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Duke Energy

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FY2020 Annual Report · Duke Energy
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2020 ANNUAL REPORT AND FORM 10-K

ENERGY 

FOR A BETTER TOMORROW

LYNN J. GOOD

Chair, President and 
Chief Executive Officer

DEAR SHAREHOLDER: 

At Duke Energy, our purpose is to power 
the lives of our customers and the vitality 
of our communities. In 2020, we did 
just that – overcoming the challenges of 
extreme weather, a pandemic, social unrest 
and uncertain economic conditions.  

Our teammates responded and we surpassed 
expectations by any measure – maintaining 
strong safety, operational, reliability and customer 
satisfaction metrics while accelerating our 
clean energy transition. We also took significant 
steps to eliminate uncertainties, laying a solid 
foundation for future growth while delivering on 
our financial commitments to our shareholders.

We are ready to look toward the future, 
unencumbered by issues of the past, with a 
clear vision of where our company is headed. 

1 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

 
RISING TO THE  
CHALLENGES OF 2020
The Pandemic

COVID-19 had a profound impact on our 
communities and its effects will be felt for years. 
As businesses and families adjusted to the stay-
at-home orders, we responded by supporting our 
customers, communities and employees while 
ensuring the financial health of the company. 

We were one of the first utilities to proactively 
waive certain fees and suspend disconnections  
in all jurisdictions for customers who were unable 
to pay their bills, ensuring they would not go 
without power due to financial hardships. Later in 
the year, we took a gradual approach to returning 
to standard billing and payment practices and 
worked with customers to offer customized, 
interest-free payment arrangements and connect 
them with local assistance, and funding.

Our company and Foundation donated more than 
$8 million to COVID-19 relief efforts, including 
funds to support hunger relief, local health and 
human services, educational initiatives, public 
utility assistance and small businesses. 

Time and again, we were there for our customers  
when they needed us most.

However, nothing was more important than 
the health and safety of our employees. Almost 
overnight, we transitioned approximately 18,000 
employees to remote work. We put protocols in  
place to keep our frontline employees safe, 
including voluntary testing, staggered shifts, 
enhanced cleaning and personal protective 
equipment standards. And we recognized the 
importance of our employees’ overall well-being, 
providing financial and dependent care support as 
well as emotional support resources and programs.

2 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

Given the turmoil in the overall 
economy, job and financial 
security were also top of mind 
for employees. I’m proud that we 
were able to avoid across-the-
board salary reductions or layoffs.  

As the pandemic disrupted financial 
markets, we took immediate action 
to ensure our financial stability. We  
shored up our liquidity position by  
entering into low-cost loans with 
our banking partners. As businesses 
shut down and industrial customers 
paused production, our overall 
retail load declined approximately 
2 percent compared to 2019. 
In response, we developed an 
aggressive, $450 million mitigation 
plan, showcasing our agility. 
Many of the cost mitigation plans 
will serve us into 2021 as we 
expect electric load to return to 
pre-pandemic levels in 2022. 

The Atlantic Coast Pipeline

In 2014, we announced the Atlantic 
Coast Pipeline (ACP) project to 
help meet the rapidly growing 
energy needs of our customers, 
drive economic development and 
create thousands of jobs. Despite 
a tremendous effort by so many 
within the company and the strong 
support in our communities, in 
July we announced our decision 
to cancel the project, together 
with our partner and the majority 
owner, Dominion Energy.

This was extremely difficult as ACP 
was a key part of our plan to bring 
cleaner, low-cost natural gas to North 
Carolina and the Southeast. But as legal 
challenges continued to delay the project 
and nearly doubled its original cost, 
we believed canceling it was the best 
decision for our customers and investors. 

We will continue to identify opportunities 
to strengthen our infrastructure to benefit 
customer growth and maintain reliability. 

Social Justice and 
Racial Equity

2020 renewed and accelerated our  
focus on social justice and racial equality. 

To support organizations addressing 
these issues, our Foundation donated 
more than $2 million. We also held 
more than 500 Pathways to Inclusion 
conversation sessions within our 
company, listening to each other, 
helping many discover the depth of the 
problems we face and learning how 
we can work to strengthen inclusion in 
our company. These sessions helped 
inform our company’s action plans 
to drive more diversity, equity and 
inclusion in our workforce, leadership, 
supply chain and communities. 

This is only the start. As a company, 
we have an opportunity to champion 
change, to embrace the voices of our 
employees and communities – and 
do our part to promote progress.

3 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

ADVANCING OUR CLEAN  
ENERGY TRANSFORMATION 

We did more than overcome the challenges that 
2020 presented. We learned from them while also 
accelerating our clean energy transformation. 

Path to Net-Zero

In October, we held our inaugural Environmental, 
Social and Governance (ESG) Day for investors, 
laying out the blueprint for our clean energy 
transformation. ESG is an important area of 
focus for Duke Energy and our stakeholders, 
and this event gave us a platform to highlight 
the extraordinary progress we’ve made and 
demonstrate our promise of more to come.

We have a clear destination: achieve net-
zero carbon emissions by 2050. Since 
2005, we’ve reduced our carbon emissions 
by over 40 percent and stand as a national 
leader in low-carbon intensity. 

On our path to net-zero, we’re overseeing the 
largest coal retirement program in our industry.  
We plan to retire all coal-only units by 2030 in the 
Carolinas. In Indiana, we’re accelerating the closure 
of coal plants – shortening average retirement dates 
by 40 percent – adding to the 1,100 megawatts 
of coal we have retired in that region since 2010. 

4 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

 
Transforming Our Fleet

As we shift away from coal, we will  
continue to invest significantly in 
renewables. Today, we have more 
than 8 gigawatts of renewable 
energy contracted, owned or 
operated. By 2025, we plan to 
roughly double that figure and, by 
2030, triple our current renewable 
capacity for our regulated utilities. 
In 2050, the largest source of 
energy in our regulated utilities 
will come from renewable energy 
resources, representing about 
40 percent of our capacity.

Last year, we connected nearly  
350 megawatts of solar power in 
our North Carolina regulated utilities. 
In Florida, we’re investing nearly  
$1 billion in solar projects – bringing  
700 megawatts of solar online 
through 2022. And, we received 
approval for our $1 billion Clean 
Energy Connection shared solar 
program in Florida, which will 
add another 750 megawatts 
of solar by the end of 2024. 

In our Commercial Renewables 
business, three new utility-scale 
projects came online last year, 
totaling more than 460 megawatts. 
Currently, we own or operate 
nearly 4 gigawatts in Commercial 
Renewables of the company’s 
total 8.8 gigawatts of renewable 
energy. By the end of 2021, our 
Commercial Renewables portfolio 
will grow to about 4.7 gigawatts.

To complement our renewables 
growth, we’re expanding our  
energy storage portfolio. During the 
next five years, we have plans for 
$600 million in new battery storage 
investment across our regulated 
businesses. That includes deploying 
50 megawatts of batteries totaling 
$100 million in Florida, including 
our first battery storage installation 
in the state later this year. We 
brought our 9-megawatt Asheville 
storage project online in 2020 – the 
largest battery system in North 
Carolina. In addition, our Bad Creek 
and Jocassee pumped-storage hydro 
facilities represent more than  
2,200 megawatts of storage 
capacity. We have a project 
underway to add more megawatts 
to Bad Creek, and by 2023, 
we will have added about 280 
megawatts to the station. 

We expect storage investment to 
accelerate over this decade and 
beyond – and presently project more 
than 13,000 megawatts of energy 
storage on our system by 2050. 

But we cannot maintain affordability 
and reliability without carbon-free 
nuclear. The 11 nuclear units that 
we operate provide more than 50 
percent of the power we generate in 
the Carolinas. Nuclear remains the 
workhorse of our system – and we’re 
pursing subsequent license renewals 
for our entire fleet to ensure it serves 
the region for decades to come.

5 | 2020 DUKE ENERGY ANNUAL REPORT 

As we transition our fleet, 
we continue to see the need 
for dispatchable resources to 
ensure that the lights come on 
when our customers flip the 
switch. This is where natural 
gas plays an important role. 

In April, our 560-megawatt 
Asheville Combined Cycle Station 
– the most efficient natural gas 
plant in the Carolinas – became 
fully operational, allowing us to 
retire a two-unit coal plant at 
the Asheville site. We also made 
progress on the construction of 
our $300 million Robeson natural 
gas storage facility in North 
Carolina, which will be important 
for reliability and resiliency during 
extreme weather events.

We recognize the importance of 
environmental stewardship in 
our gas business and have been 
aggressively working to lower 
methane emissions. In October, 
we announced our pledge to 
reduce methane emissions to 
net-zero by 2030 for our natural 
gas distribution companies. We 
also announced a partnership with 
SustainRNG to harness renewable 
natural gas on dairy farms, and 
through our membership in ONE 
Future, we’re engaged in decreasing 
methane emissions across the 
entire natural gas supply chain. 

Modernizing Our 
Infrastructure 

Our generation transition relies  
upon modernizing and enhancing  
our energy grid – the largest  
in the nation. 

We are making grid improvements 
in our states, including a 10-year 
storm protection plan approved 
last fall in Florida and a three-
year grid improvement plan in 
North Carolina. In addition, we 
have ongoing infrastructure plans 
in our South Carolina, Ohio and 
Kentucky service territories, and 
continue executing our $1.4 billion 
transmission and distribution 
modernization plan in Indiana. Each 
of these investments are designed 
to increase reliability, strengthen 
the grid and support our work to 
enable a cleaner energy future. 

We continue to install smart 
meters – more than 8.5 million 
so far – providing customers 
with more information about 
their energy use while helping 
us improve outage detection and 
restoration. By the end of 2021, 
nearly all of our customers will 
be served by smart meters.

6 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

We’re also advancing self-healing 
technology, which automatically 
detects outages and reroutes power 
to other lines to restore service more 
quickly and efficiently. This past 
year, the technology helped to avoid 
nearly 800,000 extended customer 
outages and save more than 1.8 
million hours of lost outage time. 

We have an important role in 
lowering carbon emissions across 
the economy – and electrification 
is an important way that we 
can contribute. To help spur 
electric vehicle adoption, charging 
infrastructure must be expanded and 
more accessible. We are accelerating 
this expansion through several pilot 
programs. In Florida, our pilot is 
off the ground with more than 570 
charging stations already installed. 
We also received approvals in North 
Carolina and South Carolina and 
have a proposal pending in Ohio. 

We also pledged to reduce 
emissions from our own fleet by 
electrifying all of our light-duty 
vehicles by 2030 and 50 percent of 
our medium-duty, heavy-duty and 
off-road vehicles with electric, hybrid 
electric or carbon-free alternatives.

Spurring Innovation 

Reaching our ambitious net-zero 
target will require new technologies 
on our system. We need zero-
emitting load-following resources 
(ZELFRs) that are low carbon or 
carbon-free and can respond to 
dynamic changes in both customer 
demand and renewable generation. 

That’s why we are acting now – 
investing in research, development 
and advocacy for these technologies. 
In December, we announced a 
partnership with Siemens Energy 
and Clemson University to study 
the use of hydrogen for energy 
storage and as a low- or no-
carbon fuel source. We also have 
a partnership with TerraPower and 
GE Hitachi on its advanced non-
light water reactor. In addition, 
we’re actively participating in the 
Electric Power Research Institute 
and the Gas Technology Institute’s 
Low-Carbon Research Initiative to 
help accelerate the development 
of promising technologies.

We have an opportunity as a 
nation to invest in research and 
development in this decade 
to ensure we have scalable, 
cost-effective technologies 
needed by 2035 and to meet 
our long-term goals.

7 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

FOCUSED ON  
THE FUNDAMENTALS

Underpinning our progress is doing the day-
in, day-out hard work of running America’s 
premier energy company at the highest level.

Customer-Focused

The needs of our customers remain, and will 
always remain, at the heart of our strategy. Our 
internal customer satisfaction metrics exceeded 
our targets by almost 15 percent and reached 
record highs in 2020 – largely due to the care 
and flexibility we showed our customers. 

After disconnections were suspended, we  
worked closely with customers to enroll them in 
extended payment plans to meet their unique needs. 
In total, we sent nearly 1.1 million proactive offers  
to customers in arrears and set up nearly 700,000 
deferred payment arrangements. We will continue  
to help customers as they recover from the pandemic.

In 2020, we made a number of improvements  
to enhance our customers’ experience, including  
a new bill format, proactive notifications, more 
customer-friendly policies, and enhanced digital 
capabilities. We also made progress on our new 
customer information system, Customer Connect.  
The system will launch in April 2021 in our  
Duke Energy Carolinas utility, allowing us to bring 
new services and enhancements to our customers. 
It will be deployed for Duke Energy Progress and 
Duke Energy Florida customers later in 2021.

Delivering value to our customers is always 
at the forefront for us as we undertake 
this historic transformation.

8 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

Safety and Operations

Safety remains one of our most 
important core values. That 
commitment has never wavered, 
even in a turbulent year. 

We led our industry in safety 
performance for five years in a 
row – based on measures by the 
Edison Electric Institute (EEI). We 
anticipate 2020 will be the sixth 
consecutive year of “Best in Class” 
as evaluated amongst our peers. Our 
Total Incident Case Rate – the OSHA 
standard for tracking employee 
injuries – has declined every year for 
nearly a decade. We also continue 
to meet our internal targets for 
environmental performance. 

I am proud of the safety culture we 
have built at Duke Energy – and 
the importance our teammates 
place on this fundamental 
pillar of our business. 

Our generation fleet met the 
challenges of operating during a 
pandemic head-on. Our nuclear 
fleet – which remains the largest 
regulated fleet – continued to 
provide our customers in the 
Carolinas carbon-free power. The 
capacity factor of our fleet was 
94.42 percent in 2020, which 
marks the 22nd consecutive year of 
a capacity factor above 90 percent. 
Our Regulated & Renewable Energy 
organization maintained strong 
reliability as we transform our 
fleet. That includes the accelerated 
planned retirement of three coal 
units at our Allen Steam Station.

In addition, our employees safely 
completed more than 150 refueling 
and maintenance outages across 
our Nuclear and Regulated & 
Renewable Energy organizations and 
managed our hydro and ash basin 
operations during 11 high-water 
events. And their focus on operational 
excellence led to a 75 percent 
improvement in customer minutes 
of interruption and a 9 percent 
improvement in major event days. 

Despite an extremely active hurricane 
season in 2020, compounded by the 
global pandemic, our storm response 
was unimpeded as we put procedures 
in place to keep our response teams 
safe. This included temperature 
checks, cleaning protocols, nurse 
stations and newly configured base  
camps as we responded to two 
hurricanes, Isaias and Zeta, and one  
tropical storm, Eta. 

In all, nearly 15,000 teammates were 
on the front lines, restoring more 
than 1.5 million outages from these 
storms. Our self-healing technologies 
also performed well, preventing more 
than 61,000 customer outages and 
nearly 280,000 hours of outage 
time. We also sent crews to the 
Gulf of Mexico, as this region was 
hit particularly hard from a record-
setting Atlantic hurricane season. 

Safety and operational excellence 
will always be foundational to 
our success at Duke Energy.

9 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

In Kentucky, the commission 
approved our rate case, including 
our Green Source Advantage 
Program that allows commercial 
and industrial customers more 
access to renewables. In Indiana, 
we received an order in our first 
base rate request in 16 years. We 
also participated in the 21st Century 
Energy Policy Task Force, examining 
how best to move the state toward 
cleaner energy while maintaining 
affordability and reliability.

We reached a constructive 
settlement in our Piedmont 
Natural Gas rate case with the 
Tennessee Attorney General’s 
Consumer Advocate division in 
early 2021, allowing us to recover 
needed infrastructure investments 
to serve our growing customer 
base in and around Nashville. 

Our ability to deliver on our clean 
energy transformation is only 
possible with the help and support 
of stakeholders putting their trust 
in us over the years. We are at a 
pivotal moment in time and thank 
them for challenging us, being 
willing to have hard conversations, 
pushing us to innovate and 
improve. This is how we will 
deliver the results expected of us. 

Regulatory

We maintained our commitment 
to stakeholder engagement and 
collaboration as we engaged 
regulators and policymakers 
in our jurisdictions.

We developed innovative Integrated 
Resource Plans (IRPs) in the 
Carolinas, outlining comprehensive 
proposals and offering six potential 
pathways to meet key carbon 
reduction milestones over the 
next 15 years while balancing 
affordability for customers. And 
for the past year, we’ve been 
working with stakeholder groups 
to help shape North Carolina’s 
Clean Energy Plan, with a common 
goal of reaching net-zero carbon 
emissions in a way that best serves 
our customers and our state. This 
complements the efforts underway 
on regulatory reform, including 
the introduction of more efficient 
cost recovery mechanisms.

We conducted rate cases for our 
two utilities in North Carolina as 
we sought recovery for important 
clean energy and infrastructure 
investments. In addition, we 
worked with solar developers in the 
Carolinas to fundamentally change 
the interconnection process in North 
Carolina and design a breakthrough 
net-metering framework in South 
Carolina, pending approval.

10 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

BUILDING MOMENTUM  
FOR 2021 AND BEYOND

In 2020, we adapted and learned new ways of working  
that will benefit us in the years ahead. And that momentum  
has continued in 2021.

In January of this year, we filed a milestone settlement, alongside 
the North Carolina Attorney General, North Carolina Public Staff 
and Sierra Club, to end the debate around coal ash cost recovery. 
If approved, it will provide immediate and long-term cost benefits 
for customers over the next decade, resolving all the remaining 
major issues on coal ash management in North Carolina. 

The same month, we secured a minority investment in  
Duke Energy Indiana from GIC, a global investment firm with 
significant experience investing in U.S. infrastructure companies. 
This investment will generate $2.05 billion in proceeds to fund 
our clean energy investments and grid enhancement projects. 
The premium valuation is an effective way for us to raise capital, 
displacing the need to issue common stock through 2025. 

We also collaborated with business and consumer groups in 
Florida, including the Office of Public Counsel, to establish 
a new three-year rate plan settlement for Duke Energy 
Florida. This will allow us to invest nearly $5 billion in grid 
modernization and emerging technologies and give our investors 
and customers predictability as we deliver results in the state. 
If approved by the Florida Public Service Commission, the 
settlement agreement will become effective January 1, 2022.  

These transactions, along with our significant cost mitigation 
efforts, bolstered our growth potential. We introduced our 
2021 guidance range of $5.00 to $5.30, with a midpoint 
of $5.15, and increased our long-term EPS growth rate to 
5 to 7 percent through 2025. In addition, we increased 
our five-year capital expenditure plan to $59 billion.

Duke Energy is a stronger, more agile company today because  
of our unwavering commitment to those who count on us. 
We’ve addressed headwinds to create more clarity and 
we’re charting a new, exciting course for our company.

11 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

Last year, we proved the strength and resolve of 
our company and our people – delivering strong 
financial results, reliable energy and compassion 
to our customers in the face of a global pandemic.

As we look ahead, Duke Energy stands at an 
inflection point as we begin a new era for our 
company – marked by a clear vision for the 
future. We’re poised for success and growth 
in ways that we have not seen before as we 
accelerated our path forward with constructive 
regulatory outcomes that provide valuable 
clarity for our customers and investors – and a 
compelling clean energy vision to guide the way.

I am very proud of our results and excited 
about what lies ahead for Duke Energy.

Lynn J. Good 
Chair, President and Chief Executive Officer 

12 | 2020 DUKE ENERGY ANNUAL REPORT / LETTER FROM LYNN GOOD

ENERGY FOR A BETTER TOMORROWOur Financial Highlightsa

(In millions, except per share amounts)

Operating Results

Total operating revenues

Income from continuing operations

Net income

Net income available to Duke Energy Corporation  
common stockholders

Cash Flow Data

2020

2019

2018

$23,868

$25,079

$24,521

$1,075

$1,082

$1,270

$3,578

$3,571

$3,707

$2,625

$2,644

$2,666

Net cash provided by operating activities

$8,856

$8,209

$7,186 

Common Stock Data

Shares of common stock outstanding

     Year-end

     Weighted average – basic

     Weighted average – diluted

Reported basic and diluted earnings per share (GAAP)

Adjusted basic and diluted earnings per share (non-GAAP)

Dividends declared per share

Dividends declared on Series A preferred stock per depositary share

769

737

738

$1.72

$5.12

$3.82

$1.44

733

729

729

$5.06

$5.06

$3.75

$1.03

Dividends declared on Series B preferred stock per share

$49.29

__

727

708

708

$3.76

$4.72

$3.64

__

__

Balance Sheet Data

Total assets

$162,388

$158,838

$145,392

Long-term debt including finance leases, less current maturities

$55,625

$54,985

$51,123

Total Duke Energy Corporation stockholders’ equity

$47,964

$46,822

$43,817

Earnings per share  
(in dollars)

Reported Diluted

Adjusted Diluted

Dividends declared 
per share (in dollars)

Capital and investment  
expenditures (dollars in billions)

5.06

5.06

5.12

3.64

3.75

3.82

9.8

11.4

10.3

4.72

3.76

1.72

2018

2019

2020

2018

2019

2020

2018

2019

2020

a Significant transactions reflected in the results above include: (i) the cancellation of the Atlantic Coast Pipeline in 2020, (ii) regulatory charges related to the Duke Energy Carolinas and Duke Energy Progress 
North Carolina coal ash settlement in 2020, (iii) the reversal of 2018 severance costs due to the partial settlement of the Duke Energy Carolinas and Duke Energy Progress 2019 North Carolina rate cases in 
2020, (iv) growth in Commercial Renewables from tax equity projects placed in service in 2020 and 2019 and (v) regulatory and legislative charges related to Duke Energy Progress and Duke Energy Carolinas 
North Carolina rate case orders and impairment charges in 2020 and 2018. For further information refer to Notes 1, 3, 11 and 12 to the Consolidated Financial Statements, “Summary of Significant Accounting 
Policies,” “Regulatory Matters,” “Goodwill and Intangible Assets” and “Investments in Unconsolidated Affiliates.”

13 | 2020 DUKE ENERGY ANNUAL REPORT 

42
33
17
8

39
37 
22 
2

Duke Energy at a Glance

Electric Utilities and Infrastructure
Generation Diversity (percent owned capacity)1 

Natural Gas Customer Diversity
Gas Utilities and Infrastructure conducts natural gas 
distribution operations primarily through the regulated public 
utilities of Piedmont Natural Gas and Duke Energy Ohio.

Natural Gas Operations (throughput)2

Generated (net output gigawatt-hours (GWh))2

Customer Diversity (in billed GWh sales)2

51
18
15
9
7

52
46
3

 ¡ Regulated natural gas transmission and distribution services 
to approximately 1.6 million customers in the Carolinas, 
Tennessee, southwestern Ohio and Northern Kentucky

 ¡ Maintains more than 34,200 miles of natural gas transmission 
and distribution pipelines and 27,200 miles of natural gas  
service pipelines

Commercial Renewables
Generation Diversity (percent owned capacity)1,3

Electric Utilities and Infrastructure conducts operations primarily 
through the regulated public utilities of Duke Energy Carolinas,  
Duke Energy Progress, Duke Energy Florida, Duke Energy Indiana 
and Duke Energy Ohio. 

Electric Operations
 ¡ Owns approximately 50,807 megawatts (MW) of  

generating capacity

 ¡ Service area covers about 91,000 square miles with an  

estimated population of 25 million 

 ¡ Service to approximately 7.9 million residential, commercial  

and industrial customers 

 ¡ 282,400 miles of distribution lines and a 

31,300-mile transmission system

1  As of December 31, 2020.  | 2  For the year ended December 31, 2020.
3  Contains projects included in tax equity structures where investors have differing 
interests in the projects’ economic attributes (100% of the tax equity projects’ 
capacity is included).

Commercial Renewables primarily acquires, develops, builds  
and operates wind and solar renewable generation throughout  
the continental U.S. The portfolio includes nonregulated 
renewable energy and energy storage businesses.

Commercial Renewables’ renewable energy includes utility-scale 
wind and solar generation assets, distributed solar generation 
assets, distributed fuel cell assets and a battery storage project, 
which total 2,763 MW across 21 states from 21 wind facilities, 
150 solar projects, 70 fuel cell locations and two battery storage 
facilities. The power produced from renewable generation is 
primarily sold through long-term contracts to utilities, electric 
cooperatives, municipalities and corporate customers.

As part of its growth strategy, Commercial Renewables 
has expanded its investment portfolio through the addition 
of distributed solar companies and projects, energy 
storage systems and energy management solutions 
specifically tailored to commercial businesses.

14 | 2020 DUKE ENERGY ANNUAL REPORT 

 42% Natural Gas/Fuel Oil 33% Coal 17% Nuclear 8% Hydro and Renewable 39% Natural Gas/Fuel Oil 37% Nuclear 22% Coal 2% Hydro and Renewable 34% Residential 30% General Services 19% Industrial 17% Wholesale/Other 51% Power Gen 18% General Services 15% Residential 9% Industrial 7% Other52% Wind 46% Solar 2% Fuel Cell/Storage DUKE ENERGY
CORPORATION

Cautionary Statement  
Regarding Forward-Looking  
Information

Non-GAAP Financial  
Measures

2020 
Form 10-K

CAUTIONARY NOTE REGARDING FORWARD-LOOKING 
INFORMATION

This document includes forward-looking statements within the meaning 
of Section 27A of the Securities Act of 1933 and Section 21E of the Securities 
Exchange Act of 1934. Forward-looking statements are based on management’s 
beliefs and assumptions and can often be identified by terms and phrases that 
include “anticipate,” “believe,” “intend,” “estimate,” “expect,” “continue,” 
“should,” “could,” “may,” “plan,” “project,” “predict,” “will,” “potential,” 
“forecast,” “target,” “guidance,” “outlook” or other similar terminology. Various 
factors may cause actual results to be materially different than the suggested 
outcomes within forward-looking statements; accordingly, there is no assurance 
that such results will be realized. For details on the uncertainties that may cause 
our actual future results to be materially different than those expressed in our 
forward-looking statements, see our Form 10-K for the year ended December 31, 
2020, and Quarterly Reports on Form 10-Q filed with the SEC and available 
at the SEC’s website at sec.gov. In light of these risks, uncertainties and 
assumptions, the events described in the forward-looking statements might not 
occur or might occur to a different extent or at a different time than described. 
Forward-looking statements speak only as of the date they are made. Duke Energy 
expressly disclaims an obligation to publicly update or revise any forward-looking 
statements, whether as a result of new information, future events, or otherwise. 

NON-GAAP MEASURES

Adjusted Earnings per Share (EPS)

Duke Energy’s 2020 Annual Report references adjusted EPS for the 
year-to-date periods ended December 31, 2020, 2019 and 2018 of $5.12, $5.06 
and $4.72, respectively. 

The non-GAAP financial measure, adjusted EPS, represents basic EPS 
available to Duke Energy Corporation common stockholders (GAAP reported EPS), 
adjusted for the per share impact of special items. As discussed below, special 
items represent certain charges and credits, which management believes are 
not indicative of Duke Energy’s ongoing performance. Management believes 

the presentation of adjusted EPS provides useful information to investors, 
as it provides them with an additional relevant comparison of Duke Energy’s 
performance across periods. Management uses this non-GAAP financial measure 
for planning and forecasting and for reporting financial results to the Duke Energy 
Board of Directors, employees, stockholders, analysts and investors. Adjusted 
EPS is also used as a basis for employee incentive bonuses. The most directly 
comparable GAAP measure for adjusted EPS is reported basic EPS available to 
Duke Energy Corporation common stockholders. 

Special items included in the periods presented include the following items, 

which management believes do not reflect ongoing costs:

• Gas Pipeline Investments represents costs related to the cancellation of 

the ACP pipeline and additional exit costs related to Constitution.

• Regulatory and Legislative Impacts in 2020 represents charges related 
to Duke Energy Carolinas and Duke Energy Progress CCR settlement 
agreement and the partial settlements in the 2019 North Carolina rate 
cases. In 2018, the charges related to the Duke Energy Progress and Duke 
Energy Carolinas North Carolina rate case orders and the repeal of the 
South Carolina Base Load Review Act.

•  Severance in 2020 represents the reversal of 2018 costs, which were deferred 
as a result of a partial settlement in the Duke Energy Carolinas and the Duke 
Energy Progress 2019 North Carolina rate cases. In 2018, severance charges 
relate to companywide initiatives, excluding merger integration, to standardize 
processes and systems, leverage technology and workforce optimization.

• Impairment Charges in 2019 represents a reduction of a prior year 

impairment at Citrus County CC and an OTTI on the remaining investment 
in Constitution. For 2018, it represents an impairment at Citrus County 
CC, a goodwill impairment at Commercial Renewables, and an OTTI of an 
investment in Constitution.

• Sale of Retired Plant represents the loss associated with selling Beckjord, 

a nonregulated generating facility in Ohio.

• Costs to Achieve Mergers represents charges that result from strategic 

acquisitions.

• Impacts of the Tax Act represents amounts recognized related to the Tax Act.

Duke Energy’s adjusted EPS may not be comparable to a similarly titled 

measure of another company because other entities may not calculate the 
measure in the same manner.

The following is a reconciliation of reported EPS to adjusted EPS for 2020, 2019 and 2018:

(per share)
Reported EPS
Adjustments to Reported:

Gas Pipeline Investments
Regulatory and Legislative Impacts
Severance
Impairment Charges
Sale of Retired Plant
Costs to Achieve Mergers
Impacts of the Tax Act
Discontinued Operations

Adjusted EPS

Adjusted EPS Guidance

Duke Energy’s 2020 Annual Report references Duke Energy’s forecasted 
2021 adjusted EPS guidance range of $5.00 to $5.30 per share. The materials 
also reference a preliminary estimate of the 2021 adjusted EPS midpoint of 
approximately $5.15. In addition, the materials reference the long-term range of 
annual growth of 5 to 7 percent through 2025 off the midpoint of 2021 adjusted 
EPS guidance range of $5.15. The forecasted adjusted EPS is a non-GAAP financial 

Years Ended December 31,

2020
1.72

2.32
1.19
(0.10)
—
—
—
—
(0.01)

5.12

$

$

2019
5.06  

—
—
—
(0.01)
—
—
—
0.01

5.06

$ 

$ 

$

$

2018
3.76

—
0.29
0.21
0.25
0.12
0.09
0.03
(0.03)

4.72

measure as it represents basic EPS available to Duke Energy Corporation common 
stockholders (GAAP reported EPS), adjusted for the per share impact of special 
items (as discussed under Adjusted EPS). Due to the forward-looking nature of this 
non-GAAP financial measure for future periods, information to reconcile it to the 
most directly comparable GAAP financial measure is not available at this time, as 
management is unable to project all special items for future periods, such as legal 
settlements, the impact of regulatory orders or asset impairments.

(Mark One)
  

  

Commission 
file number 

1-32853 

1-4928 

1-15929 

1-3382 

1-3274 

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-K

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

For the fiscal period ended December 31, 2020 or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from 

to

Registrant, State of Incorporation or Organization, Address of  
Principal Executive Offices and Telephone Number 

DUKE ENERGY CORPORATION 
(a Delaware corporation) 550 South Tryon Street  
Charlotte, North Carolina 28202-1803 704-382-3853

IRS Employer
Identification No.

20-2777218

DUKE ENERGY CAROLINAS, LLC 
(a North Carolina limited liability company) 
526 South Church Street  
Charlotte, North Carolina 28202-1803 
704-382-3853 
56-0205520 

PROGRESS ENERGY, INC. 
(a North Carolina corporation) 
410 South Wilmington Street  
Raleigh, North Carolina 27601-1748 
704-382-3853 
56-2155481 
DUKE ENERGY PROGRESS, LLC 
(a North Carolina limited liability company) 
410 South Wilmington Street 
Raleigh, North Carolina 27601-1748 
704-382-3853 
56-0165465 

DUKE ENERGY FLORIDA, LLC
(a Florida limited liability company)
299 First Avenue North
St. Petersburg, Florida 33701
704-382-3853 
59-0247770 

1-1232 

1-3543 

1-6196 

DUKE ENERGY OHIO, INC.

(an Ohio corporation) 
139 East Fourth Street
Cincinnati, Ohio 45202 
704-382-3853 
31-0240030

DUKE ENERGY INDIANA, LLC
(an Indiana limited liability company) 
1000 East Main Street 
Plainfield, Indiana 46168 
704-382-3853 
35-0594457
PIEDMONT NATURAL GAS COMPANY, INC.
(a North Carolina corporation)
4720 Piedmont Row Drive 
Charlotte, North Carolina 28210 
704-364-3120 
56-0556998

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

Registrant 

Title of each class 

Duke Energy Corporation (Duke Energy) 
Duke Energy 
Duke Energy 
Duke Energy 

Common Stock, $0.001 par value  
5.125% Junior Subordinated Debentures due January 15, 2073 
5.625% Junior Subordinated Debentures due September 15, 2078 
Depositary Shares, each representing a 1/1,000th 
interest in a share of 5.75% Series A Cumulative
Redeemable Perpetual Preferred Stock, par value
$0.001 per share

Trading symbols 

DUK 
DUKH 
DUKB 
DUK PR A 

Name of each exchange on which registered
New York Stock Exchange LLC
New York Stock Exchange LLC
New York Stock Exchange LLC
New York Stock Exchange LLC

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

SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: None

Duke Energy 
Duke Energy Carolinas, LLC (Duke Energy Carolinas) 
Progress Energy, Inc. (Progress Energy) 
Duke Energy Progress, LLC (Duke Energy Progress) 
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes  No  (Response applicable to all registrants.)

Duke Energy Florida, LLC (Duke Energy Florida) 
Duke Energy Ohio, Inc. (Duke Energy Ohio) 
Duke Energy Indiana, LLC (Duke Energy Indiana) 
Piedmont Natural Gas Company, Inc. (Piedmont) 

No  
No  
No  
No 	

Yes  
Yes  
Yes  
Yes  

Yes  
Yes  
Yes  
Yes  

No 
No 
No 
No 

Indicate by check mark whether the registrants (1) have 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  No 
Indicate by check mark whether the registrants have submitted electronically every Interactive Data File required to be submitted 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 such files). Yes  No 
Indicate by check mark whether Duke Energy 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.: Large Accelerated Filer  Accelerated Filer  Non-accelerated  
Filer  Smaller Reporting Company  Emerging Growth Company 
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. 
Indicate by check mark whether each of Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont is a large accelerated filer,  
accelerated filer, non-accelerated filer, smaller reporting company, or 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.: Large Accelerated Filer  Accelerated Filer  Non-accelerated Filer  Smaller Reporting Company  Emerging Growth Company 
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. 
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under  
Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7252(b)) by the registered public accounting firm that prepared or issued its audit report. 

Indicate by check mark whether each of the registrants is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  No  

Estimated aggregate market value of the common equity held by nonaffiliates of Duke Energy at June 30, 2020. 

