transmission rate be effective as of July 2017. On June 27, 2017, FERC issued an Order accepting the filing and suspending the proposed rates until
December  1,  2017,  subject  to  refund,  and  set  the  matter  for  hearing  and  settlement  judge  procedures.  On  May  4,  2018,  the  Chief  Administrative  Law  Judge
terminated  settlement  judge  procedures  and  designated  a  new  presiding  judge.  PECO  cannot  predict  the  outcome  of  this  proceeding,  or  the  transmission
formula FERC may approve.

On  May  11,  2018,  pursuant  to  the  transmission  formula  rate  request  discussed  above,  PECO  made  its  first  annual  formula  rate  update,  which  included  a
revenue decrease of $6 million. The revenue decrease of $6 million included

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an  approximately  $20 million  reduction  as  a  result  of  the  tax  savings  associated  with  the  TCJA.  The  updated  transmission  rate  was  effective  June  1,  2018,
subject to refund.

Illinois ZEC Procurement

Pursuant to FEJA, on January 25, 2018, the ICC announced that Generation’s Clinton Unit 1, Quad Cities Unit 1 and Quad Cities Unit 2 nuclear plants were
selected as the winning bidders through the IPA's ZEC procurement event. Generation executed the required ZEC procurement contracts with Illinois utilities,
including ComEd, effective January 26, 2018 and began recognizing revenue, with compensation for the sale of ZECs retroactive to the June 1, 2017 effective
date of FEJA. During the year ended December 31, 2018, Generation recognized revenue of  $373 million , of which  $150 million  related to ZECs generated
from June 1, 2017 through December 31, 2017.

Early Plant Retirements

On February 2, 2018, Exelon announced that Generation will permanently cease generation operations at Oyster Creek at the end of its current operating cycle
and  permanently  ceased  generation  operations  in  September  2018.  Because  of  the  decision  to  early  retire  Oyster  Creek  in  2018,  Exelon  and  Generation
recognized certain one-time charges in the first quarter of 2018 related to a materials and supplies inventory reserve adjustment, employee-related costs and
construction work-in-progress impairments, among other items.

On  July  31,  2018,  Generation  entered  into  an  agreement  with  Holtec  International  and  its  indirect  wholly  owned  subsidiary,  Oyster  Creek  Environmental
Protection,  LLC,  for  the  sale  and  decommissioning  of  Oyster  Creek.  See  Note    5   —     Mergers,  Acquisitions  and  Dispositions   of  the  Combined  Notes  to
Consolidated Financial Statements for additional information.

On May 30, 2017, Generation announced it will permanently cease generation operations at Three Mile Island Generating Station (TMI) on or about September
30, 2019. The plant is currently committed to operate through May 2019. As a result of the early nuclear plant retirement decisions at Oyster Creek and TMI,
Exelon  and  Generation  will  also  recognize  annual  incremental  non-cash  charges  to  earnings  stemming  from  shortening  the  expected  economic  useful  lives
primarily related to accelerated depreciation of plant assets (including any ARC), accelerated amortization of nuclear fuel, and additional ARO accretion expense
associated with the changes in decommissioning timing and cost assumptions were also recorded. The following table summarizes the actual incremental non-
cash  expense  item  incurred  in  2018  and  the  estimated  amount  of  incremental  non-cash  expense  items  expected  to  be  incurred  in  2019  due  to  the  early
retirement decisions.

Income statement expense (pre-tax)

Depreciation and Amortization (b)

         Accelerated depreciation (c)

         Accelerated nuclear fuel amortization

Operating and maintenance (d)

Total

Actual

2018

Projected (a)

2019

  $

  $

539   $

57  

32  

628   $

230

5

5

240

_________
(a) Actual results may differ based on incremental future capital additions, actual units of production for nuclear fuel amortization, future revised ARO assumptions, etc.
(b) Reflects incremental accelerated depreciation and amortization for TMI and Oyster Creek for the year ended December 31, 2018. The Oyster Creek year-to-date amounts

are from February 2, 2018 through September 17, 2018.

(c) Reflects incremental accelerated depreciation of plant assets, including any ARC.
(d) Primarily includes materials and supplies inventory reserve adjustments, employee-related costs and CWIP impairments.

In 2017, PSEG made public similar financial challenges facing its New Jersey nuclear plants including Salem, of which Generation owns a 42.59% ownership
interest. PSEG is the operator of Salem and also has the decision making authority to retire Salem.

On May 23, 2018, New Jersey enacted legislation that established a ZEC program, similar to that in Illinois and New York, that will provide compensation for
nuclear plants that demonstrate to the NJBPU that they meet certain requirements, including that they make a significant contribution to air quality in the state
and that their revenues are insufficient to cover their costs and risks. The NJBPU must complete its processes for determining eligibility for,

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and  participation  in,  the  ZEC  program  by  April  18,  2019.  On  December  19,  2018,  PSEG  submitted  its  application  for  Salem.  Assuming  the  successful
implementation of the New Jersey ZEC program and the selection of Salem as one of the qualifying facilities, the New Jersey ZEC program has the potential to
mitigate the heightened risk of earlier retirement for Salem. See Note 4 — Regulatory Matters  and Note  8  -  Early Plant Retirements  of the Combined Notes to
Consolidated Financial Statements for additional information.

Generation’s  Dresden,  Byron,  and  Braidwood  nuclear  plants  in  Illinois  are  also  showing  increased  signs  of  economic  distress,  which  could  lead  to  an  early
retirement,  in  a  market  that  does  not  currently  compensate  them  for  their  unique  contribution  to  grid  resiliency  and  their  ability  to  produce  large  amounts  of
energy without carbon and air pollution. The May 2018 PJM capacity auction for the 2021-2022 planning year resulted in the largest volume of nuclear capacity
ever  not  selected  in  the  auction,  including  all  of  Dresden,  and  portions  of  Byron  and  Braidwood.  Exelon  continues  to  work  with  stakeholders  on  state  policy
solutions, while also advocating for broader market reforms at the regional and federal level.

On March 29, 2018, based on ISO-NE capacity auction results for the 2021 - 2022 planning year in which Mystic Unit 9 did not clear, Generation notified grid
operator ISO-NE of its plans to early retire its Mystic Generating Station assets absent regulatory reforms on June 1, 2022, at the end of the current capacity
commitment for Mystic Units 7 and 8. As a result of these developments, Generation completed a comprehensive review of the estimated undiscounted future
cash flows of the New England asset group during the first quarter of 2018 and no impairment charge was required.

The ISO-NE announced that it would take a three-step approach to fuel security.

•

•

•

First, on May 1, 2018, ISO-NE made a filing with FERC requesting waiver of certain tariff provisions to allow it to retain Mystic Units 8 and 9 for fuel
security for the 2022 - 2024 planning years. FERC denied the waiver request on procedural grounds on July 2, 2018 and ordered ISO-NE to (i) make a
filing within 60 days providing for the filing of a short-term cost-of-service agreement to address fuel security concerns and (ii) make a filing by July 1,
2019 proposing permanent tariff revisions that would improve its market design to better address regional fuel security concerns. 

Second, in accordance with FERC's July 2, 2018 order, on August 31, 2018, ISO-NE made a filing with FERC proposing short-term tariff changes to
permit it to retain a resource for fuel security reliability reasons, which FERC accepted on December 3, 2018.

Third,  ISO-NE  stated  its  intention  to  work  with  stakeholders  to  develop  long-term  market  rule  changes  to  address  system  resiliency  considering
significant reliability risks identified in ISO-NE’s January 2018 fuel security report. Changes to market rules are necessary because critical units to the
region, such as Mystic Units 8 and 9, cannot recover future operating costs including the cost of procuring fuel. In its July 2, 2018 order, FERC ordered
ISO-NE  to  make  a  filing  by  July  1,  2019  proposing  permanent  tariff  revisions  that  would  improve  its  market  design  to  better  address  regional  fuel
security concerns. In January 2019, ISO-NE indicated that it intends to seek an extension of the deadline for this filing to November 15, 2019.

On May 16, 2018, Generation made a filing with FERC to establish cost-of-service compensation and terms and conditions of service for Mystic Units 8 and 9 for
the period between June 1, 2022 - May 31, 2024. On December 20, 2018, FERC issued an order accepting the cost of service agreement reflecting a number of
adjustments to the annual fixed revenue requirement and allowing for recovery of a substantial portion of the costs associated with the Everett Marine Terminal.
On January 4, 2019, Generation notified ISO–NE that it will participate in the Forward Capacity Market auction for the 2022 – 2023 capacity commitment period.
In addition, on January 22, 2019, Exelon and several other parties filed requests for rehearing of certain findings of the December 20, 2018 order. The request
for  rehearing  does  not  alter  Generation's  commitment  to  participate  in the  Forward  Capacity  Auction  for  the  2022–2023  capacity  commitment  period.  Further
developments such as the failure of ISO-NE to adopt long-term solutions for reliability and fuel security could potentially result in future impairments of the New
England asset group, which could be material. See Note  7  —  Impairment of Long-Lived Assets and Intangibles  and Note  8  -  Early Plant Retirements  of the
Combined Notes to Consolidated Financial Statements for additional information.

Pension Plan Merger

Effective  January  1,  2019,  Exelon  is  merging  the  Exelon  Corporation  Cash  Balance  Pension  Plan  (CBPP)  into  the  Exelon  Corporation  Retirement  Program
(ECRP). The merging of the plans is not changing the benefits offered to the plan participants and, thus, has no impact on Exelon's pension obligation. However,
beginning in 2019, actuarial

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losses and gains related to the CBPP and ECRP will be amortized over participants’ average remaining service period of the merged ECRP rather than each
individual plan, which will lower Exelon’s 2019 pre-tax pension cost by approximately $ 90 million. 

Winter Storm-Related Costs

During  March  2018  there  were  powerful  nor'easter  storms  that  brought  a  mix  of  heavy  snow,  ice  and  high  sustained  winds  and  gusts  to  the  region  that
interrupted electric service delivery to customers in PECO's, BGE's, Pepco's, DPL's and ACE's service territories. Restoration efforts included significant costs
associated  with  employee  overtime,  support  from  other  utilities  and  incremental  equipment,  contracted  tree  trimming  crews  and  supplies,  which  resulted  in
incremental operating and maintenance expense and incremental capital expenditures in the first quarter of 2018 for PECO, BGE, PHI, Pepco, DPL and ACE. In
addition, PHI, Pepco, DPL and ACE recorded regulatory assets for amounts that are probable of recovery through customer rates. The impacts recorded by the
Registrants for the twelve months ended December 31, 2018 are presented below:

Exelon

PECO

BGE

PHI (a)

Pepco

DPL

Customer Outages

Incremental Operating & Maintenance

Incremental Capital Expenditures

(in millions)

1,727,000  

$

750,000  

425,000  

552,000  

182,000  

138,000  

88 (b)   $
53  

31  

4 (b)  

2 (b)  

2 (b)  

85

34

16

35

4

4

ACE
________
(a) PHI reflects the consolidated customer outages, incremental operating & maintenance and incremental capital expenditures of Pepco, DPL and ACE.
(b) Excludes amounts that were deferred and recognized as regulatory assets at Exelon, PHI, Pepco, DPL and ACE of $27 million, $27 million, $5 million, $1 million and $21

— (b)  

27

232,000  

million, respectively.

Westinghouse Electric Company LLC Bankruptcy

On March 29, 2017, Westinghouse Electric Company LLC (Westinghouse) and its affiliated debtors filed petitions for relief under Chapter 11 of the Bankruptcy
Code in the U.S. Bankruptcy Court for the Southern District of New York. On January 4, 2018, Westinghouse announced its agreement to be purchased by an
affiliate of Brookfield Business Partners, LLC (Brookfield) for approximately $4.6 billion. On March 28, 2018, the Bankruptcy Court entered an Order confirming
the Debtor's Second Amended Joint Plan of Reorganization which provides for the transaction with Brookfield. The transaction closed on August 1, 2018. Exelon
had contracts with Westinghouse primarily related to Generation's purchase of nuclear fuel, as well as a variety of services and equipment purchases associated
with  the  operation  and  maintenance  of  nuclear  generating  stations.  In  conjunction  with  the  confirmation  hearing,  Exelon  had  filed  a  reservation  of  rights
regarding  reorganizing  Westinghouse's  assumption  of  all  Exelon  contracts.  Exelon  reached  an  agreement  with  Brookfield,  and  all  Exelon  contracts  were
assumed by Brookfield on the closing date.

Exelon’s Strategy and Outlook for 2019 and Beyond

Exelon’s  value  proposition  and  competitive  advantage  come  from  its  scope  and  its  core  strengths  of  operational  excellence  and  financial  discipline.  Exelon
leverages its integrated business model to create value. Exelon’s regulated and competitive businesses feature a mix of attributes that, when combined, offer
shareholders and customers a unique value proposition:

•

The Utility Registrants provide a foundation for steadily growing earnings, which translates to a stable currency in our stock.

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•

Generation’s  competitive  businesses  provide  free  cash  flow  to  invest  primarily  in  the  utilities  and  in  long-term,  contracted  assets  and  to  reduce
debt.

Exelon believes its strategy provides a platform for optimal success in an energy industry experiencing fundamental and sweeping change.

Exelon’s  utility  strategy  is  to  improve  reliability  and  operations  and  enhance  the  customer  experience,  while  ensuring  ratemaking  mechanisms  provide  the
utilities fair financial returns. The Utility Registrants only invest in rate base where it provides a benefit to customers and the community by improving reliability
and the service experience or otherwise meeting customer needs. The Utility Registrants make these investments at the lowest reasonable cost to customers.
Exelon seeks to leverage its scale and expertise across the utilities platform through enhanced standardization and sharing of resources and best practices to
achieve improved operational and financial results. Additionally, the Utility Registrants anticipate making significant future investments in smart grid technology,
transmission projects, gas infrastructure, and electric system improvement projects, providing greater reliability and improved service for our customers and a
stable return for the company.

Generation’s competitive businesses create value for customers by providing innovative energy solutions and reliable, clean and affordable energy. Generation’s
electricity generation strategy is to pursue opportunities that provide stable revenues and generation to load matching to reduce earnings volatility. Generation
leverages  its energy  generation  portfolio  to deliver energy  to both  wholesale  and  retail customers.  Generation’s  customer-facing  activities  foster  development
and delivery of other innovative energy-related products and services for its customers. Generation operates in well-developed energy markets and employs an
integrated  hedging  strategy  to  manage  commodity  price  volatility.  Its  generation  fleet,  including  its  nuclear  plants  which  consistently  operate  at  high  capacity
factors,  also provide  geographic  and  supply source  diversity. These  factors  help Generation  mitigate  the  current  challenging  conditions  in competitive  energy
markets.

Exelon’s financial priorities are to maintain investment grade credit metrics at each of the Registrants, to maintain optimal capital structure and to return value to
Exelon’s  shareholders  with  an  attractive  dividend  throughout  the  energy  commodity  market  cycle  and  through  stable  earnings  growth.  Exelon’s  Board  of
Directors approved a dividend policy providing a raise of 5% each year for the period covering 2018 through 2020, beginning with the March 2018 dividend.

Various  market,  financial,  regulatory,  legislative  and  operational  factors  could  affect  the  Registrants'  success  in pursuing  their  strategies.  Exelon  continues  to
assess  infrastructure,  operational,  commercial,  policy,  and  legal  solutions  to  these  issues.  One  key  issue  is  ensuring  the  ability  to  properly  value  nuclear
generation  assets  in  the  market,  solutions  to  which  Exelon  is  actively  pursuing  in  a  variety  of  jurisdictions  and  venues.  See  ITEM  1A.  RISK  FACTORS  for
additional information regarding market and financial factors.

Continually optimizing the cost structure  is a key component  of Exelon’s financial strategy.   In August  2015, Exelon  announced  a cost  management  program
focused on cost savings of approximately $400 million at BSC and Generation, which was fully realized in 2018.  Approximately 75% of the savings were related
to Generation, with the remaining amount related to the Utility Registrants. In November 2017, Exelon announced a commitment for an additional $250 million of
cost savings, primarily at Generation, to be achieved by 2020. In November 2018, Exelon announced the elimination of an approximately additional $200 million
of annual ongoing costs, through initiatives primarily at Generation and BSC, by 2021. Approximately $150 million is expected to be related to Generation, with
the remaining amount related to the Utility Registrants. These actions are in response to the continuing economic challenges confronting all parts of Exelon’s
business and industry, necessitating continued focus on cost management through enhanced efficiency and productivity.

Growth Opportunities

Management continually evaluates growth opportunities aligned with Exelon’s businesses, assets and markets, leveraging Exelon’s expertise in those areas and
offering sustainable returns.

Regulated Energy Businesses. The PHI merger enhances Exelon’s regulated growth to provide stable cash flows, earnings accretion, and dividend support. 
Additionally, the Utility Registrants anticipate investing approximately $29 billion over the next five years in electric and natural gas infrastructure improvements
and modernization projects, including smart grid technology, storm hardening, advanced reliability technologies, and transmission projects, which is projected to
result  in  an  increase  to  current  rate  base  of  approximately  $16  billion  by  the  end  of  2023.  The  Utility  Registrants  invest  in  rate  base  where  beneficial  to
customers and the community by

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increasing reliability and the service experience or otherwise meeting customer needs. These investments are made at the lowest reasonable cost to customers.

See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information on the Smart Meter and Smart Grid
Investments and infrastructure development and enhancement programs.

Competitive  Energy  Businesses.  Generation  continually  assesses  the  optimal  structure  and  composition  of  its  generation  assets  as  well  as  explores
wholesale and retail opportunities within the power and gas sectors. Generation’s long-term growth strategy is to ensure appropriate valuation of its generation
assets,  in  part  through  public  policy  efforts,  identify  and  capitalize  on  opportunities  that  provide  generation  to  load  matching  as  a  means  to  provide  stable
earnings, and identify emerging technologies where strategic investments provide the option for significant future growth or influence in market development.

Liquidity Considerations

Each of the Registrants annually evaluates its financing plan, dividend practices and credit line sizing, focusing on maintaining its investment grade ratings while
meeting its cash needs to fund capital requirements, retire debt, pay dividends, fund pension and OPEB obligations and invest in new and existing ventures. A
broad spectrum of financing alternatives beyond the core financing options can be used to meet its needs and fund growth including monetizing assets in the
portfolio via project financing, asset sales, and the use of other financing structures (e.g., joint ventures, minority partners, etc.). The Registrants expect cash
flows to be sufficient to meet operating expenses, financing costs and capital expenditure requirements.

Exelon, Generation, ComEd, PECO, BGE, Pepco, DPL and ACE have unsecured syndicated revolving credit facilities with aggregate bank commitments of $0.6
billion , $5.3 billion , $1.0 billion , $0.6 billion , $0.6 billion , $0.3 billion , $0.3 billion and $0.3 billion , respectively. Generation also has bilateral credit facilities
with aggregate maximum availability of $0.5 billion . See Liquidity and Capital Resources — Credit Matters — Exelon Credit Facilities below and Note 13 — Debt
and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information.

For additional information regarding the Registrants' liquidity for the year ended December 31, 2018 , see Liquidity and Capital Resources discussion below.

Project Financing

Project financing is used to help mitigate risk of specific generating assets. Project financing is based upon a nonrecourse financial structure, in which project
debt is paid back from the cash generated by the specific asset or portfolio of assets. Borrowings under these agreements are secured by the assets and equity
of each respective project. The lenders do not have recourse against Exelon or Generation in the event of a default. If a specific project financing entity does not
maintain compliance with its specific debt financing covenants, there could be a requirement to accelerate repayment of the associated debt or other project-
related borrowings earlier than the stated maturity dates. In these instances, if such repayment was not satisfied, or restructured, the lenders or security holders
would generally have rights to foreclose against the project-specific assets and related collateral. The potential requirement to satisfy its associated debt or other
borrowings  earlier  than  otherwise  anticipated  could  lead  to  impairments  due  to  a  higher  likelihood  of  disposing  of  the  respective  project-specific  assets
significantly before the end of their useful lives. Additionally, project finance has credit facilities of $0.2 billion as of December 31, 2018. See Note 13 — Debt and
Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information on nonrecourse debt.

Other Key Business Drivers and Management Strategies

Utility Rates and Rate Proceedings

The Utility Registrants file rate cases with their regulatory commissions seeking increases or decreases to their electric transmission and distribution, and gas
distribution rates to recover their costs and earn a fair return on their investments. The outcomes of these regulatory proceedings impact the Utility Registrants’
current and future results

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of operations, cash flows and financial positions. See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional
information on these regulatory proceedings.

Power Markets

Price of Fuels

The  use  of  new  technologies  to  recover  natural  gas  from  shale  deposits  is  increasing  natural  gas  supply  and  reserves,  which  places  downward  pressure  on
natural  gas  prices  and,  therefore,  on  wholesale  and  retail  power  prices,  which  results  in  a  reduction  in  Exelon’s  revenues.  Forward  natural  gas  prices  have
declined significantly over the last several years; in part reflecting an increase in supply due to strong natural gas production (due to shale gas development).

FERC Inquiry on Resiliency

On August 23, 2017, the DOE staff released its report on the reliability of the electric grid. One aspect of the wide-ranging report is the DOE’s recognition that
the electricity markets do not currently value the resiliency provided by base-load generation, such as nuclear plants. On September 28, 2017, the DOE issued a
Notice  of  Proposed  Rulemaking  (NOPR)  that  would  entitle  certain  eligible  resilient  generating  units  (i.e.,  those  located  in  organized  markets,  with  a  90-day
supply of fuel on site, not already subject to state cost of service regulation and satisfying certain other requirements) to recover fully allocated costs and earn a
fair return on equity on their investment. On January 8, 2018, FERC issued an order terminating the rulemaking docket that it initiated to address the proposed
rule  in  the  DOE  NOPR,  concluding  the  proposed  rule  did  not  sufficiently  demonstrate  there  is  a  resiliency  issue  and  that  it  proposed  a  remedy  that  did  not
appear to be just, reasonable and nondiscriminatory as required under the Federal Power Act. At the same time, FERC initiated a new proceeding to consider
resiliency challenges to the bulk power system and evaluate whether additional FERC action to address resiliency would be appropriate. FERC directed each
RTO  and  ISO  to  respond  within  60  days  to  24  specific  questions  about  how  they  assess  and  mitigate  threats  to  resiliency.  Thereafter,  interested  parties
submitted reply comments on May 9, 2018, and a few parties submitted further replies. Exelon has been and will continue to be an active participant in these
proceedings but cannot predict the final outcome or its potential financial impact, if any, on Exelon or Generation.

Complaints and PJM Filing at FERC Seeking to Mitigate ZEC Programs

PJM and  NYISO capacity  markets  include a Minimum Offer  Price Rule (MOPR) that  is intended  to  preclude  buyers  from exercising  buyer  market  power.  If a
resource is subjected to a MOPR, its offer is adjusted to effectively remove the revenues it receives through a government-provided financial support program -
resulting in a higher offer that may not clear the capacity market. Currently, the MOPRs in PJM and NYISO apply only to certain new gas-fired resources.

On  January  9,  2017,  EPSA  filed  two  requests  with  FERC:  one  seeking  to  amend  a  prior  complaint  against  PJM  and  another  seeking  expedited  action  on  a
pending  NYISO  compliance  filing  in  an  existing  proceeding.  A  similar  complaint  also  against  PJM  was  filed  at  FERC  on  May  31,  2018.  These  complaints
generally allege that the relevant MOPR should be expanded to also apply to existing resources including those receiving ZEC compensation under the New
York CES and Illinois ZES programs. Exelon filed protests at FERC in response to each filing, arguing generally that ZEC payments provide compensation for
an  environmental  attribute  that  is  distinct  from  the  energy  and  capacity  sold  in  the  FERC-jurisdictional  markets,  and  therefore,  are  no  different  than  other
renewable support programs like the PTC and RPS programs that have generally not been subject to a MOPR. However, if successful, for Generation’s facilities
in  PJM  and  NYISO  that  are  currently  receiving  ZEC  compensation  (Quad  Cities,  Ginna,  Fitzpatrick  and  Nine  Mile  Point),  an  expanded  MOPR  could  require
exclusion  of  ZEC  compensation  when  bidding  into  future  capacity  auctions  such  that  these  facilities  would  have  an  increased  risk  of  not  clearing  in  future
capacity auctions and thus no longer receiving capacity revenues during the respective ZEC programs. Any mitigation of these generating resources could have
a  material  effect  on  Exelon’s  and  Generation’s  future  cash  flows  and  results  of  operations.  The  same  risk  would  also  exist  for  the  Salem  facility  if  Salem  is
selected as an eligible facility under the New Jersey ZEC program.

Separately,  PJM  submitted  two  proposed  alternative  capacity  market  reforms  in  April  2018  for  FERC’s  consideration.  PJM  argued  that  either  alternative  will
resolve  any  conflict  between  state  policy  support  for  certain  resources  and  the  need  to  ensure  reasonable  prices  for  non-supported  resources.  The  first
alternative was to implement a twice-run capacity clearing mechanism (known as the repricing proposal) and, if not acceptable to FERC, a second

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alternative that would expand the existing MOPR to both new and existing generating resources, subject to certain exemptions (known as MOPREx).

In June 2018, FERC issued an order rejecting both of PJM’s proposed alternatives, finding both to be unjust and unreasonable. In the same order, FERC also
addressed  one  of  the  MOPR  complaints  involving  PJM  and  concluded  based  on  that  complaint  and  PJM’s  filing  that  PJM’s  existing  tariff  allows  resources
receiving out-of-market support to affect capacity prices in a manner that will cause unjust and unreasonable and unduly discriminatory rates in PJM regardless
of the intent motivating the support. FERC suggested that modifying two elements of PJM’s existing tariff could produce a just and reasonable replacement and
asked for initial comments on its proposal by August 28, 2018, later extended to October 2, 2018. First, FERC found that an expansion of the current MOPR
mechanism to cover all existing generating resources, regardless of resource type, including those receiving either ZEC or REC compensation, could protect the
capacity markets from unwanted price suppression. Second, FERC preliminarily found that a modified version of PJM’s existing Fixed Resource Requirement
(FRR)  option  could  enable  state  subsidized  resources  and  a  corresponding  amount  of  load  to  be  removed  from  the  capacity  market,  thereby  alleviating  their
price  suppressive  effects  on  capacity  clearing  prices.  Under  this  alternative,  state  supported  generating  resources  would  potentially  be  compensated  through
mechanisms  other  than  through  PJM’s  existing  market  mechanism.  FERC  established  March  21,  2016  as  the  refund  effective  date  and  also  allowed  PJM  to
delay  its  next  capacity  auction  from  May  2019  to  August  2019  to  allow  parties  time  to  develop  and  file  proposals  in  the  FERC  proceeding,  FERC  time  to
determine  the  appropriate  solution  and  PJM  time  to  implement  FERC's  solution.  On  October  2,  2018,  Exelon,  along  with  several  ratepayer  advocates,
environmental organizations and other nuclear generators, submitted shared principles supporting a workable new FRR mechanism (as suggested by FERC)
and  detailing  how  such  a  mechanism  should  be  implemented.  Exelon  also  submitted  individual  comments  covering  matters  not  addressed  in  the  shared
principles. FERC has not yet issued a decision on the second MOPR complaint involving PJM or the MOPR complaint involving NYISO. It is too early to predict
the final outcome of each of these proceedings or their potential financial impact, if any, on Exelon or Generation.

Section 232 Uranium Petition

On  January  16,  2018,  two  Canadian-owned  uranium  mining  companies  with  operations  in  the  U.S.  jointly  submitted  a  petition  to  the  U.S.  Department  of
Commerce  (DOC)  seeking  relief  under  Section  232  of  the  Trade  Expansion  Act  of  1962  (as  amended)  from  imports  of  uranium  products,  alleging  that  these
imports threaten national security (the Petition). The Trade Expansion Act of 1962 (the Act) was promulgated by Congress to protect essential national security
industries whose survival is threatened by imports. As such, the Act authorizes the Secretary of Commerce (the Secretary) to conduct investigations to evaluate
the effects of imports of any item on the national security of the U.S. The Petition alleges that the loss of a viable U.S. uranium mining industry would have a
significant detrimental impact on the national, energy, and economic security of the U.S. and the ability of the country to sustain an independent nuclear fuel
cycle.

On July 18, 2018, the Secretary announced that the DOC has initiated an investigation in response to the petition. The Secretary has 270 days to prepare and
submit  a  report  to  President  Trump,  who  then  has  90  days  to  act  on  the  Secretary's  recommendations.  Exelon  and  Generation  cannot  currently  predict  the
outcome  of  this  investigation.  The  relief  sought  by  the  petitioners  would  require  U.S.  nuclear  reactors  to  purchase  at  least  25%  of  their  uranium  needs  from
domestic mines over the next 10 years, although the DOC will make an independent determination regarding an appropriate remedy should it find that imports
impair  national  security.  It  is  reasonably  possible  that  if  this  petition  is  successful  the  resulting  increase  in  nuclear  fuel  costs  in  future  periods  could  have  a
material, unfavorable impact on Exelon’s and Generation’s financial statements.

Potential DOE Order Pursuant to Defense Production Act and Federal Power Act

The DOE is considering an Order directing ISOs, for 24 months, to purchase electric energy or generation capacity from a designated list of coal and nuclear
generation facilities. Based on a draft memorandum, the Order would be pursuant to DOE's authorities under the Defense Production Act and Federal Power
Act, and would forestall any further actions towards retiring, decommissioning, or deactivating coal and nuclear facilities during the term of the Order. The Order
would emphasize the importance of grid resiliency, in addition to grid reliability, noting that fuel security and diversity are critical components of resiliency. The
DOE recognizes that the underlying economic and regulatory issues are complex and will take time resolve. The Order's 24-month duration would enable DOE
to  conduct  additional  analyses  to  gain  a  detailed  understanding  of  location-specific  vulnerabilities  in  U.S.  energy  delivery  systems,  while  preserving  certain
generation facilities. Exelon has been and will continue to be an active

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participant in these proceedings but cannot predict the final outcome or its potential financial impact, if any, on Exelon or Generation.

Energy Demand

Modest economic growth partially offset by energy efficiency initiatives is resulting in relatively flat load growth in electricity for the Utility Registrants. ComEd,
BGE, Pepco, DPL and ACE are projecting load volumes to increase (decrease) by (0.2)% , (0.1)% , 0.3% , (0.3)% and (1.5)% , respectively, in 2019 compared
to 2018 . PECO is projecting load volumes to be flat in 2019 compared to 2018 .

Retail Competition

Generation’s retail operations compete for customers in a competitive environment, which affect the margins that Generation can earn and the volumes that it is
able  to  serve.  Forward  natural  gas  and  power  prices  are  expected  to  remain  low  and  thus  we  expect  retail  competitors  to  stay  aggressive  in  their  pursuit  of
market share, and that wholesale generators (including Generation) will continue to use their retail operations to hedge generation output.

Strategic Policy Alignment

As  part  of  its  strategic  business  planning  process,  Exelon  routinely  reviews  its  hedging  policy,  dividend  policy,  operating  and  capital  costs,  capital  spending
plans, strength of its balance sheet and credit metrics, and sufficiency of its liquidity position, by performing various stress tests with differing variables, such as
commodity price movements, increases in margin-related transactions, changes in hedging practices, and the impacts of hypothetical credit downgrades.

Exelon's Board of Directors declared first, second, third and fourth quarter 2018 dividends of $0.3450 per share each on Exelon's common stock, and the first
quarter 2019 dividends declared was $0.3625 . The dividends for the first, second, third and fourth quarter 2018 were paid on March 9, 2018 , June 8, 2018 ,
September 10, 2018 and December 10, 2018 , respectively. The first quarter 2019 dividend is payable on March 8, 2019 .

Exelon’s Board of Directors approved an updated dividend policy providing an increase of 5% each year for the period covering 2018 through 2020, beginning
with the March 2018 dividend.

Hedging Strategy

Exelon’s  policy  to  hedge  commodity  risk  on  a  ratable  basis  over  three-year  periods  is  intended  to  reduce  the  financial  impact  of  market  price  volatility.
Generation  is  exposed  to  commodity  price  risk  associated  with  the  unhedged  portion  of  its  electricity  portfolio.  Generation  enters  into  non-derivative  and
derivative contracts, including financially-settled swaps, futures contracts and swap options, and physical options and physical forward contracts, all with credit-
approved counterparties, to hedge this anticipated exposure. Generation has hedges in place that significantly mitigate this risk for 2019 and 2020 . However,
Generation  is  exposed  to  relatively  greater  commodity  price  risk  in  the  subsequent  years  with  respect  to  which  a  larger  portion  of  its  electricity  portfolio  is
currently unhedged. As of December 31, 2018 , the percentage of expected generation hedged for the Mid-Atlantic, Midwest, New York and ERCOT reportable
segments is 89% - 92% , 56% - 59% and 32% - 35% for 2019 , 2020 , and 2021 respectively. The percentage of expected generation hedged is the amount of
equivalent  sales  divided  by  the  expected  generation.  Expected  generation  is  the  volume  of  energy  that  best  represents  our  commodity  position  in  energy
markets  from  owned  or  contracted  generating  facilities  based  upon  a  simulated  dispatch  model  that  makes  assumptions  regarding  future  market  conditions,
which are calibrated to market quotes for power, fuel, load following products, and options. Equivalent sales represent all hedging products, such as wholesale
and retail sales of power, options and swaps. Generation has been and will continue to be proactive in using hedging strategies to mitigate commodity price risk
in subsequent years as well.

Generation procures oil and natural gas through long-term and short-term contracts and spot-market purchases. Nuclear fuel is obtained predominantly through
long-term uranium concentrate supply contracts, contracted conversion services, contracted enrichment services, or a combination thereof, and contracted fuel
fabrication services. The supply markets for uranium concentrates and certain nuclear fuel services, coal, oil and natural gas are subject to price fluctuations and
availability restrictions. Supply market conditions may make Generation’s procurement contracts subject to credit risk related to the potential non-performance of
counterparties to deliver the contracted commodity or service at the contracted prices. Approximately  62% of Generation’s uranium concentrate requirements
from 2019 through 2023 are supplied by three producers. In the event of non-performance by these

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or other suppliers, Generation believes that replacement uranium concentrate can be obtained, although at prices that may be unfavorable when compared to
the prices under the current supply agreements. Non-performance by these counterparties could have a material adverse impact on Exelon’s and Generation’s
results of operations, cash flows and financial positions.

The Utility Registrants mitigate commodity price risk through regulatory mechanisms that allow them to recover procurement costs from retail customers.

Environmental Legislative and Regulatory Developments

Exelon was actively involved in the Obama Administration’s development and implementation of environmental regulations for the electric industry, in pursuit of
its  business  strategy  to  provide  reliable,  clean,  affordable  and  innovative  energy  products.  These  efforts  have  most  frequently  involved  air,  water  and  waste
controls for fossil-fueled electric generating units, as set forth in the discussion below. These regulations have had a disproportionate adverse impact on coal-
fired power plants, requiring significant expenditures of capital and variable operating and maintenance expense, and have resulted in the retirement of older,
marginal facilities. Due to its low emission generation portfolio, Generation has not been significantly affected by these regulations, representing a competitive
advantage relative to electric generators that are more reliant on fossil fuel plants.

Through the issuance of a series of Executive Orders (EO), President Trump has initiated review of a number of EPA and other regulations issued during the
Obama  Administration,  with  the  expectation  that  the  Administration  will  seek  repeal  or  significant  revision  of  these  rules.  Under  these  EOs,  each  executive
agency is required to evaluate existing regulations and make recommendations regarding repeal, replacement, or modification. The Administration’s actions are
intended  to  result  in  less  stringent  compliance  requirements  under  air,  water,  and  waste  regulations.  The  exact  nature,  extent,  and  timing  of  the  regulatory
changes are unknown, as well as the ultimate impact on Exelon’s and its subsidiaries results of operations and cash flows.

In particular, the Administration has targeted existing EPA regulations for repeal, including notably the Clean Power Plan, as well as revoking many Executive
Orders, reports, and guidance issued by the Obama Administration on the topic of climate change or the regulation of greenhouse gases. The Executive Order
also  disbanded  the  Interagency  Working  Group  that  developed  the  social  cost  of  carbon  used  in  rulemakings,  and  withdrew  all  technical  support  documents
supporting the calculation. Other regulations that have been specifically identified for review are the Clean Water Act rule relating to jurisdictional waters of the
U.S., the Steam Electric Effluent Guidelines relating to waste water discharges from coal-fired power plants, and the 2015 National Ambient Air Quality Standard
(NAAQS) for ozone. The review of final rules could extend over several years as formal notice and comment rulemaking process proceeds.

Air Quality

Mercury and Air Toxics Standard Rule (MATS). On December 16, 2011, the EPA signed a final rule to reduce emissions of toxic air pollutants from power
plants and signed revisions to the NSPS for electric generating units. The final rule, known as MATS, requires coal-fired electric generation plants to achieve
high  removal  rates  of  mercury,  acid  gases  and  other  metals,  and  to  make  capital  investments  in  pollution  control  equipment  and  incur  higher  operating
expenses. The initial compliance deadline to meet the new standards was April 16, 2015; however, facilities may have been granted an additional one or two-
year extension in limited cases. Numerous entities challenged MATS in the D.C. Circuit Court, and Exelon intervened in support of the rule. In April 2014, the
D.C.  Circuit  Court  issued  an  opinion  upholding  MATS  in  its  entirety.  On  appeal,  the  U.S.  Supreme  Court  decided  in  June  2015  that  the  EPA  unreasonably
refused  to  consider  costs  in  determining  whether  it  is  appropriate  and  necessary  to  regulate  hazardous  air  pollutants  emitted  by  electric  utilities.  The  U.S.
Supreme  Court,  however,  did  not  vacate  the  rule;  rather,  it  was  remanded  to  the  D.C.  Circuit  Court  to  take  further  action  consistent  with  the  U.S.  Supreme
Court’s opinion on this single issue. On April 27, 2017, the D.C. Circuit granted  EPA’s motion to hold the litigation in abeyance, pending EPA’s review of the
MATS rule pursuant to President Trump’s EO discussed above. Following EPA’s review and determination of its course of action for the MATS rule, the parties
will have 30 days to file motions on future proceedings. Notwithstanding the Court’s order to hold the litigation in abeyance, the MATS rule remains in effect.
Exelon will continue to participate in the remanded proceedings before the D.C. Circuit Court as an intervenor in support of the rule. On December 28, 2018, the
EPA proposed to revoke the "appropriate and necessary" finding underpinning the MATS rule. While the proposal would leave in place the rule, it would leave it
vulnerable to future legal challenge.

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Clean Power Plan. On April 28, 2017, the D.C. Circuit Court issued orders in separate litigation related to the EPA’s actions under the Clean Power Plan (CPP)
to  amend  Clean  Air  Act  Section  111(d)  regulation  of  existing  fossil-fired  electric  generating  units  and  Section  111(b)  regulation  of  new  fossil-fired  electric
generating units. In both cases, the Court has determined to hold the litigation in abeyance pending a determination whether the rule should be remanded to the
EPA. On October 10, 2017, EPA issued a proposed rule to repeal the CPP in its entirety, based on a proposed change in the Agency’s legal interpretation of
Clean Air Act Section 111(d) regarding actions that the Agency can consider when establishing the Best System of Emission Reduction (“BSER”) for existing
power  plants.  Under  the  proposed  interpretation,  the  Agency  exceeded  its  authority  under  the  Clean  Air  Act  by  regulating  beyond  individual  sources  of  GHG
emissions.  Subsequently,  on  August  31,  2018,  EPA  proposed  its  Affordable  Clean  Energy  Rule  (ACE),  which  would  replace  the  CPP  with  revised  emission
guidelines based on heat rate improvement measures that could be achieved within the fence line of existing power plants.

2015  Ozone  National  Ambient  Air  Quality  Standards  (NAAQS).  On  April  11,  2017,  the  D.C.  Circuit  ordered  that  the  consolidated  2015  ozone  NAAQS
litigation be held in abeyance pending EPA’s further review of the 2015 Rule. EPA did not meet the October 1, 2017 deadline to promulgate initial designations
for areas in attainment or non-attainment of the standard. A number of states and environmental organizations have notified the EPA of their intent to file suit to
compel EPA to issue the designations.

Climate  Change.  Exelon  supports  comprehensive  climate  change  legislation  or  regulation,  including  a  cap-and-trade  program  for  GHG  emissions,  which
balances  the  need  to  protect  consumers,  business  and  the  economy  with  the  urgent  need  to  reduce  national  GHG  emissions.  In  the  absence  of  Federal
legislation, the EPA is moving forward with the regulation of GHG emissions under the Clean Air Act. In addition, there have been recent developments in the
international regulation of GHG emissions pursuant to the United Nations Framework Convention on Climate Change (“UNFCCC” or “Convention”). See ITEM 1.
BUSINESS , "Global Climate Change" for additional information.

Water Quality

Section 316(b) requires that the cooling water intake structures at electric power plants reflect the best technology available to minimize adverse environmental
impacts and is implemented through state-level NPDES permit programs. All of Generation’s power generation facilities with cooling water systems are subject
to the regulations. Facilities without closed-cycle recirculating systems (e.g., cooling towers) are potentially most affected by recent changes to the regulations.
For Generation, those facilities are Calvert Cliffs, Clinton, Dresden, Eddystone, Fairless Hills, FitzPatrick, Ginna, Gould Street, Handley, Mystic 7, Nine Mile Point
Unit 1, Peach Bottom, Quad Cities, and Salem. See ITEM 1. BUSINESS , "Water Quality" for additional information.

Solid and Hazardous Waste

In October 2015, the first federal regulation for the disposal of coal combustion residuals (CCR) from power plants became effective. The rule classifies CCR as
non-hazardous waste under RCRA. Under the regulation, CCR will continue to be regulated by most states subject to coordination with the federal regulations.
Generation has previously recorded accruals consistent with state regulation for its owned coal ash sites, and as such, the regulation is not expected to impact
Exelon’s and Generation’s financial results. Generation does not have sufficient information to reasonably assess the potential likelihood or magnitude of any
remediation requirements that may be asserted under the new federal regulations for coal ash disposal sites formerly owned by Generation. For these reasons,
Generation is unable to predict whether and to what extent it may ultimately be held responsible for remediation and other costs relating to formerly owned coal
ash disposal sites under the new regulations.

See  Note  22  —  Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  related  to
environmental matters, including the impact of environmental regulation.

Other Legislative and Regulatory Developments

Delaware Distribution System Investment Charge

On June 14, 2018, the Governor of Delaware signed new Distribution System Investment Charge (DSIC) legislation, which establishes a system improvement
charge  that  provides  a  mechanism  to  recover  infrastructure  investments,  allowing  for  gradual  rate  increases  and  limiting  frequency  of  distribution  base  rate
cases. On November 30, 2018, DPL filed its first electric and gas filing in Delaware with the new rates being put into effect on January 1, 2019. This legislation
supports needed infrastructure investment and allows for more timely recovery of those investments, however Exelon, PHI and DPL do not expect a material
impact on the financial statements.

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Pennsylvania Alternative Ratemaking

On June 28, 2018, the Governor of Pennsylvania signed Act 58 of 2018, which authorizes the PAPUC to review and approve utility-proposed alternative rate
mechanisms, including options such as decoupling mechanisms, formula rates, multi-year rate plans, and performance based rates. Exelon and PECO cannot
predict the outcome or the potential financial impact, if any, on Exelon or PECO.

District of Columbia Clean Energy Bill

On December 18, 2018, the Council of the District of Columbia passed the Clean Energy District of Columbia Omnibus Amendment Act of 2018 (the Act), which
was  subsequently  signed  by  the  Mayor  of  the  District  of  Columbia  on  January  18,  2019.    The  Act  is  expected  to  take  effect  in  February  2019  following  the
expiration of a 30-day review process by the U.S. House of Representatives.  Among other things, the Act would increase electric load by requiring all public
buses, taxis and other specified fleets to be solely zero-emissions vehicles by 2045.  The Act would also clarify that, under certain circumstances, the gas and
electric utilities may offer and receive cost recovery including a return on investment on capital and related costs for energy efficiency programs in the District of
Columbia.

Employees

In  January  2017,  an  election  was  held  at  BGE  which  resulted  in  union  representation  for  approximately  1,284  employees.  BGE  and  IBEW  Local  410  are
negotiating  an  initial  agreement  which  could  result  in  some  modifications  to  wages,  hours  and  other  terms  and  conditions  of  employment.  Negotiations  have
been productive and continue. No agreement has been finalized to date and management cannot predict the outcome of such negotiations. Negotiations that
began in 2017 for a first collective bargaining agreement with a small unit of employees represented by Local 501 of Operating Engineers at Exelon’s Hyperion
Solutions facility are complete and the new CBA will expire in 2021. During 2017, Generation finalized CBAs with the Security Officer unions at LaSalle, Limerick
and  Quad  Cities,  which  all  will  expire  in  2020  and  Dresden  expiring  in  2021.  Additionally,  during  2017,  Generation  acquired  and  combined  two  CBAs  at
Fitzpatrick into one CBA covering both craft and security employees, which will expire in 2023. Generation also successfully finalized the CBA with the IBEW
union  at  TMI,  which  will  expire  in  2022.  During  2018,  Generation  finalized  its  CBA  with  the  Security  Officer’s  union  at  Braidwood,  which  will  expire  in  2021.
Additionally, ACE successfully finalized two contract renewals with the IBEW Local 210, and the new BAs will expire in 2023. As previously reported, there was
an organizing effort over approximately 18 ACE control room System Operators. While an election was held with an outcome favorable to Local 210, collective
bargaining  over  this  small  segment  of  employees  will  not  commence  until  the  issue  of  whether  the  System  Operators  are  NLRA  statutory  supervisors  is
determined, and that matter is currently before the NLRB. Furthermore, there was an organizing effort at PECO over approximately 150 Working Foreperson
positions. In October 2018, the Working Foreperson group overwhelmingly rejected unionization in an election held by the NLRB. Lastly, on December 27, 2018
a representation petition was filed by the LEOSU Union seeking to represent security officers at Clinton Power station who are currently represented by SEIU
Local 1. The current collective bargaining agreement between Exelon Nuclear Security and the SEIU Local 1 has been extended, so that the matter between the
two rival labor organizations can be resolved. No election or determination has been held and it is anticipated that this matter will be resolved in 2019.

Critical Accounting Policies and Estimates

The preparation of financial statements in conformity with GAAP requires that management apply accounting policies and make estimates and assumptions that
affect  results  of  operations  and  the  amounts  of  assets  and  liabilities  reported  in  the  financial  statements.  Management  believes  that  the  accounting  policies
described below require significant judgment in their application, or incorporate estimates and assumptions that are inherently uncertain and that may change in
subsequent  periods.  Additional  information  of  the  application  of  these  accounting  policies  can  be  found  in  the  Combined  Notes  to  Consolidated  Financial
Statements.

Nuclear Decommissioning Asset Retirement Obligations (Exelon and Generation)

Generation’s  ARO  associated  with  decommissioning  its  nuclear  units  was  $10.0  billion  at  December  31,  2018  .  The  authoritative  guidance  requires  that
Generation  estimate  its  obligation  for  the  future  decommissioning  of  its  nuclear  generating  plants.  To  estimate  that  liability,  Generation  uses  an  internally-
developed, probability-weighted, discounted cash flow model which, on a unit-by-unit basis, considers multiple decommissioning outcome scenarios.

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As  a  result  of  recent  nuclear  plant  retirements  in  the  industry,  nuclear  operators  and  third-party  service  providers  are  obtaining  more  information  about  costs
associated  with decommissioning  activities. At the  same  time, regulators  are  gaining  more information  about  decommissioning  activities which could result  in
changes to existing decommissioning requirements. In addition, as more nuclear plants are retired, it is possible that technological advances will be identified
that could create efficiencies and lead to a reduction in decommissioning costs. The availability of NDT funds could impact the timing of the decommissioning
activities. Additionally, certain factors such as changes in regulatory requirements during plant operations or the profitability of a nuclear plant could impact the
timing of plant retirements. These factors could result in material changes to Generation’s current estimates as more information becomes available and could
change the timing of plant retirements and the probability assigned to the decommissioning outcome scenarios.

The nuclear decommissioning obligation is adjusted on a regular basis due to the passage of time and revisions to the key assumptions for the expected timing
and/or  estimated  amounts  of  the  future  undiscounted  cash  flows  required  to  decommission  the  nuclear  plants,  based  upon  the  following  methodologies  and
significant estimates and assumptions:

Decommissioning Cost Studies. Generation uses unit-by-unit decommissioning cost studies to provide a marketplace assessment of the expected costs (in
current year dollars) and timing of decommissioning activities, which are validated by comparison to current decommissioning projects within the industry and
other  estimates.  Decommissioning  cost  studies  are  updated,  on  a  rotational  basis,  for  each  of  Generation’s  nuclear  units  at  least  every  five  years,  unless
circumstances  warrant  more  frequent  updates.  As  part  of  the  annual  cost  study  update  process,  Generation  evaluates  newly  assumed  costs  or  substantive
changes in previously assumed costs to determine if the cost estimate impacts are sufficiently material to warrant application of the updated estimates to the
AROs across the nuclear fleet outside of the normal five-year rotating cost study update cycle.

Cost Escalation Factors. Generation  uses  cost  escalation  factors  to  escalate  the  decommissioning  costs  from  the  decommissioning  cost  studies  discussed
above  through  the  assumed  decommissioning  period  for  each  of  the  units.  Cost  escalation  studies,  updated  on  an  annual  basis,  are  used  to  determine
escalation factors, and are based on inflation indices for labor, equipment and materials, energy, LLRW disposal and other costs. All of the nuclear AROs are
adjusted each year for the updated cost escalation factors.

Probabilistic Cash Flow Models. Generation’s probabilistic cash flow models include the assignment of probabilities to various scenarios for decommissioning
cost levels, decommissioning approaches, and timing of plant shutdown on a unit-by-unit basis. Probabilities assigned to cost levels include an assessment of
the likelihood of costs 20% higher (high-cost scenario) or 15% lower (low-cost scenario) than the base cost scenario. The assumed decommissioning scenarios
include  the  following  three  alternatives:  (1)  DECON  which  assumes  decommissioning  activities  begin  shortly  after  the  cessation  of  operation,  (2)  Shortened
SAFSTOR  generally  has  a  30-year  delay  prior  to  onset  of  decommissioning  activities,  and  (3)  SAFSTOR  which  assumes  the  nuclear  facility  is  placed  and
maintained  in  such  condition  that  the  nuclear  facility  can  be  safely  stored  and  subsequently  decontaminated  generally  within  60  years  after  cessation  of
operations. In each decommissioning scenario, spent fuel is transferred to dry cask storage as soon as possible until DOE acceptance for disposal.

The  actual  decommissioning  approach  selected  once  a  nuclear  facility  is  shutdown  will  be  determined  by  Generation  at  the  time  of  shutdown  and  may  be
influenced by multiple factors including the funding status of the nuclear decommissioning trust fund at the time of shutdown.

The assumed plant shutdown timing scenarios include the following four alternatives: (1) the probability of operating through the original 40-year nuclear license
term, (2) the probability of operating through an extended 60-year nuclear license term (regardless of whether such 20-year license extension has been received
for each unit), (3) the probability of a second, 20-year license renewal for some nuclear units, and (4) the probability of early plant retirement for certain sites due
to changing market conditions and regulatory environments. The successful operation of nuclear plants in the U.S. beyond the initial 40-year license terms has
prompted the NRC to consider regulatory and technical requirements for potential plant operations for an 80-year nuclear operating term. As power market and
regulatory  environment  developments  occur,  Generation  evaluates  and  incorporates,  as  necessary,  the  impacts  of  such  developments  into  its  nuclear  ARO
assumptions and estimates.

Generation’s probabilistic cash flow models also include an assessment of the timing of DOE acceptance of SNF for disposal. Generation currently assumes
DOE will begin accepting SNF in 2030. The SNF acceptance date assumption is based on management’s estimates of the amount of time required for DOE to
select a site location

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and develop the necessary infrastructure for long-term SNF storage. For additional information regarding the estimated date that DOE will begin accepting SNF,
see Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements.

Discount Rates. The probability-weighted estimated future cash flows for the various assumed scenarios are discounted using credit-adjusted, risk-free rates
(CARFR) applicable to the various businesses in which each of the nuclear units originally operated. Generation initially recognizes an ARO at fair value and
subsequently adjusts it for changes to estimated costs, timing of future cash flows and modifications to decommissioning assumptions. The ARO is not required
or  permitted  to  be  re-measured  for  changes  in  the  CARFR  that  occur  in  isolation.  Increases  in  the  ARO  as  a  result  of  upward  revisions  in  estimated
undiscounted cash flows are considered new obligations and are measured using a current CARFR as the increase creates a new cost layer within the ARO.
Any decrease in the estimated undiscounted future cash flows relating to the ARO are treated as a modification of an existing ARO cost layer and, therefore, is
measured using the average historical CARFR rates used in creating the initial ARO cost layers. If Generation’s future nominal cash flows associated with the
ARO were to be discounted at current prevailing CARFR, the obligation would increase from approximately $10.0 billion to approximately $10.1 billion .

The following table illustrates the significant impact that changes in the CARFR, when combined with changes in projected amounts and expected timing of cash
flows, can have on the valuation of the ARO (dollars in millions):

Change in the CARFR applied to the annual ARO update

2017 CARFR rather than the 2018 CARFR

2018 CARFR increased by 50 basis points

2018 CARFR decreased by 50 basis points

Increase (Decrease) to ARO at 
December 31, 2018

$

50

(100)

130

ARO Sensitivities. Changes in the assumptions underlying the ARO could materially affect the decommissioning obligation. The impact to the ARO of a change
in any one of these assumptions is highly dependent on how the other assumptions may correspondingly change.

The following table illustrates the effects of changing certain ARO assumptions while holding all other assumptions constant (dollars in millions):

Change in ARO Assumption

Cost escalation studies

Uniform increase in escalation rates of 50 basis points

Probabilistic cash flow models

Increase the estimated costs to decommission the nuclear plants by 10 percent

Increase the likelihood of the DECON scenario by 10 percent and decrease the likelihood of the SAFSTOR scenario by 10
percent (a)
Shorten each unit's probability weighted operating life assumption by 10 percent (b)
Extend the estimated date for DOE acceptance of SNF to 2035
__________
(a)
(b)

Excludes any sites in which management has committed to a specific decommissioning approach.
Excludes any retired site or sites for which an early plant retirement has been announced.

Increase to ARO at 
December 31, 2018

$

1,530

650

410

720

90

See  Note  1 — Significant  Accounting  Policies  ,  Note  8 — Early  Plant  Retirements  and  Note  15 — Asset  Retirement  Obligations  of  the  Combined  Notes  to
Consolidated Financial Statements for additional information regarding accounting for nuclear decommissioning obligations.

Goodwill (Exelon, ComEd and PHI)

As of December  31,  2018  , Exelon’s $6.7 billion carrying  amount  of  goodwill  consists  of  $2.6 billion at ComEd, $4 billion at  PHI  and  immaterial  amounts  at
Generation and DPL. These entities are required to perform an assessment for possible impairment of their goodwill at least annually or more frequently if an
event occurs or circumstances

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change that would more likely than not reduce the fair value of the reporting units below their carrying amount. A reporting unit is an operating segment or one
level below an operating segment (known as a component) and is the level at which goodwill is tested for impairment. ComEd has a single operating segment
and reporting unit. PHI’s operating segments and reporting units are Pepco, DPL and ACE. See Note  24 — Segment Information of the Combined Notes to
Consolidated Financial Statements for additional information. Exelon's and ComEd’s goodwill has been assigned entirely to the ComEd reporting unit. Exelon's
and PHI’s goodwill has been assigned to the Pepco, DPL and ACE reporting units in the amounts of $2.1 billion , $1.4 billion and $0.5 billion , respectively. See
Note 10 — Intangible Assets of the Combined Notes to Consolidated Financial Statements for additional information.

Entities  assessing  goodwill  for  impairment  have  the  option  of  first  performing  a  qualitative  assessment  to  determine  whether  a  quantitative  assessment  is
necessary. As part of the qualitative assessments, Exelon, ComEd and PHI evaluate, among other things, management's best estimate of projected operating
and capital cash flows for their businesses, outcomes of recent regulatory proceedings, changes in certain market conditions, including the discount rate and
regulated utility peer EBITDA multiples, and the passing margin from their last quantitative assessments performed.

Exelon’s, ComEd’s and PHI’s accounting policy is to perform a quantitative test of goodwill at least once every three years, or more frequently if events occur or
circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying amount.

Application  of the  goodwill impairment  test requires  management  judgment,  including the identification  of reporting  units and determining  the fair value of the
reporting  unit,  which  management  estimates  using  a  weighted  combination  of  a  discounted  cash  flow  analysis  and  a  market  multiples  analysis.  Significant
assumptions used in these fair value analyses include discount and growth rates, utility sector market performance and transactions, projected operating and
capital cash flows for ComEd’s, Pepco's, DPL's and ACE's businesses and the fair value of debt. In applying the second step (if needed), management must
estimate the fair value of specific assets and liabilities of the reporting unit.

While  the  annual  assessments  indicated  no  impairments,  certain  assumptions  used  in  the  assessment  are  highly  sensitive  to  changes.  Adverse  regulatory
actions  or  changes  in  significant  assumptions  could  potentially  result  in  future  impairments  of  Exelon’s,  ComEd's  or  PHI’s  goodwill,  which  could  be  material.
Based on the results of the last annual quantitative goodwill tests performed as of November 1, 2016 and November 1, 2018 for ComEd and PHI, respectively,
the  estimated  fair  values  of  the  ComEd,  Pepco,  DPL  and  ACE  reporting  units  would  have  needed  to  decrease  by  more  than  30% , 30% , 20% and 30% ,
respectively, for ComEd and PHI to fail the first step of their respective impairment tests.

See Note 1 — Significant  Accounting  Policies  and Note 10 — Intangible Assets of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional
information.

Purchase Accounting (Exelon, Generation and PHI)

Assets acquired and liabilities assumed in an acquired business are recorded at their estimated fair values on the date of acquisition. The difference between the
purchase price amount and the net fair value of assets acquired and liabilities assumed is recognized as goodwill on the balance sheet if the purchase price
exceeds  the  estimated  net  fair  value  or  as  a  bargain  purchase  gain  on  the  income  statement  if  the  purchase  price  is  less  than  the  estimated  net  fair
value. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment, often utilizes independent valuation experts and
involves  the  use  of  significant  estimates  and  assumptions  with respect  to the  timing and  amounts  of  future  cash  inflows and  outflows,  discount  rates,  market
prices and asset lives, among other items. The judgments made in the determination of the estimated fair value assigned to the assets acquired and liabilities
assumed, as well as the estimated useful life of each asset and the duration of each liability, could significantly impact the financial statements in periods after
acquisition, such as through depreciation and amortization expense. The allocation of the purchase price may be modified up to one year after the acquisition
date as more information is obtained about the fair value of assets acquired and liabilities assumed. If the transaction is determined to be an asset acquisition
the purchase price is allocated to the assets acquired and the liabilities assumed and no goodwill or bargain purchase gain would be recorded.  See Note 5 —
Mergers, Acquisitions and Dispositions of the Combined Notes to Consolidated Financial Statements for additional information.

Unamortized Energy Contract Assets and Liabilities (Exelon, Generation and PHI)

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Unamortized  energy  contract  assets  and  liabilities  represent  the  remaining  unamortized  balances  of  non-derivative  energy  contracts  that  Generation  has
acquired and the electricity contracts Exelon has acquired as part of the PHI merger. The initial amount recorded represents the fair value of the contracts at the
time of acquisition. At Exelon and PHI, offsetting regulatory assets or liabilities were also recorded for those energy contract costs that are probable of recovery
or refund through customer rates. The unamortized energy contract assets and liabilities and any corresponding regulatory assets or liabilities, respectively, are
amortized over the life of the contract in relation to the expected realization of the underlying cash flows. Amortization of the unamortized energy contract assets
and liabilities is recorded through purchased power and fuel expense or operating revenues, depending on the nature of the underlying contract. See Note 4 —
Regulatory  Matters  ,  Note    5 — Mergers,  Acquisitions  and  Dispositions  and  Note  10 — Intangible  Assets  of  the  Combined  Notes  to  Consolidated  Financial
Statements for additional information.

Impairment of Long-lived Assets (All Registrants)

All  Registrants  regularly  monitor  and  evaluate  their  long-lived  assets  and  asset  groups,  excluding  goodwill,  for  impairment  when  circumstances  indicate  the
carrying  value  of  those  assets  may  not  be  recoverable.  Indicators  of  potential  impairment  may  include  a  deteriorating  business  climate,  including  declines  in
energy  prices,  condition  of  the  asset,  an  asset  remaining  idle  for  more  than  a  short  period  of  time,  specific  regulatory  disallowance,  advances  in  technology,
plans to dispose of a long-lived asset significantly before the end of its useful life, and financial distress of a third party for assets contracted with them on a long-
term basis, among others.

The review of long-lived assets and asset groups for impairment utilizes significant assumptions about operating strategies and estimates of future cash flows,
which  require  assessments  of  current  and  projected  market  conditions.  For  the  generation  business,  forecasting  future  cash  flows  requires  assumptions
regarding forecasted commodity prices for the sale of power and purchases of fuel and the expected operations of assets. A variation in the assumptions used
could lead to a different conclusion regarding the recoverability of an asset or asset group and, thus, could have a significant impact in the consolidated financial
statements. An impairment evaluation is based on an undiscounted cash flow analysis at the lowest level at which cash flows of the long-lived assets or asset
groups  are  largely  independent  of  the  cash  flows  of  other  assets  and  liabilities.  For  the  generation  business,  the  lowest  level  of  independent  cash  flows  is
determined by the evaluation of several factors, including the geographic dispatch of the generation units and the hedging strategies related to those units as
well  as  the  associated  intangible  assets  or  liabilities  recorded  on  the  balance  sheet.  The  cash  flows  from  the  generating  units  are  generally  evaluated  at  a
regional portfolio level with cash flows generated from the customer supply and risk management activities, including cash flows from related intangible assets
and liabilities on the balance sheet. In certain cases, generating assets may be evaluated on an individual basis where those assets are contracted on a long-
term basis with a third party and operations are independent of other generating assets (typically contracted renewables). For such assets the financial viability
of the third party, including the impact of bankruptcy on the contract, may be a significant assumption in the assessment.

On a quarterly basis, Generation assesses its long-lived assets or asset groups for indicators of impairment. If indicators are present for a long-lived asset or
asset  group,  a  comparison  of  the  undiscounted  expected  future  cash  flows  to  the  carrying  value  is  performed.  When  the  undiscounted  cash  flow  analysis
indicates the carrying value of a long-lived asset or asset group is not recoverable, the amount of the impairment loss is determined by measuring the excess of
the carrying amount of the long-lived asset or asset group over its fair value. The fair value of the long-lived asset or asset group is dependent upon a market
participant’s view of the exit price of the assets. This includes significant assumptions of the estimated future cash flows generated by the assets and market
discount rates. Events and circumstances often do not occur as expected  and there will usually be differences between prospective financial information and
actual results, and those differences may be material. The determination of fair value is driven by both internal assumptions that include significant unobservable
inputs  (Level  3)  such  as  revenue  and  generation  forecasts,  projected  capital,  and  maintenance  expenditures  and  discount  rates,  as  well  as  information  from
various public, financial and industry sources.

See  Note  7  —  Impairment  of  Long-Lived  Assets  and  Intangibles  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  a  discussion  of  asset
impairment evaluations made by Exelon.

Depreciable Lives of Property, Plant and Equipment (All Registrants)

The Registrants have significant investments in electric generation assets and electric and natural gas transmission and distribution assets. These assets are
generally  depreciated  on  a  straight-line  basis,  using  the  group,  composite  or  unitary  methods  of  depreciation.  The  group  approach  is  typically  for  groups  of
similar assets that have

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approximately the same useful lives and the composite approach is used for heterogeneous assets that have different lives. Under both methods, a reporting
entity depreciates the assets over the average life of the assets in the group. The estimation of asset useful lives requires management judgment, supported by
formal  depreciation  studies  of  historical  asset  retirement  experience.  Depreciation  studies  are  generally  completed  every  five  years,  or  more  frequently  if
required by a rate regulator or if an event, regulatory action, or change in retirement patterns indicate an update is necessary.

For the Utility Registrants, depreciation studies generally serve as the basis for amounts allowed in customer rates for recovery of depreciation costs. Generally,
the  Utility  Registrants  adjust  their  depreciation  rates  for  financial  reporting  purposes  concurrent  with  adjustments  to  depreciation  rates  reflected  in  customer
rates, unless the depreciation rates reflected in customer rates do not align with management’s judgment as to an appropriate estimated useful life or have not
been updated on a timely basis. Depreciation expense and customer rates for ComEd, BGE, Pepco, DPL and ACE includes an estimate of the future costs of
dismantling and removing plant from service upon retirement. See Note 4 - Regulatory Matters of the Combined Notes to the Consolidated Financial Statements
for information regarding regulatory liabilities and assets recorded by ComEd, BGE, Pepco, DPL and ACE related to removal costs.

PECO’s  removal  costs  are  capitalized  to  accumulated  depreciation  when  incurred,  and  recorded  to  depreciation  expense  over  the  life  of  the  new  asset
constructed consistent with PECO’s regulatory recovery method. Estimates for such removal costs are also evaluated in the periodic depreciation studies.

At Generation, along with depreciation study results, management considers expected future energy market conditions and generation plant operating costs and
capital investment requirements in determining the estimated service lives of its generating facilities. See Note  8 — Early Plant Retirements of the Combined
Notes to the Consolidated Financial Statements for additional information.

Changes  in  estimated  useful  lives  of  electric  generation  assets  and  of  electric  and  natural  gas  transmission  and  distribution  assets  could  have  a  significant
impact  on  the  Registrants’  future  results  of  operations.  See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial
Statements for information regarding depreciation and estimated service lives of the property, plant and equipment of the Registrants.

Defined Benefit Pension and Other Postretirement Employee Benefits (All Registrants)

Exelon sponsors defined benefit pension plans and other postretirement employee benefit plans for substantially all current employees. The measurement of the
plan obligations and costs of providing benefits involves various factors, including the development of valuation assumptions and inputs and accounting policy
elections.  When  developing  the  required  assumptions,  Exelon  considers  historical  information  as  well  as  future  expectations.  The  measurement  of  benefit
obligations and costs is affected by several assumptions including the discount rate applied to benefit obligations, the long-term expected rate of return on plan
assets,  the  anticipated  rate  of  increase  of  health  care  costs,  Exelon’s  expected  level  of  contributions  to  the  plans,  the  incidence  of  participant  mortality,  the
expected remaining service period of plan participants, the level of compensation and rate of compensation increases, employee age, length of service, and the
long-term  expected  investment  rate  credited  to  employees  of  certain  plans,  among  others.  The  assumptions  are  updated  annually  and  upon  any  interim
remeasurement of the plan obligations. Exelon amortizes actuarial gains or losses in excess of a corridor of 10% of the greater of the projected benefit obligation
or the market-related value (MRV) of plan assets over the expected average remaining service period of plan participants.

Pension and other postretirement benefit plan assets include equity securities, including U.S. and international securities, and fixed income securities, as well as
certain alternative investment classes such as real estate, private equity and hedge funds.

Expected Rate of Return on Plan Assets. In determining the EROA, Exelon considers historical economic indicators (including inflation and GDP growth) that
impact asset returns, as well as expectation regarding future long-term capital market performance, weighted by Exelon’s target asset class allocations. Exelon
calculates the amount of expected return on pension and other postretirement benefit plan assets by multiplying the EROA by the MRV of plan assets at the
beginning of the year, taking into consideration anticipated contributions and benefit payments to be made during the year. In determining MRV, the authoritative
guidance for pensions and postretirement benefits allows the use of either fair value or a calculated value that recognizes changes in fair value in a systematic
and rational manner over not more than five years. For the majority of pension plan assets, Exelon uses a calculated

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value that adjusts for 20% of the difference between fair value and expected MRV of plan assets. Use of this calculated value approach enables less volatile
expected asset returns to be recognized as a component of pension cost from year to year. For other postretirement benefit plan assets and certain pension
plan assets, Exelon uses fair value to calculate the MRV.

Discount  Rate.  At December  31,  2018  and 2017 ,  the  discount  rates  were  determined  by  developing  a  spot  rate  curve  based  on  the  yield  to  maturity  of  a
universe  of  high-quality  non-callable  (or  callable  with  make  whole  provisions)  bonds  with  similar  maturities  to  the  related  pension  and  other  postretirement
benefit  obligations.  The  spot  rates  are  used  to  discount  the  estimated  future  benefit  distribution  amounts  under  the  pension  and  other  postretirement  benefit
plans. The discount rate is the single level rate that produces the same result as the spot rate curve. Exelon utilizes an analytical tool developed by its actuaries
to determine the discount rates.

Mortality. The  mortality  assumption  is  composed  of  a  base  table  that  represents  the  current  expectation  of  life  expectancy  of  the  population  adjusted  by  an
improvement  scale  that  attempts  to  anticipate  future  improvements  in  life  expectancy.  Exelon’s  mortality  assumption  is  supported  by  an  actuarial  experience
study of Exelon's plan participants and utilizes the IRS's RP-2000 base table and the Scale BB 2-Dimensional improvement scale with long-term improvements
of 0.75% .

Sensitivity to Changes in Key Assumptions. The following tables illustrate the effects of changing certain of the actuarial assumptions discussed above, while
holding all other assumptions constant (dollars in millions):

Actuarial Assumption

Change in 2018 cost:

Discount rate (a)

EROA

Change in benefit obligation at December 31, 2018:

Discount rate (a)

Actual Assumption

Pension

OPEB

Change in
Assumption

Pension

OPEB

Total

3.62%

3.62%

7.00%

7.00%

4.31%

4.31%

3.61%

3.61%

6.60%

6.60%

4.30%

4.30%

0.5%

(0.5)%

0.5%

(0.5)%

0.5%

(0.5)%

  $

(51)   $

(17)   $

62  

(90)  

89  

(1,180)  

1,371  

21  

(13)  

13  

(246)  

284  

(68)

83

(103)

102

(1,426)

1,655

__________
(a)

In general, the discount rate will have a larger impact on the pension and other postretirement benefit cost and obligation as the rate moves closer to 0%. Therefore, the
discount  rate  sensitivities  above  cannot  necessarily  be  extrapolated  for  larger  increases  or  decreases  in  the  discount  rate.  Additionally,  Exelon  utilizes  a  liability-driven
investment strategy for its pension asset portfolio. The sensitivities shown above do not reflect the offsetting impact that changes in discount rates may have on pension
asset returns.

See Note 16 — Retirement Benefits of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  the  accounting  for  the
defined benefit pension plans and other postretirement benefit plans.

Regulatory Accounting (Exelon and Utility Registrants)

For their regulated electric and gas operations, Exelon and the Utility Registrants reflect the effects of cost-based rate regulation in their financial statements,
which is required for entities with regulated operations that meet the following criteria: (1) rates are established or approved by a third-party regulator; (2) rates
are  designed  to  recover  the  entities’  cost  of  providing  services  or  products;  and  (3)  a  reasonable  expectation  that  rates  designed  to  recover  costs  can  be
charged to and collected from customers. Regulatory assets represent incurred costs that have been deferred because of their probable future recovery from
customers  through  regulated  rates.  Regulatory  liabilities represent  (1)  revenue  or  gains  that  have  been  deferred  because  it is probable  such amounts  will be
returned to customers through future regulated rates; or (2) billings in advance of expenditures for approved regulatory programs. If it is concluded in a future
period that a separable portion of operations no longer meets the criteria discussed above, Exelon and the Utility Registrants would be required to eliminate any
associated regulatory assets and liabilities and the impact would be recognized in the Consolidated Statements of Operations and Comprehensive Income and
could be material.

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The  following  table  illustrates  the  gains  (losses)  that  could  result  from  the  elimination  of  regulatory  assets  and  liabilities  and  charges  against  OCI  (dollars  in
millions before taxes) related to deferred costs associated with Exelon's pension and other postretirement benefit plans that are recorded as regulatory assets in
Exelon's Consolidated Balance Sheets:

December 31, 2018

Gain (loss)

Exelon

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

$

744   $

4,743   $

55   $

694   $

(853)   $

(84)   $

375   $

(6)

Charge against OCI (a)
___________
(a) Exelon's charge against OCI (before taxes) consists of up to  $2.4 billion , $529 million , $157 million , $413 million , $208 million and $105 million related to ComEd's,

3,754   $

—   $

—   $

—   $

—   $

—   $

—   $

$

—

BGE's, PHI's, Pepco's, DPL's and ACE's respective portions of the deferred costs associated with Exelon's pension and other postretirement benefit plans. Exelon also
has a net regulatory liability of $(47) million (before taxes) related to PECO’s portion of the deferred costs associated with Exelon’s other postretirement benefit plans that
would result in an increase in OCI if reversed.

See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information regarding regulatory matters, including
the regulatory assets and liabilities tables of Exelon and the Utility Registrants.

For each regulatory jurisdiction in which they conduct business, Exelon and the Utility Registrants assess whether the regulatory assets and liabilities continue to
meet  the  criteria  for  probable  future  recovery  or  settlement  at  each  balance  sheet  date  and  when  regulatory  events  occur.  This  assessment  includes
consideration of recent rate orders, historical regulatory treatment for similar costs in each Registrant's jurisdictions, and factors such as changes in applicable
regulatory and political environments. If the assessments and estimates made by Exelon and the Utility Registrants for regulatory assets and regulatory liabilities
are ultimately different than actual regulatory outcomes, the impact in their consolidated financial statements could be material.

Refer  to  the  revenue  recognition  discussion  below  for  additional  information  on  the  annual  revenue  reconciliations  associated  with  ICC-approved  electric
distribution and energy efficiency formula rates for ComEd, and FERC transmission formula rate tariffs for the Utility Registrants.

Accounting for Derivative Instruments (All Registrants)

The Registrants use derivative instruments to manage commodity price risk, foreign currency exchange risk and interest rate risk related to ongoing business
operations.  The  Registrants’  derivative  activities  are  in  accordance  with  Exelon’s  Risk  Management  Policy  (RMP).  See  Note  12  —  Derivative  Financial
Instruments of the Combined Notes to Consolidated Financial Statements for additional information.

The Registrants account for derivative financial instruments under the applicable authoritative guidance. Determining whether a contract qualifies as a derivative
requires  that  management  exercise  significant  judgment,  including  assessing  market  liquidity  as  well  as  determining  whether  a  contract  has  one  or  more
underlyings  and  one  or  more  notional  quantities.  Changes  in  management’s  assessment  of  contracts  and  the  liquidity  of  their  markets,  and  changes  in
authoritative guidance, could result in previously excluded contracts becoming in scope to new authoritative guidance.

Under current authoritative guidance, all derivatives are recognized on the balance sheet at their fair value, except for certain derivatives that qualify for, and are
elected  under,  the  normal  purchases  and  normal  sales  exception.  Derivatives  entered  into  for  economic  hedging  and  for  proprietary  trading  purposes  are
recorded at fair value through earnings. For economic hedges that are not designated for hedge accounting for the Utility Registrants, changes in the fair value
each  period  are  generally  recorded  with  a  corresponding  offsetting  regulatory  asset  or  liability  given  likelihood  of  recovering  the  associated  costs  through
customer rates.

Normal Purchases and Normal Sales Exception. As part of Generation’s energy marketing business, Generation enters into contracts to buy and sell energy
to  meet  the  requirements  of  its  customers.  These  contracts  include  short-term  and  long-term  commitments  to  purchase  and  sell  energy  and  energy-related
products  in  the  retail  and  wholesale  markets  with  the  intent  and  ability  to  deliver  or  take  delivery.  While  some  of  these  contracts  are  considered  derivative
financial instruments under the authoritative guidance, certain of these qualifying transactions have been designated by Generation as normal purchases and
normal sales transactions, which are thus not required to be

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recorded  at  fair  value,  but  rather  on  an  accrual  basis  of  accounting.  Determining  whether  a  contract  qualifies  for  the  normal  purchases  and  normal  sales
exception  requires  judgment  on  whether  the  contract  will  physically  deliver  and  requires  that  management  ensure  compliance  with  all  of  the  associated
qualification and documentation requirements. Revenues and expenses on contracts that qualify as normal purchases and normal sales are recognized when
the  underlying  physical  transaction  is  completed.  Contracts  that  qualify  for  the  normal  purchases  and  normal  sales  exception  are  those  for  which  physical
delivery  is  probable,  quantities  are  expected  to  be  used  or  sold  in  the  normal  course  of  business  over  a  reasonable  period  of  time  and  the  contract  is  not
financially  settled  on  a  net  basis.  The  contracts  that  ComEd  has  entered  into  with  suppliers  as  part  of  ComEd’s  energy  procurement  process,  PECO’s  full
requirement contracts under the PAPUC-approved DSP program, most of PECO’s natural gas supply agreements, all of BGE’s full requirement contracts and
natural  gas  supply  agreements  that  are  derivatives  and  certain  Pepco,  DPL  and  ACE  full  requirement  contracts  qualify  for  and  are  accounted  for  under  the
normal purchases and normal sales exception.

Commodity Contracts. Identification of a commodity contract as an economic hedge requires Generation to determine that the contract is in accordance with
the RMP. Generation reassesses its economic hedges on a regular basis to determine if they continue to be within the guidelines of the RMP.

As a part of the authoritative guidance, the Registrants make estimates and assumptions concerning future commodity prices, load requirements, interest rates,
the timing of future transactions and their probable cash flows, the fair value of contracts and the expected changes in the fair value in deciding whether or not to
enter into derivative transactions, and in determining the initial accounting treatment for derivative transactions. Under the authoritative guidance for fair value
measurements, the Registrants categorize these derivatives under a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair
value.

Derivative  contracts  are  traded  in  both  exchange-based  and  non-exchange-based  markets.  Exchange-based  derivatives  that  are  valued  using  unadjusted
quoted prices in active markets are generally categorized in Level 1 in the fair value hierarchy.

Certain derivatives’  pricing is verified  using indicative  price  quotations  available through  brokers  or over-the-counter,  on-line  exchanges.  The  price quotations
reflect the average of the bid-ask mid-point from markets that the Registrants believe provide the most liquid market for the commodity. The price quotations are
reviewed  and  corroborated  to  ensure  the  prices  are  observable  and  representative  of  an  orderly  transaction  between  market  participants.  The  Registrant’s
derivatives are traded predominately at liquid trading points. The remaining derivative contracts are valued using models that consider inputs such as contract
terms, including maturity, and market parameters, and assumptions of the future prices of energy, interest rates, volatility, credit worthiness and credit spread.
For  derivatives  that  trade  in  liquid  markets,  such  as  generic  forwards,  swaps  and  options,  the  model  inputs  are  generally  observable.  Such  instruments  are
categorized in Level 2.

For  derivatives  that  trade  in  less  liquid  markets  with  limited  pricing  information,  the  model  inputs  generally  would  include  both  observable  and  unobservable
inputs and are categorized in Level 3.

The Registrants consider nonperformance risk, including credit risk in the valuation of derivative contracts, including both historical and current market data in its
assessment of nonperformance risk, including credit risk. The impacts of nonperformance and credit risk to date have generally not been material to the financial
statements.

Interest Rate and Foreign Exchange Derivative Instruments. The Registrants may utilize fixed-to-floating interest rate swaps to achieve the targeted level of
variable-rate debt as a percent of total debt. Additionally, the Registrants may use forward-starting interest rate swaps and treasury rate locks to lock in interest-
rate  levels  and  floating  to  fixed  swaps  for  project  financing.  In  addition,  Generation  enters  into  interest  rate  derivative  contracts  to  economically  hedge  risk
associated  with  the  interest  rate  component  of  commodity  positions.  Generation  does  not  utilize  interest  rate  derivatives  with  the  objective  of  benefiting  from
shifts or changes in market interest rates. To manage foreign exchange rate exposure associated with international energy purchases in currencies other than
U.S. dollars, Generation utilizes foreign currency derivatives, which are typically designated as economic hedges. The fair value of the agreements is calculated
by discounting  the  future  net  cash flows to the  present  value based  on observable  inputs  and  are primarily categorized  in Level 2 in the  fair value hierarchy.
Certain exchange based interest rate derivatives that are valued using unadjusted quoted prices in active markets are categorized in Level 1 in the fair value
hierarchy.

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See ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK and Note 11 — Fair Value of Financial Assets and Liabilities and
Note 12 — Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements for additional information regarding the Registrants’
derivative instruments.

Taxation (All Registrants)

Significant management judgment is required in determining the Registrants’ provisions for income taxes, primarily due to the uncertainty related to tax positions
taken,  as  well  as  deferred  tax  assets  and  liabilities  and  valuation  allowances.  The  Registrants  account  for  uncertain  income  tax  positions  using  a  benefit
recognition model with a two-step approach including a more-likely-than-not recognition threshold and a measurement approach based on the largest amount of
tax benefit that is greater than 50% likely of being realized upon ultimate settlement. Management evaluates each position based solely on the technical merits
and  facts  and  circumstances  of  the  position,  assuming  the  position  will  be  examined  by  a  taxing  authority  having  full  knowledge  of  all  relevant  information.
Significant judgment is required to determine whether the recognition threshold has been met and, if so, the appropriate amount of tax benefits to be recorded in
the Registrants’ consolidated financial statements.

The Registrants evaluate quarterly the probability of realizing deferred tax assets by reviewing a forecast of future taxable income and their intent and ability to
implement  tax  planning  strategies,  if  necessary,  to  realize  deferred  tax  assets.  The  Registrants  also  assess  negative  evidence,  such  as  the  expiration  of
historical  operating  loss  or  tax  credit  carryforwards,  that  could  indicate  the  Registrant's  inability  to  realize  its  deferred  tax  assets.  Based  on  the  combined
assessment, the Registrants record valuation allowances for deferred tax assets when it is more-likely-than-not such benefit will not be realized in future periods.

Actual income taxes could vary from estimated amounts due to the future impacts of various items, including future changes in income tax laws, the Registrants’
forecasted financial condition and results of operations, failure to successfully implement tax planning strategies, as well as results of audits and examinations of
filed tax returns by taxing authorities. See Note 14 — Income Taxes of the Combined Notes to Consolidated Financial Statements for additional information.

Accounting for Loss Contingencies (All Registrants)

In the preparation of their financial statements, the Registrants make judgments regarding the future outcome of contingent events and record liabilities for loss
contingencies that are probable and can be reasonably estimated based upon available information. The amount recorded may differ from the actual expense
incurred when the uncertainty is resolved. Such difference could have a significant impact in the Registrants' consolidated financial statements.

Environmental  Costs.  Environmental  investigation  and  remediation  liabilities  are  based  upon  estimates  with  respect  to  the  number  of  sites  for  which  the
Registrants will be responsible, the scope and cost of work to be performed at each site, the portion of costs that will be shared with other parties, the timing of
the  remediation  work  and  changes  in  technology,  regulations  and  the  requirements  of  local  governmental  authorities.  Annual  studies  and/or  reviews  are
conducted at ComEd, PECO, BGE and DPL to determine future remediation requirements for MGP sites and estimates are adjusted accordingly. In addition,
periodic  reviews  are  performed  at  each  of  the  Registrants  to  assess  the  adequacy  of  other  environmental  reserves.  These  matters,  if  resolved  in  a  manner
different  from  the  estimate,  could  have  a  significant  impact  in  the  Registrants’  consolidated  financial  statements.  See  Note  22  —  Commitments  and
Contingencies of the Combined Notes to Consolidated Financial Statements for additional information.

Other, Including Personal Injury Claims. The Registrants are self-insured for general liability, automotive liability, workers’ compensation, and personal injury
claims to the extent that losses are within policy deductibles or exceed the amount of insurance maintained. The Registrants have reserves for both open claims
asserted  and  an  estimate  of  claims  incurred  but  not  reported  (IBNR).  The  IBNR  reserve  is  estimated  based  on  actuarial  assumptions  and  analysis  and  is
updated  annually.  Future  events,  such  as  the  number  of  new  claims to  be  filed  each  year,  the  average  cost  of  disposing  of  claims, as  well as  the  numerous
uncertainties  surrounding  litigation  and  possible  state  and  national  legislative  measures  could  cause  the  actual  costs  to  be  higher  or  lower  than  estimated.
Accordingly, these claims, if resolved in a manner different from the estimate, could have a material impact in the Registrants’ consolidated financial statements.

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Revenue Recognition (All Registrants)

Sources  of  Revenue  and  Determination  of  Accounting  Treatment.  The  Registrants  earn  revenues  from  various  business  activities  including:  the  sale  of
power and energy-related products, such as natural gas, capacity, and other commodities in non-regulated markets (wholesale and retail); the sale and delivery
of power and natural gas in regulated markets; and the provision of other energy-related non-regulated products and services.

The accounting treatment for revenue recognition is based on the nature of the underlying transaction and applicable authoritative guidance. The Registrants
primarily apply the Revenue from Contracts with Customers, Derivative and Alternative Revenue Program (ARP) guidance to recognize revenue as discussed in
more detail below.

Revenue from Contracts with Customers. Under the Revenue from Contracts with Customers guidance, the Registrants recognize revenues in the period in
which  the  performance  obligations  within  contracts  with  customers  are  satisfied,  which  generally  occurs  when  power,  natural  gas,  and  other  energy-related
commodities  are  physically delivered  to  the  customer.  Transactions  of  the  Registrants  within  the  scope  of  Revenue  from  Contracts  with  Customers  generally
include  non-derivative  agreements,  contracts  that  are  designated  as  normal  purchases  and  normal  sales  (NPNS),  sales  to  utility  customers  under  regulated
service tariffs, and spot-market energy commodity sales, including settlements with independent system operators.

The  determination  of  Generation’s  and  the  Utility  Registrants'  retail  power  and  natural  gas  sales  to  individual  customers  is  based  on  systematic  readings  of
customer meters, generally on a monthly basis. At the end of each month, amounts of energy delivered to customers since the date of the last meter reading are
estimated,  and  corresponding  unbilled  revenue  is  recorded.  The  measurement  of  unbilled  revenue  is  affected  by  the  following  factors:  daily  customer  usage
measured  by  generation  or  gas  throughput  volume,  customer  usage  by  class,  losses  of  energy  during  delivery  to  customers  and  applicable  customer  rates.
Increases  or  decreases  in  volumes  delivered  to  the  utilities’  customers  and  favorable  or  unfavorable  rate  mix  due  to  changes  in  usage  patterns  in  customer
classes in the period could be significant to the calculation of unbilled revenue. In addition, revenues may fluctuate monthly as a result of customers electing to
use an alternate supplier, since unbilled commodity revenues are not recorded for these customers. Changes in the timing of meter reading schedules and the
number  and  type  of  customers  scheduled  for  each  meter  reading  date  also  impact  the  measurement  of  unbilled  revenue;  however,  total  operating  revenues
would remain materially unchanged. See Note 1 — Significant Accounting Policies of the Combined Notes to Consolidated Financial Statements for additional
information.

Derivative Revenues. The Registrants record revenues and expenses using the mark-to-market method of accounting for transactions that are accounted for
as  derivatives.  These  derivative  transactions  primarily  relate  to  commodity  price  risk  management  activities.  Mark-to-market  revenues  and  expenses  include:
inception gains or losses on new transactions where the fair value is observable, unrealized gains and losses from changes in the fair value of open contracts,
and realized gains and losses.

Alternative Revenue Program Accounting. Certain of the Utility Registrants’ ratemaking mechanisms qualify as Alternative Revenue Programs (ARPs) if they
(i) are established by a regulatory order and allow for automatic adjustment to future rates, (ii) provide for additional revenues (above those amounts currently
reflected in the price of utility service) that are objectively determinable and probable of recovery, and (iii) allow for the collection of those additional revenues
within 24 months following the end of the period in which they were recognized. For mechanisms that meet these criteria, which include the Utility Registrants’
formula rate and revenue decoupling mechanisms, the Utility Registrants adjust revenue and record an offsetting regulatory asset or liability once the condition
or event allowing additional billing or refund has occurred. The ARP revenues presented in the Utility Registrants’ Consolidated Statements of Operations and
Comprehensive  Income  include  both:  (i)  the  recognition  of  “originating”  ARP revenues  (when  the  regulator-specified  condition  or  event  allowing for  additional
billing or refund has occurred) and (ii) an equal and offsetting reversal of the “originating” ARP revenues as those amounts are reflected in the price of utility
service and recognized as Revenue from Contracts with Customers.

ComEd records ARP revenue for its best estimate of the electric distribution, energy efficiency, and transmission revenue impacts resulting from future changes
in rates that ComEd believes are probable of approval by the ICC and FERC in accordance with its formula rate mechanisms. BGE, Pepco and DPL record ARP
revenue for their best estimate of the electric and natural gas distribution revenue impacts resulting from future changes in rates that they believe are probable of
approval by the MDPSC and/or DCPSC in accordance with their revenue decoupling mechanisms. PECO, BGE, Pepco, DPL and ACE record ARP revenue for
their best estimate of the transmission revenue impacts resulting from future changes in rates that they believe are probable of approval by FERC in

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accordance  with  their  formula  rate  mechanisms.  Estimates  of  the  current  year  revenue  requirement  are  based  on  actual  and/or  forecasted  costs  and
investments in rate base for the period and the rates of return on common equity and associated regulatory capital structure allowed under the applicable tariff.
The estimated reconciliation can be affected by, among other things, variances in costs incurred, investments made, allowed ROE, and actions by regulators or
courts.

See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information.

Allowance for Uncollectible Accounts (Utility Registrants)

Utility Registrants estimate the allowance for uncollectible accounts on customer receivables by applying loss rates developed specifically for each company to
the  outstanding  receivable  balance  by  customer  risk  segment.  Risk  segments  represent  a  group  of  customers  with  similar  credit  quality  indicators  that  are
comprised based on various attributes, including delinquency of their balances and payment history. Loss rates applied to the accounts receivable balances are
based  on  a  historical  average  of  charge-offs  as  a  percentage  of  accounts  receivable  in  each  risk  segment.  The  Utility  Registrants'  customer  accounts  are
generally  considered  delinquent  if  the  amount  billed  is  not  received  by  the  time  the  next  bill  is  issued,  which  normally  occurs  on  a  monthly  basis.  Utility
Registrants'  customer  accounts  are  written  off  consistent  with  approved  regulatory  requirements.  Utility  Registrants'  allowances  for  uncollectible  accounts  will
continue  to  be  affected  by  changes  in  volume,  prices  and  economic  conditions  as  well  as  changes  in  ICC,  PAPUC,  MDPSC,  DCPSC,  DPSC  and  NJBPU
regulations.

Results of Operations by Registrant

The Registrants' Results of Operations includes discussion of RNF, which is a financial measure not defined under GAAP and may not be comparable to other
companies' presentations or deemed more useful than the GAAP information provided elsewhere in this report. The CODMs for Exelon and Generation evaluate
the performance of Generation's electric business activities and allocate resources based on RNF. Generation believes that RNF is a useful measure because it
provides information that can be used to evaluate its operational performance. For the Utility Registrants, their Operating revenues reflect the full and current
recovery of commodity procurement costs given the rider mechanisms approved by their respective state regulators. The commodity procurement costs, which
are recorded in Purchased power and fuel expense, and the associated revenues can be volatile. Therefore, the Utility Registrants believe that RNF is a useful
measure because it excludes the effect on Operating revenues caused by the volatility in these expenses.

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Results of Operations—Generation

Operating revenues

Purchased power and fuel expense

Revenues net of purchased power

and fuel expense

Other operating expenses

Operating and maintenance

Depreciation and amortization

Taxes other than income

Total other operating expenses

Gain (loss) on sales of assets and businesses

Bargain purchase gain

Gain on deconsolidation of business

Operating income

Other income and (deductions)

Interest expense

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Equity in losses of unconsolidated affiliates

Net income

Net income attributable to noncontrolling interests

2018

2017

Favorable
(unfavorable) 2018 vs.
2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

$

20,437   $

18,500   $

1,937   $

17,757   $

11,693  

9,690  

(2,003)  

8,830  

8,744

8,810  

(66)

8,927

5,464  

1,797  

556  

7,817

48  

—  

—  

975

(432)  

(178)  

(610)

365

(108)  

(30)  

443

73  

6,299  

1,457  

555  

8,311  

2  

233  

213  

947

(440)  

948  

508

1,455

(1,376)  

(33)  

2,798

88  

835  

(340)  

(1)  

494

46  

(233)  

(213)  

28

8  

(1,126)  

(1,118)

(1,090)

(1,268)  

3  

(2,355)

(15)  

5,663  

1,879  

506  

8,048

(59)  

—  

—  

820

(364)  

401  

37

857

282  

(25)  

550

67  

743

(860)

(117)

(636)

422

(49)

(263)

61

233

213

127

(76)

547

471

598

1,658

(8)

2,248

21

2,227

Net income attributable to membership interest

$

370

$

2,710

$

(2,340)

$

483

$

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 . Net income attributable to membership interest decreased by $2,340
million primarily due to:

•

•

•

•

•

•

•

Impacts associated with the one-time remeasurement of deferred income taxes in 2017 as a result of the TCJA;

Net unrealized losses on NDT funds in 2018 compared to net gains in 2017;

Lower realized energy prices;

Accelerated depreciation and amortization due to the decision to early retire the Oyster Creek and TMI nuclear facilities;

The gain associated with the FitzPatrick acquisition in 2017;

Increased mark-to-market losses;

The gain recorded upon deconsolidation of EGTP's net liabilities in 2017;

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•

•

The absence of EGTP earnings resulting from its deconsolidation in the fourth quarter of 2017; and

Long-lived asset impairments of certain merchant wind assets in West Texas.

The decreases were partially offset by;

•

•

•

•

•

•

The  impact  of  the  New York  and  Illinois ZEC  revenue  (including  the  impact  of  zero  emission  credits  generated  in  Illinois from  June  1,  2017  through
December 31, 2017);

Long-lived asset impairments primarily related to the EGTP assets held for sale in 2017;

Increased capacity prices;

The impact of lower federal income tax rate as a result of the TCJA at Generation;

Net realized gains on NDT funds; and

Decreased nuclear outage days.

Year Ended December 31, 2017 Compared  to  Year  Ended  December 31, 2016 . Net income  attributable  to membership  interest  increased by $2,227
million primarily due to:

•

•

•

•

•

•

•

•

Impacts associated with the one-time remeasurement of deferred income taxes as a result of the TCJA;

The gain associated with the FitzPatrick acquisition;

Accelerated depreciation and amortization due to the decision to early retire the TMI nuclear facility in 2017 compared to the previous decision in 2016
to early retire the Clinton and Quad Cities nuclear facilities;

Higher net unrealized and realized gains on NDT funds;

The impact of the New York ZEC revenue;

The gain recorded upon deconsolidation of EGTP's net liabilities;

Increased capacity prices; and

Decreased nuclear outage days.

These increases were partially offset by:

•

•

•

•

•

Long-lived asset impairments primarily related to the EGTP assets held for sale;

Lower realized energy prices;

The conclusion of the Ginna Reliability Support Services Agreement;

Increased costs related to the acquisition of the FitzPatrick nuclear facility; and

Increased mark-to-market losses.

Revenues  Net  of  Purchased  Power  and  Fuel  Expense.  The  basis  for  Generation’s  reportable  segments  is  the  integrated  management  of  its  electricity
business  that  is  located  in  different  geographic  regions,  and  largely  representative  of  the  footprints  of  ISO/RTO  and/or  NERC  regions,  which  utilize  multiple
supply  sources  to  provide  electricity  through  various  distribution  channels  (wholesale  and  retail).  Generation's  hedging  strategies  and  risk  metrics  are  also
aligned with these same geographic regions. Generation's six reportable segments are Mid-Atlantic, Midwest, New England, ERCOT and Other Power Regions.
During the first quarter of 2019, due to a change in economics in our New England region, Generation is changing the way that information is reviewed by the
CODM.  The  New  England  region  will  no  longer  be  regularly  reviewed  as  a  separate  region  by  the  CODM  nor  will  it  be  presented  separately  in  any  external
information  presented  to  third  parties.  Information  for  the  New  England  region  will  be  reviewed  by  the  CODM  as  part  of  Other  Power  Regions.  As  a  result,
beginning in the first quarter of 2019, Generation will disclose five reportable segments consisting of Mid-Atlantic, Midwest, New York, ERCOT and

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Other  Power  Regions.  See  Note  24 - Segment Information of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  on  these
reportable segments.

The following business activities are not allocated to a region, and are reported under Other: natural gas, as well as other miscellaneous business activities that
are not significant to overall operating revenues or results of operations. Further, the following activities are not allocated to a region, and are reported in Other:
amortization  of  certain  intangible  assets  relating  to  commodity  contracts  recorded  at  fair  value  from  mergers  and  acquisitions;  accelerated  nuclear  fuel
amortization associated with nuclear decommissioning; and other miscellaneous revenues.

Generation evaluates the operating performance of electric business activities using the measure of RNF. Operating revenues include all sales to third parties
and  affiliated  sales  to  the  Utility  Registrants.  Purchased  power  costs  include  all  costs  associated  with  the  procurement  and  supply  of  electricity  including
capacity, energy and ancillary services. Fuel expense includes the fuel costs for owned generation and fuel costs associated with tolling agreements.

For the years ended December 31, 2018 compared to 2017 and December 31, 2017 compared to 2016 , RNF by region were as follows:

Mid-Atlantic (a)

Midwest (a)
New England

New York (c)
ERCOT

Other Power Regions

Total electric revenues net of
purchased power and fuel
expense

Proprietary Trading

Mark-to-market losses

Other (b)
Total revenue net of purchased
power and fuel expense

2018

2017

Variance

% Change

2016

Variance

% Change

2018 vs. 2017

2017 vs. 2016

$

3,073   $

3,214   $

3,135  

354  

1,122  

258  

375  

2,820  

514  

1,008  

332  

305  

8,317

8,193

42  

(319)  

704  

18  

(175)  

774  

(141)  

315  

(160)  

114  

(74)  

70  

124  

24  

(144)  

(70)  

(4.4)%   $

3,317   $

11.2 %  

(31.1)%  

11.3 %  

(22.3)%  

23.0 %  

1.5 %  

n.m.

82.3 %  

(9.0)%  

2,971  

438  

752  

281  

336  

8,095

15  

(41)  

858  

(103)  

(151)  

76  

256  

51  

(31)  

98  

3  

(134)  

(84)  

(3.1)%

(5.1)%

17.4 %

34.0 %

18.1 %

(9.2)%

1.2 %

n.m.

326.8 %

(9.8)%

$

8,744

$

8,810

$

(66)  

(0.7)%   $

8,927

$

(117)  

(1.3)%

_________
(a)

Includes  results  of  transactions  with  PECO  and  BGE  in  the  Mid-Atlantic  region  and  results  of  transactions  with  ComEd  in  the  Midwest  region.  As  a  result  of  the  PHI
merger, includes results of transactions with Pepco, DPL and ACE in the Mid-Atlantic region beginning on March 24, 2016.

(b) Other  represents  activities  not  allocated  to  a  region.  Includes  amortization  of  intangible  assets  related  to  commodity  contracts  recorded  at  fair  value  of  a  $54 million
decrease to RNF and a $57 million decrease to RNF for the years ended December 31, 2017 and 2016 , respectively, accelerated nuclear fuel amortization associated
with announced early plant retirements, as discussed in Note 8 - Early Plant Retirements of the Combined Notes to Consolidated Financial Statements, of $57 million ,
$12 million and $60 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and gain on the settlement of a long-term gas supply agreement of $75
million for the year ended December 31, 2018.
Includes the ownership of the FitzPatrick nuclear facility from March 31, 2017.

(c)

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2018

2017

Variance

% Change

2016

Variance

% Change

2018 vs. 2017

2017 vs. 2016

Table of Contents

Generation’s supply sources by region are summarized below:

Supply Source (GWhs)

Nuclear Generation (a)
Mid-Atlantic

Midwest

New York (c)

64,099  

94,283  

26,640  

64,466  

93,344  

25,033  

Total Nuclear Generation

185,022  

182,843  

Fossil and Renewables

Mid-Atlantic

Midwest

New England

New York

ERCOT

Other Power Regions

Total Fossil and Renewables

Purchased Power

Mid-Atlantic  

Midwest

New England

New York

ERCOT

Other Power Regions

Total Purchased Power

Total Supply/Sales by Region

Mid-Atlantic (b)

Midwest (b)

New England

New York

ERCOT

Other Power Regions

3,670  

1,373  

4,731  

3  

11,180  

8,525  

29,482

6,506  

996  

2,789  

1,482  

7,179  

3  

12,072  

6,869  

30,394  

9,801  

1,373  

26,033  

18,517  

—  

6,550  

18,965  

59,050  

74,275  

96,652  

30,764  

26,643  

17,730  

27,490  

28  

7,346  

14,530  

51,595

77,056  

96,199  

25,696  

25,064  

19,418  

21,399  

Total Supply/Sales by Region

273,554

264,832

(367)  

939  

1,607  

2,179  

881  

(109)  

(2,448)  

—  

(892)  

1,656  

(912)  

(3,295)  

(377)  

7,516  

(28)  

(796)  

4,435  

7,455  

(2,781)  

453  

5,068  

1,579  

(1,688)  

6,091  

8,722  

(0.6)%  

1.0 %  

6.4 %  

1.2 %  

31.6 %  

(7.4)%  

(34.1)%  

— %  

(7.4)%  

24.1 %  

(3.0)%  

(33.6)%  

(27.5)%  

40.6 %  

— %  

(10.8)%  

30.5 %  

14.4 %  

(3.6)%  

0.5 %  

19.7 %  

6.3 %  

(8.7)%  

28.5 %  

3.3 %  

63,447  

94,668  

18,684  

176,799  

2,731  

1,488  

6,968  

3  

6,785  

8,179  

26,154

16,874  

2,255  

16,632  

—  

10,637  

13,589  

59,987  

83,052  

98,411  

23,600  

18,687  

17,422  

21,768  

262,940

1,019  

(1,324)  

6,349  

6,044  

58  

(6)  

211  

—  

5,287  

(1,310)  

4,240  

(7,073)  

(882)  

1,885  

28  

(3,291)  

941  

(8,392)  

(5,996)  

(2,212)  

2,096  

6,377  

1,996  

(369)  

1,892  

1.6 %

(1.4)%

34.0 %

3.4 %

2.1 %

(0.4)%

3.0 %

— %

77.9 %

(16.0)%

16.2 %

(41.9)%

(39.1)%

11.3 %

— %

(30.9)%

6.9 %

(14.0)%

(7.2)%

(2.2)%

8.9 %

34.1 %

11.5 %

(1.7)%

0.7 %

__________
(a)

Includes the proportionate share of output where Generation has an undivided ownership interest in jointly-owned generating plants and includes the total output of plants
that are fully consolidated (e.g. CENG).
Includes affiliate sales to PECO and BGE in the Mid-Atlantic region and affiliate sales to ComEd in the Midwest region. As a result of the PHI Merger, includes affiliate
sales to Pepco, DPL and ACE in the Mid-Atlantic region beginning on March 24, 2016.
Includes the ownership of the FitzPatrick nuclear facility from March 31, 2017.

(b)

(c)

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Table of Contents

For the years ended December 31, 2018 compared to 2017 and December 31, 2017 compared to 2016 , changes in RNF by region were as follows:

Mid-Atlantic

Increase/(Decrease)

$

(141)

2018 vs. 2017

Description

• lower realized energy prices,
  partially offset by
• increased capacity prices

• the impact of the Illinois ZES
• increased capacity prices,
  partially offset by
• lower realized energy prices

• lower realized energy prices,
  partially offset by
• increased capacity prices

• impact of the New York CES
• acquisition of Fitzpatrick,
  partially offset by
• the conclusion of the Ginna Reliability
Support Service Agreement

• deconsolidation of EGTP in 2017,
  partially offset by
• the addition of two combined-cycle gas
turbines in Texas

Midwest

New England

New York

ERCOT

Other Power Regions

Proprietary Trading

Mark-to-Market

Other

315

(160)

114

(74)

70

24

(144)

(70)

Increase/(Decrease)

$

(103)

2017 vs. 2016

Description

• lower load volumes
• lower realized energy prices
• decreased capacity prices,
  partially offset by
• the absence of oil inventory write-downs in
2017
• decreased nuclear outage days

(151)

• lower realized energy prices
• increased nuclear outage days, partially
offset by
• decreased fuel prices

76

256

• increased capacity prices,
  partially offset by
• lower realized energy prices

• the impact of the New York CES
• acquisition of FitzPatrick,
  partially offset by
• conclusion of the Ginna Reliability Support
Service Agreement
• lower realized energy prices

51

• the addition of two combined-cycle gas
turbines in Texas,
  partially offset by
• lower realized energy prices

• higher realized energy prices

(31)

• lower realized energy prices

• congestion activity

3

• congestion activity

• losses on economic hedging activities of
$319 million in 2018 compared to losses of
$175 million in 2017

• decline in revenues related to the energy
efficiency business
• the sale of Generation's electrical
contracting business in 2018
• accelerated nuclear fuel amortization
associated with announced early plant
retirements,
  partially offset by
• the absence of amortization of energy
contracts recorded at fair value associated
with prior acquisitions
• gain on the settlement of a long-term gas
supply agreement

(134)

(84)

• losses on economic hedging activities of
$175 million in 2017 compared to losses of
$41 million in 2016

• the impacts of declining natural gas prices
on Generation's natural gas portfolio
• decline in revenues related to the
distributed generation business,
  partially offset by
• decrease in accelerated nuclear fuel
amortization associated with announced
early plant retirements

Total

$

(66)

$

(117)

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Nuclear  Fleet  Capacity  Factor.  The  following  table  presents  nuclear  fleet  operating  data  for  the  Generation-operated  plants,  which  reflects  ownership
percentage of stations operated by Exelon, excluding Salem, which is operated by PSEG Nuclear, LLC and including the ownership of the FitzPatrick nuclear
facility from March 31, 2017. The nuclear fleet capacity factor presented in the table is defined as the ratio of the actual output of a plant over a period of time to
its output if the plant had operated at full average annual mean capacity for that time period. Generation considers capacity factor to be a useful measure to
analyze the nuclear fleet performance between periods. Generation has included the analysis below as a complement to the financial information provided in
accordance with GAAP. However, these measures are not a presentation defined under GAAP and may not be comparable to other companies’ presentations or
be more useful than the GAAP information provided elsewhere in this report.

Nuclear fleet capacity factor

Refueling outage days

Non-refueling outage days

The changes in Operating and maintenance expense , consisted of the following:

2018

2017

2016

94.6%  

274

38

94.1%  

293

53

94.6%

245

63

Impairment and related charges of certain generating assets (b)

Merger and integration costs (c)

Insurance

Pension and non-pension postretirement benefits expense

BSC costs
Plant retirements and divestitures (d)

Accretion expense

Nuclear refueling outage costs, including the co-owned Salem plant
Labor, other benefits, contracting and materials (e)
Vacation policy change (f)

Change in environmental liabilities

Other

Decrease in operating and maintenance expense

Increase (Decrease) 
2018 vs. 2017 (a)

(432)

(68)

(36)

(22)

13

53

(14)

(24)

(255)

40

(45)

(45)

(835)

$

$

Includes the ownership of the FitzPatrick nuclear facility from March 31, 2017.

__________
(a)
(b) Primarily reflects the impairment of certain wind projects in 2018 and charges to earnings related to impairments as a result of the EGTP assets in 2017.
(c) Primarily reflects merger and integration costs associated with the PHI and FitzPatrick acquisitions, including, if and when applicable, professional fees, employee-related

expenses and integration activities.

(d) Primarily represents the announcement to early retire the Oyster Creek nuclear facility, a charge associated with a remeasurement of the Oyster Creek ARO compared to

the previous decision to early retire the TMI nuclear facility in 2017.

(e) Primarily reflects decreased spending related to energy efficiency projects and decreased costs related to the sale of Generation's electrical contracting business.
(f) Primarily reflects the reversal of previously accrued vacation expenses as a result of a change in Exelon's vacation vesting policy.

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Table of Contents

Impairment and related charges of certain generating assets (b)
Merger and integration costs

ARO update (c)
Pension and non-pension postretirement benefits expense (c)

BSC costs

Plant retirements and divestitures (d)
Accretion expense (e)
Nuclear refueling outage costs, including the co-owned Salem plant (f)
Merger commitments (g)
Labor, other benefits, contracting and materials (h)
Cost management program

Curtailment of Generation growth and development activities (i)
Vacation policy change (j)
Allowance for uncollectible accounts

Change in environmental liabilities

Other

Increase in operating and maintenance expense

Increase (Decrease) 
2017 vs. 2016 (a)

307

13

84

10

23

127

35

104

(53)

38

(2)

(24)

(40)

33

44

(63)

636

$

$

Includes the ownership of the FitzPatrick nuclear facility from March 31, 2017.

__________
(a)
(b) Primarily reflects charges to earnings related to impairments as a result of the EGTP assets in 2017 and impairment of Upstream assets and certain wind projects in 2016.
(c) Primarily reflects the non-cash benefit pursuant to the annual update of the nuclear decommissioning obligation related to the non-regulatory units in 2017 compared to

2016.

(d) Primarily represents the announcement of the early retirement of the TMI nuclear facility in 2017 compared to the previous decision to early retire the Clinton and Quad

Cities nuclear facilities in 2016.

(e) Reflects the impact of increased accretion expenses primarily due to the acquisition of FitzPatrick on March 31, 2017.
(f) Primarily reflects an increase in the number of nuclear outage days during 2017 compared to 2016.
(g) Primarily represents costs incurred as part of the settlement orders approving the PHI merger during 2016.
(h) Reflects increased salaries, wages and contracting costs primarily related to the acquisition of the FitzPatrick nuclear facility beginning on March 31, 2017.
(i) Reflects the one-time recognition for a loss on sale of assets and asset impairment charges pursuant to Generation's strategic decision in the fourth quarter of 2016 to

narrow the scope and scale of its growth and development activities.

(j) Represents the reversal of previously accrued vacation expenses as a result of a change in Exelon's vacation vesting policy.

Depreciation and amortization expense for the year ended December 31, 2018 compared to the year ended December 31, 2017 increased primarily due to
accelerated  depreciation  and  amortization  expenses  associated  with  the  decision  to  early  retire  the  Oyster  Creek  nuclear  facility  in  2018  compared  to  the
previous decision to early retire the TMI nuclear facility in 2017.

Depreciation and amortization expense for the year ended December 31, 2017 compared to the year ended December 31, 2016 decreased primarily due to
accelerated depreciation and increased nuclear decommissioning amortization related to the previous decision to early retire the Clinton and Quad Cities nuclear
facilities in 2016 compared to the decision to early retire the TMI nuclear facility in 2017.

Gain (loss) on sales of assets and businesses for the year ended December 31, 2018 compared to the year ended December 31, 2017 increased due to
Generation's 2018 sale of its electrical contracting business.

Gain (loss) on sales of assets and businesses for the year ended December 31, 2017 compared to the year ended December 31, 2016 increased primarily
due  to  certain  Generation  projects  and  contracts  being  terminated  or  renegotiated  in  2016,  partially  offset  by  a  gain  associated  with  Generation's  sale  of  the
retired New Boston generating site in 2016.

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Bargain purchase gain for the year ended December 31, 2018 compared to the year ended December 31, 2017 . decreased as a result of the gain associated
with the FitzPatrick acquisition. See Note 5 — Mergers, Acquisitions and Dispositions of the Combined Notes to Consolidated Financial Statements for additional
information.

Gain  on  deconsolidation  of  business  for  the  year  ended  December  31,  2018  compared  to  the  year  ended  December  31,  2017  decreased  due  to  the
deconsolidation of EGTP's net liabilities, which included the previously impaired assets and related debt, as a result of the November 2017 bankruptcy filing. See
Note 5 — Mergers, Acquisitions and Dispositions of the Combined Notes to Consolidated Financial Statements for additional information.

Other,  Net  decreased  primarily  due  to  the  net  decrease  in  unrealized  gains  related  to  the  NDT  funds  of  Generation’s  Non-Regulatory  Agreement  Units  as
described  in  the  table  below.    Other,  net  also  reflects  $45  million  , $209  million  and $80  million  for  the  years  ended  December  31,  2018  , 2017 and 2016
respectively, related to the contractual elimination of income tax expense (benefit) associated with the NDT funds of the Regulatory Agreement Units. See Note
15 — Asset Retirement Obligations of the Combined Notes to Consolidated Financial Statements for additional information regarding NDT funds.

The following table provides unrealized and realized gains (losses) on the NDT funds of the Non-Regulatory Agreement Units:

Net unrealized (losses) gains on NDT funds

Net realized gains on sale of NDT funds

2018

2017

2016

$

(483)   $

180  

521   $

95  

194

35

Effective income tax rates were (29.5)% , (94.6)% and 32.9% for the years ended December 31, 2018, 2017 and 2016, respectively. The increase is primarily
related to impacts associated with the one-time remeasurement of deferred income taxes in 2017 as a result of the TCJA. See Note 14 — Income Taxes of the
Combined Notes to Consolidated Financial Statements for additional information of the change in the effective income tax rate.

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Results of Operations—ComEd

Operating revenues

Purchased power expense

Revenues net of purchased power expense

Other operating expenses

Operating and maintenance

Depreciation and amortization

Taxes other than income

Total other operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

2018

2017

Favorable (unfavorable)
2018 vs. 2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

$

5,882   $

5,536   $

346   $

5,254   $

2,155  

3,727  

1,641  

3,895  

(514)

(168)

1,458  

3,796  

1,335  

1,427  

92  

1,530  

940  

311  

2,586  

5  

1,146  

(347)  

33  

(314)  

832  

168  

850  

296  

2,573  

1  

1,323  

(361)  

22  

(339)  

984  

417  

(90)

(15)

(13)

4  

(177)

14  

11  

25  

(152)

249  

775  

293  

2,598  

7  

1,205  

(461)  

(65)  

(526)  

679  

301  

$

664   $

567   $

97   $

378   $

282

(183)

99

103

(75)

(3)

25

(6)

118

100

87

187

305

(116)

189

Year  Ended  December  31,  2018  Compared  to  Year  Ended  December  31,  2017  .  Net  income  increased  by  $97  million  primarily  due  to  higher  electric
distribution and energy efficiency formula rate earnings (reflecting the impacts of increased capital investment). The TCJA did not significantly impact Net income
as the favorable income tax impacts were predominantly offset by lower revenues resulting from the pass back of the tax savings through customer rates.

Year Ended December 31, 2017 Compared to Year Ended December 31, 2016 . Net income increased $189 million primarily due to the recognition of the
penalty  and  the  after-tax  interest  due  on  the  asserted  penalty  related  to  the  Tax  Court's  decision  on  Exelon's  like-kind  exchange  tax  position  in  2016  and
increased  electric  distribution  and  transmission  formula  rate  earnings  (reflecting  the  impacts  of  increased  capital  investment  and  higher  allowed  electric
distribution  ROE).  The  higher  Net  income  was  partially  offset  by  the  impact  of  weather  conditions  in  2016.  See  Revenue  Decoupling  discussion  below  for
additional information on the impact of weather.

Revenues  Net  of  Purchased  Power  Expense.  There  are  certain  drivers  of  Operating  revenues  that  are  fully  offset  by  their  impact  on  Purchased  power
expense,  such  as  commodity,  REC  and  ZEC  procurement  costs  and  participation  in  customer  choice  programs.  ComEd  recovers  electricity,  REC  and  ZEC
procurement costs from customers without mark-up. Therefore, fluctuations in these costs have no impact on RNF.

Customers  have  the  choice  to  purchase  electricity  from  a  competitive  electric  generation  supplier.  Customer  choice  programs  do  not  impact  the  volume  of
deliveries, but do impact Operating revenues related to supplied electricity.

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The changes in RNF consisted of the following:

Weather (a)

Volume (a)

Pricing and customer mix (a)
Electric distribution revenue

Transmission revenue

Energy efficiency revenue (b)

Regulatory required programs (b)

Uncollectible accounts recovery, net

Other

Total (decrease) increase

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

—   $

—  

—  

(127)  

(43)  

47  

(97)  

6  

46  

(168)   $

(36)

(5)

(18)

170

60

16

(85)

(7)

4

99

__________
(a) For the year ended December 31, 2017, compared to the same period in 2016, the changes reflect the 2016 impacts of weather, volume and pricing and customer mix.
Pursuant  to  the  revenue  decoupling  provision  in  FEJA,  ComEd  began  recording  an  adjustment  to  revenue  in  the  first  quarter  of  2017  to  eliminate  the  favorable  or
unfavorable impacts associated with variations in delivery volumes associated with above or below normal weather, number of customers or usage per customer.

(b) Beginning  June  1,  2017,  ComEd  is  deferring  energy  efficiency  costs  as  a  regulatory  asset  that  will  be  recovered  through  the  energy  efficiency  formula  rate  over  the

weighted average useful life of the related energy efficiency measures.

Revenue Decoupling. The demand for electricity is affected by weather and customer usage. However, beginning January 1, 2017, Operating revenues are not
impacted by abnormal weather, usage per customer or number of customers as a result of a change to the electric distribution formula rate pursuant to FEJA.

Distribution Revenue. EIMA and FEJA provide for a performance-based formula rate, which requires an annual reconciliation of the revenue requirement in
effect to the actual costs that the ICC determines are prudently and reasonably incurred in a given year. Electric distribution revenue varies from year to year
based upon fluctuations in the underlying costs, investments being recovered and allowed ROE. During the year ended December 31, 2018 , as compared to
the same period in 2017 , electric distribution revenue decreased $127 million , primarily due to the impact of the lower federal income tax rate, partially offset by
increased revenues due to higher rate base and increased Depreciation expense. During the year ended December 31, 2017 , as compared to the same period
in 2016 ,  electric  distribution  revenue  increased  $170 million ,  primarily  due  to  increased  capital  investment,  increased  Depreciation  expense,  higher  allowed
ROE due to an increase in treasury rates and revenue decoupling impacts (as described above). See Operating and Maintenance Expense below and Note  4
— Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information.

Transmission  Revenue.  Under  a  FERC-approved  formula,  transmission  revenue  varies  from  year  to  year  based  upon  fluctuations  in  the  underlying  costs,
capital  investments  being  recovered  and  the  highest  daily  peak  load,  which  is  updated  annually  in  January  based  on  the  prior  calendar  year.  Generally,
increases/decreases  in  the  highest  daily  peak  load  will  result  in  higher/lower  transmission  revenue.  Transmission  revenue  decreased  for  the  year  ended
December 31, 2018 , primarily due to decreased peak load and the impact of the lower federal tax rate, partially offset by increased revenues due to higher rate
base  and  increased  Depreciation  expense.  Transmission  revenue  increased  for  the  year  ended  December  31,  2017  ,  primarily  due  to  increased  capital
investment,  higher  Depreciation  expense,  and  increased  highest  daily  peak  load.  See  Operating  and  Maintenance  Expense  below  and  Note  4 — Regulatory
Matters of the Combined Notes to Consolidated Financial Statements for additional information.

Energy  Efficiency  Revenue.  Beginning  June  1,  2017,  FEJA  provides  for  a  performance-based  formula  rate,  which  requires  an  annual  reconciliation  of  the
revenue requirement in effect to the actual costs that the ICC determines are prudently and reasonably incurred in a given year. Under FEJA, energy efficiency
revenue  varies  from  year  to  year  based  upon  fluctuations  in  the  underlying  costs,  investments  being  recovered,  and  allowed  ROE.  See  Depreciation  and
amortization  expense  discussions  below  and  Note  4  —  Regulatory  Matters  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional
information.

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Regulatory Required Programs represent revenues collected under approved rate riders to recover costs incurred for regulatory programs such as purchased
power  administrative  costs  and  energy  efficiency  and  demand  response  through  June  1,  2017  pursuant  to FEJA.  The  riders are  designed  to  provide  full and
current cost recovery. The costs of such programs are included in Operating and maintenance expense. Revenues from regulatory programs decreased for the
year ended December 31, 2018 , as compared to the same period in 2017 , and for the year ended December 31, 2017 , as compared to the same period in
2016 , primarily due to the fact that beginning on June 1, 2017, ComEd is deferring energy efficiency costs as a regulatory asset that will be recovered through
the energy efficiency formula rate over the weighted average useful life of the related energy efficiency measures.

Uncollectible  Accounts  Recovery,  Net  represents  recoveries  under  the  uncollectible  accounts  tariff.  See  Operating  and  maintenance  expense  discussion
below for additional information on this tariff.

Other revenue includes rental revenue, revenue related to late payment charges, mutual assistance revenues and recoveries of environmental costs associated
with  MGP  sites.  The  increase  in  Other  revenue  for  the  years  ended  December  31,  2018,  as  compared  to  the  same  period  in  2017 primarily reflects mutual
assistance  revenues  associated  with  hurricane  and  winter  storm  restoration  efforts.  An  equal  and  offsetting  amount  has  been  included  in  Operating  and
maintenance expense and Taxes other than income.

See Note 24 — Segment Information of the Combined Notes to Consolidated Financial Statements for the presentation of ComEd's revenue disaggregation.

The changes in Operating and maintenance expense consisted of the following:

Baseline

Labor, other benefits, contracting and materials (a)
Pension and non-pension postretirement benefits expense

Storm costs

Uncollectible accounts expense—provision (b)

Uncollectible accounts expense—recovery, net (b)
BSC costs (a)(c)

Other (a)

Regulatory required programs

Energy efficiency and demand response programs (d)

Decrease in operating and maintenance expense

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

20   $

—  

(19)

5  

1  

(5)

3  

5  

(97)

(92)

  $

(41)

3

2

(6)

(1)

44

(19)

(18)

(85)

(103)

__________
(a)

Includes costs associated with mutual assistance provided to other utilities in 2018. An equal and offsetting increase has been recognized in Operating revenues for the
period presented.

(b) ComEd is allowed to recover from or refund to customers the difference between its annual uncollectible accounts expense and the amounts collected in rates annually

through a rider mechanism. An equal and offsetting amount has been recognized in Operating revenues for the periods presented.

(c) For the year ended December 31, 2017, primarily reflects increased information technology support services from BSC and includes the $8 million write-off of a regulatory

asset related to Constellation merger and integration costs for which recovery is no longer expected.

(d) Beginning June 1, 2017 ComEd is deferring energy efficiency costs as a regulatory asset that will be recovered through the energy efficiency over the weighted average

useful life of the related energy efficiency measures.

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The increases in Depreciation and amortization expense consisted of the following:

Depreciation expense (a)

Regulatory asset amortization (b)
Other

Total increase

Increase 
2018 vs. 2017

Increase 
2017 vs. 2016

$

$

36   $

53  

1  

90   $

60

7

8

75

__________
(a) Primarily reflects ongoing capital expenditures.
(b) Beginning in June 2017, includes amortization of ComEd's energy efficiency formula rate regulatory asset.

The decrease in Interest expense , net, for the year ended 2018 compared to the same period in 2017 , and for the year ended 2017 compared to the same
period in 2016 , consisted of the following:

Interest expense related to uncertain tax positions (a)

Interest expense on debt (including financing trusts)

Other

Decrease in interest expense, net

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

(13)

  $

2  

(3)

(14)

  $

(104)

6

(2)

(100)

__________
(a) Primarily reflects the recognition of after-tax interest related to the Tax Court's decision on Exelon's like-kind exchange tax position in the 2016 and 2017. See Note  14 —

Income Taxes of the Combined Notes to Consolidated Financial Statements for additional information.

The increase in Other, net , for the year ended 2018 compared to the same period in 2017 , and for the year ended 2017 compared to the same period in 2016 ,
consisted of the following:

Other income and deductions, net (a)

AFUDC equity

Other

Increase (decrease) in Other, net

Increase 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

1   $

7  

3  

11   $

88

(2)

1

87

__________
(a) Primarily reflects the recognition of the penalty related to the Tax Court's decision on Exelon's like-kind exchange tax position in 2016.

Effective  income  tax  rates  for  the  years  ended  December 31, 2018 , 2017 and 2016 , were 20.2% , 42.4% and 44.3% ,  respectively.  The  decrease  in the
effective income tax rate for the year ended December 31, 2018 , compared to the same period in 2017 is primarily due to the lower federal income tax rate as a
result of the TCJA. The decrease in the effective income tax rate for the year ended December 31, 2017 , compared to the same period in 2016 is primarily due
to the recognition of a non-deductible penalty related to the Tax Court's decision on Exelon's like-kind exchange tax position in the third quarter of 2016. See
Note 14 — Income Taxes of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  the  components  of  the  effective
income tax rates.

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Results of Operations—PECO

Operating revenues

Purchased power and fuel expense

Revenues net of purchased power and fuel expense

Other operating expenses

Operating and maintenance

Depreciation and amortization

Taxes other than income

Total other operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

2018

2017

Favorable (unfavorable)
2018 vs. 2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

$

3,038   $

2,870   $

168   $

2,994   $

1,090  

1,948  

898  

301  

163  

1,362  

1  

587  

(129)  

8  

(121)  

466  

6  

969  

1,901  

806  

286  

154  

1,246  

—  

655  

(126)  

9  

(117)  

538  

104  

(121)

47  

(92)

(15)

(9)

(116)

1  

(68)

(3)

(1)

(4)

(72)

98  

1,047  

1,947  

811  

270  

164  

1,245  

—  

702  

(123)  

8  

(115)  

587  

149  

$

460   $

434   $

26   $

438   $

(124)

78

(46)

5

(16)

10

(1)

—

(47)

(3)

1

(2)

(49)

45

(4)

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 . Net income was higher due to favorable weather and volumes. The TCJA
did not significantly impact Net Income as the favorable income tax impacts were predominantly offset by lower revenues resulting from the requirement to pass
back the tax savings through customer rates.

Year Ended December 31, 2017 Compared to Year Ended December 31, 2016 . Net income was lower primarily due to unfavorable weather. The TCJA did
not significantly impact Net Income  as the  favorable  income tax  impacts were predominantly  offset by lower revenues resulting  from the requirement  to pass
back the tax savings through customer rates.

Revenues Net of Purchased Power and Fuel Expense.  There are certain drivers of Operating revenues that are fully offset by their impact on Purchased
power and fuel expenses such as commodity and REC procurement costs and participation in customer choice programs. PECO's recovers electricity, natural
gas and REC procurement costs from customers without mark-up. Therefore, fluctuations in these costs have no impact on RNF.

Customers have the choice to purchase electricity and natural gas from competitive electric generation and natural gas suppliers. Customer choice programs do
not impact the volume of deliveries or RNF, but impact Operating revenues related to supplied electricity and natural gas.

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The changes in RNF consisted of the following:

Weather

Volume

Pricing

Regulatory required programs

Other

Total increase (decrease)

$

$

2018 vs. 2017

Increase (Decrease)

2017 vs. 2016

Increase (Decrease)

Electric

Gas

Total

Electric

Gas

Total

39   $

22   $

61   $

(28)   $

4   $

37  

(75)  

11  

14  

4  

(1)  

—  

(4)  

41  

(76)  

11  

10  

(18)  

8  

(31)  

14  

3  

2  

—  

—  

26   $

21   $

47   $

(55)   $

9   $

(24)

(15)

10

(31)

14

(46)

Weather. The  demand  for  electricity  and  natural  gas  is  affected  by  weather  conditions.  With  respect  to  the  electric  business,  very  warm  weather  in  summer
months  and,  with  respect  to  the  electric  and  natural  gas  businesses,  very  cold  weather  in  winter  months  are  referred  to  as  “favorable  weather  conditions”
because these weather conditions result in increased deliveries of electricity and natural gas. Conversely, mild weather reduces demand. For the year ended
December 31, 2018 compared to the same period in 2017 RNF was increased by the impact of favorable weather conditions in PECO's service territory. For the
year ended December 31, 2017 compared to the same period in 2016 RNF was reduced by the impact of unfavorable weather conditions in PECO’s service
territory.

Heating  and  cooling  degree  days  are  quantitative  indices  that  reflect  the  demand  for  energy  needed  to  heat  or  cool  a  home  or  business.  Normal  weather  is
determined based on historical average heating and cooling degree days for a 30-year period in PECO’s service territory. The changes in heating and cooling
degree days in PECO’s service territory for the years ended  December 31, 2018 and December 31, 2017 compared to the same periods in 2017 and 2016 ,
respectively, and normal weather consisted of the following:

Heating and Cooling Degree-Days
Heating Degree-Days

Cooling Degree-Days

2018

2017

Normal

2018 vs. 2017

2018 vs. Normal

4,539  

1,584  

3,949  

1,490  

4,487  

1,411  

14.9 %  

6.3 %  

1.2 %

12.3 %

For the Years Ended December 31,

% Change

Heating and Cooling Degree-Days
Heating Degree-Days

Cooling Degree-Days

2017

2016

Normal

2017 vs. 2016

2017 vs. Normal

3,949  

1,490  

4,041  

1,726  

4,603  

1,290  

(2.3)%  

(13.7)%  

(14.2)%

15.5 %

For the Years Ended December 31,

% Change

Volume. Delivery  volume,  exclusive  of  the  effects  of  weather,  for  the  year  ended  December 31, 2018 compared  to  the  same  period  in  2017 , was driven by
electric and primarily reflects the impact of moderate economic and customer growth partially offset by the impact of energy efficiency initiatives on customer
usages  primarily  in  the  residential  class.  Additionally,  the  increase  represents  a  shift  in  the  volume  profile  across  classes  from  the  commercial  and  industrial
classes to the residential class.

Delivery volume, exclusive of the effects of weather, for the year ended December 31, 2017 compared to the same period in 2016, was driven by electric and
primarily reflects the impact of energy efficiency initiatives on customer usages for residential and small commercial and industrial electric classes, partially offset
by solid customer growth. Additionally, the decrease represents a shift in the volume profile across classes from residential and small commercial and industrial
to large commercial and industrial.

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Electric Retail Deliveries to Customers (in
GWhs)

2018

2017

% Change 2018 vs.
2017

Weather - Normal %
Change

2016

% Change 2017 vs.
2016

Weather - Normal %
Change

Retail Deliveries (a)
Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric
railroads

Total electric retail deliveries

14,005  

8,177  

15,516  

13,024  

7,968  

15,426  

761  

809  

38,459  

37,227  

7.5 %  

2.6 %  

0.6 %  

(5.9)%  

3.3 %  

3.5 %  

0.2 %  

0.4 %  

(5.6)%  

1.4 %  

13,664  

8,099  

15,263  

890  

37,916  

(4.7)%  

(1.6)%  

1.1 %  

(9.1)%  

(1.8)%  

(1.8)%

(1.1)%

1.4 %

(9.1)%

(0.5)%

__________
(a) Reflects  delivery  volumes  and  revenue  from  customers  purchasing  electricity  directly  from  PECO  and  customers  purchasing  electricity  from  a  competitive  electric

generation supplier as all customers are assessed distribution charges.

Number of Electric Customers
Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

Total

As of December 31,

2018

2017

2016

1,480,925  

152,797  

3,118  

9,565  

1,469,916  

151,552  

3,112  

9,569  

1,456,585

150,142

3,096

9,823

1,646,405  

1,634,149  

1,619,646

Natural Gas Deliveries to customers (in
mmcf)

2018

2017

% Change 2018 vs.
2017

Weather-
Normal %
Change

2016

% Change 2017 vs.
2016

Weather-
Normal %
Change

Retail Deliveries (a)
Residential

Small commercial & industrial

Large commercial & industrial

Transportation

Total natural gas deliveries

43,450  

21,997  

65  

26,595  

92,107  

37,919  

20,515  

23  

26,382  

84,839  

14.6%  

7.2%  

182.6%  

0.8%  

8.6%  

1.8 %  

(0.4)%  

175.8 %  

(3.2)%  

(0.2)%  

36,872  

19,525  

50  

27,630  

84,077  

2.8 %  

5.1 %  

(54.0)%  

(4.5)%  

0.9 %  

0.6 %

1.9 %

28.3 %

(2.3)%

0.1 %

__________
(a) Reflects  delivery  volumes  and  revenue  from  customers  purchasing  electricity  directly  from  PECO  and  customers  purchasing  electricity  from  a  competitive  electric

generation supplier as all customers are assessed distribution charges.

Number of Gas Customers
Residential

Small commercial & industrial

Large commercial & industrial

Transportation

Total

As of December 31,

2018

2017

2016

482,255  

44,170  

1  

754  

477,213  

43,887  

5  

771  

472,606

43,664

4

790

527,180  

521,876  

517,064

Pricing for  the  year  ended  December  31,  2018  compared  to  the  same  period  in  2017 reflects  the  anticipated  pass  back  of  the  Tax  Cuts  and  Jobs  Act  tax
savings through customer rates.

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The increase in Operating revenues net of purchased power and fuel expense as a result of pricing for the year ended  December 31, 2017 compared to the
same  period  in  2016 reflects  higher  overall  effective  rates  due  to  decreased  usage  in  the  residential  and  small  commercial  and  industrial  customer  classes.
Operating revenues net of fuel expense as a result of pricing remained relatively consistent. See Note 4 — Regulatory Matters for additional information.

Regulatory Required Programs represent revenues collected under approved riders to recover costs incurred for regulatory programs such as smart meter,
energy efficiency and the GSA. The riders are designed to provide full and current cost recovery as well as a return. The costs of these programs are included in
Operating and maintenance expense, Depreciation and amortization expense and Income taxes.

Other revenue includes rental revenue, revenue related to late payment charges, mutual assistance revenues and wholesale transmission revenue.

See Note 24 — Segment Information of the Combined Notes to Consolidated Financial Statements for the presentation of PECO's revenue disaggregation.

The changes in Operating and maintenance expense consisted of the following:

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

Baseline

Labor, other benefits, contracting and materials

Storm-related costs (a)

Pension and non-pension postretirement benefits expense

BSC costs

Uncollectible accounts expense

Other

Regulatory required programs

Energy efficiency

Other

$

10   $

63  

(7)

—  

7  

9  

82  

10  

—  

10  

Increase (decrease) in operating and maintenance expense

__________
(a) Reflects increased costs incurred from the Q1 2018 winter storms.

The changes in Depreciation and amortization expense consisted of the following:

$

92   $

17

(7)

(3)

4

(5)

—

6

(10)

(1)

(11)

(5)

Depreciation expense (a)

Regulatory asset amortization

Increase in depreciation and amortization expense

__________
(a) Depreciation expense increased due to ongoing capital expenditures.

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

13   $

2  

15

$

17

(1)

16

Taxes  other  than  income  increased  for  the  year  ended  December 31, 2018 ,  compared  to  the  same  period  in  2017 ,  primarily  due  to  an  increase  in  gross
receipts tax driven by increased electric revenue.

Taxes  other  than  income  decreased  for  the  year  ended  December  31,  2017  ,  compared  to  the  same  period  in  2016 ,  primarily  due  to  a  decrease  in  gross
receipts tax driven by decreases in electric revenue.

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Effective income tax rates were 1.3% , 19.3% and 25.4% for the years ended December 31, 2018 , 2017 and 2016 , respectively. The decrease is primarily
due to the lower federal income tax rate as a result of the TCJA. See Note 14 — Income Taxes of the Combined Notes to Consolidated Financial Statements for
additional information of the change in effective income tax rates.

Results of Operations—BGE

2018

2017

Favorable (unfavorable)
2018 vs. 2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

Operating revenues

$

Purchased power and fuel expense

Revenues net of purchased power and fuel
expense

Other operating expenses

3,169   $

1,182  

3,176   $

1,133  

1,987  

2,043  

Operating and maintenance

Depreciation and amortization

Taxes other than income

Total other operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

Preference stock dividends

Net income attributable to common
shareholder

777  

483  

254  

1,514  

1  

474  

(106)  

19  

(87)  

387  

74  

313  

—  

716  

473  

240  

1,429  

—  

614  

(105)  

16  

(89)  

525  

218  

307  

—  

(7)

  $

(49)

(56)

(61)

(10)

(14)

(85)

1

(140)

(1)

3

2

(138)

144

6

—  

3,233   $

1,294  

1,939  

737  

423  

229  

1,389  

—  

550  

(103)  

21  

(82)  

468  

174  

294  

8  

(57)

161

104

21

(50)

(11)

(40)

—

64

(2)

(5)

(7)

57

(44)

13

8

21

$

313   $

307   $

6

  $

286   $

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 . Net income attributable to common shareholder increased by $6 million
primarily due to an increase in transmission formula rate revenues and the absence of the 2017 impairment of certain transmission-related income tax regulatory
assets offset by increased storm restoration costs as a result of storms in March 2018 and September 2018. The TCJA did not significantly impact Net income
attributable to common shareholder as the favorable income tax impacts were predominantly offset by lower revenues resulting from the pass back of the tax
savings through customer rates.

Year Ended December 31, 2017 Compared to Year Ended December 31, 2016 . Net income attributable to common shareholder increased by $21 million
primarily  due  to  the  impacts  of  the  electric  and  natural  gas  distribution  rate  orders  issued  by  the  MDPSC  in  June  2016  and  July  2016,  an  increase  in
transmission formula rate revenues, the absence of cost disallowances resulting from the 2016 distribution rate orders issued by the MDPSC, and decreased
storm  costs  in  2017.  These  increases  were  partially  offset  by  the  favorable  2016  settlement  of  the  Baltimore  City  conduit  fee  dispute,  the  initiation  of  cost
recovery  of  the  AMI  programs  under  the  distribution  rate  orders  and  increased  capital  investment,  higher  income  tax  expense  primarily  resulting  from  higher
taxable income as well as a 2016 favorable adjustment, and the 2017 impairment of certain transmission-related income tax regulatory assets.

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Revenues  Net  of  Purchased  Power  and  Fuel  Expense.  There  are  certain  drivers  to  Operating  revenues  that  are  fully  offset  by  their  impact  on  Purchased
power and fuel expense, such as commodity procurement costs and participation in customer choice programs. BGE recovers electricity, natural gas and other
procurement costs from customers without mark-up. Therefore, fluctuations in these costs have no impact on RNF.

Customers have the choice to purchase electricity and natural gas from electric generation and natural gas competitive suppliers. Customer choice programs do
not impact the volume of deliveries or RNF but impact Operating revenues related to supplied electricity and natural gas.

The changes in RNF consisted of the following:

2018 vs. 2017

Increase (Decrease)

2017 vs. 2016

Increase (Decrease)

Electric

Gas

Total

Electric

Gas

Total

Distribution rate increase (decrease)

Regulatory required programs

Transmission revenue

Other, net

Total (decrease) increase

$

$

(62)   $

(28)   $

(90)   $

21   $

29   $

2  

15  

5  

2  

—  

10  

4  

15  

15  

17  

18  

5  

3  

—  

11  

(40)   $

(16)

$

(56)   $

61   $

43   $

50

20

18

16

104

Revenue Decoupling. The demand for electricity and natural gas is affected by weather and customer usage. However, Operating revenues are not impacted
by  abnormal  weather  or  usage  per  customer  as  a  result  of  a  bill  stabilization  adjustment  (BSA)  that  provides  for  a  fixed  distribution  charge  per  customer  by
customer  class.  While  Operating  revenues  are  not  impacted  by  abnormal  weather  or  usage  per  customer,  they  are  impacted  by  changes  in  the  number  of
customers.

Number of Electric Customers
Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

Total

Number of Gas Customers
Residential

Small commercial & industrial

Large commercial & industrial

Total

As of December 31,

2018

2017

2016

1,168,372  

1,160,783  

1,150,096

113,915  

12,253  

262  

113,594  

12,155  

272  

113,230

12,053

280

1,294,802  

1,286,804  

1,275,659

As of December 31,

2018

2017

2016

633,757  

38,332  

5,954  

678,043  

629,690  

38,392  

5,855  

673,937  

623,647

37,941

6,314

667,902

Distribution Revenues decreased during the year ended December 31, 2018 , compared to the same period in 2017 , primarily due to the impact of reduced
distribution rates to reflect the lower federal income tax rate and increased during the year ended December 31, 2017 , compared to the same period in 2016 ,
primarily due to the impact of the electric and natural gas distribution rate changes that became effective in June 2016 in accordance with the electric and natural
gas distribution rate case orders in June 2016 and July 2016 . See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements
for additional information.

Regulatory Required Programs represent revenues collected under approved riders to recover costs incurred for regulatory programs such as conservation,
demand response, STRIDE, and the POLR mechanism. The riders are

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designed  to  provide  full  and  current  cost  recovery,  as  well  as  a  return  in  certain  instances.  The  costs  of  these  programs  are  included  in  Operating  and
maintenance expense, Depreciation and amortization expense and Taxes other than income.

Transmission  Revenue.  Under  a  FERC  approved  formula,  transmission  revenue  varies  from  year  to  year  based  upon  fluctuations  in  the  underlying  costs,
capital  investments  being  recovered  and  the  highest  daily  peak  load,  which  is  updated  annually  in  January  based  on  the  prior  calendar  year.  Generally,
increases/decreases  in  the  highest  daily  peak  load  will  result  in  higher/lower  transmission  revenue.  Transmission  revenue  increased  during  the  years  ended
December  31,  2018  and  2017  primarily  due  to  increases  in  capital  investment  and  operating  and  maintenance  expense  recoveries.  See  Operating  and
maintenance expense below and Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information.

Other revenue includes revenue related to late payment charges, mutual assistance revenues, off-system sales and service application fees.

See Note 24 — Segment Information of the Combined Notes to Consolidated Financial Statements for the presentation of BGE's revenue disaggregation.

The changes in Operating and maintenance expense consisted of the following:

Baseline

Impairment on long-lived assets and losses on regulatory assets (a)

Labor, other benefits, contracting and materials

Pension and non-pension postretirement benefits expense

Storm-related costs (b)

Uncollectible accounts expense

BSC costs

Conduit lease settlement (c)

Other

Regulatory Required Programs

Other

Total (decrease) increase

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

$

—   $

18  

(2)

39  

2  

7  

—  

3  

67   $

(6)

61   $

(50)

(11)

—

(13)

7

16

15

7

(29)

8

(21)

__________
(a) See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information on Smart Meter and Smart Grid Investments.
(b) Reflects increased storm restoration costs incurred from storms in Q1 2018 and Q3 2018.
(c) See Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional information.

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The changes in Depreciation and amortization expense consisted of the following:

Depreciation expense (a)

Regulatory asset amortization (b)
Regulatory required programs

Increase in depreciation and amortization expense

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

25   $

(24)

9  

10   $

13

25

12

50

__________
(a) Depreciation expense increased due to ongoing capital expenditures.
(b) Regulatory asset amortization decreased for the year ended  December 31, 2018 compared to the same period in 2017 , primarily due to certain regulatory assets that
became fully amortized as of December 31, 2017 and increased for the year ended December 31, 2017 compared to the same period in 2016 , primarily due to energy
efficiency programs and the initiation of cost recovery of the AMI programs under the final electric and natural gas distribution rate case order issued by the MDPSC in
June 2016. See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information.

Taxes other than income increased for the year ended December 31, 2018 compared to the same period in 2017 , and for the year ended December 31, 2017
compared to the same period in 2016 , primarily due to an increase in property taxes.

Effective income tax rates were 19.1% , 41.5% and 37.2% for the years ended December 31, 2018 , 2017 and 2016 , respectively. Income taxes decreased
for the year ended December 31, 2018 compared to the same period in 2017 , primarily due to the lower federal income tax rate as a result of the TCJA. See
Note 14 — Income Taxes of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  the  components  of  the  effective
income tax rates.

Results of Operations—PHI

PHI’s results of operations include the results of its three reportable segments, Pepco, DPL and ACE. PHI also has a business services subsidiary, PHISCO,
which  provides  a  variety  of  support  services  and  the  costs  are  directly  charged  or  allocated  to  the  applicable  subsidiaries.  Additionally,  the  results  of  PHI's
corporate  operations  include  interest  costs  from  various  financing  activities.  For  "Predecessor"  reporting  periods,  PHI's  results  of  operations  also  include  the
results of PES and PCI. See Note 24 — Segment Information of the Combined Notes to Consolidated Financial Statements for additional information regarding
PHI's reportable segments. All material intercompany accounts and transactions have been eliminated in consolidation.

The following tables sets forth PHI's GAAP Net Income (Loss) by Registrant. As a result of the PHI Merger, the tables present two separate reporting periods for
2016. The "Predecessor" reporting periods represent PHI's results of operations for the period of January 1, 2016 to March 23, 2016 . The "Successor" reporting
periods represents PHI's results of operations for the years ended December 31, 2018 and 2017 as well as March 24, 2016 to December 31, 2016 . See the
results of operations for Pepco, DPL, and ACE for additional information by segment.

PHI

$

398   $

362   $

36   $

(61)     $

19

For the Years Ended December 31,

Favorable (unfavorable)
2018 vs. 2017 variance

March 24 to December
31,

Successor

Predecessor

January 1 to 
March 23,

2018

2017

2016

2016

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Pepco

DPL

ACE

For the Years Ended December 31,  

Favorable (unfavorable)
2018 vs. 2017 variance

  For the Years Ended December 31,   Favorable (unfavorable)
2017 vs. 2016 variance

2018

2017

$

210   $

205   $

120  

75  

121  

77  

2017

2016

  $

205   $

42   $

121  

77  

(9)  

(42)  

5

(1)

(2)

163

130

119

Other (a)
_________
(a) Primarily includes eliminating and consolidating adjustments, PHI’s corporate operations, shared service entities and other financing activities. Not included for 2016 due

n/a

34

(41)  

(41)  

n/a  

(7)  

to PHI Predecessor periods not being comparable.

Successor Year Ended December 31, 2018 Compared to Successor Year Ended December 31, 2017 . Net income increased by $36 million primarily due
to distribution rate increases (not reflecting the impact of the TCJA), favorable weather and volume, the absence of 2017 impairments of certain transmission-
related income tax regulatory assets and the DC sponsorship intangible asset, partially offset by an increase in asset retirement obligations primarily related to
asbestos  identified  at  the  Buzzard  Point  property  and  the  deferral  of  accumulated  merger  integration  cost  as  regulatory  assets  in  2017.  T  he  TCJA  did  not
significantly impact  Net  income  as  the  favorable  tax  impacts  were  predominantly  offset  by  lower  revenues  resulting  from  the  pass  back  of  the  tax  savings
through customer rates.

Successor Period of March 24, 2016 to December 31, 2016 . Net loss for the Successor period of March 24, 2016 to December 31, 2016 was $61 million .
There were no significant changes in the underlying trends affecting PHI's results of operations during the Successor period March 24, 2016 to December 31,
2016  except  for  the  pre-tax  recording  of  $392  million  of  non-recurring  merger-related  costs  including  merger  integration  and  merger  commitments  within
Operating and maintenance expense.

Predecessor Period of January 1, 2016 to March 23, 2016 . Net income for the Predecessor period of January 1, 2016 to March 23, 2016 was $19 million .
There were no significant changes in the underlying trends affecting PHI's results of operations during the Predecessor period of January 1, 2016 to March 23,
2016  except  for  the  pre-tax  recording  of  $29  million  of  non-recurring  merger-related  costs  within  Operating  and  maintenance  expense  and  $18  million  of
preferred stock derivative expense within Other, net.

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Results of Operations—Pepco

Operating revenues

Purchased power expense

Revenues net of purchased power expense

Other operating expenses

Operating and maintenance

Depreciation and amortization

Taxes other than income

2018

2017

Favorable (unfavorable)
2018 vs. 2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

$

2,239   $

2,158   $

81

  $

2,186   $

654  

1,585  

501  

385  

379  

614  

1,544  

454  

321  

371  

(40)

41

(47)

(64)

(8)

(119)

(1)

(79)

(7)

(1)

(8)

(87)

92

5

706  

1,480  

642  

295  

377  

1,314  

8  

174  

(127)  

36  

(91)  

83  

41  

  $

42   $

(28)

92

64

188

(26)

6

168

(7)

225

6

(4)

2

227

(64)

163

Total other operating expenses

1,265  

1,146  

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

—  

320  

(128)  

31  

(97)  

223  

13  

1  

399  

(121)  

32  

(89)  

310  

105  

$

210   $

205   $

Year  Ended  December  31,  2018  Compared  to  Year  Ended  December  31,  2017  .  Net  income  increased  by  $5  million  primarily  due  to  higher  electric
distribution base rates (not reflecting the impact of the TCJA) in Maryland that became effective October 2017 and June 2018 and higher electric distribution
base rates (not reflecting the impact of the TCJA) in the District of Columbia that became effective August 2017 and August 2018, partially offset by an increase
in asset retirement obligations related primarily to the Buzzard Point property, deferral of accumulated merger integration costs as regulatory assets in 2017 and
higher regulatory asset amortization due to additional regulatory assets related to rate case activity. The TCJA did not significantly impact Net income as the
favorable tax impacts were predominantly offset by lower revenues resulting from pass back of tax savings through customer rates.

Year  Ended  December  31,  2017  Compared  to  Year  Ended  December  31,  2016  . Net  income  increased  by  $163  million  primarily  due  to  a  decrease  in
Operating  and  maintenance  expense  due  to  merger-related  costs  recognized  in  March  2016,  higher  electric  distribution  base  rates  in  Maryland  that  became
effective November 2016 and October 2017 and higher electric distribution base rates in the District of Columbia that became effective August 2017, partially
offset by higher depreciation expense due to increased depreciation rates in Maryland effective November 2016. Income taxes expense included unrecognized
tax benefits of $21 million for uncertain tax positions related to the deductibility of certain merger commitments in the first quarter of 2017. This decrease was
offset by an increase in income taxes due to the $14 million December 2017 impairment of certain transmission related income tax regulatory assets.

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Revenues  Net  of  Purchased  Power  Expense.  There  are  certain  drivers  of  Operating  revenues  that  are  fully  offset  by  their  impact  on  Purchased  power
expense,  such  as  commodity  and  REC  procurement  costs  and  participation  in  customer  choice  programs.  Pepco  recovers  electricity  and  REC  procurement
costs from customers with a slight mark-up. Therefore, fluctuations in these costs have minimal impact on RNF.

Customers  have  the  choice  to  purchase  electricity  from  competitive  electric  generation  suppliers.  Customer  choice  programs  do  not  impact  the  volume  of
deliveries or RNF, but impact Operating revenues related to supplied electricity.

The changes in RNF consisted of the following:

Volume

Distribution revenue

Regulatory required programs

Transmission revenues

Other

Total increase

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

12   $

(3)

35  

—  

(3)

41   $

16

66

(12)

9

(15)

64

$

$

Revenue Decoupling. The demand for electricity is affected by weather and customer usage. However, Operating revenues from electric distribution in both
Maryland  and  the  District  of  Columbia  are  not  impacted  by  abnormal  weather  or  usage  per  customer  as  a  result  of  a  bill  stabilization  adjustment  (BSA)  that
provides  for  a  fixed  distribution  charge  per  customer  by  customer  class.  While  Operating  revenues  are  not  impacted  by  abnormal  weather  or  usage  per
customer, they are impacted by changes in the number of customers.

Volume , exclusive of the effects of weather, increased for the year ended December 31, 2018 compared to the same period in 2017 , and for the year ended
2017 compared to the same period in 2016 primarily due to the impact of residential customer growth.

Number of Electric Customers

Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

Total

As of December 31,

2018

2017

2016

807,442  

54,306  

22,022  

150  

883,920  

792,211  

53,489  

21,732  

144  

867,576  

780,652

53,529

21,391

130

855,702

Distribution  Revenues  decreased  for  the  year  ended  December  31,  2018  compared  to  the  same  period  in  2017  primarily  due  to  the  impact  of  reduced
distribution rates to reflect the lower federal income tax rate, partially offset by higher electric distribution rates in Maryland that became effective in October 2017
and  June  2018  and  higher  electric  distribution  rates  in  the  District  of  Columbia  that  became  effective  August  2017  and  August  2018.  Distribution  revenues
increased  for  the  year  ended  December  31,  2017  compared  to  the  same  period  in  2016 ,  primarily  due  to  higher  electric  distribution  rates  in  Maryland  that
became effective in November 2016 and October 2017 and higher electric distribution rates in the District of Columbia that became effective August 2017. See
Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information.

Regulatory  Required  Programs  represent  revenues  collected  under  approved  riders  to  recover  costs  incurred  for  regulatory  programs  such  as  energy
efficiency programs, DC PLUG and SOS administrative costs. The riders are designed to provide full and current cost recovery as well as a return in certain
instances.  The  costs  of  these  programs  are  included  in  Operating  and  maintenance  expense,  Depreciation  and  amortization  expense  and  Taxes  other  than
income. Revenues from regulatory required programs increased for the year ended December 31, 2018 compared to the same period in 2017 primarily due to
increases in the Maryland and District of Columbia surcharge rates and sales due to higher volumes, as well as the DC PLUG surcharge which became effective
in February 2018. Revenues from regulatory required programs decreased for the year ended December 31, 2017 compared to the same period

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in 2016 primarily due to lower demand-side management program surcharge revenue due to a decrease in kWh sales and a rate decrease effective January
2017.