Number of shares of Common Stock, $0.001 par value, outstanding at January 31, 2021. 

  $58,688,204,289 
  768,663,580 

DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Duke Energy definitive proxy statement for the 2021 Annual Meeting of the Shareholders or an amendment to this Annual Report are incorporated by reference into PART III, Items 10, 11 and 13 hereof.
This combined Form 10-K is filed separately by eight registrants: Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont  
(collectively the Duke Energy Registrants). Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. Each registrant makes no representation  
as to information relating exclusively to the other registrants.
Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont meet the conditions set forth in General Instructions I(1)(a) and  
(b) of Form 10-K and are, therefore, filing this Form 10-K with the reduced disclosure format specified in General Instructions I(2) of Form 10-K. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TABLE OF CONTENTS

FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2020

Item 

Page

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

5

5

5

5

14

16

16

16

16

17

17

17

24

24

28

28

29

30

30

56

57

GLOSSARY OF TERMS

PART I.

1. 

BUSINESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DUKE ENERGY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

BUSINESS SEGMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DUKE ENERGY CAROLINAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

PROGRESS ENERGY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DUKE ENERGY PROGRESS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DUKE ENERGY FLORIDA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DUKE ENERGY OHIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DUKE ENERGY INDIANA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

PIEDMONT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

1A.  RISK FACTORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

1B.  UNRESOLVED STAFF COMMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

2. 

3. 

4. 

PROPERTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

LEGAL PROCEEDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

MINE SAFETY DISCLOSURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

PART II.

5. 

6. 

7. 

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

SELECTED FINANCIAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

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

7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK . . . . . . . . . 

8. 

9. 

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA  . . . . . . . . . . . . . . . . . . . . . 

 CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON  
ACCOUNTING AND FINANCIAL DISCLOSURE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  218

9A.  CONTROLS AND PROCEDURES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  218

PART III.

10.  DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE  . . . . . . . . . . .  220

11. 

12. 

13. 

EXECUTIVE COMPENSATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  220

 SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS  
AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS. . . . . . . . . . . . . . . . .  220

 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND  
DIRECTOR INDEPENDENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  220

14.  PRINCIPAL ACCOUNTING FEES AND SERVICES  . . . . . . . . . . . . . . . . . . . . . . . . . . .  221

PART IV.

• The ability to recover eligible costs, including amounts associated with coal ash 

impoundment retirement obligations and costs related to significant weather events, 
and to earn an adequate return on investment through rate case proceedings and the 
regulatory process;

• The costs of decommissioning nuclear facilities could prove to be more extensive than 

amounts estimated and all costs may not be fully recoverable through the regulatory process;

• Costs and effects of legal and administrative proceedings, settlements, investigations 

and claims;

• Industrial, commercial and residential growth or decline in service territories or customer 

bases resulting from sustained downturns of the economy and the economic health 
of our service territories or variations in customer usage patterns, including energy 
efficiency efforts and use of alternative energy sources, such as self-generation and 
distributed generation technologies;

• Federal and state regulations, laws and other efforts designed to promote and expand the 
use of energy efficiency measures and distributed generation technologies, such as private 
solar and battery storage, in Duke Energy service territories could result in customers leaving 
the electric distribution system, excess generation resources as well as stranded costs;

• Advancements in technology;
• Additional competition in electric and natural gas markets and continued industry 

consolidation;

• The influence of weather and other natural phenomena on operations, including the 
economic, operational and other effects of severe storms, hurricanes, droughts, 
earthquakes and tornadoes, including extreme weather associated with climate change;

• Changing customer expectations and demands including heightened emphasis on 

environmental, social and governance concerns;

• The ability to successfully operate electric generating facilities and deliver electricity to 
customers including direct or indirect effects to the company resulting from an incident 
that affects the United States electric grid or generating resources;

• Operational interruptions to our natural gas distribution and transmission activities;
• The availability of adequate interstate pipeline transportation capacity and natural gas 

supply;

• The impact on facilities and business from a terrorist attack, cybersecurity threats, data 

security breaches, operational accidents, information technology failures or other catastrophic 
events, such as fires, explosions, pandemic health events or other similar occurrences;

• The inherent risks associated with the operation of nuclear facilities, including 

environmental, health, safety, regulatory and financial risks, including the financial 
stability of third-party service providers;

• The timing and extent of changes in commodity prices and interest rates and the ability 
to recover such costs through the regulatory process, where appropriate, and their 
impact on liquidity positions and the value of underlying assets;

• The results of financing efforts, including the ability to obtain financing on favorable terms, 
which can be affected by various factors, including credit ratings, interest rate fluctuations, 
compliance with debt covenants and conditions and general market and economic conditions;

• Credit ratings of the Duke Energy Registrants may be different from what is expected;
• Declines in the market prices of equity and fixed-income securities and resultant cash 
funding requirements for defined benefit pension plans, other post-retirement benefit 
plans and nuclear decommissioning trust funds;

• Construction and development risks associated with the completion of the Duke Energy 
Registrants’ capital investment projects, including risks related to financing, obtaining 
and complying with terms of permits, meeting construction budgets and schedules and 
satisfying operating and environmental performance standards, as well as the ability to 
recover costs from customers in a timely manner, or at all;

• Changes in rules for regional transmission organizations, including changes in rate 

designs and new and evolving capacity markets, and risks related to obligations created 
by the default of other participants;

• The ability to control operation and maintenance costs;
• The level of creditworthiness of counterparties to transactions;
• The ability to obtain adequate insurance at acceptable costs;
• Employee workforce factors, including the potential inability to attract and retain key 

15. 

EXHIBITS AND FINANCIAL STATEMENT SCHEDULES. . . . . . . . . . . . . . . . . . . . . . . .  222

personnel;

EXHIBIT INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  E-1

SIGNATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  E-28

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

This document includes forward-looking statements within the meaning of Section 27A of 
the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking 
statements are based on management’s beliefs and assumptions and can often be identified by 
terms and phrases that include “anticipate,” “believe,” “intend,” “estimate,” “expect,” “continue,” 
“should,” “could,” “may,” “plan,” “project,” “predict,” “will,” “potential,” “forecast,” “target,” 
“guidance,” “outlook” or other similar terminology. Various factors may cause actual results to be 
materially different than the suggested outcomes within forward-looking statements; accordingly, 
there is no assurance that such results will be realized. These factors include, but are not limited to:

• The impact of the COVID-19 pandemic;
• State, federal and foreign legislative and regulatory initiatives, including costs of 

compliance with existing and future environmental requirements, including those related 
to climate change, as well as rulings that affect cost and investment recovery or have an 
impact on rate structures or market prices;

• The extent and timing of costs and liabilities to comply with federal and state laws, 

regulations and legal requirements related to coal ash remediation, including amounts 
for required closure of certain ash impoundments, are uncertain and difficult to estimate;

• The ability of subsidiaries to pay dividends or distributions to Duke Energy Corporation 

holding company (the Parent);

• The performance of projects undertaken by our nonregulated businesses and the 

success of efforts to invest in and develop new opportunities;

• The effect of accounting pronouncements issued periodically by accounting standard-

setting bodies;

• The impact of United States tax legislation to our financial condition, results of 

operations or cash flows and our credit ratings; 

• The impacts from potential impairments of goodwill or equity method investment 

carrying values; and

• The ability to implement our business strategy, including enhancing existing technology 

systems.
Additional risks and uncertainties are identified and discussed in the Duke Energy 

Registrants’ reports filed with the SEC and available at the SEC’s website at sec.gov. In light 
of these risks, uncertainties and assumptions, the events described in the forward-looking 
statements might not occur or might occur to a different extent or at a different time than 
described. Forward-looking statements speak only as of the date they are made and the Duke 
Energy Registrants expressly disclaim an obligation to publicly update or revise any forward-
looking statements, whether as a result of new information, future events or otherwise.

 
 
Glossary of Terms 

The following terms or acronyms used in this Form 10-K are defined below:

Term or Acronym 

Definition

Term or Acronym 

Definition

2013 Settlement . . . . . . . . . . . . . .   Revised and Restated Stipulation and Settlement 

DEFR . . . . . . . . . . . . . . . . . . . . . . .  Duke Energy Florida Receivables, LLC

Agreement approved in November 2013 
among Duke Energy Florida, the Florida 
Office of Public Counsel and other customer 
advocates

2017 Settlement . . . . . . . . . . . . . .   Second Revised and Restated Settlement 

Agreement in 2017 among Duke Energy 
Florida, the Florida Office of Public Counsel 
and other customer advocates, which 
replaces and supplants the 2013 Settlement

ACE . . . . . . . . . . . . . . . . . . . . . . . .  Affordable Clean Energy

ACP . . . . . . . . . . . . . . . . . . . . . . . .   Atlantic Coast Pipeline, LLC, a limited liability 

company owned by Dominion, Duke Energy 
and Southern Company Gas

Deloitte . . . . . . . . . . . . . . . . . . . . .   Deloitte & Touche LLP, and the member 

firms of Deloitte Touche Tohmatsu and their 
respective affiliates

DEPR. . . . . . . . . . . . . . . . . . . . . . .  Duke Energy Progress Receivables, LLC

DERF . . . . . . . . . . . . . . . . . . . . . . .   Duke Energy Receivables Finance Company, 

LLC

DOE . . . . . . . . . . . . . . . . . . . . . . . .  U.S. Department of Energy

Dominion. . . . . . . . . . . . . . . . . . . .  Dominion Energy, Inc.

Dth  . . . . . . . . . . . . . . . . . . . . . . . .  Dekatherms

Duke Energy. . . . . . . . . . . . . . . . . .   Duke Energy Corporation (collectively with its 

subsidiaries)

ACP pipeline  . . . . . . . . . . . . . . . . .   The approximately 600-mile canceled 

Duke Energy Carolinas. . . . . . . . . .  Duke Energy Carolinas, LLC

interstate natural gas pipeline

Duke Energy Florida . . . . . . . . . . . .  Duke Energy Florida, LLC

AFUDC. . . . . . . . . . . . . . . . . . . . . .  Allowance for funds used during construction

Duke Energy Indiana . . . . . . . . . . .  Duke Energy Indiana, LLC

AFS . . . . . . . . . . . . . . . . . . . . . . . .  Available for Sale

Duke Energy Kentucky . . . . . . . . . .  Duke Energy Kentucky, Inc.

AMI . . . . . . . . . . . . . . . . . . . . . . . .  Advanced Metering Infrastructure

Duke Energy Ohio. . . . . . . . . . . . . .  Duke Energy Ohio, Inc.

AMT. . . . . . . . . . . . . . . . . . . . . . . .  Alternative Minimum Tax

Duke Energy Progress  . . . . . . . . . .  Duke Energy Progress, LLC

AOCI  . . . . . . . . . . . . . . . . . . . . . . .   Accumulated Other Comprehensive Income 
(Loss)

ARO. . . . . . . . . . . . . . . . . . . . . . . .  Asset Retirement Obligation

ATM. . . . . . . . . . . . . . . . . . . . . . . .  At-the-market

Audit Committee . . . . . . . . . . . . . .  Audit Committee of the Board of Directors

Beckjord  . . . . . . . . . . . . . . . . . . . .  Beckjord Generating Station

Belews Creek. . . . . . . . . . . . . . . . .  Belews Creek Steam Station

Bison. . . . . . . . . . . . . . . . . . . . . . .  Bison Insurance Company Limited

Board of Directors . . . . . . . . . . . . .  Duke Energy Board of Directors

Brunswick . . . . . . . . . . . . . . . . . . .  Brunswick Nuclear Plant

Cardinal. . . . . . . . . . . . . . . . . . . . .  Cardinal Pipeline Company, LLC

Catawba . . . . . . . . . . . . . . . . . . . .  Catawba Nuclear Station

CC . . . . . . . . . . . . . . . . . . . . . . . . .  Combined Cycle

CCR. . . . . . . . . . . . . . . . . . . . . . . .  Coal Combustion Residuals

Cinergy  . . . . . . . . . . . . . . . . . . . . .   Cinergy Corp. (collectively with its 

subsidiaries)

Citrus County CC . . . . . . . . . . . . . .  Citrus County Combined Cycle Facility 
CO2 . . . . . . . . . . . . . . . . . . . . . . . .  Carbon Dioxide
Coal Ash Act . . . . . . . . . . . . . . . . .   North Carolina Coal Ash Management Act of 
2014

the Company . . . . . . . . . . . . . . . . .  Duke Energy Corporation and its subsidiaries

Constitution. . . . . . . . . . . . . . . . . .  Constitution Pipeline Company, LLC

CPCN. . . . . . . . . . . . . . . . . . . . . . .   Certificate of Public Convenience and 

Necessity

CRC. . . . . . . . . . . . . . . . . . . . . . . .  Cinergy Receivables Company LLC

Crystal River Unit 3 . . . . . . . . . . . .  Crystal River Unit 3 Nuclear Plant

CT . . . . . . . . . . . . . . . . . . . . . . . . .  Combustion Turbine

CWA  . . . . . . . . . . . . . . . . . . . . . . .  Clean Water Act

DATC . . . . . . . . . . . . . . . . . . . . . . .  Duke-American Transmission Company, LLC

D.C. Circuit Court. . . . . . . . . . . . . .   U.S. Court of Appeals for the District of 

Columbia

Duke Energy Registrants  . . . . . . . .   Duke Energy, Duke Energy Carolinas, Progress 

Energy, Duke Energy Progress, Duke Energy 
Florida, Duke Energy Ohio, Duke Energy 
Indiana and Piedmont

East Bend . . . . . . . . . . . . . . . . . . .  East Bend Generating Station

EE . . . . . . . . . . . . . . . . . . . . . . . . .  Energy efficiency

EPA . . . . . . . . . . . . . . . . . . . . . . . .  U.S. Environmental Protection Agency

EPC . . . . . . . . . . . . . . . . . . . . . . . .   Engineering, Procurement and Construction 

agreement

EPS . . . . . . . . . . . . . . . . . . . . . . . .  Earnings Per Share

ETR . . . . . . . . . . . . . . . . . . . . . . . .  Effective tax rate

Exchange Act. . . . . . . . . . . . . . . . .  Securities Exchange Act of 1934

FASB . . . . . . . . . . . . . . . . . . . . . . .  Financial Accounting Standards Board

FERC . . . . . . . . . . . . . . . . . . . . . . .  Federal Energy Regulatory Commission

FES . . . . . . . . . . . . . . . . . . . . . . . .  FirstEnergy Solutions Corp.

Form S-3. . . . . . . . . . . . . . . . . . . .  Registration statement

FPSC . . . . . . . . . . . . . . . . . . . . . . .  Florida Public Service Commission

FTR . . . . . . . . . . . . . . . . . . . . . . . .  Financial transmission rights

FV-NI . . . . . . . . . . . . . . . . . . . . . . .  Fair value through net income

GAAP . . . . . . . . . . . . . . . . . . . . . . .   Generally Accepted Accounting Principles in 

the United States

GAAP Reported EPS . . . . . . . . . . . .   Basic EPS Available to Duke Energy 

Corporation common stockholders

GHG. . . . . . . . . . . . . . . . . . . . . . . .  Greenhouse Gas

GIC  . . . . . . . . . . . . . . . . . . . . . . . .  GIC Private Limited

GWh  . . . . . . . . . . . . . . . . . . . . . . .  Gigawatt-hour

Hardy Storage . . . . . . . . . . . . . . . .  Hardy Storage Company, LLC

Harris  . . . . . . . . . . . . . . . . . . . . . .  Shearon Harris Nuclear Plant

HLBV . . . . . . . . . . . . . . . . . . . . . . .  Hypothetical Liquidation at Book Value

IGCC . . . . . . . . . . . . . . . . . . . . . . .  Integrated Gasification Combined Cycle

IMPA . . . . . . . . . . . . . . . . . . . . . . .  Indiana Municipal Power Agency

Term or Acronym 

Definition 

Term or Acronym 

Definition

IMR . . . . . . . . . . . . . . . . . . . . . . . .  Integrity Management Rider

Pioneer  . . . . . . . . . . . . . . . . . . . . .  Pioneer Transmission, LLC

IRP  . . . . . . . . . . . . . . . . . . . . . . . .  Integrated Resource Plans

PJM . . . . . . . . . . . . . . . . . . . . . . . .  PJM Interconnection, LLC

IRS  . . . . . . . . . . . . . . . . . . . . . . . .  Internal Revenue Service

PMPA. . . . . . . . . . . . . . . . . . . . . . .  Piedmont Municipal Power Agency

ISO  . . . . . . . . . . . . . . . . . . . . . . . .  Independent System Operator

PISCC  . . . . . . . . . . . . . . . . . . . . . .  Post-in-service carrying costs

ITC. . . . . . . . . . . . . . . . . . . . . . . . .  Investment Tax Credit

PPA . . . . . . . . . . . . . . . . . . . . . . . .  Purchase Power Agreement

IURC . . . . . . . . . . . . . . . . . . . . . . .  Indiana Utility Regulatory Commission

Progress Energy. . . . . . . . . . . . . . .  Progress Energy, Inc.

Investment Trusts  . . . . . . . . . . . . .   Grantor trusts of Duke Energy Progress, Duke 

PSCSC. . . . . . . . . . . . . . . . . . . . . .  Public Service Commission of South Carolina

Energy Florida and Duke Energy Indiana

KO Transmission  . . . . . . . . . . . . . .  KO Transmission Company

KPSC . . . . . . . . . . . . . . . . . . . . . . .  Kentucky Public Service Commission

LIBOR  . . . . . . . . . . . . . . . . . . . . . .  London Interbank Offered Rate

LLC . . . . . . . . . . . . . . . . . . . . . . . .  Limited Liability Company

McGuire. . . . . . . . . . . . . . . . . . . . .  McGuire Nuclear Station

MGP  . . . . . . . . . . . . . . . . . . . . . . .  Manufactured gas plant

PTC . . . . . . . . . . . . . . . . . . . . . . . .  Production Tax Credits

PUCO. . . . . . . . . . . . . . . . . . . . . . .  Public Utilities Commission of Ohio

PURPA. . . . . . . . . . . . . . . . . . . . . .  Public Utility Regulatory Policies Act of 1978

QF . . . . . . . . . . . . . . . . . . . . . . . . .  Qualifying Facility

REC . . . . . . . . . . . . . . . . . . . . . . . .  Renewable Energy Certificate

Relative TSR  . . . . . . . . . . . . . . . . .   TSR of Duke Energy stock relative to a 

predefined peer group

MISO . . . . . . . . . . . . . . . . . . . . . . .  Midcontinent Independent System Operator, Inc.

Robinson . . . . . . . . . . . . . . . . . . . .  Robinson Nuclear Plant

MMBtu  . . . . . . . . . . . . . . . . . . . . .  Million British Thermal Unit

ROU. . . . . . . . . . . . . . . . . . . . . . . .  Right-of-use

MTBE. . . . . . . . . . . . . . . . . . . . . . .  Methyl tertiary butyl ether

RSU. . . . . . . . . . . . . . . . . . . . . . . .  Restricted Stock Unit

MW . . . . . . . . . . . . . . . . . . . . . . . .  Megawatt

MWh . . . . . . . . . . . . . . . . . . . . . . .  Megawatt-hour

NCDEQ  . . . . . . . . . . . . . . . . . . . . .   North Carolina Department of Environmental 
Quality

NCEMC . . . . . . . . . . . . . . . . . . . . .  North Carolina Electric Membership Corporation

NCEMPA  . . . . . . . . . . . . . . . . . . . .  North Carolina Eastern Municipal Power Agency

NCUC  . . . . . . . . . . . . . . . . . . . . . .  North Carolina Utilities Commission

NDTF . . . . . . . . . . . . . . . . . . . . . . .  Nuclear decommissioning trust funds

New Source Review . . . . . . . . . . . .   Clean Air Act program that requires industrial 

facilities to install modern pollution control 
equipment when they are built or when making 
a change that increases emissions significantly

NMC  . . . . . . . . . . . . . . . . . . . . . . .  National Methanol Company

NOL . . . . . . . . . . . . . . . . . . . . . . . .  Net operating loss

NPNS. . . . . . . . . . . . . . . . . . . . . . .  Normal purchase/normal sale

NRC. . . . . . . . . . . . . . . . . . . . . . . .  U.S. Nuclear Regulatory Commission

NYSE . . . . . . . . . . . . . . . . . . . . . . .  New York Stock Exchange

Oconee  . . . . . . . . . . . . . . . . . . . . .  Oconee Nuclear Station

OPEB. . . . . . . . . . . . . . . . . . . . . . .  Other Post-Retirement Benefit Obligations

ORS . . . . . . . . . . . . . . . . . . . . . . . .  Office of Regulatory Staff

OTTI. . . . . . . . . . . . . . . . . . . . . . . .  Other-than-temporary impairment

OVEC . . . . . . . . . . . . . . . . . . . . . . .  Ohio Valley Electric Corporation

the Parent . . . . . . . . . . . . . . . . . . .  Duke Energy Corporation holding company

PGA . . . . . . . . . . . . . . . . . . . . . . . .  Purchased Gas Adjustments

PHMSA  . . . . . . . . . . . . . . . . . . . . .   Pipeline and Hazardous Materials Safety 

Administration

Piedmont . . . . . . . . . . . . . . . . . . . .  Piedmont Natural Gas Company, Inc.

Pine Needle . . . . . . . . . . . . . . . . . .  Pine Needle LNG Company, LLC

RTO . . . . . . . . . . . . . . . . . . . . . . . .  Regional Transmission Organization

Sabal Trail . . . . . . . . . . . . . . . . . . .  Sabal Trail Transmission, LLC

SAFSTOR . . . . . . . . . . . . . . . . . . . .   A method of decommissioning in which a 

nuclear facility is placed and maintained in a 
condition that allows the facility to be safely 
stored and subsequently decontaminated to 
levels that permit release for unrestricted use

SEC . . . . . . . . . . . . . . . . . . . . . . . .  Securities and Exchange Commission

SELC . . . . . . . . . . . . . . . . . . . . . . .  Southern Environmental Law Center

Spectra Capital . . . . . . . . . . . . . . .  Spectra Energy Capital, LLC

S&P . . . . . . . . . . . . . . . . . . . . . . . .  Standard & Poor’s Rating Services

State utility commissions. . . . . . . .   NCUC, PSCSC, FPSC, PUCO, IURC, KPSC and 

TPUC (Collectively)

State electric utility commissions . . .   NCUC, PSCSC, FPSC, PUCO, IURC and KPSC 

(Collectively)

State gas utility commissions  . . . .   NCUC, PSCSC, PUCO, TPUC and KPSC 

(Collectively)

Subsidiary Registrants. . . . . . . . . .   Duke Energy Carolinas, Progress Energy, Duke 

Energy Progress, Duke Energy Florida, Duke 
Energy Ohio, Duke Energy Indiana and Piedmont

Sutton . . . . . . . . . . . . . . . . . . . . . .  L.V. Sutton Combined Cycle Plant

the Tax Act. . . . . . . . . . . . . . . . . . .  Tax Cuts and Jobs Act

TPUC . . . . . . . . . . . . . . . . . . . . . . .  Tennessee Public Utility Commission

TSR . . . . . . . . . . . . . . . . . . . . . . . .  Total shareholder return

U.S. . . . . . . . . . . . . . . . . . . . . . . . .  United States

VIE. . . . . . . . . . . . . . . . . . . . . . . . .  Variable Interest Entity

WACC  . . . . . . . . . . . . . . . . . . . . . .  Weighted Average Cost of Capital

W.S. Lee CC . . . . . . . . . . . . . . . . . .  William States Lee Combined Cycle Facility 

WVPA. . . . . . . . . . . . . . . . . . . . . . .  Wabash Valley Power Association, Inc.

territory is approximately 91,000 square miles across six states with a total 
estimated population of 25 million people. The operations include electricity 
sold wholesale to municipalities, electric cooperative utilities and other load-
serving entities. Electric Utilities and Infrastructure is also a joint owner in 
certain electric transmission projects. Electric Utilities and Infrastructure has 
a 50% ownership interest in DATC, a partnership with American Transmission 
Company, formed to design, build and operate transmission infrastructure. 
DATC owns 72% of the transmission service rights to Path 15, an 84-mile 
transmission line in central California. Electric Utilities and Infrastructure also 
has a 50% ownership interest in Pioneer, which builds, owns and operates 
electric transmission facilities in North America. The following map shows the 
service territory for Electric Utilities and Infrastructure as of December 31, 2020.

ITEM 1. BUSINESS

DUKE ENERGY

General

Duke Energy was incorporated on May 3, 2005, and is an energy company 

headquartered in Charlotte, North Carolina, subject to regulation by the FERC 
and other regulatory agencies listed below. Duke Energy operates in the U.S. 
primarily through its direct and indirect subsidiaries. Certain Duke Energy 
subsidiaries are also Subsidiary Registrants, including Duke Energy Carolinas, 
Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy 
Ohio, Duke Energy Indiana and Piedmont. When discussing Duke Energy’s 
consolidated financial information, it necessarily includes the results of its 
separate Subsidiary Registrants, which along with Duke Energy, are collectively 
referred to as the Duke Energy Registrants.

The Duke Energy Registrants electronically file reports with the SEC, 
including Annual Reports on Form 10-K, quarterly reports on Form 10-Q, current 
reports on Form 8-K, proxy statements and amendments to such reports.
The SEC maintains an internet site that contains reports, proxy and 
information statements and other information regarding issuers that file 
electronically with the SEC at sec.gov. Additionally, information about the Duke 
Energy Registrants, including reports filed with the SEC, is available through 
Duke Energy’s website at duke-energy.com. Such reports are accessible at no 
charge and are made available as soon as reasonably practicable after such 
material is filed with or furnished to the SEC.

Business Segments

Duke Energy’s segment structure includes three reportable business 
segments: Electric Utilities and Infrastructure, Gas Utilities and Infrastructure 
and Commercial Renewables. The remainder of Duke Energy’s operations is 
presented as Other. Duke Energy’s chief operating decision-maker routinely 
reviews financial information about each of these business segments in 
deciding how to allocate resources and evaluate the performance of the 
business. For additional information on each of these business segments, 
including financial and geographic information, see Note 2 to the Consolidated 
Financial Statements, “Business Segments.” The following sections describe the 
business and operations of each of Duke Energy’s business segments, as well 
as Other.

ELECTRIC UTILITIES AND INFRASTRUCTURE

Electric Utilities and Infrastructure conducts operations primarily through 

the regulated public utilities of Duke Energy Carolinas, Duke Energy Progress, 
Duke Energy Florida, Duke Energy Indiana and Duke Energy Ohio. Electric 
Utilities and Infrastructure provides retail electric service through the generation, 
transmission, distribution and sale of electricity to approximately 7.9 million 
customers within the Southeast and Midwest regions of the U.S. The service 

5

PART IThe electric operations and investments in projects are subject to the rules and regulations of the FERC, the NRC, the NCUC, the PSCSC, the FPSC, the IURC, the 

PUCO and the KPSC.

The following table represents the distribution of GWh billed sales by customer class for the year ended December 31, 2020.

Residential

General service

Industrial

Total retail sales

Wholesale and other sales

Total sales

Duke
Energy
Carolinas

Duke 
Energy 
Progress

Duke 
Energy 
Florida

Duke 
Energy 
Ohio

Duke 
Energy 
Indiana

33% 

33%

23%

89%

11%

27%

22%

16%

65%

35%

51%

35%

7%

93%

7%

38%

37%

23%

98%

2%

30%

25%

31%

86%

14%

100%

100%

100%

100%

100%

The number of residential and general service customers within the 
Electric Utilities and Infrastructure service territory is expected to increase over 
time. Sales growth is expected within the service territory but continues to be 
influenced by adoption of energy efficiencies and self-generation. Residential 
sales increased in 2020 compared to 2019 due to customer growth and the 
stay-at-home orders as a result of the COVID-19 pandemic. Meanwhile, sales 
for general service and industrial customers decreased in 2020 due to the 
impacts of the COVID-19 pandemic. These trends in residential, general service 
and industrial sales may continue in the short term but are not expected to 
be permanent. It is still expected that the continued adoption of more efficient 
housing and appliances will have a negative impact on average usage per 
residential customer over time. 

Seasonality and the Impact of Weather

Revenues and costs are influenced by seasonal weather patterns. Peak 
sales of electricity occur during the summer and winter months, which results 
in higher revenue and cash flows during these periods. By contrast, lower sales 
of electricity occur during the spring and fall, allowing for scheduled plant 
maintenance. Residential and general service customers are more impacted by 
weather than industrial customers. Estimated weather impacts are based on 
actual current period weather compared to normal weather conditions. Normal 
weather conditions are defined as the long-term average of actual historical 
weather conditions.

The estimated impact of weather on earnings is based on the temperature 

variances from a normal condition and customers’ historic usage patterns. 
The methodology used to estimate the impact of weather does not consider all 
variables that may impact customer response to weather conditions such as 
humidity in the summer or wind chill in the winter. The precision of this estimate 
may also be impacted by applying long-term weather trends to shorter-term 
periods.

Heating degree days measure the variation in weather based on the extent 

the average daily temperature falls below a base temperature. Cooling degree 
days measure the variation in weather based on the extent the average daily 
temperature rises above the base temperature. Each degree of temperature 
below the base temperature counts as one heating degree day and each degree 
of temperature above the base temperature counts as one cooling degree day.

Competition

Retail

Electric Utilities and Infrastructure’s businesses operate as the sole 
supplier of electricity within their service territories, with the exception of Ohio, 
which has a competitive electricity supply market for generation service. Electric 
Utilities and Infrastructure owns and operates facilities necessary to generate, 
transmit, distribute and sell electricity. Services are priced by state commission-
approved rates designed to include the costs of providing these services and 

a reasonable return on invested capital. This regulatory policy is intended to 
provide safe and reliable electricity at fair prices. 

In Ohio, Electric Utilities and Infrastructure conducts competitive auctions 

for electricity supply. The cost of energy purchased through these auctions is 
recovered from retail customers. Electric Utilities and Infrastructure earns retail 
margin in Ohio on the transmission and distribution of electricity, but not on the 
cost of the underlying energy.

Competition in the regulated electric distribution business is primarily 

from the development and deployment of alternative energy sources including 
on-site generation from industrial customers and distributed generation, such 
as private solar, at residential, general service and/or industrial customer sites.

Wholesale

Duke Energy competes with other utilities and merchant generators for 

bulk power sales, sales to municipalities and cooperatives and wholesale 
transactions under primarily cost-based contracts approved by FERC. The 
principal factors in competing for these sales are availability of capacity and 
power, reliability of service and price. Prices are influenced primarily by market 
conditions and fuel costs.

Increased competition in the wholesale electric utility industry and 
the availability of transmission access could affect Electric Utilities and 
Infrastructure’s load forecasts, plans for power supply and wholesale energy 
sales and related revenues. Wholesale energy sales will be impacted by the 
extent to which additional generation is available to sell to the wholesale market 
and the ability of Electric Utilities and Infrastructure to attract new customers 
and to retain existing customers.

Energy Capacity and Resources

Electric Utilities and Infrastructure owns approximately 50,807 MW of 

generation capacity. For additional information on owned generation facilities, 
see Item 2, “Properties.”

Energy and capacity are also supplied through contracts with other 
generators and purchased on the open market. Factors that could cause 
Electric Utilities and Infrastructure to purchase power for its customers may 
include, but are not limited to, generating plant outages, extreme weather 
conditions, generation reliability, demand growth and price. Electric Utilities 
and Infrastructure has interconnections and arrangements with its neighboring 
utilities to facilitate planning, emergency assistance, sale and purchase of 
capacity and energy and reliability of power supply.

Electric Utilities and Infrastructure’s generation portfolio is a balanced mix 

of energy resources having different operating characteristics and fuel sources 
designed to provide energy at the lowest possible cost to meet its obligation to 
serve retail customers. All options, including owned generation resources and 
purchased power opportunities, are continually evaluated on a real-time basis 
to select and dispatch the lowest-cost resources available to meet system load 
requirements.

6

PART ISources of Electricity

Electric Utilities and Infrastructure relies principally on natural gas, nuclear fuel and coal for its generation of electricity. The following table lists sources of 

electricity and fuel costs for the three years ended December 31, 2020.

Natural gas and oil(a)

Nuclear(a)

Coal(a)

All fuels (cost-based on weighted average)(a)

Hydroelectric and solar(b)

Total generation

Purchased power and net interchange

Total sources of energy

Cost of Delivered Fuel per Net
Kilowatt-hour Generated (Cents)

2020
2.55 

0.58 

2.99 

1.91 

2019
2.96 

0.60 

3.08 

2.14 

2018
3.57 

0.50 

2.82 

2.29 

Generation by Source

2020
31.3 %

29.6 %

18.1 %

79.0 %
1.9 %

80.9 %

19.1 %

2019
29.2 %

28.6 %

21.6 %

79.4 %
1.2 %

80.6 %

19.4 %

2018
26.2 %

26.0 %

24.4 %

76.6 %
1.3 %

77.9 %

22.1 %

100.0 %

100.0 %

100.0 %

(a)  Statistics related to all fuels reflect Electric Utilities and Infrastructure’s ownership interest in jointly owned generation facilities. 
(b)  Generating figures are net of output required to replenish pumped storage facilities during off-peak periods. 

Natural Gas and Fuel Oil

Natural gas and fuel oil supply, transportation and storage for Electric 

Utilities and Infrastructure’s generation fleet is purchased under standard 
industry agreements from various suppliers, including Piedmont. Natural gas 
supply agreements typically provide for a percentage of forecasted burns 
being procured over time, with varied expiration dates. Electric Utilities and 
Infrastructure believes it has access to an adequate supply of natural gas and 
fuel oil for the reasonably foreseeable future.

Electric Utilities and Infrastructure has certain dual-fuel generating 

facilities that can operate utilizing both natural gas and fuel oil. The cost of 
Electric Utilities and Infrastructure’s natural gas and fuel oil is fixed price 
or determined by published market prices as reported in certain industry 
publications, plus any transportation and freight costs. Duke Energy Carolinas, 
Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana use 
derivative instruments to manage a portion of their exposure to price 
fluctuations for natural gas. For Duke Energy Florida, there is currently an 
agreed to moratorium with the FPSC on future hedging of natural gas prices. 

Electric Utilities and Infrastructure has firm interstate and intrastate 

natural gas transportation agreements and storage agreements in place 
to support generation needed for load requirements. Electric Utilities and 
Infrastructure may purchase additional shorter-term natural gas transportation 
and utilize natural gas interruptible transportation agreements to support 
generation needed for load requirements. The Electric Utilities and Infrastructure 
natural gas plants are served by various supply zones and multiple pipelines.

Nuclear

The industrial processes for producing nuclear generating fuel generally 
involve the mining and milling of uranium ore to produce uranium concentrates 
and services to convert, enrich and fabricate fuel assemblies.

Electric Utilities and Infrastructure has contracted for uranium materials 

and services to fuel its nuclear reactors. Uranium concentrates, conversion 
services and enrichment services are primarily met through a diversified portfolio 
of long-term supply contracts. The contracts are diversified by supplier, country 
of origin and pricing. Electric Utilities and Infrastructure staggers its contracting 
so that its portfolio of long-term contracts covers the majority of its fuel 
requirements in the near term and decreasing portions of its fuel requirements 
over time thereafter. Near-term requirements not met by long-term supply 
contracts have been and are expected to be fulfilled with spot market purchases. 
Due to the technical complexities of changing suppliers of fuel fabrication 
services, Electric Utilities and Infrastructure generally source these services to a 
single domestic supplier on a plant-by-plant basis using multiyear contracts.

Electric Utilities and Infrastructure has entered into fuel contracts that 
cover 100% of its uranium concentrates and conversion services through at 
least 2021, 100% of its enrichment services through at least 2022, and 100% 
of its fabrication services requirements for these plants through at least 2027. 
For future requirements not already covered under long-term contracts, Electric 
Utilities and Infrastructure believes it will be able to renew contracts as they 
expire or enter into similar contractual arrangements with other suppliers of 
nuclear fuel materials and services.

Coal

Electric Utilities and Infrastructure meets its coal demand through a 
portfolio of long-term purchase contracts and short-term spot market purchase 
agreements. Large amounts of coal are purchased under long-term contracts 
with mining operators who mine both underground and at the surface. 
Electric Utilities and Infrastructure uses spot market purchases to meet coal 
requirements not met by long-term contracts. Expiration dates for its long-term 
contracts, which may have various price adjustment provisions and market 
reopeners, range from 2021 to 2023 for Duke Energy Carolinas and Duke 
Energy Progress and 2021 to 2025 for Duke Energy Indiana. Expiration dates 
for Duke Energy Florida and Duke Energy Ohio are in 2021. Electric Utilities 
and Infrastructure expects to renew these contracts or enter into similar 
contracts with other suppliers as existing contracts expire, though prices will 
fluctuate over time as coal markets change. Electric Utilities and Infrastructure 
has an adequate supply of coal under contract to meet its risk management 
guidelines regarding projected future consumption. As a result of volatility in 
natural gas prices and the associated impacts on coal-fired dispatch within the 
generation fleet, coal inventories will continue to fluctuate. Electric Utilities and 
Infrastructure continues to actively manage its portfolio and has worked with 
suppliers to obtain increased flexibility in its coal contracts. 

Coal purchased for the Carolinas is primarily produced from mines in 
Central Appalachia, Northern Appalachia and the Illinois Basin. Coal purchased 
for Florida is primarily produced from mines in the Illinois Basin. Coal purchased 
for Kentucky is produced from mines along the Ohio River in Illinois, Ohio, 
West Virginia and Pennsylvania. Coal purchased for Indiana is primarily 
produced in Indiana and Illinois. There are adequate domestic coal reserves to 
serve Electric Utilities and Infrastructure’s coal generation needs through end 
of life. The current average sulfur content of coal purchased by Electric Utilities 
and Infrastructure is between 1.5% and 2% for Duke Energy Carolinas and 
Duke Energy Progress, and between 2.5% and 3% for Duke Energy Florida, 
Duke Energy Ohio and Duke Energy Indiana. Electric Utilities and Infrastructure’s 
environmental controls, in combination with the use of sulfur dioxide (SO2) 
emission allowances, enable Electric Utilities and Infrastructure to satisfy 
current SO2 emission limitations for its existing facilities.

7

PART IPurchased Power

Electric Utilities and Infrastructure purchases a portion of its capacity 
and system requirements through purchase obligations, leases and purchase 
capacity contracts. Electric Utilities and Infrastructure believes it can obtain 

The following table summarizes purchased power for the previous three years:

adequate purchased power capacity to meet future system load needs. However, 
during periods of high demand, the price and availability of purchased power 
may be significantly affected.

Purchase obligations and leases (in millions of MWh)(a)

Purchase capacity under contract (in MW)(b)

(a)  Represents approximately 13% of total system requirements for 2020, 14% for 2019 and 7% for 2018.
(b)  For 2020, 2019 and 2018, these agreements include approximately 412 MW of firm capacity under contract by Duke Energy Florida with QFs.

2020

32.7 

4,716 

2019

34.8 

4,238 

2018

21.3 

4,025 

Inventory

Electric Utilities and Infrastructure must maintain an adequate stock 

of fuel and materials and supplies in order to ensure continuous operation of 
generating facilities and reliable delivery to customers. As of December 31, 2020, 
the inventory balance for Electric Utilities and Infrastructure was approximately 
$3 billion. For additional information on inventory, see Note 1 to the Consolidated 
Financial Statements, “Summary of Significant Accounting Policies.”

Ash Basin Management

During 2015, EPA issued regulations related to the management of CCR 

from power plants. These regulations classify CCR as nonhazardous waste 
under the Resource Conservation and Recovery Act (RCRA) and apply to electric 
generating sites with new and existing landfills and new and existing surface 
impoundments and establishes requirements regarding landfill design, structural 
integrity design and assessment criteria for surface impoundments, groundwater 
monitoring, protection and remedial procedures and other operational and 
reporting procedures for the disposal and management of CCR. In addition to 
the federal regulations, CCR landfills and surface impoundments (ash basins or 
impoundments) will continue to be regulated by existing state laws, regulations 
and permits, such as the Coal Ash Management Act in North Carolina. 

Electric Utilities and Infrastructure has and will periodically submit to 
applicable authorities required site-specific coal ash impoundment remediation 
or closure plans. Closure plans and all associated permits will receive necessary 
approvals before any work can begin. Closure activities have begun in all of 
Duke Energy’s jurisdictions. Excavation began in 2015 at the four sites specified 
as high priority by the NC Coal Ash Management Act and at the W.S. Lee Steam 
Station site in South Carolina in connection with other legal requirements. 
Excavation at these sites involves movement of CCR materials to off-site 
locations for use as structural fill, to appropriate engineered off-site or on-site 
lined landfills or for reuse in an approved beneficial application. Duke Energy has 
completed excavation of coal ash at three of the four high-priority NC sites. At 
other sites where CCR management is required, planning and closure methods 
have been studied and factored into the estimated retirement and management 
costs, and closure activities have commenced.

The EPA CCR rule and the NC Coal Ash Management Act leave the 
decision on cost recovery determinations related to closure of coal ash surface 
impoundments to the normal ratemaking processes before utility regulatory 
commissions. Duke Energy’s electric utilities have included compliance 
costs associated with federal and state requirements in their respective rate 
proceedings. In January 2021, Duke Energy Carolinas and Duke Energy Progress 
reached a settlement agreement on recovery of coal ash costs, which is subject 
to review and approval of the NCUC. During 2017, Duke Energy Carolinas’ and 
Duke Energy Progress’ wholesale contracts were amended to include the recovery 
of expenditures related to AROs for the closure of coal ash basins. The amended 
contracts have retail disallowance parity or provisions limiting challenges to 
CCR cost recovery actions at FERC. FERC approved the amended wholesale rate 
schedules in 2017. For additional information on the ash basins and recovery, 
see Item 7, “Other Matters” and Notes 3, 4 and 9 to the Consolidated Financial 
Statements, “Regulatory Matters,” “Commitments and Contingencies” and “Asset 
Retirement Obligations,” respectively. 

Nuclear Matters

Duke Energy owns, wholly or partially, 11 operating nuclear reactors 
located at six operating stations. The Crystal River Unit 3 permanently ceased 
operation in February 2013. Nuclear insurance includes: nuclear liability 
coverage; property damage coverage; nuclear accident decontamination and 
premature decommissioning coverage; and accidental outage coverage for 
losses in the event of a major accidental outage. Joint owners reimburse Duke 
Energy for certain expenses associated with nuclear insurance in accordance 
with joint owner agreements. The Price-Anderson Act requires plant owners to 
provide for public nuclear liability claims resulting from nuclear incidents to the 
maximum total financial protection liability, which is approximately $13.8 billion. 
For additional information on nuclear insurance, see Note 4 to the Consolidated 
Financial Statements, “Commitments and Contingencies.”

Duke Energy has a significant future financial commitment to dispose of 

spent nuclear fuel and decommission and decontaminate each plant safely. The 
NCUC, PSCSC and FPSC require Duke Energy to update their cost estimates for 
decommissioning their nuclear plants every five years.

The following table summarizes the fair value of NDTF investments and the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs 
are stated in 2018 or 2019 dollars, depending on the year of the cost study, and include costs to decommission plant components not subject to radioactive contamination.

(in millions)
Duke Energy
Duke Energy Carolinas(b)(c)
Duke Energy Progress(d)
Duke Energy Florida(e)

NDTF(a)

$

December 31, 2020
9,114 
4,977 
3,500 
637 

$ 

December 31, 2019
8,140  
4,359 
3,047 
734 

$

Decommissioning
Costs(a)
9,105 
4,365 
4,181 
559 

Year of  
Cost Study
2018 or 2019
2018
2019
N/A

(a)  Amounts for Progress Energy equal the sum of Duke Energy Progress and Duke Energy Florida.
(b)  Decommissioning cost for Duke Energy Carolinas reflects its ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors.
(c)  Duke Energy Carolinas’ site-specific nuclear decommissioning cost study completed in 2018 was filed with the NCUC and PSCSC in 2019. A new funding study was also completed and filed with the NCUC and PSCSC in 2019.
(d)  Duke Energy Progress’ site-specific nuclear decommissioning cost study completed in 2019 was filed with the NCUC and PSCSC in March 2020. Duke Energy Progress also completed a funding study, which was filed with the 

NCUC and PSCSC in July 2020.

(e)  During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party rather than a 

cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. See Note 3 for more information.

8

PART IThe NCUC, PSCSC, FPSC and FERC have allowed Electric Utilities and 

Infrastructure to recover estimated decommissioning costs through retail and 
wholesale rates over the expected remaining service periods of their nuclear 
stations. Electric Utilities and Infrastructure believes the decommissioning 
costs being recovered through rates, when coupled with the existing fund 
balances and expected fund earnings, will be sufficient to provide for the 
cost of future decommissioning. For additional information, see Note 9 to the 
Consolidated Financial Statements, “Asset Retirement Obligations.”

The Nuclear Waste Policy Act of 1982 (as amended) provides the 
framework for development by the federal government of interim storage and 
permanent disposal facilities for high-level radioactive waste materials. The 
government has not yet developed a storage facility or disposal capacity, 
so Electric Utilities and Infrastructure will continue to store spent fuel on its 
reactor sites.

Under federal law, the DOE is responsible for the selection and 
construction of a facility for the permanent disposal of spent nuclear fuel 
and high-level radioactive waste. The DOE terminated the project to license 
and develop a geologic repository at Yucca Mountain, Nevada in 2010, and is 
currently taking no action to fulfill its responsibilities to dispose of spent fuel. 
Until the DOE begins to accept the spent nuclear fuel, Duke Energy 
Carolinas, Duke Energy Progress and Duke Energy Florida will continue to safely 
manage their spent nuclear fuel. Under current regulatory guidelines, Harris 
has sufficient storage capacity in its spent fuel pools through the expiration 
of its renewed operating license. With certain modifications and approvals by 
the NRC to expand the on-site dry cask storage facilities, spent nuclear fuel 
dry storage facilities will be sufficient to provide storage space of spent fuel 
through the expiration of the operating licenses, including any license renewals, 
for Brunswick, Catawba, McGuire, Oconee and Robinson. Crystal River Unit 3 
ceased operation in 2013 and was placed in a SAFSTOR condition in January 
2018. As of January 2018, all spent fuel at Crystal River Unit 3 has been 
transferred from the spent fuel pool to dry storage at an on-site independent 
spent fuel storage installation. During 2020, the NRC and the FPSC approved an 
agreement to transfer ownership of spent fuel for Crystal River Unit 3 to a third 
party. See Note 3 for more information.

The nuclear power industry faces uncertainties with respect to the cost 

and long-term availability of disposal sites for spent nuclear fuel and other 
radioactive waste, compliance with changing regulatory requirements, capital 
outlays for modifications and new plant construction. 

Electric Utilities and Infrastructure is subject to the jurisdiction of the NRC 

for the design, construction and operation of its nuclear generating facilities. 
The following table includes the current year of expiration of nuclear operating 
licenses for nuclear stations in operation. During 2019, Duke Energy announced 
its intention to seek 20-year operating license renewals for each of the reactors 
it operates in Duke Energy Carolinas and Duke Energy Progress. 

The NRC has acknowledged permanent cessation of operation and 
permanent removal of fuel from the reactor vessel at Crystal River Unit 3. 
Therefore, the license no longer authorizes operation of the reactor. For 
additional information on nuclear decommissioning activity, see Notes 3 and 
9 to the Consolidated Financial Statements, “Regulatory Matters” and “Asset 
Retirement Obligations,” respectively. 

Regulation

State

The state electric utility commissions approve rates for Duke Energy’s 
retail electric service within their respective states. The state electric utility 
commissions, to varying degrees, have authority over the construction and 
operation of Electric Utilities and Infrastructure’s generating facilities. CPCNs 
issued by the state electric utility commissions, as applicable, authorize Electric 
Utilities and Infrastructure to construct and operate its electric facilities and 
to sell electricity to retail and wholesale customers. Prior approval from the 
relevant state electric utility commission is required for the entities within 
Electric Utilities and Infrastructure to issue securities. The underlying concept 
of utility ratemaking is to set rates at a level that allows the utility to collect 
revenues equal to its cost of providing service plus earn a reasonable rate of 
return on its invested capital, including equity.

In addition to rates approved in base rate cases, each of the state electric 

utility commissions allow recovery of certain costs through various cost-
recovery clauses to the extent the respective commission determines in periodic 
hearings that such costs, including any past over or under-recovered costs, 
are prudent. 

Fuel, fuel-related costs and certain purchased power costs are eligible 

for recovery by Electric Utilities and Infrastructure. Electric Utilities and 
Infrastructure uses coal, hydroelectric, natural gas, oil, renewable generation 
and nuclear fuel to generate electricity, thereby maintaining a diverse fuel mix 
that helps mitigate the impact of cost increases in any one fuel. Due to the 
associated regulatory treatment and the method allowed for recovery, changes 
in fuel costs from year to year have no material impact on operating results of 
Electric Utilities and Infrastructure, unless a commission finds a portion of such 
costs to have been imprudent. However, delays between the expenditure for fuel 
costs and recovery from customers can adversely impact the timing of cash 
flows of Electric Utilities and Infrastructure.

Unit

Duke Energy Carolinas

Catawba Units 1 and 2

McGuire Unit 1

McGuire Unit 2

Oconee Units 1 and 2

Oconee Unit 3

Duke Energy Progress

Brunswick Unit 1

Brunswick Unit 2

Harris

Robinson

Year of Expiration

2043

2041

2043

2033

2034

2036

2034

2046

2030

9

PART IThe table below reflects significant electric rate case applications approved and effective in the past three years or applications currently pending approval.

Approved Rate Cases:
Duke Energy Indiana 2019 Indiana Rate Case(a)
Duke Energy Kentucky 2019 Kentucky Electric Rate Case
Duke Energy Carolinas 2018 South Carolina Rate Case
Duke Energy Progress 2018 South Carolina Rate Case
Duke Energy Ohio 2017 Ohio Electric Rate Case
Duke Energy Carolinas 2017 North Carolina Rate Case
Duke Energy Kentucky 2017 Kentucky Electric Rate Case
Duke Energy Progress 2017 North Carolina Rate Case

Pending Rate Cases:
Duke Energy Carolinas 2019 North Carolina Rate Case(b)
Duke Energy Progress 2019 North Carolina Rate Case(b)

Annual  
Increase 
(Decrease) 
(in millions)

Regulatory  
Body

Return on 
Equity

Equity 
Component of 
Capital Structure

Effective Date

IURC
KPSC
PSCSC
PSCSC
PUCO
NCUC
KPSC
NCUC

NCUC
NCUC

$

146
24 
45 
29 
(19)
(73)
8 
151 

$

291
464 

9.7% 
9.25%
9.5%
9.5%
9.84%
9.9%
9.725%
9.9%

10.3% 
10.3% 

53%
48.23%
53%
53%
50.75%
52%
49%
52%

53%
53%

7/30/2020
5/1/2020
6/1/2019
6/1/2019
1/2/2019
8/1/2018
5/1/2018
3/16/2018

8/1/2020
9/1/2020

(a)  Step 1 rates are approximately 75% of the total and became effective July 30, 2020. Step 2 rates are approximately 25% of the total rate case increase and will be implemented in mid-2021. Amounts exclude the Utility 

Receipt Tax amounts.

(b)  Partial Settlements were reached on July 31, 2020, which are subject to approval by the NCUC. Components of the partial settlements included a return of equity of 9.6% and a capital structure of 52% equity. These temporary 

rates went into effect August 24, 2020, for Duke Energy Carolinas and September 1, 2020, for Duke Energy Progress. A settlement was also reached, subject to approval by the NCUC, on coal ash cost recovery in January of 2021.

Energy Kentucky. The natural gas operations are subject to the rules and 
regulations of the NCUC, PSCSC, PUCO, KPSC, TPUC, PHMSA and the FERC. Gas 
Utilities and Infrastructure serves residential, commercial, industrial and power 
generation natural gas customers, including customers served by municipalities 
who are wholesale customers. Gas Utilities and Infrastructure has over 1.6 million 
customers, including 1.1 million customers located in North Carolina, South 
Carolina and Tennessee, and an additional 541,000 customers located within 
southwestern Ohio and northern Kentucky. In the Carolinas, Ohio and Kentucky, 
the service areas are comprised of numerous cities, towns and communities. In 
Tennessee, the service area is the metropolitan area of Nashville. The following 
map shows the service territory and investments in operating pipelines for Gas 
Utilities and Infrastructure as of December 31, 2020.

Additionally, in January 2021, Duke Energy Florida filed a settlement 

agreement with the FPSC that, if approved, will allow annual increases to its 
base rates at an agreed upon return on equity (“ROE”) band and includes a 
base rate stay-out provision through 2024, among other provisions. For more 
information on rate matters and other regulatory proceedings, see Note 3 to the 
Consolidated Financial Statements, “Regulatory Matters.”

Federal

The FERC approves Electric Utilities and Infrastructure’s cost-based 
rates for electric sales to certain power and transmission wholesale customers. 
Regulations of FERC and the state electric utility commissions govern access to 
regulated electric and other data by nonregulated entities and services provided 
between regulated and nonregulated energy affiliates. These regulations affect 
the activities of nonregulated affiliates with Electric Utilities and Infrastructure.

RTOs

PJM and MISO are the ISOs and FERC-approved RTOs for the regions 
in which Duke Energy Ohio and Duke Energy Indiana operate. PJM and MISO 
operate energy, capacity and other markets, and control the day-to-day 
operations of bulk power systems through central dispatch.

Duke Energy Ohio is a member of PJM and Duke Energy Indiana is a 
member of MISO. Transmission owners in these RTOs have turned over control 
of their transmission facilities and their transmission systems are currently 
under the dispatch control of the RTOs. Transmission service is provided on 
a regionwide, open-access basis using the transmission facilities of the RTO 
members at rates based on the costs of transmission service.

Environmental

Electric Utilities and Infrastructure is subject to the jurisdiction of the EPA 
and state and local environmental agencies. For a discussion of environmental 
regulation, see “Environmental Matters” in this section. See the “Other Matters” 
section of Management’s Discussion and Analysis for a discussion about 
potential Global Climate Change legislation and other EPA regulations under 
development and the potential impacts such legislation and regulation could 
have on Duke Energy’s operations.

GAS UTILITIES AND INFRASTRUCTURE 

Gas Utilities and Infrastructure conducts natural gas operations primarily 

through the regulated public utilities of Piedmont, Duke Energy Ohio and Duke 

10

PART IThe number of residential, commercial and industrial customers within 

the Gas Utilities and Infrastructure service territory is expected to increase 
over time. Average usage per residential customer is expected to remain flat or 
decline for the foreseeable future; however, decoupled rates in North Carolina 
and various rate design mechanisms in other jurisdictions partially mitigate the 
impact of the declining usage per customer on overall profitability. 

Gas Utilities and Infrastructure also owns, operates and has investments 

in various pipeline transmission and natural gas storage facilities. 

Natural Gas for Retail Distribution

Gas Utilities and Infrastructure is responsible for the distribution of 
natural gas to retail customers in its North Carolina, South Carolina, Tennessee, 
Ohio and Kentucky service territories. Gas Utilities and Infrastructure’s natural 
gas procurement strategy is to contract primarily with major and independent 
producers and marketers for natural gas supply. It also purchases a diverse 
portfolio of transportation and storage service from interstate pipelines. This 
strategy allows Gas Utilities and Infrastructure to assure reliable natural gas 
supply and transportation for its firm customers during peak winter conditions. 
When firm pipeline services or contracted natural gas supplies are temporarily 
not needed due to market demand fluctuations, Gas Utilities and Infrastructure 
may release these services and supplies in the secondary market under 
FERC-approved capacity release provisions or make wholesale secondary 
market sales. In 2020, firm supply purchase commitment agreements provided 
100% of the natural gas supply for both Piedmont and Duke Energy Ohio.

Impact of Weather

Gas Utilities and Infrastructure revenues are generally protected 
from the impact of weather fluctuations due to the regulatory mechanisms 
that are available in most service territories. In North Carolina, margin 
decoupling provides protection from both weather and other usage variations 
like conservation for residential and commercial customer classes. Margin 
decoupling provides a set revenue per customer independent of actual usage. 
In South Carolina, Tennessee and Kentucky, weather normalization adjusts 
revenues either up or down depending on how much warmer or colder than 
normal a given month has been. Weather normalization adjustments occur 
from November through March in South Carolina, from October through April 
in Tennessee and from November through April in Kentucky. Duke Energy Ohio 
collects most of its non-fuel revenue through a fixed monthly charge that 
is not impacted by usage fluctuations that result from weather changes or 
conservation.

Competition

Gas Utilities and Infrastructure’s businesses operate as the sole provider 

of natural gas service within their retail service territories. Gas Utilities 
and Infrastructure owns and operates facilities necessary to transport and 
distribute natural gas. Gas Utilities and Infrastructure earns retail margin on 
the transmission and distribution of natural gas and not on the cost of the 
underlying commodity. Services are priced by state commission-approved rates 
designed to include the costs of providing these services and a reasonable 
return on invested capital. This regulatory policy is intended to provide safe 
and reliable natural gas service at fair prices. 

In residential, commercial and industrial customer markets, natural 
gas distribution operations compete with other companies that supply energy, 
primarily electric companies, propane and fuel oil dealers, renewable energy 
providers and coal companies in relation to sources of energy for electric power 
plants, as well as nuclear energy. A significant competitive factor is price. Gas 
Utilities and Infrastructure’s primary product competition is with electricity 
for heating, water heating and cooking. Increases in the price of natural gas 
or decreases in the price of other energy sources could negatively impact 
competitive position by decreasing the price benefits of natural gas to the 
consumer. In the case of industrial customers, such as manufacturing plants, 
adverse economic or market conditions, including higher natural gas costs, could 

11

cause these customers to suspend business operations or to use alternative 
sources of energy in favor of energy sources with lower per-unit costs. 

Higher natural gas costs or decreases in the price of other energy sources 

may allow competition from alternative energy sources for applications that 
have traditionally used natural gas, encouraging some customers to move 
away from natural gas-fired equipment to equipment fueled by other energy 
sources. Competition between natural gas and other forms of energy is also 
based on efficiency, performance, reliability, safety and other non-price factors. 
Technological improvements in other energy sources and events that impair 
the public perception of the non-price attributes of natural gas could erode 
our competitive advantage. These factors in turn could decrease the demand 
for natural gas, impair our ability to attract new customers and cause existing 
customers to switch to other forms of energy or to bypass our systems in favor 
of alternative competitive sources. This could result in slow or no customer 
growth and could cause customers to reduce or cease using our product, 
thereby reducing our ability to make capital expenditures and otherwise grow 
our business, adversely affecting our earnings. 

Pipeline and Storage Investments

Duke Energy, through its Gas Utilities and Infrastructure segment, has 
a 7.5% equity ownership interest in Sabal Trail. Sabal Trail is a joint venture 
that owns the Sabal Trail Natural Gas Pipeline (Sabal Trail pipeline) to transport 
natural gas to Florida, regulated by FERC. The Sabal Trail Phase I mainline was 
placed into service in July 2017 and traverses Alabama, Georgia and Florida. 
The remaining lateral line to the Duke Energy Florida’s Citrus County CC was 
placed into service in March 2018. Phase II of Sabal Trail went into service 
in May 2020, adding approximately 200,000 Dth of capacity to the Sabal 
Trail pipeline.

Gas Utilities and Infrastructure has a 47% equity ownership interest 
in ACP, which planned to build the ACP pipeline, an approximately 600-mile 
interstate natural gas pipeline. The ACP pipeline was intended to transport 
diverse natural gas supplies into southeastern markets and would be regulated 
by FERC. Dominion Energy owns 53% of ACP and was contracted to construct 
and operate the ACP pipeline upon completion. On July 5, 2020, Dominion 
announced a sale of substantially all of its gas transmission and storage 
segment assets, which were critical to the ACP pipeline. Further, permitting 
delays and legal challenges had materially affected the timing and cost of the 
pipeline. As a result, Duke Energy determined that they would no longer invest 
in the construction of the ACP pipeline. For the year ended December 31, 2020, 
Duke Energy recorded $2.1 billion of costs related to ACP. 

Gas Utilities and Infrastructure has a 24% equity ownership interest in 
Constitution, an interstate pipeline development company formed to develop, 
construct, own and operate a 124-mile natural gas pipeline and related 
facilities, regulated by FERC. Constitution was slated to transport natural 
gas supplies from the Marcellus supply region in northern Pennsylvania to 
major northeastern markets. As of February 5, 2020, the Constitution partners 
formally resolved to initiate the dissolution of Constitution, and to terminate the 
Constitution Pipeline project.

Duke Energy, through its Gas Utilities and Infrastructure segment, has a 
21.49% equity ownership interest in Cardinal, an intrastate pipeline located in 
North Carolina regulated by the NCUC, a 45% equity ownership in Pine Needle, 
an interstate liquefied natural gas storage facility located in North Carolina and 
a 50% equity ownership interest in Hardy Storage, an underground interstate 
natural gas storage facility located in Hardy and Hampshire counties in West 
Virginia. Pine Needle and Hardy Storage are regulated by FERC.

KO Transmission Company (KO Transmission), a wholly owned subsidiary 
of Duke Energy Ohio, is an interstate pipeline company engaged in the business 
of transporting natural gas and is subject to the rules and regulations of FERC. 
KO Transmission’s 90-mile pipeline supplies natural gas to Duke Energy Ohio 
and interconnects with the Columbia Gulf Transmission pipeline and Tennessee 
Gas Pipeline. An approximately 70-mile portion of KO Transmission’s pipeline 
facilities is co-owned by Columbia Gas Transmission Corporation. 

PART ISee Notes 3, 12 and 17 to the Consolidated Financial Statements, 
“Regulatory Matters,” “Investments in Unconsolidated Affiliates” and “Variable 
Interest Entities,” respectively, for further information on Duke Energy’s pipeline 
investments. 

Inventory

Gas Utilities and Infrastructure must maintain adequate natural gas 
inventory in order to provide reliable delivery to customers. As of December 31, 
2020, the inventory balance for Gas Utilities and Infrastructure was $82 million. 
For more information on inventory, see Note 1 to the Consolidated Financial 
Statements, “Summary of Significant Accounting Policies.”

Regulation

State

The state gas utility commissions approve rates for Duke Energy’s 
retail natural gas service within their respective states. The state gas utility 
commissions, to varying degrees, have authority over the construction and 
operation of Gas Utilities and Infrastructure’s natural gas distribution facilities. 

CPCNs issued by the state gas utility commissions or other government 
agencies, as applicable, authorize Gas Utilities and Infrastructure to construct 
and operate its natural gas distribution facilities and to sell natural gas to retail 
and wholesale customers. Prior approval from the relevant state gas utility 
commission is required for Gas Utilities and Infrastructure to issue securities. 
The underlying concept of utility ratemaking is to set rates at a level that 
allows the utility to collect revenues equal to its cost of providing service plus a 
reasonable rate of return on its invested capital, including equity.

In addition to amounts collected from customers through approved base 
rates, each of the state gas utility commissions allow recovery of certain costs 
through various cost-recovery clauses to the extent the respective commission 
determines in periodic hearings that such costs, including any past over- or 
under-recovered costs, are prudent. 

Natural gas costs are eligible for recovery by Gas Utilities and 
Infrastructure. Due to the associated regulatory treatment and the method 
allowed for recovery, changes in natural gas costs from year to year have no 
material impact on operating results of Gas Utilities and Infrastructure, unless 
a commission finds a portion of such costs to have been imprudent. However, 
delays between the expenditure for natural gas and recovery from customers 
can adversely impact the timing of cash flows of Gas Utilities and Infrastructure.

The following table summarizes certain components underlying recently approved and effective base rates or rate stabilization filings in the last three years.

Approved Rate Cases:

Piedmont 2017 South Carolina Rate Stabilization Adjustment Filing

Piedmont 2018 South Carolina Rate Stabilization Adjustment Filing

Piedmont 2019 South Carolina Rate Stabilization Adjustment Filing

Piedmont 2020 South Carolina Rate Stabilization Adjustment Filing

Duke Energy Kentucky 2018 Natural Gas Base Rate Case

Piedmont 2019 North Carolina Natural Gas Base Rate Case 

Piedmont 2020 Tennessee Natural Gas Base Rate Case 

Annual 
Increase 
(Decrease) 
(in millions)

$

6

(14)

6 

7 

7 

109

16 

Return 
on 
Equity

Equity 
Component of 
Capital Structure

10.2% 

10.2%

9.9%

9.8%

9.7%

9.7%

9.8%

53.0%

53.0%

55.4%

52.3%

50.8%

52.0%

50.5%

Effective Date

November 2017

November 2018

November 2019

November 2020

April 2019

November 2019

January 2021

Gas Utilities and Infrastructure has IMR mechanisms in North Carolina and Tennessee designed to separately track and recover certain costs associated with capital 
investments incurred to comply with federal pipeline safety and integrity programs. The following table summarizes information related to the recently approved IMR filing. 

(in millions)

Piedmont 2020 IMR Filing – North Carolina

In Piedmont’s Tennessee rate case settled in February 2021, the Company 
included projected IMR investment through December 31, 2021, in its rate base. 
The recovery of integrity investment was requested in the rate case and not 
through the Tennessee IMR mechanism.

For more information on rate matters and other regulatory proceedings, 

see Note 3 to the Consolidated Financial Statements, “Regulatory Matters.”

Federal

Gas Utilities and Infrastructure is subject to various federal regulations, 

including regulations that are particular to the natural gas industry. These 
federal regulations include but are not limited to the following:

• Regulations of the FERC affect the certification and siting of new 
interstate natural gas pipeline projects, the purchase and sale of, 
the prices paid for, and the terms and conditions of service for the 
interstate transportation and storage of natural gas. 

• Regulations of the PHMSA affect the design, construction, operation, 
maintenance, integrity, safety and security of natural gas distribution 
and transmission systems. 

12

Cumulative  
Investment

$

307

Annual  
Revenues

Effective  
Date

$

30 

December 2020

• Regulations of the EPA relate to the environment including proposed 
air emissions regulations that would expand to include emissions of 
methane. 

Regulations of the FERC and the state gas utility commissions govern access 

to regulated natural gas and other data by nonregulated entities and services 
provided between regulated and nonregulated energy affiliates. These regulations 
affect the activities of nonregulated affiliates with Gas Utilities and Infrastructure.

Environmental

Gas Utilities and Infrastructure is subject to the jurisdiction of the EPA 

and state and local environmental agencies. For a discussion of environmental 
regulation, see “Environmental Matters” in this section. See “Other Matters” 
section of Management’s Discussion and Analysis for a discussion about 
potential Global Climate Change legislation and other EPA regulations under 
development and the potential impacts such legislation and regulation could 
have on Duke Energy’s operations.

PART ICOMMERCIAL RENEWABLES

Commercial Renewables primarily acquires, develops, builds, operates 

and owns wind and solar renewable generation throughout the continental 
U.S. The portfolio includes nonregulated renewable energy and energy storage 
businesses. 

Commercial Renewables’ renewable energy includes utility-scale wind 
and solar generation assets, distributed solar generation assets, distributed 
fuel cell assets and battery storage projects, which total 2,763 MW across 
21 states from 21 wind facilities, 150 solar projects, 70 fuel cell locations and 

two battery storage facilities. Revenues are primarily generated by selling the 
power produced from renewable generation through long-term contracts to 
utilities, electric cooperatives, municipalities and corporate customers. In most 
instances, these customers have obligations under state-mandated renewable 
energy portfolio standards or similar state or local renewable energy goals. 
Energy and renewable energy credits generated by wind and solar projects are 
generally sold at contractual prices. The following map shows the locations 
of renewable generation facilities of which Commercial Renewables has an 
ownership interest as of December 31, 2020.

As eligible projects are placed in service, Commercial Renewables 
recognizes either PTCs as power is generated by wind projects over 10 years 
or ITCs when the renewable solar or fuel cell project achieves commercial 
availability. ITCs are recognized over the useful life of the asset as a reduction 
to depreciation expense. Benefits of the tax basis adjustment due to the ITC 
are recognized in income in the year of commercial availability. The ITC for 
solar and fuel cells is being phased down from a rate of 30% for projects that 
began construction before 2020 to a permanent 10% rate for solar and no 
ITC available for fuel cells if construction begins after 2023. The PTC is being 
phased out and wind turbines will earn 10 years of PTCs at phased-out rates if 
construction begins in 2017 through 2021. 

Commercial Renewables has entered into agreements for certain 
of its generating assets that are held by LLCs whose members include a 
noncontrolling tax equity investor. The allocation of tax attributes and cash flows 
to the tax equity investor are governed by the provisions of the LLC agreements. 
The GAAP earnings allocations to the tax equity investors can result in variability 
in earnings to Duke Energy as a result of the application of the HLBV method 
in allocating income or loss to the owners. As part of its growth strategy, 
Commercial Renewables expects to enter into these arrangements for future 
generating assets. 

For additional information on Commercial Renewables’ generation 

facilities, see Item 2, “Properties.”

Market Environment and Competition

Commercial Renewables primarily competes for wholesale contracts for 
the generation and sale of electricity from generation assets it either develops 
or acquires and owns. The market price of commodities and services, along 
with the quality and reliability of services provided, drive competition in the 
wholesale energy business. The number and type of competitors may vary 
based on location, generation type and project size. Commercial Renewables’ 
main competitors include other nonregulated generators and wholesale power 
providers.