Transmission Revenues. Under  a  FERC  approved  formula,  transmission  revenue  varies  from  year  to  year  based  upon  fluctuations  in  the  underlying  costs,
capital  investments  being  recovered  and  the  highest  daily  peak  load,  which  is  updated  annually  in  January  based  on  the  prior  calendar  year.  Generally,
increases/decreases  in  the  highest  daily  peak  load  will  result  in  higher/lower  transmission  revenue.  Transmission  revenue  increased  for  the  year  ended
December 31, 2017 compared to the same period in 2016 due to higher rates effective June 2017.

Other revenue includes  rental  revenue,  revenue  related  to  late  payment  charges,  mutual  assistance  revenues  and  recoveries  of  other  taxes.  Other  revenue
decreased for the year ended December 31, 2017 compared to the same period in 2016 due to lower pass-through revenue primarily the result of lower sales
that resulted in a decrease in utility taxes that are collected by Pepco on behalf of the jurisdiction.

See Note 24 - Segment Information for the Combined Notes to Consolidated Financial Statements for the presentation of Pepco's revenue disaggregation.

The changes in Operating and maintenance expense consisted of the following:

Baseline

ARO update (a)

Merger costs (b)

BSC and PHISCO costs (c)

 Uncollectible accounts expense

Labor, other benefits, contracting and materials

Write-off of construction work in progress (d)

Remeasurement of AMI-related regulatory asset (e)

Other

Regulatory required programs

Total increase (decrease)

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

22   $

13  

9  

2  

(2)

—  

—  

4  

48

(1)

47   $

—

(132)

(24)

(11)

15

(14)

(7)

(9)

(182)

(6)

(188)

__________
(a) Reflects  an  increase  primarily  related  to  asbestos  identified  at  the  Buzzard  Point  property.  See  Note  15  -  Asset  Retirement  Obligations  of  the  Combined  Notes  to

Consolidated Financial Statements for additional information.

(b) Decrease in 2017 primarily due to merger-related commitments for customer rate credits and charitable contributions recognized in 2016. Increase in 2018 primarily due to

a deferral of accumulated merger integration costs as regulatory assets in 2017.

(c) Decrease in 2017 primarily related to merger severance and compensation costs recognized in 2016.
(d) Primarily resulting from a review of capital projects during the fourth quarter of 2016.
(e) Related to a remeasurement of a regulatory asset for legacy meters recognized in 2016.

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The changes in Depreciation and amortization expense consisted of the following:

Depreciation expense (a)

Regulatory asset amortization (b)

Regulatory required programs (c)

Total increase

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

14   $

25  

25  

64   $

28

8

(10)

26

_________
(a) Depreciation expense increased due to ongoing capital expenditures and higher depreciation rates in Maryland effective November 2016.
(b) Regulatory asset amortization increased due to additional regulatory assets related to rate case activity.
(c) Regulatory required programs increased as a result of higher amortization of the DC PLUG regulatory asset.

Taxes other than income for the year ended December 31, 2018 compared to the same period in 2017 increased primarily due to an increase in utility taxes
that are collected and passed through by Pepco (which is substantially offset in Operating revenues). Taxes other than income for the year ended December 31,
2017 compared to the same period in 2016 decreased primarily due to lower utility taxes that are collected and passed through by Pepco (which is substantially
offset in Operating revenues), partially offset by higher property taxes.

Gain on sales of assets for the year ended December 31, 2017 compared to the same period in 2016 decreased primarily due to the sale of land in May 2016.

Interest expense, net for the year ended December 31, 2018 compared to the same period in 2017 increased primarily due to higher outstanding debt. Interest
expense, net for the year ended December 31, 2017 compared to the same period in 2016 decreased primarily due to the recording of interest expense for an
uncertain tax position in 2016, partially offset by higher outstanding debt.

Other,  net  for  the  year  ended  December  31,  2017  compared  to  the  same  period  in  2016  decreased  primarily  due  to  the  September  2016  reversal  of
contributions in aid of construction tax gross-up reserves due to the determination that there is no legal obligation to refund customers per contract term.

Effective income tax rates for the years ended December 31, 2018 , 2017 , and 2016 were 5.8% , 33.9% , and 49.4% ,  respectively.  The  decrease  in the
effective income tax rate for the year ended December 31, 2018 compared to the same period in 2017 is primarily due to the lower federal income tax rate as a
result  of  the  TCJA.  See  Note  14  —  Income  Taxes  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  the
components of the change in effective income tax rates

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Results of Operations—DPL

Operating revenues

Purchased power and fuel expense

Revenues net of purchased power and fuel expense

Other operating expenses

Operating and maintenance

Depreciation and amortization

Taxes other than income

Total other operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income (loss)

2018

2017

Favorable (unfavorable)
2018 vs. 2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

$

1,332   $

1,300   $

32

  $

1,277   $

561  

771  

344  

182  

56  

582  

1  

190  

(58)  

10  

(48)  

142  

22  

532  

768  

315  

167  

57  

539  

—  

229  

(51)  

14  

(37)  

192  

71  

(29)

3

(29)

(15)

1

(43)

1

(39)

(7)

(4)

(11)

(50)

49

583  

694  

441  

157  

55  

653  

9  

50  

(50)  

13  

(37)  

13  

22  

$

120   $

121   $

(1)

  $

(9)   $

23

51

74

126

(10)

(2)

114

(9)

179

(1)

1

—

179

(49)

130

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 . Net income remained relatively consistent. The TCJA did not significantly
impact Net income as the favorable tax impacts were predominately offset by lower revenues resulting from the pass back of the tax savings through customer
rates.

Year Ended December 31, 2017 Compared to Year Ended December 31, 2016 . Net income increased $130 million primarily due to merger-related costs
recognized  in  March  2016,  higher  distribution  base  rates  in  Delaware  that  became  effective  July  and  December  2016  and  higher  distribution  base  rates  in
Maryland  that  became  effective  February  2017,  partially  offset  by  higher  depreciation  expense  due  to  increased  depreciation  rates  in  Maryland  effective
February 2017. Income taxes expense included unrecognized tax benefits of $16 million for uncertain tax positions related to the deductibility of certain merger
commitments in the first quarter of 2017. This decrease was offset by an increase in income taxes due to the $6 million December 2017 impairment of certain
transmission-related income tax regulatory assets.

Revenues  Net  of  Purchased  Power  and  Fuel  Expense.  There  are  certain  drivers  to  Operating  revenues  that  are  fully  offset  by  their  impact  on  Purchased
power  and  fuel  expense,  such  as  commodity  and  REC  procurement  costs  and  participation  in  customer  choice  programs.  DPL  recovers  electricity  and  REC
procurement  costs  from  customers  with  a  slight  mark-up  and  natural  gas  costs  from  customers  without  mark-up.  Therefore,  fluctuations  in  these  costs  have
minimal impact on RNF.

Customers  have  the  choice  to  purchase  electricity  from  competitive  electric  generation  suppliers.  Customer  choice  programs  do  not  impact  the  volume  of
deliveries or RNF, but impact Operating revenues related to supplied electricity.

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The changes in RNF consisted of the following:

Weather

Volume

Distribution revenue

Regulatory required programs

Transmission revenues

Other

Total increase

2018 vs. 2017

Increase (Decrease)

2017 vs. 2016

Increase (Decrease)

Electric

Gas

Total

Electric

Gas

Total

$

11   $

8   $

19   $

(7)   $

(13)   $

(20)

7  

(20)  

(2)  

6  

1  

2  

(6)  

(5)  

—  

1  

9  

(26)  

(7)  

6  

2  

2  

65  

(3)  

10  

6  

11  

4  

—  

—  

(1)  

$

3

$

— $

3

$

73

$

1

$

13

69

(3)

10

5

74

Revenue Decoupling. The demand for electricity is affected by weather and customer usage. However, Operating revenues from electric distribution customers
in Maryland are not affected by unseasonably warmer or colder weather because a bill stabilization adjustment (BSA) that provides for a fixed distribution charge
per customer by customer class. While Operating revenues from electric distribution customers in Maryland are not impacted by abnormal weather or usage per
customer, they are impacted by changes in the number of customers.

Weather. The demand for electricity and natural gas in Delaware is affected by weather conditions. With respect to the electric business, very warm weather in
summer  months  and,  with  respect  to  the  electric  and  natural  gas  businesses,  very  cold  weather  in  winter  months  are  referred  to  as  "favorable  weather
conditions” because these weather conditions result in increased deliveries of electricity and natural gas. Conversely, mild weather reduces demand. During the
year ended December 31, 2018 compared to the same period in 2017 , RNF related to weather was higher due to the impact of favorable weather conditions in
DPL's Delaware service territory. During the year ended December 31, 2017 compared to the same period in 2016 , RNF related to weather was lower due to
the impact of unfavorable weather conditions in DPL's Delaware service territory.

Heating  and  cooling  degree  days  are  quantitative  indices  that  reflect  the  demand  for  energy  needed  to  heat  or  cool  a  home  or  business.  Normal  weather  is
determined based on historical average heating and cooling degree days for a 20-year period in DPL's Delaware electric service territory and a 30-year period in
DPL's  Delaware  natural  gas  service  territory.  The  changes  in  heating  and  cooling  degree  days  in  DPL’s  Delaware  service  territory  for  the  years  ended
December 31, 2018 and December 31, 2017 compared to same periods in 2017 and 2016 , respectively, and normal weather consisted of the following:

Delaware Electric Service Territory

For the Years Ended December 31,

% Change

Heating and Cooling Degree-Days

2018

2017

Normal

2018 vs. 2017

2018 vs. Normal

Heating Degree-Days

Cooling Degree-Days

4,713  

1,456  

4,203  

1,265  

4,624  

1,210  

12.1 %  

15.1 %  

1.9 %

20.3 %

Heating and Cooling Degree-Days

2017

2016

Normal

2017 vs. 2016

2017 vs. Normal

Heating Degree-Days

Cooling Degree-Days

4,203  

1,265  

4,454  

1,463  

4,664  

1,193  

(5.6)%  

(13.5)%  

(9.9)%

6.0 %

For the Years Ended December 31,

% Change

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Delaware Natural Gas Service Territory

For the Years Ended December 31,

% Change

Heating Degree-Days

Heating Degree-Days

Heating Degree-Days

Heating Degree-Days

2018

2017

Normal

2018 vs. 2017

2018 vs. Normal

4,713  

4,203  

4,716  

12.1 %  

(0.1)%

For the Years Ended December 31,

% Change

2017

2016

Normal

2017 vs. 2016

2017 vs. Normal

4,203  

4,454  

4,739  

(5.6)%  

(11.3)%

Volume, exclusive of the effects of weather, increased for the year ended December 31, 2018 compared to the same period in 2017 primarily due to the impact
of  increased  average  residential  customer  usage  in  DPL's  Delaware  service  territory  and  overall  customer  growth.  Volume  increased  for  the  year  ended
December 31, 2017 compared to the same period in 2016 , primarily due to the impact of customer growth.

Electric Retail Deliveries to Delaware Customers (in
GWhs)

2018

2017

% Change
2018 vs. 2017

Weather - Normal
% Change

2016

% Change
2017 vs. 2016

Weather - Normal
% Change

Retail Deliveries

Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

3,204  

1,344  

3,636  

33  

2,967  

1,317  

3,473  

32  

8.0%  

2.1%  

4.7%  

3.1%  

1.8%  

—%  

3.7%  

3.4%  

3,072  

1,341  

3,476  

35  

(3.4)%  

(1.8)%  

(0.1)%  

(8.6)%  

0.9 %

(0.2)%

0.9 %

(7.1)%

Total electric retail deliveries (a)
__________
(a) Reflects  delivery  volumes  and  revenues  from  customers  purchasing  electricity  directly  from  DPL  and  customers  purchasing  electricity  from  a  competitive  electric

0.7 %

(1.7)%  

2.3%  

5.5%  

7,789  

7,924  

8,217  

generation supplier as all customers are assessed distribution charges.

Number of Total Electric Customers (Maryland and Delaware)

2018

2017

2016

As of December 31,

Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

Total

463,670  

61,381  

1,406  

621  

459,389  

60,697  

1,400  

629  

527,078  

522,115  

456,181

60,173

1,411

643

518,408

Natural Gas Retail Deliveries to Delaware Customers (in
mmcf)

2018

2017

% Change
2018 vs. 2017

Weather Normal
% change

2016

% Change
2017 vs. 2016

Weather Normal
% change

Retail Deliveries

Residential

Small commercial & industrial

Large commercial & industrial

Transportation

8,633  

4,134  

1,952  

6,831  

7,445  

3,754  

1,908  

6,538  

16.0%  

10.1%  

2.3%  

4.5%  

3.4 %  

(1.6)%  

2.3 %  

2.3 %  

7,765  

3,700  

1,875  

6,202  

(4.1)%  

1.5 %  

1.8 %  

5.4 %  

1.1%

6.5%

1.7%

6.3%

Total natural gas deliveries (a)
_________
(a) Reflects delivery volumes and revenues from customers purchasing natural gas directly from DPL and customers purchasing natural gas from a competitive natural gas

3.8%

0.5 %  

2.0 %  

9.7%  

19,542  

19,645  

21,550  

supplier as all customers are assessed distribution charges.

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Number of Delaware Gas Customers

Residential

Small commercial & industrial

Large commercial & industrial

Transportation

Total

As of December 31,

2018

2017

2016

124,183  

9,986  

18  

156  

122,347  

9,833  

20  

154  

120,951

9,784

17

156

134,343  

132,354  

130,908

Distribution Revenue decreased for the year ended December 31, 2018 compared  to  the  same  period  in  2017 primarily due to reduced electric distribution
rates and gas distribution rates in Delaware that were put into effect in March 2018 which reflect the impact of the lower federal income tax rate. Distribution
revenue increased for the year ended December 31, 2017 compared to the same period in 2016 , primarily due to higher electric distribution and natural gas
distribution  base  rates  in  Delaware  that  became  effective  in  July  and  December  2016  and  higher  electric  distribution  base  rates  in  Maryland  that  became
effective in February 2017. See Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements for additional information.

Regulatory  Required  Programs  represent  revenues  collected  under  approved  riders  to  recover  costs  incurred  for  regulatory  programs  such  as  energy
efficiency  programs,  DE  Renewable  Portfolio  Standards,  SOS  administrative  costs  and  GCR  costs.  The  riders  are  designed  to  provide  full  and  current  cost
recovery  as  well  as  a  return  in  certain  instances.  The  costs  of  these  programs  are  included  in  Operating  and  maintenance  expense,  Depreciation  and
amortization expense and Taxes other than income.

Transmission Revenues. Under  a  FERC  approved  formula,  transmission  revenue  varies  from  year  to  year  based  upon  fluctuations  in  the  underlying  costs,
capital  investments  being  recovered,  the  highest  daily  peak  load,  which  is  updated  annually  in  January  based  on  the  prior  calendar  years.  Generally,
increases/decreases  in  the  highest  daily  peak  load  will  result  in  higher/lower  transmission  revenue.  Transmission  revenue  increased  for  the  year  ended
December 31, 2018 compared to the same period in 2017 and for the year ended 2017 compared to the same period in 2016 due to higher rates effective June
2018 and June 2017.

Other revenue includes rental revenue, revenue related to late payment charges, mutual assistance revenues, and recoveries of other taxes.

See Note 24 - Segment Information for the Combined Notes to Consolidated Financial Statements for the presentation of DPL's revenue disaggregation.

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The changes in Operating and maintenance expense consisted of the following:

Baseline

  Merger costs (a)

Energy efficiency merger commitments customer credits (b)

  BSC and PHISCO costs (c)

Labor, other benefits, contracting and materials

  Write-off of construction work in progress (d)

Uncollectible accounts expense

Other

Regulatory required programs

Total increase (decrease)

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

7   $

5  

4  

4  

3  

1  

6  

30

(1)

29   $

(94)

—

(15)

8

(3)

(10)

(5)

(119)

(7)

(126)

_________
(a) Decrease in 2017 primarily due to merger-related commitments for customer rate credits and charitable contributions recognized in 2016. Increase in 2018 primarily due to

a deferral of accumulated merger integration costs as regulatory assets in 2017.

(b) Related to EmPower Maryland energy efficiency customer credits.
(c) Decrease in 2017 primarily related to merger severance and compensation costs recognized in 2016.
(d) Decrease in 2017 primarily related to a review of capital projects in 2016.

The changes in Depreciation and amortization expense consisted of the following:

Depreciation expense (a)

Regulatory asset amortization (b)

Regulatory required programs (c)

Total increase

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

6   $

18  

(9)

15   $

14

—

(4)

10

_________
(a) Depreciation expense increased due to ongoing capital expenditures and higher depreciation rates in Maryland effective February 2017.
(b) Regulatory asset amortization increased due to additional regulatory assets related to rate case activity.
(c) Regulatory required programs decreased primarily due to an EmPower Maryland surcharge rate decrease effective January 2018 and 2017.

Gain on sales of assets for the year ended December 31, 2017 compared to the same period in 2016 decreased primarily due to the sale of land in July and
December 2016.

Interest expense, net for the year ended December 31, 2018 compared to the same period in 2017 increased primarily due to higher outstanding debt.

Other, net for the year ended December 31, 2018 compared to the same period in 2017 decreased primarily due to lower income from AFUDC equity.

Effective  income  tax  rates  for  the  years  ended  December  31,  2018  , 2017 and 2016 were 15.5% , 37.0% and 169.2% ,  respectively.  The  decrease  in the
effective income tax rate for the year ended December 31, 2018 compared to the same period in 2017 is primarily due to the lower federal income tax rate as a
result  of  the  TCJA.  See  Note  14  —  Income  Taxes  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  the
components of the change in effective income tax rates

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Results of Operations—ACE

Operating revenues

Purchased power expense

Revenues net of purchased power expense

Other operating expenses

Operating and maintenance

Depreciation and amortization

Taxes other than income

Total other operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and
(deductions)

Income (loss) before income taxes

Income taxes

Net income (loss)

2018

2017

Favorable (unfavorable)
2018 vs. 2017 variance

2016

Favorable (unfavorable)
2017 vs. 2016 variance

$

1,236   $

1,186   $

50

  $

1,257   $

616  

620  

330  

136  

5  

471  

—  

149  

(64)  

2  

(62)  

87  

12  

570  

616  

307  

146  

6  

459  

—  

157  

(61)  

7  

(54)  

103  

26  

(46)

4

(23)

10

1

(12)

—  

(8)

(3)

(5)

(8)

(16)

14

651  

606  

428  

165  

7  

600  

1  

7  

(62)  

9  

(53)  

(46)  

(4)  

$

75   $

77   $

(2)

  $

(42)   $

(71)

81

10

121

19

1

141

(1)

150

1

(2)

(1)

149

(30)

119

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 . Net income remained relatively consistent. The TCJA did not significantly
impact Net income as the favorable income tax impacts were predominately offset by lower revenues resulting from the pass back of the tax savings through
customer rates.

Year Ended December 31, 2017 Compared to Year Ended December 31, 2016 . Net Income increased by $119 million primarily due to merger-related costs
recognized  in  March  2016  and  higher  electric  distribution  base  rates  effective  August  2016  and  October  2017  and  an  increase  in  transmission  formula  rate
revenues, partially offset by lower customer usage. Income taxes expense included unrecognized tax benefits of $22 million for uncertain tax positions related to
the deductibility of certain merger commitments in the first quarter of 2017. This decrease was offset by an increase in income taxes due to the December 2017
impairment of certain transmission-related income tax regulatory assets of $7 million.

Revenues  Net  of  Purchased  Power  Expense.  There  are  certain  drivers  of  Operating  revenues  that  are  fully  offset  by  their  impact  on  Purchased  power
expense, such as commodity and REC procurement costs and participation in customer choice programs. ACE recovers electricity and REC procurement costs
from customers without mark-up. Therefore, fluctuations in these costs have no impact on RNF.

Customers  have  the  choice  to  purchase  electricity  from  competitive  electric  generation  suppliers.  Customer  choice  programs  of  supplier  do  not  impact  the
volume of deliveries or RNF, but impact revenues related to supplied electricity.

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The changes in RNF , consisted of the following:

Weather

Volume

Distribution revenue

Regulatory required programs

Transmission revenues

Other

Total increase

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

12   $

14  

2  

(23)

(4)

3  

4   $

(3)

(20)

40

(24)

22

(5)

10

Weather. The demand for electricity is affected by weather conditions. With respect to the electric business, very warm weather in summer months and very
cold  weather  in winter  months  are  referred  to  as  “favorable  weather  conditions”  because  these  weather  conditions  result  in  increased  deliveries  of  electricity.
Conversely,  mild  weather  reduces  demand.  During  the  year  ended  December 31, 2018 compared  to  the  same  period  in  2017 ,  RNF  related  to  weather  was
higher due to the impact of favorable weather conditions in ACE's service territory. During the year ended December 31, 2017 compared to the same period in
2016 , RNF related to weather was lower due to the impact of unfavorable winter weather conditions.

Heating  and  cooling  degree  days  are  quantitative  indices  that  reflect  the  demand  for  energy  needed  to  heat  or  cool  a  home  or  business.  Normal  weather  is
determined  based on historical average heating  and cooling degree  days for a 20-year period in ACE’s service territory. The changes in heating  and cooling
degree  days  in  ACE’s  service  territory  for  the  years  ended  December  31,  2018  and  December  31,  2017  compared  to  same  periods  in  2017  and  2016  ,
respectively, and normal weather consisted of the following:

Heating and Cooling Degree-Days

2018

2017

Normal

2018 vs. 2017

2018 vs. Normal

Heating Degree-Days

Cooling Degree-Days

4,523  

1,535  

4,206  

1,228  

4,666  

1,135  

7.5 %  

25.0 %  

(3.1)%

35.2 %

For the Years Ended December 31,

% Change

Heating and Cooling Degree-Days

2017

2016

Normal

2017 vs. 2016

2017 vs. Normal

Heating Degree-Days

Cooling Degree-Days

4,206  

1,228  

4,487  

1,303  

4,713  

1,115  

(6.3)%  

(5.8)%  

(10.8)%

10.1 %

For the Years Ended December 31,

% Change

Volume, exclusive of the effects of weather, increased for the year ended December 31, 2018 compared to the same period in 2017 , primarily due to higher
average  residential  and  commercial  usage.  Volume,  exclusive  of  the  effects  of  weather,  decreased  for  the  year  ended  December  31,  2017  compared to the
same period in 2016 , primarily due to lower average customer usage, partially offset by the impact of customer growth.

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Electric Retail Deliveries to Customers
(in GWhs)

2018

2017

% Change 2018 vs.
2017

Weather - Normal %
Change

2016

% Change 2017 vs.
2016

Weather - Normal %
Change

Retail Deliveries (a)

Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric
railroads

Total retail deliveries

Number of Electric Customers

Residential

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

4,185  

1,361  

3,565  

49  

9,160  

3,853  

1,286  

3,399  

47  

8,585  

8.6%  

5.8%  

4.9%  

4.3%  

6.7%  

4.0%  

3.5%  

3.7%  

4.5%  

3.8%  

4,153  

1,455  

3,402  

49  

9,059  

(7.2)%  

(11.6)%  

(0.1)%  

(4.1)%  

(5.2)%  

(6.2)%

(11.1)%

0.4 %

(4.1)%

(4.5)%

As of December 31,

2018

2017

2016

490,975  

61,386  

3,515  

656  

487,168  

61,013  

3,684  

636  

484,240

61,008

3,763

610

Total
__________
(a) Reflects  delivery  volumes  and  revenues  from  customers  purchasing  electricity  directly  from  ACE  and  customers  purchasing  electricity  from  a  competitive  electric

549,621

556,532  

552,501  

generation supplier as all customers are assessed distribution charges.

Distribution Revenue increased for the year ended December 31, 2018 compared to the same period in 2017 primarily due to higher electric distribution base
rates that became effective in November 2017, partially offset by the impact of reduced distribution rates to reflect the lower federal income tax rate . Distribution
revenue increased for the year ended  December 31, 2017 compared to the same period in 2016 , primarily due to higher electric distribution base rates that
became  effective  in  August  2016  and  October  2017.  See  Note  4  —  Regulatory  Matters  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for
additional information.

Regulatory  Required  Programs  represent  revenues  collected  under  approved  riders  to  recover  costs  incurred  for  regulatory  programs  such  as  energy
efficiency programs, Societal Benefits Charge, Transition Bonds and BGS administrative costs . The riders are designed to provide full and current cost recovery
as  well  as  a  return  in  certain  instances.  The  costs  of  these  programs  are  included  in  Operating  and  maintenance  expense,  Depreciation  and  amortization
expense and Taxes other than income. Revenues from regulatory programs decreased for the year ended December 31, 2018 compared to the same period in
2017 , and  for the  year  ended  2017 compared  to  the  same  period  in  2016 due  to  rate  decreases  effective  October  2017  and  2016  respectively  for  the  ACE
Transition Bonds.

Transmission Revenues. Under  a  FERC-approved  formula,  transmission  revenue  varies  from  year  to  year  based  upon  fluctuations  in  the  underlying  costs,
capital  investments  being  recovered,  the  highest  daily  peak  load,  which  is  updated  annually  in  January  based  on  the  prior  calendar  year.  Generally,
increases/decreases  in  the  highest  daily  peak  load  will  result  in  higher/lower  transmission  revenue.  Transmission  revenue  decreased  for  the  year  ended
December 31, 2018 compared to the same period in 2017 primarily due to the impact of the lower federal income tax rate. Transmission revenue increased for
the  year  ended  December  31,  2017  compared  to  the  same  period  in  2016 due  to  higher  rates  effective  June  2017  and  June  2016  related  to  increases  in
transmission plant investment and operating expenses.

Other revenue includes rental revenue, revenue related to late payment charges, mutual assistance revenues and recoveries of other taxes.

See Note 24 - Segment Information of the Combined Notes to Consolidated Financial Statements for the presentation of ACE's revenue disaggregation.

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The changes in Operating and maintenance expense consisted of the following:

Baseline

Labor, other benefits, contracting and materials

BSC and PHISCO costs (a)

Merger costs (b)

Uncollectible accounts expense (c)

Other

Regulatory required programs

Total increase (decrease)

_________

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

17   $

10  

7  

(8)

(2)

24  

(1)

23   $

9

(11)

(120)

—

1

(121)

—

(121)

(a) Decrease in 2017 primarily related to merger severance and compensation costs recognized in 2016.
(b) Decrease in 2017 primarily related to merger-related commitments for customer rate credits and charitable contributions recognized in 2016. Increase in 2018 primarily

related to a deferral of accumulated merger integration costs as regulatory assets in 2017.

(c) ACE  is  allowed  to  recover  from  or  refund  to  customers  the  difference  between  its  annual  uncollectible  accounts  expense  and  the  amounts  collected  in  rates  annually

through a rider mechanism. An equal and offsetting amount has been recognized in Operating revenues for the periods presented.

The changes in Depreciation and amortization expense consisted of the following:

Depreciation expense (a)

Regulatory asset amortization (b)

Required regulatory programs (c)

Other

Total decrease

Increase (Decrease) 
2018 vs. 2017

Increase (Decrease) 
2017 vs. 2016

$

$

5   $

5  

(20)

—  

(10)

  $

6

(2)

(24)

1

(19)

_________
(a) Depreciation expense increased due to ongoing capital expenditures.
(b) Regulatory asset amortization increased due to additional regulatory assets related to rate case activity.
(c) Regulatory required programs decreased due to rate decreases effective October 2017 and 2016 respectively for the ACE Transition Bonds.

Other, net for the year ended December 31, 2018 compared to the same period in 2017 decreased primarily due to lower income from AFUDC equity.

Effective income tax rates were 13.8% , 25.2% , and 8.7% for the years ended December 31, 2018 , 2017 and 2016 , respectively. The decrease for the year
ended December 31, 2018 compared to the same period in 2017 primarily due to the lower federal  income tax rate as a result of the TCJA. See Note 14 —
Income  Taxes  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  the  components  of  the  change  in  effective
income tax rates.

Liquidity and Capital Resources

Exelon activity presented below includes the activity of PHI, Pepco, DPL and ACE, from the PHI Merger effective date of March 24, 2016 through December 31,
2018 . Exelon prior year activity is unadjusted for the effects of the

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PHI  Merger.  Due  to  the  application  of  push-down  accounting  to  the  PHI  entity,  PHI's  activity  is  presented  in  two  separate  reporting  periods,  the  legacy  PHI
activity through March 23, 2016 (Predecessor), and PHI activity for the remainder of the period after the PHI merger date (Successor). For each of Pepco, DPL
and ACE the activity presented below include its activity for the years ended December 31, 2018 , 2017 and 2016 . All results included throughout the liquidity
and capital resources section are presented on a GAAP basis.

The Registrants’ operating and capital expenditures requirements are provided by internally generated cash flows from operations as well as funds from external
sources in the capital markets and through bank borrowings. The Registrants’ businesses are capital intensive and require considerable capital resources. Each
Registrant’s access to external financing on reasonable terms depends on its credit ratings and current overall capital market business conditions, including that
of  the  utility  industry  in  general.  If  these  conditions  deteriorate  to  the  extent  that  the  Registrants  no  longer  have  access  to  the  capital  markets  at  reasonable
terms, the Registrants have access to unsecured revolving credit facilities with aggregate bank commitments of $9 billion . In addition, Generation has $ 545
million in bilateral facilities with banks which have various expirations between October 2019 and April 2021 and $159 in credit facilities for project finance. The
Registrants utilize their credit facilities to support their commercial paper programs, provide for other short-term borrowings and to issue letters of credit. See the
“Credit  Matters”  section  below  for  additional  information.  The  Registrants  expect  cash  flows  to  be  sufficient  to  meet  operating  expenses,  financing  costs  and
capital expenditure requirements.

The Registrants primarily use their capital resources, including cash, to fund capital requirements, including construction expenditures, retire debt, pay dividends,
fund pension and other postretirement benefit obligations and invest in new and existing ventures. The Registrants spend a significant amount of cash on capital
improvements and construction projects that have a long-term return on investment. Additionally, ComEd, PECO, BGE, Pepco, DPL and ACE operate in rate-
regulated  environments  in  which  the  amount  of  new  investment  recovery  may  be  delayed  or  limited  and  where  such  recovery  takes  place  over  an  extended
period  of  time.  See  Note  13 — Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  of  the
Registrants’ debt and credit agreements.

NRC Minimum Funding Requirements

NRC  regulations  require  that  licensees  of  nuclear  generating  facilities  demonstrate  reasonable  assurance  that  sufficient  funds  will  be  available  in  certain
minimum  amounts  to  decommission  the  facility.  These  NRC  minimum  funding  levels  are  based  upon  the  assumption  that  decommissioning  activities  will
commence after the end of the current licensed life of each unit. If a unit fails the NRC minimum funding test, then the plant’s owners or parent companies would
be required to take steps, such as providing financial guarantees through letters of credit or parent company guarantees or making additional cash contributions
to  the  NDT  fund  to  ensure  sufficient  funds  are  available.  See  Note  15  -  Asset  Retirement  Obligations  of  the  Combined  Notes  to  Consolidated  Financial
Statements for additional information on the NRC minimum funding requirements.

If  a  nuclear  plant  were  to  early  retire  there  is  a  risk  that  it  will  no  longer  meet  the  NRC  minimum  funding  requirements  due  to  the  earlier  commencement  of
decommissioning activities and a shorter time period over which the NDT funds could appreciate in value. A shortfall could require that Generation address the
shortfall by, among other things, obtaining a parental guarantee for Generation’s share of the funding assurance. However, the amount of any guarantees or
other  assurance  will  ultimately  depend  on  the  decommissioning  approach,  the  associated  level  of  costs,  and  the  NDT  fund  investment  performance  going
forward.  Within  two  years  after  shutting  down  a  plant,  Generation  must  submit  a  post-shutdown  decommissioning  activities  report  (PSDAR)  to  the  NRC  that
includes  the  planned  option  for  decommissioning  the  site.  As  discussed  in  Note  15 - Asset  Retirement  Obligations  of  the  Combined  Notes  to  Consolidated
Financial Statements, Generation filed its annual decommissioning funding status report with the NRC on March 28, 2018 for shutdown reactors and reactors
within five years of shutdown. As of December 31, 2018 , across the alternative decommissioning approaches available, Exelon would not be required to post a
parental guarantee for TMI or Oyster Creek. In the event PSEG decides to early retire Salem, Generation estimates a parental guarantee of up to $30 million
from Exelon could be required for Salem, dependent upon the ultimate decommissioning approach selected.

Upon issuance of any required financial guarantees, each site would be able to utilize the respective NDT funds for radiological decommissioning costs, which
represent the majority of the total expected decommissioning costs. However, the NRC must approve an additional exemption in order for the plant’s owner(s) to
utilize the NDT fund to pay for non-radiological decommissioning costs (i.e., spent fuel management and site restoration costs). If a unit does not receive this
exemption, the costs would be borne by the owner(s). While the ultimate amounts may vary

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greatly  and  could  be  reduced  by  alternate  decommissioning  scenarios  and/or  reimbursement  of  certain  costs  under  the  DOE  reimbursement  agreements  or
future litigation, across the alternative decommissioning approaches available, if TMI were to fail to obtain the exemption, Generation estimates it could incur
spent  fuel  management  and  site  restoration  costs  over  the  next  ten  years  of  up  to  $125 million net  of  taxes,  dependent  upon  the  ultimate  decommissioning
approach selected. In the event PSEG decides to early retire Salem and Salem were to fail to obtain the exemption, Generation estimates it could incur spent
fuel  management  and  site  restoration  costs  over  the  next  ten  years  of  up  to  $90  million  net  of  taxes.  On  October  19,  2018,  the  NRC  granted  Generation's
exemption request to use the Oyster Creek NDT funds for non-radiological decommissioning costs.

On  July  31,  2018,  Generation  entered  into  an  agreement  for  the  sale  of  Oyster  Creek  which  is  expected  to  occur  in  the  second  half  of  2019.  See  Note  5 -
Mergers, Acquisitions and Dispositions for additional information on the sale of Oyster Creek to Holtec.

Junior Subordinated Notes

In June 2014, Exelon issued $1.15 billion of junior subordinated notes in the form of 23 million equity units at a stated amount of $50.00 per unit. Each equity unit
represented an undivided beneficial ownership interest in Exelon’s $1.15 billion of 2.50% junior subordinated notes due in 2024 (“2024 notes”) and a forward
equity purchase contract.  As contemplated in the June 2014 equity unit structure, in April 2017, Exelon completed the remarketing of the 2024 notes into $1.15
billion of 3.497% junior subordinated notes due in 2022 (“Remarketing”).  Exelon conducted the Remarketing on behalf of the holders of equity units and did not
directly  receive  any  proceeds  therefrom.  Instead,  the  former  holders  of  the  2024  notes  used  debt  remarketing  proceeds  towards  settling  the  forward  equity
purchase contract with Exelon on June 1, 2017. Exelon issued approximately 33 million shares of common stock from treasury stock and received $1.15 billion
upon settlement of the forward equity purchase contract. When reissuing treasury stock Exelon uses the average price paid to repurchase shares to calculate a
gain  or  loss  on  issuance  and  records  gains  or  losses  directly  to  retained  earnings.  A  loss  on  reissuance  of  treasury  shares  of  $1.05  billion  was  recorded  to
retained earnings as of December 31, 2017 . See Note 20 — Earnings Per Share of the Combined Notes to Consolidated Financial Statements for additional
information on the issuance of common stock.

Cash Flows from Operating Activities

General

Generation’s  cash  flows  from  operating  activities  primarily  result  from  the  sale  of  electric  energy  and  energy-related  products  and  services  to  customers.
Generation’s future cash flows from operating activities may be affected by future demand for and market prices of energy and its ability to continue to produce
and supply power at competitive costs as well as to obtain collections from customers.

The Utility Registrants' cash flows from operating activities primarily result from the transmission and distribution of electricity and, in the case of PECO, BGE
and DPL, gas distribution services. The Utility Registrants' distribution services are provided to an established and diverse base of retail customers. The Utility
Registrants'  future  cash flows may be affected  by the  economy,  weather  conditions,  future legislative initiatives, future  regulatory  proceedings  with respect  to
their rates or operations, competitive suppliers, and their ability to achieve operating cost reductions.

See Note 4 — Regulatory Matters and Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional
information of regulatory and legal proceedings and proposed legislation.

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The following table provides a summary of the major items affecting Exelon’s cash flows from operations for the years ended December 31, 2018 , 2017 and
2016 :

Net income

Add (subtract):

Non-cash operating activities (a)
Pension and non-pension 
postretirement benefit 
contributions

Income taxes

Changes in working capital and other
noncurrent assets and liabilities (b)

Option premiums received (paid), net

Collateral received 
(posted), net

Deposit with IRS

2018

2017

  2018 vs. 2017 Variance  

2016

2017 vs. 2016 Variance

$

2,084   $

3,876   $

(1,792)   $

1,196  

$

2,680

7,580  

5,445  

2,135  

7,714  

(2,269)

(383)  

340  

(1,016)  

(43)  

82  

—  

(405)  

299  

(1,605)  

28  

(158)  

—  

22  

41  

589  

(71)  

240  

—  

(397)  

576  

(243)  

(66) —

931  

(1,250)  

(8)

(277)

(1,362)

94

(1,089)

1,250

(981)

Net cash flows provided by operations

$

8,644   $

7,480   $

1,164   $

8,461  

$

__________
(a) Represents depreciation, amortization, depletion and accretion, net fair value changes related to derivatives, deferred income taxes, provision for uncollectible accounts,
pension  and  non-pension  postretirement  benefit  expense,  equity  in  earnings  and  losses  of  unconsolidated  affiliates  and  investments,  decommissioning-related  items,
stock  compensation  expense,  impairment  of  long-lived  assets,  gain  on  sale  of  assets  and  businesses  and  other  non-cash  charges.  See  Note  23  —  Supplemental
Financial Information of the Combined Notes to Consolidated Financial Statements for additional information on non-cash operating activity.

(b) Changes in working capital and other noncurrent assets and liabilities exclude the changes in commercial paper, income taxes and the current portion of long-term debt.

Pension and Other Postretirement Benefits

Management  considers  various  factors  when  making  pension  funding  decisions,  including  actuarially  determined  minimum  contribution  requirements  under
ERISA,  contributions  required  to  avoid  benefit  restrictions  and  at-risk  status  as  defined  by  the  Pension  Protection  Act  of  2006  (the  Act),  management  of  the
pension obligation and regulatory implications. The Act requires the attainment of certain funding levels to avoid benefit restrictions (such as an inability to pay
lump  sums  or  to  accrue  benefits  prospectively),  and  at-risk  status  (which  triggers  higher  minimum  contribution  requirements  and  participant  notification).  The
projected contributions below reflect a funding strategy of contributing the greater of (1) $300 million until all the qualified plans are fully funded on an ABO basis,
and (2) the minimum amounts under ERISA to meet minimum contribution requirements and/or avoid benefit restrictions and at-risk status. This level funding
strategy helps minimize volatility of future period required pension contributions. Unlike the qualified pension plans, Exelon’s non-qualified pension plans are not
funded, given that they are not subject to statutory minimum contribution requirements.

While other postretirement plans are also not subject to statutory minimum contribution requirements, Exelon does fund certain of its plans. For Exelon's funded
OPEB plans, contributions generally equal accounting costs, however, Exelon’s management has historically considered several factors in determining the level
of  contributions  to  its  other  postretirement  benefit  plans,  including  liabilities  management,  levels  of  benefit  claims  paid  and  regulatory  implications  (amounts
deemed prudent to meet regulatory expectations and best assure continued rate recovery). The amounts below include benefit payments related to unfunded
plans.

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The following table provides all registrants' planned contributions to the qualified pension plans, planned benefit payments to non-qualified pension plans, and
planned contributions to other postretirement plans in 2019:

Exelon

Generation

ComEd

PECO

BGE

BSC

PHI

Pepco

DPL

ACE

PHISCO

Qualified Pension Plans

  Non-Qualified Pension Plans

Other 
Postretirement 
Benefits

$

301   $

135  

65  

25  

34  

41  

1  

—  

—  

—  

1  

25   $

7  

1  

1  

1  

7  

8  

2  

1  

—  

5  

44

13

2

—

15

2

12

10

—

1

1

To  the  extent  interest  rates  decline  significantly  or  the  pension  and  OPEB  plans  earn  less  than  the  expected  asset  returns,  annual  pension  contribution
requirements in future years could increase. Conversely, to the extent interest rates increase significantly or the pension and OPEB plans earn greater than the
expected asset returns, annual pension and OPEB contribution requirements in future years could decrease. Additionally, expected contributions could change if
Exelon changes its pension or OPEB funding strategy.

Cash flows provided by operating activities for the year ended December 31, 2018 , 2017 and 2016 by Registrant were as follows:

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

$

2018

2017

2016

8,644   $

3,861  

1,749  

739  

789  

474  

352  

228  

7,480   $

3,299  

1,527  

755  

821  

407  

321  

206  

8,461

4,442

2,505

829

945

651

310

385

2018

Successor

2017

March 24, 2016 to December
31, 2016

January 1, 2016 to March 23,
2016

Predecessor

$

1,132 $

950   $

888     $

264

Changes in Registrants' cash flows from operations for 2018, 2017, and 2016 were generally consistent with changes in each Registrant’s respective results of
operations, as adjusted by changes in working capital in the normal course of business. In addition, significant operating cash flow impacts for the Registrants for
2018 , 2017 and 2016 were as follows:

Generation

•

Depending upon whether Generation is in a net mark-to-market liability or asset position, collateral may be required to be posted with or collected
from  its  counterparties.  In  addition,  the  collateral  posting  and  collection  requirements  differ  depending  on  whether  the  transactions  are  on  an
exchange or in the OTC

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markets. During 2018 , 2017 and 2016 , Generation had net collections (payments) of counterparty cash collateral of $64 million , $(129) million and
$923 million , respectively, primarily due to market conditions that resulted in changes to Generation’s net mark-to-market position.

•

During 2018 , 2017 and 2016 , Generation had net (payments) collections of approximately $(43) million , $28 million and $(66) million , respectively,
related to purchases and sales of options. The level of option activity in a given year may vary due to several factors, including changes in market
conditions as well as changes in hedging strategy.

For  additional  information  regarding  changes  in  non-cash  operating  activities,  see  Note  23 — Supplemental  Financial  Information  of  the  Combined  Notes  to
Consolidated Financial Statements.

Cash Flows from Investing Activities

Cash flows used in investing activities for the year ended December 31, 2018 , 2017 and 2016 by Registrant were as follows:

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

2018

2017

2016

$

(7,834)   $

(7,971)   $

(2,531)  

(2,097)  

(840)  

(950)  

(654)  

(362)  

(334)  

(2,662)  

(2,230)  

(597)  

(875)  

(628)  

(429)  

(313)  

(15,450)

(3,816)

(2,685)

(797)

(910)

(616)

(336)

(307)

2018

Successor

2017

March 24, 2016 to December
31, 2016

January 1, 2016 to March 23,
2016

Predecessor

$

(1,371) $

(1,397)   $

(993)       $

(346)

Significant investing cash flow impacts for the Registrants for 2018 , 2017 and 2016 were as follows:

Exelon

•

•

During 2016, Exelon had expenditures of $6.6 billion related to the PHI merger.

During 2016, Exelon had proceeds of $360 million as a result of early termination of direct financing leases.

Exelon and Generation

•

•

•

•

During  2018,  Exelon  and  Generation  had  expenditures  of  $81  million  and  $57  related  to  the  acquisitions  of  the  Everett  Marine  Terminal  and  the
Handley generating station, respectively.

During 2018, Exelon and Generation had proceeds of $85 million relating to the sale of Generation’s interest in an electrical contracting business that
primarily installs, maintains and repairs underground and high-voltage cable transmission and distribution services.

During 2017, Exelon and Generation had additional expenditures of $23 million and $178 million related to the acquisitions of ConEdison Solutions
and the FitzPatrick nuclear generating station, respectively.

During  2017,  Exelon  and  Generation  had  proceeds  of  $218  million  from  sales  of  long-lived  assets,  primarily  related  to  the  sale  back  of  turbine
equipment.

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•

During  2016,  Exelon  and  Generation  had  expenditures  of  $235  million  and  $58  million  related  to  the  acquisitions  of  ConEdison  Solutions  and  the
FitzPatrick nuclear generating station, respectively.

Capital Expenditure Spending

Capital expenditures by Registrant for 2018 , 2017 and 2016 and projected amounts for 2019 are as follows:

Exelon (b)

Generation

ComEd

PECO

BGE  

Pepco

DPL

ACE

Projected
2019 (a)

$

7,325   $

1,950  

1,875  

975  

1,100  

725  

350  

300  

2018

2017

2016

7,594   $

2,242  

2,126  

849  

959  

656  

364  

335  

7,584   $

2,259  

2,250  

732  

882  

628  

428  

312  

Predecessor

8,553

3,078

2,734

686

934

586

349

311

Projected
2019 (a)

2018

Successor

2017

March 24, 2016 to December
31, 2016

January 1, 2016 to March 23,
2016

PHI (c)

$

1,375   $

1,375 $

1,396   $

1,008       $

273

__________
(a) Total projected capital expenditures do not include adjustments for non-cash activity. Amounts are rounded to the nearest $25 million.
(b)
(c)

Includes corporate operations, BSC and PHISCO.
Includes PHISCO.

Projected capital expenditures and other investments are subject to periodic review and revision to reflect changes in economic conditions and other factors.

Generation

Approximately 43% and 8% of the projected 2019 capital expenditures at Generation are for the acquisition of nuclear fuel, and the construction of new natural
gas  plants  and  solar  facilities,  respectively,  with  the  remaining  amounts  reflecting  investment  in  renewable  energy  and  additions  and  upgrades  to  existing
facilities (including material condition improvements during nuclear refueling outages). Generation anticipates that it will fund capital expenditures with internally
generated funds and borrowings.

ComEd, PECO, BGE, Pepco, DPL and ACE

Projected 2019 capital expenditures at the Utility Registrants are for continuing projects to maintain and improve operations, including enhancing reliability and
adding capacity to the transmission and distribution systems such as the Utility Registrants' construction commitments under PJM’s RTEP.

The  Utility  Registrants  as  transmission  owners  are  subject  to  NERC  compliance  requirements.  NERC  provides  guidance  to  transmission  owners  regarding
assessments  of  transmission  lines.  The  results  of  these  assessments  could  require  the  Utility  Registrants  to  incur  incremental  capital  or  operating  and
maintenance  expenditures  to  ensure  their  transmission  lines  meet  NERC  standards.  In  2010,  NERC  provided  guidance  to  transmission  owners  that
recommended the Utility Registrants perform assessments of their transmission lines. ComEd, PECO and BGE submitted their final bi-annual reports to NERC
in  January  2014.  ComEd  and  PECO  will  be  incurring  incremental  capital  expenditures  associated  with  this  guidance  following  the  completion  of  the
assessments. Specific projects and expenditures are identified as the assessments are completed. ComEd’s and PECO’s forecasted 2019 capital expenditures
above  reflect  capital  spending  for  remediation  to  be  completed  through  2019.  BGE,  DPL  and  ACE  are  complete  with  their  assessments  and  Pepco  has
substantially completed its assessment and thus do not expect significant capital expenditures related to this guidance in 2019 .

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The  Utility  Registrants  anticipate  that  they  will  fund  their  capital  expenditures  with  a  combination  of  internally  generated  funds  and  borrowings  and  additional
capital contributions from parent.

Cash Flows from Financing Activities

Cash flows (used in) provided by financing activities for the year ended December 31, 2018 , 2017 and 2016 by Registrant were as follows:

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

$

2018

2017

2016

(219)   $

(981)  

534  

(39)  

156  

193  

32  

105  

767   $

(531)  

789  

50  

22  

219  

64  

5  

1,191

(734)

169

(263)

(21)

—

67

22

2018

Successor

2017

March 24, 2016 to December
31, 2016

January 1, 2016 to March 23,
2016

Predecessor

$

330 $

306   $

(7)

      $

372

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Debt

See Note 13 — Debt and Credit Agreements of the Combined  Notes to Consolidated Financial Statements  for additional  information of the Registrants’  debt
issuances and retirements. Debt activity for 2018 , 2017 and 2016 by Registrant was as follows:

During 2018 , the following long-term debt was issued:

Company

Generation

Generation

Generation

Generation

Generation

ComEd

ComEd

PECO

PECO

PECO

BGE

Pepco

Pepco

DPL

ACE

Type

Interest Rate

Maturity

Amount

Use of Proceeds

Energy Efficiency Project
Financing (a)
Energy Efficiency Project
Financing (a)
Energy Efficiency Project
Financing (a)
Energy Efficiency Project
Financing (a)

Energy Efficiency Project
Financing (a)

First Mortgage Bonds,
Series 124

First Mortgage Bonds,
Series 125

First and Refunding
Mortgage Bonds
Loan Agreement

First and Refunding
Mortgage Bonds

3.72%

March 31, 2019

3.17%

January 31, 2019

2.61%

September 30, 2018

4.17%

January 31, 2019

4.26%

May 31, 2019

4.00%

March 1, 2048

3.70%

August 15, 2028

3.90%

March 1, 2048

2.00%

June 20, 2023

3.90%

March 1, 2048

Senior Notes

4.25%

September 15, 2048

First Mortgage Bonds

4.27%

June 15, 2048

First Mortgage Bonds

4.31%

November 1, 2048

First Mortgage Bonds

4.27%

June 15, 2048

First Mortgage Bonds

4.00%

October 15, 2028

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

4

1

5

1

3

800

550

325

50

325

300

100

100

200

350

Funding to install energy conservation measures
for the Smithsonian Zoo project.
Funding to install energy conservation measures in
Brooklyn, NY.
Funding to install energy conservation measures
for the Pensacola project.
Funding to install energy conservation measures
for the General Services Administration
Philadelphia project.
Funding to install energy conservation measures
for the National Institutes of Health Multi-Buildings
Phase II project.
Refinance one series of maturing first mortgage
bonds, to repay a portion of ComEd’s outstanding
commercial paper obligations and to fund general
corporate purposes
Repay a portion of ComEd’s outstanding
commercial paper obligations and for general
corporate purposes.
Refinance a portion of maturing mortgage bonds.

Funding to implement Electric Long-term
Infrastructure Improvement Plan
Satisfy short-term borrowings from the Exelon
intercompany money pool and for general
corporate purposes.
Repay commercial paper obligations and for
general corporate purposes.
Repay outstanding commercial paper and for
general corporate purposes.
Repay outstanding commercial paper and for
general corporate purposes.
Repay outstanding commercial paper and for
general corporate purposes.
Refinance ACE’s 7.75% First Mortgage Bonds due
November 15, 2018, reduce short-term borrowings
and for general corporate purposes.

__________
(a) For  Energy  Efficiency  Project  Financing,  the  maturity  dates  represent  the  expected  date  of  project  completion,  upon  which  the  respective  customer  assumes  the

outstanding debt.

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During 2017 , the following long term debt was issued:

Company

Type

Interest Rate

Maturity

Exelon Corporate

Junior Subordinated Notes

3.50%

June 1, 2022

Generation

Generation

Generation

Generation

Generation

Generation

Albany Green Energy
Project Financing (a)
Energy Efficiency Project
Financing (a)
Energy Efficiency Project
Financing (a)
Energy Efficiency Project
Financing (a)
Energy Efficiency Project
Financing (a)
Senior Notes

LIBOR + 1.25%

November 17, 2017

3.90%

February 1, 2018

3.72%

May 1, 2018

2.61%

September 30, 2018

3.53%

April 1, 2019

2.95%

January 15, 2020

Generation

Senior Notes

3.40%

March 15, 2020

Generation

Generation

ComEd

ComEd

PECO

BGE

Pepco

Pepco

ExGen Texas Power
Nonrecourse Debt (b)(c)
ExGen Renewables IV,
Nonrecourse Debt (b)
First Mortgage Bonds,
Series 122

First Mortgage Bonds,
Series 123

First and Refunding
Mortgage Bonds
Senior Notes

LIBOR + 4.75%

September 18, 2021

LIBOR + 3.00%

November 30, 2024

2.95%

August 15, 2027

3.75%

August 15, 2047

3.70%

September 15, 2047

3.75%

August 15, 2047

Energy Efficiency Project
Financing (a)
First Mortgage Bonds

3.30%

December 15, 2017

4.15%

March 15, 2043

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

$

Amount

1,150

14

19

5

13

8

250

500

6

Use of Proceeds

Refinance Exelon's Junior Subordinated Notes
issued in June 2014.
Albany Green Energy biomass generation
development.
Funding to install energy conservation measures
for the Naval Station Great Lakes project.
Funding to install energy conservation measures
for the Smithsonian Zoo project.
Funding to install energy conservation measures
for the Pensacola project.
Funding to install energy conservation measures
for the State Department project.
Repay outstanding commercial paper obligations
and for general corporate purposes.
Repay outstanding commercial paper obligations
and for general corporate purposes.
General corporate purposes.

850

General corporate purposes.

350

650

325

300

2

200

Refinance maturing mortgage bonds, repay a
portion of ComEd’s outstanding commercial paper
obligations and for general corporate purposes
Refinance maturing mortgage bonds, repay a
portion of ComEd’s outstanding commercial paper
obligations and for general corporate purposes.
General corporate purposes.

Redeem $250 million in principal amount of the
6.20% Deferrable Interest Subordinated
Debentures due October 15, 2043 issued by BGE's
affiliate BGE Capital Trust II, repay commercial
paper obligations and for general corporate
purposes.
Funding to install energy conservation measures
for the DOE Germantown project.
Funding to repay outstanding commercial paper
and for general corporate purposes.

__________
(a) For  Energy  Efficiency  Project  Financing,  the  maturity  dates  represent  the  expected  date  of  project  completion,  upon  which  the  respective  customer  assumes  the

outstanding debt.

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(b) See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information of nonrecourse debt.
(c) As  a  result  of  the  bankruptcy  filing  for  EGTP  on  November  7,  2017,  the  nonrecourse  debt  was  deconsolidated  from  Exelon's  and  Generation's  consolidated  financial

statements. See Note 5 — Mergers, Acquisitions and Dispositions of the Combined Notes to Consolidated Financial Statements for additional information.

During 2016 , the following long term-debt was issued:

Company

Type

Interest Rate

Maturity

Amount

Use of Proceeds

Exelon Corporate

Senior Unsecured Notes

2.45%

April 15, 2021

Exelon Corporate

Senior Unsecured Notes

3.40%

April 15, 2026

Exelon Corporate

Senior Unsecured Notes

4.45%

April 15, 2046

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

ComEd

ComEd

PECO

BGE

Renewable Power
Generation Nonrecourse
Debt (a) 
Albany Green Energy
Project Financing (b)
Energy Efficiency Project
Financing (b)
Energy Efficiency Project
Financing (b)
Energy Efficiency Project
Financing (b)

  SolGen Nonrecourse Debt (a)  

Energy Efficiency Project
Financing (b)
Energy Efficiency Project
Financing (b)
First Mortgage Bonds,
Series 120

First Mortgage Bonds,
Series 121

  First Mortgage Bonds

Notes

4.11%

March 31, 2035

LIBOR + 1.25%

November 17, 2017

3.17%

December 31, 2017

3.90%

January 31, 2018

3.52%

April 30, 2018

3.93%  
3.46%

September 30, 2036

October 1, 2018

2.61%

September 30, 2018

2.55%

June 15, 2026

3.65%

June 15, 2046

1.70%  
2.40%

September 15, 2021

August 15, 2026

146

$

$

$

$

$

$

$

$

  $
$

$

$

$

  $
$

300

750

750

150

98

16

19

14

Repay commercial paper issued by PHI and for
general corporate purposes.
Repay commercial paper issued by PHI and for
general corporate purposes.
Repay commercial paper issued by PHI and for
general corporate purposes.
Paydown long-term debt obligations at Sacramento
PV Energy and Constellation Solar Horizons and
for general corporate purposes.
Albany Green Energy biomass generation
development.
Funding to install energy conservation measures in
Brooklyn, NY.
Funding to install energy conservation measures
for the Naval Station Great Lakes project.
Funding to install energy conservation measures
for the Smithsonian Zoo project.

150   General corporate purposes.
36

4

500

700

Funding to install energy conservation measures or
the Marine Corps Logistics Base project.
Funding to install energy conservation measures
for the Pensacola project.
Refinance maturing mortgage bonds, repay a
portion of ComEd's outstanding commercial paper
obligations and for general corporate purposes.
Refinance maturing mortgage bonds, repay a
portion of ComEd's outstanding commercial paper
obligations and for general corporate purposes.

300   Refinance maturing mortgage bonds.
350

Redeem the $190M of outstanding preference
shares and for general corporate purposes.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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BGE

Pepco

DPL

Notes

3.50%

August 15, 2046

500

Energy Efficiency Project
Financing (b)
First Mortgage Bonds

3.30%

December 15, 2017

4

4.15%

May 15, 2045

175

Redeem the $190M of outstanding preference
shares and for general corporate purposes.
Funding to install energy conservation measures
for the DOE Germantown project.
Refinance maturing mortgage bonds, repay
commercial paper and for general corporate
purposes.

__________
(a) See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information of nonrecourse debt.
(b) For  Energy  Efficiency  Project  Financing,  the  maturity  dates  represent  the  expected  date  of  project  completion,  upon  which  the  respective  customer  assumes  the

outstanding debt.

During 2018 , the following long-term debt was retired and/or redeemed:

Type

Interest Rate

Maturity

Amount

Company

Exelon Corporate

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

ComEd

ComEd

PECO

DPL

Pepco

Pepco

ACE

  Long-Term Software License Agreement
  Naval Station Great Lakes Project Financing
  Smithsonian Zoo Project Financing
  Pensacola Project Financing
  Fort Detrick Project Financing
  Holyoke Nonrecourse Debt (a)
  SolGen Nonrecourse Debt (a)
  Antelope Valley DOE Nonrecourse Debt (a)
  Continental Wind Nonrecourse Debt (a)
  Renewable Power Generation Nonrecourse Debt (a)
  Kennett Square Capital Lease
  ExGen Renewables IV Nonrecourse Debt
  NUKEM
  First Mortgage Bonds
  Notes
  First Mortgage Bonds
  Medium Term Notes, Unsecured
  Notes
  Third Party Financing
  First Mortgage Bonds
  Transition Bonds

3.95%

3.90%

3.72%

2.61%

3.55%

5.25%

3.93%

May 1, 2024

June 30, 2018

March 31, 2019

September 30, 2018

June 30, 2019

December 31, 2031

September 30, 2036

2.29% - 3.56%

January 5, 2037

6.00%

4.11%

7.83%

3mL+300 bps

3.15% - 3.35%

5.80%

6.95%

5.35%

6.81%

3.30%

7.28-7.99%

7.75%

February 28, 2033

March 31, 2035

September 20, 2020

November 30, 2024

2018 - 2020

March 15, 2018

July 15, 2018

March 1, 2018

January 9, 2018

August 31, 2018

2021 - 2023

November 15, 2018

  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $

6

41

1

21

19

1

10

22

33

11

4

16

43

700

140

500

4

5

1

250

31

ACE
__________
(a) See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information of nonrecourse debt.

5.05% - 5.55%

2020 - 2023

147

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

During 2017 , the following long-term debt was retired and/or redeemed:

Company

Type

Interest Rate

Maturity

Amount

Exelon Corporate   Long-Term Software License Agreement
Exelon Corporate   Senior Notes

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

ComEd

BGE

BGE

PHI

DPL

DPL

Pepco

  Senior Notes - Exelon Wind
  CEU Upstream Nonrecourse Debt (a)
  SolGen Nonrecourse Debt (a)
  Antelope Valley DOE Nonrecourse Debt (a)
  Kennett Square Capital Lease
  Continental Wind Nonrecourse Debt (a)  
  PES - PGOV Notes Payable
  ExGen Texas Power Nonrecourse Debt (a)(b)
  Renewable Power Generation Nonrecourse Debt (a)
  NUKEM
  ExGen Renewables I, Nonrecourse Debt
  Senior Notes
  Albany Green Energy Project Financing
  First Mortgage Bonds
  Rate Stabilization Bonds
  Capital Trust Preferred Securities
  Senior Notes
  Medium Term Notes, Unsecured
  Variable Rate Demand Bonds
  Third Party Financing
  Transition Bonds

3.95%

1.55%

2.00%

May 1, 2024

June 9, 2017

July 31, 2017

LIBOR + 2.25%

January 14, 2019

3.93%

September 30, 2036

2.29% - 3.56%

January 5, 2037

7.83%

6.00%

September 20, 2020

February 28, 2033

6.70-7.60%

2017 - 2018

LIBOR + 4.75%

September 18, 2021

4.11%

3.25% - 3.35%

LIBOR + 4.25%

6.20%

March 31, 2035

June 30, 2018

February 6, 2021

October 1, 2017

LIBOR + 1.25%

November 17, 2017

6.15%

5.82%

6.20%

6.13%

7.56% - 7.58%

Variable

6.97% - 7.99%

September 15, 2017

April 1, 2017

October 15, 2043

June 1, 2017

February 1, 2017

October 1, 2017

2018 - 2022

  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $

24

550

1

6

2

22

2

31

1

665

14

23

233

700

212

425

41

258

81

14

26

1

ACE
__________
(a) See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information of nonrecourse debt.
(b) As  a  result  of  the  bankruptcy  filing  for  EGTP  on  November  7,  2017,  the  nonrecourse  debt  was  deconsolidated  from  Exelon's  and  Generation's  consolidated  financial

5.05% - 5.55%

2020 - 2023

35

statements. See Note 5 — Mergers, Acquisitions and Dispositions for additional information.

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During 2016 , the following long-term debt was retired and/or redeemed:

Company

Type

Interest Rate

Maturity

Amount

Exelon Corporate   Long Term Software License Agreement
Exelon Corporate   Senior Notes

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

Generation

ComEd

ComEd

PECO

BGE

BGE

BGE

BGE

PHI

DPL

ACE

ACE

  Antelope Valley DOE Nonrecourse Debt (a)
  Kennett Square Capital Lease
  Continental Wind Nonrecourse Debt (a)
  CEU Upstream Nonrecourse Debt (a)
  ExGen Texas Power Nonrecourse Debt (a)(b)
  Sacramento Solar Nonrecourse Debt
  Clean Horizons Nonrecourse Debt
  ExGen Renewables I, Nonrecourse Debt
  PES - PGOV Notes Payable
  NUKEM
  NUKEM
  Renewable Power Generation Nonrecourse Debt (a)
  SolGen Nonrecourse Debt (a)
  First Mortgage Bonds, Series 104
  First Mortgage Bonds, Series 111
  First and Refunding Mortgage Bonds
  Rate Stabilization Bonds
  Rate Stabilization Bonds
  Notes
  Rate Stabilization Bonds
  Senior Unsecured Notes
  First Mortgage Bonds
  Transition Bonds
  Transition Bonds
  First Mortgage Bonds

3.95%

4.95%

May 1, 2024

June 15, 2035

2.29% - 3.56%

January 5, 2037

7.83%

6.00%

LIBOR + 2.25%

5.00%

LIBOR + 2.25%

LIBOR + 2.25%

LIBOR + 4.25%

6.70% - 7.46%

3.35%

3.25%

4.11%

3.93%

5.95%

1.95%

1.20%

5.72%

5.82%

5.90%

5.82%

5.90%

5.22%

5.05%

5.55%

September 20, 2020

February 28, 2033

January 14, 2019

September 18, 2021

December 31, 2030

September 7, 2030

February 6, 2021

2017-2018

June 30, 2018

July 1, 2018

March 31, 2035

September 30, 2036

August 15, 2016

August 1, 2016

October 15, 2016

April 1, 2016

April 1, 2017

October 1, 2016

April 1, 2017

December 12, 2016

December 30, 2016

October 20, 2020

October 20, 2023

  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $
  $

8

1

22

4

29

46

7

33

32

24

1

12

10

9

2

415

250

300

1

38

300

40

190

100

12

34

ACE
__________
(a) See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information of nonrecourse debt.
(b) As  a  result  of  the  bankruptcy  filing  for  EGTP  on  November  7,  2017,  the  nonrecourse  debt  was  deconsolidated  from  Exelon's  and  Generation's  consolidated  financial

August 23, 2016

7.68%

2

statements. See Note 5 — Mergers, Acquisitions and Dispositions for additional information.

From time to time and as market conditions warrant, the Registrants may engage in long-term debt retirements via tender offers, open market repurchases or
other viable options to reduce debt on their respective balance sheets.

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Dividends

Cash dividend payments and distributions for the year ended December 31, 2018 , 2017 and 2016 by Registrant were as follows:

Exelon

Generation

ComEd

PECO

BGE (a)

Pepco

DPL

ACE

PHI
__________
(a)

2018

2017

2016

$

1,332   $

1,001  

459  

306  

209  

169  

96  

59  

1,236   $

1,166

659  

422  

288  

198  

133  

112  

68  

922

369

277

187

136

54

63

2018

Successor

2017

March 24, 2016 to December 31,
2016

January 1, 2016 to March 23, 2016

Predecessor

$

326   $

311 $

273     $

—

Includes dividends paid on BGE's preference stock during 2016.

Quarterly dividends declared by the Exelon Board of Directors during the year ended December 31, 2018 and for the first quarter of 2019 were as follows:

Period

Declaration Date

Shareholder of Record Date

Dividend Payable Date

First Quarter 2018

Second Quarter 2018

Third Quarter 2018

Fourth Quarter 2018

January 30, 2018  

February 15, 2018  

May 1, 2018  

July 24, 2018  

May 15, 2018  

August 15, 2018  

September 24, 2018  

November 15, 2018  

March 9, 2018   $

  Cash per Share (a)
0.3450

June 8, 2018   $

September 10, 2018   $

December 1, 2018   $

0.3450

0.3450

0.3450

First Quarter 2019
___________
(a) Exelon's Board of Directors approved an updated dividend policy providing an increase of 5% each year for the period covering 2018 through 2020, beginning with the

February 20, 2019  

February 5, 2019  

March 8, 2019   $

0.3625

March 2018 dividend.

Short-Term Borrowings

Short-term borrowings incurred (repaid) during 2018 , 2017 and 2016 by Registrant were as follows:

Exelon

Generation

ComEd

BGE

Pepco

DPL

ACE

2018

2017

2016

$

(338)   $

—  

—  

(42)  

14  

(216)  

(94)  

(261)   $

(620)  

—  

32  

3  

216  

108  

(353)

620

(294)

(165)

(41)

(105)

(5)

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PHI

$

(296) $

328 $

(515)     $

(121)

Successor

Predecessor

2018

2017

March 24, 2016 to December 31,
2016

January 1, 2016 to March 23, 2016

Retirement of Long-Term Debt to Financing Affiliates

On August 28, 2017, BGE redeemed all of the outstanding shares of BGE Capital Trust II 6.20% Preferred Securities.

Contributions from Parent/Member 

Contributions from Parent/Member (Exelon) during 2018 , 2017 and 2016 by Registrant were as follows:

Generation

ComEd (a)(b)
PECO (b)

BGE (b)

Pepco (c)

DPL (c)

ACE (c)

2018

2017

2016

$

155   $

102   $

500  

89  

109  

166  

150  

67  

672  

16  

184  

161  

—  

—  

142

473

18

61

187

152

139

2018

Successor

2017

March 24, 2016 to December 31,
2016

January 1, 2016 to March 23, 2016

Predecessor

PHI
__________
(a) Additional  contributions  from  parent  or  external  debt  financing  may  be  required  as  a  result  of  increased  capital  investment  in  infrastructure  improvements  and
modernization pursuant to EIMA, transmission upgrades and expansions and Exelon's agreement to indemnify ComEd for any unfavorable after-tax impacts associated
with ComEd's LKE tax matter.

758 $

1,251     $

385   $

—

$

(b) Contribution paid by Exelon.
(c) Contribution paid by PHI.

Pursuant  to  the  orders  approving  the  PHI  merger,  Exelon  made  equity  contributions  of  $73  million  , $46  million  and $49  million  to  Pepco,  DPL  and  ACE,
respectively, in the second quarter of 2016 to fund the after-tax amount of the customer bill credit and the customer base rate credit.

Redemptions of Preference Stock. BGE had $190 million of cumulative preference stock that was redeemable at its option at any time after October 1, 2015 for
the  redemption  price  of  $100 per  share,  plus  accrued  and  unpaid  dividends.  On  July  3,  2016,  BGE  redeemed  all  400,000 shares  of  its  outstanding  7.125%
Cumulative Preference Stock, 1993 Series and all 600,000 shares of its outstanding 6.990% Cumulative Preference Stock, 1995 Series for $100 million , plus
accrued and unpaid dividends. On September 18, 2016, BGE redeemed the remaining 500,000 shares of its outstanding 6.970% Cumulative Preference Stock,
1993 Series and the remaining 400,000 shares of its outstanding 6.700% Cumulative Preference Stock, 1993 Series for $90 million , plus accrued and unpaid
dividends. As of December 31, 2018 , BGE no longer has any preferred stock outstanding.

Other

For the year ended December 31, 2018 , other financing activities primarily consists of debt issuance costs. See Note 13 — Debt and Credit Agreements of the
Combined Notes to Consolidated Financial Statements’ for additional information.

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Credit Matters

Market Conditions

The Registrants fund liquidity needs for capital investment, working capital, energy hedging and other financial commitments through cash flows from continuing
operations, public debt offerings, commercial paper markets and large, diversified credit facilities. The credit facilities include $9.7 billion (including bilateral credit
facilities and credit facilities for project finance) in aggregate total commitments of which $8.0 billion was available as of December 31, 2018 , and of which no
financial institution has more than 7% of the aggregate commitments for the Registrants. The Registrants had access to the commercial paper market during
2018 to  fund  their  short-term  liquidity  needs,  when  necessary.  The  Registrants  routinely  review  the  sufficiency  of  their  liquidity  position,  including  appropriate
sizing of credit facility commitments, by performing various stress test scenarios, such as commodity price movements, increases in margin-related transactions,
changes in hedging levels and the impacts of hypothetical credit downgrades. The Registrants have continued to closely monitor events in the financial markets
and the financial institutions associated with the credit facilities, including monitoring credit ratings and outlooks, credit default swap levels, capital raising and
merger activity. See PART I. ITEM 1A. RISK FACTORS for additional information regarding the effects of uncertainty in the capital and credit markets.

The Registrants believe their cash flow from operating activities, access to credit markets and their credit facilities provide sufficient liquidity. If Generation lost its
investment  grade  credit  rating  as  of  December  31,  2018  ,  it  would  have  been  required  to  provide  incremental  collateral  of  $2.1  billion  to  meet  collateral
obligations for derivatives, non-derivatives, normal purchases and normal sales contracts and applicable payables and receivables, net of the contractual right of
offset under master netting agreements, which is well within the $4.1 billion of available credit capacity of its revolver.

The following table presents the incremental collateral that each Utility Registrant would have been required to provide in the event each Utility Registrant lost its
investment grade credit rating at December 31, 2018 and available credit facility capacity prior to any incremental collateral at December 31, 2018 :

PJM Credit Policy
Collateral

  Other Incremental Collateral Required

(a)

Available Credit Facility Capacity Prior to
Any Incremental Collateral

ComEd

PECO

BGE

Pepco

DPL

ACE
__________
(a) Represents incremental collateral related to natural gas procurement contracts.

Exelon Credit Facilities

$

9   $

—  

12  

11  

5  

—  

—   $

39  

69  

—  

11  

—  

998

600

599

292

299

300

Exelon  Corporate,  ComEd,  BGE,  Pepco,  DPL  and  ACE  meet  their  short-term  liquidity  requirements  primarily  through  the  issuance  of  commercial  paper.
Generation and PECO meet their short-term liquidity requirements primarily through the issuance of commercial paper and borrowings from the intercompany
money pool. P HI Corporate meets its short-term liquidity requirements primarily through the issuance of short-term notes and the Exelon intercompany money
pool.  The  Registrants  may  use  their  respective  credit  facilities  for  general  corporate  purposes,  including  meeting  short-term  funding  requirements  and  the
issuance of letters of credit.

See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional information of the Registrants’ credit
facilities and short term borrowing activity.

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Other Credit Matters

Capital Structure. At December 31, 2018 , the capital structures of the Registrants consisted of the following:

Long-term debt

Long-term debt to
affiliates (a)
Common equity

Member’s equity

Commercial paper and
notes payable
__________ 
(a)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

51%  

1%  

47%  

—%  

1%  

32%  

44%  

44%  

46%  

40%  

49%  

50%  

4%  

—%  

64%  

1%  

55%  

—%  

3%  

53%  

—%  

—%  

53%  

—%  

—%  

—  

59%  

—%  

50%  

—  

—%  

50%  

—  

—%  

—  

—%  

1%  

1%  

1%  

—%  

48%

—%

46%

—

6%

Includes approximately $390 million , $205 million and $184 million owed to unconsolidated affiliates of Exelon, ComEd, and PECO respectively. These special purpose
entities were created for the sole purposes of issuing mandatorily redeemable trust preferred securities of ComEd and PECO. See Note 2 — Variable Interest Entities of
the Combined Notes to Consolidated Financial Statements for additional information regarding the authoritative guidance for VIEs.

Security Ratings

The Registrants’ access to the capital markets, including the commercial paper market, and their respective financing costs in those markets, may depend on
the securities ratings of the entity that is accessing the capital markets.

The Registrants’ borrowings are not subject to default or prepayment as a result of a downgrading of securities, although such a downgrading of a Registrant’s
securities could increase fees and interest charges under that Registrant’s credit agreements.

As  part  of  the  normal  course  of  business,  the  Registrants  enter  into  contracts  that  contain  express  provisions  or  otherwise  permit  the  Registrants  and  their
counterparties  to  demand  adequate  assurance  of  future  performance  when  there  are  reasonable  grounds  for  doing  so.  In  accordance  with the  contracts  and
applicable  contracts  law,  if  the  Registrants  are  downgraded  by  a  credit  rating  agency,  it  is  possible  that  a  counterparty  would  attempt  to  rely  on  such  a
downgrade  as  a  basis  for  making  a  demand  for  adequate  assurance  of  future  performance,  which  could  include  the  posting  of  collateral.  See  Note  12 —
Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements for additional information on collateral provisions.

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Intercompany Money Pool

To provide an additional short-term borrowing option that will generally be more favorable to the borrowing participants than the cost of external financing, both
Exelon  and  PHI  operate  an  intercompany  money  pool.  Maximum  amounts  contributed  to  and  borrowed  from  the  money  pool  by  participant  and  the  net
contribution or borrowing as of December 31, 2018 , are presented in the following tables:

Exelon Intercompany Money Pool

Contributed (borrowed)

Exelon Corporate

Generation

PECO

BSC

PHI Corporate

PCI

PHI Intercompany Money Pool

Contributed (borrowed)

PHI Corporate

PHISCO

For the Year Ended December 31, 2018

Maximum
Contributed

Maximum
Borrowed

As of 
December 31, 2018

Contributed (Borrowed)

674   $

227  

285  

—  

—  

57  

For the Year Ended December 31, 2018

Maximum
Contributed

Maximum
Borrowed

1   $

34  

—   $

(389)  

(420)  

(403)  

(35)  

(1)  

—   $

—  

216

(100)

—

(173)

—

57

1

3

As of 
December 31, 2018

Contributed (Borrowed)

$

$

Investments in NDT Funds. Exelon, Generation and CENG maintain trust funds, as required by the NRC, to fund certain costs of decommissioning nuclear
plants.  The  mix  of  securities  in  the  trust  funds  is  designed  to  provide  returns  to  be  used  to  fund  decommissioning  and  to  offset  inflationary  increases  in
decommissioning  costs.  Generation  actively  monitors  the  investment  performance  of  the  trust  funds  and  periodically  reviews  asset  allocations  in  accordance
with  Generation’s  NDT  fund  investment  policy.  Generation’s  and  CENG's  investment  policies  establish  limits  on  the  concentration  of  holdings  in  any  one
company and also in any one industry. See Note  15 — Asset Retirement Obligations of the Combined Notes to Consolidated Financial Statements for additional
information regarding the trust funds, the NRC’s minimum funding requirements and related liquidity ramifications.

Shelf  Registration  Statements.  Exelon,  Generation,  ComEd,  PECO,  BGE,  Pepco,  DPL  and  ACE  have  a  currently  effective  combined  shelf  registration
statement  unlimited  in  amount,  filed  with  the  SEC,  that  will  expire  in  August  2019.  The  ability  of  each  Registrant  to  sell  securities  off  the  shelf  registration
statement or to access the private placement markets will depend on a number of factors at the time of the proposed sale, including other required regulatory
approvals, as applicable, the current financial condition of the Registrant, its securities ratings and market conditions.

Regulatory Authorizations. ComEd, PECO, BGE, Pepco, DPL and ACE are required to obtain short-term and long-term financing authority from Federal and
State Commissions as follows:

Short-term Financing Authority (a)

Long-term Financing Authority (a)

Commission

Expiration Date

Amount

Commission

Expiration Date

Amount (c)

ComEd (b)

PECO

BGE

Pepco

DPL

FERC

FERC

FERC

FERC

FERC

December 31, 2019

  $

December 31, 2019

December 31, 2019

December 31, 2019

December 31, 2019

ICC

PAPUC

MDPSC

2019 & 2021

  $

December 31, 2021

N/A

MDPSC / DCPSC

December 31, 2020

MDPSC / DPSC

December 31, 2020

1,533

1,900

400

400

150

—

ACE
__________
(a) Generation currently has blanket financing authority it received from FERC in connection with its market-based rate authority.

December 31, 2019

NJBPU

NJBPU

December 31, 2019

2,500  
1,500  
700  
500  
500  
350  

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(b) ComEd had $440 million available in long-term debt refinancing authority and $1,093 million available in new money long-term debt financing authority from the ICC as of

December 31, 2018 and has an expiration date of June 1, 2019 and August 1, 2021, respectively.

(c) ACE is currently in the process of requesting its long-term debt financing authority.

Exelon’s  ability  to  pay  dividends  on  its  common  stock  depends  on  the  receipt  of  dividends  paid  by  its  operating  subsidiaries.  The  payments  of  dividends  to
Exelon by its subsidiaries in turn depend on their results of operations and cash flows and other items affecting retained earnings.

•

•

•

•

ComEd is subject to restrictions in the event that (1) it exercises its right to extend the interest payment periods on the subordinated debt securities
issued to ComEd Financing III; (2) it defaults on its guarantee of the payment of distributions on the preferred trust securities of ComEd Financing III;
or (3) an event of default occurs under the Indenture under which the subordinated debt securities are issued.

PECO is subject to restrictions in the event that (1) it exercises its right to extend the interest payment periods on the subordinated debentures which
were issued to PEC L.P. or PECO Trust IV; (2) it defaults on its guarantee of the payment of distributions on the Series D Preferred Securities of PEC
L.P. or the preferred trust securities of PECO Trust IV; or (3) an event of default occurs under the Indenture under which the subordinated debentures
are issued.

BGE  is  subject  to  restrictions  established  by  the  MDPSC  that  prohibit  BGE  from  paying  a  dividend  on  its  common  shares  if  (a)  after  the  dividend
payment,  BGE’s  equity  ratio  would  be  below  48% as  calculated  pursuant  to  the  MDPSC’s  ratemaking  precedents  or  (b)  BGE’s  senior  unsecured
credit rating is rated by two of the three major credit rating agencies below investment grade.

Pepco,  DPL  and  ACE  are  subject  to  certain  dividend  restrictions  established  by  settlements  approved  in  the  District  of  Columbia,  Maryland,
Delaware, and New Jersey. Pepco, DPL and ACE are prohibited from paying a dividend on their common shares if (a) after the dividend payment,
Pepco's, DPL's or ACE's equity ratio would be below 48% as equity levels are calculated under the ratemaking precedents of the DCPSC, MDPSC,
DPSC,  and  NJBPU  or  (b)  Pepco's,  DPL's  or  ACE's  senior  unsecured  credit  rating  is  rated  by  one  of  the  three  major  credit  rating  agencies  below
investment grade. ACE is also subject to a dividend restriction which requires ACE to obtain the prior approval of the NJBPU before dividends can be
paid if its equity as a percent of its total capitalization, excluding securitization debt, falls below 30% .

At December 31, 2018 , Exelon had retained earnings of $14,766 million , including Generation’s undistributed earnings of $3,724 million , ComEd’s retained
earnings of $1,337 million consisting of retained earnings appropriated for future dividends of $2,976 million partially offset by $1,639 million of unappropriated
retained deficit, PECO’s retained earnings of $1,242 million , BGE’s retained earnings $1,640 million , and PHI's undistributed earnings of $62 million . See Note 
22  —  Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  regarding  fund  transfer
restrictions.

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Contractual Obligations and Off-Balance Sheet Arrangements

The  following  tables  summarize  the  Registrants’  future  estimated  cash  payments  as  of  December  31,  2018  under  existing  contractual  obligations,  including
payments  due  by  period.  See  Note    22  —  Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional
information regarding the Registrants’ commercial and other commitments, representing commitments potentially triggered by future events.

Exelon

Total

2019

2020 - 
2021

2022 - 
2023

Due 2024 
and beyond

Payment due within

Long-term debt (a)

Interest payments on long-term debt (b)

$

35,265   $

1,328   $

5,033   $

3,933   $

22,840  

1,446  

2,689  

2,372  

Capital leases

Operating leases (c)(d)

Purchase power obligations (e)

Fuel purchase agreements (f)

Electric supply procurement (f)

AEC purchase commitments (f)

Curtailment services commitments (f)

Long-term renewable energy and REC commitments (g)

Other purchase obligations (h)

DC PLUG obligation (i)

Construction commitments (j)

PJM regional transmission expansion commitments (k)

SNF obligation (l)

ZEC commitments (m)

Pension contributions (n)

Total contractual obligations

36  

1,378  

1,121  

5,984  

2,836  

2  

129  

1,838  

6,626  

160  

21  

396  

1,171  

1,404  

2,276  

21  

140  

365  

1,235  

1,828  

1  

29  

137  

4,676  

30  

21  

141  

—  

168  

301  

6  

292  

484  

2,078  

1,008  

1  

74  

265  

1,323  

60  

—  

237  

—  

337  

616  

1  

223  

98  

1,269  

—  

—  

26  

274  

247  

60  

—  

18  

—  

332  

752  

24,971

16,333

8

723

174

1,402

—

—

—

1,162

380

10

—

—

1,171

567

607

$

83,483   $

11,867

$

14,503

$

9,605

$

47,508

__________
(a)
(b)

Includes $390 million due after 2024 to ComEd and PECO financing trusts.
Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances. Variable rate interest obligations are estimated based on rates as of  December 31, 2018 . Includes estimated interest payments due to
ComEd and PECO financing trusts.
Includes amounts related to shared use land arrangements.

(c)
(d) Excludes  Generation's  contingent  operating  lease  payments  associated  with  contracted  generation  agreements.  These  amounts  are  included  within  purchase  power

obligations.

(e) Purchase power obligations include contingent operating lease payments associated with contracted generation agreements. Amounts presented represent Generation’s
expected payments under these arrangements at December 31, 2018 . Expected payments include certain fixed capacity charges which may be reduced based on plant
availability. Expected payments exclude renewable PPA contracts that are contingent in nature. Contained within Purchase power obligations are Net Capacity Purchases
of $126 million , $56 million , $35 million , $26 million , $20 million and $155 million for 2019 , 2020 , 2021 , 2022 , 2023 and thereafter, respectively.

(f) Represents commitments to purchase nuclear fuel, natural gas and related transportation, storage capacity and services, procure electric supply, and purchase AECs and

curtailment services.

(g) Primarily  related  to  ComEd  20-year  contracts  for  renewable  energy  and  RECs  beginning  in  June  2012.  ComEd  is permitted  to  recover  its  renewable  energy  and  REC
costs from retail customers with no mark-up. The commitments represent the earliest and maximum settlements with suppliers for renewable energy and RECs under the
existing contract terms.

(h) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

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(i) Related to DC PLUG project costs for assets funded by the District of Columbia for which the District of Columbia has assessed a charge on Pepco. Pepco will recover
this  charge  from  customers  through  a  volumetric  distribution  rider.  See  Note  4 — Regulatory  Matters  of  Combined  Notes  to  Consolidated  Financial  Statements  for
additional information.

(j) Represents  commitments  for  Generation's  ongoing  investments  in  new  natural  gas  generation  construction.    As  of  December  31,  2018,  the  commitments  relate  to  the

construction of a new dual fuel, natural peaking facility in Massachusetts.  Achievement of commercial operation related to this project is expected in 2019.

(k) Under their operating agreements with PJM, ComEd, PECO, BGE, DPL and ACE are committed to the construction of transmission facilities to maintain system reliability.

These amounts represent ComEd, PECO, BGE, DPL and ACE’s expected portion of the costs to pay for the completion of the required construction projects.

(l) See Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional information regarding SNF obligations.
(m) Annual ZEC commitment amounts will be published by the IPA each May prior to the start of the subsequent  planning year. Amounts presented in the table represent
management's estimate of ComEd's obligation based on forward energy prices and load forecasts. ComEd is permitted to recover its ZEC costs from retail customers with
no mark-up.

(n) These amounts represent Exelon’s expected contributions to its qualified pension plans. The projected contributions reflect a funding strategy of contributing the greater of
$300 million until all the qualified plans are fully funded on an ABO basis, and the minimum amounts under ERISA to avoid benefit restrictions and at-risk status. This level
funding  strategy  helps  minimize  volatility  of  future  period  required  pension  contributions.  These  amounts  represent  estimates  that  are  based  on  assumptions  that  are
subject  to  change.  Qualified  pension  contributions  for  years  after  2024 are  not  included.  See  Note  16 — Retirement Benefits  of  the  Combined  Notes  to  Consolidated
Financial Statements for additional information regarding estimated future pension benefit payments.

Generation 

Long-term debt

Interest payments on long-term debt (a)
Capital leases

Operating leases (b)(c)

Purchase power obligations (d)

Fuel purchase agreements (e)
Other purchase obligations (f)

Construction commitments (g)

SNF obligation (h)

Total contractual obligations

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

Payment due within

$

8,745   $

4,333  

14  

763  

1,121  

4,931  

1,742  

21  

1,171  

899   $

2,103   $

1,023   $

354  

7  

33  

365  

1,013  

1,114  

21  

—  

592  

6  

92  

484  

1,759  

224  

—  

—  

483  

1  

93  

98  

1,078  

98  

—  

—  

$

22,841   $

3,806

$

5,260

$

2,874

$

4,720

2,904

—

545

174

1,081

306

—

1,171

10,901

__________
(a)

Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances. Variable rate interest obligations are estimated based on rates as of December 31, 2018 .
Includes amounts related to shared use land arrangements.

(b)
(c) Excludes  Generation's  contingent  operating  lease  payments  associated  with  contracted  generation  agreements.  These  amounts  are  included  within  purchase  power

obligations.

(d) Purchase power obligations include contingent operating lease payments associated with contracted generation agreements. Amounts represent Generation’s expected
payments under these arrangements at December 31, 2018 . Expected payments include certain fixed capacity charges which may be reduced based on plant availability.
Expected payments exclude renewable PPA contracts that are contingent in nature. Contained within Purchase power obligations are Net Capacity Purchases of  $126
million , $56 million , $35 million , $26 million , $20 million and $155 million for 2019 , 2020 , 2021 , 2022 , 2023 and thereafter, respectively.

(e) Primarily represents commitments to purchase fuel supplies for nuclear and fossil generation, including those related to CENG.
(f) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

(g) Represents  commitments  for  Generation's  ongoing  investments  in  new  natural  gas  generation  construction.    As  of  December  31,  2018,  the  commitments  relate  to  the

construction of a new dual fuel, natural peaking facility in Massachusetts.  Achievement of commercial operation related to this project is expected in 2019.

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(h) See Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for additional information regarding SNF obligations.

ComEd

Long-term debt (a)

Interest payments on long-term debt (b)
Capital leases

Operating leases (c)

Electric supply procurement

Long-term renewable energy and REC commitments (d)

Other purchase obligations (e)

PJM regional transmission expansion commitments (f)

ZEC commitments (g)
Total contractual obligations

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

Payment due within

$

8,385   $

6,512  

300   $

339  

850   $

646  

—   $

614  

8  

23  

650  

1,497  

1,109  

176  

1,404  

—  

7  

419  

106  

1,050  

40  

168  

—  

9  

231  

203  

55  

136  

337  

—  

7  

—  

212  

2  

—  

332  

7,235

4,913

8

—

—

976

2

—

567

$

19,764   $

2,429

$

2,467

$

1,167

$

13,701

__________
(a)
(b)

Includes $206 million due after 2024 to a ComEd financing trust.
Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances. Variable rate interest obligations are estimated based on rates as of December 31, 2018 . Includes estimated interest payments due to the
ComEd financing trust.
Includes amounts related to shared use land arrangements.

(c)
(d) Primarily  related  to  ComEd  20-year  contracts  for  renewable  energy  and  RECs  beginning  in  June  2012.  ComEd  is permitted  to  recover  its  renewable  energy  and  REC
costs from retail customers with no mark-up. The commitments represent the maximum and earliest settlements with suppliers for renewable energy and RECs under the
existing contract terms.

(e) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

(f) Under  its  operating  agreement  with  PJM,  ComEd  is  committed  to  the  construction  of  transmission  facilities  to  maintain  system  reliability.  These  amounts  represent

ComEd’s expected portion of the costs to pay for the completion of the required construction projects.

(g) Annual ZEC commitment amounts will be published by the IPA each May prior to the start of the subsequent  planning year. Amounts presented in the table represent
management's estimate of ComEd's obligation based on forward energy prices and load forecasts. ComEd is permitted to recover its ZEC costs from retail customers with
no mark-up.

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PECO

Long-term debt (a)

Interest payments on long-term debt (b)
Operating leases (c)(d)

Fuel purchase agreements (e)

Electric supply procurement (e)

AEC purchase commitments (e)

Other purchase obligations (f)

PJM regional transmission expansion commitments (g)
Total contractual obligations

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

Payment due within

$

3,309   $

2,562  

25  

335  

530  

4  

668  

54  

—   $

300   $

131  

5  

116  

453  

2  

501  

27  

261  

10  

151  

77  

2  

156  

18  

400   $

242  

2,609

1,928

10  

33  

—  

—  

10  

9  

—

35

—

—

1

—

$

7,487   $

1,235

$

975

$

704

$

4,573

__________
(a)
(b)

Includes $184 million due after 2024 to PECO financing trusts.
Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances.
Includes amounts related to shared use land arrangements.

(c)
(d) Amounts related to certain real estate leases and railroad licenses effectively have indefinite payment periods. As a result, PECO has excluded these payments from the
remaining years as such amounts would not be meaningful. PECO’s average annual obligation for these arrangements, included in each of the years  2019 - 2023 , was
$5 million . Also includes amounts related to shared use land arrangements.

(e) Represents commitments to purchase natural gas and related transportation, storage capacity and services, procure electric supply, and purchase AECs.
(f) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

(g) Under its operating agreement with PJM, PECO is committed to the construction of transmission facilities to maintain system reliability. These amounts represent PECO’s

expected portion of the costs to pay for the completion of the required construction projects.

BGE

Long-term debt

Interest payments on long-term debt (a)
Operating leases (b)(c)(d)(e)

Fuel purchase agreements (f)

Electric supply procurement (f)

Curtailment services commitments (f)

Other purchase obligations (g)

PJM regional transmission expansion commitments (h)
Total contractual obligations

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

Payment due within

$

2,900   $

1,971  

143  

434  

1,070  

61  

584  

89  

—   $

300   $

113  

35  

76  

670  

10  

528  

35  

225  

68  

107  

400  

38  

50  

54  

550   $

191  

21  

94  

—  

13  

2  

—  

2,050

1,442

19

157

—

—

4

—

$

7,252   $

1,467

$

1,242

$

871

$

3,672

__________
(a)

Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances.
Includes amounts related to shared use land arrangements.

(b)

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(c) Amounts related to certain real estate leases and railroad licenses effectively have indefinite payment periods. As a result, BGE has excluded these payments from the
remaining years as such amounts would not be meaningful. BGE’s average annual obligation for these arrangements, included in each of the years 2019 - 2023 , was $1
million . Also includes amounts related to shared use land arrangements.
Includes all future lease payments on a 99 -year real estate lease that expires in 2106 .

(d)
(e) The  BGE  table  above  includes  minimum  future  lease  payments  associated  with  a  6-year  lease  for  the  Baltimore  City  conduit  system  that  became  effective  during  the
fourth  quarter  of  2016.  BGE's  total  commitments  under  the  lease  agreement  are  $26 million , $28 million , $28 million , and $14 million related  to  years  2019  -  2022,
respectively.

(f) Represents commitments to purchase natural gas and related transportation, storage capacity and services, procure electric supply, and curtailment services.
(g) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the BGE and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table. These
estimates are subject to significant variability from period to period.

(h) Under its operating agreement with PJM, BGE is committed to the construction of transmission facilities to maintain system reliability. These amounts represent BGE’s

expected portion of the costs to pay for the completion of the required construction projects.

PHI

Long-term debt

Interest payments on long-term debt (a)
Capital leases

Operating leases (b)

Fuel purchase agreements (c)

Long-term renewable energy and REC commitments (c)

Electric supply procurement (c)

Curtailment services commitments (c)

Other purchase obligations (d)

DC PLUG obligation (e)

PJM regional transmission expansion commitments (f)
Total contractual obligations

Payment due within

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

$

5,622   $

4,192  

111   $

260  

281   $

512  

810   $

476  

4,420

2,944

14  

377  

284  

341  

1,635  

68  

1,396  

160  

77  

14  

48  

30  

31  

993  

19  

893  

30  

39  

—  

89  

61  

62  

642  

36  

437  

60  

29  

—  

81  

64  

62  

—  

13  

34  

60  

9  

—

159

129

186

—

—

32

10

—

$

14,166   $

2,468   $

2,209   $

1,609   $

7,880

__________
(a)

Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances.
Includes amounts related to shared use land arrangements.

(b)
(c) Represents commitments to purchase natural gas and related transportation, storage capacity and services, procure electric renewable energy and RECs, procure electric

supply, and curtailment services.

(d) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

(e) Related to DC PLUG project costs for assets funded by the District of Columbia for which the District of Columbia has assessed a charge on Pepco. Pepco will recover
this  charge  from  customers  through  a  volumetric  distribution  rider.  See  Note  4 — Regulatory  Matters  of  Combined  Notes  to  Consolidated  Financial  Statements  for
additional information.

(f) Under  its  operating  agreement  with  PJM,  PHI  is  committed  to  the  construction  of  transmission  facilities  to  maintain  system  reliability.  These  amounts  represent  PHI’s

expected portion of the costs to pay for the completion of the required construction projects.

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Pepco

Long-term debt

Interest payments on long-term debt (a)
Capital leases

Operating leases (b)

Electric supply procurement (c)

Curtailment services commitments (c)

Other purchase obligations (d)

DC PLUG obligation (e)
Total contractual obligations

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

Payment due within

$

2,737   $

2,488  

14  

86  

663  

33  

908  

160  

1   $

1   $

138  

14  

11  

407  

4  

509  

30  

276  

—  

19  

256  

20  

337  

60  

310   $

256  

2,425

1,818

—  

16  

—  

9  

31  

60  

—

40

—

—

31

10

$

7,089   $

1,114   $

969   $

682   $

4,324

__________ 
(a)

Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances.
Includes amounts related to shared use land arrangements.

(b)
(c) Represents commitments to purchase procure electric supply and curtailment services.
(d) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

(e) Related to DC PLUG project costs for assets funded by the District of Columbia for which the District of Columbia has assessed a charge on Pepco. Pepco will recover
this  charge  from  customers  through  a  volumetric  distribution  rider.  See  Note  4 — Regulatory  Matters  of  Combined  Notes  to  Consolidated  Financial  Statements  for
additional information.

DPL

Long-term debt

Interest payments on long-term debt (a)
Operating leases (b)

Fuel purchase agreements (c)

Long-term renewable energy and associated REC commitments (c)

Electric supply procurement (c)

Curtailment services commitments (c)

Other purchase obligations (d)

PJM regional transmission expansion commitments (e)
Total contractual obligations

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

Payment due within

$

1,504   $

1,050  

96  

284  

341  

458  

31  

266  

9  

91   $

57  

14  

30  

31  

282  

12  

187  

3  

—   $

113  

500   $

111  

25  

61  

62  

176  

15  

77  

3  

22  

64  

62  

—  

4  

1  

3  

913

769

35

129

186

—

—

1

—

$

4,039   $

707   $

532   $

767   $

2,033

__________
(a)

Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances.
Includes amounts related to shared use land arrangements.

(b)
(c) Represents commitments to purchase natural gas and related transportation, storage capacity and services, procure electric renewable energy and RECs, procure electric

supply, and curtailment services.

(d) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

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(e) Under  its  operating  agreement  with  PJM,  DPL  is  committed  to  the  construction  of  transmission  facilities  to  maintain  system  reliability.  These  amounts  represent  DPL’s

expected portion of the costs to pay for the completion of the required construction projects.

ACE

Long-term debt

Interest payments on long-term debt (a)
Operating leases (b)

Electric supply procurement (c)

Curtailment services commitments (c)

Other purchase obligations (d)

PJM regional transmission expansion commitments (e)
Total contractual obligations

Total

2019

2020 - 
202 1

2022 - 
202 3

Due 2024 
and beyond

Payment due within

$

1,196   $

18   $

280   $

—   $

465  

32  

514  

4  

177  

68  

52  

7  

304  

3  

160  

36  

95  

11  

210  

1  

16  

26  

81  

9  

—  

—  

1  

6  

898

237

5

—

—

—

—

$

2,456   $

580   $

639   $

97   $

1,140

__________
(a)

Interest payments are estimated based on final maturity dates of debt securities outstanding at December 31, 2018 and do not reflect anticipated future refinancing, early
redemptions or debt issuances.
Includes amounts related to shared use land arrangements.

(b)
(c) Represents commitments to procure electric supply and curtailment services.
(d) Represents the future estimated value at December 31, 2018 of the cash flows associated with all contracts, both cancellable and non-cancellable, entered into between
the Registrants and third-parties for the provision of services and materials, entered into in the normal course of business not specifically reflected elsewhere in this table.
These estimates are subject to significant variability from period to period.

(e) Under its operating agreement with PJM, ACE is committed to the construction  of transmission facilities to maintain system reliability. These amounts represent ACE’s

expected portion of the costs to pay for the completion of the required construction projects.

See Note 22 — Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information  of  the  Registrants’
other commitments potentially triggered by future events.

For additional information regarding:

•

•

•

•

•

•

•

commercial paper, see Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements.

long-term debt, see Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements.

liabilities related to uncertain tax positions, see Note 14 — Income Taxes of the Combined Notes to Consolidated Financial Statements.

capital lease obligations, see Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements.

operating  leases  and  rate  relief  commitments,  see  Note  22 — Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial
Statements.

the nuclear decommissioning and SNF obligations, see Note 15 — Asset Retirement Obligations and Note 22 — Commitments and Contingencies of
the Combined Notes to Consolidated Financial Statements.

regulatory commitments, see Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements.

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•

•

•

variable interest entities, see Note 2 — Variable Interest Entities of the Combined Notes to Consolidated Financial Statements.

nuclear insurance, see Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements.

new accounting pronouncements, see Note 1 — Significant Accounting Policies of the Combined Notes to Consolidated Financial Statements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The  Registrants  are  exposed  to  market  risks  associated  with  adverse  changes  in  commodity  prices,  counterparty  credit,  interest  rates  and  equity  prices.
Exelon’s RMC approves risk management policies and objectives for risk assessment, control and valuation, counterparty credit approval, and the monitoring
and reporting of risk exposures. The RMC is chaired by the chief executive officer and includes the chief risk officer, chief strategy officer, chief executive officer
of  Exelon  Utilities,  chief  commercial  officer,  chief  financial  officer  and  chief  executive  officer  of  Constellation.  The  RMC  reports  to  the  Finance  and  Risk
Committee of the Exelon Board of Directors on the scope of the risk management activities.

Commodity Price Risk (All Registrants)

Commodity  price  risk  is  associated  with  price  movements  resulting  from  changes  in  supply  and  demand,  fuel  costs,  market  liquidity,  weather  conditions,
governmental regulatory and environmental policies and other factors. To the extent the total amount of energy Exelon generates and purchases differs from the
amount  of  energy  it  has  contracted  to  sell,  Exelon  is  exposed  to  market  fluctuations  in  commodity  prices.  Exelon  seeks  to  mitigate  its  commodity  price  risk
through the sale and purchase of electricity, fossil fuel and other commodities.

Generation

Electricity available from Generation’s owned or contracted generation supply in excess of Generation’s obligations to customers, including portions of the Utility
Registrants' retail load, is sold into the wholesale markets. To reduce commodity price risk caused by market fluctuations, Generation enters into non-derivative
contracts  as  well  as  derivative  contracts,  including  swaps,  futures,  forwards  and  options,  with  approved  counterparties  to  hedge  anticipated  exposures.
Generation uses derivative instruments as economic hedges to mitigate exposure to fluctuations in commodity prices. Generation expects the settlement of the
majority of its economic hedges will occur during 2019 through 2021 .

In  general,  increases  and  decreases  in  forward  market  prices  have  a  positive  and  negative  impact,  respectively,  on  Generation’s  owned  and  contracted
generation  positions  which have  not  been  hedged.  Exelon's hedging  program  involves the  hedging of  commodity  price risk for Exelon's expected  generation,
typically on a ratable basis over three-year periods. As of December 31, 2018 , the percentage  of expected generation hedged for the Mid-Atlantic, Midwest,
New York and ERCOT reportable segments is 89% - 92% , 56% - 59% and 32% - 35% for 2019 , 2020 and 2021 , respectively.  The percentage of expected
generation hedged is the amount of equivalent sales divided by the expected generation. Expected generation is the volume of energy that best represents our
commodity position in energy markets from owned or contracted generating facilities based upon a simulated dispatch model that makes assumptions regarding
future  market  conditions,  which  are  calibrated  to  market  quotes  for  power,  fuel,  load  following  products  and  options.  Equivalent  sales  represent  all  hedging
products,  which  include  economic  hedges  and  certain  non-derivative  contracts,  including  Generation’s  sales  to  ComEd,  PECO  and  BGE  to  serve  their  retail
load.

A  portion  of  Generation’s  hedging  strategy  may  be  accomplished  with  fuel  products  based  on  assumed  correlations  between  power  and  fuel  prices,  which
routinely change in the market. Market price risk exposure is the risk of a change in the value of unhedged positions. The forecasted market price risk exposure
for Generation’s entire economic hedge portfolio associated with a $5 reduction in the annual average around-the-clock energy price based on December 31,
2018  market  conditions  and  hedged  position  would  be  decreases  in  pre-tax  net  income  of  approximately  $57  million  ,  $383  million  and  $618  million  ,
respectively, for 2019 , 2020 and 2021 . Power price sensitivities are derived by adjusting power price assumptions while keeping all other price inputs constant.
Generation actively manages its portfolio to mitigate market price risk exposure for its unhedged position. Actual

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results could differ depending on the specific timing of, and markets affected by, price changes, as well as future changes in Generation’s portfolio. See Note 12
— Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements for additional information.

Proprietary Trading Activities

Proprietary  trading  portfolio  activity  for  the  year  ended  December  31,  2018  ,  resulted  in  pre-tax  gains  of  $42 million due  to  net  mark-to-market  gains  of  $17
million and realized gains of $25 million . Generation has not segregated proprietary trading activity within the following discussion because of the relative size of
the  proprietary  trading  portfolio  in  comparison  to  Generation’s  total  Revenue  net  of  purchased  power  and  fuel  expense.  See  Note  12 — Derivative Financial
Instruments of the Combined Notes to Consolidated Financial Statements for additional information.

Fuel Procurement

Generation procures natural gas through long-term and short-term contracts, and spot-market purchases. Nuclear fuel assemblies are obtained predominantly
through  long-term  uranium  concentrate  supply  contracts,  contracted  conversion  services,  contracted  enrichment  services,  or  a  combination  thereof,  and
contracted  fuel  fabrication  services.  The  supply  markets  for  uranium  concentrates  and  certain  nuclear  fuel  services  are  subject  to  price  fluctuations  and
availability restrictions. Supply market conditions may make Generation’s procurement contracts subject to credit risk related to the potential non-performance of
counterparties to deliver the contracted commodity or service at the contracted prices. Approximately  62% of Generation’s uranium concentrate requirements
from 2019 through 2023 are supplied by three producers. In the event of non-performance by these or other suppliers, Generation believes that replacement
uranium concentrates  can be obtained,  although  at prices that may be unfavorable  when compared to the  prices under  the current supply agreements.  Non-
performance by these counterparties could have a material adverse impact on Exelon’s and Generation’s financial statements.

ComEd

ComEd entered into 20-year contracts for renewable energy and RECs beginning in June 2012. ComEd is permitted to recover its renewable energy and REC
costs from retail customers with no mark-up. The annual commitments represent the maximum settlements with suppliers for renewable energy and RECs under
the existing contract terms. Pursuant to the ICC’s Order on December 19, 2012, ComEd’s commitments under the existing long-term contracts were reduced for
the June 2013 through May 2014 procurement period. In addition, the ICC’s December 18, 2013 Order approved the reduction of ComEd’s commitments under
those contracts for the June 2014 through May 2015 procurement period, and the amount of the reduction was approved by the ICC in March 2014.

ComEd has block energy contracts to procure electric supply that are executed through a competitive procurement process, which is further discussed in Note 4
— Regulatory Matters of the Combined Notes to Consolidated Financial Statements. The block energy contracts are considered derivatives and qualify for the
normal purchases and normal sales scope exception under current derivative authoritative guidance, and as a result are accounted for on an accrual basis of
accounting. ComEd does not execute derivatives for speculative or proprietary trading purposes. For additional information on these contracts, see Note 12 —
Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements.

PECO, BGE, Pepco, DPL and ACE

PECO, BGE, Pepco, DPL and ACE have contracts to procure electric supply that are executed through a competitive procurement process, which are further
discussed in Note 4 — Regulatory Matters of the Combined Notes to Consolidated Financial Statements. PECO, BGE, Pepco, DPL and ACE have certain full
requirements  contracts,  which  are  considered  derivatives  and  qualify  for  the  normal  purchases  and  normal  sales  scope  exception  under  current  derivative
authoritative guidance, and as a result are accounted for on an accrual basis of accounting. Other full requirements contracts are not derivatives.

PECO, BGE and DPL have also executed derivative natural gas contracts, which either qualify for the normal purchases and normal sales exception or have no
mark-to-market  balances  because  the  derivatives  are  index  priced,  to  hedge  their  long-term  price  risk  in  the  natural  gas  market.  The  hedging  programs  for
natural gas procurement have no direct impact on their financial statements.

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PECO, BGE, Pepco, DPL and ACE do not execute derivatives for speculative or proprietary trading purposes. For additional information on these contracts, see
Note 12 — Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements.

Trading and Non-Trading Marketing Activities

The  following  table  detailing  Exelon’s,  Generation’s  and  ComEd’s  trading  and  non-trading  marketing  activities  are  included  to  address  the  recommended
disclosures by the energy industry’s Committee of Chief Risk Officers (CCRO).

The following table provides detail on changes in Exelon’s, Generation’s and ComEd’s commodity mark-to-market net asset or liability balance sheet position
from December 31, 2016 to December 31, 2018 . It indicates the drivers behind changes in the balance sheet amounts. This table incorporates the mark-to-
market activities that are immediately recorded in earnings. This table excludes all NPNS contracts and does not segregate proprietary trading activity. See Note
12 — Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements for additional information on the balance sheet classification
of the mark-to-market energy contract net assets (liabilities) recorded as of December 31, 2018 and 2017 .

Total mark-to-market energy contract net assets (liabilities) at December 31, 2016 (a)
Total change in fair value during 2017 of contracts recorded in result of operations

Reclassification to realized at settlement of contracts recorded in results of operations

Changes in fair value—recorded through regulatory assets and liabilities (b)
Changes in allocated collateral

Net option premium received

Option premium amortization
Upfront payments and amortizations (c) 

Other miscellaneous (d)

Total mark-to-market energy contract net assets (liabilities) at December 31, 2017 (a) 
Total change in fair value during 2018 of contracts recorded in result of operations

Reclassification to realized at settlement of contracts recorded in results of operations

Contracts received at acquisition date (e)

Changes in fair value—recorded through regulatory assets and liabilities (b)
Changes in allocated collateral

Net option premium paid

Option premium amortization
Upfront payments and amortizations (c) 

Exelon

Generation

ComEd

$

719

$

977   $

(258)

110  

(273)  

(1)  

140  

(28)  

(7)  

(24)  

31  

667  

270  

(570)  

(19)  

8  

(110)  

43  

(10)  

20  

110  

(273)  

—  

137  

(28)  

(7)  

(24)  

31  

923  

270  

(570)  

(19)  

—  

(109)  

43  

(10)  

20  

—

—

2

—

—

—

—

—

(256)

—

—

—

7

—

—

—

—

Total mark-to-market energy contract net assets (liabilities) at December 31, 2018 (a) 
__________
(a) Amounts are shown net of collateral paid to and received from counterparties.
(b) For ComEd,  the  changes  in fair  value  are recorded  as a change  in regulatory  assets  or liabilities.  As of  December 31, 2017  and 2018 , ComEd recorded a regulatory
liability of $256 million and $249 million , respectively, related to its mark-to-market derivative liabilities with Generation and unaffiliated suppliers. ComEd recorded  $18
million of decreases in fair value and an increase for realized losses due to settlements of $20 million in purchased power expense associated with floating-to-fixed energy
swap suppliers for the year ended December 31, 2017 . ComEd recorded $24 million of decreases in fair value

548   $

299   $

(249)

$

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and  realized  losses  due  to  settlements  of  $17  million  recorded  in  purchased  power  expense  associated  with  floating-to-fixed  energy  swap  contracts  with  unaffiliated
suppliers for the year ended December 31, 2018 .
Includes derivative contracts acquired or sold by Generation through upfront payments or receipts of cash, excluding option premiums, and the associated amortizations.

(c)
(d) As  a  result  of  the  bankruptcy  filing  for  EGTP  on  November  7,  2017,  the  net  mark-to-market  commodity  contracts  were  deconsolidated  from  Exelon's  and  Generation's

consolidated financial statements.
Includes fair value from contracts received at acquisition of the Everett Marine Terminal.

(e)

Fair Values

The following tables present maturity and source of fair value for Exelon, Generation and ComEd mark-to-market commodity contract net assets (liabilities). The
tables  provide  two  fundamental  pieces  of  information.  First,  the  tables  provide  the  source  of  fair  value  used  in  determining  the  carrying  amount  of  the
Registrants’ total mark-to-market net assets (liabilities), net of allocated collateral. Second, the tables show the maturity, by year, of the Registrants’ commodity
contract net assets (liabilities) net of allocated collateral, giving an indication of when these mark-to-market amounts will settle and either generate or require
cash.  See  Note  11 — Fair  Value  of  Financial  Assets  and  Liabilities  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  additional  information
regarding fair value measurements and the fair value hierarchy.

Exelon

2019

2020

2021

2022

2023

  2024 and Beyond  

Total Fair
Value

Maturities Within

Normal Operations, Commodity derivative contracts (a)(b) :

Actively quoted prices (Level 1)

$

(11)   $

(33)   $

(6)   $

(8)   $

14   $

Prices provided by external sources (Level 2)

45  

(33)  

5  

—  

—  

Prices based on model or other valuation methods (Level
3) (c)
Total

291  

174  

—  

(63)  

(23)  

$

325   $

108   $

(1)   $

(71)   $

(9)   $

—   $

—  

(53)  

(53)   $

(44)

17

326

299

__________
(a) Mark-to-market gains and losses on other economic hedge and trading derivative contracts that are recorded in results of operations.
(b) Amounts are shown net of collateral paid to and received from counterparties (and offset against mark-to-market assets and liabilities) of  $357 million at December 31,

2018 .
Includes ComEd’s net assets (liabilities) associated with the floating-to-fixed energy swap contracts with unaffiliated suppliers.

(c)

Generation

2019

2020

2021

2022

2023

2024 and Beyond  

Total Fair
Value

Maturities Within

Normal Operations, Commodity derivative contracts (a)(b) :

Actively quoted prices (Level 1)

$

(11)   $

(33)   $

(6)   $

(8)   $

14   $

Prices provided by external sources (Level 2)

45  

(33)  

5  

—  

—  

Prices based on model or other valuation methods (Level
3) (c)

Total

317  

199  

25  

(37)  

3  

$

351   $

133   $

24   $

(45)   $

17   $

—   $

—  

68  

68   $

(44)

17

575

548

__________
(a) Mark-to-market gains and losses on other economic hedge and trading derivative contracts that are recorded in the results of operations.
(b) Amounts are shown net of collateral paid to and received from counterparties (and offset against mark-to-market assets and liabilities) of  $357 million at December 31,

2018 .

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ComEd

2019

2020

2021

2022

2023

  2024 and Beyond  

Fair
Value

Maturities Within

Prices based on model or other valuation methods (Level 3)
(a)  
__________
(a) Represents ComEd’s net liabilities associated with the floating-to-fixed energy swap contracts with unaffiliated suppliers.

(26)   $

(25)   $

(25)   $

$

(26)   $

(26)   $

(121)   $

(249)

Credit Risk, Collateral and Contingent Related Features (All Registrants)

The  Registrants  would  be  exposed  to  credit-related  losses  in  the  event  of  non-performance  by  counterparties  that  execute  derivative  instruments.  The  credit
exposure  of  derivative  contracts,  before  collateral,  is  represented  by  the  fair  value  of  contracts  at  the  reporting  date.  See  Note  12  —  Derivative  Financial
Instruments of the Combined Notes to Consolidated Financial Statements for a detailed discussion of credit risk, collateral, and contingent related features.

Generation

The  following  tables  provide  information  on  Generation’s  credit  exposure  for  all  derivative  instruments,  normal  purchases  and  normal  sales  agreements,  and
applicable  payables  and  receivables,  net  of  collateral  and  instruments  that  are  subject  to  master  netting  agreements,  as  of  December  31,  2018  . The tables
further delineate that exposure by credit rating of the counterparties and provide guidance on the concentration of credit risk to individual counterparties and an
indication  of  the  duration  of  a  company’s  credit  risk  by  credit  rating  of  the  counterparties.  The  figures  in  the  tables  below  exclude  credit  risk  exposure  from
individual  retail  customers,  uranium  procurement  contracts,  and  exposure  through  RTOs,  ISOs  and  commodity  exchanges,  which  are  discussed  below.
Additionally, the figures in the tables below exclude exposures with affiliates, including net receivables with ComEd, PECO, BGE, Pepco, DPL and ACE of $43
million , $30 million , $24 million , $28 million , $7 million and $5 million respectively. See Note 25 —  Related  Party  Transactions  of  the  Combined  Notes  to
Consolidated Financial Statements for additional information.

Rating as of December 31, 2018
Investment grade

Non-investment grade

No external ratings

Internally rated—investment grade

Internally rated—non-investment
grade

Total

$

$

Total
Exposure
Before Credit
Collateral

Credit 
Collateral  (a)

Net
Exposure

Number of
Counterparties
Greater than 10%
of Net Exposure

Net Exposure of
Counterparties
Greater than 10%
of Net Exposure

795   $

133  

181  

92  

—   $

45  

1  

6  

795  

88  

180  

86  

1,201   $

52   $

1,149  

167

1   $

—  

—  

—  

1   $

153

—

—

—

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Rating as of December 31, 2018
Investment grade

Non-investment grade

No external ratings

Internally rated—investment grade

Internally rated—non-investment grade

Total

Net Credit Exposure by Type of Counterparty
Financial institutions

Investor-owned utilities, marketers, power producers

Energy cooperatives and municipalities

Other

Total

Maturity of Credit Risk Exposure

Less than
2 Years

2-5
Years

Exposure
Greater than
5 Years

Total Exposure
Before Credit
Collateral

$

$

755   $

131  

126  

82  

1,094   $

23   $

2  

26  

5  

56   $

17   $

—  

29  

5  

51   $

As of December 31, 2018

$

$

795

133

181

92

1,201

12

737

324

76

1,149

__________
(a) As of December 31, 2018 , credit collateral held from counterparties where Generation had credit exposure included $17 million of cash and $ 35 million of letters of credit.

The Utility Registrants

Credit risk for the Utility Registrants is governed by credit and collection policies, which are aligned with state regulatory requirements. The Utility Registrants are
currently  obligated  to  provide  service  to  all  electric  customers  within  their  franchised  territories.  The  Utility  Registrants  record  a  provision  for  uncollectible
accounts,  based  upon  historical  experience,  to  provide  for  the  potential  loss  from  nonpayment  by  these  customers.  The  Utility  Registrants  will  monitor
nonpayment from customers and will make any necessary adjustments to the provision for uncollectible accounts. See Note 1 — Significant Accounting Policies
of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  the  allowance  for  uncollectible  accounts  policy.  The  Utility  Registrants  did  not  have  any
customers  representing  over  10%  of  their  revenues  as  of  December  31,  2018  .  See  Note  4 — Regulatory  Matters  of  the  Combined  Notes  to  Consolidated
Financial Statements for additional information.

As of December 31, 2018 , ComEd, PECO, BGE, Pepco, DPL and ACE's net credit exposure to suppliers was immaterial. See Note 12 — Derivative Financial
Instruments of the Combined Notes to Consolidated Financial Statements.

Collateral (All Registrants)

Generation

As part of the normal course of business, Generation routinely enters into physical or financial contracts for the sale and purchase of electricity, natural gas and
other commodities. In accordance with the contracts and applicable law, if Generation is downgraded by a credit rating agency, especially if such downgrade is
to a level below investment grade, it is possible that a counterparty would attempt to rely on such a downgrade as a basis for making a demand for adequate
assurance of future performance. Depending on Generation’s net position with a counterparty, the demand could be for the posting of collateral. In the absence
of expressly agreed-to provisions that specify the collateral that must be provided, collateral requested will be a function of the facts and circumstances of the
situation at the time of the demand. See Note 12 — Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements for additional
information regarding collateral requirements. See Note 22 — Commitments and Contingencies of the Combined Notes to Consolidated Financial Statements for
additional information regarding the letters of credit supporting the cash collateral.

Generation transacts output through bilateral contracts. The bilateral contracts are subject to credit risk, which relates to the ability of counterparties to meet their
contractual payment obligations. Any failure to collect these

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payments  from  counterparties  could  have  a  material  impact  on  Exelon’s  and  Generation’s  financial  statements.  As  market  prices  rise  above  or  fall  below
contracted price levels, Generation is required to post collateral with purchasers; as market prices fall below contracted price levels, counterparties are required
to post collateral with Generation. To post collateral, Generation depends on access to bank credit facilities, which serve as liquidity sources to fund collateral
requirements. See ITEM 7. Liquidity and Capital Resources — Credit Matters — Exelon Credit Facilities for additional information.

The Utility Registrants

As of December 31, 2018 , ComEd held $38 million in collateral from suppliers in association with energy procurement contracts, approximately $31 million in
collateral from suppliers for REC contract obligations and approximately $ 19 million in collateral from suppliers for long-term renewable energy contracts. BGE
is  not  required  to  post  collateral  under  its  electric  supply  contracts  but  was  holding  an  immaterial  amount  of  collateral  under  its  electric  supply  procurement
contracts.  BGE  was  not  required  to  post  collateral  under  its  natural  gas  procurement  contracts,  but  was  holding  an  immaterial  amount  of  collateral  under  its
natural gas procurement contracts. Pepco and DPL were not required to post collateral under their energy and/or natural gas procurement contracts, but were
holding  an  immaterial  amount  of  collateral  under  their  respective  electric  supply  procurement  contracts.  PECO  and  ACE  were  not  required  to  post  collateral
under  their  energy  and/or  natural  gas  procurement  contracts.  See  Note  4  —  Regulatory  Matters  and  Note  12  —  Derivative  Financial  Instruments  of  the
Combined Notes to Consolidated Financial Statements for additional information.

RTOs and ISOs (All Registrants)

All Registrants  participate  in all, or  some,  of  the  established,  wholesale  spot  energy  markets  that  are  administered  by  PJM,  ISO-NE,  ISO-NY,  CAISO,  MISO,
SPP, AESO, OIESO and ERCOT. ERCOT is not subject to regulation by FERC but performs a similar function in Texas to that performed by RTOs in markets
regulated  by  FERC.  In  these  areas,  power  is  traded  through  bilateral  agreements  between  buyers  and  sellers  and  on  the  spot  energy  markets  that  are
administered  by  the  RTOs  or  ISOs,  as  applicable.  In  areas  where  there  is  no  spot  energy  market,  electricity  is  purchased  and  sold  solely  through  bilateral
agreements. For sales into the spot markets administered by an RTO or ISO, the RTO or ISO maintains financial assurance policies that are established and
enforced by those administrators. The credit policies of the RTOs and ISOs may, under certain circumstances, require that losses arising from the default of one
member on spot energy market transactions be shared by the remaining participants. Non-performance or non-payment by a major counterparty could result in a
material adverse impact on the Registrants’ financial statements.

Exchange Traded Transactions (Exelon, Generation, PHI and DPL)

Generation  enters  into  commodity  transactions  on  NYMEX,  ICE,  NASDAQ,  NGX  and  the  Nodal  exchange  ("the  Exchanges").  DPL  enters  into  commodity
transactions  on  ICE.  The  Exchange  clearinghouses  act  as  the  counterparty  to  each  trade.  Transactions  on  the  Exchanges  must  adhere  to  comprehensive
collateral and margining requirements. As a result, transactions on Exchanges are significantly collateralized and have limited counterparty credit risk.

Interest Rate and Foreign Exchange Risk (All Registrants)

The Registrants use a combination of fixed-rate and variable-rate debt to manage interest rate exposure. The Registrants may also utilize interest rate swaps to
manage their interest rate exposure. At December 31, 2018 , Exelon had $800 million of notional amounts of fixed-to-floating hedges outstanding and Exelon
and  Generation  had  $622  million  of  notional  amounts  of  floating-to-fixed  hedges  outstanding.  A  hypothetical  50  basis  point  increase  in  the  interest  rates
associated with unhedged variable-rate debt (excluding Commercial Paper) and fixed-to-floating swaps would result in approximately a  $6 million decrease in
Exelon Consolidated pre-tax income for the year ended December 31, 2018 . To manage foreign exchange rate exposure associated with international energy
purchases in currencies other than U.S. dollars, Generation utilizes foreign currency derivatives, which are typically designated as economic hedges. See Note
12 — Derivative Financial Instruments of the Combined Notes to Consolidated Financial Statements for additional information.

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Equity Price Risk (Exelon and Generation)

Exelon and Generation maintain trust funds, as required by the NRC, to fund certain costs of decommissioning its nuclear plants. As of December 31, 2018 ,
Generation’s NDT funds are reflected at fair value in its Consolidated Balance Sheets. The mix of securities in the trust funds is designed to provide returns to be
used  to  fund  decommissioning  and  to  compensate  Generation  for  inflationary  increases  in  decommissioning  costs;  however,  the  equity  securities  in  the  trust
funds  are  exposed  to  price  fluctuations  in  equity  markets,  and  the  value  of  fixed-rate,  fixed-income  securities  are  exposed  to  changes  in  interest  rates.
Generation actively monitors the investment performance of the trust funds and periodically reviews asset allocation in accordance with Generation’s NDT fund
investment policy. A hypothetical 10% increase in interest rates and decrease in equity prices would result in a $529 million reduction in the fair value of the trust
assets.  This  calculation  holds  all  other  variables  constant  and  assumes  only  the  discussed  changes  in  interest  rates  and  equity  prices.  See  ITEM  7.
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS for additional information of equity price risk
as a result of the current capital and credit market conditions.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Generation

General

Generation’s  integrated  business  consists  of  the  generation,  physical  delivery  and  marketing  of  power  across  multiple  geographical  regions  through  its
customer-facing business, Constellation, which sells electricity and natural gas to both wholesale and retail customers. Generation also sells renewable energy
and  other  energy-related  products  and  services.  Generation  has  six  reportable  segments  consisting  of  the  Mid-Atlantic,  Midwest,  New  England,  New  York,
ERCOT and Other Power Regions. These segments are discussed in further detail in ITEM 1. BUSINESS — Exelon Generation Company, LLC of this Form 10-
K.

Executive Overview

A discussion of items pertinent to Generation’s executive overview is set forth under ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
CONDITION AND RESULTS OF OPERATIONS — Exelon Corporation — Executive Overview of this Form 10-K.

Results of Operations

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 and Year Ended December 31, 2017 Compared to Year Ended
December 31, 2016

A discussion of Generation’s results of operations for 2018 compared to 2017 and 2017 compared to 2016 is set forth under Results of Operations—Generation
in EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

Generation’s  business  is  capital  intensive  and  requires  considerable  capital  resources.  Generation’s  capital  resources  are  primarily  provided  by  internally
generated cash flows from operations and, to the extent necessary, external financing, including the issuance of long-term debt, commercial paper, participation
in the intercompany money pool or capital contributions from Exelon. Generation’s access to external financing at reasonable terms is dependent on its credit
ratings and general business conditions, as well as that of the utility industry in general. If these conditions deteriorate to where Generation no longer has access
to the capital markets at reasonable terms, Generation has credit facilities in the aggregate of $5.3 billion that currently support its commercial paper program
and issuances of letters of credit. 

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital resources are used primarily to fund Generation’s capital requirements, including construction expenditures, retire debt, pay dividends, fund pension and
other postretirement benefit obligations and invest in new and existing ventures. Generation spends a significant amount of cash on capital improvements and
construction projects that have a long-term return on investment.

Cash Flows from Operating Activities

A  discussion  of  items  pertinent  to  Generation’s  cash  flows  from  operating  activities  is  set  forth  under  Cash  Flows  from  Operating  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A  discussion  of  items  pertinent  to  Generation’s  cash  flows  from  investing  activities  is  set  forth  under  Cash  Flows  from  Investing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

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Cash Flows from Financing Activities

A  discussion  of  items  pertinent  to  Generation’s  cash  flows  from  financing  activities  is  set  forth  under  Cash  Flows  from  Financing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Credit Matters

A discussion of credit matters pertinent to Generation is set forth under Credit Matters in EXELON CORPORATION — Liquidity and Capital Resources of this
Form 10-K.

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of Generation’s contractual obligations, commercial commitments and off-balance sheet arrangements is set forth under Contractual Obligations
and Off-Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K. 

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of Generation’s critical accounting policies and estimates. 

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Generation

Generation  is  exposed  to  market  risks  associated  with  commodity  price,  credit,  interest  rates  and  equity  price.  These  risks  are  described  above  under
Quantitative and Qualitative Disclosures about Market Risk — Exelon.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

ComEd

General

ComEd operates in a single business segment and its operations consist of the purchase and regulated retail sale of electricity and the provision of distribution
and transmission services to retail customers in northern Illinois, including the City of Chicago. This segment is discussed in further detail in ITEM 1. BUSINESS
—ComEd of this Form 10-K.

Executive Overview

A discussion of items pertinent to ComEd’s executive overview is set forth under EXELON CORPORATION—Executive Overview of this Form 10-K.

Results of Operations

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 and Year Ended December 31, 2017 Compared to Year Ended
December 31, 2016

A discussion of ComEd’s results of operations for 2018 compared to 2017 and for 2017 compared to 2016 is set forth under Results of Operations—ComEd in
EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

ComEd’s  business  is  capital  intensive  and  requires  considerable  capital  resources.  ComEd’s  capital  resources  are  primarily  provided  by  internally  generated
cash  flows  from  operations  and,  to  the  extent  necessary,  external  financing,  including  the  issuance  of  long-term  debt,  commercial  paper  or  credit  facility
borrowings. ComEd’s access to external financing at reasonable terms is dependent on its credit ratings and general business conditions, as well as that of the
utility industry in general. At December 31, 2018 , ComEd had access to a revolving credit facility with aggregate bank commitments of $1 billion .

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital  resources  are  used  primarily  to  fund  ComEd’s  capital  requirements,  including  construction  expenditures,  retire  debt,  pay  dividends,  fund  pension  and
other  postretirement  benefit  obligations  and  invest  in  new  and  existing  ventures.  ComEd  spends  a  significant  amount  of  cash  on  capital  improvements  and
construction  projects  that  have  a  long-term  return  on  investment.  Additionally,  ComEd  operates  in  rate-regulated  environments  in  which  the  amount  of  new
investment recovery may be limited and where such recovery takes place over an extended period of time.

Cash Flows from Operating Activities

A  discussion  of  items  pertinent  to  ComEd’s  cash  flows  from  operating  activities  is  set  forth  under  Cash  Flows  from  Operating  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A  discussion  of  items  pertinent  to  ComEd’s  cash  flows  from  investing  activities  is  set  forth  under  Cash  Flows  from  Investing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Financing Activities

A  discussion  of  items  pertinent  to  ComEd’s  cash  flows  from  financing  activities  is  set  forth  under  Cash  Flows  from  Financing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

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Credit Matters

A discussion of credit matters pertinent to ComEd is set forth under Credit Matters in EXELON CORPORATION — Liquidity and Capital Resources of this Form
10-K.

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of ComEd’s contractual obligations, commercial commitments and off-balance sheet arrangements is set forth under Contractual Obligations and
Off-Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of ComEd’s critical accounting policies and estimates.

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

ComEd

ComEd  is  exposed  to  market  risks  associated  with  commodity  price,  credit  and  interest  rates.  These  risks  are  described  above  under  Quantitative  and
Qualitative Disclosures about Market Risk— Exelon.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

PECO

General

PECO operates in a single business segment and its operations consist of the purchase and regulated retail sale of electricity and the provision of distribution
and  transmission  services  in  southeastern  Pennsylvania  including  the  City  of  Philadelphia,  and  the  purchase  and  regulated  retail  sale  of  natural  gas  and  the
provision  of  distribution  service  in  Pennsylvania  in  the  counties  surrounding  the  City  of  Philadelphia.  This  segment  is  discussed  in  further  detail  in  ITEM  1.
BUSINESS—PECO of this Form 10-K.

Executive Overview

A discussion of items pertinent to PECO’s executive overview is set forth under EXELON CORPORATION—Executive Overview of this Form 10-K.

Results of Operations

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 and Year Ended December 31, 2017 Compared to Year Ended
December 31, 2016  

A discussion of PECO’s results of operations for 2018 compared to 2017 and for 2017 compared to 2016 is set forth under Results of Operations—PECO in
EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

PECO’s business is capital intensive and requires considerable capital resources. PECO’s capital resources are primarily provided by internally generated cash
flows  from  operations  and,  to  the  extent  necessary,  external  financing,  including  the  issuance  of  long-term  debt,  commercial  paper  or  participation  in  the
intercompany money pool. PECO’s access to external financing at reasonable terms is dependent on its credit ratings and general business conditions, as well
as that of the utility industry in general. If these conditions deteriorate to where PECO no longer has access to the capital markets at reasonable terms, PECO
has access to a revolving credit facility. At December 31, 2018 , PECO had access to a revolving credit facility with aggregate bank commitments of $600 million
.

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital  resources  are  used  primarily  to  fund  PECO’s  capital  requirements,  including  construction  expenditures,  retire  debt,  pay  dividends,  fund  pension  and
other  postretirement  benefit  obligations  and  invest  in  new  and  existing  ventures.  PECO  spends  a  significant  amount  of  cash  on  capital  improvements  and
construction  projects  that  have  a  long-term  return  on  investment.  Additionally,  PECO  operates  in  a  rate-regulated  environment  in  which  the  amount  of  new
investment recovery may be limited and where such recovery takes place over an extended period of time.

Cash Flows from Operating Activities

A  discussion  of  items  pertinent  to  PECO’s  cash  flows  from  operating  activities  is  set  forth  under  Cash  Flows  from  Operating  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A  discussion  of  items  pertinent  to  PECO’s  cash  flows  from  investing  activities  is  set  forth  under  Cash  Flows  from  Investing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

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Cash Flows from Financing Activities

A  discussion  of  items  pertinent  to  PECO’s  cash  flows  from  financing  activities  is  set  forth  under  Cash  Flows  from  Financing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Credit Matters

A discussion of credit matters pertinent to PECO is set forth under Credit Matters in “EXELON CORPORATION — Liquidity and Capital Resources of this Form
10-K.

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of PECO’s contractual  obligations, commercial commitments and off-balance  sheet arrangements  is set forth under Contractual Obligations and
Off-Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K. 

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of PECO’s critical accounting policies and estimates.

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

PECO

PECO  is  exposed  to  market  risks  associated  with  credit  and  interest  rates.  These  risks  are  described  above  under  Quantitative  and  Qualitative  Disclosures
about Market Risk—Exelon.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

BGE

General

BGE operates in a single business segment and its operations consist of the purchase and regulated retail sale of electricity and the provision of distribution and
transmission  services  in  central  Maryland,  including  the  City  of  Baltimore,  and  the  purchase  and  regulated  retail  sale  of  natural  gas  and  the  provision  of
distribution service in central Maryland, including the City of Baltimore. This segment is discussed in further detail in ITEM 1. BUSINESS—BGE of this Form 10-
K.

Executive Overview

A discussion of items pertinent to BGE’s executive overview is set forth under EXELON CORPORATION — Executive Overview of this Form 10-K.

Results of Operations

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 and Year Ended December 31, 2017 Compared to Year Ended
December 31, 2016

A  discussion  of  BGE’s  results  of  operations  for  2018 compared  to  2017 and  for  2017 compared  to  2016 is  set  forth  under  Results  of  Operations—BGE  in
EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

BGE’s  business  is  capital  intensive  and  requires  considerable  capital  resources.  BGE’s  capital  resources  are  primarily  provided  by  internally  generated  cash
flows from operations and, to the extent necessary, external financing, including the issuance of long-term debt or commercial paper. BGE’s access to external
financing  at  reasonable  terms  is  dependent  on  its  credit  ratings  and  general  business  conditions,  as  well  as  that  of  the  utility  industry  in  general.  If  these
conditions  deteriorate  to  where  BGE  no  longer  has  access  to  the  capital  markets  at  reasonable  terms,  BGE  has  access  to  a  revolving  credit  facility.  At
December 31, 2018 , BGE had access to a revolving credit facility with aggregate bank commitments of $600 million .

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital resources are used primarily to fund BGE’s capital requirements, including construction expenditures, retire debt, pay dividends, fund pension and other
postretirement benefit obligations and invest in new and existing ventures. BGE spends a significant amount of cash on capital improvements and construction
projects that have a long-term return on investment. Additionally, BGE operates in a rate-regulated environment in which the amount of new investment recovery
may be limited and where such recovery takes place over an extended period of time.

Cash Flows from Operating Activities

A discussion of items pertinent to BGE’s cash flows from operating activities is set forth under Cash Flows from Operating Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A  discussion  of  items  pertinent  to  BGE’s  cash  flows  from  investing  activities  is  set  forth  under  “Cash  Flows  from  Investing  Activities”  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Financing Activities

A  discussion  of  items  pertinent  to  BGE’s  cash  flows  from  financing  activities  is  set  forth  under  “Cash  Flows  from  Financing  Activities”  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

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Credit Matters

A discussion of credit matters pertinent to BGE is set forth under Credit Matters in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-
K. 

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of BGE’s contractual obligations, commercial commitments and off-balance sheet arrangements is set forth under Contractual Obligations and Off-
Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K. 

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of BGE’s critical accounting policies and estimates. 

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

BGE

BGE is exposed to market risks associated with credit and interest rates. These risks are described above under Quantitative and Qualitative Disclosures about
Market Risk—Exelon.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

PHI

General

PHI  has  three  reportable  segments  Pepco,  DPL,  and  ACE.  Its  operations  consist  of  the  purchase  and  regulated  retail  sale  of  electricity  and  the  provision  of
distribution  and  transmission  services,  and  to  a  lesser  extent,  the  purchase  and  regulated  retail  sale  and  supply  of  natural  gas  in  Delaware.  This  segment  is
discussed in further detail in ITEM 1. BUSINESS — PHI of this Form 10-K.

Executive Overview

A discussion of items pertinent to PHI’s executive overview is set forth under EXELON CORPORATION — Executive Overview of this Form 10-K.

Results of Operations

Successor Period Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 , Successor Period of March 24, 2016 to
December 31, 2016 and Predecessor Period of January 1, 2016 to March 23, 2016

A discussion of PHI’s results of operations for 2018 compared to 2017 , March 24, 2016 to December 31, 2016 and January 1, 2016 to March 23, 2016 is set
forth under Results of Operations—PHI in EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

PHI’s business is capital intensive and requires considerable capital resources. PHI’s capital resources are primarily provided by internally generated cash flows
from  operations  and,  to  the  extent  necessary,  external  financing,  including  the  issuance  of  long-term  debt  or  commercial  paper,  borrowings  from  the  Exelon
money pool or capital contributions from Exelon. PHI’s access to external financing at reasonable terms is dependent on its credit ratings and general business
conditions, as well as that of the utility industry in general.

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital resources are used primarily to fund PHI’s capital requirements, including construction expenditures, retire debt, pay dividends, fund pension and other
postretirement benefit obligations and invest in new and existing ventures. PHI spends a significant amount of cash on capital improvements and construction
projects that have a long-term return on investment.

Cash Flows from Operating Activities

A discussion of items pertinent to PHI’s cash flows from operating activities is set forth under Cash Flows from Operating Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A discussion of items pertinent to PHI’s cash flows from investing activities is set forth under “Cash Flows from Investing Activities” in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Financing Activities

A discussion of items pertinent to PHI’s cash flows from financing activities is set forth under “Cash Flows from Financing Activities” in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

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Credit Matters

A discussion of credit matters pertinent to PHI is set forth under Credit Matters in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-
K. 

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of PHI’s contractual obligations, commercial commitments and off-balance sheet arrangements is set forth under Contractual Obligations and Off-
Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of PHI’s critical accounting policies and estimates.

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

PHI

PHI is exposed to market risks associated with commodity price, credit and interest rates. These risks are described above under Quantitative and Qualitative
Disclosures about Market Risk — Exelon.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Pepco

General

Pepco operates in a single business segment and its operations consist of the purchase and regulated retail sale of electricity and the provision of distribution
and transmission services to retail customers in District of Columbia and major portions of Prince George’s County and Montgomery County in Maryland. This
segment is discussed in further detail in ITEM 1. BUSINESS — Pepco of this Form 10-K.

Executive Overview

A discussion of items pertinent to Pepco’s executive overview is set forth under EXELON CORPORATION — Executive Overview of this Form 10-K. 

Results of Operations

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 and Year Ended December 31, 2017 Compared to Year Ended
December 31, 2016

A discussion of Pepco’s results of operations for 2018 compared to 2017 and for 2017 compared to 2016 is set forth under Results of Operations—Pepco in
EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

Pepco’s business is capital intensive and requires considerable capital resources. Pepco’s capital resources are primarily provided by internally generated cash
flows from operations and, to the extent necessary, external financing, including the issuance of long-term debt, commercial paper or credit facility borrowings.
Pepco’s access to external financing at reasonable terms is dependent on its credit ratings and general business conditions, as well as that of the utility industry
in general. At December 31, 2018 , Pepco had access to a revolving credit facility with aggregate bank commitments of $300 million .

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital  resources  are  used  primarily  to  fund  Pepco’s  capital  requirements,  including  construction  expenditures,  retire  debt,  pay  dividends,  fund  pension  and
other  postretirement  benefit  obligations  and  invest  in  new  and  existing  ventures.  Pepco  spends  a  significant  amount  of  cash  on  capital  improvements  and
construction  projects  that  have  a  long-term  return  on  investment.  Additionally,  Pepco  operates  in  rate-regulated  environments  in  which  the  amount  of  new
investment recovery may be limited and where such recovery takes place over an extended period of time. 

Cash Flows from Operating Activities

A  discussion  of  items  pertinent  to  Pepco’s  cash  flows  from  operating  activities  is  set  forth  under  Cash  Flows  from  Operating  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A  discussion  of  items  pertinent  to  Pepco’s  cash  flows  from  investing  activities  is  set  forth  under  Cash  Flows  from  Investing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Financing Activities

A  discussion  of  items  pertinent  to  Pepco’s  cash  flows  from  financing  activities  is  set  forth  under  Cash  Flows  from  Financing  Activities  in  EXELON
CORPORATION — Liquidity and Capital Resources of this Form 10-K.

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Credit Matters

A discussion of credit matters pertinent to Pepco is set forth under Credit Matters in EXELON CORPORATION — Liquidity and Capital Resources of this Form
10-K. 

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of Pepco’s contractual  obligations, commercial commitments and off-balance  sheet arrangements  is set forth under Contractual Obligations and
Off-Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K. 

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of Pepco’s critical accounting policies and estimates.

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Pepco

Pepco  is  exposed  to  market  risks  associated  with  credit  and  interest  rates.  These  risks  are  described  above  under  Quantitative  and  Qualitative  Disclosures
about Market Risk— Exelon.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

DPL

General

DPL operates in a single business segment and its operations consist of the purchase and regulated retail sale of electricity and the provision of distribution and
transmission  services  in  portions  of  Maryland  and  Delaware,  and  the  purchase  and  regulated  retail  sale  and  supply  of  natural  gas  in  New  Castle  County,
Delaware. This segment is discussed in further detail in ITEM 1. BUSINESS — DPL of this Form 10-K.

Executive Overview

A discussion of items pertinent to DPL’s executive overview is set forth under EXELON CORPORATION — Executive Overview of this Form 10-K.

Results of Operations

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 and Year Ended December 31, 2017 Compared to Year Ended
December 31, 2016

A  discussion  of  DPL’s  results  of  operations  for  2018 compared  to  2017 and  for  2017 compared  to  2016 is  set  forth  under  Results  of  Operations—DPL  in
EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

DPL’s  business  is  capital  intensive  and  requires  considerable  capital  resources.  DPL’s  capital  resources  are  primarily  provided  by  internally  generated  cash
flows from operations and, to the extent necessary, external financing, including the issuance of long-term debt or commercial paper. DPL’s access to external
financing  at  reasonable  terms  is  dependent  on  its  credit  ratings  and  general  business  conditions,  as  well  as  that  of  the  utility  industry  in  general.  If  these
conditions  deteriorate  to  where  DPL  no  longer  has  access  to  the  capital  markets  at  reasonable  terms,  DPL  has  access  to  a  revolving  credit  facility.  At
December 31, 2018 , DPL had access to a revolving credit facility with aggregate bank commitments of $300 million .

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital resources are used primarily to fund DPL’s capital requirements, including construction expenditures, retire debt, pay dividends, fund pension and other
postretirement benefit obligations and invest in new and existing ventures. DPL spends a significant amount of cash on capital improvements and construction
projects that have a long-term return on investment. Additionally, DPL operates in a rate-regulated environment in which the amount of new investment recovery
may be limited and where such recovery takes place over an extended period of time. 

Cash Flows from Operating Activities

A discussion of items pertinent to DPL’s cash flows from operating activities is set forth under Cash Flows from Operating Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A discussion of items pertinent to DPL’s cash flows from investing activities is set forth under Cash Flows from Investing Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Financing Activities

A discussion of items pertinent to DPL’s cash flows from financing activities is set forth under Cash Flows from Financing Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

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Credit Matters

A discussion of credit matters pertinent to DPL is set forth under Credit Matters in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-
K. 

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of DPL’s contractual obligations, commercial commitments and off-balance sheet arrangements is set forth under Contractual Obligations and Off-
Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of DPL’s critical accounting policies and estimates.

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

DPL

DPL is exposed to market risks associated with commodity price, credit and interest rates. These risks are described above under Quantitative and Qualitative
Disclosures about Market Risk—Exelon.

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ITEM 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

ACE

General

ACE operates in a single business segment and its operations consist of the purchase and regulated retail sale of electricity and the provision of distribution and
transmission services to retail customers in portions of southern New Jersey. This segment is discussed in further detail in ITEM 1. BUSINESS — ACE of this
Form 10-K.

Executive Overview

A discussion of items pertinent to ACE’s executive overview is set forth under EXELON CORPORATION — Executive Overview of this Form 10-K.

Results of Operations

Year Ended December 31, 2018 Compared to Year Ended December 31, 2017 and Year Ended December 31, 2017 Compared to Year Ended
December 31, 2016

A  discussion  of  ACE’s  results  of  operations  for  2018 compared  to  2017 and  for  2017 compared  to  2016 is  set  forth  under  Results  of  Operations—ACE  in
EXELON CORPORATION — Results of Operations of this Form 10-K.

Liquidity and Capital Resources

ACE’s  business  is  capital  intensive  and  requires  considerable  capital  resources.  ACE’s  capital  resources  are  primarily  provided  by  internally  generated  cash
flows from operations and, to the extent necessary, external financing, including the issuance of long-term debt, commercial paper or credit facility borrowings.
ACE’s access to external financing at reasonable terms is dependent on its credit ratings and general business conditions, as well as that of the utility industry in
general. At December 31, 2018 , ACE had access to a revolving credit facility with aggregate bank commitments of $300 million .

See  EXELON  CORPORATION  —  Liquidity  and  Capital  Resources  and  Note  13  —  Debt  and  Credit  Agreements  of  the  Combined  Notes  to  Consolidated
Financial Statements of this Form 10-K for additional information.

Capital resources are used primarily to fund ACE’s capital requirements, including construction expenditures, retire debt, pay dividends, fund pension and other
postretirement benefit obligations and invest in new and existing ventures. ACE spends a significant amount of cash on capital improvements and construction
projects that have a long-term return on investment. Additionally, ACE operates in rate-regulated environments in which the amount of new investment recovery
may be limited and where such recovery takes place over an extended period of time.

Cash Flows from Operating Activities

A discussion of items pertinent to ACE’s cash flows from operating activities is set forth under Cash Flows from Operating Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Investing Activities

A discussion of items pertinent to ACE’s cash flows from investing activities is set forth under Cash Flows from Investing Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

Cash Flows from Financing Activities

A discussion of items pertinent to ACE’s cash flows from financing activities is set forth under Cash Flows from Financing Activities in EXELON CORPORATION
— Liquidity and Capital Resources of this Form 10-K.

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Credit Matters

A discussion of credit matters pertinent to ACE is set forth under Credit Matters in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-
K.

Contractual Obligations and Off-Balance Sheet Arrangements

A discussion of ACE’s contractual obligations, commercial commitments and off-balance sheet arrangements is set forth under Contractual Obligations and Off-
Balance Sheet Arrangements in EXELON CORPORATION — Liquidity and Capital Resources of this Form 10-K.

Critical Accounting Policies and Estimates

See All Registrants — Critical Accounting Policies and Estimates above for a discussion of ACE’s critical accounting policies and estimates.

New Accounting Pronouncements

See  Note  1  —  Significant  Accounting  Policies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  information  regarding  new  accounting
pronouncements.

ITEM 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

ACE

ACE is exposed to market risks associated with credit and interest rates. These risks are described above under Quantitative and Qualitative Disclosures about
Market Risk— Exelon.

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ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Management’s Report on Internal Control Over Financial Reporting

The management of Exelon Corporation (Exelon) is responsible for establishing and maintaining adequate internal control over financial reporting, as such term
is  defined  in  Exchange  Act  Rule  13a-15(f).  Internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable  assurance  regarding  the
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

Exelon’s management conducted an assessment of the effectiveness of Exelon’s internal control over financial reporting as of December 31, 2018 . In making
this assessment, management used the criteria in Internal Control—Integrated Framework (2013)  issued by the Committee of Sponsoring Organizations of the
Treadway  Commission.  Based  on this  assessment,  Exelon’s management  concluded  that,  as  of  December 31, 2018 ,  Exelon’s  internal  control  over  financial
reporting was effective.

The  effectiveness  of  Exelon’s  internal  control  over  financial  reporting  as  of  December  31,  2018  ,  has  been  audited  by  PricewaterhouseCoopers  LLP,  an
independent registered public accounting firm, as stated in their report which appears herein.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The  management  of  Exelon  Generation  Company,  LLC  (Generation)  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial
reporting,  as  such  term  is  defined  in  Exchange  Act  Rule  13a-15(f).  Internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable
assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted
accounting principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

Generation’s management conducted an assessment of the effectiveness of Generation’s internal control over financial reporting as of December 31, 2018 . In
making this assessment, management used the criteria in Internal Control—Integrated Framework (2013)  issued by the Committee of Sponsoring Organizations
of the Treadway Commission. Based on this assessment, Generation’s management concluded that, as of December 31, 2018 , Generation’s internal control
over financial reporting was effective.

The  effectiveness  of  Generation’s  internal  control  over  financial  reporting  as  of  December  31,  2018  ,  has  been  audited  by  PricewaterhouseCoopers  LLP,  an
independent registered public accounting firm, as stated in their report which appears herein.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The management of Commonwealth Edison Company (ComEd) is responsible for establishing and maintaining adequate internal control over financial reporting,
as  such  term  is  defined  in  Exchange  Act  Rule  13a-15(f).  Internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable  assurance
regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

ComEd’s management conducted an assessment of the effectiveness of ComEd’s internal control over financial reporting as of December 31, 2018 . In making
this assessment, management used the criteria in Internal Control—Integrated Framework (2013)  issued by the Committee of Sponsoring Organizations of the
Treadway Commission. Based on this assessment, ComEd’s management concluded that, as of December 31, 2018 , ComEd’s internal control over financial
reporting was effective.

The  effectiveness  of  ComEd’s  internal  control  over  financial  reporting  as  of  December  31,  2018  ,  has  been  audited  by  PricewaterhouseCoopers  LLP,  an
independent registered public accounting firm, as stated in their report which appears herein.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The management of PECO Energy Company (PECO) is responsible for establishing and maintaining adequate internal control over financial reporting, as such
term is defined in Exchange Act Rule 13a-15(f). Internal control over financial reporting is a process designed to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

PECO’s management conducted an assessment of the effectiveness of PECO’s internal control over financial reporting as of December 31, 2018 . In making
this assessment, management used the criteria in Internal Control—Integrated Framework (2013)  issued by the Committee of Sponsoring Organizations of the
Treadway  Commission.  Based  on  this  assessment,  PECO’s  management  concluded  that,  as  of  December  31,  2018  ,  PECO’s  internal  control  over  financial
reporting was effective.

The  effectiveness  of  PECO’s  internal  control  over  financial  reporting  as  of  December  31,  2018  ,  has  been  audited  by  PricewaterhouseCoopers  LLP,  an
independent registered public accounting firm, as stated in their report which appears herein.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The  management  of  Baltimore  Gas  and  Electric  Company  (BGE)  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial
reporting,  as  such  term  is  defined  in  Exchange  Act  Rule  13a-15(f).  Internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable
assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted
accounting principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

BGE’s management conducted an assessment of the effectiveness of BGE’s internal control over financial reporting as of December 31, 2018 . In making this
assessment,  management  used  the  criteria  in  Internal  Control—Integrated  Framework  (2013)   issued  by  the  Committee  of  Sponsoring  Organizations  of  the
Treadway  Commission.  Based  on  this  assessment,  BGE’s  management  concluded  that,  as  of  December  31,  2018  ,  BGE’s  internal  control  over  financial
reporting was effective.

The  effectiveness  of  BGE’s  internal  control  over  financial  reporting  as  of  December  31,  2018  ,  has  been  audited  by  PricewaterhouseCoopers  LLP,  an
independent registered public accounting firm, as stated in their report which appears herein.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The management of Pepco Holdings LLC (PHI) is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is
defined in Exchange Act Rule 13a-15(f). Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability
of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

PHI’s management  conducted  an  assessment  of  the  effectiveness  of  PHI’s internal  control  over financial  reporting  as of  December 31, 2018 . In making this
assessment,  management  used  the  criteria  in  Internal  Control—Integrated  Framework  (2013)   issued  by  the  Committee  of  Sponsoring  Organizations  of  the
Treadway Commission. Based on this assessment, PHI’s management concluded that, as of December 31, 2018 , PHI’s internal control over financial reporting
was effective.

The  effectiveness  of  PHI’s  internal  control  over  financial  reporting  as  of  December  31,  2018  ,  has  been  audited  by  PricewaterhouseCoopers  LLP,  an
independent registered public accounting firm, as stated in their report which appears herein.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The management of Potomac Electric Power Company (Pepco) is responsible for establishing and maintaining adequate internal control over financial reporting,
as  such  term  is  defined  in  Exchange  Act  Rule  13a-15(f).  Internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable  assurance
regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

Pepco’s management conducted an assessment of the effectiveness of Pepco’s internal control over financial reporting as of December 31, 2018 . In making
this assessment, management used the criteria in Internal Control—Integrated Framework (2013)  issued by the Committee of Sponsoring Organizations of the
Treadway  Commission.  Based  on  this  assessment,  Pepco’s  management  concluded  that,  as  of  December  31,  2018  ,  Pepco’s  internal  control  over  financial
reporting was effective.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The management of Delmarva Power & Light Company (DPL) is responsible for establishing and maintaining adequate internal control over financial reporting,
as  such  term  is  defined  in  Exchange  Act  Rule  13a-15(f).  Internal  control  over  financial  reporting  is  a  process  designed  to  provide  reasonable  assurance
regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

DPL’s management conducted an assessment of the effectiveness of DPL’s internal control over financial reporting as of December 31, 2018 . In making this
assessment,  management  used  the  criteria  in  Internal  Control—Integrated  Framework  (2013)   issued  by  the  Committee  of  Sponsoring  Organizations  of  the
Treadway Commission. Based on this assessment, DPL’s management concluded that, as of December 31, 2018 , DPL’s internal control over financial reporting
was effective.

February 8, 2019

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Management’s Report on Internal Control Over Financial Reporting

The management of Atlantic City Electric Company (ACE) is responsible for establishing and maintaining adequate internal control over financial reporting, as
such term is defined in Exchange Act Rule 13a-15(f). Internal control over financial reporting is a process designed to provide reasonable assurance regarding
the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

ACE’s management conducted an assessment of the effectiveness of ACE’s internal control over financial reporting as of December 31, 2018 . In making this
assessment,  management  used  the  criteria  in  Internal  Control—Integrated  Framework  (2013)   issued  by  the  Committee  of  Sponsoring  Organizations  of  the
Treadway  Commission.  Based  on  this  assessment,  ACE’s  management  concluded  that,  as  of  December  31,  2018  ,  ACE’s  internal  control  over  financial
reporting was effective.

February 8, 2019

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To the Board of Directors and Shareholders of Exelon Corporation

Opinions on the Financial Statements and Internal Control over Financial Reporting

Report of Independent Registered Public Accounting Firm

We  have  audited  the  consolidated  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(1)(i),  and  the  financial
statement schedules listed in the index appearing under Item 15(a)(1)(ii), of Exelon Corporation and its subsidiaries (the "Company") (collectively referred to as
the  “consolidated  financial  statements”).    We  also  have  audited  the  Company's  internal  control  over  financial  reporting  as  of  December  31,  2018,  based  on
criteria  established  in  Internal  Control  -  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission
(COSO).  

In  our  opinion,  the  consolidated  financial  statements  referred  to  above  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of
December  31,  2018  and  2017  , and  the  results  of  its  operations  and  its  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2018  in
conformity with accounting principles generally accepted in the United States of America.  Also in our opinion, the Company maintained, in all material respects,
effective internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued
by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for
its assessment  of the  effectiveness  of internal  control over financial reporting,  included  in Management’s  Report  on  Internal  Control Over Financial Reporting
appearing under Item 8.  Our responsibility is to express opinions on the Company’s consolidated  financial statements and on the Company's internal control
over financial reporting based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States)
(PCAOB)  and  are  required  to  be  independent  with  respect  to  the  Company  in  accordance  with  the  U.S.  federal  securities  laws  and  the  applicable  rules  and
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal
control over financial reporting was maintained in all material respects.  

Our  audits  of  the  consolidated  financial  statements  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated  financial
statements,  whether  due  to  error  or  fraud,  and  performing  procedures  that  respond  to  those  risks.    Such  procedures  included  examining,  on  a  test  basis,
evidence regarding the amounts and disclosures in the consolidated  financial statements.  Our audits also included evaluating the accounting principles used
and significant estimates made by management, as well as evaluating the overall presentation of the consolidated  financial statements.  Our audit of internal
control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally  accepted  accounting  principles.    A  company’s  internal  control  over
financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in
accordance with authorizations of management and directors of the company; and (iii) provide reasonable

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assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.    Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Chicago, Illinois
February 8, 2019

We have served as the Company’s auditor since 2000.  

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To the Board of Directors and Member of Exelon Generation Company, LLC

Opinions on the Financial Statements and Internal Control over Financial Reporting

Report of Independent Registered Public Accounting Firm

We  have  audited  the  consolidated  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(2)(i),  and  the  financial
statement schedule listed in the index appearing under Item 15(a)(2)(ii), of Exelon Generation Company, LLC and its subsidiaries (the "Company") (collectively
referred to as the “consolidated financial statements”).   We also have audited the Company's internal control over financial reporting as of December 31, 2018,
based  on  criteria  established  in  Internal  Control  -  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway
Commission (COSO).  

In  our  opinion,  the  consolidated  financial  statements  referred  to  above  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of
December  31,  2018  and  2017  , and  the  results  of  its  operations  and  its  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2018  in
conformity with accounting principles generally accepted in the United States of America.  Also in our opinion, the Company maintained, in all material respects,
effective internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued
by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for
its assessment  of the  effectiveness  of internal  control over financial reporting,  included  in Management’s  Report  on  Internal  Control Over Financial Reporting
appearing under Item 8.  Our responsibility is to express opinions on the Company’s consolidated  financial statements and on the Company's internal control
over financial reporting based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States)
(PCAOB)  and  are  required  to  be  independent  with  respect  to  the  Company  in  accordance  with  the  U.S.  federal  securities  laws  and  the  applicable  rules  and
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal
control over financial reporting was maintained in all material respects.  

Our  audits  of  the  consolidated  financial  statements  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated  financial
statements,  whether  due  to  error  or  fraud,  and  performing  procedures  that  respond  to  those  risks.    Such  procedures  included  examining,  on  a  test  basis,
evidence regarding the amounts and disclosures in the consolidated  financial statements.  Our audits also included evaluating the accounting principles used
and significant estimates made by management, as well as evaluating the overall presentation of the consolidated  financial statements.  Our audit of internal
control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally  accepted  accounting  principles.    A  company’s  internal  control  over
financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in
accordance with authorizations of management and directors of the company; and (iii) provide reasonable

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assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.    Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Baltimore, Maryland
February 8, 2019

We have served as the Company’s auditor since 2001.  

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To the Board of Directors and Shareholders of Commonwealth Edison Company

Opinions on the Financial Statements and Internal Control over Financial Reporting

Report of Independent Registered Public Accounting Firm

We  have  audited  the  consolidated  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(3)(i),  and  the  financial
statement schedule listed in the index appearing under Item 15(a)(3)(ii), of Commonwealth Edison Company and its subsidiaries (the "Company") (collectively
referred to as the “consolidated financial statements”).   We also have audited the Company's internal control over financial reporting as of December 31, 2018,
based  on  criteria  established  in  Internal  Control  -  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway
Commission (COSO).  

In  our  opinion,  the  consolidated  financial  statements  referred  to  above  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of
December  31,  2018  and  2017  , and  the  results  of  its  operations  and  its  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2018  in
conformity with accounting principles generally accepted in the United States of America.  Also in our opinion, the Company maintained, in all material respects,
effective internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued
by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for
its assessment  of the  effectiveness  of internal  control over financial reporting,  included  in Management’s  Report  on  Internal  Control Over Financial Reporting
appearing under Item 8.  Our responsibility is to express opinions on the Company’s consolidated  financial statements and on the Company's internal control
over financial reporting based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States)
(PCAOB)  and  are  required  to  be  independent  with  respect  to  the  Company  in  accordance  with  the  U.S.  federal  securities  laws  and  the  applicable  rules  and
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal
control over financial reporting was maintained in all material respects.  

Our  audits  of  the  consolidated  financial  statements  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated  financial
statements,  whether  due  to  error  or  fraud,  and  performing  procedures  that  respond  to  those  risks.    Such  procedures  included  examining,  on  a  test  basis,
evidence regarding the amounts and disclosures in the consolidated  financial statements.  Our audits also included evaluating the accounting principles used
and significant estimates made by management, as well as evaluating the overall presentation of the consolidated  financial statements.  Our audit of internal
control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally  accepted  accounting  principles.    A  company’s  internal  control  over
financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in
accordance with authorizations of management and directors of the company; and (iii) provide reasonable

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assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.    Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Chicago, Illinois
February 8, 2019

We have served as the Company’s auditor since 2000.  

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To the Board of Directors and Shareholder of PECO Energy Company

Opinions on the Financial Statements and Internal Control over Financial Reporting

Report of Independent Registered Public Accounting Firm

We  have  audited  the  consolidated  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(4)(i),  and  the  financial
statement schedule listed in the index appearing under Item 15(a)(4)(ii), of PECO Energy Company and its subsidiaries (the "Company") (collectively referred to
as the “consolidated financial statements”).   We also have audited the Company's internal control over financial reporting as of December 31, 2018, based on
criteria  established  in  Internal  Control  -  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission
(COSO).  

In  our  opinion,  the  consolidated  financial  statements  referred  to  above  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of
December  31,  2018  and  2017  , and  the  results  of  its  operations  and  its  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2018  in
conformity with accounting principles generally accepted in the United States of America.  Also in our opinion, the Company maintained, in all material respects,
effective internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued
by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for
its assessment  of the  effectiveness  of internal  control over financial reporting,  included  in Management’s  Report  on  Internal  Control Over Financial Reporting
appearing under Item 8.  Our responsibility is to express opinions on the Company’s consolidated  financial statements and on the Company's internal control
over financial reporting based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States)
(PCAOB)  and  are  required  to  be  independent  with  respect  to  the  Company  in  accordance  with  the  U.S.  federal  securities  laws  and  the  applicable  rules  and
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal
control over financial reporting was maintained in all material respects.  

Our  audits  of  the  consolidated  financial  statements  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated  financial
statements,  whether  due  to  error  or  fraud,  and  performing  procedures  that  respond  to  those  risks.    Such  procedures  included  examining,  on  a  test  basis,
evidence regarding the amounts and disclosures in the consolidated  financial statements.  Our audits also included evaluating the accounting principles used
and significant estimates made by management, as well as evaluating the overall presentation of the consolidated  financial statements.  Our audit of internal
control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally  accepted  accounting  principles.    A  company’s  internal  control  over
financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in
accordance with authorizations of management and directors of the company; and (iii) provide reasonable

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assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.    Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Philadelphia, Pennsylvania
February 8, 2019

We have served as the Company’s auditor since 1932.

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To the Board of Directors and Shareholder of Baltimore Gas and Electric Company

Opinions on the Financial Statements and Internal Control over Financial Reporting

Report of Independent Registered Public Accounting Firm

We  have  audited  the  consolidated  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(5)(i),  and  the  financial
statement  schedule  listed  in  the  index  appearing  under  Item  15(a)(5)(ii),  of  Baltimore  Gas  and  Electric  Company  and  its  subsidiaries  (the  "Company")
(collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of December
31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway
Commission (COSO).  

In  our  opinion,  the  consolidated  financial  statements  referred  to  above  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of
December  31,  2018  and  2017  , and  the  results  of  its  operations  and  its  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2018  in
conformity with accounting principles generally accepted in the United States of America.  Also in our opinion, the Company maintained, in all material respects,
effective internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued
by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for
its assessment  of the  effectiveness  of internal  control over financial reporting,  included  in Management’s  Report  on  Internal  Control Over Financial Reporting
appearing  under Item  8. Our responsibility is to express opinions  on the  Company’s consolidated  financial statements  and  on the  Company's internal  control
over financial reporting based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States)
(PCAOB)  and  are  required  to  be  independent  with  respect  to  the  Company  in  accordance  with  the  U.S.  federal  securities  laws  and  the  applicable  rules  and
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal
control over financial reporting was maintained in all material respects.  

Our  audits  of  the  consolidated  financial  statements  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated  financial
statements,  whether  due  to  error  or  fraud,  and  performing  procedures  that  respond  to  those  risks.    Such  procedures  included  examining,  on  a  test  basis,
evidence regarding the amounts and disclosures in the consolidated  financial statements.  Our audits also included evaluating the accounting principles used
and significant estimates made by management, as well as evaluating the overall presentation of the consolidated  financial statements.  Our audit of internal
control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally  accepted  accounting  principles.    A  company’s  internal  control  over
financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in
accordance with authorizations of management and directors of the company; and (iii) provide reasonable

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assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.    Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Baltimore, Maryland
February 8, 2019

We have served as the Company’s auditor since at least 1993. We have not been able to determine the specific year we began serving as auditor of the
Company.  

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To the Board of Directors and Member of Pepco Holdings LLC

Opinions on the Financial Statements and Internal Control over Financial Reporting

Report of Independent Registered Public Accounting Firm

We  have  audited  the  consolidated  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(6)(i),  and  the  financial
statement schedule listed in the index appearing under Item 15(a)(6)(iii), of Pepco Holdings LLC and its subsidiaries (Successor) (the "Company") (collectively
referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of December 31, 2018,
based  on  criteria  established  in  Internal  Control  -  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway
Commission (COSO).  

In  our  opinion,  the  consolidated  financial  statements  referred  to  above  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of
December 31, 2018 and 2017 , and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2018 and for the
period  from  March  24,  2016  to  December  31,  2016  in  conformity  with  accounting  principles  generally  accepted  in  the  United  States  of  America.    Also  in  our
opinion,  the  Company  maintained,  in  all  material  respects,  effective  internal  control  over  financial  reporting  as  of  December  31,  2018,  based  on  criteria
established in Internal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for
its assessment  of the  effectiveness  of internal  control over financial reporting,  included  in Management’s  Report  on  Internal  Control Over Financial Reporting
appearing under Item 8.  Our responsibility is to express opinions on the Company’s consolidated  financial statements and on the Company's internal control
over financial reporting based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States)
(PCAOB)  and  are  required  to  be  independent  with  respect  to  the  Company  in  accordance  with  the  U.S.  federal  securities  laws  and  the  applicable  rules  and
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal
control over financial reporting was maintained in all material respects.  

Our  audits  of  the  consolidated  financial  statements  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated  financial
statements,  whether  due  to  error  or  fraud,  and  performing  procedures  that  respond  to  those  risks.    Such  procedures  included  examining,  on  a  test  basis,
evidence regarding the amounts and disclosures in the consolidated  financial statements.  Our audits also included evaluating the accounting principles used
and significant estimates made by management, as well as evaluating the overall presentation of the consolidated  financial statements.  Our audit of internal
control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation  of  financial  statements  for  external  purposes  in  accordance  with  generally  accepted  accounting  principles.    A  company’s  internal  control  over
financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation
of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in
accordance with authorizations of management and directors of the company; and (iii) provide reasonable

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assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.    Also,  projections  of  any  evaluation  of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance
with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Washington, DC
February 8, 2019

We have served as the Company’s auditor since 2001.  

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To the Board of Directors and Member of Pepco Holdings LLC

Report of Independent Registered Public Accounting Firm

In  our  opinion,  the  consolidated  financial  statements  listed  in  the  index  appearing  under  Item  15(a)(6)(ii)  present  fairly,  in  all  material  respects,  the  results  of
operations and cash flows of Pepco Holdings LLC and its subsidiaries (formerly Pepco Holdings, Inc.) (Predecessor) for the period January 1, 2016 to March 23,
2016 in conformity with accounting principles generally accepted in the United States of America.  In addition, in our opinion, the financial statement schedule for
the period January 1, 2016 to March 23, 2016 listed in the index appearing under Item 15(a)(6)(iv) presents fairly, in all material respects, the information set
forth therein when read in conjunction with the related consolidated financial statements. These financial statements and financial statement schedule are the
responsibility of the Company's management.  Our responsibility is to express an opinion on these financial statements and financial statement schedule based
on  our  audit.    We  conducted  our  audit  of  these  financial  statements  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board
(United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of
material misstatement.  An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing
the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation.  We believe that our
audit provides a reasonable basis for our opinion.

/s/ PricewaterhouseCoopers LLP
Washington, DC
February 13, 2017

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To the Board of Directors and Shareholder of Potomac Electric Power Company

Opinion on the Financial Statements

Report of Independent Registered Public Accounting Firm

We  have  audited  the  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(7)(i),  and  the  financial  statement
schedule  listed  in  the  index  appearing  under  Item  15(a)(7)(ii),  of  Potomac  Electric  Power  Company  (the  "Company")  (collectively  referred  to  as  the  “financial
statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2018 and
2017,  and  the  results  of  its  operations  and  its  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2018  in  conformity  with  accounting
principles generally accepted in the United States of America.  

Basis for Opinion

These  financial  statements  are  the  responsibility  of  the  Company’s  management.    Our  responsibility  is  to  express  an  opinion  on  the  Company’s  financial
statements based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and
are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the
Securities and Exchange Commission and the PCAOB.

We conducted our audits of these financial statements in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.  The Company is
not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an
understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control
over financial reporting.  Accordingly, we express no such opinion.

Our  audits  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  financial  statements,  whether  due  to  error  or  fraud,  and
performing procedures that respond to those risks.  Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in
the  financial  statements.    Our  audits  also  included  evaluating  the  accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as
evaluating the overall presentation of the financial statements.  We believe that our audits provide a reasonable basis for our opinion.

/s/ PricewaterhouseCoopers LLP
Washington, DC
February 8, 2019

We have served as the Company's auditor since at least 1993. We have not been able to determine the specific year we began serving as auditor of the
Company.

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To the Board of Directors and Shareholder of Delmarva Power & Light Company

Opinion on the Financial Statements

Report of Independent Registered Public Accounting Firm

We  have  audited  the  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(8)(i),  and  the  financial  statement
schedule listed in the index appearing  under  Item 15(a)(8)(ii), of Delmarva Power & Light Company (the  "Company") (collectively referred to as the “financial
statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2018 and
2017,  and  the  results  of  its  operations  and  its  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2018  in  conformity  with  accounting
principles generally accepted in the United States of America.  

Basis for Opinion

These  financial  statements  are  the  responsibility  of  the  Company’s  management.    Our  responsibility  is  to  express  an  opinion  on  the  Company’s  financial
statements based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and
are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the
Securities and Exchange Commission and the PCAOB.

We conducted our audits of these financial statements in accordance with the standards of the PCAOB.  Those standards require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.  The Company is
not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an
understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control
over financial reporting.  Accordingly, we express no such opinion.

Our  audits  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  financial  statements,  whether  due  to  error  or  fraud,  and
performing procedures that respond to those risks.  Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in
the  financial  statements.    Our  audits  also  included  evaluating  the  accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as
evaluating the overall presentation of the financial statements.  We believe that our audits provide a reasonable basis for our opinion.

/s/ PricewaterhouseCoopers LLP
Washington, DC
February 8, 2019

We have served as the Company's auditor since at least 1993. We have not been able to determine the specific year we began serving as auditor of the
Company.

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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholder of Atlantic City Electric Company

Opinion on the Financial Statements

We  have  audited  the  consolidated  financial  statements,  including  the  related  notes,  as  listed  in  the  index  appearing  under  Item  15(a)(9)(i),  and  the  financial
statement  schedule  listed  in  the  index  appearing  under  Item  15(a)(9)(ii),  of  Atlantic  City  Electric  Company  and  its  subsidiary  (the  "Company")  (collectively
referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial
position of the Company as of December 31, 2018 and 2017, and the results of its operations and its cash flows for each of the three years in the period ended
December 31, 2018 in conformity with accounting principles generally accepted in the United States of America.  

Basis for Opinion

These consolidated financial statements  are the responsibility of the Company’s management.   Our responsibility is to express an opinion on the Company’s
consolidated financial statements based on our audits.  We are a public accounting firm registered with the Public Company Accounting Oversight Board (United
States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules
and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits of these consolidated financial statements in accordance with the standards of the PCAOB.  Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or
fraud.  The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we
are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the
Company's internal control over financial reporting.  Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud,
and performing procedures that respond to those risks.  Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures
in the consolidated financial statements.  Our audits also included evaluating the accounting principles used and significant estimates made by management, as
well as evaluating the overall presentation of the consolidated financial statements.  We believe that our audits provide a reasonable basis for our opinion.

/s/ PricewaterhouseCoopers LLP
Washington, DC
February 8, 2019

We have served as the Company's auditor since 1998.

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Exelon Corporation and Subsidiary Companies
Consolidated Statements of Operations and Comprehensive Incom e

(In millions, except per share data)

Operating revenues

Competitive businesses revenues

Rate-regulated utility revenues

Revenues from alternative revenue programs

Total operating revenues

Operating expenses

Competitive businesses purchased power and fuel

Rate-regulated utility purchased power and fuel

Operating and maintenance

Depreciation and amortization

Taxes other than income

     Total operating expenses

Gain (loss) on sales of assets and businesses

Bargain purchase gain

Gain on deconsolidation of business

Operating income

Other income and (deductions)

Interest expense, net

Interest expense to affiliates

Other, net

      Total other income and (deductions)

Income before income taxes

Income taxes

Equity in losses of unconsolidated affiliates

Net income

Net income attributable to noncontrolling interests and preference stock dividends

Net income attributable to common shareholders

Comprehensive income, net of income taxes

Net income

Other comprehensive income (loss), net of income taxes

Pension and non-pension postretirement benefit plans:

Prior service benefit reclassified to periodic benefit cost

Actuarial loss reclassified to periodic benefit cost

Pension and non-pension postretirement benefit plan valuation adjustment

Unrealized gain on cash flow hedges

Unrealized gain on marketable securities

Unrealized gain (loss) on investments in unconsolidated affiliates

Unrealized (loss) gain on foreign currency translation

Other comprehensive income (loss)

Comprehensive income

Comprehensive income attributable to noncontrolling interests and preference stock dividends

Comprehensive income attributable to common shareholders

Average shares of common stock outstanding:

Basic

Diluted

Earnings per average common share:

Basic

Diluted

See the Combined Notes to Consolidated Financial Statements

For the Years Ended December 31,

2018

2017

2016

19,168   $
16,879  

(62)
35,985  

17,394   $
15,964  
207  
33,565  

11,679  
4,991  
9,337  
4,353  
1,783  
32,143

56  
—  
—  

9,668  
4,367  
10,025  
3,828  
1,731  
29,619

3  
233  
213  

16,330

14,988

48

31,366

8,817

3,823

9,954

3,936

1,576

28,106

(48)

—

—

3,898

4,395

3,212

(1,529)

(1,524)

(1,495)

(25)

(112)

(1,666)
2,232  
120  

(28)

2,084

74  

(36)
947  
(613)
3,782  

(126)

(32)

3,876

90  

2,010

$

3,786

$

(41)

297

(1,239)

1,973

753

(24)

1,196

75

1,121

2,084   $

3,876   $

1,196

(66)
247  

(143)

12  
—  
2  

(10)

42

2,126

75  
2,051   $

(56)
197  
10  
3  
6  
4  
7  

171

4,047

88  

(48)

184

(181)

2

1

(4)

10

(36)

1,160

75

3,959

$

1,085

967  
969  

947  
949  

2.08   $

2.07

$

4.00   $
3.99   $

924

927

1.21

1.21

$

$

$

$

$

$

 
 
 
 
   
   
 
 
   
   
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
   
   
 
 
 
 
 
 
   
   
 
   
   
 
   
   
212

Table of Contents

(In millions)
Cash flows from operating activities

Net income

Exelon Corporation and Subsidiary Companies
Consolidated Statements of Cash Flows

For the Years Ended December 31,

2018

2017

2016

$

2,084   $

3,876   $

1,196

Adjustments to reconcile net income to net cash flows provided by operating activities:

Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization

Impairment losses of long-lived assets, intangibles and regulatory assets

Gain on deconsolidation of business 

(Gain) loss on sales of assets and businesses

Bargain purchase gain

Deferred income taxes and amortization of investment tax credits

Net fair value changes related to derivatives

Net realized and unrealized losses (gains) on NDT funds

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Inventories

Accounts payable and accrued expenses

Option premiums (paid) received, net

Collateral received (posted), net

Income taxes

Pension and non-pension postretirement benefit contributions

Deposit with IRS

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Proceeds from termination of direct financing lease investment

Proceeds from NDT fund sales

Investment in NDT funds

Reduction of restricted cash from deconsolidation of business

Acquisitions of assets and businesses, net

Proceeds from sales of assets and businesses

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Changes in short-term borrowings

Proceeds from short-term borrowings with maturities greater than 90 days

Repayments on short-term borrowings with maturities greater than 90 days

Issuance of long-term debt

Retirement of long-term debt

Retirement of long-term debt to financing trust

Common stock issued from treasury stock

Redemption of preference stock

Dividends paid on common stock

Proceeds from employee stock plans

Sale of noncontrolling interests

Other financing activities

Net cash flows (used in) provided by financing activities

Increase (decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

Cash, cash equivalents and restricted cash at end of period

$

5,971  
50  
—  

(56)
—  

(106)
294  
303  
1,124  

(565)

(37)
551  

(43)
82  
340  

(383)

—  

(965)

8,644

(7,594)

—  
8,762  

(8,997)

—  

(154)

91  
58  

(7,834)

(338)
126  

(1)
3,115  

(1,786)

—  

—  
—  

(1,332)

105  
—  

(108)

(219)
591  
1,190  
1,781

5,427  
573  

(213)

(3)

(233)

(362)
151  

(616)
721  

(470)

(72)

(388)

28  

(158)
299  

(405)

—  

(675)

7,480

(7,584)

—  
7,845  

(8,113)

(87)

(208)
219  

(43)

(7,971)

(261)
621  

(700)
3,470  

(2,490)

(250)

1,150  
—  

(1,236)

150  
396  

(83)

767
276  
914  

$

1,190

$

5,576

306

—

48

—

656

24

(229)

1,333

(432)

7

771

(66)

931

576

(397)

(1,250)

(589)

8,461

(8,553)

360

9,496

(9,738)

—

(6,923)

61

(153)

(15,450)

(353)

240

(462)

4,716

(1,936)

—

—

(190)

(1,166)

55

372

(85)

1,191

(5,798)

6,712

914

 
 
 
 
   
   
 
   
   
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
See the Combined Notes to Consolidated Financial Statements

213

Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Mark-to-market derivative assets

Unamortized energy contract assets

Inventories, net

Fossil fuel and emission allowances

Materials and supplies

Regulatory assets

Assets held for sale

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Nuclear decommissioning trust funds

Investments

Goodwill

Mark-to-market derivative assets

Unamortized energy contract assets

Other

Total deferred debits and other assets

Total assets (a)

E xelon Corporation and Subsidiary Companies
Consolidated Balance Sheets

ASSETS

December 31,

2018

2017

$

1,349   $

247  

4,607  

1,256  

804  

48  

334  

1,351  

1,222  

904

1,238  

13,360

76,707  

8,237  

11,661  

625  

6,677  

452  

372  

1,575  

29,599

See the Combined Notes to Consolidated Financial Statements

214

$

119,666

$

898

207

4,445

1,132

976

60

340

1,311

1,267

—

1,260

11,896

74,202

8,021

13,272

640

6,677

337

395

1,330

30,672

116,770

 
 
 
   
 
   
 
   
 
   
 
   
Table of Contents

Exelon Corporation and Subsidiary Companies
Consolidated Balance Sheets

(In millions)

LIABILITIES AND SHAREHOLDERS’ EQUITY

Current liabilities

Short-term borrowings

Long-term debt due within one year

Accounts payable

Accrued expenses

Payables to affiliates

Regulatory liabilities

Mark-to-market derivative liabilities

Unamortized energy contract liabilities

Renewable energy credit obligation

Liabilities held for sale

Other

Total current liabilities

Long-term debt

Long-term debt to financing trusts

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Asset retirement obligations

Pension obligations

Non-pension postretirement benefit obligations

Spent nuclear fuel obligation

Regulatory liabilities

Mark-to-market derivative liabilities

Unamortized energy contract liabilities

Other

Total deferred credits and other liabilities

Total liabilities (a)

Commitments and contingencies

Shareholders’ equity

Common stock (No par value, 2,000 shares authorized, 968 shares and 963 shares outstanding at
December 31, 2018 and 2017, respectively)

Treasury stock, at cost (2 shares at December 31, 2018 and 2017)

Retained earnings

Accumulated other comprehensive loss, net

Total shareholders’ equity

Noncontrolling interests

Total equity

Total liabilities and equity

December 31,

2018

2017

$

714   $

1,349  

3,800  

2,112  

5  

644  

475  

149  

344  

777  

1,035  

11,404

34,075  

390  

11,330  

9,679  

3,988  

1,928  

1,171  

9,559  

479  

463  

2,130  

40,727

86,596

19,116  

(123)  

14,766  

(2,995)  

30,764

2,306  

33,070

929

2,088

3,532

1,837

5

523

232

231

352

—

1,069

10,798

32,176

389

11,235

10,029

3,736

2,093

1,147

9,865

409

609

2,097

41,220

84,583

18,964

(123)

14,081

(3,026)

29,896

2,291

32,187

$

119,666

$

116,770

__________
(a)

Exelon’s consolidated assets include $9,667 million and $9,597 million at December 31, 2018 and 2017 , respectively, of certain VIEs that can only be used to settle the
liabilities of the VIE. Exelon’s consolidated liabilities include $3,548 million and $3,618 million at December 31, 2018 and 2017 , respectively, of certain VIEs for which the
VIE creditors do not have recourse to Exelon. See Note 2 – Variable Interest Entities for additional information.

See the Combined Notes to Consolidated Financial Statements

215

 
 
 
   
 
   
 
   
 
 
   
Table of Contents

(In millions, shares in thousands)

Balance, December 31, 2015

Net income

Long-term incentive plan activity

Employee stock purchase plan issuances

Tax benefit on stock compensation

Changes in equity of noncontrolling
interests

Adjustment of contingently redeemable
noncontrolling interest to redemption value

Common stock dividends
($1.26/common share)

Preferred and preference stock

Sale of noncontrolling interests

Redemption of preference stock

Other comprehensive loss, net of income
taxes

Exelon Corporation and Subsidiary Companies
Consolidated Statements of Changes in Equity

Shareholders' Equity

Issued 
Shares

Common 
Stock

Treasury 
Stock

Retained 
Earnings

Accumulated 
Other 
Comprehensive 
Loss

Noncontrolling 
Interests

Preference 
Stock

Total 
Equity

954,668

  $

18,676

  $

(2,327)

  $

12,104

  $

(2,624)

  $

1,308

  $

193

  $

—  

—  

2,868

1,242

—  

—  

—  

—  
—  
—  
—  

—  

85

55

(18)

—  

—  

—  
—  

(4)
—  

—  

—  
—  
—  
—  

—  

—  

—  
—  
—  
—  

—  

1,121

—  
—  
—  

—  

—  

(1,172)

—  
—  
—  

—  

—  
—  
—  
—  

—  

—  

—  
—  
—  
—  

(36)

67
—  
—  
—  

5

157

—  
—  

243
—  

—  

Balance, December 31, 2016

958,778

$

18,794

$

(2,327)

$

12,053

$

(2,660)

$

1,780

$

Net income

Long-term incentive plan 
activity

Employee stock purchase 
plan issuances

Common stock issued from treasury stock

Sale of noncontrolling interests

Changes in equity of noncontrolling
interests

Common stock dividends
($1.31/common share)

Other comprehensive income (loss), net of
income taxes

Impact of adoption of Reclassification of
Certain Tax Effects from AOCI standard

—  

5,066

1,324

—  
—  

—  

—  

—  

—  

—  

56

150
—  

(36)

—  

—  

—  

—  

—  

—  

—  

3,786

—  

—  

2,204

(1,054)

—  

—  

—  

—  

—  

—  

—  

(1,243)

—  

539

—  

—  

—  
—  
—  

—  

—  

173

(539)

90

—  

—  
—  

443

(20)

—  

(2)

—  

Balance, December 31, 2017

965,168

$

18,964

$

(123)

$

14,081

$

(3,026)

$

2,291

$

Net income

Long-term incentive plan activity

Employee stock purchase plan issuances

Changes in equity of noncontrolling
interests

Sale of noncontrolling interests

Common stock dividends
($1.38/common share)

Other comprehensive income, net of
income taxes

Impact of adoption of Recognition and
Measurement of Financial Assets and
Liabilities standard

—  

—  

3,534

1,318

—  
—  

—  

—  

—  

41

105

—  

6

—  

—  

—  

—  
—  
—  

—  
—  

—  

—  

—  

2,010

—  
—  

—  
—  

(1,339)

—  

14

—  
—  
—  

—  
—  

—  

41

(10)

74
—  
—  

(60)
—  

—  

1

—  

8
—  
—  
—  

—  

—  

—  

(8)
—  

(193)

$

$

—  

—
—  

—  

—  
—  
—  

—  

—  

—  

—  

—
—  
—  
—  

—  
—  

—  

—  

—  

27,330

1,196

85

55

(18)

5

157

(1,172)

(8)

239

(193)

(36)

27,640

3,876

56

150

1,150

407

(20)

(1,243)

171

—

32,187

2,084

41

105

(60)

6

(1,339)

42

4

Balance, December 31, 2018

970,020

$

19,116

$

(123)

$

14,766

$

(2,995)

$

2,306

$

—

$

33,070

See the Combined Notes to Consolidated Financial Statements

216

 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exelon Generation Company, LLC and Subsidiary Companies
Consolidated Statements of Operations and Comprehensive Income

(In millions)
Operating revenues

Operating revenues

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power and fuel

Purchased power and fuel from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation and amortization

Taxes other than income

Total operating expenses

Gain (loss) on sales of assets and businesses

Bargain purchase gain

Gain on deconsolidation of business

Operating income

Other income and (deductions)

Interest expense, net

Interest expense to affiliates

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Equity in losses of unconsolidated affiliates

Net income

Net income attributable to noncontrolling interests

Net income attributable to membership interest

Comprehensive income, net of income taxes

Net income

Other comprehensive income (loss), net of income taxes

Unrealized gain on cash flow hedges

Unrealized gain (loss) on investments in unconsolidated affiliates

Unrealized (loss) gain on foreign currency translation

Unrealized gain on marketable securities

Other comprehensive income

Comprehensive income

Comprehensive income attributable to noncontrolling interests

Comprehensive income attributable to membership interest

For the Years Ended December 31,

2018

2017

2016

$

19,169   $

17,385   $

1,268  

20,437

1,115  

18,500

11,679  

14  

4,803  

661  

1,797  

556  

9,671  

19  

5,602  

697  

1,457  

555  

16,318

1,439

17,757

8,818

12

5,000

663

1,879

506

19,510

18,001

16,878

48  

—  

—  

975  

(396)  

(36)  

(178)  

(610)

365  

(108)  

(30)  

443

73  

2  

233  

213  

947  

(401)  

(39)  

948  

508

1,455  

(1,376)  

(33)  

2,798

88  

370

$

2,710

$

(59)

—

—

820

(325)

(39)

401

37

857

282

(25)

550

67

483

443   $

2,798   $

550

12  

1  

(10)  

—  

3

3  

4  

7  

1  

15

446

$

2,813

$

74  

86  

372   $

2,727   $

2

(4)

10

1

9

559

67

492

$

$

$

$

See the Combined Notes to Consolidated Financial Statements

217

 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Cash flows from operating activities

Net income

Exelon Generation Company, LLC and Subsidiary Companies
Consolidated Statements of Cash Flows

Adjustments to reconcile net income to net cash flows provided by operating activities:

Depreciation, amortization and accretion, including nuclear fuel and energy contract amortization

Impairment losses of long-lived assets

Gain on deconsolidation of business

(Gain) loss on sales of assets and businesses

Bargain purchase gain

Deferred income taxes and amortization of investment tax credits

Net fair value changes related to derivatives

Net realized and unrealized losses (gains) on NDT fund investments

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Option premiums (paid) received, net

Collateral received (posted), net

Income taxes

Pension and non-pension postretirement benefit contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Proceeds from NDT fund sales

Investment in NDT funds

Reduction of restricted cash from deconsolidation of business

Proceeds from sales of assets and businesses

Acquisitions of assets and businesses, net

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Change in short-term borrowings

Proceeds from short-term borrowings with maturities greater than 90 days

Repayments of short-term borrowings with maturities greater than 90 days

Issuance of long-term debt

Retirement of long-term debt

Changes in Exelon intercompany money pool

Distributions to member

Contributions from member

Sale of noncontrolling interests

Other financing activities

Net cash flows used in financing activities

Increase (decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

Cash, cash equivalents and restricted cash at end of period

See the Combined Notes to Consolidated Financial Statements

218

For the Years Ended December 31,

2018

2017

2016

$

443   $

2,798   $

550

3,415  
50  
—  

(48)
—  

(451)
307  
303  
298  

(359)

8  

(12)
376  

(43)
64  

(193)

(139)

(158)

3,861

(2,242)
8,762  

(8,997)

—  
90  

(154)

10  

(2,531)

—  
1  

(1)
15  

(141)

46  

(1,001)

155  
—  

(55)

(981)
349  
554  
903

$

3,056  
510  

(213)

(2)

(233)

(2,023)

167  

(616)
112  

(320)

(7)

(29)

4  
28  

(129)
496  

(148)

(152)

3,299

(2,259)
7,845  

(8,113)

(87)
218  

(208)

(58)

(2,662)

(620)
121  

(200)
1,645  

(1,261)

(1)

(659)
102  
396  

(54)

(531)
106  
448  
554

$

$

3,519

243

—

59

—

(277)

40

(229)

15

(152)

(21)

(4)

29

(66)

923

182

(152)

(217)

4,442

(3,078)

9,496

(9,738)

—

37

(293)

(240)

(3,816)

620

240

(162)

388

(202)

(1,191)

(922)

142

372

(19)

(734)

(108)

556

448

 
 
 
 
   
   
 
   
   
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Mark-to-market derivative assets

Receivables from affiliates

Unamortized energy contract assets

Inventories, net

Fossil fuel and emission allowances

Materials and supplies

Assets held for sale

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Nuclear decommissioning trust funds

Investments

Goodwill

Mark-to-market derivative assets

Prepaid pension asset

Unamortized energy contract assets

Deferred income taxes

Other

Total deferred debits and other assets

Total assets (a)

Exelon Generation Company, LLC and Subsidiary Companies
Consolidated Balance Sheets

December 31,

2018

2017

ASSETS

$

750   $

153  

2,941  

562  

804  

173  

49  

251  

963  

904  

883  

8,433

23,981  

11,661  

414  

47  

452  

1,421  

371  

21  

755  

$

15,142

47,556

$

See the Combined Notes to Consolidated Financial Statements

219

416

138

2,697

321

976

140

60

264

937

—

933

6,882

24,906

13,272

433

47

334

1,502

395

16

670

16,669

48,457

 
 
 
   
 
   
 
   
 
   
 
   
Table of Contents

Exelon Generation Company, LLC and Subsidiary Companies
Consolidated Balance Sheets

(In millions)

LIABILITIES AND EQUITY

Current liabilities

Short-term borrowings

Long-term debt due within one year

Accounts payable

Accrued expenses

Payables to affiliates

Borrowings from Exelon intercompany money pool

Mark-to-market derivative liabilities

Unamortized energy contract liabilities

Renewable energy credit obligation

Liabilities held for sale

Other

Total current liabilities

Long-term debt

Long-term debt to affiliates

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Asset retirement obligations

Non-pension postretirement benefit obligations

Spent nuclear fuel obligation

Payables to affiliates

Mark-to-market derivative liabilities

Unamortized energy contract liabilities

Other

Total deferred credits and other liabilities

Total liabilities (a)

Commitments and contingencies

Equity

Member’s equity

Membership interest

Undistributed earnings

Accumulated other comprehensive loss, net

Total member’s equity

Noncontrolling interests

Total equity

Total liabilities and equity

December 31,

2018

2017

$

—   $

906  

1,847  

898  

139  

100  

449  

31  

343  

777  

279  

5,769

6,989  

898  

3,383  

9,450  

900  

1,171  

2,606  

252  

20  

610  

18,392

32,048

9,518  

3,724  

(38)  

13,204

2,304  

15,508

$

47,556

$

2

346

1,773

1,022

123

54

211

43

352

—

265

4,191

7,734

910

3,811

9,844

916

1,147

3,065

174

48

658

19,663

32,498

9,357

4,349

(37)

13,669

2,290

15,959

48,457

__________
(a) Generation’s consolidated assets include $9,634 million and $9,556 million at December 31, 2018 and 2017 , respectively, of certain VIEs that can only be used to settle
the liabilities of the VIE. Generation’s consolidated liabilities include $3,480 million and $3,516 million at December 31, 2018 and 2017 , respectively, of certain VIEs for
which the VIE creditors do not have recourse to Generation. See Note 2 – Variable Interest Entities for additional information.

See the Combined Notes to Consolidated Financial Statements

220

 
 
 
   
 
   
 
   
 
 
   
 
   
Table of Contents

Exelon Generation Company, LLC and Subsidiary Companies
Consolidated Statements of Changes in Equity

Member’s Equity

(In millions)

Membership 
Interest

Undistributed 
Earnings

Accumulated 
Other 
Comprehensive 
Loss, net

Noncontrolling 
Interests

Total 
Equity

Balance, December 31, 2015

$

8,997   $

2,737   $

(63)

  $

1,307   $

12,978

Net income

Sale of noncontrolling interests

Adjustment of contingently redeemable
noncontrolling interests due to release of
contingency

Changes in equity of noncontrolling interests

Contributions from member

Distributions to member

Other comprehensive income, net of income
taxes

—

(4)

—  

—  

268  

—  

—

Balance, December 31, 2016

$

9,261

$

Net income

Sale of noncontrolling interests

Changes in equity of noncontrolling interests

Distribution of net retirement benefit obligation to
member

Contributions from member

Distributions to member

Other comprehensive income (loss), net of
income taxes

—

(36)  

—  

33

99  

—

—

483

—

—  

—  

—  

(922)  

—

2,298

2,710

—  

—  

—

—  

(659)

—

—

—

—  

—  

—  

—  

9

67

243

157  

5  

—  

—  

—

$

(54)

$

1,779

$

—

—  

—  

—

—  

—

17

88

443  

(18)  

—

—  

—

(2)

550

239

157

5

268

(922)

9

13,284

2,798

407

(18)

33

99

(659)

15

Balance, December 31, 2017

$

9,357

$

4,349

$

(37)

$

2,290

$

15,959

Net income

Sale of noncontrolling interests

Changes in equity of noncontrolling interests

Contributions from member

Distributions to member

Other comprehensive income, net of income
taxes

Impact of adoption of Recognition and
Measurement of Financial Assets and Liabilities
standard

—  

6  

—  

155  

—  

—  

—  

370  

—  

—  

—  

(1,001)  

—  

6  

—  

—  

—  

—  

—  

2

(3)

73  

—  

(60)  

—  

—  

1  

—  

443

6

(60)

155

(1,001)

3

3

Balance, December 31, 2018

$

9,518   $

3,724   $

(38)

  $

2,304   $

15,508

See the Combined Notes to Consolidated Financial Statements

221

 
 
Table of Contents

Commonwealth Edison Company and Subsidiary Companies
Consolidated Statements of Operations and Comprehensive Income

(In millions)

Operating revenues

Electric operating revenues

Revenues from alternative revenue programs

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power

Purchased power from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation and amortization

Taxes other than income

Total operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Interest expense to affiliates

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

Comprehensive income

For the Years Ended December 31,

2018

2017

2016

$

5,884   $

5,478   $

5,263

(29)  

27  

43  

15  

(24)

15

5,882  

5,536  

5,254

1,626  

529  

1,068  

267  

940  

311  

4,741  

5  

1,146  

(334)  

(13)  

33  

(314)  

832  

168  

1,533  

108  

1,157  

270  

850  

296  

4,214  

1  

1,323  

(348)  

(13)  

22  

(339)  

984  

417  

$

$

664   $

664   $

567   $

567   $

1,411

47

1,303

227

775

293

4,056

7

1,205

(448)

(13)

(65)

(526)

679

301

378

378

See the Combined Notes to Consolidated Financial Statements

222

 
 
 
 
   
   
 
   
   
 
   
   
Table of Contents

Commonwealth Edison Company and Subsidiary Companies
Consolidated Statements of Cash Flows

(In millions)

Cash flows from operating activities

Net income

Adjustments to reconcile net income to net cash flows provided by operating activities:

Depreciation, amortization and accretion

Deferred income taxes and amortization of investment tax credits

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Counterparty collateral received (posted), net and cash deposits

Income taxes

Pension and non-pension postretirement benefit contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Changes in short-term borrowings

Issuance of long-term debt

Retirement of long-term debt

Contributions from parent

Dividends paid on common stock

Other financing activities

Net cash flows provided by financing activities

Increase (decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

For the Years Ended December 31,

2018

2017

2016

$

664   $

567   $

940  

259  

242  

(136)  

26  

1  

70  

11  

62  

(42)  

(348)  

1,749  

(2,126)  

29  

(2,097)  

—  

1,350  

(840)  

500  

(459)  

(17)  

534  

186  

144  

850  

659  

164  

(59)  

8  

4  

(297)  

(26)  

(308)  

(41)  

6  

(2,250)  

20  

(2,230)  

—  

1,000  

(425)  

651  

(422)  

(15)  

789  

86  

58  

378

775

439

215

(25)

3

1

339

7

306

(38)

105

(2,734)

49

(2,685)

(294)

1,200

(665)

315

(369)

(18)

169

(11)

69

58

1,527  

2,505

Cash, cash equivalents and restricted cash at end of period

$

330   $

144   $

See the Combined Notes to Consolidated Financial Statements

223

 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Current assets

Commonwealth Edison Company and Subsidiary Companies
Consolidated Balance Sheets

ASSETS

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Receivables from affiliates

Inventories, net

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Investments

Goodwill

Receivables from affiliates

Prepaid pension asset

Other

Total deferred debits and other assets

Total assets

December 31,

2018

2017

$

135   $

29  

539  

320  

20  

148  

293  

86  

1,570  

22,058  

1,307  

6  

2,625  

2,217  

1,035  

395  

7,585  

76

5

559

266

13

152

225

68

1,364

20,723

1,054

6

2,625

2,528

1,188

238

7,639

See the Combined Notes to Consolidated Financial Statements

224

$

31,213   $

29,726

 
 
 
   
 
   
 
   
 
   
Table of Contents

(In millions)

Current liabilities

Commonwealth Edison Company and Subsidiary Companies
Consolidated Balance Sheets

LIABILITIES AND SHAREHOLDERS’ EQUITY

December 31,

2018

2017

Long-term debt due within one year

$

300   $

Accounts payable

Accrued expenses

Payables to affiliates

Customer deposits

Regulatory liabilities

Mark-to-market derivative liability

Other

Total current liabilities

Long-term debt

Long-term debt to financing trust

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Asset retirement obligations

Non-pension postretirement benefits obligations

Regulatory liabilities

Mark-to-market derivative liability

Other

Total deferred credits and other liabilities

Total liabilities

Commitments and contingencies

Shareholders’ equity

Common stock

Other paid-in capital

Retained deficit unappropriated

Retained earnings appropriated

Total shareholders’ equity

607  

373  

119  

111  

293  

26  

96  

1,925  

7,801  

205  

3,813  

118  

201  

6,050  

223  

630  

11,035  

20,966  

1,588  

7,322  

(1,639)  

2,976  

10,247  

Total liabilities and shareholders’ equity

$

31,213   $

See the Combined Notes to Consolidated Financial Statements

225

840

568

327

74

112

249

21

103

2,294

6,761

205

3,469

111

219

6,328

235

562

10,924

20,184

1,588

6,822

(1,639)

2,771

9,542

29,726

 
 
 
 
   
 
   
 
   
 
 
   
Table of Contents

(In millions)

Commonwealth Edison Company and Subsidiary Companies
Consolidated Statements of Changes in Shareholders’ Equity

Common
Stock

Other
Paid-In
Capital

Retained Deficit
Unappropriated

Retained
Earnings
Appropriated

Total
Shareholders’
Equity

Balance, December 31, 2015

$

1,588   $

5,677   $

(1,639)   $

2,617   $

Net income

Common stock dividends

Contribution from parent

Parent tax matter indemnification

Appropriation of retained earnings for future dividends

—  

—  

—  

—  

—  

—  

—  

315  

158  

—  

378  

—  

—  

—  

(378)  

—  

(369)  

—  

—  

378  

Balance, December 31, 2016

$

1,588   $

6,150   $

(1,639)   $

2,626   $

Net income

Common stock dividends

Contributions from parent

Parent tax matter indemnification

Appropriation of retained earnings for future dividends

Balance, December 31, 2017

Net income

Common stock dividends

Contributions from parent

Appropriation of retained earnings for future dividends

Balance, December 31, 2018

$

$

—  

—  

—  

—  

—  

—  

—  

651  

21  

—  

567  

—  

—  

—  

(567)  

—  

(422)  

—  

—  

567  

1,588   $

6,822   $

(1,639)   $

2,771   $

—  

—  

—  

—  

—  

—  

500  

—  

664  

—  

—  

(664)  

—  

(459)  

—  

664  

1,588   $

7,322   $

(1,639)   $

2,976   $

10,247

8,243

378

(369)

315

158

—

8,725

567

(422)

651

21

—

9,542

664

(459)

500

—

See the Combined Notes to Consolidated Financial Statements

226

 
 
 
 
Table of Contents

PECO Energy Company and Subsidiary Companies
Consolidated Statements of Operations and Comprehensive Income

(In millions)
Operating revenues

Electric operating revenues

Natural gas operating revenues

Revenues from alternative revenue programs

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power

Purchased fuel

Purchased power from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation and amortization

Taxes other than income

Total operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Interest expense to affiliates, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

Comprehensive income

For the Years Ended December 31,

2018

2017

2016

$

2,469   $

2,369   $

568  

(7)  

8  

494  

—  

7  

2,524

462

—

8

3,038

2,870

2,994

734  

230  

126  

742  

156  

301  

163  

648  

186  

135  

657  

149  

286  

154  

2,452

2,215

1  

587

(115)  

(14)  

8  

(121)

466

6  

—  

655

(115)  

(11)  

9  

(117)

538

104  

$

$

460

460

$

$

434

434

$

$

598

162

287

665

146

270

164

2,292

—

702

(111)

(12)

8

(115)

587

149

438

438

See the Combined Notes to Consolidated Financial Statements

227

 
 
 
 
   
   
 
   
   
 
   
   
Table of Contents

PECO Energy Company and Subsidiary Companies
Consolidated Statements of Cash Flows

(In millions)
Cash flows from operating activities

Net income

Adjustments to reconcile net income to net cash flows provided by
operating activities:

Depreciation, amortization and accretion

Deferred income taxes and amortization of investment tax
credits

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Income taxes

Pension and non-pension postretirement benefit

contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Changes in intercompany money pool

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Issuance of long-term debt

Retirement of long-term debt

Contributions from parent

Dividends paid on common stock

Other financing activities

Net cash flows (used in) provided by financing activities

(Decrease) increase in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

Cash, cash equivalents and restricted cash at end of period

For the Years Ended December 31,

2018

2017

2016

$

460   $

434   $

438

301  

286  

(5)  

51  

(74)  

7  

(14)  

(3)  

15  

(28)  

29  

739

(849)  

—  

9  

(840)

700  

(500)  

89  

(306)  

(22)  

(39)

(140)  

275  

19  

54  

(44)  

(6)  

1  

6  

34  

(24)  

(5)  

755

(732)  

131  

4  

(597)

325  

—  

16  

(288)  

(3)  

50

208  

67  

$

135

$

275

$

270

78

65

(71)

6

6

67

8

(30)

(8)

829

(686)

(131)

20

(797)

300

(300)

18

(277)

(4)

(263)

(231)

298

67

See the Combined Notes to Consolidated Financial Statements

228

 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Inventories, net

Fossil fuel

Materials and supplies

Prepaid utility taxes

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Investments

Receivables from affiliates

Prepaid pension asset

Other

Total deferred debits and other assets

Total assets

PECO Energy Company and Subsidiary Companies
Consolidated Balance Sheets

ASSETS

December 31,

2018

2017

$

130   $

5  

321  

151  

38  

37  

—  

81  

19  

782

8,610  

460  

25  

389  

349  

27  

1,250

See the Combined Notes to Consolidated Financial Statements

229

$

10,642

$

271

4

327

105

31

30

8

29

17

822

8,053

381

25

537

340

12

1,295

10,170

 
 
 
   
 
   
 
   
 
   
 
   
Table of Contents

(In millions)

Current liabilities

PECO Energy Company and Subsidiary Companies
Consolidated Balance Sheets

LIABILITIES AND SHAREHOLDER'S EQUITY

December 31,

2018

2017

Long-term debt due within one year

$

—   $

Accounts payable

Accrued expenses

Payables to affiliates

Customer deposits

Regulatory liabilities

Other

Total current liabilities

Long-term debt

Long-term debt to financing trusts

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Asset retirement obligations

Non-pension postretirement benefits obligations

Regulatory liabilities

Other

Total deferred credits and other liabilities

Total liabilities

Commitments and contingencies

Shareholder's equity

Common stock

Retained earnings

Accumulated other comprehensive income, net

Total shareholder's equity

Total liabilities and shareholder's equity

370  

113  

59  

68  

175  

24  

809

3,084  

184  

1,933  

27  

288  

421  

76  

2,745

6,822

2,578  

1,242  

—  

3,820

$

10,642

$

See the Combined Notes to Consolidated Financial Statements

230

500

370

114

53

66

141

23

1,267

2,403

184

1,789

27

288

549

86

2,739

6,593

2,489

1,087

1

3,577

10,170

 
 
 
   
 
   
 
   
 
 
   
Table of Contents

(In millions)

Balance, December 31, 2015

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2016

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2017

Net income

Common stock dividends

Contributions from parent

Impact of adoption of Recognition and Measurement of
Financial Assets and Liabilities standard

Balance, December 31, 2018

PECO Energy Company and Subsidiary Companies
Consolidated Statements of Changes in Shareholder's Equity

Common
Stock

Retained
Earnings

Accumulated
Other
Comprehensive
Income

Total
Shareholder's
Equity

$

$

$

$

2,455   $

—  

—  

18  

780   $

438  

(277)  

—  

2,473

$

941

$

—  

—  

16  

434  

(288)  

—  

2,489

$

1,087

$

—  

—  

89  

—  

460  

(306)  

—  

1  

2,578

$

1,242

$

1

  $

—  

—  

—  

1

$

—  

—  

—  

1

$

—  

—  

—  

(1)

—

$

3,236

438

(277)

18

3,415

434

(288)

16

3,577

460

(306)

89

—

3,820

See the Combined Notes to Consolidated Financial Statements

231

 
 
 
 
 
Table of Contents

Baltimore Gas and Electric Company and Subsidiary Companies
Consolidated Statements of Operations and Comprehensive Income

(In millions)

Operating revenues

Electric operating revenues

Natural gas operating revenues

Revenues from alternative revenue programs

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power

Purchased fuel

Purchased power from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation and amortization

Taxes other than income

Total operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Interest expense to affiliates

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

Preference stock dividends

Net income attributable to common shareholder

Comprehensive income

Comprehensive income attributable to preference stock dividends

Comprehensive income attributable to common shareholder

For the Years Ended December 31,

2018

2017

2016

$

2,428   $

2,384   $

738  

(26)  

29  

652  

124  

16  

2,531

628

53

21

3,169

3,176

3,233

671  

254  

257  

615  

162  

483  

254  

566  

183  

384  

563  

153  

473  

240  

2,696

2,562

1  

474

(106)  

—  

19  

(87)

387  

74  

313

—  

—  

614

(95)  

(10)  

16  

(89)

525  

218  

307

—  

$

$

$

313

$

307

$

313

$

—  

313   $

307

$

—  

307   $

528

162

604

605

132

423

229

2,683

—

550

(87)

(16)

21

(82)

468

174

294

8

286

294

8

286

See the Combined Notes to Consolidated Financial Statements

232

 
 
 
 
   
   
 
   
   
 
   
   
 
 
   
   
Table of Contents

(In millions)

Cash flows from operating activities

Net income

Baltimore Gas and Electric Company and Subsidiary Companies
Consolidated Statements of Cash Flows

For the Years Ended December 31,

2018

2017

2016

$

313   $

307   $

Adjustments to reconcile net income to net cash flows provided by operating activities:

Depreciation and amortization

Impairment losses on long-lived assets and regulatory assets

Deferred income taxes and amortization of investment tax credits

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Collateral received, net

Income taxes

Pension and non-pension postretirement benefit contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Changes in short-term borrowings

Issuance of long-term debt

Retirement of long-term debt

Retirement of long-term debt to financing trust

Redemption of preference stock

Dividends paid on preference stock

Dividends paid on common stock

Contributions from parent

Other financing activities

Net cash flows provided by (used in) financing activities

(Decrease) increase in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

483  

—  

76  

58  

8  

12  

2  

(1)  

4  

(20)  

(54)  

(92)  

789

(959)  

9  

(950)

(42)  

300  

—  

—  

—  

—  

(209)  

109  

(2)  

156

(5)  

18  

473  

7  

145  

65  

(5)  

(4)  

(9)  

(15)  

—  

60  

(53)  

(150)  

821

(882)  

7  

(875)

32  

300  

(41)  

(250)  

—  

—  

(198)  

184  

(5)  

22

(32)  

50  

Cash, cash equivalents and restricted cash at end of period

$

13

$

18

$

See the Combined Notes to Consolidated Financial Statements

233

294

423

52

118

88

(98)

3

1

138

—

18

(49)

(43)

945

(934)

24

(910)

(165)

850

(379)

—

(190)

(8)

(179)

61

(11)

(21)

14

36

50

 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Receivables from affiliates

Inventories, net

Gas held in storage

Materials and supplies

Prepaid utility taxes

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Investments

Prepaid pension asset

Other

Total deferred debits and other assets

Total assets

Baltimore Gas and Electric Company and Subsidiary Companies
Consolidated Balance Sheets

ASSETS

December 31,

2018

2017

$

7   $

6  

353  

90  

1  

36  

39  

74  

177  

3  

786

8,243  

398  

5  

279  

5  

687

17

1

375

94

1

37

40

69

174

3

811

7,602

397

5

285

4

691

See the Combined Notes to Consolidated Financial Statements

234

$

9,716

$

9,104

 
 
   
 
   
 
   
 
   
 
   
Baltimore Gas and Electric Company and Subsidiary Companies
Consolidated Balance Sheets

LIABILITIES AND SHAREHOLDER'S EQUITY

December 31,

2018

2017

$

35   $

Table of Contents

(In millions)

Current liabilities

Short-term borrowings

Accounts payable

Accrued expenses

Payables to affiliates

Customer deposits

Regulatory liabilities

Other

Total current liabilities

Long-term debt

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Asset retirement obligations

Non-pension postretirement benefits obligations

Regulatory liabilities

Other

Total deferred credits and other liabilities

Total liabilities

Commitments and contingencies

Shareholder's equity

Common stock

Retained earnings

Total shareholder's equity

Total liabilities and shareholder's equity

See the Combined Notes to Consolidated Financial Statements

235

295  

155  

65  

120  

77  

27  

774

2,876  

1,222  

24  

201  

1,192  

73  

2,712

6,362

1,714  

1,640  

3,354

$

9,716

$

77

265

164

52

116

62

24

760

2,577

1,244

23

202

1,101

56

2,626

5,963

1,605

1,536

3,141

9,104

 
 
 
   
 
   
 
   
 
 
   
Table of Contents

(In millions)

Balance, December 31, 2015

Net income

Preference stock dividends

Common stock dividends

Distributions to parent

Contributions from parent

Redemption of preference stock

Balance, December 31, 2016

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2017

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2018

Baltimore Gas and Electric Company and Subsidiary Companies
Consolidated Statements of Changes in Shareholder's Equity

Common
Stock

Retained
Earnings

Total
Shareholder's
Equity

Preference 
stock
not subject to
mandatory
redemption

Total
Equity

$

1,367   $

1,320   $

2,687   $

190   $

2,877

—  

—  

—  

(7)  

61  

—  

294  

(8)  

(179)  

—  

—  

—  

294  

(8)  

(179)  

(7)  

61  

—  

1,421

$

1,427

$

2,848

$

—  

—  

184  

307  

(198)  

—  

307  

(198)  

184  

—  

—  

—  

—  

(190)  

— $

—  

—  

—  

294

(8)

(179)

(7)

61

(190)

2,848

307

(198)

184

1,605

$

1,536

$

3,141

$

— $

3,141

—  

—  

109  

313  

(209)  

—  

313  

(209)  

109  

—  

—  

—  

313

(209)

109

1,714

$

1,640

$

3,354

$

— $

3,354

$

$

$

See the Combined Notes to Consolidated Financial Statements

236

 
 
 
 
 
Table of Contents

Pepco Holdings LLC and Subsidiary Companies
Consolidated Statements of Operations and Comprehensive Income (Loss)

(In millions)

Operating revenues

Electric operating revenues

Natural gas operating revenues

Revenues from alternative revenue programs

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power

Purchased fuel

Purchased power from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation, amortization and accretion

Taxes other than income

Total operating expenses

Gain (loss) on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income (loss) before income taxes

Income taxes

Equity in earnings of unconsolidated affiliates

Net income (loss)

Successor

Predecessor

For the Years Ended 
December 31,

March 24 to December
31,

    January 1 to March 23,

2018

2017

2016

2016

$

4,609   $

4,428   $

3,463     $

1,122

181  

—  

15  

4,805

161  

40  

50  

4,679  

92    

43    

45    

57

(26)

—

3,643    

1,153

1,387  

1,182  

89  

355  

978  

152  

740  

455  

4,156

1  

650

(261)  

43  

(218)  

432

35  

1  

398  

71  

463  

918  

150  

675  

452  

3,911  

1  

769  

(245)  

54  

(191)  

578  

217  

1  

362  

925    

36    

486    

1,144    

89    

515    

354    

3,549    

(1)    

93    

(195)    

44    

(151)    

(58)    

3    

—    

(61)    

471

26

—

294

—

152

105

1,048

—

105

(65)

(4)

(69)

36

17

—

19

19

19

1

1

20

Net income (loss) attributable to membership interest/common
shareholders

Comprehensive income (loss), net of income taxes

Net income (loss)

Other comprehensive income (loss), net of income taxes

Pension and non-pension postretirement benefit plans:

Actuarial loss reclassified to periodic cost

Other comprehensive income

Comprehensive income (loss)

$

$

$

398   $

362   $

(61)     $

398   $

362   $

(61)     $

—  

—  

—  

—  

—    

—    

398   $

362   $

(61)     $

See the Combined Notes to Consolidated Financial Statements

237

 
   
 
 
 
 
   
 
   
   
     
 
   
   
     
 
   
   
     
 
   
   
     
 
   
   
     
 
   
   
     
Table of Contents

Pepco Holdings LLC and Subsidiary Companies
Consolidated Statements of Cash Flows

Successor

Predecessor

For the Years Ended
December 31,

March 24 to December
31,

    January 1 to March 23,

2018

2017

2016

2016

$

398   $

362   $

(61)

    $

(In millions)

Cash flows from operating activities

Net income (loss)

Adjustments to reconcile net income (loss) to net cash from operating activities:

Depreciation and amortization

Impairment losses on intangibles and regulatory assets

Deferred income taxes and amortization of investment tax credits

Net fair value changes related to derivatives

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Income taxes

Pension and non-pension postretirement benefit contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Purchases of investments

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Changes in short-term borrowings

Proceeds from short-term borrowings with maturities greater than 90 days

Repayments of short-term borrowings with maturities greater than 90 days

Issuance of long-term debt

Retirement of long-term debt
Common stock issued for the Direct Stock Purchase and Dividend Reinvestment Plan and
employee-related compensation

Distributions to member

Contributions from member

Change in Exelon intercompany money pool

Other financing activities

Net cash flows provided by (used in) financing activities

Increase (decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

Cash, cash equivalents and restricted cash at end of period

$

740  
—  
32  
—  
143  

(2)
8  

(14)
45  
34  

(74)

(178)
1,132  

675  
52  
252  
—  
58  

(26)

(2)

(37)

(106)

79  

(99)

(258)
950  

515    
—    
295    
—    
515    

(21)
42    
3    
19    

(22)

(86)

(311)
888    

(1,375)

(1,396)

(1,008)

—  
4  

—  

(1)

—    
15    

(1,371)

(1,397)

(993)

(296)
125  
—  
750  

(299)

—  

(326)
385  
—  

(9)
330  
91  
95  
186   $

328  
—  

(500)
202  

(169)

—  

(311)
758  
—  

(2)
306  

(141)
236  

95

$

(515)

—    

(300)
179    

(338)

—    

(273)
1,251    

(6)

(5)

(7)

(112)
348    
236  

$

See the Combined Notes to Consolidated Financial Statements

238

19

152

—

19

18

46

(28)

—

(4)

42

12

(4)

(8)

264

(273)

(68)

(5)

(346)

(121)

500

—

—

(11)

2

—

—

—

2

372

290

58

348

 
   
 
 
 
 
   
 
   
   
     
 
   
   
     
 
   
   
     
 
 
   
 
 
 
 
   
 
 
   
 
 
   
 
   
   
     
 
 
   
 
 
 
   
 
   
   
     
 
   
 
   
 
 
   
 
 
   
   
 
 
   
   
 
Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Inventories, net

Gas held in storage

Materials and supplies

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Investments

Goodwill

Long-term note receivable

Prepaid pension asset

Deferred income taxes

Other

Pepco Holdings LLC and Subsidiary Companies
Consolidated Balance Sheets

ASSETS

December 31,

2018

2017

$

124   $

43  

453  

177  

9  

163  

489  

75  

1,533  

13,446  

2,312  

130  

4,005  

—  

486  

12  

60  

Total deferred debits and other assets

Total assets (a)

$

7,005  

21,984   $

See the Combined Notes to Consolidated Financial Statements

239

30

42

486

206

7

151

554

75

1,551

12,498

2,493

132

4,005

4

490

4

70

7,198

21,247

 
 
 
   
 
   
 
   
 
   
 
   
Table of Contents

(In millions)

Current liabilities

Short-term borrowings

Long-term debt due within one year

Accounts payable

Accrued expenses

Payables to affiliates

Regulatory liabilities

Unamortized energy contract liabilities

Customer deposits

Other

Total current liabilities

Long-term debt

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Asset retirement obligations

Non-pension postretirement benefit obligations

Regulatory liabilities

Unamortized energy contract liabilities

Other

  Total deferred credits and other liabilities

Total liabilities (a)

Commitments and contingencies

Member's equity

Membership interest

Undistributed gains (losses)

Total member's equity

Total liabilities and member's equity

Pepco Holdings LLC and Subsidiary Companies
Consolidated Balance Sheets

LIABILITIES AND EQUITY

December 31,

2018

2017

$

179   $

125  

496  

256  

94  

84  

119  

116  

123  

1,592  

6,134  

2,146  

52  

103  

1,864  

442  

369  

4,976  

12,702  

9,220  

62  

9,282  

$

21,984   $

350

396

348

261

90

56

188

119

123

1,931

5,478

2,070

16

105

1,872

561

389

5,013

12,422

8,835

(10)

8,825

21,247

_____________
(a)

PHI’s consolidated total assets include $33 million and $41 million at December 31, 2018 and 2017 , respectively, of PHI's consolidated VIE that can only be used to
settle the liabilities of the VIE. PHI’s consolidated total liabilities include $69 million and $102 million at December 31, 2018 and 2017 , respectively, of PHI's consolidated
VIE for which the VIE creditors do not have recourse to PHI. See Note 2 - Variable Interest Entities for additional information.

See the Combined Notes to Consolidated Financial Statements

240

 
 
 
   
 
   
 
   
 
 
   
Table of Contents

Pepco Holdings LLC and Subsidiary Companies
Consolidated Statements of Changes in Equity

(In millions, except share data)

Common Stock (a)

Retained Earnings

Accumulated Other
Comprehensive Loss, net

Total Shareholders'
Equity

Predecessor

Balance, December 31, 2015

Net income

Original issue shares, net

Net activity related to stock-based awards

Other comprehensive income, net of income taxes

Balance, March 23, 2016

Successor

Balance, March 24, 2016 (b)

Net loss

Distributions to member (c)

Contributions from member

Measurement period adjustment of Exelon’s deferred tax
liabilities to reflect unitary state income tax consequences of the
merger

Distribution of net retirement benefit obligation to member

Assumption of member liabilities (d)

Balance, December 31, 2016

Net Income

Distributions to member

Contributions from member

Balance, December 31, 2017

Net Income

Distributions to member

Contributions from member

Balance, December 31, 2018

$

$

$

$

$

$

3,832   $

617

  $

(36)

  $

—  

3  

3  

—  

19

—  

—  

—  

—  

—  

—  

1

4,413

19

3

3

1

3,838

$

636

$

(35)

$

4,439

Membership Interest

Undistributed
Gains/(Losses)

Accumulated Other
Comprehensive Loss, net

Total
Member's Equity

7,200   $

—  

(400)  

1,251  

35  

53  

(62)  

—   $

(61)

—  

—  

—  

—  

—  

8,077

$

(61)

$

—  

—  

758  

8,835

$

—  

—  

385  

9,220

$

362

(311)

—  

(10)

$

398

(326)

—  

62

$

—   $

—  

—  

—  

—  

—  

—  

—

$

—  

—  

—  

—

$

—  

—  

—  

—

$

7,200

(61)

(400)

1,251

35

53

(62)

8,016

362

(311)

758

8,825

398

(326)

385

9,282

__________
(a)

At March 23, 2016 and December 31, 2015 , PHI's (predecessor) shareholders' equity included $3,835 million and $3,829 million of other paid-in capital, and $3 million
and $3 million of common stock, respectively.
The March 24, 2016  ,  beginning  balance  differs  from  the  PHI  Merger  total  purchase  price  by  $59 million related  to  an  acquisition  accounting  adjustment  recorded  at
Exelon Corporate to reflect unitary state income tax consequences of the merger.
Distribution to member includes $235 million of net assets associated with PHI's unregulated business interests and $165 million of cash, each of which were distributed
by PHI to Exelon.
The liabilities assumed include $29 million for PHI stock-based compensation awards and $33 million for a merger related obligation, each assumed by PHI from Exelon.
See Note 5 — Mergers, Acquisitions and Dispositions .

(b)

(c)

(d)

See the Combined Notes to Consolidated Financial Statements

241

 
 
 
 
   
   
   
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
Table of Contents

Potomac Electric Power Company
Statements of Operations and Comprehensive Income

(In millions)

Operating revenues

Electric operating revenues

Revenues from alternative revenue programs

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power

Purchased power from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation and amortization

Taxes other than income

Total operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income

Comprehensive income

For the Years Ended December 31,

2018

2017

2016

$

2,233   $

2,126   $

2,167

—  

6  

26  

6  

14

5

2,239  

2,158  

2,186

448  

206  

275  

226  

385  

379  

1,919  

—  

320  

(128)  

31  

(97)  

223  

13  

210   $

210   $

359  

255  

396  

58  

321  

371  

1,760  

1  

399  

(121)  

32  

(89)  

310  

105  

205   $

205   $

411

295

607

35

295

377

2,020

8

174

(127)

36

(91)

83

41

42

42

$

$

See the Combined Notes to Consolidated Financial Statements

242

 
 
 
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Cash flows from operating activities

Net income

Potomac Electric Power Company
Statements of Cash Flows

For the Years Ended December 31,

2018

2017

2016

$

210   $

205   $

Adjustments to reconcile net income to net cash flows provided by operating activities:

Depreciation and amortization

Impairment losses on regulatory assets

Deferred income taxes and amortization of investment tax credits

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Income taxes

Pension and non-pension postretirement benefit contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Purchases of investments

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Changes in short-term borrowings

Issuance of long-term debt

Retirement of long-term debt

Dividends paid on common stock

Contributions from parent

Other financing activities

Net cash flows provided by financing activities

Increase (decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

385  

—  

(18)  

60  

(5)  

(17)  

(6)  

59  

(13)  

(17)  

(164)  

474  

(656)  

—  

2  

(654)  

14  

200  

(14)  

(169)  

166  

(4)  

193  

13  

40  

321  

14  

113  

(6)  

(20)  

—  

(24)  

(63)  

81  

(72)  

(142)  

407  

(628)  

—  

—  

(628)  

3  

202  

(13)  

(133)  

161  

(1)  

219  

(2)  

42  

Cash, cash equivalents and restricted cash at end of period

$

53   $

40   $

See the Combined Notes to Consolidated Financial Statements

243

42

295

—

153

175

(41)

44

1

32

110

(32)

(128)

651

(586)

(30)

—

(616)

(41)

4

(11)

(136)

187

(3)

—

35

7

42

 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Receivables from affiliates

Inventories, net

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Investments

Prepaid pension asset

Other

Total deferred debits and other assets

Total assets

Potomac Electric Power Company
Balance Sheets

ASSETS

December 31,

2018

2017

$

$

16   $

37  

225  

81  

1  

93  

270  

37  

760  

6,460  

643  

105  

316  

15  

1,079

8,299   $

5

35

250

87

—

87

213

33

710

6,001

678

102

322

19

1,121

7,832

See the Combined Notes to Consolidated Financial Statements

244

 
 
 
   
 
   
 
   
 
   
Table of Contents

(In millions)

Potomac Electric Power Company
Balance Sheets

LIABILITIES AND SHAREHOLDER'S EQUITY

December 31,

2018

2017

Current liabilities

Short-term borrowings

Long-term debt due within one year

Accounts payable

Accrued expenses

Payables to affiliates

Regulatory liabilities

Customer deposits

Merger related obligation

Current portion of DC PLUG obligation

Other

Total current liabilities

Long-term debt

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Non-pension postretirement benefit obligations

Regulatory liabilities

Other

Total deferred credits and other liabilities

Total liabilities

Commitments and contingencies

Shareholder's equity

Common stock

Retained earnings

Total shareholder's equity

Total liabilities and shareholder's equity

$

$

40  

15  

214  

126  

62  

7  

54  

38  

30  

42  

628 —

2,704  

1,064  

29  

822  

312  

2,227  

5,559  

1,636  

1,104  

2,740  

26

19

139

137

74

3

54

42

28

28

550

2,521

1,063

36

829

300

2,228

5,299

1,470

1,063

2,533

7,832

See the Combined Notes to Consolidated Financial Statements

245

$

8,299

$

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(In millions)

Balance, December 31, 2015

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2016

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2017

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2018

Potomac Electric Power Company
Statements of Changes in Shareholder's Equity

Common Stock

Retained Earnings

  Total Shareholder's Equity
2,240

1,118   $

$

$

$

$

1,122   $

—  

—  

187  

1,309   $

—  

—  

161  

42  

(169)  

—  

991   $

205  

(133)  

—  

1,470   $

1,063   $

—  

—  

166  

210  

(169)  

—  

1,636   $

1,104   $

42

(169)

187

2,300

205

(133)

161

2,533

210

(169)

166

2,740

See the Combined Notes to Consolidated Financial Statements

246

 
Table of Contents

Delmarva Power & Light Company
Statements of Operations and Comprehensive Income (Loss)

(In millions)

Operating revenues

Electric operating revenues

Natural gas operating revenues

Revenues from alternative revenue programs

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power

Purchased fuel

Purchased power from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation and amortization

Taxes other than income

Total operating expenses

Gain on sales of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income before income taxes

Income taxes

Net income (loss)

Comprehensive income (loss)

For the Years Ended December 31,

2018

2017

2016

$

1,139   $

1,125   $

181  

4  

8  

161  

6  

8  

1,128

148

(6)

7

1,332

1,300

1,277

352  

89  

120  

182  

162  

182  

56  

282  

71  

179  

283  

32  

167  

57  

369

60

154

422

19

157

55

1,143

1,071

1,236

1  

190

(58)  

10  

(48)

142

22  

120

120

$

$

—  

229

(51)  

14  

(37)

192

71  

121

121

$

$

9

50

(50)

13

(37)

13

22

(9)

(9)

$

$

See the Combined Notes to Consolidated Financial Statements

247

 
 
 
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Cash flows from operating activities

Net income (loss)

Delmarva Power & Light Company
Statements of Cash Flows

For the Years Ended December 31,

2018

2017

2016

$

120   $

121   $

(9)

Adjustments to reconcile net income (loss) to net cash flows provided by operating activities:

Depreciation and amortization

Impairment losses on regulatory assets

Deferred income taxes and amortization of investment tax credits

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Collateral received, net

Income taxes

Pension and non-pension postretirement benefit contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Change in short-term borrowings

Issuance of long-term debt

Retirement of long-term debt

Dividends paid on common stock

Contributions from parent

Other financing activities

Net cash flows provided by financing activities

Increase (decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

182  

—  

24  

24  

8  

(9)  

(3)  

11  

—  

2  

—  

(7)  

352

(364)  

2  

(362)

(216)  

200  

(4)  

(96)  

150  

(2)  

32

22  

2  

167  

6  

89  

9  

(22)  

11  

(5)  

(8)  

—  

26  

(2)  

(71)  

321

(428)  

(1)  

(429)

216  

—  

(40)  

(112)  

—  

—  

64

(44)  

46  

Cash, cash equivalents and restricted cash at end of period

$

24

$

2

$

See the Combined Notes to Consolidated Financial Statements

248

157

—

109

114

(5)

13

—

(4)

1

28

(22)

(72)

310

(349)

13

(336)

(105)

175

(100)

(54)

152

(1)

67

41

5

46

 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Inventories, net

Gas held in storage

Materials and supplies

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Goodwill

Prepaid pension asset

Other

Total deferred debits and other assets

Total assets

Delmarva Power & Light Company
Balance Sheets

ASSETS

December 31,

2018

2017

$

23   $

1  

134  

46  

9  

37  

59  

27  

336

3,821  

231  

8  

186  

6  

431

2

—

146

38

7

36

69

27

325

3,579

245

8

193

7

453

See the Combined Notes to Consolidated Financial Statements

249

$

4,588

$

4,357

 
 
 
   
 
   
 
   
 
   
 
   
Table of Contents

(In millions)

Delmarva Power & Light Company
Balance Sheets

LIABILITIES AND SHAREHOLDER'S EQUITY

December 31,

2018

2017

Current liabilities

Short-term borrowings

Long-term debt due within one year

Accounts payable

Accrued expenses

Payables to affiliates

Regulatory liabilities

Customer deposits

Other

Total current liabilities

Long-term debt

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Non-pension postretirement benefit obligations

Regulatory liabilities

Other

Total deferred credits and other liabilities

Total liabilities

Commitments and contingencies

Shareholder's equity

Common stock

Retained earnings

Total shareholder's equity

Total liabilities and shareholder's equity

$

$

—   $

91  

111  

39  

33  

59  

35  

7  

375

1,403  

628  

17  

606  

50  

1,301

3,079

914  

595  

1,509

4,588

$

216

83

82

35

46

42

35

8

547

1,217

603

14

593

48

1,258

3,022

764

571

1,335

4,357

See the Combined Notes to Consolidated Financial Statements

250

 
 
 
   
 
   
 
   
 
 
   
Table of Contents

(In millions)

Balance, December 31, 2015

Net loss

Common stock dividends

Contributions from parent

Balance, December 31, 2016

Net income

Common stock dividends

Balance, December 31, 2017

Net income

Common stock dividends

Contributions from parent

Balance, December 31, 2018

Delmarva Power & Light Company
Statements of Changes in Shareholder's Equity

Common Stock

Retained Earnings

$

$

$

$

612   $

—  

—  

152  

764   $

—  

—  

764   $

—  

—  

150  

914   $

See the Combined Notes to Consolidated Financial Statements

251

  Total Shareholder's Equity
1,237

625   $

(9)  

(54)  

—  

562

$

121  

(112)  

571

$

120  

(96)  

—  

595

$

(9)

(54)

152

1,326

121

(112)

1,335

120

(96)

150

1,509

 
Table of Contents

Atlantic City Electric Company and Subsidiary Company
Consolidated Statements of Operations and Comprehensive Income (Loss)

(In millions)

Operating revenues

Electric operating revenues

Revenues from alternative revenue programs

Operating revenues from affiliates

Total operating revenues

Operating expenses

Purchased power

Purchased power from affiliates

Operating and maintenance

Operating and maintenance from affiliates

Depreciation and amortization

Taxes other than income

Total operating expenses

Gain on sale of assets

Operating income

Other income and (deductions)

Interest expense, net

Other, net

Total other income and (deductions)

Income (loss) before income taxes

Income taxes

Net income (loss)

Comprehensive income (loss)

For the Years Ended December 31,

2018

2017

2016

$

1,237   $

1,176   $

1,245

(4)  

3  

8  

2  

9

3

1,236

1,186

1,257

587  

29  

188  

142  

136  

5  

541  

29  

279  

28  

146  

6  

614

37

410

18

165

7

1,087

1,029

1,251

—  

149

(64)  

2  

(62)

87

12  

$

$

75

75

$

$

—  

157

(61)  

7  

(54)

103

26  

77

77

$

$

1

7

(62)

9

(53)

(46)

(4)

(42)

(42)

See the Combined Notes to Consolidated Financial Statements

252

 
 
 
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Cash flows from operating activities

Net income (loss)

Atlantic City Electric Company and Subsidiary Company
Consolidated Statements of Cash Flows

For the Years Ended December 31,

2018

2017

2016

$

75   $

77   $

(42)

Adjustments to reconcile net income (loss) to net cash from operating activities:

Depreciation and amortization

Impairment losses on regulatory assets

Deferred income taxes and amortization of investment tax credits

Other non-cash operating activities

Changes in assets and liabilities:

Accounts receivable

Receivables from and payables to affiliates, net

Inventories

Accounts payable and accrued expenses

Income taxes

Pension and non-pension postretirement benefit contributions

Other assets and liabilities

Net cash flows provided by operating activities

Cash flows from investing activities

Capital expenditures

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Change in short-term borrowings

Proceeds from short-term borrowings with maturities greater than 90 days

Issuance of long-term debt

Retirement of long-term debt

Dividends paid on common stock

Contributions from parent

Other financing activities

Net cash flows provided by financing activities

(Decrease) increase in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

136  

—  

25  

24  

(8)  

1  

(4)  

(7)  

(2)  

(6)  

(6)  

228

(335)  

1  

(334)

(94)  

125  

350  

(281)  

(59)  

67  

(3)  

105

(1)

31  

146  

7  

32  

17  

14  

—  

(7)  

(2)  

(11)  

(20)  

(47)  

206

(312)  

(1)  

(313)

108  

—  

—  

(35)  

(68)  

—  

—  

5

(102)

133  

Cash, cash equivalents and restricted cash at end of period

$

30

$

31

$

See the Combined Notes to Consolidated Financial Statements

253

165

—

22

155

(8)

13

(1)

9

174

(17)

(85)

385

(311)

4

(307)

(5)

—

—

(48)

(63)

139

(1)

22

100

33

133

 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

(In millions)

Current assets

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Receivables from affiliates

Inventories, net

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Long-term note receivable

Prepaid pension asset

Other

Total deferred debits and other assets

Total assets (a)

Atlantic City Electric Company and Subsidiary Company
Consolidated Balance Sheets

ASSETS

December 31,

2018

2017

$

7   $

4  

95  

55  

1  

33  

40  

5  

240

2,966  

386  

—  

67  

40  

493

See the Combined Notes to Consolidated Financial Statements

254

$

3,699

$

2

6

92

56

—

29

71

2

258

2,706

359

4

73

45

481

3,445

 
 
 
   
 
   
 
   
 
   
Table of Contents

(In millions)

Atlantic City Electric Company and Subsidiary Company
Consolidated Balance Sheets

LIABILITIES AND SHAREHOLDER'S EQUITY

December 31,

2018

2017

Current liabilities

Short-term borrowings

Long-term debt due within one year

Accounts payable

Accrued expenses

Payables to affiliates

Regulatory liabilities

Customer deposits

Other

Total current liabilities

Long-term debt

Deferred credits and other liabilities

Deferred income taxes and unamortized investment tax credits

Non-pension postretirement benefit obligations

Regulatory liabilities

Other

Total deferred credits and other liabilities

Total liabilities (a)

Commitments and contingencies

Shareholder's equity

Common stock

Retained earnings

Total shareholder's equity

Total liabilities and shareholder's equity

$

$

139   $

18  

154  

35  

28  

18  

26  

4  

422

1,170  

535  

17  

402  

27  

981

2,573

979  

147  

1,126

3,699

$

108

281

118

33

29

11

31

8

619

840

493

14

411

25

943

2,402

912

131

1,043

3,445

_____________
(a)

ACE’s consolidated assets include $23 million and $29 million at December 31, 2018 and 2017 , respectively, of ACE’s consolidated VIE that can only be used to settle
the liabilities of the VIE. ACE’s consolidated liabilities include $59 million and $90 million at December 31, 2018 and 2017 , respectively, of ACE’s consolidated VIE for
which the VIE creditors do not have recourse to ACE. See Note 2 - Variable Interest Entities for additional information.

See the Combined Notes to Consolidated Financial Statements

255

 
 
 
   
 
   
 
   
 
 
   
Table of Contents

(In millions)

Balance, December 31, 2015

Net loss

Common stock dividends

Contributions from parent

Balance, December 31, 2016

Net income

Common stock dividends

Balance, December 31, 2017

Net income

Common stock dividends

Contribution from parent

Balance, December 31, 2018

Atlantic City Electric Company and Subsidiary Company
Consolidated Statements of Changes in Shareholder's Equity

Common Stock

Retained Earnings

$

$

$

$

773   $

—  

—  

139  

912

$

—  

—  

912

$

—  

—  

67  

979

$

See the Combined Notes to Consolidated Financial Statements

256

  Total Shareholder's Equity
1,000

227   $

(42)  

(63)  

—  

122   $

77  

(68)  

131   $

75  

(59)  

—  

147   $

(42)

(63)

139

1,034

77

(68)

1,043

75

(59)

67

1,126

 
Table of Contents

Index to Combined Notes to Consolidated Financial Statements

Combined Notes to Consolidated Financial Statements
(Dollars in millions, except per share data unless otherwise noted)

The notes to the consolidated financial statements that follow are a combined presentation. The following list indicates the Registrants to which the footnotes
apply:

Applicable Notes

Registrant

Exelon Corporation

Exelon Generation
Company, LLC

Commonwealth Edison
Company

PECO Energy Company

Baltimore Gas and Electric
Company

Pepco Holdings LLC

Potomac Electric Power
Company

Delmarva Power & Light
Company

Atlantic City Electric
Company

1

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20

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22

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24

25

26

27

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

1. Significant Accounting Policies (All Registrants)

Description of Business (All Registrants)

Exelon is a utility services holding company engaged in the generation, delivery and marketing of energy through Generation and the energy distribution and
transmission businesses through ComEd, PECO, BGE, Pepco, DPL and ACE. On March 23, 2016 , Exelon completed the merger with PHI, which became a
wholly owned subsidiary of Exelon. PHI is a utility services holding company engaged through its principal wholly owned subsidiaries, Pepco, DPL and ACE, in
the  energy  distribution  and  transmission  businesses.  See  Note  5 — Mergers,  Acquisitions  and  Dispositions  for  additional  information  regarding  the  merger
transaction.

Name of Registrant

Exelon Generation 
Company, LLC

Commonwealth Edison
Company

   Business

   Service Territories

Generation, physical delivery and marketing of power across multiple geographical regions
through its customer-facing business, Constellation, which sells electricity to both wholesale
and retail customers. Generation also sells natural gas, renewable energy and other energy-
related products and services.

Six reportable segments: Mid-Atlantic, Midwest, New England, New York,
ERCOT and Other Power Regions

Purchase and regulated retail sale of electricity

Northern Illinois, including the City of Chicago

  Transmission and distribution of electricity to retail customers

PECO Energy Company

  Purchase and regulated retail sale of electricity and natural gas

  Southeastern Pennsylvania, including the City of Philadelphia (electricity)

Transmission and distribution of electricity and distribution of natural gas to retail customers

Pennsylvania counties surrounding the City of Philadelphia (natural gas)

Baltimore Gas and Electric
Company

Purchase and regulated retail sale of electricity and natural gas

Central Maryland, including the City of Baltimore (electricity and natural gas)

Pepco Holdings LLC

Utility services holding company engaged, through its reportable segments Pepco, DPL and
ACE

Service Territories of Pepco, DPL and ACE

  Transmission and distribution of electricity and distribution of natural gas to retail customers

Potomac Electric  
Power Company

Delmarva Power &  Light
Company

   Purchase and regulated retail sale of electricity

   District of Columbia, and major portions of Montgomery and Prince George’s

Counties, Maryland.

  Transmission and distribution of electricity to retail customers

Purchase and regulated retail sale of electricity and natural gas

Portions of Delaware and Maryland (electricity)

  Transmission and distribution of electricity and distribution of natural gas to retail customers

  Portions of New Castle County, Delaware (natural gas)

Atlantic City Electric Company

  Purchase and regulated retail sale of electricity
  Transmission and distribution of electricity to retail customers

  Portions of Southern New Jersey

Basis of Presentation (All Registrants)

This is a combined annual report of all Registrants. The Notes to the Consolidated Financial Statements apply to the Registrants as indicated above in the Index
to  Combined  Notes  to  Consolidated  Financial  Statements  and  parenthetically  next  to  each  corresponding  disclosure.  When  appropriate,  the  Registrants  are
named  specifically  for  their  related  activities  and  disclosures.  Each  of  the  Registrant’s  Consolidated  Financial  Statements  includes  the  accounts  of  its
subsidiaries. All intercompany transactions have been eliminated.

As a result of the merger with PHI, Exelon’s financial reporting reflects PHI’s consolidated financial results subsequent to the March 23, 2016 , acquisition date. 
Exelon  has  accounted  for  the  merger  transaction  applying  the  acquisition  method  of  accounting,  which  it  has  pushed-down  to  the  consolidated  financial
statements of PHI such that the assets and liabilities of PHI are recorded at their respective fair values, and goodwill has been established as of the acquisition
date.    Accordingly,  the  consolidated  financial  statements  of  PHI  for  periods  before  and  after  the  March  23,  2016  ,  acquisition  date  reflect  different  bases  of
accounting, and the results of operations and the financial positions of the predecessor and successor periods are not comparable.  The acquisition method of
accounting has not been pushed down to PHI’s wholly owned subsidiary utility registrants, Pepco, DPL and ACE. 

258

 
 
 
   
   
 
 
 
   
 
 
 
 
 
 
   
 
 
 
   
   
 
   
 
 
 
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For financial statement purposes, beginning on March 24, 2016 , disclosures related to Exelon also apply to PHI, Pepco, DPL and ACE, unless otherwise noted.

Through  its  business  services  subsidiary,  BSC,  Exelon  provides  its  subsidiaries  with  a  variety  of  support  services  at  cost,  including  legal,  human  resources,
financial, information technology and supply management services. PHI also has a business services subsidiary, PHISCO, which provides a variety of support
services at cost, including legal, accounting, engineering, customer operations, distribution and transmission planning, asset management, system operations,
and power procurement, to PHI operating companies. The costs of BSC and PHISCO are directly charged or allocated to the applicable subsidiaries. The results
of Exelon’s corporate operations are presented as “Other” within the consolidated financial statements and include intercompany eliminations unless otherwise
disclosed.

Exelon owns 100% of Generation, PECO, BGE and PHI and more than 99% of ComEd. PHI owns 100% of Pepco, DPL and ACE. Generation owns 100% of its
significant consolidated subsidiaries, either directly or indirectly, except for certain consolidated VIEs, including CENG and EGRP, of which Generation holds a
50.01% and 51% interest, respectively. The remaining interests in these consolidated VIEs are included in noncontrolling interests on Exelon’s and Generation’s
Consolidated Balance Sheets. See Note 2 — Variable Interest Entities for additional information of Exelon’s and Generation’s consolidated VIEs.

The Registrants consolidate the accounts of entities in which a Registrant has a controlling financial interest, after the elimination of intercompany transactions.
Where  the  Registrants  do  not  have  a  controlling  financial  interest  in  an  entity,  proportionate  consolidation,  equity  method  accounting  or  accounting  for
investments  in  equity  securities  without  readily  determinable  fair  value  is  applied.  The  Registrants  apply  proportionate  consolidation  when  they  have  an
undivided interest in an asset and are proportionately liable for their share of each liability associated with the asset. The Registrants proportionately consolidate
their  undivided  ownership  interests  in  jointly  owned  electric  plants  and  transmission  facilities.  Under  proportionate  consolidation,  the  Registrants  separately
record  their  proportionate  share  of  the  assets,  liabilities,  revenues  and  expenses  related  to  the  undivided  interest  in  the  asset.  The  Registrants  apply  equity
method accounting when they have significant influence over an investee through an ownership in common stock, which generally approximates a 20% to 50%
voting  interest.  The  Registrants  apply  equity  method  accounting  to  certain  investments  and  joint  ventures,  including  certain  financing  trusts  of  ComEd  and
PECO.  Under  equity  method  accounting,  the  Registrants  report  their  interest  in  the  entity  as  an  investment  and  the  Registrants’  percentage  share  of  the
earnings  from  the  entity  as  single  line  items  in  their  financial  statements.  The  Registrants  use  accounting  for  investments  in  equity  securities  without  readily
determinable  fair  values  if  they  lack  significant  influence,  which  generally  results  when  they  hold  less  than  20%  of  the  common  stock  of  an  entity.  Under
accounting for investments in equity securities without readily determinable fair values, the Registrants report their investments at cost adjusted for changes from
observable transactions for identical or similar investments of the same issuer, less impairment. Changes in measurement are reported in earnings.

The accompanying consolidated financial statements have been prepared in accordance with GAAP for annual financial statements and in accordance with the
instructions to Form 10-K and Regulation S-X promulgated by the SEC.

Use of Estimates (All Registrants)

The preparation of financial statements of each of the Registrants in conformity with GAAP requires management to make estimates and assumptions that affect
the amounts reported in the financial statements and accompanying notes. Areas in which significant estimates have been made include, but are not limited to,
the accounting for nuclear decommissioning costs and other AROs, pension and other postretirement benefits, the application of purchase accounting, inventory
reserves, allowance for uncollectible accounts, goodwill and asset impairments, derivative instruments, unamortized energy contracts, fixed asset depreciation,
environmental costs and other loss contingencies, taxes and unbilled energy revenues. Actual results could differ from those estimates.

Prior Period Adjustments and Reclassifications (All Registrants)

Certain prior year amounts in the Registrants' Consolidated Statements of Operations and Comprehensive Incom e, Consolidated Statements of Cash Flows,
Consolidated Balance Sheets and Consolidated Statements of Changes in Shareholders' Equity have been recasted to reflect new accounting standards issued
by the FASB and adopted as of January 1, 2018. See New Accounting Standards below for additional information.

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(Dollars in millions, except per share data unless otherwise noted)

Accounting for the Effects of Regulation (Exelon and the Utility Registrants)

For their regulated electric and gas operations, Exelon and the Utility Registrants reflect the effects of cost-based rate regulation in their financial statements,
which is required for entities with regulated operations that meet the following criteria: 1) rates are established or approved by a third-party regulator; (2) rates
are designed to recover the entities’ cost of providing services or products; and (3) there is a reasonable expectation that rates designed to recover costs can be
charged to and collected from customers. Exelon and the Utility Registrants account for their regulated operations in accordance with regulatory and legislative
guidance from the regulatory authorities having jurisdiction, principally the ICC, PAPUC, MDPSC, DCPSC, DPSC and NJBPU, under state public utility laws and
the  FERC  under  various  Federal  laws.  Regulatory  assets  and  liabilities  are  amortized  and  the  related  expense  or  revenue  is  recognized  in  the  Consolidated
Statements of Operations consistent with the recovery or refund included in customer rates. Exelon's regulatory assets and liabilities as of the balance sheet
date  are  probable  of  being  recovered  or  settled  in  future  rates.  If  a  separable  portion  of  the  Registrants'  business  was  no  longer  able  to  meet  the  criteria
discussed above, the affected entities would be required to eliminate from their consolidated financial statements the effects of regulation for that portion, which
could have a material impact on their financial statements. See Note 4 — Regulatory Matters for additional information.

With  the  exception  of  income  tax-related  regulatory  assets  and  liabilities,  Exelon  and  the  Utility  Registrants  classify  regulatory  assets  and  liabilities  with  a
recovery  or  settlement  period  greater  than  one  year  as  both  current  and  non-current  in  their  Consolidated  Balance  Sheets,  with  the  current  portion
representing the amount expected to be recovered from or settled to customers over the next twelve-month period as of the balance sheet date.  Income tax-
related regulatory assets and liabilities are classified entirely as non-current in Exelon's and the Utility Registrants’ Consolidated Balance Sheets to align with the
classification of the related deferred income tax balances.

Exelon and the Utility Registrants treat the impacts of a final rate order received after the balance sheet date but prior to the issuance of the financial statements
as a non-recognized subsequent event, as the receipt of a final rate order is a separate and distinct event that has future impacts on the parties affected by the
order.

Revenues (All Registrants)

Operating  Revenues.  The  Registrants’  operating  revenues  generally  consist  of  revenues  from  contracts  with  customers  involving  the  sale  and  delivery  of
energy  commodities  and  related  products  and  services,  utility  revenues  from  alternative  revenue  programs  (ARP),  and  realized  and  unrealized  revenues
recognized  under  mark-to-market  energy  commodity  derivative  contracts.  The  Registrants  recognize  revenue  from  contracts  with  customers  to  depict  the
transfer of goods or services to customers in an amount that the entities expect to be entitled to in exchange for those goods or services. Generation’s primary
sources of revenue include competitive sales of power, natural gas, and other energy-related products and services. The Utility Registrants’ primary sources of
revenue  include  regulated  electric  and  natural  gas  tariff  sales,  distribution  and  transmission  services.  At  the  end  of  each  month,  the  Registrants  accrue  an
estimate for the unbilled amount of energy delivered or services provided to customers.

ComEd records ARP revenue for its best estimate of the electric distribution, energy efficiency, and transmission revenue impacts resulting from future changes
in rates that ComEd believes are probable of approval by the ICC and FERC in accordance with its formula rate mechanisms. BGE, Pepco and DPL record ARP
revenue for their best estimate of the electric and natural gas distribution revenue impacts resulting from future changes in rates that they believe are probable of
approval by the MDPSC and/or DCPSC in accordance with their revenue decoupling mechanisms. PECO, BGE, Pepco, DPL and ACE record ARP revenue for
their best estimate of the transmission revenue impacts resulting from future changes in rates that they believe are probable of approval by FERC in accordance
with their formula rate mechanisms. See Note 4 — Regulatory Matters and Note 23 — Supplemental Financial Information for additional information.

Option Contracts, Swaps and Commodity Derivatives. Certain option contracts and swap arrangements that meet the definition of derivative instruments are
recorded at fair value with subsequent changes in fair value recognized as revenue or expense. The classification of revenue or expense is based on the intent
of the transaction. To the extent a Utility Registrant receives full cost recovery for energy procurement and related costs from retail customers, it records the fair
value of its energy swap contracts with unaffiliated suppliers as well as an offsetting regulatory asset or liability in its Consolidated Balance Sheets. See Note 4
— Regulatory Matters and Note 12 — Derivative Financial Instruments for additional information.

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(Dollars in millions, except per share data unless otherwise noted)

Taxes Directly Imposed on Revenue-Producing Transactions. The Registrants collect certain taxes from customers such as sales and gross receipts taxes,
along with other taxes, surcharges and fees, that are levied by state or local governments on the sale or distribution of gas and electricity. Some of these taxes
are imposed on the customer, but paid by the Registrants, while others are imposed on the Registrants. Where these taxes are imposed on the customer, such
as  sales taxes,  they  are  reported  on  a  net  basis  with no  impact to  the  Consolidated  Statements  of Operations  and  Comprehensive  Income.  However,  where
these taxes are imposed on the Registrants, such as gross receipts taxes or other surcharges or fees, they are reported on a gross basis. Accordingly, revenues
are recognized for the taxes collected from customers along with an offsetting expense. Se e Note 23 — Supplemental Financial Information for Generation’s,
ComEd’s, PECO’s, BGE’s, Pepco's, DPL's and ACE's utility taxes that are presented on a gross basis.

Income Taxes (All Registrants)

Deferred Federal and state income taxes are recorded on significant temporary differences between the book and tax basis of assets and liabilities and for tax
benefits carried forward. Investment tax credits have been deferred in the Registrants’ Consolidated Balance Sheets and are recognized in book income over
the life of the related property. The Registrants account for uncertain income tax positions using a benefit recognition model with a two-step approach; a more-
likely-than-not recognition criterion; and a measurement approach that measures the position as the largest amount of tax benefit that is greater than 50% likely
of being realized upon ultimate settlement. If it is not more-likely-than-not that the benefit of the tax position will be sustained on its technical merits, no benefit is
recorded. Uncertain tax positions that relate only to timing of when an item is included on a tax return are considered to have met the recognition threshold. The
Registrants recognize accrued interest related to unrecognized tax benefits in Interest expense or Other income and deductions (interest income) and recognize
penalties related to unrecognized tax benefits in Other, net in their Consolidated Statements of Operations and Comprehensive Income.

Pursuant to the IRC and relevant state taxing authorities, Exelon and its subsidiaries file consolidated or combined income tax returns for Federal and certain
state jurisdictions where allowed or required. See Note 14 — Income Taxes for additional information.

Cash and Cash Equivalents (All Registrants)

The Registrants consider investments purchased with an original maturity of three months or less to be cash equivalents.

Restricted Cash and Cash Equivalents (All Registrants)

Restricted  cash  and  cash  equivalents  represent  funds  that  are  restricted  to  satisfy  designated  current  liabilities.  As  of  December  31,  2018  and 2017 , the
Registrants' restricted cash and cash equivalents primarily represented the following items:

Registrant

Exelon
Generation

ComEd
PECO
BGE

PHI
Pepco
DPL
ACE

Description

Payment of medical, dental, vision and long-term disability benefits, in addition to the items listed for Generation and the Utility Registrants.
Project-specific nonrecourse financing structures for debt service and financing of operations of the underlying entities.
Collateral held from suppliers associated with energy and REC procurement contracts, any over-recovered RPS costs and alternative
compliance payments received from RES pursuant to FEJA and costs for the remediation of an MGP site.
Proceeds from the sales of assets that were subject to PECO’s mortgage indenture.
Proceeds from the loan program for the completion of certain energy efficiency measures and collateral held from energy suppliers.
Payment of merger commitments, collateral held from its energy suppliers associated with procurement contracts and repayment of transition
bonds.
Payment of merger commitments and collateral held from energy suppliers.
Collateral held from energy suppliers.
Repayment of transition bonds and collateral held from energy suppliers.

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(Dollars in millions, except per share data unless otherwise noted)

Restricted  cash  and  cash  equivalents  not  available  to  satisfy  current  liabilities  are  classified  as  noncurrent  assets.  As  of  December  31,  2018  and 2017 , the
Registrants' noncurrent  restricted cash and cash equivalents primarily represented  ComEd’s over-recovered  RPS costs and alternative  compliance payments
received from RES pursuant to FEJA and costs for the remediation of an MGP site, and ACE’s repayment of transition bonds.

See Note 23 — Supplemental Financial Information for additional information.

Allowance for Uncollectible Accounts (All Registrants)

The allowance for uncollectible accounts reflects the Registrants’ best estimates of losses on the customers' accounts receivable balances. For Generation, the
allowance is based on accounts  receivable aging historical experience and other currently available information. Utility Registrants estimate the allowance by
applying  loss  rates  developed  specifically  for  each  company  to  the  outstanding  receivable  balance  by  customer  risk  segment.  Utility  Registrants'  customer
accounts are written off consistent with approved regulatory requirements. See Note 4 — Regulatory Matters for additional information regarding the regulatory
recovery of uncollectible accounts receivable at ComEd and ACE.

Variable Interest Entities (All Registrants)

Exelon accounts for its investments in and arrangements with VIEs based on the following specific requirements:

•

•

•

requires an entity to qualitatively assess whether it should consolidate a VIE based on whether the entity has a controlling financial interest,

requires an ongoing reconsideration of this assessment instead of only upon certain triggering events, and

requires the entity that consolidates a VIE (the primary beneficiary) to disclose (1) the assets of the consolidated VIE, if they can be used to only settle
specific obligations of the consolidated VIE, and (2) the liabilities of a consolidated VIE for which creditors do not have recourse to the general credit of
the primary beneficiary.

See Note 2 — Variable Interest Entities for additional information.

Inventories (All Registrants)

Inventory  is  recorded  at  the  lower  of  weighted  average  cost  or  net  realizable  value.  Provisions  are  recorded  for  excess  and  obsolete  inventory.  Fossil  fuel,
materials and supplies, and emissions allowances are generally included in inventory when purchased. Fossil fuel and emissions allowances are expensed to
purchased power and fuel expense when used or sold. Materials and supplies generally includes transmission, distribution and generating plant materials and
are expensed to operating and maintenance or capitalized to property, plant and equipment, as appropriate, when installed or used.

Debt and Equity Security Investments (Exelon and Generation )

Debt Security Investments. Debt securities are reported at fair value and classified as available-for-sale securities. Unrealized gains and losses, net of tax, are
reported in OCI.

Equity Security Investments without Readily Determinable Fair Values. Exelon has certain equity securities without readily determinable fair values. Exelon
has elected to use the practicability exception to measure these investments, defined as cost adjusted for changes from observable transactions for identical or
similar investments of the same issuer, less impairment. Changes in measurement are reported in earnings.

Equity Security Investments with Readily Determinable Fair Values. Equity securities held in the NDT funds are classified as equity securities with readily
determinable fair values. Realized and unrealized gains and losses, net of tax, on Generation’s NDT funds associated with the Regulatory Agreement Units are
included in regulatory liabilities at Exelon, ComEd and PECO and in Noncurrent payables to affiliates at Generation and in Noncurrent receivables from affiliates
at ComEd and PECO. Realized and unrealized gains and losses, net of tax, on Generation’s NDT funds associated with the Non-Regulatory Agreement Units
are included in earnings at Exelon and Generation. Exelon's and Generation's NDT funds are classified as current or noncurrent assets, depending on the timing
of  the  decommissioning  activities  and  income  taxes  on  trust  earnings.  See  Note  4 — Regulatory  Matters  for  additional  information  regarding  ComEd’s  and
PECO’s regulatory assets and liabilities and Note 11 —

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(Dollars in millions, except per share data unless otherwise noted)

Fair  Value  of  Financial  Assets  and  Liabilities  and Note 15 — Asset Retirement Obligations for  additional  information  regarding  marketable  securities  held  by
NDT funds.

Property, Plant and Equipment (All Registrants)

Property, plant and equipment is recorded at original cost. Original cost includes construction-related direct labor and material costs. The Utility Registrants also
include indirect construction costs including labor and related costs of departments associated with supporting construction activities. When appropriate, original
cost also includes capitalized interest for Generation, Exelon Corporate and PHI and AFUDC for regulated property at the Utility Registrants. The cost of repairs
and maintenance,  including planned major maintenance activities and minor replacements  of property, is charged to Operating and maintenance  expense as
incurred.

Third parties reimburse the Utility Registrants for all or a portion of expenditures for certain capital projects. Such contributions in aid of construction costs (CIAC)
are recorded as a reduction to Property, plant and equipment, net. DOE SGIG and other funds reimbursed to the Utility Registrants have been accounted for as
CIAC.

For Generation, upon retirement, the cost of property is generally charged to accumulated depreciation in accordance with the composite and group methods of
depreciation. Upon replacement of an asset, the costs to remove the asset, net of salvage, are capitalized to gross plant when incurred as part of the cost of the
newly-installed asset and recorded to depreciation expense over the life of the new asset. Removal costs, net of salvage, incurred for property that will not be
replaced is charged to Operating and maintenance expense as incurred.

For the Utility Registrants, upon retirement, the cost of property, net of salvage, is charged to accumulated depreciation consistent with the composite and group
methods  of  depreciation.    Depreciation  expense  at  ComEd,  BGE,  Pepco,  DPL  and  ACE  includes  the  estimated  cost  of  dismantling  and  removing  plant  from
service upon retirement. Actual incurred removal costs are applied against a related regulatory liability or recorded to a regulatory asset if in excess of previously
collected removal costs.  PECO’s removal costs are capitalized to accumulated depreciation when incurred, and recorded to depreciation expense over the life
of the new asset constructed consistent with PECO’s regulatory recovery method.

Capitalized  Software.  Certain  costs,  such  as  design,  coding,  and  testing  incurred  during  the  application  development  stage  of  software  projects  that  are
internally developed or purchased for operational use are capitalized within Property, plant and equipment. Such capitalized amounts are amortized ratably over
the expected lives of the projects when they become operational, generally not to exceed five years. Certain other capitalized software costs are being amortized
over longer lives based on the expected life or pursuant to prescribed regulatory requirements.

Capitalized  Interest  and  AFUDC.  During  construction,  Exelon  and  Generation  capitalize  the  costs  of  debt  funds  used  to  finance  non-regulated  construction
projects. Capitalization of debt funds is recorded as a charge to construction work in progress and as a non-cash credit to interest expense.

AFUDC is the cost, during the period of construction, of debt and equity funds used to finance construction projects for regulated operations. AFUDC is recorded
to  construction  work  in  progress  and  as  a  non-cash  credit  to  an  allowance  that  is  included  in  interest  expense  for  debt-related  funds  and  other  income  and
deductions for equity-related funds. The rates used for capitalizing AFUDC are computed under a method prescribed by regulatory authorities.

See Note 6 — Property, Plant and Equipment , Note 9 — Jointly Owned Electric Utility Plant and Note 23 — Supplemental Financial Information for additional
information regarding property, plant and equipment.

Nuclear Fuel (Exelon and Generation)

The cost of nuclear fuel is capitalized within Property, plant and equipment and charged to fuel expense using the unit-of-production method. Any potential future
SNF disposal fees will be expensed through fuel expense. Additionally, certain on-site SNF storage costs are being reimbursed by the DOE since a DOE (or
government-owned) long-term storage facility has not been completed. See Note 22 — Commitments and Contingencies for additional information regarding the
cost of SNF storage and disposal.

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(Dollars in millions, except per share data unless otherwise noted)

Nuclear Outage Costs (Exelon and Generation)

Costs associated with nuclear outages, including planned major maintenance activities, are expensed to Operating and maintenance expense or capitalized to
Property, plant and equipment (based on the nature of the activities) in the period incurred.

Depreciation and Amortization (All Registrants)

Except for the amortization of nuclear fuel, depreciation is generally recorded over the estimated service lives of property, plant and equipment on a straight-line
basis using the group, composite or unitary methods of depreciation. The group approach is typically for groups of similar assets that have approximately the
same  useful  lives  and  the  composite  approach  is  used  for  dissimilar  assets  that  have  different  lives.  Under  both  methods,  a  reporting  entity  depreciates  the
assets over the average life of the assets in the group. The Utility Registrants' depreciation expense includes the estimated cost of dismantling and removing
plant from service upon retirement, which is consistent with each utility's regulatory recovery method. The estimated service lives for the Registrants are based
on a combination of depreciation studies, historical retirements, site licenses and management estimates of operating costs and expected future energy market
conditions. See Note 8 — Early Plant Retirements for additional information on the impacts of expected and potential early plant retirements.

See Note 6 — Property, Plant and Equipment for additional information regarding depreciation.

Amortization  of  regulatory  assets  and  liabilities  are  recorded  over  the  recovery  or  refund  period  specified  in  the  related  legislation  or  regulatory  order  or
agreement. When the recovery or refund period is less than one year, amortization is recorded to the line item in which the deferred cost or income would have
originally  been  recorded  in  the  Utility  Registrants’  Consolidated  Statements  of  Operations  and  Comprehensive  Income.  Amortization  of  ComEd’s  electric
distribution and energy efficiency formula rate regulatory assets and the Utility Registrants' transmission formula rate regulatory assets is recorded to Operating
revenues.

Amortization of income tax related regulatory assets and liabilities is generally recorded to Income tax expense. With the exception of the regulatory assets and
liabilities  discussed  above,  when  the  recovery  period  is  more  than  one  year,  the  amortization  is  generally  recorded  to  Depreciation  and  amortization  in  the
Registrants’ Consolidated Statements of Operations and Comprehensive Income.

See Note 4 — Regulatory Matters and Note 23 — Supplemental Financial Information for additional information regarding Generation’s nuclear fuel and ARC,
and the amortization of the Utility Registrants' regulatory assets.

Asset Retirement Obligations (All Registrants)

Generation estimates and recognizes a liability for its legal obligation to perform asset retirement activities even though the timing and/or methods of settlement
may  be  conditional  on  future  events.  Generation  generally  updates  its  nuclear  decommissioning  ARO  annually,  unless  circumstances  warrant  more  frequent
updates, based on its annual evaluation of cost escalation factors and probabilities assigned to the multiple outcome scenarios within its probability-weighted
discounted cash flow models. Generation’s multiple outcome scenarios are generally based on decommissioning cost studies which are updated, on a rotational
basis, for each of Generation’s nuclear units at least every five years, unless circumstances warrant more frequent updates. AROs are accreted throughout each
year  to  reflect  the  time  value  of  money  for  these  present  value  obligations  through  a  charge  to  Operating  and  maintenance  expense  in  the  Consolidated
Statements of Operations and Comprehensive Income or, in the case of the Utility Registrants' accretion, through an increase to regulatory assets. See Note 15
— Asset Retirement Obligations for additional information.

Guarantees (All Registrants)

The Registrants recognize, at the inception of a guarantee, a liability for the fair market value of the obligations they have undertaken by issuing the guarantee,
including the ongoing obligation to perform over the term of the guarantee in the event that the specified triggering events or conditions occur.

The liability that is initially recognized at the inception of the guarantee is reduced as the Registrants are released from risk under the guarantee. Depending on
the nature of the guarantee, the release from risk of the Registrant may be recognized only upon the expiration or settlement of the guarantee or by a systematic
and rational

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(Dollars in millions, except per share data unless otherwise noted)

amortization method over the term of the guarantee. See Note 22 — Commitments and Contingencies for additional information.

Asset Impairments

Long-Lived  Assets  (All  Registrants).  The  Registrants  evaluate  the  carrying  value  of  their  long-lived  assets  or  asset  groups,  excluding  goodwill,  when
circumstances  indicate  the  carrying  value  of  those  assets  may  not  be  recoverable.  Indicators  of  impairment  may  include  a  deteriorating  business  climate,
including,  but  not  limited  to,  declines  in  energy  prices,  condition  of  the  asset,  specific  regulatory  disallowance,  or  plans  to  dispose  of  a  long-lived  asset
significantly  before  the  end  of  its  useful  life.  The  Registrants  determine  if  long-lived  assets  and  asset  groups  are  impaired  by  comparing  the  undiscounted
expected future cash flows to the carrying value. When the undiscounted cash flow analysis indicates a long-lived asset or asset group is not recoverable, the
amount of the impairment loss is determined by measuring the excess of the carrying amount of the long-lived asset or asset group over its fair value. See Note
7 — Impairment of Long-Lived Assets and Intangibles for additional information.

Goodwill (Exelon, ComEd and PHI). Goodwill represents the excess of the purchase price paid over the estimated fair value of the net assets acquired and
liabilities assumed in the acquisition of a business. Goodwill is not amortized, but is tested for impairment at least annually or on an interim basis if an event
occurs  or  circumstances  change  that  would  more  likely  than  not  reduce  the  fair  value  of  a  reporting  unit  below  its  carrying  value.  See  Note  10 — Intangible
Assets for additional information.

Equity  Method  Investments  (Exelon  and  Generation).  Exelon  and  Generation  regularly  monitor  and  evaluate  equity  method  investments  to  determine
whether  they  are  impaired.  An  impairment  is  recorded  when  the  investment  has  experienced  a  decline  in  value  that  is  other-than-temporary  in  nature.
Additionally, if the entity in which Generation holds an investment recognizes an impairment loss, Exelon and Generation would record their proportionate share
of that impairment loss and evaluate the investment for an other-than-temporary decline in value.

Debt Security Investments (Exelon and Generation). Declines in the fair value of debt security investments below the cost basis are reviewed to determine if
such decline is other-than-temporary. If the decline is determined to be other-than-temporary, the amount of the impairment loss is included in earnings.

Equity Security Investments (Exelon and Generation). Equity investments with readily determinable fair values are measured and recorded at fair value with
any  changes  in  fair  value  recorded  through  earnings.  Investments  in  equity  securities  without  readily  determinable  fair  values  are  qualitatively  assessed  for
impairment each reporting period. If it is determined that the equity security is impaired on the basis of the qualitative assessment, an impairment loss will be
recognized in earnings to the amount by which the security’s carrying amount exceeds its fair value.

Derivative Financial Instruments (All Registrants)

All derivatives are recognized on the balance sheet at their fair value unless they qualify for certain exceptions, including the normal purchases and normal sales
exception. For derivatives intended to serve as economic hedges, changes in fair value are recognized in earnings each period. Amounts classified in earnings
are included in Operating revenue, Purchased power and fuel, Interest expense or Other, net in the Consolidated Statements of Operations and Comprehensive
Income based on the activity the transaction is economically hedging. While the majority of the derivatives serve as economic hedges, there are also derivatives
entered into for proprietary trading purposes, subject to Exelon’s Risk Management Policy, and changes in the fair value of those derivatives are recorded in
revenue  in  the  Consolidated  Statements  of  Operations  and  Comprehensive  Income.  At  the  Utility  Registrants,  changes  in  fair  value  may  be  recorded  as  a
regulatory asset or liability if there is an ability to recover or return the associated costs. Cash inflows and outflows related to derivative instruments are included
as a component of operating, investing or financing cash flows in the Consolidated Statements of Cash Flows, depending on the nature of each transaction. On
July 1, 2018, Exelon and Generation de-designated its fair value and cash flow hedges. See Note 4 — Regulatory Matters and Note 12 — Derivative Financial
Instruments for additional information.

As part of Generation’s energy marketing business, Generation enters into contracts to buy and sell energy to meet the requirements of its customers. These
contracts  include  short-term  and  long-term  commitments  to  purchase  and  sell  energy  and  energy-related  products  in  the  energy  markets  with  the  intent  and
ability to deliver or take delivery of the underlying physical commodity. Normal purchases and normal sales are contracts where physical delivery is probable,
quantities are expected to be used or sold in the normal course of business over a reasonable period of time and will not be financially settled. Revenues and
expenses  on  derivative  contracts  that  qualify,  and  are  designated,  as  normal  purchases  and  normal  sales  are  recognized  when  the  underlying  physical
transaction is

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(Dollars in millions, except per share data unless otherwise noted)

completed. While these contracts are considered derivative financial instruments, they are not required to be recorded at fair value, but rather are recorded on
an accrual basis of accounting. See Note 12 — Derivative Financial Instruments for additional information.

Retirement Benefits (All Registrants)

Exelon sponsors defined benefit pension plans and other postretirement benefit plans for essentially all employees.

The measurement of the plan obligations and costs of providing benefits under these plans involve various factors assumptions, and accounting elections. The
impact of assumption changes or experience different from that assumed on pension and other postretirement benefit obligations is recognized over time rather
than immediately recognized in the Consolidated Statements of Operations and Comprehensive Income. Gains or losses in excess of the greater of ten percent
of the projected benefit obligation or the MRV of plan assets are amortized over the expected average remaining service period of plan participants. See Note 16
— Retirement Benefits for additional information.

New Accounting Standards (All Registrants)

New Accounting Standards Adopted in 2018: In 2018, the Registrants adopted the following new authoritative accounting guidance issued by the FASB.

Defined  Benefit  Plan  Disclosures  (Issued  August  2018).  Eliminates  existing  disclosure  requirements  related  to  amounts  in Accumulated  other  comprehensive
income expected to be recognized in Net periodic benefit cost over the next year and the effects of a one-percentage-point change in the assumed health care
cost trend rates. In addition, new disclosures were added such as the weighted-average interest crediting rates for cash balance plans and an explanation for
the reasons for significant gains and losses related to changes in the benefit obligation. The standard is effective January 1, 2021, with early adoption permitted,
and  must  be  applied  retrospectively.  Exelon  early  adopted  this  standard  in  the  fourth  quarter  of  2018.  See  Note  16  —  Retirement  Benefits  for  additional
information.

Fair  Value  Measurement  Disclosures  (Issued  August  2018).  Updates  the  disclosure  requirements  for  fair  value  measurements  to  improve  the  usefulness  of
information for financial statement users. The guidance removes the requirements to disclose (1) the amount of and reasons for transfers between Level 1 and
Level 2, (2) the policy for timing of transfers between levels, and (3) the valuation processes for Level 3 fair value measurements and adds a requirement to
disclose the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. The standard is effective January
1,  2020,  with  early  adoption  permitted.  The  amendments  to  remove  disclosures  must  be  applied  retrospectively  and  can  be  early  adopted,  while  the
amendments to add disclosures must be applied prospectively and adoption can be delayed until the effective date. The Registrants early adopted, in the fourth
quarter of 2018, the amendments to remove disclosures and will adopt the amendments to add disclosures in the first quarter of 2020. The impact of the new
disclosures is not expected to be material to the Registrants’ consolidated financial statements. See Note 11 — Fair Value of Financial Assets and Liabilities for
additional information.

Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (Issued February 2018). Provides an election for a reclassification from
AOCI  to  Retained  earnings  to  eliminate  the  stranded  tax  effects  resulting  from  the  TCJA.  This  standard  is  effective  January  1,  2019,  with  early  adoption
permitted, and may be applied either in the period of adoption or retrospective to each period in which the effects of the TCJA were recognized. Exelon early
adopted this standard and elected to apply the guidance retrospectively as of December 31, 2017, which resulted in an increase to Exelon’s Retained earnings
and Accumulated other comprehensive loss of $539 million in its Consolidated Balance Sheet and Consolidated Statement of Changes in Shareholders' Equity
related to deferred income taxes associated with Exelon’s pension and OPEB obligations. There was no impact for Generation or the Utility Registrants. Exelon's
accounting policy is to release the stranded tax effects from AOCI related to its pension and OPEB plans under a portfolio (or aggregate) approach as an entire
pension or OPEB plan is liquidated or terminated. See Note 21 — Changes in Accumulated Other Comprehensive Income for additional information.

Improving  the  Presentation  of  Net  Periodic  Pension  Cost  and  Net  Periodic  Postretirement  Benefit  Cost  (Issued  March  2017).  Changes  the  accounting  and
presentation of pension and OPEB costs at the plan sponsor (i.e., Exelon) level. The guidance requires plan sponsors to report the service cost and other non-
service cost components of net periodic pension cost and net periodic OPEB cost (together, net benefit cost) separately. Under the new guidance,

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

service cost is presented as part of income from operations and the other non-service cost components are classified outside of income from operations in the
Consolidated Statements of Operations and Comprehensive Income. Additionally, service cost is the only component eligible for capitalization on a prospective
basis beginning on January 1, 2018. Under prior GAAP, the total amount of net benefit cost was recorded as part of income from operations and all components
were  eligible  for  capitalization.  Exelon  applied  the  presentation  of  the  service  component  and  the  other  non-service  cost  components  of  net  benefit  costs
retrospectively  and,  accordingly,  have  recasted  those  amounts,  which  were  not  material,  in  its  Consolidated  Statement  of  Operations  and  Comprehensive
Income  in  prior  periods  presented.  Exelon  elected  the  practical  expedient  that  permits  an  employer  to  use  the  amounts  disclosed  in  its  pension  and  other
postretirement  benefit  plan  note  for  the  comparative  periods  as  the  estimation  basis  for  applying  the  retrospective  presentation  requirements.  In  Exelon’s
consolidated  financial  statements,  non-service  cost  components  of  pension  and  OPEB  cost  capitalizable  under  a  regulatory  framework  were  prospectively
reported  as  regulatory  assets  (previously,  they  were  capitalizable  under  pension  and  OPEB  accounting  guidance  and  reported  as  PP&E).  These  regulatory
assets are amortized outside of operating income. See Note 16 — Retirement Benefits for additional information.

Generation, ComEd, PECO, BGE, BSC, PHI, Pepco, DPL, ACE and PHISCO participate in Exelon’s single employer pension and OPEB plans and apply multi-
employer accounting. Multi-employer accounting was not impacted by this standard; therefore, Exelon's subsidiary financial statements did not change upon its
adoption.

Statement of Cash Flows: Classification of Restricted Cash (Issued November 2016). The standard states that amounts generally described as restricted cash
and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period  and end-of-period  total amounts
shown on the statement of cash flows (instead of being presented as cash flow activities). The Registrants applied the new guidance using the full retrospective
method and, accordingly, have recasted the presentation of restricted cash in their Consolidated Statements of Cash Flows in the prior periods presented. See
Note 23 — Supplemental Financial Information for additional information.

Recognition  and  Measurement  of  Financial  Assets  and  Financial  Liabilities  (Issued  January  2016).  Eliminates  the  available-for-sale  and  cost  method
classification for equity securities and requires that all equity investments (other than those accounted for using the equity method of accounting) be measured
and  recorded  at  fair  value  with  any  changes  in  fair  value  recorded  through  earnings  and,  for  equity  investments  without  a  readily  determinable  fair  value,
provides a measurement alternative of cost less impairment plus or minus adjustments for observable price changes in identical or similar assets. In addition,
equity investments without readily determinable fair values must be qualitatively assessed for impairment each reporting period and fair value determined if any
significant impairment indicators exist. If fair value is less than carrying value, the impairment is recorded through net income immediately in the period in which
it is identified. The guidance does not impact the classification or measurement of investments in debt securities. The guidance also amends several disclosure
requirements, including requiring i) financial assets and financial liabilities to be presented separately in the balance sheet or note, grouped by measurement
category  and  form,  ii)  disclosure  of  the  methods  and  significant  assumptions  used  to  estimate  fair  value  or  a  description  of  the  changes  in  the  methods  and
assumptions used to estimate fair value, and iii) for financial assets and liabilities measured at amortized cost, disclosure of the fair value of the amount that
would be received to sell the asset or paid to transfer the liability. The guidance was applied using a modified retrospective transition approach with a cumulative
effect  adjustment  to  retained  earnings  for  initial  application  of  the  guidance  at  the  date  of  adoption.  The  Registrants  recorded  an  insignificant  adjustment  to
opening  retained  earnings  as  of  January  1,  2018  related  to  unrealized  gains/losses  on  available  for  sale  equity  securities.  See  Note  21  —  Changes  in
Accumulated Other Comprehensive Income for additional information.

Revenue  from  Contracts  with  Customers  (Issued  May  2014  and  subsequently  amended  to  address  implementation  questions).  Changes  the  criteria  for
recognizing  revenue  from  a  contract  with  a  customer.  The  new  standard  replaces  existing  guidance  on  revenue  recognition,  including  most  industry  specific
guidance, with a five-step model for recognizing and measuring revenue from contracts with customers. The objective of the new standard is to provide a single,
comprehensive  revenue  recognition  model  for  all  contracts  with  customers  to  improve  comparability  within  industries,  across  industries,  and  across  capital
markets. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity
expects to be entitled to in exchange for those goods or services. The guidance also requires a number of disclosures regarding the nature, amount, timing, and
uncertainty  of  revenue  and  the  related  cash  flows.  The  guidance  can  be  applied  retrospectively  to  each  prior  reporting  period  presented  (full  retrospective
method) or retrospectively with a cumulative effect adjustment to retained earnings for initial application of the guidance at the date of initial adoption (modified
retrospective method).  The Registrants applied the new guidance using the full retrospective method

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

and, accordingly, have recasted certain amounts in their Consolidated Statements of Operations and Comprehensive Income, Consolidated Statements of Cash
Flows, Consolidated Balance Sheets, Consolidated Statements of Changes in Shareholders' Equity and Combined Notes to Consolidated Financial Statements
in the prior periods presented. The amounts recasted in the Registrants' 2017 and 2016 Consolidated Statements of Operations and Comprehensive Income are
shown  in  the  table  below.  The  amounts  recasted  in  the  Registrants’  Consolidated  Statements  of  Cash  Flows,  Consolidated  Balance  Sheets,  Consolidated
Statements of Changes in Shareholders' Equity and Combined Notes to Consolidated Financi al Statements were not material. See Note 3 — Revenue from
Contracts with Customers for additional information.

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Table of Contents

For the year ended December
31, 2017

Operating Revenues - As

reported  

Competitive business

revenues $

Rate-regulated utility
revenues

Operating revenues

Electric operating revenues
Natural gas operating
revenues
Operating revenues from
affiliates

Operating Revenues -

Adjustments  

Competitive business

revenues $

Rate-regulated utility
revenues

Operating revenues

Electric operating revenues
Natural gas operating
revenues
Revenues from alternative
revenue programs
Operating revenues from
affiliates

Total operating revenues $

Operating Revenues -
Retrospective application  

Competitive business

revenues $

Rate-regulated utility
revenues

Operating revenues

Electric operating revenues
Natural gas operating
revenues
Revenues from alternative
revenue programs
Operating revenues from
affiliates

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Successor

17,360   $

—   $

—   $

—   $

—   $

—   $

—   $

—   $

16,171  

—  

—  

—  

—  

—  

17,351  

—  

—  

1,115  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

5,521  

2,369  

2,484  

4,468  

2,152  

1,131  

1,184

—  

15  

494  

676  

7  

16  

161  

50  

—  

6  

161  

8  

—

2

Total operating revenues $

33,531   $

18,466   $

5,536   $

2,870   $

3,176   $

4,679   $

2,158   $

1,300   $ 1,186

34   $

—   $

—   $

—   $

—   $

—   $

—   $

—   $

(207)  

—  

—  

—  

207  

—  

34   $

—  

34  

—  

—  

—  

—  

—  

—  

(43)  

—  

43  

—  

—  

—  

(100)  

(24)  

124  

—  

—  

—  

—  

—  

—  

—  

—  

(40)  

—  

40  

—  

—  

—  

(26)  

—  

26  

—  

34   $

—   $

—   $

—   $

—   $

—   $

—  

—  

(6)  

—  

6  

—  

—   $

17,394   $

—   $

—   $

—   $

—   $

—   $

—   $

—   $

15,964  

—  

—  

—  

207  

—  

—  

17,385  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

1,115  

5,478  

2,369  

2,384  

4,428  

2,126  

1,125  

1,176

—  

43  

15  

494  

—  

7  

652  

124  

16  

161  

40  

50  

—  

26  

6  

161  

6  

8  

—

8

2

Total operating revenues $

33,565   $

18,500   $

5,536   $

2,870   $

3,176   $

4,679   $

2,158   $

1,300   $ 1,186

269

—

—

—

—

—

—

(8)

—

8

—

—

—

—

—

 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
Table of Contents

For the year ended December 31,
2016

Operating Revenues - As

reported  

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

Successor

Predecessor

March 24, 2016 to
December 31, 2016

January 1, 2016 to
March 23, 2016

Competitive business revenues

$

16,324

  $

Rate-regulated utility revenues

15,036

Operating revenues

Electric operating revenues

Natural gas operating revenues

Operating revenues from
affiliates

Total operating revenues

—  
—  
—  

—  

—   $
—  

16,312

—  
—  

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—     $
—    
—    

5,239

—  

2,524

462

8

2,603

2,181

1,122

1,254

3,506

609  

21  

—  

5  

148  

7  

—  

3  

92    

45    

1,439

15

$

31,360

  $

17,751

  $

5,254

  $

2,994

  $

3,233

  $

2,186

  $

1,277

  $

1,257

  $

3,643

    $

Operating Revenues -

Adjustments  

Competitive business revenues $

6

  $

Rate-regulated utility revenues

Operating revenues

Electric operating revenues

Natural gas operating revenues

Revenues from alternative
revenue programs

Operating revenues from
affiliates

(48)
—  
—  
—  

48

—  

—   $
—  

6
—  
—  

—  

—  

Total operating revenues $

6

  $

6

  $

—   $
—  
—  

24
—  

(24)

—  
—   $

—   $
—  
—  
—  
—  

—  

—  
—   $

—   $
—  
—  

(72)
19  

53  

—   $
—  
—  

(14)
—  

14  

—  
—   $

—  
—   $

—   $
—  
—  
6  
—  

(6)

—  
—   $

—   $
—  
—  

(9)
—  

9  

—  
—   $

Operating Revenues -
Retrospective application  

Competitive business revenues $

16,330

  $

Rate-regulated utility revenues

14,988

Operating revenues

Electric operating revenues

Natural gas operating revenues

Revenues from alternative
revenue programs

Operating revenues from
affiliates

—  
—  
—  

48

—  

—   $
—  

16,318

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—   $
—  
—  

—  
—  

—  

1,439

5,263

—  

2,524

462

(24)

15

—  

8

2,531

2,167

1,128

1,245

3,463

1,122

628  

53  

21  

—  

14  

5  

148  

(6)

7  

—  

9  

3  

92    

43    

45    

57

(26)

—

Total operating revenues $

31,366

  $

17,757

  $

5,254

  $

2,994

  $

3,233

  $

2,186

  $

1,277

  $

1,257

  $

3,643

    $

1,153

270

—

—

—

1,096

57

—

1,153

—

—

—

26

—

(26)

—

—

—

—

—

—     $
—    
—    

(43)
—    

43    

—    
—     $

—     $
—    
—    

 
 
   
   
   
   
   
   
   
 
   
 
 
   
   
   
   
   
   
   
 
   
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
     
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
   
   
   
   
   
   
   
   
     
   
   
   
   
   
   
   
   
     
 
 
 
 
 
 
   
 
 
 
 
 
   
   
   
   
   
   
   
   
     
   
   
   
   
   
   
   
   
     
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

New Accounting Standards Adopted as of January 1, 2019:  The  following new authoritative  accounting  guidance  issued by the  FASB was adopted  as of
January 1, 2019 and will be reflected by the Registrants in their consolidated financial statements beginning in the first quarter of 2019.

Cloud Computing Arrangements (Issued August 2018). Aligns the requirements for capitalizing costs incurred to implement a cloud computing arrangement with
the internal-use software guidance. As a result, certain implementation costs incurred in a cloud computing arrangement that are currently expensed as incurred
will be deferred and amortized over the non-cancellable term of the arrangement plus any reasonably certain renewal periods. The standard is effective January
1, 2020, with early adoption permitted, and can be applied using either a prospective or retrospective transition approach. A retrospective approach requires a
cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. The Registrants early adopted this standard using a prospective
approach as of January 1, 2019. The new guidance is not expected to have a material impact on the Registrants’ financial statements.

Leases (Issued February 2016). Increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance
sheet and disclosing key information about leasing arrangements. The Registrants adopted the standard on January 1, 2019.

The new standard requires lessees to recognize both the right-of-use assets and lease liabilities in the balance sheet for most leases, whereas under previous
GAAP only finance lease liabilities (referred to as capital leases) were recognized in the balance sheet. In addition, the definition of a lease has been revised
which may result in changes to the classification of an arrangement as a lease. Under the new standard, an arrangement that conveys the right to control the
use of an identified asset by obtaining substantially all of its economic benefits and directing how it is used is a lease, whereas the previous definition focuses on
the ability to control the use of the asset or to obtain its output. Quantitative and qualitative disclosures related to the amount, timing and judgments of an entity’s
accounting  for  leases  and  the  related  cash  flows  are  expanded.  Disclosure  requirements  apply  to  both  lessees  and  lessors,  whereas  previous  disclosures
related  only  to  lessees.  The  recognition,  measurement,  and  presentation  of  expenses  and  cash  flows  arising  from  a  lease  by  a  lessee  have  not  significantly
changed from previous GAAP. Lessor accounting is also largely unchanged.

The new standard provides a number of transition practical expedients, which the Registrants have elected, including:

•

•

•

a  "package  of  three"  expedients  that  must  be  taken  together  and  allow  entities  to  (1)  not  reassess  whether  existing  contracts  contain  leases,  (2)
carryforward the existing lease classification, and (3) not reassess initial direct costs associated with existing leases,

an implementation expedient which allows the requirements of the standard in the period of adoption with no restatement of prior periods, and

a  land  easement  expedient  which  allows  entities  to  not  evaluate  land  easements  under  the  new  standard  at  adoption  if  they  were  not  previously
accounted for as leases.

The Registrants have assessed the lease standard and executed a detailed implementation plan in preparation for adoption, which included the following key
activities:

•

•

•

•

Developed a complete lease inventory and abstracted the required data attributes into a lease accounting system that supports the Registrants' lease
portfolios and integrates with existing systems.

Evaluated the transition practical expedients available under the standard.

Identified, assessed and documented technical accounting issues, policy considerations and financial reporting implications.

Identified and implemented changes to processes and controls to ensure all impacts of the new standard are effectively addressed.

The adoption of the new standard is expected to result in right of use assets and lease obligations for operating leases recorded in the Registrants’ Consolidated
Balance Sheets on January 1, 2019 of approximately:

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

ROU Assets
Lease Liabilities

Exelon

Generation

ComEd

PECO

$1,400-$1,500
$1,600-$1,700

$1,000-$1,100
$1,200-$1,300

$5-$10
$5-$10

$1-$5
$1-$5

BGE

$100-$120
$100-$120

PHI

Pepco

DPL

ACE

$250-$270
$300-$320

$60-$65
$60-$65

$70-$75
$75-$80

$20-$25
$20-$25

The impact of adopting the new standard on retained earnings as of January 1, 2019 is expected to be immaterial.

New  Accounting  Standards  Issued  and  Not  Yet  Adopted  as  of  December  31,  2018:  The  following  new  authoritative  accounting  guidance  issued  by  the
FASB  has  not  yet  been  adopted  and  reflected  by  the  Registrants  in  their  consolidated  financial  statements  as  of  December  31,  2018.  Unless  otherwise
indicated,  the  Registrants  are  currently  assessing  the  impacts  such  guidance  may  have  (which  could  be  material)  in  their  Consolidated  Balance  Sheets,
Consolidated Statements of Operations and Comprehensive Income, Consolidated Statements of Cash Flows and disclosures, as well as the potential to early
adopt where applicable. The Registrants have assessed other FASB issuances of new standards which are not listed below given the current expectation that
such standards will not significantly impact the Registrants' financial reporting.

Goodwill Impairment (Issued January 2017). Simplifies the accounting for goodwill impairment by removing Step 2 of the current test, which requires calculation
of a hypothetical purchase price allocation. Under the revised guidance, goodwill impairment will be measured as the amount by which a reporting unit’s carrying
value exceeds its fair value, not to exceed the carrying amount of goodwill (currently Step 1 of the two-step impairment test). Entities will continue to have the
option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. Exelon, Generation, ComEd, PHI and DPL have goodwill
as of December 31, 2018. This updated guidance is not currently expected to impact the Registrants’ financial reporting. The standard is effective January 1,
2020, with early adoption permitted, and must be applied on a prospective basis.

Impairment  of  Financial  Instruments  (Issued  June  2016).  Provides  for  a  new  Current  Expected  Credit  Loss  (CECL)  impairment  model  for  specified  financial
instruments including loans, trade receivables, debt securities classified as held-to-maturity investments and net investments in leases recognized by a lessor.
Under  the  new  guidance,  on  initial  recognition  and  at  each  reporting  period,  an  entity  is  required  to  recognize  an  allowance  that  reflects  the  entity’s  current
estimate  of  credit  losses  expected  to  be  incurred  over  the  life  of  the  financial  instrument.  The  standard  does  not  make  changes  to  the  existing  impairment
models for non-financial assets such as fixed assets, intangibles and goodwill. The standard will be effective January 1, 2020 (with early adoption as of January
1, 2019 permitted) and requires a modified retrospective transition approach through a cumulative-effect adjustment to retained earnings as of the beginning of
the period of adoption. The Registrants are currently assessing the impacts of this standard.

2. Variable Interest Entities (All Registrants)

A VIE is a legal entity that possesses any of the following characteristics: an insufficient amount of equity at risk to finance its activities, equity owners who do
not have the power to direct the significant activities of the entity (or have voting rights that are disproportionate to their ownership interest), or equity owners
who  do  not  have  the  obligation  to  absorb  expected  losses  or  the  right  to  receive  the  expected  residual  returns  of  the  entity.  Companies  are  required  to
consolidate a VIE if they are its primary beneficiary, which is the enterprise that has the power to direct the activities that most significantly affect the entity’s
economic performance.

At December 31, 2018 and 2017 , Exelon, Generation, PHI and ACE collectively consolidated five VIEs or VIE groups for which the applicable Registrant was
the  primary  beneficiary  (see  Consolidated  Variable  Interest  Entities  below).  As  of  December  31,  2018  and  2017  ,  Exelon  and  Generation  collectively  had
significant interests in seven other VIEs for which the applicable Registrant does not have the power to direct the entities’ activities and, accordingly, was not the
primary beneficiary (see Unconsolidated Variable Interest Entities below).

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Consolidated Variable Interest Entities

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  carrying  amounts  and  classification  of  the  consolidated  VIEs’  assets  and  liabilities  included  in  the  Registrants'  consolidated  financial  statements  at
December 31, 2018 and 2017 are as follows:

Current assets

Noncurrent assets

Total assets

Current liabilities

Noncurrent liabilities

Total liabilities

Current assets

Noncurrent assets

Total assets

Current liabilities

Noncurrent liabilities

Total liabilities

$

$

$

$

$

$

$

$

December 31, 2018

Exelon (a)

Generation

PHI (a)

ACE

938

$

931

$

9,071

9,045

7

26

9,976

$

33

$

10,009

274

$

$

252

$

22

47

3,280

3,233

3,554

$

3,485

$

69

$

December 31, 2017

Exelon (a)

Generation

PHI (a)

ACE

662

$

652

$

10

$

9,317

9,286

31

9,979

308

$

$

9,938

$

41

$

272

$

36

$

3,316

3,250

66

3,624

$

3,522

$

102

$

4

19

23

19

40

59

6

23

29

32

58

90

__________
(a)

Includes certain purchase accounting adjustments not pushed down to the ACE standalone entity.

Except as specifically noted below, the assets in the table above are restricted for settlement of the VIE obligations and the liabilities in the table can only be
settled using VIE resources.

As of December 31, 2018 and 2017 , Exelon's and Generation's consolidated VIEs consist of:

Investments in Other Energy Related Companies

During 2015, Generation sold 69% of its equity interest in a company to a tax equity investor. The company holds an equity method investment in a distributed
energy company that is an unconsolidated VIE (see unconsolidated VIE section for additional details). Generation and the tax equity investor contributed a total
of $227 million of equity in proportion to their ownership interests to the company. The company meets the definition of a VIE because it has a similar structure
to a limited partnership and the limited partners do not have kick-out rights with respect to the general partner. Generation is the primary beneficiary because

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Generation manages the day-to-day activities of the entity.

During the fourth quarter of 2017 Generation acquired a controlling financial interest in an energy development company. The company is in the development
stage and requires additional subordinated financial support from the equity holders to fund activities. Generation is the majority owner with a 62% equity interest
and has the power to direct the activities that most significantly affect the economic performance of the company.

Renewable Energy Project Companies

In July 2017, Generation sold a 49% interest in EGRP to an outside investor for $400 million of cash plus immaterial working capital and other customary post-
closing adjustments. EGRP meets the definition of a VIE because the EGRP has a similar structure to a limited partnership and the limited partners do not have
kick  out  rights  with  respect  to  the  general  partner.  Generation  is  the  primary  beneficiary  because  Generation  manages  the  day-to-day  activities  of  the  entity;
therefore, Generation will continue to consolidate EGRP. EGRP is a collection of wind and solar project entities and some of these project entities are VIEs that
are consolidated by EGRP. The details relating to these VIEs are discussed below.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation owns a number of limited liability companies that build, own, and operate solar and wind power facilities some of which are owned by EGRP. While
Generation or EGRP owns 100% of the solar entities and 100% of the majority of the wind entities, it has been determined that certain of the solar and wind
entities are VIEs because the entities require additional subordinated financial support in the form of a parental guarantee of debt, loans from the customers in
order to obtain the necessary funds for construction of the solar facilities, or the customers absorb price variability from the entities through the fixed price power
and/or REC purchase agreements. Generation is the primary beneficiary of these solar and wind entities that qualify as VIEs because Generation controls the
design,  construction,  and  operation  of the facilities. Generation  provides operating  and capital funding  to the  solar and  wind entities  for ongoing  construction,
operations and maintenance and there is limited recourse related to Generation related to certain solar and wind entities.

While Generation or EGRP owns 100% of the majority of the wind entities, four of the projects have noncontrolling equity interests of 1% held by third parties
and  one  of  the  projects  has  noncontrolling  equity  interests  related  to  its  Class  B  Membership  Interest  (see  additional  details  below).  The  entities  with
noncontrolling equity interests of 1% held by third parties meet the definition of a VIE because the entities have noncontrolling equity interest holders that absorb
variability  from  the  wind  projects.  Generation’s  or  the  EGRP's  current  economic  interests  in  three  of  these  projects  is  significantly  greater  than  its  stated
contractual  governance  rights  and  all  of  these  projects  have  reversionary  interest  provisions  that  provide  the  noncontrolling  interest  holder  with  a  purchase
option, certain of which are considered bargain purchase prices, which, if exercised, transfers ownership of the projects to the noncontrolling interest holder upon
either the passage of time or the achievement of targeted financial returns. The ownership agreements with the noncontrolling interests state that Generation or
EGRP  are  to  provide  financial  support  to  the  projects  in  proportion  to  its  current  99% economic  interests  in  the  projects.  Generation  provides  operating  and
capital funding to the wind project entities for ongoing construction, operations and maintenance and there is limited recourse to Generation related to certain
wind  project  entities.  However,  no  additional  support  to  these  projects  beyond  what  was  contractually  required  has  been  provided.  Generation  is  the  primary
beneficiary of these wind entities because Generation controls the design, construction, and operation of the facilities.

In December 2016, Generation sold 100% of the Class B Membership Interests to a tax equity investor and retained 100% of the Class A Membership Interests
of its equity interest in one of its wind entities that was previously consolidated under the voting interest model and was subsequently contributed to EGRP in
2017. The wind entity meets the definition of a VIE because the company has a similar structure to a limited partnership and the limited partners do not have
kick-out rights with respect to the general partner. While Generation is the minority interest holder, Generation is the primary beneficiary, because Generation
manages the day-to-day activities of the entity. Therefore, the entity continues to be consolidated by Generation.

In 2017, Generation’s interests in EGRP were contributed to and are pledged for the ExGen Renewables IV non-recourse debt project financing structure. Refer
to Note 13 — Debt and Credit Agreements for additional information on ExGen Renewables IV and ITEM 2. PROPERTIES for additional details on the specific
projects included within EGRP.

Retail Power and Gas Companies

In March 2014, Generation began consolidating retail power and gas VIEs for which Generation is the primary beneficiary as a result of energy supply contracts
that give Generation the power to direct the activities that most significantly affect the economic performance of the entities. Generation does not have an equity
ownership interest in these entities, but provides approximately $34 million in credit support for the retail power and gas companies for which Generation is the
sole supplier of energy. These entities are included in Generation’s consolidated financial statements, and the consolidation of the VIEs do not have a material
impact on Generation’s financial results or financial condition.

CENG

CENG  is  a  joint  venture  between  Generation  and  EDF.  On  April  1,  2014,  Generation,  CENG,  and  subsidiaries  of  CENG  executed  the  Nuclear  Operating
Services Agreement (NOSA) pursuant to which Generation now conducts all activities associated with the operations of the CENG fleet and provides corporate
and administrative services to CENG and the CENG fleet for the remaining life of the CENG nuclear plants as if they were a part of the Generation nuclear fleet,
subject  to  the  CENG  member  rights  of  EDF.  As  a  result  of  executing  the  NOSA,  CENG  qualifies  as  a  VIE  due  to  the  disproportionate  relationship  between
Generation’s 50.01% equity ownership interest and its role in conducting the operational activities of CENG and the CENG fleet conveyed through the NOSA.
Further, since

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation  is conducting  the  operational  activities  of  CENG and  the  CENG fleet,  Generation  qualifies as  the  primary  beneficiary  of  CENG and,  therefore,  is
required to consolidate the results of operations and financial position of CENG.

Exelon and Generation, where indicated, provide the following support to CENG:

•

•

•

•

•

under  power  purchase  agreements  with  CENG,  Generation  purchased  or  will  purchase  50.01% of  the  available  output  generated  by  the  CENG
nuclear plants not subject to other contractual agreements from January 2015 through the end of the operating life of each respective plant. However,
pursuant to amendments dated March 31, 2015, the energy obligations under the Ginna Nuclear Power Plant (Ginna) PPAs were suspended during
the term of the RSSA, through the end of March 31, 2017. With the expiration of the RSSA, the PPA was reinstated beginning April 1, 2017. (see
Note 4 — Regulatory Matters for additional details),

Generation provided a $400 million loan to CENG. As of December 31, 2018 , the remaining obligation is $196 million , including accrued interest.
The remaining balance was fully paid by CENG in January 2019.

Generation executed an Indemnity Agreement pursuant to which Generation agreed to indemnify EDF against third-party claims that may arise from
any future nuclear incident (as defined in the Price-Anderson Act) in connection with the CENG nuclear plants or their operations. Exelon guarantees
Generation’s obligations under this Indemnity Agreement. (See Note 22 — Commitments and Contingencies for more details),

Generation and EDF share in the $688 million of contingent payment obligations for the payment of contingent retrospective premium adjustments for
the nuclear liability insurance, and

Exelon has executed an agreement to provide up to $245 million to support the operations of CENG as well as a $165 million guarantee of CENG’s
cash pooling agreement with its subsidiaries.

As of December 31, 2018 and 2017 , Exelon's, PHI's and ACE's consolidated VIE consists of:

ACE Transition Funding

A special purpose entity formed by ACE for the purpose of securitizing authorized portions of ACE’s recoverable stranded costs through the issuance and sale
of transition bonds. Proceeds from the sale of each series of transition bonds by ATF were transferred to ACE in exchange for the transfer by ACE to ATF of the
right  to collect  a non-bypassable  Transition  Bond  Charge  from ACE customers  pursuant  to bondable  stranded  costs  rate  orders  issued  by the  NJBPU in an
amount  sufficient  to  fund  the  principal  and  interest  payments  on  transition  bonds  and  related  taxes,  expenses  and  fees.  During  the  three  years  ended
December 31, 2018 , 2017 and 2016 , ACE transferred $30 million , $48 million and $60 million to ATF, respectively.

As of December 31, 2018 and 2017 , ComEd, PECO, BGE, Pepco and DPL do not have any material consolidated VIEs.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Assets and Liabilities of Consolidated VIEs

Included within the balances above are assets and liabilities of certain consolidated VIEs for which the assets can only be used to settle obligations of those
VIEs, and liabilities that creditors, or beneficiaries, do not have recourse to the general credit of the Registrants. As of  December 31, 2018 and 2017 , these
assets and liabilities primarily consisted of the following:

Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Inventory

Materials and supplies

Other current assets

Total current assets

Property, plant and equipment, net

Nuclear decommissioning trust funds

Other noncurrent assets

Total noncurrent assets

Total assets

Long-term debt due within one year

Accounts payable

Accrued expenses

Unamortized energy contract liabilities

Other current liabilities

Total current liabilities

Long-term debt

Asset retirement obligations

Unamortized energy contract liabilities

Other noncurrent liabilities

Total noncurrent liabilities

Total liabilities

December 31, 2018

Exelon (a)

Generation

PHI (a)

ACE

414   $

66  

414   $

62  

—   $

4  

146  

23  

212  

52  

913

6,145  

2,351  

258  

8,754

146  

23  

212  

49  

906

6,145  

2,351  

232  

8,728

9,667

$

9,634

$

—  

—  

—  

3  

7

—  

—  

26  

26

33

$

87   $

66   $

21   $

$

$

$

96  

72  

15  

3  

273

1,072  

2,160  

1  

42  

3,275

96  

72  

15  

3  

252

1,025  

2,160  

1  

42  

3,228

$

3,548

$

3,480

$

—  

1  

—  

—  

22

47  

—  

—  

—  

47

69

$

—

4

—

—

—

—

4

—

—

19

19

23

18

—

1

—

—

19

40

—

—

—

40

59

__________
(a)

Includes certain purchase accounting adjustments not pushed down to the ACE standalone entity.

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Cash and cash equivalents

Restricted cash and cash equivalents

Accounts receivable, net

Customer

Other

Inventory

Materials and supplies

Other current assets

Total current assets

Property, plant and equipment, net

Nuclear decommissioning trust funds

Other noncurrent assets

Total noncurrent assets

Total assets

Long-term debt due within one year

Accounts payable

Accrued expenses

Unamortized energy contract liabilities

Other current liabilities

Total current liabilities

Long-term debt

Asset retirement obligations

Other noncurrent liabilities

Total noncurrent liabilities

Total liabilities

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

$

$

$

December 31, 2017

Exelon (a)

Generation

PHI (a)

ACE

126   $

64  

126   $

58  

—   $

6  

170  

25  

205  

45  

635  

6,186  

2,502  

274  

8,962  

170  

25  

205  

41  

625  

6,186  

2,502  

243  

8,931  

—  

—  

—  

4  

10  

—  

—  

31  

31  

9,597   $

9,556   $

41   $

102   $

114  

67  

18  

7  

308  

1,154  

2,035  

121  

3,310  

67   $

114  

66  

18  

7  

272  

1,088  

2,035  

121  

3,244  

35   $

—  

1  

—  

—  

36  

66  

—  

—  

66  

$

3,618   $

3,516   $

102   $

—

6

—

—

—

—

6

—

—

23

23

29

31

—

1

—

—

32

58

—

—

58

90

__________
(a)

Includes certain purchase accounting adjustments not pushed down to the ACE standalone entity.