Sources of Electricity

Commercial Renewables relies on wind, solar, fuel cells and battery 

resources for its generation of electric energy.

Regulation

Commercial Renewables is subject to regulation at the federal level, 

primarily from the FERC. Regulations of the FERC govern access to regulated 
market information by nonregulated entities and services provided between 
regulated and nonregulated utilities.

13

PART IOTHER

The remainder of Duke Energy’s operations is presented as Other. While 

it is not a business segment, Other primarily includes interest expense on 
holding company debt, unallocated corporate costs including costs to achieve 
strategic acquisitions, amounts related to certain companywide initiatives and 
contributions made to the Duke Energy Foundation. Other also includes Bison 
and an investment in NMC. 

The Duke Energy Foundation is a nonprofit organization funded by Duke 

Energy shareholders that makes charitable contributions to selected nonprofits 
and government subdivisions.

Bison, a wholly owned subsidiary of Duke Energy, is a captive insurance 
company with the principal activity of providing Duke Energy subsidiaries with 
indemnification for financial losses primarily related to property, workers’ 
compensation and general liability.

Duke Energy owns a 17.5% equity interest in NMC. The joint venture 
company has production facilities in Jubail, Saudi Arabia, where it manufactures 
certain petrochemicals and plastics. The company annually produces 
approximately 1 million metric tons each of MTBE and methanol and has the 
capacity to produce 50,000 metric tons of polyacetal. The main feedstocks to 
produce these products are natural gas and butane. Duke Energy records the 
investment activity of NMC using the equity method of accounting and retains 
25% of NMC’s board of directors’ representation and voting rights.

Human Capital Management 

Governance

Our employees are critical to the success of our company. Our Human 

Resources organization is responsible for our human capital management 
strategy, which includes recruiting and hiring, onboarding and training, diversity 
and inclusion, workforce planning, talent and succession planning, performance 
management and employee development. Key areas of focus include fostering 
a high-performance and inclusive culture built on strong leadership and highly 
engaged and diverse employees, building a pipeline of skilled workers and 
ensuring knowledge transfer as employees retire. 

Our Board of Directors provides oversight on certain human capital 

management matters, primarily through the Compensation and People 
Development Committee, which is responsible for reviewing strategies and 
policies related to human capital management, including with respect to matters 
such as diversity and inclusion, employee engagement and talent development. 
The Compensation and People Development Committee also receives updates 
on employee engagement surveys and action plans. 

Employees

On December 31, 2020, Duke Energy had a total of 27,535 full-time, 
part-time and temporary employees, the overwhelming majority of which were 
full-time employees. The total includes 5,165 employees who are represented 
by labor unions under various collective bargaining agreements that generally 
cover wages, benefits, working practices, and other terms and conditions of 
employment.

Compensation 

The company seeks to attract and retain an appropriately qualified 
workforce and leverages Duke Energy’s leadership imperatives to foster a 
culture focused on customers, innovation, and highly engaged employees. 
Our compensation program is designed to link pay to performance with the 
goal of attracting and retaining talented employees, rewarding individual 
performance, encouraging long-term commitment to our business, and aligning 
the interests of our management team with those of key stakeholders, including 
shareholders and customers. In addition to competitive base pay, we provide 
eligible employees with compensation and benefits under a variety of plans and 

programs, including with respect to health care benefits, retirement savings, 
pension, health savings and flexible spending accounts, wellness, family leaves, 
employee assistance, as well as other benefits including a charitable matching 
program. We supplement our pay for performance program with a number of 
compensation policies that are aligned with the long-term interests of Duke 
Energy and our shareholders, including a short-term incentive plan and a  
long-term incentive plan for eligible employees.

Diversity and Inclusion

Duke Energy is committed to continuing to build a diverse workforce that 

reflects the communities we serve while strengthening a culture of inclusion 
where employees and customers feel respected and valued. Our Enterprise 
Diversity and Inclusion Advisory Council, which is chaired by our Chief Operating 
Officer, is responsible for reviewing our diversity and inclusion initiatives for 
continuous improvement, as well as helping to develop actionable outcomes 
and results. We have established aspirational goals with respect to diversity and 
inclusion, and we regularly report our progress toward achieving those goals. 
Our aspirational goals include achieving a workforce representation of at least 
25% female and 20% racial and ethnic diversity. As of December 31, 2020, 
our workforce consisted of approximately 23% female and 18% racial and 
ethnic diversity.

The company also has a number of Employee Resource Groups (ERGs), 

which are networks of employees formed around a common dimension of 
diversity whose goals and objectives align with the company’s goals and 
objectives. These groups focus on employee professional development and 
networking, community outreach, cultural awareness, recruiting and retention. 
They also serve as a resource to the company for advocacy and community 
outreach and improving customer service through innovation. ERG-sponsored 
forums include networking events, mentoring, scholarship banquets for 
aspiring college students, and workshops on topics such as time management, 
stress reduction, career planning and work-life balance. Our ERGs are open to 
all employees.

Among other efforts, the company has developed partnerships with 
community organizations, community colleges and historically black colleges 
and universities to support our strategy of building a diverse and highly skilled 
talent pipeline. 

Operational Excellence 

The foundation for our growth and success is our continued focus on 
operational excellence, the leading indicator of which is safety. As such, the 
safety of our workforce remains our top priority. The company closely monitors 
the Total Incident Case Rate (TICR), which is a metric based on strict OSHA 
definitions that measures the number of occupational injuries and illnesses per 
100 employees. This objective emphasizes our focus on achieving an event-free 
and injury-free workplace. As an indication of our commitment to safety, we 
include safety metrics in both the short-term and long-term incentive plans 
based on the TICR for employees. Our employees delivered strong safety results 
in 2020, consistent with our industry-leading performance levels from 2016 
through 2019.

COVID-19 Response

Safety continued to be of paramount importance during the COVID-19 
pandemic and included executing on robust business continuity plans that 
helped ensure critical functions continued to operate under a broad range of 
circumstances while maintaining a safe work environment. Actions included the 
following: 

• Engaged our environmental, health and safety experts to develop new 

safety protocols for thousands of essential workers

• Quickly transitioned thousands of employees to virtual status 

14

PART I• Added bandwidth for our information technology systems, reviewed 
inventory in supply chain, implemented a series of surveys to get 
employee input, and provided ongoing communications to keep them 
informed as conditions evolved

• Created a cross-functional COVID-19 case management team to track 
and disposition positive cases, ensure appropriate contact tracing and 
compliance with quarantine and safe return to work requirements

• Ensured power plants and electricity and natural gas delivery facilities 
were staffed, helping safeguard dependable service to customers

• Implemented stringent preventive measures in alignment with the 

Centers for Disease Control and Prevention’s (CDC) guidance to help 
keep employees and customers safe and help ensure we had adequate 
resources to maintain reliability

Information about Our Executive Officers

The company also provided additional benefits to support our workforce 

throughout the pandemic, including:

• 60 hours of additional personal time off to employees who experienced 

a disruption in dependent care due to school, daycare or other 
dependent care issues 

• A $1,500 stipend to assist with unplanned expenses resulting from 
costs related to COVID-19 to employees at a certain pay threshold

• Donated more than $550,000 to the Relief4Employees program, which 
is a fund that employees can draw upon for short-term financial help 
during times of personal need

The following table sets forth the individuals who currently serve as executive officers. Executive officers serve until their successors are duly elected or appointed. 

Name

Lynn J. Good

Steven K. Young

Douglas F Esamann

Age(a)

Current and Recent Positions Held

61 

62 

63 

Chair, President and Chief Executive Officer. Ms. Good has served as Chair, President and Chief Executive Officer of Duke Energy since 
January 1, 2016, and was Vice Chairman, President and Chief Executive Officer of Duke Energy from July 2013 through December 2015. Prior to 
that, she served as Executive Vice President and Chief Financial Officer since 2009.

Executive Vice President and Chief Financial Officer. Mr. Young assumed his current position in August 2013. Prior to that, he served as 
Vice President, Chief Accounting Officer and Controller, assuming the role of Chief Accounting Officer in July 2012 and the role of Controller in 
December 2006.

Executive Vice President, Energy Solutions and President, Midwest/Florida Regions and Natural Gas Business. Mr. Esamann assumed 
his current position in October 2019, was Executive Vice President, Energy Solutions and President, Midwest and Florida Regions since 
September 2016 and was Executive Vice President and President, Midwest and Florida Regions since June 2015. Prior to that, he served as 
President, Duke Energy Indiana since November 2010.

Kodwo Ghartey-Tagoe

57 

Dwight L. Jacobs

Dhiaa M. Jamil

Julia S. Janson

Brian D. Savoy

Harry K. Sideris

55 

64 

56 

45 

50 

Executive Vice President, Chief Legal Officer and Corporate Secretary. Mr. Ghartey-Tagoe assumed the position of Executive Vice President, 
Chief Legal Officer and Corporate Secretary in May 2020. He was appointed Executive Vice President and Chief Legal Officer in October 2019, 
after serving as President, South Carolina since 2017. Mr. Ghartey-Tagoe joined Duke Energy in 2002 and has held numerous management 
positions in Duke Energy’s Legal Department, including Duke Energy's Senior Vice President of State and Federal Regulatory Legal Support.

Senior Vice President, Chief Accounting Officer, Tax and Controller. Mr. Jacobs has served as Senior Vice President, Chief Accounting Officer, 
Tax and Controller since January 1, 2019. Prior to that, he served as Senior Vice President, Chief Accounting Officer and Controller since June 1, 
2018. Prior to that, he served as Senior Vice President, Financial Planning & Analysis since February 2016 and as Chief Risk Officer since July 2014. 
Prior to his role as Chief Risk Officer, Mr. Jacobs served as Vice President, Rates & Regulatory Strategy since May 2010.

Executive Vice President and Chief Operating Officer. Mr. Jamil assumed the role of Chief Operating Officer in May 2016. Prior to his current 
position, he held the title Executive Vice President and President, Regulated Generation and Transmission since June 2015. Prior to that, he 
served as Executive Vice President and President, Regulated Generation since August 2014. He served as Executive Vice President and President 
of Duke Energy Nuclear from March 2013 to August 2014, and was Chief Nuclear Officer from February 2008 to February 2013.

Executive Vice President, External Affairs and President, Carolinas Region. Ms. Janson has held the position of Executive Vice President, 
External Affairs and President, Carolinas Region since October 2019. Prior to that, she held the position of Executive Vice President, External 
Affairs and Chief Legal Officer since November 2018. She originally assumed the position of Executive Vice President, Chief Legal Officer and 
Corporate Secretary in December 2012, and then assumed the responsibilities for External Affairs in February 2016.

Senior Vice President, Chief Transformation and Administrative Officer. Mr. Savoy assumed his current position in October 2019. Prior to 
that, he served as Senior Vice President, Business Transformation and Technology since May 2016; Senior Vice President, Controller and Chief 
Accounting Officer from September 2013 to May 2016; Director, Forecasting and Analysis from 2009 to September 2013; and Vice President and 
Controller of the Commercial Power segment from 2006 to 2009.

Senior Vice President, Customer Experience and Services. Mr. Sideris assumed his current position in October 2019. Prior to that, he served 
as Senior Vice President and Chief Distribution Officer since June 2018; State President, Florida from January 2017 to June 2018; Senior Vice 
President of Environmental Health and Safety from August 2014 to January 2017; and Vice President of Power Generations for the Company's 
Fossil/Hydro Operations in the western portions of North Carolina and South Carolina from July 2012 to August 2014.

(a)  The ages of the officers provided are as of January 31, 2021.

There are no family relationships between any of the executive officers, 
nor any arrangement or understanding between any executive officer and any 
other person involved in officer selection.

Environmental Matters

The Duke Energy Registrants are subject to federal, state and local laws 
and regulations with regard to air and water quality, hazardous and solid waste 
disposal and other environmental matters. Environmental laws and regulations 
affecting the Duke Energy Registrants include, but are not limited to:

• The Clean Air Act, as well as state laws and regulations impacting air 

emissions, including State Implementation Plans related to existing and 
new national ambient air quality standards for ozone and particulate 
matter. Owners and/or operators of air emission sources are responsible 
for obtaining permits and for annual compliance and reporting.

• The CWA, which requires permits for facilities that discharge 

wastewaters into navigable waters.

• The Comprehensive Environmental Response, Compensation and 

Liability Act, which can require any individual or entity that currently 
owns or in the past owned or operated a disposal site, as well as 

15

PART Itransporters or generators of hazardous substances sent to a disposal 
site, to share in remediation costs.

• The National Environmental Policy Act, which requires federal agencies 
to consider potential environmental impacts in their permitting and 
licensing decisions, including siting approvals.

• Coal Ash Act, as amended, which establishes requirements regarding the 
use and closure of existing ash basins, the disposal of ash at active coal 
plants and the handling of surface water and groundwater impacts from 
ash basins in North Carolina. 

• The Solid Waste Disposal Act, as amended by RCRA, which creates a 

framework for the proper management of hazardous and nonhazardous 
solid waste; classifies CCR as nonhazardous waste; and establishes 
standards for landfill and surface impoundment placement, design, 
operation and closure, groundwater monitoring, corrective action, and 
post-closure care. 

• The Toxic Substances Control Act, which gives EPA the authority to 

require reporting, recordkeeping and testing requirements, and to place 
restrictions relating to chemical substances and/or mixtures, including 
polychlorinated biphenyls.

For more information on environmental matters, see Notes 4 and 9 to 
the Consolidated Financial Statements, “Commitments and Contingencies – 
Environmental” and “Asset Retirement Obligations,” respectively, and the 
“Other Matters” section of Management’s Discussion and Analysis. Except as 
otherwise described in these sections, costs to comply with current federal, 
state and local provisions regulating the discharge of materials into the 
environment or other potential costs related to protecting the environment are 
incorporated into the routine cost structure of our various business segments 
and are not expected to have a material adverse effect on the competitive 
position, consolidated results of operations, cash flows or financial position of 
the Duke Energy Registrants.

The “Other Matters” section of Management’s Discussion and Analysis 
includes more information on certain environmental regulations and a discussion 
of Global Climate Change including the potential impact of current and future 
legislation related to GHG emissions on the Duke Energy Registrants’ operations. 
Recently passed and potential future environmental statutes and regulations 
could have a significant impact on the Duke Energy Registrants’ results of 
operations, cash flows or financial position. However, if and when such statutes 
and regulations become effective, the Duke Energy Registrants will seek 
appropriate regulatory recovery of costs to comply within its regulated operations.

DUKE ENERGY CAROLINAS

Duke Energy Carolinas is a regulated public utility primarily engaged in 
the generation, transmission, distribution and sale of electricity in portions of 
North Carolina and South Carolina. Duke Energy Carolinas’ service area covers 
approximately 24,000 square miles and supplies electric service to 2.7 million 
residential, commercial and industrial customers. For information about Duke 
Energy Carolinas’ generating facilities, see Item 2, “Properties.” Duke Energy 
Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC 
and FERC.

Substantially all of Duke Energy Carolinas’ operations are regulated 
and qualify for regulatory accounting. Duke Energy Carolinas operates one 
reportable business segment, Electric Utilities and Infrastructure. For additional 
information regarding this business segment, including financial information, 
see Note 2 to the Consolidated Financial Statements, “Business Segments.”

PROGRESS ENERGY

Progress Energy is a public utility holding company primarily engaged in 
the regulated electric utility business and is subject to regulation by the FERC. 
Progress Energy conducts operations through its wholly owned subsidiaries, 

Duke Energy Progress and Duke Energy Florida. When discussing Progress 
Energy’s financial information, it necessarily includes the results of Duke Energy 
Progress and Duke Energy Florida.

Substantially all of Progress Energy’s operations are regulated and qualify 

for regulatory accounting. Progress Energy operates one reportable business 
segment, Electric Utilities and Infrastructure. For additional information 
regarding this business segment, including financial information, see Note 2 to 
the Consolidated Financial Statements, “Business Segments.”

DUKE ENERGY PROGRESS

Duke Energy Progress is a regulated public utility primarily engaged in 
the generation, transmission, distribution and sale of electricity in portions 
of North Carolina and South Carolina. Duke Energy Progress’ service area 
covers approximately 29,000 square miles and supplies electric service to 
approximately 1.6 million residential, commercial and industrial customers. 
For information about Duke Energy Progress’ generating facilities, see Item 2, 
“Properties.” Duke Energy Progress is subject to the regulatory provisions of the 
NCUC, PSCSC, NRC and FERC.

Substantially all of Duke Energy Progress’ operations are regulated 
and qualify for regulatory accounting. Duke Energy Progress operates one 
reportable business segment, Electric Utilities and Infrastructure. For additional 
information regarding this business segment, including financial information, 
see Note 2 to the Consolidated Financial Statements, “Business Segments.”

DUKE ENERGY FLORIDA

Duke Energy Florida is a regulated public utility primarily engaged in 
the generation, transmission, distribution and sale of electricity in portions of 
Florida. Duke Energy Florida’s service area covers approximately 13,000 square 
miles and supplies electric service to approximately 1.9 million residential, 
commercial and industrial customers. For information about Duke Energy 
Florida’s generating facilities, see Item 2, “Properties.” Duke Energy Florida is 
subject to the regulatory provisions of the FPSC, NRC and FERC.

Substantially all of Duke Energy Florida’s operations are regulated 
and qualify for regulatory accounting. Duke Energy Florida operates one 
reportable business segment, Electric Utilities and Infrastructure. For additional 
information regarding this business segment, including financial information, 
see Note 2 to the Consolidated Financial Statements, “Business Segments.”

DUKE ENERGY OHIO

Duke Energy Ohio is a regulated public utility primarily engaged in the 
transmission and distribution of electricity in portions of Ohio and Kentucky, 
in the generation and sale of electricity in portions of Kentucky and the 
transportation and sale of natural gas in portions of Ohio and Kentucky. Duke 
Energy Ohio also conducts competitive auctions for retail electricity supply in 
Ohio whereby recovery of the energy price is from retail customers. Operations 
in Kentucky are conducted through its wholly owned subsidiary, Duke Energy 
Kentucky. References herein to Duke Energy Ohio include Duke Energy Ohio and 
its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the 
regulatory provisions of the PUCO, KPSC, PHMSA and FERC.

Duke Energy Ohio’s service area covers approximately 3,000 square miles 
and supplies electric service to approximately 880,000 residential, commercial 
and industrial customers and provides transmission and distribution services 
for natural gas to approximately 545,000 customers. For information about Duke 
Energy Ohio’s generating facilities, see Item 2, “Properties.” 

KO Transmission, a wholly owned subsidiary of Duke Energy Ohio, is an 
interstate pipeline company engaged in the business of transporting natural 
gas and is subject to the rules and regulations of FERC. KO Transmission’s 
90-mile pipeline supplies natural gas to Duke Energy Ohio and interconnects 
with the Columbia Gulf Transmission pipeline and Tennessee Gas Pipeline. 
An approximately 70-mile portion of KO Transmission’s pipeline facilities is 
co-owned by Columbia Gas Transmission Corporation. 

16

PART ISubstantially all of Duke Energy Ohio’s operations are regulated and 

qualify for regulatory accounting. Duke Energy Ohio has two reportable 
segments, Electric Utilities and Infrastructure and Gas Utilities and 
Infrastructure. For additional information on these business segments, including 
financial information, see Note 2 to the Consolidated Financial Statements, 
“Business Segments.”

DUKE ENERGY INDIANA

Duke Energy Indiana is a regulated public utility primarily engaged in 

the generation, transmission, distribution and sale of electricity in portions of 
Indiana. Duke Energy Indiana’s service area covers 23,000 square miles and 
supplies electric service to 850,000 residential, commercial and industrial 
customers. For information about Duke Energy Indiana’s generating facilities, 
see Item 2, “Properties.” Duke Energy Indiana is subject to the regulatory 
provisions of the IURC and FERC.

Substantially all of Duke Energy Indiana’s operations are regulated 
and qualify for regulatory accounting. Duke Energy Indiana operates one 
reportable business segment, Electric Utilities and Infrastructure. For additional 
information regarding this business segment, including financial information, 
see Note 2 to the Consolidated Financial Statements, “Business Segments.”

PIEDMONT

Piedmont is a regulated public utility primarily engaged in the distribution 

of natural gas to over 1.1 million residential, commercial, industrial and 
power generation customers in portions of North Carolina, South Carolina and 
Tennessee, including customers served by municipalities who are wholesale 
customers. For information about Piedmont’s natural gas distribution facilities, 
see Item 2, “Properties.” Piedmont is subject to the regulatory provisions of the 
NCUC, PSCSC, TPUC, PHMSA and FERC.

Substantially all of Piedmont’s operations are regulated and qualify for 
regulatory accounting. Piedmont operates one reportable business segment, Gas 
Utilities and Infrastructure. For additional information regarding this business 
segment, including financial information, see Note 2 to the Consolidated 
Financial Statements, “Business Segments.”

ITEM 1A. RISK FACTORS

In addition to other disclosures within this Form 10-K, including 
“Management’s Discussion and Analysis of Financial Condition and Results 
of Operations – Matters Impacting Future Results” for each registrant in 
Item 7, and other documents filed with the SEC from time to time, the following 
factors should be considered in evaluating Duke Energy and its subsidiaries. 
Such factors could affect actual results of operations and cause results to 
differ substantially from those currently expected or sought. Unless otherwise 
indicated, risk factors discussed below generally relate to risks associated with 
all of the Duke Energy Registrants. Risks identified at the Subsidiary Registrant 
level are generally applicable to Duke Energy.

BUSINESS STRATEGY RISKS

Duke Energy’s future results could be adversely affected if it is unable to 
implement its business strategy.

Duke Energy’s results of operations depend, in significant part, on the 

extent to which it can implement its business strategy successfully. Duke 
Energy’s strategy, which includes transforming the customer experience, 
achieving net-zero carbon emissions by 2050, modernizing the regulatory 
construct and digital transformation, is subject to business, regulatory, 
economic and competitive uncertainties and contingencies, and required 
advancements in technology to achieve net-zero carbon emissions by 2050, 

many of which are beyond its control. As a consequence, Duke Energy may not 
be able to fully implement or realize the anticipated results of its strategy.

REGULATORY, LEGISLATIVE AND LEGAL RISKS

The Duke Energy Registrants’ regulated utility revenues, earnings and 
results are dependent on state legislation and regulation that affect 
electric generation, electric and natural gas transmission, distribution and 
related activities, which may limit their ability to recover costs.

The Duke Energy Registrants’ regulated electric and natural gas utility 

businesses are regulated on a cost-of-service/rate-of-return basis subject to 
statutes and regulatory commission rules and procedures of North Carolina, 
South Carolina, Florida, Ohio, Tennessee, Indiana and Kentucky. If the Duke 
Energy Registrants’ regulated utility earnings exceed the returns established 
by the state utility commissions, retail electric and natural gas rates may be 
subject to review and possible reduction by the Commissions, which may 
decrease the Duke Energy Registrants’ earnings. Additionally, if regulatory 
bodies do not allow recovery of costs incurred in providing service, or do not do 
so on a timely basis, the Duke Energy Registrants’ earnings could be negatively 
impacted.

If legislative and regulatory structures were to evolve in such a way that 

the Duke Energy Registrants’ exclusive rights to serve their regulated customers 
were eroded, their earnings could be negatively impacted. Federal and state 
regulations, laws and other efforts designed to promote and expand the use 
of EE measures and distributed generation technologies, such as private solar 
and battery storage, in Duke Energy service territories could result in customers 
leaving the electric distribution system and an increase in customer net energy 
metering, which allows customers with private solar to receive bill credits for 
surplus power at the full retail amount. Over time, customer adoption of these 
technologies and increased EE could result in excess generation resources as 
well as stranded costs if Duke Energy is not able to fully recover the costs and 
investment in generation. 

State regulators have approved various mechanisms to stabilize natural 

gas utility margins, including margin decoupling in North Carolina and rate 
stabilization in South Carolina. State regulators have approved other margin 
stabilizing mechanisms that, for example, allow for recovery of margin losses 
associated with negotiated transactions designed to retain large volume 
customers that could use alternative fuels or that may otherwise directly access 
natural gas supply through their own connection to an interstate pipeline. If 
regulators decided to discontinue the Duke Energy Registrants’ use of tariff 
mechanisms, it would negatively impact results of operations, financial position 
and cash flows. In addition, regulatory authorities also review whether natural 
gas costs are prudently incurred and can disallow the recovery of a portion 
of natural gas costs that the Duke Energy Registrants seek to recover from 
customers, which would adversely impact earnings.

The rates that the Duke Energy Registrants’ regulated utility businesses 
are allowed to charge are established by state utility commissions in rate 
case proceedings, which may limit their ability to recover costs and earn 
an appropriate return on investment.

The rates that the Duke Energy Registrants’ regulated utility business are 

allowed to charge significantly influences the results of operations, financial 
position and cash flows of the Duke Energy Registrants. The regulation of the 
rates that the regulated utility businesses charge customers is determined, 
in large part, by state utility commissions in rate case proceedings. Negative 
decisions made by these regulators, or by any court on appeal of a rate 
case proceeding, could have a material adverse effect on the Duke Energy 
Registrants’ results of operations, financial position or cash flows and affect the 
ability of the Duke Energy Registrants to recover costs and an appropriate return 
on the significant infrastructure investments being made.

17

PART IDeregulation or restructuring in the electric industry may result in 
increased competition and unrecovered costs that could adversely affect 
the Duke Energy Registrants’ results of operations, financial position or 
cash flows and their utility businesses.

Increased competition resulting from deregulation or restructuring 
legislation could have a significant adverse impact on the Duke Energy 
Registrants’ results of operations, financial position or cash flows. If the 
retail jurisdictions served by the Duke Energy Registrants become subject to 
deregulation, the impairment of assets, loss of retail customers, lower profit 
margins or increased costs of capital, and recovery of stranded costs could 
have a significant adverse financial impact on the Duke Energy Registrants. 
Stranded costs primarily include the generation assets of the Duke Energy 
Registrants whose value in a competitive marketplace may be less than their 
current book value, as well as above-market purchased power commitments 
from QFs from whom the Duke Energy Registrants are legally obligated to 
purchase energy at an avoided cost rate under PURPA. The Duke Energy 
Registrants cannot predict the extent and timing of entry by additional 
competitors into the electric markets. The Duke Energy Registrants cannot 
predict if or when they will be subject to changes in legislation or regulation, 
nor can they predict the impact of these changes on their results of operations, 
financial position or cash flows.

The Duke Energy Registrants’ businesses are subject to extensive federal 
regulation and a wide variety of laws and governmental policies, including 
taxes, that may change over time in ways that affect operations and costs.

The Duke Energy Registrants are subject to regulations under a wide 

variety of U.S. federal and state regulations and policies, including by 
FERC, NRC, EPA and various other federal agencies as well as the North 
American Electric Reliability Corporation. Regulation affects almost every 
aspect of the Duke Energy Registrants’ businesses, including, among other 
things, their ability to: take fundamental business management actions; 
determine the terms and rates of transmission and distribution services; 
make acquisitions; issue equity or debt securities; engage in transactions 
with other subsidiaries and affiliates; and pay dividends upstream to the 
Duke Energy Registrants. Changes to federal regulations are continuous and 
ongoing. There can be no assurance that laws, regulations and policies will 
not be changed in ways that result in material modifications of business 
models and objectives or affect returns on investment by restricting 
activities and products, subjecting them to escalating costs, causing delays, 
or prohibiting them outright.

The Duke Energy Registrants are subject to numerous environmental 
laws and regulations requiring significant capital expenditures that can 
increase the cost of operations, and which may impact or limit business 
plans, or cause exposure to environmental liabilities.

The Duke Energy Registrants are subject to numerous environmental laws 

and regulations affecting many aspects of their present and future operations, 
including CCRs, air emissions, water quality, wastewater discharges, solid 
waste and hazardous waste. These laws and regulations can result in 
increased capital, operating and other costs. These laws and regulations 
generally require the Duke Energy Registrants to obtain and comply with a wide 
variety of environmental licenses, permits, inspections and other approvals. 
Compliance with environmental laws and regulations can require significant 
expenditures, including expenditures for cleanup costs and damages arising 
from contaminated properties. Failure to comply with environmental regulations 
may result in the imposition of fines, penalties and injunctive measures 
affecting operating assets. The steps the Duke Energy Registrants could be 
required to take to ensure their facilities are in compliance could be prohibitively 

expensive. As a result, the Duke Energy Registrants may be required to shut 
down or alter the operation of their facilities, which may cause the Duke Energy 
Registrants to incur losses. Further, the Duke Energy Registrants may not be 
successful in recovering capital and operating costs incurred to comply with 
new environmental regulations through existing regulatory rate structures 
and their contracts with customers. Also, the Duke Energy Registrants may 
not be able to obtain or maintain from time to time all required environmental 
regulatory approvals for their operating assets or development projects. Delays 
in obtaining any required environmental regulatory approvals, failure to obtain 
and comply with them or changes in environmental laws or regulations to more 
stringent compliance levels could result in additional costs of operation for 
existing facilities or development of new facilities being prevented, delayed or 
subject to additional costs. Although it is not expected that the costs to comply 
with current environmental regulations will have a material adverse effect on 
the Duke Energy Registrants’ results of operations, financial position and cash 
flows due to regulatory cost recovery, the Duke Energy Registrants are at risk 
that the costs of complying with environmental regulations in the future will 
have such an effect.

The EPA has enacted or proposed federal regulations governing the 
management of cooling water intake structures, wastewater and CO2 emissions. 
New state legislation, including the North Carolina Clean Energy Plan, could 
impose carbon reduction goals that are more aggressive than the company’s 
plans. These regulations may require the Duke Energy Registrants to make 
additional capital expenditures and increase operating and maintenance costs.

The Duke Energy Registrants’ operations, capital expenditures and 
financial results may be affected by regulatory changes related to the 
impacts of global climate change.

There is continued concern, and increasing activism, both nationally and 
internationally, about climate change. The EPA and state regulators may adopt 
and implement regulations to restrict emissions of GHGs to address global 
climate change. Increased regulation of GHG emissions could impose significant 
additional costs on the Duke Energy Registrants’ electric and natural gas 
operations, their suppliers and customers. Regulatory changes could result in 
generation facilities to be retired early and result in stranded costs if Duke Energy 
is not able to fully recover the costs and investment in generation, and could also 
affect demand for energy conservation and renewable products, which could 
impact our electric and natural gas businesses.

OPERATIONAL RISKS

The Duke Energy Registrants’ operations have been and may be affected 
by COVID-19 in ways listed below and in ways the registrants cannot 
predict at this time.

The COVID-19 pandemic has impacted the Duke Energy Registrants’ 
business strategy, results of operations, financial position and cash flows, albeit 
not materially as of this filing date, from specific activities listed below:

• Decreased demand for electricity and natural gas; 

• Delays in rate cases and other legal proceedings; 

• An inability to obtain labor or equipment necessary for the construction 

of generation projects or pipeline expansion;

• The health and availability of our critical personnel and their ability to 

perform business functions; and

• Actions of state utility commissions or federal or state governments 

to allow customers to suspend or delay payment of bills related to the 
provision of electric or natural gas services.

18

PART IFurthermore, due to the unpredictability of the COVID-19 pandemic’s 

• natural gas, crude oil and refined products production levels and prices;

ongoing impact on global health and economic stability, the Duke Energy 
Registrants expect that the activities listed below could negatively impact their 
business strategy, results of operations, financial position and cash flows:

• An inability to procure satisfactory levels of fuels or other necessary 

equipment to continue production of electricity and delivery of natural 
gas; 

• An inability to maintain information technology systems and protections 

from cyberattack; 

• An inability to obtain financing in volatile financial markets; 

• Additional federal regulation tied to stimulus and other aid packages; 

and

• Impairment charges, which could include real estate as options for 

working remotely are evaluated and goodwill.

The Duke Energy Registrants’ results of operations may be negatively 
affected by overall market, economic and other conditions that are beyond 
their control.

Sustained downturns or sluggishness in the economy generally affect the 
markets in which the Duke Energy Registrants operate and negatively influence 
operations. Declines in demand for electricity or natural gas as a result of 
economic downturns in the Duke Energy Registrants’ regulated service territories 
will reduce overall sales and lessen cash flows, especially as industrial 
customers reduce production and, therefore, consumption of electricity and the 
use of natural gas. Although the Duke Energy Registrants’ regulated electric 
and natural gas businesses are subject to regulated allowable rates of return 
and recovery of certain costs, such as fuel and purchased natural gas costs, 
under periodic adjustment clauses, overall declines in electricity or natural gas 
sold as a result of economic downturn or recession could reduce revenues and 
cash flows, thereby diminishing results of operations. Additionally, prolonged 
economic downturns that negatively impact the Duke Energy Registrants’ results 
of operations and cash flows could result in future material impairment charges 
to write-down the carrying value of certain assets, including goodwill, to their 
respective fair values.

The Duke Energy Registrants also sell electricity into the spot market or 
other competitive power markets on a contractual basis. With respect to such 
transactions, the Duke Energy Registrants are not guaranteed any rate of return 
on their capital investments through mandated rates, and revenues and results 
of operations are likely to depend, in large part, upon prevailing market prices. 
These market prices may fluctuate substantially over relatively short periods 
of time and could reduce the Duke Energy Registrants’ revenues and margins, 
thereby diminishing results of operations.

Factors that could impact sales volumes, generation of electricity and 

market prices at which the Duke Energy Registrants are able to sell electricity 
and natural gas are as follows:

• weather conditions, including abnormally mild winter or summer 
weather that cause lower energy or natural gas usage for heating 
or cooling purposes, as applicable, and periods of low rainfall that 
decrease the ability to operate facilities in an economical manner;

• supply of and demand for energy commodities;

• transmission or transportation constraints or inefficiencies that impact 

nonregulated energy operations;

• availability of competitively priced alternative energy sources, which 
are preferred by some customers over electricity produced from coal, 
nuclear or natural gas plants, and customer usage of energy-efficient 
equipment that reduces energy demand;

• ability to procure satisfactory levels of inventory, such as coal, natural 

gas and uranium; and

• capacity and transmission service into, or out of, the Duke Energy 

Registrants’ markets.

Natural disasters or operational accidents may adversely affect the Duke 
Energy Registrants’ operating results.

Natural disasters or other operational accidents within the company 

or industry (such as forest fires, earthquakes, hurricanes or natural gas 
transmission pipeline explosions) could have direct or indirect impacts to 
the Duke Energy Registrants or to key contractors and suppliers. Further, the 
generation of electricity and the transportation and storage of natural gas 
involve inherent operating risks that may result in accidents involving serious 
injury or loss of life, environmental damage or property damage. Such events 
could impact the Duke Energy Registrants through changes to policies, laws 
and regulations whose compliance costs have a significant impact on the Duke 
Energy Registrants’ results of operations, financial position and cash flows. 
In addition, if a serious operational accident were to occur, existing insurance 
policies may not cover all of the potential exposures or the actual amount of 
loss incurred. Any losses not covered by insurance, or any increases in the cost 
of applicable insurance as a result of such accident, could have a material 
adverse effect on the results of operations, financial position, cash flows and 
reputation of the Duke Energy Registrants.