Unconsolidated Variable Interest Entities

Exelon’s and Generation’s variable interests in unconsolidated VIEs generally include equity investments and energy purchase and sale contracts. For the equity
investments,  the  carrying  amount  of  the  investments  is  reflected  in  Exelon’s  and  Generation’s  Consolidated  Balance  Sheets  in  Investments.  For  the  energy
purchase and sale contracts (commercial agreements), the carrying amount of assets and liabilities in Exelon’s and Generation’s Consolidated Balance Sheets
that relate to their involvement with the VIEs are predominately related to working capital accounts and generally represent the amounts owed by, or owed to,
Exelon and Generation for the deliveries associated with the current billing cycles under the commercial agreements. Further, Exelon and Generation have not
provided material debt or equity support, liquidity arrangements or performance guarantees associated with these commercial agreements.

As of December 31, 2018 and 2017 , Exelon and Generation had significant unconsolidated variable interests in seven VIEs for which Exelon or Generation, as
applicable,  was  not  the  primary  beneficiary.  These  interests  include  certain  equity  method  investments  and  certain  commercial  agreements.  Exelon  and
Generation  only  include  unconsolidated  VIEs  that  are  individually  material  in  the  tables  below.  However,  Exelon  and  Generation  have  several  individually
immaterial VIEs that in aggregate represent a total investment of $15 million and $13 million , respectively,

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

as of December 31, 2018 . These immaterial VIEs are equity and debt securities in energy development companies. As of December 31, 2018 , the maximum
exposure to loss related to these securities included in Investments in Exelon's and Generation's Consolidated Balance Sheets is limited to the $15 million and
$13 million , respectively.

The following tables present summary information about Exelon and Generation’s significant unconsolidated VIE entities:

December 31, 2018

$

Total assets (a)

Total liabilities (a)

Exelon's ownership interest in VIE (a)

Other ownership interests in VIE (a)

Registrants’ maximum exposure to loss:

Carrying amount of equity method investments

Contract intangible asset

Net assets pledged for Zion Station decommissioning (b)

Commercial
Agreement
VIEs

Equity
Investment
VIEs

597   $

37  

—  

560  

—  

7  

—  

Total

472   $

1,069

222  

223  

27  

223  

—  

—  

259

223

587

223

7

—

December 31, 2017

Commercial
Agreement
VIEs

Equity
Investment
VIEs

Total

$

625   $

509   $

1,134

Total assets (a)

Total liabilities (a)

Exelon's ownership interest in VIE (a)

Other ownership interests in VIE (a)

Registrants’ maximum exposure to loss:

Carrying amount of equity method investments

Contract intangible asset

Net assets pledged for Zion Station
decommissioning (b)

37  

—  

588  

—  

8  

2  

228  

251  

30  

251  

—  

—  

265

251

618

251

8

2

__________
(a) These items represent amounts on the unconsolidated  VIE balance sheets, not in Exelon’s or Generation’s Consolidated Balance Sheets. These items are included to

provide information regarding the relative size of the unconsolidated VIEs.

(b) These items represent amounts in Exelon’s and Generation’s Consolidated Balance Sheets related to the asset sale agreement with ZionSolutions, LLC. The net assets
pledged for Zion Station decommissioning includes gross pledged assets of $9 million and $39 million as of December 31, 2018 and December 31, 2017 , respectively;
offset by payables to ZionSolutions LLC of $9 million and $37 million as of December 31, 2018 and December 31, 2017 , respectively. These items are included to provide
information regarding the relative size of the ZionSolutions, LLC unconsolidated VIE.

For each of the unconsolidated VIEs, Exelon and Generation have assessed the risk of a loss equal to their maximum exposure to be remote and, accordingly,
Exelon  and  Generation  have  not  recognized  a  liability  associated  with  any  portion  of  the  maximum  exposure  to  loss.  In  addition,  there  are  no  material
agreements with, or commitments by, third parties that would materially affect the fair value or risk of their variable interests in these VIEs.

As of December 31, 2018 and 2017 , Exelon's and Generation's unconsolidated VIEs consist of:

Energy Purchase and Sale Agreements

Generation  has  several  energy  purchase  and  sale  agreements  with  generating  facilities.  Generation  has  evaluated  the  significant  agreements,  ownership
structures and risks of each entity, and determined that certain of the entities are VIEs because the entity absorbs risk through the sale of fixed price power and
renewable energy credits. Generation has reviewed the entities and has determined that Generation is not the primary beneficiary of the VIEs

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

because Generation does not have the power to direct the activities that most significantly impact the VIEs economic performance.

ZionSolutions

Generation has an asset sale agreement with EnergySolutions, Inc. and certain of its subsidiaries, including ZionSolutions, LLC (ZionSolutions), which is further
discussed  in  Note  15  —  Asset  Retirement  Obligations  .  Under  this  agreement,  ZionSolutions  can  put  the  assets  and  liabilities  back  to  Generation  when
decommissioning activities under the asset sale agreement are complete. Generation has evaluated this agreement and determined that, through the put option,
it has a variable interest in ZionSolutions but is not the primary beneficiary. As a result, Generation has concluded that consolidation is not required. Other than
the  asset  sale  agreement,  Exelon  and  Generation  do  not  have  any  contractual  or  other  obligations  to  provide  additional  financial  support  and  ZionSolutions’
creditors do not have any recourse to Exelon’s or Generation’s general credit.

Investment in Distributed Energy Companies

In  July  2014,  Generation  entered  into  an  arrangement  to  purchase  a  90%  equity  interest  and  90%  of  the  tax  attributes  of  a  distributed  energy  company.
Generation contributed a total $85 million of equity. The distributed energy company meets the definition of a VIE because the company has a similar structure
to  a  limited  partnership  and  the  limited  partners  do  not  have  kick-out  rights  of  the  general  partner.  Generation  is  not  the  primary  beneficiary;  therefore,  the
investment continues to be recorded using the equity method.

During  2015,  a  company  that  is  consolidated  by  Generation  as  a  VIE  entered  into  an  arrangement  to  purchase  a  90% equity  interest  and  99% of  the  tax
attributes  of  another  distributed  energy  company  (see  additional  details  in  the  Consolidated  Variable  Interest  Entities  section  above).  The  equity  holders  (of
which Generation  is one)  contributed  to the distributed  energy  company  a total  of $227 million of equity in proportion to their ownership interests. The equity
holders provided a parental guarantee of up to $275 million in support of equity contributions to the distributed energy company. As all equity contributions were
made as of the first quarter of 2017, there is no further payment obligation under the parental guarantee. The distributed energy company meets the definition of
a VIE because the company has a similar structure to a limited partnership and the limited partners do not have kick-out rights of the general partner. Generation
is not the primary beneficiary; therefore, the investment is recorded using the equity method.

Both distributed energy companies from the 2015 and 2014 arrangements are considered related parties to Generation.

ComEd and PECO

The  financing  trust  of  ComEd,  ComEd  Financing  III,  and  the  financing  trusts  of  PECO,  PECO Trust  III  and  PECO  Trust  IV,  are  not  consolidated  in Exelon’s,
ComEd’s, or PECO’s financial statements. These financing trusts were created to issue mandatorily redeemable trust preferred securities. ComEd and PECO
have concluded that they do not have a significant variable interest in ComEd Financing III, PECO Trust III, or PECO Trust IV as each Registrant financed its
equity  interest  in  the  financing  trusts  through  the  issuance  of  subordinated  debt  and,  therefore,  has  no  equity  at  risk.  See  Note  13  —  Debt  and  Credit
Agreements for additional information.

3. Revenue from Contracts with Customers (All Registrants)

The Registrants recognize revenue from contracts with customers to depict the transfer of goods or services to customers at an amount that the entities expect
to be entitled to in exchange for those goods or services. Generation’s primary sources of revenue include competitive sales of power, natural gas, and other
energy-related  products  and  services.  The  Utility  Registrants’  primary  sources  of  revenue  include  regulated  electric  and  gas  tariff  sales,  distribution  and
transmission services. The performance obligations associated with these sources of revenue are further discussed below.

Unless otherwise noted, for each of the significant revenue categories and related performance obligations described below, the Registrants have the right to
consideration  from  the  customer  in  an  amount  that  corresponds  directly  with  the  value  transferred  to  the  customer  for  the  performance  completed  to  date.
Therefore, the Registrant's have elected to use the right to invoice practical expedient for the contracts within these revenue categories and generally

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

recognize  revenue  in  the  amount  for  which  they  have  the  right  to  invoice  the  customer.  As  a  result,  there  are  generally  no  significant  judgments  used  in
determining or allocating the transaction price.

Competitive Power Sales (Exelon and Generation)

Generation sells power and other energy-related commodities to both wholesale and retail customers across multiple geographic regions through its customer-
facing business, Constellation. Power sale contracts generally contain various performance obligations including the delivery of power and other energy-related
commodities  such  as  capacity,  ZECs,  RECs  or  other  ancillary  services.  Certain  performance  obligations  such  as  power  and  capacity  are  generally  delivered
over time whereas other performance obligations such as RECs and ZECs are generally delivered at a point in time. In either case, revenues related to all of the
performance  obligations  in  such  bundled  power  sale  contracts  are  generally  recognized  concurrently  as  the  power  is  generated.  Except  as  noted  in  the
paragraph below, there are no significant judgments in allocating the transaction price since all performance obligations are satisfied simultaneously upon the
generation of power. Payment terms generally require that the customers pay for the power or the energy-related commodity within the month following delivery
to the customer and there are generally no significant financing components.

Certain contracts may contain limits on the total amount of revenue we are able to collect over the entire term of the contract. In such cases, the Registrants
estimate  the  total  consideration  expected  to  be  received  over  the  term  of  the  contract  net  of  the  constraint  and  allocate  the  expected  consideration  to  the
performance obligations in the contract such that revenue is recognized ratably over the term of the entire contract as the performance obligations are satisfied.

Competitive Natural Gas Sales (Exelon and Generation)

Generation sells natural gas on a full requirements basis or for an agreed upon volume to both commercial and residential customers. The primary performance
obligation  associated  with  natural  gas  sale  contracts  is  the  delivery  of  the  natural  gas  to  the  customer.  Revenues  related  to  the  sale  of  natural  gas  are
recognized  over  time  as  the  natural  gas  is  delivered  to  and  consumed  by  the  customer.  Payment  from  customers  is  typically  due  within  the  month  following
delivery of the natural gas to the customer and there are generally no significant financing components.

Other Competitive Products and Services (Exelon and Generation)

Generation  also  sells  other  energy-related  products  and  services  such  as  long-term  construction  and  installation  of  energy  efficiency  assets  and  new  power
generating  facilities,  primarily  to  commercial  and  industrial  customers.  These  contracts  generally  contain  a  single  performance  obligation,  which  is  the
construction  and/or  installation  of  the  asset  for  the  customer.  The  average  contract  term  for  these  projects  is  approximately  18  months.  Revenues,  and
associated costs, are recognized throughout the contract term using an input method to measure progress towards completion. The method recognizes revenue
based on the various inputs used to satisfy the performance obligation, such as costs incurred and total labor hours expended. The total amount of revenue that
will be recognized is based on the agreed upon contractually-stated amount. Payments from customers are typically due within 30 or 45 days from the date the
invoice is generated and sent to the customer.

Regulated Electric and Gas Tariff Sales (Exelon and the Utility Registrants)

The  Utility  Registrants  sell  electricity  and  electricity  distribution  services  to  residential,  commercial,  industrial  and  governmental  customers  through  regulated
tariff rates approved by their state regulatory commissions. PECO, BGE and DPL also sell natural gas and gas distribution services to residential, commercial,
and industrial customers through regulated tariff rates approved by their state regulatory commissions. The performance obligation associated with these tariff
sale contracts is the delivery of electricity and/or natural gas. Tariff sales are generally considered daily contracts given that customers can discontinue service
at any time. Revenues are generally recognized over time (each day) as the electricity and/or natural gas is delivered to customers. Payment terms generally
require  that  customers  pay  for  the  services  within  the  month  following  delivery  of  the  electricity  or  natural  gas  to  the  customer  and  there  are  generally  no
significant financing components or variable consideration.

Electric and natural gas utility customers have the choice to purchase electricity or natural gas from competitive electric generation and natural gas suppliers.
While  the  Utility  Registrants  are  required  under  state  legislation  to  bill  their  customers  for  the  supply  and  distribution  of  electricity  and/or  natural  gas,  they
recognize revenue related only to the distribution services when customers purchase their electricity or natural gas from competitive suppliers.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Regulated Transmission Services (Exelon and the Utility Registrants)

Under  FERC’s  open  access  transmission  policy,  the  Utility  Registrants,  as  owners  of  transmission  facilities,  are  required  to  provide  open  access  to  their
transmission  facilities  under  filed  tariffs  at  cost-based  rates  approved  by  FERC.  The  Utility  Registrants  are  members  of  PJM,  the  regional  transmission
organization designated by FERC to coordinate the movement of wholesale electricity in PJM’s region, which includes portions of the mid-Atlantic and Midwest.
In accordance with FERC-approved rules, the Utility Registrants and other transmission owners in the PJM region make their transmission facilities available to
PJM,  which  directs  and  controls  the  operation  of  these  transmission  facilities  and  accordingly  compensates  the  Utility  Registrants  and  other  transmission
owners. The performance obligations associated with the Utility Registrants’ contract with PJM include (i) Network Integration Transmission Services (NITS), (ii)
scheduling,  system  control  and  dispatch  services,  and  (iii)  access  to  the  wholesale  grid.  These  performance  obligations  are  satisfied  over  time,  and  Utility
Registrants utilize output methods to measure the progress towards their completion. Passage of time is used for NITS and access to the wholesale grid and
MWhs of energy  transported  over the wholesale grid is used for scheduling, system control and  dispatch services. PJM pays the Utility Registrants for these
services on a weekly basis and there are no financing components or variable consideration.

Costs to Obtain or Fulfill a Contract with a Customer (Exelon and Generation)

Generation incurs incremental costs in order to execute certain retail power and gas sales contracts. These costs primarily relate to retail broker fees and sales
commissions.  Generation  has  capitalized  such  contract  acquisition  costs  in  the  amount  of  $32  million  and  $26  million  as  of  December  31,  2018  and
December  31,  2017  ,  respectively,  within  Other  current  assets  and  Other  deferred  debits  in  Exelon’s  and  Generation’s  Consolidated  Balance  Sheets.  These
costs  are  capitalized  when  incurred  and  amortized  using  the  straight-line  method  over  the  average  length  of  such  retail  contracts,  which  is  approximately  2
years. Exelon and Generation recognized amortization expense associated with these costs in the amount of $22 million and $30 million for the twelve months
ended December  31,  2018  ,  and  December  31,  2017  ,  respectively,  within  Operating  and  maintenance  expense  in  Exelon’s  and  Generation’s  Consolidated
Statements  of  Operations  and  Comprehensive  Income.  Generation  does  not  incur  material  costs  to  fulfill  contracts  with  customers  that  are  not  already
capitalized under existing guidance. In addition, the Utility Registrants do not incur any material costs to obtain or fulfill contracts with customers.

Contract Balances (All Registrants)

Contract Assets

Generation  records  contract  assets  for  the  revenue  recognized  on  the  construction  and  installation  of  energy  efficiency  assets  and  new  power  generating
facilities  before  Generation  has  an  unconditional  right  to  bill  for  and  receive  the  consideration  from  the  customer.  These  contract  assets  are  subsequently
reclassified to receivables when the right to payment becomes unconditional. Generation records contract assets and contract receivables within Other current
assets and Accounts receivable, net - Customer, respectively, within Exelon’s and Generation’s Consolidated  Balance Sheets. The following table provides a
rollforward of the contract assets reflected in Exelon's and Generation's Consolidated Balance Sheets from January 1, 2018 to December 31, 2018 :

Contract Assets

Balance as of January 1, 2018

Increases as a result of changes in the estimate of the stage of completion

Amounts reclassified to receivables

Balance at December 31, 2018

The Utility Registrants do not have any contract assets.

281

Exelon and Generation

283

50

(146)

187

  $

  $

 
 
 
Table of Contents

Contract Liabilities

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation  records  contract  liabilities  when  consideration  is  received  or  due  prior  to  the  satisfaction  of  the  performance  obligations.  These  contract  liabilities
primarily relate to upfront consideration received or due for equipment service plans, solar panel leases and the Illinois ZEC program that introduces a cap on
the total consideration to be received by Generation. The Generation contract liability related to the Illinois ZEC program includes certain amounts with ComEd
that are eliminated in consolidation in Exelon’s Consolidated Statements of Operations and Consolidated Balance Sheets.  Generation records contract liabilities
within  Other  current  liabilities  and  Other  noncurrent  liabilities  within  Exelon’s  and  Generation’s  Consolidated  Balance  Sheets.  The  following  table  provides  a
rollforward of the contract liabilities reflected in Exelon's and Generation's Consolidated Balance Sheet from January 1, 2018 to December 31, 2018 :

Contract Liabilities

Balance as of January 1, 2018

Increases as a result of additional cash received or due

Amounts recognized into revenues

Balance at December 31, 2018

Exelon

Generation

$

$

35   $

179  

(187)  

27   $

35

465

(458)

42

The Utility Registrants also record contract liabilities when consideration is received prior to the satisfaction of the performance obligations. As of December 31,
2018 and December 31, 2017 , the Utility Registrants' contract liabilities were immaterial.

Transaction Price Allocated to Remaining Performance Obligations (All Registrants)

The  following  table  shows  the  amounts  of  future  revenues  expected  to  be  recorded  in  each  year  for  performance  obligations  that  are  unsatisfied  or  partially
unsatisfied  as  of  December  31,  2018  .  Generation  has  elected  the  exemption  which  permits  the  exclusion  from  this  disclosure  of  certain  variable  contract
consideration. As such, the majority of Generation’s power and gas sales contracts are excluded from this disclosure as they contain variable volumes and/or
variable  pricing.  Thus,  this  disclosure  only  includes  contracts  for  which  the  total  consideration  is  fixed  and  determinable  at  contract  inception.  The  average
contract term varies by customer type and commodity but ranges from one month to several years.

The majority of the Utility Registrants’ tariff sale contracts are generally day-to-day contracts and, therefore, do not contain any future, unsatisfied performance
obligations  to  be  included  in  this  disclosure.  Further,  the  Utility  Registrants  have  elected  the  exemption  to  not  disclose  the  transaction  price  allocation  to
remaining  performance  obligations  for  contracts  with  an  original  expected  duration  of  one  year  or  less.  As  such,  gas  and  electric  tariff  sales  contracts  and
transmission revenue contracts are excluded from this disclosure.

Exelon

Generation

Revenue Disaggregation (All Registrants)

2019

2020

2021

2022

2023 and
thereafter

$

631   $

631  

329   $

329  

119   $

119  

47   $

47  

138   $

138  

Total

1,264

1,264

The Registrants disaggregate revenue recognized from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of
revenue and cash flows are affected by economic factors. See Note 24 — Segment Information for the presentation of the Registrant's revenue disaggregation.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

4.   Regulatory Matters (All Registrants)

The following matters below discuss the status of material regulatory and legislative proceedings of the Registrants.

Utility Regulatory Matters (Exelon and the Utility Registrants)

Distribution Base Rate Case Proceedings

The following tables show the completed and pending distribution base rate case proceedings in 2018.

Completed Distribution Base Rate Case Proceedings

Registrant/Jurisdiction

Filing Date

Requested Revenue
Requirement Increase
(Decrease)

Approved Revenue
Requirement Increase
(Decrease)

Approved ROE

Approval Date

Rate Effective Date

ComEd - Illinois (Electric) (b)
PECO - Pennsylvania (Electric) (c) March 29, 2018 $

April 16, 2018 $

(23)

(a)   $
82 (a)   $

(24)

(a)  
25 (a)  

8.69%

December 4, 2018

January 1, 2019

N/A

December 20, 2018

January 1, 2019

June 8, 2018
(amended
August 24,
2018 and
October 12,
2018)

January 2, 2018
(amended
February 5,
2018)

December 19,
2017 (amended
February 9,
2018)

July 14, 2017
(amended
November 16,
2017)

August 17,
2017 (amended
February 9,
2018)

$

$

$

$

$

BGE - Maryland (Natural Gas)

Pepco - Maryland (Electric)

Pepco - District of Columbia
(Electric) (d)

DPL - Maryland (Electric) (e)

DPL - Delaware (Electric)

61  

$

43  

9.8%

January 4, 2019

January 4, 2019

3 (a)   $

(15)

(a)  

9.5%

May 31, 2018

June 1, 2018

66  

$

(24)

(a)  

9.525%

August 9, 2018

August 13, 2018

19  

$

13  

9.5%

February 9, 2018

February 9,
2018

12 (a)   $

(7)

(a)  

9.7%

August 21, 2018

March 17, 2018

August 17,
2017 (amended
February 9,
2018)

Includes the annual ongoing TCJA tax savings further discussed below.

DPL - Delaware (Natural Gas)
__________
(a)
(b) Pursuant  to  EIMA  and  FEJA,  ComEd’s  electric  distribution  rates  are  established  through  a  performance-based  formula,  which  sunsets  at  the  end  of  2022.  ComEd  is
required to file an annual update to its electric distribution formula rate on or before May 1 st , with resulting rates effective in January of the following year. ComEd’s annual
electric distribution formula rate update is based on prior year actual costs and current year projected capital additions (initial year revenue requirement). The update also
reconciles any differences between the revenue requirement in effect for the prior year and actual costs incurred from the year (annual reconciliation).

November 8, 2018

March 17, 2018

4 (a)   $

9.7%

(4)

$

(a)  

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

ComEd’s 2018 approved revenue requirement above reflects a decrease of  $58 million for the initial year revenue requirement for 2018 and an increase of  $34 million
related to the annual reconciliation for 2017. The revenue requirement for 2018 and the annual reconciliation for 2017 provides for a weighted average debt and equity
return on distribution rate base of 6.52% inclusive of an allowed ROE of 8.69% , reflecting the average rate on 30-year treasury notes plus 580 basis points. See table
below for ComEd's regulatory assets associated with its electric distribution formula rate.

During the first quarter of 2018, ComEd revised its electric distribution formula rate to implement revenue decoupling provisions provided for under FEJA. As a result of
this revision, ComEd’s electric distribution formula rate revenues are not impacted by abnormal weather, usage per customer or numbers of customers. ComEd began
reflecting the impacts of this change in its Operating revenues and electric distribution formula rate regulatory asset in the first quarter of 2017.

(c) The PECO base rate case proceeding was resolved through a settlement agreement, which did not specify an approved ROE.

(d) On September 7, 2018, Pepco submitted an updated filing for an increase of $4 million to the customer base rate credit established in connection with the merger between

Exelon and PHI for residential customers, representing the TCJA benefits for the period January 1, 2018 through August 12, 2018.

(e) The DPL Maryland base rate case proceeding was resolved through a settlement agreement, which did not specify an overall ROE. The settlement agreement included

an ROE of 9.5% solely for purposes of calculating AFUDC and regulatory asset carrying costs.

In the second quarter of 2018, DPL discovered a rate design issue in Maryland such that the current rates were not sufficient to collect the full amount of the $13 million
revenue increase agreed to by the parties in the recent settlement.  On September 5, 2018, the MDPSC approved DPL’s proposed revisions to resolve the rate design
issue on a prospective basis, effective September 5, 2018.

Pending Distribution Base Rate Case Proceedings

Registrant/Jurisdiction

Filing Date

Requested Revenue Requirement
Increase

Requested ROE

Expected Approval Timing

ACE - New Jersey (Electric)

August 21, 2018
(amended November 19,
2018)

$

122 (a)  
30  

10.1%

Third quarter of 2019 (b)

Pepco - Maryland (Electric)
__________
(a) Requested  increase is before New Jersey sales and use tax and includes  $40 million of higher depreciation  expense related to its updated depreciation  study and the

Third quarter of 2019

January 15, 2019

10.3%

$

annual ongoing TCJA tax savings further discussed below.

(b) ACE plans to put interim rates in effect on or around May 21, 2019, subject to refund, as allowed by the regulation.

Transmission Formula Rates

Transmission Formula Rate (Exelon, ComEd, BGE, PHI, Pepco, DPL and ACE).  ComEd’s, BGE’s, Pepco's, DPL's and ACE's transmission rates are each
established based on a FERC-approved formula. ComEd, BGE, Pepco, DPL and ACE are required to file an annual update to the FERC-approved formula on or
before May 15, with the resulting rates effective on June 1 of the same year. The annual formula rate update is based on prior year actual costs and current year
projected capital additions (initial year revenue requirement). The update also reconciles any differences between the revenue requirement in effect beginning
June 1 of the prior year and actual costs incurred for that year (annual reconciliation).

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For 2018, the following total increases/(decreases) were included in ComEd’s, BGE’s, Pepco's, DPL's and ACE's electric transmission formula rate filings:

Registrant

Initial Revenue
Requirement
(Decrease) Increase (b)

Annual Reconciliation
Increase/(Decrease)

Total Revenue
Requirement (Decrease)
Increase

Allowed Return on Rate
Base (d)

Allowed ROE (e)

ComEd (a)

BGE (a)

Pepco

DPL

$

(44) $

18

$

10

6

14

4

2

13

(26)
26 (c)  

8

27

8.32%

7.61%

7.82%

7.29%

11.50%

10.50%

10.50%

10.50%

ACE (a)
__________
(a) The time period for any formal challenges to the annual transmission formula rate update filings expired with no formal challenges submitted.
(b) The initial revenue requirement changes reflect the annual benefit of lower income tax rates effective January 1, 2018 resulting from the enactment of the TCJA of  $69
million , $18 million , $13 million , $12 million and $11 million for  ComEd,  BGE,  Pepco,  DPL  and  ACE,  respectively.  They  do  not  reflect  the  pass  back  or  recovery  of
income tax-related regulatory liabilities or assets, including those established upon enactment of the TCJA. See further discussion below.

10.50%

8.02%

(4)

—

4

(c) The change in BGE's transmission revenue requirement includes a FERC approved dedicated facilities charge of $12 million to recover the costs of providing transmission

service to specifically designated load by BGE.

(d) Represents the weighted average debt and equity return on transmission rate bases.
(e) As part of the FERC-approved settlement of ComEd’s 2007 transmission rate case, the rate of return on common equity is 11.50% , inclusive of a 50-basis-point incentive
adder for being a member of a RTO, and the common equity component of the ratio used to calculate the weighted average debt and equity return for the transmission
formula  rate  is  currently  capped  at  55% .  As  part  of  the  FERC-approved  settlement  of  the  ROE  complaint  against  BGE,  Pepco,  DPL  and  ACE,  the  rate  of  return  on
common equity is 10.50% , inclusive of a 50-basis-point incentive adder for being a member of a RTO.

Pending  Transmission  Formula  Rate (Exelon  and PECO). On May  1, 2017,  PECO filed  a request  with FERC  seeking  approval  to update  its transmission
rates and change the manner in which PECO’s transmission rate is determined from a fixed rate to a formula rate. The formula rate will be updated annually to
ensure that under this rate customers pay the actual costs of providing transmission services. The formula rate filing includes a requested increase of $22 million
to PECO’s annual transmission revenues and a requested rate of return on common equity of 11% , inclusive of a 50 basis point adder for being a member of a
regional  transmission  organization.  PECO  requested  that  the  new  transmission  rate  be  effective  as  of  July  2017.  On  June  27,  2017,  FERC  issued  an  Order
accepting  the  filing  and  suspending  the  proposed  rates  until  December  1,  2017,  subject  to  refund,  and  set  the  matter  for  hearing  and  settlement  judge
procedures. On May 4, 2018, the Chief Administrative Law Judge terminated settlement judge procedures and designated a new presiding judge. PECO cannot
predict the outcome of this proceeding, or the transmission formula FERC may approve.

On  May  11,  2018,  pursuant  to  the  transmission  formula  rate  request  discussed  above,  PECO  made  its  first  annual  formula  rate  update,  which  included  a
revenue decrease of $6 million. The revenue decrease of $6 million included an approximately $20 million reduction as a result of the tax savings associated
with the TCJA. The updated transmission rate was effective June 1, 2018, subject to refund.

Tax Cuts and Jobs Act

The Utility Registrants have made filings with their state regulatory commissions to pass back tax savings related to TCJA to their distribution customers, which
are detailed below. The tax savings include the benefit of lower federal income tax rates and the settlement of a portion of the deferred income tax regulatory
liabilities established upon the enactment of the TCJA. The ongoing annual TCJA tax savings in the table below represent the annual savings for distribution
customers reflected in the initial customers rates approved after the TCJA. Subsequent annual TCJA tax savings will be approved as part of the annual update
to the electric distribution formula rate for ComEd or base rate case proceedings for PECO, BGE, Pepco, DPL and ACE.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Registrant/Jurisdiction

Amount

Approval Date

Rate Effective Date

Stub Period

Approval Date

Refund Amount/Period

Ongoing TCJA Tax Savings

Stub Period Bill Credit from TCJA Tax Savings

ComEd - Illinois
(Electric)

PECO - Pennsylvania
(Electric)

PECO - Pennsylvania
(Natural Gas)

BGE - Maryland
(Electric)

BGE - Maryland (Natural
Gas)

Pepco - Maryland
(Electric)

Pepco - District of
Columbia (Electric)

DPL - Maryland
(Electric)

DPL - Delaware
(Electric)

DPL - Delaware (Natural
Gas)

$

$

$

$

$

$

$

$

$

$

201

January 18, 2018

February 1, 2018

Not applicable

71 December 20, 2018

January 1, 2019

January 1, 2018 -
December 31, 2018 December 20, 2018

$67 / 2019 (majority
in January)

4

(a)

July 1, 2018

Not applicable

72

January 31, 2018

February 1, 2018

January 1, 2018 -
January 31, 2018

January 1, 2018 -
January 31, 2018

To be addressed in next electric distribution
base rate case

31

January 31, 2018

February 1, 2018

January 4, 2019

$2 / Q1 2019

May 31, 2018

$10 / July 2018

31

May 31, 2018

June 1, 2018

January 1, 2018 -
June 1, 2018

January 1, 2018 -
August 12, 2018

39

August 9, 2018

August 13, 2018

September 7, 2018

January 1, 2018 -
March 31, 2018

14

April 18, 2018

April 20, 2018

April 18, 2018

$2 / June 2018

February 1, 2018 -
March 17, 2018

19

August 21, 2018

March 17, 2018

August 21, 2018

$3 / Q4 2018

7

November 8, 2018

March 17, 2018

November 8, 2018

$1 / Q4 2018

February 1, 2018 -
March 17, 2018

$20 / September
2018

ACE - New Jersey
(Electric)
__________
(a) On May 17, 2018, the PAPUC issued an order directing Pennsylvania utility companies without an existing base rate case, including PECO’s gas distribution business, to
start passing back the savings from January 1, 2018 onward through a negative surcharge mechanism to be effective on July 1, 2018. Pursuant to that order, PECO filed
a negative surcharge mechanism and began on July 1, 2018, to return the estimated annual 2018 tax savings above to its natural gas distribution customers.

September 8, 2018

August 29, 2018

August 29, 2018

$6 / Q4 2018

23

$

January 1, 2018 -
June 30, 2018

As discussed above, ComEd’s, BGE’s, Pepco’s, DPL’s and ACE’s transmission formula rates currently do not provide for the pass back or recovery of income
tax-related regulatory liabilities or assets, including those established upon enactment of the TCJA. On December 13, 2016 (as amended on March 13, 2017)
and  on  February  23,  2018  (as  amended  on  July  9,  2018),  BGE  and  ComEd,  Pepco,  DPL  and  ACE,  respectively,  each  filed  with  FERC  to  revise  their
transmission  formula  rate  mechanisms  to  provide  for  pass  back  and  recovery  of  transmission-related  income  tax-related  regulatory  liabilities  and  assets,
including those established upon enactment of the TCJA. See discussion below for additional information regarding these filings.

See Note 14 - Income Taxes for additional information on Corporate Tax Reform.

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Other State Regulatory Matters

Illinois Regulatory Matters

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Energy Efficiency Formula Rate (Exelon and ComEd). FEJA allows ComEd to defer energy efficiency costs (except for any voltage optimization costs which
are recovered through the electric distribution formula rate) as a separate regulatory asset that is recovered through the energy efficiency formula rate over the
weighted average useful life, as approved by the ICC, of the related energy efficiency measures. ComEd earns a return on the energy efficiency regulatory asset
at a rate equal to its weighted average cost of capital, which is based on a year-end capital structure and calculated using the same methodology applicable to
ComEd’s  electric  distribution  formula  rate.  Beginning  January  1,  2018  through  December  31,  2030,  the  return  on  equity  that  ComEd  earns  on  its  energy
efficiency regulatory asset is subject to a maximum downward or upward adjustment of 200 basis points if ComEd’s cumulative persisting annual MWh savings
falls short of or exceeds specified percentage benchmarks of its annual incremental savings goal. ComEd is required to file an update to its energy efficiency
formula rate on or before June 1 st each year, with resulting rates effective in January of the following year. The annual update is based on projected current year
energy  efficiency  costs,  PJM  capacity  revenues,  and  the  projected  year-end  regulatory  asset  balance  less  any  related  deferred  income  taxes  (initial  year
revenue requirement). The update also reconciles any differences between the revenue requirement in effect for the prior year and actual costs incurred from
the year (annual reconciliation). The approved energy efficiency formula rate also provides for revenue decoupling provisions similar to those in ComEd’s electric
distribution formula rate.

During 2018, the ICC approved the following total increases in ComEd's requested energy efficiency revenue requirement:

Filing Date

June 1, 2018

$

Requested Revenue
Requirement Increase

Approved Revenue Requirement
Increase

Approved ROE

Approval Date

39 $

42 (a)  

8.69%

December 4, 2018

Rate Effective Date

January 1, 2019

_________
(a) ComEd’s 2018 approved revenue requirement above reflects an increase of $41 million for the initial year revenue requirement for 2018 and 2019 and an increase of $1
million related to the annual reconciliation for 2017. The revenue requirement for 2018 and 2019 and the annual reconciliation for 2017 provides for a weighted average
debt and equity return on distribution  rate base of  6.52% inclusive of an allowed ROE of  8.69% , reflecting  the average rate on 30-year treasury notes plus 580 basis
points. See table below for ComEd's regulatory assets associated with its energy efficiency formula rate.

Maryland Regulatory Matters

Cash  Working  Capital  Order  (Exelon  and  BGE).  On  November  17,  2016,  the  MDPSC  rendered  a  decision  in  the  proceeding  to  review  BGE’s  request  to
recover  its  cash  working  capital  (CWC)  requirement  for  its  Provider  of  Last  Resort  service,  also  known  as  Standard  Offer  Service  (SOS),  as  well  as  other
components  that  make  up  the  Administrative  Charge,  the  mechanism  that  enables  BGE  to  recover  its  SOS-related  costs.    The  Administrative  Charge  is
comprised  of  five  components:    CWC,  uncollectibles,  incremental  costs,  return,  and  an  administrative  adjustment,  which  acts  as  a  proxy  for  retail  suppliers’
costs.  The Commission accepted BGE's positions on recovery of CWC and pass-through recovery of BGE’s actual uncollectibles and incremental costs.  The
order also grants BGE a return on the SOS.  The Commission ruled that the level of the administrative adjustment will be determined in BGE’s next rate case.
Subsequently, the MDPSC Staff and residential consumer advocate sought clarification and appealed the amount of return awarded to BGE on the SOS. The
appeal currently resides with the Maryland Court of Special Appeals. BGE cannot predict the outcome of this appeal.

Smart  Meter  and  Smart  Grid  Investments  (Exelon  and  BGE).  In  August  2010,  the  MDPSC  approved  a  comprehensive  smart  grid  initiative  for  BGE  that
included the planned installation of 2 million residential and commercial electric and natural gas smart meters at an expected total cost of $480 million of which
$200 million  was  funded  by  SGIG.  The  MDPSC’s  approval  ordered  BGE  to  defer  the  associated  incremental  costs,  depreciation  and  amortization,  and  an
appropriate  return,  in  a  regulatory  asset  until  such  time  as  a  cost-effective  advanced  metering  system  is  implemented.  See  AMI  programs  in  the  Regulatory
Assets and Liabilities section below for additional information.

As part of the 2015 electric and natural gas distribution rate case filed on November 6, 2015, BGE sought recovery of its smart grid initiative costs, supported by
evidence demonstrating that BGE had, in fact, implemented a cost-

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(Dollars in millions, except per share data unless otherwise noted)

beneficial  advanced  metering  system.  On  June  3,  2016,  the  MDPSC  issued  an  order  concluding  that  the  smart  grid  initiative  overall  is  cost  beneficial  to  its
customers. However, the June 3 rd order contained several cost disallowances and adjustments including disallowances of certain program and meter installation
costs and denial of recovery of any return on unrecovered costs for non-AMI meters replaced under the program. BGE and the residential consumer advocate
subsequently both filed a petition for rehearing of the June 3 rd order. On July 29, 2016, the MDPSC issued an order on the petitions for rehearing that reversed
certain of its prior cost disallowances and adjustments related to the smart grid initiative.

As a combined result of the MDPSC orders in BGE's 2015 electric and natural gas distribution base rate case, BGE recorded a $52 million charge in June 2016
to Operating and maintenance expense in Exelon’s and BGE’s Consolidated Statements of Operations and Comprehensive Income reducing certain regulatory
assets and other long-lived assets and reclassified $56 million of legacy meter costs from Property, plant and equipment, net to Regulatory assets in Exelon's
and  BGE's  Consolidated  Balance  Sheets.  In  BGE’s  2018  natural  gas  distribution  base  rate  case,  the  MDPSC  allowed  BGE  to  recover  the  gas  portion  of  the
post-test year regulatory asset, including a return thereon, over three years.  The electric portion of the same regulatory asset will be addressed in BGE’s next
electric distribution base rate case. 

The Maryland Strategic Infrastructure Development and Enhancement Program (Exelon and BGE). In 2013, legislation in Maryland was signed into law to
establish  a  mechanism,  separate  from  base  rate  proceedings,  for  gas  companies  to  promptly  recover  reasonable  and  prudent  costs  of  eligible  infrastructure
replacement projects incurred after June 1, 2013. The monthly surcharge and infrastructure replacement costs must be approved by the MDPSC and are subject
to a cap and require an annual true-up of the surcharge revenues against actual expenditures. Investment levels in excess of the cap would be recoverable in a
subsequent  gas  base  rate  proceeding  at  which  time  all  costs  for  the  infrastructure  replacement  projects  would  be  rolled  into  gas  distribution  base  rates.
Irrespective of the cap, BGE is required to file a gas rate case every five years under this legislation.

On December 1, 2017 (as amended on January 22, 2018), BGE filed an application with the MDPSC seeking approval for a new gas infrastructure replacement
plan  and  associated  surcharge,  effective  for  the  five-year  period  from  2019  through  2023.  On  May 30,  2018,  the  MDPSC approved  with modifications  a  new
infrastructure plan and associated surcharge, subject to BGE's acceptance of the Order. On June 1, 2018, BGE accepted the MDPSC Order and the associated
surcharge  will  be  effective  in  rates  beginning  in  January  2019.  The  new  five-year  plan  calls  for  capital  expenditures  over  the  2019-2023  timeframe  of    $732
million, with an associated revenue requirement of  $200 million.

District of Columbia Regulatory Matters

District of Columbia Power Line Undergrounding Initiative (Exelon, PHI and Pepco). The District of Columbia government enacted on a permanent basis
(effective  July  11,  2017)  legislation  to  amend  the  Electric  Company  Infrastructure  Improvement  Financing  Act  of  2014  (as  amended)  (the  Infrastructure
Improvement Financing Act) to authorize the District of Columbia Power Line Undergrounding (DC PLUG) initiative, a projected six year, $500 million project to
place underground some of the District of Columbia’s most outage-prone power lines with $250 million of the project costs funded by Pepco and $250 million
funded by the District of Columbia.

The $250 million of project costs funded by Pepco will earn a return and be recovered through a volumetric surcharge on the electric bill of Pepco's customers in
the District of Columbia.

The $250 million of project costs funded by the District of Columbia will come from two sources. Project costs of $187.5 million will be funded through a charge
assessed on Pepco by the District of Columbia; Pepco will recover this charge from customers through a volumetric distribution rider. The remaining costs up to
$62.5 million are to be funded by the existing capital projects program of the District Department of Transportation (DDOT). Ownership and responsibility for the
operation and maintenance of assets funded by the District of Columbia will be transferred to Pepco for a nominal amount upon completion, and Pepco will not
recover or earn a return on the cost of these assets.

In accordance with the Infrastructure Improvement Financing Act, Pepco filed an application for approval of the first two-year plan in the DC PLUG initiative (the
First  Biennial  Plan)  on  July  3,  2017.  Pepco  will  then  be  required  to  make  two  additional  applications.  On  November  9,  2017,  the  DCPSC  issued  an  order
approving  the  First  Biennial  Plan  and  the  application  for  a  financing  order.  Pursuant  to  that  order,  Pepco  is  obligated  to  pay    $187.5 million to the District of
Columbia over the six-year project term, of which it expects to pay $30 million in 2019. Pepco recorded

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

an obligation and offsetting regulatory asset in November. Rates for the DC PLUG initiative went into effect on February 7, 2018.

New Jersey Regulatory Matters

ACE  Infrastructure  Investment  Program  Filing  (Exelon,  PHI  and  ACE).  On  February  28,  2018,  ACE  filed  with  the  NJBPU  the  company’s  Infrastructure
Investment Program (IIP) proposing to seek recovery of a series of investments through a new rider mechanism, totaling $338 million , between 2019-2022 to
provide safe and reliable service for its customers. The IIP will allow for more timely recovery of investments made to modernize and enhance ACE’s electric
system. ACE currently expects a decision in this matter in the second quarter of 2019 but cannot predict if the NJBPU will approve the application as filed.

New Jersey Consolidated Tax Adjustment (Exelon, PHI and ACE). The Consolidated Tax Adjustment (CTA) is a ratemaking policy that requires utilities that
are part of a consolidated tax group to share with customers the tax benefits that came from losses at unregulated affiliates through a reduction in rate base.
After opening a generic proceeding to review the policy, in 2014, the NJBPU issued a decision which retained the CTA, but in a modified format that significantly
reduced the impact of the CTA to ACE. On September 18, 2017, the Appellate Division of the Superior Court of New Jersey reversed the NJBPU’s decision in
adopting the revised CTA policy and held that NJBPU’s actions related to the CTA constituted a rulemaking that should have been undertaken pursuant to the
requirements of the Administrative Procedures Act. The Court did not address the merits of the CTA methodology itself. The NJBPU issued a proposed rule for
comment,  consistent  with  the  requirements  of  the  Administrative  Procedures  Act.  On  January  17,  2019,  the  NJBPU  adopted  the  proposed  CTA  regulations,
which do not have a material impact on ACE. The CTA regulations will be sent to the Office of Administrative Law for publication in the New Jersey Register,
which is expected on or before March 4, 2019.

New Jersey Clean Energy Legislation (Exelon and ACE). On May 23, 2018, the Governor of New Jersey signed new legislation, effective immediately, that
established and modified New Jersey’s clean energy and energy efficiency programs and solar and renewable energy portfolio standards. The new legislation
expands the state's renewable portfolio standard to require that 50% of electric generation sold be from renewable energy sources by 2030; modifies the New
Jersey solar renewable energy portfolio standard to require that 5.1% of electric generation sold in New Jersey be from solar electric power by 2021; lowers the
solar  alternative  compliance  payment  amount  starting  in  2019  and  requires  the  NJBPU  to  adopt  rules  to  replace  the  current  solar  renewable  energy  credit
program; and requires the NJBPU to increase its offshore wind energy credit program to 3,500 MW. The new legislation further imposes an energy efficiency
standard that each electric public utility will be required to reduce annual usage by 2% and provides for utilities to annually file for recovery of the costs of the
programs, including the revenue impact of sales losses resulting from the programs. The NJBPU is required to initiate a study to determine the savings targets
for each public utility, to adopt other rules regarding the programs, and to approve energy efficiency and peak demand reduction programs for each utility. The
new legislation also requires the NJBPU to conduct an energy storage analysis including the potential costs and benefits and to initiate a proceeding to establish
a  goal  of  achieving  2,000  MW  of  energy  storage  by  2030;  requires  the  utilities  to  conduct  a  study  on  voltage  optimization  on  their  distribution  system;  and
requires the NJBPU to establish a community solar program to permit customers to participate in a solar project that is not located on the customer’s property
which the NJBPU issued regulations on January 17, 2019.

On the same day, the Governor of New Jersey also signed new legislation, effective immediately, that will establish a ZEC program providing compensation for
nuclear plants that demonstrate to the NJBPU that they meet certain requirements, including that they make a significant contribution to air quality in the state
and that their revenues are insufficient to cover their costs and risks. Electric distribution utilities in New Jersey, including ACE, will be authorized to collect from
retail distribution customers through a non-bypassable charge all costs associated with the utility’s procurement of the ZECs. See Generation Regulatory Matters
below for additional information.

Other Federal Regulatory Matters

Transmission-Related Income Tax Regulatory Assets (Exelon, ComEd, BGE, PHI, Pepco, DPL and ACE). On December 13, 2016 (as amended on March
13,  2017),  BGE  filed  with  FERC  to  begin  recovering  certain  existing  and  future  transmission-related  income  tax  regulatory  assets  through  its  transmission
formula rate. BGE’s existing regulatory assets included (1) amounts that, if BGE’s transmission formula rate provided for recovery, would have been previously
amortized and (2) amounts that would be amortized and recovered prospectively. ComEd, Pepco, DPL and ACE had similar transmission-related income tax
regulatory liabilities and assets also requiring FERC

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

approval.  On  November  16,  2017,  FERC  issued  an  order  rejecting  BGE’s  proposed  revisions  to  its  transmission  formula  rate  to  recover  these  transmission-
related  income  tax  regulatory  assets.  FERC’s  rejection  order  focused  on  the  lack  of  timeliness  of  BGE’s  request  to  recover  amounts  that  would  have  been
previously amortized but indicated that ongoing recovery of certain transmission-related income tax regulatory assets would provide for a more accurate revenue
requirement. Based on FERC’s order, management of each company concluded that the portion of the total transmission-related income tax regulatory assets
that would have been previously amortized and recovered through rates had the transmission formula rate provided for such recovery was no longer probable of
recovery.  As  a  result,  Exelon,  ComEd,  BGE,  PHI,  Pepco,  DPL  and  ACE  recorded  the  following  charges  to  Income  tax  expense  within  their  Consolidated
Statements of Operations and Comprehensive Income in the fourth quarter of 2017, reducing their associated transmission-related income tax regulatory assets.
Similar regulatory assets and liabilities at PECO are not subject to the same FERC transmission rate recovery formula and, thus, are not impacted by BGE’s
November 16, 2017 FERC order. See above for additional information regarding PECO's transmission formula rate filing.

Exelon

ComEd

BGE

PHI

Pepco

DPL

ACE

$

For the year ended December 31, 2017

35

3

5

27

14

6

7

On  December  18,  2017,  BGE  filed  for  clarification  and  rehearing  of  FERC’s  order,  still  seeking  full  recovery  of  its  existing  transmission-related  income  tax
regulatory asset amounts, including those amounts that would have been previously amortized and recovered through rates had the transmission formula rate
provided for such recovery. On February 27, 2018 (and updated on March 26, 2018), BGE submitted a letter to FERC advising that the lower federal corporate
income tax rate effective January 1, 2018 provided for in the TCJA will be reflected in BGE’s annual formula rate update  effective June 1, 2018, but that the
deferred income tax benefits will not be passed back to customers unless BGE’s formula rate is revised to provide for pass back and recovery of transmission-
related income tax-related regulatory liabilities and assets.

On February 23, 2018 (as amended on July 9, 2018), ComEd, Pepco, DPL, and ACE each filed with FERC to revise their transmission formula rate mechanisms
to facilitate passing back to customers ongoing annual TCJA tax savings and to permit recovery of transmission-related income tax regulatory assets, including
those amounts that would have been previously amortized and recovered through rates had the transmission formula rate provided for such recovery.

On  September  7,  2018,  FERC  issued  orders  rejecting  BGE’s  December  18,  2017  request  for  rehearing  and  clarification  and  ComEd's,  Pepco's,  DPL's  and
ACE's  February  23,  2018  (as  amended  on  July  9,  2018)  filings,  again  citing  the  lack  of  timeliness  of  the  requests  to  recover  amounts  that  would  have  been
previously  amortized,  but  indicating  that  ongoing  recovery  of  certain  transmission-related  income  tax  regulatory  assets  would  provide  for  a  more  accurate
revenue  requirement.  The  orders  did  not  address  the  remittance  of  TCJA  transmission-related  income  tax  regulatory  liabilities,  but  rather  referenced  FERC’s
separate Notice of Inquiry of such amounts issued on March 15, 2018.

On  October  1,  2018,  ComEd,  BGE,  Pepco,  DPL,  and  ACE  submitted  new  filings  to  recover  ongoing  non-TCJA  amortization  amounts  and  refund  TCJA
transmission-related income tax regulatory liabilities for the prospective period starting on October 1, 2018. FERC issued deficiency letters requesting additional
information  on  November  21,  2018  and  January  28,  2019.  ComEd,  BGE,  Pepco,  DPL,  and  ACE  responded  to  the  November  21,  2018  deficiency  letter  on
November  29,  2018  but  cannot  predict  the  outcome  of  these  FERC  proceedings.  If  FERC  ultimately  rules  that  the  future,  ongoing  non-TCJA  amortization
amounts are not recoverable, Exelon, ComEd, BGE, PHI, Pepco, DPL and ACE would record additional charges to Income tax expense, which could be up to
approximately $76 million , $51 million , $15 million , $10 million , $3 million , $5 million and $2 million , respectively, as of December 31, 2018.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

On  October  9,  2018,  ComEd,  Pepco,  DPL,  and  ACE  sought  rehearing  of  FERC's  September  7,  2018  order,  still  seeking  full  recovery  of  their  existing
transmission-related income tax regulatory asset amounts, including those amounts that would have been previously amortized and recovered through rates had
the transmission formula rate provided for such recovery. ComEd, Pepco, DPL, and ACE cannot predict the outcome of this rehearing request. On November 2,
2018, BGE filed an appeal of FERC’s September 7, 2018 order to the Court of Appeals for the D.C. Circuit.

PJM Transmission Rate Design (All Registrants). On June 15, 2016, several parties, including the Utility Registrants, filed a proposed settlement with FERC
to resolve outstanding issues related to cost responsibility for charges to transmission customers for certain transmission facilities that operate at or above 500
kV.  The  settlement  included  provisions  for  monthly  credits  or  charges  related  to  the  periods  prior  to  January  1,  2016  that  are  expected  to  be  refunded  or
recovered through PJM wholesale transmission rates through December 2025.

On  May  31,  2018,  FERC  issued  an  order  approving  the  settlement  and  directed  PJM  to  adjust  wholesale  transmission  rates  within  30  days.  Pursuant  to  the
order, similar charges for the period January 1, 2016 through June 30, 2018 will also be refunded or recovered through PJM wholesale transmission rates over
the subsequent 12-month period. PJM commenced billing the refunds and charges associated with this settlement in August 2018. The Utility Registrants expect
to  refund  or  recover  these  settlement  amounts  through  prospective  electric  distribution  customer  rates.  On  July  2,  2018,  several  parties  filed  petitions  for
rehearing or clarification.

Pursuant  to  the  FERC  approval  of  the  settlement  and  the  expected  refund  or  recovery  of  the  associated  amounts  from  electric  distribution  customers,  in  the
second quarter of 2018 and as adjusted in the third quarter of 2018, the Utility Registrants recorded the following payables to/receivables from PJM and related
regulatory assets/liabilities. Generation recorded a $41 million net payable to PJM and a pre-tax charge within Purchased power and fuel expense in Exelon's
and Generation's Consolidated Statements of Operations and Comprehensive Income.

PJM Receivable

PJM Payable

Regulatory Asset

Regulatory Liability

$

220 $

176 $

136 $

Exelon

Generation (a)
ComEd

PECO

BGE

PHI

Pepco

DPL

—

122

85

—

13

—

10

41

—

—

51

84

84

—

—

—

—

51

85

84

—

1

221

—

122

85

—

14

—

10

4

ACE
__________
(a) Does not include an offsetting receivable from New Jersey Utilities of $16 million as of December 31, 2018.

—

3

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Regulatory Assets and Liabilities

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Regulatory  assets  represent  incurred  costs  that  have  been  deferred  because  of  their  probable  future  recovery  from  customers  through  regulated  rates.
Regulatory liabilities represent the excess recovery of costs or accrued credits that have been deferred because it is probable such amounts will be returned to
customers through future regulated rates or represent billings in advance of expenditures for approved regulatory programs.

The  following  tables  provide  information  about  the  regulatory  assets  and  liabilities  of  Exelon,  ComEd,  PECO,  BGE,  PHI,  Pepco,  DPL  and  ACE  as  of
December 31, 2018 and December 31, 2017 :

December 31, 2018

Regulatory assets

Exelon

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Pension and other postretirement benefits

$

2,553   $

—   $

—   $

—   $

—   $

—   $

—   $

Pension and other postretirement benefits -
Merger related

Deferred income taxes

AMI programs - Deployment Costs

AMI programs - Legacy Meters

AMI programs - Post-test year costs

Electric distribution formula rate annual
reconciliations

Electric distribution formula rate significant
one-time events

Energy efficiency costs

Fair value of long-term debt

Fair value of PHI's unamortized energy
contracts

Asset retirement obligations

MGP remediation costs

Renewable energy

Electric Energy and Natural Gas Costs

Transmission formula rate annual
reconciliations

Energy efficiency and demand response
programs

Merger integration costs

Under-recovered revenue decoupling

Securitized stranded costs

Removal costs

DC PLUG charge

Deferred storm costs

Other

Total regulatory assets

        Less: current portion

1,266  

414  

202  

328  

32  

—  

—  

—  

136  

—  

158  

158  

81  

472  

—  

—  

79  

309  

249  

—  

6  

—  

—  

—  

—  

—  

—  

—  

81  

472  

702  

561  

118  

326  

249  

193  

41  

545  

42  

59  

50  

564  

159  

41  

303  

9,459  

1,222  

—  

404  

—  

24  

—  

—  

—  

—  

—  

—  

22  

17  

—  

49  

—  

1  

—  

—  

—  

—  

—  

—  

—  

—  

113  

48  

32  

—  

—  

—  

—  

—  

16  

—  

—  

51  

4  

—  

10  

89  

120  

—  

—  

—  

—  

569  

561  

1  

—  

—  

93  

31  

—  

10  

50  

90  

—  

—  

—  

—  

—  

—  

1  

—  

—  

84  

10  

289  

255  

188  

3  

2  

—  

—  

—  

—  

17  

575  

177  

39  

57  

50  

564  

159  

41  

162  

2,801  

489  

18  

57  

—  

158  

159  

9  

79  

913  

270  

—  

—  

39  

30  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

14  

67  

11  

—  

—  

97  

—  

4  

28  

290  

59  

110  

1,600  

293  

24  

541  

81  

Total noncurrent regulatory assets

$

8,237   $

1,307   $

460   $

398   $

2,312   $

643   $

231   $

292

—

—

—

—

—

—

—

—

—

—

—

—

—

—

9

7

—

10

—

50

309

—

28

13

426

40

386

 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

December 31, 2018

Exelon

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Regulatory liabilities

Deferred income taxes

Nuclear decommissioning

Removal costs

Electric Energy and Natural Gas Costs

Other

Total regulatory liabilities

        Less: current portion

$

5,228   $

2,394   $

—   $

1,132   $

1,702   $

798   $

510   $

394

2,606  

1,547  

294  

528  

10,203  

644  

2,217  

1,368  

137  

227  

6,343  

293  

389  

—  

132  

75  

596  

175  

—  

52  

6  

79  

1,269

77  

—  

127  

19  

100  

1,948  

84  

—  

20  

—  

11  

829  

7  

—  

107  

18  

30  

665  

59  

—

—

1

25

420

18

402

Total noncurrent regulatory liabilities

$

9,559   $

6,050   $

421   $

1,192

$

1,864   $

822   $

606   $

293

 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
Table of Contents

December 31, 2017

Regulatory assets

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Pension and other postretirement benefits $

2,455   $

—   $

—   $

—   $

—   $

—   $

—   $

Pension and other postretirement benefits
- Merger related

Deferred income taxes

AMI programs - Deployment costs

AMI programs - Legacy meters

AMI programs - Post-test year costs

Electric distribution formula rate annual
reconciliations

Electric distribution formula rate significant
one-time events

Energy efficiency costs

Fair value of long-term debt

Fair value of PHI's unamortized energy
contracts

Asset retirement obligations

MGP remediation costs

Renewable energy

Electric energy and natural gas costs

Transmission formula rate annual
reconciliations

Energy efficiency and demand response
programs

Merger integration costs

Under-recovered revenue decoupling

Securitized stranded costs

Removal costs

DC PLUG charge

Deferred storm costs

Other

Total regulatory assets

        Less: current portion

1,393  

306  

385  

223  

32  

—  

—  

—  

155  

—  

186  

186  

58  

166  

—  

—  

73  

273  

256  

—  

6  

—  

—  

—  

—  

—  

—  

—  

58  

166  

758  

750  

109  

295  

258  

47  

35  

596  

45  

55  

79  

529  

190  

27  

311  

9,288  

1,267  

—  

297  

—  

36  

—  

—  

—  

—  

—  

—  

22  

22  

—  

1  

—  

1  

—  

—  

—  

—  

—  

—  

—  

—  

129  

53  

32  

—  

—  

—  

—  

—  

14  

—  

—  

16  

7  

—  

9  

101  

134  

—  

—  

—  

—  

619  

750  

—  

—  

2  

30  

22  

—  

9  

58  

100  

—  

—  

—  

—  

—  

—  

—  

—  

—  

8  

3  

285  

310  

229  

6  

14  

—  

—  

—  

—  

15  

571

174  

39  

41  

79  

529  

190  

27  

165  

3,047  

554  

20  

38  

—  

150  

190  

7  

79  

891  

213  

—  

—  

43  

34  

—  

—  

—  

—  

—  

—  

—  

—  

1  

7  

8  

81  

10  

3  

—  

93  

—  

5  

29  

314  

69  

106  

1,279  

225  

31  

410  

29  

Total noncurrent regulatory assets

$

8,021   $

1,054   $

381   $

397

$

2,493   $

678   $

245   $

294

—

—

—

—

—

—

—

—

—

—

—

—

—

1

15

11

—

9

—

79

286

—

15

14

430

71

359

 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

December 31, 2017

Exelon

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Regulatory liabilities

Deferred income taxes

Nuclear decommissioning

Removal costs

Electric Energy and Natural Gas Costs

Other

Total regulatory liabilities

        Less: current portion

$

5,241   $

2,479   $

—   $

1,032   $

1,730   $

809   $

510   $

411

3,064  

1,573  

111  

399  

10,388  

523  

2,528  

1,338  

47  

185  

6,577  

249  

536  

—  

60  

94  

690  

141  

—  

105  

—  

26  

1,163

62  

—  

130  

4  

64  

1,928  

56  

—  

20  

—  

3  

832  

3  

—  

110  

1  

14  

635  

42  

—

—

3

8

422

11

411

Total noncurrent regulatory liabilities

$

9,865   $

6,328   $

549   $

1,101

$

1,872   $

829   $

593   $

Descriptions of the regulatory assets and liabilities included in the tables above are summarized below, including their recovery and amortization periods.

Line Item

Description

End Date of Remaining
Recovery/Refund Period

Return

Pension and Other
Postretirement Benefits

Primarily reflects the Utility Registrants' portion of deferred
costs, including unamortized actuarial losses (gains) and prior
service costs (credits), associated with Exelon's pension and
other postretirement benefit plans, which are recovered
through customer rates once amortized through net periodic
benefit cost. Also, includes the Utility Registrants' non–service
cost components capitalized in Property, plant and equipment,
net on their Consolidated Balance Sheets.

Pension and Other
Postretirement Benefits -
Merger Related

The deferred costs are amortized over the plan participants'
average remaining service periods subject to applicable
pension and other postretirement cost recognition policies. See
Note 16 – Retirement Benefits for additional information. The
capitalized non–service cost components are amortized over
the lives of the underlying assets.

295

The deferred costs are
amortized over the plan
participants' average remaining
service periods subject to
applicable pension and other
postretirement cost recognition
policies. See Note 16 –
Retirement Benefits for
additional information. The
capitalized non–service cost
components are amortized over
the lives of the underlying
assets.

Legacy Constellation - 2038

Legacy PHI - 2032

No

No

 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Line Item

Description

End Date of Remaining
Recovery/Refund Period

Return

Deferred Income Taxes

Deferred income taxes that are recoverable or refundable
through customer rates, primarily associated with accelerated
depreciation, the equity component of AFUDC, and the effects
of income tax rate changes, including those resulting from the
TCJA. These amounts include transmission-related regulatory
liabilities that require FERC approval separate from the
transmission formula rate. See Transmission-Related Income
Tax Regulatory Assets section above for additional information.

Over the period in which the
related deferred income taxes
reverse, which is generally
based on the expected life of
the underlying assets. For
TCJA, generally refunded over
the remaining depreciable life
of the underlying assets,
except in certain jurisdictions
where the commissions have
approved a shorter refund
period for certain assets not
subject to IRS normalization
rules.

BGE - 2026

No

AMI Programs - Deployment
Costs

Installation costs of new smart meters, including
implementation costs at Pepco and DPL of dynamic pricing for
energy usage resulting from smart meters.

Pepco - 2027

Yes

DPL - 2030

ComEd - 2028

PECO - 2020

AMI Programs - Legacy Meters Early retirement costs of legacy meters.

BGE - 2028

Pepco - 2027

DPL - 2030

ComEd, Pepco (District of
Columbia), DPL (Delaware) -
Yes

PECO, BGE, Pepco
(Maryland), DPL (Maryland) -
No

AMI Programs - Post-test year
incremental costs

Post-test year incremental program deployment costs of smart
meters. As of December 31, 2018 and 2017, the portion of
BGE's regulatory asset related to gas and electric costs was
$10 million and $22 million, respectively.

BGE (gas) - 2021

BGE (gas) - Yes

BGE (electric) - Not currently
being recovered.

BGE (electric) - No

Electric distribution formula
rate annual reconciliations

Electric distribution formula
rate significant one-time events

Under-recoveries related to electric distribution service costs
recoverable through ComEd's performance-based formula rate,
which is updated annually with rates effective on January 1 st .

2020

Under-recoveries of electric distribution service costs related to
significant one-time events (e.g., storm costs), which are
recovered over 5 years from date of the event.

2022

Yes

Yes

296

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Line Item

Description

End Date of Remaining
Recovery/Refund Period

Return

Energy Efficiency Costs

Fair Value of Long-Term Debt

Costs recovered through the energy efficiency formula rate
tariff and the reconciliation of the difference of the revenue
requirement in effect for the prior year and the revenue
requirement based on actual prior year costs. Deferred energy
efficiency costs are recovered over the weighted average
useful life of the related energy measure.

Represents the difference between the carrying value and fair
value of long-term debt of PHI and BGE of $569 million and
$133 million, respectively, as of December 30, 2018 and $619
million and $139 million, respectively, as of December 30,
2017, as of the PHI and Constellation merger dates.

2029

BGE - 2043
PHI - 2045

Fair Value of PHI’s
Unamortized Energy Contracts

Represents the regulatory assets recorded at Exelon and PHI
offsetting the fair value adjustment related to Pepco's, DPL's
and ACE's electricity and natural gas energy supply contracts
recorded at PHI as of the PHI merger date.

2036

Asset Retirement Obligations

Future legally required removal costs associated with existing
asset retirement obligations.

Over the life of the related
assets.

MGP Remediation Costs

Environmental remediation costs for MGP sites.

Over the expected remediation
period. See Note 22 -
Commitments and
Contingencies for additional
information.

Yes

No

No

Yes, once the removal
activities have been
performed.

ComEd, PECO - No

Renewable Energy

Represents the change in fair value of ComEd‘s 20-year
floating-to-fixed long-term renewable energy swap contracts.

2032

No

Electric Energy and Natural
Gas Costs

Under (over) recoveries related to energy and gas supply
related costs recoverable (refundable) under approved rate
riders.

2025

DPL (Delaware), ACE - Yes

ComEd, PECO, BGE, Pepco,
DPL (Maryland) - No

Transmission formula rate
annual reconciliations

Under (over)-recoveries related to transmission service costs
recoverable through the Utility Registrants’ FERC formula
rates, which are updated annually with rates effective each
June 1 st .

2020

Yes

297

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Line Item

Description

End Date of Remaining
Recovery/Refund Period

Return

Energy efficiency and demand
response programs

Includes under (over)-recoveries of costs incurred related to
energy efficiency programs and demand response programs
and recoverable costs associated with customer direct load
control and energy efficiency and conservation programs that
are being recovered from customers.

PECO - 2021

BGE - 2023

BGE, Pepco, DPL, ACE - Yes

PECO - Yes on capital
investment recovered through
this mechanism

Merger Integration Costs

Integration costs to achieve distribution synergies related to the
Constellation merger and PHI acquisition. Costs for Pepco
(Maryland) and Pepco (District of Columbia) were $9 million
each as of December 31, 2018 and $11 million and $9 million,
respectively, as of December 31, 2017.

Pepco, DPL - 2033

BGE - 2021

Pepco - 2021

DPL- 2023

ACE - Not currently being
recovered.

BGE, Pepco (Maryland), DPL -
Yes

Pepco (District of Columbia),
ACE - No

Under (Over)-Recovered
Revenue Decoupling

Electric and / or gas distribution costs recoverable from or
(refundable) to customers under decoupling mechanisms.

BGE, Pepco and DPL - 2019

BGE, Pepco, DPL- No

Securitized Stranded Costs

Represents certain stranded costs associated with ACE's
former electricity generation business.

2022

Removal Costs

For PHI, Pepco, DPL and ACE, the regulatory asset represents
costs incurred to remove property, plant and equipment in
excess of amounts received from customers through
depreciation rates. For ComEd, BGE, PHI, Pepco and DPL, the
regulatory liability represents amounts received from customers
through depreciation rates to cover the future non–legally
required cost to remove property, plant and equipment, which
reduces rate base for ratemaking purposes.

PHI, Pepco, DPL and ACE -
Asset is generally recovered
over the life of the underlining
assets.

ComEd, BGE, PHI, Pepco and
DPL - The liability is reduced
as costs are incurred.

Yes

Yes

DC PLUG Charge

Costs associated with the DC Plug Initiative. See District of
Columbia Regulatory Matters discussion above.

Deferred Storm Costs

Nuclear Decommissioning

For Pepco, DPL and ACE amounts represent total incremental
storm restoration costs incurred due to major storm events
recoverable from customers in the Maryland and New Jersey
jurisdictions.

Estimated future decommissioning costs for the Regulatory
Agreement Units that are less than the associated NDT fund
assets. See Note 15 - Asset Retirement Obligations for
additional information

298

2019 - $30M

$127 million to be determined
based on future biennial plans
filed with the DCPSC.

Portion of asset funded by
Pepco-Yes

Pepco - 2022

DPL - 2023

ACE - 2020

Pepco, DPL - Yes

ACE - No

Not currently being refunded.

No

Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Capitalized Ratemaking Amounts Not Recognized

The following table presents authorized amounts capitalized for ratemaking purposes related to earnings on shareholders’ investment that are not recognized for
financial reporting purposes in Exelon's and the Utility Registrant's Consolidated Balance Sheets. These amounts will be recognized as revenues in the related
Consolidated Statements of Operations and Comprehensive Income in the periods they are billable to our customers.

December 31, 2018

$

65   $

8   $

—   $

49   $

8   $

5   $

3   $

—

Exelon

ComEd (a)

PECO

BGE (b)

PHI

Pepco (c)

DPL (c)

ACE

$

December 31, 2017
__________
(a) Reflects ComEd's unrecognized equity returns earned for ratemaking purposes on its electric distribution formula rate regulatory assets.
(b) BGE's authorized amounts capitalized for ratemaking purposes primarily relate to earnings on shareholders' investment on its AMI programs.
(c) Pepco's and DPL's authorized amounts capitalized for ratemaking purposes relate to earnings on shareholders' investment on their respective AMI Programs and Energy

—

53   $

10   $

69   $

—   $

6   $

6   $

4   $

Efficiency and Demand Response Programs. The earnings on energy efficiency are on Pepco DC and DPL DE programs only.

Generation Regulatory Matters (Exelon and Generation)

Illinois Regulatory Matters

Zero Emission Standard. Pursuant to FEJA, on January 25, 2018, the ICC announced that Generation’s Clinton Unit 1, Quad Cities Unit 1 and Quad Cities
Unit 2 nuclear plants were selected as the winning bidders through the IPA's ZEC procurement event.

Generation executed the required ZEC procurement contracts with Illinois utilities, including ComEd, effective January 26, 2018 and began recognizing revenue,
with compensation for the sale of ZECs retroactive to the June 1, 2017 effective date of FEJA. The ZEC price was initially established at $16.50 per MWh of
production, subject to annual future adjustments determined by the IPA for specified escalation and pricing adjustment mechanisms designed to lower the ZEC
price based on increases in underlying energy and capacity prices. Illinois utilities are required to purchase all ZECs delivered by the zero-emissions nuclear-
powered generating facilities, subject to annual cost caps. For the initial delivery year, June 1, 2017 to May 31, 2018, and subsequent delivery year, June 1,
2018 to May 31, 2019, the ZEC annual cost cap was set at $235 million (ComEd’s share is approximately $170 million ). For subsequent delivery years, the IPA-
approved  targeted  ZEC  procurement  amounts  will  change  based  on  forward  energy  and  capacity  prices.  ZECs  delivered  to  Illinois  utilities  in  excess  of  the
annual cost cap may be paid in subsequent years if the payments do not exceed the prescribed annual cost cap for that year. For the year ended December 31,
2018, Generation recognized revenue of $373 million , of which $150 million related to ZECs generated from June 1, 2017 through December 31, 2017.

On February 14, 2017, two lawsuits were filed in the Northern District of Illinois against the IPA alleging that the state’s ZEC program violates certain provisions
of the U.S. Constitution. Both lawsuits argued that the Illinois ZEC program would distort PJM's FERC-approved energy and capacity market auction system of
setting  wholesale  prices  and  sought  a  permanent  injunction  preventing  the  implementation  of  the  program.  Exelon  intervened  and  filed  motions  to  dismiss  in
both  lawsuits,  which  were  granted  by  the  district  court.  On  September  13,  2018,  the  U.S.  Circuit  Court  of  Appeals  for  the  Seventh  Circuit  affirmed  the  lower
court's dismissal of both lawsuits. The U.S. Circuit Court of Appeals for the Seventh Circuit panel denied the plaintiffs’ request for rehearing on October 9, 2018.
On January 7, 2019, plaintiffs filed a petition seeking Supreme Court review of the case.

New Jersey Regulatory Matters

New Jersey Clean Energy Legislation . On May 23, 2018, the Governor of New Jersey signed new legislation, effective immediately, that will establish a ZEC
program providing compensation for nuclear plants that demonstrate to the NJBPU that they meet certain requirements, including that they make a significant
contribution to air quality in the state and that their revenues are insufficient to cover their costs and risks. Under the legislation, the NJBPU will issue ZECs to
qualifying nuclear power plants and the electric distribution utilities in New Jersey, including ACE,

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

will be required to purchase those ZECs. Selected nuclear plants will receive annual ZEC payments for each energy year (12-month period from June 1 through
May  31)  within  90  days  after  the  completion  of  such  energy  year.  The  quantity  of  ZECs  issued  will  be  determined  based  on  the  greater  of  40%  of  the  total
number  of  MWh  of  electricity  distributed  by  the  public  electric  distribution  utilities  in  New  Jersey  in  the  prior  year,  or  the  total  number  of  MWh  of  electricity
generated  in  the  prior  year  by  the  selected  nuclear  power  plants.  The  ZEC  price  is  approximately  $10 per  MWh  during  the  first  3-year  eligibility  period.  For
eligibility periods following the first 3-year eligibility period, the NJBPU has discretion to reduce the ZEC price. On November 19, 2018, the NJBPU issued an
order  providing  for  the  method  and  application  process  for  determining  the  eligibility  of  nuclear  power  plants,  a  draft  method  and  process  for  ranking  and
selecting eligible nuclear power plants, and the establishment of a mechanism for each regulated utility to purchase ZECs from selected nuclear power plants.
On December 19, 2018, PSEG filed complete applications seeking NJBPU approval for Salem 1 and Salem 2, of which Generation owns a 42.59% ownership
interest,  to  participate  in  the  ZEC  program.  On  the  same  day,  Generation  filed  certain  Supplemental  Information  with  the  NJBPU  providing  proprietary
information that was requested in the application but which could not be shared with PSEG. The NJBPU must complete its processes for determining eligibility
for,  and  participation  in,  the  ZEC  program  by  April  18,  2019.  See  Note  8 - Early  Plant  Retirements  for  additional  information  on  New  Jersey’s  ZEC  program
potential impacts to PSEG’s Salem nuclear plant.

New York Regulatory Matters

New York Clean Energy Standard. On August 1, 2016, the NYPSC issued an order establishing the New York CES, a component of which included a Tier 3
ZEC program targeted at preserving the environmental attributes of zero-emissions nuclear-powered generating facilities that met specific criteria demonstrating
public necessity, determined by the NYPSC to be Generation's FitzPatrick, Ginna and Nine Mile Point nuclear facilities. The New York State Energy Research
and  Development  Authority  (NYSERDA)  centrally  procures  the  ZECs  through  a  12-year  contract  extending  from  April  1,  2017  through  March  31,  2029,
administered  in  six  two-year  tranches.  ZEC  payments  are  made  based  upon  the  number  of  MWh  produced  by  each  facility,  subject  to  specified  caps  and
minimum performance requirements. The ZEC price for the first tranche was set at $17.48 per MWh of production and is administratively determined using a
formula based on the social cost of carbon as determined in 2016 by the federal government, subject to pricing adjustments designed to lower the ZEC price
based on increases in underlying energy and capacity prices.  Following the first tranche, the price will be updated bi-annually.  Each Load Serving Entity (LSE)
is required to purchase an amount of ZECs from NYSERDA equivalent to its load ratio share of the total electric energy in the New York Control Area.  Cost
recovery from ratepayers is incorporated into the commodity charges on customer bills.

Generation is currently recognizing revenue for the sale of New York ZECs in the month they are generated and for the years ended December 31, 2018 and
2017 , Generation has recognized revenue of $438 million and $311 million , respectively.

On  October  19,  2016,  a  coalition  of  fossil-generation  companies  filed  a  complaint  in  federal  district  court  against  the  NYPSC  alleging  that  the  ZEC  program
violates  certain  provisions  of  the  U.S.  Constitution;  specifically,  that  the  ZEC  program  interferes  with  FERC’s  jurisdiction  over  wholesale  rates  and  that  it
discriminates against out of state competitors. On December 9, 2016, several parties filed motions to intervene in the case and to dismiss the lawsuit. On July
25, 2017, the court granted the motions to dismiss. On September 27, 2018, the U.S. Court of Appeals for the Second Circuit affirmed the lower court's dismissal
of the complaint against the ZEC program. On January 7, 2019, the fossil-generation companies filed a petition seeking Supreme Court review of the case.

In addition, on November 30, 2016 (as amended on January 13, 2017), a group of parties filed a Petition in New York State court seeking to invalidate the ZEC
program,  which  argued  that  the  NYPSC  did  not  have  authority  to  establish  the  program,  that  it  violated  state  environmental  law  and  that  it  violated  certain
technical  provisions  of  the  State  Administrative  Procedures  Act  when  adopting  the  ZEC  program.  Subsequently,  Generation,  CENG  and  the  NYPSC  filed
motions to dismiss the state court action, which were later opposed by the plaintiffs. On January 22, 2018, the court dismissed the environmental claims and the
majority  of  the  plaintiffs  from  the  case  but  denied  the  motions  to  dismiss  with  respect  to  the  remaining  five  plaintiffs  and  claims,  without  commenting  on  the
merits  of  the  case.  Generation,  CENG  and  the  state's  answers  and  briefs  were  filed  on  March  30,  2018.  On  December  17,  2018,  plaintiffs  filed  a  reply  brief
introducing  new  arguments  and  new  evidence.  The  State  of  New  York  filed  a  motion  to  strike  on  December  28,  2018.  On  January  4,  2019,  Generation  and
CENG filed a motion to strike the new arguments and new evidence. After briefing is completed, the court will decide whether or not to set the case for hearing.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Other legal challenges remain possible, the outcomes of which remain uncertain. See Note 8 - Early Plant Retirements for additional information related to Ginna
and Nine Mile Point, and Note 5 - Mergers, Acquisitions and Dispositions for additional information on Generation's acquisition of FitzPatrick.

Ginna  Nuclear  Power  Plant  Reliability  Support  Services  Agreement.  In  November  2014,  in  response  to  a  petition  filed  by  Ginna  Nuclear  Power  Plant
(Ginna) regarding the possible retirement of Ginna, the NYPSC directed Ginna and Rochester Gas & Electric Company (RG&E) to negotiate a RSSA to support
the continued operation of Ginna to maintain the reliability of the RG&E transmission grid for a specified period of time.

On April 8, 2016, FERC accepted Ginna’s compliance filing and on April 20, 2016, the NYPSC accepted the revised RSSA with a term expiring on March 31,
2017. In April 2016, Generation began recognizing revenue based on the final approved pricing contained in the RSSA and also recognized a one-time revenue
adjustment of $101 million representing the net cumulative previously unrecognized amount of revenue retroactive from the April 1, 2015 effective date through
March 31, 2016. A 49.99% portion of the one-time adjustment was removed from Generation’s results of operations as a result of the noncontrolling interests in
CENG.

The RSSA required Ginna to continue operating through the RSSA term. On September 30, 2016, Ginna filed the required notice with the NYPSC of its intent to
continue operating beyond the March 31, 2017 expiry of the RSSA, conditioned upon successful execution of an agreement between Ginna and NYSERDA for
the sale of ZECs under the New York CES. Subject to prevailing over any administrative or legal challenges, it is expected the New York CES will allow Ginna to
continue  to  operate  through  the  end  of  its  current  operating  license  in  2029.  See  Note  8 - Early  Plant  Retirements  for  additional  information  regarding  the
impacts of a decision to early retire a nuclear plant.

Federal Regulatory Matters

Operating License Renewals

Conowingo  Hydroelectric  Project  .  On  August  29,  2012,  Generation  submitted  a  hydroelectric  license  application  to  FERC  for  a  46-year  license  for  the
Conowingo Hydroelectric Project (Conowingo). In connection with Generation’s efforts to obtain a water quality certification pursuant to Section 401 of the Clean
Water  Act  (401  Certification)  with  Maryland  Department  of  the  Environment  (MDE)  for  Conowingo,  Generation  continues  to  work  with  MDE  and  other
stakeholders to resolve water quality licensing issues, including: (1) water quality, (2) fish habitat, and (3) sediment.

On April 21, 2016, Generation and the U.S. Fish and Wildlife Service of the U.S. Department of the Interior executed a Settlement Agreement resolving all fish
passage issues between the parties. The financial impact of the Settlement Agreement is estimated to be $3 million to $7 million per year, on average, over the
life of the new license, including both capital and operating costs. The actual timing and amount of these costs are not currently fixed and may vary significantly
from year to year throughout the life of the new license.

On April 27, 2018, the MDE issued its 401 Certification for Conowingo. As issued, the 401 Certification contains numerous conditions, including those relating to
reduction of nutrients from upstream  sources, removal of all visible trash and debris from upstream  sources,  and implementation  of measures relating  to fish
passage, which could have a material, unfavorable impact on Exelon’s and Generation’s financial statements through an increase in capital expenditures and
operating  costs  if  implemented.  On  May  25,  2018,  Generation  filed  complaints  in  federal  and  state  court,  along  with  a  petition  for  reconsideration  with  MDE,
alleging that the conditions are unfair and onerous violating MDE regulations, state, federal, and constitutional law. Generation also requested that FERC defer
action  on  the  federal  license  while  these  significant  state  and  federal  law  issues  are  pending.  On  July  9,  2018,  MDE  filed  a  motion  to  dismiss  Generation's
complaint  in  state  court,  which  was  granted  without  prejudice  on  October  9,  2018.  The  court  found  MDE's  Certification  was  not  a  "final  decision"  of  Exelon's
rights  and  because  Exelon's  motion  for  reconsideration  remains  pending,  as  does  its  administrative  appeal  of  the  401  Certification,  there  was  no  final
administrative  decision  for  the  court  to  review  at  this  time.  On  November  5,  2018,  Exelon  appealed  the  Maryland  Circuit  Court's  dismissal  of  Exelon's  state
complaint. Exelon continues to challenge the 401 Certification through the administrative process and in federal court. Exelon and Generation cannot predict the
final outcome or its financial impact, if any, on Exelon or Generation.

As of December 31, 2018, $37 million of direct costs associated with Conowingo licensing efforts have been capitalized.

Peach Bottom Units 2 and 3 . On July 10, 2018, Generation submitted a second 20-year license renewal application with the NRC for Peach Bottom Units 2
and 3. Generation anticipates the second license renewal process to take

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(Dollars in millions, except per share data unless otherwise noted)

approximately  2  years  from  the  application  submission  until  completion  of  the  NRC’s  review  process.  Peach  Bottom  Units  2  and  3  are  currently  licensed  to
operate through 2033 and 2034, respectively.

PJM Transmission Rate Design . Refer to Other Federal Regulatory Matters above for additional information.

5. Mergers, Acquisitions and Dispositions (Exelon, Generation and PHI)

Acquisition of FirstEnergy Solutions Load Business (Exelon and Generation)

On  July  9,  2018,  Generation  entered  into  an  Asset  Purchase  Agreement  (the  Purchase  Agreement)  with  FirstEnergy  Solutions  Corporation  (FirstEnergy).
Pursuant  to  the  Purchase  Agreement,  FirstEnergy  agreed  to  assign  all  of  its  retail  electricity  and  wholesale  load  serving  contracts  and  certain  other  related
commodity contracts to Generation for an all cash purchase price of $140 million . The closing of the transaction was subject to certain conditions including the
approval  of  the  Purchase  Agreement  by  the  United  States  Bankruptcy  Court  for  the  Northern  District  of  Ohio  (Bankruptcy  Court).  At  FirstEnergy's  request,
Bankruptcy Court's review of the transaction was delayed on six occasions, and Generation disputed these delays with the Bankruptcy Court. On January 23,
2019 the Bankruptcy Court approved an order that stipulated FirstEnergy's termination of the Purchase Agreement, effective January 22, 2019. The termination
order provided for Generation to receive a refund of its escrow deposit, payment of a termination fee and reimbursement of transaction expenses, all of which
were immaterial.

Acquisition of James A. FitzPatrick Nuclear Generating Station (Exelon and Generation)

On March 31, 2017, Generation acquired the 842 MW single-unit James A. FitzPatrick (FitzPatrick) nuclear generating station located in Scriba, New York from
Entergy Nuclear FitzPatrick LLC (Entergy) for a total purchase price of $289 million , which consisted of a cash purchase price of $110 million and a net cost
reimbursement to and on behalf of Entergy of $179 million . As part of the acquisition agreements, Generation provided nuclear fuel and reimbursed Entergy for
incremental costs to prepare for  and conduct  a plant refueling  outage;  and Generation  reimbursed Entergy for incremental costs to operate  and  maintain the
plant  for  the  period  after  the  refueling  outage  through  the  acquisition  closing  date.  These  reimbursements  covered  costs  that  Entergy  otherwise  would  have
avoided  had  it  shutdown  the  plant  as  originally  intended  in  January  2017.  The  amounts  reimbursed  by  Generation  were  offset  by  FitzPatrick's  electricity  and
capacity  sales  revenues  for  this  same  post-outage  period.  As  part  of  the  transaction,  Generation  received  the  FitzPatrick  NDT  fund  assets  and  assumed  the
obligation to decommission FitzPatrick. The NRC license for FitzPatrick expires in 2034.

The fair values of FitzPatrick’s assets and liabilities were determined based on significant estimates and assumptions that are judgmental in nature, including
projected future cash flows (including timing), discount rates reflecting risk inherent in the future cash flows and future power and fuel market prices.

An after-tax bargain purchase gain of $233 million was included within Exelon's and Generation's Consolidated Statements of Operations and Comprehensive
Income which primarily reflects differences in strategies between Generation and Entergy for the intended use and ultimate decommissioning of the plant. See
Note 15 — Asset  Retirement  Obligations  and Note 16 — Retirement Benefits for  additional  information  regarding  the  FitzPatrick  decommissioning  ARO  and
pension and OPEB updates.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  following  table  summarizes  the  final  acquisition-date  fair  value  of  the  consideration  transferred  and  the  assets  and  liabilities  assumed  for  the  FitzPatrick
acquisition by Generation:

Cash paid for purchase price

Cash paid for net cost reimbursement

Nuclear fuel transfer

Total consideration transferred

Identifiable assets acquired and liabilities assumed

Current assets

Property, plant and equipment

Nuclear decommissioning trust funds

Other assets (a)

Total assets

Current liabilities

Nuclear decommissioning ARO

Pension and OPEB obligations

Deferred income taxes

Spent nuclear fuel obligation

Other liabilities

Total liabilities

Total net identifiable assets, at fair value

Bargain purchase gain (after-tax)

$

$

$

$

$

$

$

$

110

125

54

289

60

298

807

114

1,279

6

444

33

149

110

15

757

522

233

_________
(a)

Includes a $110 million asset associated with a contractual right to reimbursement from the New York Power Authority (NYPA), a prior owner of FitzPatrick, associated
with the DOE one-time fee obligation. See Note 22 - Commitments and Contingencies for additional information regarding SNF obligations to the DOE.

Exelon  and  Generation  incurred  $57 million of  merger  and  integration  related  costs  to  FitzPatrick  for  the  year  ended  December  31,  2017  which are included
within  Operating  and  maintenance  expense  in  Exelon's  and  Generation's  Consolidated  Statements  of  Operations  and  Comprehensive  Income.  Exelon  and
Generation did not incur any merger and integration costs related to FitzPatrick for the year ended December 31, 2018 .

Acquisition of ConEdison Solutions (Exelon and Generation)

On  September  1,  2016,  Generation  acquired  the  competitive  retail  electricity  and  natural  gas  business  of  Consolidated  Edison  Solutions,  Inc.  (ConEdison
Solutions), a subsidiary of Consolidated Edison, Inc. for a purchase price of $257 million including net working capital of $204 million . The renewable energy,
sustainable services and energy efficiency businesses of ConEdison Solutions are excluded from the transaction.

The purchase price of $257 million equaled the estimated fair value of the net assets acquired and the liabilities assumed and, therefore, no goodwill or bargain
purchase was recorded as of the acquisition date.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Merger with Pepco Holdings, Inc. (Exelon)

Description of Transaction

On March 23, 2016 , Exelon completed the merger contemplated by the Merger Agreement among Exelon, Purple Acquisition Corp., a wholly owned subsidiary
of Exelon (Merger Sub) and Pepco Holdings, Inc. (PHI), for a total purchase price consideration of approximately $7.1 billion . As a result of the merger, Merger
Sub was merged into PHI (the PHI Merger) with PHI surviving as a wholly owned subsidiary of Exelon and Exelon Energy Delivery Company, LLC (EEDC), a
wholly owned subsidiary of Exelon which also owns Exelon's interests in ComEd, PECO and BGE (through a special purpose subsidiary in the case of BGE).
Following  the  completion  of  the  PHI  Merger,  Exelon  and  PHI  completed  a  series  of  internal  corporate  organization  restructuring  transactions  resulting  in  the
transfer  of  PHI’s  unregulated  business  interests  to  Exelon  and  Generation  and  the  transfer  of  PHI,  Pepco,  DPL  and  ACE  to  a  special  purpose  subsidiary  of
EEDC.

Regulatory Matters

Approval of the merger in Delaware, New Jersey, Maryland and the District of Columbia was conditioned upon Exelon and PHI agreeing to certain commitments
including  where  applicable:  customer  rate  credits,  funding  for  energy  efficiency  and  delivery  system  modernization  programs,  a  green  sustainability  fund,
workforce development initiatives, charitable contributions, renewable generation and other required commitments. In addition, the orders approving the merger
in Delaware, New Jersey and Maryland include a “most favored nation” provision which, generally, requires allocation of merger benefits proportionally across all
the jurisdictions.

Total  nominal  cost of commitments  was $513 million excluding  renewable  generation  commitments  (approximately  $444 million on  a  net  present  value  basis
amount, excluding renewable generation commitments and charitable contributions).

During the fourth quarter of 2018, Exelon finalized the application of $5 million funding for residential and non-residential customers in the DPL Maryland service
territory.  This  resulted  in  an  adjustment  to  merger  commitment  costs  recorded  at  Exelon  Corporate  and  DPL.  Exelon  Corporate  recorded  a  decrease  of  $5
million and DPL recorded an increase of $5 million in Operating and maintenance expense.

The following amounts represent total commitment costs for Exelon, PHI, Pepco, DPL and ACE that have been recorded since the merger date:

Description

Rate credits

Energy efficiency

Charitable contributions

Delivery system modernization

Green sustainability fund

Workforce development

Other

Total commitments

Remaining commitments as of December 31,
2018

Successor

Expected Payment Period

Exelon

PHI

Pepco

DPL

ACE

2016 - 2021

2016 - 2021

2016 - 2026

Q2 2017

Q2 2017

2016 - 2020

  $

259   $

117  

50  

22  

14  

17  

29  

264   $

91   $

72   $

101

—  

50  

—  

—  

—  

6  

—  

28  

—  

—  

—  

1  

—  

12  

—  

—  

—  

5  

—

10

—

—

—

—

  $

  $

508   $

320   $

120   $

89   $

111

128   $

92   $

73   $

12   $

7

Pursuant to the orders approving the merger, Exelon made $73 million , $46 million and $49 million of equity contributions to Pepco, DPL and ACE, respectively,
in the second quarter of 2016 to fund the after-tax amounts of the customer bill credit and the customer base rate credit commitments.

In addition, Exelon is committed to develop or to assist in the commercial development of approximately 37 MWs of new solar generation in Maryland, District of
Columbia and Delaware, at an estimated cost of approximately $127 million , which will generate future earnings at Exelon and Generation. Investment costs,
which are expected to be

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

primarily capital in nature, will be recognized as incurred and recorded on Exelon's and Generation's financial statements. As of December 31, 2018, 27 MWs
were developed and Exelon and Generation have incurred costs of $83 million . Exelon has also committed to purchase 100 MWs of wind energy in PJM. DPL
has  committed  to  conducting  three  RFPs  to  procure  up  to  a  total  of  120  MWs  of  wind  RECs  for  the  purpose  of  meeting  Delaware's  renewable  portfolio
standards. DPL has conducted two of the three wind REC RFPs. The first 40 MW wind REC tranche was conducted in 2017 and did not result in a purchase
agreement. The second 40 MW wind REC tranche  was conducted  in 2018 and  resulted  in a proposed  REC purchase  agreement  that  is pending  review and
approval with the DPSC. The third and final 40 MW wind REC tranche will be conducted in 2022.

Pursuant to the various jurisdictions' merger approval conditions, over specified periods Pepco, DPL and ACE are not permitted to reduce employment levels
due to involuntary attrition associated with the merger integration process and have made other commitments regarding hiring and relocation of positions.

In  July  2015,  the  OPC,  Public  Citizen,  Inc.,  the  Sierra  Club  and  the  Chesapeake  Climate  Action  Network  (CCAN)  filed  motions  to  stay  the  MDPSC  order
approving the merger. The Circuit Court judge issued an order denying the motions for stay on August 12, 2015. On January 8, 2016, the Circuit Court judge
affirmed the MDPSC’s order approving the merger and denied the petitions for judicial review filed by the OPC, the Sierra Club, CCAN and Public Citizen, Inc. 
On January 19, 2016, the OPC filed a notice of appeal to the Maryland Court of Special Appeals, and on January 21, the Sierra Club and CCAN filed notices of
appeal. On January 27, 2017, the Maryland Court of Special Appeals affirmed the Circuit Court's judgment that the MDPSC did not err in approving the merger.
The OPC and Sierra Club filed petitions seeking further review in the Maryland Court of Appeals, which is the highest court in Maryland. On August 29, 2018, the
Maryland Court of Appeals affirmed the MDPSC's May 2015 Order approving the merger of Exelon and PHI.

Between March 25, 2016 and April 22, 2016, various parties filed motions with the DCPSC to reconsider its March 23, 2016 order approving the merger.  On
June  17,  2016,  the  DCPSC  denied  all  motions.  In  August  2016,  the  District  Legal  Entity  of  Columbia  Office  of  People’s  Counsel,  the  District  of  Columbia
Government, and Public Citizen jointly with DC Sun each filed petitions for judicial review of the DCPSC’s March 23, 2016 order with the District of Columbia
Court of Appeals. On July 20, 2017, the Court issued an opinion rejecting all of appellants’ arguments and affirming the Commission’s decision approving the
merger.

Accounting for the Merger Transaction

The total purchase price consideration for the PHI merger was approximately $7.1 billion . The excess of the purchase price over the estimated fair value of the
assets  acquired  and  the  liabilities  assumed  totaled  $4 billion ,  which  was  recognized  as  goodwill  by  PHI  and  Exelon  at  the  merger  date,  reflecting  the  value
associated with enhancing Exelon's regulated utility portfolio of businesses, including the ability to leverage experience and best practices across the utilities and
the opportunities for synergies. None of this goodwill is expected to be tax deductible. For purposes of future required impairment assessments, the goodwill has
been assigned to PHI's reportable units Pepco, DPL and ACE. See Note 10 - Intangible Assets for additional information.

Immediately following closing of the merger, $235 million of net assets associated with PHI's unregulated business interests were distributed by PHI to Exelon.
Exelon contributed $163 million of such net assets to Generation.

Rates charged to customers are established by a regulator to provide for recovery of costs and a fair return on invested capital, or rate base, generally measured
at  historical  cost.  Historical  cost  information  therefore  is  the  most  relevant  presentation  for  the  financial  statements  of  PHI’s  rate  regulated  utility  subsidiary
registrants, Pepco, DPL and ACE. As such, Exelon and PHI did not push-down the application of acquisition accounting to PHI's utility registrants, and therefore
the financial statements of Pepco, DPL and ACE do not reflect the revaluation of any assets and liabilities.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  current  impact  of  PHI,  including  its  unregulated  businesses,  in  Exelon's  Consolidated  Statements  of  Operations  and  Comprehensive  Income  includes
Operating revenues and Net Income (Loss) as follows:

Operating Revenues

Net Income (Loss)

For the Years Ended December 31,

2018

2017

2016

4,670  

453  

4,829  

364  

3,785

(66)

For the periods ended December 31, 2018 , 2017 and 2016 , the Registrants have recognized costs to achieve the PHI merger as follows:

Acquisition, Integration and Financing Costs (a)

2018

2017

2016

For the Year Ended December 31,

Exelon

Generation

ComEd (b)

PECO

BGE (b)

Pepco (b)

DPL (b)

ACE (b)

$

7   $

5  

—  

1  

1  

—  

—  

—  

16   $

22  

1  

4  

4  

(6)  

(7)  

(6)  

143

37

(6)

5

(1)

28

20

19

Successor

Predecessor

For the Year Ended December 31,

  March 24, 2016 to December 31,
2016

January 1, 2016 to 
March 23, 2016

Acquisition, Integration and Financing Costs (a)
PHI (b)
______________
(a) The  costs  incurred  are  classified  primarily  within  Operating  and  maintenance  expense  in  the  Registrants’  respective  Consolidated  Statements  of  Operations  and
Comprehensive  Income,  with  the  exception  of  the  financing  costs,  which  are  included  within  Interest  expense.  Costs  do  not  include  merger  commitments  discussed
above.

69     $

(18)   $

—   $

29

$

2018

2017

(b) For the year ended December 31, 2017 , includes deferrals of previously incurred integration costs as regulatory assets of  $24 million , $8 million , $8 million , and $8
million at PHI, Pepco, DPL and ACE, respectively. For the year ended December 31, 2016 , includes deferrals of previously incurred integration costs as regulatory assets
of $8 million , $6 million , $11 million and $4 million at ComEd, BGE, Pepco and DPL, respectively. For the Successor period March 24, 2016 to December 31, 2016 ,
includes deferrals of previously incurred integration costs as regulatory assets of $16 million at PHI. See Note 4 - Regulatory Matters for additional information.

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Pro-forma Impact of the Merger

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  following  unaudited  pro-forma  financial  information  reflects  the  consolidated  results  of  operations  of  Exelon  as  if  the  PHI  merger  had  taken  place  on
January 1, 2015 . The unaudited pro forma information was calculated after applying Exelon’s accounting policies and adjusting PHI’s results to reflect purchase
accounting adjustments.

The  unaudited  pro-forma  financial  information  has  been  presented  for  illustrative  purposes  only  and  is  not  necessarily  indicative  of  results  of  operations  that
would have been achieved had the merger events taken place on the dates indicated, or future consolidated results of operations of the combined company.

Total operating revenues

Net income attributable to common shareholders

Basic earnings per share

Year Ended December 31,

2016 (a)

2015 (b)

32,342   $

1,562  

33,823

2,618

1.69   $

2.85

$

$

Diluted earnings per share
______________
(a) The amounts above exclude non-recurring costs directly related to the merger of $680 million and intercompany revenue of $171 million for the year ended December 31,

2.84

1.69  

2016 .

(b) The amounts above exclude non-recurring costs directly related to the merger of $92 million and intercompany revenue of $559 million for the year ended December 31,

2015 .

Disposition of Oyster Creek (Exelon and Generation)

On July 31, 2018, Generation entered into an agreement with Holtec International (Holtec) and its indirect wholly owned subsidiary, Oyster Creek Environmental
Protection,  LLC  (OCEP),  for  the  sale  and  decommissioning  of  the  Oyster  Creek  Generating  Station  (Oyster  Creek)  located  in  Forked  River,  New  Jersey.  On
September 17, 2018, Oyster Creek permanently ceased generation operations.

Under  the  terms  of  the  transaction,  Generation  will  transfer  to  OCEP  substantially  all  the  assets  associated  with  Oyster  Creek,  including  assets  held  in  NDT
funds, along with the assumption of liability for all responsibility for the site, including full decommissioning and ongoing management of spent fuel until the spent
fuel  is  moved  offsite.  In  addition  to  the  assumption  of  liability  for  the  full  decommissioning  and  ongoing  management  of  spent  fuel,  other  consideration  to  be
received in the transaction is contingent on several factors, including a requirement that Generation deliver a minimum NDT fund balance at closing, subject to
adjustment for specific terms that include income taxes that would be imposed on any net unrealized built-in gains and certain decommissioning activities to be
performed  during  the  pre-close  period  after  the  unit  shuts  down  in  the  fall  of  2018  and  prior  to  the  anticipated  close  of  the  transaction.  The  terms  of  the
transaction  also  include  various  forms  of  performance  assurance  for  the  obligations  of  OCEP  to  timely  complete  the  required  decommissioning,  including  a
parental guaranty from Holtec for all performance and payment obligations of OCEP, and a requirement for Holtec to deliver a letter of credit to Generation upon
the occurrence of specified events.

As a result of the transaction, in 2018, Exelon and Generation reclassified certain Oyster Creek assets and liabilities in Exelon’s and Generation’s Consolidated
Balance Sheets as held for sale at their respective fair values. At December 31, 2018 Generation has $897 million and $777 million of Assets held for sale and
Liabilities  held  for  sale,  respectively,  for  Oyster  Creek.  Upon  remeasurement  of  the  Oyster  Creek  ARO  in  2018,  Exelon  and  Generation  recognized  an  $84
million pre-tax charge to Operating and maintenance expense. See Note 15 - Asset Retirement Obligations for additional information.

Completion of the transaction contemplated by the sale agreement is subject to the satisfaction of several closing conditions, including approval of the license
transfer from the NRC and other regulatory approvals, and the receipt of a private letter ruling from the IRS. Generation currently anticipates satisfaction of the
closing conditions to occur in the second half of 2019.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Disposition of EGTP and Acquisition of Handley Generating Station (Exelon and Generation)

EGTP,  a  Delaware  limited  liability  company,  was  formed  in  2014  with  the  purpose  of  financing  a  portfolio  of  assets  comprised  of  two  combined-cycle  gas
turbines  (CCGTs)  and  three  peaking/simple  cycle  facilities  consisting  of  approximately  3.4  GW  of  generation  capacity  in  ERCOT  North  and  Houston  Zones.
EGTP was an indirect wholly owned subsidiary of Exelon and Generation.

EGTP’s operating cash flows were negatively impacted by certain market conditions and the seasonality of its cash flows. On May 2, 2017, as a result of the
negative impacts of certain market conditions and the seasonality of its cash flows, EGTP entered into a consent agreement with its lenders to permit EGTP to
draw on its revolving credit facility and initiate an orderly sales process to sell the assets of its wholly owned subsidiaries. As a result, Exelon and Generation
classified certain of EGTP assets and liabilities as held for sale at their respective fair values less costs to sell and recorded a $460 million pre-tax impairment
loss.  See  Note  13 - Debt  and  Credit  Agreements  for  details  regarding  the  nonrecourse  debt  associated  with  EGTP  and  Note  7 - Impairment  of  Long-Lived
Assets and Intangibles for additional information.

On November 7, 2017, EGTP and all of its wholly owned subsidiaries filed voluntary petitions for relief under Chapter 11 of Title 11 of the United States Code in
the  United  States  Bankruptcy  Court  for  the  District of  Delaware,  which resulted  in Exelon  and  Generation  deconsolidating  EGTP's  assets  and  liabilities from
their consolidated financial statements in the fourth quarter of 2017 that resulted in a pre-tax gain upon deconsolidation of $213 million . Concurrently with the
Chapter 11 filings, Generation entered into an asset purchase agreement to acquire one of EGTP's generating plants, the Handley Generating Station, subject
to a potential adjustment for fuel oil and assumption of certain liabilities. In the Chapter 11 Filings, EGTP requested that the proposed acquisition of the Handley
Generating Station be consummated through a court-approved and supervised sales process. The acquisition closed on April 4, 2018 for a purchase price of
$62  million  .  The  Chapter  11  bankruptcy  proceedings  were  finalized  on  April  17,  2018,  resulting  in  the  ownership  of  EGTP  assets  (other  than  the  Handley
Generating Station) being transferred to EGTP's lenders.

Other Asset Dispositions (Exelon, Generation, DPL and Pepco)

In December  2017, Generation  entered  into an agreement  to sell its interest in an electrical contracting  business that  primarily installs, maintains  and repairs
underground and high-voltage cable transmission and distribution systems. As a result, as of December 31, 2017, certain assets and liabilities were classified as
held  for  sale  and  included  in  the  Other  current  assets  and  Other  current  liabilities  balances  in  Exelon's  and  Generation's  Consolidated  Balance  Sheet.  On
February 28, 2018, Generation completed the sale of its interest for $87 million , resulting in a pre-tax gain which is included within Gain on sales of assets and
businesses in Exelon's and Generation's Consolidated Statements of Operations and Comprehensive Income. In June 2018, additional proceeds were received,
and  a  pre-tax  gain  was  recorded  within  Gain  on  sales  of  assets  and  businesses  in  Exelon's  and  Generation's  Consolidated  Statements  of  Operations  and
Comprehensive Income.

During the fourth quarter of 2016, as part of its continual assessment of growth and development opportunities, Generation reevaluated and in certain instances
terminated or renegotiated certain projects and contracts. As a result, a pre-tax loss of $69 million was recorded within Loss on sales of assets and businesses
and pre-tax impairment charges of $23 million was recorded within Operating and maintenance expense in Exelon’s and Generation’s Consolidated Statements
of Operations and Comprehensive Income.

On June 16, 2016, Generation initiated the sales process of its Upstream business by executing a forbearance agreement with the lenders of the nonrecourse
debt. See Note 13 - Debt and Credit Agreements for additional information. In December 2016, Generation sold substantially all of the Upstream assets for $37
million which resulted in a pre-tax loss on sale of $10 million which is included in Gain (loss) on sales of assets and businesses in Exelon’s and Generation’s
Consolidated Statements of Operations and Comprehensive Income.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

6. Property, Plant and Equipment (All Registrants)

Exelon

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Electric—generation

Gas—transportation and distribution

Common—electric and gas

Nuclear fuel (a)

Construction work in progress

Other property, plant and equipment (b)

Total property, plant and equipment

Less: accumulated depreciation (c)

Property, plant and equipment, net

Average 
Service Life
(years)

5-90

1-56

5-90

5-75

1-8

N/A

1-50

2018

2017

  $

  $

53,090   $

29,170  

5,530  

1,627  

5,957  

3,377  

858  

99,609  

22,902  

76,707   $

49,506

29,019

5,050

1,447

6,420

2,825

999

95,266

21,064

74,202

__________
(a)
(b)

Includes nuclear fuel that is in the fabrication and installation phase of $1,004 million and $1,196 million at December 31, 2018 and 2017 , respectively.
Includes Generation’s buildings under capital lease with a net carrying value of $5 million and $7 million at December 31, 2018 and 2017 , respectively. The original cost
basis of the buildings was $47 million as of both December 31, 2018 and 2017 , and total accumulated amortization was $42 million and $40 million , as of December 31,
2018 and 2017 , respectively.  Also  includes  ComEd’s  buildings  under  capital  lease  with  a net  carrying  value  at  both  December 31, 2018  and 2017 of $7 million . The
original cost basis of the buildings was $8 million and total accumulated amortization was $1 million as of both December 31, 2018 and 2017 . Includes land held for future
use and non-utility property at ComEd, PECO, BGE, Pepco, DPL and ACE of $39 million , $19 million , $25 million , $61 million , $17 million and $28 million , respectively,
at December 31, 2018 .
Includes accumulated amortization of nuclear fuel in the reactor core at Generation of $2,969 million and $3,159 million as of December 31, 2018 and 2017 , respectively.

(c)

The following table presents the annual depreciation provisions as a percentage of average service life for each asset category.

Average Service Life Percentage by Asset Category

Electric—transmission and distribution

Electric—generation (a)

Gas

2018

2017

2016

2.73%  

5.37%  

2.07%  

2.75%  

4.36%  

2.10%  

2.73%

5.94%

2.17%

Common—electric and gas
__________
(a) See Note 8 — Early Plant Retirements for additional information on the accelerated net depreciation and amortization of Clinton, Quad Cities, Oyster Creek and TMI.

7.05%  

6.98%  

7.41%

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Generation

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—generation

Nuclear fuel (a)

Construction work in progress

Other property, plant and equipment (b)

Total property, plant and equipment

Less: accumulated depreciation (c)

Property, plant and equipment, net

Average 
Service Life
(years)

1-56

1-8

N/A

1-8

2018

2017

  $

29,170   $

5,957  

997  

63  

36,187  

12,206  

  $

23,981   $

29,019

6,420

838

57

36,334

11,428

24,906

__________
(a)
(b)

Includes nuclear fuel that is in the fabrication and installation phase of $1,004 million and $1,196 million at December 31, 2018 and 2017 , respectively.
Includes buildings under capital lease with a net carrying value of $5 million and $7 million at December 31, 2018 and 2017 , respectively. The original cost basis of the
buildings was $47 million as of both December 31, 2018 and 2017 , and total accumulated amortization was $42 million and $40 million , as of December 31, 2018 and
2017 , respectively.
Includes accumulated amortization of nuclear fuel in the reactor core of $2,969 million and $3,159 million as of December 31, 2018 and 2017 , respectively.

(c)

The annual depreciation provisions as a percentage of average service life for electric generation assets were 5.37% , 4.36% and 5.94% for the years ended
December  31,  2018  , 2017 and 2016 ,  respectively.  See  Note  8 — Early  Plant  Retirements  for  additional  information  on  the  accelerated  depreciation  and
amortization of Clinton, Quad Cities, Oyster Creek and TMI.

License Renewals

Depreciation provisions are based on the estimated useful lives of the stations, which reflect the actual renewal of the operating licenses for all of Generation's
operating  nuclear  generating  stations  except  for  TMI  and  Clinton.  As  a  result,  the  receipt  of  license  renewals  has  no  material  impact  in  the  Consolidated
Statements of Operations and Comprehensive Income. Beginning in 2017, TMI and Oyster Creek depreciation provisions were based on their 2019 expected
shutdown  dates.  Beginning  February  2018,  Oyster  Creek  depreciation  provisions  were  based  on  its  announced  shutdown  date  of  September  2018.  Clinton
depreciation  provisions  are  based  on  an  estimated  useful  life  through  2027  which  is  the  last  year  of  the  Illinois  Zero  Emissions  Standard.  See  Note  4  —
Regulatory Matters for additional information regarding license renewals and the Illinois ZECs and Note 8 — Early Plant Retirements for additional information
on the impacts of expected and potential early plant retirement.

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ComEd

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Construction work in progress

Other property, plant and equipment (a), (b)

Total property, plant and equipment

Less: accumulated depreciation

Property, plant and equipment, net

Average 
Service Life
(years)

5-80

N/A

35-50

2018

2017

  $

25,991   $

705  

46  

26,742  

4,684  

22,058   $

  $

24,423

517

52

24,992

4,269

20,723

__________
(a)

Includes buildings under capital lease with a net carrying value at both December 31, 2018 and 2017 of $7 million . The original cost basis of the buildings was $8 million
and total accumulated amortization was $1 million as of both December 31, 2018 and 2017 .

(b) Represents land held for future use and non-utility property.

The annual depreciation provisions as a percentage of average service life for electric transmission and distribution assets were 2.95% , 2.99% and 3.03% for
the years ended December 31, 2018 , 2017 and 2016 , respectively.

PECO

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Gas—transportation and distribution

Common—electric and gas

Construction work in progress

Other property, plant and equipment (a)

Total property, plant and equipment

Less: accumulated depreciation

Property, plant and equipment, net

__________
(a) Represents land held for future use and non-utility property.

Average 
Service Life
(years)

5-65

5-70

5-50

N/A

50

2018

2017

  $

  $

8,359   $

2,694  

756  

343  

19  

12,171  

3,561  

8,610   $

7,975

2,504

710

254

21

11,464

3,411

8,053

The following table presents the annual depreciation provisions as a percentage of average service life for each asset category.

Average Service Life Percentage by Asset Category

Electric—transmission and distribution

Gas

Common—electric and gas

2018

2017

2016

2.35%  

1.90%  

5.44%  

2.37%  

1.89%  

5.47%  

2.32%

1.82%

5.11%

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BGE

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Gas—distribution

Common—electric and gas

Construction work in progress

Other property, plant and equipment (a)

Total property, plant and equipment

Less: accumulated depreciation

Property, plant and equipment, net

Average 
Service Life
(years)

5-90

5-90

5-40

N/A

20

2018

2017

  $

  $

7,951   $

2,630  

860  

410  

25  

11,876  

3,633  

8,243   $

7,464

2,379

771

367

26

11,007

3,405

7,602

__________
(a) Represents plant held for future use and non-utility property.

The following table presents the annual depreciation provisions as a percentage of average service life for each asset category.

Average Service Life Percentage by Asset Category

Electric—transmission and distribution

Gas

Common—electric and gas

PHI

2018

2017

2016

2.61%  

2.36%  

8.50%  

2.58%  

2.33%  

8.64%  

2.56%

2.45%

9.45%

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Gas—distribution

Common—electric and gas

Construction work in progress

Other property, plant and equipment (a)

Total property, plant and equipment

Less: accumulated depreciation

Property, plant and equipment, net

__________
(a) Represents plant held for future use and non-utility property.

312

Average  
Service Life 
(years)

5-75

5-75

5-75

N/A

3-43

2018

2017

  $

12,664   $

11,517

486  

126  

912  

99  

14,287

841  

13,446

$

449

82

835

102

12,985

487

12,498

  $

 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table presents the annual depreciation provisions as a percentage of average service life for each asset category.

Average Service Life Percentage by Asset Category

Electric—transmission and distribution

Gas

Common—electric and gas

Pepco

2018

2017

2016

2.61%  

1.59%  

6.30%  

2.63%  

2.07%  

6.50%  

2.52%

2.57%

8.12%

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Construction work in progress

Other property, plant and equipment  (a)

Total property, plant and equipment

Less: accumulated depreciation

Property, plant and equipment, net

__________
(a) Represents plant held for future use and non-utility property.

Average 
Service Life
(years)

5-75

N/A

25-33

2018

2017

  $

9,217   $

536  

61  

9,814

3,354  

  $

6,460

$

8,646

473

59

9,178

3,177

6,001

The annual depreciation provisions as a percentage of average service life for electric transmission and distribution assets were 2.40% , 2.35% and 2.17% for
the years ended December 31, 2018 , 2017 and 2016 , respectively.

DPL

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Gas—distribution

Common—electric and gas

Construction work in progress

Other property, plant and equipment (a)

Total property, plant and equipment

Less: accumulated depreciation

Property, plant and equipment, net

__________
(a) Represents plant held for future use and non-utility property.

313

Average
Service Life
(years)

5-70

5-75

5-75

N/A

10-43

2018

2017

  $

4,195   $

651  

136  

151  

17  

5,150

1,329  

3,821

$

  $

3,875

614

117

205

15

4,826

1,247

3,579

 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table presents the annual depreciation provisions as a percentage of average service life for each asset category.

Average Service Life Percentage by Asset Category

Electric—transmission and distribution

Gas

Common—electric and gas

ACE

2018

2017

2016

2.77%  

1.59%  

3.70%  

2.75%  

2.07%  

4.14%  

2.49%

2.57%

4.99%

The following table presents a summary of property, plant and equipment by asset category as of December 31, 2018 and 2017 :

Asset Category

Electric—transmission and distribution

Construction work in progress

Other property, plant and equipment (a)

Total property, plant and equipment

Less: accumulated depreciation

Property, plant and equipment, net

__________
(a) Represents plant held for future use and non-utility property.

Average 
Service Life
(years)

5-60

N/A

13-15

2018

2017

  $

3,866   $

209  

28  

4,103

1,137  

  $

2,966

$

3,607

138

27

3,772

1,066

2,706

The annual depreciation provisions as a percentage of average service life for electric transmission and distribution assets were 2.45% , 2.46% and 2.45% for
the years ended December 31, 2018 , 2017 and 2016 , respectively.

Capitalized Software Costs (All Registrants)

The following tables presents net unamortized capitalized software costs and amortization of capitalized software costs by year.

Net unamortized software costs

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

December 31, 2018

December 31, 2017

$

810   $

164   $

206   $

98   $

166   $

165   $

26   $

21   $

834  

173  

227  

111  

179  

133  

2  

1  

14

1

Amortization of capitalized software costs

Exelon

Generation

ComEd

PECO

BGE 

Pepco

DPL

ACE

2018

2017

2016

PHI

$

282   $

78   $

79   $

37   $

48   $

2   $

2   $

270  

255  

73  

72  

73  

62  

39  

33  

46  

44  

—  

—  

—  

—  

1

—

—

Successor

Predecessor

For the year ended December
31, 2018

For the year ended December
31, 2017

March 24, 2016 to December
31, 2016

    January 1, 2016 to March 23, 2016
8

29     $

Amortization of capitalized software costs

$

33   $

34   $

314

 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Capitalized Interest and AFUDC (All Registrants)

The following table summarizes total incurred interest, capitalized interest and credits to AFUDC by year:

2018

Total incurred interest (a)

Capitalized interest

Credits to AFUDC debt and equity

2017

Total incurred interest (a)

Capitalized interest

Credits to AFUDC debt and equity

2016

Total incurred interest (a)

Capitalized interest

Credits to AFUDC debt and equity

Exelon

Generation

ComEd

PECO

BGE

$ 1,695   $

464   $

377   $

141   $

130   $

Pepco

DPL
ACE
162   $ 62   $ 68

31  

109  

31  

—  

—  

30  

—  

12  

—  

24  

—  

34  

—  

4  

—

4

$ 1,658   $

502   $

369   $

130   $

111   $

133   $ 54   $ 64

63  

108  

63  

—  

—  

20  

—  

12  

—  

22  

—  

34  

—  

10  

—

9

$ 1,678   $

472   $

469   $

127   $

114   $

137   $ 52   $ 65

108  

98  

107  

—  

Successor

—  

22  

—  

11  

—  

30  

—  

29  

—  

7  

—

9

Predecessor

PHI

For the year ended December
31, 2018

For the year ended December
31, 2017

March 24, 2016 to December
31, 2016

January 1, 2016 to March 23,
2016

Total incurred interest (a)

$

Credits to AFUDC debt and equity
__________
(a)

Includes interest expense to affiliates.

305   $

44  

263   $

54  

207     $

35    

68

10

See  Note  1 — Significant  Accounting  Policies  for  additional  information  regarding  property,  plant  and  equipment  policies.  See  Note  13 — Debt  and  Credit
Agreements for additional information regarding Exelon’s, ComEd’s and PECO’s property, plant and equipment subject to mortgage liens.

7. Impairment of Long-Lived Assets and Intangibles (Exelon, Generation and PHI)

Long-Lived Assets (Exelon, Generation and PHI)

Registrants evaluate long-lived assets for recoverability whenever events or changes in circumstances indicate that the carrying amount may not be recoverable.
In the second quarter of 2018, updates to Exelon's long-term view of energy and capacity prices suggested that the carrying value of a group of merchant wind
assets,  located  in  West  Texas,  may  be  impaired.  Upon  review,  the  estimated  undiscounted  future  cash  flows  and  fair  value  of  the  group  were  less  than  its
carrying  value.  The  fair  value  analysis  was  based  on  the  income  approach  using  significant  unobservable  inputs  (Level  3)  including  revenue  and  generation
forecasts, projected capital and maintenance expenditures and discount rates. As a result, long-lived merchant wind assets held and used with a net carrying
amount of $41 million were fully impaired and a pre-tax impairment charge of $41 million was recorded during 2018 within Operating and maintenance expense
in Exelon's and Generation's Consolidated Statements of Operations and Comprehensive Income.

During the first quarter of 2018, Mystic Unit 9 did not clear in the ISO-NE capacity auction for the 2021 - 2022 planning year. On March 29, 2018, Generation
notified  ISO-NE  of  the  early  retirement  of  its  Mystic  Generating  Station's  Units  7,  8,  9  and  the  Mystic  Jet  Unit  (Mystic  Generating  Station  assets)  absent
regulatory  reforms.  These  events  suggested  that  the  carrying  value  of  its  New  England  asset  group  may  be  impaired.  As  a  result,  Generation  completed  a
comprehensive  review  of  the  estimated  undiscounted  future  cash  flows  of  the  New  England  asset  group  and  no  impairment  charge  was  required.  Further
developments such as the failure of ISO-NE to adopt long-term solutions for reliability and fuel security could potentially result in future impairments of the New
England asset group, which could be material. See Note 8 — Early Plant Retirements for additional information.

In the third quarter of 2015, PHI entered into a sponsorship agreement with the District of Columbia for future sponsorship rights associated with public property
within  the  District  of  Columbia  and  paid  the  District  of  Columbia  $25  million  ,  which  Exelon  and  PHI  had  recorded  as  a  finite-lived  intangible  asset  as  of
December 31, 2016. The specific sponsorship rights were to be determined over time through future negotiations. In the fourth quarter of

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

2017,  based  upon  the  lack  of  currently  available  sponsorship  opportunities,  the  asset  was  written  off  and  a  pre-tax  impairment  charge  of  $25  million  was
recorded within Operating and maintenance expense in Exelon’s and PHI’s Consolidated Statements of Operations and Comprehensive Income.

On May 2, 2017, EGTP entered into a consent agreement with its lenders to initiate an orderly sales process to sell the assets of its wholly owned subsidiaries.
As a result, Exelon and Generation classified certain of EGTP's assets and liabilities as held for sale at their respective fair values less costs to sell and recorded
a  pre-tax  impairment  charge  of  $460 million within  Operating  and  maintenance  expense  in  their  Consolidated  Statements  of  Operations  and  Comprehensive
Income during 2017. On November 7, 2017, EGTP and its wholly owned subsidiaries filed voluntary petitions for relief under Chapter 11 of Title 11 of the United
States  Code  in  the  United  States  Bankruptcy  Court  for  the  District  of  Delaware  and,  as  a  result,  Exelon  and  Generation  deconsolidated  EGTP's  assets  and
liabilities from their consolidated financial statements. See Note 5 — Mergers, Acquisitions and Dispositions for additional information.

In the second quarter of 2016, updates to Exelon's long-term view of energy and capacity prices suggested that the carrying value of a group of merchant wind
assets, located in West Texas, may be impaired.  Upon review, the estimated undiscounted future cash flows and fair value of the group were less than their
carrying value.   The fair value analysis was based on the income approach  using significant unobservable  inputs (Level 3) including revenue  and generation
forecasts, projected capital and maintenance expenditures and discount rates. As a result of the fair value analysis, long-lived merchant wind assets held and
used with a carrying amount of approximately $60 million were written down to their fair value of $24 million and a pre-tax impairment charge of $36 million was
recorded during the second quarter of 2016 in Operating and maintenance expense in Exelon’s and Generation’s Consolidated Statements of Operations and
Comprehensive Income. 

In the first quarter of 2016, significant changes in Generation’s intended use of the Upstream oil and gas assets, developments with nonrecourse debt held by its
Upstream  subsidiary  CEU  Holdings,  LLC  (as  described  in  Note  13 — Debt and Credit Agreements ) and continued  declines in both production  volumes and
commodity prices suggested that the carrying value may be impaired. Generation concluded that the estimated undiscounted future cash flows and fair value of
its  Upstream  properties  were  less  than  their  carrying  values.  As  a  result,  a  pre-tax  impairment  charge  of  $119  million  was  recorded  in  March  2016  within
Operating  and  maintenance  expense  in  Exelon’s  and  Generation’s  Consolidated  Statements  of  Operations  and  Comprehensive  Income.  On  June  16,  2016,
Generation initiated the sales process of its Upstream natural gas and oil exploration and production business by executing a forbearance agreement with the
lenders of the nonrecourse debt, see Note 13 — Debt and Credit Agreements for additional information. An additional pre-tax impairment charge of $15 million
was  recorded  in  September  2016  within  Operating  and  maintenance  expense  in  Exelon’s  and  Generation’s  Consolidated  Statements  of  Operations  and
Comprehensive  Income  due  to  further  declines  in  fair  value.  In  December  2016,  Generation  sold  substantially  all  of  the  Upstream  Assets.  See  Note  5  —
Mergers, Acquisitions and Dispositions for additional information.

The fair value analysis used  in the  above impairments was primarily based on the income approach  using significant  unobservable  inputs (Level 3) including
revenue,  generation  and  production  forecasts,  projected  capital  and  maintenance  expenditures  and  discount  rates.  Changes  in  the  assumptions  described
above could potentially result in future impairments of Exelon’s long-lived assets, which could be material.

Like-Kind Exchange Transaction (Exelon)

In June 2000, UII, LLC (formerly Unicom Investments, Inc.) (UII), a wholly owned subsidiary of Exelon Corporation, entered into transactions pursuant to which
UII invested in coal-fired generating station leases (Headleases) with the Municipal Electric Authority of Georgia (MEAG). The generating stations were leased
back to MEAG as part of the transactions (Leases).

Pursuant  to  the  applicable  authoritative  guidance,  Exelon  is required  to  review the  estimated  residual values  of  its direct  financing  lease  investments  at  least
annually  and  record  an  impairment  charge  if  the  review indicates  an other-than-temporary  decline in the  fair  value  of the  residual values  below their  carrying
values. Exelon estimates the fair value of the residual values of its direct financing lease investments based on the income approach, which uses a discounted
cash flow analysis, taking into consideration significant unobservable inputs (Level 3) including the expected revenues to be generated and costs to be incurred
to  operate  the  plants  over  their  remaining  useful  lives  subsequent  to  the  lease  end  dates.  Significant  assumptions  used  in  estimating  the  fair  value  include
fundamental energy and capacity prices, fixed and variable costs, capital expenditure requirements, discount rates, tax rates and the estimated remaining useful
lives of the plants. The estimated fair values also reflect the cash

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

flows associated with the service contract option discussed above given that a market participant would take into consideration all of the terms and conditions
contained in the lease agreements.

All the Headleases were terminated by the second quarter of 2016, and no events occurred prior to the termination that required Exelon to review the estimated
residual  values  of  the  direct  financing  lease  investments  in  2016.  On  March  31,  2016,  UII  and  MEAG  finalized  an  agreement  to  terminate  the  MEAG
Headleases,  the  MEAG  Leases,  and  other  related  agreements  prior  to  their  expiration  dates.  As  a  result  of  the  lease  termination,  UII  received  an  early
termination  payment  of  $360  million  from  MEAG  and  wrote-off  the  $356  million  net  investment  in  the  MEAG  Headleases  and  the  Leases.  The  transaction
resulted  in  a  pre-tax  gain  of  $4  million  which  is  reflected  in  Operating  and  maintenance  expense  in  Exelon's  Consolidated  Statements  of  Operations  and
Comprehensive Income. See Note 14 — Income Taxes for additional information.

8. Early Plant Retirements (Exelon and Generation)

Exelon and Generation continuously evaluate factors that affect the current and expected economic value of Generation’s plants, including, but not limited to:
market  power  prices,  results  of  capacity  auctions,  potential  legislative  and  regulatory  solutions  to  ensure  plants  are  fairly  compensated  for  the  benefits  they
provide through their carbon-free emissions, reliability, or fuel security, and the impact of potential rules from the EPA requiring reduction of carbon and other
emissions  and  the  efforts  of  states  to  implement  those  final  rules.  The  precise  timing  of  an  early  retirement  date  for  any  plant,  and  the  resulting  financial
statement  impacts,  may  be  affected  by  many  factors,  including  the  status  of  potential  regulatory  or  legislative  solutions,  results  of  any  transmission  system
reliability study  assessments,  the  nature  of  any  co-owner  requirements  and  stipulations,  and  NDT fund  requirements  for  nuclear  plants,  among  other  factors.
However,  the  earliest  retirement  date  for  any  plant  would  usually  be  the  first  year  in  which  the  unit  does  not  have  capacity  or  other  obligations,  and  where
applicable, just prior to its next scheduled nuclear refueling outage.

Nuclear Generation

In 2015 and 2016, Generation identified the Clinton and Quad Cities nuclear plants in Illinois, Ginna and Nine Mile Point nuclear plants in New York and Three
Mile Island nuclear plant in Pennsylvania as having the greatest risk of early retirement based on economic valuation and other factors.

On June 2, 2016, Generation announced it would shutdown the Clinton and Quad Cities nuclear plants on June 1, 2017 and June 1, 2018, respectively, given a
lack  of  progress  on  Illinois  energy  legislation  and  MISO  market  reforms,  and  capacity  auctions  results  that  failed  to  cover  cash  operating  costs  and  a  risk-
adjusted rate of return to shareholders.

On December 7, 2016, Illinois FEJA was signed into law by the Governor of Illinois and included a ZES that now provides compensation to Clinton and Quad
Cities for the carbon-free attributes of their production through 2027. With the passage of the Illinois ZES in December 2016, Generation reversed its June 2016
decision to permanently cease generation operations at the Clinton and Quad Cities nuclear generating plants. Clinton and Quad Cities are currently licensed to
operate through 2026 and 2032, respectively. See Note 4 - Regulatory Matters for additional information on the Illinois FEJA and the ZES.

In New York, the Ginna and Nine Mile Point nuclear plants faced similar economic challenges and on August 1, 2016, the NYPSC issued an order adopting the
CES, which now provides payments to Ginna and Nine Mile Point, as well as FitzPatrick, for the environmental attributes of their production through 2029. Ginna
and  Nine  Mile  Point  Unit  1  are  currently  licensed  to  operate  through  2029,  and  Nine  Mile  Point  Unit  2  through  2046.  See  Note  4 - Regulatory  Matters  for
additional information on the New York CES.

Assuming the continued  effectiveness  of both the Illinois ZES and the New York CES, Generation  and CENG, through  its ownership of Ginna and Nine Mile
Point, no longer consider Clinton, Quad Cities, Ginna or Nine Mile Point to be at heightened risk for early retirement. However, to the extent either the Illinois
ZES or the New York CES programs do not operate as expected over their full terms, each of these plants could again be at heightened risk for early retirement,
which could have a material impact on Exelon’s and Generation’s future financial statements.

In Pennsylvania, the TMI nuclear plant failed to clear in the May 2017 PJM capacity auction for the 2020-2021 planning year, the third consecutive year that TMI
failed  to  clear  in  the  PJM base  residual  capacity  auction  and  on  May  30,  2017,  based  on  these  capacity  auction  results,  prolonged  periods  of  low wholesale
power prices, and the

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(Dollars in millions, except per share data unless otherwise noted)

absence  of  federal  or  state  policies  that  place  a  value  on  nuclear  energy  for  its  ability  to  produce  electricity  without  air  pollution,  Exelon  announced  that
Generation will permanently cease generation operations at TMI on or about September 30, 2019. TMI is currently committed to operate through May 2019 and
is licensed to operate through 2034. Generation has filed the required market and regulatory notifications to shutdown the plant. PJM has subsequently notified
Generation that it has not identified any reliability issues and has approved the deactivation of TMI as proposed.

In 2010, Generation  announced that Oyster Creek would retire by the end of 2019 as part of an agreement  with the State of New Jersey to avoid significant
costs  associated  with  the  construction  of  cooling  towers  to  meet  the  State's  then  new  environmental  regulations.  Since  then,  like  other  nuclear  sites,  Oyster
Creek  continued  to  face  rising  operating  costs  amid  a  historically  low  wholesale  power  price  environment.  On  February  2,  2018,  Exelon  announced  that
Generation will permanently cease generation operations at the Oyster Creek nuclear plant at the end of its current operating cycle and permanently ceased
generation operations in September 2018.

As  a  result  of  these  early  nuclear  plant  retirement  decisions,  Exelon  and  Generation  recognized  one-time  charges  in  Operating  and  maintenance  expense
related to materials and supplies inventory reserve adjustments, employee-related costs and CWIP impairments, among other items. In addition to these one-
time charges, annual incremental non-cash charges to earnings stemming from shortening the expected economic useful lives primarily related to accelerated
depreciation of plant assets (including any ARC), accelerated amortization of nuclear fuel, and additional ARO accretion expense associated with the changes in
decommissioning timing and cost assumptions were also recorded. See Note 15 — Asset Retirement Obligations for additional information on changes to the
nuclear decommissioning ARO balance. The total annual impact of these charges by year are summarized in the table below.

Income statement expense (pre-tax)

Depreciation and Amortization

Accelerated depreciation (d)

Accelerated nuclear fuel amortization

Operating and Maintenance

One-time charges (e,f)

Change in ARO accretion, net of any contractual offset (g)

Contractual offset for ARC depreciation (g)

Total

2018 (a)

2017 (b)

2016 (c)

  $

539   $

57  

250   $

12  

32  

—  

—  

77  

—  

—  

  $

628   $

339   $

712

60

26

2

(86)

714

_________
(a) Reflects incremental accelerated depreciation for TMI and Oyster Creek. The Oyster Creek year-to-date amounts are from February 2, 2018 through September 17, 2018.
(b) Reflects incremental charges for TMI including incremental accelerated depreciation and amortization from May 30, 2017 through December 31, 2017.
(c) Reflects incremental charges for Clinton and Quad Cities including incremental accelerated depreciation and amortization from June 2, 2016 through December 6, 2016.
In December 2016, as a result of reversing its retirement decision for Clinton and Quad Cities, Exelon and Generation updated the expected economic useful life for both
facilities,  to  2027  for  Clinton,  commensurate  with  the  end  of  the  Illinois  ZES,  and  to  2032  for  Quad  Cities,  the  end  of  its  current  operating  license.  Depreciation  was
therefore adjusted beginning December 7, 2016, to reflect these extended useful life estimates.

(d) Reflects incremental accelerated depreciation of plant assets, including any ARC.
(e) Primarily  includes  materials  and  supplies  inventory  reserve  adjustments,  employee  related  costs  and  CWIP  impairments.  Excludes  the  charge  to  Operating  and
maintenance  expense  from  the  ARO  remeasurement  due  to  the  announced  sale  of  Oyster  Creek.  See  Note  5 — Mergers, Acquisitions  and Dispositions  for additional
information.
In June 2016, as a result of the retirement decision for Clinton and Quad Cities, Exelon and Generation recognized one-time charges of $146 million . In December 2016,
as a result of reversing its retirement decision for Clinton and Quad Cities, Exelon and Generation reversed approximately $120 million of these one-time charges initially
recorded in June 2016.

(f)

(g) For Quad Cities based on the regulatory agreement with the ICC, decommissioning-related activities are offset within Exelon's and Generation's Consolidated Statements
of  Operations  and  Comprehensive  Income.  The  offset  results  in  an  equal  adjustment  to  the  noncurrent  payables  to  ComEd  at  Generation  and  an  adjustment  to  the
regulatory liabilities at ComEd. Likewise, ComEd has recorded an equal noncurrent affiliate receivable from Generation and corresponding regulatory liability.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

In 2017, PSEG made public similar financial challenges facing its New Jersey nuclear plants, including Salem, of which Generation owns a 42.59% ownership
interest. PSEG is the operator of Salem and also has the decision making authority to retire Salem.

On May 23, 2018, New Jersey enacted legislation that established a ZEC program, similar to that in Illinois and New York, that will provide compensation for
nuclear plants that demonstrate to the NJBPU that they meet certain requirements, including that they make a significant contribution to air quality in the state
and that their revenues are insufficient to cover their costs and risks. The NJBPU must complete its processes for determining eligibility for, and participation in,
the ZEC program by April 18, 2019. On December 19, 2018, PSEG submitted its application for Salem. Assuming the successful implementation of the New
Jersey ZEC program and the selection of Salem as one of the qualifying facilities, the New Jersey ZEC program has the potential to mitigate the heightened risk
of earlier retirement for Salem. See Note  4 - Regulatory Matters  for additional information.

The  following  table  provides  the  balance  sheet  amounts  as  of  December  31,  2018  for  Generation’s  ownership  share  of  the  significant  assets  and  liabilities
associated with Salem that would potentially be impacted by a decision to permanently cease generation operations.

Asset Balances

Materials and supplies inventory

Nuclear fuel inventory, net

Completed plant, net

Construction work in progress

Liability Balances

Asset retirement obligation

NRC License Renewal Term

December 31, 2018

  $

45

118

538

44

(395)

2036 (unit 1)

2040 (unit 2)

Generation’s  Dresden,  Byron,  and  Braidwood  nuclear  plants  in  Illinois  are  also  showing  increased  signs  of  economic  distress,  which  could  lead  to  an  early
retirement,  in  a  market  that  does  not  currently  compensate  them  for  their  unique  contribution  to  grid  resiliency  and  their  ability  to  produce  large  amounts  of
energy without carbon and air pollution. The May 2018 PJM capacity auction for the 2021-2022 planning year resulted in the largest volume of nuclear capacity
ever  not  selected  in  the  auction,  including  all  of  Dresden,  and  portions  of  Byron  and  Braidwood.  Exelon  continues  to  work  with  stakeholders  on  state  policy
solutions, while also advocating for broader market reforms at the regional and federal level.

Other Generation

On March 29, 2018, Generation notified grid operator ISO-NE of its plans to early retire its Mystic Generating Station assets absent regulatory reforms on June
1, 2022, at the end of the current capacity commitment for Mystic Units 7 and 8. Mystic Unit 9 is currently committed through May 2021.

The ISO-NE announced that it would take a three-step approach to fuel security.

•

First, on May 1, 2018, ISO-NE made a filing with FERC requesting waiver of certain tariff provisions to allow it to retain Mystic Units 8 and 9 for fuel
security for the 2022 - 2024 capacity commitment periods. FERC denied the waiver request on procedural grounds on July 2, 2018 and ordered ISO-
NE to (i) make a filing within 60 days providing for the filing of a short-term cost-of-service agreement to address fuel security concerns and (ii) make a
filing by July 1, 2019 proposing permanent tariff revisions that would improve its market design to better address regional fuel security concerns.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

•

•

Second, in accordance with FERC's July 2, 2018 order, on August 31, 2018, ISO-NE made a filing with FERC proposing short-term tariff changes to
permit it to retain a resource for fuel security reliability reasons, which FERC accepted on December 3, 2018. 

Third,  ISO-NE  stated  its  intention  to  work  with  stakeholders  to  develop  long-term  market  rule  changes  to  address  system  resiliency  considering
significant reliability risks identified in ISO-NE’s January 2018 fuel security report. Changes to market rules are necessary because critical units to the
region, such as Mystic Units 8 and 9, cannot recover future operating costs, including the cost of procuring fuel. In its July 2, 2018 order, FERC ordered
ISO-NE  to  make  a  filing  by  July  1,  2019  proposing  permanent  tariff  revisions  that  would  improve  its  market  design  to  better  address  regional  fuel
security concerns. In January 2019, ISO-NE has indicated that it intends to seek an extension of the deadline for this filing to November 15, 2019.

On May 16, 2018, Generation made a filing with FERC to establish cost-of-service compensation and terms and conditions of service for Mystic Units 8 and 9 for
the period between June 1, 2022 - May 31, 2024. Among the costs included in the filing are costs associated with the Everett Marine Terminal. On December
20,  2018,  FERC  issued  an  order  accepting  the  cost  of  service  agreement  reflecting  a  number  of  adjustments  to  the  annual  fixed  revenue  requirement  and
allowing for recovery of a substantial portion of the costs associated with the Everett Marine Terminal. FERC also directed a paper hearing on ROE using a new
methodology. Initial and reply briefs on ROE will be due on April 18, 2019 and July 18, 2019. These will be reflected in a compliance filing due February 18,
2019. On January 4, 2019, Generation notified ISO-NE that it will participate in the Forward Capacity Market auction for the 2022 - 2023 capacity commitment
period. In addition, on January 22, 2019, Exelon and several other parties filed requests for rehearing of certain findings of the December 20, 2018 order. The
request for rehearing does not alter Generation's commitment to participate in the Forward Capacity Auction for the 2022-2023 capacity commitment period.

The following table provides the balance sheet amounts as of  December 31, 2018  for Generation’s significant assets and liabilities associated with the Mystic
Units 8 and 9 and Everett Marine Terminal assets that would potentially be impacted by a decision to permanently cease generation operations.

Asset Balances

Materials and supplies inventory

Fuel inventory

Completed plant, net

Construction work in progress

Liability Balances

Asset retirement obligation

December 31, 2018

  $

30

20

901

9

(1)

To ensure the continued reliable supply of fuel to Mystic Units 8 and 9 while they remain operating, on October 1, 2018, Generation acquired the Everett Marine
Terminal in Massachusetts for a purchase price of $81 million , with the majority of the fair value allocated to Property, plant and equipment and no goodwill
recorded.  Generation also settled its existing long-term gas supply agreement, resulting in a pre-tax gain of $75 million , which is included within Purchased
power and fuel expense in Exelon’s and Generation’s Consolidated Statements of Operations and Comprehensive Income.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

9. Jointly Owned Electric Utility Plant (Exelon, Generation, PECO, BGE, PHI, Pepco, DPL and ACE)

Exelon's, Generation's, PECO's, BGE's, Pepco's, DPL's and ACE's undivided ownership interests in jointly owned electric plants and transmission facilities at
December 31, 2018 and 2017 were as follows:

Operator

Ownership interest

Exelon’s share at December 31, 2018:

Plant (e)

Accumulated depreciation (e)

Construction work in progress

Exelon’s share at December 31, 2017:

Plant (e)

Accumulated depreciation (e)

$

$

Nuclear Generation

  Fossil-Fuel Generation  

Transmission

Other

Quad Cities

Peach
Bottom

Generation

Generation

Salem (a)

PSEG 
Nuclear

  Nine Mile Point Unit 2  

Generation

Wyman

FP&L

PA (b)

First 
Energy

NJ/ DE (c)

Other (d)

PSEG/ DPL

various

75.00%  

50.00%  

42.59%  

82.00%  

5.89%  

various

various

various

1,131

  $

1,451

  $

587

13

523

15

  $

1,074

550

  $

1,417

461

  $

  $

648

227

44

631

205

  $

  $

910

126

56

839

97

  $

  $

4

3

—

3

3

28   $
16  
1  

103   $
53  
—  

27   $
15  
—  

102   $
52  
—  

15

13

—

15

13

Construction work in progress
__________
(a) Generation  also  owns  a  proportionate  share  in  the  fossil-fuel  combustion  turbine  at  Salem,  which  is  fully  depreciated.  The  gross  book  value  was  $3  million  at

33

55

35

18

—

—

December 31, 2018 and 2017 .

(b) PECO, BGE, Pepco, DPL and ACE own a 22% , 7% , 27% , 9% and 8% share, respectively, in 127 miles of 500 kV lines located in Pennsylvania as well as a 20.72% ,
10.56% , 9.72% , 3.72% and 3.83% share, respectively, of a 500 kV substation immediately outside of the Conemaugh fossil-generating station which supplies power to
the 500 kV lines including, but not limited to, the lines noted above.

(c) PECO,  DPL  and  ACE  own  a  42.55% , 1% and 13.9% share,  respectively  in  151.3 miles  of  500 kV  lines  located  in  New  Jersey  and  of  the  Salem  generating  plant
substation. PECO, DPL and ACE also own a 42.55% , 7.45% and 7.45% share, respectively, in 2.5 miles of 500 kV line located over the Delaware River. ACE also has a
21.78% share in a 500 kV New Freedom Switching substation.

(d) Generation, DPL and ACE own a 44.24% , 11.91% and 4.83% share, respectively in assets located at Merrill Creek Reservoir located in New Jersey. Pepco, DPL and

ACE own a 11.9% , 7.4% and 6.6% share, respectively, in Valley Forge Corporate Center.

(e) Excludes asset retirement costs and general plant.

Exelon’s, Generation’s, PECO's, BGE's, Pepco's, DPL's and ACE's undivided ownership interests are financed with their funds and all operations are accounted
for as if such participating interests were wholly owned facilities. Exelon’s, Generation’s, PECO's, BGE's, Pepco's, DPL's and ACE's share of direct expenses of
the  jointly  owned  plants  are  included  in  Purchased  power  and  fuel  and  Operating  and  maintenance  expenses  in  Exelon’s  and  Generation’s  Consolidated
Statements of Operations and Comprehensive Income and in Operating and maintenance expenses in PECO's, BGE's, Pepco's, DPL's and ACE's Consolidated
Statements of Operations and Comprehensive Income.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

10. Intangible Assets (Exelon, Generation, ComEd, PECO, PHI, Pepco, DPL and ACE)

Goodwill

Exelon’s, ComEd’s and PHI's gross amount of goodwill, accumulated impairment losses and carrying amount of goodwill for the years ended December 31,
2018 and 2017 were as follows:

Exelon

Gross amount

Accumulated impairment loss

Carrying amount

ComEd (a)

Gross amount

Accumulated impairment loss

Carrying amount

PHI (b)

Gross amount

Carrying amount

Balance at
January 1, 2017

Impairment losses

Balance at December
31, 2017

Impairment losses

Balance at December
31, 2018

$

8,660   $

1,983  

6,677  

4,608  

1,983  

2,625  

4,005  

4,005  

—   $

—  

—  

—  

—  

—  

—  

—  

8,660   $

1,983  

6,677  

4,608  

1,983  

2,625  

4,005  

4,005  

—   $

—  

—  

—  

—  

—  

—  

—  

8,660

1,983

6,677

4,608

1,983

2,625

4,005

4,005

__________
(a) Reflects goodwill recorded in 2000 from the PECO/Unicom merger (predecessor parent company of ComEd).
(b) Reflects goodwill recorded in 2016 from the PHI merger.

Goodwill  is not  amortized,  but  is  subject  to  an  assessment  for  impairment  at  least  annually,  or  more  frequently  if  events  occur  or  circumstances  change  that
would more likely than not reduce the fair value of ComEd's and PHI's reporting units below their carrying amounts. A reporting unit is an operating segment or
one level below an operating segment (known as a component) and is the level at which goodwill is tested for impairment. A component of an operating segment
is a reporting unit if the component constitutes a business for which discrete financial information is available and its operating results are regularly reviewed by
segment management. ComEd has a single operating segment. PHI's operating segments are Pepco, DPL and ACE. See Note  24 — Segment Information for
additional information. There is no level below these operating segments for which operating results are regularly reviewed by segment management. Therefore,
the ComEd, Pepco, DPL and ACE operating segments are also considered reporting units for goodwill impairment testing purposes. Exelon's and ComEd's $2.6
billion of goodwill has been assigned entirely to the ComEd reporting unit. PHI identified an error related to the allocation of goodwill to its reporting units in 2016
while performing the 2018 annual impairment assessment. As revised in 2018, Exelon's and PHI's $4 billion of goodwill has been assigned to the Pepco, DPL
and ACE reporting units in the amounts of $2.1 billion , $1.4 billion and $0.5 billion , respectively, an increase (decrease) of $0.4 billion , $0.3 billion , and $(0.7)
billion for Pepco, DPL and ACE, respectively, from the originally reported amounts. This error did not result in a change to the total amount of goodwill recorded
at PHI nor would it have resulted in an impairment of PHI's goodwill in 2016 or 2017. Therefore, management has concluded that the error is not material to the
previously issued financial statements.

Entities  assessing  goodwill  for  impairment  have  the  option  of  first  performing  a  qualitative  assessment  to  determine  whether  a  quantitative  assessment  is
necessary. In performing a qualitative assessment, entities should assess, among other things, macroeconomic conditions, industry and market considerations,
overall financial performance, cost factors and entity-specific events. If an entity determines, on the basis of qualitative factors, that the fair value of the reporting
unit is more likely than not greater than the carrying amount, no further testing is required.

If an entity bypasses the qualitative assessment or performs the qualitative assessment but determines that it is more likely than not that its fair value is less than
its carrying amount, a quantitative two-step, fair value-based test is performed. Exelon's, ComEd's and PHI's accounting policy is to perform a quantitative test of
goodwill  at  least  once  every  three  years.  The  first  step  in  the  quantitative  test  compares  the  fair  value  of  the  reporting  unit  to  its  carrying  amount,  including
goodwill. If the carrying amount of the reporting unit exceeds its fair value, the second step is performed. The second step requires an allocation of fair value to
the individual assets and liabilities using purchase price allocation authoritative guidance in order to determine the implied fair value of goodwill. If the implied

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

fair value of goodwill is less than the carrying amount, an impairment loss is recorded as a reduction to goodwill and a charge to operating expense.

Application  of the  goodwill impairment  test requires  management  judgment,  including the identification  of reporting  units and determining  the fair value of the
reporting  unit,  which  management  estimates  using  a  weighted  combination  of  a  discounted  cash  flow  analysis  and  a  market  multiples  analysis.  Significant
assumptions used in these fair value analyses include discount and growth rates, utility sector market performance and transactions, projected operating and
capital cash flows for ComEd's, Pepco's, DPL's and ACE's businesses and the fair value of debt. In applying the second step (if needed), management must
estimate the fair value of specific assets and liabilities of the reporting unit.

2018  and  2017  Goodwill  Impairment  Assessment.  ComEd  and  PHI  qualitatively  determined  that  it  was  more  likely  than  not  that  the  fair  values  of  their
reporting units exceeded their carrying values and, therefore, did not perform quantitative assessments as of November 1, 2018 and 2017 for ComEd and as of
November 1, 2017 for PHI. As part of their qualitative assessments, ComEd and PHI evaluated, among other things, management’s best estimate of projected
operating and capital cash flows for their businesses, outcomes of recent regulatory proceedings, changes in certain market conditions, including the discount
rate and regulated utility peer company EBITDA multiples, while also considering, the passing margin from their last quantitative assessments as of November 1,
2016.

As a result of the reallocation of goodwill to PHI’s reporting units as discussed above, as of November 1, 2018, PHI performed a quantitative test for its 2018
annual  goodwill  impairment  assessment.  The  first  step  of  the  test  comparing  the  estimated  fair  values  of  the  Pepco,  DPL  and  ACE  reporting  units  to  their
carrying values, including goodwill, indicated no impairments of goodwill; therefore, no second step was required.

While  the  annual  assessments  indicated  no  impairments,  certain  assumptions  used  to  estimate  reporting  unit  fair  values  are  highly  sensitive  to  changes.
Adverse regulatory actions or changes in significant assumptions could potentially result in future impairments of Exelon's, ComEd's and PHI’s goodwill, which
could be material. Based on the results of the annual goodwill test performed as of November 1, 2016 and November 1, 2018 for ComEd and PHI, respectively,
the  estimated  fair  values  of  the  ComEd,  Pepco,  DPL  and  ACE  reporting  units  would  have  needed  to  decrease  by  more  than  30% , 30% , 20% and 30% ,
respectively, for ComEd and PHI to fail the first step of their respective impairment tests.

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Other Intangible Assets and Liabilities

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon’s,  Generation’s,  ComEd’s  and  PHI's  other  intangible  assets  and  liabilities,  included  in  Unamortized  energy  contract  assets  and  liabilities  and  Other
deferred debits and other assets in their Consolidated Balance Sheets, consisted of the following as of December 31, 2018 and 2017 :

December 31, 2018

Accumulated
Amortization

Gross

Net

Gross

December 31, 2017

Accumulated
Amortization

Net

Generation

Unamortized Energy Contracts (b)

Customer Relationships

Trade Name

ComEd

1,957  

325  

243  

(1,588)  

(162)  

(171)  

369  

163  

72  

1,938  

305  

243  

(1,574)  

(133)  

(148)  

Chicago Settlement Agreements (c)

162  

(148)  

14  

162  

(141)  

PHI

364

172

95

21

Unamortized Energy Contracts (b)

(1,515)  

954  

(561)  

(1,515)  

766  

(749)

Exelon Corporate

Software License (a)

Exelon

95  

(34)  

61  

95  

(25)  

  $

1,267   $

(1,149)   $

118   $

1,228   $

(1,255)   $

70

(27)

__________
(a) On  May  31,  2015,  Exelon  entered  into  a  long-term  software  license  agreement.    Exelon  is  required  to  make  payments  starting  August  2015  through  May  2024.  The

(b)
(c)

intangible asset recognized as a result of these payments is being amortized on a straight-line basis over the contract term.
Includes unamortized energy contract assets and liabilities in Exelon's, Generations and PHI's Consolidated Balance Sheets.
In March 1999 and February 2003, ComEd entered into separate agreements with the City of Chicago and Midwest Generation, LLC. Under the terms of the settlement,
ComEd agreed to  make payments  to the  City of Chicago.  The  intangible  asset  recognized  as a result of the settlement  agreement  is being amortized  ratably  over the
remaining term of the City of Chicago franchise agreement.

The following table summarizes the estimated future amortization expense related to intangible assets and liabilities as of December 31, 2018 :

For the Years Ending December 31,

Exelon

Generation

ComEd

PHI

2019

2020

2021

2022

2023

  $

(32)   $

70   $

7   $

(20)  

(4)  

(23)  

(21)  

78  

78  

56  

50  

7  

—  

—  

—  

(119)

(115)

(92)

(89)

(81)

The following table summarizes the amortization expense related to intangible assets and liabilities for each of the years ended December 31, 2018 , 2017 and
2016 :

For the Years Ended December 31,

Exelon (a)(b)

Generation (a)

ComEd

PHI (b)

2018   $
2017  

2016  

(109)   $

(237)  

(336)  

63   $

83  

79  

7   $

7  

7  

(188)

(336)

(430)

__________
(a) At Exelon and Generation, amortization of unamortized energy contracts totaling $14 million , $35 million and $35 million for the years ended December 31, 2018 , 2017
and 2016 , respectively, was recorded in Operating revenues or Purchased power and fuel expense in their Consolidated Statements of Operations and Comprehensive
Income.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(b) At Exelon and PHI, amortization of the unamortized energy contract fair value adjustment amounts and the corresponding offsetting regulatory asset and liability amounts

are amortized through Purchased power and fuel expense in their Consolidated Statements of Operations and Comprehensive Income.

Acquired Intangible Assets and Liabilities

Business combinations require the acquirer to separately recognize identifiable intangible assets in the application of purchase accounting.

Unamortized Energy Contracts. Unamortized  energy  contract  assets  and  liabilities  represent  the  remaining  unamortized  fair  value  of  non-derivative  energy
contracts that Exelon and Generation have acquired. The valuation of unamortized energy contracts was estimated by applying either the market approach or
the  income  approach  depending  on  the  nature  of  the  underlying  contract.  The  market  approach  was  utilized  when  prices  and  other  relevant  information
generated by market transactions involving comparable transactions were available. Otherwise, the income approach, which is based upon discounted projected
future cash flows associated with the underlying contracts, was utilized. The fair value is based upon certain unobservable inputs, which are considered Level 3
inputs, pursuant to applicable authoritative guidance. Key estimates and inputs include forecasted power and fuel prices and the discount rate. The Exelon Wind
unamortized energy contracts are amortized on a straight-line basis over the period in which the associated contract revenues are recognized as a decrease in
Operating  revenues  within  Exelon’s  and  Generation’s  Consolidated  Statements  of  Operations  and  Comprehensive  Income.  In  the  case  of  Antelope  Valley,
Constellation, CENG, Integrys and ConEdison, the fair value amounts are amortized over the life of the contract in relation to the present value of the underlying
cash flows as of the acquisition dates through either Operating revenues or Purchased power and fuel expense within Exelon’s and Generation’s Consolidated
Statements of Operations and Comprehensive Income. At PHI, offsetting regulatory assets or liabilities were also recorded. The unamortized  energy contract
assets  and  liabilities and  any  corresponding  regulatory  assets  or liabilities, respectively,  are  amortized  over  the  life of  the  contract  in relation  to the  expected
realization of the underlying cash flows.

Customer Relationships. The customer relationship intangibles were determined based on a “multi-period excess method” of the income approach. Under this
method, the intangible asset’s fair value is determined to be the estimated future cash flows that will be earned on the current customer base, taking into account
expected contract renewals based on customer attrition rates and costs to retain those customers. The fair value is based upon certain unobservable inputs,
which  are  considered  Level  3  inputs,  pursuant  to  applicable  authoritative  guidance.    Key  assumptions  include  the  customer  attrition  rate  and  the  discount
rate. The authoritative guidance requires that customer-based intangibles be amortized over the period expected to be benefited using the pattern of economic
benefit.    The  amortization  of  the  customer  relationships  recorded  in  Depreciation  and  amortization  expense  within  Exelon's  and  Generation's  Consolidated
Statements of Operations and Comprehensive Income.

Trade  Name.  The  Constellation  trade  name  intangible  was  determined  based  on  the  relief  from  royalty  method  of  income  approach  whereby  fair  value  is
determined  to  be  the  present  value  of  the  license  fees  avoided  by  owning  the  assets.  The  fair  value  is  based  upon  certain  unobservable  inputs,  which  are
considered  Level  3  inputs,  pursuant  to  applicable  authoritative  guidance.  Key  assumptions  include  the  hypothetical  royalty  rate  and  the  discount  rate.  The
Constellation  trade  name  intangible  is  amortized  on  a  straight-line  basis  over  a  period  of  10  years  .  The  amortization  of  the  trade  name  is  recorded  in
Depreciation and amortization expense within Exelon's and Generation's Consolidated Statements of Operations and Comprehensive Income.

Renewable Energy Credits and Alternative Energy Credits (Exelon, Generation, PECO, PHI, DPL and ACE)

Exelon’s, Generation’s, PECO's, PHI's, DPL's and ACE's other intangible assets, included in Other current assets and Other deferred debits and other assets in
the  Consolidated Balance  Sheets, include RECs (Exelon,  Generation,  PHI, DPL and ACE) and AECs (Exelon  and PECO). Purchased RECs are recorded  at
cost on the date they are purchased. The cost of RECs purchased on a stand-alone basis is based on the transaction price, while the cost of RECs acquired
through PPAs represents the difference between the total contract price and the market price of energy at contract inception. Generally, revenue for RECs that
are sold to a counterparty under a contract that specifically identifies a power plant is recognized at a point in time when the power is produced. This includes
both bundled and unbundled REC sales. Otherwise, the revenue is recognized upon physical transfer of the REC to the customer.

325

Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table summarizes the current and noncurrent Renewable and Alternative Energy Credits as of December 31, 2018 and 2017 :

Current AEC's

Current REC's

Noncurrent REC's

Current AEC's

Current REC's

Noncurrent REC's

$

$

As of December 31, 2018

Exelon

Generation

PECO

PHI

DPL

ACE

2   $

279  

52  

—   $

270  

52  

2   $

—  

—  

—   $

—   $

9  

—  

8  

—  

As of December 31, 2017

Exelon

Generation

PECO

PHI

DPL

ACE

1   $

321  

27  

—   $

312  

27  

1   $

—  

—  

—   $

—   $

9  

—  

8  

—  

—

1

—

—

1

—

11. Fair Value of Financial Assets and Liabilities (All Registrants)

Fair Value of Financial Liabilities Recorded at the Carrying Amount

The  following  tables  present  the  carrying  amounts  and  fair  values  of  the  Registrants’  short-term  liabilities, long-term  debt,  SNF obligation,  and  trust  preferred
securities (long-term debt to financing trusts or junior subordinated debentures) as of December 31, 2018 and 2017 :

Exelon

Short-term liabilities

$

714   $

— $

714

$

—   $

Long-term debt (including amounts due within one year) (a)

Long-term debt to financing trusts (b)

SNF obligation

35,424  

390  

1,171  

—

—

—

33,711

—

949

2,158  

400  

—  

714

35,869

400

949

Carrying 
Amount

Level 1

Level 2

Level 3

Total

December 31, 2018

Fair Value

Carrying
Amount

Level 1

Level 2

Level 3

Total

December 31, 2017

Fair Value

Short-term liabilities

$

929   $

—   $

929   $

—   $

Long-term debt (including amounts due within one year) (a)

Long-term debt to financing trusts (b)

SNF obligation

34,264  

389  

1,147  

326

—  

—  

—  

34,735  

—  

936  

1,970  

431  

—  

929

36,705

431

936

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Generation

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Long-term debt (including amounts due within one year) (a)

$

8,793   $

— $

7,467

$

1,443   $

SNF obligation

1,171  

—

949

—  

8,910

949

Carrying
Amount

Level 1

Level 2

Level 3

Total

December 31, 2018

Fair Value

Short-term liabilities

Long-term debt (including amounts due within one year) (a)

SNF obligation

ComEd  

December 31, 2017

Fair Value

Carrying
Amount

$

2   $

8,990  

1,147  

Level 1

Level 2

Level 3

Total

—   $

—  

—  

2   $

—   $

7,839  

936  

1,673  

—  

2

9,512

936

Long-term debt (including amounts due within one year) (a)

$

8,101   $

— $

8,390

$

Long-term debt to financing trusts (b)

205  

—

—

—   $

209  

8,390

209

Carrying
Amount

Level 1

Level 2

Level 3

Total

December 31, 2018

Fair Value

Long-term debt (including amounts due within one year) (a)

Long-term debt to financing trusts (b)

PECO

December 31, 2017

Fair Value

Carrying
Amount

$

7,601   $

205  

Level 1

Level 2

Level 3

Total

—   $

—  

8,418   $

—  

—   $

227  

8,418

227

Long-term debt (including amounts due within one year) (a)

$

3,084   $

— $

3,157

$

Long-term debt to financing trusts

184  

—

—

50   $

191  

3,207

191

Carrying
Amount

Level 1

Level 2

Level 3

Total

December 31, 2018

Fair Value

Long-term debt (including amounts due within one year) (a)

Long-term debt to financing trusts

December 31, 2017

Fair Value

Level 1

Level 2

Level 3

Total

—   $

—  

3,194   $

—  

—   $

204  

3,194

204

Carrying
Amount

$

2,903   $

184  

327

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

BGE

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Short-term liabilities

Long-term debt (including amounts due within one year) (a)

Short-term liabilities

Long-term debt (including amounts due within one year) (a)

PHI

December 31, 2018

Fair Value

$

$

Carrying
Amount

35   $

2,876  

Carrying
Amount

Level 1

Level 2

Level 3

Total

— $

—

35

$

2,950

—   $

—  

35

2,950

December 31, 2017

Fair Value

Level 1

Level 2

Level 3

Total

77   $

2,577  

—   $

—  

77   $

2,825  

—   $

—  

77

2,825

Short-term liabilities

Long-term debt (including amounts due within one year) (a)

Carrying Amount

Level 1

Level 2

Level 3

Total

$

179   $

6,259  

—   $

—  

179   $

5,436  

—   $

665  

179

6,101

December 31, 2018

Fair Value

Short-term liabilities
Long-term debt (including amounts due within one year) (a)

Carrying Amount

Level 1

Level 2

Level 3

Total

$

350   $

5,874  

—   $

—  

350   $

5,722  

—   $

297  

350

6,019

December 31, 2017

Fair Value

Pepco

Short-term liabilities
Long-term debt (including amounts due within one year) (a)

Carrying Amount

Level 1

Level 2

Level 3

Total

$

40   $

2,719  

—   $

—  

40   $

2,901  

—   $

196  

40

3,097

December 31, 2018

Fair Value

Short-term liabilities
Long-term debt (including amounts due within one year) (a)

Carrying Amount

Level 1

Level 2

Level 3

Total

$

26   $

2,540  

—   $

—  

26   $

3,114  

—   $

9  

26

3,123

December 31, 2017

Fair Value

328

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

DPL

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Long-term debt (including amounts due within one year) (a)

$

1,494   $

—   $

1,303   $

193   $

1,496

Carrying Amount

Level 1

Level 2

Level 3

Total

December 31, 2018

Fair Value

Short-term liabilities
Long-term debt (including amounts due within one year) (a)

Carrying Amount

Level 1

Level 2

Level 3

Total

$

216   $

1,300  

—   $

—  

216   $

1,393  

—   $

—  

216

1,393

December 31, 2017

Fair Value

ACE

Short-term liabilities
Long-term debt (including amounts due within one year) (a)

Carrying Amount

Level 1

Level 2

Level 3

Total

$

139   $

1,188  

—   $

—  

139   $

987  

—   $

275  

139

1,262

December 31, 2018

Fair Value

December 31, 2017

Fair Value

Carrying Amount

Level 1

Level 2

Level 3

Total

Short-term liabilities
Long-term debt (including amounts due within one year) (a)
__________
(a) Includes unamortized debt issuance costs which are not fair valued of $216 million , $51 million , $63 million , $23 million , $18 million , $14 million , $34 million , $12 million
and $7 million for Exelon, Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE respectively, as of December 31, 2018 . Includes unamortized debt issuance costs
which are not fair valued of $201 million , $60 million , $52 million , $17 million , $17 million , $6 million , $32 million , $11 million and $5 million for Exelon, Generation, ComEd,
PECO, BGE, PHI, Pepco, DPL and ACE respectively, as of December 31, 2017 .
(b) Includes unamortized debt issuance costs which are not fair valued of $0 million and $1 million for Exelon and ComEd, respectively, as of December 31, 2018 . Includes
unamortized debt issuance costs which are not fair valued of $1 million and $1 million for Exelon and ComEd, respectively, as of December 31, 2017 .

1,121  

949  

288  

1,237

—  

108

$

108   $

108   $

—   $

—   $

Short-Term Liabilities.   The short-term liabilities included in the tables above are comprised of dividends payable (included in Other current liabilities) (Level 1)
and  short-term  borrowings  (Level  2).  The  Registrants’  carrying  amounts  of  the  short-term  liabilities  are  representative  of  fair  value  because  of  the  short-term
nature of these instruments.

Long-Term Debt.   The fair value amounts of Exelon’s taxable debt securities (Level 2) and private placement taxable debt securities (Level 3) are determined
by a valuation model that is based on a conventional discounted cash flow methodology and utilizes assumptions of current market pricing curves. In order to
incorporate  the  credit  risk  of  the  Registrants  into  the  discount  rates,  Exelon  obtains  pricing  (i.e.,  U.S.  Treasury  rate  plus  credit  spread)  based  on  trades  of
existing Exelon debt securities as well as debt securities of other issuers in the utility sector with similar credit ratings in both the primary and secondary market,
across the Registrants’ debt maturity spectrum. The credit spreads of various tenors obtained from this information are added to the appropriate benchmark U.S.
Treasury rates in order to determine the current market yields for the various tenors. The yields are then converted into discount rates of various tenors that are
used for discounting the respective cash flows of the same tenor for each

329

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

bond or note. Due to low trading volume of private placement debt, qualitative factors such as market conditions, low volume of investors and investor demand,
this debt is classified as Level 3.

The fair value of Generation’s and Pepco's non-government-backed fixed rate nonrecourse debt (Level 3) is based on market and quoted prices for its own and
other nonrecourse debt with similar risk profiles. Given the low trading volume in the nonrecourse debt market, the price quotes used to determine fair value will
reflect certain qualitative factors, such as market conditions, investor demand, new developments that might significantly impact the project cash flows or off-
taker credit, and other circumstances related to the project (e.g., political and regulatory environment). The fair value of Generation’s government-backed fixed
rate project financing debt (Level 3) is largely based on a discounted cash flow methodology that is similar to the taxable debt securities methodology described
above. Due to the lack of market trading data on similar debt, the discount  rates are derived based on the original loan interest rate spread to the applicable
Treasury rate as well as a current market curve derived from government-backed securities. Variable rate financing debt resets on a monthly or quarterly basis
and the carrying value approximates fair value (Level 2). When trading data is available on variable rate financing debt, the fair value is based on market and
quoted prices for its own and other nonrecourse debt with similar risk profiles (Level 2).  Generation, Pepco, DPL and ACE also have tax-exempt debt (Level 2).
Due to low trading volume in this market, qualitative factors, such as market conditions, investor demand, and circumstances related to the issuer (e.g., conduit
issuer political and regulatory environment), may be incorporated into the credit spreads that are used to obtain the fair value as described above. Variable rate
tax-exempt debt (Level 2) resets on a regular basis and the carrying value approximates fair value.

SNF Obligation . The carrying amount of Generation’s SNF obligation (Level 2) is derived from a contract with the DOE to provide for disposal of SNF from
Generation’s  nuclear  generating  stations.  When determining  the  fair value of the obligation, the  future carrying amount  of the  SNF obligation is calculated by
compounding  the  current  book  value  of  the  SNF  obligation  at  the  13-week  Treasury  rate.  The  compounded  obligation  amount  is  discounted  back  to  present
value using Generation’s discount rate, which is calculated using the same methodology as described above for the taxable debt securities, and an estimated
maturity  date  of  2030.  The  carrying  amount  also  includes  $119  million  and $114  million  as  of  December  31,  2018  and 2017 for  the  one-time  fee  obligation
associated  with closing  of  the  FitzPatrick acquisition  on  March  31,  2017.  The  fair value  was determined  using  a similar methodology,  however  the  New York
Power Authority's (NYPA) discount rate is used in place of Generation's given the contractual right to reimbursement from NYPA for the obligation; see Note 5 -
Mergers, Acquisitions and Dispositions for additional information on Generation's acquisition of FitzPatrick.

Long-Term Debt to Financing Trusts . Exelon’s long-term debt to financing trusts is valued based on publicly traded securities issued by the financing trusts.
Due to low trading volume of these securities, qualitative factors, such as market conditions, investor demand, and circumstances related to each issue, this debt
is classified as Level 3.

Recurring Fair Value Measurements

Exelon records the fair value of assets and liabilities in accordance with the hierarchy established by the authoritative guidance for fair value measurements. The
hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three levels as follows:

•

•

•

Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities that the Registrants have the ability to liquidate as of the
reporting date.

Level  2  —  inputs  other  than  quoted  prices  included  within  Level  1  that  are  directly  observable  for  the  asset  or  liability  or  indirectly  observable
through corroboration with observable market data.

Level  3  —  unobservable  inputs,  such  as  internally  developed  pricing  models  or  third-party  valuations  for  the  asset  or  liability  due  to  little  or  no
market activity for the asset or liability.

330

Table of Contents

Generation and Exelon

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

In  accordance  with  the  applicable  guidance  on  fair  value  measurement,  certain  investments  that  are  measured  at  fair  value  using  the  NAV  per  share  as  a
practical expedient are no longer classified within the fair value hierarchy and are included under "Not subject to leveling" in the table below.

The following tables present assets and liabilities measured and recorded at fair value in Exelon's and Generation’s Consolidated Balance Sheets on a recurring
basis and their level within the fair value hierarchy as of December 31, 2018 and 2017 :

As of December 31, 2018

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Generation

Exelon

Assets

Cash equivalents (a)

NDT fund investments

$

581   $

—   $

—   $

—   $

581   $

1,243

  $

—   $

—   $

—   $

1,243

Cash equivalents (b)

252  

86  

Equities

Fixed income

Corporate debt

U.S. Treasury and
agencies

Foreign governments

State and municipal
debt

Other (c)

2,918

1,591

—  

1,593

2,081

—  

—  
—  

99  
50  

149  
30  

Fixed income subtotal

2,081

1,921

Middle market lending

Private equity

Real estate

—  
—  
—  

—  
—  
—  

NDT fund investments subtotal
(d)

5,251

3,598

—  
—  

230  

—  
—  

—  
—  

230
313  
—  
—  

543  

—  

338  

252  

86  

1,381

5,890

2,918

1,591

—  

—  
—  

—  
846  
846  
367  
329  
510  

1,823

2,180

50  

149  
876  

—  

1,593

2,081

—  

—  
—  

99  
50  

149  
30  

5,078

2,081

1,921

680  
329  
510  

—  
—  
—  

—  
—  
—  

3,433

12,825

5,251

3,598

331

—  
—  

230  

—  
—  

—  
—  
230  
313  
—  
—  

543

—  

1,381

—  

—  
—  

—  

846
846  
367  
329  
510  

338

5,890

1,823

2,180

50

149

876

5,078

680

329

510

3,433

12,825

 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
 
   
   
   
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

As of December 31, 2018
Pledged assets for Zion Station
decommissioning

Cash equivalents

Equities

Middle market lending

Pledged assets for Zion Station
decommissioning subtotal

Rabbi trust investments

Cash equivalents

Mutual funds

Fixed income

Life insurance contracts

Rabbi trust investments subtotal
(f)

Commodity derivative assets

Economic hedges

Proprietary trading

Effect of netting and allocation
of 
collateral (e)

Commodity derivative assets
subtotal

Interest rate and foreign
currency derivative assets

Derivatives designated as
hedging instruments

Economic hedges

Effect of netting and allocation
of collateral

Interest rate and foreign
currency derivative assets
subtotal

Other investments

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Generation

Exelon

9  
—  
—  

9  

5  
24  
—  
—  

29  

—  
—  
—  

—  

—  
—  
—  
22  

22  

—  
—  
—  

—

—  
—  
—  
—  

—  

541  
—  

2,760

1,470

69  

77  

(582)

(2,357)

(41)

472  

(732)

815

—  
—  

—  

—  
—  

—  
13  

(3)

10  
—  

—  
—  

—  

—
42  

—  
—  
—  

—

—  
—  
—  
—  

—

—  
—  

—  

—

—  
—  

—  

—
—  

9  
—  
—  

9

5  
24  
—  
22  

51

4,771

146  

(3,671)

1,246

—  
13  

(3)

10
42  

9  
—  
—  

9  

48  
72  
—  
—  

120  

541  
—  

—  
—  
—  

—  

—  
—  
15  
70  

85  

—  
—  
—  

—

—  
—  
—  
38  

38  

2,760

1,470

69  

77  

(582)

(41)

(2,357)

472  

(732)

815

—  
—  

—  

—  
—  

—  
13  

(3)

10  
—  

—  
—  

—  

—
42  

—  
—  
—  

—

—  
—  
—  
—  

—

—  
—  

—  

—

—  
—  

—  

—
—  

9

—

—

9

48

72

15

108

243

4,771

146

(3,671)

1,246

—

13

(3)

10

42

Total assets

5,829

4,102

1,400

3,433

14,764

6,582

4,165

1,438

3,433

15,618

332

 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
   
 
 
 
 
   
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

As of December 31, 2018

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Level 1

Level 2

Level 3

Not subject
to leveling  

Total

Generation

Exelon

Liabilities

Commodity derivative liabilities

Economic hedges

(642)

(2,963)

(1,027)

—  

639

(3)

—  
—  

—  

—  
—  

(3)

(73)

2,581

(455)

—  

(6)

3

(3)

(35)

(493)

(21)

808

(240)

—  
—  

—  

—
—  

(240)

—  
—  

—  

—

—  
—  

—  

—
—  

—

(4,632)

(642)

(2,963)

(1,276)

(94)

4,028

(698)

—  

(6)

3  

(3)

(35)

(736)

—  

639  

(73)

2,581

(21)

808  

(3)

(455)

(489)

—  
—  

—  

—  
—  

(3)

(4)

(6)

3  

(7)

(137)

(599)

—  
—  

—  

—
—  

(489)

—  
—  

—  

—

—  
—  

—  

—
—  

—

(4,881)

(94)

4,028

(947)

(4)

(6)

3

(7)

(137)

(1,091)

$

5,826

  $

3,609

  $

1,160

$

3,433

$

14,028

$

6,579

  $

3,566

  $

949

$

3,433

$

14,527

As of December 31, 2017

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Generation

Exelon

$

168   $

—   $

—   $

—   $

168   $

656   $

—   $

—   $

—   $

656

135  

4,163

85  
915  

—  

1,614

1,917

—  

—  
—  

52  
82  

263  
47  

—  
—  

251  

—  
—  

—  
—  

—  

220  

135  

2,176

7,254

4,163

85  
915  

1,865

1,969

82  

263  
557  

—  

1,614

1,917

—  

—  
—  

52  
82  

263  
47  

—  

—  
—  

—  
510  

510

333

—  
—  

251  

—  
—  

—  
—  

—  

2,176

—  

—  
—  

—  
510  

510

220

7,254

1,865

1,969

82

263

557

4,736

Fixed income subtotal

1,917

2,058

251

4,736

1,917

2,058

251

Proprietary trading

Effect of netting and allocation of 
collateral (e)

Commodity derivative liabilities
subtotal

Interest rate and foreign currency
derivative liabilities

Derivatives designated as
hedging instruments

Economic hedges

Effect of netting and allocation of
collateral

Interest rate and foreign currency
derivative liabilities subtotal

Deferred compensation obligation

Total liabilities

Total net assets

Assets

Cash equivalents (a)

NDT fund investments

Cash equivalents (b)

Equities

Fixed income

Corporate debt

U.S. Treasury and
agencies

Foreign governments

State and municipal
debt

Other (c)

 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
 
   
   
   
 
   
   
   
   
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

As of December 31, 2017

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Generation

Exelon

—  
—  
—  

—  
—  
—  

397  
—  
—  

131  
222  
471  

528  
222  
471  

—  
—  
—  

—  
—  
—  

6,215

3,058

648

3,510

13,431

6,215

3,058

Middle market lending

Private equity

Real estate

NDT fund investments subtotal
(d)

Pledged assets for Zion Station
decommissioning

Cash equivalents

Equities

Middle market lending

Pledged assets for Zion Station
decommissioning subtotal

Rabbi trust investments

Cash equivalents

Mutual funds

Fixed income

Life insurance contracts

Rabbi trust investments subtotal
(f)

Commodity derivative assets

Economic hedges

Proprietary trading

Effect of netting and allocation
of 
collateral (e)

Commodity derivative assets
subtotal

Interest rate and foreign
currency derivative assets

Derivatives designated as
hedging instruments

Economic hedges

Effect of netting and allocation
of collateral

Interest rate and foreign
currency derivative assets
subtotal

Other investments

Total assets

2  
—  

—

2

5  
23  
—  
—  

28

—  
1  

—

1

—  
—  
—  
22  

22

—  
—  
12  

12

—  
—  
—  
—  

—

557  
2  

2,378

1,290

31  

35  

(585)

(1,769)

(26)

640

(635)

690

—  
—  

(2)

(2)

—

3  
10  

(5)

8

—

—  
—  

—  

—
37  

—  
—  
24  

24

—  
—  
—  
—  

—

—  
—  

—  

—

—  
—  

—  

—
—  

2  
1  
36  

39

5  
23  
—  
22  

50

4,225

68  

(2,989)

1,304

3  
10  

(7)

6
37  

397  
—  
—  

648

—  
—  
12  

12

—  
—  
—  
22  

22

—  
1  

—

1

—  
—  
12  
71  

83

2  
—  

—

2

77  
58  
—  
—  

135

557  
2  

2,378

1,290

31  

35  

(585)

(26)

(1,769)

640

(635)

690

—  
—  

(2)

(2)
—  

6  
10  

(5)

11
—  

—  
—  

—  

—
37  

131  
222  
471  

528

222

471

3,510

13,431

—  
—  
24  

24

—  
—  
—  
—  

—

—  
—  

—  

—

—  
—  

—  

—
—  

2

1

36

39

77

58

12

93

240

4,225

68

(2,989)

1,304

6

10

(7)

9

37

6,385

3,729

1,387

3,534

15,035

6,980

3,793

1,409

3,534

15,716

334

 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
   
 
 
   
 
 
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

As of December 31, 2017

Level 1

Level 2

Level 3

Not subject to
leveling

Total

Level 1

Level 2

Level 3

Not subject
to leveling  

Total

Generation

Exelon

Liabilities

Commodity derivative liabilities

Economic hedges

Proprietary trading

Effect of netting and allocation of 
collateral (e)

Commodity derivative liabilities
subtotal

Interest rate and foreign currency
derivative liabilities

Derivatives designated as
hedging instruments

Economic hedges

Effect of netting and allocation of
collateral

Interest rate and foreign currency
derivative liabilities subtotal

Deferred compensation obligation

Total liabilities

(712)

(2)

650

(64)

—  

(1)

2

1

—

(63)

(2,226)

(42)

2,089

(179)

(2)

(8)

5

(5)

(38)

(222)

(845)

(9)

716

(138)

—  
—  

—  

—
—  

(138)

—  
—  

—  

—

—  
—  

—  

—
—  

—

(3,783)

(53)

3,455

(713)

(2)

651  

(2,226)

(1,101)

(42)

2,089

(9)

716  

(381)

(64)

(179)

(394)

(2)

(9)

7  

(4)

(38)

(423)

—  

(1)

2  

1

—

(63)

(2)

(8)

5  

(5)

(145)

(329)

—  
—  

—  

—
—  

(394)

—  
—  

—  

—

—  
—  

—  

—
—  

—

(4,040)

(53)

3,456

(637)

(2)

(9)

7

(4)

(145)

(786)

$

6,322

$

3,534

$

1,249

$

3,507

$

Total net assets
__________
(a) Generation excludes cash of $283 million and $259 million at December 31, 2018 and 2017 and restricted cash of $39 million and $127 million at December 31, 2018 and
2017 .  Exelon excludes cash of $458 million and $389 million at December 31, 2018 and 2017 and restricted cash of $80 million and $145 million at December 31, 2018
and 2017 and  includes  long-term  restricted  cash  of  $185 million  and $85 million at December  31,  2018  and 2017 ,  which  is  reported  in  Other  deferred  debits  in  the
Consolidated Balance Sheets.
Includes  $50  million  and $77  million  of  cash  received  from  outstanding  repurchase  agreements  at  December  31,  2018  and 2017 ,  respectively,  and  is  offset  by  an
obligation to repay upon settlement of the agreement as discussed in (d) below.
Includes derivative instruments of $44 million and less than $1 million , which have a total notional amount of $1,432 million and $811 million at December 31, 2018 and
2017 , respectively. The notional principal amounts for these instruments provide one measure of the transaction volume outstanding as of the fiscal years ended and do
not represent the amount of the company's exposure to credit or market loss.

(b)

(c)

14,612

$

6,917

$

3,464

$

1,015

$

3,534

$

14,930

(d) Excludes net liabilities of  $130 million  and $82 million at December 31, 2018  and 2017 ,  respectively.  These  items  consist  of  receivables  related  to  pending  securities
sales,  interest  and  dividend  receivables,  repurchase  agreement  obligations,  and  payables  related  to  pending  securities  purchases.  The  repurchase  agreements  are
generally short-term in nature with durations generally of 30 days or less.

(e) Excludes net assets of less than $1 million at December 31, 2018 and 2017 . These items consist of receivables related to pending securities sales, interest and dividend

(f)

receivables, and payables related to pending securities purchases.
The amount of unrealized gains/(losses) at Generation totaled less than $1 million and  $1 million for the years ended December 31, 2018 and 2017 , respectively. The
amount of unrealized gains/(losses) at Exelon totaled $1 million for the years ended December 31, 2018 and 2017 , respectively.

(g) Collateral posted/(received) from counterparties totaled  $57 million , $224 million  and $76 million allocated to Level 1, Level 2 and Level 3 mark-to-market  derivatives,
respectively, as of December 31, 2018 . Collateral posted/(received) from counterparties totaled $65 million , $320 million and $81 million allocated to Level 1, Level 2 and
Level 3 mark-to-market derivatives, respectively, as of December 31, 2017 .

(h) Of the collateral posted/(received), $(94) million and $(117) million represents variation margin on the exchanges as of December 31, 2018 and 2017 , respectively.

335

 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon and Generation hold investments without readily determinable fair values with carrying amounts of $72 million as of December 31, 2018 . Changes were
immaterial in fair value, cumulative adjustments and impairments for the year ended December 31, 2018 .

ComEd, PECO and BGE

The  following  tables  present  assets  and  liabilities  measured  and  recorded  at  fair  value  in  ComEd's,  PECO's  and  BGE's  Consolidated  Balance  Sheets  on  a
recurring basis and their level within the fair value hierarchy as of December 31, 2018 and 2017 :

As of December 31, 2018

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

ComEd

PECO

BGE

Assets

Cash equivalents (a)

$

209

$

— $

—   $

209   $

111

$

— $

—   $

111   $

4

$

— $

—   $

Rabbi trust investments

Mutual funds

Life insurance contracts

Rabbi trust investments
subtotal (b)

Total assets

Liabilities

Deferred compensation
obligation

Mark-to-market derivative
liabilities (c)

Total liabilities

—
—  

—  

209

—

—

—

Total net assets (liabilities) $

209

$

—
—  

—  
—

(6)

—

(6)

(6)

—  
—  

—  
—

—  
—  

—  

7
—  

7  

209

118

—  

(6)  

(249)  
(249)

(249)  
(255)

—

—

—

—
10  

10  
10

(10)

—

(10)

—  
—  

—  
—

—  

—  
—

7  
10  

17  
128

(10)  

—  
(10)

$

(249)

$

(46)

$

118

$

— $

— $

118

$

6
—  

6  
10

—

—

—

10

$

—
—  

—  
—

(5)

—

(5)

(5)

—  
—  

—  
—

—  

—  
—

$

— $

4

6

—

6

10

(5)

—

(5)

5

336

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
   
   
   
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

As of December 31, 2017

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

ComEd

PECO

BGE

Assets

Cash equivalents (a)

$

98

$

— $

—   $

98   $

228

$

— $

—   $

228   $

— $

— $

—   $

Rabbi trust investments

Mutual funds

Life insurance contracts

Rabbi trust investments
subtotal (b)

Total assets

Liabilities
Deferred compensation
obligation
Mark-to-market derivative
liabilities (c)

Total liabilities

—
—  

—  
98

—

—

—

—
—  

—  
—

(8)

—

(8)

—  
—  

—  
—

—  
—  

—  
98

7
—  

7  

235

—  

(8)  

(256)  
(256)

(256)  
(264)

—

—

—

—
10  

10  
10

(11)

—

(11)

—  
—  

—  
—

—  

—  
—

7  
10  

17  
245

(11)  

—  
(11)

6
—  

6  
6

—

—

—

—
—  

—  
—

(5)

—

(5)

—  
—  

—  
—

—  

—  
—

—

6

—

6

6

(5)

—

(5)

$

98

(8)

Total net assets (liabilities) $
__________
(a) ComEd excludes cash of $93 million and $45 million at December 31, 2018 and 2017 and restricted cash of $28 million at December 31, 2018 and includes long-term
restricted cash of $166 million and $62 million at December 31, 2018 and December 31, 2017 , which is reported in Other deferred debits in the Consolidated Balance
Sheets.  PECO excludes cash of $24 million and $47 million at December 31, 2018 and 2017 .  BGE excludes cash of $7 million and $17 million at December 31, 2018
and 2017 and restricted cash of $2 million and $1 million at December 31, 2018 and December 31, 2017 .

— $

— $

(166)

(256)

235

234

(5)

(1)

$

$

$

6

$

$

$

$

$

1

(b) The amount of unrealized gains/(losses) at ComEd, PECO and BGE totaled less than $1 million for the years ended December 31, 2018 and December 31, 2017 .
(c) The Level 3 balance consists of the current and noncurrent liability of $26 million and $223 million , respectively, at December 31, 2018 , and $21 million and $235 million ,

respectively, at December 31, 2017 , related to floating-to-fixed energy swap contracts with unaffiliated suppliers.

337

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
   
   
   
 
 
 
 
 
Table of Contents

PHI, Pepco, DPL and ACE

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables present assets and liabilities measured and recorded at fair value in PHI's, Pepco's, DPL's and ACE's Consolidated Balance Sheets on a
recurring basis and their level within the fair value hierarchy as of December 31, 2018 and 2017 :

PHI

Assets

Cash equivalents (a)

Rabbi trust investments

Cash equivalents

Mutual Funds

Fixed income

Life insurance contracts

Rabbi trust investments subtotal (b)

Total assets

Liabilities

Deferred compensation obligation

Mark-to-market derivative liabilities

Effect of netting and allocation of collateral

Mark-to-market derivative liabilities subtotal

As of December 31, 2018

As of December 31, 2017

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

$

147   $

—   $

—   $

147     $

83   $

—   $

—   $

42  
13  
—  
—  

55

202

—  
—  
—  
—

—  
—  
15  
22  

37

37

(21)  
—  
—  
—

(21)

16

$

—  
—  
—  
38  

38

38

—  
—  
—  
—

42    
13    
15    
60    

130

277

(21)    
—    
—    
—

72  
—  
—  
—  

72

155

—  
(1)  
1  
—

—

38

$

(21)

256

$

—

155

$

—  
—  
12  
23  

35

35

(25)  
—  
—  
—

(25)

10

$

—  
—  
—  
22  

22

22

—  
—  
—  
—

—

22

$

83

72

—

12

45

129

212

(25)

(1)

1

—

(25)

187

Total liabilities

Total net assets

—

202

$

$

As of December 31, 2018

Assets

Pepco

DPL

ACE

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Cash equivalents (a)

$

38   $

—   $

—   $

38   $

16   $

—   $

—   $

16   $

23   $

—   $

—   $

Rabbi trust investments

Cash equivalents

Fixed income
Life insurance
contracts

Rabbi trust investments
subtotal (b)

Total assets

Liabilities
Deferred compensation
obligation

Total liabilities
Total net assets
(liabilities)

41  
—  

—  

41

79

—  
—

—  
5  

22  

27

27

(3)  
(3)

—  
—  

37  

37

37

—  
—

41  
5  

59  

105

143

(3)  
(3)

—  
—  

—  

—

16

—  
—

—  
—  

—  

—

—

(1)  
(1)

—  
—  

—  

—

—

—  
—

—  
—  

—  

—

16

(1)  
(1)

—  
—  

—  

—

23

—  
—

—  
—  

—  

—

—

—  
—

—  
—  

—  

—

—

—  
—

$

79

$

24

$

37

$

140

$

16

$

(1)

$

— $

15

$

23

$

— $

— $

23

—

—

—

—

23

—

—

23

338

 
 
 
   
 
 
 
   
 
 
 
 
   
   
   
     
   
   
   
 
   
   
 
     
   
   
 
 
 
   
   
   
     
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
 
   
   
 
   
   
   
 
   
   
   
 
 
   
   
   
   
   
   
   
   
   
   
   
Table of Contents

As of December 31, 2017

Assets

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Pepco

DPL

ACE

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Cash equivalents (a)

$

36   $

—   $

—   $

36   $

—   $

—   $

—   $ —   $

29   $

—   $

—   $

29

Rabbi trust investments

Cash equivalents

Fixed income

Life insurance contracts
Rabbi trust investments subtotal
(b)

Total assets

Liabilities
Deferred compensation
obligation
Mark-to-market derivative
liabilities
Effect of netting and allocation
of collateral
Mark-to-market derivative
liabilities subtotal

Total liabilities

44  
—  
—  

44

80

—  

—  

—  

—

—

—  
12  
23  

35

35

(4)  

—  

—  

—

(4)

—  
—  
22  

22

22

—  

—  

—  

—

—

44  
12  
45  

101

137

(4)  

—  

—  

—

(4)

—  
—  
—  

—

—

—  

(1)  

1  

—

—

—  
—  
—  

—

—

(1)  

—  

—  

—

(1)

—  
—  
—  

—

—

—  

—  

—  

—

—

—  
—  
—  

—

—

(1)  

(1)  

1  

—

(1)

—  
—  
—  

—

29

—  

—  

—  

—

—

—  
—  
—  

—

—

—  

—  

—  

—

—

—  
—  
—  

—

—

—  

—  

—  

—

—

—

—

—

—

29

—

—

—

—

—

$

$

80

Total net assets (liabilities)
__________
(a) PHI excludes cash of $39 million and $12 million at December 31, 2018 and 2017 and includes long term restricted cash of $19 million and $23 million at December 31,
2018 and 2017 which is reported in Other deferred debits in the Consolidated Balance Sheets.  Pepco excludes cash of $15 million and $4 million at December 31, 2018
and 2017 . DPL excludes cash of $8 million and $2 million at December 31, 2018 and 2017 . ACE excludes cash of $7 million and $2 million at December 31, 2018 and
2017 and includes long-term restricted cash of $19 million and $23 million at December 31, 2018 and 2017 at December 31, 2018 and 2017 which is reported in Other
deferred debits in the Consolidated Balance Sheets.

— $

(1)

$

— $

29

— $

— $

(1)

$

$ 133

29

31

22

$

$

$

(b) The  amount  of  unrealized  gains/(losses)  at  PHI  totaled  $1  million  for  the  years  ended  December  31,  2018  and  2017  ,  respectively.  The  amount  of  unrealized

gains/(losses) at Pepco totaled less than $1 million for the years ended December 31, 2018 and 2017 , respectively.

339

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
 
   
   
 
   
   
   
 
   
   
   
 
 
   
   
   
   
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  following  tables  present  the  fair  value  reconciliation  of  Level  3  assets  and  liabilities  measured  at  fair  value  on  a  recurring  basis  during  the  years  ended
December 31, 2018 and 2017 :

Generation

ComEd

PHI

Exelon

For the year ended December 31,
2018

NDT Fund
Investments

Pledged Assets 
for Zion Station 
Decommissioning

Balance as of January 1, 2018 $

648

$

12

Derivatives

  Mark-to-Market 
  $

552

Other 
Investments

Total
Generation

$

37

  $

1,249

Derivatives

  Mark-to-Market
  $

(256)

Life Insurance
Contracts (c)

Eliminated in
Consolidation

Total

$

22   $

—   $

1,015

Total realized / unrealized
gains (losses)

Included in net income

Included in noncurrent
payables to affiliates

Included in payable for
Zion Station
decommissioning

Included in regulatory
assets/liabilities

Change in collateral

Purchases, sales, issuances
and settlements

Purchases

Sales

Issuances

Settlements

Transfers into Level 3

Transfers out of Level 3

Other miscellaneous

Balance as of December 31,
2018

—

(1)

—

—

—

36

—
—  

(140)

—

—
—  

$

543

$

—   $

The amount of total (losses)
gains included in income
attributed to the change in
unrealized (losses) gains
related to assets and liabilities
held as of December 31, 2018 $

(5)

  $

—   $

165  

—  

—  

7

—  
—  

(105)

(a)  

—

—

—  

(5)

1

190 (e)  

(20)
—  
—  
—  
—  
—  

(4)
—  

5

(22)

(d)  

(36)

(d)  

—

575

3

—  

—  

—  
—  

4
—  
—  
—  
—  

(2)

(102)

(1)

7  

—  

(5)

231  

(24)
—  

(135)

(22)

(38)
—  

—  

—  

—  

7 (b)  
—  

—  
—  
—  
—  
—  
—  
—  

4  

—  

—  

—  
—  

—  
—  
—  
12  
—  
—  
—  

—  

1

—  

(1)
—  

—  
—  
—  
—  
—  
—  
—  

42

$

1,160

  $

(249)

$

38

$

—   $

(98)

—

7

6

(5)

231

(24)

—

(123)

(22)

(38)

—

949

3

  $

163   $

—  

$

—   $

—   $

163

$

$

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation

ComEd

PHI

Exelon

For the year ended December 31,
2017

NDT Fund
Investments

Pledged Assets
for Zion Station
Decommissioning

Balance as of January 1, 2017 $

677

$

19

Derivatives

  Mark-to-Market
  $

493

Other
Investments

Total
Generation

$

42

  $

1,231

Derivatives

  Mark-to-Market
  $

(258)

Life Insurance
Contracts (c)

Eliminated in
Consolidation

Total

$

20

  $

—   $

993

Total realized / unrealized
gains (losses)

Included in net income

Included in noncurrent
payables to affiliates

Included in payable for
Zion Station
decommissioning

Included in regulatory
assets/liabilities

Change in collateral

Purchases, sales, issuances
and settlements

Purchases

Sales

Issuances

Settlements

Transfers into Level 3

Transfers out of Level 3

Other miscellaneous

Balance as of December 31,
2017

$

$

3

6

—

—  

—

64

—
—  

(102)

—

—
—   $

648

$

—  

—  

(8)

—  
—  

1
—  
—  
—  
—  
—  
—   $

(90)

(a)  

—  

—  

—  
20  

178  

(16)
—  

(8)

(6)

(d)  

(d)  

(50)
31  

12

  $

552

The amount of total gains
(losses) included in income
attributed to the change in
unrealized gains (losses)
related to assets and liabilities
held as of December 31, 2017 $
__________
(a)

1

$

—   $

254

3

—  

—  

—  
—  

5
—  
—  
—  
—  

(84)

6  

(8)

—  
20  

248  

(16)
—  

(110)

(6)

(11)

(2)

  $

(61)
29   $

—  

—  

—  

2 (b)  
—  

—  
—  
—  
—  
—  
—  
—  

37

$

1,249

  $

(256)

3

  $

258   $

—  

$

$

$

$

$

$

3

—  

—  
—  

—  

—  

(1)
—  

—  

—  
—   $

22

  $

—  

(6)

—  

6
—  

—  
—  
—  
—  
—  
—  
—   $

(81)

—

(8)

8

20

248

(16)

(1)

(110)

(6)

(61)

29

—   $

1,015

3

  $

—   $

261

(b)

Includes  a  reduction  for  the  reclassification  of  $265  million  and  $352  million  of  realized  gains  due  to  the  settlement  of  derivative  contracts  for  the  years  ended
December 31, 2018 and 2017 , respectively.
Includes $24 million of decreases in fair value and an increase for realized losses due to settlements of $17 million recorded in purchased power expense associated with
floating-to-fixed energy swap contracts with unaffiliated suppliers for the year ended December 31, 2018 . Includes $18 million of decreases in fair value and an increase
for  realized  losses  due  to  settlements  of  $20  million  recorded  in  purchased  power  expense  associated  with  floating-to-fixed  energy  swap  contracts  with  unaffiliated
suppliers for the year ended December 31, 2017 .

(c) The amounts represented are life insurance contracts at Pepco.
(d) Transfers into and out of Level 3 generally occur when the contract tenor becomes less and more observable respectively, primarily due to changes in market liquidity or

assumptions for certain commodity contracts.
Includes $(19) million of fair value from contracts acquired as a result of the Everett Marine Terminal acquisition

(e)

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables  present the income statement  classification of the total realized and unrealized gains (losses) included in income for Level 3 assets and
liabilities measured at fair value on a recurring basis during the years ended December 31, 2018 and 2017 :

Generation

Purchased
Power and
Fuel

Operating
Revenues

PHI

Exelon

Other, net

Operating and 
Maintenance

Operating
Revenues

Purchased
Power and
Fuel

Operating and 
Maintenance

Other, net

Total (losses) gains included in net
income for the year ended December 31,
2018

$

Change in the unrealized gains relating
to assets and liabilities held for the year
ended December 31, 2018

(7)   $

(93)   $

3   $

4   $

(7)   $

(93)   $

4   $

3

144  

21  

(2)

—  

144  

21  

—  

(2)

Total gains (losses) included in net
income for the year ended December
31, 2017

$

Change in the unrealized gains
(losses) relating to assets and
liabilities held for the year ended
December 31, 2017

Generation

Purchased
Power and
Fuel

Operating
Revenues

PHI

Exelon

Other, net

Operating and 
Maintenance

Operating
Revenues

Purchased
Power and
Fuel

Operating and 
Maintenance

Other, net

28   $

(126)   $

6   $

3   $

28   $

(126)   $

3   $

290  

(36)  

4  

3  

290  

(36)  

3  

6

4

Valuation Techniques Used to Determine Fair Value

The following describes the valuation techniques used to measure the fair value of the assets and liabilities shown in the tables above.

Cash  Equivalents  (Exelon,  Generation,  ComEd,  PECO,  BGE,  PHI,  Pepco,  DPL  and  ACE).  The  Registrants’  cash  equivalents  include  investments  with
original maturities  of three  months  or less when  purchased.  The  cash  equivalents  shown in the  fair value  tables  are comprised  of investments  in mutual  and
money market funds. The fair values of the shares of these funds are based on observable market prices and, therefore, have been categorized in Level 1 in the
fair value hierarchy.

NDT  Fund  Investments  and  Pledged  Assets  for  Zion  Station  Decommissioning  (Exelon  and  Generation).  The  trust  fund  investments  have  been
established to satisfy Generation’s and CENG's nuclear decommissioning obligations as required by the NRC. The NDT funds hold debt and equity securities
directly  and  indirectly  through  commingled  funds  and  mutual  funds,  which  are  included  in  Equities  and  Fixed  Income.  Generation’s  and  CENG's  NDT  fund
investments policies outline investment guidelines for the trusts and limit the trust funds’ exposures to investments in highly illiquid markets and other alternative
investments.  Investments  with  maturities  of  three  months  or  less  when  purchased,  including  certain  short-term  fixed  income  securities  are  considered  cash
equivalents and included in the recurring fair value measurements hierarchy as Level 1 or Level 2.

With respect to individually held equity securities, the trustees obtain prices from pricing services, whose prices are generally obtained from direct feeds from
market exchanges, which Generation is able to independently corroborate. The fair values of equity securities held directly by the trust funds which are based on
quoted prices in active markets are categorized in Level 1. Certain equity securities have been categorized as Level 2 because they are based on evaluated
prices that reflect observable market information, such as actual trade information or similar securities. Equity securities held individually are primarily traded on
the  New  York  Stock  Exchange  and  NASDAQ-Global  Select  Market,  which  contain  only  actively  traded  securities  due  to  the  volume  trading  requirements
imposed by these exchanges.

For fixed income securities, multiple prices from pricing services are obtained whenever possible, which enables cross-provider validations in addition to checks
for unusual daily movements. A primary price source is identified based on asset type, class or issue for each security. With respect to individually held fixed
income securities, the

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

trustees  monitor  prices  supplied  by  pricing  services  and  may  use  a  supplemental  price  source  or  change  the  primary  price  source  of  a  given  security  if  the
portfolio managers challenge an assigned price and the trustees determine that another price source is considered to be preferable. Generation has obtained an
understanding  of  how  these  prices  are  derived,  including  the  nature  and  observability  of  the  inputs  used  in  deriving  such  prices.  Additionally,  Generation
selectively  corroborates  the  fair  values  of  securities  by  comparison  to  other  market-based  price  sources.  U.S.  Treasury  securities  are  categorized  as  Level  1
because  they  trade  in  a  highly  liquid  and  transparent  market.  The  fair  values  of  fixed  income  securities,  excluding  U.S.  Treasury  securities,  are  based  on
evaluated prices that reflect observable market information, such as actual trade information or similar securities, adjusted for observable differences and are
categorized in Level 2. The fair values of private placement fixed income securities, which are included in Corporate debt, are determined using a third-party
valuation that contains significant unobservable inputs and are categorized in Level 3.

Equity and fixed income commingled funds and mutual funds are maintained by investment companies and hold certain investments in accordance with a stated
set of fund objectives such as holding short-term fixed income securities or tracking the performance of certain equity indices by purchasing equity securities to
replicate the capitalization and characteristics of the indices. The values of some of these funds are publicly quoted. For mutual funds which are publicly quoted,
the funds are valued based on quoted prices in active markets and have been categorized as Level 1. For commingled funds and mutual funds, which are not
publicly quoted, the funds are valued using NAV as a practical expedient for fair value, which is primarily derived from the quoted prices in active markets on the
underlying securities, and are not classified within the fair value hierarchy. These investments typically can be redeemed monthly with 30 or less days of notice
and without further restrictions.

Derivative instruments consisting primarily of futures and interest rate swaps to manage risk are recorded at fair value. Over the counter derivatives are valued
daily based on quoted prices in active markets and trade in open markets, and have been categorized as Level 1. Derivative instruments other than over the
counter derivatives are valued based on external price data of comparable securities and have been categorized as Level 2.

Middle market lending are investments in loans or managed funds which lend to private companies. Generation elected the fair value option for its investments
in certain limited partnerships that invest in middle market lending managed funds. The fair value of these loans is determined using a combination of valuation
models including cost models, market models, and income models. Investments in loans are categorized as Level 3 because the fair value of these securities is
based  largely  on  inputs  that  are  unobservable  and  utilize  complex  valuation  models.  Managed  funds  are  valued  using  NAV  or  its  equivalent  as  a  practical
expedient, and therefore, are not classified within the fair value hierarchy. Investments in middle market lending typically cannot be redeemed until maturity of
the term loan.

Private equity and real estate investments include those in limited partnerships that invest in operating companies and real estate holding companies that are not
publicly traded on a stock exchange, such as, leveraged buyouts, growth capital, venture capital, distressed investments, investments in natural resources, and
direct investments in pools of real estate properties. The fair value of private equity and real estate investments is determined using NAV or its equivalent as a
practical expedient, and therefore, are not classified within the fair value hierarchy. These investments typically cannot be redeemed and are generally liquidated
over a period of 8 to 10 years from the initial investment date, which is based on Exelon’s understanding of the investment funds. Private equity and real estate
valuations are reported by the fund manager and are based on the valuation of the underlying investments, which include inputs such as cost, operating results,
discounted future cash flows, market based comparable data, and independent appraisals from sources with professional qualifications. These valuation inputs
are unobservable.

As of December 31, 2018 , Generation has outstanding commitments to invest in fixed income, middle market lending, private equity and real estate investments
of  approximately  $127  million  , $224  million  , $326  million  and $273  million  ,  respectively.  These  commitments  will  be  funded  by  Generation’s  existing  NDT
funds.

Concentrations of Credit Risk. Generation evaluated its NDT portfolios for the existence of significant concentrations of credit risk as of December 31, 2018 .
Types of concentrations that were evaluated include, but are not limited to, investment concentrations in a single entity, type of industry, foreign country, and
individual fund. As of December 31, 2018 , there were no significant concentrations (generally defined as greater than 10 percent) of risk in Generation's NDT
assets.

See Note 15 — Asset Retirement Obligations for additional information on the NDT fund investments.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Rabbi  Trust  Investments  (Exelon,  Generation,  PECO,  BGE,  PHI,  Pepco,  DPL  and  ACE).  The  Rabbi  trusts  were  established  to  hold  assets  related  to
deferred  compensation  plans  existing  for  certain  active  and  retired  members  of  Exelon’s  executive  management  and  directors.  The  Rabbi  trusts'  assets  are
included in investments in the Registrants’ Consolidated Balance Sheets and consist primarily of money market funds, mutual funds, fixed income securities and
life  insurance  policies.  The  mutual  funds  are  maintained  by  investment  companies  and  hold  certain  investments  in  accordance  with  a  stated  set  of  fund
objectives, which are consistent with Exelon’s overall investment strategy. Money market funds and mutual funds are publicly quoted and have been categorized
as Level 1 given the  clear observability  of the  prices. The  fair values  of fixed income securities are based  on evaluated  prices that  reflect  observable  market
information, such as actual trade information or similar securities, adjusted for observable differences and are categorized in Level 2. The life insurance policies
are valued using the cash surrender value of the policies, net of loans against those policies, which is provided by a third-party. Certain life insurance policies,
which consist primarily of mutual funds that are priced based on observable market data, have been categorized as Level 2 because the life insurance policies
can  be  liquidated  at  the  reporting  date  for  the  value  of  the  underlying  assets.  Life  insurance  policies  that  are  valued  using  unobservable  inputs  have  been
categorized as Level 3.

Mark-to-Market Derivatives (Exelon, Generation, ComEd, PHI and DPL) . Derivative contracts are traded in both exchange-based and non-exchange-based
markets. Exchange-based  derivatives that are valued using unadjusted  quoted  prices in active markets  are categorized  in Level 1 in the fair value  hierarchy.
Certain derivatives’ pricing is verified using indicative price quotations available through brokers or over-the-counter, on-line exchanges and are categorized in
Level 2. These price quotations reflect the average of the bid-ask, mid-point prices and are obtained from sources that the Registrants believe provide the most
liquid  market  for  the  commodity.  The  price  quotations  are  reviewed  and  corroborated  to  ensure  the  prices  are  observable  and  representative  of  an  orderly
transaction  between  market  participants.  This  includes  consideration  of  actual  transaction  volumes,  market  delivery  points,  bid-ask  spreads  and  contract
duration.  The  remainder  of  derivative  contracts  are  valued  using  the  Black  model,  an  industry  standard  option  valuation  model.  The  Black  model  takes  into
account inputs such as contract terms, including maturity, and market parameters, including assumptions of the future prices of energy, interest rates, volatility,
credit  worthiness  and  credit  spread.  For  derivatives  that  trade  in  liquid  markets,  such  as  generic  forwards,  swaps  and  options,  model  inputs  are  generally
observable. Such instruments are categorized in Level 2. The Registrants’ derivatives are predominantly at liquid trading points. For derivatives that trade in less
liquid markets with limited pricing information, model inputs generally would include both observable and unobservable inputs. These valuations may include an
estimated basis adjustment from an illiquid trading point to a liquid trading point for which active price quotations are available. Such instruments are categorized
in Level 3.

Exelon may utilize fixed-to-floating interest rate swaps as a means to achieve its targeted level of variable-rate debt as a percent of total debt. In addition, the
Registrants  may  utilize  interest  rate  derivatives  to  lock  in  interest  rate  levels  in  anticipation  of  future  financings.  Exelon  determines  the  current  fair  value  by
calculating the net present value of expected payments and receipts under the swap agreement, based on and discounted by the market's expectation of future
interest  rates.  Additional  inputs  to  the  net  present  value calculation  may  include  the  contract  terms,  counterparty  credit  risk and  other  market  parameters.  As
these inputs are based on observable data and valuations of similar instruments, the interest rate swaps are categorized in Level 2 in the fair value hierarchy.
See Note 12 — Derivative Financial Instruments for additional information on mark-to-market derivatives.

Deferred  Compensation  Obligations  (Exelon,  Generation,  ComEd,  PECO,  BGE,  PHI,  Pepco,  DPL  and  ACE).    The  Registrants’  deferred  compensation
plans  allow  participants  to  defer  certain  cash  compensation  into  a  notional  investment  account.  The  Registrants  include  such  plans  in  other  current  and
noncurrent liabilities in their Consolidated Balance Sheets. The value of the Registrants’ deferred compensation obligations is based on the market value of the
participants’ notional investment accounts. The underlying notional investments are comprised primarily of equities, mutual funds, commingled funds and fixed
income  securities  which  are  based  on  directly  and  indirectly  observable  market  prices.  Since  the  deferred  compensation  obligations  themselves  are  not
exchanged in an active market, they are categorized as Level 2 in the fair value hierarchy.

The  value  of  certain  employment  agreement  obligations  (which are included  with the  Deferred  Compensation  Obligation  in  the  tables  above)  are based  on  a
known and certain stream of payments to be made over time and are categorized as Level 2 within the fair value hierarchy.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Additional Information Regarding Level 3 Fair Value Measurements (Exelon, Generation, ComEd, PHI, Pepco, DPL and ACE)

NDT  Fund  Investments  and  Pledged  Assets  for  Zion  Station  Decommissioning  (Exelon  and  Generation).      For  middle  market  lending  and  certain
corporate debt securities investments, the fair value is determined using a combination of valuation models including cost models, market models and income
models.  The  valuation  estimates  are  based  on  discounting  the  forecasted  cash  flows,  market-based  comparable  data,  credit  and  liquidity  factors,  as  well  as
other factors that may impact value. Significant judgment is required in the application of discounts or premiums applied for factors such as size, marketability,
credit risk and relative performance.

Because  Generation  relies  on  third-party  fund  managers  to  develop  the  quantitative  unobservable  inputs  without  adjustment  for  the  valuations  of  its  Level  3
investments,  quantitative  information  about  significant  unobservable  inputs  used  in  valuing  these  investments  is  not  reasonably  available  to  Generation.  This
includes information regarding the sensitivity of the fair values to changes in the unobservable inputs. Therefore, Generation has not disclosed such inputs.

Rabbi Trust Investments - Life insurance contracts (Exelon, PHI, Pepco, DPL and ACE). For life insurance policies categorized as Level 3, the fair value is
determined  based  on  the  cash  surrender  value  of  the  policy,  which  contains  unobservable  inputs  and  assumptions.  Because  Exelon  relies  on  its  third-party
insurance provider to develop the inputs without adjustment for the valuations of its Level 3 investments, quantitative information about significant unobservable
inputs used in valuing these investments is not reasonably available to Exelon. Therefore, Exelon has not disclosed such inputs.

Mark-to-Market Derivatives (Exelon, Generation and ComEd). For valuations that include both observable and unobservable inputs, if the unobservable input
is  determined  to  be  significant  to  the  overall  inputs,  the  entire  valuation  is  categorized  in  Level  3.  This  includes  derivatives  valued  using  indicative  price
quotations  whose  contract  tenure  extends  into  unobservable  periods.  In  instances  where  observable  data  is  unavailable,  consideration  is  given  to  the
assumptions  that  market  participants  would  use  in  valuing  the  asset  or  liability.  This  includes  assumptions  about  market  risks  such  as  liquidity,  volatility  and
contract  duration.  Such  instruments  are  categorized  in  Level  3  as  the  model  inputs  generally  are  not  observable.  Forward  price  curves  for  the  power  market
utilized  by  the  front  office  to  manage  the  portfolio,  are  reviewed  and  verified  by  the  middle  office,  and  used  for  financial  reporting  by  the  back  office.  The
Registrants consider credit and nonperformance risk in the valuation of derivative contracts categorized in Level 2 and 3, including both historical and current
market  data in its assessment  of credit  and  nonperformance  risk by counterparty.  Due to master  netting agreements  and collateral posting requirements,  the
impacts of credit and nonperformance risk were not material to the financial statements.

Disclosed  below  is  detail  surrounding  the  Registrants’  significant  Level  3  valuations.  The  calculated  fair  value  includes  marketability  discounts  for  margining
provisions  and  other  attributes.  Generation’s  Level  3  balance  generally  consists  of  forward  sales  and  purchases  of  power  and  natural  gas  and  certain
transmission congestion contracts. Generation utilizes various inputs and factors including market data and assumptions that market participants would use in
pricing  assets  or  liabilities  as  well  as  assumptions  about  the  risks  inherent  in  the  inputs  to  the  valuation  technique.  The  inputs  and  factors  include  forward
commodity prices, commodity price volatility, contractual volumes, delivery location, interest rates, credit quality of counterparties and credit enhancements.

For commodity derivatives, the primary input to the valuation models is the forward commodity price curve for each instrument. Forward commodity price curves
are derived by risk management for liquid locations and by the traders and portfolio managers for illiquid locations. All locations are reviewed and verified by risk
management considering published exchange transaction prices, executed bilateral transactions, broker quotes, and other observable or public data sources.
The relevant forward commodity curve used to value each of the derivatives depends on a number of factors, including commodity type, delivery location, and
delivery period. Price volatility varies by commodity and location. When appropriate,  Generation discounts future cash flows using risk free interest rates with
adjustments to reflect the credit quality of each counterparty for assets and Generation’s own credit quality for liabilities. The level of observability of a forward
commodity price varies generally due to the delivery location and delivery period. Certain delivery locations including PJM West Hub (for power) and Henry Hub
(for natural gas) are more liquid and prices are observable for up to three years in the future. The observability period of volatility is generally shorter than the
underlying power curve used in option valuations. The forward curve for a less liquid location is estimated by using the forward curve from the liquid location and
applying a spread to represent the cost to transport the commodity to the delivery location. This spread does not typically represent a majority of the instrument’s
market price. As a result, the change in fair value is closely tied to liquid market movements and not

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

a change in the applied spread. The change in fair value associated with a change in the spread is generally immaterial. An average spread calculated across all
Level 3 power and gas delivery locations is approximately $3.18 and $0.64 for power and natural gas, respectively. Many of the commodity derivatives are short
term in nature and thus a majority of the fair value may be based on observable inputs even though the contract as a whole must be classified as Level 3.

On December 17, 2010, ComEd entered into several 20-year floating to fixed energy swap contracts with unaffiliated suppliers for the procurement of long-term
renewable  energy and  associated RECs. See Note  12 — Derivative Financial Instruments for additional information.  The fair value of these swaps has been
designated as a Level 3 valuation due to the long tenure of the positions and internal modeling assumptions. The modeling assumptions include using natural
gas heat rates to project long term forward power curves adjusted by a renewable factor that incorporates time of day and seasonality factors to reflect accurate
renewable energy pricing. In addition, marketability reserves are applied to the positions based on the tenor and supplier risk.

The following tables present the significant inputs to the forward curve used to value these positions:

Type of trade

Fair Value at December
31, 2018

Valuation
Technique

Unobservable
Input

Range

Mark-to-market derivatives—Economic hedges (Exelon
and Generation) (a)(b)

  $

Discounted
Cash Flow

443  

  Forward power price

  Forward gas price

  Option Model

  Volatility percentage

$12

$0.78

10%

Mark-to-market derivatives—Proprietary trading (Exelon
and Generation) (a)(b)

  $

Discounted
Cash Flow

56  

  Forward power price

$14

Mark-to-market derivatives (Exelon and ComEd)

  $

Discounted
Cash Flow

(249)  

  Forward heat rate (c)
  Marketability reserve

  Renewable factor

10x

4%

86%

-

-

-

-

-

-

-

$174

$12.38

277%

$174

11x

8%

120%

______
(a) The valuation techniques, unobservable inputs and ranges are the same for the asset and liability positions.
(b) The fair values do not include cash collateral posted on level three positions of $76 million as of December 31, 2018 .
(c) Quoted forward natural gas rates are utilized to project the forward power curve for the delivery of energy at specified future dates. The natural gas curve is extrapolated

beyond its observable period to the end of the contract’s delivery.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Type of trade

Fair Value at
December 31, 2017

Valuation
Technique

Unobservable
Input

Range

Mark-to-market derivatives—Economic hedges (Exelon
and Generation) (a)(b)

  $

Discounted
Cash Flow

445  

  Forward power price

  Forward gas price

  Option Model

  Volatility percentage

$3

$1.27

11%

Mark-to-market derivatives—
Proprietary trading (Exelon and Generation) (a)(b)

Mark-to-market derivatives (Exelon and ComEd)

  $

  $

Discounted
Cash Flow

26  

Discounted
Cash Flow

(256)

  Forward power price

$14

  Forward heat rate (c)
  Marketability reserve

  Renewable factor

9x

4%

88%

-

-

-

-

-

-

-

$124

$12.80

139%

$94

10x

8%

120%

__________
(a) The valuation techniques, unobservable inputs and ranges are the same for the asset and liability positions.
(b) The fair values do not include cash collateral posted on level three positions $81 million as of December 31, 2017 .
(c) Quoted forward natural gas rates are utilized to project the forward power curve for the delivery of energy at specified future dates. The natural gas curve is extrapolated

beyond its observable period to the end of the contract’s delivery.

The inputs listed above, which are as of the balance sheet date, would have a direct impact on the fair values of the above instruments if they were adjusted.
The significant unobservable inputs used in the fair value measurement of Generation’s commodity derivatives are forward commodity prices and for options is
price  volatility.  Increases  (decreases)  in  the  forward  commodity  price  in  isolation  would  result  in  significantly  higher  (lower)  fair  values  for  long  positions
(contracts that give Generation the obligation or option to purchase a commodity), with offsetting impacts to short positions (contracts that give Generation the
obligation or right to sell a commodity). Increases (decreases) in volatility would increase (decrease) the value for the holder of the option (writer of the option).
Generally, a change in the estimate of forward commodity prices is unrelated to a change in the estimate of volatility of prices. An increase to the reserves listed
above  would  decrease  the  fair  value  of  the  positions.  An  increase  to  the  heat  rate  or  renewable  factors  would  increase  the  fair  value  accordingly.  Generally,
interrelationships exist between market prices of natural gas and power. As such, an increase in natural gas pricing would potentially have a similar impact on
forward power markets.

12. Derivative Financial Instruments (All Registrants)

The Registrants use derivative instruments to manage commodity price risk, interest rate risk and foreign exchange risk related to ongoing business operations.

Commodity Price Risk (All Registrants)

To  the  extent  the  amount  of  energy  Generation  produces  differs  from  the  amount  of  energy  it  has  contracted  to  sell,  Exelon  and  Generation  are  exposed  to
market fluctuations in the prices of electricity, fossil fuels and other commodities. Each of the Registrants employ established policies and procedures to manage
their risks associated with market fluctuations in commodity prices by entering into physical and financial derivative contracts, including swaps, futures, forwards,
options and short-term and long-term commitments to purchase and sell energy and commodity products. The Registrants believe these instruments, which are
either determined to be non-derivative or classified as economic hedges, mitigate exposure to fluctuations in commodity prices.

Derivative authoritative guidance requires that derivative instruments be recognized as either assets or liabilities at fair value, with changes in fair value of the
derivative recognized in earnings immediately. Other accounting treatments are available through special election and designation, provided they meet specific,
restrictive criteria both at the time of designation and on an ongoing basis. These alternative permissible accounting treatments include normal purchase normal
sale (NPNS), cash flow hedges and fair value hedges. For Generation, all derivative

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(Dollars in millions, except per share data unless otherwise noted)

economic  hedges  related  to  commodities  are  recorded  at  fair  value  through  earnings  for  the  consolidated  company,  referred  to  as  economic  hedges  in  the
following  tables.  Additionally,  Generation  is  exposed  to  certain  market  risks  through  its  proprietary  trading  activities.  The  proprietary  trading  activities  are  a
complement to Generation’s energy marketing portfolio but represent a small portion of Generation’s overall energy marketing activities.

Fair  value  authoritative  guidance  and  disclosures  about  offsetting  assets  and  liabilities  requires  the  fair  value  of  derivative  instruments  to  be  shown  in  the
Combined Notes to Consolidated Financial Statements on a gross basis, even when the derivative instruments are subject to legally enforceable master netting
agreements and qualify for net presentation in the Consolidated Balance Sheet. A master netting agreement is an agreement between two counterparties that
may  have  derivative  and  non-derivative  contracts  with each  other  providing  for  the  net  settlement  of  all referencing  contracts  via  one  payment  stream,  which
takes place as the contracts deliver, when collateral is requested or in the event of default. Generation’s use of cash collateral is generally unrestricted, unless
Generation  is  downgraded  below  investment  grade  (i.e.,  to  BB+  or  Ba1).  In  the  table  below,  Generation’s  energy-related  economic  hedges  and  proprietary
trading derivatives are shown gross. The impact of the netting of fair value balances with the same counterparty that are subject to legally enforceable master
netting  agreements,  as  well  as  netting  of  cash  collateral,  including  margin  on  exchange  positions,  is  aggregated  in  the  collateral  and  netting  column.  As  of
December 31, 2018 , $2 million of cash collateral posted with external counterparties and an additional $12 million of cash collateral posted with ComEd, and as
of December 31, 2017 , $4 million of cash collateral held, was not offset against derivative positions because such collateral was not associated with any energy-
related  derivatives,  were  associated  with  accrual  positions,  or  had  no  positions  to  offset  as  of  the  balance  sheet  date.  Excluded  from  the  tables  below  are
economic hedges that qualify for the NPNS scope exception and other non-derivative contracts that are accounted for under the accrual method of accounting.

ComEd’s use of cash collateral is generally unrestricted unless ComEd is downgraded below investment grade (i.e., to BB+ or Ba1).

Cash collateral held by PECO and BGE must be deposited in an unaffiliated major U.S. commercial bank or foreign bank with a U.S. branch office that meet
certain qualifications.

In the  table  below,  DPL's economic  hedges are shown gross.  The  impact of the  netting  of fair value  balances  with the  same counterparty  that  are subject  to
legally enforceable master netting agreements, as well as netting of cash collateral, including margin on exchange positions, is aggregated in the collateral and
netting column.

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(Dollars in millions, except per share data unless otherwise noted)

The following table provides a summary of the derivative fair value balances related to commodity contracts recorded by the Registrants as of December 31,
2018 :

Description

Generation

ComEd

Exelon

Economic
Hedges

Proprietary
Trading

Collateral
and
Netting (a)(d)

Subtotal (b)

Economic
Hedges (c)

Total
Derivatives

Mark-to-market derivative assets (current assets)

$

3,505   $

105   $

(2,809)   $

801   $

—   $

Mark-to-market derivative assets (noncurrent assets)

Total mark-to-market derivative assets

Mark-to-market derivative liabilities (current liabilities)

Mark-to-market derivative liabilities (noncurrent liabilities)

Total mark-to-market derivative liabilities

1,266  

4,771

(3,429)  

(1,203)  

(4,632)

41  

146

(74)  

(20)  

(94)

(862)  

(3,671)  

3,056  

972  

4,028  

445  

1,246  

(447)  

(251)  

(698)  

—  

—

(26)  

(223)  

(249)

Total mark-to-market derivative net assets (liabilities)

$

139

$

52

$

357   $

548   $

(249)

$

801

445

1,246

(473)

(474)

(947)

299

__________
(a) Exelon and Generation net all available amounts allowed under the derivative authoritative guidance on the balance sheet. These amounts include unrealized derivative
transactions with the same counterparty under legally enforceable master netting agreements and cash collateral. In some cases, Exelon and Generation may have other
offsetting exposures, subject to a master netting or similar agreement, such as trade receivables and payables, transactions that do not qualify as derivatives, letters of
credit and other forms of non-cash collateral. These are not reflected in the table above.

(b) Current and noncurrent assets are shown net of collateral of $121 million and $51 million , respectively, and current and noncurrent liabilities are shown net of collateral of
$125 million  and $60 million , respectively.  The  total  cash collateral  posted,  net of  cash  collateral  received  and  offset  against  mark-to-market  assets  and liabilities  was
$357 million at December 31, 2018 .
Includes current and noncurrent liabilities relating to floating-to-fixed energy swap contracts with unaffiliated suppliers.

(c)
(d) Of the collateral posted/(received), $(94) million represents variation margin on the exchanges.

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(Dollars in millions, except per share data unless otherwise noted)

The following table provides a summary of the derivative fair value balances related to commodity contracts recorded by the Registrants as of December 31,
2017 :

Description

Generation

ComEd

Exelon

Economic
Hedges

Proprietary
Trading

Collateral
and
Netting (a)(d)

Subtotal (b)

Economic
Hedges (c)

Total
Derivatives

Mark-to-market derivative assets (current assets)

$

3,061   $

56   $

(2,144)   $

973   $

—   $

Mark-to-market derivative assets (noncurrent assets)

Total mark-to-market derivative assets

Mark-to-market derivative liabilities (current liabilities)

Mark-to-market derivative liabilities (noncurrent liabilities)

Total mark-to-market derivative liabilities

1,164  

4,225

(2,646)  

(1,137)  

(3,783)

12  

68

(43)

(10)

(53)

(845)  

(2,989)  

2,480  

975  

3,455  

331  

1,304  

(209)  

(172)  

(381)  

—  

—

(21)  

(235)  

(256)

Total mark-to-market derivative net assets (liabilities)

$

442

$

15

$

466   $

923   $

(256)

$

973

331

1,304

(230)

(407)

(637)

667

__________
(a) Exelon and Generation net all available amounts allowed under the derivative authoritative guidance on the balance sheet. These amounts include unrealized derivative
transactions with the same counterparty under legally enforceable master netting agreements and cash collateral. In some cases, Exelon and Generation may have other
offsetting exposures, subject to a master netting or similar agreement, such as trade receivables and payables, transactions that do not qualify as derivatives, and letters
of credit and other forms of non-cash collateral. These are not reflected in the table above.

(b) Current and noncurrent assets are shown net of collateral of $169 million and $53 million , respectively, and current and noncurrent liabilities are shown net of collateral of
$167 million  and $77 million , respectively.  The  total  cash collateral  posted,  net of  cash  collateral  received  and  offset  against  mark-to-market  assets  and liabilities  was
$466 million at December 31, 2017 .
Includes current and noncurrent liabilities relating to floating-to-fixed energy swap contracts with unaffiliated suppliers.

(c)
(d) Of the collateral posted/(received), $(117) million represents variation margin on the exchanges.

Economic Hedges (Commodity Price Risk)

Within Exelon, Generation has the most exposure to commodity price risk. As such, Generation uses a variety of derivative and non-derivative instruments to
manage the commodity price risk of its electric generation facilities, including power and gas sales, fuel and power purchases, natural gas transportation and
pipeline  capacity  agreements  and  other  energy-related  products  marketed  and  purchased.  To  manage  these  risks,  Generation  may  enter  into  fixed-price
derivative or non-derivative contracts to hedge the variability in future cash flows from expected sales of power and gas and purchases of power and fuel. The
objectives  for  executing  such  hedges  include  fixing  the  price  for  a  portion  of  anticipated  future  electricity  sales  at  a  level  that  provides  an  acceptable  return.
Generation  is  also  exposed  to  differences  between  the  locational  settlement  prices  of  certain  economic  hedges  and  the  hedged  generating  units.  This  price
difference is actively managed through other instruments which include derivative congestion products, whose changes in fair value are recognized in earnings
each period, and auction revenue rights, which are accounted for on an accrual basis. For the years ended December 31, 2018 , 2017 and 2016 , Exelon and
Generation  recognized  the  following  net  pre-tax  commodity  mark-to-market  gains  (losses)  which  are  also  located  in  the  "Net  fair  value  changes  related  to
derivatives" in the Consolidated Statements of Cash Flows.

Income Statement Location

Operating revenues

Purchased power and fuel

Total Exelon and Generation

For the Years Ended December 31,

2018

2017

Gain (Loss)

2016

  $

  $

(270)   $

(47)  

(317)   $

(126)   $

(43)  

(169)   $

(490)

459

(31)

In  general,  increases  and  decreases  in  forward  market  prices  have  a  positive  and  negative  impact,  respectively,  on  Generation’s  owned  and  contracted
generation positions that have not been hedged. Generation hedges commodity

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(Dollars in millions, except per share data unless otherwise noted)

price risk on a ratable basis over three-year periods. As of December 31, 2018 , the percentage of expected generation hedged for the Mid-Atlantic, Midwest,
New York and ERCOT reportable segments is 89% - 92% , 56% - 59% and 32% - 35% for 2019 , 2020 and 2021 , respectively.

On December 17, 2010, ComEd executed several 20 -year floating-to-fixed energy swap contracts with unaffiliated suppliers for the procurement of long-term
renewable energy and associated RECs. Delivery under the contracts began in June 2012. These contracts are designed to lock in a portion of the long-term
commodity  price  risk  resulting  from  the  renewable  energy  resource  procurement  requirements  in  the  Illinois  Settlement  Legislation.  ComEd  has  not  elected
hedge accounting for these derivative financial instruments. ComEd records the fair value of the swap contracts on its balance sheet. Because ComEd receives
full cost recovery for energy procurement and related costs from retail customers, the change in fair value each period is recorded by ComEd as a regulatory
asset or liability. See Note 4 — Regulatory Matters for additional information.

PECO’s  natural  gas  procurement  policy  is  designed  to  achieve  a  reasonable  balance  of  long-term  and  short-term  gas  purchases  under  different  pricing
approaches  to  achieve  system  supply  reliability  at  the  least  cost.  PECO’s  reliability  strategy  is  two-fold.  First,  PECO  must  assure  that  there  is  sufficient
transportation capacity to satisfy delivery requirements. Second, PECO must ensure that a firm source of supply exists to utilize the capacity resources. All of
PECO’s natural gas supply and asset management agreements that are derivatives either qualify for the NPNS scope exception and have been designated as
such, or have no mark-to-market balances because the derivatives are index priced. Additionally, in accordance with the 2018 PAPUC PGC settlement and to
reduce  the  exposure  of  PECO and  its  customers  to  natural  gas  price  volatility,  PECO  has  continued  its  program  to  purchase  natural  gas  for  both  winter  and
summer supplies using a layered approach of locking-in prices ahead of each season with long-term gas purchase agreements (those with primary terms of at
least twelve months). Under the terms of the 2018 and previous PGC settlements, PECO is required to lock in (i.e., economically hedge) the price of a minimum
volume of its long-term gas commodity purchases. PECO’s gas-hedging program is designed to cover about 20% of planned natural gas purchases in support of
projected firm sales. The hedging program for natural gas procurement has no direct impact on PECO’s results of operations and financial position as natural
gas costs are fully recovered from customers under the PGC.

BGE  has  contracts  to  procure  SOS  electric  supply  that  are  executed  through  a  competitive  procurement  process  approved  by  the  MDPSC.  The  SOS  rates
charged recover BGE’s wholesale power supply costs and include an administrative fee. BGE’s commodity price risk related to electric supply procurement is
limited.  BGE  locks  in  fixed  prices  for  all  of  its  SOS  requirements  through  full  requirements  contracts.  Certain  of  BGE’s  full  requirements  contracts,  which  are
considered  derivatives,  qualify  for  the  NPNS  scope  exception  under  current  derivative  authoritative  guidance.  Other  BGE  full  requirements  contracts  are  not
derivatives.

BGE provides natural gas to its customers under a MBR mechanism approved by the MDPSC. Under this mechanism, BGE’s actual cost of gas is compared to
a  market  index  (a  measure  of  the  market  price  of  gas  in  a  given  period).  The  difference  between  BGE’s  actual  cost  and  the  market  index  is  shared  equally
between  shareholders  and  customers.  BGE  must  also  secure  fixed  price  contracts  for  at  least  10% ,  but  not  more  than  20% ,  of  forecasted  system  supply
requirements for flowing (i.e., non-storage) gas for the November through March period. These fixed-price contracts are not subject to sharing under the MBR
mechanism.  BGE  also  ensures  it  has  sufficient  pipeline  transportation  capacity  to  meet  customer  requirements.  BGE’s  natural  gas  supply  and  asset
management agreements qualify for the NPNS scope exception and result in physical delivery.

Pepco has contracts to procure SOS electric supply that are executed through a competitive procurement process approved by the MDPSC and DCPSC. The
SOS  rates  charged  recover  Pepco's  wholesale  power  supply  costs  and  include  an  administrative  fee.  The  administrative  fee  includes  an  incremental  cost
component  and  a  shareholder  return  component  for  residential  and  commercial  rate  classes.  Pepco’s  commodity  price  risk  related  to  electric  supply
procurement is limited. Pepco locks in fixed prices for its SOS requirements through full requirements contracts. Certain of Pepco’s full requirements contracts,
which are considered derivatives, qualify for the NPNS scope exception under current derivative authoritative guidance. Other Pepco full requirements contracts
are not derivatives.

DPL has contracts to procure SOS electric supply that are executed through a competitive procurement process approved by the MDPSC and the DPSC. The
SOS  rates  charged  recover  DPL's  wholesale  power  supply  costs.  In  Delaware,  DPL  is  also  entitled  to  recover  a  Reasonable  Allowance  for  Retail  Margin
(RARM). The RARM includes a fixed annual margin of approximately $2.75 million , plus an incremental cost component and a cash working capital allowance.
In Maryland, DPL charges an administrative fee intended to allow it to recover its administrative

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(Dollars in millions, except per share data unless otherwise noted)

costs. DPL locks in fixed prices for its SOS requirements through full requirements contracts. DPL’s commodity price risk related to electric supply procurement
is  limited.  Certain  of  DPL’s  full  requirements  contracts,  which  are  considered  derivatives,  qualify  for  the  NPNS  scope  exception  under  current  derivative
authoritative guidance. Other DPL full requirements contracts are not derivatives.

DPL  provides  natural  gas  to  its  customers  under  an  Annual  GCR  mechanism  approved  by  the  DPSC.  Under  this  mechanism,  DPL’s  Annual  GCR  Filing
establishes a future GCR for firm bundled sales customers by using a forecast of demand and commodity costs. The actual costs are trued up against forecast
on a monthly basis and any shortfall or excess is carried forward as a recovery balance in the next GCR filing. The demand portion of the GCR is based upon
DPL’s firm transportation and storage contracts. DPL has firm deliverability of swing and seasonal storage; a liquefied natural gas facility and firm transportation
capacity to meet customer demand and provide a reserve margin. The commodity portion of the GCR includes a commission approved hedging program which
is intended to reduce gas commodity price volatility while limiting the firm natural gas customers’ exposure to adverse changes in the market price of natural gas.
The  hedge  program  requires  that  DPL  hedge,  on  a  non-discretionary  basis,  an  amount  equal  to  50%  of  estimated  purchase  requirements  for  each  month,
including  estimated  monthly  purchases  for  storage  injections.  The  50%  hedge  monthly  target  is  achieved  by  hedging  1/12th  of  the  50%  target  each  month
beginning  12-months  prior  to  the  month  in  which  the  physical  gas  is  to  be  purchased.  Currently,  DPL  uses  only  exchange  traded  futures  for  its  gas  hedging
program,  which  are  considered  derivatives,  however,  it  retains  the  capability  to  employ  other  physical  and  financial  hedges  if  needed.  DPL  has  not  elected
hedge  accounting  for  these  derivative  financial  instruments.  Because  of  the  DPSC-approved  fuel  adjustment  clause  for  DPL's  derivatives,  the  change  in  fair
value  of  the  derivatives  each  period,  in  addition  to  all  premiums  paid  and  other  transaction  costs  incurred  as  part  of  the  Gas  Hedging  Program,  are  fully
recoverable and are recorded by DPL as regulatory assets or liabilities. DPL’s physical gas purchases are currently all daily, monthly or intra-month transactions.
From  time  to  time,  DPL  will  enter  into  seasonal  purchase  or  sale  arrangements,  however,  there  are  none  currently  in  the  portfolio.  Certain  of  DPL's  full
requirements contracts, which are considered derivatives, qualify for the NPNS scope exception under current derivative authoritative guidance. Other DPL full
requirements contracts are not derivatives.

ACE  has  contracts  to  procure  BGS  electric  supply  that  are  executed  through  a  competitive  procurement  process  approved  by  the  NJBPU.  The  BGS  rates
charged  recover  ACE's  wholesale  power  supply  costs.  ACE  does  not  make  any  profit  or  incur  any  loss  on  the  supply  component  of  the  BGS  it  supplies  to
customers.  ACE’s  commodity  price  risk  related  to  electric  supply  procurement  is  limited.  ACE  locks  in  fixed  prices  for  its  BGS  requirements  through  full
requirements  contracts.  Certain  of  ACE’s  full  requirements  contracts,  which  are  considered  derivatives,  qualify  for  the  NPNS  scope  exception  under  current
derivative authoritative guidance. Other ACE full requirements contracts are not derivatives.

Proprietary Trading (Commodity Price Risk)

Generation also executes commodity derivatives for proprietary trading purposes. Proprietary trading includes all contracts executed with the intent of benefiting
from shifts or changes in market prices as opposed to those executed with the intent of hedging or managing risk. Proprietary trading activities are subject to
limits established  by Exelon’s  RMC. The  proprietary  trading  portfolio  is subject  to  a  risk management  policy that  includes  stringent  risk management  limits to
manage  exposure  to  market  risk.  Additionally,  the  Exelon  risk  management  group  and  Exelon's  RMC  monitor  the  financial  risks  of  the  proprietary  trading
activities.  The  proprietary  trading  activities  are  a  complement  to  Generation's  energy  marketing  portfolio  but  represent  a  small  portion  of  Generation's  overall
revenue from energy marketing activities. Gains and losses associated with proprietary trading are reported as Operating revenues in Exelon’s and Generation’s
Consolidated  Statements  of  Operations  and  Comprehensive  Income.  For  the  years  ended  December  31,  2018  ,  2017  and  2016  ,  Exelon  and  Generation
recognized the following net pre-tax commodity mark-to-market gains (losses) which are also included in the "Net fair value changes related to derivatives" in the
Consolidated Statements of Cash Flows. The Utility Registrants do not execute derivatives for proprietary trading purposes.

Income Statement Location

Operating revenues

For the Years Ended December 31,

2018

2017

Gain

2016

  $

17   $

6   $

2

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(Dollars in millions, except per share data unless otherwise noted)

Interest Rate and Foreign Exchange Risk (All Registrants)

The Registrants use a combination of fixed-rate and variable-rate debt to manage interest rate exposure. The Registrants also utilize interest rate swaps, which
are treated as economic hedges, to manage their interest rate exposure. To manage foreign exchange rate exposure associated with international commodity
purchases in currencies other than U.S. dollars, Generation utilizes foreign currency derivatives, which are treated as economic hedges. Below is a summary of
the interest rate and foreign exchange hedge balances as of December 31, 2018 :

Description

Mark-to-market derivative assets (current assets)

Mark-to-market derivative assets (noncurrent assets)

Total mark-to-market derivative assets

Mark-to-market derivative liabilities (current liabilities)

Mark-to-market derivative liabilities (noncurrent liabilities)

Total mark-to-market derivative liabilities

Total mark-to-market derivative net assets (liabilities)

Economic
Hedges

Generation

Collateral
and
Netting (a)

  Exelon Corporate  

Exelon

Subtotal

Economic 
Hedges

Total

$

$

5

8

13

(4)

(2)

(6)

7

$

$

  $

(2)

(1)

(3)

2  

1  

3  

3

7

10

(2)

(1)

(3)

  $

—   $

—  

—  

—  

(4)

(4)

—   $

7

  $

(4)

  $

3

7

10

(2)

(5)

(7)

3

__________
(a) Exelon and Generation net all available amounts allowed under the derivative authoritative guidance on the balance sheet. These amounts include unrealized derivative
transactions with the same counterparty under legally enforceable master netting agreements and cash collateral. In some cases, Exelon and Generation may have other
offsetting counterparty exposures subject to a master netting or similar agreement, such as accrued interest, transactions that do not qualify as derivatives, letters of credit
and other forms of non-cash collateral, which are not reflected in the table above.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table provides a summary of the interest rate and foreign exchange hedge balances recorded by the Registrants as of December 31, 2017 :

Description

Mark-to-market derivative assets (current assets)

Mark-to-market derivative assets (noncurrent assets)

Total mark-to-market derivative assets

Mark-to-market derivative liabilities (current liabilities)

Mark-to-market derivative liabilities (noncurrent liabilities)

Total mark-to-market derivative liabilities

Total mark-to-market derivative net assets (liabilities)

$

$

Derivatives
Designated
as Hedging
Instruments

—   $

3

3

(2)

—  

(2)

1

Generation

Exelon Corporate

Exelon

Economic
Hedges

Collateral
and
Netting (a)

Subtotal

Derivatives 
Designated 
as Hedging 
Instruments

Total

10   $

—  

10

(7)

(2)

(9)

(7)

  $

—  

(7)

7  

—  

7  

3

3

6

(2)

(2)

(4)

  $

—   $

3  

3  

—  

—  

—  

$

1

$

—   $

2

  $

3   $

3

6

9

(2)

(2)

(4)

5

__________
(a) Exelon and Generation net all available amounts allowed under the derivative authoritative guidance on the balance sheet. These amounts include unrealized derivative
transactions with the same counterparty under legally enforceable master netting agreements and cash collateral. In some cases, Exelon and Generation may have other
offsetting counterparty exposures subject to a master netting or similar agreement, such as accrued interest, transactions that do not qualify as derivatives, letters of credit
and other forms of non-cash collateral, which are not reflected in the table above.

Economic Hedges (Interest Rate and Foreign Exchange Risk)

Exelon and Generation execute these instruments to mitigate exposure to fluctuations in interest rates or foreign exchange but for which the fair value or cash
flow hedge elections were not made. On July 1, 2018, Exelon de-designated its fair value hedges related to interest rate risk and Generation de-designated its
cash flow hedges related to interest rate risk. The amount deferred in AOCI associated with the previously designated cash flow hedges will be reclassified into
earnings as the underlying forecasted transaction occurs. The result of this de-designation is that all economic hedges for interest rate swaps will be recorded at
fair value through earnings going forward, referred to as economic hedges in the following tables.

The  following  table  provides  notional  amounts  outstanding  held  by  Exelon  and  Generation  at  December  31,  2018  related  to  interest  rate  swaps  and  foreign
currency exchange rate swaps.

Foreign currency exchange rate swaps

Interest rate swaps

Total

Generation

Exelon Corporate

Exelon

  $

  $

268   $

620  

888   $

—   $

800  

800   $

268

1,420

1,688

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  following  table  provides  notional  amounts  outstanding  held  by  Exelon  and  Generation  at  December  31,  2017  related  to  interest  rate  swaps  and  foreign
currency exchange rate swaps.

Foreign currency exchange rate swaps

Interest rate swaps (a)

Total

Generation

Exelon Corporate

Exelon

  $

  $

94   $

1  

95   $

—   $

—  

—   $

94

1

95

__________
(a) On July 1, 2018, Exelon and Generation de-designated its fair value and cash flow hedges. The table excludes amounts of  $800 million of fixed-to-floating hedges that
were previously designated as fair value hedges by Exelon and $636 million of floating-to-fixed hedges that were previously designated as cash flow hedges by Exelon
and Generation as of December 31, 2017.

For the years ended December 31, 2018 , 2017 and 2016 , Exelon and Generation recognized the following net pre-tax mark-to-market gains (losses) in the
Consolidated  Statements  of  Operations  and  Comprehensive  Income  and  are  included  in  “Net  fair  value  changes  related  to  derivatives”  in  Exelon’s  and
Generation’s Consolidated Statements of Cash Flows.

Generation

Generation

Generation

Total Generation

Exelon

Exelon

Exelon

Total Exelon

  Income Statement Location
  Operating Revenues

  Purchased Power and Fuel

  Interest Expense

  Income Statement Location
  Operating Revenues

  Purchased Power and Fuel

  Interest Expense

Fair Value Hedges (Interest Rate Risk)

2018

2018

For the Years Ended December 31,

2017

Gain (Loss)

2016

7   $

(9)  

(7)  

(9)   $

(6)   $

—  

(3)  

(9)   $

For the Years Ended December 31,

2017

Gain (Loss)

2016

7   $

(9)  

(4)  

(6)   $

(6)   $

—  

(3)  

(9)   $

(10)

—

—

(10)

(10)

—

—

(10)

  $

  $

  $

  $

For derivative instruments that qualify and are designated as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the
hedged item attributable to the hedged risk are recognized in earnings immediately. Exelon had no fixed-to-floating swaps designated as fair value hedges as of
December 31, 2018 and had $800 million notional amounts designated as fair value hedges as of December 31, 2017 . Exelon and Generation include the gain
or loss on the hedged items and the offsetting loss or gain on the related interest rate swaps as follows:

2018

2017

2016

2018

2017

2016

Year Ended December 31,

Exelon

Income Statement Location

Interest expense

  $

(11)   $

(13)   $

(9)   $

20   $

28   $

23

Loss on Swaps

Gain on Borrowings

During the years ended December 31, 2018 , 2017 and 2016 , the impact on the results of operations due to ineffectiveness from fair value hedges were gains
of $9 million , $15 million and $14 million , respectively.

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Cash Flow Hedges (Interest Rate Risk)

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For derivative instruments that qualify and are designated as cash flow hedges, the gain or loss on the effective portion of the derivative will be deferred in AOCI
and reclassified into earnings when the underlying transaction occurs. Exelon and Generation have no floating-to-fixed swaps designated as cash flow hedges
as of December 31, 2018 , and had $636 million notional amounts designated as cash flow hedges as of December 31, 2017 .

The tables below provide the activity of OCI related to cash flow hedges for the years ended December 31, 2018 and 2017 , containing information about the
changes in the fair value of cash flow hedges and the reclassification from AOCI into results of operations. The amounts reclassified from AOCI, when combined
with the impacts of the hedged transactions, result in the ultimate recognition of net revenues or expenses at the contractual price.

For the Year Ended December 31, 2018

Income Statement Location

AOCI derivative loss at December 31, 2017

Effective portion of changes in fair value

Reclassifications from AOCI to net income

AOCI derivative loss at December 31, 2018

  Interest expense

For the Year Ended December 31, 2017

Income Statement Location

AOCI derivative loss at December 31, 2016

Effective portion of changes in fair value

Reclassifications from AOCI to net income

AOCI derivative loss at December 31, 2017

  Interest expense

__________
(a) Amount is net of related income tax expense of $1 million for the year ended December 31, 2017 .

Total Cash Flow Hedge AOCI Activity, Net of Income Tax          

Generation

Total Cash  
Flow Hedges

Exelon

Total Cash 
Flow Hedges

  $

  $

(16)

11  

1  

(4)

$

$

(14)

11  

1  

(2)

Total Cash Flow Hedge AOCI Activity, Net of Income Tax          

Generation

Total Cash  
Flow Hedges

Exelon

Total Cash
Flow Hedges

  $

  $

(19)

(1)

4 (a)  

(16)

$

$

(17)

(1)

4 (a)  

(14)

During the years ended December 31, 2018 , 2017 and 2016 , the impact on the results of operations as a result of ineffectiveness from cash flow hedges was
immaterial. The estimated amount of existing gains and losses that are reported in AOCI at the reporting date that are expected to be reclassified into earnings
within the next twelve months is immaterial.

Proprietary Trading (Interest Rate and Foreign Exchange Risk)

Generation also executes derivative contracts for proprietary trading purposes to hedge risk associated with the interest rate and foreign exchange components
of  underlying  commodity  positions.  Gains  and  losses  associated  with  proprietary  trading  are  reported  as  Operating  revenues  in  Exelon’s  and  Generation’s
Consolidated  Statements  of  Operations  and  Comprehensive  Income  and  are  included  in  “Net  fair  value  changes  related  to  derivatives”  in  Exelon’s  and
Generation’s  Consolidated  Statements  of  Cash  Flows.  For  the  years  ended  December  31,  2018  , 2017 and 2016 ,  Exelon  and  Generation  recognized  the
following net pre-tax commodity mark-to-market gains (losses).

Income Statement Location

Operating revenues

For the Years Ended December 31,

2018

2017

Loss

2016

  $

—   $

(1)   $

(1)

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Credit Risk, Collateral and Contingent-Related Features (All Registrants)

The  Registrants  would  be  exposed  to  credit-related  losses  in  the  event  of  non-performance  by  counterparties  on  executed  derivative  instruments.  The  credit
exposure  of  derivative  contracts,  before  collateral,  is  represented  by  the  fair  value  of  contracts  at  the  reporting  date.  For  commodity  derivatives,  Generation
enters into enabling agreements that allow for payment netting with its counterparties, which reduces Generation’s exposure to counterparty risk by providing for
the  offset  of  amounts  payable  to  the  counterparty  against  amounts  receivable  from  the  counterparty.  Typically,  each  enabling  agreement  is  for  a  specific
commodity and so, with respect to each individual counterparty, netting is limited to transactions involving that specific commodity product, except where master
netting  agreements  exist  with  a  counterparty  that  allow  for  cross  product  netting.  In  addition  to  payment  netting  language  in  the  enabling  agreement,
Generation’s  credit  department  establishes  credit  limits,  margining  thresholds  and  collateral  requirements  for  each  counterparty,  which  are  defined  in  the
derivative contracts. Counterparty credit limits are based on an internal credit review process that considers a variety of factors, including the results of a scoring
model, leverage, liquidity, profitability, credit ratings by credit rating agencies, and risk management capabilities. To the extent that a counterparty’s margining
thresholds are exceeded, the counterparty is required to post collateral with Generation as specified in each enabling agreement. Generation’s credit department
monitors current and forward credit exposure to counterparties and their affiliates, both on an individual and an aggregate basis.

The following tables provide information on Generation’s credit exposure for all derivative instruments, NPNS, and applicable payables and receivables, net of
collateral and instruments that are subject to master netting agreements, as of December 31, 2018 . The tables further delineate that exposure by credit rating of
the  counterparties  and  provide  guidance  on  the  concentration  of  credit  risk  to  individual  counterparties.  The  figures  in  the  tables  below  exclude  credit  risk
exposure from individual retail counterparties, nuclear fuel procurement contracts and exposure through RTOs, ISOs, NYMEX, ICE, NASDAQ, NGX and Nodal
commodity exchanges. Additionally, the figures in the tables below exclude exposures with affiliates, including net receivables with ComEd, PECO, BGE, Pepco,
DPL and ACE of $43 million , $30 million , $24 million , $28 million , $7 million and $5 million as of December 31, 2018 , respectively.

Total
Exposure
Before Credit
Collateral

Credit
Collateral  (a)

Net
Exposure

Number of
Counterparties
Greater than 10%
of Net Exposure

Net Exposure of
Counterparties
Greater than 10%
of Net Exposure

Rating as of December 31, 2018
Investment grade

Non-investment grade

No external ratings

Internally rated — investment grade

Internally rated — non-investment grade

Total

$

$

$

795

133

181

92

—   $

45  

1  

6  

795  

88  

180  

86  

1,201

$

52   $

1,149  

1   $

—  

—  

—  

1   $

$

$

153

—

—

—

153

12

737

324

76

1,149

December 31, 2018

Net Credit Exposure by Type of Counterparty
Financial institutions

Investor-owned utilities, marketers, power producers

Energy cooperatives and municipalities

Other

Total

__________
(a) As of December 31, 2018 , credit collateral held from counterparties where Generation had credit exposure included $17 million of cash and $35 million of letters of credit.

The credit collateral does not include non-liquid collateral.

ComEd’s  power  procurement  contracts  provide  suppliers  with  a  certain  amount  of  unsecured  credit.  The  credit  position  is  based  on  daily,  updated  forward
market prices compared to the benchmark prices. The benchmark prices are the forward prices of energy projected through the contract term and are set at the
point of supplier bid submittals. If the forward market price of energy exceeds the benchmark price on a given day, the suppliers are required to

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

post collateral for the secured credit portion after adjusting for any unpaid deliveries and unsecured credit allowed under the contract. The unsecured credit used
by  the  suppliers  represents  ComEd’s  net  credit  exposure.  The  unsecured  credit  used  by  the  suppliers  represents  ComEd’s  net  credit  exposure.  As  of
December 31, 2018 , ComEd’s net credit exposure to suppliers was immaterial.

ComEd is permitted to recover its costs of procuring energy through the Illinois Settlement Legislation. ComEd’s counterparty credit risk is mitigated by its ability
to recover realized energy costs through customer rates. See Note 4 — Regulatory Matters for additional information.

PECO’s  unsecured  credit  used  by  electric  suppliers  represents  PECO’s  net  credit  exposure.  As  of  December  31,  2018  ,  PECO  had  no  material  net  credit
exposure to electric suppliers.

PECO’s  natural  gas  procurement  plan  is  reviewed  and  approved  annually  on  a  prospective  basis  by  the  PAPUC.  PECO’s  counterparty  credit  risk  under  its
natural gas supply and asset management agreements is mitigated by its ability to recover its natural gas costs through the PGC, which allows PECO to adjust
rates quarterly to reflect realized natural gas prices. As of December 31, 2018 , PECO had no material credit exposure under its natural gas supply and asset
management agreements with investment grade suppliers.

BGE is permitted to recover its costs of procuring energy through the MDPSC-approved procurement tariffs. BGE’s counterparty credit risk is mitigated by its
ability to recover realized energy costs through customer rates. See Note 4 — Regulatory Matters for additional information.

BGE’s  full  requirement  wholesale  electric  power  agreements  that  govern  the  terms  of  its  electric  supply  procurement  contracts,  which  define  a  supplier’s
performance  assurance  requirements,  allow  a  supplier,  or  its  guarantor,  to  meet  its  credit  requirements  with  a  certain  amount  of  unsecured  credit.  As  of
December 31, 2018 , BGE had no material net credit exposure to suppliers.

BGE’s regulated gas business is exposed to market-price risk. At December 31, 2018 , BGE had credit exposure of $3 million related to off-system sales which
is mitigated by parental guarantees, letters of credit, or right to offset clauses within other contracts with those third-party suppliers.

Pepco’s,  DPL's  and  ACE's  power  procurement  contracts  provide  suppliers  with  a  certain  amount  of  unsecured  credit.  The  amount  of  unsecured  credit  is
determined based on the supplier’s lowest credit rating from the major credit rating agencies and the supplier’s tangible net worth. The credit position is based
on the initial market price, which is the forward price of energy on the day a transaction is executed, compared to the current forward price curve for energy. To
the extent that the forward price curve for energy exceeds the initial market price, the supplier is required to post collateral to the extent the credit exposure is
greater than the supplier’s unsecured credit limit. The unsecured credit used by the suppliers represents Pepco’s, DPL's and ACE's net credit exposure. As of
December 31, 2018 , Pepco’s, DPL's and ACE's net credit exposures to suppliers were immaterial.

Pepco is permitted to recover its costs of procuring energy through the MDPSC-approved and DCPSC-approved procurement tariffs. DPL is permitted to recover
its costs of procuring energy through the MDPSC-approved and DPSC-approved procurement tariffs. ACE is permitted to recover its costs of procuring energy
through the NJBPU-approved procurement tariffs. Pepco’s, DPL's and ACE's counterparty credit risks are mitigated by their ability to recover realized energy
costs through customer rates. See Note 4 — Regulatory Matters for additional information.

DPL’s natural gas procurement plan is reviewed and approved annually on a prospective basis by the DPSC. DPL’s counterparty credit risk under its natural gas
supply and asset management agreements is mitigated by its ability to recover its natural gas costs through the GCR, which allows DPL to adjust rates annually
to  reflect  realized  natural  gas  prices.  To  the  extent  that  the  fair  value  of  the  transactions  in  a  net  loss  position  exceeds  the  unsecured  credit  threshold,  then
collateral  is  required  to  be  posted  in  an  amount  equal  to  the  amount  by  which  the  unsecured  credit  threshold  is  exceeded.  Exchange-traded  contracts  are
required to be fully collateralized without regard to the credit rating of the holder. As of December 31, 2018 , DPL's credit exposure under its natural gas supply
and asset management agreements was immaterial.

Collateral (All Registrants)

As part of the normal course of business, Generation routinely enters into physically or financially settled contracts for the purchase and sale of electric capacity,
electricity,  fuels,  emissions  allowances  and  other  energy-related  products.  Certain  of  Generation’s  derivative  instruments  contain  provisions  that  require
Generation to post collateral.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation also enters into commodity transactions on exchanges where the exchanges act as the counterparty to each trade. Transactions on the exchanges
must  adhere  to  comprehensive  collateral  and  margining  requirements.  This  collateral  may  be  posted  in  the  form  of  cash  or  credit  support  with  thresholds
contingent upon Generation’s credit rating from each of the major credit rating agencies. The collateral and credit support requirements vary by contract and by
counterparty. These credit-risk related contingent features stipulate that if Generation were to be downgraded or lose its investment grade credit rating (based on
its senior unsecured debt rating), it would be required to provide additional collateral. This incremental collateral requirement allows for the offsetting of derivative
instruments that are assets with the same counterparty, where the contractual right of offset exists under applicable master netting agreements. In the absence
of expressly agreed-to provisions that specify the collateral that must be provided, collateral requested will be a function of the facts and circumstances of the
situation at the time of the demand. In this case, Generation believes an amount of several months of future payments (i.e., capacity payments) rather than a
calculation of fair value is the best estimate for the contingent collateral obligation, which has been factored into the disclosure below.

The aggregate fair value of all derivative instruments with credit-risk related contingent features in a liability position that are not fully collateralized (excluding
transactions on the exchanges that are fully collateralized) is detailed in the table below:

Credit-Risk Related Contingent Feature

Gross fair value of derivative contracts containing this feature (a)

Offsetting fair value of in-the-money contracts under master netting arrangements (b)

Net fair value of derivative contracts containing this feature (c)

For the Years Ended December 31,

2018

2017

$

$

(1,723)   $

1,105  

(618)   $

(926)

577

(349)

__________
(a) Amount  represents  the  gross  fair  value  of  out-of-the-money  derivative  contracts  containing  credit-risk-related  contingent  features  ignoring  the  effects  of  master  netting

agreements.

(b) Amount represents the offsetting fair value of in-the-money derivative contracts under legally enforceable master netting agreements with the same counterparty, which

reduces the amount of any liability for which a Registrant could potentially be required to post collateral.

(c) Amount represents the net fair value of out-of-the-money derivative contracts containing credit-risk related contingent features after considering the mitigating effects of
offsetting positions under master netting arrangements and reflects the actual net liability upon which any potential contingent collateral obligations would be based.

Generation had cash collateral posted of $418 million and letters of credit posted of $367 million , and cash collateral held of $47 million and letters of credit held
of $44 million as of December 31, 2018 for external counterparties with derivative positions. Generation had cash collateral posted of $497 million and letters of
credit posted of $293 million and cash collateral held of $35 million and letters of credit held of $33 million at December 31, 2017 for external counterparties with
derivative positions. In the event of a credit downgrade below investment grade (i.e., to BB+ by S&P or Ba1 by Moody's), Generation would have been required
to post additional collateral of $2.1 billion and $1.8 billion as of December 31, 2018 and 2017 , respectively. These amounts represent the potential additional
collateral required after giving consideration to offsetting derivative and non-derivative positions under master netting agreements.

Generation’s and Exelon’s interest rate swaps contain provisions that, in the event of a merger, if Generation’s debt ratings were to materially weaken, it would
be in violation of these provisions, resulting in the ability of the counterparty to terminate the agreement prior to maturity. Collateralization would not be required
under any circumstance. Termination of the agreement could result in a settlement payment by Exelon or the counterparty on any interest rate swap in a net
liability  position.  The  settlement  amount  would  be  equal  to  the  fair  value  of  the  swap  on  the  termination  date.  As  of  December  31,  2018  , Generation’s and
Exelon's swaps were in an asset position with a fair value of $7 million and $3 million , respectively.

See Note 24 — Segment Information for additional information regarding the letters of credit supporting the cash collateral.

Generation  entered  into  supply  forward  contracts  with  certain  utilities,  including  PECO  and  BGE,  with  one-sided  collateral  postings  only  from  Generation.  If
market prices fall below the benchmark price levels in these contracts, the utilities are not required to post collateral. However, when market prices rise above
the benchmark price levels,

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

counterparty  suppliers,  including  Generation,  are  required  to  post  collateral  once  certain  unsecured  credit  limits  are  exceeded.  Under  the  terms  of  ComEd’s
standard  block  energy  contracts,  collateral  postings  are  one-sided  from  suppliers,  including  Generation,  should  exposures  between  market  prices  and
benchmark  prices  exceed  established  unsecured  credit  limits  outlined  in  the  contracts.  As  of  December 31, 2018 ,  ComEd  held  approximately  $38 million in
collateral from suppliers in association with energy procurement contracts. Under the terms of ComEd's ZEC contracts, collateral postings are required to cover
a percentage of the ZEC contract value. ComEd’s REC contracts require collateral postings that are either a fixed price per REC or a percentage of the REC
contract value. As of December 31, 2018 , ComEd held approximately $31 million in collateral from suppliers for REC and ZEC contract obligations. Under the
terms of ComEd’s long-term renewable energy contracts, collateral postings are required from suppliers for both RECs and energy. The REC portion is a fixed
value  and  the  energy  portion  is  one-sided  from  suppliers  should  the  forward  market  prices  exceed  contract  prices.  As  of  December  31,  2018  , ComEd held
approximately  $19  million  in  collateral  from  suppliers  for  the  long-term  renewable  energy  contracts.  If  ComEd  lost  its  investment  grade  credit  rating  as  of
December  31,  2018  ,  it  would  have  been  required  to  post  approximately  $7  million  of  collateral  to  its  counterparties.  See  Note  4 — Regulatory  Matters  for
additional information.

PECO’s natural gas procurement contracts contain provisions that could require PECO to post collateral. This collateral may be posted in the form of cash or
credit support with thresholds contingent upon PECO’s credit rating from the major credit rating agencies. The collateral and credit support requirements vary by
contract and by counterparty. As of December 31, 2018 , PECO was not required to post collateral for any of these agreements.  If PECO lost its investment
grade credit rating as of December 31, 2018 , PECO could have been required to post approximately $39 million of collateral to its counterparties.

PECO’s supplier master agreements that govern the terms of its DSP Program contracts do not contain provisions that would require PECO to post collateral.

BGE’s natural gas procurement contracts contain provisions that could require BGE to post collateral. This collateral may be posted in the form of cash or credit
support  with  thresholds  contingent  upon  BGE’s  credit  rating  from  the  major  credit  rating  agencies.  The  collateral  and  credit  support  requirements  vary  by
contract and by counterparty. As of December 31, 2018 , BGE was not required to post collateral for any of these agreements. If BGE lost its investment grade
credit rating as of December 31, 2018 , BGE could have been required to post approximately $69 million of collateral to its counterparties.

DPL's  natural  gas  procurement  contracts  contain  provisions  that  could  require  DPL  to  post  collateral.  To  the  extent  that  the  fair  value  of  the  natural  gas
derivative transaction in a net loss position exceeds the unsecured credit threshold, then collateral is required to be posted in an amount equal to the amount by
which the unsecured credit threshold is exceeded. The DPL obligations are standalone, without the guaranty of PHI. If DPL lost its investment grade credit rating
as of December 31, 2018 , DPL could have been required to post an additional amount of approximately $11 million of collateral to its natural gas counterparties.

BGE's,  Pepco's,  DPL's  and  ACE’s  full  requirements  wholesale  power  agreements  that  govern  the  terms  of  its  electric  supply  procurement  contracts  do  not
contain provisions that would require BGE, Pepco, DPL or ACE to post collateral.

13. Debt and Credit Agreements (All Registrants)

Short-Term Borrowings

Exelon  Corporate,  ComEd,  BGE,  Pepco,  DPL  and  ACE  meet  their  short-term  liquidity  requirements  primarily  through  the  issuance  of  commercial  paper.
Generation  and  PECO  meet  their  short-term  liquidity  requirements  primarily  through  the  issuance  of  commercial  paper  and  borrowings  from  the  Exelon
intercompany  money  pool.  PHI  Corporate  meets  its  short-term  liquidity  requirements  primarily  through  the  issuance  of  short-term  notes  and  the  Exelon
intercompany  money  pool.  The  Registrants  may  use  their  respective  credit  facilities  for  general  corporate  purposes,  including  meeting  short-term  funding
requirements and the issuance of letters of credit.

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Commercial Paper

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  following  table  reflects  the  Registrants'  commercial  paper  programs  supported  by  the  revolving  credit  agreements  and  bilateral  credit  agreements  at
December 31, 2018 and 2017 :

Commercial Paper Issuer
Exelon Corporate

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

Total

Maximum
Program Size at
December 31,

Outstanding
Commercial
Paper at
December 31,

Average Interest Rate on
Commercial Paper Borrowings for
the Year Ended December 31,

2018 (a)(b)(c)

2017 (a)(b)(c)

2018

2017

2018

2017

$

600   $

600   $

—   $

5,300  

1,000  

600  

600  

300  

300  

300  

5,300  

1,000  

600  

600  

500  

500  

350  

—  

—  

—  

35  

40  

—  

14  

$

9,000

$

9,450

$

89

$

—  

—  

—  

—  

77  

26  

216  

108  

427    

1.93%  

1.96%  

2.14%  

2.24%  

2.18%  

2.24%  

2.07%  

2.21%  

1.16%

1.23%

1.24%

1.13%

1.28%

1.06%

1.48%

1.43%

__________
(a) Excludes $545 million and $480 million in bilateral credit facilities at December 31, 2018 and 2017 , respectively, and $159 million and $179 million in credit facilities for

project finance at December 31, 2018 and 2017 , respectively. These credit facilities do not back Generation's commercial paper program.

(b) At December 31, 2018, excludes $135 million of credit facility agreements arranged at minority and community banks at Generation, ComEd, PECO, BGE, Pepco, DPL
and ACE with aggregate commitments of $49 million , $33 million , $34 million , $5 million , $5 million , $5 million and $5 million , respectively. These facilities expire on
October  11,  2019.  These  facilities  are  solely  utilized  to  issue  letters  of  credit.  At  December  31,  2017,  excludes  $128  million  of  credit  facility  agreements  arranged  at
minority  and  community  banks  at  Generation,  ComEd,  PECO,  BGE,  Pepco,  DPL  and  ACE  with  aggregate  commitments  of  $49 million , $34 million , $34 million , $5
million , $2 million , $2 million , and $2 million , respectively.

(c) Pepco, DPL and ACE's revolving credit facility is subject to available borrowing capacity. The borrowing capacity may be increased or decreased during the term of the
facility, except that (i) the sum of the borrowing capacity must equal the total amount of the facility, and (ii) the aggregate amount of credit used at any given time by each
of Pepco, DPL or ACE may not exceed $900 million or the maximum amount of short-term debt the company is permitted to have outstanding by its regulatory authorities.
The total number of the borrowing reallocations may not exceed eight per year during the term of the facility.

In order to maintain their respective commercial paper programs in the amounts indicated above, each Registrant must have credit facilities in place, at least
equal  to  the  amount  of  its  commercial  paper  program.  While  the  amount  of  outstanding  commercial  paper  does  not  reduce  available  capacity  under  a
Registrant’s credit facility, a Registrant does not issue commercial paper in an aggregate amount exceeding the then available capacity under its credit facility.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

At December 31, 2018 , the Registrants had the following aggregate bank commitments, credit facility borrowings and available capacity under their respective
credit facilities:

Available Capacity at December 31, 2018

Facility Type

Aggregate Bank 
Commitment (a)

Facility Draws

Outstanding
Letters of Credit

Actual

Syndicated Revolver

  $

600   $

—   $

Syndicated Revolver

Bilaterals

Project Finance

Syndicated Revolver

Syndicated Revolver

Syndicated Revolver

Syndicated Revolver

Syndicated Revolver

Syndicated Revolver

5,300  

545  

159  

1,000  

600  

600  

300  

300  

300  

—  

—  

—  

—  

—  

—  

—  

—  

—  

9   $

591   $

1,203  

4,097  

353  

119  

2  

—  

1  

8  

1  

—  

192  

40  

998  

600  

599  

292  

299  

300  

To Support
Additional
Commercial 
Paper (b)

591

4,097

—

—

998

600

564

252

299

286

  $

9,704   $

—   $

1,696   $

8,008   $

7,687

Borrower
Exelon Corporate

Generation

Generation

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

Total

__________
(a) Excludes $135 million of credit facility agreements arranged at minority and community banks at Generation, ComEd, PECO, BGE, Pepco, DPL and ACE with aggregate
commitments of $49 million , $33 million , $34 million , $5 million , $5 million , $5 million and $5 million , respectively. These facilities expire on October 11, 2019. These
facilities are solely utilized to issue letters of credit. As of December 31, 2018 , letters of credit issued under these facilities totaled $5 million and $2 million for Generation
and BGE, respectively.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables present the short-term borrowings activity for Exelon, Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE during 2018 , 2017 and
2016 .

Exelon

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, at December 31

Generation

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, at December 31

ComEd

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, at December 31

PECO

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, at December 31

BGE

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, computed at December 31

2018

2017

2016

$

531

  $

823

    $

1,237

2.21%  

2.15%  

2,147

1.32%    

1.24%    

2018

2017

2016

$

37

  $

405

    $

583

1.96%  

1.96%  

1,455

1.23%    

1.23%    

1,125

3,076

0.88%

1.12%

536

1,735

0.94%

1.14%

$

$

$

2018

2017

2016

  $

154

520

2.14%  

2.14%  

    $

200

470

1.24%    

1.24%    

2018

2017

2016

68

  $

350

2.24%  

2.24%  

    $

2

60

1.13%    

1.13%    

2018

2017

2016

65

  $

54

    $

239

2.18%  

2.18%  

165

1.28%    

1.28%    

256

755

0.77%

N/A

—

—

N/A

N/A

143

369

0.77%

0.95%

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PHI Corporate

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, computed at December 31

Pepco

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, computed at December 31

DPL

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, computed at December 31

ACE

Average borrowings

Maximum borrowings outstanding

Average interest rates, computed on a daily basis

Average interest rates, computed at December 31

Short-Term Loan Agreements

2018

2017

2016

N/A  

N/A  

N/A  

N/A  

N/A     $

N/A    

N/A    

N/A    

$

$

$

2018

2017

2016

  $

22

90

2.24%  

2.24%  

51

    $

197

1.06%    

1.06%    

2018

2017

2016

87

  $

40

    $

245

2.07%  

2.07%  

216

1.48%    

1.48%    

2018

2017

2016

95

  $

30

    $

210

2.21%  

2.21%  

133

1.43%    

1.43%    

153

559

1.03%

N/A

4

73

0.71%

0.90%

33

116

0.68%

N/A

—

5

0.65%

N/A

On January 13, 2016, PHI entered into a $500 million term loan agreement, which was amended on March 28, 2016. The net proceeds of the loan were used to
repay  PHI's  outstanding  commercial  paper,  and  for  general  corporate  purposes.  Pursuant  to  the  loan  agreement,  as  amended,  loans  made  thereunder  bear
interest at a variable rate equal to LIBOR plus 1% , and all indebtedness thereunder is unsecured. On March 23, 2017, the aggregate principal amount of all
loans,  together  with  any  accrued  but  unpaid  interest  due  under  the  loan  agreement  was  fully  repaid  and  the  loan  terminated.    On  March  23,  2017,  Exelon
Corporate entered into a similar type term loan for $500 million which expired on March 22, 2018.  The loan agreement was renewed on March 22, 2018 and will
expire on March 21, 2019. Pursuant to the loan agreement, loans made thereunder bear interest at a variable rate equal to LIBOR plus 1% and all indebtedness
thereunder is unsecured. The loan agreement is reflected in Exelon's Consolidated Balance Sheet within Short-Term borrowings.

On May 23, 2018, ACE entered into two term loan agreements in the aggregate amount of $ 125 million , which expire on May 22, 2019. Pursuant to the term
loan agreements, loans made thereunder bear interest at a variable rate equal to LIBOR plus 0.55% and all indebtedness thereunder is unsecured.

Credit Agreements

On January 5, 2016, Generation entered into a credit agreement establishing a $150 million bilateral credit facility. On January 4, 2019, the credit agreement
was amended to extend its maturity from January 2019 to April 2021.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

This facility will solely be utilized by Generation to issue lines of credit. This facility does not back Generation's commercial paper program.

On  April  1,  2016,  the  credit  agreement  for  CENG's  $100  million  bilateral  credit  facility  was  amended  to  increase  the  overall  facility  size  to  $200  million  ,
scheduled to mature in October of 2019. This facility is utilized by CENG to fund working capital and capital projects. The facility does not back Generation's
commercial paper program.

On  May  26,  2016,  Exelon  Corporate,  Generation,  ComEd,  PECO  and  BGE  entered  into  amendments  to  each  of  their  respective  syndicated  revolving  credit
facilities, which extended the maturity of each of the facilities to May 26, 2021. Exelon Corporate also increased the size of its facility from $500 million to $600
million . On May 26, 2016, PHI, Pepco, DPL and ACE entered into an amendment to their Second Amended and Restated Credit Agreement dated as of August
1,  2011,  which  (i) extended  the  maturity  date  of  the  facility  to  May  26,  2021,  (ii)  removed  PHI as  a  borrower  under  the  facility,  (iii) decreased  the  size of  the
facility from $1.5 billion to $900 million and  (iv) aligned  its financial  covenant  from debt  to capitalization  leverage  ratio to interest  coverage  ratio.  On  May 26,
2018, each of the Registrants' respective syndicated revolving credit facilities had their maturity dates extended to May 26, 2023.

On  January  9,  2017,  the  credit  agreement  for  Generation's  $75 million bilateral  credit  facility  was  amended  and  restated  to  increase  the  facility  size  to  $100
million . On January 4, 2019, the credit agreement was amended to extend its maturity from January 2019 to March 2021. This facility will solely be used by
Generation to issue letters of credit.

On March 15, 2018, the credit agreement for a Generation bilateral credit facility of $30 million was amended to increase the overall facility size to $95 million ,
scheduled to mature in March of 2020. This facility will solely be used by Generation to issue letters of credit.

Borrowings under Exelon Corporate’s, Generation’s, ComEd’s, PECO’s, BGE's, Pepco's, DPL's and ACE's revolving credit agreements bear interest at a rate
based  upon  either  the  prime  rate  or  a  LIBOR-based  rate,  plus  an  adder  based  upon  the  particular  Registrant’s  credit  rating.  The  adders  for  the  prime  based
borrowings and LIBOR-based borrowings are presented in the following table:

Prime based borrowings

LIBOR-based borrowings

27.5  

127.5  

27.5  

127.5  

7.5  

107.5  

—  

90.0  

—  

100.0  

7.5  

107.5  

7.5  

107.5  

7.5

107.5

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

The maximum adders for prime rate borrowings and LIBOR-based rate borrowings are 90 basis points and 165 basis points, respectively. The credit agreements
also  require  the  borrower  to  pay  a  facility  fee  based  upon  the  aggregate  commitments.  The  fee  varies  depending  upon  the  respective  credit  ratings  of  the
borrower.

Each  revolving  credit  agreement  for  Exelon,  Generation,  ComEd,  PECO,  BGE,  Pepco,  DPL  and  ACE  requires  the  affected  borrower  to  maintain  a  minimum
cash from operations to interest expense ratio for the twelve-month period ended on the last day of any quarter. The following table summarizes the minimum
thresholds reflected in the credit agreements for the year ended December 31, 2018 :

Credit agreement threshold

2.50 to 1  

3.00 to 1  

2.00 to 1  

Exelon

Generation

ComEd

PECO
2.00 to 1  

BGE
2.00 to 1  

Pepco
2.00 to 1  

DPL
2.00 to 1  

ACE

2.00 to 1

At December 31, 2018 , the interest coverage ratios at the Registrants were as follows:

Interest coverage ratio

Exelon

7.34

Generation

10.99

ComEd

7.34

PECO

8.14

BGE

9.77

Pepco

5.98

DPL

7.03

ACE

5.06

An  event  of  default  under  Exelon,  Generation,  ComEd,  PECO  or  BGE's  indebtedness  will  not  constitute  an  event  of  default  under  any  of  the  others’  credit
facilities, except that a bankruptcy or other event of default in the payment of principal, premium or indebtedness in principal amount in excess of $100 million in
the aggregate by Generation

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

will constitute an event of default under the Exelon Corporate credit facility. An event of default under Pepco, DPL or ACE's indebtedness will not constitute an
event of default with respect to the other PHI Utilities under the PHI Utilities' combined credit facility.

The absence of a material adverse change in Exelon's or PHI’s business, property, results of operations or financial condition is not a condition to the availability
of credit under any of the borrowers' credit agreement. None of the credit agreements include any rating triggers.

Variable Rate Demand Bonds

DPL has outstanding obligations in respect of Variable Rate Demand Bonds (VRDB). VRDBs are subject to repayment on the demand of the holders and, for
this reason, are accounted for as short-term debt in accordance with GAAP. However, bonds submitted for purchase are remarketed by a remarketing agent on
a  best  efforts  basis.  PHI  expects  that  any  bonds  submitted  for  purchase  will  be  remarketed  successfully  due  to  the  creditworthiness  of  the  issuer  and,  as
applicable, the credit support, and because the remarketing resets the interest rate to the then-current market rate. The bonds may be converted to a fixed-rate,
fixed-term option to establish a maturity which corresponds to the date of final maturity of the bonds. On this basis, PHI views VRDBs as a source of long-term
financing. As of both December 31, 2018 and December 31, 2017 , $79 million in variable rate demand bonds issued by DPL were outstanding and are included
in the Long-term debt due within one year in Exelon's, PHI's and DPL's Consolidated Balance Sheet.

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Table of Contents

Long-Term Debt 

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables present the outstanding long-term debt at the Registrants as of December 31, 2018 and 2017 :

Exelon

Long-term debt

First mortgage bonds (a)

Senior unsecured notes

Unsecured notes

Pollution control notes

Nuclear fuel procurement contracts

Notes payable and other (b)(c)

Junior subordinated notes

Long-term software licensing agreement

Unsecured Tax-Exempt Bonds

Medium-Terms Notes (unsecured)

Transition bonds

Loan Agreement

Nonrecourse debt:

     Fixed rates

     Variable rates (f)

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Fair value adjustment

Long-term debt due within one year (e)

Long-term debt

Long-term debt to financing trusts (d)

Subordinated debentures to ComEd Financing III

Rates

1.70% -

2.45% -

2.40% -

2.50% -

2.85% -

1.74% -

7.61% -

2.29% -

Subordinated debentures to PECO Trust III

7.38% -

Subordinated debentures to PECO Trust IV

Total long-term debt to financing trusts

Unamortized debt issuance costs

Long-term debt to financing trusts

7.90%  

7.60%  

6.35%  

2.70%  

3.15%  

8.88%  

3.50%  

3.95%  

5.40% —

7.72%  

5.55%  

2.00%  

6.00%  

5.81%  

6.35%  

7.50%  

5.75%  

Maturity
Date

December 31,

2018

2017

2019 - 2048  

2019 - 2046  

2021 - 2048  

2025 - 2036  

2020  

2019 - 2053  

2022  

2024  

2024 - 2031  

2019 - 2027  

2023  

2023  

2031 - 2037  

2019 - 2024  

16,496  

11,285  

2,900  

435  

39  

188  

15,197

11,285

2,600

435

82

405

1,150  

1,150

73  

112  

22  

59  

50  

1,253  

849  

34,911  

(66)  

(216)  

795  

(1,349)  

79

112

26

90

—

1,331

865

33,657

(57)

(201)

865

(2,088)

32,176

206

81

103

390

(1)

389

  $

34,075   $

2033   $

206   $

2028  

2033  

81  

103  

390  

—  

  $

390   $

__________
(a) Substantially all of ComEd’s assets other than expressly excepted property and substantially all of PECO’s, Pepco's, DPL's and ACE's assets are subject to the liens of

(b)

their respective mortgage indentures.
Includes capital lease obligations of $36 million and $53 million at December 31, 2018 and 2017 , respectively. Lease payments of $21 million , $5 million , $1 million , $1
million , less than $1 million, and $8 million will be made in 2019 , 2020 , 2021 , 2022 , 2023 , and thereafter, respectively.
Includes financing related to Albany Green Energy, LLC (AGE). During the third quarter of 2017, Generation retired $228 million of its outstanding debt balance.

(c)
(d) Amounts owed to these financing trusts are recorded as Long-term debt to financing trusts within Exelon’s Consolidated Balance Sheets.
(e)
(f) Excludes interest on CEU Upstream nonrecourse debt, see discussion below.

In January 2019, $300 million of ComEd long-term debt due within one year was paid in full.

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Table of Contents

Generation

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Long-term debt

Senior unsecured notes

Pollution control notes

Nuclear fuel procurement contracts

Notes payable and other (a)(b)

Nonrecourse debt:

Fixed rates

Variable rates (c)

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Fair value adjustment

Long-term debt due within one year

Long-term debt

Rates

Maturity
Date

December 31,

2018

2017

2.95% -

2.50% -

2.85% -

2.29% -

7.60%  

2.70%  

3.15%  

7.83%  

6.00%  

5.81%  

2019 - 2042   $

6,019   $

6,019

2025 - 2036  

2020  

2019 - 2024  

2031 - 2037  

2019 - 2024  

435  

39  

164  

1,253  

849  

8,759  

(6)  

(51)  

91  

(906)  

435

82

223

1,331

865

8,955

(8)

(60)

103

(346)

  $

7,887   $

8,644

__________
(a)

Includes Generation’s capital lease obligations of $14 million and $18 million at December 31, 2018 and 2017 , respectively. Generation will make lease payments of $7
million , $5 million , $1 million , and $1 million in 2019 , 2020 , 2021 , and 2022 , respectively. Lease payments of less than $1 million annually will be made from 2023
through expiration of the final capital lease in 2024.
Includes financing related to Albany Green Energy, LLC (AGE). During the third quarter of 2017, Generation retired $228 million of its outstanding debt balance.

(b)
(c) Excludes interest on CEU Upstream nonrecourse debt, see discussion below.

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ComEd

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Long-term debt

First mortgage bonds (a)

Notes payable and other (b)

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Long-term debt due within one year (d)

Long-term debt

Long-term debt to financing trust (c)

Subordinated debentures to ComEd Financing III

Total long-term debt to financing trusts

Unamortized debt issuance costs

Long-term debt to financing trusts

Rates

2.15% -

6.45%  

7.49%  

Maturity
Date

December 31,

2018

2017

2019 - 2048   $

8,179   $

2053  

8  

8,187  

(23)  

(63)  

(300)  

  $

7,801   $

7,529

147

7,676

(23)

(52)

(840)

6,761

206

206

(1)

205

6.35%  

2033   $

206   $

206  

(1)  

  $

205   $

__________
(a) Substantially all of ComEd’s assets, other than expressly excepted property, are subject to the lien of its mortgage indenture.
(b)

Includes ComEd’s capital lease obligations of $8 million at both December 31, 2018 and 2017 , respectively. Lease payments of less than $1 million annually will be made
from 2019 through expiration at 2053.

(c) Amount owed to this financing trust is recorded as Long-term debt to financing trust within ComEd’s Consolidated Balance Sheets.
(d)

In January 2019, the $300 million balance was paid in full.

PECO

Long-term debt

First mortgage bonds (a)

Loan Agreement

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Long-term debt due within one year

Long-term debt

Long-term debt to financing trusts (b)

Subordinated debentures to PECO Trust III

Subordinated debentures to PECO Trust IV

Long-term debt to financing trusts

Rates

Maturity
Date

December 31,

2018

2017

1.70% -

5.95%  

2021 - 2048   $

3,075   $

2,925

2.00%   2023

7.38% -

7.50%  

5.75%  

50  

3,125  

(18)  

(23)  

—  

  $

3,084   $

2028   $

2033  

  $

81   $

103  

184   $

0

2,925

(5)

(17)

(500)

2,403

81

103

184

__________
(a) Substantially all of PECO’s assets are subject to the lien of its mortgage indenture.
(b) Amounts owed to this financing trust are recorded as Long-term debt to financing trusts within PECO’s Consolidated Balance Sheets.

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Table of Contents

BGE

Long-term debt

Unsecured notes

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Long-term debt

PHI

Long-term debt

First mortgage bonds (a)

Senior unsecured notes

Unsecured Tax-Exempt Bonds

Medium-terms notes (unsecured)

Transition bonds (b)

Notes payable and other  (c)  

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Fair value adjustment

Long-term debt due within one year

Long-term debt

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Rates

Maturity
Date

December 31,

2018

2017

2.40% -

6.35%  

2021 - 2048  

2,900  

2,900  

(6)  

(18)  

2,600

2,600

(6)

(17)

  $

2,876   $

2,577

Rates

Maturity 
Date

December 31,

2018

2017

1.81% -

1.74% -

7.61% -

7.28% -

7.90%  

7.45%  

5.40%  

7.72%  

5.55%  

8.88%  

2021 - 2048   $

5,242   $

4,743

2032  

2024 - 2031  

2019 - 2027  

2023  

2019 - 2022  

185  

112  

22  

59  

16  

185

112

26

90

33

5,636

5,189

4  

(14)  

633  

(125)  

5

(6)

686

(396)

  $

6,134

$

5,478

__________
(a) Substantially all of Pepco's, DPL's, and ACE's assets are subject to the lien of its respective mortgage indenture.
(b) Transition bonds are recorded as part of Long-term debt within ACE's Consolidated Balance Sheets.
(c)

Includes Pepco's capital lease obligations of $14 million and $27 million at December 31, 2018 and 2017 , respectively.

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Pepco

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Long-term debt

First mortgage bonds (a)

Notes payable and other (b)

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Long-term debt due within one year

Long-term debt

Rates

Maturity 
Date

December 31,

2018

2017

3.05% -

7.28% -

7.90%  

8.88%  

2022 - 2048   $

2,735   $

2,535

2019 - 2022  

16  

2,751

2  

(34)  

(15)  

35

2,570

2

(32)

(19)

  $

2,704

$

2,521

__________
(a) Substantially all of Pepco's assets are subject to the lien of its respective mortgage indenture.
(b)

Includes capital lease obligations of $14 million and $27 million at December 31, 2018 and 2017 , respectively. Lease payments of $14 million will be made in 2019 .

DPL

Long-term debt

First mortgage bonds (a) 

Unsecured Tax-Exempt Bonds

Medium-terms notes (unsecured)

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Long-term debt due within one year

Long-term debt

Rates

Maturity 
Date

December 31,

2018

2017

1.81% -

1.74% -

7.61% -

4.27%  

5.40%  

7.72%  

2023 - 2048   $

1,370   $

1,171

2024 - 2031  

2019 - 2027  

112  

22  

1,504

2  

(12)  

(91)  

112

26

1,309

2

(11)

(83)

  $

1,403

$

1,217

__________
(a) Substantially all of DPL's assets are subject to the lien of its respective mortgage indenture.

ACE

Long-term debt

First mortgage bonds (a) 

Transition bonds (b)

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Long-term debt due within one year

Long-term debt

Rates

3.38% -

6.80%  

5.55%  

Maturity 
Date

December 31,

2018

2017

2021 - 2036   $

1,137   $

1,037

2023  

59  

1,196

(1)  

(7)  

(18)  

  $

1,170

$

90

1,127

(1)

(5)

(281)

840

__________
(a) Substantially all of ACE's assets are subject to the lien of its respective mortgage indenture.
(b) Maturities of ACE's Transition Bonds outstanding at December 31, 2018 are $18 million in 2019, $20 million in 2020 and $21 million in 2021.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Long-term  debt  maturities  at  Exelon,  Generation,  ComEd,  PECO,  BGE,  PHI,  Pepco,  DPL  and  ACE  in  the  periods  2019 through 2023 and  thereafter  are  as
follows:

Year
2019

2020

2021

2022

2023

3,528  

1,511  

3,084  

850  

Thereafter

Total

$

24,979 (a)   
35,301  

$

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

$

1,349  

$

906   $

2,108  

1  

1,024  

—  

4,720  

8,759   $

$

300  

500  

350  

—  

—  

—  

—  

300  

350  

50  

7,243 (b)  
8,393  

$

2,609 (c)  
3,309

$

—   $

125   $

15   $

91   $

—  

300  

250  

300  

20  

261  

310  

500  

—  

1  

310  

—  

2,050  

4,420  

2,425  

—  

—  

—  

500  

913  

18

20

260

—

—

898

$

2,900

$

5,636

$

2,751

$

1,504

$

1,196

__________
(a)
(b)
(c)

Includes $390 million due to ComEd and PECO financing trusts.
Includes $206 million due to ComEd financing trust.
Includes $184 million due to PECO financing trusts.

Junior Subordinated Notes

In June 2014, Exelon issued $1.15 billion of junior subordinated notes in the form of 23 million equity units at a stated amount of $50.00 per unit. Each equity unit
represented an undivided beneficial ownership interest in Exelon’s $1.15 billion of 2.50% junior subordinated notes due in 2024 (“2024 notes”) and a forward
equity purchase contract.   As contemplated in the June 2014 equity unit structure, in April 2017, Exelon completed the remarketing of the 2024 notes into $1.15
billion of 3.497% junior subordinated notes due in 2022 (“Remarketing”).  Exelon conducted the Remarketing on behalf of the holders of equity units and did not
directly  receive  any  proceeds  therefrom.  Instead,  the  former  holders  of  the  2024  notes  used  debt  remarketing  proceeds  towards  settling  the  forward  equity
purchase contract with Exelon on June 1, 2017. Exelon issued approximately 33 million shares of common stock from treasury stock and received $1.15 billion
upon settlement of the forward equity purchase contract. When reissuing treasury stock Exelon uses the average price paid to repurchase shares to calculate a
gain  or  loss  on  issuance  and  records  gains  or  losses  directly  to  retained  earnings.  A  loss  on  reissuance  of  treasury  shares  of  $1.05 billion was recorded to
retained earnings as of December 31, 2017. See Note 20 — Earnings Per Share for additional information on the issuance of common stock.

Nonrecourse Debt 

Exelon  and  Generation  have  issued  nonrecourse  debt  financing,  in  which  approximately  $2.9 billion of  generating  assets  have  been  pledged  as  collateral  at
December 31, 2018 . Borrowings under these agreements are secured by the assets and equity of each respective project. The lenders do not have recourse
against  Exelon  or  Generation  in  the  event  of  a  default.  If  a  specific  project  financing  entity  does  not  maintain  compliance  with  its  specific  nonrecourse  debt
financing covenants, there could be a requirement to accelerate repayment of the associated debt or other borrowings earlier than the stated maturity dates. In
these instances, if such repayment was not satisfied, the lenders or security holders would generally have rights to foreclose against the project-specific assets
and related collateral. The potential requirement to satisfy its associated debt or other borrowings earlier than otherwise anticipated could lead to impairments
due to a higher likelihood of disposing of the respective project-specific assets significantly before the end of their useful lives.

Denver Airport. In June 2011, Generation entered into a 20-year, $7 million solar loan agreement to finance a solar construction project in Denver, Colorado.
The agreement is scheduled to mature on June 30, 2031. The agreement bears interest at a fixed rate of 5.50% annually with interest payable annually. As of
December 31, 2018 , $ 6 million was outstanding.

CEU Upstream. In  July  2011,  CEU  Holdings,  LLC,  a  wholly  owned  subsidiary  of  Generation,  entered  into  a  5-year  reserve  based  lending  agreement  (RBL)
associated with certain Upstream oil and gas properties. The lenders do not have recourse against Exelon or Generation in the event of default pursuant to the
RBL. Borrowings under this arrangement are secured by the assets and equity of CEU Holdings.

In December 2016, substantially all of the Upstream natural gas and oil exploration and production assets were sold for $37 million . The proceeds were used to
reduce the debt balance by $31 million . The remaining proceeds

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

of $6 million were being held in escrow. In addition, during 2016, $15 million of the debt was repaid using CEU Holding’s cash, resulting in an outstanding debt
balance of $22 million at December 31, 2016. During 2017, additional assets were sold for $1 million and the remaining $6 million in escrow was released and
applied to the debt balance resulting in an outstanding amount of $15 million at December 31, 2017. Upon final resolution, CEU Holdings will be released of its
obligations regardless of the amount of asset sale proceeds received. The ultimate resolution of this matter has no direct effect on any Exelon or Generation
credit facilities or other debt of an Exelon entity. At December 31, 2018 , the outstanding debt balance of $15 million was classified within Long term debt due
within one year in Exelon’s and Generation’s Consolidated Balance Sheets. See Note 5 — Mergers, Acquisitions and Dispositions and Note 7 — Impairment of
Long-Lived Assets and Intangibles for additional information.

Holyoke Solar Cooperative. In  October  2011,  Generation  entered  into  a  20-year,  $11 million solar  loan  agreement  related  to  a  solar  construction  project  in
Holyoke,  Massachusetts.  The  agreement  is  scheduled  to  mature  on  December  2031.  The  agreement  bears  interest  at  a  fixed  rate  of  5.25% annually with
interest payable monthly. As of December 31, 2018 , $8 million was outstanding.

Antelope Valley Solar Ranch One.     In December 2011, the DOE Loan Programs Office issued a guarantee for up to $646 million for a nonrecourse loan from
the Federal Financing Bank to support the financing of the construction of the Antelope Valley facility. The project became fully operational in 2014. The loan will
mature  on January  5, 2037.  Interest  rates  on the  loan  were fixed  upon  each  advance  at a spread  of 37.5 basis points  above  U.S. Treasuries  of comparable
maturity.  The  advances  were completed  as of December  31,  2015  and  the  outstanding  loan  balance  will bear  interest  at an  average  blended  interest  rate  of
2.82% .  As  of  December  31,  2018  , $508 million was  outstanding.  In  addition,  Generation  has  issued  letters  of  credit  to  support  its  equity  investment  in  the
project. As of December 31, 2018 , Generation had $38 million in letters of credit outstanding related to the project. In 2017, Generation’s interests in Antelope
Valley were also contributed to and are pledged as collateral for the EGR IV financing structure referenced below.

Continental Wind.     In September 2013, Continental Wind, LLC (Continental Wind), an indirect subsidiary of Exelon and Generation, completed the issuance
and sale of $613 million senior secured notes. Continental Wind owns and operates a portfolio of wind farms in Idaho, Kansas, Michigan, Oregon, New Mexico
and Texas with a total net capacity of 667 MW. The net proceeds were distributed to Generation for its general business purposes. The notes are scheduled to
mature on February 28, 2033. The notes bear interest at a fixed rate of 6.00% with interest payable semi-annually. As of December 31, 2018 , $479 million was
outstanding.

In  addition,  Continental  Wind  entered  into  a  $131  million  letter  of  credit  facility  and  $10  million  working  capital  revolver  facility.  Continental  Wind  has  issued
letters of credit to satisfy certain of its credit support and security obligations. As of December 31, 2018 , the Continental Wind letter of credit facility had $114
million in letters of credit outstanding related to the project.

In 2017, Generation’s interests in Continental Wind were contributed to EGRP. Refer to Note 2 - Variable Interest Entities for additional information on EGRP.

ExGen  Texas  Power.         In  September  2014,  EGTP,  an  indirect  subsidiary  of  Exelon  and  Generation,  issued  $675 million aggregate  principal  amount  of  a
nonrecourse senior secured term loan. The net proceeds were distributed to Generation for general business purposes. The loan was scheduled to mature on
September 18, 2021. In addition to the financing, EGTP entered into various interest rate swaps with an initial notional amount of approximately $505 million at
an interest rate of 2.34% to hedge a portion of the interest rate exposure in connection with this financing, as required by the debt covenants.

On May 2, 2017, as a result of the negative impacts of certain market conditions and the seasonality of its cash flows, EGTP entered into a consent agreement
with  its  lenders,  which  permitted  EGTP  to  draw  on  its  revolving  credit  facility  and  initiate  an  orderly  sales  process  of  its  assets.  On  November  7,  2017,  the
debtors  filed  voluntary  petitions  for  relief  under  Chapter  11  of  Title  11  of  the  United  States  Code  in  the  United  States  Bankruptcy  Court  for  the  District  of
Delaware. As a result, Exelon and Generation deconsolidated the nonrecourse senior secured term loan, the revolving credit facility, and the interest rate swaps
from their consolidated financial statements as of December 31, 2017. Due to their nonrecourse nature, these borrowings are secured solely by the assets of
EGTP and its subsidiaries.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The Chapter 11 bankruptcy proceedings were finalized on April 17, 2018, resulting in the ownership of EGTP assets (other than the Handley Generating Station)
being transferred to EGTP's lenders. See Note 5 — Mergers, Acquisitions and Dispositions for additional information on EGTP.

Renewable Power Generation.     In March 2016, RPG, an indirect subsidiary of Exelon and Generation, issued $150 million aggregate principal amount of a
nonrecourse senior secured notes.  The net proceeds were distributed to Generation for paydown of long term debt obligations at Sacramento PV Energy and
Constellation Solar Horizons and for general business purposes.  The loan is scheduled to mature on March 31, 2035.  The term loan bears interest at a fixed
rate of 4.11% payable semi-annually.  As of December 31, 2018 , $115 million was outstanding.

In 2017, Generation’s interests in Renewable Power Generation were contributed to EGRP. Refer to Note 2 - Variable interest Entities for additional information
on EGRP.

SolGen.     In September 2016, SolGen, LLC (SolGen), an indirect subsidiary of Exelon and Generation, issued  $150 million aggregate principal amount of a
nonrecourse  senior  secured  notes.    The  net  proceeds  were  distributed  to  Generation  for  general  business  purposes.    The  loan  is  scheduled  to  mature  on
September 30, 2036.  The term loan bears interest at a fixed rate of 3.93% payable semi-annually.  As of December 31, 2018 , $137 million was outstanding. In
2017, Generation’s interests in SolGen were also contributed to and are pledged as collateral for the EGR IV financing structure referenced below.

ExGen  Renewables  IV.         In  November  2017,  EGR  IV,  an  indirect  subsidiary  of  Exelon  and  Generation,  entered  into  an  $850  million  nonrecourse senior
secured term loan credit facility agreement. Generation’s interests in EGRP, Antelope Valley, SolGen, and Albany Green Energy were all contributed to and are
pledged as collateral for this financing. The net proceeds of $785 million , after the initial funding of $50 million for debt service and liquidity reserves as well as
deductions for original discount and estimated costs, fees and expenses incurred in connection with the execution and delivery of the credit facility agreement,
were distributed to Generation for general corporate purposes. The $50 million of debt service and liquidity reserves was treated as restricted cash in Exelon’s
and Generation’s Consolidated Balance Sheets and Consolidated Statements of Cash Flows. The loan is scheduled to mature on November 28, 2024. The term
loan bears interest at a variable rate equal to LIBOR + 3% , subject to a 1% LIBOR floor with interest payable quarterly. As of December 31, 2018 , $834 million
was outstanding. In addition to the financing, EGR IV entered into interest rate swaps with an initial notional amount of $636 million at an interest rate of 2.32%
to manage a portion of the interest rate exposure in connection with the financing. See Note 2 - Variable interest Entities for additional information on EGRP.

14. Income Taxes (All Registrants)

Corporate Tax Reform (All Registrants)

On December 22, 2017, President Trump signed the TCJA into law. The TCJA makes many significant changes to the Internal Revenue Code, including, but not
limited  to,  (1)  reducing  the  U.S.  federal  corporate  tax  rate  from  35% to 21% ;  (2)  creating  a  30% limitation  on  deductible  interest  expense  (not  applicable  to
regulated utilities); (3) allowing 100% expensing for the cost of qualified property (not applicable to regulated utilities); (4) eliminating the domestic production
activities deduction; (5) eliminating the corporate alternative minimum tax and changing how existing alternative minimum tax credits can be realized; and (6)
changing rules related to uses and limitations of net operating loss carryforwards created in tax years beginning after December 31, 2017. The most significant
change that impacts the Registrants is the reduction of the corporate federal income tax rate from 35% to 21% beginning January 1, 2018.

Pursuant  to  the  enactment  of  the  TCJA,  the  Registrants  remeasured  their  existing  deferred  income  tax  balances  as  of  December  31,  2017  to  reflect  the
decrease in the corporate income tax rate from 35% to 21% , which resulted in a material decrease to their net deferred income tax liability balances as shown in
the  table  below.  Generation  recorded  a  corresponding  net  decrease  to  income  tax  expense,  while  the  Utility  Registrants  recorded  corresponding  regulatory
liabilities or assets to the extent such amounts are probable of settlement or recovery through customer rates and an adjustment to income tax expense for all
other amounts. The amount and timing of potential settlements of the established net regulatory liabilities are determined by the Utility Registrants’ respective
rate regulators, subject to certain IRS “normalization” rules. See Note 4 — Regulatory Matters for additional information regarding settlements for passing back
of TCJA income tax savings benefits to customers.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  Registrants  assessed  the  applicable  provisions  in  the  TCJA  and  recorded  the  associated  impacts  as  of  December  31,  2017.  The  Registrants  recorded
provisional income tax amounts as of December 31, 2017, as allowed under SAB 118 issued by the SEC in December 2017, for changes pursuant to the TCJA
related to depreciation because the impacts could not be finalized upon issuance of the Registrants’ financial statements, but for which reasonable estimates
could be determined.

On August 3, 2018, the U.S. Department of Treasury, in conjunction with the IRS, released proposed regulations clarifying the immediate expensing provisions
enacted by the TCJA, specifically that regulated utility property acquired after September 27, 2017, and placed in service by December 31, 2017, qualifies for
100% expensing. Until the proposed regulations are finalized, taxpayers may rely on the proposed regulations for tax years ending after September 28, 2017.
The Registrants recorded the impact of these proposed regulations and the adjustment was immaterial.

While the Registrants have recorded the impacts of the TCJA based on their interpretation of the provisions as enacted, it is expected the U.S. Department of
Treasury and the IRS will issue additional interpretative guidance in the future that could result in changes to previously finalized provisions. At this time, many of
the states in which Exelon does business have issued guidance regarding TCJA and the impact was not material.

The  one-time  impacts  recorded  by  the  Registrants  to  remeasure  their  deferred  income  tax  balances  at  the  21%  corporate  federal  income  tax  rate  as  of
December 31, 2017 are presented below:

Exelon (b)

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Successor

Net Decrease to Deferred
Income Tax Liability Balances 

$8,624

$1,895

$2,819

$1,407

$1,120

$1,944

$968

$540

$456

Net Regulatory Liability
Recorded (a)

$7,315

N/A

$2,818

$1,394

$1,124

$1,979

$976

$545

$458

Exelon

Generation

ComEd

PECO (c)

BGE

PHI

Pepco

DPL

ACE

Successor

Exelon (b)

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Successor

Net Deferred Income Tax
Benefit/(Expense) Recorded
__________
(a) Reflects  the  net  regulatory  liabilities  recorded  on  a  pre-tax  basis  before  taking  into  consideration  the  income  tax  benefits  associated  with  the  ultimate  settlement  with

$1,895

$1,309

$(35)

$(8)

$(4)

$(2)

$(5)

$13

$1

customers.

(b) Amounts  do  not  sum  across  due  to  deferred  tax  adjustments  recorded  at  the  Exelon  Corporation  parent  company,  primarily  related  to  certain  employee  compensation

plans.

(c) Given  the  regulatory  treatment  of  income  tax  benefits  related  to  electric  and  gas  distribution  repairs,  PECO  remained  in  an  overall  net  regulatory  asset  position  as  of

December 31, 2017 after recording the impacts related to the TCJA.

The net regulatory liabilities above include (1) amounts subject to IRS “normalization” rules that are required to be passed back to customers generally over the
remaining  useful  life  of  the  underlying  assets  giving  rise  to  the  associated  deferred  income  taxes,  and  (2)  amounts  for  which  the  timing  of  settlement  with
customers is subject to determinations by the rate regulators. The table below sets forth the Registrants’ estimated categorization of their net regulatory liabilities
as of December 31, 2017. The amounts in the table below are shown on an after-tax basis reflecting future net cash outflows after taking into consideration the
income tax benefits associated with the ultimate settlement with customers.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Subject to IRS Normalization Rules

Subject to Rate Regulator Determination

Net Regulatory Liabilities

Exelon

$3,040

1,694

$4,734

ComEd

$1,400

573

$1,973

PECO (a)

$533

43

$576

BGE

$459

324

$783

Successor

PHI

$648

754

$1,402

PEPCO

$299

391

$690

DPL

$195

194

$389

  $

ACE

$153

170

323

_________
(a) Given the regulatory treatment of income tax benefits related to electric and gas distribution repairs, PECO was in an overall net regulatory asset position as of December
31, 2017 after recording the impacts related to the TCJA. As a result, the amount of customer benefits resulting from the TCJA subject to the discretion of PECO's rate
regulators are lower relative to the other Utility Registrants.

The net regulatory liability amounts subject to the IRS normalization rules generally relate to property, plant and equipment with remaining useful lives ranging
from 30 to 40 years across the Utility Registrants.  For the other amounts, rate regulators could require the passing back of amounts to customers over shorter
time frames. See Note 4 - Regulatory Matters for additional information.