The reputation and financial condition of the Duke Energy Registrants 
could be negatively impacted due to their obligations to comply with 
federal and state regulations, laws, and other legal requirements that 
govern the operations, assessments, storage, closure, remediation, 
disposal and monitoring relating to CCR, the high costs and new 
rate impacts associated with implementing these new CCR-related 
requirements and the strategies and methods necessary to implement 
these requirements in compliance with these legal obligations.

As a result of electricity produced for decades at coal-fired power plants, 

the Duke Energy Registrants manage large amounts of CCR that are primarily 
stored in dry storage within landfills or combined with water in other surface 
impoundments, all in compliance with applicable regulatory requirements. 
A CCR-related operational incident could have a material adverse impact on the 
reputation and results of operations, financial position and cash flows of the 
Duke Energy Registrants. 

During 2015, EPA regulations were enacted related to the management 
of CCR from power plants. These regulations classify CCR as nonhazardous 
waste under the RCRA and apply to electric generating sites with new 
and existing landfills and, new and existing surface impoundments, and 
establish requirements regarding landfill design, structural integrity design 
and assessment criteria for surface impoundments, groundwater monitoring, 
protection and remedial procedures and other operational and reporting 
procedures for the disposal and management of CCR. In addition to the 
federal regulations, CCR landfills and surface impoundments will continue 
to be regulated by existing state laws, regulations and permits, as well as 
additional legal requirements that may be imposed in the future, such as the 
settlement reached with the NCDEQ to excavate seven of the nine remaining 
coal ash basins in North Carolina, and partially excavate the remaining two. 
These federal and state laws, regulations and other legal requirements may 
require or result in additional expenditures, including increased operating and 
maintenance costs, which could affect the results of operations, financial 
position and cash flows of the Duke Energy Registrants. The Duke Energy 
Registrants will continue to seek full cost recovery for expenditures through the 

19

PART Inormal ratemaking process with state and federal utility commissions, who 
permit recovery in rates of necessary and prudently incurred costs associated 
with the Duke Energy Registrants’ regulated operations, and through other 
wholesale contracts with terms that contemplate recovery of such costs, 
although there is no guarantee of full cost recovery. In addition, the timing for 
and amount of recovery of such costs could have a material adverse impact on 
Duke Energy’s cash flows.

The Duke Energy Registrants have recognized significant AROs related to 

these CCR-related requirements. Closure activities began in 2015 at the four 
sites specified as priority by the Coal Ash Act and at the W.S. Lee Steam Station 
site in South Carolina in connection with other legal requirements. Excavation 
at these sites involves movement of CCR materials to off-site locations for use 
as structural fill, to appropriate engineered off-site or on-site lined landfills or 
conversion of the ash for beneficial use. Duke Energy has completed excavation 
of coal ash at three of the four high priority sites. At other sites, planning and 
closure methods have been studied and factored into the estimated retirement 
and management costs, and closure activities have commenced. As the 
closure and CCR management work progresses and final closure plans and 
corrective action measures are developed and approved at each site, the scope 
and complexity of work and the amount of CCR material could be greater than 
estimates and could, therefore, materially increase compliance expenditures 
and rate impacts.

The Duke Energy Registrants’ results of operations, financial position and 
cash flows may be negatively affected by a lack of growth or slower growth 
in the number of customers, or decline in customer demand or number of 
customers.

Growth in customer accounts and growth of customer usage each 
directly influence demand for electricity and natural gas and the need for 
additional power generation and delivery facilities. Customer growth and 
customer usage are affected by several factors outside the control of the 
Duke Energy Registrants, such as mandated EE measures, demand-side 
management goals, distributed generation resources and economic and 
demographic conditions, such as population changes, job and income 
growth, housing starts, new business formation and the overall level of 
economic activity.

Certain regulatory and legislative bodies have introduced or are 
considering requirements and/or incentives to reduce energy consumption 
by certain dates. Additionally, technological advances driven by federal laws 
mandating new levels of EE in end-use electric devices or other improvements 
in or applications of technology could lead to declines in per capita energy 
consumption.

Advances in distributed generation technologies that produce power, 

including fuel cells, microturbines, wind turbines and solar cells, may reduce 
the cost of alternative methods of producing power to a level competitive 
with central power station electric production utilized by the Duke Energy 
Registrants.

Some or all of these factors could result in a lack of growth or decline in 

customer demand for electricity or number of customers and may cause the 
failure of the Duke Energy Registrants to fully realize anticipated benefits from 
significant capital investments and expenditures, which could have a material 
adverse effect on their results of operations, financial position and cash flows.

Furthermore, the Duke Energy Registrants currently have EE riders in place 

to recover the cost of EE programs in North Carolina, South Carolina, Florida, 
Indiana, Ohio and Kentucky. Should the Duke Energy Registrants be required 
to invest in conservation measures that result in reduced sales from effective 
conservation, regulatory lag in adjusting rates for the impact of these measures 
could have a negative financial impact.

The Duke Energy Registrants future results may be impacted by changing 
customer expectations and demands including heightened emphasis on 
environmental, social and governance concerns.

Duke Energy’s outcomes are influenced by the expectations of our 
customers and stakeholders. Those expectations are based on the core 
fundamentals of reliability and affordability but are also increasingly focused 
on our ability to meet rapidly changing demands for new and varied products, 
services and offerings. Additionally, the risks of global climate change continues 
to shape our customers’ sustainability goals and energy needs. Failure to meet 
those expectations or to adequately address the risks and external pressures 
from regulators, investors and other stakeholders may impact favorable 
outcomes in future rate cases and the results of operations for the Duke Energy 
Registrants.

The Duke Energy Registrants’ operating results may fluctuate on a 
seasonal and quarterly basis and can be negatively affected by changes 
in weather conditions and severe weather, including extreme weather 
conditions associated with climate change.

Electric power generation and natural gas distribution are generally 
seasonal businesses. In most parts of the U.S., the demand for power peaks 
during the warmer summer months, with market prices also typically peaking at 
that time. In other areas, demand for power peaks during the winter. Demand for 
natural gas peaks during the winter months. Further, extreme weather conditions 
such as hurricanes, droughts, heat waves, winter storms and severe weather 
associated with climate change could cause these seasonal fluctuations to be 
more pronounced. As a result, the overall operating results of the Duke Energy 
Registrants’ businesses may fluctuate substantially on a seasonal and quarterly 
basis and thus make period-to-period comparison less relevant.

Sustained severe drought conditions could impact generation by 
hydroelectric plants, as well as fossil and nuclear plant operations, as these 
facilities use water for cooling purposes and for the operation of environmental 
compliance equipment. Furthermore, destruction caused by severe weather 
events, such as hurricanes, flooding, tornadoes, severe thunderstorms, snow 
and ice storms, can result in lost operating revenues due to outages, property 
damage, including downed transmission and distribution lines, and additional 
and unexpected expenses to mitigate storm damage. The cost of storm 
restoration efforts may not be fully recoverable through the regulatory process.

The Duke Energy Registrants’ sales may decrease if they are unable to gain 
adequate, reliable and affordable access to transmission assets.

The Duke Energy Registrants depend on transmission and distribution 
facilities owned and operated by utilities and other energy companies to deliver 
electricity sold to the wholesale market. The FERC’s power transmission 
regulations require wholesale electric transmission services to be offered on 
an open-access, non-discriminatory basis. If transmission is disrupted, or if 
transmission capacity is inadequate, the Duke Energy Registrants’ ability to sell 
and deliver products may be hindered.

The different regional power markets have changing regulatory structures, 

which could affect growth and performance in these regions. In addition, the 
ISOs who oversee the transmission systems in regional power markets have 
imposed in the past, and may impose in the future, price limitations and other 
mechanisms to address volatility in the power markets. These types of price 
limitations and other mechanisms may adversely impact the profitability of the 
Duke Energy Registrants’ wholesale power marketing business.

20

PART IThe availability of adequate interstate pipeline transportation capacity and 
natural gas supply may decrease.

The Duke Energy Registrants purchase almost all of their natural gas 
supply from interstate sources that must be transported to the applicable 
service territories. Interstate pipeline companies transport the natural gas to 
the Duke Energy Registrants’ systems under firm service agreements that are 
designed to meet the requirements of their core markets. A significant disruption 
to interstate pipelines capacity or reduction in natural gas supply due to events 
including, but not limited to, operational failures or disruptions, hurricanes, 
tornadoes, floods, freeze off of natural gas wells, terrorist or cyberattacks or 
other acts of war or legislative or regulatory actions or requirements, including 
remediation related to integrity inspections, could reduce the normal interstate 
supply of natural gas and thereby reduce earnings. Moreover, if additional 
natural gas infrastructure, including, but not limited to, exploration and drilling 
rigs and platforms, processing and gathering systems, offshore pipelines, 
interstate pipelines and storage, cannot be built at a pace that meets demand, 
then growth opportunities could be limited.

Fluctuations in commodity prices or availability may adversely affect 
various aspects of the Duke Energy Registrants’ operations as well as their 
results of operations, financial position and cash flows.

The Duke Energy Registrants are exposed to the effects of market 
fluctuations in the price of natural gas, coal, fuel oil, nuclear fuel, electricity 
and other energy-related commodities as a result of their ownership of 
energy-related assets. Fuel costs are recovered primarily through cost-recovery 
clauses, subject to the approval of state utility commissions.

Additionally, the Duke Energy Registrants are exposed to risk that 

counterparties will not be able to fulfill their obligations. Disruption in the 
delivery of fuel, including disruptions as a result of, among other things, 
bankruptcies, transportation delays, weather, labor relations, force majeure 
events or environmental regulations affecting any of these fuel suppliers, could 
limit the Duke Energy Registrants’ ability to operate their facilities. Should 
counterparties fail to perform, the Duke Energy Registrants might be forced 
to replace the underlying commitment at prevailing market prices possibly 
resulting in losses in addition to the amounts, if any, already paid to the 
counterparties.

Certain of the Duke Energy Registrants’ hedge agreements may result in 

the receipt of, or posting of, collateral with counterparties, depending on the 
daily market-based calculation of financial exposure of the derivative positions. 
Fluctuations in commodity prices that lead to the return of collateral received 
and/or the posting of collateral with counterparties could negatively impact 
liquidity. Downgrades in the Duke Energy Registrants’ credit ratings could lead 
to additional collateral posting requirements. The Duke Energy Registrants 
continually monitor derivative positions in relation to market price activity.

Cyberattacks and data security breaches could adversely affect the Duke 
Energy Registrants’ businesses. 

Cybersecurity risks have increased in recent years as a result of the 
proliferation of new technologies and the increased sophistication, magnitude 
and frequency of cyberattacks and data security breaches. Duke Energy relies 
on the continued operation of sophisticated digital information technology 
systems and network infrastructure, which are part of an interconnected 
regional grid. Additionally, connectivity to the internet continues to increase 
through grid modernization and other operational excellence initiatives. Because 
of the critical nature of the infrastructure, increased connectivity to the internet 
and technology systems’ inherent vulnerability to disability or failures due 
to hacking, viruses, acts of war or terrorism or other types of data security 
breaches, the Duke Energy Registrants face a heightened risk of cyberattack 

from foreign or domestic sources and have been subject, and will likely continue 
to be subject, to attempts to gain unauthorized access to information and/or 
information systems or to disrupt utility operations through computer viruses 
and phishing attempts either directly or indirectly through its material vendors 
or related third parties. In the event of a significant cybersecurity breach on 
either the Duke Energy Registrants or with one of our material vendors or related 
third parties, the Duke Energy Registrants could (i) have business operations 
disrupted, including the disruption of the operation of our assets and the power 
grid, theft of confidential company, employee, retiree, shareholder, vendor or 
customer information, and general business systems and process interruption 
or compromise, including preventing the Duke Energy Registrants from servicing 
customers, collecting revenues or the recording, processing and/or reporting 
financial information correctly, (ii) experience substantial loss of revenues, 
repair and restoration costs, penalties and costs for lack of compliance with 
relevant regulations, implementation costs for additional security measures 
to avert future cyberattacks and other financial loss and (iii) be subject to 
increased regulation, litigation and reputational damage. While Duke Energy 
maintains insurance relating to cybersecurity events, such insurance is subject 
to a number of exclusions and may be insufficient to offset any losses, costs or 
damage experienced. Also, the market for cybersecurity insurance is relatively 
new and coverage available for cybersecurity events is evolving as the industry 
matures.

The Duke Energy Registrants are subject to standards enacted by the 
North American Electric Reliability Corporation and enforced by FERC regarding 
protection of the physical and cyber security of critical infrastructure assets 
required for operating North America’s bulk electric system. The Duke Energy 
Registrants are also subject to regulations set by the Nuclear Regulatory 
Commission regarding the protection of digital computer and communication 
systems and networks required for the operation of nuclear power plants. 
While the Duke Energy Registrants believe they are in compliance with such 
standards and regulations, the Duke Energy Registrants have from time to time 
been, and may in the future be, found to be in violation of such standards and 
regulations. In addition, compliance with or changes in the applicable standards 
and regulations may subject the Duke Energy Registrants to higher operating 
costs and/or increased capital expenditures as well as substantial fines for 
non-compliance.

Duke Energy Ohio’s and Duke Energy Indiana’s membership in an RTO 
presents risks that could have a material adverse effect on their results of 
operations, financial position and cash flows.

The rules governing the various regional power markets may change, 
which could affect Duke Energy Ohio’s and Duke Energy Indiana’s costs and/
or revenues. To the degree Duke Energy Ohio and Duke Energy Indiana incur 
significant additional fees and increased costs to participate in an RTO, their 
results of operations may be impacted. Duke Energy Ohio and Duke Energy 
Indiana may be allocated a portion of the cost of transmission facilities built 
by others due to changes in RTO transmission rate design. Duke Energy Ohio 
and Duke Energy Indiana may be required to expand their transmission system 
according to decisions made by an RTO rather than their own internal planning 
process. In addition, RTOs have been developing rules associated with the 
allocation and methodology of assigning costs associated with improved 
transmission reliability, reduced transmission congestion and firm transmission 
rights that may have a financial impact on the results of operations, financial 
position and cash flows of Duke Energy Ohio and Duke Energy Indiana.

As members of an RTO, Duke Energy Ohio and Duke Energy Indiana are 
subject to certain additional risks, including those associated with the allocation 
among RTO members, of losses caused by unreimbursed defaults of other 
participants in the RTO markets and those associated with complaint cases filed 
against an RTO that may seek refunds of revenues previously earned by RTO 
members.

21

PART IThe Duke Energy Registrants may not recover costs incurred to begin 
construction on projects that are canceled. 

LIQUIDITY, CAPITAL REQUIREMENTS AND COMMON STOCK RISKS

Duke Energy’s long-term strategy requires the construction of new 
projects, either wholly owned or partially owned, which involve a number of 
risks, including construction delays, nonperformance by equipment and other 
third-party suppliers, and increases in equipment and labor costs. To limit the 
risks of these construction projects, the Duke Energy Registrants enter into 
equipment purchase orders and construction contracts and incur engineering 
and design service costs in advance of receiving necessary regulatory 
approvals and/or siting or environmental permits. If any of these projects 
are canceled for any reason, including failure to receive necessary regulatory 
approvals and/or siting or environmental permits, significant cancellation 
penalties under the equipment purchase orders and construction contracts 
could occur. In addition, if any construction work or investments have been 
recorded as an asset, an impairment may need to be recorded in the event 
the project is canceled.

The Duke Energy Registrants are subject to risks associated with their 
ability to obtain adequate insurance at acceptable costs.

The financial condition of some insurance companies, actual or 

threatened physical or cyberattacks, and natural disasters, among other things, 
could have disruptive effects on insurance markets. The availability of insurance 
covering risks that the Duke Energy Registrants and their respective competitors 
typically insure against may decrease, and the insurance that the Duke Energy 
Registrants are able to obtain may have higher deductibles, higher premiums, 
and more restrictive policy terms. Further, the insurance policies may not cover 
all of the potential exposures or the actual amount of loss incurred. Any losses 
not covered by insurance, or any increases in the cost of applicable insurance, 
could adversely affect the results of operations, financial position or cash flows 
of the affected Duke Energy Registrant.

NUCLEAR GENERATION RISKS

Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida 
may incur substantial costs and liabilities due to their ownership and 
operation of nuclear generating facilities.

Ownership interests in and operation of nuclear stations by Duke Energy 

Carolinas, Duke Energy Progress and Duke Energy Florida subject them to 
various risks. These risks include, among other things: the potential harmful 
effects on the environment and human health resulting from the current or 
past operation of nuclear facilities and the storage, handling and disposal 
of radioactive materials; limitations on the amounts and types of insurance 
commercially available to cover losses that might arise in connection with 
nuclear operations; and uncertainties with respect to the technological and 
financial aspects of decommissioning nuclear plants at the end of their 
licensed lives.

Ownership and operation of nuclear generation facilities requires 

compliance with licensing and safety-related requirements imposed by the NRC. 
In the event of non-compliance, the NRC may increase regulatory oversight, 
impose fines or shut down a unit depending upon its assessment of the severity 
of the situation. Revised security and safety requirements promulgated by 
the NRC, which could be prompted by, among other things, events within or 
outside of the control of Duke Energy Carolinas, Duke Energy Progress and Duke 
Energy Florida, such as a serious nuclear incident at a facility owned by a third 
party, could necessitate substantial capital and other expenditures, as well 
as assessments to cover third-party losses. In addition, if a serious nuclear 
incident were to occur, it could have a material adverse effect on the results 
of operations, financial position, cash flows and reputation of the Duke Energy 
Registrants.

The Duke Energy Registrants rely on access to short-term borrowings and 
longer-term debt and equity markets to finance their capital requirements 
and support their liquidity needs. Access to those markets can be 
adversely affected by a number of conditions, many of which are beyond 
the Duke Energy Registrants’ control.

The Duke Energy Registrants’ businesses are significantly financed 

through issuances of debt and equity. The maturity and repayment profile of 
debt used to finance investments often does not correlate to cash flows from 
their assets. Accordingly, as a source of liquidity for capital requirements not 
satisfied by the cash flows from their operations and to fund investments 
originally financed through debt instruments with disparate maturities, the 
Duke Energy Registrants rely on access to short-term money markets as well as 
longer-term capital markets. The Subsidiary Registrants also rely on access to 
short-term intercompany borrowings. If the Duke Energy Registrants are not able 
to access debt or equity at competitive rates or at all, the ability to finance their 
operations and implement their strategy and business plan as scheduled could 
be adversely affected. An inability to access debt and equity may limit the Duke 
Energy Registrants’ ability to pursue improvements or acquisitions that they 
may otherwise rely on for future growth.

Market disruptions may increase the cost of borrowing or adversely affect 

the ability to access one or more financial markets. Such disruptions could 
include: economic downturns, the bankruptcy of an unrelated energy company, 
unfavorable capital market conditions, market prices for electricity and natural 
gas, actual or threatened terrorist attacks, or the overall health of the energy 
industry. The availability of credit under Duke Energy’s Master Credit Facility 
depends upon the ability of the banks providing commitments under the facility 
to provide funds when their obligations to do so arise. Systematic risk of the 
banking system and the financial markets could prevent a bank from meeting its 
obligations under the facility agreement.

Duke Energy maintains a revolving credit facility to provide backup for its 
commercial paper program and letters of credit to support variable rate demand 
tax-exempt bonds that may be put to the Duke Energy Registrant issuer at 
the option of the holder. The facility includes borrowing sublimits for the Duke 
Energy Registrants, each of whom is a party to the credit facility, and financial 
covenants that limit the amount of debt that can be outstanding as a percentage 
of the total capital for the specific entity. Failure to maintain these covenants at 
a particular entity could preclude Duke Energy from issuing commercial paper or 
the Duke Energy Registrants from issuing letters of credit or borrowing under the 
Master Credit Facility.

The Duke Energy Registrants must meet credit quality standards and 
there is no assurance they will maintain investment grade credit ratings. 
If the Duke Energy Registrants are unable to maintain investment grade 
credit ratings, they would be required under credit agreements to provide 
collateral in the form of letters of credit or cash, which may materially 
adversely affect their liquidity.

Each of the Duke Energy Registrants’ senior long-term debt issuances is 
currently rated investment grade by various rating agencies. The Duke Energy 
Registrants cannot ensure their senior long-term debt will be rated investment 
grade in the future.

If the rating agencies were to rate the Duke Energy Registrants below 

investment grade, borrowing costs would increase, perhaps significantly. 
In addition, the potential pool of investors and funding sources would likely 
decrease. Further, if the short-term debt rating were to fall, access to the 
commercial paper market could be significantly limited. 

A downgrade below investment grade could also require the posting of 

additional collateral in the form of letters of credit or cash under various credit, 
commodity and capacity agreements and trigger termination clauses in some 

22

PART Iinterest rate derivative agreements, which would require cash payments. All 
of these events would likely reduce the Duke Energy Registrants’ liquidity and 
profitability and could have a material effect on their results of operations, 
financial position and cash flows.

Non-compliance with debt covenants or conditions could adversely affect 
the Duke Energy Registrants’ ability to execute future borrowings.

The Duke Energy Registrants’ debt and credit agreements contain 
various financial and other covenants. Failure to meet those covenants 
beyond applicable grace periods could result in accelerated due dates and/or 
termination of the agreements.

Market performance and other changes may decrease the value of the NDTF 
investments of Duke Energy Carolinas, Duke Energy Progress and Duke 
Energy Florida, which then could require significant additional funding.

Ownership and operation of nuclear generation facilities also requires the 
maintenance of funded trusts that are intended to pay for the decommissioning 
costs of the respective nuclear power plants. The performance of the capital 
markets affects the values of the assets held in trust to satisfy these future 
obligations. Duke Energy Carolinas, Duke Energy Progress and Duke Energy 
Florida have significant obligations in this area and hold significant assets in 
these trusts. These assets are subject to market fluctuations and will yield 
uncertain returns, which may fall below projected rates of return. Although 
a number of factors impact funding requirements, a decline in the market 
value of the assets may increase the funding requirements of the obligations 
for decommissioning nuclear plants. If Duke Energy Carolinas, Duke Energy 
Progress and Duke Energy Florida are unable to successfully manage their NDTF 
assets, their results of operations, financial position and cash flows could be 
negatively affected.

Poor investment performance of the Duke Energy pension plan holdings 
and other factors impacting pension plan costs could unfavorably impact 
the Duke Energy Registrants’ liquidity and results of operations.

The costs of providing non-contributory defined benefit pension plans 
are dependent upon a number of factors, such as the rates of return on plan 
assets, discount rates, the level of interest rates used to measure the required 
minimum funding levels of the plans, future government regulation and required 
or voluntary contributions made to the plans. The Subsidiary Registrants 
are allocated their proportionate share of the cost and obligations related to 
these plans. Without sustained growth in the pension investments over time 
to increase the value of plan assets and, depending upon the other factors 
impacting costs as listed above, Duke Energy could be required to fund its 
plans with significant amounts of cash. Such cash funding obligations, and the 
Subsidiary Registrants’ proportionate share of such cash funding obligations, 
could have a material impact on the Duke Energy Registrants’ results of 
operations, financial position and cash flows. 

Duke Energy is a holding company and depends on the cash flows from its 
subsidiaries to meet its financial obligations.

Because Duke Energy is a holding company with no operations or cash 
flows of its own, its ability to meet its financial obligations, including making 
interest and principal payments on outstanding indebtedness and to pay 
dividends on its common stock, is primarily dependent on the net income 
and cash flows of its subsidiaries and the ability of those subsidiaries to pay 
upstream dividends or to repay borrowed funds. Prior to funding Duke Energy, its 
subsidiaries have regulatory restrictions and financial obligations that must be 
satisfied. These subsidiaries are separate legal entities and have no obligation 
to provide Duke Energy with funds. In addition, Duke Energy may provide capital 
contributions or debt financing to its subsidiaries under certain circumstances, 

23

which would reduce the funds available to meet its financial obligations, 
including making interest and principal payments on outstanding indebtedness 
and to pay dividends on Duke Energy’s common stock.

GENERAL RISKS

The failure of Duke Energy information technology systems, or the failure 
to enhance existing information technology systems and implement 
new technology, could adversely affect the Duke Energy Registrants’ 
businesses.

Duke Energy’s operations are dependent upon the proper functioning of 

its internal systems, including the information technology systems that support 
our underlying business processes. Any significant failure or malfunction of such 
information technology systems may result in disruptions of our operations. In the 
ordinary course of business, we rely on information technology systems, including 
the internet and third-party hosted services, to support a variety of business 
processes and activities and to store sensitive data, including (i) intellectual 
property, (ii) proprietary business information, (iii) personally identifiable 
information of our customers, employees, retirees and shareholders and (iv) data 
with respect to invoicing and the collection of payments, accounting, procurement, 
and supply chain activities. Our information technology systems are dependent 
upon global communications and cloud service providers, as well as their 
respective vendors, many of whom have at some point experienced significant 
system failures and outages in the past and may experience such failures and 
outages in the future. These providers’ systems are susceptible to cybersecurity 
and data breaches, outages from fire, floods, power loss, telecommunications 
failures, break-ins and similar events. Failure to prevent or mitigate data loss 
from system failures or outages could materially affect the results of operations, 
financial position and cash flows of the Duke Energy Registrants.

In addition to maintaining our current information technology systems, 

Duke Energy believes the digital transformation of its business is key to driving 
internal efficiencies as well as providing additional capabilities to customers. 
Duke Energy’s information technology systems are critical to cost-effective, 
reliable daily operations and our ability to effectively serve our customers. We 
expect our customers to continue to demand more sophisticated technology-
driven solutions and we must enhance or replace our information technology 
systems in response. This involves significant development and implementation 
costs to keep pace with changing technologies and customer demand. If we 
fail to successfully implement critical technology, or if it does not provide the 
anticipated benefits or meet customer demands, such failure could materially 
adversely affect our business strategy as well as impact the results of 
operations, financial position and cash flows of the Duke Energy Registrants. 

Potential terrorist activities, or military or other actions, could adversely 
affect the Duke Energy Registrants’ businesses.

The continued threat of terrorism and the impact of retaliatory military and 

other action by the U.S. and its allies may lead to increased political, economic 
and financial market instability and volatility in prices for natural gas and oil, 
which may have material adverse effects in ways the Duke Energy Registrants 
cannot predict at this time. In addition, future acts of terrorism and possible 
reprisals as a consequence of action by the U.S. and its allies could be directed 
against companies operating in the U.S. Information technology systems, 
transmission and distribution and generation facilities such as nuclear plants 
could be potential targets of terrorist activities or harmful activities by individuals 
or groups that could have a material adverse effect on Duke Energy Registrants’ 
businesses. In particular, the Duke Energy Registrants may experience increased 
capital and operating costs to implement increased security for their information 
technology systems, transmission and distribution and generation facilities, 
including nuclear power plants under the NRC’s design basis threat requirements. 
These increased costs could include additional physical plant security and 
security personnel or additional capability following a terrorist incident.

PART IFailure to attract and retain an appropriately qualified workforce could 
unfavorably impact the Duke Energy Registrants’ results of operations.

Certain events, such as an aging workforce, mismatch of skill set or 

complement to future needs, or unavailability of contract resources may lead 
to operating challenges and increased costs. The challenges include lack 
of resources, loss of knowledge base and the lengthy time required for skill 
development. In this case, costs, including costs for contractors to replace 
employees, productivity costs and safety costs, may increase. Failure to hire and 

adequately train replacement employees, including the transfer of significant 
internal historical knowledge and expertise to new employees, or future 
availability and cost of contract labor may adversely affect the ability to manage 
and operate the business, especially considering the workforce needs associated 
with nuclear generation facilities and new skills required to operate a modernized, 
technology-enabled power grid. If the Duke Energy Registrants are unable to 
successfully attract and retain an appropriately qualified workforce, their results 
of operations, financial position and cash flows could be negatively affected.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

ELECTRIC UTILITIES AND INFRASTRUCTURE

The following table provides information related to the Electric Utilities and Infrastructure’s generation stations as of December 31, 2020. The MW displayed in 

the table below are based on summer capacity. Ownership interest in all facilities is 100% unless otherwise indicated. 

Facility 

Duke Energy Carolinas
Oconee
McGuire
Catawba(a)
Belews Creek
Marshall
J.E. Rogers 
Lincoln Combustion Turbine (CT)
Allen
Rockingham CT
W.S. Lee Combined Cycle (CC)(b) 
Buck CC
Dan River CC
Mill Creek CT
W.S. Lee
W.S. Lee CT
Clemson CHP
Bad Creek
Jocassee
Cowans Ford
Keowee
Other small facilities (19 plants)
Distributed generation 

Total Duke Energy Carolinas

Plant Type

Primary Fuel

Location

Owned MW
Capacity

Nuclear
Nuclear
Nuclear
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Hydro
Hydro
Hydro
Hydro
Hydro
Renewable

Uranium
Uranium
Uranium
Coal/Gas
Coal/Gas
Coal/Gas
Gas/Oil
Coal
Gas/Oil
Gas
Gas
Gas
Gas/Oil
Gas
Gas/Oil
Gas
Water
Water
Water
Water
Water
Solar

SC
NC
SC
NC
NC
NC
NC
NC
NC
SC
NC
NC
SC
SC
SC
SC
SC
SC
NC
SC
NC/SC
NC

2,554 
2,316 
445 
2,220 
2,058 
1,388 
1,193 
1,098 
825 
686 
668 
662 
563 
170 
84 
13 
1,440 
780 
324 
152 
603 
38 

20,280 

24

PART I 
Facility 

Duke Energy Progress
Brunswick
Harris
Robinson
Roxboro
Smith CC
H.F. Lee CC
Wayne County CT
Smith CT
Mayo
L.V. Sutton CC
Asheville CC
Asheville CT
Darlington CT
Weatherspoon CT
L.V. Sutton CT (Black Start)
Blewett CT
Walters
Other small facilities (3)
Distributed generation
Asheville – Rock Hill Battery

Total Duke Energy Progress

Duke Energy Florida
Hines CC
Citrus County CC
Crystal River
Bartow CC
Anclote
Intercession City CT
Osprey CC
DeBary CT
Tiger Bay CC
Bayboro CT
Bartow CT
Suwannee River CT
University of Florida CoGen CT
Distributed generation

Total Duke Energy Florida

Duke Energy Ohio
East Bend
Woodsdale CT

Total Duke Energy Ohio

Duke Energy Indiana
Gibson(c)
Cayuga(d)
Edwardsport
Madison CT
Wheatland CT
Vermillion CT(e)
Gallagher
Noblesville CC
Henry County CT
Cayuga CT
Markland
Distributed generation 
Camp Atterbury Battery
Nabb Battery
Crane Battery

Total Duke Energy Indiana

Plant Type

Primary Fuel

Location

Owned MW
Capacity

Nuclear
Nuclear
Nuclear
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Hydro
Hydro
Renewable
Renewable

Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Renewable

Uranium
Uranium
Uranium
Coal
Gas/Oil
Gas/Oil
Gas/Oil
Gas/Oil
Coal
Gas/Oil
Gas/Oil
Gas/Oil
Gas/Oil
Gas/Oil
Gas/Oil
Oil
Water
Water
Solar
Storage

Gas/Oil
Gas
Coal
Gas/Oil
Gas
Gas/Oil
Gas/Oil
Gas/Oil
Gas/Oil
Oil
Gas/Oil
Gas
Gas
Solar

Fossil
Fossil

Coal
Gas/Propane

Coal
Coal/Oil
Coal
Gas
Gas
Gas
Coal
Gas/Oil
Gas/Oil
Gas/Oil
Water
Solar
Storage
Storage
Storage

Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Fossil
Hydro
Renewable
Renewable
Renewable
Renewable

25

NC
NC
SC
NC
NC
NC
NC
NC
NC
NC
NC
NC
SC
NC
NC
NC
NC
NC
NC
NC

FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL

KY
OH

IN
IN
IN
OH
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN

1,870 
964 
759 
2,439 
1,085 
888 
857 
772 
727 
607 
474 
320 
234 
124 
78 
52 
112 
115 
49 
7 

12,533 

2,054 
1,610 
1,422 
1,169 
1,013 
951 
583 
559 
200 
171 
168 
149 
43 
195 

10,287 

600 
476 

1,076 

2,822 
1,005 
595 
566 
450 
360 
280 
264 
129 
86 
51 
11 
4 
4 
4 

6,631 

PART I 
Totals by Type

Total Electric Utilities
Totals by Plant Type
Nuclear
Fossil 
Hydro
Renewable

Total Electric Utilities

Owned MW
Capacity

50,807 

8,908 
38,010 
3,577 
312 

50,807 

Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA. Duke Energy Carolinas’ ownership is 19.25% of the facility.
Jointly owned with NCEMC. Duke Energy Carolinas’ ownership is 87.27% of the facility.

(a) 
(b) 
(c)  Duke Energy Indiana owns and operates Gibson Station Units 1 through 4 and is a joint owner of unit 5 with WVPA and IMPA. Duke Energy Indiana operates unit 5 and owns 50.05%. 
(d) 
(e) 

Includes Cayuga Internal Combustion.
Jointly owned with WVPA. Duke Energy Indiana’s ownership is 62.5% of the facility.

The following table provides information related to Electric Utilities and Infrastructure’s electric transmission and distribution properties as of December 31, 2020.

Electric Transmission Lines
Miles of 500 to 525 kilovolt (kV)
Miles of 345 kV
Miles of 230 kV
Miles of 100 to 161 kV
Miles of 13 to 69 kV

Duke 
Energy

1,100 
1,100 
8,400 
12,400 
8,300 

Duke 
Energy 
Carolinas  

Duke 
Energy 
Progress  

Duke 
Energy 
Florida  

Duke
Energy

Ohio  

Duke
Energy
Indiana

600 
— 
2,700 
6,800 
3,000 

300 
— 
3,400 
2,600 
— 

200 
— 
1,600 
900 
2,200 

— 
400 
— 
700 
600 

— 
700 
700 
1,400 
2,500 

5,300 

Total conductor miles of electric transmission lines

31,300 

13,100 

6,300 

4,900 

1,700 

Electric Distribution Lines
Miles of overhead lines
Miles of underground line

Total conductor miles of electric distribution lines

Number of electric transmission and distribution substations

173,500 
108,900 

66,600 
40,400 

46,400 
31,800 

25,100 
21,100 

13,300 
6,200 

22,100 
9,400 

282,400 

107,000 

78,200 

46,200 

19,500 

31,500 

3,200 

1,400 

500 

500 

300 

500 

Substantially all of Electric Utilities and Infrastructure’s electric plant in service is mortgaged under indentures relating to Duke Energy Carolinas’, Duke Energy 

Progress’, Duke Energy Florida’s, Duke Energy Ohio’s and Duke Energy Indiana’s various series of First Mortgage Bonds.