Components of Income Tax Expense or Benefit

Income tax expense (benefit) from continuing operations is comprised of the following components:

Included in operations:

Federal

Current

Deferred

Investment tax credit amortization

State

Current

Deferred

Total

Included in operations:

Federal

Current

Deferred

Investment tax credit amortization

State

Current

Deferred

Total

 Exelon

 Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

For the Year Ended December 31, 2018

Successor

$

226   $

337   $

(63)   $

11   $

(5)   $

(4)

  $

28   $

(3)   $

(14)

(98)  

(24)  

(1)  

17  

(347)  

(21)  

6  

(83)  

145  

(2)  

(29)  

117  

10  

—  

1  

(16)  

47  

—  

—  

32  

24  

(1)

7  

9  

(21)  

—  

—  

6  

13  

—  

—  

12  

$

120   $

(108)   $

168   $

6   $

74   $

35   $

13   $

22   $

18

—

—

8

12

 Exelon

 Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

For the Year Ended December 31, 2017 (a)

Successor

$

194   $

584   $

(191)   $

71   $

74   $

(60)   $

(20)   $

(24)   $

(12)

(471)  

(25)  

14  

162  

(2,005)  

(21)  

65  

1  

523  

(2)  

(49)  

136  

28  

—  

14  

(9)  

101  

(1)  

(5)  

49  

250  

(1)  

114  

—  

(4)  

32  

(2)  

13  

82  

—  

—  

13  

$

(126)   $

(1,376)   $

417   $

104   $

218   $

217   $

105   $

71   $

34

—

—

4

26

376

 
 
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
   
 
   
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
Table of Contents

Included in operations:

Federal

Current

Deferred
Investment tax credit
amortization

State

Current

Deferred

Total

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For the Year Ended December 31, 2016 (a)

Successor

Predecessor

March 24, 2016 to
December 31, 2016    

January 1, 2016 to
March 23, 2016

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

$

60   $

513   $

(135)   $

63   $

51   $ (118)   $ (88)   $ (26)   $

(281)     $

600  

(24)  

39  

78  

(254)  

379  

(20)  

(2)  

45  

(2)  

(4)  

63  

72  

—  

9  

5  

88  

136  

97  

22  

(1)  

—  

—  

—  

5  

31  

7  

16  

1  

12  

—  

—  

283    

(1)    

(11)    

13    

$

753   $

282   $

301   $

149   $

174   $

41   $ 22   $

(4)   $

3     $

—

10

—

—

7

17

__________
(a) Exelon retrospectively adopted the new standard Revenue from Contracts with Customers. The standard was adopted as of January 1, 2018. Components of income tax

expense or benefit are recast to reflect the impact of the new standard.

Rate Reconciliation

The effective income tax rate from continuing operations varies from the U.S. federal statutory rate principally due to the following:

U.S. Federal statutory rate

Increase (decrease) due to:

State income taxes, net of Federal income
tax benefit

Qualified NDT fund income

Amortization of investment tax credit,
including deferred taxes on basis difference

Plant basis differences

Production tax credits and other credits

Noncontrolling interests

Excess deferred tax amortization

Tax Cuts and Jobs Act of 2017

Other

Effective income tax rate

For the Year Ended December 31, 2018

Successor

Exelon

Generation

ComEd

PECO

21.0 %

21.0 %

21.0 %

21.0 %

BGE
21.0 %  

PHI

Pepco

21.0 %  

21.0 %  

DPL
21.0 %  

ACE

21.0 %

0.6

(1.9)

(1.2)

(3.5)

(2.2)

(1.0)

(8.3)

0.9

1.0
5.4 %  

(16.6)

(11.8)

(6.5)

—

(13.5)

(6.1)

—

2.7

1.3

(29.5)%  

8.3
—  

(0.2)

(0.2)

—  
—  

(9.1)

(0.1)

0.5
20.2 %  

377

(2.6)

—  

6.6
—  

(0.1)

(14.1)

—  
—  

(0.1)

(1.3)

—  
—  

(3.2)

(8.0)

—  

0.3
1.3 %  

—  

0.9
19.1 %  

3.0
—  

(0.2)

(1.6)

—  
—  

(14.5)

0.1

0.3
8.1 %  

2.2
—  

6.7
—  

(0.1)

(2.7)

—  
—  

(0.3)

(0.3)

—  
—  

7.4

—

(0.4)

(0.5)

—

—

(14.8)

(12.0)

(14.9)

—  

0.2
5.8 %  

—  

0.4
15.5 %  

—

1.2

13.8 %

 
 
   
   
   
   
   
   
   
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
   
   
   
   
   
   
   
   
     
 
   
   
   
   
   
   
   
   
     
 
   
   
   
   
   
   
   
   
   
 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

U.S. Federal statutory rate

Increase (decrease) due to:

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For the Year Ended December 31, 2017 (a)

Successor

Exelon

Generation

ComEd

PECO

35.0 %  

35.0 %  

35.0 %  

35.0 %  

BGE
35.0 %  

PHI

Pepco

35.0 %  

35.0 %  

DPL
35.0 %  

ACE

35.0 %

State income taxes, net of Federal income
tax benefit

Qualified NDT fund income

Amortization of investment tax credit,
including deferred taxes on basis difference

Plant basis differences (b)

Production tax credits and other credits

Like-kind exchange

Merger expenses

FitzPatrick bargain purchase gain

2.3

3.8

(0.9)

(1.7)

(1.8)

(1.2)

(3.6)

(2.2)

2.9

9.9

(2.1)

—  

(4.7)

—  

(1.2)

(5.6)

Tax Cuts and Jobs Act of 2017 (c)

(33.1)

(128.3)

Other

Effective income tax rate

0.1
(3.3)%  

(0.5)
(94.6)%  

0.6
—  

(0.1)

(13.8)

—  
—  
—  
—  

5.4
—  

(0.1)

0.1
—  
—  
—  
—  

(2.3)

0.9

(0.1)
19.3 %  

0.2
41.5 %  

4.8

—

(0.2)

1.1

—

—

(9.5)

—

6.4

3.2
—  

5.4
—  

5.6

—

(0.1)

(0.4)

—  
—  

(0.2)

(0.4)

2.0
—  
—  

3.6

—

—

(6.3)

(7.8)

(19.8)

—  

—  

2.7

2.5

—

1.6

(0.1)
37.5 %  

(0.2)
33.9 %  

0.1
37.0 %  

(0.4)

25.2 %

5.7
—  

(0.2)

0.3
—  

1.3
—  
—  

0.1

0.2
42.4 %  

378

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

U.S. Federal statutory rate

35.0 %  

35.0 %  

35.0 %  

Exelon

Generation

ComEd

PECO
35.0 %  

BGE
35.0 %  

Pepco

DPL (d)

ACE (d)

PHI (d)

PHI

35.0 %  

35.0 %  

35.0 %  

35.0 %    

35.0 %

For the Year Ended December 31, 2016 (a)

Successor

Predecessor

March 24, 2016 to
December 31,
2016

January 1, 2016 to
March 23, 2016

Increase (decrease) due to:

State income taxes,
net of Federal income
tax benefit (e)

Qualified NDT fund
income

Amortization of
investment tax credit,
including deferred
taxes on basis
difference

Plant basis
differences

Production tax credits
and other credits

Noncontrolling
interests

Statute of limitations
expiration

Penalties

Merger Expenses

Other (f)

3.3

3.4

(1.2)

(4.9)

(3.6)

(0.2)

(0.4)

1.9

5.6

3.2

7.9

(2.3)

—

(8.3)

(0.6)

(1.7)

—

1.1

5.6

1.3

5.0

15.7

52.7

6.2

—  

—  

—  

—  

—  

—  

(0.3)

(0.6)

—  

—  

—  

4.5
—  

(0.1)

(9.6)

(0.1)

(2.7)

(0.2)

(22.8)

(3.7)

(25.5)

0.8

10.3

—  

—  

—  
—  
—  

—  

—  

—  
—  
—  
—  

—  

—  

—  
—  

—  

—  

—  
—  

—  

—  

—  
—  

23.5

(1.8)

112.9

(2.2)

(44.9)

1.3

5.8

—

1.4

39.0

—

—

—

(0.7)

(89.0)

3.3
(5.2)%  

11.9

—

(0.9)

(13.5)

—

—

—

—

11.1

3.6

(0.7)
38.2 %  

(1.4)
32.9 %  

0.1
44.3 %  

(1.2)
25.4 %  

Effective income tax rate
__________
(a) Exelon retrospectively adopted the new standard Revenue from Contracts with Customers. The standard was adopted as of January 1, 2018. The effective income tax

37.2 %

49.4 %

169.2 %

47.2 %

8.7 %

(b)

(c)

rates are recast to reflect the impact of the new standard.
Includes the charges related to the transmission-related income tax regulatory asset for Exelon, ComEd, BGE, PHI, Pepco, DPL and ACE of $ 35 million , $ 3 million , $ 5
million , $ 27 million , $ 14 million , $ 6 million and $ 7 million , respectively. See Note 4 - Regulatory Matters for additional information.
Included are impacts for TCJA other than the corporate rate change, including revisions further limiting tax deductions for compensation of certain highest paid executives,
the write-off of foreign tax credit carryforwards, and loss of a 2015 domestic production activities deduction due to an NOL carryback.

(d) DPL and ACE recognized a loss before income taxes for the year ended December 31, 2016, and PHI recognized a loss before income taxes for the period of March 24,

2016, through December 31, 2016. As a result, positive percentages represent an income tax benefit for the periods presented.
Includes a remeasurement of uncertain state income tax positions for Pepco and DPL.

(e)
(f) At  PECO,  includes  a  cumulative  adjustment  related  to  an  anticipated  gas  repairs  tax  return  accounting  method  change.  The  method  change  request  was  filed  and

accepted in 2017. No change to the results recorded as of December 31, 2016.

379

 
 
   
   
   
   
   
   
   
 
   
 
 
   
 
 
 
 
 
 
 
 
 
   
 
   
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
   
Table of Contents

Tax Differences and Carryforwards

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The tax effects of temporary differences and carryforwards, which give rise to significant portions of the deferred tax assets (liabilities), as of December 31, 2018
and 2017 are presented below:

As of December 31, 2018

Successor

Plant basis differences

$

(12,533)

  $

(2,495)

  $

(4,059)

  $

(1,862)

  $

(1,399)

  $

(2,577)

  $

(1,148)

  $

(743)

  $

(645)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Accrual based contracts

Derivatives and other financial
instruments

Deferred pension and
postretirement obligation

Nuclear decommissioning
activities

Deferred debt refinancing costs

Regulatory assets and liabilities

Tax loss carryforward

Tax credit carryforward

Investment in partnerships

Other, net

Deferred income tax liabilities (net)

Unamortized investment tax credits

Total deferred income tax liabilities
(net) and

unamortized investment tax credits

$

$

117  

89  

1,435  

(351)
234  

(749)
237  
811  

(797)
934  

(44)

35  

(188)

(351)

23  
—  
78  
816  

(775)
239  

—  

69  

—  

—  

(255)

(26)

—  

(7)
300  
—  
—  
—  
151  

—  
—  

(129)

18  
—  
—  
67  

—  

—  

(26)

—  

(3)
172  
25  
—  
—  
12  

161  

3  

—  

—  

—  

—  

(102)

(78)

(46)

—  
187  

(90)
96  
—  
—  
196  

—  

(4)
58  
12  
—  
—  
98  

—  

(2)
96  
52  
—  
—  
17  

(10,573)

  $

(2,662)

  $

(3,801)

  $

(1,932)

  $

(1,219)

$

(2,126)

$

(1,062)

$

(626)

$

(724)

(700)

(12)

(1)

(3)

(8)

(2)

(2)

—

—

(14)

—

(1)

83

26

—

—

19

(532)

(3)

(11,297)

  $

(3,362)

  $

(3,813)

  $

(1,933)

  $

(1,222)

$

(2,134)

$

(1,064)

$

(628)

$

(535)

380

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

As of December 31, 2017 (a)

Successor

Plant basis differences

$

(12,490)

  $

(2,819)

  $

(3,825)

  $

(1,762)

  $

(1,368)

  $

(2,521)

  $

(1,152)

  $

(717)

  $

(607)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Accrual based contracts

Derivatives and other financial
instruments

Deferred pension and
postretirement obligation

Nuclear decommissioning activities

Deferred debt refinancing costs

Regulatory assets and liabilities

Tax loss carryforward

Tax credit carryforward

Investment in partnerships

Other, net

Deferred income tax liabilities (net)

Unamortized investment tax credits

Total deferred income tax liabilities (net)
and

unamortized investment tax credits

$

$

150  

(85)

1,463  

(553)
217  

(688)
344  
861  

(434)
746  

(66)

(66)

(205)

(553)

26  
—  
76  
868  

(416)

78  

—  

(2)

(285)

—  

(8)
489  
33  
1  
—  
141  

—  

—  

(15)
—  

(1)

(90)

9  
—  
—  
71  

—  

—  

(29)
—  

(3)
136  
11  
—  
—  
13  

216  

3  

(130)

—  
203  

(184)
156  
6  
—  
193  

—  

—  

(78)
—  

(4)
39  
40  
—  
—  
94  

—  

—  

(51)
—  

(2)
88  
68  
—  
—  
14  

—

—

(18)

—

(1)

86

35

—

—

16

(10,469)

  $

(3,077)

  $

(3,456)

  $

(1,788)

  $

(1,240)

$

(2,058)

$

(1,061)

$

(600)

$

(489)

(732)

(705)

(13)

(1)

(4)

(8)

(2)

(3)

(4)

(11,201)

  $

(3,782)

  $

(3,469)

  $

(1,789)

  $

(1,244)

$

(2,066)

$

(1,063)

$

(603)

$

(493)

__________
(a)

Includes remeasurement impacts related to the TCJA.

381

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table provides the Registrants’ carryforwards and any corresponding valuation allowances as of December 31, 2018 :

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Successor

811

(a)  

816

—  

—

—  

—  

—  

—  

—  

Federal

Federal general business credits
carryforwards

State

State net operating losses

4,103

(b)  

1,544

(b)  

Deferred taxes on state tax attributes
(net)

272

104

—  

—  

224

(c)   

395 (d)  

1,492

(e)  

192

(f)  

772

(g)  

365

(h)  

18

26  

102  

12  

52  

26

35

Valuation allowance on state tax
attributes
__________
(a) Exelon’s federal general business credit carryforwards will begin expiring in 2033.
(b) Exelon’s and Generation's state net operating losses and credit carryforwards, which are presented on a post-apportioned basis, will begin expiring in 2019.
(c) PECO's state net operating loss carryforwards, which are presented on a post-apportioned basis, will begin expiring in 2031.
(d) BGE's state net operating loss carryforwards, which are presented on a post-apportioned basis, will begin expiring in 2026.
(e) PHI's state net operating loss carryforwards, which are presented on a post-apportioned basis, will begin expiring in 2036.
(f) Pepco's state net operating loss carryforwards, which are presented on a post-apportioned basis, will begin expiring in 2033.
(g) DPL's state net operating loss carryforwards, which are presented on a post-apportioned basis, will begin expiring in 2030.
(h) ACE's state net operating loss carryforwards, which are presented on a post-apportioned basis, will begin expiring in 2031.

—  

—  

—  

—  

1  

6  

26  

—  

Tabular Reconciliation of Unrecognized Tax Benefits

The following tables provide a reconciliation of the Registrants’ unrecognized tax benefits as of December 31, 2018 , 2017 and 2016 :

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Unrecognized tax benefits at January 1, 2018

$

Change to positions that only affect timing

Increases based on tax positions prior to 2018

Decreases based on tax positions prior to 2018

Decrease from settlements with taxing authorities

Decreases from expiration of statute of limitations

Unrecognized tax benefits at December 31, 2018

$

743   $
15  
30  

(251)

(53)

(7)
477   $

468

  $

15

21

(36)

(53)

(7)

408

  $

2   $
—  
—  
—  
—  
—  
2   $

—   $
—  
—  
—  
—  
—  
—   $

120   $
—  
—  

(120)

—  
—  

125   $
—  
8  

(88)
—  
—  

59   $
—  
7  

(66)
—  
—  

21   $
—  
1  

(22)
—  
—  

— $

45

$

— $

— $

14

—

—

—

—

—

14

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Unrecognized tax benefits at January 1, 2017

Increases based on tax positions prior to 2017

Decreases based on tax positions prior to 2017

Decrease from settlements with taxing authorities

Unrecognized tax benefits at December 31, 2017

$

$

  $

916

28

(196)

(5)

  $

490
—  

(17)

(5)

  $

(12)
14  
—  
—  

—   $
—  
—  
—  

120   $
—  
—  
—  

172   $
14  

(61)
—  

80   $
—  

(21)
—  

37   $
—  

(16)
—  

743

$

468

$

2

$

— $

120

$

125

$

59

$

21

$

22

14

(22)

—

14

382

 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Unrecognized tax benefits at January 1, 2016

$

1,078

  $

534

  $

Merger balance transfer

Increases based on tax positions related to 2016

Change to positions that only affect timing

Increases based on tax positions prior to 2016

Decreases based on tax positions prior to 2016

Decreases from settlements with taxing authorities

Unrecognized tax benefits at December 31, 2016

$

22  
108  

(332)

88  

(21)

(27)
916   $

5

10

(12)
—  

(20)

(27)

142   $
—  
—  

(154)

—  
—  
—  

—   $
—  
—  
—  
—  
—  
—  
—   $

120   $
—  
—  
—  
—  
—  
—  

120

$

22   $

(5)
59  
—  
96  
—  
—  

8   $
—  
21  
—  
51  
—  
—  

3   $
—  
16  
—  
18  
—  
—  

172

$

80

$

37

$

—

—

22

—

—

—

—

22

490

  $

(12)

  $

As a result of a court decision issued in July 2018 to an unrelated taxpayer, Exelon's and Generation’s unrecognized federal and state tax benefits increased in
the  third quarter  of 2018  by approximately  $71 million . Approximately $20 million of  this  increase  impacted  Exelon's  and  Generation’s  effective  tax  rate  and
resulted  in  a  charge  to  earnings  in  the  third  quarter  of  2018.  Exelon’s  and  Generation’s  unrecognized  federal  and  state  tax  benefits  decreased  in  the  fourth
quarter of 2018 by approximately $90 million due to the settlement of a federal audit issue with IRS Appeals. The recognition of these tax benefits decreased the
effective tax rate at Exelon and Generation resulting in an income tax benefit of approximately $9 million . 

In the  fourth  quarter  of 2018,  Exelon,  Generation,  BGE, PHI, Pepco,  and  DPL decreased  their unrecognized  state  tax benefits  by $241 million , $33 million ,
$120  million  , $88  million  , $66  million  ,  and  $22  million  ,  respectively,  due  to  the  receipt  of  favorable  guidance  with  respect  to  the  deductibility  of  certain
depreciable fixed assets.  The recognition of these tax benefits decreased the effective tax rate at Exelon and Generation resulting in an income tax benefit of
approximately $26 million .  The recognition of the tax benefits related to BGE, PHI, Pepco, and DPL was offset by corresponding regulatory liabilities and that
portion had no immediate impact to their effective tax rate.

Exelon established a liability for an uncertain tax position associated with the tax deductibility of certain merger commitments incurred by Exelon in connection
with the acquisitions of Constellation in 2012 and PHI in 2016. In the first quarter 2017, as a part of its examination of Exelon's return, the IRS National Office
issued guidance concurring with Exelon's position that the merger commitments were deductible. As a result, Exelon, Generation, PHI, Pepco, DPL, and ACE
decreased their liability for unrecognized tax benefits by $146 million , $19 million , $59 million , $21 million , $16 million and $22 million , respectively, in the first
quarter of 2017 resulting in a benefit to Income taxes on Exelon's, Generation's, PHI's, Pepco's, DPL's, and ACE's Consolidated Statements of Operations and
Comprehensive Income and corresponding decreases in their effective tax rates.

Exelon reduced the liability related to the uncertain tax position associated with the like-kind exchange in the second quarter of 2017.

Unrecognized tax benefits that if recognized would affect the effective tax rate

Exelon, Generation, ComEd and PHI have $463 million , $408 million , $2 million and $31 million , respectively, of unrecognized tax benefits at December 31,
2018 that, if recognized, would decrease the effective tax rate. PHI has $21 million of unrecognized state tax benefits at December 31, 2018 that, if recognized,
$14 million would be in the form of a net operating loss carryforward, which is expected to require a full valuation allowance based on present circumstances.
PHI and ACE have $14 million of unrecognized tax benefits at December 31, 2018 that,  if recognized,  may be  included  in future  base  rates  and  that  portion
would have no impact to the effective tax rate.

Exelon, Generation, ComEd and PHI had $523 million , $461 million , $2 million and $32 million , respectively, of unrecognized tax benefits at December 31,
2017 that, if recognized, would decrease the effective tax rate. BGE, PHI, Pepco, DPL, and ACE have $120 million , $94 million , $59 million , $21 million and
$14 million of unrecognized tax benefits at December 31, 2017 that, if recognized, may be included in future base rates and that portion would have no impact to
the effective tax rate.

383

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon,  Generation,  PHI,  Pepco,  DPL,  and  ACE  had  $633  million  , $483  million  , $93  million  , $21  million  , $16  million  ,  and  $22  million  ,  respectively,  of
unrecognized tax benefits at December 31, 2016 that, if recognized, would decrease the effective tax rate. BGE, PHI, Pepco and DPL had $120 million , $80
million , $59 million , and $21 million of unrecognized tax benefits at December 31, 2016 that, if recognized, may be included in future base rates and that portion
would have no impact to the effective tax rate.

Unrecognized tax benefits that if recognized would affect only the timing of tax payments

There are no unrecognized tax benefits as of December 31, 2018 that affect only the timing of tax payments.

Exelon and Generation had $7 million of unrecognized tax benefits at December 31, 2017 for which the ultimate tax benefit is highly certain, but for which there
is uncertainty about the timing of such benefits.

Exelon,  Generation  and  ComEd  had  $83 million , $7 million and $(12) million of  unrecognized  tax  benefits  at  December  31,  2016  for  which  the  ultimate  tax
benefit is highly certain, but for which there is uncertainty about the timing of such benefits.

The disallowance of such positions would not materially affect the annual effective tax rate but would accelerate the payment of cash to, or defer the receipt of
the cash tax benefit from, the taxing authority to an earlier or later period respectively.

Reasonably possible the total amount of unrecognized tax benefits could significantly increase or decrease within 12 months after the reporting date

Like-Kind Exchange

As of December  31,  2018  ,  Exelon  and  ComEd  have  approximately  $33 million and $ 2 million ,  respectively,  of  unrecognized  federal  and  state  income  tax
benefits related to the like-kind exchange litigation described further below. If Exelon does not appeal the October 2018 U.S. Court of Appeals for the Seventh
Circuit's decision to the U.S. Supreme Court, Exelon's and ComEd's unrecognized tax benefits will decrease in the first quarter of 2019. See below for further
details.

Settlement of Income Tax Audits, Refund Claims, and Litigation

As of December 31, 2018 , Exelon, Generation,  PHI and ACE have approximately  $425 million , $411 million , $14 million , and $ 14 million respectively, of
unrecognized  federal  and  state  tax  benefits  that  could  significantly  decrease  within  the  12  months  after  the  reporting  date  as  a  result  of  completing  audits,
potential  settlements,  refund  claims,  and  the  outcomes  of  pending  court  cases.  Of  the  above  unrecognized  tax  benefits,  Exelon  and  Generation  have  $411
million that, if recognized, would decrease the effective tax rate. The unrecognized tax benefit related to PHI and ACE, if recognized, may be included in future
base rates and that portion would have no impact to the effective tax rate.

Total amounts of interest and penalties recognized

The  following  tables  represent  the  net  interest  and  penalties  receivable  (payable),  including  interest  and  penalties  related  to  tax  positions  reflected  in  the
Registrants’ Consolidated Balance Sheets.

Net interest receivable (payable) as of

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

December 31, 2018

December 31, 2017

$

236   $

233  

  $

(2)

(3)

4   $

4  

—   $

—   $

—  

—  

1   $

2  

—   $

—   $

—  

—  

Net penalties payable as of

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

December 31, 2018

December 31, 2017

$

(17)   $

(17)  

—   $

—  

—   $

—  

—   $

—   $

—   $

—   $

—   $

—  

—  

—  

—  

—  

—

—

—

—

384

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables set forth the net interest and penalty expense, including interest and penalties related to tax positions, recognized in Interest expense, net
and Other, net in Other income and deductions in the Registrants’ Consolidated Statements of Operations and Comprehensive Income.

Net interest expense (income) for the years
ended

December 31, 2018

December 31, 2017

December 31, 2016

Net penalty expense (income) for the
years ended

December 31, 2018

December 31, 2017

December 31, 2016

PHI

Net interest expense

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

$

(3)   $

—   $

—   $

—   $

—   $

—   $

—   $

37  

165  

(1)

(13)

11  

117  

—  

—  

—  

—  

—  

6  

—  

—  

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

$

—   $

—   $

—   $

—   $

—   $

—   $

—   $

(2)  

106  

—  

—  

—  

86  

—  

—  

—  

—  

—  

—  

—  

—  

—

—

(1)

—

—

—

December 31, 2018

December 31, 2017

March 24, 2016 to December 31,
2016

January 1, 2016 to March 23, 2016

$

—   $

—   $

(2)

    $

—

Successor

Predecessor

Description of tax years open to assessment by major jurisdiction

Taxpayer

Open Years

Exelon (and predecessors) and subsidiaries consolidated federal income tax returns

PHI Holdings and subsidiaries consolidated federal income tax returns

Exelon and subsidiaries Illinois unitary income tax returns

Constellation combined New York corporate income tax returns

Exelon combined New York corporate income tax returns

Exelon New Jersey corporate income tax returns

Exelon Pennsylvania corporate net income tax returns

PECO Pennsylvania separate company returns

DPL Delaware separate company returns

ACE New Jersey separate company returns

Exelon and subsidiaries District of Columbia corporate income tax returns

PHI Holdings and subsidiaries District of Columbia corporate income tax returns

Various separate company Maryland corporate net income tax returns

Other Tax Matters

Like-Kind Exchange

1999, 2001-2017

2013, 2015-2016

2010-2017

2010-March 2012

2011-2017

2013-2017

2011-2017 
2015-2017

Same as federal

2014-2017

2015-2017

2015-2016 
Same as federal

Exelon, through its ComEd subsidiary, took a position on its 1999 income tax return to defer approximately $1.2 billion of tax gain on the sale of ComEd’s fossil
generating assets. The gain was deferred by reinvesting a portion of the proceeds from the sale in qualifying replacement property under the like-kind exchange
provisions of the IRC. The like-kind exchange replacement property purchased by Exelon included interests in three municipal-owned

385

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

electric generation facilities which were properly leased back to the municipalities. As previously disclosed, Exelon terminated its investment in one of the leases
in 2014 and the remaining two leases were terminated in 2016.

The  IRS  asserted  that  the  Exelon  purchase  and  leaseback  transaction  was  substantially  similar  to  a  leasing  transaction,  known  as  a  SILO,  which  is  a  listed
transaction  that  the  IRS  has  identified  as  a  potentially  abusive  tax  shelter.  Thus,  they  disagreed  with  Exelon's  position  and  asserted  that  the  entire  gain  of
approximately $1.2 billion was  taxable  in  1999.  In  2013,  the  IRS  issued  a  notice  of  deficiency  to  Exelon  and  Exelon  filed  a  petition  to  initiate  litigation  in  the
United States Tax Court. In 2016, the Tax Court held that Exelon was not entitled to defer gain on the transaction. In addition to the tax and interest related to
the gain deferral, the Tax Court also ruled that Exelon was liable for $90 million in penalties and interest on the penalties. Exelon has fully paid the amounts
assessed resulting from the Tax Court decision.

In September 2017, Exelon appealed the Tax Court decision to the U.S. Court of Appeals for the Seventh Circuit. In October 2018, the U.S. Court of Appeals for
the Seventh Circuit affirmed the Tax Court’s decision. Exelon filed a petition seeking rehearing of the Seventh Circuit’s decision, but the Seventh Circuit denied
that petition in December 2018.  Exelon has until March 5, 2019 to seek a further review by the U.S. Supreme Court.

State Income Tax Law Changes

On  April  24,  2018,  Maryland  enacted  companion  bills,  House  Bill  1794  and  Senate  Bill  1090,  providing  for  a  phase  in  of  a  single  sales  factor  apportionment
formula from the current three factor formula for determining an entity's Maryland state income taxes. The single sales factor will be fully phased in by 2022.

In the second quarter of 2018, Exelon, Generation, PHI, Pepco and DPL recorded a one-time increase to deferred income taxes of approximately $16 million ,
$5 million , $17 million , $16 million and $1 million , respectively. At PHI, Pepco and DPL, the increase to the Maryland deferred income tax liability was offset by
regulatory assets. Further, the change in tax law is not expected to have a material ongoing impact to Exelon's, Generation's, PHI's, Pepco's or DPL's future
results of operations.

Long-Term Marginal State Income Tax Rate (Exelon, Generation, PHI and Pepco)

In the third quarter of 2018, Exelon reviewed and updated its marginal state income tax rates based on 2017 state apportionment rates. As a result of the rate
changes, in the third quarter of 2018, Exelon, Generation, PHI and DPL recorded a one-time decrease to deferred income taxes of approximately $50 million ,
$53 million , $4 million and $2 million respectively. Pepco recorded a one-time increase to deferred income taxes of approximately $1 million . Exelon, PHI and
DPL recorded a corresponding regulatory liability of approximately $1 million , $1 million and $2 million respectively. Pepco recorded a corresponding regulatory
asset of approximately $1 million . Further, Exelon, Generation and PHI recorded a decrease to income tax expense (net of federal taxes) of approximately $50
million , $53 million and $3 million .

Allocation of Tax Benefits (All Registrants)

Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE are all party to an agreement with Exelon and other subsidiaries of Exelon that provides for the
allocation of consolidated tax liabilities and benefits (Tax Sharing Agreement). The Tax Sharing Agreement provides that each party is allocated an amount of
tax similar to that which would be owed had the party been separately subject to tax. In addition, any net benefit attributable to Exelon is reallocated to the other
Registrants. That allocation is treated as a contribution to the capital of the party receiving the benefit. During 2018, Generation, PECO, BGE, PHI and ComEd
recorded an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement of $155 million , $48 million , $26 million , $2 million and $1 million
respectively. Pepco, DPL, and ACE did not record an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement as a result of a tax net
operating loss.

During 2017, Generation, PECO, BGE, and PHI recorded an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement of $102 million ,
$16 million , $10 million and $7 million respectively. ComEd, Pepco, DPL, and ACE did not record an allocation of federal tax benefits from Exelon under the Tax
Sharing Agreement as a result of a tax net operating loss.

During  2016,  Generation,  PECO  and  BGE  recorded  an  allocation  of  federal  tax  benefits  from  Exelon  under  the  Tax  Sharing  Agreement  of  $94 million , $18
million and $8 million respectively. ComEd did not record an allocation of federal tax benefits from Exelon under the Tax Sharing Agreement as a result of a tax
net operating loss. PHI, Pepco,

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

DPL and ACE did not record an allocation of federal tax benefits from Exelon as they were not a part of Exelon's 2015 consolidated tax return.

15. Asset Retirement Obligations (All Registrants)

Nuclear Decommissioning Asset Retirement Obligations

Generation has a legal obligation to decommission its nuclear power plants following the expiration of their operating licenses. To estimate its decommissioning
obligation  related  to  its  nuclear  generating  stations  for  financial  accounting  and  reporting  purposes,  Generation  uses  a  probability-weighted,  discounted  cash
flow  model  which,  on  a  unit-by-unit  basis,  considers  multiple  outcome  scenarios  that  include  significant  estimates  and  assumptions,  and  are  based  on
decommissioning  cost  studies,  cost  escalation  rates,  probabilistic  cash  flow  models  and  discount  rates.  Generation  updates  its  ARO  annually  unless
circumstances warrant more frequent updates, based on its review of updated cost studies and its annual evaluation of cost escalation factors and probabilities
assigned to various scenarios.

The  following  table  provides  a  rollforward  of  the  nuclear  decommissioning  ARO  reflected  in  Exelon’s  and  Generation’s  Consolidated  Balance  Sheets,  from
January 1, 2017 to December 31, 2018 :

Nuclear decommissioning ARO at January 1, 2017

$

8,734

Accretion expense

Acquisition of FitzPatrick

Net increase due to changes in, and timing of, estimated future cash flows

Costs incurred related to decommissioning plants

Nuclear decommissioning ARO at December 31, 2017  (a)
Accretion expense

Net decrease due to changes in, and timing of, estimated future cash flows

Costs incurred related to decommissioning plants

Nuclear decommissioning ARO at December 31, 2018  (a) (b)
__________
(a)

458

444

34

(8)

9,662

478

(77)

(58)

$

10,005

Includes  $22 million and $13 million as  the  current  portion  of  the  ARO  at  December  31,  2018  and 2017 ,  respectively,  which  is  included  in  Other  current  liabilities  in
Exelon’s and Generation’s Consolidated Balance Sheets.
Includes  $772  million  of  ARO  related  to  Oyster  Creek  which  is  classified  as  Liabilities  held  for  sale  in  Exelon's  and  Generation's  Consolidated  Balance  Sheets  at
December 31, 2018 . See Note 5 — Mergers, Acquisitions and Dispositions for additional information.

(b)

The net $77 million decrease in the ARO during 2018 for changes in the amounts and timing of estimated decommissioning cash flows was driven by multiple
adjustments throughout the year, some with offsetting impacts. These adjustments include a $203 million decrease primarily due to lower estimated costs for the
construction of interim spent fuel storage at TMI and a net decrease in estimated costs to decommission Calvert Cliffs, FitzPatrick, Limerick, and Salem nuclear
units resulting from the completion of updated cost studies. These adjustments also include a decrease due to changes in decommissioning scenarios and their
probabilities. These decreases were partially offset by a $116 million increase for the impact of the early retirement and the announced pending sale of Oyster
Creek and a $122 million increase for estimated cost escalation rates, primarily for labor, energy and waste burial costs. See Note 5 — Mergers, Acquisitions
and Dispositions and Note 8 — Early Plant Retirements for additional information regarding Oyster Creek.

The net $34 million increase in the ARO during 2017 for changes in the amounts and timing of estimated decommissioning cash flows was driven by multiple
adjustments throughout the year, some with offsetting impacts. These adjustments include a $178 million increase due to higher assumed probabilities of early
retirement of Salem and a $138 million increase in TMI’s ARO liability associated with the May 30, 2017 announcement to early retire the unit on September 30,
2019. The increase in TMI's ARO liability incorporates the early shutdown date, increases in the probabilities of longer term decommissioning scenarios, and an
increase in the estimated costs to decommission based on an updated decommissioning cost study. See Note 8 — Early Plant Retirements for

387

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

additional information regarding Salem and TMI. These increases in the ARO were partially offset by a $180 million decrease for refinements in estimated fleet
wide  labor  costs  expected  to  be  incurred  for  certain  on-site  personnel  during  decommissioning  as  well  as  net  decreases  resulting  from  updates  to  the  cost
studies of Clinton, Quad Cities and Dresden.

NDT Funds

NDT  funds  have  been  established  for  each  generation  station  unit  to  satisfy  Generation’s  nuclear  decommissioning  obligations.  Generally,  NDT  funds
established for a particular unit may not be used to fund the decommissioning obligations of any other unit.

The  NDT  funds  associated  with  Generation's  nuclear  units  have  been  funded  with  amounts  collected  from  the  previous  owners  and  their  respective  utility
customers.  PECO  is  authorized  to  collect  funds,  in  revenues,  for  decommissioning  the  former  PECO  nuclear  plants  through  regulated  rates,  and  these
collections are scheduled through the operating lives of the former PECO plants. The amounts collected from PECO customers are remitted to Generation and
deposited into the NDT funds for the unit for which funds are collected. Every five years, PECO files a rate adjustment with the PAPUC that reflects PECO’s
calculations of the estimated amount needed to decommission each of the former PECO units based on updated fund balances and estimated decommissioning
costs. The rate adjustment is used to determine the amount collectible from PECO customers. On March 31, 2017, PECO filed its Nuclear Decommissioning
Cost  Adjustment  with  the  PAPUC  proposing  an  annual  recovery  from  customers  of  approximately  $4  million  .  This  amount  reflects  a  decrease  from  the
previously approved annual collection of approximately $ 24 million primarily due to the removal of the collections for Limerick Units 1 and 2 as a result of the
NRC approving the extension of the operating licenses for an additional 20 years. On August 8, 2017, the PAPUC approved the filing and the new rates became
effective January 1, 2018.

Any shortfall of funds necessary for decommissioning, determined for each generating station unit, is ultimately required to be funded by Generation, with the
exception of a shortfall for the current decommissioning activities at Zion Station, where certain decommissioning activities have been transferred to a third-party
(see Zion Station Decommissioning below) and the CENG units, where any shortfall is required to be funded by both Generation and EDF. Generation, through
PECO,  has  recourse  to  collect  additional  amounts  from  PECO  customers  related  to  a  shortfall  of  NDT  funds  for  the  former  PECO  units,  subject  to  certain
limitations  and  thresholds,  as  prescribed  by  an  order  from  the  PAPUC.  Generally,  PECO,  and  likewise  Generation  will  not  be  allowed  to  collect  amounts
associated  with  the  first  $50  million  of  any  shortfall  of  trust  funds  compared  to  decommissioning  costs,  as  well  as  5%  of  any  additional  shortfalls,  on  an
aggregate basis for all former PECO units. The initial $50 million and up to 5% of any additional shortfalls would be borne by Generation. No recourse exists to
collect  additional  amounts  from  utility  customers  for  any  of  Generation's  other  nuclear  units.  With  respect  to  the  former  ComEd  and  PECO  units,  any  funds
remaining  in  the  NDTs  after  all  decommissioning  has  been  completed  are  required  to  be  refunded  to  ComEd’s  or  PECO’s  customers,  subject  to  certain
limitations that  allow sharing of excess funds  with Generation  related  to the former  PECO units. With respect to Generation's  other nuclear  units, Generation
retains any funds remaining after decommissioning. However, in connection with CENG's acquisition of the Nine Mile Point and Ginna plants and settlements
with certain regulatory agencies, CENG is subject to certain conditions pertaining to NDT funds that, if met, could possibly result in obligations to make payments
to certain third parties (clawbacks). For Nine Mile Point and Ginna, the clawback provisions are triggered only in the event that the required decommissioning
activities  are  discontinued  or  not  started  or  completed  in  a  timely  manner.  In  the  event  that  the  clawback  provisions  are  triggered  for  Nine  Mile  Point,  then,
depending upon the triggering event, an amount equal to 50% of the total amount withdrawn from the funds for non-decommissioning activities or 50% of any
excess funds in the trust funds above the amounts required for decommissioning (including spent fuel management and decommissioning) is to be paid to the
Nine Mile Point sellers. In the event that the clawback provisions are triggered for Ginna, then an amount equal to any estimated cost savings realized by not
completing any of the required decommissioning activities is to be paid to the Ginna sellers. Generation expects to comply with applicable regulations and timely
commence and complete all required decommissioning activities.

At December  31,  2018  and 2017 ,  Exelon  and  Generation  had  NDT  funds  totaling  $12,695  million  and  $  13,349  million  ,  respectively.  Included  within  the
December 31, 2018 balance is the $890 million reclassification of Oyster Creek NDT as Assets held for sale in Exelon's and Generation's Consolidated Balance
Sheets. See Note 5 — Mergers, Acquisitions and Dispositions for additional information regarding the announced pending sale of Oyster Creek. The NDT funds
include $144 million and $77 million for the current portion of the NDT at December 31, 2018 and 2017 , respectively, which are included in Other current assets
in Exelon's and Generation's Consolidated

388

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Balance Sheets. See Note 11 — Fair Value of Financial Assets and Liabilities for additional information related to the NDT funds.

The following table provides unrealized (losses) gains on NDT funds of Exelon and Generation for the years ended 2018 , 2017 and 2016 :

Net unrealized (losses) gains on NDT funds—Regulatory Agreement Units (a)

$

(715)   $

455   $

216

2018

2017

2016

Net unrealized (losses) gains on NDT funds—Non-Regulatory Agreement Units (b)
__________
(a) Net  unrealized  (losses)  gains  related  to  Generation’s  NDT  funds  associated  with  Regulatory  Agreement  Units  are  included  in  Regulatory  liabilities  in  Exelon’s

194

(483)  

521  

Consolidated Balance Sheets and Noncurrent payables to affiliates in Generation’s Consolidated Balance Sheets.

(b) Net  unrealized  (losses)  gains  related  to  Generation’s  NDT  funds  with  Non-Regulatory  Agreement  Units  are  included  within  Other,  net  in  Exelon’s  and  Generation’s

Consolidated Statements of Operations and Comprehensive Income.

Realized earnings, including interest and dividends on the NDT funds, for the non-Regulatory Agreement Units investments are recognized when earned and
are included in Other, net in Exelon’s and Generation’s Consolidated Statements of Operations and Comprehensive Income whereas the Regulatory Agreement
Units are eliminated within Other, net.

Accounting Implications of the Regulatory Agreements with ComEd and PECO

Based on the regulatory agreements with the ICC and PAPUC that dictate Generation’s obligations related to the shortfall or excess of NDT funds necessary for
decommissioning the former ComEd units on a unit-by-unit basis and the former PECO units in total, decommissioning-related activities, including realized and
unrealized  gains  and  losses  on  the  NDT  funds  and  accretion  of  the  decommissioning  obligation,  are  generally  offset  within  Exelon’s  and  Generation’s
Consolidated Statements of Operations and Comprehensive Income. For the former ComEd units, decommissioning-related activities are generally offset within
Exelon’s  and  Generation’s  Consolidated  Statements  of  Operations  and  Comprehensive  Income  as  long  as  the  NDT  funds  are  expected  to  exceed  the  total
estimated  decommissioning  obligation.  For  the  former  PECO  units,  decommissioning-related  activities  are  generally  offset  within  Exelon’s  and  Generation’s
Consolidated  Statements  of  Operations  and  Comprehensive  Income  regardless  of  whether  the  NDT  funds  are  expected  to  exceed  or  fall  short  of  the  total
estimated  decommissioning  obligation.  The  offset  of  decommissioning-related  activities  within  the  Consolidated  Statement  of  Operations  and  Comprehensive
Income  results  in  an  equal  adjustment  to  the  noncurrent  payables  to  affiliates  at  Generation.  ComEd  and  PECO  have  recorded  an  equal  noncurrent  affiliate
receivable from Generation and corresponding regulatory liability.

Should  the  expected  value  of  the  NDT  fund  for  any  former  ComEd  unit  fall  below  the  amount  of  the  expected  decommissioning  obligation  for  that  unit,  the
accounting  to  offset  decommissioning-related  activities  in  the  Consolidated  Statement  of  Operations  and  Comprehensive  Income  for  that  unit  would  be
discontinued,  the  decommissioning-related  activities  would be  recognized  in the  Consolidated  Statements  of  Operations  and  Comprehensive  Income  and  the
adverse impact to Exelon’s and Generation’s financial statements could be material. As of December 31, 2018 , the NDT funds of each of the former ComEd
units, except for Zion (see Zion Station Decommissioning below), are expected to exceed the related decommissioning obligation for each of the units. For the
purposes  of  making  this  determination,  the  decommissioning  obligation  referred  to  is  different,  as  described  below,  from  the  calculation  used  in  the  NRC
minimum funding obligation filings based on NRC guidelines.

Any  changes  to  the  PECO  regulatory  agreements  could  impact  Exelon’s  and  Generation’s  ability  to  offset  decommissioning-related  activities  within  the
Consolidated Statement of Operations and Comprehensive Income, and the impact to Exelon’s and Generation’s financial statements could be material.

The decommissioning-related activities related to the Non-Regulatory Agreement Units are reflected in Exelon’s and Generation’s Consolidated Statements of
Operations and Comprehensive Income.

See Note 4 — Regulatory Matters and Note 25 — Related Party Transactions for additional information regarding regulatory liabilities at ComEd and PECO and
intercompany balances between Generation, ComEd and PECO

389

 
 
 
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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

reflecting the obligation to refund to customers any decommissioning-related assets in excess of the related decommissioning obligations.

Zion Station Decommissioning

In  2010,  Generation  completed  an  Asset  Sale  Agreement  (ASA)  under  which  ZionSolutions  assumed  responsibility  for  decommissioning  Zion  Station  and
Generation  transferred  to  ZionSolutions  substantially  all  the  Zion  Station’s  assets,  including  the  related  NDT  funds.  Pursuant  to  the  ASA,  ZionSolutions  will
periodically  request  reimbursement,  subject  to  certain  restrictions,  from  the  Zion  Station-related  NDT  funds  for  costs  incurred  related  to  its  decommissioning
efforts at Zion Station. As the transfer of the Zion Station assets did not qualify for asset sale accounting treatment, the related NDT funds were reclassified as
pledged  assets  for  Zion  Station  decommissioning,  which  are  recorded  within  Other  current  assets  within  Generation’s  and  Exelon’s  Consolidated  Balance
Sheets and will continue to be measured in the same manner as prior to the completion of the transaction, and the transferred ARO for decommissioning was
replaced  with  a  payable  for  Zion  Station  decommissioning,  which  is  recorded  in  Other  current  liabilities  in  Exelon’s  and  Generation’s  Consolidated  Balance
Sheets. Changes in the value of the Zion Station NDT fund assets, net of applicable taxes, are recorded as a change in the payable to ZionSolutions. At no point
will the payable to ZionSolutions exceed the project budget of the costs remaining to decommission Zion Station.

Generation  has  retained  its  obligation  for  the  SNF.  Following  ZionSolutions'  completion  of  its  contractual  obligations  and  transfer  of  the  NRC  license  to
Generation, Generation will store the SNF at Zion Station until it is transferred to the DOE for ultimate disposal, and will complete all remaining decommissioning
activities associated with the SNF dry storage facility. Generation has a liability of $120 million , which is included within the nuclear decommissioning ARO at
December  31,  2018  .  Generation  also  has  retained  NDT  assets  to  fund  its  obligation  to  maintain  the  SNF  at  Zion  Station  until  transfer  to  the  DOE  and  to
complete all remaining decommissioning activities for the SNF storage facility. Any shortage of funds necessary to maintain the SNF and decommission the SNF
storage facility is ultimately required to be funded by Generation. Any Zion Station NDT funds remaining after the completion of all decommissioning activities
will be returned to ComEd customers in accordance with the applicable orders.

The following table provides Exelon's and Generation's pledged assets and payables to ZionSolutions, and withdrawals by ZionSolutions at December 31, 2018
and 2017 :

$

2018

2017

9   $

9  

965  

39

37

942

Carrying value of Zion Station pledged assets

Current payable to ZionSolutions (a)

Cumulative withdrawals by ZionSolutions to pay decommissioning costs (b)
_______
(a)

Included  in  Other  current  liabilities  within  Exelon's  and  Generation's  Consolidated  Balance  Sheets.  Excludes  a  liability  recorded  within  Exelon’s  and  Generation’s
Consolidated Balance Sheets related to the tax obligation on the unrealized gains and losses associated with the Zion Station NDT funds. The NDT funds will be utilized
to satisfy the tax obligations as gains and losses are realized.
Includes project expenses to decommission Zion Station and estimated tax payments on Zion Station NDT fund earnings.

(b)

ZionSolutions leased the land associated with Zion Station from Generation pursuant to a Lease Agreement. Under the Lease Agreement, ZionSolutions has
committed to complete the required decommissioning work according to an established schedule and constructed a dry cask storage facility on the land and has
loaded the SNF from the SNF pools onto the dry cask storage facility at Zion Station. Rent payable under the Lease Agreement is $1.00 per year, although the
Lease Agreement requires ZionSolutions to pay property taxes associated with Zion Station and penalty rents may accrue if there are unexcused delays in the
progress  of  decommissioning  work  at  Zion  Station  or  the  construction  of  the  dry  cask  SNF  storage  facility.  To  reduce  the  risk  of  default  by  ZionSolutions,
EnergySolutions provided a $200 million letter of credit to be used to fund decommissioning costs in the event the NDT assets are insufficient. In accordance
with  the  terms  of  the  ASA,  the  letter  of  credit  was  reduced  to  $45  million  in  May  2018  due  to  the  completion  of  key  decommissioning  milestones.
EnergySolutions and its parent company have also provided a performance guarantee and EnergySolutions has entered into other agreements that will provide
rights and remedies for Generation and the NRC in the case of other specified events of default, including a special purpose easement for disposal capacity at
the EnergySolutions site in Clive, Utah, for all LLRW volume of Zion Station.

390

 
 
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NRC Minimum Funding Requirements

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

NRC  regulations  require  that  licensees  of  nuclear  generating  facilities  demonstrate  reasonable  assurance  that  funds  will  be  available  in  specified  minimum
amounts to decommission the facility at the end of its life. The estimated decommissioning obligations as calculated using the NRC methodology differ from the
ARO recorded in Generation’s and Exelon’s Consolidated Balance Sheets primarily due to differences in the type of costs included in the estimates, the basis for
estimating such costs, and assumptions regarding the decommissioning alternatives to be used, potential license renewals, decommissioning cost escalation,
and the growth rate in the NDT funds. Under NRC regulations, if the minimum funding requirements calculated under the NRC methodology are less than the
future value of the NDT funds, also calculated under the NRC methodology, then the NRC requires either further funding or other financial guarantees.

Key assumptions used in the minimum funding calculation using the NRC methodology at December 31, 2018 include: (1) consideration of costs only for the
removal of radiological contamination at each unit; (2) the option on a unit-by-unit basis to use generic, non-site specific cost estimates; (3) consideration of only
one decommissioning scenario for each unit; (4) the plants cease operation at the end of their current license lives (with no assumed license renewals for those
units that have not already received renewals and with an assumed end-of-operations date of 2019 for TMI); (5) the assumption of current nominal dollar cost
estimates  that  are  neither  escalated  through  the  anticipated  period  of  decommissioning,  nor  discounted  using  the  CARFR;  and  (6)  assumed  annual  after-tax
returns on the NDT funds of 2% ( 3% for the former PECO units, as specified by the PAPUC).

In contrast, the key criteria and assumptions used by Generation to determine the ARO and to forecast the target growth in the NDT funds at December 31,
2018 include:  (1)  the  use  of  site  specific  cost  estimates  that  are  updated  at  least  once  every  five  years;  (2)  the  inclusion  in  the  ARO  estimate  of  all  legally
unavoidable costs required to decommission the unit (e.g., radiological decommissioning and full site restoration for certain units, on-site spent fuel maintenance
and storage subsequent to ceasing operations and until DOE acceptance, and disposal of certain low-level radioactive waste); (3) the consideration of multiple
scenarios where decommissioning and site restoration activities, as applicable, are completed under possible scenarios ranging from  10 to 70 years after the
cessation  of  plant  operations;  (4)  the  consideration  of  multiple  end  of  life  scenarios;  (5)  the  measurement  of  the  obligation  at  the  present  value  of  the  future
estimated costs and an annual average accretion of the ARO of approximately 5% through a period of approximately 30 years after the end of the extended lives
of the units; and (6) an estimated targeted annual pre-tax return on the NDT funds of 5.0% to 6.2% (as compared to a historical 5-year annual average pre-tax
return of approximately 4.9% ).

Generation is required to provide to the NRC a biennial report by unit (annually for units that have been retired or are within five years of the current approved
license life), based on values as of December 31, addressing Generation’s ability to meet the NRC minimum funding levels. Depending on the value of the trust
funds,  Generation  may  be  required  to  take  steps,  such  as  providing  financial  guarantees  through  letters  of  credit  or  parent  company  guarantees  or  making
additional contributions to the trusts, which could be significant, to ensure that the trusts are adequately funded and that NRC minimum funding requirements are
met. As a result, Exelon’s and Generation’s cash flows and financial positions may be significantly adversely affected.

Generation filed its biennial decommissioning funding status report with the NRC on March 30, 2017 for all units except for Zion Station which is included in a
separate report to the NRC submitted by ZionSolutions (see Zion Station Decommissioning above) and FitzPatrick which is still owned by Entergy as of the NRC
reporting period. This status report demonstrated adequate decommissioning funding assurance for all units except for Peach Bottom Unit 1. As a former PECO
plant,  financial  assurance  for decommissioning  Peach  Bottom  Unit 1 is provided  by  the  NDT fund  in  addition  to  collections  from  PECO  ratepayers.  See  NDT
Funds section above for additional information.

On March 28, 2018, Generation submitted its annual decommissioning funding status report with the NRC for shutdown reactors, reactors within five years of
shutdown except for Zion Station which is included in a separate report to the NRC submitted by EnergySolutions (see Zion Station Decommissioning above),
and reactor involved in an acquisition. This report reflected the status of decommissioning funding assurance as of December 31, 2017 and included an update
for the acquisition of FitzPatrick on March 31, 2017, the early retirement of TMI announced on May 30, 2017, an adjustment for the February 2, 2018 announced
retirement date of Oyster Creek and the updated status of Peach Bottom Unit 1 based on the new collections rate described above. As of December 31, 2017,
Generation provided adequate decommissioning funding assurance for all of its shutdown reactors, reactors within five years of shutdown, and reactor involved
in an acquisition.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation  will  file  its  next  decommissioning  funding  status  report  for  all  units  with  the  NRC  by  March  31,  2019.  This  report  will  reflect  the  status  of
decommissioning funding assurance as of December 31, 2018. A shortfall at any unit could necessitate that Generation address the shortfall by, among other
things, obtaining a parental guarantee for Generation's share of the funding assurance. However, the amount of any guarantee or other assurance will ultimately
depend on the decommissioning approach, the associated level of costs, and the decommissioning trust fund investment performance going forward.

As the future values of trust funds change due to market conditions, the NRC minimum funding status of Generation’s units will change. In addition, if changes
occur to the regulatory agreement with the PAPUC that currently allows amounts to be collected from PECO customers for decommissioning the former PECO
units, the NRC minimum funding status of those plants could change at subsequent NRC filing dates.

Non-Nuclear Asset Retirement Obligations (All Registrants)

Generation  has  AROs  for  plant  closure  costs  associated  with  its  fossil  and  renewable  generating  facilities,  including  asbestos  abatement,  removal  of  certain
storage tanks, restoring leased land to the condition it was in prior to construction of renewable generating stations and other decommissioning-related activities.
The Utility Registrants have AROs primarily associated with the abatement and disposal of equipment and buildings contaminated with asbestos and PCBs. See
Note 1 — Significant Accounting Policies for additional information on the Registrants’ accounting policy for AROs. 

The  following  table  provides  a  rollforward  of  the  non-nuclear  AROs  reflected  in  the  Registrants’  Consolidated  Balance  Sheets  from  January  1,  2017  to
December 31, 2018 :

Non-nuclear AROs at
January 1, 2017

Net (decrease) increase due to changes in, and
timing of, estimated future cash flows

Development projects

Accretion expense (a)

Deconsolidation of EGTP

Payments

Non-nuclear AROs at December 31, 2017

Net increase due to changes in, and timing of,
estimated future cash flows (b)
Accretion expense (a)

Asset divestitures

Payments

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

$

393   $

199

$

121

$

28

$ 24   $

14   $

2   $

9   $

3

(11)  

1  

18  

(7)  

(10)  

384  

80  

16  

(3)  

(6)  

(1)

1

10  

(7)  

(5)

197

35

10

(3)  

(1)

(13)

—

7  

—  

(2)

113

7

4

—  

(3)

(1)

—

1  

—  

(1)

27

—

1

—  

—

28

2  

—  

—  

—  

(2)  

24  

2  

1  

—  

(2)  

2  

—  

—  

—  

—  

16  

36  

—  

—  

—  

1  

—  

—  

—  

—  

3

34  

—  

—  

—  

1  

—  

—  

—  

—  

10

1  

—  

—  

—  

$ 25   $

52   $

37

$ 11

$

—

—

—

—

—

3

1

—

—

—

4

Non-nuclear AROs at December 31, 2018

$

471   $

238

$

121

$

__________
(a) For ComEd and PECO, the majority of the accretion is recorded as an increase to a regulatory asset due to the associated regulatory treatment.
(b)

In 2018, Pepco recorded an increase of $22 million in Operating and maintenance expense primarily related to asbestos identified at its Buzzard Point property as part of
an annual ARO study. Buzzard Point is a waterfront property in the District of Columbia occupied by an active substation and former Pepco operated steam plant building,
which Pepco retired and closed in 1981.

16. Retirement Benefits (All Registrants)

Exelon  sponsors  defined  benefit  pension  plans  and  other  postretirement  benefit  plans  for  essentially  all  current  employees.  Substantially  all  non-union
employees and electing union employees hired on or after January 1, 2001 participate in cash balance pension plans. Effective January 1, 2009, substantially all
newly-hired union-represented

392

 
 
 
 
 
 
 
 
 
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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

employees participate in cash balance pension plans. Effective February 1, 2018, most newly-hired Generation and BSC non-represented, non-craft, employees
are not eligible for pension benefits, and will instead be eligible to receive an enhanced non-discretionary employer contribution in an Exelon defined contribution
savings plan. Effective January 1, 2018, most newly-hired non-represented, non-craft, employees are not eligible for OPEB benefits and employees represented
by Local 614 are not eligible for retiree health care benefits.

Effective  January  1,  2019,  Exelon  is  merging  the  Exelon  Corporation  Cash  Balance  Pension  Plan  (CBPP)  into  the  Exelon  Corporation  Retirement  Program
(ECRP). The merging of the plans is not changing the benefits offered to the plan participants and, thus, has no impact on Exelon's pension obligation. However,
beginning  in  2019,  actuarial  losses  and  gains  related  to  the  CBPP  and  ECRP  will  be  amortized  over  participants’  average  remaining  service  period  of  the
merged ECRP rather than each individual plan.

393

Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The table below shows the pension and other postretirement benefit plans in which employees of each operating company participated at December 31, 2018 :

Name of Plan:

Qualified Pension Plans:

Exelon Corporation Retirement Program (a)

Exelon Corporation Cash Balance Pension Plan (a)
Exelon Corporation Pension Plan for Bargaining Unit
Employees (a)

Exelon New England Union Employees Pension Plan (a)
Exelon Employee Pension Plan for Clinton, TMI and Oyster
Creek (a)

Pension Plan of Constellation Energy Group, Inc. (b)
Pension Plan of Constellation Energy Nuclear Group, LLC
(c)

Nine Mile Point Pension Plan (c)
Constellation Mystic Power, LLC Union Employees Pension
Plan Including Plan A and Plan B (b)

Pepco Holdings LLC Retirement Plan (d)

Non-Qualified Pension Plans:
Exelon Corporation Supplemental Pension Benefit Plan and
2000 Excess Benefit Plan (a)
Exelon Corporation Supplemental Management Retirement
Plan (a)
Constellation Energy Group, Inc. Senior Executive
Supplemental Plan (b)
Constellation Energy Group, Inc. Supplemental Pension
Plan (b)
Constellation Energy Group, Inc. Benefits Restoration Plan
(b)
Constellation Energy Nuclear Plan, LLC Executive
Retirement Plan (c)  
Constellation Energy Nuclear Plan, LLC Benefits
Restoration Plan (c)
Baltimore Gas & Electric Company Executive Benefit Plan
(b)
Baltimore Gas & Electric Company Manager Benefit Plan (b)  
Pepco Holdings LLC 2011 Supplemental Executive
Retirement Plan (d)

Conectiv Supplemental Executive Retirement Plan  (d)
Pepco Holdings LLC Combined Executive Retirement Plan
(d)

Atlantic City Electric Director Retirement Plan (d)

Generation

ComEd

PECO

BGE

BSC

PHI

Pepco

DPL

ACE

Operating Company (e)

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

394

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
  
    
 
 
 
   
   
   
   
 
    
 
 
 
 
 
 
   
   
   
   
 
  
  
 
 
 
   
   
   
   
 
  
 
 
  
 
   
 
   
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
 
    
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
   
   
   
   
 
  
  
    
 
 
   
   
   
 
  
  
  
 
 
   
   
   
 
    
 
 
 
  
   
   
   
   
 
    
 
 
 
  
   
   
   
   
 
  
 
 
 
  
 
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
 
    
 
 
 
  
   
   
   
   
  
 
 
 
  
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
   
   
   
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Operating Company (e)

Name of Plan:

Generation

ComEd

PECO

BGE

BSC

PHI

Pepco

DPL

ACE

Other Postretirement Benefit Plans:

PECO Energy Company Retiree Medical Plan (a)

Exelon Corporation Health Care Program (a)
Exelon Corporation Employees’ Life Insurance Plan
(a)
Exelon Corporation Health Reimbursement
Arrangement Plan (a)
Constellation Energy Group, Inc. Retiree Medical Plan
(b)
Constellation Energy Group, Inc. Retiree Dental Plan
(b)
Constellation Energy Group, Inc. Employee Life
Insurance Plan and Family Life Insurance Plan (b)
Constellation Mystic Power, LLC
Post-Employment Medical Account Savings Plan (b)
Exelon New England Union Post-Employment Medical
Savings Account Plan (a)
Retiree Medical Plan of Constellation Energy Nuclear
Group LLC (c)
Retiree Dental Plan of Constellation Energy Nuclear
Group LLC (c)
Nine Mile Point Nuclear Station, LLC Medical Care
and Prescription Drug Plan for Retired Employees (c)

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

Pepco Holdings LLC Welfare Plan for Retirees (d)
______________________
(a) These plans are collectively referred to as the legacy Exelon plans.
(b) These plans are collectively referred to as the legacy Constellation Energy Group (CEG) Plans.
(c) These plans are collectively referred to as the legacy CENG plans.
(d) These plans are collectively referred to as the legacy PHI plans.
(e) Employees generally remain in their legacy benefit plans when transferring between operating companies.

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

Exelon’s traditional and cash balance pension plans are intended to be tax-qualified defined benefit plans. Exelon has elected that the trusts underlying these
plans be treated as qualified trusts under the IRC. If certain conditions are met, Exelon can deduct payments made to the qualified trusts, subject to certain IRC
limitations.

Benefit Obligations, Plan Assets and Funded Status

Exelon recognizes the overfunded or underfunded status of defined benefit pension and OPEB plans as an asset or liability on its balance sheet, with offsetting
entries to AOCI and regulatory assets (liabilities), in accordance with the applicable authoritative guidance. The measurement date for the plans is December 31.

During  the  first  quarter  of  2018,  Exelon  received  an  updated  valuation  of  its  pension  and  OPEB  to  reflect  actual  census  data  as  of  January  1,  2018.  This
valuation  resulted  in  an  increase  to  the  pension  and  OPEB  obligations  of  $23  million  and  $14  million,  respectively.  Additionally,  accumulated  other
comprehensive loss decreased by $18 million (after-tax) and regulatory assets and liabilities increased by $61 million and $1 million, respectively.

395

 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
   
   
   
   
 
  
 
  
 
 
 
 
 
 
  
  
 
 
 
 
   
 
 
  
  
  
 
   
   
   
   
 
  
  
  
 
   
   
   
   
 
  
 
 
  
   
   
   
   
 
    
 
 
 
  
   
   
   
   
 
  
 
 
  
   
   
   
   
 
    
 
 
 
 
 
 
   
   
   
   
 
    
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

In connection with the acquisition of FitzPatrick in 2017, Exelon recorded pension and OPEB obligations for FitzPatrick employees of $16 million and $17 million
, respectively. See Note 5 — Mergers, Acquisitions and Dispositions for additional information of the acquisition of FitzPatrick.

The following tables provide a rollforward of the changes in the benefit obligations and plan assets for the most recent two years for all plans combined:

Exelon

Change in benefit obligation:

Pension Benefits

Other
Postretirement Benefits

2018

2017

2018

2017

Net benefit obligation at beginning of year

$

22,337   $

21,060   $

4,856   $

4,457

Service cost

Interest cost

Plan participants’ contributions

Actuarial (gain) loss (a)

Plan amendments

Acquisitions (b)

Settlements

Gross benefits paid

Net benefit obligation at end of year

Exelon

Change in plan assets:

Fair value of net plan assets at beginning of year

Actual return on plan assets

Employer contributions

Plan participants’ contributions

Gross benefits paid

Settlements

Fair value of net plan assets at end of year

405  

802  

—  

(1,561)  

(4)  

—  

(48)  

387

842

—  

1,182  

9  

16  

(34)

112  

175  

45  

(540)  

—  

—  

(4)  

(1,239)  

20,692   $

(1,125)

22,337   $

(275)  

4,369   $

Pension Benefits

Other
Postretirement Benefits

2018

2017

2018

2017

18,573   $

16,791   $

2,732   $

(945)  

337

—  

(1,239)

(48)

2,600  

341

—  

(1,125)

(34)

(136)  

46

45  

(275)

(4)

16,678   $

18,573   $

2,408   $

106

182

53

350

—

17

—

(309)

4,856

2,578

346

64

53

(309)

—

2,732

$

$

$

__________
(a) The pension actuarial gain in 2018 primarily reflects an increase in the discount rate. The OPEB actuarial gain in 2018 primarily reflects an increase in the discount rate

and favorable health care claims experience. The pension and OPEB actuarial losses in 2017 primarily reflect a decrease in the discount rate.

(b) Exelon recorded pension and OPEB obligations associated with its acquisition of Fitzpatrick on March 31, 2017.

Exelon presents its benefit obligations and plan assets net on its balance sheet within the following line items:

Exelon
Other current liabilities

Pension obligations

Non-pension postretirement benefit obligations

Unfunded status (net benefit obligation less plan assets)

Pension Benefits

Other
Postretirement Benefits

2018

2017

2018

2017

$

$

26   $

3,988

—  

4,014

$

396

28   $

3,736

—  

3,764

$

33   $

—

1,928

1,961

$

31

—

2,093

2,124

 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
   
   
   
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The funded status of the pension and other postretirement benefit obligations refers to the difference between plan assets and estimated obligations of the plan.
The funded status changes over time due to several factors, including contribution levels, assumed discount rates and actual returns on plan assets.

The following tables provide the projected benefit obligations (PBO), accumulated benefit obligation (ABO), and fair value of plan assets for all pension plans
with a PBO or ABO in excess of plan assets. 

PBO in excess of plan assets

Projected benefit obligation

Fair value of net plan assets

ABO in excess of plan assets

Projected benefit obligation

Accumulated benefit obligation

Fair value of net plan assets

$

$

Exelon

2018

2017

20,692   $

16,678  

Exelon

2018

2017

20,692   $

19,656  

16,678  

22,337

18,573

22,337

21,153

18,573

On  a  PBO  basis,  the  Exelon  plans  were  funded  at  81% and 83% at December  31,  2018  and 2017 ,  respectively.  On  an  ABO  basis,  the  Exelon  plans  were
funded at 85% and 88% at December 31, 2018 and 2017 , respectively. The ABO differs from the PBO in that the ABO includes no assumption about future
compensation levels.

Components of Net Periodic Benefit Costs

The majority of the 2018 pension benefit cost for the Exelon-sponsored plans is calculated using an expected long-term rate of return on plan assets of 7.00%
and a discount rate of 3.62% . The majority of the 2018 other postretirement benefit cost is calculated using an expected long-term rate of return on plan assets
of 6.60% for funded plans and a discount rate of 3.61% .

A  portion  of  the  net  periodic  benefit  cost  for  all  plans  is  capitalized  within  the  Consolidated  Balance  Sheets.  The  following  tables  present  the  components  of
Exelon’s net periodic benefit costs, prior to capitalization, for the years ended December 31, 2018 , 2017 and 2016 and PHI's net periodic benefit costs, prior to
capitalization, for the predecessor period of January 1, 2016 to March 23, 2016 .

Exelon
Components of net periodic
benefit cost:

Service cost

Interest cost

Expected return on assets

Amortization of:

Prior service cost (credit)

Actuarial loss

Settlement and other charges (c)

Net periodic benefit cost

$

$

Pension Benefits

Other
Postretirement Benefits

2018

2017 (a)

2016 (b)

2018

2017 (a)

2016 (b)

$

405

802

$

387

842

$

354

830

(1,252)  

(1,196)  

(1,141)  

2  

629  

3  

1  

607  

3  

14  

554  

2  

$

112

175

(173)  

(186)  

66  

1  

$

106

182

(162)  

(188)  

61  

—  

589   $

644   $

613   $

(5)   $

(1)   $

107

185

(162)

(185)

63

—

8

__________ 
(a) FitzPatrick net benefit costs are included for the period after acquisition.
(b) PHI net periodic benefit costs for the period prior to the merger are not included in the table above.
(c) 2016 amount includes an additional termination benefit for PHI.

397

 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
 
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

PHI

Components of net periodic benefit cost:

Service cost

Interest cost

Expected return on assets

Amortization of:

Prior service cost (credit)

Actuarial loss

Net periodic benefit cost

Components of AOCI and Regulatory Assets

Pension Benefits

Other 
Postretirement Benefits

Predecessor

January 1, 2016 to March 23, 2016

January 1, 2016 to March 23, 2016

$

$

12   $

26  

(30)  

—  

14  

22   $

1

6

(5)

(3)

2

1

Under  the  authoritative  guidance  for  regulatory  accounting,  a  portion  of  current  year  actuarial  gains and  losses  and  prior  service  costs (credits)  is capitalized
within Exelon’s Consolidated Balance Sheets to reflect the expected regulatory recovery of these amounts, which would otherwise be recorded to AOCI. The
following  tables  provide  the  components  of  AOCI  and  regulatory  assets  (liabilities)  for  the  years  ended  December  31,  2018  ,  2017  and  2016  for  all  plans
combined and the components of PHI's predecessor AOCI and regulatory assets (liabilities) for the period January 1, 2016 to March 23, 2016 .

Exelon

Changes in plan assets and
benefit obligations recognized in
AOCI and regulatory assets
(liabilities):

Current year actuarial (gain) loss

$

Amortization of actuarial loss

Current year prior service cost
(credit)

Amortization of prior service (cost)
credit

Settlements

Acquisitions

Total recognized in AOCI and
regulatory assets (liabilities)

Total recognized in AOCI

Total recognized in regulatory
assets (liabilities)

$

$

$

Pension Benefits

Other
Postretirement Benefits

2018

2017

2016 (a)

2018

2017

2016 (a)

635   $

(629)  

(222)   $

(607)  

644   $

(554)  

(232)   $

(66)  

(4)  

(2)  

(3)  

—  

9  

(1)  

(3)  

—  

(60)  

(14)  

—  

994  

—  

186  

—  

—  

166   $

(61)  

—  

188  

—  

—  

(3)

$

(824)   $

1,010   $

(112)

$

293   $

3   $

(401)   $

51   $

(55)   $

168   $

(6)   $

(423)   $

959   $

(57)   $

125   $

398

(101)

(63)

—

185

—

94

115

20

95

 
 
 
 
 
   
 
   
 
 
 
 
 
 
 
 
   
   
   
   
   
 
 
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

PHI
Changes in plan assets and benefit 
obligations recognized in AOCI and regulatory assets (liabilities):

Current year actuarial loss (gain)

Amortization of actuarial loss

Amortization of prior service (cost) credit

Total recognized in AOCI and regulatory assets (liabilities) 

Total recognized in AOCI

$

$

$

Total recognized in regulatory assets (liabilities)
__________ 
(a) 2016 amounts include PHI for the period of March 24, 2016 through December 31, 2016.

$

Pension Benefits

Other 
Postretirement Benefits

Predecessor

January 1, 2016 to March 23, 2016

January 1, 2016 to March 23, 2016

—   $

(14)  

—  

(14)   $

(1)   $

(13)   $

—

(2)

3

1

—

1

The following table provides the components of gross accumulated other comprehensive loss and regulatory assets (liabilities) that have not been recognized as
components of periodic benefit cost at December 31, 2018 and 2017 , respectively, for all plans combined:

Prior service (credit) cost

Actuarial loss

Total

Total included in AOCI

Total included in regulatory assets (liabilities)

Average Remaining Service Period

Exelon

Pension Benefits

Exelon

Other
Postretirement Benefits

2018

2017

2018

2017

$

$

$

$

(29)

$

7,558  

7,529   $

3,899   $

3,630   $

(24)     $

7,556    

7,532     $

3,896     $

3,636     $

(337)   $

531  

194   $

70   $

124   $

(522)

829

307

125

182

For pension benefits, Exelon amortizes its unrecognized prior service costs and certain actuarial gains and losses, as applicable, based on participants’ average
remaining  service  periods.  The  average  remaining  service  period  of  Exelon's  defined  benefit  pension  plan  participants  was  12.0 years, 11.8 years and 11.9
years for the years ended December 31, 2018 , 2017 and 2016 , respectively.

For other postretirement benefits, Exelon amortizes its unrecognized prior service costs over participants’ average remaining service period to benefit eligibility
age and amortizes certain actuarial gains and losses over participants’ average remaining service period to expected retirement. The average remaining service
period of postretirement benefit plan participants related to benefit eligibility age was 8.8 years, 8.8 years and 9.0 years for the years ended December 31, 2018
, 2017 and 2016 , respectively. The average remaining service period of postretirement benefit plan participants related to expected retirement was 9.5 years,
9.6 years and 9.7 years for the years ended December 31, 2018 , 2017 and 2016 , respectively.

Assumptions

399

 
 
 
 
 
   
 
 
   
 
   
 
   
 
 
   
 
 
 
   
     
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The measurement of the plan obligations and costs of providing benefits under Exelon’s defined benefit and other postretirement plans involves various factors,
including the development of valuation assumptions and inputs and accounting policy elections. The measurement of benefit obligations and costs is impacted
by several assumptions and inputs, including the discount rate applied to benefit obligations, the long-term EROA, Exelon’s expected level of contributions to the
plans, the long-term expected investment rate credited to employees participating in cash balance plans and the anticipated rate of increase of health care costs.
Additionally, assumptions related to plan participants include the incidence of mortality, the expected remaining service period, the level of compensation and
rate  of  compensation  increases,  employee  age  and  length  of  service,  among  other  factors.  When  developing  the  required  assumptions,  Exelon  considers
historical information as well as future expectations.

Expected Rate of Return. In selecting the EROA, Exelon considers historical economic indicators (including inflation and GDP growth) that impact asset returns,
as well as expectations regarding future long-term capital market performance, weighted by Exelon’s target asset class allocations.

Mortality .  The  mortality  assumption  is  composed  of  a  base  table  that  represents  the  current  expectation  of  life  expectancy  of  the  population  adjusted  by  an
improvement  scale  that  attempts  to  anticipate  future  improvements  in  life  expectancy.  Exelon’s  mortality  assumption  is  supported  by  an  actuarial  experience
study  of  Exelon's  plan  participants  and  utilizes  the  IRS's  RP–2000  base  table  projected  to  2012  with  improvement  scale  AA  and  projected  thereafter  with
generational improvement scale BB two-dimensional adjusted to a 0.75% long-term rate reached in 2027. There were no changes to the mortality assumption in
2016 , 2017 or 2018 .

The following assumptions were used to determine the benefit obligations for the plans at December 31, 2018 , 2017 and 2016 . Assumptions used to determine
year-end benefit obligations are the assumptions used to estimate the subsequent year’s net periodic benefit costs.

Exelon

Discount rate

Investment Crediting
Rate
Rate of compensation
increase

Mortality table

Pension Benefits

Other Postretirement Benefits

2018

2017

2016 (f)

2018

2017

2016 (f)

4.31% (a)   

3.62% (b)   

4.04%

(c)  

4.30% (a)   

3.61% (b)   

4.04%

(c)  

4.46%  

4.00%  

4.46%  

N/A

N/A

N/A

(d)  

(d)      

(e)         

(d)   

(d)   

(e)   

RP-2000 table projected
to 2012 with
improvement scale AA,
with Scale BB-2D
improvements
(adjusted)

RP-2000 table
projected to 2012 with
improvement scale
AA, with Scale BB-2D
improvements
(adjusted) 

RP-2000 table
projected to 2012 with
improvement scale
AA, with Scale BB-2D
improvements
(adjusted) 

RP-2000 table
projected to 2012
with improvement
scale AA, with Scale
BB-2D
improvements
(adjusted) 

RP-2000 table
projected to 2012
with improvement
scale AA, with
Scale BB-2D
improvements
(adjusted) 

RP-2000 table
projected to 2012
with improvement
scale AA, with
Scale BB-2D
improvements
(adjusted) 

N/A

N/A

Health care cost trend
on covered charges
__________
(a) The  discount  rates  above  represent  the  blended  rates  used  to  determine  the  majority  of  Exelon’s  pension  and  other  postretirement  benefits  obligations  as  of
December 31, 2018 . Certain benefit plans used individual rates ranging from 4.13% - 4.36% and 4.27% - 4.38% for pension and other postretirement plans, respectively.
(b) The  discount  rates  above  represent  the  blended  rates  used  to  determine  the  majority  of  Exelon’s  pension  and  other  postretirement  benefits  obligations  as  of
December 31, 2017 . Certain benefit plans used individual rates ranging from 3.49% - 3.65% and 3.57% - 3.68% for pension and other postretirement plans, respectively.
(c) The  discount  rates  above  represent  the  blended  rates  used  to  determine  the  majority  of  Exelon’s  pension  and  other  postretirement  benefits  obligations  as  of
December 31, 2016 . Certain benefit plans used individual rates ranging from 3.66% - 4.11% and 4.00% - 4.17% for pension and other postretirement plans, respectively.

N/A

5.00% with ultimate
trend of 5.00% in
2017

5.00% with 
ultimate 
trend of 
5.00% in 
2017

5.00% 
decreasing 
to 
ultimate 
trend of 
5.00% in 
2017

(d) 3.25% through 2019 and 3.75% thereafter.

400

 
 
 
 
 
 
 
 
 
 
 
 
    
    
    
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(e) The legacy Exelon, CEG and CENG pension and other postretirement plans used a rate of compensation increase of 3.25% through 2019 and 3.75% thereafter, while the

legacy PHI pension and other postretirement plans used a weighted-average rate of compensation increase of 5% for all periods.

(f) Obligation was not remeasured for the PHI predecessor for the period from January 1, 2016, to March 23, 2016.

The following assumptions were used to determine the net periodic benefit costs for the plans for the years ended December 31, 2018 , 2017 and 2016 , as well
as for the PHI predecessor period January 1, 2016 to March 23, 2016 : 

Exelon

Discount rate

Investment
Crediting Rate

Expected return on
plan assets

Rate of
compensation
increase

2018

3.62% (a)  

4.00%  

Pension Benefits

2017

2016

2018

2017

2016

Other Postretirement Benefits

4.04% (b)  

4.29% (c)   

3.61% (a)  

4.04% (b)  

4.29% (c)   

4.46%  

5.31%  

N/A

N/A

N/A

7.00% (d)  

7.00% (d)  

7.00% (d)  

6.60% (d)  

6.58% (d)  

6.71% (d)  

(e)   

(f)   

(f)  

(e)   

(f)   

(f)   

RP-2000 table projected
to 2012 with
improvement scale AA,
with Scale BB-2D
improvements (adjusted)

RP-2000 table projected
to 2012 with
improvement scale AA,
with Scale BB-2D
improvements (adjusted)

Mortality table

RP-2000 table
projected to 2012 with
improvement scale AA,
with Scale BB-2D
improvements
(adjusted) 

RP-2000 table projected
to 2012 with
improvement scale AA,
with Scale BB-2D
improvements (adjusted)

RP-2000 table projected
to 2012 with
improvement scale AA,
with Scale BB-2D
improvements (adjusted) 

RP-2000 table projected
to 2012 with
improvement scale AA,
with Scale BB-2D
improvements (adjusted) 

Health care cost
trend on covered
charges

N/A

N/A

N/A

PHI

Discount rate

Investment crediting rate

Expected return on plan assets (h)
Rate of compensation 
increase

Mortality table

5.00%
with
ultimate
trend of
5.00% in
2017

5.00% 
with 
ultimate 
trend of 
5.00% in 
2017

Predecessor

5.50% 
decreasing 
to 
ultimate 
trend of 
5.00% in 
2017

Pension Benefits

Other Postretirement Benefits

January 1, 2016 to March 23, 2016

January 1, 2016 to March 23, 2016

4.65%/4.55% (g)  

2.89%  

6.50%  

5.00%  

4.55%

N/A

6.75%

5.00%

RP-2014 table with improvement
scale MP-2015

RP-2014 table with improvement
scale MP-2015

Health care cost trend on covered charges

N/A

6.33% pre-65 and 5.40% post-65
decreasing to ultimate trend of
5.00% in 2020

__________
(a) The  discount  rates  above  represent  the  blended  rates  used  to  establish  the  majority  of  Exelon’s  pension  and  other  postretirement  benefits  costs  for  the  year  ended
December 31, 2018 . Certain benefit plans used individual rates ranging from 3.49% - 3.65% and 3.57% - 3.68% for pension and other postretirement plans, respectively.
(b) The  discount  rates  above  represent  the  blended  rates  used  to  establish  the  majority  of  Exelon's  pension  and  other  postretirement  benefits  costs  for  the  year  ended
December 31, 2017 . Certain benefit plans used individual rates ranging from 3.66% - 4.11% and 4.00% - 4.17% for pension and other postretirement plans, respectively.
(c) The  discount  rates  above  represent  the  blended  rates  used  to  establish  the  majority  of  Exelon’s  pension  and  other  postretirement  benefits  costs  for  the  year  ended
December  31,  2016  .  Certain  benefit  plans  used  the  individual  rates  ranging  from  3.68%  -  4.14%  and  4.32%  -  4.43%  for  pension  and  other  postretirement  plans,
respectively.

401

 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
    
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(d) Not applicable to pension and other postretirement benefit plans that do not have plan assets.
(e) 3.25% through 2019 and 3.75% thereafter.
(f)

The legacy Exelon, CEG and CENG pension and other postretirement plans used a rate of compensation increase of 3.25% through 2019 and 3.75% thereafter, while the
legacy PHI pension and other postretirement plans used a weighted-average rate of compensation increase of 5% for all periods.

(g) The discount rate for the qualified and non-qualified pension plans was 4.65% and 4.55% , respectively.
(h) Expected return on other postretirement benefit plan assets is pre-tax.

Contributions

The following tables provide contributions to the pension and other postretirement benefit plans:

Exelon

Generation

ComEd

PECO

BGE
BSC (b)

Pepco

DPL

ACE

PHISCO (c)

Pension Benefits

Other Postretirement Benefits

2018 (a)

2017 (a)

2016 (a)

2018

2017

2016

$

337

$

128  

341

$

137  

347

$

140  

38  

28  

40  

41  

6  

—  

6  

50  

36  

24  

39  

38  

62  

—  

—  

5  

33  

30  

31  

39  

24  

22  

15  

17  

46

$

64

$

11  

4  

—  

14  

5  

11  

—  

—  

1  

11  

5  

—  

14  

2  

10  

2  

20  

—  

50

12

5

—

18

3

8

—

2

2

Pension Benefits

Successor

    Predecessor

Other Postretirement Benefits

Successor

    Predecessor

2018

2017

March 24, 2016 to
December 31, 2016    

January 1, 2016 to March
23, 2016

2018

2017

March 24, 2016 to
December 31, 2016

January 1, 2016 to March
23, 2016

62   $

67   $

$

PHI
__________
(a) Exelon's  and  Generation's  pension  contributions  include  $21  million  and $25  million  related  to  the  legacy  CENG  plans  that  was  funded  by  CENG  as  provided  in  an
Employee Matters Agreement (EMA) between Exelon and CENG for the years ended December 31, 2017 and 2016 , respectively. There were no pension contributions
for the year ended December 31, 2018 .
Includes  $2  million  , $4  million  ,  and  $6  million  of  pension  contributions  funded  by  Exelon  Corporate,  for  the  years  ended  December  31,  2018  , 2017 ,  and  2016 ,
respectively.

(b)

—

4   $

12   $

32   $

74     $

12     $

(c) PHISCO’s  pension  contributions  for  the  year  ended  December  31,  2016  include  $4  million  of  contributions  made  prior  to  the  closing  of  Exelon’s  merger  with  PHI  on

March 23, 2016 .

Management  considers  various  factors  when  making  pension  funding  decisions,  including  actuarially  determined  minimum  contribution  requirements  under
ERISA,  contributions  required  to  avoid  benefit  restrictions  and  at-risk  status  as  defined  by  the  Pension  Protection  Act  of  2006  (the  Act),  management  of  the
pension obligation and regulatory implications. The Act requires the attainment of certain funding levels to avoid benefit restrictions (such as an inability to pay
lump  sums  or  to  accrue  benefits  prospectively),  and  at-risk  status  (which  triggers  higher  minimum  contribution  requirements  and  participant  notification).  The
projected contributions below reflect a funding strategy of contributing the greater of (1) $300 million until all the qualified plans are fully funded on an ABO basis,
and  (2)  the  minimum  amounts  under  ERISA  to  meet  minimum  contribution  requirement  and/or  avoid  benefit  restrictions  and  at-risk  status.  This  level  funding
strategy helps minimize volatility of future period required pension contributions. Unlike the qualified pension plans, Exelon’s non-qualified pension plans are not
funded, given that they are not subject to statutory minimum contribution requirements.

While other postretirement plans are also not subject to statutory minimum contribution requirements, Exelon does fund certain of its plans. For Exelon's funded
OPEB plans, contributions generally equal accounting costs, however,

402

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon’s  management  has  historically  considered  several  factors  in  determining  the  level  of  contributions  to  its  other  postretirement  benefit  plans,  including
liabilities  management,  levels  of  benefit  claims  paid  and  regulatory  implications  (amounts  deemed  prudent  to  meet  regulatory  expectations  and  best  assure
continued rate recovery). The amounts below include benefit payments related to unfunded plans.

The following table provides all registrants' planned contributions to the qualified pension plans, planned benefit payments to non-qualified pension plans, and
planned contributions to other postretirement plans in 2019:

Exelon

Generation

ComEd

PECO

BGE

BSC

PHI

Pepco

DPL

ACE

PHISCO

Qualified Pension Plans

Non-Qualified Pension Plans

Other 
Postretirement 
Benefits

$

$

301

135

65

25

34

41

1

—

—

—

1

25

$

7

1

1

1

7

8

2

1

—

5

44

13

2

—

15

2

12

10

—

1

1

Estimated Future Benefit Payments

Estimated future benefit payments to participants in all of the pension plans and postretirement benefit plans at December 31, 2018 were:

2019

2020

2021

2022

2023

2024 through 2028

Total estimated future benefit payments through 2028

Allocation to Exelon Subsidiaries

Pension
Benefits

Other
Postretirement
Benefits

$

$

1,196   $

1,221  

1,258  

1,284  

1,302  

6,770  

13,031

$

255

263

269

274

282

1,483

2,826

All registrants account for their participation in Exelon’s pension and other postretirement benefit plans by applying multi-employer accounting. Employee-related
assets and liabilities, including both pension and postretirement liabilities, for the legacy Exelon plans were allocated by Exelon to its subsidiaries based on the
number of active  employees as of January 1, 2001  as part of Exelon’s corporate  restructuring.  The obligation for Generation,  ComEd and  PECO reflects the
initial allocation and the cumulative costs incurred and contributions made since January 1, 2001. Historically, Exelon has allocated the components of pension
and  other  postretirement  costs  to  the  subsidiaries  in  the  legacy  Exelon  plans  based  upon  several  factors,  including  the  measures  of  active  employee
participation  in  each  plan.  Pension  and  other  postretirement  benefit  contributions  were  allocated  to  legacy  Exelon  subsidiaries  in  proportion  to  active  service
costs  recognized  and  total  costs  recognized,  respectively.  Beginning  in  2015,  Exelon  began  allocating  costs  related  to  its  legacy  Exelon  pension  and  other
postretirement benefit plans to its subsidiaries based on both active and retired employee participation and contributions are allocated based on accounting cost.
The impact of this allocation methodology change was not material to any Registrant. For legacy CEG, legacy

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

CENG, FitzPatrick, and legacy PHI plans, components of pension and other postretirement benefit costs and contributions have been, and will continue to be,
allocated to the subsidiaries based on employee participation (both active and retired).

The  amounts  below  represent  the  Registrants’  as  well  as  BSC's  and  PHISCO's  pension  and  OPEB  costs.  As  a  result  of  new  pension  guidance  effective  on
January 1, 2018, certain balances have been reclassified on Exelon’s Consolidated Statements of Operations and Comprehensive Income for the years ended
December 31, 2017 and 2016. For Exelon, the service cost component is included in Operating and maintenance expense and Property, plant and equipment,
net, for the years ended December 31, 2018, 2017 and 2016, while the non–service cost components are included in Other, net and Regulatory assets for year
ended December 31, 2018 and in Other, net and Property, plant and equipment, net, for the years ended December 31, 2017 and 2016. For Generation and the
Utility Registrants, the service cost and non–service cost components are included in Operating and maintenance expense and Property, plant and equipment,
net on their consolidated financial statements for the years ended December 31, 2018 , 2017 and 2016 .

For the Years Ended
December 31,

2018

2017

2016

Exelon

Generation (a)

ComEd

PECO

BGE

BSC (b)

Pepco (c)

DPL (c)

ACE (c)

PHISCO (c)(d)

$

583   $

643  

621  

$

204

227

218

177

176

166

$

18   $

60   $

57   $

15   $

6   $

12   $

29  

33  

64  

68  

53  

48  

25  

31  

13  

18  

13  

15  

34

43

47

PHI
Pension and Other Postretirement Benefit Costs

Successor

Predecessor

For the Year Ended
December 31, 2018

For the Year Ended
December 31, 2017

March 24, 2016 to
December 31, 2016

January 1, 2016 to March 23,
2016

$

67   $

94   $

88     $

23

__________
(a) FitzPatrick net benefit costs are included for the period after acquisition.
(b) These amounts primarily represent amounts billed to Exelon’s subsidiaries through intercompany allocations. These amounts are not included in the Generation, ComEd,

PECO, BGE, PHI, Pepco, DPL or ACE amounts above.

(c) Pepco's, DPL's, ACE's and PHISCO's pension and postretirement benefit costs for the year ended December 31, 2016 include $7 million , $4 million , $3 million and $9

million , respectively, of costs incurred prior to the closing of Exelon’s merger with PHI on March 23, 2016 .

(d) These amounts  represent  amounts  billed to Pepco,  DPL and  ACE through  intercompany  allocations.  These amounts  are not  included  in Pepco,  DPL or ACE amounts

above.

Plan Assets

Investment Strategy. On a regular basis, Exelon evaluates its investment strategy to ensure that plan assets will be sufficient to pay plan benefits when due. As
part of this ongoing evaluation, Exelon may make changes to its targeted asset allocation and investment strategy.

Exelon has developed and implemented a liability hedging investment strategy for its qualified pension plans that has reduced the volatility of its pension assets
relative  to its pension  liabilities.  Exelon is likely to continue  to gradually  increase  the liability hedging  portfolio  as the funded  status  of its plans improves.  The
overall objective is to achieve attractive risk-adjusted returns that will balance the liquidity requirements of the plans’ liabilities while striving to minimize the risk
of significant losses. Trust assets for Exelon’s other postretirement plans are managed in a diversified investment strategy that prioritizes maximizing liquidity
and returns while minimizing asset volatility.

Actual asset returns have an impact on the costs reported for the Exelon-sponsored pension and other postretirement benefit plans. The actual asset returns
across Exelon’s pension and other postretirement benefit plans for the year ended December 31, 2018 were (4.86)% and (4.66)% , respectively, compared to an
expected long-term return assumption of 7.00% and 6.60% , respectively.

Exelon used an EROA of 7.00% and 6.67% to estimate its 2019 pension and other postretirement benefit costs, respectively.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon’s pension and other postretirement benefit plan target asset allocations at December 31, 2018 and 2017 asset allocations were as follows:

Pension Plans 

Asset Category
Equity securities

Fixed income securities

Alternative investments (a)
Total

Other Postretirement Benefit Plans

Asset Category
Equity securities

Fixed income securities

Alternative investments (a)
Total

Exelon

Percentage of Plan Assets
at December 31,

Target Allocation

2018

2017

35%

37%

28%

32%  

38

30

100%  

Exelon

Percentage of Plan Assets
at December 31,

Target Allocation

2018

2017

47%

28%

25%

44%  

28

28

100%  

35%

39

26

100%

47%

28

25

100%

__________
(a) Alternative investments include private equity, hedge funds, real estate, and private credit.

Concentrations of Credit Risk. Exelon evaluated its pension and other postretirement benefit plans’ asset portfolios for the existence of significant concentrations
of credit risk as of December 31, 2018 . Types of concentrations that were evaluated include, but are not limited to, investment concentrations in a single entity,
type of industry, foreign country, and individual fund. As of December 31, 2018 , there were no significant concentrations (defined as greater than 10% of plan
assets) of risk in Exelon’s pension and other postretirement benefit plan assets.

405

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Fair Value Measurements

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables present pension and other postretirement benefit plan assets measured and recorded at fair value in the Registrants' Consolidated Balance
Sheets on a recurring basis and their level within the fair value hierarchy at December 31, 2018 and 2017 :

Exelon  

December 31, 2018 (a)

Pension plan assets

Cash equivalents

Equities (c)

Fixed income:

U.S. Treasury and agencies

State and municipal debt

Corporate debt

Other (c)

Fixed income subtotal

Private equity

Hedge funds

Real estate

Private credit

Level 1

Level 2

Level 3

  Not subject to leveling  

Total

$

350   $

3,364  

—   $

—  

—   $

2  

—   $

1,980  

996  

—  

—  

—  

996

—  

—  

—  

—  

173  

59  

3,716  

329  

4,277

—  

—  

—  

—  

—  

—  

216  

—  

216  

—  

—  

—  

268  

486   $

350

5,346

1,169

59

3,932

942

6,102

1,219

1,608

1,029

1,066

—  

—  

—  

613  

613  

1,219  

1,608  

1,029  

798  

Pension plan assets subtotal

$

4,710

$

4,277

$

7,247   $

16,720

December 31, 2018 (a)

Other postretirement benefit plan assets

Cash equivalents

Equities

Fixed income:

U.S. Treasury and agencies

State and municipal debt

Corporate debt

Other

Fixed income subtotal

Hedge funds

Real estate

Private credit

Level 1

Level 2

Level 3

  Not subject to leveling  

Total

$

22   $

537  

—   $

2  

—   $

—  

—   $

508  

22

1,047

11  

—  

—  

183  

194

—  

—  

—  

56  

126  

48  

72  

302

—  

—  

—  

—  

—  

—  

—  

—

—  

—  

—  

—  

—  

—  

170  

170  

411  

132  

132  

67

126

48

425

666

411

132

132

Other postretirement benefit plan assets subtotal

Total pension and other postretirement benefit plan assets (e)

$

$

753

$

304

$

5,463   $

4,581   $

—   $

486   $

1,353

$

2,410

8,600   $

19,130

406

 
 
 
   
   
   
   
   
 
 
 
 
   
   
   
   
   
 
Table of Contents

December 31, 2017 (a)(b)

Pension plan assets

Cash equivalents

Equities (c)

Fixed income:

U.S. Treasury and agencies

State and municipal debt

Corporate debt

Other (c)

Fixed income subtotal

Private equity

Hedge funds

Real estate

Private credit (d)

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Level 1

Level 2

Level 3

  Not subject to leveling  

Total

—   $

—  

—   $

2  

—   $

3,077  

$

585   $

3,565  

1,150  

—  

—  

—  

1,150

—  

—  

—  

—  

159  

64  

3,931  

447  

4,601

—  

—  

—  

—  

—  

—  

232  

—  

232  

—  

—  

—  

224  

458   $

585

6,644

1,309

64

4,163

1,203

6,739

1,034

1,770

884

919

—  

—  

—  

756  

756  

1,034  

1,770  

884  

695  

Pension plan assets subtotal

$

5,300

$

4,601

$

8,216

$

18,575

December 31, 2017 (a)(b)

Other postretirement benefit plan assets

Cash equivalents

Equities

Fixed income:

U.S. Treasury and agencies

State and municipal debt

Corporate debt

Other

Fixed income subtotal

Hedge funds

Real estate

Private credit

Level 1

Level 2

Level 3

  Not subject to leveling  

Total

$

29   $

523  

—   $

2  

—   $

—  

—   $

764  

29

1,289

13  

—  

—  

225  

238

—  

—  

—  

56  

136  

47  

71  

310

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

185  

185  

430  

124  

123  

69

136

47

481

733

430

124

123

Other postretirement benefit plan assets subtotal

$

790

$

312

$

—   $

1,626   $

2,728

Total pension and other postretirement benefit plan assets (e)
__________
(a) See Note 11 — Fair Value of Financial Assets and Liabilities for a description of levels within the fair value hierarchy.
(b) Effective March 31, 2017, Exelon became sponsor of FitzPatrick's defined benefit pension and other postretirement benefit plans, and assumed FitzPatrick's benefit plan

6,090   $

4,913   $

9,842   $

458   $

21,303

$

(c)

obligations.
Includes derivative instruments of less than $1 million and $6 million , which have a total notional amount of $5,991 million and $3,606 million at December 31, 2018 and
2017 , respectively. The notional principal amounts for these instruments provide one measure of the transaction volume outstanding as of the fiscal years ended and do
not represent the amount of the company’s exposure to credit or market loss.
(d) Prior year amounts reflect a reclassification from Not subject to leveling into Level 3.
(e) Excludes net liabilities of $44 million and net assets of $2 million at December 31, 2018 and 2017 , respectively, which are required to reconcile to the fair value of net plan

assets. These items consist primarily of receivables or payables related to pending securities sales and purchases, interest and dividends receivable.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table presents the reconciliation of Level 3 assets and liabilities measured at fair value for pension and other postretirement benefit plans for the
years ended December 31, 2018 and 2017 :

Exelon

Pension Assets

Balance as of January 1, 2018

Actual return on plan assets:

Relating to assets still held at the 
reporting date

Relating to assets sold during the

period

Purchases, sales and settlements:

Purchases

Sales

Settlements (b)

Balance as of December 31, 2018

Pension Assets

Balance as of January 1, 2017

Actual return on plan assets:

Relating to assets still held at the

reporting date

Purchases, sales and settlements:

Purchases

Sales

      Settlements (b)

Balance as of December 31, 2017

Fixed Income

Equities

Private
Credit

Total

$

232

$

2   $

224   $

458

(14)

(1)

19

(8)

(12)

—  

—  

—  

—  

—  

9  

—  

35  

—  

—  

216

$

2   $

268   $

Fixed income

Equities

Private
Credit (a)

Total

206

$

2   $

229   $

11

31

(16)

—

—  

—  

—  

—  

29  

5  

—  

(39)  

232

$

2

$

224   $

(5)

(1)

54

(8)

(12)

486

437

40

36

(16)

(39)

458

$

$

$

__________
(a) Prior year amounts reflect a reclassification from Not subject to leveling into Level 3.
(b) Represents cash settlements only.

There were no significant transfers between Level 1 and Level 2 during the year ended December 31, 2018 for the pension and other postretirement benefit plan
assets.

Valuation Techniques Used to Determine Fair Value

Cash equivalents. Investments with original maturities of three months or less when purchased, including certain short-term fixed income securities and money
market funds, are considered cash equivalents. The fair values are based on observable market prices and, therefore, are included in the recurring fair value
measurements hierarchy as Level 1.

Equities. Equities consist of individually held equity securities, equity mutual funds and equity commingled funds in domestic and foreign markets. With respect
to  individually  held  equity  securities,  the  trustees  obtain  prices  from  pricing  services,  whose  prices  are  generally  obtained  from  direct  feeds  from  market
exchanges, which Exelon is able to independently corroborate. Equity securities held individually, including real estate investment trusts, rights and warrants, are
primarily traded on exchanges that contain only actively traded securities due to the volume trading requirements imposed by these exchanges. Equity securities
are valued based on quoted prices in active

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

markets and are categorized as Level 1. Certain private placement equity securities are categorized as Level 3 because they are not publicly traded and are
priced using significant unobservable inputs.

Equity commingled funds and mutual funds are maintained by investment companies, and certain investments are held in accordance with a stated set of fund
objectives, which are consistent with the plans’ overall investment strategy. The values of some of these funds are publicly quoted. For mutual funds which are
publicly quoted, the funds are valued based on quoted prices in active markets and have been categorized as Level 1. For equity commingled funds and mutual
funds which are not publicly quoted, the fund administrators value the funds using the NAV per fund share, derived from the quoted prices in active markets of
the  underlying  securities  and  are  not  classified  within  the  fair  value  hierarchy.  These  investments  typically  can  be  redeemed  monthly  with  30  or  less  days  of
notice and without further restrictions.

Fixed  income.  For  fixed  income  securities,  which  consist  primarily  of  corporate  debt  securities,  U.S  government  securities,  foreign  government  securities,
municipal bonds,  asset  and  mortgage-backed  securities,  commingled  funds,  mutual  funds  and  derivative  instruments,  the  trustees  obtain  multiple  prices from
pricing  vendors  whenever  possible,  which  enables  cross-provider  validations  in  addition  to  checks  for  unusual  daily  movements.  A  primary  price  source  is
identified based on asset type, class or issue for each security. With respect to individually held fixed income securities, the trustees monitor prices supplied by
pricing services and may use a supplemental price source or change the primary price source of a given security if the portfolio managers challenge an assigned
price  and  the  trustees  determine  that  another  price  source  is  considered  to  be  preferable.  Exelon  has  obtained  an  understanding  of  how  these  prices  are
derived, including the nature and observability of the inputs used in deriving such prices. Additionally, Exelon selectively corroborates the fair values of securities
by comparison to other market-based price sources. Investments in U.S. Treasury securities have been categorized as Level 1 because they trade in highly-
liquid  and  transparent  markets.  Certain  private  placement  fixed  income  securities  have  been  categorized  as  Level  3  because  they  are  priced  using  certain
significant unobservable inputs and are typically illiquid. The remaining fixed income securities, including certain other fixed income investments, are based on
evaluated prices that reflect observable market information, such as actual trade information of similar securities, adjusted for observable differences and are
categorized as Level 2.

Other fixed income investments primarily consist of fixed income commingled funds and mutual funds, which are maintained by investment companies and hold
certain investments in accordance with a stated set of fund objectives, which are consistent with Exelon’s overall investment strategy. The values of some of
these  funds  are  publicly  quoted.  For  mutual  funds  which  are  publicly  quoted,  the  funds  are  valued  based  on  quoted  prices  in  active  markets  and  have  been
categorized as Level 1. For fixed income commingled funds and mutual funds which are not publicly quoted, the fund administrators value the funds using the
NAV per fund share, derived from the quoted prices in active markets of the underlying securities and are not classified within the fair value hierarchy. These
investments typically can be redeemed monthly with 30 or less days of notice and without further restrictions.

Derivative instruments consisting primarily of futures and swaps to manage risk are recorded at fair value.  Over-the-counter derivatives are valued daily based
on  quoted  prices  in  active  markets  and  trade  in  open  markets,  and  have  been  categorized  as  Level  1.    Derivative  instruments  other  than  over-the-counter
derivatives are valued based on external price data of comparable securities and have been categorized as Level 2.

Private  equity.  Private  equity  investments  include  those  in  limited  partnerships  that  invest  in  operating  companies  that  are  not  publicly  traded  on  a  stock
exchange such as leveraged buyouts, growth capital, venture capital, distressed investments and investments in natural resources. Private equity valuations are
reported by the fund manager and are based on the valuation of the underlying investments, which include unobservable inputs such as cost, operating results,
discounted future cash flows and market based comparable data. The fair value of private equity investments is determined using NAV or its equivalent as a
practical expedient, and therefore, these investments are not classified within the fair value hierarchy.

Hedge funds. Hedge fund investments include those seeking to maximize absolute returns using a broad range of strategies to enhance  returns and provide
additional diversification. The fair value of hedge funds is determined using NAV or its equivalent as a practical expedient, and therefore, hedge funds are not
classified within the fair value hierarchy. Exelon has the ability to redeem these investments at NAV or its equivalent subject to certain restrictions which may
include a lock-up period or a gate.

Real  estate.  Real  estate  funds  are  funds  with  a  direct  investment  in  pools  of  real  estate  properties.  These  funds  are  valued  by  investment  managers  on  a
periodic basis using pricing models that use independent appraisals from

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

sources with professional qualifications. These valuation inputs are not highly observable. The fair value of real estate investments is determined using NAV or
its equivalent as a practical expedient, and therefore, these investments are not classified within the fair value hierarchy.

Private credit. Private credit investments primarily consist of limited partnerships that invest in private debt strategies. These investments are generally less liquid
assets with an underlying term of 3 to 5 years and are intended to be held to maturity.  The fair value of these investments is determined by the fund manager or
administrator and include unobservable inputs such as cost, operating results, and discounted cash flows.  Private credit investments are categorized as Level 3
because they are based largely on inputs that are unobservable and utilize complex valuation models. The fair value of private credit funds are determined using
NAV or its equivalent as a practical expedient, and therefore, these investments are not classified within the fair value hierarchy.

Defined Contribution Savings Plan (All Registrants)

The Registrants participate in various 401(k) defined contribution savings plans that are sponsored by Exelon. The plans are qualified under applicable sections
of the IRC and allow employees to contribute a portion of their pre-tax and/or after-tax income in accordance with specified guidelines. All Registrants match a
percentage  of  the  employee  contributions  up  to  certain  limits.  The  following  table  presents  matching  contributions  to  the  savings  plan  for  the  years  ended
December 31, 2018 , 2017 and 2016 :

For the Year Ended
December 31,

2018

2017

2016

PHI

Exelon (a)

Generation (a)

ComEd

PECO

BGE

BSC (b)

Pepco (c)

DPL (c)

ACE

PHISCO (c)(d)

$

179   $
128  
164  

$

86

55

79

$

37

31

34

$

9

10

10

$

12

10

12

22   $
9  
19  

3   $
3  
3  

2   $
2  
2  

2   $
2  
2  

6

6

6

For the Year Ended
December 31, 2018

For the Year Ended
December 31, 2017

March 24, 2016 to
December 31, 2016

January 1, 2016 to March
23, 2016

Successor

Predecessor

Saving Plan Matching Contributions
__________
(a)
(b) These  amounts  primarily  represent  amounts  billed  to  Exelon’s  subsidiaries  through  intercompany  allocations.  These  costs  are  not  included  in  the  Generation,  ComEd,

Includes $13 million related to CENG for the year ended December 31, 2016.

3

$

10     $

13   $

13   $

PECO, BGE, PHI, Pepco, DPL or ACE amounts above.

(c) Pepco's, DPL's and PHISCO's matching contributions include $1 million , $1 million and $1 million , respectively, of costs incurred prior to the closing of Exelon's merger

with PHI on March 23, 2016, which is not included in Exelon's matching contributions for the year ended December 31, 2016.

(d) These amounts primarily represent amounts billed to Pepco, DPL, and ACE through intercompany allocations. These amounts are not included in Pepco, DPL or ACE

amounts above.

17. Severance (All Registrants)

The  Registrants  have  an  ongoing  severance  plan  under  which,  in  general,  the  longer  an  employee  worked  prior  to  termination  the  greater  the  amount  of
severance  benefits.  The  Registrants  record  a  liability  and  expense  or  regulatory  asset  for  severance  once  terminations  are  probable  of  occurrence  and  the
related  severance  benefits  can  be  reasonably  estimated.  For  severance  benefits  that  are  incremental  to  its  ongoing  severance  plan  (“one-time  termination
benefits”), the Registrants measure the obligation and record the expense at fair value at the communication date if there are no future service requirements, or,
if future service is required to receive the termination benefit, ratably over the required service period.

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Severance Liability

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Amounts included in the table below represent the severance liability recorded for employees of each Registrant. Exelon's severance liability includes amounts
related to BSC that are billed through intercompany allocations .

Severance Liability

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Balance at December 31, 2016

$

Severance costs (a)

Payments

Balance at December 31, 2017

$

Severance costs (a)

Payments

88   $

35  

(29)  

94   $

35  

(52)  

Balance at December 31, 2018

$

77

$

36   $

31  

(9)

58   $

9  

(20)

47

$

__________
(a)

Includes salary continuance and health and welfare severance benefits.

Severance Costs Related to the PHI Merger

3   $

2  

(2)

3   $

1  

(2)

2

—   $

—   $

29   $

—   $

—   $

—  

—  

—  

—  

3  

(12)  

—  

—  

—  

—  

—   $

—   $

20   $

—   $

—   $

—  

—  

1  

—  

5  

(18)  

1  

(1)  

—  

—  

$

— $

1

$

7

$

— $

— $

—

—

—

—

—

—

—

Upon closing the PHI Merger, Exelon recorded a severance accrual for the anticipated employee position reductions as a result of the post-merger integration.
Cash payments under the plan began in May 2016 and will continue through 2020.

For the years ended December 31, 2018 and December 31, 2017 , the PHI Merger severance costs were immaterial. For the year ended December 31, 2016 ,
the  Registrants  recorded  the  following  severance  costs  associated  with  the  identified  job  reductions  within  Operating  and  maintenance  expense  in  their
Consolidated Statements of Operations and Comprehensive Income:

Severance Benefits

Severance costs (a)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

$

57   $

9   $

2   $

1   $

1   $

44   $

21   $

13   $

10

(a) The  amounts  above  for  Generation,  ComEd,  PECO,  BGE,  Pepco,  DPL,  and  ACE  include  $8 million  , $2  million  , $1  million  , $1  million  , $20  million  , $12  million  and  $10  million  ,

respectively, for amounts billed by BSC and/or PHISCO through intercompany allocations.

PHI, Pepco, DPL and ACE recorded regulatory assets for merger related integration costs which include a portion of these severance costs. These regulatory
assets  are  either  currently  being  recovered  in  rates  or  are  deemed  probable  of  recovery  in  future  rates.  See  Note  4  —  Regulatory  Matters  for  additional
information.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

18. Shareholders' Equity (Exelon, ComEd, PECO, BGE, Pepco, DPL and ACE)  

The following table presents common stock authorized and outstanding as of December 31, 2018 and 2017 :

Common Stock

Exelon

ComEd

PECO

BGE

Pepco

DPL

ACE

Par Value

Shares Authorized

Shares Outstanding

December 31,

2018

2017

no par value  

2,000,000,000  

$

$

$

$

12.50  

no par value  

no par value  

0.01  

2.25  

3.00  

250,000,000  

500,000,000  

1,500  

200,000,000  

1,000  

25,000,000  

968,187,955  

127,021,331  

170,478,507  

1,000  

100  

1,000  

963,335,888

127,021,246

170,478,507

1,000

100

1,000

8,546,017  

8,546,017

ComEd had 60,285 and 60,584 warrants outstanding to purchase ComEd common stock at December 31, 2018 and 2017 , respectively. The warrants entitle the
holders to convert such warrants into common stock of ComEd at a conversion rate of one share of common stock for three warrants. At December 31, 2018
and 2017 , 20,095 and 20,195 shares of common stock, respectively, were reserved for the conversion of warrants.

Equity Securities Offering

In June 2014, Exelon marketed an equity offering of 57.5 million shares of its common stock at a public offering price of $35 per share. In connection with such
offering, Exelon entered into forward sale agreements with two counterparties. In July 2015, Exelon settled the forward sale agreement by the issuance of 57.5
million shares of Exelon common stock. Exelon received net cash proceeds of $1.87 billion , which was calculated based on a forward price of $32.48 per share
as  specified  in  the  forward  sale  agreements.  The  net  proceeds  were  used  to  fund  the  merger  with  PHI  and  related  costs  and  expenses,  and  for  general
corporate  purposes.  The  forward  sale  agreements  are  classified  as  equity  transactions.  As  a  result,  no  amounts  were  recorded  in  the  consolidated  financial
statements until the July 2015 settlement of the forward sale agreements. However, prior to the July 2015 settlement, incremental shares, if any, were included
within the calculation of diluted EPS using the treasury stock method.

Concurrent with the forward equity transaction, Exelon also issued $1.15 billion of junior subordinated notes in the form of 23 million equity units. On June 1,
2017, Exelon settled the forward purchase contract, which was a component of the June 2014 equity units, through the issuance of Exelon common stock from
treasury stock. See Note 13 — Debt and Credit Agreements for additional information on the equity units.

Share Repurchases

Share Repurchase Programs

There currently is no Exelon Board of Director authority  to repurchase  shares. Any previous shares  repurchased  are held as treasury shares,  at cost, unless
cancelled or reissued at the discretion of Exelon’s management. Under the previous share repurchase programs, 2 million shares of common stock were held as
treasury stock with a historical cost of $123 million at December 31, 2018 and 2017 . During 2017 , Exelon issued approximately 33 million shares of Exelon
common  stock  from  treasury  stock  in  order  to  settle  the  forward  purchase  contract,  which  was  a  component  of  the  June  2014  equity  units  discussed  above.
During 2018 , 2017 , and 2016 Exelon had no common stock repurchases.

Preferred and Preference Securities of Subsidiaries

At December 31, 2018 and 2017 , Exelon was authorized to issue up to 100,000,000 shares of preferred securities, none of which were outstanding.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

At December 31, 2018 and 2017 , ComEd prior preferred securities and ComEd cumulative preference securities consisted of 850,000 shares and 6,810,451
shares authorized, respectively, none of which were outstanding.

BGE had $190 million of cumulative preference stock that was redeemable at its option at any time after October 1, 2015 for the redemption price of $100 per
share, plus accrued and unpaid dividends. On July 3, 2016, BGE redeemed all 400,000 shares of its outstanding 7.125% Cumulative Preference Stock, 1993
Series and all 600,000 shares of its outstanding 6.990% Cumulative Preference Stock, 1995 Series for $100 million , plus accrued and unpaid dividends. On
September  18, 2016,  BGE redeemed  the remaining  500,000 shares  of  its  outstanding  6.970% Cumulative Preference  Stock,  1993 Series and the  remaining
400,000 shares of its outstanding 6.700% Cumulative Preference Stock, 1993 Series for $90 million , plus accrued and unpaid dividends.

19. Stock-Based Compensation Plans (All Registrants)

Stock-Based Compensation Plans

Exelon  grants  stock-based  awards  through  its  LTIP,  which  primarily  includes  stock  options,  restricted  stock  units  and  performance  share  awards.  At
December 31, 2018 , there were approximately 11 million shares authorized for issuance under the LTIP. For the years ended December 31, 2018 , 2017 and
2016 , exercised and distributed stock-based awards were primarily issued from authorized but unissued common stock shares.

ComEd, PECO, BGE and PHI grant cash awards. The following tables do not include expense related to these plans as they are not considered stock-based
compensation plans under the applicable authoritative guidance .

In connection with the acquisition of PHI in March 2016, PHI’s unvested time-based restricted stock units and performance-based restricted stock units issued
prior to April 29, 2014 were immediately vested and paid in cash upon the close of the merger.  PHI’s remaining unvested time-based restricted stock units as of
the close of the merger were cancelled.  There were no remaining unvested performance-based restricted stock units as of the close of the merger.

For the years ended December 31, 2018 , 2017 and 2016 , there were no significant modifications to the granted stock based awards.

The following tables present the stock-based compensation expense included in Exelon's and PHI’s Consolidated Statements of Operations and Comprehensive
Income for the years ended December 31, 2018 , 2017 and 2016 and PHI's predecessor period January 1, 2016 to March 23, 2016 :

Exelon

Components of Stock-Based Compensation Expense
Performance share awards

Restricted stock units

Stock options

Other stock-based awards

Total stock-based compensation expense included in operating and maintenance
expense

Income tax benefit

Total after-tax stock-based compensation expense

Year Ended
December 31,

2018

2017

2016 (a)

143   $

107   $

57  

—  

8  

208  

(54)  

154   $

77  

—  

7  

191  

(74)  

117   $

93

75

—

7

175

(68)

107

$

$

__________
(a) 2016 amounts include expense related to stock-based compensation granted to eligible PHI employees since the merger date of March 23, 2016 .

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PHI

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Components of Stock-Based Compensation Expense
Time-based restricted stock units

Performance-based restricted stock units

Time-based restricted stock awards

Total stock-based compensation expense included in operating and

maintenance expense

Income tax benefit

Total after-tax stock-based compensation expense

Predecessor

January 1 to March 23,

2016

2

1

—

3

(1)

2

$

$

The following tables present the Registrants' stock-based compensation expense (pre-tax) for the years ended December 31, 2018 , 2017 and 2016 , as well as
for the PHI predecessor period January 1, 2016 to March 23, 2016 :

Subsidiaries
Exelon

Generation

ComEd

PECO

BGE

BSC (a)
PHI Successor (b)(c)

Year Ended
December 31,

2018

2017

2016

$

208   $

191   $

77  

8  

5  

3  

111  

4  

88  

7  

3  

1  

88  

4  

Predecessor

January 1 to 
March 23,

2016

175

78

8

3

1

81

4

PHI
__________
(a) These amounts primarily represent amounts billed to Exelon’s subsidiaries through intercompany allocations. These amounts are not included in the Generation, ComEd,

3

$

PECO, BGE or PHI amounts above.

(b) Pepco's, DPL's and ACE's stock-based compensation expense for the years ended December 31, 2018 and 2017 was not material.
(c) These amounts primarily represent amounts billed to PHI’s subsidiaries through PHISCO intercompany allocations.

There were no significant stock-based compensation costs capitalized during the years ended December 31, 2018 , 2017 and 2016 for Exelon or PHI, or for PHI
during the predecessor period January 1, 2016 to March 23, 2016 .

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon receives a tax deduction based on the intrinsic value of the award on the exercise date for stock options and the distribution date for performance share
awards and restricted stock units. For each award, throughout the requisite service period, Exelon recognizes the tax benefit related to compensation costs. The
following tables present information regarding Exelon’s tax benefits for the years ended December 31, 2018 , 2017 and 2016 .

Exelon

Realized tax benefit when exercised/distributed:

Restricted stock units

Performance share awards

Stock Options

Year Ended December 31,

2018

2017

2016

28  

16  

35  

29  

27

18

Non-qualified stock options to purchase shares of Exelon’s common stock were granted under the LTIP through 2012. Due to changes in the LTIP, there were
no stock options granted in 2018 , 2017 and 2016 . For all stock options granted through 2012, the exercise price of the stock options is equal to the fair market
value of the underlying stock on the date of option grant. The vesting period of stock options is generally four years and all stock options will expire no later than
ten years from the date of grant.

The value of stock options at the date of grant is expensed over the requisite service period using the straight-line method. The requisite service period for stock
options is generally four years . However, certain stock options become fully vested upon the employee reaching retirement-eligibility. The value of the stock
options  granted  to  retirement-eligible  employees  is  either  recognized  immediately  upon  the  date  of  grant  or  through  the  date  at  which  the  employee  reaches
retirement eligibility.

The following table presents information with respect to stock option activity for the year ended December 31, 2018 :

Balance of shares outstanding at December 31, 2017

Options exercised

Options forfeited

Options expired

Balance of shares outstanding at December 31, 2018

Exercisable at December 31, 2018 (a)

__________
(a)

Includes stock options issued to retirement eligible employees.

Weighted
Average
Exercise
Price
(per share)

Weighted
Average
Remaining
Contractual
Life
(years)

Aggregate
Intrinsic
Value

47.69  

36.54    

—    

74.99    

43.95  

43.95  

2.65   $

2.90   $

2.90   $

Shares

6,723,611   $

(1,522,952)  

—  

(1,173,007)  

4,027,652   $

4,027,652   $

The following table summarizes additional information regarding stock options exercised for the years ended December 31, 2018 , 2017 and 2016 :

Intrinsic value (a)
Cash received for exercise price
__________
(a) The difference between the market value on the date of exercise and the option exercise price.

$

415

Year Ended 
December 31,

2018

2017

2016

12   $

56  

15   $

107  

7

14

14

11

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

At December 31, 2016 , all stock options were vested and at December 31, 2018 there were no unrecognized compensation costs related to nonvested stock
options.

Restricted Stock Units

Restricted stock units are granted under the LTIP with the majority being settled in a specific number of shares of common stock after the service condition has
been met. The corresponding cost of services is measured based on the grant date fair value of the restricted stock unit issued.

The  value  of  the  restricted  stock  units  is  expensed  over  the  requisite  service  period  using  the  straight-line  method.  The  requisite  service  period  for  restricted
stock units is generally three to five years . However, certain restricted stock unit awards become fully vested upon the employee reaching retirement-eligibility.
The value of the restricted stock units granted to retirement-eligible employees is either recognized immediately upon the date of grant or through the date at
which the employee reaches retirement eligibility. Exelon processes forfeitures as they occur for employees who do not complete the requisite service period.

The following table summarizes Exelon’s nonvested restricted stock unit activity for the year ended December 31, 2018 :

Exelon

Nonvested at December 31, 2017 (a)

Granted

Vested

Forfeited

Undistributed vested awards  (b)

Nonvested at December 31, 2018 (a)

Shares

Weighted Average
Grant Date Fair
Value (per share)

3,389,503   $

1,321,988  

(1,845,300)  

(65,046)  

(507,804)  

2,293,341   $

32.24

38.60

32.03

32.96

36.76

35.06

__________
(a) Excludes  1,131,487 and 1,488,383 of restricted  stock units issued to retirement-eligible  employees as of  December 31, 2018  and 2017 , respectively,  as they are fully

vested.

(b) Represents restricted stock units that vested but were not distributed to retirement-eligible employees during 2018 .

For Exelon, the weighted average grant date fair value (per share) of restricted stock units granted for the years ended December 31, 2018 , 2017 and 2016 was
$38.60 , $34.98 and $28.14 , respectively. At December 31, 2018 and 2017 , Exelon had obligations related to outstanding restricted stock units not yet settled
of $83 million and $108 million , respectively, which are included in common stock in Exelon’s Consolidated Balance Sheets. For the years ended December 31,
2018 , 2017 and 2016 , Exelon settled restricted stock units with fair value totaling $106 million , $88 million and $68 million , respectively. At December 31, 2018
, $38 million of total unrecognized compensation costs related to nonvested restricted stock units are expected to be recognized over the remaining weighted-
average period of 2.5 years.

Performance Share Awards

Performance share awards are granted under the LTIP. The performance share awards are settled 50% in common stock and 50% in cash at the end of the
three-year performance period, except for awards granted to vice presidents and higher officers that are settled 100% in cash if certain ownership requirements
are satisfied.

The common stock portion of the performance share awards is considered an equity award and is valued based on Exelon's stock price on the grant date. The
cash portion of the performance share awards is considered a liability award which is remeasured each reporting period based on Exelon’s current stock price.
As the value of the common stock and cash portions of the awards are based on Exelon’s stock price during the performance period, coupled with changes in
the total shareholder return modifier and expected payout of the award, the compensation costs are subject to volatility until payout is established.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Effective January 2017 for nonretirement-eligible employees, stock-based compensation costs are recognized over the vesting period of three years using the
straight-line method. For performance share awards granted to retirement-eligible employees, the value of the performance shares is recognized ratably over the
vesting period, which is the year of grant.

In  2016  and  prior,  for  nonretirement-eligible  employees,  stock-based  compensation  costs  are  recognized  over  the  vesting  period  of  three  years  using  the
graded-vesting method. For performance share awards granted to retirement-eligible employees, the value of the performance shares is recognized ratably over
the vesting period, which is the year of grant.

Exelon processes forfeitures as they occur for employees who do not complete the requisite service period.

The following table summarizes Exelon’s nonvested performance share awards activity for the year ended December 31, 2018 :

Exelon  

Nonvested at December 31, 2017 (a)

Granted

Change in performance

Vested

Forfeited

Undistributed vested awards (b)

Nonvested at December 31, 2018 (a)

Shares

Weighted Average
Grant Date Fair
Value (per share)

2,956,966   $

1,637,542  

1,348,029  

(848,574)  

(50,467)  

(1,640,268)  

3,403,228   $

32.65

38.15

30.66

36.26

36.24

33.38

33.13

__________
(a) Excludes 3,586,259 and 2,723,440 of performance share awards issued to retirement-eligible employees as of December 31, 2018 and 2017 , respectively, as they are

fully vested.

(b) Represents performance share awards that vested but were not distributed to retirement-eligible employees during 2018 .

The following table summarizes the weighted average grant date fair value and the fair value of performance share awards granted and settled for the years
ended December 31, 2018 , 2017 and 2016 :

Weighted average grant date fair value (per share)

$

Fair value of performance shares settled

2018 (a)

38.15   $

61  

Year Ended 
December 31,

2017

35.00   $

72  

2016

28.85

45

Fair value of performance shares settled in cash
__________
(a) As  of  December  31,  2018  , $33  million  of  total  unrecognized  compensation  costs  related  to  nonvested  performance  shares  are  expected  to  be  recognized  over  the

28

56  

49  

remaining weighted-average period of 1.7 years.

For  PHI, the  weighted  average  grant  date  fair value  (per share)  of  performance-based  restricted  stock  awards was  $26.10 for the year ended December 31,
2016 .  There  were  no  time-based  restricted  stock  awards  granted  for  the  year  ended  December  31,  2016  .  There  were  no  time-based  share  settlements  or
performance-based share settlements for the year-ended December 31, 2016 or the predecessor period January 1, 2016 to March 23, 2016 .

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following table presents the balance sheet classification of obligations related to outstanding performance share awards not yet settled:

Current liabilities (a)

Deferred credits and other liabilities (b)
Common stock

Total

__________
(a) Represents the current liability related to performance share awards expected to be settled in cash.
(b) Represents the long-term liability related to performance share awards expected to be settled in cash.

20. Earnings Per Share (Exelon)

December 31,

2018

2017

135   $

109  

26  

270   $

57

100

26

183

$

$

Basic  earnings  per  share  is  computed  by  dividing  net  income  attributable  to  common  stockholders  by  the  weighted  average  number  of  common  shares
outstanding  during  the  period.  Diluted  earnings  per  share  is  computed  by  dividing  net  income  attributable  to  common  shareholders  by  the  weighted  average
number  of  common  shares  outstanding,  including  the  effect  of  issuing  common  stock  assuming  (i)  stock  options  are  exercised,  and  (ii)  performance  share
awards and restricted stock awards are fully vested under the treasury stock method.

The following table sets forth the components of basic and diluted earnings per share and shows the effect of these stock options, performance share awards
and restricted stock awards on the weighted average number of shares outstanding used in calculating diluted earnings per share: 

Net income attributable to common shareholders

Weighted average common shares outstanding — basic

Assumed exercise and/or distributions of stock-based awards

Weighted average common shares outstanding — diluted

Year Ended December 31,

2018

2017

2016

$

2,010

$

3,786

$

1,121

967

2  

969

947

2  

949

924

3

927

The number of stock options not included in the calculation of diluted common shares outstanding due to their antidilutive effect was approximately 3 million in
2018 , 8 million in 2017 , and 12 million in 2016 . There were no equity units related to the PHI merger not included in the calculation of diluted common shares
outstanding  due  to  their  antidilutive  effect  for  the  years  ended  December  31,  2018  , 2017 ,  and  2016 .  See  Note  18 — Shareholders'  Equity  for additional
information regarding the equity units and equity forward units.

On June 1, 2017, Exelon settled the forward purchase contract, which was a component of the June 2014 equity units, through the issuance of approximately 33
million shares of Exelon common stock from treasury stock. The issuance of shares on June 1, 2017 triggered full dilution in the EPS calculation, which prior to
settlement  were  included  in  the  calculation  of  diluted  EPS  using  the  treasury  stock  method.  See  Note  18 — Shareholders'  Equity  for  additional  information
regarding share repurchases.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

21. Changes in Accumulated Other Comprehensive Income (Exelon, Generation and PECO)

The following tables present changes in accumulated other comprehensive income (loss) (AOCI) by component for the years ended  December 31, 2018 and
2017 :

For the Year Ended December 31, 2018

Exelon (a)

Gains and 
(Losses) on 
Cash Flow 
Hedges

Unrealized 
Gains and (losses) on 
Marketable 
Securities

Pension and 
Non-Pension 
Postretirement 
Benefit Plan 
Items

Foreign 
Currency 
Items

AOCI of Investments 
Unconsolidated 
Affiliates

Total

Beginning balance

$

(14)

  $

10   $

(2,998)   $

(23)   $

(1)

  $

(3,026)

OCI before reclassifications

Amounts reclassified from AOCI (b)

Net current-period OCI

Impact of adoption of Recognition
and Measurement of Financial
Assets and Financial Liabilities
standard (c)

Ending balance

Generation (a)

Beginning balance

OCI before reclassifications

Amounts reclassified from AOCI (b)

Net current-period OCI

Impact of adoption of Recognition
and Measurement of Financial
Assets and Financial Liabilities
standard (c)

Ending balance

PECO (a)

Beginning balance

OCI before reclassifications

Amounts reclassified from AOCI (b)

Net current-period OCI

Impact of adoption of Recognition
and Measurement of Financial
Assets and Financial Liabilities
standard (c)

Ending balance

$

$

$

$

$

11  

1  

12

—  

(2)

$

(16)

  $

11  

1  

12

—  

(4)

$

—   $

—  

—  

—

—  

— $

—  

—  

—

(143)  

181  

38

(10)  

—  

(10)

1

—  

1

(141)

182

41

(10)

—  

— $

(2,960)

$

—  

(33)

$

—  

(10)

—

$

(2,995)

3   $

—  

—  

—

(3)

— $

1   $

—  

—  

—

(1)

— $

419

—   $

(23)   $

(1)

  $

(37)

—  

—  

—

(10)  

—  

(10)

—  

— $

—  

(33)

$

—   $

—   $

—  

—  

—

—  

—  

—

—  

— $

—  

— $

—  

—  

—

—  

(1)

$

—   $

—  

—  

—

—  

—

$

1

1

2

(3)

(38)

1

—

—

—

(1)

—

 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For the Year Ended December 31, 2017

Exelon (a)

Beginning balance

OCI before reclassifications

Amounts reclassified from AOCI (b)

Net current-period OCI

Impact of adoption of Reclassification
of Certain Tax Effects from AOCI (d)

Ending balance

Generation (a)

Beginning balance

OCI before reclassifications

Amounts reclassified from AOCI (b)

Net current-period OCI

Ending balance

PECO (a)

Beginning balance

OCI before reclassifications

Amounts reclassified from AOCI (b)

Net current-period OCI

Ending balance

$

$

$

$

$

$

Gains and 
(Losses) on 
Cash Flow 
Hedges

Unrealized 
Gains on 
Marketable 
Securities

Pension and 
Non-Pension 
Postretirement 
Benefit Plan 
items

Foreign 
Currency 
Items

AOCI of Investments 
Unconsolidated 
Affiliates

Total

(17)

$

(1)

4

3

—  

(14)

$

(19)

$

(1)

4

3

(16)

$

— $

—

—

—

— $

4

6

—

6

—  

10

2

1

—

1

3

1

—

—

—

1

$

$

$

$

$

$

(2,610)

$

(30)

$

(7)

  $

(2,660)

11

140

151

7

—

7

(539)  

—  

(2,998)

$

(23)

$

6

—  

6

29

144

173

—  

(539)

(1)

$

(3,026)

— $

(30)

$

(7)

  $

(54)

—

—

—

7

—

7

— $

(23)

$

— $

— $

—

—

—

—

—

—

— $

— $

6

—  

6

(1)

13

4

17

$

(37)

—   $

—  

—  

—

—

$

1

—

—

—

1

__________ 
(a) All amounts are net of tax and noncontrolling interests. Amounts in parenthesis represent a decrease in AOCI.
(b) See next tables for details about these reclassifications.
(c) Exelon prospectively adopted the new standard Recognition and Measurement of Financial Assets and Financial Liabilities. The standard was adopted as of January 1,
2018, which resulted in an increase to Retained earnings and Accumulated other comprehensive loss of $10 million , $3 million and $1 million for Exelon, Generation and
PECO, respectively. The amounts reclassified related to Rabbi Trusts. See Note 1 — Significant Accounting Policies for additional information.

(d) Exelon  early  adopted  the  new standard  Reclassification  of Certain  Tax Effects  from  AOCI.  The standard  was adopted  retrospectively  as of  December  31,  2017,  which
resulted in an increase to Exelon’s Retained earnings and Accumulated other comprehensive loss of $539 million , primarily related to deferred income taxes associated
with Exelon’s pension and OPEB obligations. See Note 1 — Significant Accounting Policies for additional information.

420

 
 
 
 
 
 
   
   
   
   
   
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

ComEd, PECO, BGE, PHI, Pepco, DPL and ACE did not have any reclassifications out of AOCI to Net income during the years ended December 31, 2018 and
2017 . The following tables present amounts reclassified out of AOCI to Net income for Exelon and Generation during the years ended December 31, 2018 and
2017 :

For the Year Ended December 31, 2018

Details about AOCI components

Items reclassified out of AOCI (a)

Affected line item in the Statement of Operations and
Comprehensive Income

Exelon

Generation

Gains (Losses) on cash flow hedges

Other cash flow hedges

Amortization of pension and other
postretirement benefit plan items

Prior service costs (b)

Actuarial losses (b)

Total Reclassifications

  $

  $

  $

  $

  $

(1)   $

(1)

—  

(1)

$

90   $

(333)  

(243)

62  

(181)

$

(1)

(1)

  Interest expense

  Total before tax

—   Tax benefit

(1)

  Net of tax

—    

—    

—   Total before tax

—   Tax benefit

—   Net of tax

(182)

$

(1)

  Net of tax

421

 
 
  
 
 
   
   
 
 
   
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
Table of Contents

For the Year Ended December 31, 2017

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Details about AOCI components

Items reclassified out of AOCI (a)

Affected line item in the Statement of Operations and
Comprehensive Income

Exelon

Generation

Gains (Losses) on cash flow hedges

Other cash flow hedges

Amortization of pension and other postretirement benefit
plan items

Prior service costs (b)

Actuarial losses (b)

Total Reclassifications

  $

  $

  $

  $

  $

(5)   $

(5)

1  

(4)

$

92   $

(324)  

(232)

92  

(140)

$

(5)

(5)

1

(4)

  Interest expense

Total before tax

  Tax benefit

Net of tax

—    

—    

—

Total before tax

—   Tax benefit

—

Net of tax

(144)

$

(4)

Net of tax

__________
(a) Amounts in parenthesis represent a decrease in net income.
(b) This AOCI component is included in the computation of net periodic pension and OPEB cost. See Note 16 — Retirement Benefits for additional information.

422

 
 
  
 
 
   
   
 
 
   
 
 
 
   
 
 
   
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The  following  table  presents  income  tax  benefit  (expense)  allocated  to  each  component  of  other  comprehensive  income  (loss)  during  the  years  ended
December 31, 2018 , 2017 and 2016 :

Exelon

Pension and non-pension postretirement benefit plans:

Prior service benefit reclassified to periodic benefit cost

Actuarial loss reclassified to periodic benefit cost

Pension and non-pension postretirement benefit plans valuation adjustment

Change in unrealized gains on cash flow hedges

Change in unrealized gains (losses) on investments in unconsolidated affiliates

Change in unrealized gains on marketable securities

Total

Generation

Change in unrealized gains on cash flow hedges

Change in unrealized gains (losses) on investments in unconsolidated affiliates

Change in unrealized gains on marketable securities

Total

22. Commitments and Contingencies (All Registrants)

Commitments

For the Year Ended December 31,

2018

2017

2016

$

$

$

$

24   $

(86)  

50  

(5)  

—  

—  

36   $

(128)  

13  

(7)  

(3)  

(1)  

(17)   $

(90)

$

(4)   $

(1)  

—  

(5)   $

(6)   $

(3)  

(1)  

(10)

$

30

(118)

115

—

3

—

30

(2)

3

—

1

Constellation  Merger  Commitments  (Exelon  and  Generation).  In  February  2012,  the  MDPSC  issued  an  Order  approving  the  Exelon  and  Constellation
merger.  As  part  of  the  MDPSC  Order,  Exelon  agreed  to  provide  a  package  of  benefits  to  BGE  customers,  the  City  of  Baltimore  and  the  State  of  Maryland,
resulting in an estimated direct investment in the State of Maryland of approximately $1 billion .

The  direct  investment  included  the  construction  of  a  new  21-story  headquarters  building  in  Baltimore  for  Generation’s  competitive  energy  business  that  was
substantially complete in November 2016 and is now occupied by approximately 1,500 Exelon employees.  Generation's investment in leasehold improvements
totaled approximately $90 million .  In addition, Generation entered into a 20 -year operating lease as the primary lessee of the building. 

The direct investment commitment also included $450 million to $500 million relating to Exelon and Generation’s development or assistance in the development
of  285  -  300  MWs  of  new  generation  in  Maryland,  which  is  expected  to  be  completed  within  a  period  of  10  years  after  the  merger.  The  MDPSC  order
contemplated  various  options  for  complying  with  the  new  generation  development  commitments,  including  building  or  acquiring  generating  assets,  making
subsidy  or  compliance  payments,  or  in  circumstances  in  which  the  generation  build  is  delayed  or  certain  specified  provisions  are  elected,  making  liquidated
damages  payments.  Exelon  and  Generation  have  incurred  $458  million  towards  satisfying  the  commitment  for  new  generation  development  in  the  state  of
Maryland, with approximately 220 MW of the new generation commencing with commercial operations to date and an additional 10 MW commitment satisfied
through a liquidated damages payment made in the fourth quarter of 2016. Additionally, during the fourth quarter of 2016, given continued declines in projected
energy and capacity prices, Generation terminated rights to certain development projects originally intended to meet its remaining 55 MW commitment amount.
The  commitment  is  expected  to  be  satisfied  via  payment  of  liquidated  damages  or  execution  of  a  third  party  PPA,  rather  than  by  Generation  constructing
renewable generating assets. As a result, Exelon and Generation

423

 
 
 
 
 
   
   
 
   
   
 
 
   
   
 
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

recorded a pre-tax $50 million loss contingency in Operating and maintenance expense in Exelon’s and Generation’s Consolidated Statements of Operations
and Comprehensive Income for the year ended December 31, 2016. The remaining commitment is to be paid on or before January 15, 2023 unless the period is
extended by consent of Exelon and the State of Maryland. As of December 31, 2018 and 2017 , Exelon's and Generation's Consolidated Balance Sheets include
a $50 million liability within Deferred credits and other liabilities for this remaining commitment.

Commercial Commitments (All Registrants). Exelon’s commercial commitments as of December 31, 2018 , representing commitments potentially triggered by
future events, were as follows:

Letters of credit

Surety bonds (a)

Financing trust guarantees
Guaranteed lease residual values (b)

Total commercial commitments

Total

$

1,703   $

2019
1,394   $

Expiration within

2020

2021

2022

2023

2024 and beyond

308   $

1   $

—   $

—   $

1,402  

1,331  

378  

24  

—  

3  

33  

—  

3  

38  

—  

2  

—  

—  

3  

—  

—  

3  

$

3,507   $

2,728   $

344   $

41   $

3   $

3   $

—

—

378

10

388

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.
(b) Represents the maximum potential obligation in the event that the fair value of certain leased equipment and fleet vehicles is zero at the end of the maximum lease term.
The maximum lease term associated with these assets ranges from 3 to 8 years. The maximum potential obligation at the end of the minimum lease term would be $61
million , $19 million of which is a guarantee by Pepco, $26 million by DPL and $16 million by ACE. The minimum lease term associated with these assets ranges from 1 to
4 years. Historically, payments under the guarantees have not been made and PHI believes the likelihood of payments being required under the guarantees is remote.

Generation’s commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows:

Letters of credit
Surety bonds (a)

Total commercial commitments

$

$

Total

1,680   $

2019
1,380   $

2020

2021

2022

2023

2024 and beyond

299   $

1   $

—   $

—   $

Expiration within

1,220  

1,201  

19  

2,900   $

2,581   $

318   $

—  

1   $

—  

—   $

—  

—   $

—

—

—

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.

ComEd’s commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows:

Letters of credit

Surety bonds (a)

Financing trust guarantees

Total commercial commitments

Expiration within

Total

2019

2020

2021

2022

2023

2024 and beyond

$

$

2   $

2   $

—   $

—   $

—   $

—   $

12  

200  

10  

—  

—  

—  

2  

—  

—  

—  

—  

—  

214   $

12   $

—   $

2   $

—   $

—   $

—

—

200

200

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.

424

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

PECO’s commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows: 

Surety bonds (a)

Financing trust guarantees

Total commercial commitments

Expiration within

Total

2019

2020

2021

2022

2023

2024 and beyond

$

$

9   $

178  

187   $

9   $

—  

9   $

—   $

—  

—   $

—   $

—  

—   $

—   $

—  

—   $

—   $

—  

—   $

—

178

178

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.

BGE’s commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows:

Letters of credit

Surety bonds (a)
Total commercial commitments

Total

2019

2020

2021

2022

2023

2024 and beyond

$

$

3   $

17  

20   $

2   $

3  

5   $

1   $

14  

15   $

—   $

—  

—   $

—   $

—  

—   $

—   $

—  

—   $

—

—

—

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.

PHI commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows:

Expiration within

Letters of credit

Surety bonds (a)  
Guaranteed lease residual values (b)

Total commercial commitments

Expiration within

Total

2019

2020

2021

2022

2023

2024 and beyond

$

$

$

8   $

41   $

24  

73

$

—   $

41   $

3  

8   $

—   $

3  

44

$

11

$

—   $

—   $

2  

2

$

—   $

—   $

3  

3

$

—   $

—   $

3  

3

$

—

—

10

10

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.
(b) Represents the maximum potential obligation in the event that the fair value of certain leased equipment and fleet vehicles is zero at the end of the maximum lease term.
The maximum lease term associated with these assets ranges from 3 to 8 years. The maximum potential obligation at the end of the minimum lease term would be $61
million .  The  minimum  lease  term  associated  with  these  assets  ranges  from  1  to  4  years.  Historically,  payments  under  the  guarantees  have  not  been  made  and  PHI
believes the likelihood of payments being required under the guarantees is remote.

425

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Pepco commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows:

Letters of credit

Surety bonds (a)
Guaranteed lease residual values (b)

Total commercial commitments

Expiration within

Total

2019

2020

2021

2022

2023

2024 and beyond

$

$

$

8   $

33   $

8  

49   $

—   $

33   $

1  

34   $

8   $

—   $

1  

9   $

—   $

—   $

1  

1   $

—   $

—   $

1  

1   $

—   $

—   $

1  

1   $

—

—

3

3

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.
(b) Represents the maximum potential obligation in the event that the fair value of certain leased equipment and fleet vehicles is zero at the end of the maximum lease term.
The maximum lease term associated with these assets ranges from 3 to 8 years. The maximum potential obligation at the end of the minimum lease term would be $19
million . The minimum lease term associated with these assets ranges from 1 to 4 years. Historically, payments under the guarantees have not been made and Pepco
believes the likelihood of payments being required under the guarantees is remote.

DPL commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows:

Expiration within

Surety bonds (a)
Guaranteed lease residual values (b)

Total commercial commitments

Total

2019

2020

2021

2022

2023

2024 and beyond

$

$

5   $

10  

15   $

5   $

1  

6   $

—   $

1  

1   $

—   $

1  

1   $

—   $

1  

1   $

—   $

1  

1   $

—

5

5

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.
(b) Represents the maximum potential obligation in the event that the fair value of certain leased equipment and fleet vehicles is zero at the end of the maximum lease term.
The maximum lease term associated with these assets ranges from 3 to 8 years. The maximum potential obligation at the end of the minimum lease term would be $26
million .  The  minimum  lease  term  associated  with  these  assets  ranges  from  1  to  4  years.  Historically,  payments  under  the  guarantees  have  not  been  made  and  DPL
believes the likelihood of payments being required under the guarantees is remote.

ACE commercial commitments as of December 31, 2018 , representing commitments potentially triggered by future events, were as follows:

Surety bonds (a)  
Guaranteed lease residual values (b)

Total commercial commitments

Total

2019

2020

2021

2022

2023

2024 and beyond

$

$

3   $

6  

9   $

3   $

1  

4   $

—   $

1  

1   $

—   $

—  

—   $

—   $

1  

1   $

—   $

1  

1   $

—

2

2

__________
(a) Surety bonds—Guarantees issued related to contract and commercial agreements, excluding bid bonds.
(b) Represents the maximum potential obligation in the event that the fair value of certain leased equipment and fleet vehicles is zero at the end of the maximum lease term.
The maximum lease term associated with these assets ranges from 3 to 8 years. The maximum potential obligation at the end of the minimum lease term would be $16
million .  The  minimum  lease  term  associated  with  these  assets  ranges  from  1  to  4  years.  Historically,  payments  under  the  guarantees  have  not  been  made  and  ACE
believes the likelihood of payments being required under the guarantees is remote.

Expiration within

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Table of Contents

Leases (All Registrants)

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Minimum future operating lease payments, including lease payments for contracted generation, vehicles, real estate, computers, rail cars, operating equipment
and office equipment, as of December 31, 2018 were:

2019

2020

2021

2022

2023

Remaining
years

Total minimum
future lease
payments

Exelon (a)(b)

Generation (a)(b)

ComEd (a)(c)

PECO (a)(c)

BGE (a)(c)(d)(e)

PHI (a)

Pepco (a)

DPL (a)(c)

ACE (a)

$

140   $

33   $

7   $

5   $

35   $

48   $

11   $

14   $

149  

143  

126   

97  

723  

46  

46  

47   

46  

5  

4  

4  

3  

5  

5  

5  

5  

545  

—  

—  

35  

33  

18  

3  

19  

46  

43  

42  

39  

10  

9  

8  

8  

159  

40  

13  

12  

12  

10  

35  

7

6

5

5

4

5

$

1,378   $

763   $

23   $

25   $

143   $

377   $

86   $

96   $

32

Includes amounts related to shared use land arrangements.

__________
(a)
(b) Excludes Generation’s contingent operating lease payments associated with contracted generation agreements.
(c) Amounts related to certain real estate leases and railroad licenses effectively have indefinite payment periods. As a result, ComEd, PECO, BGE and DPL have excluded
these  payments  from  the  remaining  years  as  such  amounts  would  not  be  meaningful.  ComEd's,  PECO’s,  BGE’s  and  DPL's  average  annual  obligation  for  these
arrangements, included in each of the years 2019 - 2023 , was $3 million , $5 million , $1 million and $1 million respectively. Also includes amounts related to shared use
land arrangements.
Includes all future lease payments on a 99 -year real estate lease that expires in 2106 .

(d)
(e) The BGE column above includes minimum future lease payments associated with a 6-year lease for the Baltimore City conduit system that became effective during the
fourth  quarter  of  2016.  BGE's  total  commitments  under  the  lease  agreement  are  $26 million , $28 million , $28 million and $14 million related to years 2019 - 2022 ,
respectively.

The following table presents the Registrants’ rental expense under operating leases for the years ended December 31, 2018, 2017 and 2016:

For the Year Ended December 31,
2018

$

2017

2016

Exelon

Generation (a)

ComEd

PECO

BGE

Pepco

DPL

ACE

670   $

709  

777  

558   $

578  

667  

7   $

10   $

35   $

10   $

13   $

9  

15  

9  

7  

32  

22  

11  

8  

16  

15  

8

14

13

For the Year Ended
December 31, 2018

For the Year Ended
December 31, 2017

March 24, 2016 to
December 31, 2016

Successor

Predecessor

January 1, 2016 to
March 23, 2016

PHI
Rental expense under
operating leases

$

48   $

63   $

49     $

12

__________
(a)

Includes contingent operating lease payments associated with contracted generation agreements that are not included in the minimum future operating lease payments
table  above.  Payments  made  under  Generation’s  contracted  generation  lease  agreements  totaled  $493 million  , $508 million  and $604 million  during 2018 , 2017 and
2016 , respectively. Excludes contract amortization associated with purchase accounting and contract acquisitions.

For information regarding capital lease obligations, see Note 13 —Debt and Credit Agreements.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Nuclear Insurance (Exelon and Generation)

Generation  is  subject  to  liability,  property  damage  and  other  risks  associated  with  major  incidents  at  any  of  its  nuclear  stations.  Generation  has  mitigated  its
financial exposure to these risks through insurance and other industry risk-sharing provisions.

The  Price-Anderson  Act  was  enacted  to  ensure  the  availability  of  funds  for  public  liability  claims  arising  from  an  incident  at  any  of  the  U.S.  licensed  nuclear
facilities  and  to  limit  the  liability  of  nuclear  reactor  owners  for  such  claims  from  any  single  incident.  As  of  December  31,  2018  ,  the  current  liability  limit  per
incident is $14.1 billion and is subject to change to account for the effects of inflation and changes in the number of licensed reactors at least once every five
years with the last adjustment effective November 1, 2018. In accordance with the Price-Anderson Act, Generation maintains financial protection at levels equal
to the amount of liability insurance available from private sources through the purchase of private nuclear energy liability insurance for public liability claims that
could arise in the event of an incident. Effective January 1, 2017, the required amount of nuclear energy liability insurance purchased is $450 million for each
operating site. Claims exceeding that amount are covered through mandatory participation in a financial protection pool, as required by the Price Anderson-Act,
which  provides  the  additional  $13.6  billion  per  incident  in  funds  available  for  public  liability  claims.  Participation  in  this  secondary  financial  protection  pool
requires  the  operator  of  each  reactor  to  fund  its  proportionate  share  of  costs  for  any  single  incident  that  exceeds  the  primary  layer  of  financial  protection.
Exelon’s share of this secondary layer would be approximately $3.1 billion , however any amounts payable under this secondary layer would be capped at $454
million per year.

In addition, the U.S. Congress could impose revenue-raising measures on the nuclear industry to pay public liability claims exceeding the $14.1 billion limit for a
single incident.

As part of the execution of the NOSA on April 1, 2014, Generation executed an Indemnity Agreement pursuant to which Generation agreed to indemnify EDF
and its affiliates against third-party claims that may arise from any future nuclear incident (as defined in the Price-Anderson Act) in connection with the CENG
nuclear  plants  or  their  operations.  Exelon  guarantees  Generation’s  obligations  under  this  indemnity.  See  Note  2  —  Variable  Interest  Entities  for  additional
information on Generation’s operations relating to CENG.

Generation is required each year to report to the NRC the current levels and sources of property insurance that demonstrates Generation possesses sufficient
financial  resources  to  stabilize  and  decontaminate  a  reactor  and  reactor  station  site  in  the  event  of  an  accident.  The  property  insurance  maintained  for  each
facility is currently provided through insurance policies purchased from NEIL, an industry mutual insurance company of which Generation is a member.

NEIL may declare distributions to its members as a result of favorable operating experience. In recent years NEIL has made distributions to its members, but
Generation  cannot  predict  the  level  of  future  distributions  or  if  they  will  continue  at  all.  Generation's  portion  of  the  annual  distribution  declared  by  NEIL  is
estimated  to  be  $58  million  for 2018 ,  and  was  $60  million  and $21  million  for 2017 and 2016 ,  respectively.  In  addition,  in  March  2018,  NEIL  declared  a
supplemental  distribution.  Generation's  portion  of  the  supplemental  distribution  declared  by  NEIL  was  $31  million  .  The  distributions  were  recorded  as  a
reduction to Operating and maintenance expense within Exelon and Generation’s Consolidated Statements of Operations and Comprehensive Income.

Premiums paid to NEIL by its members are also subject to a potential assessment for adverse loss experience in the form of a retrospective premium obligation.
NEIL  has  never  assessed  this  retrospective  premium  since  its  formation  in  1973,  and  Generation  cannot  predict  the  level  of  future  assessments  if  any.  The
current maximum aggregate annual retrospective premium obligation for Generation is approximately $345 million . NEIL requires its members to maintain an
investment  grade  credit  rating  or  to  ensure  collectability  of  their  annual  retrospective  premium  obligation  by  providing  a  financial  guarantee,  letter  of  credit,
deposit premium, or some other means of assurance.

NEIL provides “all risk” property damage, decontamination and premature decommissioning insurance for each station for losses resulting from damage to its
nuclear  plants,  either  due  to  accidents  or  acts  of  terrorism.  If  the  decision  is  made  to  decommission  the  facility,  a  portion  of  the  insurance  proceeds  will  be
allocated to a fund, which Generation is required by the NRC to maintain, to provide for decommissioning the facility. In the event of an insured loss, Generation
is unable to predict the timing of the availability of insurance proceeds to Generation and the amount of such proceeds that would be available. In the event that
one  or  more  acts  of  terrorism  cause  accidental  property  damage  within  a  twelve-month  period  from  the  first  accidental  property  damage  under  one  or  more
policies

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

for all insured plants, the maximum recovery by Exelon will be an aggregate of $ 3.2 billion plus such additional amounts as the insurer may recover for all such
losses from reinsurance, indemnity and any other source, applicable to such losses.

For  its  insured  losses,  Generation  is  self-insured  to  the  extent  that  losses  are  within  the  policy  deductible  or  exceed  the  amount  of  insurance  maintained.
Uninsured losses and other expenses, to the extent not recoverable from insurers or the nuclear industry, could also be borne by Generation. Any such losses
could have a material adverse effect on Exelon’s and Generation’s financial statements.

Spent Nuclear Fuel Obligation (Exelon and Generation)

Under the NWPA, the DOE is responsible for the development of a geologic repository for and the disposal of SNF and high-level radioactive waste. As required
by  the  NWPA,  Generation  is  a  party  to  contracts  with  the  DOE  (Standard  Contracts)  to  provide  for  disposal  of  SNF  from  Generation’s  nuclear  generating
stations.  In  accordance  with  the  NWPA  and  the  Standard  Contracts,  Generation  historically  had  paid  the  DOE  one  mill  (  $0.001 )  per  kWh  of  net  nuclear
generation for the cost of SNF disposal. On November 19, 2013, the D.C. Circuit Court ordered the DOE to submit to Congress a proposal to reduce the current
SNF disposal fee to zero, unless and until there is a viable disposal program. On May 9, 2014, the DOE notified Generation that the SNF disposal fee remained
in effect through May 15, 2014, after which time the fee was set to zero. As a result, for the years ended December 31, 2018 , 2017 and 2016 , Generation did
not  incur  any  expense  in  SNF  disposal  fees.  Until  a  new  fee  structure  is  in  effect,  Exelon  and  Generation  will  not  accrue  any  further  costs  related  to  SNF
disposal fees. This fee may be adjusted prospectively to ensure full cost recovery. The NWPA and the Standard  Contracts required the DOE to begin taking
possession  of  SNF  generated  by  nuclear  generating  units  by  no  later  than  January  31,  1998.  The  DOE,  however,  failed  to  meet  that  deadline  and  its
performance has been, and is expected to be, delayed significantly.