GAS UTILITIES AND INFRASTRUCTURE

Gas Utilities and Infrastructure owns transmission pipelines and distribution mains that are generally underground, located near public streets and highways, 

or on property owned by others for which Duke Energy Ohio and Piedmont have obtained the necessary legal rights to place and operate facilities on such property 
located within the Gas Utilities and Infrastructure service territories. The following table provides information related to Gas Utilities and Infrastructure’s natural gas 
distribution. 

Miles of natural gas distribution and transmission pipelines
Miles of natural gas service lines

Duke
Energy

Ohio   Piedmont

7,400 
6,300 

26,800 
20,900 

Duke
Energy

34,200 
27,200 

26

PART I 
 
COMMERCIAL RENEWABLES

The following table provides information related to Commercial Renewables’ electric generation facilities as of December 31, 2020. The MW displayed in the 

table below are based on nameplate capacity. 

Plant Type

Primary Fuel

Location

Owned MW  
Capacity

Ownership
Interest (%)

Facility

Commercial Renewables – Wind
Los Vientos (five sites)
Mesteno(a)
Sweetwater IV
Frontier
Top of the World
Notrees 
Mesquite Creek
Campbell Hill
Ironwood 
Sweetwater V
North Allegheny
Laurel Hill 
Cimarron II
Kit Carson
Silver Sage
Happy Jack
Shirley

Total Renewables – Wind

Commercial Renewables – Solar
Holstein(a)
Rambler(a)
North Rosamond(a)
Lapetus(a)
Conetoe II
Palmer(a)
Seville I & II
Rio Bravo I & II
Wildwood I & II
Kelford
Dogwood 
Halifax Airport
Pasquotank
Shawboro
Caprock
Creswell Alligood
Pumpjack
Longboat
Shoreham(a)
Washington White Post
Whitakers
Highlander I & II
Other small solar(a)

Total Renewables – Solar

Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable

Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable
Renewable

Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind
Wind

Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar
Solar

TX
TX
TX
OK
WY
TX
TX
WY
KS
TX
PA
PA
KS
CO
WY
WY
WI

TX
TX
CA
TX
NC
CO
CA
CA
CA
NC
NC
NC
NC
NC
NM
NC
CA
CA
NY
NC
NC
CA
Various

Various

TX

OH

465 
202 
113 
103 
102 
78 
54 
50 
44 
38 
36 
35 
34 
26 
21 
15 
10 

1,426 

200 
200 
150 
100 
80 
60 
34 
27 
23 
22 
20 
20 
20 
20 
17 
14 
13 
13 
13 
12 
12 
11 
193 
1,274 

43 
43 

18 

2 

20 

51% 
100%
47%
51%
51%
51%
26%
51%
26%
47%
51%
51%
26%
51%
51%
51%
51%

100%
100%
100%
100%
100%
100%
67%
67%
67%
100%
100%
100%
100%
100%
67%
100%
67%
67%
51%
100%
100%
51%
Various

100%

51% 

100%

Commercial Renewables – Fuel Cells(a)

Total Renewables – Fuel Cells

Commercial Renewables – Energy Storage

Notrees Battery Storage

Beckjord Battery Storage

Total Renewables – Energy Storage

Renewable

Fuel Cell

Renewable

Renewable

Storage

Storage

27

PART ITotals by Type

Wind
Solar
Fuel Cells
Energy Storage

Total Commercial Renewables(b)

Owned MW
Capacity

1,426 
1,274 
43 
20 

2,763 

(a)  Certain projects, including projects within Other small solar, are in tax-equity structures where investors have differing interests in the project’s economic attributes. 100% of the tax-equity project’s capacity is included in the 

table above.

(b)  Net proportion of MW capacity in operation is 3,937, which represents the amount managed or owned by Duke Energy.

OTHER

Duke Energy owns approximately 8 million square feet and leases approximately 2 million square feet of corporate, regional and district office space spread 

throughout its service territories.

ITEM 3. LEGAL PROCEEDINGS

For information regarding legal proceedings, including regulatory and environmental matters, see Note 3, “Regulatory Matters,” and Note 4, “Commitments and 

Contingencies,” to the Consolidated Financial Statements.

MTBE Litigation

On December 15, 2017, the state of Maryland filed suit in Baltimore City Circuit Court against Duke Energy Merchants and other defendants alleging 

contamination of state waters by MTBE leaking from gasoline storage tanks. MTBE is a gasoline additive intended to increase the oxygen levels in gasoline and make 
it burn cleaner. The case was removed from Baltimore City Circuit Court to federal District Court. Initial motions to dismiss filed by the defendants were denied by the 
court on September 4, 2019, and the matter is now in discovery. On December 18, 2020, the plaintiff and defendants selected 50 focus sites, none of which have any 
ties to Duke Energy Merchants, and discovery is likely to be specific to those sites. Duke Energy cannot predict the outcome of this matter.

ITEM 4. MINE SAFETY DISCLOSURES

This is not applicable for any of the Duke Energy Registrants.

28

PART I 
ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF 
EQUITY SECURITIES

The common stock of Duke Energy is listed and traded on the NYSE (ticker symbol DUK). As of January 31, 2021, there were 136,857 Duke Energy common 

stockholders of record. For information on dividends, see the “Dividend Payments” section of Management’s Discussion and Analysis.

There is no market for the common equity securities of the Subsidiary Registrants, all of which are directly or indirectly owned by Duke Energy. See Note 1, 
“Summary of Significant Accounting Policies,” to the Consolidated Financial Statements for information on the 2021 sale of a minority interest in Duke Energy Indiana.

Securities Authorized for Issuance Under Equity Compensation Plans

See Item 12 of Part III within this Annual Report for information regarding Securities Authorized for Issuance Under Equity Compensation Plans.

Issuer Purchases of Equity Securities for Fourth Quarter 2020

There were no repurchases of equity securities during the fourth quarter of 2020.

Stock Performance Graph

The following performance graph compares the cumulative TSR from Duke Energy Corporation common stock, as compared with the Standard & Poor’s 500 
Stock Index (S&P 500) and the Philadelphia Utility Index for the past five years. The graph assumes an initial investment of $100 on December 31, 2015, in Duke 
Energy common stock, in the S&P 500 and in the Philadelphia Utility Index and that all dividends were reinvested. The stockholder return shown below for the five-
year historical period may not be indicative of future performance.

$250

$200

$150

$100

$50

$0

2015

2016

2017

2018

2019

2020

Duke Energy Corporation

Philadelphia Utility Index

S&P 500

NYSE CEO Certification

Duke Energy has filed the certification of its Chief Executive Officer and Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 as 

exhibits to this Annual Report on Form 10-K for the year ended December 31, 2020.

29

PART IITEM 6. SELECTED FINANCIAL DATA

This is not applicable for any of the Duke Energy Registrants.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Management’s Discussion and Analysis includes financial information 
prepared in accordance with GAAP in the U.S., as well as certain non-GAAP 
financial measures such as adjusted earnings and adjusted EPS discussed 
below. Generally, a non-GAAP financial measure is a numerical measure 
of financial performance, financial position or cash flows that excludes (or 
includes) amounts that are included in (or excluded from) the most directly 
comparable measure calculated and presented in accordance with GAAP. The 
non-GAAP financial measures should be viewed as a supplement to, and not  
a substitute for, financial measures presented in accordance with GAAP.  
Non-GAAP measures as presented herein may not be comparable to similarly 
titled measures used by other companies.

The following combined Management’s Discussion and Analysis of 
Financial Condition and Results of Operations is separately filed by Duke 
Energy Corporation and its subsidiaries. Duke Energy Carolinas, LLC, Progress 
Energy, Inc., Duke Energy Progress, LLC, Duke Energy Florida, LLC, Duke Energy 
Ohio, Inc., Duke Energy Indiana, LLC and Piedmont Natural Gas Company, Inc. 
However, none of the registrants make any representation as to information 
related solely to Duke Energy or the subsidiary registrants of Duke Energy other 
than itself. 

Management’s Discussion and Analysis should be read in conjunction 

with the Consolidated Financial Statements and Notes for the years ended 
December 31, 2020, 2019 and 2018.

See “Item 7. Management’s Discussion and Analysis of Financial 
Condition and Results of Operations,” in Duke Energy’s Annual Report on Form 
10-K for the year ended December 31, 2019, filed with the SEC on February 
20, 2020, for a discussion of variance drivers for the year ended December 31, 
2019, as compared to December 31, 2018.

Financial Results

DUKE ENERGY

Duke Energy is an energy company headquartered in Charlotte, North 

Carolina. Duke Energy operates in the U.S. primarily through its wholly owned 
subsidiaries, Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, 
Duke Energy Ohio, Duke Energy Indiana and Piedmont. When discussing Duke 
Energy’s consolidated financial information, it necessarily includes the results 
of the Subsidiary Registrants, which along with Duke Energy, are collectively 
referred to as the Duke Energy Registrants.

Executive Overview

At Duke Energy the fundamentals of our business are strong and allow 
us to deliver growth in earnings and dividends in a low-risk, predictable and 
transparent way. In 2020, we met our near-term financial commitments and 
continued to provide safe and reliable service while managing the impacts of the 
COVID-19 pandemic.

In early 2021, we continued to position the company for sustainable  
long-term growth, executing an important coal ash settlement agreement in 
North Carolina and announcing the $2 billion sale of a minority interest in Duke 
Energy Indiana, providing a source of efficient capital at an attractive valuation. 
We remain focused on a business portfolio that will deliver a reliable and 
growing dividend with 2020 representing the 94th consecutive year Duke Energy 
paid a cash dividend on its common stock. With these recent announcements, 
we also increased our long-term adjusted EPS growth rate to 5% to 7% through 
2025. This growth is supported by our $59 billion capital plan from 2021 to 
2025, clean energy investments that benefit our customers, timely cost-recovery 
mechanisms in most jurisdictions and our ability to effectively manage our 
cost structure. 

Annual Earnings (in millions)

Annual Earnings Per Share

Net Income Available to Duke Energy Corporation
common stockholders (GAAP)

Net Income Available to Duke Energy Corporation common
stockholders per basic share (GAAP)

Adjusted Earnings (a)

Adjusted Earnings Per Share (a)

$3,707

$3,706

$3,771

$5.06

$5.06

$5.12

$1,270

$1.72

2019

2020

2019

2020

(a)  See Results of Operations below for Duke Energy’s definition of adjusted earnings and adjusted EPS as well as a reconciliation of this non-GAAP financial measure to net income available to Duke Energy and net income 

available to Duke Energy per basic share.

30

PART IIDuke Energy’s 2020 Net Income Available to Duke Energy Corporation 

(GAAP Reported Earnings) were impacted by: regulatory settlements related to 
coal ash cost recovery in Electric Utilities and Infrastructure; the cancellation 
of the ACP pipeline in Gas Utilities and Infrastructure; and growth in project 
investments in Commercial Renewables. See “Results of Operations” below for 
a detailed discussion of the consolidated results of operations and a detailed 
discussion of financial results for each of Duke Energy’s reportable business 
segments, as well as Other.

2020 Areas of Focus and Accomplishments

Clean Energy Transformation. Our industry has been undergoing an 

incredible transformation and 2020 was a milestone year for our company 
where we articulated a clear vision for the future and outlined investments to 
achieve a clean energy future for our customers. We continue to transform the 
customer experience by generating cleaner energy, modernizing the energy grid, 
and expanding natural gas infrastructure.

Generating Cleaner Energy

In October 2020, we held our first-ever Environmental, Social, and 
Governance (ESG) Day for investors, successfully outlining our climate strategy 
and highlighting our strong progress to date in reducing carbon (a greater than 
40% reduction from 2005) and our commitment to do more (at least 50% 
reduction by 2030 and net-zero by 2050). In the Carolinas, we participated in 
extensive stakeholder processes focused on carbon reduction and regulatory 
reform and filed comprehensive IRP consistent with that strategy. Our planned 
coal retirements and transition to cleaner energy sources in the Carolinas are 
some of the largest in the industry. We also committed to an all-electric light-
duty fleet and 50% of all medium- and heavy-duty vehicles by 2030 – a pledge 
that also leads our industry. Our commitment for 2030 includes retiring plants, 
operating our existing carbon-free resources and investing in renewables, our 
energy delivery system, and natural gas infrastructure. As we look beyond 2030, 
we will need additional tools to continue our progress. We will work actively to 
advocate for research and development of carbon-free, dispatchable resources. 
That includes longer-duration energy storage, advanced nuclear technologies, 
carbon capture and zero-carbon fuels.

Modernizing the Power Grid

Our grid improvement programs continue to be a key component of our 

growth strategy. Modernization of the electric grid, including smart meters, 
storm hardening, self-healing and targeted undergrounding, helps to ensure the 
system is better prepared for severe weather, improves the system’s reliability 
and flexibility, and provides better information and services for customers. 
In 2020, 98% of our jurisdictions were equipped with smart meters and we 
remain on track to be fully deployed across all regions by the end of this year. 
We continue to expand our self-optimizing grid capabilities, and in 2020, smart, 
self-healing technologies helped to avoid more than 800,000 extended customer 
outages across our six-state electric service area, saving customers more than 
1.8 million hours of lost outage time. Duke Energy also has a demonstrated 
track record of driving efficiencies and productivity into the business and we 
continue to leverage new technology, digital tools and data analytics across the 
business in response to a transforming landscape. 

Expanding Natural Gas Infrastructure

In July 2020, Duke Energy and Dominion announced the cancellation of 
the ACP pipeline. Litigation risks and delays presented too much uncertainty 
on our ability to economically complete the project on schedule to meet our 
customers’ needs. Additionally, Dominion reached a decision to exit their natural 
gas transmission business, further impeding our ability to consider ongoing 
investment in the project. The Company remains committed to pursuing natural 

gas infrastructure investments and continues to explore additional resources 
in eastern North Carolina for the Piedmont system and securing more transport 
capacity to support power generation. Construction is expected to be completed 
this year on a liquefied natural gas facility in Robeson County, North Carolina, on 
property Piedmont owns. This investment will help Piedmont provide a reliable 
gas supply to customers during peak usage periods and protect customers from 
price volatility when there is a higher-than-normal demand for natural gas. 
In the fall of 2020, recognizing the continued importance of natural gas to our 
plans, we announced a net-zero methane emission goal by 2030 related to our 
gas distribution business, as well as our commitment to lead on reduction of 
upstream methane emissions through work with our natural gas supply chain. 

Constructive Regulatory and Legislative Outcomes. One of our 
long-term strategic goals is to achieve modernized regulatory constructs in our 
jurisdictions. Modernized constructs provide benefits, which include improved 
earnings and cash flows through more timely recovery of investments, as well 
as stable pricing for customers. 

In 2020, we conducted the bulk of proceedings related to our North 
Carolina rate cases for both Duke Energy Carolinas and Duke Energy Progress 
and achieved a partial settlement with the North Carolina Public Staff and ten 
other intervening parties. In January 2021, Duke Energy Carolinas and Duke 
Energy Progress reached an important settlement agreement, which subject to 
NCUC approval, resolves historical coal ash prudence and cost recovery issues 
and provides clarity on coal ash cost recovery for the next decade. In 2020, we 
also achieved constructive rate case outcomes in Indiana (our first rate base 
request in 15 years) and Kentucky (electric). We have a multiyear rate plan in 
Florida and in January 2021 reached a constructive settlement agreement with 
key consumer groups, subject to FPSC approval, to bring additional certainty to 
rates through 2024, In addition, grid investment riders in the Midwest enable 
more timely cost recovery and earnings growth. 

Customer Satisfaction. Duke Energy continues to transform the 
customer experience through our use of customer data to better inform 
operational priorities and performance levels. This data-driven approach allows 
us to identify the investments that are the most important to the customer 
experience. Our work has been recognized by our customers with external 
measures showing Duke Energy is improving customer satisfaction at a rate 
greater than the utility industry. Additionally, in 2020, we surpassed our internal 
target that measures customer satisfaction by approximately 14%.

Operational Excellence, Safety and Reliability. The reliable and safe 

operation of our power plants, electric distribution system and natural gas 
infrastructure in our communities is foundational to our customers, our financial 
results and our credibility with stakeholders. Our regulated generation fleet 
and nuclear sites had strong performance throughout the year and our electric 
distribution system performed well. The safety of our workforce is a core value. Our 
employees delivered strong safety results in 2020, and we are at or near the top of 
our industry. Additionally, the 2020 Atlantic hurricane season was incredibly active 
and marked the fifth consecutive year of above-average damaging storms. Our 
ability to effectively handle all facets of the 2020 storm response efforts, including 
navigating COVID-19 protocols, is a testament to our team’s extensive preparation 
and coordination, applying lessons learned from previous storms, and to on-the-
ground management throughout the restoration efforts. 

Leading Through COVID-19. COVID-19 impacted all that we 
accomplished in 2020 and demonstrated our resiliency and agility: 

• As the pandemic spread, stay-at-home orders coupled with 

recessionary economic conditions caused overall retail electric sales to 
decline by approximately 2%. To offset this challenge, as well as mild 
weather and other COVID-related costs, we successfully achieved the 
high end of our goal of $400 million to $450 million of broad-based 
O&M reductions and other mitigating actions. The Company’s results 
were within its adjusted EPS guidance range and we expect to sustain 
approximately $200 million of the 2020 O&M cost mitigation into 2021 
forward.

31

PART II• Duke Energy kept electricity and gas flowing while voluntarily making 
significant accommodations for our customers. We led the way in our 
sector nationally, suspending all nonpay disconnects in all jurisdictions 
and waiving late payment fees and other fees until the national state of 
emergency was lifted. In the fall, we began returning to normal business 
practices, ensuring diligent communication with our customers and 
providing flexible payment arrangements.

• We ensured the physical safety of our workers and provided support 

for our employees. As cases spiked nationally, we deployed COVID-19 
safety protocols for our front-line essential workers and moved 18,000 
colleagues to remote work. Our COVID-19 Case Management Team 
managed exposures of our workforce and IT ensured our networks could 
handle the remote work while strengthening cyber protection. Under 
our COVID-19 protocols, our front-line employees completed 150 fossil 
and nuclear outages, executed large major projects, restored service 
from storms and hurricanes, and managed high-water events. Overall, 
our operations continued, and our team completed their work with 
excellence. 

Duke Energy Objectives – 2021 and Beyond

Duke Energy will continue to deliver exceptional value to customers, be an 
integral part of the communities in which we do business and provide attractive 
returns to investors. We have an achievable, long-term strategy in place, and it 
is producing tangible results, yet the industry in which we operate is becoming 
more and more dynamic. We are adjusting, where necessary, and accelerating 
our focus in key areas to ensure the company is well positioned to be successful 
for many decades into the future. As we look ahead to 2021, our plans include:

• Continuing to place the customer at the center of all that we do, which 

includes providing customized products and solutions

• Strengthening our relationships with all our vast stakeholders in the 

communities in which we operate and invest

• Generating cleaner energy and working to achieve net-zero carbon 

emissions by 2050 and net zero methane emissions by 2030

• Modernizing and strengthening a green-enabled energy grid

• Expanding our natural gas infrastructure

• Maintaining the safety of our communities and employees

• Deploying digital tools across our business

Matters Impacting Future Results

The matters discussed herein could materially impact the future operating 

results, financial condition and cash flows of the Duke Energy Registrants and 
Business Segments.

Regulatory Matters

Coal Ash Costs

As a result of the NCDEQ settlement on December 31, 2019, Duke 
Energy Carolinas and Duke Energy Progress agreed to excavate seven of the 
nine remaining coal ash basins in North Carolina with ash moved to on-site 
lined landfills. At the two remaining basins, uncapped basin ash will be 
excavated and moved to lined landfills. The majority of spend is expected to 
occur over the next 15-20 years. In January 2021, Duke Energy Carolinas and 
Duke Energy Progress reached a settlement agreement on recovery of coal 
ash costs as outlined in Note 3, “Regulatory Matters,” which is subject to 

review and approval of the NCUC. The company agreed not to seek recovery 
of approximately $1 billion of deferred coal ash expenditures and Duke Energy 
Carolinas and Duke Energy Progress took a charge of approximately $500 million 
each.

In 2019, Duke Energy Carolinas and Duke Energy Progress received 
orders from the PSCSC denying recovery of certain coal ash costs. Duke 
Energy Carolinas and Duke Energy Progress have appealed these decisions to 
the South Carolina Supreme Court and those appeals are pending. An order 
from regulatory or judicial authorities that rejects our proposed settlement or 
disallows recovery of costs related to closure of these ash basins could have an 
adverse impact on future results.

Duke Energy Indiana has interpreted the CCR rule to identify the coal 

ash basin sites impacted and has assessed the amounts of coal ash subject 
to the rule and a method of compliance. In 2020, the Hoosier Environmental 
Council filed a petition challenging the Indiana Department of Environmental 
Management’s partial approval of Duke Energy Indiana’s ash pond closure 
plans. Interpretation of the requirements of the CCR rule is subject to further 
legal challenges and regulatory approvals, which could result in additional ash 
basin closure requirements, higher costs of compliance and greater AROs. 
Additionally, Duke Energy Indiana has retired facilities that are not subject to the 
CCR rule. Duke Energy Indiana may incur costs at these facilities to comply with 
environmental regulations or to mitigate risks associated with on-site storage 
of coal ash. 

Storm Costs

Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida’s 
service territories were impacted by several named storms in 2018. Hurricane 
Florence, Hurricane Michael and Winter Storm Diego caused flooding, extensive 
damage and widespread power outages to the service territories of Duke Energy 
Carolinas and Duke Energy Progress. Duke Energy Florida’s service territory 
was also impacted by Hurricane Michael, a Category 5 hurricane and the most 
powerful storm to hit the Florida Panhandle in recorded history. In September 
2019, Hurricane Dorian impacted Duke Energy Progress and Duke Energy 
Florida’s service territories. In 2020, Duke Energy Carolinas and Duke Energy 
Progress reached partial settlements in the 2019 North Carolina rates cases by 
filing a petition to securitize deferred storm costs, which is subject to review and 
approval of the NCUC. In January 2021, Duke Energy Florida filed a settlement 
agreement with the FPSC, which if approved, allows recovery of the remaining 
storm cost balance for hurricanes Michael and Dorian. An order from regulatory 
authorities disallowing the deferral and future recovery of storm restoration 
costs could have an adverse impact.

Grid Improvement Costs

Duke Energy Carolinas received an order from the NCUC in 2018, which 
denied the Grid Rider Stipulation and deferral treatment of grid improvement 
costs. Duke Energy Carolinas and Duke Energy Progress have petitioned for 
deferral of future grid improvement costs in their 2019 rate cases. Partial 
settlements filed with the NCUC in July 2020 included the allowance for deferral 
for certain grid projects placed in service from June 2020 through December 
2022. There could be adverse impacts if grid improvement costs are not 
ultimately approved for recovery and/or deferral treatment.

Rate Cases

In 2019, Duke Energy Carolinas and Duke Energy Progress filed general 
rate cases with the NCUC. Several partial settlement agreements have been 
filed with the NCUC and are awaiting approval. The outcome of these rate cases 
could have a material impact.

32

PART IIMGP

The PUCO has issued an order authorizing recovery of MGP costs at 
certain sites in Ohio with a deadline to complete the MGP environmental 
investigation and remediation work prior to December 31, 2016. This deadline 
was subsequently extended to December 31, 2019. Duke Energy Ohio has filed 
for a request for extension of the deadline. A hearing on that request has not 
been scheduled. Disallowance of costs incurred, failure to complete the work by 
the deadline or failure to obtain an extension from the PUCO could result in an 
adverse impact.

For additional information, see Note 3 to the Consolidated Financial 

Statements, “Regulatory Matters.”

Sale of Minority Interest in Duke Energy Indiana

In January 2021, Duke Energy entered into a definitive agreement 
providing for the sale of a 19.9% minority interest in Duke Energy Indiana with 
an affiliate of GIC, Singapore’s sovereign wealth fund. The sale is subject to 
the satisfaction of certain customary conditions described in the investment 
agreement, including receipt of the approval of the FERC and completion of 
review by the Committee on Foreign Investments in the United States. Failure to 
obtain related approvals or satisfy the conditions in the investment agreement 
could result in the termination of the transaction and could result in an adverse 
impact. For additional information, see Note 1 to the Consolidated Financial 
Statements, “Summary of Significant Accounting Policies.”

Commercial Renewables

Duke Energy continues to monitor recoverability of renewable merchant 
plants located in the Electric Reliability Council of Texas West market and PJM, 
due to declining market pricing and declining long-term forecasted energy 
prices, primarily driven by lower forecasted natural gas prices. Based on the 
most recent recoverability test, the carrying value approximated the aggregate 
estimated future undiscounted cash flows for the assets under review. A 
continued decline in energy market pricing would likely result in a future 
impairment. Impairment of these assets could result in adverse impacts. For 
additional information, see Note 10 to the Consolidated Financial Statements, 
“Property, Plant and Equipment.”

In February 2021, a severe winter storm impacted certain Commercial 

Renewables assets in Texas. Extreme weather conditions limited the ability for 
these solar and wind facilities to generate and sell electricity into the Electric 
Reliability Council of Texas market. Both lost revenues and higher than expected 
purchased power costs are expected to negatively impact the operating results 
of these generating units. The estimated financial impact of the storm is 
expected to have a material impact on the Commercial Renewables segment’s 
2021 operating results. See Note 25 to the Consolidated Financial Statements, 
“Subsequent Events.”

COVID-19

Duke Energy cannot predict the extent to which the COVID-19 pandemic 

will impact its results of operations, financial position and cash flows in the 
future. Duke Energy will continue to actively monitor the impacts of COVID-19 
including the economic slowdown caused by business closures or by reduced 
operations of businesses and governmental agencies. The pandemic and 
resultant economic slowdown continues to cause an increase in certain costs, 
such as bad debt, and a reduction in the demand for energy. Duke Energy 

has mitigation plans in place to partially offset these impacts, and the ability 
to execute these plans is critical to preserving future financial results. The 
Company is in the process of reviewing the long-term real estate strategy due 
to a potential change of in-office work policies after the COVID-19 pandemic. 
The plan may result in a reduction of physical work space which could 
create accounting impacts starting in 2021. Accounting impacts may include 
reassessments of lease terms and lease modifications which could result 
in termination penalties, as well as, asset impairments on property, plant 
and equipment. See Item 1A. Risk Factors for discussion of risks associated 
with COVID-19 and Liquidity and Capital Resources within this section for a 
discussion of liquidity impacts of COVID-19.

Within this Item 7, see Liquidity and Capital Resources for a discussion on 

risks associated with the Tax Act.

Results of Operations

Non-GAAP Measures

Management evaluates financial performance in part based on non-GAAP 
financial measures, including adjusted earnings and adjusted EPS. These items 
represent income from continuing operations available to Duke Energy common 
stockholders in dollar and per-share amounts, adjusted for the dollar and 
per-share impact of special items. As discussed below, special items include 
certain charges and credits, which management believes are not indicative of 
Duke Energy’s ongoing performance. Management believes the presentation of 
adjusted earnings and adjusted EPS provides useful information to investors, 
as it provides them with an additional relevant comparison of Duke Energy’s 
performance across periods. 

Management uses these non-GAAP financial measures for planning 

and forecasting, and for reporting financial results to the Board of Directors, 
employees, stockholders, analysts and investors. Adjusted EPS is also used as 
a basis for employee incentive bonuses. The most directly comparable GAAP 
measures for adjusted earnings and adjusted EPS are GAAP Reported Earnings 
and EPS Available to Duke Energy Corporation common stockholders (GAAP 
Reported EPS), respectively. 

Special items included in the periods presented include the following, 

which management believes do not reflect ongoing costs: 

• Gas Pipeline Investments represents costs related to the cancellation of 

the ACP pipeline and additional exit costs related to Constitution.

• Regulatory Settlements represents charges related to Duke Energy 

Carolinas’ and Duke Energy Progress’ CCR Settlement Agreement and 
the partial settlements in the 2019 North Carolina rate cases.

• Severance represents the reversal of 2018 costs, which were deferred 
as a result of a partial settlement in the Duke Energy Carolinas and the 
Duke Energy Progress 2019 North Carolina rate cases.

• Impairment Charges represents a reduction of a prior year impairment 

at Citrus County CC and an OTTI on the remaining investment in 
Constitution.

Duke Energy’s adjusted earnings and adjusted EPS may not be 
comparable to similarly titled measures of another company because other 
companies may not calculate the measures in the same manner.

33

PART IIReconciliation of GAAP Reported Amounts to Adjusted Amounts

The following table presents a reconciliation of adjusted earnings and adjusted EPS to the most directly comparable GAAP measures.

(in millions, except per share amounts)

GAAP Reported Earnings/EPS
Adjustments to Reported:

Gas Pipeline Investments(a)
Regulatory Settlements(b)
Severance(c)
Impairment Charges(d)
Discontinued Operations

Adjusted Earnings/Adjusted EPS

(a)  Net of tax benefit of $399 million.
(b)  Net of tax benefit of $263 million.
(c)  Net of tax expense of $23 million.
(d)  Net of tax expense of $3 million.

Years Ended December 31,

2020

2019

Earnings

$ 1,270

1,711
872
(75)
—
(7)
$ 3,771

EPS

$ 1.72

2.32
1.19
(0.10)
—
(0.01)
$ 5.12

Earnings

$ 3,707

—
—
—
(8)
7
$ 3,706

EPS

$ 5.06

—
—
—
(0.01)
0.01
$ 5.06

Year Ended December 31, 2020, as compared to 2019

SEGMENT RESULTS

GAAP Reported EPS was $1.72 for the year ended December 31, 2020, 
compared to $5.06 for the year ended December 31, 2019. The decrease in 
GAAP Reported Earnings/EPS was primarily due to the cancellation of the ACP 
pipeline and the CCR Settlement Agreement filed with the NCUC.

As discussed and shown in the table above, management also evaluates 
financial performance based on adjusted EPS. Duke Energy’s adjusted EPS was 
$5.12 for the year ended December 31, 2020, compared to $5.06 for the year 
ended December 31, 2019. The increase in Adjusted Earnings/Adjusted EPS 
was primarily due to positive rate case contributions, growth in wholesale, lower 
operations and maintenance expense in response to the pandemic and growth 
in Commercial Renewables, partially offset by higher depreciation expense from 
a growing asset base, impacts of the pandemic, mild weather and the loss of 
ACP earnings.

The remaining information presented in this discussion of results of 
operations is on a GAAP basis. Management evaluates segment performance 
based on segment income. Segment income is defined as income from 
continuing operations net of income attributable to noncontrolling interests and 
preferred stock dividends. Segment income includes intercompany revenues and 
expenses that are eliminated in the Consolidated Financial Statements.

Duke Energy’s segment structure includes the following segments: Electric 

Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial 
Renewables. The remainder of Duke Energy’s operations is presented as Other. 
See Note 2 to the Consolidated Financial Statements, “Business Segments,” for 
additional information on Duke Energy’s segment structure.

Electric Utilities and Infrastructure

(in millions)

Operating Revenues 
Operating Expenses 
Fuel used in electric generation and purchased power
Operations, maintenance and other
Depreciation and amortization
Property and other taxes
Impairment charges

Total operating expenses

Gains on Sales of Other Assets and Other, net 
Operating Income 
Other Income and Expenses, net
Interest Expense 
Income Before Income Taxes 
Income Tax Expense 
Segment Income 

Duke Energy Carolinas GWh sales
Duke Energy Progress GWh sales
Duke Energy Florida GWh sales
Duke Energy Ohio GWh sales 
Duke Energy Indiana GWh sales 
Total Electric Utilities and Infrastructure GWh sales 
Net proportional MW capacity in operation 

Years Ended December 31,

2020

$ 21,720 

6,128 
5,391 
4,068 
1,188 
971 
17,746 
11 
3,985 
344 
1,320 
3,009 
340 
2,669 

84,574 
65,240 
42,490 
23,484 
30,528 
246,316 
50,419 

$

2019

$ 22,831 

6,904 
5,497 
3,951 
1,175 
(8)
17,519 
1 
5,313 
353 
1,345 
4,321 
785 
$ 3,536 

89,920 
68,356 
42,173 
24,729 
31,886 
257,064 
50,070 

Variance

$ (1,111)

(776)
(106)
117 
13 
979 
227 
10 
(1,328)
(9)
(25)
(1,312)
(445)
(867)

(5,346)
(3,116)
317 
(1,245)
(1,358)
(10,748)
349 

$

34

PART IIYear Ended December 31, 2020, as compared to 2019 

Electric Utilities and Infrastructure’s variance is primarily due to 
impairment charges and revenue reductions related to the CCR settlement 
agreement filed with the NCUC to resolve coal ash cost recovery issues, 
unfavorable weather and lower volumes driven by impacts from the COVID-19 
pandemic, partially offset by base rate adjustments in various jurisdictions. The 
following is a detailed discussion of the variance drivers by line item.

Operating Revenues. The variance was driven primarily by:

• an $826 million decrease in fuel revenues driven by lower sales 

volumes as well as an accelerated refund of fuel costs at Duke Energy 
Florida in response to the COVID-19 pandemic;

• a $237 million decrease in wholesale revenue primarily driven by the 
CCR Settlement Agreement filed with the NCUC in January 2021 and 
decreased volumes;

• a $207 million decrease in retail sales, net of fuel revenues, due to 

unfavorable weather;

• a $130 million decrease in rider revenues from EE programs;

• a $44 million decrease in nuclear cost recovery rider revenue due to 

recovery of the Crystal River 3 uprate regulatory asset in 2019 at Duke 
Energy Florida; and

• a $17 million decrease in weather-normal retail sale volumes driven 
by lower nonresidential customer demand due to impacts from the 
COVID-19 pandemic.

Partially offset by:

• a $214 million increase due to higher pricing from the Indiana retail rate 

case, net of rider revenues;

• a $92 million increase in retail pricing due to Duke Energy Florida’s 
base rate adjustments related to annual increases from the 2017 
Settlement Agreement and the Solar Base Rate Adjustment; and

• a $32 million increase due to higher pricing from South Carolina retail 

rate cases, net of a return of EDIT to customers.

Operating Expenses. The variance was driven primarily by:

• a $979 million increase in impairment charges primarily driven by the 

CCR Settlement Agreement filed with the NCUC in January 2021;

• a $117 million increase in depreciation and amortization expense 

primarily due to additional plant in service and new depreciation rates 
from the Indiana retail rate cases; and

• a $13 million increase in property and other taxes primarily due to prior 

year property tax reassessments.