The 2010 Federal budget (which became effective October 1, 2009) eliminated almost all funding for the creation of the Yucca Mountain repository while the
Obama Administration devised a new strategy for long-term SNF management. The Blue Ribbon Commission (BRC) on America’s Nuclear Future, appointed by
the  U.S.  Energy  Secretary,  released  a  report  on  January  26,  2012,  detailing  comprehensive  recommendations  for  creating  a  safe,  long-term  solution  for
managing and disposing of the nation’s SNF and high-level radioactive waste.

In early 2013, the DOE issued an updated “Strategy for the Management and Disposal of Used Nuclear Fuel and High-Level Radioactive Waste” in response to
the BRC recommendations. This strategy included a consolidated interim storage facility that was planned to be operational in 2025. However, due to continued
delays  on  the  part  of  the  DOE,  Generation  currently  assumes  the  DOE  will  begin  accepting  SNF  in  2030  and  uses  that  date  for  purposes  of  estimating  the
nuclear  decommissioning  asset  retirement  obligations.  The  SNF  acceptance  date  assumption  is  based  on  management’s  estimates  of  the  amount  of  time
required for DOE to select a site location and develop the necessary infrastructure for long-term SNF storage.

In  August  2004,  Generation  and  the  DOJ,  in  close  consultation  with  the  DOE,  reached  a  settlement  under  which  the  government  agreed  to  reimburse
Generation,  subject  to  certain  damage  limitations  based  on  the  extent  of  the  government’s  breach,  for  costs  associated  with  storage  of  SNF  at  Generation’s
nuclear  stations  pending  the  DOE’s  fulfillment  of  its  obligations.  Generation’s  settlement  agreement  does  not  include  FitzPatrick  and  FitzPatrick  does  not
currently  have  a  settlement  agreement  in  place.  Calvert  Cliffs,  Ginna  and  Nine  Mile  Point  each  have  separate  settlement  agreements  in  place  with  the  DOE
which  were  extended  during  2017  to  provide  for  the  reimbursement  of  SNF  storage  costs  through  December  31,  2019.  Generation  submits  annual
reimbursement requests to the DOE for costs associated with the storage of SNF. In all cases, reimbursement requests are made only after costs are incurred
and only for costs resulting from DOE delays in accepting the SNF.

Under the settlement agreements, Generation has received cumulative cash reimbursements for costs incurred as follows:

Cumulative cash reimbursements (b)

Total

Net (a)

$

1,274   $

1,100

__________
(a) Total after considering amounts due to co-owners of certain nuclear stations and to the former owner of Oyster Creek.
(b)

Includes $53 and $49 , respectively, for amounts received since April 1, 2014, for costs incurred under the CENG DOE Settlement Agreements prior to the consolidation
of CENG.

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

As of December 31, 2018 and 2017 , the amount of SNF storage costs for which reimbursement has been or will be requested from the DOE under the DOE
settlement agreements is as follows:

DOE receivable - current (a)

DOE receivable - noncurrent (b)

December 31, 2018

December 31, 2017

$

124   $

15  

94

15

Amounts owed to co-owners (a)(c)
__________
(a) Recorded in Accounts receivable, other.
(b) Recorded in Deferred debits and other assets, other
(c) Non-CENG amounts owed to co-owners are recorded in Accounts receivable, other.  CENG amounts owed to co-owners are recorded in Accounts payable. Represents

(11)

(17)  

amounts owed to the co-owners of Peach Bottom, Quad Cities, and Nine Mile Point Unit 2 generating facilities.

The Standard Contracts with the DOE also required the payment to the DOE of a one-time fee applicable to nuclear generation through April 6, 1983. The fee
related to the former PECO units has been paid. Pursuant to the Standard Contracts, ComEd previously elected to defer payment of the one-time fee of $277
million for its units (which are now part of Generation), with interest to the date of payment, until just prior to the first delivery of SNF to the DOE. The unfunded
liabilities for SNF disposal costs, including the one-time fee, were transferred to Generation as part of Exelon’s 2001 corporate restructuring. A prior owner of
FitzPatrick also elected to defer payment of the one-time fee of $34 million , with interest to the date of payment, for the FitzPatrick unit. As part of the FitzPatrick
acquisition on March 31, 2017, Generation assumed a SNF liability for the DOE one-time fee obligation with interest related to FitzPatrick along with an offsetting
asset for the contractual right to reimbursement from NYPA, a prior owner of FitzPatrick, for amounts paid for the FitzPatrick DOE one-time fee obligation. The
amounts  were  recorded  at  fair  value.  See  Note  4  -  Mergers,  Acquisitions  and  Dispositions  for  additional  information  on  the  FitzPatrick  acquisition.  As  of
December  31,  2018  and 2017 ,  the  SNF  liability  for  the  one-time  fee  with  interest  was  $1,171  million  and $1,147  million  ,  respectively,  which  is  included  in
Exelon's and Generation's Consolidated Balance Sheets. Interest for Exelon's and Generation's SNF liabilities accrues at the 13-week Treasury Rate. The 13-
week Treasury  Rate in effect  for calculation  of  the  interest  accrual  at December 31, 2018 was 2.351% for the deferred  amount transferred  from ComEd and
2.217% for the deferred FitzPatrick amount. The outstanding one-time fee obligations for the Nine Mile Point, Ginna, Oyster Creek and TMI units remain with the
former owners. The Clinton and Calvert Cliffs units have no outstanding obligation. See Note 11 — Fair Value of Financial Assets and Liabilities for additional
information.

Environmental Remediation Matters

General (All Registrants). The Registrants’ operations have in the past, and may in the future, require substantial expenditures to comply with environmental
laws. Additionally, under Federal and state environmental laws, the Registrants are generally liable for the costs of remediating environmental contamination of
property now or formerly owned by them and of property contaminated by hazardous substances generated by them. The Registrants own or lease a number of
real estate parcels, including parcels on which their operations or the operations of others may have resulted in contamination by substances that are considered
hazardous  under  environmental  laws.  In  addition,  the  Registrants  are  currently  involved  in  a  number  of  proceedings  relating  to  sites  where  hazardous
substances  have  been  deposited  and  may  be  subject  to  additional  proceedings  in  the  future.  Unless  otherwise  disclosed,  the  Registrants  cannot  reasonably
estimate whether they will incur significant liabilities for additional investigation and remediation costs at these or additional sites identified by the Registrants,
environmental  agencies  or  others,  or  whether  such  costs  will  be  recoverable  from  third  parties,  including  customers.  Additional  costs  could  have  a  material,
unfavorable impact on the Registrants' financial statements.

MGP Sites (Exelon and the Utility Registrants). ComEd, PECO, BGE and DPL have identified sites where former MGP or gas purification activities have or
may have resulted in actual site contamination. For almost all of these sites, there are additional PRPs that may share responsibility for the ultimate remediation
of each location.

•

ComEd has identified 42 sites, 21 of which have been remediated and approved by the Illinois EPA or the U.S. EPA and 21 that are currently under
some degree of active study and/or remediation. ComEd expects the majority of the remediation at these sites to continue through at least 2023.

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(Dollars in millions, except per share data unless otherwise noted)

•

•

•

PECO  has  identified  26  sites,  17  of  which  have  been  remediated  in  accordance  with  applicable  PA  DEP  regulatory  requirements  and  9  that  are
currently under some degree of active study and/or remediation. PECO expects the majority of the remediation at these sites to continue through at
least 2022.

BGE has identified 13 sites, 9 of which have been remediated and approved by the MDE and 4 that require some level of remediation and/or ongoing
activity. BGE expects the majority of the remediation at these sites to continue through at least 2019.

DPL has identified 3 sites, 2 of which remediation has been completed and approved by the MDE or the Delaware Department of Natural Resources
and Environmental Control. The remaining site is under study and the required cost at the site is not expected to be material.

The historical nature of the MGP sites and the fact that many of the sites have been buried and built over, impacts the ability to determine a precise estimate of
the ultimate costs prior to initial sampling and determination of the exact scope and method of remedial activity. Management determines its best estimate of
remediation  costs  using  all  available  information  at  the  time  of  each  study,  including  probabilistic  and  deterministic  modeling  for  ComEd  and  PECO,  and  the
remediation standards currently required by the applicable state environmental agency.  Prior to completion of any significant clean up, each site remediation
plan is approved by the appropriate state environmental agency.

ComEd,  pursuant  to  an  ICC  order,  and  PECO,  pursuant  to  settlements  of  natural  gas  distribution  rate  cases  with  the  PAPUC,  are  currently  recovering
environmental remediation costs of former MGP facility sites through customer rates. See Note 4 — Regulatory Matters for additional information regarding the
associated regulatory assets. While BGE and DPL do not have riders for MGP clean-up costs, they have historically received recovery of actual clean-up costs
in distribution rates.

During the third quarter of 2018, the Utility Registrants completed a study of their future estimated environmental remediation requirements. The study resulted
in a $48 million increase to the environmental liability and related regulatory asset for ComEd. The increase was primarily due to a revised closure strategy at
one site, which resulted  in an increase  in the  excavation area  and depth of impacted soils from the site.  The study  did not  result in a material change  to the
environmental liability for PECO, BGE, Pepco, DPL, and ACE.

As of December 31, 2018 and 2017 , the Registrants had accrued the following undiscounted amounts for environmental liabilities in Other current liabilities and
Other deferred credits and other liabilities within their respective Consolidated Balance Sheets:

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

December 31, 2018

$

Total environmental
investigation
and remediation reserve

Portion of total related to MGP
investigation and remediation

496   $

108  

329  

27  

5  

27  

25  

1  

1  

431

356

—

327

25

4

—

—

—

—

 
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Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

December 31, 2017

$

Total environmental
investigation
and remediation reserve

Portion of total related to MGP
investigation and remediation

466   $

117  

285  

30  

5  

29  

27  

1  

1  

315

—

283

28

4

—

—

—

—

Cotter  Corporation  (Exelon  and  Generation).  The  EPA  has  advised  Cotter  Corporation  (Cotter),  a  former  ComEd  subsidiary,  that  it  is  potentially  liable  in
connection with radiological contamination at a site known as the West Lake Landfill in Missouri. In 2000, ComEd sold Cotter to an unaffiliated third-party. As
part of the sale, ComEd agreed to indemnify Cotter for any liability arising in connection with the West Lake Landfill. In connection with Exelon’s 2001 corporate
restructuring, this responsibility to indemnify Cotter was transferred to Generation. On May 29, 2008, the EPA issued a Record of Decision (ROD) approving a
landfill  cover  remediation  approach.  By  letter  dated  January  11,  2010,  the  EPA  requested  that  the  PRPs  perform  a  supplemental  feasibility  study  for  a
remediation alternative that would involve complete excavation of the radiological contamination. On September 30, 2011, the PRPs submitted the supplemental
feasibility study to the EPA for review. Since June 2012, the EPA has requested that the PRPs perform a series of additional analyses and groundwater and soil
sampling as part of the supplemental feasibility study. This further analysis was focused on a partial excavation remedial option. The PRPs provided the draft
final Remedial Investigation and Feasibility Study (RI/FS) to the EPA in January 2018, which formed the basis for EPA’s proposed remedy selection, as further
discussed  below.  There  are  currently  three  PRPs  participating  in  the  West  Lake  Landfill  remediation  proceeding.  Investigation  by  Generation  has  identified  a
number of other parties who also may be PRPs and could be liable to contribute to the final remedy. Further investigation is ongoing.

On September 27, 2018 the EPA issued its ROD Amendment for the selection of the final remedy for the West Lake Landfill Superfund site. The ROD modifies
the  EPA’s  previously  proposed  plan  for  partial  excavation  of  the  radiological  materials  by  reducing  the  depths  of  the  excavation.  The  ROD  also  allows  for
variation in depths of excavation depending on radiological concentrations. The EPA estimates that the ROD will result in a reduction of both radiological and
non-radiological  waste  excavated,  with  corresponding  reductions  in  the  cost  and  schedule  for  the  remedy.  The  next  step  is  the  negotiation  of  a  Consent
Agreement by the EPA with the PRPs to implement the ROD, a process that is expected to be completed in the first quarter of 2020. The estimated cost of the
remedy, taking into account the current EPA technical requirements and the total costs expected to be incurred by the PRPs in fully executing the remedy, is
approximately $280  million  ,  including  cost  escalation  on  an  undiscounted  basis,  which  would  be  allocated  among  the  final  group  of  PRPs.  Generation  has
determined that a loss associated with the EPA’s partial excavation and enhanced landfill cover remedy is probable and has recorded a liability included in the
table above, that reflects management’s best estimate of Cotter’s allocable share of the ultimate cost for the entire remediation effort. Given the joint and several
nature of this liability, the magnitude of Generation’s ultimate liability will depend on the actual costs incurred to implement the required remediation remedy as
well as on the nature and terms of any cost-sharing arrangements with the final group of PRPs. Therefore, it is reasonably possible that the ultimate cost and
Generation’s  associated  allocable  share  could  differ  significantly  once  these  uncertainties  are  resolved,  which  could  have  a  material  impact  on  Exelon's  and
Generation's future financial statements.

On January 16, 2018, the PRPs were advised by the EPA that it will begin an additional investigation and evaluation of groundwater conditions at the West Lake
Landfill.  In  September  2018,  the  PRPs  agreed  to  an  Administrative  Settlement  Agreement  and  Order  on  Consent  for  the  performance  by  the  PRPs  of  the
groundwater  RI/FS  and  reimbursement  of  EPA’s  oversight  costs.  The  purposes  of  this  new  RI/FS  are  to  define  the  nature  and  extent  of  any  groundwater
contamination  from  the  West  Lake  Landfill  site,  determine  the  potential  risk posed  to  human  health  and  the  environment,  and  evaluate  remedial  alternatives.
Generation estimates the undiscounted cost for the groundwater RI/FS for West Lake to be approximately $20 million . Generation determined a loss associated
with the RI/FS is probable and has recorded a liability included in the table above that reflects management’s best estimate of Cotter’s allocable share of the cost
among the PRPs. At this time Generation cannot predict the likelihood

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

or the extent to which, if any, remediation activities will be required and cannot estimate a reasonably possible range of loss for response costs beyond those
associated with the RI/FS component. It is reasonably possible, however, that resolution of this matter could have a material, unfavorable impact on Exelon’s
and Generation’s future financial statements.

During December 2015, the EPA took two actions related to the West Lake Landfill designed to abate what it termed as imminent and dangerous conditions at
the landfill. The first involved installation by the PRPs of a non-combustible surface cover to protect against surface fires in areas where radiological materials
are believed to have been disposed which was completed in 2018. The second action involved EPA's public statement that it will require the PRPs to construct a
barrier wall in an adjacent landfill to prevent a subsurface fire from spreading to those areas of the West Lake Landfill where radiological materials are believed
to  have  been  disposed.  At  this  time,  Generation  believes  that  the  requirement  to  build  a  barrier  wall  is  remote  in  light  of  other  technologies  that  have  been
employed by the adjacent landfill owner. Finally, one of the other PRPs, the landfill owner and operator of the adjacent landfill, has indicated that it will be making
a contribution claim against Cotter for costs that it has incurred to prevent the subsurface fire from spreading to those areas of the West Lake Landfill where
radiological materials are believed to have been disposed. At this time, Exelon and Generation do not possess sufficient information to assess this claim and
therefore  are  unable  to  estimate  a  range  of  loss,  if  any.  As  such,  no  liability  has  been  recorded  for  the  potential  contribution  claim.  It  is  reasonably  possible,
however, that resolution of this matter could have a material, unfavorable impact on Exelon’s and Generation's financial statements.

On  August  8,  2011,  Cotter  was  notified  by  the  DOJ  that  Cotter  is  considered  a  PRP  with  respect  to  the  government’s  clean-up  costs  for  contamination
attributable to low level radioactive residues at a former storage and reprocessing facility named Latty Avenue near St. Louis, Missouri. The Latty Avenue site is
included  in  ComEd’s  indemnification  responsibilities  discussed  above  as  part  of  the  sale  of  Cotter.  The  radioactive  residues  had  been  generated  initially  in
connection with the processing of uranium ores as part of the U.S. Government’s Manhattan Project. Cotter purchased the residues in 1969 for initial processing
at  the  Latty  Avenue  facility  for  the  subsequent  extraction  of  uranium  and  metals.  In  1976,  the  NRC  found  that  the  Latty  Avenue  site  had  radiation  levels
exceeding  NRC  criteria  for  decontamination  of  land  areas.  Latty  Avenue  was  investigated  and  remediated  by  the  United  States  Army  Corps  of  Engineers
pursuant to funding under FUSRAP. The DOJ has not yet formally advised the PRPs of the amount that it is seeking, but it is believed to be approximately $90
million from all PRPs. The DOJ and the PRPs agreed to toll the statute of limitations until August 2019 so that settlement discussions could proceed. Generation
has determined that a loss associated with this matter is probable under its indemnification agreement with Cotter and has recorded an estimated liability, which
is included in the table above.

Commencing in February 2012, a number of lawsuits have been filed in the U.S. District Court for the Eastern District of Missouri. Among the defendants were
Exelon, Generation and ComEd, all of which were subsequently dismissed from the case, as well as Cotter, which remains a defendant. The suits allege that
individuals living in the North St. Louis area developed some form of cancer or other serious illness due to Cotter's negligent or reckless conduct in processing,
transporting, storing, handling and/or disposing of radioactive materials. Plaintiffs are asserting public liability claims under the Price-Anderson Act. Their state
law claims for negligence, strict liability, emotional distress, and medical monitoring have been dismissed. In the event of a finding of liability against Cotter, it is
probable  that  Generation  would  be  financially  responsible  due  to  its  indemnification  responsibilities  of  Cotter  described  above.  The  court  has  dismissed  a
number of the lawsuits as untimely, which has been upheld on appeal. Cotter and the remaining plaintiffs have engaged in settlement discussions pursuant to
court-ordered mediation. During the second quarter of 2018, Generation determined a loss was probable based on the advancement of settlement proceedings
and recorded an immaterial liability.

Benning Road Site (Exelon, Generation, PHI and Pepco). In September 2010, PHI received a letter from EPA identifying the Benning Road site as one of six
land-based sites potentially contributing to contamination of the lower Anacostia River. A portion of the site was formerly the location of a Pepco Energy Services
electric  generating  facility.  That  generating  facility  was  deactivated  in  June  2012  and  plant  structure  demolition  was  completed  in  July  2015.  The  remaining
portion of the site consists of a Pepco transmission and distribution service center that remains in operation. In December 2011, the U.S. District Court for the
District of Columbia approved a Consent Decree entered into by Pepco and Pepco Energy Services with the DOEE, which requires Pepco and Pepco Energy
Services  to  conduct  a  Remediation  Investigation  (RI)/  Feasibility  Study  (FS)  for  the  Benning  Road  site  and  an  approximately  10  to  15-acre  portion  of  the
adjacent Anacostia River. The RI/FS will form the basis for the remedial actions for the Benning Road site and for the Anacostia River sediment associated with
the site. The Consent Decree does not obligate Pepco or Pepco Energy Services to pay for or perform any remediation work, but it is anticipated that DOEE will
look to Pepco and Pepco Energy Services to assume responsibility for cleanup of any conditions in the river

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

that are determined to be attributable to past activities at the Benning Road site. Pursuant to Exelon's March 23, 2016 acquisition of PHI, Pepco Energy Services
was transferred to Generation.

Since  2013,  Pepco  and  Pepco  Energy  Services  (now  Generation)  have  been  performing  RI  work  and  have  submitted  multiple  draft  RI  reports  to  the  DOEE.
Once the RI work is completed, Pepco and Generation will issue a draft “final” RI report for review and comment by DOEE and the public. Pepco and Generation
will then proceed to develop an FS to evaluate possible remedial alternatives for submission to DOEE. The Court has established a schedule for completion of
the RI and FS, and approval by the DOEE, by May 6, 2019.

Upon DOEE’s approval of the final RI and FS Reports, Pepco and Generation will have satisfied their obligations under the Consent Decree. At that point, DOEE
will prepare a Proposed Plan regarding further response actions. After considering public comment on the Proposed Plan, DOEE will issue a Record of Decision
identifying  any  further  response  actions  determined  to  be  necessary.  PHI,  Pepco  and  Generation  have  determined  that  a  loss  associated  with  this  matter  is
probable and have accrued an estimated liability, which is included in the table above.

Anacostia  River Tidal Reach (Exelon,  PHI and Pepco). Contemporaneous  with the  Benning  RI/FS  being  performed  by  Pepco  and  Generation,  DOEE and
certain  federal  agencies  have  been  conducting  a  separate  RI/FS  focused  on  the  entire  tidal  reach  of  the  Anacostia  River  extending  from  just  north  of  the
Maryland-D.C.  boundary  line  to  the  confluence  of  the  Anacostia  and  Potomac  Rivers.  In  March  2016,  DOEE  released  a  draft  of  the  river-wide  RI  Report  for
public  review  and  comment.  The  river-wide  RI  incorporated  the  results  of  the  river  sampling  performed  by  Pepco  and  Pepco  Energy  Services  as  part  of  the
Benning  RI/FS,  as  well  as  similar  sampling  efforts  conducted  by  owners  of  other  sites  adjacent  to  this  segment  of  the  river  and  supplemental  river  sampling
conducted  by  DOEE’s contractor.  DOEE asked  Pepco,  along  with parties  responsible  for  other  sites along  the  river,  to  participate  in a  “Consultative  Working
Group” to provide input into the process for future remedial actions addressing the entire tidal reach of the river and to ensure proper coordination with the other
river  cleanup  efforts  currently  underway,  including  cleanup  of  the  river  segment  adjacent  to  the  Benning  Road  site  resulting  from  the  Benning  RI/FS.  Pepco
responded that it will participate in the Consultative Working Group, but its participation is not an acceptance of any financial responsibility beyond the work that
will be performed at the Benning Road site described above. In April 2018, DOEE released a draft remedial investigation report for public review and comment.
Pepco  submitted  written  comments  to  the  draft  RI  and  participated  in  a  public  hearing.  Pepco  continues  outreach  efforts  as  appropriate  to  the  agencies,
governmental officials, community organizations and other key stakeholders. In May 2018 the District of Columbia Council extended the deadline for completion
of the Record of Decision from June 30, 2018 until December 31, 2019. An appropriate liability for Pepco’s share of investigation costs has been accrued and is
included in the table above. Although Pepco has determined that it is probable that costs for remediation will be incurred, Pepco cannot estimate the reasonably
possible range of loss at this time and no liability has been accrued for those future costs. A draft Feasibility Study of potential remedies and their estimated
costs is being prepared by the agencies and is expected to be released in 2019, at which time Pepco will likely be in a better position to estimate the range of
loss.

In  addition  to  the  activities  associated  with  the  remedial  process  outlined  above,  there  is  a  complementary  statutory  program  that  requires  an  assessment  to
determine if any natural resources have been damaged as a result of the contamination that is being remediated, and, if so, that a plan be developed by the
federal, state and local Trustees responsible for those resources to restore them to their condition before injury from the environmental contaminants. If natural
resources are not restored, then compensation for the injury can be sought from the party responsible for the release of the contaminants. The assessment of
Natural  Resource  Damages  (NRD)  typically  takes  place  following  cleanup  because  cleanups  sometimes  also  effectively  restore  habitat.  During  the  second
quarter of 2018, Pepco became aware that the Trustees are in the beginning stages of this process that often takes many years beyond the remedial decision to
complete. Pepco has concluded that a loss associated with the eventual NRD assessment is reasonably possible. Due to the very early stage of the assessment
process it cannot reasonably estimate the range of loss. 

Litigation and Regulatory Matters

Asbestos Personal Injury Claims (Exelon, Generation, ComEd and PECO). Generation maintains estimated liabilities for claims associated with asbestos-
related  personal  injury  actions  in  certain  facilities  that  are  currently  owned  by  Generation  or  were  previously  owned  by  ComEd  and  PECO.  The  estimated
liabilities are recorded on an undiscounted basis and exclude the estimated legal costs associated with handling these matters, which could be material.

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Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

At December 31, 2018 and 2017 , Generation had recorded estimated liabilities of approximately $79 million and $78 million , respectively, in total for asbestos-
related bodily injury claims. As of December 31, 2018 , approximately $24 million of this amount related to 238 open claims presented to Generation, while the
remaining  $55  million  is  for  estimated  future  asbestos-related  bodily  injury  claims  anticipated  to  arise  through  2050,  based  on  actuarial  assumptions  and
analyses, which are updated on an annual basis. On a quarterly basis, Generation monitors actual experience against the number of forecasted claims to be
received and expected claim payments and evaluates whether adjustments to the estimated liabilities are necessary.

There  is a reasonable  possibility  that  Exelon  may  have  additional  exposure  to  estimated  future  asbestos-related  bodily  injury claims in  excess of  the  amount
accrued and the increases could have a material unfavorable impact on Exelon's and Generation’s financial statements.

Fund Transfer Restrictions (All Registrants). Under applicable law, Exelon may borrow or receive an extension of credit from its subsidiaries. Under the terms
of Exelon’s intercompany money pool agreement, Exelon can lend to, but not borrow from the money pool.

Under applicable law, Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE can pay dividends only from retained, undistributed or current earnings. A
significant loss recorded at Generation, ComEd, PECO, BGE, PHI, Pepco, DPL or ACE may limit the dividends that these companies can distribute to Exelon.

ComEd has agreed in connection with financings arranged through ComEd Financing III that it will not declare dividends on any shares of its capital stock in the
event that: (1) it exercises its right to extend the interest payment periods on the subordinated debt securities issued to ComEd Financing III; (2) it defaults on its
guarantee of the payment of distributions on the preferred trust securities of ComEd Financing III; or (3) an event of default occurs under the Indenture under
which the subordinated debt securities are issued. No such event has occurred.

PECO has agreed in connection with financings arranged through PEC L.P. and PECO Trust IV that PECO will not declare dividends on any shares of its capital
stock in the event that: (1) it exercises its right to extend the interest payment periods on the subordinated debentures, which were issued to PEC L.P. or PECO
Trust IV; (2) it defaults on its guarantee of the payment of distributions on the Series D Preferred Securities of PEC L.P. or the preferred trust securities of PECO
Trust IV; or (3) an event of default occurs under the Indenture under which the subordinated debentures are issued. No such event has occurred.

BGE is subject to restrictions established by the MDPSC that prohibit BGE from paying a dividend on its common shares if (a) after the dividend payment, BGE’s
equity ratio would be below 48% as calculated pursuant to the MDPSC’s ratemaking precedents or (b) BGE’s senior unsecured credit rating is rated by two of
the three major credit rating agencies below investment grade. No such event has occurred.

Pepco is subject to certain dividend restrictions established by settlements approved in Maryland and the District of Columbia. Pepco is prohibited from paying a
dividend  on  its  common  shares  if  (a)  after  the  dividend  payment,  Pepco's  equity  ratio  would  be  48% as  equity  levels  are  calculated  under  the  ratemaking
precedents of the MDPSC and DCPSC or (b) Pepco’s senior unsecured credit rating is rated by one of the three major credit rating agencies below investment
grade. No such event has occurred.

DPL is subject to certain dividend restrictions established by settlements approved in Delaware and Maryland. DPL is prohibited from paying a dividend on its
common shares if (a) after the dividend payment, DPL's equity ratio would be 48% as equity levels are calculated under the ratemaking precedents of the DPSC
and MDPSC or (b) DPL’s senior unsecured credit rating is rated by one of the three major credit rating agencies below investment grade. No such event has
occurred.

ACE  is  subject  to  certain  dividend  restrictions  established  by  settlements  approved  in  New  Jersey.  ACE  is  prohibited  from  paying  a  dividend  on  its  common
shares  if  (a)  after  the  dividend  payment,  ACE's  equity  ratio  would  be  48% as  equity  levels  are  calculated  under  the  ratemaking  precedents  of  the  NJBPU  or
(b)  ACE's  senior  unsecured  credit  rating  is  rated  by  one  of  the  three  major  credit  rating  agencies  below  investment  grade.  ACE  is  also  subject  to  a  dividend
restriction  which  requires  ACE  to  obtain  the  prior  approval  of  the  NJBPU  before  dividends  can  be  paid  it  its  equity  as  a  percent  of  its  total  capitalization,
excluding securitization debt, falls below 30% . No such events have occurred.

Conduit  Lease  with  City of Baltimore  (Exelon  and BGE). On  September  23,  2015, the  Baltimore City Board  of Estimates  approved  an increase in annual
rental fees for access to the Baltimore City underground conduit system

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Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

effective November 1, 2015, from $12 million to $42 million , subject to an annual increase thereafter based on the Consumer Price Index. BGE subsequently
entered  into  litigation  with  the  City  regarding  the  amount  of  and  basis  for  establishing  the  conduit  fee.  On  November  30,  2016,  the  Baltimore  City  Board  of
Estimates approved a settlement agreement entered into between BGE and the City to resolve the disputes and pending litigation related to BGE's use of and
payment for the underground  conduit system. As a result of the settlement,  the parties entered  into a six-year lease that reduces the annual expense  to  $25
million in the first three years and caps the annual expense in the last three years to not more than $29 million . BGE recorded a decrease to Operating and
maintenance expense in the fourth quarter of 2016 of approximately $28 million for the reversal of the previously higher fees accrued as well as the settlement of
prior year disputed fee true-up amounts.

City of Everett Tax Increment Financing Agreement (Exelon and Generation). On April 10, 2017, the City of Everett petitioned the Massachusetts Economic
Assistance Coordinating Council (EACC) to revoke the 1999 tax increment financing agreement (TIF Agreement) relating to Mystic 8 & 9 on the grounds that the
total  investment  in  Mystic  8  &  9  materially  deviates  from  the  investment  set  forth  in  the  TIF  Agreement.    On  October  31,  2017,  a  three-member  panel  of  the
EACC  conducted  an  administrative  hearing  on  the  City’s  petition.  On  November  30,  2017,  the  hearing  panel  issued  a  tentative  decision  denying  the  City’s
petition, finding that there was no material misrepresentation that would justify revocation of the TIF Agreement. On December 13, 2017, the tentative decision
was adopted by the full EACC. On January 12, 2018, the City filed a complaint in Massachusetts Superior Court requesting, among other things, that the court
set aside the EACC’s decision, grant the City’s request to decertify the Project and the TIF Agreement, and award the City damages for alleged underpaid taxes
over  the  period  of  the  TIF  Agreement.  Generation  vigorously  contested  the  City’s  claims  before  the  EACC  and  will  continue  to  do  so  in  the  Massachusetts
Superior  Court proceeding.  Generation  continues  to believe that  the City’s claim lacks merit. Accordingly,  Generation  has not  recorded  a liability for payment
resulting from such a revocation, nor can Generation estimate a reasonably possible range of loss, if any, associated with any such revocation.  Further, it is
reasonably  possible  that  property  taxes  assessed  in  future  periods,  including  those  following  the  expiration  of  the  current  TIF  Agreement  in  2019,  could  be
material to Generation’s financial statements.

General  (All  Registrants).  The  Registrants  are  involved  in  various  other  litigation  matters  that  are  being  defended  and  handled  in  the  ordinary  course  of
business. The assessment of whether a loss is probable or a reasonable possibility, and whether the loss or a range of loss is estimable, often involves a series
of  complex  judgments  about  future  events.  The  Registrants  maintain  accruals  for  such  losses  that  are  probable  of  being  incurred  and  subject  to  reasonable
estimation.  Management  is  sometimes  unable  to  estimate  an  amount  or  range  of  reasonably  possible  loss,  particularly  where  (1)  the  damages  sought  are
indeterminate,  (2)  the  proceedings  are  in  the  early  stages,  or  (3)  the  matters  involve  novel  or  unsettled  legal  theories.  In  such  cases,  there  is  considerable
uncertainty regarding the timing or ultimate resolution of such matters, including a possible eventual loss.

23. Supplemental Financial Information (All Registrants)

Supplemental Statement of Operations Information

The  following  tables  provide  additional  information  about  the  Registrants’  Consolidated  Statements  of  Operations  and  Comprehensive  Income  for  the  years
ended December 31, 2018 , 2017 and 2016 .

For the year ended December 31, 2018

Successor

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

$

919

$

114

$

243

$

131

$

94

$

337

$

316

$

21

$ —

557

247

60

273

130

39

30

27

11

15

16

1

143

17

—

94

24

—

58

32

5

—

3

—

3

2

—

Taxes other than income

Utility (a)

Property

Payroll

Other

Total taxes other than income

$

1,783

$

556

$

311

$

163

$

254

$

455

$

379

$

56

$

5

436

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Taxes other than income

Utility (a)

Property

Payroll

Other

Total taxes other than income

Taxes other than income  

Utility (a)

Property

Payroll

$

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For the year ended December 31, 2017

Successor

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

$

$

898   $
545  
230  
58  
1,731   $

126   $
269  
121  
39  
555   $

240   $
28  
26  
2  
296   $

125   $
14  
15  
—  
154   $

89   $
132  
15  
4  

240

$

318   $
101  
26  
7  
452   $

300   $
62  
6  
3  

18   $ —
32  
4  
3  

1

2

3

371

$

57

$

6

For the year ended December 31, 2016

Successor

Predecessor

March 24, 2016 to
December 31, 2016

January 1, 2016 to
March 23, 2016

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

753   $
483  
226  
114  

122   $
246  
117  
21  

242   $
27  
28  
(4)  

136   $
13  
15  
—  

85   $
123  
17  
4  

312   $
53  
8  
4  

18   $ —   $
31  
5  
1  

3  
3  
1  

253   $
73  
23  
5  

78

18

8

Other
Total taxes other than
income
__________ 
(a) Generation’s  utility  tax  represents  gross  receipts  tax  related  to  its  retail  operations  and  ComEd’s,  PECO’s,  BGE’s,  Pepco's,  DPL's  and  ACE's  utility  taxes  represent
municipal  and  state  utility  taxes  and  gross  receipts  taxes  related  to  their  operating  revenues.  The  offsetting  collection  of  utility  taxes  from  customers  is  recorded  in
revenues in the Registrants’ Consolidated Statements of Operations and Comprehensive Income.

1,576   $

354   $

293   $

164   $

506   $

105

377

229

55

$

$

$

$

$

7

1

437

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

For the year ended December 31, 2018

Successor

Other, Net

Decommissioning-related activities:

Net realized income on NDT funds (a)

Regulatory agreement units

$

Non-regulatory agreement units

Net unrealized losses on NDT funds

Regulatory agreement units

Non-regulatory agreement units

Net unrealized losses on pledged assets

Zion Station decommissioning

Regulatory offset to NDT fund-related
activities (b)

Total decommissioning-related activities

Investment income
Interest income related to uncertain income tax
positions

AFUDC—Equity

Non-service net periodic benefit cost

Other

Other, net

506   $
302  

506   $
302  

—   $
—  

—   $ —   $
—  

—  

—   $
—  

—   $ —   $ —
—  
—  

—

(715)  
(483)  

(8)  

171  

(227)

43  

5  
69  
(47)  
45  

(715)

(483)

(8)

171  

(227)

32  

1
—  
—  
16  

—  
—  

—  

—  

—
—  

—
19  
—  
14  

—  
—  

—  

—  

—
1  

—
7  
—  
—  

$

(112)

$

(178)

$

33

$

8

$

438

—  
—  

—  

—  
—  
1  

—  
18  
—  
—  
19   $

—  
—  

—  

—  

—
4  

—  
25  
—  
14  

—  
—  

—  

—  

—
2  

—  
22  
—  
7  

—  
—  

—  

—  

—
1  

—  
2  
—  
7  

43

$

31

$

10

$

—

—

—

—

—

—

—

1

—

1

2

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
 
 
   
   
   
   
   
   
   
   
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

For the year ended December 31, 2017

Successor

Other, Net

Decommissioning-related activities:

Net realized income on NDT funds (a)

Regulatory agreement units

$

Non-regulatory agreement units

Net unrealized gains on NDT funds

Regulatory agreement units

Non-regulatory agreement units

Net unrealized losses on pledged assets

Zion Station decommissioning

Regulatory offset to NDT fund-related
activities (b)

Total decommissioning-related activities

Investment income
Interest income (expense) related to uncertain
income tax positions
Benefit related to uncertain income tax positions
(c)

AFUDC—Equity

Non-service net periodic benefit cost

Other

Other, net

488   $
209  

488   $
209  

—   $
—  

—   $ —   $
—  

—  

—   $
—  

—   $ —   $ —
—  
—  

—

455  
521  

(10)  

(724)  

939

8  

3

2  
73  
(109)  
31  

455  
521  

(10)

(724)

939

6  

(1)

—  
—  
—  
4  

—  
—  

—  

—  

—
—  

—

—  
12  
—  
10  

—  
—  

—  

—  

—
—  

—

—  
9  
—  
—  

—  
—  

—  

—  

—
—  

—  

—  
16  
—  
—  

$

947

$

948

$

22

$

9

$

16

$

439

—  
—  

—  

—  
—  
2  

—  

—  
36  
—  
16  
54   $

—  
—  

—  

—  

—
1  

—  

—  
23  
—  
8  

—  
—  

—  

—  

—
—  

—  

—  
7  
—  
7  

32

$

14

$

—

—

—

—

—

—

—

—

6

—

1

7

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
 
Table of Contents

Other, Net
Decommissioning-related
activities:

Net realized income on NDT
funds (a)

Regulatory agreement
units
Non-regulatory
agreement units

Net unrealized gains on NDT
funds

Regulatory agreement
units
Non-regulatory
agreement units
Net unrealized losses on
pledged assets
Zion Station
decommissioning
Regulatory offset to NDT
fund-related activities (b)

Total decommissioning-related
activities

Investment income (loss)

Long-term lease income
Interest income (expense)
related to uncertain income tax
positions
Penalty related to uncertain
income tax positions (c)

AFUDC—Equity
Non-service net periodic
benefit cost

Loss on debt extinguishment

Other

Other, net

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

For the year ended December 31, 2016

Successor

Predecessor

March 24, 2016 to
December 31, 2016    

January 1, 2016 to
March 23, 2016

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

$

237   $

237   $

—   $

—   $ —   $

—   $ —   $ —   $

126  

126  

—  

—  

—  

—  

—  

—  

216  

194  

(1)  

(372)  

400
17  
4  

13  

(106)  
64  

(116)  
(3)  
24  

216  

194  

(1)

(372)

400

8  
—  

—  

—  
—  

—  

(2)

(5)

—  

—  

—  

—  

—
—  
—  

—  

(86)  
14  

—  
—  
7  

—  

—  

—  

—  

—
(1)  
—  

—  

—  
8  

—  
—  
1  

—  

—  

—  

—  

—
2  
—  

—  

—  
19  

—  
—  
—  

—  

—  

—  

—  

—
1  
—  

1  

—  
19  

—  
—  
15  

—  

—  

—  

—  

—
—  
—  

—  

—  
5  

—  
—  
8  

$

297

$

401

$

(65)

$

8

$

21

$

36

$

13

$

440

—  

—  

—  

—  

—  
1  
—  

—  

—  
6  

—  
—  
2  
9   $

—     $

—    

—    

—    

—    

—    

—    

1
—    

(1)

—    

23

—    
—    

—

—

—

—

—

—

—

—

—

—

—

7

—

—

21

44

    $

(11)

(4)

 
 
   
   
   
   
   
   
   
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
   
   
   
   
   
   
   
   
     
 
   
   
   
   
   
   
   
   
     
 
   
   
   
   
   
   
   
   
     
 
   
   
   
   
   
   
   
   
     
 
   
   
   
   
   
   
   
   
     
 
 
   
   
   
 
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

__________
(a)
(b)

Includes investment income and realized gains and losses on sales of investments within the NDT funds.
Includes the elimination of decommissioning-related activities for the Regulatory Agreement Units, including the elimination of net income taxes related to all NDT fund
activity for these units. See Note 15 — Asset Retirement Obligations for additional information regarding the accounting for nuclear decommissioning.
(c) See Note 14 — Income Taxes for additional information on the penalty related to the Tax Court’s decision on Exelon’s like-kind exchange tax position.

Supplemental Cash Flow Information

The following tables provide additional information regarding the Registrants’ Consolidated Statements of Cash Flows for the years ended December 31, 2018 ,
2017 and 2016 .

For the year ended December 31, 2018

Successor

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Depreciation, amortization and accretion

Property, plant and equipment

$

Regulatory assets

Amortization of intangible assets, net
Amortization of energy contract assets and
liabilities (a)

Nuclear fuel (b)

ARO accretion (c)

Total depreciation, amortization and accretion $

3,740   $
555  
58  

14  
1,115  
489  
5,971   $

1,748   $
—  
49  

14  
1,115  
489  
3,415   $

820   $
120  
—  

—  
—  
—  

940

$

274   $
27  
—  

—  
—  
—  
301   $

335   $
148  
—  

—  
—  
—  

483

$

480   $
260  
—  

—  
—  
—  
740   $

218   $
167  
—  

131   $
51  
—  

—  
—  
—  

—  
—  
—  

94

42

—

—

—

—

385

$

182

$

136

For the year ended December 31, 2017

Successor

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Depreciation, amortization and accretion
Property, plant and equipment

$

Regulatory assets

Amortization of intangible assets, net

Amortization of energy contract assets and
liabilities (a)

Nuclear fuel (b)

ARO accretion (c)
Total depreciation, amortization and accretion $

3,293   $
478  
57  

35  
1,096  
468  

1,409   $
—  
48  

35  
1,096  
468  

777   $
73  
—  

261   $
25  
—  

312   $
161  
—  

—  
—  
—  

—  
—  
—  

—  
—  
—  

5,427

$

3,056

$

850

$

286

$

473

$

457   $
218  
—  

—  
—  
—  
675   $

203   $
118  
—  

124   $
43  
—  

—  
—  
—  

—  
—  
—  

89

57

—

—

—

—

321

$

167

$

146

441

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Depreciation, amortization and accretion

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

For the year ended December 31, 2016

Successor

Predecessor

March 24, 2016 to
December 31, 2016    

January 1, 2016 to
March 23, 2016

3,477   $
407  

1,835   $
—  

708   $
67  

244   $
26  

299   $
124  

175   $
120  

110   $
47  

82   $
83  

325     $
190    

52  

44  

—  

—  

—  

—  

—  

—  

—    

35  
1,159  
446  

35  
1,159  
446  

—  
—  
—  

—  
—  
—  

—  
—  
—  

—  
—  
—  

—  
—  
—  

—  
—  
—  

—    
—    
—    

94

58

—

—

—

—

$

5,576   $

3,519

$

775

$

270

$

423

$

295

$

157

$

165   $

515     $

152

Included in Operating revenues or Purchased power and fuel in the Registrants’ Consolidated Statements of Operations and Comprehensive Income.
Included in Purchased power and fuel expense in the Registrants’ Consolidated Statements of Operations and Comprehensive Income.
Included in Operating and maintenance expense in the Registrants’ Consolidated Statements of Operations and Comprehensive Income.

442

Property, plant and
equipment
Regulatory assets

$

Amortization of
intangible assets,
net
Amortization of
energy contract
assets and liabilities
(a)

Nuclear fuel (b)

ARO accretion (c)
Total depreciation,
amortization and
accretion
__________
(a)
(b)
(c)

 
 
   
   
   
   
   
   
   
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
   
   
   
   
   
   
     
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Cash paid (refunded) during the year:

Interest (net of amount capitalized)

Income taxes (net of refunds)

Other non-cash operating activities:

Pension and non-pension postretirement benefit
costs
Loss (gain) from equity method investments

Provision for uncollectible accounts

Provision for excess and obsolete inventory

Stock-based compensation costs

Other decommissioning-related activity (a)

Energy-related options (b)
Amortization of regulatory asset related to debt
costs
Amortization of rate stabilization deferral

Amortization of debt fair value adjustment

Merger-related commitments (c)

Severance costs

Asset retirement costs

Amortization of debt costs

Discrete impacts from EIMA and FEJA (d)
Long-term incentive plan

Other

Total other non-cash operating activities

Non-cash investing and financing activities:

Change in capital expenditures not paid

Change in PPE related to ARO update

Dividends on stock compensation

$

$

$

$

Acquisition of land
__________ 
(a)

For the year ended December 31, 2018

Successor

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

1,421   $
95  

369   $
746  

332   $
(153)  

125   $
(2)  

94   $
14  

250   $

(32)

123   $
41  

56   $
(6)  

61

(12)

583   $
28  
159  
24  
75  
(2)  
10  

8  
14  
(15)  
—  
35  
20  
36  
28  
140  
(19)  

204   $
30  
48  
20  
—  

(2)
10  

—  
—  

(12)
—  
9  
—  
14  
—  
—  

(23)

177   $
—  
40  
3  
—  
—  
—  

18   $
—  
33  
—  
—  
—  
—  

59   $
—  
10  
—  
—  
—  
—  

3  
—  
—  
—  
—  
—  
5  
28  
—  
(14)  

1  
—  
—  
—  
—  
—  
2  
—  
—  
(3)  

—  
—  
—  
—  
—  
—  
1  
—  
—  
(12)  

1,124

$

298

$

242

$

51

$

58

$

(69)   $
(107)  
6  
3  

(199)

  $

(130)

—  
—  

11   $
7  
—  
—  

(12)   $
—  
—  
—  

50   $
1  
—  
—  

67   $

(1)
28  
—  
—  
—  
—  

4  
14  

(3)
5  
—  
20  
3  
—  
—  
6  
143   $

93   $
15  
—  
3  

15   $
—  
11  
—  
—  
—  
—  

2  
14  
—  
—  
—  
22  
2  
—  
—  
(6)  
60   $

20   $
12  
—  
—  

6   $
—  
6  
—  
—  
—  
—  

1  
—  
—  
5  
—  
(1)  
—  
—  
—  
7  
24   $

22   $
2  
—  
—  

12

—

11

—

—

—

—

1

—

—

—

—

(1)

1

—

—

—

24

46

1

—

3

Includes the elimination of decommissioning-related activities for the Regulatory Agreement Units, including the elimination of operating revenues, ARO accretion, ARC
amortization, investment income and income taxes related to all NDT fund activity for these units. See Note 15 — Asset Retirement Obligations for additional information
regarding the accounting for nuclear decommissioning.
Includes option premiums reclassified to realized at the settlement of the underlying contracts and recorded to results of operations.

(b)
(c) See Note 5 - Mergers, Acquisitions and Dispositions for additional information.
(d) Reflects the change in ComEd's distribution and energy efficiency formula rates. See Note 4 — Regulatory Matters for additional information.

443

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
   
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

$

$

Cash paid (refunded) during the year:

Interest (net of amount capitalized)

Income taxes (net of refunds)

Other non-cash operating activities:
Pension and non-pension postretirement
benefit costs
Loss (gain) from equity method investments

Provision for uncollectible accounts

Provision for excess and obsolete inventory

Stock-based compensation costs

Other decommissioning-related activity (a)

Energy-related options (b)
Amortization of regulatory asset related to
debt costs
Amortization of rate stabilization deferral

Amortization of debt fair value adjustment

Merger-related commitments (c)

Severance costs

Amortization of debt costs

Discrete impacts from EIMA and FEJA (d)

Vacation accrual adjustment (e)
Long-term incentive plan

Change in environmental liabilities

Other

Total other non-cash operating activities

Non-cash investing and financing
activities:
Change in capital expenditures not paid

Change in PPE related to ARO update

$

$

Non-cash financing of capital projects

Indemnification of like-kind exchange
position (f)
Dividends on stock compensation

Dissolution of financing trust due to long-
term debt retirement

For the year ended December 31, 2017

Successor

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

2,430   $
540  

391   $
337  

307   $
83  

103   $
47  

96   $
(2)  

236   $

(144)

114   $
(104)  

49   $
(49)  

59

(2)

643   $
32  
125  
56  
88  
(313)  
7  

9  
(10)  
(18)  
—  
35  
64  
(52)  
(68)  
109  
44  
(30)  

227   $
33  
38  
51  
—  

(313)

7  

—  
—  

(12)
—  
31  
37  
—  

(35)
—  
44  
4  

176   $
—  
34  
3  
—  
—  
—  

29   $
—  
26  
—  
—  
—  
—  

4  
—  
—  
—  
—  
5  
(52)  
(12)  
—  
—  
6  

1  
—  
—  
—  
—  
2  
—  
—  
—  
—  
(4)  

721

$

112

$

164

$

54

$

62   $
—  
8  
—  
—  
—  
—  

—  
7  
—  
—  
—  
2  
—  
—  
—  
—  
(14)  
65   $

42   $
29  
16  

—  
7  

8  

73   $

29  
16  

—  
—  

—  

(61)   $
—  
—  

22   $
—  
—  

23   $
—  
—  

21  
—  

—  

—  
—  

—  

—  
—  

8  

444

94   $

(1)
19  
2  
—  
—  
—  

4  

(17)

(6)

(8)
3  
4  
—  

(8)
—  
—  

(28)

25   $
—  
8  
1  
—  
—  
—  

13   $
—  
3  
1  
—  
—  
—  

2  
(17)  
—  
(6)  
—  
2  
—  
(8)  
—  
—  
(13)  

1  
—  
—  
(2)  
—  
—  
—  
—  
—  
—  
(7)  

58

$

(6)

$

9

$

  $

(12)
—  
—  

—  
—  

—  

5   $
—  
—  

—  
—  

—  

4   $
—  
—  

—  
—  

—  

13

—

8

—

—

—

—

1

—

—

—

—

1

—

—

—

—

(6)

17

(13)

—

—

—

—

—

 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Fair value adjustment of long-term debt due
to retirement
Fair value of pension and OPEB obligation
transferred in connection with FitzPatrick
__________ 
(a)

(5)

—  

—  

33  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—

—

Includes the elimination of decommissioning-related activities for the Regulatory Agreement Units, including the elimination of operating revenues, ARO accretion, ARC
amortization, investment income and income taxes related to all NDT fund activity for these units. See Note 15 — Asset Retirement Obligations for additional information
regarding the accounting for nuclear decommissioning.
Includes option premiums reclassified to realized at the settlement of the underlying contracts and recorded to results of operations.

(b)
(c) See Note 5 - Mergers, Acquisitions and Dispositions for additional information.
(d) Reflects the change in ComEd's distribution and energy efficiency formula rates . See Note 4 — Regulatory Matters for additional information.
(e) On December 1, 2017, Exelon adopted a single, standard vacation accrual policy for all non-represented, non-craft (represented and craft policies remained unchanged)
employees effective January 1, 2018.  To reflect the new policy, Exelon recorded a one-time, $68 million pre-tax credit to expense to reverse 2018 vacation cost originally
accrued throughout 2017 that will now be accrued ratably over the year in 2018.

(f) See Note 14 — Income Taxes for additional information on the like-kind exchange tax position.

For the year ended December 31, 2016

Successor

Predecessor

March 24, 2016 to
December 31,
2016

January 1, 2016 to
March 23, 2016

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

Cash paid (refunded) during
the year:
Interest (net of amount
capitalized)
Income taxes (net of refunds)

Other non-cash operating
activities:
Pension and non-pension
postretirement benefit costs
Loss from equity method
investments
Provision for uncollectible
accounts
Stock-based compensation
costs
Other decommissioning-related
activity (a)

Energy-related options (b)
Amortization of regulatory asset
related to debt costs
Amortization of rate stabilization
deferral
Amortization of debt fair value
adjustment
Merger-related commitments (c)
(d)

Severance costs

Discrete impacts from EIMA (e)
Amortization of debt costs

$

1,340   $
(441)  

339   $
435  

298   $
(444)  

104   $
64  

92   $
31  

118   $
216  

47   $
115  

62   $
200  

209     $
258    

$

619   $

218   $

166   $

33   $

67   $

31   $

18   $

15   $

86     $

24  

155  

111  

(384)  
(11)  

9  

76  

(11)  

558  
99  
8  
35  

25  

19  

—  

(384)

(11)

—  

—  

(11)

53  
22  
—  
17  

—  

41  

—  

—  
—  

4  

—  

—  

—  
—  
8  
4  

—  

30  

—  

—  
—  

1  

—  

—  

—  
—  
—  
3  

445

—  

1  

—  

—  
—  

—  

—  

—  
—  

2  

81  

(12)  

—  

—  
—  
—  
1  

—  

125  
—  
—  
—  

—  

—  

—  

29  

23  

32  

—  

—  
—  

1  

2  

—  

82  
—  
—  
—  

—  

—  
—  

1  

—  

—  

110  
—  
—  
—  

—    

65    

—    

—    
—    

3    

(5)

—    

317    
56    
—    
1    

43

11

23

—

16

3

—

—

1

5

—

—

—

—

—

 
 
 
   
   
   
   
   
   
   
 
   
 
 
   
 
 
 
 
 
 
 
 
 
   
 
   
   
   
   
   
   
   
   
     
 
   
   
   
   
   
   
   
   
     
 
 
   
 
Table of Contents

Provision for excess and obsolete
inventory
Lower of cost or market inventory
adjustment
Baltimore City Conduit Lease
Settlement
Cash Working Capital Order

Asset retirement costs

Long-term incentive plan

Other

Total other non-cash operating
activities
Non-cash investing and
financing activities:
Change in capital expenditures
not paid
Change in PPE related to ARO
update
Indemnification of like-kind
exchange position (g)

Dividends on stock compensation
Non-cash financing of capital
projects

Sale of Upstream assets (c)

Pending FitzPatrick Acquisition (h)
Fair value of net assets
contributed to Generation in
connection with the PHI merger,
net of cash
Fair value of net assets
distributed to Exelon in
connection with the PHI Merger,
net of cash (c)(f)
Fair value of pension obligation
transferred in connection with the
PHI Merger, net of cash (c)(f)
Assumption of member purchase
liability
Assumption of merger
commitment liability
__________  
(a)

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

12  

37  

(28)

(13)

2  
70  

(35)

6  

36  

—  
—  
—  
—  
25  

4  

—  

—  
—  
—  
—  
(12)  

—  

1  

—  
—  
—  
—  
(3)  

—  

—  

(28)  
(13)  
—  
—  
(21)  

3  

—  

—  
—  
—  
—  
(3)  

1  

—  

—  
—  
1  
—  
(14)  

1  

—  

—  
—  
2  
—  
(6)  

1    

—    

—    
—    
2    
—    
(11)    

$

1,333

$

15

$

215

$

65

$

88

$

175   $ 114   $ 155   $

515     $

$

(128)

  $

50   $

(91)   $

(11)   $ (86)   $

27   $ (12)   $

11   $

21     $

191  

—  
6  

95  
37  

(54)

191  

—  
—  

95  
37  
(54)  

—  

158  
—  

—  
—  
—  

—  

—  
—  

—  
—  
—  

—  

—  
—  

—  
—  
—  

—  

—  
—  

—  
—  
—  

—  

—  
—  

—  
—  
—  

—  

—  
—  

—  
—  
—  

—    

—    
—    

—    
—    
—    

—  

119  

—  

—  

—  

—  

—  

—  

—    

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

127    

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

33  

—  

—  

—  

—  

—  

—  

53    

29    

33    

1

—

—

—

—

—

(3)

46

11

—

—

—

—

—

—

—

—

—

—

—

Includes  the  elimination  of  NDT  fund  activity  for  the  Regulatory  Agreement  Units,  including  the  elimination  of  operating  revenues,  ARO  accretion,  ARC  amortization,
investment income and income taxes related to all NDT fund activity for these units. See Note 15 — Asset Retirement Obligations for additional information regarding the
accounting for nuclear decommissioning.
Includes option premiums reclassified to realized at the settlement of the underlying contracts and recorded to results of operations.

(b)
(c) See Note 5 - Mergers, Acquisitions and Dispositions for additional information.
(d) Excludes  $5 million of  forgiveness  of  Accounts  receivable  related  to  merger  commitments  recorded  in  connection  with  the  PHI  Merger,  the  balance  is  included  within

Provision for uncollectible accounts.

(e) Reflects the change in distribution rates pursuant to EIMA, which allows for the recovery of costs by a utility through a pre-established performance-based formula rate.

See Note 4 — Regulatory Matters for additional information.

446

 
 
 
 
   
   
   
   
   
   
   
   
     
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(f)

Immediately  following  closing  of  the  PHI  Merger,  the  net  assets  associated  with  PHI’s  unregulated  business  interests  were  distributed  by  PHI  to  Exelon.  Exelon
contributed a portion of such net assets to Generation.

(g) See Note 14 — Income Taxes for additional information on the like-kind exchange tax position.
(h) Reflects the transfer of nuclear fuel to Entergy under the cost reimbursement provisions of the FitzPatrick acquisition agreements. See Note 5 - Mergers, Acquisitions and

Dispositions for additional information.

The  following  tables  provide  a  reconciliation  of  cash,  cash  equivalents  and  restricted  cash  reported  within  the  Registrants'  Consolidated  Balance  Sheets  that
sum to the total of the same amounts in their Consolidated Statements of Cash Flows.

December 31, 2018

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Cash and cash equivalents

Restricted cash
Restricted cash included in other long-term
assets
Total cash, cash equivalents and restricted
cash

$

1,349   $
247  

750   $
153  

135   $
29  

130   $
5  

7   $
6  

124   $
43  

16   $
37  

23   $
1  

185  

—  

166  

—  

—  

19  

—  

—  

$

1,781   $

903   $

330   $

135   $

13   $

186   $

53   $

24   $

7

4

19

30

Successor

December 31, 2017

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Successor

Cash and cash equivalents

$

Restricted cash
Restricted cash included in other long-term
assets
Total cash, cash equivalents and restricted
cash

898   $
207  

85  

416   $
138  

76   $
5  

271   $
4  

17   $
1  

30   $
42  

5   $
35  

2   $
—  

—  

63  

—  

—  

23  

—  

—  

$

1,190   $

554   $

144   $

275   $

18   $

95   $

40   $

2   $

December 31, 2016

Successor

Predecessor

  December 31, 2016

March 23, 2016

Cash and cash
equivalents
Restricted cash

Restricted cash included
in other long-term
assets
Total cash, cash
equivalents and
restricted cash

Exelon

Generation

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

$

635   $
253  

290   $
158  

56   $
2  

63   $
4  

23   $
24  

9   $
33  

46   $
—  

101   $
9  

170     $
43    

26  

—  

—  

—  

3  

—  

—  

23  

23    

$

914   $

448   $

58   $

67   $

50   $

42   $

46   $

133   $

236     $

319

11

18

348

December 31, 2015

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Predecessor

Cash and cash equivalents

$

Restricted cash
Restricted cash included in other long-
term assets
Total cash, cash equivalents and
restricted cash

6,502   $
205  

431   $
123  

67   $
2  

295   $
3  

9   $
24  

26   $
14  

5   $
2  

5   $
—  

5  

2  

—  

—  

3  

18  

—  

—  

$

6,712   $

556   $

69   $

298   $

36   $

58   $

7   $

5   $

447

2

6

23

31

3

12

18

33

 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
 
   
 
   
 
 
 
 
 
 
 
 
 
   
 
 
   
   
   
   
 
   
   
   
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Supplemental Balance Sheet Information

The following tables provide additional information about assets and liabilities of the Registrants at December 31, 2018 and 2017 .

December 31, 2018

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Unbilled customer revenues (a)

Allowance for uncollectible accounts (b)

$

1,656   $
(319)  

965   $

(104)

223   $
(81)  

114   $
(61)  

168   $
(20)  

186   $
(53)  

97   $
(21)  

59   $
(13)  

30

(19)

December 31, 2017

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Unbilled customer revenues (a)
Allowance for uncollectible 
accounts (b)
__________
(a) Represents unbilled portion of receivables estimated under Exelon’s unbilled critical accounting policy.
(b)

Includes the estimated allowance for uncollectible accounts on billed customer and other accounts receivable.

(73)  

(56)  

(114)

(322)

$

242   $

162   $

1,858   $

1,017   $

205   $

232   $

133   $

68   $

31

(24)  

(55)  

(21)  

(16)  

(18)

The  Utility  Registrants  are  required,  under  separate  legislation  and  regulations  in  Illinois,  Pennsylvania,  Maryland,  District  of  Columbia  and  New  Jersey,  to
purchase certain receivables from alternative retail electric and, as applicable, natural gas suppliers that participate in the utilities' consolidated billing. ComEd,
BGE,  Pepco  and  DPL  purchase  receivables  at  a  discount  to  recover  primarily  uncollectible  accounts  expense  from  the  suppliers.  PECO  and  ACE  purchase
receivables  at  face  value  and  recover  uncollectible  accounts  expense,  including  those  from  alternative  retail  electric  and  natural  gas  supplies,  through  base
distribution  rates  and  a  rate  rider,  respectively.  Exelon  and  the  Utility  Registrants  do  not  record  unbilled  commodity  receivables  under  their  POR  programs.
Purchased  billed receivables are recorded  on a net basis in Exelon’s and  the Utility Registrant's  Consolidated  Statements  of Operations  and  Comprehensive
Income and are classified in Other accounts receivable, net in their Consolidated Balance Sheets. The following tables provide information about the purchased
receivables of those companies as of December 31, 2018 and 2017 .

December 31, 2018

Exelon

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Purchased receivables

Allowance for uncollectible accounts (a)

Purchased receivables, net

Purchased receivables

Allowance for uncollectible accounts (a)

December 31, 2017

$

$

$

313   $

(34)
279   $

94   $
(17)  
77   $

74   $
(5)  
69   $

61   $
(3)  
58   $

84   $
(9)  
75   $

57   $
(5)  
52   $

8   $
(1)  
7   $

19

(3)

16

Exelon

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

298   $

(31)
267   $

87   $
(14)  
73   $

70   $
(5)  
65   $

58   $
(3)  
55   $

83   $
(9)  
74   $

56   $
(5)  
51   $

9   $
(1)  
8   $

18

(3)

15

Purchased receivables, net
__________
(a) For ComEd, BGE, Pepco and DPL, reflects the incremental allowance for uncollectible accounts recorded, which is in addition to the purchase discount. For ComEd, the
incremental uncollectible accounts expense is recovered through a rate rider. BGE, Pepco and DPL recover actual write-offs which are reflected in the POR discount rate.

$

448

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables provide additional information about Registrants' investments at December 31, 2018 and 2017 .

December 31, 2018

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Investments

Equity method investments:

Financing trusts (a)

$

Bloom

NET Power

Other equity method investments

Total equity method investments

Other investments:

Employee benefit trusts and
investments (b)
Equity investments without readily
determinable fair values
Other available for sale debt security
investments

Other

Total investments

14   $
180  
70  
3  

267

244  

72  

40  
2  

—   $

180  
70  
1  

251

49  

72  

40  
2  

$

625

$

414

$

6   $
—  
—  
—  
6

—  

—  

—  
—  
6

$

8   $
—  
—  
—  
8

17  

—  

—  
—  
25

$

—   $
—  
—  
—  
—

—   $
—  
—  
—  
—

—   $
—  
—  
—  
—

5  

—  

—  
—  
5

130  

105  

—  

—  
—  

—  

—  
—  

$

130

$

105

$

—   $
—  
—  
—  
—

—  

—  

—  
—  
— $

December 31, 2017

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Investments

Equity method investments:

Financing trusts (a)

$

Bloom

NET Power

Other equity method investments

Total equity method investments

Other investments:

Employee benefit trusts and
investments (b)
Equity investments without readily
determinable fair values
Other available for sale debt security
investments

14   $
206  
76  
1  

297

244  

62  

37  
640

$

$

Total investments
__________
(a)

—   $

206  
76  
1  

283

51  

62  

37  
433

$

6   $
—  
—  
—  
6

—  

—  

—  
6

$

8   $
—  
—  
—  
8

17  

—  

—  
25

$

—   $
—  
—  
—  
—

—   $
—  
—  
—  
—

—   $
—  
—  
—  
—

5  

—  

—  
5

132  

102  

—  

—  

—  

—  

$

132

$

102

$

—   $
—  
—  
—  
—

—  

—  

—  
— $

Includes investments in affiliated financing trusts, which were not consolidated within the financial statements of Exelon and are shown as investments in the Consolidated
Balance Sheets. See Note 1 — Significant Accounting Policies for additional information.
(b) The Registrants’ debt and equity security investments are recorded at fair market value.

449

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The following tables provide additional information about liabilities of the Registrants at December 31, 2018 and 2017 .

December 31, 2018

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Accrued expenses

Compensation-related
accruals (a)
Taxes accrued

Interest accrued

Severance accrued

Other accrued expenses

Total accrued expenses

$

$

1,191   $
412  
334  
44  
131  
2,112   $

479   $
226  
77  
26  

90
898   $

187   $
71  
105  
2  
8  
373   $

49   $
28  
33  
—  
3  
113   $

68   $
46  
39  
—  
2  

99   $
74  
50  
5  
28  

29   $
58  
25  
—  
14  

155

$

256

$

126

$

19   $
4  
8  
—  
8  

39

$

12

5

12

—

6

35

December 31, 2017

Exelon

Generation

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Accrued expenses

Compensation-related
accruals (a)
Taxes accrued

Interest accrued

Severance accrued

Other accrued expenses

Total accrued expenses

$

$

978   $
373  
328  
58  
100  
1,837   $

407   $
444  
78  
30  

63
1,022   $

158   $
60  
102  
2  
5  
327   $

64   $
15  
33  
—  
2  
114   $

58   $
71  
34  
—  
1  

106   $
61  
48  
17  
29  

29   $
68  
23  
—  
17  

164

$

261

$

137

$

17   $
4  
8  
—  
6  

35

$

11

5

12

—

5

33

__________
(a) Primarily includes accrued payroll, bonuses and other incentives, vacation and benefits.

24. Segment Information (All Registrants)

Operating segments for each of the Registrants are determined based on information used by the chief operating decision maker(s) (CODM) in deciding how to
evaluate performance and allocate resources at each of the Registrants.

Exelon has twelve reportable segments, which include Generation's six reportable segments consisting of the Mid-Atlantic, Midwest, New England, New York,
ERCOT and all other power regions referred to collectively as “Other Power Regions” and ComEd, PECO, BGE, PHI's three reportable segments consisting of
Pepco, DPL, and ACE. ComEd, PECO, BGE, Pepco, DPL and ACE each represent a single reportable segment, and as such, no separate segment information
is provided for these Registrants. Exelon, ComEd, PECO, BGE, Pepco, DPL and ACE's CODMs evaluate the performance of and allocate resources to ComEd,
PECO, BGE, Pepco, DPL and ACE based on net income.

The  basis  for  Generation's  reportable  segments  is  the  integrated  management  of  its  electricity  business  that  is  located  in  different  geographic  regions,  and
largely representative of the footprints of ISO/RTO and/or NERC regions, which utilize multiple supply sources to provide electricity through various distribution
channels (wholesale and retail). Generation's hedging strategies and risk metrics are also aligned to these same geographic regions. Descriptions of each of
Generation’s six reportable segments are as follows:

• Mid-Atlantic represents operations in the eastern half of PJM, which includes New Jersey, Maryland, Virginia, West Virginia, Delaware, the District of

Columbia and parts of Pennsylvania and North Carolina.

• Midwest represents operations in the western half of PJM and the United States footprint of MISO, excluding MISO’s Southern Region.

450

 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

•

•

•

•

New England represents operations within ISO-NE.

New York represents operations within ISO-NY.

ERCOT represents operations within Electric Reliability Council of Texas.

Other Power Regions :

•

South represents operations in the FRCC, MISO’s Southern Region, the remaining portions of the SERC not included within MISO or PJM.

• West represents operations in the WECC, including California ISO.

•

Canada represents operations across the entire country of Canada and includes AESO, OIESO and the Canadian portion of MISO.

The CODMs for Exelon and Generation evaluate the performance of Generation’s electric business activities and allocate resources based on RNF. Generation
believes that RNF is a useful measurement of operational performance. RNF is not a presentation defined under GAAP and may not be comparable to other
companies’  presentations  or  deemed  more  useful  than  the  GAAP  information  provided  elsewhere  in  this  report.  Generation’s  operating  revenues  include  all
sales  to  third  parties  and  affiliated  sales  to  the  Utility  Registrants.  Purchased  power  costs  include  all  costs  associated  with  the  procurement  and  supply  of
electricity including capacity, energy and ancillary services. Fuel expense includes the fuel costs for Generation’s owned generation and fuel costs associated
with  tolling  agreements.  The  results  of  Generation's  other  business  activities  are  not  regularly  reviewed  by  the  CODM  and  are  therefore  not  classified  as
operating  segments  or  included  in  the  regional  reportable  segment  amounts.  These  activities  include  natural  gas,  as  well  as  other  miscellaneous  business
activities that are not significant to Generation's overall operating revenues or results of operations. Further, Generation’s unrealized mark-to-market gains and
losses on economic hedging activities and its amortization of certain intangible assets and liabilities relating to commodity contracts recorded at fair value from
mergers  and  acquisitions  are  also  excluded  from  the  regional  reportable  segment  amounts.  Exelon  and  Generation  do  not  use  a  measure  of  total  assets  in
making decisions regarding allocating resources to or assessing the performance of these reportable segments.

During the first quarter of 2019, due to a change in economics in our New England region, Generation is changing the way that information is reviewed by the
CODM.  The  New  England  region  will  no  longer  be  regularly  reviewed  as  a  separate  region  by  the  CODM  nor  will  it  be  presented  separately  in  any  external
information  presented  to  third  parties.  Information  for  the  New  England  region  will  be  reviewed  by  the  CODM  as  part  of  Other  Power  Regions.  As  a  result,
beginning in the first quarter of 2019, Generation will disclose five reportable segments consisting of Mid-Atlantic, Midwest, New York, ERCOT and Other Power
Regions. Beginning in the first quarter of 2019, Other Power Regions will include:

•

South represents operations in the FRCC, MISO’s Southern Region, the remaining portions of the SERC not included within MISO or PJM.

• West represents operations in the WECC, including California ISO.

•

•

Canada represents operations across the entire country of Canada and includes AESO, OIESO and the Canadian portion of MISO.

New England represents operations within ISO-NE.

451

Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

An analysis and reconciliation of the Registrants’ reportable segment information to the respective information in the consolidated financial statements for the
years ended December 31, 2018 , 2017 , and 2016 is as follows:

Generation  (a)

ComEd

PECO

BGE

PHI (e)

Other (b)

Intersegment 
Eliminations

Exelon

Successor

Operating revenues (c) :

2018

Competitive businesses
electric revenues
Competitive businesses
natural gas revenues
Competitive businesses
other revenues
Rate-regulated electric
revenues
Rate-regulated natural gas
revenues
Shared service and other
revenues

Total operating revenues

2017

Competitive businesses
electric revenues
Competitive businesses
natural gas revenues
Competitive businesses
other revenues
Rate-regulated electric
revenues
Rate-regulated natural gas
revenues
Shared service and other
revenues

$

$

Total operating revenues

$

$

17,411   $

—   $

—   $

—   $

—   $

—   $

(1,256)   $

16,155

2,718  

308  

—  

—  

—  

—  

—  

—  

—  

—  

5,882  

2,470  

2,428  

—  

568  

741  

—  

—  

4,609  

181  

—  

—  

—  

—  

(8)  

(5)  

(45)  

(20)  

—  
20,437   $

—  
5,882   $

—  
3,038   $

—  
3,169   $

15  
4,805   $

1,948  
1,948   $

(1,960)  
(3,294)   $

2,710

303

15,344

1,470

3

35,985

15,332   $

—   $

—   $

—   $

—   $

—   $

(1,105)   $

14,227

2,575  

593  

—  

—  

—  

—  

—  

—  

—  

—  

5,536  

2,375  

2,489  

—  

495  

687  

—  

—  

4,469  

161  

—  

—  

—  

—  

—  

(1)  

(29)  

(10)  

—  
18,500   $

—  
5,536   $

—  
2,870   $

—  
3,176   $

49  
4,679   $

1,831  
1,831   $

(1,880)  
(3,025)   $

2,575

592

14,840

1,333

—

33,567

452

 
 
   
   
   
 
   
   
   
 
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
Table of Contents

2016

Competitive businesses
electric revenues
Competitive businesses
natural gas revenues
Competitive businesses
other revenues
Rate-regulated electric
revenues
Rate-regulated natural gas
revenues
Shared service and other
revenues

Total operating revenues

$

Intersegment revenues (d) :

2018

2017

2016

Depreciation and
amortization:

2018

2017

2016

Operating expenses (c) :

2018

2017

2016

Interest expense, net:

2018

2017

2016

Income (loss) before income

taxes:

2018

2017

2016

Income taxes:

2018

2017

2016

$

$

$

$

$

$

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation  (a)

ComEd

PECO

BGE

PHI (e)

Other (b)

Intersegment 
Eliminations

Exelon

Successor

$

15,400   $

—   $

—   $

—   $

—   $

—   $

(1,430)   $

13,970

2,146  

211  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

5,254  

2,531  

2,609  

3,506  

—  

463  

624  

92  

—  

—  

—  

—  

—  

(4)  

(31)  

(13)  

—  
17,757   $

—  
5,254   $

—  
2,994   $

—  
3,233   $

45  
3,643   $

1,648  
1,648   $

(1,686)  
(3,164)   $

1,269   $
1,110  
1,428  

1,797   $
1,457  
1,879  

27   $
15  
15  

940   $
850  
775  

8   $
7  
8  

301   $
286  
270  

29   $
16  
21  

483   $
473  
423  

15   $
50  
45  

1,942   $
1,824  
1,647  

740   $
675  
515  

92   $
87  
74  

19,510   $
18,001  
16,878  

4,741   $
4,214  
4,056  

2,452   $
2,215  
2,292  

2,696   $
2,562  
2,683  

4,156   $
3,911  
3,549  

1,929   $
1,742  
1,812  

432   $
440  
364  

365   $

1,455  
857  

(108)

  $

(1,376)

282  

347   $
361  
461  

832   $
984  
679  

168   $
417  
301  

106   $
105  
103  

387   $
525  
468  

74   $
218  
174  

129   $
126  
123  

466   $
538  
587  

6   $

104  
149  

453

261   $
245  
195  

432   $
578  
(58)  

35   $
217  
3  

279   $
283  
290  

(249)   $
(296)  
(555)  

(55)   $
294  
(156)  

(3,289)   $
(3,020)  
(3,159)  

—   $
—  
—  

(3,341)   $
(3,026)  
(3,164)  

—   $
—  
—  

(1)   $
(2)  
(5)  

—   $
—  
—  

2,146

207

13,869

1,166

7

31,365

1

2

5

4,353

3,828

3,936

32,143

29,619

28,106

1,554

1,560

1,536

2,232

3,782

1,973

120

(126)

753

 
 
   
   
   
 
   
   
   
 
 
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
Table of Contents

Net income (loss):

2018

2017

2016

Capital expenditures:

2018

2017

2016

Total assets:

2018

$

$

$

$

$

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Generation  (a)

ComEd

PECO

BGE

PHI (e)

Other (b)

Intersegment 
Eliminations

Exelon

Successor

443   $

2,798  
550  

2,242   $
2,259   $
3,078   $

664   $
567  
378  

2,126   $
2,250   $
2,734   $

460   $
434  
438  

849   $
732   $
686   $

313   $
307  
294  

959   $
882   $
934   $

398   $
362  
(61)  

1,375   $
1,396   $
1,008   $

(193)   $
(590)  
(398)  

43   $
65   $
113   $

(1)   $
(2)  
(5)  

—   $
—   $
—   $

2,084

3,876

1,196

7,594

7,584

8,553

47,556   $
48,457  

31,213   $
29,726  

10,642   $
10,170  

9,716   $
9,104  

21,984   $
21,247  

8,355   $
8,618  

(9,800)   $
(10,552)  

119,666

116,770

2017
__________
(a) See Note 25 — Related Party Transactions for additional information on intersegment revenues.
(b) Other primarily includes Exelon’s corporate operations, shared service entities and other financing and investment activities.
(c)

(d)

Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses in the Registrants’ Consolidated
Statements of Operations and Comprehensive Income. See Note 23 — Supplemental Financial Information for additional information on total utility taxes.
Intersegment  revenues  exclude  sales  to  unconsolidated  affiliates.  The  intersegment  profit  associated  with  Generation’s  sale  of  certain  products  and  services  by  and
between  Exelon’s  segments  is  not  eliminated  in  consolidation  due  to  the  recognition  of  intersegment  profit  in  accordance  with  regulatory  authoritative  guidance.  For
Exelon, these amounts are included in Operating revenues in the Consolidated Statements of Operations and Comprehensive Income.

(e) Amounts included represent activity for PHI's successor period, March 24, 2016 through December 31, 2018 .

454

 
 
   
   
   
 
   
   
   
 
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
Table of Contents

Successor and Predecessor PHI:

Operating revenues (a) :

December 31, 2018 - Successor

Rate-regulated electric revenues

Rate-regulated natural gas revenues

Shared service and other revenues

Total operating revenues

December 31, 2017 - Successor

Rate-regulated electric revenues

Rate-regulated natural gas revenues

Shared service and other revenues

Total operating revenues

March 24, 2016 to December 31, 2016 - Successor

Rate-regulated electric revenues

Rate-regulated natural gas revenues

Shared service and other revenues

Total operating revenues

January 1, 2016 to March 23, 2016 - Predecessor

Rate-regulated electric revenues

Rate-regulated natural gas revenues

Shared service and other revenues

Total operating revenues

Intersegment revenues:

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Depreciation and amortization:

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Operating expenses:

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Pepco

DPL

ACE

Other (b)

Intersegment 
Eliminations

PHI

$

$

$

$

$

$

$

$

$

$

$

2,239   $
—  
—  
2,239   $

2,158   $
—  
—  
2,158   $

1,675   $
—  
—  
1,675   $

511   $
—  
—  
511   $

6   $
6  
4  
1  

385   $
321  
224  
71  

1,151   $
181  
—  
1,332   $

1,139   $
161  
—  
1,300   $

850   $
92  
—  
942   $

279   $
56  
—  
335   $

8   $
8  
5  
2  

182   $
167  
120  
37  

1,236   $
—  
—  
1,236   $

1,186   $
—  
—  
1,186   $

989   $
—  
—  
989   $

268   $
—  
—  
268   $

3   $
2  
2  
1  

136   $
146  
128  
37  

1,919   $
1,760  
1,577  
443  

1,143   $
1,071  
952  
284  

1,087   $
1,029  
1,000  
251  

455

—   $
—  
435  
435   $

—   $
—  
52  
52   $

5   $
—  
45  
50   $

42   $
1  
—  
43   $

435   $
53  
47  
—  

37   $
42  
43  
11  

442   $
68  
33  
73  

  $

(17)
—  

(420)

4,609

181

15

(437)

  $

4,805

  $

(14)
—  

(3)

4,469

161

49

(17)

  $

4,679

  $

(13)
—  
—  

3,506

92

45

(13)

  $

3,643

  $

(4)
—  
—  

1,096

57

—

(4)

  $

1,153

(437)

  $

(19)

(13)

(4)

—   $
  $
(1)
—   $
  $

(4)

15

50

45

—

740

675

515

152

(435)

(17)

(13)

(3)

  $
  $
  $
  $

4,156

3,911

3,549

1,048

 
 
 
 
 
 
 
   
   
   
   
   
 
   
   
   
   
   
 
 
   
   
   
   
   
 
 
   
   
   
   
   
 
   
   
   
   
   
 
 
   
   
   
   
   
 
   
   
   
   
   
 
 
 
 
   
   
   
   
   
 
   
   
   
   
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Pepco

DPL

ACE

Other (b)

Intersegment 
Eliminations

PHI

Interest expense, net:

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Income (loss) before income taxes:

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Income taxes:

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Net income (loss):

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Capital expenditures:

December 31, 2018 - Successor

December 31, 2017 - Successor

March 24, 2016 to December 31, 2016 - Successor

January 1, 2016 to March 23, 2016 - Predecessor

Total assets:

December 31, 2018 - Successor

December 31, 2017 - Successor

$

$

$

$

$

$

128   $
121  
98  
29  

223   $
310  
36  
47  

13   $
105  
26  
15  

210   $
205  
10  
32  

656   $
628  
489  
97  

58   $
51  
38  
12  

142   $
192  
(30)  
43  

22   $
71  
5  
17  

120   $
121  
(35)  
26  

364   $
428  
277  
72  

64   $
61  
47  
15  

87   $
103  
(51)  
5  

12   $
26  
(5)  
1  

75   $
77  
(47)  
5  

335   $
312  
218  
93  

11   $
13  
12  
11  

388   $
377  
(84)  
59  

(10)   $
15  
(23)  
(16)  

(22)   $
(91)  
(34)  
(44)  

20   $
28  
24  
11  

—   $
(1)   $
—   $
(2)   $

(408)   $
(404)   $
71   $
(118)   $

(2)   $
—   $
—   $
—   $

15   $
50   $
45   $
—   $

—   $
—   $
—  
—  

261

245

195

65

432

578

(58)

36

35

217

3

17

398

362

(61)

19

1,375

1,396

1,008

273

8,299   $
7,832  

4,588   $
4,357  

3,699   $
3,445  

10,819   $
10,600  

(5,421)   $
(4,987)  

21,984

21,247

456

 
 
 
 
 
 
 
   
   
   
   
 
 
   
   
   
   
 
 
   
   
   
   
 
 
   
   
   
   
 
 
   
   
   
   
 
 
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

__________
(a)

Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses in the Registrants’ Consolidated
Statements of Operations and Comprehensive Income. See Note 23 — Supplemental Financial Information for additional information on total utility taxes.

(b) Other primarily includes PHI’s corporate operations, shared service entities and other financing and investment activities.  For the predecessor periods presented, Other

includes the activity of PHI’s unregulated businesses which were distributed to Exelon and Generation as a result of the PHI Merger. 

The following tables disaggregate the Registrants' revenue recognized from contracts with customers into categories that depict how the nature, amount, timing,
and uncertainty of revenue and cash flows are affected by economic factors. For Generation, the disaggregation of revenues reflects Generation's two primary
products  of  power  sales  and  natural  gas  sales,  with  further  disaggregation  of  power  sales  provided  by  geographic  region.  For  the  Utility  Registrants,  the
disaggregation of revenues reflects the two primary utility services of rate-regulated electric sales and rate-regulated natural gas sales (where applicable), with
further disaggregation of these tariff sales provided by major customer groups. Exelon's disaggregated revenues are consistent with Generation and the Utility
Registrants but exclude any intercompany revenues.

Competitive Business Revenues (Generation):

Mid-Atlantic

Midwest

New England

New York

ERCOT

Other Power Regions 

Total Competitive Businesses Electric Revenues

Competitive Businesses Natural Gas Revenues 

Competitive Businesses Other Revenues (c)

Total Generation Consolidated Operating Revenues

Revenues from external customers (a)

2018

Contracts with customers  
$

5,241

$

4,527

2,660

1,723

572

870

15,593

1,524

510  

17,627

457

Other (b)

Total

Intersegment Revenues  

Total Revenues

233   $

5,474   $

190  

185  

(36)  

560  

686  

1,818  

1,194  

(202)  

4,717  

2,845  

1,687  

1,132  

1,556  

17,411  

2,718  

308  

$

13

(11)

(4)

—

1

(62)

(63)

62

1

2,810   $

20,437   $

— $

5,487

4,706

2,841

1,687

1,133

1,494

17,348

2,780

309

20,437

 
 
   
   
 
 
 
 
Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Revenues from external customers (a)

2017

Contracts with customers  
$

5,523   $

Other (b)

Total

Intersegment Revenues  

Total Revenues

(8)   $

5,515   $

25

  $

3,923  

2,064  

1,605  

641  

594  

14,350  

1,658  

744  

283  

(54)  

(38)  

317  

482  

982  

917  

(151)  

4,206  

2,010  

1,567  

958  

1,076  

15,332  

2,575  

593  

(25)

(8)

(17)

4

(27)

(48)

53

(5)

Total Generation Consolidated Operating Revenues

$

16,752   $

1,748   $

18,500   $

—   $

Revenues from external customers (a)

2016

Contracts with customers  
$

6,182   $

Other (b)

Total

Intersegment Revenues  

Total Revenues

30   $

6,212   $

(33)

  $

Table of Contents

Mid-Atlantic

Midwest

New England

New York

ERCOT

Other Power Regions 

Total Competitive Businesses Electric Revenues

Competitive Businesses Natural Gas Revenues 

Competitive Businesses Other Revenues (c)

Mid-Atlantic

Midwest

New England

New York

ERCOT

Other Power Regions 

Total Competitive Businesses Electric Revenues

Competitive Businesses Natural Gas Revenues 

Competitive Businesses Other Revenues (c)

4,007  

1,953  

1,198  

810  

670  

14,820  

1,953  

756  

395  

(175)  

10  

21  

299  

580  

193  

(545)  

4,402  

1,778  

1,208  

831  

969  

15,400  

2,146  

211  

10

(9)

(42)

6

(62)

(130)

135

(5)

5,540

4,181

2,002

1,550

962

1,049

15,284

2,628

588

18,500

6,179

4,412

1,769

1,166

837

907

15,270

2,281

206

17,757

Total Generation Consolidated Operating Revenues

$

17,529   $

228   $

17,757   $

—   $

Includes all wholesale and retail electric sales to third parties and affiliated sales to the Utility Registrants.
Includes revenues from derivatives and leases.

__________
(a)
(b)
(c) Other represents activities not allocated to a region. See text above for a description of included activities. Includes a $38 million and $52 million decrease to revenues for
the amortization of intangible assets and liabilities related to commodity contracts recorded at fair value in 2017 and 2016 , respectively, unrealized mark-to-market losses
of $262 million , $131 million , and $500 million in 2018 , 2017 , and 2016 , respectively, and elimination of intersegment revenues.

458

 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Revenues net of purchased power and fuel expense (Generation):

RNF from
external 
customers (a)

2018

Intersegment 
RNF

Mid-Atlantic

$

3,022

$

Midwest

New England

New York

ERCOT

Other Power Regions 
Total Revenues net of
purchased power and
fuel for Reportable
Segments

3,112

368

1,112

501

515

$

8,630

$

RNF from
external 
customers (a)

2016

Intersegment 
RNF

3,282

$

2,969

35   $
2  

Total
RNF
3,073   $
3,135  
354  
1,122  
258  
375  

51   $
23  

(14)
10  

(243)

(140)

  $

(313)
313  

8,317   $
427  

RNF from
external 
customers (a)

3,105

$

2,810

538

1,007

575

476

8,511

$

2017

Intersegment
RNF

109   $
10  

(24)

1  

(243)

(171)

Total
RNF
3,214   $
2,820  
514  
1,008  
332  
305  

  $

(318)
318  

8,193   $
617  

467

771

412

483

8,384

$

Total
RNF

3,317

2,971

438

752

281

336

8,095

(29)

(19)

(131)

(147)

  $

(289)
289  

$

114

299

Other (b)
Total Generation
Revenues net of
purchased power and
fuel expense
__________ 
(a)
(b) Other represents activities not allocated to a region. See text above for a description of included activities. Includes a $54 million and $57 million decrease in RNF for the
amortization of intangible assets and liabilities related to commodity contracts in  2017 and 2016 , respectively, unrealized mark-to-market losses of $319 million , $175
million , and $41 million in 2018 , 2017 , and 2016 , respectively, accelerated nuclear fuel amortization associated with the announced early plant retirements as discussed
in  Note  8  -  Early  Plant  Retirements  of  $57  million  ,  $12  million  and  $60  million  for  the  year  ended  December  31,  2018  ,  2017  ,  and  2016  and  the  elimination  of
intersegment RNF.

Includes purchases and sales from/to third parties and affiliated sales to the Utility Registrants.

8,744   $

8,810   $

—   $

—   $

—   $

8,927

8,744

8,810

8,927

832

543

$

$

$

459

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Electric and Gas Revenue by Customer Class (Utility Registrants):

Revenues from contracts with customers

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

2018

Successor

Rate-regulated electric revenues

Residential

$

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

Other (a)

Total rate-regulated electric revenues (b)

Rate-regulated natural gas revenues

Residential

Small commercial & industrial

Large commercial & industrial

Transportation

Other (c)

Total rate-regulated natural gas revenues (d)
Total rate-regulated revenues from contracts with
customers

Other revenues

Revenues from alternative revenue programs

Other rate-regulated electric revenues (e)

Other rate-regulated natural gas revenues (e)

Total other revenues
Total rate-regulated revenues for reportable
segments

2,942   $
1,487  
538  
47  
867  
5,881  

—  
—  
—  
—  
—  
—  

1,566   $
404  
223  
28  
243  
2,464  

395  
143  
1  
23  
6  
568  

1,382   $
257  
429  
28  
327  
2,423  

491  
77  
124  
—  
63  
755  

2,351   $
488  
1,124  
58  
593  
4,614  

99  
44  
8  
16  
13  
180  

1,021   $
140  
846  
32  
193  
2,232  

—  
—  
—  
—  
—  
—  

669   $
186  
100  
14  
175  
1,144  

99  
44  
8  
16  
13  
180  

661

162

178

12

227

1,240

—

—

—

—

—

—

5,881  

3,032  

3,178  

4,794  

2,232  

1,324  

1,240

(29)
30  
—  
1  

(7)  
12  
1  
6  

(26)  
13  
4  
(9)  

—  
10  
1  
11  

—  
7  
—  
7  

4  
3  
1  
8  

(4)

—

—

(4)

$

5,882   $

3,038   $

3,169   $

4,805   $

2,239   $

1,332   $

1,236

460

 
 
 
   
   
 
   
   
   
 
 
 
 
 
 
 
   
   
   
   
   
   
 
   
   
   
   
   
   
 
 
   
   
   
   
   
   
 
   
   
   
   
   
   
 
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

2017

Successor

Revenues from contracts with customers

ComEd

PECO

BGE

PHI

Pepco

DPL

ACE

Rate-regulated electric revenues

Residential

$

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

Other (a)

Total rate-regulated electric revenues (b)

Rate-regulated natural gas revenues

Residential

Small commercial & industrial

Large commercial & industrial

Transportation

Other (c)

Total rate-regulated natural gas revenues (d)
Total rate-regulated revenues from contracts with
customers

Other revenues

Revenues from alternative revenue programs

Other rate-regulated electric revenues (e)

Other rate-regulated natural gas revenues (e)

Other revenues (f)

Total other revenues
Total rate-regulated revenues for reportable
segments

2,715   $
1,363  
455  
44  
886  
5,463  

—  
—  
—  
—  
—  
—  

1,505   $
401  
223  
30  
204  
2,363  

331  
131  
1  
23  
8  
494  

1,365   $
254  
427  
31  
299  
2,376  

437  
75  
119  
—  
28  
659  

2,246   $
490  
1,086  
60  
541  
4,423  

90  
38  
8  
15  
9  
160  

964   $
137  
794  
33  
199  
2,127  

—  
—  
—  
—  
—  
—  

663   $
187  
103  
14  
163  
1,130  

90  
38  
8  
15  
9  
160  

619

166

189

13

191

1,178

—

—

—

—

—

—

5,463  

2,857  

3,035  

4,583  

2,127  

1,290  

1,178

43  
30  
—  
—  
73  

—  
12  
1  
—  
13  

124  
13  
4  
—  
141  

40  
8  
1  
47  
96  

26  
5  
—  
—  
31  

6  
3  
1  
—  
10  

8

—

—

—

8

$

5,536   $

2,870   $

3,176   $

4,679   $

2,158   $

1,300   $

1,186

461

 
 
 
   
   
 
   
   
   
 
 
 
 
 
 
 
   
   
   
   
   
   
 
   
   
   
   
   
   
 
 
   
   
   
   
   
   
 
   
   
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Revenues from contracts with customers

ComEd

PECO

BGE

Pepco

DPL

ACE

PHI

PHI

2016

Successor

Predecessor

March 24, 2016 to
December 31, 2016    

January 1, 2016 to
March 23, 2016

Rate-regulated electric revenues

Residential

$

Small commercial & industrial

Large commercial & industrial

Public authorities & electric railroads

Other (a)

Total rate-regulated electric revenues (b)

Rate-regulated natural gas revenues

Residential

Small commercial & industrial

Large commercial & industrial

Transportation

Other (c)

Total rate-regulated natural gas revenues (d)

Total rate-regulated revenues from
contracts with customers

Other revenues

Revenues from alternative revenue
programs

Other rate-regulated electric revenues (e)
Other rate-regulated natural gas revenues
(e)

Other revenues (f)

Total other revenues
Total rate-regulated revenues for reportable
segments
__________
(a)
(b)

2,603   $
1,318  
462  
45  
820  
5,248  

1,631   $
430  
234  
32  
192  
2,519  

1,504   $
276  
434  
35  
276  
2,525  

1,004   $
150  
790  
32  
190  
2,166  

672   $
188  
99  
13  
160  
1,132  

664   $
183  
201  
13  
187  
1,248  

—  
—  
—  
—  
—  
—  

309  
121  
—  
24  
9  
463  

432  
66  
114  
—  
28  
640  

—  
—  
—  
—  
—  
—  

86  
35  
6  
13  
8  
148  

—  
—  
—  
—  
—  
—  

1,779     $
400    
835    
45    
400    
3,459    

50    
21    
4    
10    
7    
92    

561

121

255

13

169

1,119

36

14

2

3

2

57

5,248  

2,982  

3,165  

2,166  

1,280  

1,248  

3,551    

1,176

(24)  
30  

—  
—  
6  

—  
12  

—  
—  
12  

53  
13  

2  
—  
68  

14  
6  

—  
—  
20  

(6)  
3  

—  
—  
(3)  

9  
—  

—  
—  
9  

43    
6    

—    
43    
92    

(26)

3

—

—

(23)

$

5,254   $

2,994   $

3,233   $

2,186   $

1,277   $

1,257   $

3,643     $

1,153

Includes revenues from transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue.
Includes operating revenues from affiliates of $ 27 million , $7 million , $8 million , $15 million , $6 million , $8 million and $3 million at ComEd, PECO, BGE, PHI, Pepco,
DPL and ACE, respectively, in 2018 , $15 million , $6 million , $5 million , $3 million , $6 million , $8 million and $2 million at ComEd, PECO, BGE, PHI, Pepco, DPL and
ACE, in 2017 , and $15 million , $7 million , $7 million , $2 million , $5 million , $7 million and $3 million at ComEd, PECO, BGE, PHI, Pepco, DPL and ACE, respectively,
in 2016 .
Includes revenues from off-system natural gas sales.
Includes  operating  revenues  from  affiliates  of  $1  million  and $21  million  at  PECO  and  BGE,  respectively,  in  2018 , $1  million  and $11  million  at  PECO  and  BGE,
respectively, in 2017 , and $1 million and $14 million at PECO and BGE, respectively, in 2016 .
Includes late payment charge revenues.
Includes operating revenues from affiliates of $47 million and $43 million at PHI in 2017 and 2016 , respectively.

(c)
(d)

(e)
(f)

462

 
 
   
   
   
   
   
 
   
 
 
 
 
 
 
 
 
   
 
   
   
   
   
   
   
     
 
   
   
   
   
   
   
     
 
 
   
   
   
   
   
   
     
 
   
   
   
   
   
   
     
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

25. Related Party Transactions (All Registrants)

Exelon

The financial statements of Exelon include related party transactions as presented in the tables below:

Operating revenues from affiliates:

Generation (a)

PECO (a)
BGE (a)
ACE (a)

Other

Total operating revenues from affiliates

Interest expense to affiliates, net:

ComEd Financing III

PECO Trust III

PECO Trust IV

BGE Capital Trust II

Total interest expense to affiliates, net

Earnings (losses) in equity method investments:

Qualifying facilities and domestic power projects

Other

Total losses in equity method investments

Payables to affiliates (current):

ComEd Financing III

PECO Trust III

Total payables to affiliates (current)

Long-term debt to financing trusts:

ComEd Financing III

PECO Trust III

PECO Trust IV

Total long-term debt to financing trusts

$

$

$

$

$

For the Years Ended
December 31,

2018

2017

2016

(2)  

—

—

—  

1  

(1)   $

13   $

6  

6  

—  

25   $

(29)   $

1  

(28)   $

$

$

$

$

—  

1

4

—  

2  

7   $

14   $

6  

6  

10  

36   $

(33)   $

1  

(32)   $

December 31,

2018

2017

4   $

1  

5   $

206   $

81  

103  

390   $

1

4

—

5

10

13

6

6

16

41

(25)

1

(24)

4

1

5

205

81

103

389

__________
(a) The  intersegment  profit  associated  with  the  sale  of  certain  products  and  services  by  and  between  Exelon’s  segments  is  not  eliminated  in  consolidation  due  to  the
recognition of intersegment profit in accordance with regulatory authoritative guidance. For Exelon, these amounts are included in operating revenues in the Consolidated
Statements of Operations. See Note 4 — Regulatory Matters for additional information.

463

 
 
 
 
 
   
   
 
   
   
 
   
   
 
 
 
 
   
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Transactions involving Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE are further described in the tables below.

Generation

The financial statements of Generation include related party transactions as presented in the tables below:

Operating revenues from affiliates:

ComEd (a)
PECO (b)
BGE (c)
Pepco (d)

DPL (e)

ACE  (f)

BSC

Other

Total operating revenues from affiliates

Purchased power and fuel from affiliates:

ComEd

BGE

Other

Total purchased power and fuel from affiliates

Operating and maintenance from affiliates:

ComEd (g)

PECO (g)

BGE (g)

Pepco

PHISCO

BSC   (h)

Other

Total operating and maintenance from affiliates

Interest expense to affiliates, net:

Exelon Corporate (i)

PCI

PECO

Total interest expense to affiliates, net:

Earnings (losses) in equity method investments

Qualifying facilities and domestic power projects

Capitalized costs

BSC   (h)

Cash distributions paid to member

Contributions from member

For the Years Ended
December 31,

2018

2017

2016

$

523

128

260

206  

120  

29  

2

—  

$

121

138

388

255  

179  

29  

1

4  

47

290

608

295

154

37

2

6

1,268   $

1,115   $

1,439

(6)   $

20  

—  

14   $

7   $

2  

2  

1  

1  

652  

(4)  

661   $

36   $

—  

—  

36   $

13   $

9  

(3)  

19   $

7   $

1  

1  

—  

1  

689  

(2)  

697   $

37   $

1  

1  

39   $

(30)   $

(33)   $

67   $

1,001   $

155   $

98   $

659   $

102   $

—

12

—

12

7

3

1

1

1

650

—

663

39

—

—

39

(25)

98

922

142

$

$

$

$

$

$

$

$

$

$

$

$

464

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Receivables from affiliates (current):

ComEd (a)

PECO (b)

BGE (c)

Pepco (d)

DPL (e)

ACE (f)

PHISCO (h)

Other

Total receivables from affiliates (current)

Intercompany money pool (current):

Exelon Corporate

PCI

Total intercompany money pool (current)

Payables to affiliates (current):

Exelon Corporate (i)

BSC (h)

ComEd

PECO (b)

Other

Total payables to affiliates (current)

Other liabilities to affiliates (current):

ComEd (a)

Long-term debt to affiliates (noncurrent):

Exelon Corporate (k)

Payables to affiliates (noncurrent):

ComEd (j)

PECO (j)

Total payables to affiliates (noncurrent)

465

December 31,

2018

2017

69   $

30  

24  

28  

7  

5  

—  

10  

28

26

24

36

12

6

1

7

173   $

140

100   $

—  

100   $

17   $

95  

19  

—  

8  

139   $

14   $

898   $

2,217   $

389  

2,606   $

—

54

54

21

74

12

4

12

123

—

910

2,528

537

3,065

$

$

$

$

$

$

$

$

$

$

 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

__________
(a) Generation  has  an ICC-approved  RFP contract  with  ComEd to  provide  a portion  of ComEd’s electricity  supply  requirements.  Generation  also sells  RECs and  ZECs to

ComEd.

(b) Generation  provides  electric  supply  to  PECO  under  contracts  executed  through  PECO’s  competitive  procurement  process.  In  addition,  Generation  has  a  ten-year

agreement with PECO to sell solar AECs.

(c) Generation provides a portion of BGE’s energy requirements under its MDPSC-approved market-based SOS and gas commodity programs.
(d) Generation provides electric supply to Pepco under contracts executed through Pepco's competitive procurement process approved by the MDPSC and DCPSC.
(e) Generation provides a portion of DPL's energy requirements under its MDPSC and DPSC approved market based SOS and gas commodity programs.
(f) Generation provides electric supply to ACE under contracts executed through ACE's competitive procurement process.
(g) Generation requires electricity for its own use at its generating stations. Generation purchases electricity and distribution and transmission services from PECO and BGE

and only distribution and transmission services from ComEd for the delivery of electricity to its generating stations.

(h) Generation  receives  a  variety  of  corporate  support  services  from  BSC  and  PHISCO,  including  legal,  human  resources,  financial,  information  technology  and  supply

(i)

management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.
The balance consists  of interest owed to Exelon Corporation related to the senior unsecured notes, as well as, expense related to certain invoices Exelon Corporation
processed on behalf of Generation.

(j) Generation has long-term payables to ComEd and PECO as a result of the nuclear decommissioning contractual construct whereby, to the extent NDT funds are greater
than the underlying ARO at the end of decommissioning, such amounts are due back to ComEd and PECO, as applicable, for payment to their respective customers. See
Note 15 — Asset Retirement Obligations for additional information.
In connection with the debt obligations assumed by Exelon as part of the Constellation merger, Exelon and subsidiaries of Generation (former Constellation subsidiaries)
assumed intercompany loan agreements that mirror the terms and amounts of the third-party debt obligations of Exelon, resulting in intercompany notes payable included
in Long-term Debt to affiliates in Generation’s Consolidated Balance Sheets and intercompany notes receivable at Exelon Corporate, which are eliminated in consolidation
in Exelon’s Consolidated Balance Sheets.

(k)

466

Table of Contents

ComEd

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The financial statements of ComEd include related party transactions as presented in the tables below:

Operating revenues from affiliates

Generation

BSC  

PECO

BGE

Total operating revenues from affiliates

Purchased power from affiliates

Generation   (a)

Operating and maintenance from affiliates

BSC   (b)

PECO

BGE

Total operating and maintenance from affiliates

Interest expense to affiliates, net:

ComEd Financing III

Capitalized costs

BSC   (b)

Cash dividends paid to parent

Contributions from parent

Prepaid voluntary employee beneficiary association trust   (c)

Receivables from affiliates (current):

Voluntary employee beneficiary association trust

Generation

Total receivables from affiliates (current)

Receivables from affiliates (noncurrent):

Generation   (d)

Payables to affiliates (current):

Generation (a)

BSC (b)

ComEd Financing III

Exelon Corporate

Total payables to affiliates (current)

Long-term debt to ComEd financing trust:

ComEd Financing III

For the Years Ended
December 31,

2018

2017

2016

$

$

$

$

$

$

$

$

$

9

$

7  

10  

1  

27   $

9

$

6  

—  

—  

15   $

529   $

108   $

265   $

1  

1  

267   $

270   $

—  

—  

270   $

13   $

13   $

135   $

459   $

500   $

118   $

422   $

651   $

7

6

1

1

15

47

225

1

1

227

13

112

369

315

2

1

12

13

December 31,

2018

2017

5   $

1   $

19  

20   $

2,217   $

2,528

55   $

56  

4  

4  

119   $

28

39

4

3

74

205   $

205

$

$

$

$

$

$

$

__________
(a) ComEd  procures  a  portion  of  its  electricity  supply  requirements  from  Generation  under  an  ICC-approved  RFP  contract.  ComEd  also  purchases  RECs  and  ZECs  from

Generation.

467

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
 
 
 
   
 
   
 
   
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(b) ComEd receives a variety of corporate support services from BSC, including legal, human resources, financial, information technology and supply management services.

All services are provided at cost, including applicable overhead. A portion of such services is capitalized.

(c) The voluntary employee benefit association trusts covering active employees are included in corporate operations and are funded by the Registrants. A prepayment to the
active welfare plans has accumulated due to actuarially determined contribution rates, which are the basis for ComEd’s contributions to the plans, being higher than actual
claim expense incurred by the plans over time. The prepayment is included in other current assets.

(d) ComEd has a long-term receivable from Generation as a result of the nuclear decommissioning contractual construct for generating facilities previously owned by ComEd.
To the extent the assets associated with decommissioning are greater than the applicable ARO at the end of decommissioning, such amounts are due back to ComEd for
payment to ComEd’s customers.

PECO

The financial statements of PECO include related party transactions as presented in the tables below:

Operating revenues from affiliates:

Generation (a)

BSC

ComEd

BGE

ACE

Total operating revenues from affiliates

Purchased power from affiliates

Generation  (b)

Operating and maintenance from affiliates:

BSC (c)

Generation

ComEd

BGE

Total operating and maintenance from affiliates

Interest expense to affiliates, net:

PECO Trust III

PECO Trust IV

Exelon Corporate

Generation

Total interest expense to affiliates, net:

Capitalized costs

BSC   (c)

Cash dividends paid to parent

Contributions from parent

For the Years Ended
December 31,

2018

2017

2016

2

$

3  

1  

1  

1  

8   $

1

$

5  

—  

1  

—  

7   $

126   $

135   $

146   $

146   $

2  

7  

1  

2  

—  

1  

156   $

149   $

6   $

6  

2  

—  

14   $

64   $

306   $

89   $

6   $

6  

—  

(1)  

11   $

59   $

288   $

16   $

3

3

1

1

—

8

287

142

2

1

1

146

6

6

—

—

12

57

277

18

$

$

$

$

$

$

$

$

$

$

468

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

Prepaid voluntary employee beneficiary association trust   (d)

Receivables from affiliates (noncurrent):

Generation (e)

Payables to affiliates (current):

Generation  (b)

BSC  (c)

Exelon Corporate

PECO Trust III

Total payables to affiliates (current)

Long-term debt to financing trusts:

PECO Trust III

PECO Trust IV

Total long-term debt to financing trusts

December 31,

2018

2017

1   $

389   $

30   $

26  

2  

1  

59   $

81   $

103  

184   $

—

537

22

29

1

1

53

81

103

184

$

$

$

$

$

$

__________
(a) PECO provides energy to Generation for Generation’s own use.
(b) PECO purchases electric supply from Generation under contracts executed through its competitive procurement process. In addition, PECO has five-year and ten-year

agreements with Generation to purchase non-solar and solar AECs, respectively.

(c) PECO receives a variety of corporate support services from BSC, including legal, human resources, financial, information technology and supply management services.

All services are provided at cost, including applicable overhead. A portion of such services is capitalized.

(d) The voluntary employee beneficiary association trusts covering active employees are included in corporate operations and are funded by the Registrants. A prepayment to
the active welfare plans has accumulated due to actuarially determined contribution rates, which are the basis for PECO’s contributions to the plans, being higher than
actual claim expense incurred by the plans over time.

(e) PECO has a long-term receivable from Generation as a result of the nuclear decommissioning contractual construct, whereby, to the extent the assets associated with

decommissioning are greater than the applicable ARO at the end of decommissioning, such amounts are due back to PECO for payment to PECO’s customers.

469

 
 
 
 
   
 
   
 
   
Table of Contents

BGE

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The financial statements of BGE include related party transactions as presented in the tables below:

Operating revenues from affiliates:

Generation   (a)

BSC  

ComEd

PECO

Total operating revenues from affiliates

Purchased power from affiliates

Generation   (b)

Operating and maintenance from affiliates:

BSC   (c)

Generation

ComEd

PECO

Total operating and maintenance from affiliates

Interest expense to affiliates, net:

BGE Capital Trust II

Capitalized costs

BSC   (c)

Cash dividends paid to parent

Contributions from parent

Receivables from affiliates (current):

Other

Payables to affiliates (current):

Generation (b)

BSC (c)

Exelon Corporate

Other

Total payables to affiliates (current)

For the Years Ended
December 31,

2018

2017

2016

$

$

$

$

$

$

$

$

$

22

$

5  

1  

1  

29   $

10

$

5  

—  

1  

16   $

257   $

384   $

157   $

152   $

3  

1  

1  

—  

—  

1  

162   $

153   $

—   $

10   $

79   $

209   $

109   $

54   $

198   $

184   $

December 31,

2018

2017

$

$

$

1   $

24   $

38  

2  

1  

65   $

13

6

1

1

21

604

130

—

1

1

132

16

36

179

61

1

24

25

1

2

52

__________
(a) BGE provides energy to Generation for Generation’s own use.  
(b) BGE procures a portion of its electricity and gas supply requirements from Generation under its MDPSC-approved market-based SOS and gas commodity programs.
(c) BGE receives a variety of corporate support services from BSC, including legal, human resources, financial, information technology and supply management services. All

services are provided at cost, including applicable overhead. A portion of such services is capitalized.

470

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
 
 
 
   
 
   
Table of Contents

  PHI

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The financial statements of PHI include related party transactions as presented in the tables below:

$

$

$

$

$

$

$

$

$

$

Operating revenues from affiliates:

BSC

PHISCO

Generation

Total operating revenues from affiliates

Purchased power from affiliates

Generation

Operating and maintenance from affiliates:

BSC (a)

Other

Total operating and maintenance from affiliates

Earnings (losses) in equity method investments:

Other

Capitalized costs:

BSC (a)

PHISCO (a)

Total capitalized costs

Cash dividends paid to parent

Contributions from parent

Payables to affiliates (current):

Generation

BGE

BSC (a)

Exelon Corporate

Other

Total payables to affiliates (current)

For the Year Ended
December 31,

Successor

For the Year Ended
December 31,

March 24, 2016 to
December 31,

2018

2017

2016

12   $

1  

2  

15   $

355   $

147   $

5  

152   $

1   $

102   $

79  

181   $

326   $

385   $

$

$

48   $

2  

—  

50   $

463   $

145   $

5  

150   $

—   $

—   $

—  

—   $

311   $

758   $

December 31,

2018

2017

40   $

—  

41  

6  

7  

94   $

44

—

1

45

486

86

3

89

—

—

—

—

273

1,251

54

1

24

6

5

90

__________
(a) PHI receives a variety of corporate support services from BSC and PHISCO, including legal, human resources, financial, information technology and supply management

services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.

471

 
 
 
 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
 
 
 
   
Table of Contents

Pepco

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The financial statements of Pepco include related party transactions as presented in the tables below:

Operating revenues from affiliates:

Generation (a)

BSC

PHISCO

Total operating revenues from affiliates

Purchased power from affiliates

Generation   (b)

Operating and maintenance:

PHISCO (c), (e)

PES (d)
Total operating and maintenance

Operating and maintenance from affiliates:

BSC   (c)

PHISCO (c), (e)
Total operating and maintenance from affiliates

Capitalized costs:

BSC   (c)

PHISCO (c)
Total capitalized costs

Cash dividends paid to parent

Contributions from parent

Receivables from affiliates (current):

DPL

Payables to affiliates (current):

Exelon Corporation

Generation (b)

BSC (c)

PHISCO (c)

Total payables to affiliates (current)

$

$

$

$

$

$

$

$

$

$

$

For the Years Ended
December 31,

2018

2017

2016

1   $

1  

4  

6   $

—   $

—  

6  

6   $

206   $

255   $

—   $

—  

—   $

89   $

137  

226   $

40   $

32  

72   $

169   $

166   $

$

$

$

219   $

29  

248   $

53   $

5  

58   $

—   $

—  

—   $

133   $

161   $

December 31,

2018

2017

1   $

1   $

28  

19  

14  

62   $

1

—

4

5

295

263

39

302

31

4

35

—

—

—

136

187

—

—

36

11

27

74

__________
(a) Pepco provides energy to Generation for Generation’s own use.  
(b) Pepco procures a portion of its electricity supply requirements from Generation under its MDPSC and DCPSC approved market based SOS commodity programs.
(c) Pepco  receives  a  variety  of  corporate  support  services  from  BSC  and  PHISCO,  including  legal,  human  resources,  financial,  information  technology  and  supply

management services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.

(d) PES performed underground transmission, distribution construction and maintenance services, including services that are treated as capital costs, for Pepco.

472

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
 
 
 
   
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(e) Due  to  the  PHI  entities'  system  conversion  to  Exelon's  accounting  systems  on  January  1,  2018,  corporate  support  services  received  from  PHISCO  are  reported  in

Operating and maintenance from affiliates in 2018.

DPL

The financial statements of DPL include related party transactions as presented in the tables below:

Operating revenues from affiliates:

BSC

PHISCO

ComEd

ACE

Other

Total operating revenues from affiliates

Purchased power from affiliates

Generation   (a)

Operating and maintenance:

PHISCO (b), (d)

PES (c)
Total operating and maintenance

Operating and maintenance from affiliates:

BSC (b)

PHISCO (b), (d)

Other

Total operating and maintenance from affiliates

Capitalized costs:

BSC (b)

PHISCO (b)

Total capitalized costs

Cash dividends paid to parent

Contributions from parent

Payables to affiliates (current):

Exelon Corporate

Generation (a)

BSC (b)

PHISCO (b)

Pepco

ACE

Total payables to affiliates (current)

__________

$

$

$

$

$

$

$

$

$

$

$

For the Years Ended
December 31,

2018

2017

2016

1   $

4  

1  

1  

1  

8   $

—   $

6  

—  

—  

2  

8   $

120   $

179   $

—   $

—  

—   $

51   $

111  

—  

162   $

28   $

25  

53   $

96   $

150   $

$

$

165   $

9  

174   $

31   $

—  

1  

32   $

—   $

—  

—   $

112   $

—   $

December 31,

2018

2017

1   $

7  

11  

12  

1  

1  

33   $

—

5

—

—

2

7

154

194

8

202

18

—

1

19

—

—

—

54

152

—

12

7

27

—

—

46

473

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
 
 
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(a) DPL  procures  a  portion  of  its  electricity  and  gas  supply  requirements  from  Generation  under  its  MDPSC  and  DPSC  approved  market  based  SOS  and  gas  commodity

programs.

(b) DPL receives a variety of corporate support services from BSC and PHISCO, including legal, human resources, financial, information technology and supply management

services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.

(c) PES performed underground transmission construction services, including services that are treated as capital costs, for DPL.
(d) Due  to  the  PHI  entities'  system  conversion  to  Exelon's  accounting  systems  on  January  1,  2018,  corporate  support  services  received  from  PHISCO  are  reported  in

Operating and maintenance from affiliates in 2018.

ACE

The financial statements of ACE include related party transactions as presented in the tables below:

Operating revenues from affiliates:

PHISCO

Other

Total operating revenues from affiliates

Purchased power from affiliates

Generation   (a)

Operating and maintenance:

PHISCO (b), (c)

Operating and maintenance from affiliates:

BSC (b)

PHISCO (b), (c)

Other

Total operating and maintenance from affiliates

Capitalized costs:

BSC (b)

PHISCO (b)

Total capitalized costs

Cash dividends paid to parent

Contributions from parent

Receivable from affiliate (current):

DPL

Payables to affiliates (current):

Generation (a)

BSC (b)

PHISCO (b)

Other

Total payables to affiliates (current)

$

$

$

$

$

$

$

$

$

$

For the Years Ended
December 31,

2018

2017

2016

2   $

1  

3   $

29   $

—   $

42   $

98  

2  

142   $

20   $

21  

41   $

59   $

67   $

$

$

$

1   $

1  

2   $

29   $

135   $

25   $

—  

3  

28   $

—   $

—  

—   $

68   $

—   $

December 31,

2018

2017

1   $

5   $

8  

13  

2  

28

$

2

1

3

37

155

15

—

3

18

—

—

—

63

139

—

6

5

18

—

29

__________
(a) ACE purchases electric supply from Generation under contracts executed through its competitive procurement process.

474

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
 
 
 
   
 
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

(b) ACE receives a variety of corporate support services from BSC and PHISCO, including legal, human resources, financial, information technology and supply management

services. All services are provided at cost, including applicable overhead. A portion of such services is capitalized.

(c) Due  to  the  PHI  entities'  system  conversion  to  Exelon's  accounting  systems  on  January  1,  2018,  corporate  support  services  received  from  PHISCO  are  reported  in

Operating and maintenance from affiliates in 2018.
26. Quarterly Data (Unaudited) (All Registrants)

Exelon

The  data  shown below, which may not equal  the  total  for the  year due  to the  effects  of rounding  and dilution,  includes all adjustments  that  Exelon considers
necessary for a fair presentation of such amounts:

Operating Revenues

Operating Income

Net Income 
Attributable to 
Common Shareholders

2018

2017

2018

2017

2018

2017

Quarter ended:

March 31

June 30

September 30

December 31

Quarter ended:

March 31

June 30

September 30

December 31

Generation

$

9,693   $

8,747   $

1,101   $

1,308   $

585   $

8,076  

9,403  

8,814  

7,665  

8,768  

8,384  

942  

1,146  

708  

300  

1,499  

1,288  

Net Income 
per Basic Share

539  

733  

152  

Net Income 
per Diluted Share

2018

2017

2018

2017

$

0.61   $

0.56  

0.76  

0.16  

1.07   $

0.10  

0.86  

1.95  

0.60   $

0.56  

0.76  

0.16  

The data shown below includes all adjustments that Generation considers necessary for a fair presentation of such amounts:

Quarter ended:

March 31

June 30

September 30

December 31

Operating Revenues

Operating Income (Loss)

Net Income (Loss) 
Attributable to 
Membership Interest

2018

2017

2018

2017

2018

2017

$

5,512   $

4,878   $

347   $

373   $

136   $

4,579  

5,278  

5,069  

4,216  

4,750  

4,657  

282  

311  

35  

(427)

497  

504  

178  

234  

(178)  

475

990

95

823

1,880

1.06

0.10

0.85

1.94

418

(235)

304

2,224

 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
 
 
   
   
 
Table of Contents

ComEd

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The data shown below includes all adjustments that ComEd considers necessary for a fair presentation of such amounts:

Operating Revenues

Operating Income

Net Income

2018

2017

2018

2017

2018

2017

$

1,512   $

1,298   $

292   $

314   $

165   $

1,398  

1,598  

1,373  

1,357  

1,571  

1,309  

288  

323  

242  

319  

404  

286  

164  

193  

141  

Quarter ended:

March 31

June 30

September 30

December 31

PECO

The data shown below includes all adjustments that PECO considers necessary for a fair presentation of such amounts:

Operating Revenues

Operating Income

Net Income

2018

2017

2018

2017

2018

2017

$

866   $

796   $

142   $

192   $

113   $

653  

757  

765  

630  

715  

729  

127  

154  

165  

137  

169  

157  

96  

126  

124  

Quarter ended:

March 31

June 30

September 30

December 31

BGE

The data shown below includes all adjustments that BGE considers necessary for a fair presentation of such amounts:

Quarter ended:

March 31

June 30

September 30

December 31

Operating Revenues

Operating Income

Net Income

2018

2017

2018

2017

2018

2017

$

977   $

951   $

177   $

228   $

128   $

662  

731  

799  

674  

738  

813  

476

85  

103  

109  

98  

124  

163  

51  

63  

71  

141

118

189

120

127

88

112

107

125

45

62

76

 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
Table of Contents

PHI

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

The data shown below includes all adjustments that PHI considers necessary for a fair presentation of such amounts:

Operating Revenues

Operating Income

Net Income Attributable to
Membership Interest

2018

2017

2018

2017

2018

2017

$

1,251   $

1,175   $

126   $

180   $

65   $

1,076  

1,361  

1,117  

1,074  

1,310  

1,121  

153  

245  

126  

148  

285  

159  

84  

187  

62  

Quarter ended:

March 31

June 30

September 30

December 31

Pepco

The data shown below includes all adjustments that Pepco considers necessary for a fair presentation of such amounts:

Operating Revenues

Operating Income

Net Income

2018

2017

2018

2017

2018

2017

$

557   $

530   $

56   $

79   $

523  

628  

531  

514  

604  

510  

85  

112  

65  

84  

149  

87  

31   $

54  

89  

36  

Quarter ended:

March 31

June 30

September 30

December 31

DPL

The data shown below includes all adjustments that DPL considers necessary for a fair presentation of such amounts:

Operating Revenues

Operating Income

Net Income

2018

2017

2018

2017

2018

2017

$

384   $

362   $

289  

328  

331  

282  

327  

330  

49   $

42  

51  

48  

78   $

41  

59  

52  

31   $

26  

33  

30  

Quarter ended:

March 31

June 30

September 30

December 31

ACE

The data shown below includes all adjustments that ACE considers necessary for a fair presentation of such amounts:

Quarter ended:

March 31

June 30

September 30

December 31

Operating Revenues

Operating Income

Net Income (Loss)

2018

2017

2018

2017

2018

2017

$

310   $

275   $

265  

406  

254  

270  

370  

271  

477

23   $

25  

84  

14  

25   $

25  

79  

28  

7   $

8  

61  

(1)  

140

66

153

4

58

43

87

17

57

19

31

14

28

8

41

—

 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
Table of Contents

Combined Notes to Consolidated Financial Statements - (Continued)
(Dollars in millions, except per share data unless otherwise noted)

27. Subsequent Events (Exelon and Generation)

Generation’s Antelope Valley, a 242 MW solar facility in Lancaster, CA, sells all of its output to Pacific Gas and Electric Company (PG&E) through a PPA. As of
December  31,  2018,  Generation  had  approximately  $750  million  and $510  million  of  net  long-lived  assets  and  nonrecourse  debt  outstanding,  respectively,
related to Antelope Valley. The nonrecourse debt is guaranteed by the DOE Loan Programs Office. Neither the guarantor nor the lender have recourse against
Exelon or Generation in the event of default.

On January 29, 2019, PG&E filed for protection under Chapter 11 of the U.S. Bankruptcy Code. PG&E’s bankruptcy creates an event of default for Antelope
Valley’s nonrecourse debt. As such, Antelope Valley is currently in discussions with the DOE Loan Programs Office, and the debt has not yet been accelerated.
Given that the event of default did not occur until January 2019, the debt continued to be classified as non-current on Exelon’s and Generation’s Consolidated
Balance Sheets as of December 31, 2018, and may be reclassified to current in 2019.

Generation  has  also  assessed  and  determined  that  Antelope  Valley’s  long-lived  assets  are  not  impaired  as  of  December  31,  2018.  Changes  in  assumptions
such  as  the  likelihood  of  the  PPA  being  rejected  as  part  of  the  bankruptcy  proceedings  could  potentially  result  in  future  impairments  of  Antelope  Valley.  The
impairment loss could be substantially all of the net long-lived assets if Antelope Valley was valued without the PPA. Generation is monitoring the bankruptcy
proceedings for any changes in circumstances that would indicate the carrying amount of the net long-lived assets of Antelope Valley may not be recoverable.

Antelope Valley is a wholly owned indirect subsidiary of EGR IV, which had approximately $1,990 million and $830 million of additional net long-lived assets and
nonrecourse  debt  outstanding,  respectively,  as  of  December  31,  2018.  EGR  IV  is  a  wholly  owned  indirect  subsidiary  of  Exelon  and  Generation  and  includes
Generation's interest in EGRP and other projects with non-controlling interests. EGR IV is currently not in default, however, an acceleration of Antelope Valley’s
debt could impact EGR IV. The lenders do not have recourse against Exelon or Generation in the event of default by EGR IV. See Note 2 - Variable Interest
Entities for additional details on EGRP and Note 13 — Debt and Credit Agreements for additional details on Generation's nonrecourse project financings .

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ITEM 9.

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

All Registrants

None.

ITEM 9A.

CONTROLS AND PROCEDURES

All Registrants—Disclosure Controls and Procedures

During  the  fourth  quarter  of  2018  ,  each  registrant’s  management,  including  its  principal  executive  officer  and  principal  financial  officer,  evaluated  the
effectiveness  of  that  registrant’s  disclosure  controls  and  procedures  related  to  the  recording,  processing,  summarizing  and  reporting  of  information  in  that
registrant’s  periodic  reports  that  it  files  with  the  SEC.  These  disclosure  controls  and  procedures  have  been  designed  by  each  registrant  to  ensure  that
(a) information relating to that registrant, including its consolidated subsidiaries, that is required to be included in filings under the Securities Exchange Act of
1934,  is  accumulated  and  made  known  to  that  registrant’s  management,  including  its  principal  executive  officer  and  principal  financial  officer,  by  other
employees  of  that  registrant  and  its  subsidiaries  as  appropriate  to  allow  timely  decisions  regarding  required  disclosure,  and  (b)  this  information  is  recorded,
processed, summarized, evaluated and reported, as applicable, within the time periods specified in the SEC’s rules and forms. Due to the inherent limitations of
control systems, not all misstatements may be detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that
breakdowns can occur because of simple error or mistake. Additionally, controls could be circumvented by the individual acts of some persons or by collusion of
two or more people.

Accordingly, as of December 31, 2018 , the principal executive officer and principal financial officer of each registrant concluded that such registrant’s disclosure
controls and procedures were effective to accomplish their objectives.

All Registrants—Changes in Internal Control Over Financial Reporting

Each  registrant  continually  strives  to  improve  its  disclosure  controls  and  procedures  to  enhance  the  quality  of  its  financial  reporting  and  to  maintain  dynamic
systems  that  change  as  conditions  warrant.  However,  there  have  been  no  changes  in  internal  control  over  financial  reporting  that  occurred  during  the  fourth
quarter of 2018 that have materially affected, or are reasonably likely to materially affect, any of the registrant's internal control over financial reporting.

All Registrants—Internal Control Over Financial Reporting

Management is required to assess and report on the effectiveness of its internal control over financial reporting as of December 31, 2018 . As a result of that
assessment,  management  determined  that  there  were  no  material  weaknesses  as  of  December  31,  2018  and,  therefore,  concluded  that  each  registrant’s
internal  control  over  financial  reporting  was  effective.  Management’s  Report  on  Internal  Control  Over  Financial  Reporting  is  included  in  ITEM 8. FINANCIAL
STATEMENTS AND SUPPLEMENTARY DATA .

ITEM 9B.

OTHER INFORMATION

All Registrants

None.

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PART III  

Exelon  Generation  Company,  LLC,  PECO  Energy  Company,  Baltimore  Gas  and  Electric  Company,  Pepco  Holdings  LLC,  Potomac  Electric  Power  Company,
Delmarva  Power  &  Light  Company  and  Atlantic  City  Electric  Company  meet  the  conditions  set  forth  in  General  Instruction  I(1)(a)  and  (b)  of  Form  10-K  for  a
reduced disclosure format. Accordingly, all items in this section relating to Generation, PECO, BGE, PHI, Pepco, DPL and ACE are not presented.

ITEM 10.

DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Executive Officers

The  information  required  by  ITEM  10.  relating  to  executive  officers  is  set  forth  above  in  ITEM  1.  BUSINESS  —  Executive  officers  of  the  Registrants  at
February 8, 2019 .

Directors, Director Nomination Process and Audit Committee

The  information  required  under  ITEM  10  concerning  directors  and  nominees  for  election  as  directors  at  the  annual  meeting  of  shareholders  (Item  401  of
Regulation S-K), the director nomination process (Item 407(c)(3)), the audit committee (Item 407(d)(4) and (d)(5)) and the beneficial reporting compliance (Sec.
16(a)) is incorporated herein by reference to information to be contained in Exelon’s definitive 2019 proxy statement ( 2019 Exelon Proxy Statement) and the
ComEd information statement ( 2019 ComEd Information Statement) to be filed with the SEC on or before April 30, 2019 pursuant to Regulation 14A or 14C, as
applicable, under the Securities Exchange Act of 1934.

Code of Ethics

Exelon’s  Code  of  Business  Conduct  is  the  code  of  ethics  that  applies  to  Exelon’s  and  ComEd’s  Chief  Executive  Officer,  Chief  Financial  Officer,  Corporate
Controller, and other finance organization employees. The Code of Business Conduct is filed as Exhibit 14 to this report and is available on Exelon’s website at
www.exeloncorp.com.  The  Code  of  Business  Conduct  will  be  made  available,  without  charge,  in  print  to  any  shareholder  who  requests  such  document  from
Carter C. Culver, Senior Vice President and Deputy General Counsel, Exelon Corporation, P.O. Box 805398, Chicago, Illinois 60680-5398.

If any substantive  amendments to the Code of Business Conduct are made or any waivers are granted,  including any implicit waiver, from a provision of the
Code of Business Conduct, to its Chief Executive Officer, Chief Financial Officer or Corporate Controller, Exelon will disclose the nature of such amendment or
waiver on Exelon’s website, www.exeloncorp.com, or in a report on Form 8-K.

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ITEM 11.

EXECUTIVE COMPENSATION

The  information  required  by  this  item  will  be  set  forth  under  Executive  Compensation  Data  and  Report  of  the  Compensation  Committee  in  the  Exelon  Proxy
Statement for the 2019 Annual Meeting of Shareholders or the ComEd 2019 Information Statement, which are incorporated herein by reference.

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ITEM 12.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER
MATTERS

The  additional  information  required  by  this  item  will  be  set  forth  under  Ownership  of  Exelon  Stock  in the 2019 Exelon  Proxy  Statement  or  the  ComEd  2019
Information Statement and incorporated herein by reference.

Securities Authorized for Issuance under Exelon Equity Compensation Plans

[A]

[B]

[C]

Number of securities to
be issued upon
exercise of outstanding
Options, warrants and
rights (Note 1)

Weighted-average
price of outstanding
Options, warrants
and rights (Note 2)

Number of securities
remaining available
for future issuance
under equity
compensation plans
(excluding securities
reflected in
column [B]) (Note 3)

Plan Category
Equity compensation plans approved by security
holders
__________
(1) Balance includes stock options, unvested performance shares, and unvested restricted shares granted under the Exelon LTIP or predecessor company plans including
shares  awarded  under  those  plans  and  deferred  into  the  stock  deferral  plan,  and  deferred  stock  units  granted  to  directors  as  part  of  their  compensation.  Unvested
performance  shares  are  subject  to  performance  metrics  ranging  from  0%  to  150%  of  target  award  values  and  to  a  total  shareholder  return  modifier.  For  performance
shares granted in 2016, 2017 and 2018 , the total includes the number of shares that could be issued pursuant to the terms of the Exelon LTIP plan, which provides that
final payouts are made 50% in shares of stock and 50% in cash, and if the performance and total shareholder return modifier metrics were both at maximum, representing
a best case performance scenario, for a total of 4,942,100 shares. If the performance and total shareholder return modifier metrics were at target, the number of securities
to be issued for such awards would be 2,471,000 . The deferred stock units granted to directors includes 433,400 shares to be issued upon the conversion of deferred
stock units awarded to members of the Exelon Board of Directors. Conversion of the deferred stock units to shares occurs after a director terminates service to the Exelon
board or the board of any of its subsidiary companies. See Note 19 — Stock-Based Compensation Plans of the Combined Notes to Consolidated Financial Statements for
additional information about the material features of the plans.

10,401,300   $

30,071,500

23.77  

(2) The weighted-average price reported in column B does not take the performance shares and shares credited to deferred compensation plans into account.
(3)

Includes 18,410,700 shares remaining available for issuance from the employee stock purchase plan.

No ComEd securities are authorized for issuance under equity compensation plans.

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ITEM 13.

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

The additional information required by this item will be set forth under Related Persons Transactions and Director Independence in the Exelon Proxy Statement
for the 2019 Annual Meeting of Shareholders or the ComEd 2019 Information Statement, which are incorporated herein by reference.

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ITEM 14.

PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this item will be set forth under The Ratification of PricewaterhouseCoopers LLP as Exelon’s Independent Accountant for 2019 in
the  Exelon  Proxy  Statement  for  the  2019  Annual  Meeting  of  Shareholders  and  the  ComEd  2019  Information  Statement,  which  are  incorporated  herein  by
reference.

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PART IV

ITEM 15.

EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)

The following documents are filed as a part of this report:

(1) Exelon

(i)

   Financial Statements (Item 8):

   Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

   Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016

   Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

   Consolidated Balance Sheets at December 31, 2018 and 2017

   Consolidated Statements of Changes in Equity for the Years Ended December 31, 2018, 2017 and 2016

   Notes to Consolidated Financial Statements

(ii)

   Financial Statement Schedules:

Schedule I—Condensed Financial Information of Parent (Exelon Corporate) at December 31, 2018 and 2017 and for the Years Ended
December 31, 2018, 2017 and 2016

   Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto.

485

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
  
Table of Contents

Exelon Corporation and Subsidiary Companies
  Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
Condensed Statements of Operations and Other Comprehensive Income

(In millions)
Operating expenses

Operating and maintenance

Operating and maintenance from affiliates

Other

Total operating expenses

Operating loss

Other income and (deductions)

Interest expense, net

Equity in earnings of investments

Interest income from affiliates, net

Other, net

Total other income

Income before income taxes

Income taxes

Net income

Other comprehensive income (loss)

Pension and non-pension postretirement benefit plans:

Prior service benefit reclassified to periodic costs

Actuarial loss reclassified to periodic cost

Pension and non-pension postretirement benefit plan valuation adjustment

Unrealized gain on cash flow hedges

Unrealized gain on marketable securities

Unrealized gain (loss) on equity investments

Unrealized (loss) gain on foreign currency translation

Other comprehensive income (loss)

Comprehensive income

For the Years Ended
December 31,

2018

2017

2016

$

(5)   $

10   $

9  

4  

8  

(8)  

(312)  

2,188  

42  

3  

1,921  

1,913  

(97)  

25  

4  

39  

(39)  

(315)  

4,414  

40  

1  

4,140  

4,101  

315  

$

$

2,010   $

3,786   $

(66)   $

247  

(143)  

12  

—  

1  

(10)  

41

(56)   $

197  

10  

3  

6  

6  

7  

173

221

51

4

276

(276)

(312)

1,508

39

7

1,242

966

(155)

1,121

(48)

184

(181)

2

1

(4)

10

(36)

$

2,051   $

3,959   $

1,085

See the Notes to Financial Statements

486

 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

Exelon Corporation and Subsidiary Companies
Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
Condensed Statements of Cash Flows

(In millions)
Net cash flows provided by operating activities

Cash flows from investing activities

Changes in Exelon intercompany money pool

Investment in affiliates

Acquisition of business

Other investing activities

Net cash flows used in investing activities

Cash flows from financing activities

Issuance of long-term debt

Proceeds from short-term borrowings with maturities greater than 90 days

Retirement of long-term debt

Common stock issued from treasury stock

Dividends paid on common stock

Proceeds from employee stock plans

Other financing activities

Net cash flows (used in) provided by financing activities

Increase (Decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period

Cash, cash equivalents and restricted cash at end of period

$

See the Notes to Financial Statements

487

For the Years Ended
December 31,

2018

2017

2016

$

2,581   $

1,921   $

1,029

1  

(1,236)  

—  

—  

(129)  

(1,717)  

—  

(5)  

(1,235)

(1,851)

—  

—  

—  

—  

(1,332)  

105  

(4)  

(1,231)  

115  

74  

189   $

—  

500  

(569)  

1,150  

(1,236)  

150  

(9)  

(14)  

56  

18  

74   $

1,390

(1,757)

(6,962)

5

(7,324)

1,800

—

(46)

—

(1,166)

55

(20)

623

(5,672)

5,690

18

 
 
 
 
 
   
   
 
   
   
Table of Contents

Exelon Corporation and Subsidiary Companies
Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
Condensed Balance Sheets

(In millions)

Current assets

Cash and cash equivalents

Accounts receivable, net

Other accounts receivable

Accounts receivable from affiliates

Notes receivable from affiliates

Regulatory assets

Other

Total current assets

Property, plant and equipment, net

Deferred debits and other assets

Regulatory assets

Investments in affiliates

Deferred income taxes

Notes receivable from affiliates

Other

Total deferred debits and other assets

Total assets

ASSETS

December 31,

2018

2017

$

189   $

48  

44  

216  

182  

4  

683  

48  

3,742  

40,448  

1,455  

898  

235  

46,778  

47,509   $

$

See the Notes to Financial Statements

488

74

431

33

217

284

4

1,043

50

3,697

39,311

1,431

910

234

45,583

46,676

 
 
 
 
   
 
   
 
   
 
   
Table of Contents

(In millions)

Current liabilities

Exelon Corporation and Subsidiary Companies
Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
Condensed Balance Sheets

LIABILITIES AND SHAREHOLDERS’ EQUITY

Short-term borrowings

Accounts payable

Accrued expenses

Payables to affiliates

Regulatory liabilities

Pension obligations

Other

Total current liabilities

Long-term debt

Deferred credits and other liabilities

Regulatory liabilities

Pension obligations

Non-pension postretirement benefit obligations

Deferred income taxes

Other

Total deferred credits and other liabilities

Total liabilities

Commitments and contingencies

Shareholders’ equity

Common stock (No par value, 2,000 shares authorized, 968 shares and 963 shares outstanding
at December 31, 2018 and 2017, respectively)

Treasury stock, at cost (2 shares at December 31, 2018 and 2017)

Retained earnings

Accumulated other comprehensive loss, net

Total shareholders’ equity

Total liabilities and shareholders’ equity

December 31,

2018

2017

$

500   $

1  

184  

360  

15  

63  

14  

1,137  

7,147  

32  

7,795  

199  

233  

202  

8,461  

16,745  

19,116  

(123)  

14,766  

(2,995)  

30,764  

500

2

99

360

16

65

46

1,088

7,161

15

7,792

322

220

180

8,529

16,778

18,966

(123)

14,081

(3,026)

29,898

46,676

$

47,509   $

See the Notes to Financial Statements

489

 
 
 
 
   
 
   
 
   
 
 
   
Table of Contents

1. Basis of Presentation

Exelon Corporation and Subsidiary Companies  
Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
  Notes to Financial Statements

Exelon Corporate is a holding company that conducts substantially all of its business operations through its subsidiaries. These condensed financial statements
and related footnotes have been prepared in accordance with Rule 12-04, Schedule I of Regulation S-X. These statements should be read in conjunction with
the consolidated financial statements and notes thereto of Exelon Corporation.

Exelon  Corporate  owns  100% of  all  of  its  significant  subsidiaries,  either  directly  or  indirectly,  except  for  Commonwealth  Edison  Company  (ComEd),  of  which
Exelon Corporate owns more than 99% , and BGE, of which Exelon owns 100% of the common stock but none of BGE’s preferred stock. BGE redeemed all of
its outstanding preferred stock in 2016.

2. Mergers

On March 23, 2016, Exelon completed the merger contemplated by the Merger Agreement among Exelon, Purple Acquisition Corp., a wholly owned subsidiary
of Exelon (Merger Sub) and Pepco Holdings, Inc. (PHI). As a result of that merger, Merger Sub was merged into PHI (the PHI Merger) with PHI surviving as a
wholly owned subsidiary of Exelon and Exelon Energy Delivery Company, LLC (EEDC), a wholly owned subsidiary of Exelon which also owns Exelon's interests
in ComEd, PECO and BGE (through a special purpose subsidiary in the case of BGE). See Note 5 — Mergers, Acquisitions and Dispositions of the Combined
Notes to Consolidated Financial Statements for additional information on the PHI Merger.

3. Debt and Credit Agreements

Short-Term Borrowings

Exelon Corporate meets its short-term liquidity requirements primarily through the issuance of commercial paper. Exelon Corporate had no commercial paper
borrowings at both December 31, 2018 and December 31, 2017 .

Short-Term Loan Agreements

On March 23, 2017, Exelon Corporate entered into a $500 million term loan agreement which expired on March 22, 2018.  The loan agreement was renewed on
March 22, 2018 and will expire on March 21, 2019. Pursuant to the loan agreement, loans made thereunder bear interest at a variable rate equal to LIBOR plus
1% and all indebtedness thereunder is unsecured. The loan agreement is reflected in Exelon’s Consolidated Balance Sheet within Short-Term borrowings.

Credit Agreements

On May 26, 2016, Exelon Corporate amended its syndicated revolving credit facility with aggregate bank commitments of $600 million through May 26, 2021. On
May 26, 2018, Exelon Corporate had its maturity date extended to May 26, 2023. As of December 31, 2018 , Exelon Corporation had available capacity under
those commitments of $591 million . See Note 13 — Debt and Credit Agreements of the Combined Notes to Consolidated Financial Statements for additional
information regarding Exelon Corporation’s credit agreement.

490

 
Table of Contents

Long-Term Debt

Exelon Corporation and Subsidiary Companies  
Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
  Notes to Financial Statements

The following tables present the outstanding long-term debt for Exelon Corporate as of December 31, 2018 and December 31, 2017 :

Long-term debt

Junior subordinated notes

Senior unsecured notes (a)

Total long-term debt

Unamortized debt discount and premium, net

Unamortized debt issuance costs

Fair value adjustment of consolidated subsidiary

Long-term debt

Rates

Maturity
Date

December 31,

2018

2017

2.45%  

3.50%  

7.60%  

2022   $

1,150   $

2020 - 2046  

5,889  

7,039  

(7)  

(47)  

162  

1,150

5,889

7,039

(8)

(49)

179

  $

7,147

$

7,161

__________
(a) Senior unsecured notes include mirror debt that is held on both Generation and Exelon Corporation's balance sheets.

The debt maturities for Exelon Corporate for the periods 2019 , 2020 , 2021 , 2022 , 2023 and thereafter are as follows:

2019

2020

2021

2022

2023

Remaining years

Total long-term debt

4. Commitments and Contingencies

$

$

—

1,450

300

1,150

—

4,139

7,039

See  Note  22  —  Commitments  and  Contingencies  of  the  Combined  Notes  to  Consolidated  Financial  Statements  for  Exelon  Corporate’s  commitments  and
contingencies related to environmental matters and fund transfer restrictions.

491

 
 
   
 
 
 
 
 
 
   
   
   
   
 
 
 
   
   
 
 
   
   
 
 
   
   
 
 
   
   
 
 
   
   
Table of Contents

5. Related Party Transactions

Exelon Corporation and Subsidiary Companies  
Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
  Notes to Financial Statements

The financial statements of Exelon Corporate include related party transactions as presented in the tables below:

(In millions)
Operating and maintenance from affiliates:

BSC (a)
Other

Total operating and maintenance from affiliates:

Interest income from affiliates, net:

Generation

BSC

Exelon Energy Delivery Company, LLC (b)

Total interest income from affiliates, net:

Equity in earnings (losses) of investments:

Exelon Energy Delivery Company, LLC (b)

PCI

BSC

UII, LLC

Exelon Transmission Company, LLC

Exelon Enterprise

Generation

Total equity in earnings of investments:

Cash contributions received from affiliates

For the Years Ended
December 31,

2018

2017

2016

11   $

(2)  

9   $

36   $

4  

2   $

42   $

23   $

2  

25   $

37   $

3  

—   $

40   $

51

—

51

39

—

—

39

1,835   $

1,670   $

1,041

(17)  

—  

—  

1  

—  

369  

2,188   $

1  

1  

41  

(10)  

1  

2,710  

4,414   $

6

1

(9)

(13)

(1)

483

1,508

2,302   $

1,879   $

1,912

$

$

$

$

$

$

$

$

492

 
 
 
 
   
   
 
   
   
 
   
   
 
 
   
   
Table of Contents

Exelon Corporation and Subsidiary Companies  
Schedule I – Condensed Financial Information of Parent (Exelon Corporate)
  Notes to Financial Statements

(in millions)
Accounts receivable from affiliates (current):

BSC (a)
Generation

ComEd

PECO

BGE

PHISCO

Total accounts receivable from affiliates (current):

Notes receivable from affiliates (current):

BSC (a)

Generation (c)

Total notes receivable from affiliates (current):

Investments in affiliates:

BSC (a)

Exelon Energy Delivery Company, LLC (b)

PCI

UII, LLC

Exelon Transmission Company, LLC

Voluntary Employee Beneficiary Association trust

Exelon Enterprises

Generation

Other

Total investments in affiliates:

Notes receivable from affiliates (non-current):

Generation (c)

Accounts payable to affiliates (current):

December 31,

2018

2017

13   $

17  

4  

2  

2  

6  

44   $

116   $

100  

216   $

197   $

26,702  

61  

268  

1  

(1)  

22  

13,204  

(6)  

40,448   $

1

21

3

1

1

6

33

217

—

217

196

25,082

78

268

1

(4)

22

13,674

(6)

39,311

898   $

910

$

$

$

$

$

$

$

UII, LLC
__________
(a) Exelon  Corporate  receives  a  variety  of  corporate  support  services  from  BSC,  including  legal,  human  resources,  financial,  information  technology  and  supply  management  services.  All

360   $

360

$

services are provided at cost, including applicable overhead.

(b) Exelon Energy Delivery Company, LLC consists of ComEd, PECO, BGE, PHI, Pepco, DPL and ACE.
(c)

In  connection  with  the  debt  obligations  assumed  by  Exelon  as  part  of  the  Constellation  merger,  Exelon  and  subsidiaries  of  Generation  (former  Constellation  subsidiaries)  assumed
intercompany  loan  agreements  that  mirror  the  terms  and  amounts  of  the  third-party  debt  obligations  of  Exelon,  resulting  in  intercompany  notes  payable  included  in  Long-Term  Debt  to
affiliates in Generation’s Consolidated Balance Sheets and intercompany notes receivable at Exelon Corporate, which are eliminated in consolidation in Exelon’s Consolidated Balance
Sheets.

493

 
 
 
   
 
   
 
   
 
   
 
   
Table of Contents

Exelon Corporation and Subsidiary Companies  

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Additions and adjustments

Description

Balance at
Beginning
of Period

Charged to
Costs and
Expenses

For the year ended December 31, 2018

Allowance for uncollectible accounts (a)

Deferred tax valuation allowance

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts (a)

Deferred tax valuation allowance

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts (a)

Deferred tax valuation allowance

  $

322

$

159

$

37

174

—

25

  $

334

$

126

$

20

113

—

56

  $

284

$

13

162

$

—

Charged
to Other
Accounts

(in millions)

35

5

(31)

(d)  

Deductions

Balance at
End
of Period

(c)  

$

197 (e)   $

7  

12  

27

17

10

99

10

(c)  

$

165 (e)   $

—  

5  

(b)(c)   $

(b)  

211 (e)   $

3  

319

35

156

322

37

174

334

20

Reserve for obsolete materials
__________
(a) Excludes the non-current allowance for uncollectible accounts related to PECO’s installment plan receivables of  $13 million , $15 million , and $23 million for the years

113

105

(b)  

12

1

5  

ended December 31, 2018 , 2017 and 2016 , respectively.

Includes charges for late payments and non-service receivables.

(b) Primarily represents the addition of PHI's results as of March 23, 2016 , the date of the merger
(c)
(d) Primarily reflects the reclassification of assets as held for sale.
(e) Write-off of individual accounts receivable.

494

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(2) Generation

(i)

Financial Statements (Item 8):

Exelon Generation Company, LLC and Subsidiary Companies

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Balance Sheets at December 31, 2018 and 2017

Consolidated Statements of Changes in Equity for the Years Ended December 31, 2018, 2017 and 2016

Notes to Consolidated Financial Statements

(ii)

Financial Statement Schedule:

Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

495

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exelon Generation Company, LLC and Subsidiary Companies

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at
Beginning
of Period

Charged to
Costs and
Expenses

Charged
to Other
Accounts

(in millions)

Deductions

Balance at
End
of Period

Additions and adjustments

For the year ended December 31, 2018

Allowance for uncollectible accounts

  $

114

$

Deferred tax valuation allowance

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials
__________
(a) Primarily reflects the reclassification of assets as held for sale.

  $

  $

23

166

91

9

106

$

77

$

11  

102

496

$

$

44

—

20

34

—

51

19

$

—  

6

$

4

3

(32)

(a)  

—  

$

14

9

3

—  

—

$

58   $

—  

9  

11   $

—  

—  

8   $

2  

2  

104

26

145

114

23

166

91

9

106

 
 
 
 
 
   
 
 
 
   
 
 
 
 
 
 
 
   
   
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(3) ComEd

(i)

Financial Statements (Item 8):

Commonwealth Edison Company and Subsidiary Companies

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Balance Sheets at December 31, 2018 and 2017

Consolidated Statements of Changes in Shareholders’ Equity for the Years Ended December 31, 2018, 2017 and 2016

Notes to Consolidated Financial Statements

(ii)

Financial Statement Schedule:

Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

497

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Commonwealth Edison Company and Subsidiary Companies

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at
Beginning
of Period

Charged to
Costs and
Expenses

Charged
to Other
Accounts

(in millions)

Deductions

Balance at
End
of Period

Additions and adjustments

For the year ended December 31, 2018

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts

  $

  $

  $

Reserve for obsolete materials
__________
(a) Primarily charges for late payments and non-service receivables.
(b) Write-off of individual accounts receivable.

$

$

$

73

5

70

4

75

3

498

$

$

$

44

3

39

3

45

4

23 (a)   $

1

20 (a)   $

1

23 (a)   $

1

59 (b)   $

3  

56 (b)   $

3  

73 (b)   $

4  

81

6

73

5

70

4

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(4) PECO

(i)

Financial Statements (Item 8):

PECO Energy Company and Subsidiary Companies

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Balance Sheets at December 31, 2018 and 2017

Consolidated Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2018, 2017 and 2016

Notes to Consolidated Financial Statements

(ii)

Financial Statement Schedule:

Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

499

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

PECO Energy Company and Subsidiary Companies

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at
Beginning
of Period

Charged to
Costs and
Expenses

Charged
to Other
Accounts

(in millions)

Deductions

Balance at
End
of Period

Additions and adjustments

For the year ended December 31, 2018

Allowance for uncollectible accounts (a)

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts (a)

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts (a)

  $

  $

  $

$

$

56

2

61

2

$

$

33

—

26

—

3 (b)    $

—

4 (b)    $

—

31 (c)    $
—  

35 (c)    $
—  

61

2

56

2

61

Reserve for obsolete materials
__________
(a) Excludes the non-current allowance for uncollectible accounts related to PECO’s installment plan receivables of  $13 million , $15 million , and $23 million for the years

—

1

2

1

83

$

32

$

7 (b)    $

61 (c)    $
—  

ended December 31, 2018 , 2017 , and 2016 , respectively.

(b) Primarily charges for late payments.
(c) Write-off of individual accounts receivable.

500

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(5) BGE

(i)

Financial Statements (Item 8):

Baltimore Gas and Electric Company and Subsidiary Companies

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Balance Sheets at December 31, 2018 and 2017

Consolidated Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2018, 2017 and 2016

Notes to Consolidated Financial Statements

(ii)

Financial Statement Schedule:

Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

501

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Baltimore Gas and Electric Company and Subsidiary Companies

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at
Beginning
of Period

Charged to
Costs and
Expenses

Charged
to Other
Accounts

(in millions)

Deductions

Balance at
End
of Period

Additions and adjustments

For the year ended December 31, 2018

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials
__________
(a) Write-off of individual accounts receivable.

  $

  $

  $

$

$

24

1

—

32

1

—

49

$

1  

—  

502

$

$

10

—

1

8

—

—

1

$

—  

—  

(2)

$

—

—

(3)

$

—

—

9

$

—  

—  

12 (a)   $
—  

—  

13 (a)   $
—  

—  

27 (a)   $
—  

—  

20

1

1

24

1

—

32

1

—

 
 
 
 
 
   
 
   
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(6) PHI

Pepco Holdings LLC and Subsidiary Companies

(i)

Successor Company Financial Statements (Item 8):

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Consolidated Statements of Operations and Comprehensive Income (Loss) for the Years Ended December 31, 2018 and 2017 and for the Period
March 24, 2016 to December 31, 2016

Consolidated Statements of Cash Flows for the Years Ended December 31, 2018 and 2017 and for the Period March 24, 2016 to December 31,
2016

Consolidated Balance Sheets at December 31, 2018 and 2017

Consolidated Statements of Changes in Equity for the Years Ended December 31, 2018 and 2017 and for the Period March 24, 2016 to
December 31, 2016

Notes to Consolidated Financial Statements

(ii)

Predecessor Company Financial Statements (Item 8):

Report of Independent Registered Public Accounting Firm dated February 13, 2017 of PricewaterhouseCoopers LLP

Consolidated Statements of Operations and Comprehensive Income for the Period January 1, 2016 to March 23, 2016

Consolidated Statements of Cash Flows for the Period January 1, 2016 to March 23, 2016

Consolidated Statements of Changes in Equity for the Period January 1, 2016 to March 23, 2016

Notes to Consolidated Financial Statements

(iii)

Successor Financial Statement Schedule:

Schedule II – Valuation and Qualifying Accounts - For the Years Ended December 31, 2018 and 2017 and the Period March 24, 2016 to
December 31, 2016

(iv)

Predecessor Financial Statement Schedule:

Schedule II – Valuation and Qualifying Accounts - For the Period January 1, 2016 to March 23, 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

503

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Pepco Holdings LLC and Subsidiary Companies

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at 
Beginning 
of Period

Charged to 
Costs and 
Expenses

Charged 
to Other 
Accounts

(in millions)

Deductions

Balance at 
End 
of Period

Additions and adjustments

For the Year Ended December 31, 2018 (Successor)

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials

For the Year Ended December 31, 2017 (Successor)

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials

March 24, 2016 to December 31, 2016 (Successor)

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials

January 1, 2016 to March 23, 2016 (Predecessor)

Allowance for uncollectible accounts

Deferred tax valuation allowance

Reserve for obsolete materials
__________
(a) Primarily charges for late payments.
(b) Write-off of individual accounts receivable.