Partially offset by:

• a $776 million decrease in fuel used in electric generation and 

purchased power primarily due to lower generation demand and lower 
fuel and natural gas costs; and

• a $106 million decrease in operation, maintenance and other expense 

primarily driven by cost mitigation efforts.

Interest Expense. The variance was primarily due to lower interest rates 

on outstanding debt.

Income Tax Expense. The ETRs for the years ended December 31, 2020, 

and 2019, were 11.3% and 18.2%, respectively. The decrease in the ETR was 
primarily due to an increase in the amortization of excess deferred taxes.

Gas Utilities and Infrastructure

(in millions)

Operating Revenues 
Operating Expenses 
Cost of natural gas
Operation, maintenance and other
Depreciation and amortization
Property and other taxes
Impairment charges

Total operating expenses

Operating Income 
Other Income and Expenses
Equity in (losses) earnings of unconsolidated affiliates
Other Income and Expenses, net

Total other income and expenses

Interest Expense 
(Loss) Income Before Income Taxes 
Income Tax (Benefit) Expense 
Segment (Loss) Income

Years Ended December 31,

2020

$

1,748 

2019

$ 1,866 

Variance

$ (118)

460 
430 
258 
112 
7 
1,267 
481 

(2,017)
56 
(1,961)
135 
(1,615)
(349)
$ (1,266)

627 
446 
256 
106 
— 
1,435 
431 

114 
26 
140 
117 
454 
22 
432 

$

(167)
(16)
2 
6 
7 
(168)
50 

(2,131)
30 
(2,101)
18 
(2,069)
(371)
$ (1,698)

Piedmont Local Distribution Company (LDC) throughput (Dth)
Duke Energy Midwest LDC throughput (MCF)

490,071,039 
84,160,162 

511,243,774 
89,025,972 

(21,172,735)
(4,865,810)

35

PART IIYear Ended December 31, 2020, as compared to 2019

Gas Utilities and Infrastructure’s results were impacted primarily by the 
cancellation of the ACP pipeline. The following is a detailed discussion of the 
variance drivers by line item.

Operating Revenues. The variance was driven primarily by:

•  a $167 million decrease due to lower natural gas costs passed through to 

customers, lower volumes, and decreased off-system sales natural gas costs; and

• a $47 million decrease due to return of EDIT to customers.

Partially offset by:

• an $87 million increase due to North Carolina base rate case increases.

Operating Expenses. The variance was driven primarily by:

• a $167 million decrease in cost of natural gas due to lower natural gas 

prices, lower volumes and decreased off-system sales natural gas costs.

Equity in (losses) earnings of unconsolidated affiliates. The variance 

was driven primarily by the cancellation of the ACP pipeline.

Other Income and Expenses, net. The variance was driven primarily by AFUDC 
equity and other income related to Belews Creek and Marshall Power Generation contracts.

Income Tax (Benefit) Expense. The increase in tax benefit was primarily 

due to a decrease in pretax income driven by the impact of the cancellation of 
the ACP pipeline. The ETRs for the years ended December 31, 2020, and 2019, 
were 21.6% and 4.8%, respectively. The increase in the ETR was primarily due 
to an adjustment, recorded in the first quarter of 2019, related to the income 
tax recognition for equity method investments. The equity method investment 
adjustment was immaterial and relates to prior years.

Commercial Renewables

(in millions)

Operating Revenues 
Operating Expenses 
Operation, maintenance and other
Depreciation and amortization
Property and other taxes
Impairment charges

Total operating expenses

Losses on Sales of Other Assets and Other, net 
Operating Loss
Other Income and Expenses, net
Interest Expense 
Loss Before Income Taxes 
Income Tax Benefit 
Add: Loss Attributable to Noncontrolling Interests 
Segment Income

Renewable plant production, GWh 
Net proportional MW capacity in operation(a)

Years Ended December 31,

2020

$

502 

2019

$

487 

Variance

$

15 

285 
199 
27 
6 
517 
(1)
(16)
7 
66 
(75)
(65)
296 
286 

10,204 
3,937 

$

297 
168 
23 
— 
488 
(3)
(4)
5 
95 
(94)
(115)
177 
198 

8,574 
3,485 

$

(12)
31 
4 
6 
29 
2 
(12)
2 
(29)
19 
50 
119 
88 

1,630 
452 

$

(a)  Certain projects are included in tax-equity structures where investors have differing interests in the project’s economic attributes. Amounts shown represent 100% of the tax-equity project’s capacity.

Year Ended December 31, 2020, as compared to 2019

Commercial Renewables’ results were favorable primarily due to growth 

Interest Expense. The decrease was primarily driven by non-qualifying 

of new project investments. Since December 31, 2019, Commercial Renewables 
has placed in service approximately 500 MW of capacity.

The following is a detailed discussion of the variance drivers by line item.

Operating Revenues. The variance was primarily driven by a $39 million 
increase associated with the growth of new projects placed in service, partially 
offset by a $24 million decrease primarily within the distributed energy 
portfolios for lower engineering and construction activities related to delays from 
COVID-19.

Operating Expenses. The variance was primarily driven by a $52 million 

increase in operating expenses due to the growth of new projects placed 
in service. This was partially offset by a $24 million decrease in operating 
expenses within the distributed energy portfolios for lower engineering and 
construction costs related to delays from COVID-19.

hedge activity in the prior year, higher capitalized interest in the current 
year for solar and wind projects in development and lower outstanding debt 
balances.

Income Tax Benefit. The decrease in the tax benefit was primarily driven 
by an increase in taxes associated with tax equity investments and a decrease 
in PTCs generated.

Loss Attributable to Noncontrolling Interests. The increase was 

driven primarily by the growth of new projects financed by tax equity.

36

PART IIOther

(in millions)

Operating Revenues 
Operating Expenses
Losses on Sales of Other Assets and Other, net 
Operating Income (Loss)
Other Income and Expenses, net
Interest Expense 
Loss Before Income Taxes 
Income Tax Benefit
Less: Net Income Attributable to Noncontrolling Interests 
Less: Preferred Dividends
Net Loss 

Years Ended December 31,

2020

97
12 
— 
85 
92 
657 
(480)
(162)
1 
107 
(426)

$

$

2019

95
117 
(2)
(24)
145 
705 
(584)
(173)
— 
41
(452)

$

$

Variance

$

$

2
(105)
2 
109 
(53)
(48)
104 
11 
1 
66 
26

Year Ended December 31, 2020, as compared to 2019 

The variance was primarily driven by a reversal of corporate allocated 

severance costs, obligations to the Duke Energy Foundation in 2019, and lower 
state income tax expense, partially offset by lower returns on investments, 
higher loss experience related to captive insurance claims, the declaration of 
preferred stock dividends, and lower earnings on the NMC investment. The 
following is a detailed discussion of the variance drivers by line item.

Operating Expenses. The decrease was primarily due to the deferral of 

2018 corporate allocated severance costs due to the Duke Energy Carolinas and 
Duke Energy Progress partial settlements in the 2019 North Carolina retail rate 
case and obligations to the Duke Energy Foundation in 2019, partially offset by 
higher loss experience related to captive insurance claims and higher franchise 
tax expense. 

Other Income and Expenses, net. The variance was primarily due to 
lower returns on investments that fund certain employee benefit obligations and 
lower earnings on the NMC investment primarily due to lower pricing.

Interest Expense. The variance was primarily due to lower outstanding 

short-term debt and lower interest rates.

Income Tax Benefit. The decrease in the tax benefit was primarily driven 

by a decrease in pretax losses, partially offset by an increase in state income 
tax benefits. The ETRs for the years ended December 31, 2020, and 2019, were 
33.8% and 29.6%, respectively. The increase in the ETR was primarily due to 
an increase in state income tax benefits in 2020, in relation to pretax losses.

Preferred Dividends. The variance was driven by the declaration of 

preferred stock dividends on preferred stock issued in late 2019.

SUBSIDIARY REGISTRANTS

Basis of Presentation

The results of operations and variance discussion for the Subsidiary Registrants is presented in a reduced disclosure format in accordance with General 

Instruction (I)(2)(a) of Form 10-K.

DUKE ENERGY CAROLINAS

Results of Operations

(in millions)

Operating Revenues 

Operating Expenses 

Fuel used in electric generation and purchased power

Operation, maintenance and other

Depreciation and amortization

Property and other taxes

Impairment charges

Total operating expenses 

Gains on Sales of Other Assets and Other, net 

Operating Income 

Other Income and Expenses, net

Interest Expense 

Income Before Income Taxes 

Income Tax Expense 

Net Income 

Years Ended December 31,

2020

$ 7,015 

2019

$ 7,395 

Variance

$ (380)

1,682 

1,743 

1,462 

299 

476 

5,662 

1 

1,354 

177 

487 

1,044 

88 

956 

$

1,804 

1,868 

1,388 

292 

17 

5,369 

— 

2,026 

151 

463 

1,714 

311 

(122)

(125)

74 

7 

459 

293 

1 

(672)

26 

24 

(670)

(223)

$ 1,403 

$ (447)

37

PART IIThe following table shows the percent changes in GWh sales and average number of customers for Duke Energy Carolinas. The below percentages for retail 
customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private 
utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior year 

Residential sales 

General service sales 

Industrial sales 

Wholesale power sales

Joint dispatch sales

Total sales

Average number of customers 

2020

(3.1)%

(6.7)%

(8.0)%

(2.0)%

(46.0)%

(5.9)%

1.9 %

2019

(2.9)%

(0.1)%

(1.9)%

(13.6)%

4.7 %

(2.6)%

2.1 %

Year Ended December 31, 2020, as compared to 2019 

Operating Revenues. The variance was driven primarily by:

• a $151 million decrease in fuel revenues due to lower prices and retail 

sales volumes; 

• a $149 million decrease in retail sales due to unfavorable weather in 

the current year;

• a $73 million decrease in rider revenues primarily due to EE programs; 

and

• a $50 million decrease in wholesale revenue primarily driven by the 
CCR Settlement Agreement filed with the NCUC in January 2021.

Partially offset by:

• a $25 million increase due to higher pricing from the South Carolina 

retail rate case, net of a return of EDIT to customers; and

• a $22 million increase in weather-normal retail sales volumes.

• a $74 million increase in depreciation and amortization expense 

primarily due to additional plant in service and new depreciation rates 
associated with the South Carolina rate case.

Partially offset by:

• a $125 million decrease in operation, maintenance and other expense 
primarily driven by the deferral of 2018 severance costs due to the 
partial settlement agreement between Duke Energy Carolinas and 
the Public Staff of the NCUC related to the 2019 North Carolina retail 
rate case, and cost mitigation efforts, partially offset by higher storm 
restoration costs; and

• a $122 million decrease in fuel used in electric generation and 

purchased power primarily due to lower retail sales volumes, net of a 
prior period true up.

Other Income and Expenses, net. The variance was primarily due to 

higher AFUDC equity in the current year.

Interest Expense. The variance was primarily due to higher debt 

Operating Expenses. The variance was driven primarily by:

outstanding in the current year.

• a $459 million increase in impairment charges primarily driven by the 
CCR Settlement Agreement filed with the NCUC in January 2021; and

Income Tax Expense. The decrease in tax expense was primarily due 
to a decrease in pretax income and an increase in the amortization of excess 
deferred taxes.

PROGRESS ENERGY

Results of Operations

(in millions)

Operating Revenues 

Operating Expenses 

Fuel used in electric generation and purchased power

Operation, maintenance and other

Depreciation and amortization

Property and other taxes

Impairment charges

Total operating expenses

Gains on Sales of Other Assets and Other, net 

Operating Income 

Other Income and Expenses, net

Interest Expense 

Income Before Income Taxes

Income Tax Expense

Net Income 

Less: Net Income Attributable to Noncontrolling Interests 

Net Income Attributable to Parent 

Years Ended December 31,

2020

$ 10,627 

2019

$ 11,202 

Variance

$

(575)

3,479 

2,479 

1,818 

545 

495 

8,816 

9 

1,820 

129 

790 

1,159 

113 

1,046 

1 

4,024 

2,495 

1,845 

561 

(24)

8,901 

— 

2,301 

141 

862 

1,580 

253 

1,327 

— 

$

1,045 

$

1,327 

$

38

(545)
(16)
(27)
(16)

519 
(85)
9 
(481)
(12)
(72)
(421)
(140)
(281)
1 
(282)

PART IIYear Ended December 31, 2020, as compared to 2019 

Operating Expenses. The variance was driven primarily by:

Operating Revenues. The variance was driven primarily by:

• a $545 million decrease in fuel used in electric generation and 

• a $567 million decrease in fuel revenues driven by lower sales 

volumes as well as an accelerated refund of fuel costs in response to 
the COVID-19 pandemic at Duke Energy Florida and lower fuel prices, 
volumes and native load transfer sales in the current year at Duke 
Energy Progress;

• a $169 million decrease in wholesale revenue primarily driven by the 
Duke Energy Progress’ CCR Settlement Agreement filed with the NCUC 
in January 2021 and decreased volumes at Duke Energy Progress, 
partially offset by increased demand at Duke Energy Florida;

• a $55 million decrease in rider revenues primarily due to the Crystal 
River 3 uprate regulatory asset being fully recovered in 2019 at Duke 
Energy Florida;

• a $31 million decrease in retail sales, net of fuel revenues, due to 
unfavorable weather at Duke Energy Progress, partially offset by 
favorable weather in the current year at Duke Energy Florida; and

• a $17 million decrease in weather-normal retail sales volumes.

Partially offset by:

• a $147 million increase in storm revenues due to Hurricane Dorian 

collections at Duke Energy Florida;

• a $92 million increase in retail pricing due to base rate adjustments 
related to annual increases from the 2017 Settlement Agreement and 
the Solar Base Rate Adjustment at Duke Energy Florida; and

• a $16 million increase due to higher pricing from the South Carolina 
retail rate case, net of a return of EDIT to customers at Duke Energy 
Progress.

purchased power primarily due to lower demand and changes in 
generation mix at Duke Energy Progress and lower demand and fuel 
costs at Duke Energy Florida;

• a $27 million decrease in depreciation and amortization expense 

primarily driven by a decrease in coal ash amortization, partially offset 
by a higher depreciable base and impacts from North Carolina and the 
South Carolina rate cases at Duke Energy Progress;

• a $16 million decrease in operation, maintenance and other expense 
at Duke Energy Progress primarily driven by the deferral of 2018 
severance costs due to the partial settlement agreement between Duke 
Energy Progress and the Public Staff of the NCUC related to the 2019 
North Carolina retail rate case, reduced outage costs and other cost 
mitigation efforts, partially offset by storm cost amortizations at Duke 
Energy Florida; and

• a $16 million decrease in property and other taxes driven primarily 

by lower gross receipts taxes due to decreased fuel revenues at Duke 
Energy Florida.

Partially offset by:

• a $519 million increase in impairment charges primarily driven by the 
Duke Energy Progress’ CCR Settlement Agreement filed with the NCUC 
in January 2021, and the prior year’s impairment reduction related to 
Citrus County CC at Duke Energy Florida.

Interest Expense. The variance was driven primarily by lower interest 

rates on outstanding debt at Duke Energy Progress.

Income Tax Expense. The decrease in tax expense was primarily due 
to a decrease in pretax income and an increase in the amortization of excess 
deferred taxes at Duke Energy Progress, partially offset by an increase in pretax 
income and a decrease in the amortization of excess deferred taxes at Duke 
Energy Florida.

DUKE ENERGY PROGRESS

Results of Operations

(in millions)

Operating Revenues 

Operating Expenses 

Fuel used in electric generation and purchased power

Operation, maintenance and other

Depreciation and amortization

Property and other taxes

Impairment charges

Total operating expenses 

Gains on Sales of Other Assets and Other, net 

Operating Income 

Other Income and Expenses, net

Interest Expense 

Income Before Income Taxes 

Income Tax (Benefit) Expense 

Net Income 

Years Ended December 31,

2020

$ 5,422 

2019

$ 5,957 

Variance

$ (535)

1,743

1,332

1,116

167

499

4,857

8

573

75

269

379

(36)

2,012

1,446

1,143

176

12

4,789

—

1,168

100

306

962

157

(269)

(114)

(27)

(9)

487 

68 

8 

(595)

(25)

(37)

(583)

(193)

$

415 

$

805 

$ (390)

39

PART IIThe following table shows the percent changes in GWh sales and average number of customers for Duke Energy Progress. The below percentages for retail 
customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private 
utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior year 

Residential sales 

General service sales 

Industrial sales 

Wholesale power sales

Joint dispatch sales

Total sales 

Average number of customers 

2020

(3.2)%

(7.4)%

(3.9)%

(9.1)%

9.9 %

(4.6)%

1.8 %

2019

(4.0)%

(1.6)%

0.6 %

(1.5)%

(0.8)%

(1.4)%

1.3 %

Year Ended December 31, 2020, as compared to 2019 

Operating Revenues. The variance was driven primarily by:

• a $272 million decrease in fuel cost recovery driven by lower fuel 

prices and volumes as well as less native load transfer sales in the 
current year;

• a $180 million decrease in wholesale revenue primarily driven by the 
CCR Settlement Agreement filed with the NCUC in January 2021, and 
decreased volumes, partially offset by increased capacity rates;

• a $77 million decrease in retail sales due to unfavorable weather; and

• a $10 million decrease in weather-normal retail sales volumes.

Partially offset by:

Partially Offset by:

• a $269 million decrease in fuel used in electric generation and 

purchased power primarily due to lower demand and changes in 
generation mix;

• a $114 million decrease in operation, maintenance and other expense 
primarily driven by the deferral of 2018 severance costs due to the 
partial settlement agreement between Duke Energy Progress and the 
Public Staff of the NCUC related to the 2019 North Carolina retail rate 
case, reduced outage costs and other costs mitigation efforts; and

• a $27 million decrease in depreciation and amortization expense primarily 
driven by a decrease in coal ash amortization, partially offset by a higher 
depreciable base and impacts from the South Carolina rate cases.

Other Income and Expenses, net. The variance was primarily due to 

• a $16 million increase due to higher pricing from the South Carolina 

lower AFUDC equity in the current year.

retail rate case, net of a return of EDIT to customers.

Interest Expense. The variance was driven primarily by lower interest 

Operating Expenses. The variance was driven primarily by:

rates on outstanding debt.

• a $487 million increase in impairment charges primarily driven by the 

CCR Settlement Agreement filed with the NCUC in January 2021.

Income Tax (Benefit) Expense. The decrease in tax expense was 
primarily due to a decrease in pretax income and an increase in the amortization 
of excess deferred taxes.

DUKE ENERGY FLORIDA

Results of Operations

(in millions)

Operating Revenues 

Operating Expenses

Fuel used in electric generation and purchased power 

Operation, maintenance and other 

Depreciation and amortization 

Property and other taxes 

Impairment charges 

Total operating expenses 

Gains on Sales of Other Assets and Other, net 

Operating Income 

Other Income and Expenses, net

Interest Expense 

Income Before Income Taxes 

Income Tax Expense 

Net Income 

Years Ended December 31,

2020

$ 5,188 

2019

$ 5,231 

Variance

$

(43)

1,737 

1,131 

702 

381 

(4)

3,947 

1 

1,242 

53 

326 

969 

198 

771 

$

2,012 

1,034 

702 

392 

(36)

4,104 

— 

1,127 

48 

328 

847 

155 

692 

$

(275)

97 

— 

(11)

32 

(157)

1 

115 

5 

(2)

122 

43 

79 

$

40

PART IIThe following table shows the percent changes in GWh sales and average number of customers for Duke Energy Florida. The below percentages for retail 
customer classes represent billed sales only. Wholesale power sales include both billed and unbilled sales. Total sales includes billed and unbilled retail sales and 
wholesale sales to incorporated municipalities, public and private utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior year 

Residential sales 

General service sales 

Industrial sales 

Wholesale power sales

Total sales 

Average number of customers 

2020

3.3 %

(5.3)%

6.2 %

(1.7)%

0.8 %

1.8 %

2019

0.7 %

0.3 %

(4.6)%

28.8 %

1.5 %

1.6 %

Year Ended December 31, 2020, as compared to 2019 

Operating Revenues. The variance was driven primarily by:

• a $295 million decrease in fuel revenues driven by lower sales volumes 
as well as an accelerated refund of fuel costs to customers in response 
to the COVID-19 pandemic;

offset by lower late payment and service charge revenues due to a 
moratorium during the COVID-19 pandemic; and

• an $11 million increase in wholesale power revenues, net of fuel, 

primarily due to increased capacity charges.

Operating Expenses. The variance was driven primarily by:

• a $55 million decrease in rider revenues primarily due to full recovery of 

the Crystal River 3 uprate regulatory asset in 2019; and

• a $275 million decrease in fuel used in electric generation and 

purchased power primarily due to lower fuel costs; and

• a $7 million decrease in weather-normal retail sales volumes.

Partially offset by:

• a $147 million increase in storm revenues due to recovery of Hurricane 

Dorian costs;

• a $92 million increase in retail pricing due to base rate adjustments 
related to annual increases from the 2017 Settlement Agreement and 
the Solar Base Rate Adjustment;

• a $46 million increase in retail sales, net of fuel revenues, due to 

favorable weather in the current year;

• an $18 million increase in other revenues primarily due to increased 
transmission revenues and lighting equipment rentals, partially 

• an $11 million decrease in property and other taxes driven by lower 

gross receipts taxes due to decreased fuel revenues.

Partially offset by:

• a $97 million increase in operation, maintenance and other expense 

primarily due to storm cost amortizations; and 

• a $32 million increase in impairment charges primarily due to the prior 

year’s impairment reduction related to Citrus County CC.

Income Tax Expense. The increase in tax expense was primarily due 
to an increase in pretax income and a decrease in the amortization of excess 
deferred taxes.

DUKE ENERGY OHIO

Results of Operations

(in millions) 
Operating Revenues 
Regulated electric
Regulated natural gas

Total operating revenues

Operating Expenses
Fuel used in electric generation and purchased power – regulated 
Cost of natural gas 
Operation, maintenance and other 
Depreciation and amortization 
Property and other taxes 

Total operating expenses 

Operating Income 
Other Income and Expenses, net
Interest Expense 
Income from Continuing Operations Before Income Taxes 
Income Tax Expense from Continuing Operations
Income from Continuing Operations
Loss from Discontinued Operations, net of tax
Net Income

Years Ended December 31,

2020

2019

Variance

$ 1,405 
453 
1,858 

339 
73 
463 
278 
324 
1,477 
381 
16 
102 
295 
43 
252 
— 
252 

$

$ 1,456 
484 
1,940 

388 
95 
520 
265 
308 
1,576 
364 
24 
109 
279 
40 
239 
(1)
238 

$

$

$

(51)
(31)
(82)

(49)
(22)
(57)
13 
16 
(99)
17 
(8)
(7)
16 
3 
13 
1 
14 

41

PART IIThe following table shows the percent changes in GWh sales of electricity, MCF of natural gas delivered and average number of electric and natural gas 
customers for Duke Energy Ohio. The below percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and 
wholesale sales to incorporated municipalities, public and private utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior year 
Residential sales 
General service sales 
Industrial sales 
Wholesale electric power sales 
Other natural gas sales
Total sales 
Average number of customers 

Year Ended December 31, 2020, as compared to 2019 

Operating Revenues. The variance was driven primarily by:

• a $61 million decrease in fuel related revenues primarily due to lower 

prices and decreased volumes;

• a $22 million decrease in retail revenue riders, primarily due to lower EE 
program revenues, volume impacts of the Distribution Decoupling rider, 
suspension of the MGP rider and higher taxes returned to customers 
via the Tax Cuts and Job Acts rider, partially offset by an increase in the 
Distribution Capital Investment rider due to increased capital investment;

• a $15 million decrease in revenues due to unfavorable weather in the 

current year;

•  an $11 million decrease in other revenues due to lower OVEC sales into PJM; 

• a $5 million decrease in bulk power marketing sales, and

• a $4 million decrease in weather-normal sales volumes.

Partially offset by:

• a $23 million increase in retail pricing primarily due to rate case 

impacts in Kentucky; and

2020
(1.9)%
(7.7)%
(6.6)%
(21.3)%
n/a
(5.0)%
1.3 %

Electric

Natural Gas

2019
(3.9)%
(1.9)%
(2.1)%
(4.9)%
n/a
(2.4)%
0.7 %

2020
(5.7)%
(8.4)%
(4.1)%
n/a
(2.2)%
(5.5)%
1.1 %

2019
(3.7)%
(1.2)%
(0.4)%
n/a
0.7 %
(1.7)%
0.7 %

• an $18 million increase in PJM transmission revenues as a result of 

increased capital spend.

Operating Expenses. The variance was driven primarily by:

• a $71 million decrease in fuel expense, primarily driven by lower fuel 

prices, decreased volumes and lower OVEC costs; and

• a $57 million decrease in operations, maintenance and other expense 
primarily due to a new customer program and other deferrals, the 
timing of EE programs and outage costs, lower employee benefit 
expenses and lower vegetation and pole maintenance costs. 

Partially offset by:

• a $16 million increase in property and other taxes primarily due to 

higher property taxes due to increased plant in service, partially offset 
by lower franchise and other taxes; and

• a $13 million increase in depreciation and amortization primarily driven 
by an increase in distribution plant, partially offset by lower amortization 
due to the suspension of the MGP rider in Ohio and environmental 
surcharge mechanism amortization of deferred coal ash pond ARO.

DUKE ENERGY INDIANA

Results of Operations

(in millions) 

Operating Revenues 

Operating Expenses

Fuel used in electric generation and purchased power

Operation, maintenance and other

Depreciation and amortization

Property and other taxes

Total operating expenses 

Operating Income

Other Income and Expenses, net

Interest Expense 

Income Before Income Taxes 

Income Tax Expense 

Net Income 

Years Ended December 31,

2020

$ 2,795 

2019

$ 3,004 

Variance

$ (209)

767 

762 

569 

81 

2,179 

616 

37 

161 

492 

84 

$

408 

$

935 

790 

525 

69 

2,319 

685 

41 

156 

570 

134 

436 

(168)

(28)

44 

12 

(140)

(69)

(4)

5 

(78)

(50)

(28)

$

42

PART IIThe following table shows the percent changes in GWh sales and average number of customers for Duke Energy Indiana. The below percentages for retail 
customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities, public and private 
utilities and power marketers. Amounts are not weather-normalized.

Increase (Decrease) over prior year 

Residential sales 

General service sales 

Industrial sales 

Wholesale power sales 

Total sales 

Average number of customers 

2020

(2.7)%

(7.0)%

(7.6)%

3.8 %

(4.3)%

1.4 %

2019

(3.9)%

(2.2)%

(2.6)%

(27.7)%

(6.8)%

1.2 %

Year Ended December 31, 2020, as compared to 2019 

Operating Revenues. The variance was driven primarily by:

• a $193 million decrease in rider revenues primarily due to lower sales 

volumes and credit adjustment rider refunds;

• a $179 million decrease in fuel revenues primarily due to lower fuel 

cost recovery driven by customer demand and fuel prices;

• a $20 million decrease in weather-normal retail sales volumes driven 

by lower nonresidential customer demand;

• a $16 million decrease in retail sales due to unfavorable weather in the 

current year; and

• a $10 million decrease in wholesale revenues primarily related to the 
true up of wholesale transmission revenues and lower rates in the 
current year.

Operating Expenses. The variance was driven primarily by:

• a $168 million decrease in fuel used in electric generation and 

purchased power expense primarily due to lower purchased power 
expense, lower amortization of deferred fuel costs and lower coal and 
natural gas costs; and

• a $28 million decrease in operation, maintenance and other primarily 
due to lower storm restoration costs, training costs, employee related 
costs and a new customer program deferral.

Partially offset by:

• a $44 million increase in depreciation and amortization primarily due 
to a change in depreciation rates from the Indiana retail rate case and 
additional plant in service; and

• a $12 million increase in property and other taxes primarily due to 

additional plant in service and property tax true ups for prior periods.

Partially offset by:

• a $214 million increase primarily due to higher pricing from the Indiana 

retail rate case, net of certain rider revenues.

Income Tax Expense. The decrease in income tax expense was primarily 
due to an increase in the amortization of excess deferred taxes and a decrease 
in pretax income.

PIEDMONT

Results of Operations

(in millions)

Operating Revenues

Operating Expenses

Cost of natural gas

Operation, maintenance and other

Depreciation and amortization

Property and other taxes

Impairment charges

Total operating expenses

Operating Income

Equity in earnings of unconsolidated affiliates

Other income and expenses, net

Total other income and expenses

Interest Expense

Income Before Income Taxes

Income Tax Expense

Net Income

Years Ended December 31,

2020

$ 1,297 

2019

$ 1,381 

Variance

$

(84)

386 

322 

180 

53 

7 

948 

349 

9 

51 

60 

118 

291 

18 

273 

$

532 

328 

172 

45 

— 

1,077 

304 

8 

20 

28 

87 

245 

43 

202 

$

(146)

(6)

8 

8 

7 

(129)

45 

1 

31 

32 

31 

46 

(25)

71 

$

43

PART IIThe following table shows the percent changes in Dth delivered and average number of customers. The percentages for all throughput deliveries represent billed 

and unbilled sales. Amounts are not weather-normalized.

Increase (Decrease) over prior year

Residential deliveries

Commercial deliveries

Industrial deliveries

Power generation deliveries

For resale

Total throughput deliveries

Secondary market volumes

Average number of customers

2020

(3.5)%

(9.1)%

(2.9)%

(3.7)%

(9.7)%

(4.1)%

(9.1)%

2.3 %

2019

(8.0)%

(4.6)%

1.7 %

(11.8)%

4.8 %

(8.2)%

(0.5)%

1.4 %

The margin decoupling mechanism adjusts for variations in residential 

and commercial use per customer, including those due to weather and 
conservation. The weather normalization adjustment mechanisms mostly offset 
the impact of weather on bills rendered, but do not ensure full recovery of 
approved margin during periods when winter weather is significantly warmer or 
colder than normal.

Year Ended December 31, 2020, as compared to 2019 

Operating Revenues. The variance was driven primarily by:

• a $146 million decrease due to lower natural gas costs passed through 
to customers, lower volumes, and decreased off-system sales natural 
gas costs;

• a $47 million decrease due to return of EDIT to customers; and

• a $7 million decrease due to NCUC approval related to tax reform 

accounting from fixed-rate contracts in the prior year.

Partially offset by:

• an $87 million increase due to North Carolina base rate case increases;

Income Tax Expense. The decrease in income tax expense was primarily 
due to an increase in the amortization of excess deferred taxes and an increase 
in AFUDC Equity, partially offset by an increase in pretax income.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Preparation of financial statements requires the application of accounting 
policies, judgments, assumptions and estimates that can significantly affect the 
reported results of operations, cash flows or the amounts of assets and liabilities 
recognized in the financial statements. Judgments made include the likelihood of 
success of particular projects, possible legal and regulatory challenges, earnings 
assumptions on pension and other benefit fund investments and anticipated 
recovery of costs, especially through regulated operations. 

Management discusses these policies, estimates and assumptions with 

senior members of management on a regular basis and provides periodic 
updates on management decisions to the Audit Committee. Management 
believes the areas described below require significant judgment in the 
application of accounting policy or in making estimates and assumptions that 
are inherently uncertain and that may change in subsequent periods.

For further information, see Note 1 to the Consolidated Financial 

Statements, “Summary of Significant Accounting Policies.”

• a $20 million increase due to North Carolina IMR increases; and

Regulated Operations Accounting

• an $18 million increase due to addition of Belews Creek and Marshall 

Power Generation capacity contracts.

Operating Expenses. The variance was driven primarily by:

• a $146 million decrease in cost of natural gas due to lower natural gas 

prices, lower volumes, and decreased off-system sales natural gas costs.

Partially offset by:

• an $8 million increase in depreciation and amortization due to 

additional plant in service and higher depreciation rates, partially 
offset by Belews Creek and Marshall Power Generation contracts and 
amortization of EDIT interest expense; and

• an $8 million increase in property and other taxes due to prior year 

property tax true ups.

Other Income and Expenses, net. The variance was driven primarily 

by AFUDC equity and other income related to Belews Creek and Marshall Power 
Generation contracts.

Interest Expense. The variance was driven primarily by interest on 

tax reform related deferrals being returned to customers and higher debt 
outstanding in the current year.

Substantially all of Duke Energy’s regulated operations meet the criteria 
for application of regulated operations accounting treatment. As a result, Duke 
Energy is required to record assets and liabilities that would not be recorded 
for nonregulated entities. Regulatory assets generally represent incurred costs 
that have been deferred because such costs are probable of future recovery in 
customer rates. Regulatory liabilities are recorded when it is probable that a 
regulator will require Duke Energy to make refunds to customers or reduce rates 
to customers for previous collections or deferred revenue for costs that have yet 
to be incurred. 

Management continually assesses whether recorded regulatory assets are 

probable of future recovery by considering factors such as:

• applicable regulatory environment changes;

• historical regulatory treatment for similar costs in Duke Energy’s 

jurisdictions;

• litigation of rate orders;

• recent rate orders to other regulated entities;

• levels of actual return on equity compared to approved rates of return 

on equity; and

• the status of any pending or potential deregulation legislation. 

44

PART IIIf future recovery of costs ceases to be probable, asset write-offs would 

Asset Retirement Obligations

be recognized in operating income. Additionally, regulatory agencies can provide 
flexibility in the manner and timing of the depreciation of property, plant and 
equipment, recognition of asset retirement costs and amortization of regulatory 
assets, or may disallow recovery of all or a portion of certain assets.

As required by regulated operations accounting rules, significant judgment 
can be required to determine if an otherwise recognizable incurred cost qualifies 
to be deferred for future recovery as a regulatory asset. Significant judgment can 
also be required to determine if revenues previously recognized are for entity 
specific costs that are no longer expected to be incurred or have not yet been 
incurred and are therefore a regulatory liability.

Goodwill Impairment Assessments

Duke Energy performed its annual goodwill impairment tests for all 
reporting units as of August 31, 2020. Additionally, Duke Energy monitors all 
relevant events and circumstances during the year to determine if an interim 
impairment test is required. Such events and circumstances include an 
adverse regulatory outcome, declining financial performance and deterioration 
of industry or market conditions. As of August 31, 2020, all of the reporting 
units’ estimated fair value of equity substantially exceeded the carrying value of 
equity. The fair values of the reporting units were calculated using a weighted 
combination of the income approach, which estimates fair value based on 
discounted cash flows, and the market approach, which estimates fair value 
based on market comparables within the utility and energy industries.