  $

  $

  $

  $

28   $

—  

—  

19   $

—  

2  

65   $

—  

1  

16   $

—  

—  

55   $

13  

2  

80   $

10  

2  

52   $

63  

—  

56   $

63  

—  

504

(a)   $

7

2

—  

(b)   $

37

7

—  

6

3

—  

(a)   $

50

(b)   $

—  

2

5

(a)   $

42

(b)   $

(53)

—  

—  

(1)

2

(a)   $

22

(b)   $

—  

—  

—  

—  

53

8

2

55

13

2

80

10

2

52

63

—

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
Table of Contents

(7) Pepco

(i)

Financial Statements (Item 8):

Potomac Electric Power Company

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Statements of Operations and Comprehensive Income for the Years Ended December 31, 2018, 2017 and 2016

Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

Balance Sheets at December 31, 2018 and 2017

Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2018, 2017 and 2016

Notes to Financial Statements

(ii)

Financial Statement Schedule:

Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

505

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Potomac Electric Power Company

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at 
Beginning 
of Period

Charged to 
Costs and 
Expenses

Charged 
to Other 
Accounts

(in millions)

Deductions

Balance at 
End 
of Period

Additions and adjustments

For the year ended December 31, 2018

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts

Reserve for obsolete materials
__________
(a) Primarily charges for late payments.
(b) Write-off of individual accounts receivable.

  $

  $

  $

21   $

1  

29   $

1  

17   $

—  

506

11   $

—  

8   $

1  

29   $

3  

3 (a)   $
—  

2 (a)   $
—  

3 (a)   $
—  

14 (b)   $
—  

18 (b)   $

1  

20 (b)   $

2  

21

1

21

1

29

1

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
   
   
   
 
 
 
 
 
   
   
   
 
 
 
 
 
Table of Contents

(8) DPL

(i)

Financial Statements (Item 8):

Delmarva Power & Light Company

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Statements of Operations and Comprehensive Income (Loss) for the Years Ended December 31, 2018, 2017 and 2016

Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

Balance Sheets at December 31, 2018 and 2017

Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2018, 2017 and 2016

Notes to Financial Statements

(ii)

Financial Statement Schedule:

Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

507

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Delmarva Power & Light Company

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at 
Beginning 
of Period

Charged to 
Costs and 
Expenses

Charged 
to Other 
Accounts

(in millions)

Deductions

Balance at 
End 
of Period

Additions and adjustments

For the year ended December 31, 2018

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts

Reserve for obsolete materials
__________
(a) Primarily charges for late payments.
(b) Write-off of individual accounts receivable.

  $

  $

  $

16   $

—  

24   $

—  

17   $

—  

508

6   $

—  

3   $

1  

23   $

1  

2 (a)   $
—  

2 (a)   $
—  

2 (a)   $
—  

11 (b)   $
—  

13 (b)   $

1  

18 (b)   $

1  

13

—

16

—

24

—

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
   
   
   
 
 
 
 
 
   
   
   
 
 
 
 
 
Table of Contents

(9) ACE

(i)

Financial Statements (Item 8):

Atlantic City Electric Company and Subsidiary Company

Report of Independent Registered Public Accounting Firm dated February 8, 2019 of PricewaterhouseCoopers LLP

Consolidated Statements of Operations and Comprehensive Income (Loss) for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016

Consolidated Balance Sheets at December 31, 2018 and 2017

Consolidated Statements of Changes in Shareholder's Equity for the Years Ended December 31, 2018, 2017 and 2016

Notes to Consolidated Financial Statements

(ii)

Financial Statement Schedule:

Schedule II—Valuation and Qualifying Accounts for the Years Ended December 31, 2018, 2017 and 2016

Schedules not included are omitted because of the absence of conditions under which they are required or because the required information is
provided in the consolidated financial statements, including the notes thereto

509

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Atlantic City Electric Company and Subsidiary Company

Schedule II – Valuation and Qualifying Accounts

Column A

Column B

Column C

Column D

Column E

Description

Balance at 
Beginning 
of Period

Charged to 
Costs and 
Expenses

Charged 
to Other 
Accounts

(in millions)

Deductions

Balance at 
End 
of Period

Additions and adjustments

For the year ended December 31, 2018

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2017

Allowance for uncollectible accounts

Reserve for obsolete materials

For the year ended December 31, 2016

Allowance for uncollectible accounts

Reserve for obsolete materials
__________
(a) Primarily charges for late payments.
(b) Write-off of individual accounts receivable.

  $

  $

  $

18   $

1  

27   $

1  

17   $

—  

510

11   $

—  

8   $

—  

32   $

1  

2 (a)   $
—  

2 (a)   $
—  

2 (a)   $
—  

12 (b)   $
—  

19 (b)   $
—  

24 (b)   $
—  

19

1

18

1

27

1

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
   
   
   
 
 
 
 
 
   
   
   
 
 
 
 
 
Table of Contents

Exhibits required by Item 601 of Regulation S-K:

Certain of the following exhibits are incorporated herein by reference under Rule 12b-32 of the Securities and Exchange Act of 1934, as amended. Certain other
instruments which would otherwise be required to be listed below have not been so listed because such instruments do not authorize securities in an amount
which exceeds 10% of the total assets of the applicable registrant and its subsidiaries on a consolidated basis and the relevant registrant agrees to furnish a
copy of any such instrument to the Commission upon request.

Exhibit No.

Description

2-1

2-2

2-3

2-4

2-5

2-6

2-7

2-8

2-9

2-10-1

2-10-2

Agreement and Plan of Merger dated as of April 28, 2011 by and among Exelon Corporation, Bolt Acquisition Corporation and Constellation
Energy Group, Inc. (File No. 001-16169, Form 8-K dated April 28, 2011, Exhibit No. 2-1).

Distribution and Assignment Agreement, dated as of March 12, 2012, by and among Exelon Corporation, Constellation Energy Group, Inc.
and RF HoldCo LLC (File No. 001-16169, Form 8-K dated March 14, 2012, Exhibit No. 2-3).

Contribution and Assignment Agreement, dated as of March 12, 2012, by and among Exelon Corporation, Exelon Energy Delivery Company,
LLC and RF HoldCo LLC (File No. 001-16169, Form 8-K dated March 14, 2012, Exhibit No. 2-4).

Contribution Agreement, dated as of March 12, 2012, by and among Exelon Corporation, Exelon Ventures Company, LLC and Exelon
Generation Company, LLC (File No. 001-16169, Form 8-K dated March 14, 2012, Exhibit No. 2-5).

Purchase Agreement dated as of August 8, 2012 by and between Constellation Power Source Generation, Inc. and Raven Power Holdings,
LLC. (File No. 333-85496, Form 10-Q for the quarter ended September 30, 2012, Exhibit 2-1).

Master Agreement, dated as of October 26, 2010, by and between Electricite de France, S.A. and Constellation Energy Group, Inc.
(Designated as Exhibit No. 2.1 to the Current Report on Form 8-K dated November 1, 2010, filed by Constellation Energy Group, Inc., File No.
1-12869).

Put Termination Agreement dated as of November 3, 2010, by and among EDF Inc. (formerly known as EDF Development, Inc.), E.D.F.
International S.A., Constellation Nuclear, LLC, and Constellation Energy Nuclear Group, LLC. (Designated as Exhibit No. 2.1 to the Current
Report on Form 8-K dated November 8, 2010, filed by Constellation Energy Group, Inc., File No. 1-12869).

Contribution Agreement, dated as of February 4, 2010, by and among Constellation Energy Group, Inc., Baltimore Gas and Electric Company
and RF HoldCo LLC. (Designated as Exhibit No. 99.2 to the Current Report on Form 8-K dated February 4, 2010, filed by Constellation
Energy Group, Inc., File Nos. 1-12869 and 1-1910).

Purchase Agreement, dated as of February 4, 2010, by and between RF HoldCo LLC and GSS Holdings (Baltimore Gas and Electric
Company Utility), Inc. (Designated as Exhibit No. 99.3 to the Current Report on Form 8-K dated February 4, 2010, filed by Constellation
Energy Group, Inc., File Nos. 1-12869 and 1-1910).

Agreement and Plan of Merger, dated as of April 29, 2014, by and among Exelon Corporation, Pepco Holdings, Inc. and Purple Acquisition
Corp. (File No. 001-16169, Form 8-K dated April 30, 2014, Exhibit 2.1).

Amended and Restated Agreement and Plan of Merger, dated as of July 18, 2014, among Pepco Holdings, Inc., Exelon Corporation and
Purple Acquisition Corp. (File No. 001-16169, Form 8-K dated July 21, 2014, Exhibit 2.1).

511

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

Description

2-10-3

2-10-4

3-1

3-2

3-3

3-4

3-5

3-6

3-7

3-8

3-9

3-10

3-11

3-12

3-13

3-14

Subscription Agreement for Series A Non-Voting Non-Convertible Preferred Stock, dated as of April 29, 2014, by and between Pepco
Holdings, Inc. and Exelon Corporation (File No. 001-16169, Form 8-K dated April 30, 2014, Exhibit 2.2).

Letter Agreement, dated March 7, 2016, among Pepco Holdings, Inc., Exelon Corporation and Purple Acquisition Corp. (File No. 001-31403,
Form 8-K dated March 7, 2016, Exhibit 2)

Amended and Restated Articles of Incorporation of Exelon Corporation, as amended July 24, 2018 (File No. 001-16169, Form 8-K dated July
27, 2018, Exhibit 3.1).

Exelon Corporation Amended and Restated Bylaws, as amended on July 24, 2018 (File No. 001-16169, Form 8-K dated July 27, 2018, Exhibit
3.2).

Certificate of Formation of Exelon Generation Company, LLC (Registration Statement No. 333-85496, Form S-4, Exhibit 3-1).

First Amended and Restated Operating Agreement of Exelon Generation Company, LLC executed as of January 1, 2001 (File No. 333-85496,
2003 Form 10-K, Exhibit 3-8).

Restated Articles of Incorporation of Commonwealth Edison Company Effective February 20, 1985, including Statements of Resolution
Establishing Series, relating to the establishment of three new series of Commonwealth Edison Company preference stock known as the
“$9.00 Cumulative Preference Stock,” the “$6.875 Cumulative Preference Stock” and the “$2.425 Cumulative Preference Stock” (File No. 1-
1839, 1994 Form 10-K, Exhibit 3-2).

Commonwealth Edison Company Amended and Restated By-Laws, Effective January 23, 2006 As Further Amended January 28, 2008 and
July 27, 2009. (File No. 001-1839, Form 8-K dated July 27, 2009, Exhibit 3.1).

Amended and Restated Articles of Incorporation of PECO Energy Company (File No. 1-01401, 2000 Form 10-K, Exhibit 3-3).

PECO Energy Company Amended Bylaws (File 000-16844, Form 8-K dated May 6, 2009, Exhibit 99.1).

Articles of Amendment to the Charter of Baltimore Gas and Electric Company as of February 2, 2010. (Designated as Exhibit No. 3.1 to the
Current Report on Form 8-K dated February 4, 2010, filed by Baltimore Gas and Electric Company, File No. 1-1910).

Articles of Restatement to the Charter of Baltimore Gas and Electric Company, restated as of August 16, 1996. (Designated as Exhibit No. 3
to the Quarterly Report on Form 10-Q for the quarter ended September 30, 1996, filed by Baltimore Gas and Electric Company, File No. 1-
1910).

Bylaws of Baltimore Gas and Electric Company, as amended and restated as of May 10, 2012. (File No. 1-16169, 2013 Form 10-K, Exhibit 3-
11).

Operating Agreement, dated as of February 4, 2010, by and among RF HoldCo LLC, Constellation Energy Group, Inc. and GSS Holdings
(BGE Utility), Inc. (Designated as Exhibit No. 99.1 to the Current Report on Form 8-K dated February 4, 2010, filed by Baltimore Gas and
Electric Company, File Nos. 1-12869 and 1-1910).

Certificate of Conversion of Pepco Holdings LLC, dated March 23, 2016 (File No. 001-31403, Form 8-K dated March 24, 2016, Exhibit 3.1)

Certificate of Formation of Pepco Holdings LLC, dated March 23, 2016 (File No. 001-31403, Form 8-K dated March 24, 2016, Exhibit 3.2)

512

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

3-15

3-16

3-17

3-18

3-19

3-20

3-21

3-22

4-1

4-1-2

4-1-3

Description
Limited Liability Company Agreement of Pepco Holdings LLC, dated March 23, 2016 (File No. 001-31403, Form 8-K dated March 24, 2016,
Exhibit 3.3)

Potomac Electric Power Company Restated Articles of Incorporation and Articles of Restatement of (as filed in the District of Columbia) (File
No. 001-31403, Form 10-Q dated May 5, 2006, Exhibit 3.1)

Potomac Electric Power Company Restated Articles of Incorporation and Articles of Restatement of (as filed in Virginia) (File No. 001-01072,
Form 10-Q dated November 4, 2011, Exhibit 3.3)

Delmarva Power & Light Company Articles of Restatement of Certificate and Articles of Incorporation (filed in Delaware and Virginia 02/22/07)
(File No. 001-01405, Form 10-K dated March 1, 2007, Exhibit 3.3)

Atlantic City Electric Company Restated Certificate of Incorporation (filed in New Jersey on August 9, 2002) (File No. 001-03559, Amendment
No. 1 to Form U5B dated February 13, 2003, Exhibit B.8.1)

Bylaws of Potomac Electric Power Company (File No. 001-01072, Form 10-Q dated May 5, 2006, Exhibit 3.2)

Bylaws of Delmarva Power & Light Company (File No. 001-01405, Form 10-Q dated May 9, 2005, Exhibit 3.2.1)

Bylaws of Atlantic City Electric Company (File No. 001-03559, Form 10-Q dated May 9, 2005, Exhibit 3.2.2)

First and Refunding Mortgage dated May 1, 1923 between The Counties Gas and Electric Company (predecessor to PECO Energy
Company) and Fidelity Trust Company, Trustee (U.S. Bank National Association, as current successor trustee), (Registration No. 2-2281,
Exhibit B-1). (a)

Reserved.

Supplemental Indentures to PECO Energy Company’s First and Refunding Mortgage:

Dated as of

May 1, 1927

March 1, 1937

December 1, 1941

November 1, 1944

December 1, 1946

September 1, 1957

May 1, 1958

March 1, 1968

March 1, 1981

March 1, 1981

December 1, 1984

March 1, 1993

   File Reference

   2-2881 (a)

   2-2881 (a)

   2-4863 (a)

   2-5472 (a)

   2-6821 (a)

   2-13562 (a)

   2-14020 (a)

   2-34051 (a)

   2-72802 (a)

   2-72802 (a)

   1-01401, 1984 Form 10-K (a)

   1-01401, 1992 Form 10-K (a)

513

   Exhibit No.

   B-1(c)

   B-1(g)

   B-1(h)

   B-1(i)

   7-1(j)

   2(b)-17

   2(b)-18

   2(b)-24

   4-46

   4-47

   4-2(b)

   4(e)-86

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Dated as of
May 1, 1993

May 1, 1993

April 15, 2004

September 15, 2006

March 1, 2007

March 15, 2009

September 1, 2012

September 15, 2013

September 1, 2014

   File Reference

   1-01401, March 31, 1993 Form 10-Q (a)

   Exhibit No.
   4(e)-88

   1-01401, March 31, 1993 Form 10-Q (a)

   4(e)-89

   0-6844, September 30, 2004 Form 10-Q (a)

   4-1-1

000-16844, Form 8-K dated September 25,
2006

   000-16844, Form 8-K dated March 19, 2007

   000-16844, Form 8-K dated March 26, 2009

000-16844, Form 8-K dated September 17,
2012

000-16844, Form 8-K dated September 23,
2013

000-16844, Form 8-K dated September 15,
2014

4.1

   4.1

   4.1

4.1

4.1

4.1

September 15, 2015

000-16844, Form 8-K dated October 5, 2015

4.1

September 1, 2016

September 1, 2017

000-16844, Form 8-K dated September 21,
2016

000-16844, Form 8-K dated September 18,
2017

4.1

4.1

February 1, 2018

000-16844, Form 8-K dated February 23, 2018

4.1

September 1, 2018

000-16844, Form 8-K dated September 11,
2018

4.1

Exhibit No.

Description

4-2

4-3

Exelon Corporation Direct Stock Purchase Plan (Registration Statement No. 333-206474, Form S-3, Prospectus).

Mortgage of Commonwealth Edison Company to Illinois Merchants Trust Company, Trustee (BNY Mellon Trust Company of Illinois, as current
successor Trustee), dated July 1, 1923, as supplemented and amended by Supplemental Indenture thereto dated August 1, 1944.
(Registration No. 2-60201, Form S-7, Exhibit 2-1). (a)

4-3-1

Supplemental Indentures to Commonwealth Edison Company Mortgage.

Dated as of
August 1, 1946

April 1, 1953

March 31, 1967

   File Reference

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

514

   Exhibit No.

   2-1

   2-1

   2-1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Dated as of
April 1, 1967

February 28, 1969

May 29, 1970

June 1, 1971

April 1, 1972

May 31, 1972

June 15, 1973

May 31, 1974

June 13, 1975

May 28, 1976

June 3, 1977

May 17, 1978

August 31, 1978

June 18, 1979

June 20, 1980

April 16, 1981

April 30, 1982

April 15, 1983

April 13, 1984

April 15, 1985

April 15, 1986

January 13, 2003

February 22, 2006

August 1, 2006

   File Reference

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-60201, Form S-7 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   2-99665, Form S-3 (a)

   33-6879, Form S-3 (a)

   Exhibit No.

   2-1

   2-1

   2-1

   2-1

   2-1

   2-1

   2-1

   2-1

   2-1

   2-1

   2-1

   4-3

   4-3

   4-3

   4-3

   4-3

   4-3

   4-3

   4-3

   4-3

   4-9

   001-01839, Form 8-K dated February 13, 2003    4-4

   001-01839, Form 8-K dated March 6, 2006

   001-01839, Form 8-K dated August 28, 2006

   4.1

   4.1

   4.1

   4.1

4.1

September 15, 2006

   001-01839, Form 8-K dated October 2, 2006

March 1, 2007

August 30, 2007

   001-01839, Form 8-K dated March 23, 2007

001-01839, Form 8-K dated September 10,
2007

December 20, 2007

   001-01839, Form 8-K dated January 16, 2008    4.1

March 10, 2008

   001-01839, Form 8-K dated March 27, 2008

   4.1

515

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
September 17, 2012

   001-01839, Form 8-K dated October 1, 2012

Table of Contents

Dated as of
July 12, 2010

August 22, 2011

August 1, 2013

January 2, 2014

October 28, 2014

February 18, 2015

November 4, 2015

June 15, 2016

August 9, 2017

February 6, 2018

July 26, 2018

   File Reference

   001-01839, Form 8-K dated August 2, 2010

   Exhibit No.
   4.1

001-01839, Form 8-K dated September 7,
2011

4.1

   4.1

   4.1

   001-01839, Form 8-K dated August 19, 2013

   001-01839, Form 8-K dated January 10, 2014    4.1

001-01839, Form 8-K dated November 10,
2014

4.1

  001-01839, Form 8-K dated March 2, 2015

  4.1

001-01839, Form 8-K dated November 19,
2015

4.1

  001-01839, Form 8-K dated June 27, 2016

  4.1

  001-01839, Form 8-K dated August 23, 2017

  4.1

  001-01839, Form 8-K dated February 20, 2018   4.1

  001-01839, Form 8-K dated August 14, 2018

  4.1

Exhibit No.

4-3-2

4-3-3

4-4

4-5

4-6

4-7

4-8

Description
Instrument of Registration, Appointment and Acceptance dated as of February 20, 2002, under the provisions of the Mortgage of
Commonwealth Edison Company dated July 1, 1923, and Indentures Supplemental thereto, regarding corporate trustee (File No. 1-1839,
2001 Form 10-K, Exhibit 4-4-2).

Instrument dated as of January 31, 1996, under the provisions of the Mortgage of Commonwealth Edison Company dated July 1, 1923 and
Indentures Supplemental thereto, regarding individual trustee (File No. 1-1839, 1995 Form 10-K, Exhibit 4-29).

Indenture dated as of September 1, 1987 between Commonwealth Edison Company and Citibank, N.A. (U.S. Bank National Association, as
current successor trustee), Trustee relating to Notes (Registration No. 33-20619, Form S-3, Exhibit 4-13). (a)

Indenture dated December 19, 2003 between Exelon Generation Company, LLC and U.S. Bank National Association (File No. 333-85496,
2003 Form 10-K, Exhibit 4-6).

Indenture to Subordinated Debt Securities dated as of June 24, 2003 between PECO Energy Company, as Issuer, and U.S. Bank National
Association, as Trustee (File No. 000-16844, June 30, 2003 Form 10-Q, Exhibit 4.1).

Form of 4.25% Senior Note due 2022 issued by Exelon Generation Company, LLC. (File 333-85496, Form 8-K dated June 18, 2012, Exhibit
4.1).

Form of 5.60% Senior Note due 2042 issued by Exelon Generation Company, LLC. (File 333-85496, Form 8-K dated June 18, 2012, Exhibit
4.2).

516

 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

Description

4-9

4-10

4-11

4-12

4-13

4-14

4-15

4-16

4-17

4-18

4-19

4-20

4-21

4-22

4-23

4-24

Form of 2.80% Senior Note due 2022 issued by Baltimore Gas and Electric Company. (File 1-1910, Form 8-K dated August 17, 2012,
Exhibit 4.1).

Form of 3.35% Senior Note due 2023 Baltimore Gas and Electric Company. (File 1-1910, Form 8-K dated June 17, 2013, Exhibit 4.1).

Form of 6.000% Senior Secured Notes due 2033 issued by Exelon Generation Company, LLC (File No. 333-85496, Form 8-K dated
September 30, 2013, Exhibit No. 4.1).

Preferred Securities Guarantee Agreement between PECO Energy Company, as Guarantor, and U.S. Bank National Association, as
Trustee, dated as of June 24, 2003 (File No. 000-16844, June 30, 2003 Form 10-Q, Exhibit 4.2).

PECO Energy Capital Trust IV Amended and Restated Declaration of Trust among PECO Energy Company, as Sponsor, U.S. Bank Trust
National Association, as Delaware Trustee and Property Trustee, and J. Barry Mitchell, George R. Shicora and Charles S. Walls as
Administrative Trustees dated as of June 24, 2003 (File No. 000-16844, June 30, 2003 Form 10-Q, Exhibit 4.3).

Indenture dated May 1, 2001 between Exelon Corporation and The Bank of New York Mellon Trust Company, National Association, as
trustee (File No. 1-16169, June 30, 2005 Form 10-Q, Exhibit 4-10).

Form of $500,000,000 5.625% senior notes due 2035 dated June 9, 2005 issued by Exelon Corporation (File No. 1-16169, Form 8-K dated
June 9, 2005, Exhibit 99.3).

Indenture dated as of September 28, 2007 from Exelon Generation Company, LLC to U.S. Bank National Association, as trustee (File 333-
85496, Form 8-K dated September 28, 2007, Exhibit 4.1).

Form of 5.20% Exelon Generation Company, LLC Senior Note due 2019 (File 333-85496, Form 8-K dated September 23, 2009, Exhibit 4.1).

Form of 6.25% Exelon Generation Company, LLC Senior Note due 2039 (File 333-85496, Form 8-K dated September 23, 2009, Exhibit 4.2).

Form of 4.00% Exelon Generation Company, LLC Senior Note due 2020 (File No. 333-85496, Form 8-K dated September 30, 2010, Exhibit
4.1).

Form of 5.75% Exelon Generation Company, LLC Senior Note due 2041 (File No. 333-85496, Form 8-K dated September 30, 2010, Exhibit
4.2).

Indenture between Constellation Energy Group, Inc. and the Bank of New York, Trustee dated as of March 24, 1999. (Designated as Exhibit
No. 4(a) to the Registration Statement on Form S-3 dated March 29, 1999, filed by Constellation Energy Group, Inc., File No. 333-75217.)

First Supplemental Indenture between Constellation Energy Group, Inc. and the Bank of New York, Trustee dated as of January 24, 2003.
(Designated as Exhibit No. 4(b) to the Registration Statement on Form S-3 dated January 24, 2003, filed by Constellation Energy Group,
Inc., File No. 333-102723).

Indenture dated as of July 24, 2006 between Constellation Energy Group, Inc. and Deutsche Bank Trust Company Americas, as trustee.
(Designated as Exhibit No. 4(a) to the Registration Statement on Form S-3 filed July 24, 2006, filed by Constellation Energy Group, Inc., File
No. 333-135991).

First Supplemental Indenture between Constellation Energy Group, Inc. and Deutsche Bank Trust Company Americas, as trustee, dated as
of June 27, 2008. (Designated as Exhibit 4(a) to the Current Report on Form 8-K dated June 30, 2008, filed by Constellation Energy Group,
Inc., File No. 1-12869).

517

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

4-25

4-26

4-27

4-28

4-29

4-30

4-31

4-32

4-33

4-34

4-35

Description
Indenture dated June 19, 2008 between Constellation Energy Group, Inc. and Deutsche Bank Trust Company Americas, as trustee.
(Designated as Exhibit No. 4(a) to the Quarterly Report on Form 10-Q for the quarter ended June 30, 2008, filed by Constellation Energy
Group, Inc., File Nos. 1-12869 and 1-1910).

Indenture, dated as of September 30, 2013, among Continental Wind, LLC, the guarantors party thereto and Wilmington Trust, National
Association, as trustee (File No. 333-85496, Form 8-K dated September 30, 2013, Exhibit No. 4.1).

Indenture dated July 1, 1985, between Baltimore Gas and Electric Company and The Bank of New York (Successor to Mercantile-Safe
Deposit and Trust Company), Trustee. (Designated as Exhibit 4(a) to the Registration Statement on Form S-3, File No. 2-98443); as
supplemented by Supplemental Indentures dated as of October 1, 1987 (Designated as Exhibit 4(a) to the Current Report on Form 8-K,
dated November 13, 1987, File No. 1-1910) and as of January 26, 1993 (Designated as Exhibit 4(b) to the Current Report on Form 8-K,
dated January 29, 1993, filed by Baltimore Gas and Electric Company, File No. 1-1910). (a)

Indenture and Security Agreement dated as of July 9, 2009, between Baltimore Gas and Electric Company and Deutsche Bank Trust
Company Americas, as trustee (Designated as Exhibit No. 4(u) to Post-Effective Amendment No. 1 to the Registration Statement on Form
S-3 dated July 9, 2009, filed by Constellation Energy Group, Inc., File Nos. 333-157637 and 333-157637-01).

Indenture dated as of July 24, 2006 between Baltimore Gas and Electric Company and Deutsche Bank Trust Company Americas, as
trustee. (Designated as Exhibit 4(b) to the Registration Statement on Form S-3 filed July 24, 2006, filed by Constellation Energy Group, Inc.,
File No. 333-135991).

Supplemental Indenture No. 1, dated as of October 1, 2009, to the Indenture and Security Agreement dated as of July 9, 2009, between
Baltimore Gas and Electric Company and Deutsche Bank Trust Company Americas, as trustee. (Designated as Exhibit No. 4(c) to the
Quarterly Report on Form 10-Q for the quarter ended September 30, 2009, filed by Constellation Energy Group, Inc., File Nos. 1-12869 and
1-1910).

Baltimore Gas and Electric Company Deed of Easement and Right-of-Way Grant dated as of July 9, 2009 (Designated as Exhibit No. 4(u)(2)
to Post-Effective Amendment No. 1 to the Registration Statement on Form S-3 dated July 9, 2009, filed by Constellation Energy Group, Inc.,
File Nos. 333-157637 and 333-157637-01).

Indenture dated as of June 29, 2007, by and between RSB BondCo LLC and Deutsche Bank Trust Company Americas, as Trustee and
Securities Intermediary. (Designated as Exhibit 4.1 to the Current Report on Form 8-K dated July 5, 2007, filed by Baltimore Gas and
Electric Company, File No. 1-1910).

Series Supplement to Indenture dated as of June 29, 2007 by and between RSB BondCo LLC and Deutsche Bank Trust Company
Americas, as Trustee and Securities Intermediary (Designated as Exhibit No. 4(b) to the Quarterly Report on Form 10-Q for the quarter
ended September 30, 2009, filed by Baltimore Gas and Electric Company, File No. 1-1910).

Replacement Capital Covenant dated June 27, 2008. (Designated as Exhibit No. 4(b) to the Current Report on Form 8-K dated June 30,
2008, filed by Constellation Energy Group, Inc., File No. 1-12869).

Amendment to Replacement Capital Covenant, dated as of March 12, 2012, amending the Replacement Capital Covenant, dated as of June
27, 2008 (File No. 001-16169, Form 8-K dated March 14, 2012, Exhibit No. 99.4).

518

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

4-36

4-37

4-38

4-38-1

Description
Officers’ Certificate, dated December 14, 2010, establishing the 5.15% Notes due December 1, 2020 of Constellation Energy Group, Inc.,
with the form of Notes attached thereto. (Designated as Exhibit No. 4 (b) to the Current Report on Form 8-K dated December 14, 2010, filed
by Constellation Energy Group, Inc., File No. 1-12869).

Officers’ Certificate, November 16, 2011, establishing the 3.50% Notes due November 15, 2021 of Baltimore Gas and Electric Company,
with the form of Notes attached thereto. (Designated as Exhibit No. 4(b) to the Current Report on Form 8-K dated November 16, 2011, filed
by Baltimore Gas and Electric Company, File No. 1-1910).

Indenture, dated as of June 17, 2014, between Exelon Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee.
(File No. 001-16169, Form 8-K dated June 23, 2014, Exhibit 4.1).

First Supplemental Indenture, dated as of June 17, 2014, between Exelon Corporation and The Bank of New York Mellon Trust Company,
N.A., as Trustee. (File No. 001-16169, Form 8-K dated June 23, 2014, Exhibit 4.2).

4-38-2

Form of 2.50% Notes due 2024 (File No. 001-16169, Form 8-K dated June 23, 2014, Exhibit 4.2, Exhibit A).

4-38-3

4-38-4

4-38-5

4-38-6

4-39

4-39-1

4-39-2

4-39-3

4-40

4-41

Purchase Contract and Pledge Agreement, between Exelon Corporation and The Bank of New York Mellon Trust Company, N.A., as
Purchase Contract Agent, Collateral Agent, Custodial Agent and Securities Intermediary. (File No. 001-16169, Form 8-K dated June 23,
2014, Exhibit 4.4).

Form of Remarketing Agreement (File No. 001-16169, Form 8-K dated June 23, 2014, Exhibit 4.4, Exhibit P).

Form of Corporate Unit (File No. 001-16169, Form 8-K dated June 23, 2014, Exhibit 4.4, Exhibit A).

Form of Treasury Unit (File No. 001-16169, Form 8-K dated June 23, 2014, Exhibit 4.4, Exhibit B).

Indenture, dated as of June 11, 2015, among Exelon Corporation and The Bank of New York Mellon Trust Company, National Association,
as trustee (incorporated herein by reference to Exhibit 4.1 to Exelon Corporation’s Current Report on Form 8-K, filed on June 11, 2015).

First Supplemental Indenture,  dated as of June 11, 2015, among Exelon Corporation and The Bank of New York Mellon Trust Company,
National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to Exelon Corporation’s Current Report on Form 8-K, filed
on June 11, 2015).

Second  Supplemental  Indenture,  dated  as  of  December  2,  2015,  among  Exelon  Corporation  and  The  Bank  of  New  York  Mellon  Trust
Company, National Association, as trustee (incorporated herein by reference to Exhibit 4.1 to Exelon Corporation’s Current Report on Form
8-K, filed on December 2, 2015).

Registration Rights Agreement, dated as of December 2, 2015, among Exelon Corporation, Barclays Capital Inc. and Goldman, Sachs & Co.
(incorporated herein by reference to Exhibit 1.1 to Exelon Corporation’s Current Report on Form 8-K, filed on December 2, 2015).

Form of Conversion Supplemental Indenture, dated March 23, 2016 (File No. 001-31403, Form 8-K dated March 24, 2016, Exhibit 4.1)

Third Supplemental Indenture, dated as of April 7, 2016, among Exelon Corporation and The Bank of New York Mellon Trust Company,
N.A., as trustee (File No. 001-16169, Form 8-K dated April 7, 2016, Exhibit 4.2)

519

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

4-42

Description
Mortgage and Deed of Trust, dated July 1, 1936, of Potomac Electric Power Company to The Bank of New York Mellon as successor
trustee, securing First Mortgage Bonds of Potomac Electric Power Company, and Supplemental Indenture dated July 1, 1936 (File No. 2-
2232, Registration Statement dated June 19, 1936, Exhibit B-4) (a)

4-42-1

Supplemental Indentures to Potomac Electric Power Company Mortgage.

Dated as of

  File Reference

December 10, 1939

  Form 8-K, 1/3/40 (a)

  Exhibit No.

  B

July 15, 1942

   2-5032, Amendment No 2. To Registration

B-1

October 15, 1947

December 31, 1948

December 31, 1949

February 15, 1951

February 16, 1953

Statement, 8/24/42 (a)

   Form 8-K , 12/8/47 (a)

   Form 10-K, 4/13/49 (a)

   Form 8-K, 2/8/50 (a)

   Form 8-K, 3/9/51 (a)

   Form 8-K, 3/5/53 (a)

March 15, 1954 and March 15, 1955

   2-11627, Registration Statement, 5/2/55 (a)

March 15, 1956

   Form 10-K, 4/4/56 (a)

  A

  A-2

  (a)-1

  (a)

  (a)-1

  4-B

  C

  4-B

  2-B

April 1, 1957

May 1, 1958

May 1, 1959

May 2, 1960

April 3, 1961

May 1, 1962

May 1, 1963

April 23, 1964

May 3, 1965

June 1, 1966

April 28, 1967

   2-13884, Registration Statement, 2/5/58 (a)

   2-14518, Registration Statement, 11/10/58 (a)

   2-15027, Amendment No. 1 to Registration

4-B

Statement, 5/13/59 (a)

   2-17286, Registration Statement, 11/9/60 (a)

  Form 10-K, 4/24/61 (a)

  2-B

  A-1

  2-21037, Registration Statement, 1/25/63 (a)

  2-B

  2-21961, Registration Statement, 12/19/63 (a)

  4-B

  2-22344, Registration Statement, 4/24/64 (a)

  2-B

  2-24655, Registration Statement, 3/16/66 (a)

  2-B

  Form 10-K, 4/11/67 (a)

2-26356, Post-Effective Amendment No. 1 to
Registration Statement, 5/3/67 (a)

  1

2-B

520

 
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
Table of Contents

Dated as of

July 3, 1967

May 1, 1968

June 16, 1969

May 15, 1970

September 1, 1971

June 17, 1981

November 1, 1985

September 16, 1987

May 1, 1989

May 21, 1991

May 7, 1992

September 1, 1992

November 1, 1992

July 1, 1993

February 10, 1994

February 11, 1994

October 2, 1997

  File Reference

  Exhibit No.

  2-28080, Registration Statement, 1/25/68 (a)

  2-B

  2-31896, Registration Statement, 2/28/69 (a)

  2-B

  2-36094, Registration Statement, 1/27/70 (a)

  2-B

  2-38038, Registration Statement, 7/27/70 (a)

  2-B

  2-45591, Registration Statement, 9/1/72 (a)

  2-C

  Amendment No. 1 to Form 8-A, 6/18/81 (a)

  2

  Form 8-A, 11/1/85 (a)

33-18229, Registration Statement, 10/30/87
(a)

  2B

4-B

  33-29382, Registration Statement, 6/16/89 (a)

  4-C

  Form 10-K, 3/27/92 (a)

  Form 10-K, 3/26/93 (a)

  Form 10-K, 3/26/93 (a)

  Form 10-K, 3/26/93 (a)

  4

  4

  4

  4

  33-49973, Registration Statement, 8/11/93 (a)

  4.4

  001-01072, Form 10-K, 3/25/94

  001-01072, Form 10-K, 3/25/94

  001-01072, Form 10-K, 3/27/98

  4

  4

  4

  4.1

  4.3

  4.2

  4

  4.2

  4.1

November 17, 2003

  001-01072, Form 10-K, 3/12/04

March 16, 2004

May 24, 2005

April 1, 2006

  001-01072, Form 8-K, 3/23/04

  001-01072, Form 8-K, 5/26/05

  001-01072, Form 8-K, 4/17/06

November 13, 2007

  001-01072, Form 8-K, 11/15/07

March 24, 2008

  001-01072, Form 8-K, 3/28/08

521

 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
Table of Contents

Dated as of

December 3, 2008

March 28, 2012

March 11, 2013

  File Reference

  Exhibit No.

  001-01072, Form 8-K, 12/8/08

  001-01072, Form 8-K, 3/29/12

  001-01072, Form 8-K, 3/12/13

November 14, 2013

  001-01072, Form 8-K, 11/15/13

March 11, 2014

March 9, 2015

May 15, 2017

June 1, 2018

  001-01072, Form 8-K, 3/12/14

  001-01072, Form 8-K, 3/10/15

  001-01072, Form 8-K, 5/22/17

001-01072, Form 8-K, 6/21/2018

  4.2

  4.2

  4.2

  4.2

  4.2

  4.3

  4.2

4.2

Exhibit No.

4-43

4-44

4-44-1

4-45

Description
Indenture, dated as of July 28, 1989, between Potomac Electric Power Company and The Bank of New York Mellon, Trustee, with respect to
Medium-Term Note Program (File No. 001-01072, Form 8-K dated June 21, 1990, Exhibit 4) (a)

Senior Note Indenture, dated November 17, 2003 between Potomac Electric Power Company and The Bank of New York Mellon (File No.
001-01072, Form 8-K dated November 21, 2003, Exhibit 4.2)

Supplemental Indenture, dated March 3, 2008, to Senior Note Indenture between Potomac Electric Power Company and The Bank of New
York Mellon (File No. 001-01072, Form 10-K dated March 2, 2009, Exhibit 4.3)

Mortgage and Deed of Trust of Delaware Power & Light Company to The Bank of New York Mellon (ultimate successor to the New York
Trust Company), as trustee, dated as of October 1, 1943, and copies of the First through Sixty-Eighth Supplemental Indentures thereto (File
No. 33-1763, Registration Statement dated November 27, 1985, Exhibit 4-A) (a)

4-45-1

Supplemental Indentures to Delmarva Power & Light Company Mortgage.

Dated as of

January 1, 1986

June 1, 1986

January 1, 1987

September 1, 1987

October 1, 1987

January 1, 1988

  File Reference

  Exhibit No.

  33-39756, Registration Statement, 4/03/91 (a)

  4-B

33-24955, Registration Statement, 10/13/88
(a)

33-24955, Registration Statement, 10/13/88
(a)

33-24955, Registration Statement, 10/13/88
(a)

33-24955, Registration Statement, 10/13/88
(a)

33-24955, Registration Statement, 10/13/88
(a)

4-B

4-B

4-B

4-B

4-B

522

 
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
   
   
 
 
   
   
 
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
Table of Contents

Dated as of

December 1, 1988

January 1, 1989

March 1, 1990

January 1, 1991

July 1, 1991

February 1, 1992

May 1, 1992

October 1, 1992

January 1, 1993

June 1, 1993

July 1, 1993

October 1, 1993

January 1, 1994

October 1, 1994

January 1, 1995

June 1, 1995

January 1, 1996

January 1, 1997

January 1, 1998

January 1, 1999

January 1, 2000

  File Reference
  33-39756, Registration Statement, 4/03/91 (a)

  Exhibit No.

  4-D

  33-39756, Registration Statement, 4/03/91 (a)

  4-E

  33-39756, Registration Statement, 4/03/91 (a)

  4-F

  33-46892, Registration Statement, 4/1/92 (a)

  4-E

  33-46892, Registration Statement, 4/1/92 (a)

  4-F

  33-49750, Registration Statement, 7/17/92 (a)

  4

  33-57652, Registration Statement, 1/29/93 (a)

  4-G

  33-63582, Registration Statement, 5/28/93 (a)

  4-H

  33-50453, Registration Statement, 10/1/93 (a)

  99

  33-53855, Registration Statement, 1/30/95 (a)

  4-J

  33-53855, Registration Statement, 1/30/95 (a)

  4-K

  33-53855, Registration Statement, 1/30/95 (a)

  4-L

  33-53855, Registration Statement, 1/30/95 (a)

  4-M

  33-53855, Registration Statement, 1/30/95 (a)

  4-N

333-00505, Registration Statement, 1/29/96
(a)

333-00505, Registration Statement, 1/29/96
(a)

333-24059, Registration Statement, 3/27/97
(a)

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

4-K

4-L

4-L

  4.4

  4.4

  4.4

333-145691-02, Post Effective Amendment
No. 1 to Registration Statement, 11/18/08

4.24(k)

523

 
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
Table of Contents

Dated as of

January 1, 2001

January 1, 2002

January 1, 2003

January 1, 2004

January 1, 2005

January 1, 2006

January 1, 2007

January 1, 2008

January 1, 2009

  File Reference

  Exhibit No.

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

  001-01405, Form 10-K, 2/24/12

September 22, 2009

  001-01405, Form 8-K, 10/1/09

January 1, 2010

January 1, 2011

May 2, 2011

January 1, 2012

June 19, 2012

January 1, 2013

  001-01405, Form 10-K, 2/25/11

  001-01405, Form 10-Q, 8/3/11

  001-01405, Form 8-K, 6/3/11

  001-01405, Form 10-Q, 8/7/12

  001-01405, Form 8-K, 6/20/12

  001-01405, Form 10-Q, 8/7/13

November 7, 2013

  001-01405, Form 8-K, 11/8/13

January 1, 2014

June 2, 2014

January 1, 2015

May 4, 2015

January 1, 2016

  001-01405, Form 10-K, 2/27/15

  001-01405, Form 8-K, 6/3/14

  001-01405, Form 10-K, 2/19/16

  001-01405, Form 8-K, 5/5/15

  001-01405, Form 10-K, 2/13/17

December 5, 2016

  001-01405, Form 8-K, 12/12/16

524

  4.4

  4.4

  4.4

  4.4

  4.4

  4.4

  4.4

  4.4

  4.4

  4.4

  4.4

  4.2

  4.2

  4.3

  4.2

  4.1

  4.2

  4.4

  4.3

  4.4

  4.2

  4.45.1

  4.2

 
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
Table of Contents

Dated as of

April 5, 2017

April 3, 2018

June 1, 2018

Exhibit No.

Description

  File Reference

  001-01405, Form 10-Q, 5/3/17

  000-01405, Form 10-Q, 5/2/18

  000-01405, Form 8-K, 6/21/18

  Exhibit No.

  4.5

  4.3

  4.2

4-46

4-47

Indenture between Delmarva Power & Light Company and The Bank of New York Mellon Trust Company, N.A. (ultimate successor to
Manufacturers Hanover Trust Company), as trustee, dated as of November 1, 1988 (File No. 33-46892, Registration Statement dated April 1,
1992, Exhibit 4-G) (a)

Mortgage and Deed of Trust, dated January 15, 1937, between Atlantic City Electric Company and The Bank of New York Mellon (formerly
Irving Trust Company), as trustee (File No. 2-66280, Registration Statement dated December 21, 1979, Exhibit 2(a)) (a)

4-47-1

Supplemental Indentures to Atlantic City Electric Company Mortgage.

Dated as of

June 1, 1949

July 1, 1950

November 1, 1950

March 1, 1952

January 1, 1953

March 1, 1954

March 1, 1955

January 1, 1957

April 1, 1958

April 1, 1959

March 1, 1961

July 1, 1962

March 1, 1963

  File Reference

  Exhibit No.

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

525

 
 
 
 
 
   
   
 
 
 
 
   
   
 
 
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
Table of Contents

Dated as of

February 1, 1966

April 1, 1970

September 1, 1970

May 1, 1971

April 1, 1972

June 1, 1973

January 1, 1975

May 1, 1975

December 1, 1976

January 1, 1980

May 1, 1981

November 1, 1983

April 15, 1984

July 15, 1984

October 1, 1985

May 1, 1986

July 15, 1987

October 1, 1989

March 1, 1991

May 1, 1992

January 1, 1993

August 1, 1993

September 1, 1993

November 1, 1993

June 1, 1994

October 1, 1994

  File Reference

  Exhibit No.

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

2-66280, Registration Statement, 12/21/79
(a)

  Form 10-K, 3/25/81 (a)

  Form 10-Q, 8/10/81 (a)

  Form 10-K, 3/30/84 (a)

  Form 10-Q, 5/14/84 (a)

  Form 10-Q, 8/13/84 (a)

  Form 10-Q, 11/12/85 (a)

  Form 10-Q, 5/12/86 (a)

  Form 10-K, 3/28/88 (a)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

2(b)

  4(e)

  4(a)

  4(d)

  4(a)

  4(a)

  4

  4

  4(d)

  Form 10-Q for quarter ended 9/30/89 (A)

  4(a)

  Form 10-K, 3/28/91 (a)

  4(d)(1)

  33-49279, Registration Statement, 1/6/93 (a)   4(b)

333-108861, Registration Statement,
9/17/03

4.05(hh)

  Form 10-Q, 11/12/93 (a)

  Form 10-Q, 11/12/93 (a)

  Form 10-K, 3/29/94 (a)

  Form 10-Q, 8/14/94 (a)

  Form 10-Q, 11/14/94 (a)

526

  4(a)

  4(b)

  4(c)(1)

  4(a)

  4(a)

 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
Table of Contents

Dated as of

November 1, 1994

March 1, 1997

April 1, 2004

August 10, 2004

March 8, 2006

  File Reference
  Form 10-K, 3/21/95 (a)

  Exhibit No.
  4(c)(1)

  001-03559, Form 8-K, 3/24/97

  001-03559, Form 8-K, 4/6/04

  001-03559, Form 10-Q, 11/9/04

  001-03559, Form 8-K, 3/17/06

  4(b)

  4.3

  4

  4

  4.2

  4.2

  4.2

  4.2

  4.1

November 6, 2008

  001-03559, Form 8-K, 11/10/08

March 29, 2011

August 18, 2014

December 1, 2015

October 9, 2018

  001-03559, Form 8-K, 4/1/11

  001-03559, Form 8-K, 8/19/14

  001-03559, Form 8-K, 12/2/15

  001-03559, Form 8-K, 10/16/18

Exhibit No.

4-48

4-49

4-50

4-51

4-52

4-53

4-54

4-55

4-56

4-57

Description
Indenture, dated as of March 1, 1997, between Atlantic City Electric Company and The Bank of New York Mellon, as trustee (File No. 001-
03559, Form 8-K dated March 24, 1997, Exhibit 4.2)

Senior Note Indenture, dated as of April 1, 2004, between Atlantic City Electric Company and The Bank of New York Mellon, as trustee (File
No. 001-03559, Form 8-K dated April 6, 2004, Exhibit 4.2)

Indenture, dated as of December 19, 2002 between Atlantic City Electric Transition Funding LLC and The Bank of New York Mellon, as
trustee (File No. 333-59558, Form 8-K dated December 23, 2002, Exhibit 4.1)

2002-1 Series Supplement, dated as of December 19, 2002 between Atlantic City Electric Transition Funding LLC and The Bank of New
York Mellon, as trustee (File No. 333-59558, Form 8-K dated December 23, 2002, Exhibit 4.2)

2003-1 Series Supplement, dated as of December 23, 2003 between Atlantic City Electric Transition Funding LLC and The Bank of New
York Mellon, as trustee (File No. 333-59558, Form 8-K dated December 23, 2003, Exhibit 4.2)

Indenture, dated September 6, 2002, between Pepco Holdings, Inc. and The Bank of New York Mellon, as trustee (File No. 333-100478,
Registration Statement on Form S-3 dated October 10, 2002, Exhibit 4.03)

Corporate Commercial Paper Master Note (File No. 001-31403, Form 10-K dated February 24, 2012, Exhibit 4.13)

Pepco Holdings, Inc. Certificate of Series A Non-Voting Non-Convertible Preferred Stock (File No. 001-31403, Form 8-k dated April 30,
2014, Exhibit 3.1)

Form of 2.400% notes due 2026 (File No. 001-01910, Form 8-K dated August 18, 2016, Exhibit 4.1)

Form of 3.500% notes due 2046 (File No. 001-01910, Form 8-K dated August 18, 2016, Exhibit 4.2)

527

 
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

4-58

4-59

4-60

4-61

4-62

4-63

10-1

10-1-1

10-2

10-3

10-4

10-5

10-6

10-7

10-8

10-9

10-10

Description
Form of Exelon Generation Company, LLC 2.950% senior notes due 2020 (File No. 333-85496, Form 8-K dated March 10, 2017, Exhibit
4.1)

Form of Exelon Generation Company, LLC 3.400% notes due 2022 (File No. 333-85496, Form 8-K dated March 10, 2017, Exhibit 4.2)

Second Supplemental Indenture, dated April 3, 2017, between Exelon and The Bank of New York Mellon Trust Company, N.A., as trustee,
to that certain Indenture (For Unsecured Subordinated Debt Securities), dated June 17, 2014 (File No. 001-16169, Form 8-K dated April 4,
2017, Exhibit 4.3)

Form of Exelon Corporation 3.497% junior subordinated notes due 2022 (File No. 001-16169, Form 8-K dated April 4, 2017, Exhibit 4.4)

Form of First Mortgage Bond, 4.15% Series due March 15, 2043 (File No. 001-01072, Form 8-K dated May 22, 2017, Exhibit 4.2)

BGE Form of 3.750% notes due 2047 (File No. 001-01910, Form 8-K dated August 24, 2017, Exhibit 4.1)

Facility Credit Agreement, dated as of February 6, 2014, among ExGen Renewables I Holding, LLC and Barclays Bank PLC (File No. 333-
85496, Form 8-K dated February 12, 2014, Exhibit 10.1).

Credit Agreement, dated as of September 18, 2014, among ExGen Texas Power, LLC, ExGen Texas Power Holdings, LLC, Wolf Hollow I
Power, LLC, Colorado Bend I Power, LLC, Laporte Power, LLC, Handley Power, LLC and Mountain Creek Power, LLC, the lenders party
thereto from time to time, Bank of America, N.A., as administrative agent and collateral agent, and Wilmington Trust, National Association,
as depositary agent. (File No. 1-16169, Form 8-K dated September 18, 2014, Exhibit 10.1).

Exelon Corporation Non-Employee Directors’ Deferred Stock Unit Plan (As Amended and Restated Effective January 1, 2011). * (File No.
001-16169, 2010 Form 10-K, Exhibit 10.1).

Form of Exelon Corporation Unfunded Deferred Compensation Plan for Directors (as amended and restated Effective March 12, 2012). *
(File No. 1-16169, 2015 Form 10-K, Exhibit 10-3)

Reserved.

Form of Restricted Stock Award Agreement under the Exelon Corporation Long-Term Incentive Plan* (File No. 1-16169, 2001 Form 10-K,
Exhibit 10-6-1).

Forms of Transferable Stock Option Award Agreement under the Exelon Corporation Long-Term Incentive Plan* (File No. 1-16169, 2001
Form 10-K, Exhibit 10-6-2). 

Forms of Stock Option Award Agreement under the Exelon Corporation Long-Term Incentive Plan* (File No. 1-16169, 2001 Form 10-K,
Exhibit 10-6-3). 

Unicom Corporation Deferred Compensation Unit Plan, as amended *(File Nos. 1-11375 and 1-1839, 1995 Form 10-K, Exhibit 10-12). 

Amendment Number One to the Unicom Corporation Deferred Compensation Unit Plan, as amended January 1, 2008 * (File No. 001-16169,
2008 Form 10-K, Exhibit 10.16).

Unicom Corporation Retirement Plan for Directors, as amended *(Registration Statement No. 333-49780, Form S-8, Exhibit 4-12).

528

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

10-11

Description
Commonwealth Edison Company Retirement Plan for Directors, as amended *(Registration Statement No. 333-49780, Form S-8, Exhibit 4-
13).

10-12

10-13

10-14

10-15

10-16

10-17

10-18

10-19

10-20

10-21

Exelon Corporation Supplemental Management Retirement Plan (As Amended and Restated Effective January 1, 2009) * (File No. 001-
16169, 2008 Form 10-K, Exhibit 10.19).

PECO Energy Company Supplemental Pension Benefit Plan (As Amended and Restated Effective January 1, 2009) (File No. 000-16844,
2008 Form 10-K, Exhibit 10.20).

Exelon Corporation Annual Incentive Plan for Senior Executives (As Amended Effective January 1, 2014 * (File No. 1-16169, Exelon Proxy
Statement dated April 1, 2014, Appendix A).

Form of change in control employment agreement for senior executives effective January 1, 2009 * (File No. 001-16169. 2008 Form 10-K,
Exhibit 10.23).

Form of change in control employment agreement (amended and restated as of January 1, 2009) * (File No. 001-16169, 2008 Form 10-K,
Exhibit 10.24).

Exelon Corporation Employee Stock Purchase Plan, as amended and restated effective July 1, 2013. (File No. 1-16169, Schedule 14A
dated March 14, 2013 Appendix A).

Exelon Corporation 2006 Long-Term Incentive Plan (Registration Statement No. 333-122704, Form S-4, Joint Proxy Statement-Prospectus
pursuant to Rule 424(b)(3) filed June 3, 2005, Annex H).

Form of Stock Option Grant Instrument under the Exelon Corporation 2006 Long-Term Incentive Plan (File No. 1-16169, Form 8-K filed
January 27, 2006, Exhibit 99.2).

Exelon Corporation Employee Stock Purchase Plan for Unincorporated Subsidiaries (Registration Statement No. 333-122704, Form S-4,
Joint Proxy Statement-Prospectus pursuant to Rule 424(b)(3) filed June 3, 2005, Annex I).

Exelon Corporation Senior Management Severance Plan (As Amended and Restated Effective April 1, 2013).* (File No. 001-16169, 2013
Form 10-K, Exhibit 10.21).

10-21-1

Exelon Corporation Senior Management Severance Plan (As Amended and Restated Effective November 1, 2015) * (File No. 1-16169, 2015
Form 10-K, Exhibit 10-21-1)

10-22

10-23

10-24

10-25

10-26

10-27

Form of Separation Agreement under Exelon Corporation Senior Management Severance Plan (As Amended and Restated Effective
November 1, 2015).

Facility Credit Agreement, dated as of November 4, 2010, among Exelon Generation Company, LLC and UBS AG, Stamford Branch (File
No. 333-85496, Form 8-K dated February 22, 2011, Exhibit No. 10-1).

Exelon Corporation Executive Death Benefits Plan dated as of January 1, 2003 * (File No. 1-16169, 2006 Form 10-K, Exhibit 10-52).

First Amendment to Exelon Corporation Executive Death Benefits Plan, Effective January 1, 2006 * (File No. 1-16169, 2006 Form 10-K,
Exhibit 10-53).

Amendment Number One to the Exelon Corporation 2006 Long-Term Incentive Plan, Effective December 4, 2006 (File No. 1-16169, 2006
Form 10-K, Exhibit 10-54).

Amendment Number Two to the Exelon Corporation 2006 Long-Term Incentive Plan (As Amended and Restated Effective January 28,
2002), Effective December 4, 2006 (File No. 1-16169, 2006 Form 10-K, Exhibit 10-55).

529

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

10-28

Description
Exelon Corporation Deferred Compensation Plan (As Amended and Restated Effective January 1, 2005) (File No. 1-16169, 2006 Form 10-
K, Exhibit 10-56).

10-29

10-30

10-31

10-32

10-33

10-34

10-34-1

10-34-2

10-34-3

10-35

10-36

10-37

10-38

10-39

10-40

10-41

Exelon Corporation Stock Deferral Plan (As Amended and Restated Effective January 1, 2005) (File No. 1-16169, 2006 Form 10-K, Exhibit
10-57).

Commonwealth Edison Company Long-Term Incentive Plan, Effective January 1, 2007 (File No. 1-16169, March 31, 2007 Form 10-Q,
Exhibit 10-1).

Amendment Number One to the Exelon Corporation Stock Deferral Plan (As Amended and Restated Effective January 1, 2005) (File No. 1-
16169, June 30, 2007 Form 10-Q, Exhibit 10-3).

Restricted stock unit award agreement (File 1-16169, Form 8-K dated August 31, 2007, Exhibit 99.1).

Reserved.

Form of Exelon Corporation 2011 Long-Term Incentive Plan, as amended effective December 18, 2014. * (File No. 1-16169, 2015 Form 10-
K, Exhibit 10-34)

Form of Exelon Corporation Long-Term Incentive Program, as amended and restated as of January 1, 2014. * (File No. 1-16169, 2015 Form
10-K, Exhibit 10-34-1)

Form of Exelon Corporation Long-Term Incentive Program, as amended and restated as of January 1, 2015. * (File No. 1-16169, 2015 Form
10-K, Exhibit 10-34-2)

Amendment Number Two to the Exelon Corporation 2011 Long-Term Incentive Plan (As Amended and Restated Effective January 21,
2014), Effective October 26, 2015. * (File No. 1-16169, 2015 Form 10-K, Exhibit 10-34-3)

Form of Change in Control Employment Agreement Effective February 10, 2011. * (File 1-16169, 2010 Form 10-K, Exhibit 10-44).

Credit Agreement for $500,000,000 dated as of March 23, 2011 between Exelon Corporation and Various Financial Institutions (File No.
001-16169, Form 8-K dated March 23, 2011, Exhibit No. 99.1).

Credit Agreement for $5,300,000,000 dated as of March 23, 2011 between Exelon Generation Company, LLC and Various Financial
Institutions (File No. 333-85496, Form 8-K dated March 23, 2011, Exhibit No. 99.2).

Credit Agreement for $600,000,000 dated as of March 23, 2011 between PECO Energy Company and Various Financial Institutions (File
No. 000-16844, Form 8-K dated March 23, 2011, Exhibit No. 99.3).

Credit Agreement dated as of March 28, 2012 among Commonwealth Edison Company, Various Financial Institutions, as Lenders, and JP
Morgan Chase Bank, N.A., as Administrative Agent (File No. 001-01839, Form 8-K dated March 28, 2012, Exhibit No. 99-1).

Amendment No. 3 to Credit Agreement dated as of March 23, 2011 among Exelon Corporation, as Borrower, the various financial
institutions named therein, as Lenders, and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 001-16169, Form 8-K dated
August 10, 2013, Exhibit No. 99-1).

Amendment No. 1 to Credit Agreement dated as of March 28, 2012 among Commonwealth Edison Company, as Borrower, the various
financial institutions named therein, as Lenders and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 001-1839, Form 8-K
dated August 10, 2013, Exhibit No. 99-2).

530

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

10-42

Description
Amendment No. 1 to Credit Agreement, dated as of December 21, 2011, to the Credit Agreement dated as of March 23, 2011, among
Exelon Generation Company, LLC, the lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 001-16169,
Form 8-K dated March 14, 2012, Exhibit No. 4-6).

10-43

10-44

10-45

10-46

10-47

Constellation Energy Group, Inc. Nonqualified Deferred Compensation Plan, as amended and restated. * (Designated as Exhibit No. 10(b) to
the Constellation Annual Report on Form 10-K for the year ended December 31, 2008, filed by Constellation Energy Group, Inc., File Nos. 1-
12869 and 1-1910).

Constellation Energy Group, Inc. Deferred Compensation Plan for Non-Employee Directors, as amended and restated. * (Designated as
Exhibit No. 10(c) to the Constellation Annual Report on Form 10-K for the year ended December 31, 2008, filed by Constellation Energy
Group, Inc., File Nos. 1-12869 and 1-1910).

Constellation Energy Group, Inc. Benefits Restoration Plan, amended and restated effective June 1, 2010. * (Designated as Exhibit No.
10(b) to the Constellation Quarterly Report on Form 10-Q for the quarter ended June 30, 2010, filed by Constellation Energy Group, Inc.,
File Nos. 1-12869 and 1-1910).

Constellation Energy Group, Inc. Supplemental Pension Plan, as amended and restated. * (Designated as Exhibit No. 10(e) to the
Constellation Annual Report on Form 10-K for the year ended December 31, 2008, filed by Constellation Energy Group, Inc., File Nos. 1-
12869 and 1-1910).

Constellation Energy Group, Inc. Senior Executive Supplemental Plan, as amended and restated. * (Designated as Exhibit No. 10(f) to the
Constellation Annual Report on Form 10-K for the year ended December 31, 2008, filed by Constellation Energy Group, Inc., File Nos. 1-
12869 and 1-1910).

531

 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

10-48

Description
Executive Annual Incentive Plan of Constellation Energy Group, Inc., as amended and restated. * (Designated as Exhibit No. 10(d) to the
Quarterly Report on Form 10-Q for the quarter ended September 30, 2008, filed by Constellation Energy Group, Inc., File Nos. 1-12869 and
1-1910).

10-49

10-50

10-51

10-52

10-53

10-54

10-55

10-56

10-57

10-58

10-59

Constellation Energy Group, Inc. Executive Supplemental Benefits Plan, as amended and restated. * (Designated as Exhibit No. 10(a) to the
Constellation Quarterly Report on Form 10-Q for the quarter ended June 30, 2008, filed by Constellation Energy Group, Inc., File Nos. 1-
12869 and 1-1910).

Constellation Energy Group, Inc. 1995 Long-Term Incentive Plan, as amended and restated. * (Designated as Exhibit No. 10(b) to the
Constellation Quarterly Report on Form 10-Q for the quarter ended September 30, 2004, filed by Constellation Energy Group, Inc., File Nos.
1-12869 and 1-1910).

Constellation Energy Group, Inc. Executive Long-Term Incentive Plan, as amended and restated. * (Designated as Exhibit 10(b) to the
Constellation Quarterly Report on Form 10-Q for the quarter ended June 30, 2011, filed by Constellation Energy Group, Inc., File Nos. 1-
12869 and 1-1910).

Constellation Energy Group, Inc. 2002 Senior Management Long-Term Incentive Plan, as amended and restated. * (Designated as Exhibit
10(a) to the Constellation Quarterly Report on Form 10-Q for the quarter ended June 30, 2011, filed by Constellation Energy Group, Inc.,
File Nos. 1-12869 and 1-1910).

Constellation Energy Group, Inc. Management Long-Term Incentive Plan, as amended and restated. * (Designated as Exhibit 10(d) to the
Constellation Quarterly Report on Form 10-Q for the quarter ended September 30, 2006, filed by Constellation Energy Group, Inc., File Nos.
1-12869 and 1-1910).

Constellation Energy Group, Inc. Amended and Restated 2007 Long-Term Incentive Plan. * (Designated as Exhibit No. 10.1 to the Current
Report on Form 8-K dated June 4, 2010, filed by Constellation Energy Group, Inc., File No. 1-12869).

Form of Grant Agreement for Stock Units with Sales Restriction. * (Designated as Exhibit No. 10(x) to the Annual Report on Form 10-K for
the year ended December 31, 2010, filed by Constellation Energy Group, Inc., File Nos. 1-12869 and 1-1910).

Rate Stabilization Property Servicing Agreement dated as of June 29, 2007 by and between RSB BondCo LLC and Baltimore Gas and
Electric Company, as servicer (Designated as Exhibit 10.2 to the Current Report on Form 8-K dated July 5, 2007, filed by Baltimore Gas and
Electric Company, File No. 1-1910).

Administration Agreement dated as of June 29, 2007 by and between RSB BondCo LLC and Baltimore Gas and Electric Company, as
administrator (Designated as Exhibit 10.3 to the Current Report on Form 8-K dated July 5, 2007, filed by Baltimore Gas and Electric
Company, File No. 1-1910).

Second Amended and Restated Operating Agreement, dated as of November 6, 2009, by and among Constellation Energy Nuclear Group,
LLC, Constellation Nuclear, LLC, CE Nuclear, LLC, EDF Development Inc., and for certain limited purposes, E.D.F. International S.A. and
Constellation Energy Group, Inc. (Designated as Exhibit No. 10.1 to the Current Report on Form 8-K dated November 12, 2009, filed by
Constellation Energy Group, Inc., File No. 1-12869).

Amendment No. 1 to the Second Amended and Restated Operating Agreement of Constellation Energy Nuclear Group, LLC, by and among
Constellation Nuclear, LLC, CE Nuclear, LLC, EDF Inc. (formerly known as EDF Development, Inc.), and E.D.F. International S.A.
(Designated as Exhibit No. 10(s) to the Annual Report on Form 10-K for the year ended December 31, 2010, filed by Constellation Energy
Group, Inc., File Nos. 1-12869 and 1-1910).

532

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

10-60

10-61

10-62

10-63

Description
Amendment No. 2 to the Second Amended and Restated Operating Agreement of Constellation Energy Nuclear Group, LLC, by and among
Constellation Nuclear, LLC, CE Nuclear, LLC, EDF Inc. (formerly known as EDF Development, Inc.), and E.D.F. International S.A.
(Designated as Exhibit No. 10(t) to the Annual Report on Form 10-K for the year ended December 31, 2010, filed by Constellation Energy
Group, Inc., File Nos. 1-12869 and 1-1910).

Amendment No. 3 to the Second Amended and Restated Operating Agreement of Constellation Energy Nuclear Group, LLC, by and among
Constellation Nuclear, LLC, CE Nuclear, LLC, EDF Inc. (formerly known as EDF Development, Inc.), and E.D.F. International S.A.
(Designated as Exhibit No. 10.1 to the Current Report on Form 8-K dated November 3, 2010, filed by Constellation Energy Group, Inc., File
No. 1-12869).

Termination Agreement dated as of November 3, 2010, by and among EDF Inc. (formerly known as EDF Development, Inc.), E.D.F.
International S.A., and Constellation Energy Group, Inc. (Designated as Exhibit No. 10.2 to the Current Report on Form 8-K dated November
3, 2010, filed by Constellation Energy Group, Inc., File No. 1-12869).

Settlement Agreement between EDF Inc., Exelon Corporation, Exelon Energy Delivery Company, LLC, Constellation Energy Group, Inc. and
Baltimore Gas and Electric Company dated January 16, 2012. (Designated as Exhibit No. 10.1 to the Current Report on Form 8-K dated
January 19, 2012, File Nos. 1-12869 and 1-1910).

10-64 - 10-70

Reserved.

10-71

10-71-1

10-71-2

10-71-3

10-71-4

10-71-5

10-72-1

Commitment Letter for $7.221 Billion Senior Unsecured Bridge Facility, dated April 29, 2014 (File No. 001-16169, Form 8-K dated April 30,
2014, Exhibit No. 10.1).

364-Day Bridge Term Loan Agreement, dated as of May 30, 2014, among Exelon Corporation, as Borrower, the various financial institutions
named therein, as Lenders, and Barclays Bank PLC, as Administrative Agent (File No. 001-16169, Form 8-K dated April 30, 2014, Exhibit
No. 10.1).

Amendment No. 4 to Credit Agreement, dated May 30, 2014, among Exelon Corporation, as Borrower, the financial institutions signatory
therein, as Lenders and JPMorgan Chase Bank, N.A., as Administrative Agent. (File No. 001-16169, Form 8-K dated June 4, 2014, Exhibit
10.2).

Amendment No. 4 to Credit Agreement, dated May 30, 2014, among Exelon Generation Company, LLC, as Borrower, the financial
institutions signatory therein, as Lenders and JPMorgan Chase Bank, N.A., as Administrative Agent. (File No. 001-16169, Form 8-K dated
June 4, 2014, Exhibit 10.3).

Amendment No. 3 to Credit Agreement, dated May 30, 2014, among PECO Energy Company, as Borrower, the financial institutions
signatory therein, as Lenders and JPMorgan Chase Bank, N.A., as Administrative Agent. (File No. 001-16169, Form 8-K dated June 4,
2014, Exhibit 10.4).

Amendment No. 2 to Credit Agreement, dated as of May 30, 2014, among Baltimore Gas and Electric Company, as Borrower, the financial
institutions signatory therein, as Lenders and The Royal Bank of Scotland plc, as Administrative Agent. (File No. 001-16169, Form 8-K dated
June 4, 2014, Exhibit 10.5).

Confirmation of Base Issuer Forward Transaction, dated June 11, 2014, between Exelon Corporation and Barclays Capital, Inc., acting as
Agent for Barclays Bank PLC (File No. 001-16169, Form 8-K dated June 17, 2014, Exhibit 10.1).

533

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

10-72-2

10-72-3

10-72-4

10-73

10-74

10-75

10-76

10-77

10-78

10-79

10-80

10-81

10-82

Description
Confirmation of Base Issuer Forward Transaction, dated June 11, 2014, between Exelon Corporation and Goldman Sachs & Co. (File No.
001-16169, Form 8-K dated June 17, 2014, Exhibit 10.2).

Confirmation of Additional Issuer Forward Transaction, dated June 13, 2014, between Exelon Corporation and Barclays Capital, Inc., acting
as Agent for Barclays Bank PLC (File No. 001-16169, Form 8-K dated June 17, 2014, Exhibit 10.3).

Confirmation of Additional Issuer Forward Transaction, dated June 13, 2014, between Exelon Corporation and Goldman Sachs & Co. (File
No. 001-16169, Form 8-K dated June 17, 2014, Exhibit 10.4).

Bondable Transition Property Sale Agreement, dated as of December 19, 2002, between ACE Funding and ACE (File No. 333-59558, Form
8-K dated December 23, 2002, Exhibit 10.1)

Bondable Transition Property Servicing Agreement, dated as of December 19, 2002, between ACE Funding and ACE (File No. 333-59558,
Form 8-K dated December 23, 2002, Exhibit 10.2)

Purchase Agreement, dated as of April 20, 2010, by and among Pepco Holdings, Inc., Conectiv, LLC, Conectiv Energy Holding Company,
LLC and New Development Holdings, LLC (File No. 001-31403, Form 8-K dated July 8, 2010, Exhibit 2.1)

Purchase Agreement, dated March 9, 2015, among Potomac Electric Power Company and BNY Mellon Capital Markets, LLC, Morgan
Stanley & Co. LLC, and RBS Securities Inc., as representatives of the several underwriters named therein (File No. 001-01072, Form 8-K
dated March 10, 2015, Exhibit 1.1)

Purchase Agreement, May 4, 2015, among Delmarva Power & Light Company and J.P. Morgan Securities LLC, Merrill Lynch, Pierce,
Fenner & Smith Incorporated, and Scotia Capital (USA) Inc., as representatives of the several underwriters named therein (File No. 001-
01405, Form 8-K dated May 5, 2015, Exhibit 1.1)

Bond Purchase Agreement, dated December 1, 2015, among Atlantic City Electric Company and the purchasers signatory thereto (File No.
001-03559, Form 8-K dated December 2, 2015, Exhibit 1.1)

$300,000,000 Term Loan Agreement by and among PHI, The Bank of Nova Scotia, as Administrative Agent, and the lenders party thereto,
dated July 30, 2015 (File No. 001-31403, Form 8-K dated July 30, 2015, Exhibit 10)

First Amendment to Term Loan Agreement, dated as of October 29, 2015, by and among PHI, The Bank of Nova Scotia, as Administrative
Agent, and the lenders party thereto (File No. 001-31403, Form 8-K dated October 29, 2015, Exhibit 10.2)

$500,000,000 Term Loan Agreement by and among PHI, The Bank of Nova Scotia, as Administrative Agent, and the lenders party thereto,
dated January 13, 2016 (File No. 001-31403, Form 8-K dated January 14, 2016, Exhibit 10)

Second Amended and Restated Credit Agreement, dated as of August 1, 2011, by and among Pepco Holdings, Inc., Potomac Electric
Power Company, Delmarva Power & Light Company and Atlantic City Electric Company, the lenders party thereto, Wells Fargo Bank,
National Association, as agent, issuer and swingline lender, Bank of America, N.A., as syndication agent and issuer, The Royal Bank of
Scotland plc and Citicorp USA, Inc., as co-documentation agents, Wells Fargo Securities, LLC and Merrill Lynch, Pierce, Fenner and Smith
Incorporated, as active joint lead arrangers and joint book runners, and Citigroup Global Markets Inc. and RBS Securities, Inc. as passive
joint lead arrangers and joint book runners (File No. 001-31403, Form 10-Q dated August 3, 2011, Exhibit 10.1)

10-82-1

First Amendment, dated as of August 2, 2012, to Second Amended and Restated Credit Agreement, dated as of August 1, 2011, by and
among Pepco Holdings, Inc., Potomac Electric Power Company, Delmarva Power & Light Company and Atlantic City Electric Company, the
various financial institutions party thereto, Wells Fargo Bank, National Association, as agent, issuer of letters of credit and swingline lender,
Bank of America, N.A., as syndication agent and issuer of letters of credit, and The Royal Bank of Scotland plc and Citibank, N.A., as co-
documentation agents (File No. 001-31403, Form 10-K dated March 1, 2013, Exhibit 10.25.1)

534

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

Description

10-82-2

10-82-3

10-82-4

10-83

10-83-1

10-83-2

10-84

10-85

10-86

10-87

10-88

10-89

10-90

Amendment and Consent to Second Amended and Restated Credit Agreement, dated as of May 20, 2014, by and among Pepco Holdings,
Inc., Potomac Electric Power Company, Delmarva Power & Light Company and Atlantic City Electric Company, the various financial
institutions from time to time party thereto, Bank of America, N.A. and Wells Fargo Bank, National Association (File No. 001-31403, Form 8-
K dated May 20, 2014, Exhibit 10.1)

Third Amendment to Second Amended and Restated Credit Agreement, dated as of May 1, 2015, by and among Pepco Holdings, Inc.,
Potomac Electric Power Company, Delmarva Power & Light Company and Atlantic City Electric Company, the various financial institutions
from time to time party thereto, Bank of America, N.A. and Wells Fargo Bank, National Association (File No. 001-31403, Form 8-K dated
May 1, 2015, Exhibit 10.1)

Consent, dated as of October 29, 2015, by and among Pepco Holdings, Inc., Potomac Electric Power Company, Delmarva Power & Light
Company and Atlantic City Electric Company, the various financial institutions from time to time party thereto, Bank of America, N.A. and
Wells Fargo Bank, National Association (File No. 001-31403, Form 8-K dated October 29, 2015, Exhibit 10.1)

Asset Purchase and Sale Agreement for Generating Plants and Related Assets, dated as of June 7, 2000, by and between Pepco and
Southern Energy, Inc. (File No. 001-01072, Form 8-K dated June 13, 2000, Exhibit 10)

Amendment No. 1 to the Asset Purchase and Sale Agreement for Generating Plants and Related Assets, dated September 18, 2000, by and
between Potomac Electric Power Company and Southern Energy, Inc. (File No. 001-01072, Form 8-K dated December 19, 2000, Exhibit
10.1)

Amendment No. 2 to the Asset Purchase and Sale Agreement for Generating Plants and Related Assets, dated December 19, 2000, by and
between Potomac Electric Power Company and Southern Energy, Inc. (File No. 001-01072, Form 8-K dated December 19, 2000, Exhibit
10.2)

First Amendment to Loan Agreement, by and between Pepco Holdings LLC and The Bank of Nova Scotia, as administrative agent and
lender, dated March 28, 2016 (File No. 001-31403, Form 8-K dated March 28, 2016, Exhibit 10)

Amendment No. 7 to Credit Agreement, dated as of March 23, 2011, among Exelon Corporation, as Borrower, the various financial
institutions named therein, as Lenders, and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 001-16169, Form 8-K dated May
27, 2016, Exhibit 99.1)

Amendment No. 7 to Credit Agreement, dated as of March 23, 2011, among Exelon Generation Company, LLC, as Borrower, the various
financial institutions named therein, as Lenders, and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 333-85496, Form 8-K
dated May 27, 2016, Exhibit 99.2)

Amendment No. 4 to Credit Agreement, dated as of March 23, 2011, among Commonwealth Edison Company, as Borrower, the various
financial institutions named therein, as Lenders, and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 333-85496, Form 8-K
dated May 27, 2016, Exhibit 99.3)

Amendment No. 6 to Credit Agreement, dated as of March 23, 2011, among PECO Energy Company, as Borrower, the various financial
institutions named therein, as Lenders, and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 000-16844, Form 8-K dated May
27, 2016, Exhibit 99.4)

Amendment No. 5 to Credit Agreement, dated as of March 23, 2011, among Baltimore Gas and Electric Company, as Borrower, the various
financial institutions named therein, as Lenders, and JPMorgan Chase Bank, N.A., as Administrative Agent (File No. 001-01910, Form 8-K
dated May 27, 2016, Exhibit 99.5)

Fourth Amendment to Second Amended and Restated Credit Agreement, dated as of August 1, 2011, among Pepco Holdings LLC,
Potomac Electric Power Company, Delmarva Power & Light Company and Atlantic City Electric Company, as Borrowers, the various
financial institutions named therein, as Lenders, and Wells Fargo Bank, National Association, as Administrative Agent (File No. 001-31403,
Form 8-K dated May 27, 2016, Exhibit 99.6)

10-91

2016 Form of Exelon Corporation Change in Control Agreement (File No. 001-16169, Form 10-Q dated October 26, 2016, Exhibit 10.1)

535

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.

Description

10-92

10-93

10-94

10-95

10-96

10-97

10-98

10-99

14

21-1

21-2

21-3

21-4

21-5

21-6

21-7

21-8

21-9

23-1

23-2

23-3

23-4

23-5

Execution Version-ZEC Standard Contract by and between the NYSERDA and Nine Mile Point Nuclear Station, LLC dated Nov. 18, 2016
(File No. 001-16169, Form 8-K dated November 18, 2016, Exhibit 10.1)

Execution Version-ZEC Standard Contract by and between the NYSERDA and R. E. Ginna Nuclear Power Plant, LLC dated Nov. 18, 2016
(File No. 001-16169, Form 8-K dated November 18, 2016, Exhibit 10.2)

Credit Agreement, dated as of November 28, 2017, as thereafter amended and conformed among ExGen Renewables IV, LLC, ExGen
Renewables IV Holding, LLC, Morgan Stanley Senior Funding, Inc. as administrative agent, Wilmington Trust, National Association, as
depository bank and collateral agent, and the lenders and other agents party thereto. (Certain portions of this exhibit have been omitted by
redacting a portion of text, as indicated by asterisks in the text. This exhibit has been filed separately with the U.S. Securities and Exchange
Commission pursuant to a request for confidential treatment.)

Form of Separation Agreement under Exelon Corporation Senior Management Severance Plan (As Amended and Restated Effective
November 1, 2015) (File No. 001-16169, Form 10-Q dated May 3, 2018, Exhibit 10.1)

Purchase Agreement, dated June 8, 2018 among Delmarva Power & Light Company and the purchasers signatory thereto (File No. 001-
01405, Form 8-K dated June 21, 2018, Exhibit 1.1)

Purchase Agreement, dated June 8, 2018, among Potomac Electric Power Company and the purchasers signatory thereto (File No. 001-
01072, Form 8-K dated June 21, 2018, Exhibit 1.1)

Letter Agreement, dated May 7, 2018, between Exelon Corporation and Denis P. O’Brien (File No. 001-16169, Form 10-Q dated August 2,
2018, Exhibit 10.3)

Letter Agreement, dated May 7, 2018, between Exelon Corporation and Jonathan W. Thayer (File No. 001-16169, Form 10-Q dated August
2, 2018, Exhibit 10.4)

Exelon Code of Conduct, as amended March 12, 2012 (File No. 1-16169, Form 8-K dated March 14, 2012, Exhibit No. 14-1).

Subsidiaries

Exelon Corporation

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

Pepco Holdings LLC

Potomac Electric Power Company

Delmarva Power & Light Company

Atlantic City Electric Company

Consent of Independent Registered Public Accountants

Exelon Corporation

Exelon Generation Company, LLC

Commonwealth Edison Company

PECO Energy Company

Baltimore Gas and Electric Company

536

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.
23-6

Description
Potomac Electric Power Company

23-7

23-8

24-1

24-2

24-3

24-4

24-5

24-6

24-7

24-8

24-9

24-10

24-11

24-12

24-13

24-14

24-15

24-16

24-17

24-18

24-19

24-20

24-21

24-22

24-23

24-24

24-25

24-26

24-27

Delmarva Power & Light Company

Atlantic City Electric Company

Power of Attorney (Exelon Corporation)

Anthony K. Anderson

Ann C. Berzin

Laurie Brlas

Christopher M. Crane

Yves C. de Balmann

Nicholas DeBenedictis

Linda P. Jojo

Paul Joskow

Robert J. Lawless

Richard W. Mies

John W. Rogers, Jr.

Mayo A. Shattuck III

Stephen D. Steinour

John F. Young

Power of Attorney (Commonwealth Edison Company)

James W. Compton

Christopher M. Crane

A. Steven Crown

Nicholas DeBenedictis

Joseph Dominguez

Peter V. Fazio, Jr.

Michael H. Moskow

Anne R. Pramaggiore

Reserved.

Reserved.

Power of Attorney (PECO Energy Company)

Christopher M. Crane

M. Walter D’Alessio

Nicholas DeBenedictis

537

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.
24-28

24-29

24-30

24-31

24-32

24-33

24-34

24-35

24-36

24-37

24-38

24-39

24-40

24-41

24-42

24-43

24-44

24-45

24-46

24-47

24-48

24-49

24-50

24-51

24-52

24-53

24-54

24-55

24-56

Description
Nelson A. Diaz

John S. Grady

Rosemarie B. Greco

Michael A. Innocenzo

Charisse R. Lillie

Anne R. Pramaggiore

Power of Attorney (Baltimore Gas and Electric Company)

Ann C. Berzin

Calvin G. Butler, Jr.

Christopher M. Crane

Michael E. Cryor

James R. Curtiss

Joseph Haskins, Jr.

Anne R. Pramaggiore

Michael D. Sullivan

Maria Harris Tildon

Power of Attorney (Pepco Holdings LLC)

Christopher M. Crane

Linda W. Cropp

Michael E. Cryor

Ernest Dianastasis

Debra P. DiLorenzo

Anne R. Pramaggiore

David M. Velazquez

Power of Attorney (Potomac Electric Power Company)

J. Tyler Anthony

Phillip S. Barnett

Christopher M. Crane

Melissa A. Lavinson

Kevin M. McGowan

Anne R. Pramaggiore

David M. Velazquez

Power of Attorney (Delmarva Power & Light Company)

24-57

Anne R. Pramaggiore

538

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.
24-58

Description
David M. Velazquez

Power of Attorney (Atlantic City Electric Company)

24-59

David M. Velazquez

Certifications Pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities and Exchange Act of 1934 as to the Annual Report on Form 10-K for the year ended
December 31, 2018 filed by the following officers for the following registrants:

Exhibit No.
31-1

Description
Filed by Christopher M. Crane for Exelon Corporation

31-2

31-3

31-4

31-5

31-6

31-7

31-8

31-9

31-10

31-11

31-12

31-13

31-14

31-15

31-16

31-17

31-18

Filed by Joseph Nigro for Exelon Corporation

Filed by Kenneth W. Cornew for Exelon Generation Company, LLC

Filed by Bryan P. Wright for Exelon Generation Company, LLC

Filed by Joseph Dominguez for Commonwealth Edison Company

Filed by Jeanne M. Jones for Commonwealth Edison Company

Filed by Michael A. Innocenzo for PECO Energy Company

Filed by Robert J. Stefani for PECO Energy Company

Filed by Calvin G. Butler, Jr. for Baltimore Gas and Electric Company

Filed by David M. Vahos for Baltimore Gas and Electric Company

Filed by David M. Velazquez for Pepco Holdings LLC

Filed by Phillip S. Barnett for Pepco Holdings LLC

Filed by David M. Velazquez for Potomac Electric Power Company

Filed by Phillip S. Barnett for Potomac Electric Power Company

Filed by David M. Velazquez for Delmarva Power & Light Company

Filed by Phillip S. Barnett for Delmarva Power & Light Company

Filed by David M. Velazquez for Atlantic City Electric Company

Filed by Phillip S. Barnett for Atlantic City Electric Company

Certifications Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code as to the Annual Report on Form 10-K for the year ended December 31,
2018 filed by the following officers for the following registrants:

Exhibit No.
32-1

Description
Filed by Christopher M. Crane for Exelon Corporation

32-2

32-3

32-4

32-5

32-6

32-7

32-8

Filed by Joseph Nigro for Exelon Corporation

Filed by Kenneth W. Cornew for Exelon Generation Company, LLC

Filed by Bryan P. Wright for Exelon Generation Company, LLC

Filed by Joseph Dominguez for Commonwealth Edison Company

Filed by Jeanne M. Jones for Commonwealth Edison Company

Filed by Michael A. Innocenzo for PECO Energy Company

Filed by Robert J. Stefani for PECO Energy Company

539

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit No.
32-9

Description
Filed by Calvin G. Butler, Jr. for Baltimore Gas and Electric Company

32-10

32-11

32-12

32-13

32-14

32-15

32-16

32-17

32-18

Filed by David M. Vahos for Baltimore Gas and Electric Company

Filed by David M. Velazquez for Pepco Holdings LLC

Filed by Phillip S. Barnett for Pepco Holdings LLC

Filed by David M. Velazquez for Potomac Electric Power Company

Filed by Phillip S. Barnett for Potomac Electric Power Company

Filed by David M. Velazquez for Delmarva Power & Light Company

Filed by Phillip S. Barnett for Delmarva Power & Light Company

Filed by David M. Velazquez for Atlantic City Electric Company

Filed by Phillip S. Barnett for Atlantic City Electric Company

101.INS

XBRL Instance

101.SCH

XBRL Taxonomy Extension Schema

101.CAL

XBRL Taxonomy Extension Calculation

101.DEF

XBRL Taxonomy Extension Definition

101.LAB

XBRL Taxonomy Extension Labels

101.PRE

XBRL Taxonomy Extension Presentation

__________
*
Compensatory plan or arrangements in which directors or officers of the applicable registrant participate and which are not available to all employees.
(a) These filings are not available electronically on the SEC website as they were filed in paper previous to the electronic system that is currently in place.

540

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

ITEM 16.

FORM 10-K SUMMARY

All Registrants

Registrants may voluntarily include a summary of information required by Form 10-K under this Item 16. The Registrants have elected not to include such
summary information.

541

Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

EXELON CORPORATION

By:

  /s/ CHRISTOPHER M. CRANE

Name:

  Christopher M. Crane

Title:

  President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

/s/ JOSEPH NIGRO

Joseph Nigro

/s/ FABIAN E. SOUZA

Fabian E. Souza

   President and Chief Executive Officer (Principal Executive Officer) and

Director

   Senior Executive Vice President and Chief Financial Officer (Principal

Financial Officer)

   Senior Vice President and Corporate Controller (Principal Accounting Officer)

This annual report has also been signed below by Thomas S. O'Neill, Attorney-in-Fact, on behalf of the following Directors on the date indicated:

  Anthony K. Anderson
Ann C. Berzin
Laurie Brlas
Christopher M. Crane
Yves C. de Balmann
Nicholas DeBenedictis
Linda P. Jojo

By:

Name:

/s/ THOMAS S. O'NEILL

Thomas S. O'Neill

Paul L. Joskow
Robert J. Lawless
Richard W. Mies
John W. Rogers, Jr.
Mayo A. Shattuck III
Stephen D. Steinour
John F. Young

542

February 8, 2019

 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
  
  
  
  
 
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

EXELON GENERATION COMPANY, LLC

By:

Name:

Title:

  /s/ KENNETH W. CORNEW

  Kenneth W. Cornew

  President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ KENNETH W. CORNEW

Kenneth W. Cornew

/s/ BRYAN P. WRIGHT

Bryan P. Wright

/s/ MATTHEW N. BAUER

Matthew N. Bauer

   President and Chief Executive Officer (Principal Executive Officer)

   Senior Vice President and Chief Financial Officer (Principal Financial Officer)

   Vice President and Controller (Principal Accounting Officer)

543

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

COMMONWEALTH EDISON COMPANY

By:

  /s/ JOSEPH DOMINGUEZ

Name:

  Joseph Dominguez

Title:

  Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ JOSEPH DOMINGUEZ

Joseph Dominguez

/s/ JEANNE M. JONES

Jeanne M. Jones

/s/ GERALD J. KOZEL

Gerald J. Kozel

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

   Chief Executive Officer (Principal Executive Officer) and Director

   Senior Vice President, Chief Financial Officer and Treasurer (Principal

Financial Officer)

   Vice President and Controller (Principal Accounting Officer)

  Chairman and Director

This annual report has also been signed below by Joseph Dominguez, Attorney-in-Fact, on behalf of the following Directors on the date indicated:

James W. Compton
Christopher M. Crane
A. Steven Crown
Nicholas DeBenedictis

Peter V. Fazio, Jr.
Michael H. Moskow
Anne R. Pramaggiore

By:

Name:

/s/ JOSEPH DOMINGUEZ

Joseph Dominguez

February 8, 2019

544

 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
 
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

PECO ENERGY COMPANY

By:

  /s/ MICHAEL A. INNOCENZO

Name:

  Michael A. Innocenzo

Title:

  President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ MICHAEL A. INNOCENZO

Michael A. Innocenzo

/s/ ROBERT J. STEFANI

Robert J. Stefani

/s/ SCOTT A. BAILEY

Scott A. Bailey

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

   President and Chief Executive Officer (Principal Executive Officer) and

Director

   Senior Vice President, Chief Financial Officer and Treasurer (Principal

Financial Officer)

   Vice President and Controller (Principal Accounting Officer)

  Chairman and Director

This annual report has also been signed below by Michael A. Innocenzo, Attorney-in-Fact, on behalf of the following Directors on the date indicated:

Christopher M. Crane

M. Walter D’Alessio

Nicholas DeBenedictis

Nelson A. Diaz

By:

Name:

/s/ MICHAEL A. INNOCENZO

   Michael A. Innocenzo

  John S. Grady

  Rosemarie B. Greco

   Charisse R. Lillie

   Anne R. Pramaggiore

545

February 8, 2019

 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
 
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

BALTIMORE GAS AND ELECTRIC COMPANY

By:

  /s/ CALVIN G. BUTLER, JR.

Name:

  Calvin G. Butler, Jr.

Title:

  Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ CALVIN G. BUTLER, JR.

Calvin G. Butler, Jr.

/s/ DAVID M. VAHOS

David M. Vahos

/s/ ANDREW W. HOLMES

Andrew W. Holmes

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

   Chief Executive Officer (Principal Executive Officer) and Director

   Senior Vice President, Chief Financial Officer and Treasurer (Principal

Financial Officer)

   Vice President and Controller (Principal Accounting Officer)

  Chairman and Director

This annual report has also been signed below by Calvin G. Butler, Jr., Attorney-in-Fact, on behalf of the following Directors on the date indicated:

Ann C. Berzin

Christopher M. Crane

Michael E. Cryor

James R. Curtiss

By:

Name:

/s/ CALVIN G. BUTLER, JR.

Calvin G. Butler, Jr.

   Joseph Haskins, Jr.

   Anne R. Pramaggiore

  Michael D. Sullivan

   Maria Harris Tildon

546

February 8, 2019

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
    
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

PEPCO HOLDINGS LLC

By:

  /s/ DAVID M. VELAZQUEZ

Name:

  David M. Velazquez

Title:

  President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

   President and Chief Executive Officer (Principal Executive Officer)

/s/ PHILLIP S. BARNETT

   Senior Vice President, Chief Financial Officer and Treasurer (Principal

Financial Officer)

Phillip S. Barnett

/s/ ROBERT M. AIKEN

Robert M. Aiken

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

   Vice President and Controller (Principal Accounting Officer)

   Chairman and Director

This annual report has also been signed below by David M. Velazquez, Attorney-in-Fact, on behalf of the following Directors on the date indicated:

Christopher M. Crane

Linda W. Cropp

Michael E. Cryor

By:

Name:

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

   Ernest Dianastasis

   Debra P. DiLorenzo

   Anne R. Pramaggiore

547

February 8, 2019

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

POTOMAC ELECTRIC POWER COMPANY

By:

  /s/ DAVID M. VELAZQUEZ

Name:

  David M. Velazquez

Title:

  President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

/s/ PHILLIP S. BARNETT

Phillip S. Barnett

/s/ ROBERT M. AIKEN

Robert M. Aiken

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

   President and Chief Executive Officer (Principal Executive Officer)

   Senior Vice President, Chief Financial Officer and Treasurer (Principal

Financial Officer) 

   Vice President and Controller (Principal Accounting Officer)

   Chairman

This annual report has also been signed below by David M. Velazquez, Attorney-in-Fact, on behalf of the following Directors on the date indicated:

J. Tyler Anthony

Phillip S. Barnett

Christopher M. Crane

By:

Name:

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

   Melissa A. Lavinson

   Kevin M. McGowan

   Anne R. Pramaggiore

548

February 8, 2019

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

DELMARVA POWER & LIGHT COMPANY

By:

  /s/ DAVID M. VELAZQUEZ

Name:

  David M. Velazquez

Title:

  President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

/s/ PHILLIP S. BARNETT

Phillip S. Barnett

/s/ ROBERT M. AIKEN

Robert M. Aiken

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

   President and Chief Executive Officer (Principal Executive Officer)

   Senior Vice President, Chief Financial Officer and Treasurer (Principal

Financial Officer) 

   Vice President and Controller (Principal Accounting Officer)

   Chairman

This annual report has also been signed below by David M. Velazquez, Attorney-in-Fact, on behalf of the following Directors on the date indicated:

Anne R. Pramaggiore

By:

Name:

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

February 8, 2019

549

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
  
  
  
 
Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Chicago and State of Illinois on the 8th day of February, 2019 .

ATLANTIC CITY ELECTRIC COMPANY

By:

  /s/ DAVID M. VELAZQUEZ

Name:

  David M. Velazquez

Title:

  President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the
capacities indicated on the 8th day of February, 2019 .

Signature

Title

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

/s/ PHILLIP S. BARNETT

Phillip S. Barnett

/s/ ROBERT M. AIKEN

Robert M. Aiken

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

   President and Chief Executive Officer (Principal Executive Officer)

   Senior Vice President, Chief Financial Officer and Treasurer (Principal

Financial Officer) 

   Vice President and Controller (Principal Accounting Officer)

   Chairman

550

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 21.1

Exelon Corporation (50% and Greater)
12/31/2018

Subsidiary

2014 ESA HoldCo, LLC

2014 ESA Project Company, LLC

2015 ESA Holdco, LLC

2015 ESA Investco, LLC

2015 ESA Project Company, LLC

A/C Fuels Company

Aerolab Enterprises, LLC

Albany Green Energy, LLC

AMP Funding, L.L.C.

Annova LNG Brownsville A, LLC

Annova LNG Brownsville B, LLC

Annova LNG Brownsville C, LLC

Annova LNG Common Infrastructure, LLC

Annova LNG, LLC

APS Constellation, LLC

Atlantic City Electric Company

Atlantic City Electric Transition Funding LLC

Atlantic Generation, Inc.

Atlantic Southern Properties, Inc.

ATNP Finance Company

AV Solar Ranch 1, LLC

Baltimore Gas and Electric Company

BC Energy LLC

Beebe 1B Renewable Energy, LLC

Beebe Renewable Energy, LLC

Bennett Creek Windfarm, LLC

Bethlehem Renewable Energy, LLC

BGE Home Products & Services, LLC

Big Top, LLC

Blue Breezes II, L.L.C.

Blue Breezes, L.L.C.

Blue Ridge Renewable Energy, LLC

Bluestem Wind Energy Holdings, LLC

Bluestem Wind Energy Member Holdings, LLC

Bluestem Wind Energy Member, LLC

Bluestem Wind Energy, LLC

Butter Creek Power, LLC

  Jurisdiction

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  Delaware

  Georgia

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  New Jersey

  Delaware

  New Jersey

  New Jersey

  Delaware

  Delaware

  Maryland

  Minnesota

  Delaware

  Delaware

  Idaho

  Delaware

  Delaware

  Oregon

  Minnesota

  Minnesota

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

1

   
 
   
Exhibit 21.1

California PV Energy 2, LLC

California PV Energy 3, LLC

California PV Energy, LLC

Calvert Cliffs Nuclear Power Plant, LLC

Cassia Gulch Wind Park LLC

Cassia Wind Farm LLC

CD Panther I, Inc.

CD Panther II, LLC

CD Panther Partners, L.P.

CD SEGS V, Inc.

CD SEGS VI, Inc.

CE Culm, Inc.

CE FundingCo, LLC

CE Nuclear, LLC

CER Generation, LLC

CEU Arkoma West, LLC

CEU CoLa, LLC

CEU East Fort Peck, LLC

CEU Fayetteville, LLC

CEU Floyd Shale, LLC

CEU Holdings, LLC

CEU Huntsville, LLC

CEU Kingston, LLC

CEU Niobrara, LLC

CEU Ohio Shale, LLC

CEU Paradigm, LLC

CEU Pinedale, LLC

CEU Plymouth, LLC

CEU Simplicity, LLC

CEU W&D, LLC

Chesapeake HVAC, Inc.

CII Solarpower I, Inc.

Clean Jobs for Pennsylvania, LLC

Clinton Battery Utility, LLC

CLT Energy Services Group, L.L.C.

CNE Gas Holdings, LLC

CNE Gas Supply, LLC

CNEG Holdings, LLC

CNEGH Holdings, LLC

CoLa Resources LLC

Colorado Bend II Power, LLC

  Delaware

  Delaware

  Delaware

  Maryland

Idaho

Idaho

  Maryland

  Delaware

  Delaware

  Maryland

  Maryland

   Maryland

   Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Maryland

  Delaware

  Delaware

  Pennsylvania

  Kentucky

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

2

 
 
Exhibit 21.1

Colorado Bend Services, LLC

ComEd Financing III

Commonwealth Edison Company

Commonwealth Edison Company of Indiana, Inc.

Conectiv Communications, Inc.

Conectiv Energy Supply, Inc.

Conectiv North East, LLC

Conectiv Properties and Investments, Inc.

Conectiv Solutions LLC

Conectiv, LLC

Constellation Connect, LLC

Constellation DCO Albany Power Holdings, LLC

Constellation EG, LLC

Constellation Energy Canada, Inc.

Constellation Energy Commodities Group Maine, LLC

Constellation Energy Gas Choice, LLC

Constellation Energy Nuclear Group, LLC

Constellation Energy Power Choice, LLC

Constellation Energy Resources, LLC

Constellation Energy Upstream Holdings, LLC

Constellation ESCO, LLC

Constellation Holdings, LLC

Constellation LNG, LLC

Constellation Mystic Power, LLC

Constellation NewEnergy - Gas Division, LLC

Constellation NewEnergy, Inc.

Constellation Nuclear Power Plants, LLC

Constellation Nuclear, LLC

Constellation Power Source Generation, LLC

Constellation Power, Inc.

Constellation Solar Arizona 2, LLC

Constellation Solar Arizona, LLC

Constellation Solar California, LLC

Constellation Solar Connecticut, LLC

Constellation Solar DC, LLC

Constellation Solar Federal, LLC

Constellation Solar Georgia 2, LLC

Constellation Solar Georgia, LLC

Constellation Solar Holding, LLC

Constellation Solar Horizons, LLC

Constellation Solar Illinois, LLC

3

  Delaware

  Delaware

  Illinois

  Indiana

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Ontario

  Delaware

  Delaware

  Maryland

  Delaware

  Delaware

  Delaware

  Delaware

  Maryland

  Delaware

  Delaware

  Kentucky

  Delaware

  Delaware

  Delaware

  Maryland

  Maryland

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Georgia

  Delaware

  Delaware

  Delaware

Exhibit 21.1

Constellation Solar Maryland II, LLC

Constellation Solar Maryland, LLC

Constellation Solar Massachusetts, LLC

Constellation Solar MC, LLC

Constellation Solar Net Metering, LLC

Constellation Solar New Jersey II, LLC

Constellation Solar New Jersey III, LLC

Constellation Solar New Jersey, LLC

Constellation Solar New York, LLC

Constellation Solar Ohio, LLC

Constellation Solar Rhode Island, LLC

Constellation Solar Texas, LLC

Constellation Solar, LLC

Continental Wind Holding, LLC

Continental Wind, LLC

COSI Central Wayne, Inc.

COSI Sunnyside, Inc.

Cow Branch Wind Power, L.L.C.

CP Sunnyside I, Inc.

CP Windfarm, LLC

CR Clearing, LLC

Criterion Power Partners, LLC

Data Center Enterprise, LLC

Delaware Operating Services Company, LLC

Delmarva Power & Light Company

Denver Airport Solar, LLC

Distributed Generation Partners, LLC

Distrigas of Massachusetts LLC

Eastern Landfill Gas, LLC

EdiSun, LLC

Energy Performance Services, Inc.

ETT Canada, Inc.

Everett LNG LLC

Ewington Energy Systems LLC

Exelon AVSR Holding, LLC

Exelon AVSR, LLC

Exelon Business Services Company, LLC

Exelon Energy Delivery Company, LLC

Exelon Enterprises Company, LLC

Exelon FitzPatrick, LLC

Exelon Framingham, LLC

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Maryland

  Maryland

  Missouri

  Maryland

  Minnesota

  Missouri

  Delaware

  Delaware

  Delaware

  Delaware & Virginia

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  New Brunswick

  Delaware

  Minnesota

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  Delaware

  Delaware

4

Exhibit 21.1

Exelon Fulton, LLC

Exelon Generation Acquisitions, LLC

Exelon Generation Company, LLC

Exelon Generation Consolidation, LLC

Exelon Generation Finance Company, LLC

Exelon Generation Limited

Exelon Genesis, LLC

Exelon InQB8R, LLC

Exelon Mechanical, LLC

Exelon Microgrid, LLC

Exelon New Boston, LLC

Exelon New England Holdings, LLC

Exelon Nuclear Partners, LLC

Exelon Nuclear Security, LLC

Exelon PowerLabs, LLC

Exelon Solar Chicago LLC

Exelon Transmission Company, LLC

Exelon VTI, LLC

Exelon West Medway II, LLC

Exelon West Medway, LLC

Exelon Wind 1, LLC

Exelon Wind 10, LLC

Exelon Wind 11, LLC

Exelon Wind 2, LLC

Exelon Wind 3, LLC

Exelon Wind 4, LLC

Exelon Wind 5, LLC

Exelon Wind 6, LLC

Exelon Wind 7, LLC

Exelon Wind 8, LLC

Exelon Wind 9, LLC

Exelon Wind Canada Inc.

Exelon Wind, LLC

Exelon Wyman, LLC

Exelorate Enterprises, LLC

Ex-FM, Inc.

Ex-FME, Inc.

ExGen Energy, S. de R.L. de C.V.

ExGen Handley Power, LLC

ExGen Renewables Holdings II, LLC

ExGen Renewables Holdings, LLC

  Delaware

  Delaware

  Pennsylvania

  Nevada

  Delaware

  United Kingdom

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Canada

  Delaware

  Delaware

  Delaware

  New York

  Delaware

  Mexico

  Delaware

  Delaware

  Delaware

5

Exhibit 21.1

ExGen Renewables I Holding, LLC

ExGen Renewables I, LLC

ExGen Renewables II, LLC

ExGen Renewables IV Holding, LLC

ExGen Renewables IV, LLC

ExGen Renewables Partners, LLC

ExGen Texas II Power Holdings, LLC

ExGen Texas II Power, LLC

ExGen Texas Power Services, LLC

ExGen Ventures International Holdings II Limited

ExGen Ventures International Holdings Limited

ExTel Corporation, LLC

EZEV Enterprise, LLC

F & M Holdings Company, L.L.C.

Fair Wind Power Partners, LLC

Fauquier Landfill Gas, L.L.C.

Four Corners Windfarm, LLC

Four Mile Canyon Windfarm, LLC

Fourmile Wind Energy, LLC

Friendly Skies, Inc.

Gateway Solar LLC

Grande Prairie Generation, Inc.

Greensburg Wind Farm, LLC

Handsome Lake Energy, LLC

Harvest II Windfarm, LLC

Harvest Windfarm, LLC

High Mesa Energy, LLC

High Plains Wind Power, LLC

Holyoke Solar, LLC

Hot Springs Windfarm, LLC

JBAB Solar I, LLC

JExel Nuclear Company

K & D Energy LLC

KC Energy LLC

KSS Turbines LLC

Lake Houston Power, LLC

Loess Hills Wind Farm, LLC

Marshall Wind 1, LLC

Marshall Wind 2, LLC

Marshall Wind 3, LLC

Marshall Wind 4, LLC

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  United Kingdom

  United Kingdom

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

  Oregon

  Maryland

  Virgin Islands, U.S.

  Delaware

  Alberta

  Delaware

  Maryland

  Delaware

  Michigan

  Idaho

  Texas

  Delaware

  Idaho

  Delaware

  Japan

  Minnesota

  Minnesota

  Minnesota

  Delaware

  Missouri

  Minnesota

  Minnesota

  Minnesota

  Minnesota

6

Marshall Wind 5, LLC

Marshall Wind 6, LLC

Michigan Wind 1, LLC

Michigan Wind 2, LLC

Michigan Wind 3, LLC

Millennium Account Services, LLC

Minergy LLC

Mohave Sunrise Solar I, LLC

Mountain Top Wind Power, LLC

Nine Mile Point Nuclear Station, LLC

North Shore District Energy, LLC

Exhibit 21.1

  Minnesota

  Minnesota

  Delaware

  Delaware

  Delaware

  Delaware

  Wisconsin

  Arizona

  Maryland

  Delaware

  Delaware

Northwind Thermal Technologies Canada Inc.

  New Brunswick

Oregon Trail Windfarm, LLC

Outback Solar, LLC

Pacific Canyon Windfarm, LLC

Panther Creek Holdings, Inc.

Panther Creek Partners

PCI - BT Investing, L.L.C.

PCI Air Management Corporation

PCI Air Management Partners, L.L.C.

PCI Engine Trading Ltd.

PEC Financial Services, LLC

PECO Energy Capital Corp.

PECO Energy Capital Trust III

PECO Energy Capital Trust IV

PECO Energy Capital, L.P.

PECO Energy Company

PECO Wireless, LLC

Pegasus Power Company, Inc.

Pepco Building Services Inc.

Pepco Energy Cogeneration LLC

Pepco Energy Solutions LLC

Pepco Government Services LLC

Pepco Holdings LLC

PFMG Contruction, Ltd.

PFMG Solar Baldwin Park, LLC

PFMG Solar Etiwanda Falcon, LLC

PFMG Solar Long Beach, LLC

PFMG Solar PUSD, LLC

PFMG Solar San Diego, LLC

PFMG Solar, LLC

  Oregon

  Oregon

  Oregon

  Delaware

  Delaware

  Delaware

  Nevada

  Delaware

  Bermuda

  Pennsylvania

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  Delaware

  California

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  California

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

7

PH Holdco LLC

PHI Service Company

Pinedale Energy, LLC

POM Holdings, Inc.

Potomac Capital Investment Corporation

Potomac Delaware Leasing Corporation

Potomac Electric Power Company

Potomac Leasing Associates, L.P.

Potomac Power Resources, LLC

Prairie Wind Power LLC

R.E. Ginna Nuclear Power Plant, LLC

Ramp Investments, L.L.C.

Renewable Power Generation Holdings, LLC

Renewable Power Generation, LLC

RF HoldCo LLC

RITELine Illinois, LLC

RITELine Transmission Development, LLC

Rolling Hills Landfill Gas, LLC

Sacramento PV Energy, LLC

Sand Ranch Windfarm, LLC

Scherer Holdings 1, LLC

Scherer Holdings 2, LLC

Scherer Holdings 3, LLC

Sendero Wind Energy, LLC

Series A of Annova LNG, LLC

Series B of Annova LNG, LLC

Series C of Annova LNG, LLC

Series Z of Annova LNG, LLC

Shooting Star Wind Project, LLC

Sky Valley, LLC

SolGen Holding, LLC

SolGen, LLC

Sugar Beet Wind, LLC

Sunnyside II, Inc.

Sunnyside II, L.P.

Sunnyside III, Inc.

Threemile Canyon Wind I, LLC

Titan STC, LLC

Tuana Springs Energy, LLC

UII, LLC

Vineland Cogeneration Limited Partnership

Exhibit 21.1

  Delaware

  Delaware

  Colorado

  Delaware

  Delaware

  Delaware

  District of Columbia & Virginia

  Delaware

  Delaware

  Minnesota

  Maryland

  Delaware

  Delaware

  Delaware

  Delaware

  Illinois

  Delaware

  Delaware

  Delaware

  Oregon

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

  Delaware

  Idaho

  Illinois

  Delaware

8

Exhibit 21.1

Vineland General, Inc.

Vineland Ltd., Inc.

Volta SPV CMX, LLC

W&D Gas Partners, LLC

Wagon Trail, LLC

Wansley Holdings 1, LLC

Wansley Holdings 2, LLC

Ward Butte Windfarm, LLC

Water & Energy Savings Company, LLC

Western Path Development, LLC

Whitetail Wind Energy, LLC

Wildcat Finance, LLC

Wildcat Wind LLC

Wind Capital Holdings, LLC

Wolf Hollow II Power, LLC

Wolf Hollow Services, LLC

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

  Delaware

  Delaware

  Oregon

  Delaware

  Delaware

  Delaware

  Delaware

  New Mexico

  Missouri

  Delaware

  Delaware

9

 
   
Exhibit 21.2

Exelon Generation Company, LLC (50% and Greater)
12/31/2018

Subsidiary

2014 ESA HoldCo, LLC

2014 ESA Project Company, LLC

2015 ESA Holdco, LLC

2015 ESA Investco, LLC

2015 ESA Project Company, LLC

A/C Fuels Company

Albany Green Energy, LLC

Annova LNG Brownsville A, LLC

Annova LNG Brownsville B, LLC

Annova LNG Brownsville C, LLC

Annova LNG Common Infrastructure, LLC

Annova LNG, LLC

APS Constellation, LLC

Atlantic Generation, Inc.

AV Solar Ranch 1, LLC

BC Energy LLC

Beebe 1B Renewable Energy, LLC

Beebe Renewable Energy, LLC

Bennett Creek Windfarm, LLC

Bethlehem Renewable Energy, LLC

BGE Home Products & Services, LLC

Big Top, LLC

Blue Breezes II, L.L.C.

Blue Breezes, L.L.C.

Blue Ridge Renewable Energy, LLC

Bluestem Wind Energy Holdings, LLC

Bluestem Wind Energy Member Holdings, LLC

Bluestem Wind Energy Member, LLC

Bluestem Wind Energy, LLC

Butter Creek Power, LLC

California PV Energy 2, LLC

California PV Energy 3, LLC

California PV Energy, LLC

Calvert Cliffs Nuclear Power Plant, LLC

Cassia Gulch Wind Park LLC

Cassia Wind Farm LLC

CD Panther I, Inc.

CD Panther II, LLC

1

  Jurisdiction

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  Georgia

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  New Jersey

  Delaware

  Minnesota

  Delaware

  Delaware

  Idaho

  Delaware

  Delaware

  Oregon

  Minnesota

  Minnesota

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

  Delaware

  Delaware

  Delaware

  Maryland

  Idaho

  Idaho

  Maryland

  Delaware

   
 
   
Exhibit 21.2

CD Panther Partners, L.P.

CD SEGS V, Inc.

CD SEGS VI, Inc.

CE Culm, Inc.

CE FundingCo, LLC

CE Nuclear, LLC

CER Generation, LLC

CEU Arkoma West, LLC

CEU CoLa, LLC

CEU East Fort Peck, LLC

CEU Fayetteville, LLC

CEU Floyd Shale, LLC

CEU Holdings, LLC

CEU Huntsville, LLC

CEU Kingston, LLC

CEU Niobrara, LLC

CEU Ohio Shale, LLC

CEU Paradigm, LLC

CEU Pinedale, LLC

CEU Plymouth, LLC

CEU Simplicity, LLC

CEU W&D, LLC

Chesapeake HVAC, Inc.

CII Solarpower I, Inc.

Clinton Battery Utility, LLC

CLT Energy Services Group, L.L.C.

CNE Gas Holdings, LLC

CNE Gas Supply, LLC

CNEG Holdings, LLC

CNEGH Holdings, LLC

CoLa Resources LLC

Colorado Bend II Power, LLC

Colorado Bend Services, LLC

Conectiv Energy Supply, Inc.

Conectiv North East, LLC

Conectiv, LLC

Constellation Connect, LLC

Constellation DCO Albany Power Holdings, LLC

Constellation EG, LLC

Constellation Energy Canada, Inc.

Constellation Energy Commodities Group Maine, LLC

2

  Delaware

  Maryland

  Maryland

  Maryland

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Maryland

  Delaware

  Pennsylvania

  Kentucky

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Ontario

  Delaware

Exhibit 21.2

Constellation Energy Gas Choice, LLC

Constellation Energy Nuclear Group, LLC

Constellation Energy Power Choice, LLC

Constellation Energy Resources, LLC

Constellation Energy Upstream Holdings, LLC

Constellation ESCO, LLC

Constellation Holdings, LLC

Constellation LNG, LLC

Constellation Mystic Power, LLC

Constellation NewEnergy - Gas Division, LLC

Constellation NewEnergy, Inc.

Constellation Nuclear Power Plants, LLC

Constellation Nuclear, LLC

Constellation Power Source Generation, LLC

Constellation Power, Inc.

Constellation Solar Arizona 2, LLC

Constellation Solar Arizona, LLC

Constellation Solar California, LLC

Constellation Solar Connecticut, LLC

Constellation Solar DC, LLC

Constellation Solar Federal, LLC

Constellation Solar Georgia 2, LLC

Constellation Solar Georgia, LLC

Constellation Solar Holding, LLC

Constellation Solar Horizons, LLC

Constellation Solar Illinois, LLC

Constellation Solar Maryland II, LLC

Constellation Solar Maryland, LLC

Constellation Solar Massachusetts, LLC

Constellation Solar MC, LLC

Constellation Solar Net Metering, LLC

Constellation Solar New Jersey II, LLC

Constellation Solar New Jersey III, LLC

Constellation Solar New Jersey, LLC

Constellation Solar New York, LLC

Constellation Solar Ohio, LLC

Constellation Solar Rhode Island, LLC

Constellation Solar Texas, LLC

Constellation Solar, LLC

Continental Wind Holding, LLC

Continental Wind, LLC

  Delaware

  Maryland

  Delaware

  Delaware

  Delaware

  Delaware

  Maryland

  Delaware

  Delaware

  Kentucky

  Delaware

  Delaware

  Delaware

  Maryland

  Maryland

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Georgia

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

3

Exhibit 21.2

COSI Central Wayne, Inc.

COSI Sunnyside, Inc.

Cow Branch Wind Power, L.L.C.

CP Sunnyside I, Inc.

CP Windfarm, LLC

CR Clearing, LLC

Criterion Power Partners, LLC

Delaware Operating Services Company, LLC

Denver Airport Solar, LLC

Distributed Generation Partners, LLC

Distrigas of Massachusetts LLC

Eastern Landfill Gas, LLC

Energy Performance Services, Inc.

Everett LNG LLC

Ewington Energy Systems LLC

Exelon AVSR Holding, LLC

Exelon AVSR, LLC

Exelon FitzPatrick, LLC

Exelon Framingham, LLC

Exelon Fulton, LLC

Exelon Generation Acquisitions, LLC

Exelon Generation Consolidation, LLC

Exelon Generation Finance Company, LLC

Exelon Generation Limited

Exelon New Boston, LLC

Exelon New England Holdings, LLC

Exelon Nuclear Partners, LLC

Exelon Nuclear Security, LLC

Exelon PowerLabs, LLC

Exelon Solar Chicago LLC

Exelon West Medway II, LLC

Exelon West Medway, LLC

Exelon Wind 1, LLC

Exelon Wind 10, LLC

Exelon Wind 11, LLC

Exelon Wind 2, LLC

Exelon Wind 3, LLC

Exelon Wind 4, LLC

Exelon Wind 5, LLC

Exelon Wind 6, LLC

Exelon Wind 7, LLC

  Maryland

  Maryland

  Missouri

  Maryland

  Minnesota

  Missouri

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  Delaware

  Minnesota

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Nevada

  Delaware

  United Kingdom

  Delaware

  Delaware

  Delaware

  Delaware

  Pennsylvania

  Delaware

  Delaware

  Delaware

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

  Texas

4

Exelon Wind 8, LLC

Exelon Wind 9, LLC

Exelon Wind Canada Inc.

Exelon Wind, LLC

Exelon Wyman, LLC

ExGen Energy, S. de R.L. de C.V.

ExGen Handley Power, LLC

ExGen Renewables Holdings II, LLC

ExGen Renewables Holdings, LLC

ExGen Renewables I Holding, LLC

ExGen Renewables I, LLC

ExGen Renewables II, LLC

ExGen Renewables IV Holding, LLC

ExGen Renewables IV, LLC

ExGen Renewables Partners, LLC

ExGen Texas II Power Holdings, LLC

ExGen Texas II Power, LLC

ExGen Texas Power Services, LLC

Exhibit 21.2

  Texas

  Texas

  Canada

  Delaware

  Delaware

  Mexico

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

ExGen Ventures International Holdings II Limited

ExGen Ventures International Holdings Limited

  United Kingdom

  United Kingdom

Fair Wind Power Partners, LLC

Fauquier Landfill Gas, L.L.C.

Four Corners Windfarm, LLC

Four Mile Canyon Windfarm, LLC

Fourmile Wind Energy, LLC

Gateway Solar LLC

Grande Prairie Generation, Inc.

Greensburg Wind Farm, LLC

Handsome Lake Energy, LLC

Harvest II Windfarm, LLC

Harvest Windfarm, LLC

High Mesa Energy, LLC

High Plains Wind Power, LLC

Holyoke Solar, LLC

Hot Springs Windfarm, LLC

JBAB Solar I, LLC

JExel Nuclear Company

K & D Energy LLC

KC Energy LLC

KSS Turbines LLC

Lake Houston Power, LLC

  Delaware

  Delaware

  Oregon

  Oregon

  Maryland

  Delaware

  Alberta

  Delaware

  Maryland

  Delaware

  Michigan

  Idaho

  Texas

  Delaware

  Idaho

  Delaware

  Japan

  Minnesota

  Minnesota

  Minnesota

  Delaware

5

Exhibit 21.2

Loess Hills Wind Farm, LLC

Marshall Wind 1, LLC

Marshall Wind 2, LLC

Marshall Wind 3, LLC

Marshall Wind 4, LLC

Marshall Wind 5, LLC

Marshall Wind 6, LLC

Michigan Wind 1, LLC

Michigan Wind 2, LLC

Michigan Wind 3, LLC

Minergy LLC

Mohave Sunrise Solar I, LLC

Mountain Top Wind Power, LLC

Nine Mile Point Nuclear Station, LLC

North Shore District Energy, LLC

Oregon Trail Windfarm, LLC

Outback Solar, LLC

Pacific Canyon Windfarm, LLC

Panther Creek Holdings, Inc.

Panther Creek Partners

Pegasus Power Company, Inc.

Pepco Building Services Inc.

Pepco Energy Cogeneration LLC

Pepco Energy Solutions LLC

Pepco Government Services LLC

PFMG Construction, Ltd.

PFMG Solar Baldwin Park, LLC

PFMG Solar Etiwanda Falcon, LLC

PFMG Solar Long Beach, LLC

PFMG Solar PUSD, LLC

PFMG Solar San Diego, LLC

PFMG Solar, LLC

Pinedale Energy, LLC

Potomac Power Resources, LLC

Prairie Wind Power LLC

R.E. Ginna Nuclear Power Plant, LLC

Renewable Power Generation Holdings, LLC

Renewable Power Generation, LLC

Rolling Hills Landfill Gas, LLC

Sacramento PV Energy, LLC

Sand Ranch Windfarm, LLC

6

  Missouri

  Minnesota

  Minnesota

  Minnesota

  Minnesota

  Minnesota

  Minnesota

  Delaware

  Delaware

  Delaware

  Wisconsin

  Arizona

  Maryland

  Delaware

  Delaware

  Oregon

  Oregon

  Oregon

  Delaware

  Delaware

  California

  Delaware

  Delaware

  Delaware

  Delaware

  California

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Colorado

  Delaware

  Minnesota

  Maryland

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

Exhibit 21.2

Sendero Wind Energy, LLC

Series A of Annova LNG, LLC

Series B of Annova LNG, LLC

Series C of Annova LNG, LLC

Series Z of Annova LNG, LLC

Shooting Star Wind Project, LLC

Sky Valley, LLC

SolGen Holding, LLC

SolGen, LLC

Sugar Beet Wind, LLC

Sunnyside II, Inc.

Sunnyside II, L.P.

Sunnyside III, Inc.

Threemile Canyon Wind I, LLC

Titan STC, LLC

Tuana Springs Energy, LLC

Vineland Cogeneration Limited Partnership

Vineland General, Inc.

Vineland Ltd., Inc.

W&D Gas Partners, LLC

Wagon Trail, LLC

Ward Butte Windfarm, LLC

Water & Energy Savings Company, LLC

Whitetail Wind Energy, LLC

Wildcat Finance, LLC

Wildcat Wind LLC

Wind Capital Holdings, LLC

Wolf Hollow II Power, LLC

Wolf Hollow Services, LLC

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

  Delaware

  Idaho

  Delaware

  Delaware

  Delaware

  Delaware

  Oregon

  Oregon

  Delaware

  Delaware

  Delaware

  New Mexico

  Missouri

  Delaware

  Delaware

7

 
   
Exhibit 21.3

Commonwealth Edison Company (50% and Greater)
12/31/2018

Subsidiary

Commonwealth Edison Company of Indiana, Inc.

ComEd Financing III

EdiSun, LLC

RITELine Illinois, LLC

  Jurisdiction

   Indiana

   Delaware

   Delaware

   Illinois

 
 
 
 
 
PECO Energy Company (50% and Greater)
12/31/2018

Subsidiary

ATNP Finance Company

ExTel Corporation, LLC

PEC Financial Services, LLC

PECO Energy Capital Corp.

PECO Energy Capital, L.P.

PECO Energy Capital Trust III

PECO Energy Capital Trust IV

PECO Wireless, LLC

Exhibit 21.4

  Jurisdiction

  Delaware

  Delaware

  Pennsylvania

  Delaware

  Delaware

  Delaware

  Delaware

  Delaware

   
 
   
Baltimore Gas and Electric Company (50% and Greater)
12/31/2018

Subsidiary

None

  Jurisdiction

Exhibit 21.5

   
 
   
   
 
   
Pepco Holdings LLC (50% and Greater)
12/31/2018

Subsidiary

Atlantic City Electric Company

Atlantic City Electric Transition Funding LLC

Delmarva Power & Light Company

Millennium Account Services, LLC

PHI Service Company

Potomac Electric Power Company

POM Holdings, Inc.

Exhibit 21.6

  Jurisdiction

  New Jersey

  Delaware

  Delaware & Virginia

  Delaware

  Delaware

  District of Columbia & Virginia

  Delaware

   
 
   
Potomac Electric Power Company (50% and Greater)
12/31/2018

Subsidiary

POM Holdings, Inc.

  Jurisdiction

  Delaware

Exhibit 21.7

   
 
   
 
   
Delmarva Power & Light Company
12/31/2018

Subsidiary

N/A

Exhibit 21.8

  Jurisdiction

   
 
   
   
 
   
Atlantic City Electric Company (50% and Greater)
12/31/2018

Subsidiary

Atlantic City Electric Transition Funding LLC

  Jurisdiction

  New Jersey

Exhibit 21.9

   
 
   
 
   
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-213383 and No. 333-222989), Form S-4
(No. 333-209209) and on Form S-8 (No. 333-219037, No. 333-215114, No.333-189849, No.333-175162, No.333-127377, No.333-37082, No.333-
49780  and  No.  333-61390)  of  Exelon  Corporation  of  our  report  dated  February  8,  2019  relating  to  the  financial  statements,  financial  statement
schedules and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

Exhibit 23.1

/s/ PricewaterhouseCoopers LLP

Chicago, Illinois

February 8, 2019

 
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We  hereby  consent  to  the  incorporation  by  reference  in  the  Registration  Statements  on  Form  S-3  (No.  333-213383-06)  and  Form  S-4  (No.  333-
184712) of Exelon Generation Company, LLC of our report dated February 8, 2019 relating to the financial statements, financial statement schedule
and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

Exhibit 23.2

/s/ PricewaterhouseCoopers LLP

Baltimore, Maryland

February 8, 2019

 
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We  hereby  consent  to  the  incorporation  by  reference  in  the  Registration  Statement  on  Form  S-3  (No.  333-213383-05)  of  Commonwealth  Edison
Company of our report  dated February 8, 2019 relating  to the financial  statements,  financial  statement  schedule and the effectiveness  of internal
control over financial reporting, which appears in this Form 10-K.

Exhibit 23.3

/s/ PricewaterhouseCoopers LLP

Chicago, Illinois

February 8, 2019

 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 333-213383-04) of PECO Energy Company of
our  report  dated  February  8,  2019  relating  to  the  financial  statements,  financial  statement  schedule  and  the  effectiveness  of  internal  control  over
financial reporting, which appears in this Form 10-K.

Exhibit 23.4

/s/ PricewaterhouseCoopers LLP

Philadelphia, Pennsylvania

February 8, 2019

 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 333-213383-03) of Baltimore Gas and Electric
Company of our report  dated February 8, 2019 relating  to the financial  statements,  financial  statement  schedule and the effectiveness  of internal
control over financial reporting, which appears in this Form 10-K.

Exhibit 23.5

/s/ PricewaterhouseCoopers LLP

Baltimore, Maryland

February 8, 2019

 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 333-213383-02) of Potomac Electric Power
Company  of  our  report  dated  February  8,  2019  ,  relating  to  the  financial  statements  and  financial  statement  schedule,  which  appears  in  this
Form 10-K.

Exhibit 23.6

/s/ PricewaterhouseCoopers LLP

Washington, DC

February 8, 2019

 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 333-213383-01) of Delmarva Power & Light
Company  of  our  report  dated  February  8,  2019  ,  relating  to  the  financial  statements  and  financial  statement  schedule,  which  appears  in  this
Form 10-K.

Exhibit 23.7

/s/ PricewaterhouseCoopers LLP

Washington, DC

February 8, 2019

 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We  hereby  consent  to  the  incorporation  by  reference  in  the  Registration  Statement  on  Form  S-3  (No.  333-213383-07)  of  Atlantic  City  Electric
Company  of  our  report  dated  February  8,  2019  ,  relating  to  the  financial  statements  and  financial  statement  schedule,  which  appears  in  this
Form 10-K.

Exhibit 23.8

/s/ PricewaterhouseCoopers LLP

Washington, DC

February 8, 2019

 
KNOW ALL MEN BY THESE PRESENTS  that I,  Anthony K. Anderson , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

POWER OF ATTORNEY

Exhibit 24.1

/s/ ANTHONY K. ANDERSON

Anthony K. Anderson

DATE: February 5, 2019

    
 
 
 
POWER OF ATTORNEY

Exhibit 24.2

KNOW ALL MEN BY THESE PRESENTS  that I,  Ann C. Berzin, do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation, together
with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ ANN C. BERZIN

Ann C. Berzin

DATE: February 5, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.3

KNOW ALL MEN BY THESE PRESENTS  that I,  Laurie Brlas , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them, attorney for
me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation, together
with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ LAURIE BRLAS

Laurie Brlas

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.4

KNOW ALL MEN BY THESE PRESENTS  that I,  Christopher M. Crane , do hereby appoint Thomas S. O'Neill attorney for me and in my name and on my
behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation, together with any amendments thereto, to
be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the premises as fully and effectually
in all respects as I could do if personally present.

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

DATE: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.5

KNOW ALL MEN BY THESE PRESENTS  that I,  Yves C. de Balmann , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ YVES C. DE BALMANN

Yves C. de Balmann

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.6

KNOW ALL MEN BY THESE PRESENTS  that I,  Nicholas DeBenedictis , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ NICHOLAS DEBENEDICTIS

Nicholas DeBenedictis

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.7

KNOW ALL MEN BY THESE PRESENTS  that I,  Linda P. Jojo , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them, attorney for
me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation, together
with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ LINDA P. JOJO

Linda P. Jojo

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.8

KNOW ALL MEN BY THESE PRESENTS  that I,  Paul Joskow , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them, attorney for
me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation, together
with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ PAUL L. JOSKOW

Paul L. Joskow

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.9

KNOW  ALL  MEN  BY  THESE  PRESENTS    that  I,    Robert  J.  Lawless  ,  do  hereby  appoint  Christopher  M.  Crane  and  Thomas  S.  O'Neill,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ROBERT J. LAWLESS

Robert J. Lawless

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.10

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,    Richard  W.  Mies  ,  do  hereby  appoint  Christopher  M.  Crane  and  Thomas  S.  O'Neill,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ RICHARD W. MIES

Richard W. Mies

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.11

KNOW ALL MEN BY THESE PRESENTS  that I,   John W. Rogers, Jr. , do hereby appoint Christopher M. Crane and Thomas S. O'Neill or either of them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ JOHN W. ROGERS, JR.

John W. Rogers, Jr.

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.12

KNOW ALL MEN BY THESE PRESENTS  that I,  Mayo A. Shattuck III , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ MAYO A. SHATTUCK III

Mayo A. Shattuck III

DATE: February 5, 2019

 
 
KNOW ALL MEN BY THESE PRESENTS  that I,   Stephen D. Steinour , do hereby appoint Christopher M. Crane and Thomas S. O'Neill, or either of them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

POWER OF ATTORNEY

Exhibit 24.13

/s/ STEPHEN D. STEINOUR

Stephen D. Steinour

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.14

KNOW ALL MEN BY THESE PRESENTS  that I,  John F. Young , do hereby appoint Christopher M. Crane and Thomas O'Neill, or either of them, attorney for
me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Exelon Corporation, together
with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ JOHN F. YOUNG

John F. Young

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.15

KNOW ALL MEN BY THESE PRESENTS  that I,  James W. Compton , do hereby appoint Joseph Dominguez and Verónica Gómez, or either of them, attorney
for  me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of Commonwealth Edison
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ JAMES W. COMPTON

James W. Compton

DATE: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.16

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,    Christopher  M.  Crane  ,  do  hereby  appoint  Joseph  Dominguez  and  Verónica  Gómez,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Commonwealth
Edison Company, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.17

KNOW ALL MEN BY THESE PRESENTS  that I,  A. Steven Crown , do hereby appoint Joseph Dominguez and Verónica Gómez, or either of them, attorney
for  me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of Commonwealth Edison
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ A. STEVEN CROWN

A. Steven Crown

DATE: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.18

KNOW ALL MEN  BY THESE  PRESENTS   that I,  Nicholas DeBenedictis  , do  hereby  appoint  Joseph  Dominguez  and  Verónica  Gómez,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Commonwealth
Edison Company, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ NICHOLAS DEBENEDICTIS

Nicholas DeBenedictis

DATE: February 5, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.19

KNOW ALL MEN BY THESE PRESENTS  that I,  Joseph Dominguez , do hereby appoint Verónica Gómez attorney for me and in my name and on my
behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  Commonwealth  Edison  Company,  together  with  any
amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ JOSEPH DOMINGUEZ

Joseph Dominguez

DATE: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.20

KNOW ALL MEN BY THESE PRESENTS  that I,  Peter V. Fazio, Jr. , do hereby appoint Joseph Dominguez and Verónica Gómez, or either of them, attorney
for  me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of Commonwealth Edison
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ PETER V. FAZIO, JR.

Peter V. Fazio, Jr.

DATE: February 7, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.21

KNOW ALL MEN BY THESE PRESENTS  that I,  Michael H. Moskow , do hereby appoint Joseph Dominguez and Verónica Gómez, or either of them, attorney
for  me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of Commonwealth Edison
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ MICHAEL H. MOSKOW

Michael H. Moskow

DATE: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.22

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,   Anne  R.  Pramaggiore  ,  do  hereby  appoint  Joseph  Dominguez  and  Verónica  Gómez,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Commonwealth
Edison Company, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ANNE R. PRAMAGGIORE

Anne R. Pramaggiore

DATE: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.25

KNOW ALL MEN BY THESE PRESENTS  that I,  Christopher M. Crane , do hereby appoint Michael A. Innocenzo and Romulo L. Diaz, Jr., or either of them,
attorney  for  me  and  in my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of PECO Energy
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.26

KNOW ALL MEN BY THESE PRESENTS  that I,  M. Walter D’Alessio , do hereby appoint Michael A. Innocenzo and Romulo L. Diaz, Jr., or either of them,
attorney  for  me  and  in my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of PECO Energy
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ M. WALTER D’ALESSIO

M. Walter D’Alessio

DATE: February 4, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.27

KNOW ALL MEN BY THESE PRESENTS  that I,  Nicholas DeBenedictis , do hereby appoint Michael A. Innocenzo and Romulo L. Diaz, Jr., or either of them,
attorney  for  me  and  in my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of PECO Energy
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ NICHOLAS DEBENEDICTIS

Nicholas DeBenedictis

DATE: February 5, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.28

KNOW ALL MEN BY THESE PRESENTS  that I,  Nelson A. Diaz , do hereby appoint Michael A. Innocenzo and Romulo L. Diaz, Jr., or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of PECO Energy Company,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ NELSON A. DIAZ

Nelson A. Diaz

DATE: February 4, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.29

KNOW ALL MEN BY THESE PRESENTS  that I,  John S. Grady , do hereby appoint Michael A. Innocenzo and Romulo L. Diaz, Jr., or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of PECO Energy Company,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ JOHN S. GRADY

John S. Grady

DATE: February 4, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.30

KNOW ALL MEN BY THESE PRESENTS  that I,  Rosemarie B. Greco , do hereby appoint Michael A. Innocenzo and Romulo L. Diaz, Jr., or either of them,
attorney  for  me  and  in my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of PECO Energy
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ROSEMARIE B. GRECO

Rosemarie B. Greco

DATE: February 1, 2019

 
 
 
KNOW ALL MEN BY THESE PRESENTS  that I,  Michael A. Innocenzo , do hereby appoint Romulo L. Diaz, Jr. attorney for me and in my name and on my
behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  PECO  Energy  Company,  together  with  any  amendments
thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the premises as fully and
effectually in all respects as I could do if personally present.

POWER OF ATTORNEY

Exhibit 24.31

/s/ MICHAEL A. INNOCENZO

Michael A. Innocenzo

DATE: February 5, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.32

KNOW ALL  MEN BY THESE  PRESENTS  that  I,    Charisse R. Lillie ,  do  hereby  appoint  Michael  A.  Innocenzo  and  Romulo  L.  Diaz,  Jr.,  or  either  of  them,
attorney  for  me  and  in my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of PECO Energy
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ CHARISSE R. LILLIE

Charisse R. Lillie

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.33

KNOW ALL MEN BY THESE PRESENTS  that I,  Anne R. Pramaggiore , do hereby appoint Michael A. Innocenzo and Romulo L. Diaz, Jr., or either of them,
attorney  for  me  and  in my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of PECO Energy
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ANNE R. PRAMAGGIORE

Anne. R. Pramaggiore

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.34

KNOW ALL MEN BY THESE PRESENTS  that I,  Ann C. Berzin , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, attorney for me
and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Baltimore Gas & Electric Company,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ANN C. BERZIN

Ann C. Berzin

DATE: February 7, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.35

KNOW ALL MEN BY THESE PRESENTS  that I,  Calvin G. Butler, Jr.,  do hereby appoint John D. Corse attorney for me and in my name and on my behalf to
sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  Baltimore  Gas  &  Electric  Company,  together  with  any  amendments
thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the premises as fully and
effectually in all respects as I could do if personally present.

/s/ CALVIN G. BUTLER, JR.

Calvin G. Butler, Jr.

DATE: February 5, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.36

KNOW ALL MEN BY THESE PRESENTS  that I,  Christopher M. Crane , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Baltimore Gas & Electric
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.37

KNOW ALL MEN BY THESE PRESENTS  that I,  Michael E. Cryor , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, attorney for
me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  Baltimore  Gas  &  Electric
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ MICHAEL E. CRYOR

Michael E. Cryor

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.38

KNOW ALL MEN BY THESE PRESENTS  that I,  James R. Curtiss , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, for me and
in my name and on my behalf to sign the annual Securities and Exchange Commission report  on Form 10-K for 2018 of Baltimore Gas & Electric Company,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ JAMES R. CURTISS

James R. Curtiss

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.39

KNOW ALL MEN BY THESE PRESENTS  that I,  Joseph Haskins, Jr. , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Baltimore Gas & Electric
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ JOSEPH HASKINS, JR.

Joseph Haskins, Jr.

DATE: February 6, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.40

KNOW ALL MEN BY THESE PRESENTS  that I,  Anne R. Pramaggiore , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Baltimore Gas & Electric
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ANNE R. PRAMAGGIORE

Anne R. Pramaggiore

DATE: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.41

KNOW ALL MEN BY THESE PRESENTS  that I,  Michael D. Sullivan , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Baltimore Gas & Electric
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ MICHAEL D. SULLIVAN

Michael D. Sullivan

DATE: February 8, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.42

KNOW ALL MEN BY THESE PRESENTS  that I,  Maria Harris Tildon , do hereby appoint Calvin G. Butler, Jr. and John D. Corse, or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Baltimore Gas & Electric
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ MARIA HARRIS TILDON

Maria Harris Tildon

DATE: February 4, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.43

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,    Christopher  M.  Crane  ,  do  hereby  appoint  David  M.  Velazquez  and  Wendy  E.  Stark,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Pepco Holdings
LLC, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to
be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

Date: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.44

KNOW ALL MEN BY THESE PRESENTS  that I,  Linda W. Cropp , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them, attorney for
me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Pepco Holdings LLC, together
with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ LINDA W. CROPP

Linda W. Cropp

Date: February 7, 2018

 
 
 
POWER OF ATTORNEY

Exhibit 24.45

KNOW ALL MEN BY THESE PRESENTS  that I,  Michael E. Cryor , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them, attorney for
me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Pepco Holdings LLC, together
with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the
premises as fully and effectually in all respects as I could do if personally present.

/s/ MICHAEL CRYOR

Michael Cryor

Date: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.46

KNOW ALL MEN BY THESE PRESENTS  that I,  Ernest Dianastasis , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them, attorney
for  me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  Pepco  Holdings  LLC,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ERNEST DIANASTASIS

Ernest Dianastasis

Date: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.47

KNOW ALL MEN BY THESE PRESENTS  that I,  Debra P. DiLorenzo , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them, attorney
for  me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  Pepco  Holdings  LLC,
together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be
done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ DEBRA P. DILORENZO

Debra P. DiLorenzo

Date: February 4, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.48

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,    Anne  R.  Pramaggiore  ,  do  hereby  appoint  David  M.  Velazquez  and  Wendy  E.  Stark,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Pepco Holdings
LLC, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to
be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ANNE R. PRAMAGGIORE

Anne R. Pramaggiore

Date: February 1, 2019

 
 
POWER OF ATTORNEY

Exhibit 24.49

KNOW ALL MEN BY THESE PRESENTS  that I,   David M. Velazquez , do hereby appoint Wendy E. Stark as attorney for me and in my name and on my
behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Pepco Holdings LLC, together with any amendments thereto, to
be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the premises as fully and effectually
in all respects as I could do if personally present.

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

DATE: February 5, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.50

KNOW ALL MEN BY THESE PRESENTS  that I,  J. Tyler Anthony , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them, attorney for
me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  Potomac  Electric  Power
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ J. TYLER ANTHONY

J. Tyler Anthony

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.51

KNOW ALL MEN BY THESE PRESENTS  that I,  Phillip S. Barnett , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them, attorney for
me  and  in  my  name  and  on  my  behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018 of  Potomac  Electric  Power
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ PHILLIP S. BARNETT        

Phillip S. Barnett

DATE: February 4, 2019

 
 
 
 
POWER OF ATTORNEY

Exhibit 24.52

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,    Christopher  M.  Crane  ,  do  hereby  appoint  David  M.  Velazquez  and  Wendy  E.  Stark,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Potomac Electric
Power Company, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ CHRISTOPHER M. CRANE            

Christopher M. Crane

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.53

KNOW ALL MEN BY THESE PRESENTS  that I,  Melissa A. Lavinson , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Potomac
Electric  Power  Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and
perform all things necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ MELISSA A. LAVINSON          

Melissa A. Lavinson

DATE: February 4, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.54

KNOW ALL MEN BY THESE PRESENTS  that I,  Kevin M. McGowan , do hereby appoint David M. Velazquez and Wendy E. Stark, or either of them, attorney
for me and in my name and on my behalf to sign the annual Securities  and Exchange  Commission report on Form 10-K for 2018 of Potomac Electric Power
Company,  together  with  any  amendments  thereto,  to  be  filed  with  the  Securities  and  Exchange  Commission,  and  generally  to  do  and  perform  all  things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ KEVIN M. MCGOWAN            

Kevin M. McGowan

DATE: February 4, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.55

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,    Anne  R.  Pramaggiore  ,  do  hereby  appoint  David  M.  Velazquez  and  Wendy  E.  Stark,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Potomac Electric
Power Company, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ANNE R. PRAMAGGIORE          

Anne R. Pramaggiore

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.56

KNOW ALL MEN BY THESE PRESENTS  that I,  David M. Velazquez , do hereby appoint Wendy E. Stark, attorney for me and in my name and on my behalf
to sign the annual  Securities  and Exchange  Commission  report on Form 10-K for  2018 of Potomac Electric Power Company, together with any amendments
thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the premises as fully and
effectually in all respects as I could do if personally present.

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

DATE: February 5, 2019

 
 
 
 
POWER OF ATTORNEY

Exhibit 24.57

KNOW  ALL  MEN  BY  THESE  PRESENTS   that  I,    Anne  R.  Pramaggiore  ,  do  hereby  appoint  David  M.  Velazquez  and  Wendy  E.  Stark,  or  either  of  them,
attorney for me and in my name and on my behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Delmarva Power &
Light Company, together with any amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things
necessary to be done in the premises as fully and effectually in all respects as I could do if personally present.

/s/ ANNE R. PRAMAGGIORE

Anne R. Pramaggiore

DATE: February 1, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.58

KNOW ALL MEN BY THESE PRESENTS  that I,   David M. Velazquez , do hereby appoint Wendy E. Stark as attorney for me and in my name and on my
behalf  to  sign  the  annual  Securities  and  Exchange  Commission  report  on  Form  10-K  for  2018  of  Delmarva  Power  &  Light  Company,  together  with  any
amendments thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the premises
as fully and effectually in all respects as I could do if personally present.

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

DATE: February 5, 2019

 
 
 
POWER OF ATTORNEY

Exhibit 24.59

KNOW ALL MEN BY THESE PRESENTS  that I,   David M. Velazquez , do hereby appoint Wendy E. Stark as attorney for me and in my name and on my
behalf to sign the annual Securities and Exchange Commission report on Form 10-K for 2018 of Atlantic City Electric Company, together with any amendments
thereto, to be filed with the Securities and Exchange Commission, and generally to do and perform all things necessary to be done in the premises as fully and
effectually in all respects as I could do if personally present.

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

DATE: February 5, 2019

 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.1

I, Christopher M. Crane, certify that:

1.

I have reviewed this annual report on Form 10-K of Exelon Corporation;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s

auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ CHRISTOPHER M. CRANE

President and Chief Executive Officer

(Principal Executive Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.2

I have reviewed this annual report on Form 10-K of Exelon Corporation;

I, Joseph Nigro, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ JOSEPH NIGRO

Senior Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.3

I, Kenneth W. Cornew, certify that:

1.

I have reviewed this annual report on Form 10-K of Exelon Generation Company, LLC;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ KENNETH W. CORNEW

President and Chief Executive Officer

(Principal Executive Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.4

I, Bryan P. Wright, certify that:

1.

I have reviewed this annual report on Form 10-K of Exelon Generation Company, LLC;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ BRYAN P. WRIGHT

Senior Vice President and Chief Financial Officer

(Principal Financial Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.5

I, Joseph Dominguez, certify that:

1.

I have reviewed this annual report on Form 10-K of Commonwealth Edison Company;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ JOSEPH DOMINGUEZ

Chief Executive Officer

(Principal Executive Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.6

I, Jeanne M. Jones, certify that:

1.

I have reviewed this annual report on Form 10-K of Commonwealth Edison Company;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed  such  disclosure  controls  and  procedures,  or  caused  such  disclosure  controls  and  procedures  to  be  designed  under  our  supervision,  to
ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ JEANNE M. JONES

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.7

I, Michael A. Innocenzo, certify that:

1.

I have reviewed this annual report on Form 10-K of PECO Energy Company;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ MICHAEL A. INNOCENZO

President and Chief Executive Officer

(Principal Executive Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.8

I, Robert J. Stefani, certify that:

1.

I have reviewed this annual report on Form 10-K of PECO Energy Company;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ ROBERT. J STEFANI

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.9

I, Calvin G. Butler, Jr., certify that:

1.

I have reviewed this annual report on Form 10-K of Baltimore Gas and Electric Company;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ CALVIN G. BUTLER, JR.

Chief Executive Officer

(Principal Executive Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE
SECURITIES AND EXCHANGE ACT OF 1934

Exhibit 31.10

I, David M. Vahos, certify that:

1.

I have reviewed this annual report on Form 10-K of Baltimore Gas and Electric Company;

2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 8, 2019

/s/ DAVID M. VAHOS

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

 
 
 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.11

I have reviewed this annual report on Form 10-K of Pepco Holdings LLC;

I, David M. Velazquez, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    DAVID M. VELAZQUEZ

President and Chief Executive Officer

(Principal Executive Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.12

I have reviewed this annual report on Form 10-K of Pepco Holdings LLC;

I, Phillip S. Barnett, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    PHILLIP S. BARNETT

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.13

I have reviewed this annual report on Form 10-K of Potomac Electric Power Company;

I, David M. Velazquez, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    DAVID M. VELAZQUEZ

President and Chief Executive Officer

(Principal Executive Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.14

I have reviewed this annual report on Form 10-K of Potomac Electric Power Company;

I, Phillip S. Barnett, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    PHILLIP S. BARNETT

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.15

I have reviewed this annual report on Form 10-K of Delmarva Power & Light Company;

I, David M. Velazquez, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    DAVID M. VELAZQUEZ

President and Chief Executive Officer

(Principal Executive Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.16

I have reviewed this annual report on Form 10-K of Delmarva Power & Light Company;

I, Phillip S. Barnett, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    PHILLIP S. BARNETT

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.17

I have reviewed this annual report on Form 10-K of Atlantic City Electric Company;

I, David M. Velazquez, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    DAVID M. VELAZQUEZ

President and Chief Executive Officer

(Principal Executive Officer)

 
 
 
CERTIFICATION PURSUANT TO RULE 13a-14(a) AND 15d-14(a) OF THE SECURITIES
AND EXCHANGE ACT OF 1934

Exhibit 31.18

I have reviewed this annual report on Form 10-K of Atlantic City Electric Company;

I, Phillip S. Barnett, certify that:
1.
2. Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to
provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the  registrant’s  most  recent  fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: February 8, 2019

/s/    PHILLIP S. BARNETT

Senior Vice President, Chief Financial Officer and Treasurer

(Principal Financial Officer)

 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Exelon Corporation for the year ended December 31, 2018 , that (i) the report
fully  complies  with  the  requirements  of  section  13(a)  or  15(d)  of  the  Securities  Exchange  Act  of  1934,  and  (ii)  the  information  contained  in  the  report  fairly
presents, in all material respects, the financial condition and results of operations of Exelon Corporation.

Exhibit 32.1

Date: February 8, 2019

/s/ CHRISTOPHER M. CRANE

Christopher M. Crane

President and Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Exelon Corporation for the year ended December 31, 2018 , that (i) the report
fully  complies  with  the  requirements  of  section  13(a)  or  15(d)  of  the  Securities  Exchange  Act  of  1934,  and  (ii)  the  information  contained  in  the  report  fairly
presents, in all material respects, the financial condition and results of operations of Exelon Corporation.

Exhibit 32.2

Date: February 8, 2019

/s/ JOSEPH NIGRO

Joseph Nigro

Senior Executive Vice President and Chief Financial Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Exelon Generation Company, LLC for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Exelon Generation Company, LLC.

Exhibit 32.3

Date: February 8, 2019

/s/ KENNETH W. CORNEW

Kenneth W. Cornew

President and Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Exelon Generation Company, LLC for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Exelon Generation Company, LLC.

Exhibit 32.4

Date: February 8, 2019

/s/ BRYAN P. WRIGHT

Bryan P. Wright

Senior Vice President and Chief Financial Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Commonwealth Edison Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Commonwealth Edison Company.

Exhibit 32.5

Date: February 8, 2019

/s/ JOSEPH DOMINGUEZ

Joseph Dominguez

Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Commonwealth Edison Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Commonwealth Edison Company.

Exhibit 32.6

Date: February 8, 2019

/s/ JEANNE M. JONES

Jeanne M. Jones

Senior Vice President, Chief Financial Officer and Treasurer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of PECO Energy Company for the year ended December 31, 2018 , that (i) the
report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report fairly
presents, in all material respects, the financial condition and results of operations of PECO Energy Company.

Exhibit 32.7

Date: February 8, 2019

/s/ MICHAEL A. INNOCENZO

Michael A. Innocenzo

President and Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of PECO Energy Company for the year ended December 31, 2018 , that (i) the
report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report fairly
presents, in all material respects, the financial condition and results of operations of PECO Energy Company.

Exhibit 32.8

Date: February 8, 2019

/s/ ROBERT J. STEFANI

Robert J. Stefani

Senior Vice President, Chief Financial Officer and Treasurer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Baltimore Gas and Electric Company for the year ended December 31, 2018 ,
that (i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the
report fairly presents, in all material respects, the financial condition and results of operations of Baltimore Gas and Electric Company.

Exhibit 32.9

Date: February 8, 2019

/s/ CALVIN G. BUTLER, JR.

Calvin G. Butler, Jr.

Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Baltimore Gas and Electric Company for the year ended December 31, 2018 ,
that (i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the
report fairly presents, in all material respects, the financial condition and results of operations of Baltimore Gas and Electric Company.

Exhibit 32-10

Date: February 8, 2019

/s/ DAVID M. VAHOS

David M. Vahos

Senior Vice President, Chief Financial Officer and Treasurer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Pepco Holdings LLC for the year ended December 31, 2018 , that (i) the report
fully  complies  with  the  requirements  of  section  13(a)  or  15(d)  of  the  Securities  Exchange  Act  of  1934,  and  (ii)  the  information  contained  in  the  report  fairly
presents, in all material respects, the financial condition and results of operations of Pepco Holdings LLC.

Exhibit 32.11

Date: February 8, 2019

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

President and Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Pepco Holdings LLC for the year ended December 31, 2018 , that (i) the report
fully  complies  with  the  requirements  of  section  13(a)  or  15(d)  of  the  Securities  Exchange  Act  of  1934,  and  (ii)  the  information  contained  in  the  report  fairly
presents, in all material respects, the financial condition and results of operations of Pepco Holdings LLC.

Exhibit 32-12

Date: February 8, 2019

/s/ PHILLIP S. BARNETT

Phillip S. Barnett

Senior Vice President, Chief Financial Officer and Treasurer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Potomac Electric Power Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Potomac Electric Power Company.

Exhibit 32.13

Date: February 8, 2019

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

President and Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Potomac Electric Power Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Potomac Electric Power Company.

Exhibit 32.14

Date: February 8, 2019

/s/ PHILLIP S. BARNETT

Phillip S. Barnett

Senior Vice President, Chief Financial Officer and Treasurer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Delmarva Power & Light Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Delmarva Power & Light Company.

Exhibit 32.15

Date: February 8, 2019

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

President and Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Delmarva Power & Light Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Delmarva Power & Light Company.

Exhibit 32.16

Date: February 8, 2019

/s/ PHILLIP S. BARNETT

Phillip S. Barnett

Senior Vice President, Chief Financial Officer and Treasurer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Atlantic City Electric Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Atlantic City Electric Company.

Exhibit 32.17

Date: February 8, 2019

/s/ DAVID M. VELAZQUEZ

David M. Velazquez

President and Chief Executive Officer

 
 
 
 
 
Certificate Pursuant to Section 1350 of Chapter 63 of Title 18 United States Code

The undersigned officer hereby certifies, as to the Report on Form 10-K of Atlantic City Electric Company for the year ended December 31, 2018 , that
(i) the report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the report
fairly presents, in all material respects, the financial condition and results of operations of Atlantic City Electric Company.

Exhibit 32.18

Date: February 8, 2019

/s/ PHILLIP S. BARNETT

Phillip S. Barnett

Senior Vice President, Chief Financial Officer and Treasurer