Estimated future cash flows under the income approach are based on 
Duke Energy’s internal business plan. Significant assumptions used are growth 
rates, future rates of return expected to result from ongoing rate regulation and 
discount rates. Management determines the appropriate discount rate for each 
of its reporting units based on the WACC for each individual reporting unit. The 
WACC takes into account both the after-tax cost of debt and cost of equity. A 
major component of the cost of equity is the current risk-free rate on 20-year 
U.S. Treasury bonds. In the 2020 impairment tests, Duke Energy considered 
implied WACCs for certain peer companies in determining the appropriate WACC 
rates to use in its analysis. As each reporting unit has a different risk profile 
based on the nature of its operations, including factors such as regulation, the 
WACC for each reporting unit may differ. Accordingly, the WACCs were adjusted, 
as appropriate, to account for company specific risk premiums. The discount 
rates used for calculating the fair values as of August 31, 2020, for each of 
Duke Energy’s reporting units ranged from 5.2% to 5.7%. The underlying 
assumptions and estimates are made as of a point in time. Subsequent 
changes, particularly changes in the discount rates, authorized regulated rates 
of return or growth rates inherent in management’s estimates of future cash 
flows, could result in future impairment charges.

One of the most significant assumptions utilized in determining the fair 

value of reporting units under the market approach is implied market multiples 
for certain peer companies. Management selects comparable peers based 
on each peer’s primary business mix, operations, and market capitalization 
compared to the applicable reporting unit and calculates implied market 
multiples based on available projected earnings guidance and peer company 
market values as of August 31.

Duke Energy primarily operates in environments that are rate-regulated. 

In such environments, revenue requirements are adjusted periodically by 
regulators based on factors including levels of costs, sales volumes and costs 
of capital. Accordingly, Duke Energy’s regulated utilities operate to some degree 
with a buffer from the direct effects, positive or negative, of significant swings in 
market or economic conditions. However, significant changes in discount rates 
over a prolonged period may have a material impact on the fair value of equity.
For further information, see Note 11 to the Consolidated Financial 

Statements, “Goodwill and Intangible Assets.”

AROs are recognized for legal obligations associated with the retirement of 
property, plant and equipment at the present value of the projected liability in the 
period in which it is incurred, if a reasonable estimate of fair value can be made.
The present value of the initial obligation and subsequent updates are 
based on discounted cash flows, which include estimates regarding timing of 
future cash flows, selection of discount rates and cost escalation rates, among 
other factors. These estimates are subject to change. 

Obligations for nuclear decommissioning are based on site-specific cost 

studies. Duke Energy Carolinas and Duke Energy Progress assume prompt 
dismantlement of the nuclear facilities after operations are ceased. During 2020, 
Duke Energy Florida, closed an agreement for the accelerated decommissioning 
of the Crystal River Unit 3 nuclear power station after receiving approval from 
the NRC and FPSC. The retirement obligations for the decommissioning of 
Crystal River Unit 3 nuclear power station are measured based on accelerated 
decommissioning from 2020 continuing through 2027. Duke Energy Carolinas, 
Duke Energy Progress and Duke Energy Florida also assume that spent fuel will 
be stored on-site until such time that it can be transferred to a yet to be built DOE 
facility.

Obligations for closure of ash basins are based upon discounted cash 

flows of estimated costs for site-specific plans. During 2020, the Hoosier 
Environmental Council filed a Petition for Administrative Review with the Indiana 
Office of Environmental Adjudication challenging the Indiana Department of 
Environmental Management’s partial approval of Duke Energy Indiana’s ash pond 
closure plan. Due to these challenges, in 2020, Duke Energy Indiana remeasured 
and increased the closure estimates for certain coal ash impoundments. 

For further information, see Notes 3, 4 and 9 to the Consolidated Financial 
Statements, “Regulatory Matters,” “Commitments and Contingencies” and “Asset 
Retirement Obligations.”

Long-Lived Asset Impairment Assessments, Excluding Regulated 

Operations, and Equity Method Investments 

Duke Energy evaluates property, plant and equipment for impairment 
when events or changes in circumstances (such as a significant change in 
cash flow projections or the determination that it is more likely than not that an 
asset or asset group will be sold) indicate the carrying value of such assets may 
not be recoverable. The determination of whether an impairment has occurred 
is based on an estimate of undiscounted future cash flows attributable to the 
assets, as compared with their carrying value.

Performing an impairment evaluation involves a significant degree of 

estimation and judgment in areas such as identifying circumstances that 
indicate an impairment may exist, identifying and grouping affected assets and 
developing the undiscounted future cash flows. If an impairment has occurred, 
the amount of the impairment recognized is determined by estimating the fair 
value and recording a loss if the carrying value is greater than the fair value. 
Additionally, determining fair value requires probability weighting future cash 
flows to reflect expectations about possible variations in their amounts or timing 
and the selection of an appropriate discount rate. Although cash flow estimates 
are based on relevant information available at the time the estimates are made, 
estimates of future cash flows are, by nature, highly uncertain and may vary 
significantly from actual results. 

When determining whether an asset or asset group has been impaired, 
management groups assets at the lowest level that has discrete cash flows. 
Investments in affiliates that are not controlled by Duke Energy, but over which 
it has significant influence, are accounted for using the equity method. Equity 
method investments are assessed for impairment when conditions exist that 
indicate that the fair value of the investment is less than book value. It the decline 
in value is considered to be other than temporary, the investment is written down 
to its estimated fair value, which establishes a new cost basis in the investment.

45

PART IIDuring 2020, Duke Energy evaluated recoverability of certain renewable 

merchant plants due to declining market pricing and declining long-term 
forecasted energy prices, primarily driven by lower forecasted natural gas 
prices, capital cost of new renewables and increase renewable penetration. It 
was determined the assets were all recoverable as the carrying value of the 
assets approximated or exceeded the aggregate estimated future cash flows.

For further information, see Notes 2, 10 and 12 to the Consolidated 
Financial Statements, “Business Segments,” “Property, Plant and Equipment” 
and “Investments in Unconsolidated Affiliates.”

Pension and Other Post-Retirement Benefits

The calculation of pension expense, other post-retirement benefit expense 

and net pension and other post-retirement assets or liabilities require the use 
of assumptions and election of permissible accounting alternatives. Changes 
in assumptions can result in different expense and reported asset or liability 
amounts and future actual experience can differ from the assumptions. Duke 
Energy believes the most critical assumptions for pension and other post-
retirement benefits are the expected long-term rate of return on plan assets and 
the assumed discount rate applied to future projected benefit payments.

Duke Energy elects to amortize net actuarial gain or loss amounts that are 

in excess of 10% of the greater of the market-related value of plan assets or 
the plan’s projected benefit obligation, into net pension or other post-retirement 
benefit expense over the average remaining service period of active participants 
expected to benefit under the plan. If all or almost all of a plan’s participants 
are inactive, the average remaining life expectancy of the inactive participants 
is used instead of average remaining service period. Prior service cost or credit, 
which represents an increase or decrease in a plan’s pension benefit obligation 
resulting from plan amendment, is amortized on a straight-line basis over the 
average expected remaining service period of active participants expected to 
benefit under the plan. If all or almost all of a plan’s participants are inactive, the 
average remaining life expectancy of the inactive participants is used instead of 
average remaining service period.

As of December 31, 2020, Duke Energy assumes pension and other 
post-retirement plan assets will generate a long-term rate of return of 6.50%. 
The expected long-term rate of return was developed using a weighted average 
calculation of expected returns based primarily on future expected returns across 
asset classes considering the use of active asset managers, where applicable. 
The asset allocation targets were set after considering the investment objective 
and the risk profile. Equity securities are held for their higher expected returns. 
Debt securities are primarily held to hedge the qualified pension liability. Real 
assets, return-seeking fixed income, hedge funds and other global securities 
are held for diversification. Investments within asset classes are diversified to 
achieve broad market participation and reduce the impact of individual managers 
on investments. 

Duke Energy discounted its future U.S. pension and other post-retirement 

obligations using a rate of 2.60% as of December 31, 2020. Discount rates 
used to measure benefit plan obligations for financial reporting purposes reflect 
rates at which pension benefits could be effectively settled. As of December 31, 
2020, Duke Energy determined its discount rate for U.S. pension and other 
post-retirement obligations using a bond selection-settlement portfolio approach. 
This approach develops a discount rate by selecting a portfolio of high-quality 
corporate bonds that generate sufficient cash flow to provide for projected benefit 
payments of the plan. The selected bond portfolio is derived from a universe of 
non-callable corporate bonds rated Aa quality or higher. After the bond portfolio 
is selected, a single interest rate is determined that equates the present value 
of the plan’s projected benefit payments discounted at this rate with the market 
value of the bonds selected.

Future changes in plan asset returns, assumed discount rates and 
various other factors related to the participants in Duke Energy’s pension and 
post-retirement plans will impact future pension expense and liabilities. Duke 
Energy cannot predict with certainty what these factors will be in the future. The 
following table presents the approximate effect on Duke Energy’s 2020 pretax 
pension expense, pretax other post-retirement expense, pension obligation and 
other post-retirement benefit obligation if a 0.25% change in rates were to occur.

(in millions)

Effect on 2020 pretax pension and other post-retirement expense:

Expected long-term rate of return

Discount rate

Effect on pension and other post-retirement benefit obligation at December 31, 2020:

Discount rate

Qualified and Non-
Qualified Pension Plans

Other Post-Retirement Plans

0.25%

(0.25)%

0.25%

(0.25)%

$ (21)

(9)

$ 21

9

(208)

213

$ (1)

—

(13)

$

1

(1)

14

Duke Energy’s other post-retirement plan uses a health care cost trend rate covering both pre- and post-age 65 retired plan participants, which is comprised 

of a medical care cost trend rate, which reflects the near- and long-term expectation of increases in medical costs, and a prescription drug cost trend rate, which 
reflects the near- and long-term expectation of increases in prescription drug costs. As of December 31, 2020, the health care cost trend rate was 6.25%, trending 
down to 4.75% by 2028. These plans are closed to new employees. 

For further information, see Note 22 to the Consolidated Financial Statements, “Employee Benefit Plans.”

LIQUIDITY AND CAPITAL RESOURCES

Sources and Uses of Cash

Duke Energy relies primarily upon cash flows from operations, debt and 

equity issuances and its existing cash and cash equivalents to fund its liquidity 
and capital requirements. Duke Energy’s capital requirements arise primarily 
from capital and investment expenditures, repaying long-term debt and paying 
dividends to shareholders.

Among other provisions, the Tax Act lowered the corporate federal income 

tax rate from 35% to 21% and eliminated bonus depreciation for regulated 
utilities. For Duke Energy’s regulated operations, the reduction in federal 
income taxes will result in lower regulated customer rates. However, due to 
its existing NOL position and other tax credits, Duke Energy does not expect to 

be a significant federal cash taxpayer through at least 2029. As a result, any 
reduction in customer rates could cause a material reduction in consolidated 
cash flows from operations in the short term. Over time, the reduction in 
deferred tax liabilities resulting from the Tax Act will increase Duke Energy’s 
regulated rate base investments and customer rates. Impacts of the Tax Act 
to Duke Energy’s cash flows and credit metrics are subject to the regulatory 
actions of its state commissions and the FERC. See Note 3 to the Consolidated 
Financial Statements, “Regulatory Matters,” for additional information.

The Subsidiary Registrants generally maintain minimal cash balances and 

use short-term borrowings to meet their working capital needs and other cash 

46

PART IIrequirements. The Subsidiary Registrants, excluding Progress Energy, support 
their short-term borrowing needs through participation with Duke Energy and 
certain of its other subsidiaries in a money pool arrangement. The companies with 
short-term funds may provide short-term loans to affiliates participating under 
this arrangement. See Note 6 to the Consolidated Financial Statements, “Debt and 
Credit Facilities,” for additional discussion of the money pool arrangement.

Duke Energy and the Subsidiary Registrants, excluding Progress Energy, 

may also use short-term debt, including commercial paper and the money 
pool, as a bridge to long-term debt financings. The levels of borrowing may 
vary significantly over the course of the year due to the timing of long-term 
debt financings and the impact of fluctuations in cash flows from operations. 
From time to time, Duke Energy’s current liabilities exceed current assets 
resulting from the use of short-term debt as a funding source to meet scheduled 
maturities of long-term debt, as well as cash needs, which can fluctuate due to 
the seasonality of its businesses.

During March 2020, in response to market volatility and the ongoing 
economic uncertainty related to COVID-19, Duke Energy took several actions to 
enhance the company’s liquidity position including:

• Duke Energy drew down the remaining $500 million of availability 

under the existing $1 billion Three-Year Revolving Credit Facility. That 
additional borrowing was subsequently repaid during the second 
quarter of 2020; and

• Duke Energy entered into and borrowed the full amount under a 

$1.5 billion, 364-day Term Loan Credit Agreement. The Term Loan 
Credit Agreement contained a provision for additional borrowing 
capacity of $500 million. Duke Energy exercised the provision 
and borrowed an additional $188 million, for a total borrowing of 
approximately $1.7 billion. By November 2020, Duke Energy repaid the 
entire borrowing under the 364-day Term Loan.

Following March 2020, access to credit and equity markets has 

normalized. In addition to the March 2020 financings to address the company’s 
liquidity position, for the year ended December 31, 2020, Duke Energy issued 
approximately $5.6 billion in debt and raised approximately $2.9 billion of 
common equity through equity forward agreements and the company’s dividend 
reinvestment and ATM programs. A portion of the proceeds from the equity 
forward settlements will be used to fully repay Duke Energy’s portion of the ACP 
construction loan of approximately $860 million. Despite the recovery in capital 
markets, Duke Energy continues to monitor access to credit and equity markets 
amid the ongoing economic uncertainty related to COVID-19.

In addition to actions taken by the company, the CARES Act, enacted 
in March 2020, as an emergency economic stimulus package in response to 
the COVID-19 pandemic, included provisions providing relief to entities with 
remaining AMT credit refund allowances. Through the CARES Act, Duke Energy 
accelerated remaining AMT credit refund allowances and claimed a refund 
in full for any AMT credit carryforwards. As a result, in the third quarter of 
2020, Duke Energy received $572 million related to AMT credit carryforwards 
and $19 million of interest income. See Note 23 to the Consolidated Financial 
Statements, “Income Taxes,” for additional information.

As of December 31, 2020, Duke Energy had approximately $259 million 

of cash on hand, $5.6 billion available under its $8 billion Master Credit Facility 
and $500 million available under the $1 billion Three-Year Revolving Credit 
Facility. Duke Energy expects to have sufficient liquidity in the form of cash on 
hand, cash from operations and available credit capacity to support its funding 
needs. Refer to Notes 6 and 19 to the Consolidated Financial Statements, “Debt 
and Credit Facilities” and “Stockholders’ Equity,” respectively, for information 
regarding Duke Energy’s debt and equity issuances, debt maturities and 
available credit facilities including the Master Credit Facility.

Credit Facilities and Registration Statements

See Note 6 to the Consolidated Financial Statements, “Debt and Credit 
Facilities,” for further information regarding credit facilities and shelf registration 
statements available to Duke Energy and the Duke Energy Registrants. 

47

CAPITAL EXPENDITURES

Duke Energy continues to focus on reducing risk and positioning its 
business for future success and will invest principally in its strongest business 
sectors. Duke Energy’s projected capital and investment expenditures, including 
AFUDC debt and capitalized interest, for the next three fiscal years are included 
in the table below.

(in millions) 

New generation 

Regulated renewables

Environmental

Nuclear fuel

Major nuclear

Customer additions
Grid modernization and other transmission and 

distribution projects

Maintenance and other

Total Electric Utilities and Infrastructure

Gas Utilities and Infrastructure

2021

2022

2023

$

60 

$

20 

$

85 

755 

600 

380 

205 

560 

710 

820 

400 

270 

555 

5,025 

2,650 

4,840 

2,750 

10,450 

10,175 

1,275 

1,150 

665 

795 

425 

280 

565 

3,460 

2,200 

8,450 

1,250 

Commercial Renewables and Other 
Total projected capital and investment expenditures 

775 
$ 10,475 

1,075 
$ 12,800 

750 
$12,075 

DEBT MATURITIES

See Note 6 to the Consolidated Financial Statements, “Debt and Credit 
Facilities,” for further information regarding significant components of Current 
Maturities of Long-Term Debt on the Consolidated Balance Sheets. 

DIVIDEND PAYMENTS

In 2020, Duke Energy paid quarterly cash dividends for the 94th 
consecutive year and expects to continue its policy of paying regular cash 
dividends in the future. There is no assurance as to the amount of future 
dividends because they depend on future earnings, capital requirements, 
financial condition and are subject to the discretion of the Board of Directors.
Duke Energy targets a dividend payout ratio of between 65% and 75%, 
based upon adjusted EPS, and expects this trend to continue through 2025. Duke 
Energy increased the dividend by approximately 2% annually in both 2020 and 
2019, and the company remains committed to continued growth of the dividend.

Dividend and Other Funding Restrictions of Duke Energy Subsidiaries

As discussed in Note 3 to the Consolidated Financial Statements, 

“Regulatory Matters,” Duke Energy’s wholly owned public utility operating 
companies have restrictions on the amount of funds that can be transferred 
to Duke Energy through dividends, advances or loans as a result of conditions 
imposed by various regulators in conjunction with merger transactions. Duke 
Energy Progress and Duke Energy Florida also have restrictions imposed by 
their first mortgage bond indentures and Articles of Incorporation, which in 
certain circumstances, limit their ability to make cash dividends or distributions 
on common stock. Additionally, certain other Duke Energy subsidiaries have 
other restrictions, such as minimum working capital and tangible net worth 
requirements pursuant to debt and other agreements that limit the amount 
of funds that can be transferred to Duke Energy. At December 31, 2020, the 
amount of restricted net assets of wholly owned subsidiaries of Duke Energy 
that may not be distributed to Duke Energy in the form of a loan or dividend does 
not exceed a material amount of Duke Energy’s net assets. Duke Energy does 
not have any legal or other restrictions on paying common stock dividends to 
shareholders out of its consolidated equity accounts. Although these restrictions 
cap the amount of funding the various operating subsidiaries can provide 
to Duke Energy, management does not believe these restrictions will have a 
significant impact on Duke Energy’s ability to access cash to meet its payment 
of dividends on common stock and other future funding obligations.

PART IICASH FLOWS FROM OPERATING ACTIVITIES

Cash flows from operations of Electric Utilities and Infrastructure and Gas 
Utilities and Infrastructure are primarily driven by sales of electricity and natural 
gas, respectively, and costs of operations. These cash flows from operations 
are relatively stable and comprise a substantial portion of Duke Energy’s 
operating cash flows. Weather conditions, working capital and commodity price 
fluctuations and unanticipated expenses including unplanned plant outages, 
storms, legal costs and related settlements can affect the timing and level of 
cash flows from operations.

As part of Duke Energy’s continued effort to improve its cash flows 
from operations and liquidity, Duke Energy works with vendors to improve 
terms and conditions, including the extension of payment terms. To support 
this effort, Duke Energy established a supply chain finance program (the 
“program”) in 2020, under which suppliers, at their sole discretion, may sell 
their receivables from Duke Energy to the participating financial institution. The 
financial institution administers the program. Duke Energy does not issue any 
guarantees with respect to the program and does not participate in negotiations 
between suppliers and the financial institution. Duke Energy does not have an 
economic interest in the supplier’s decision to participate in the program and 
receives no interest, fees or other benefit from the financial institution based 
on supplier participation in the program. Suppliers’ decisions on which invoices 
are sold do not impact Duke Energy’s payment terms, which are based on 
commercial terms negotiated between Duke Energy and the supplier regardless 
of program participation. A significant deterioration in the credit quality of Duke 
Energy, economic downturn or changes in the financial markets could limit the 
financial institutions willingness to participate in the program. Duke Energy 
does not believe such risk would have a material impact on our cash flows from 
operations or liquidity, as substantially all our payments are made outside the 
program.

Duke Energy believes it has sufficient liquidity resources through the 
commercial paper markets, and ultimately, the Master Credit Facility, to support 
these operations. Cash flows from operations are subject to a number of other 
factors, including, but not limited to, regulatory constraints, economic trends 
and market volatility (see Item 1A, “Risk Factors,” for additional information).

DEBT ISSUANCES

Depending on availability based on the issuing entity, the credit rating of 
the issuing entity, and market conditions, the Subsidiary Registrants prefer to 
issue first mortgage bonds and secured debt, followed by unsecured debt. This 
preference is the result of generally higher credit ratings for first mortgage bonds 
and secured debt, which typically result in lower interest costs. Duke Energy 
Corporation primarily issues unsecured debt.

In 2021, Duke Energy anticipates issuing additional securities of $8 billion 

through debt capital markets. Additionally, Duke Energy may utilize other 
instruments, including equity-content securities, such as preferred stock. 
Proceeds will primarily be for the purpose of funding capital expenditures 
and debt maturities. See to Note 6 to the Consolidated Financial Statements, 
“Debt and Credit Facilities,” for further information regarding significant debt 
issuances in 2020.

Duke Energy’s capitalization is balanced between debt and equity as 

shown in the table below. 

Equity

Debt

Projected 2021

Actual 2020

Actual 2019

44 %

56 %

44%

56%

44 %

56 %

Restrictive Debt Covenants

Duke Energy’s debt and credit agreements contain various financial and 

other covenants. Duke Energy’s Master Credit Facility contains a covenant 
requiring the debt-to-total capitalization ratio to not exceed 65% for each 
borrower, excluding Piedmont, and 70% for Piedmont. Failure to meet those 

covenants beyond applicable grace periods could result in accelerated due dates 
and/or termination of the agreements or sublimits thereto. As of December 31, 
2020, each of the Duke Energy Registrants was in compliance with all 
covenants related to their debt agreements. In addition, some credit agreements 
may allow for acceleration of payments or termination of the agreements due to 
nonpayment, or acceleration of other significant indebtedness of the borrower or 
some of its subsidiaries. None of the debt or credit agreements contain material 
adverse change clauses.

Credit Ratings

Moody’s Investors Service, Inc. and S&P provide credit ratings for 
various Duke Energy Registrants. During January 2021, S&P downgraded the 
issuer credit rating for Duke Energy (Parent) and all of its subsidiaries senior 
unsecured debt, excluding Progress Energy, from A- to BBB+. Additionally, 
S&P downgraded the credit rating for Duke Energy (Parent) and Progress 
Energy senior unsecured debt from BBB+ to BBB. As part of the credit rating 
report, S&P affirmed their credit rating on senior secured debt for Duke Energy 
Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and 
Duke Energy Indiana, while also affirming the short-term and commercial 
paper credit ratings. These actions followed a December 2020, report by S&P 
to revise the credit rating outlook from stable to negative for Duke Energy and 
all its subsidiaries. As a result of the downgrade, credit rating outlooks returned 
to stable. Additionally, during October 2020, Moody’s revised their credit rating 
outlook for Duke Energy (Parent), Duke Energy Carolinas and Duke Energy 
Progress from stable to negative and in February 2021, revised the credit rating 
outlook for these same registrants to review for downgrade. The following table 
includes Duke Energy and certain subsidiaries’ credit ratings and ratings outlook 
as of February 2021.

Duke Energy Corporation
Issuer Credit Rating
Senior Unsecured Debt
Commercial Paper
Duke Energy Carolinas 
Senior Secured Debt
Senior Unsecured Debt
Progress Energy 
Senior Unsecured Debt
Duke Energy Progress
Senior Secured Debt
Senior Unsecured Debt
Duke Energy Florida 
Senior Secured Debt
Senior Unsecured Debt
Duke Energy Ohio 
Senior Secured Debt
Senior Unsecured Debt
Duke Energy Indiana 
Senior Secured Debt
Senior Unsecured Debt
Duke Energy Kentucky
Senior Unsecured Debt
Piedmont Natural Gas
Senior Unsecured

Moody’s

Review for Downgrade
Baa1
Baa1
P-2
Review for Downgrade
Aa2
A1
Stable
Baa1
Review for Downgrade
Aa3
A2
Stable
A1
A3
Stable
A2
Baa1
Stable
Aa3
A2
Stable
Baa1
Stable
A3

S&P

Stable
BBB+
BBB
A-2
Stable
A
BBB+
Stable
BBB
Stable
A
BBB+
Stable
A
BBB+
Stable
A
BBB+
Stable
A
BBB+
Stable
BBB+
Stable
BBB+

Credit ratings are intended to provide credit lenders a framework for 
comparing the credit quality of securities and are not a recommendation to buy, 
sell or hold. The Duke Energy Registrants’ credit ratings are dependent on the 
rating agencies’ assessments of their ability to meet their debt principal and 
interest obligations when they come due. If, as a result of market conditions 
or other factors, the Duke Energy Registrants are unable to maintain current 
balance sheet strength, or if earnings and cash flow outlook materially 
deteriorates, credit ratings could be negatively impacted.

48

PART IICash Flow Information

The following table summarizes Duke Energy’s cash flows for the two most recently completed fiscal years.

(in millions) 

Cash flows provided by (used in): 

Operating activities 

Investing activities 

Financing activities 

Net 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 

OPERATING CASH FLOWS

Years Ended December 31,

2020

2019

$

8,856 

$

8,209 

(10,604)

1,731 

(11,957)

3,730 

(17)

573 

556 

$

$

(18)

591 

573 

The following table summarizes key components of Duke Energy’s operating cash flows for the two most recently completed fiscal years.

(in millions) 

Net income 

Non-cash adjustments to net income 

Payments for AROs

Refund of AMT credit carryforwards

Working capital 

Net cash provided by operating activities 

Years Ended December 31,

2020

2019

Variance

$

1,082 

$

3,571 

$

(2,489)

8,343 

5,737 

2,606 

(610)

572 

(531)

(746)

573 

(926)

$

8,856 

$

8,209 

$

136 

(1)

395 

647 

The variance was driven primarily by:

• a $117 million increase in net income after adjustment for non-cash 

items primarily due to increases in current year non-cash adjustments, 
partially offset by decreases in revenues due to lower sales volumes, 
accelerated refund of fuel costs at Duke Energy Florida in response to 
the COVID-19 pandemic and lower wholesale revenue driven by the 
CCR Settlement Agreement; 

• a $395 million decrease in cash outflows from working capital primarily 
due to fluctuations in inventory levels, accounts payable levels and 
lower income taxes paid in the current year; and

• a $136 million decrease in payments for AROs.

INVESTING CASH FLOWS

The following table summarizes key components of Duke Energy’s investing cash flows for the two most recently completed fiscal years.

(in millions) 

Capital, investment and acquisition expenditures, net of return of investment capital

Debt and equity securities, net 

Other investing items 

Net cash used in investing activities 

Years Ended December 31,

2020

2019

Variance

$ (10,144)

$ (11,435) $

1,291 

(62)

(398)

(5)

(517)

(57)

119 

$ (10,604)

$ (11,957) $

1,353 

The primary use of cash related to investing activities is capital, investment and acquisition expenditures, net of return of investment capital detailed by 
reportable business segment in the following table. The decrease relates primarily to decreases in capital expenditures due to lower overall investments in the Electric 
Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables segments.

(in millions) 

Electric Utilities and Infrastructure

Gas Utilities and Infrastructure

Commercial Renewables

Other 

Total capital, investment and acquisition expenditures, net of return of investment capital

49

Years Ended December 31,

2020

2019

Variance

$

7,629 

$

8,258  $

1,309 

1,075 

264 

1,533 

1,423 

221 

(629)

(224)

(348)

43 

$ 10,277 

$

11,435  $

(1,158)

PART IIFINANCING CASH FLOWS

The following table summarizes key components of Duke Energy’s financing cash flows for the two most recently completed fiscal years.

(in millions) 

Issuance of common stock 

Issuance of preferred stock

Issuances of long-term debt, net 

Notes payable and commercial paper 

Dividends paid 

Contributions from noncontrolling interests

Other financing items 

Net cash provided by financing activities 

Years Ended December 31,

2020

2019

Variance

$

2,745 

$

384 

$

2,361 

— 

1,824 

(319)

(2,812)

426 

(133)

1,962 

3,615 

(380)

(2,668)

843 

(26)

(1,962)

(1,791)

61 

(144)

(417)

(107)

$

1,731 

$

3,730 

$

(1,999)

The variance was driven primarily by:

Partially offset by:

• a $1,962 million decrease in proceeds from the issuance of preferred 

• a $2,361 million increase in proceeds from the issuance of common 

stock; 

stock, primarily from the settlement of equity forwards.

• a $1,791 million net decrease in proceeds from issuances of long-term 
debt primarily due to timing of issuances and redemptions of long-term 
debt; and 

• a $417 million decrease in contributions from noncontrolling interests, 
primarily due to $415 million related to the sale of a noncontrolling 
interest in the Commercial Renewables segment in 2019. 

Off-Balance Sheet Arrangements

Duke Energy and certain of its subsidiaries enter into guarantee 

arrangements in the normal course of business to facilitate commercial 
transactions with third parties. These arrangements include performance 
guarantees, standby letters of credit, debt guarantees, surety bonds and 
indemnifications.

Most of the guarantee arrangements entered into by Duke Energy enhance 

the credit standing of certain subsidiaries, non-consolidated entities or less 
than wholly owned entities, enabling them to conduct business. As such, these 
guarantee arrangements involve elements of performance and credit risk, which 
are not always included on the Consolidated Balance Sheets. The possibility 
of Duke Energy, either on its own or on behalf of Spectra Capital through 
indemnification agreements entered into as part of the January 2, 2007, spin-off 
of Spectra Energy Corp, having to honor its contingencies is largely dependent 
upon the future operations of the subsidiaries, investees and other third parties, 
or the occurrence of certain future events.

Duke Energy performs ongoing assessments of its respective guarantee 

obligations to determine whether any liabilities have been incurred as a result of 
potential increased nonperformance risk by third parties for which Duke Energy 
has issued guarantees. See Note 7 to the Consolidated Financial Statements, 
“Guarantees and Indemnifications,” for further details of the guarantee 
arrangements. Issuance of these guarantee arrangements is not required for the 
majority of Duke Energy’s operations. Thus, if Duke Energy discontinued issuing 
these guarantees, there would not be a material impact to the consolidated 
results of operations, cash flows or financial position.

Other than the guarantee arrangements discussed above and off-balance 

sheet debt related to non-consolidated VIEs, Duke Energy does not have any 
material off-balance sheet financing entities or structures. For additional 
information, see Note 17 to the Consolidated Financial Statements, “Variable 
Interest Entities.”

50

PART IIContractual Obligations

Duke Energy enters into contracts that require payment of cash at certain specified periods, based on certain specified minimum quantities and prices. The 

following table summarizes Duke Energy’s contractual cash obligations as of December 31, 2020.

(in millions) 
Long-term debt(a)
Interest payments on long-term debt(b)
Finance leases(c)
Operating leases(c)
Purchase obligations:(d)

Fuel and purchased power(e)(f)
Other purchase obligations(g)

Nuclear decommissioning trust annual funding(h)
Land easements(i)
Total contractual cash obligations(j)(k)

Payments Due By Period

Less than
1 year
(2021)
4,110 
2,099 
186 
229 

3,489 
8,850 
20 
12 
18,995 

$

$

2-3 years
(2022 &
2023)
8,011 
3,898 
347 
414 

4,248 
974 
40 
24 
17,956 

$

$

4-5 years
(2024 &
2025)
4,408 
3,577 
170 
348 

2,998 
52 
40 
24 
11,617 

$

$

More than
5 years
(2026 &
beyond)
41,605 
24,284 
762 
870 

$

5,856 
40 
263 
340 
74,020 

$

$

Total
58,134 
33,858 
1,465 
1,861 

16,591 
9,916 
363 
400 
$ 122,588 

(a)  See Note 6 to the Consolidated Financial Statements, “Debt and Credit Facilities.”
(b) 
(c)  See Note 5 to the Consolidated Financial Statements, “Leases.” Amounts in the table above include the interest component of finance leases based on the interest rates stated in the lease agreements and exclude certain 

Interest payments on variable rate debt instruments were calculated using December 31, 2020, interest rates and holding them constant for the life of the instruments.

related executory costs. Amounts exclude contingent lease obligations.

(d)  Current liabilities, except for current maturities of long-term debt, and purchase obligations reflected on the Consolidated Balance Sheets have been excluded from the above table.
(e) 

Includes firm capacity payments that provide Duke Energy with uninterrupted firm access to electricity transmission capacity and natural gas transportation contracts, as well as undesignated contracts and contracts that 
qualify as NPNS. For contracts where the price paid is based on an index, the amount is based on market prices at December 31, 2020, or the best projections of the index. For certain of these amounts, Duke Energy may 
settle on a net cash basis since Duke Energy has entered into payment netting arrangements with counterparties that permit Duke Energy to offset receivables and payables with such counterparties.

(f)  Amounts exclude obligations under the OVEC PPA. See Note 17 to the Consolidated Financial Statements, “Variable Interest Entities,” for additional information.
(g) 

Includes contracts for software, telephone, data and consulting or advisory services. Amount also includes contractual obligations for EPC costs for new generation plants, wind and solar facilities, plant refurbishments, 
maintenance and day-to-day contract work and commitments to buy certain products. Amount excludes certain open purchase orders for services that are provided on demand for which the timing of the purchase cannot be 
determined.

(h)  Related to future annual funding obligations to NDTF through nuclear power stations’ relicensing dates. See Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations.”
(i)  Related to Commercial Renewables wind facilities.
(j)  Unrecognized tax benefits of $125 million are not reflected in this table as Duke Energy cannot predict when open income tax years will close with completed examinations. See Note 23 to the Consolidated Financial 

Statements, “Income Taxes.”

(k)  The table above excludes reserves for litigation, environmental remediation, asbestos-related injuries and damages claims and self-insurance claims (see Note 4 to the Consolidated Financial Statements, “Commitments 

and Contingencies”) because Duke Energy is uncertain as to the timing and amount of cash payments that will be required. Additionally, the table above excludes annual insurance premiums that are necessary to operate the 
business, including nuclear insurance (see Note 4 to the Consolidated Financial Statements, “Commitments and Contingencies”), funding of pension and other post-retirement benefit plans (see Note 22 to the Consolidated 
Financial Statements, “Employee Benefit Plans”), AROs, including ash management expenditures (see Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations”) and regulatory liabilities (see Note 3 
to the Consolidated Financial Statements, “Regulatory Matters”) because the amount and timing of the cash payments are uncertain. Also excluded are Deferred Income Taxes and ITCs recorded on the Consolidated Balance 
Sheets since cash payments for income taxes are determined based primarily on taxable income for each discrete fiscal year. 

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Risk Management Policies

The Enterprise Risk Management policy framework at Duke Energy 
includes strategy, operational, project execution and financial or transaction 
related risks. Enterprise Risk Management includes market risk as part of the 
financial and transaction related risks in its framework. 

Duke Energy is exposed to market risks associated with commodity prices, 

interest rates and equity prices. Duke Energy has established comprehensive 
risk management policies to monitor and manage these market risks. Duke 
Energy’s Chief Executive Officer and Chief Financial Officer are responsible for 
the overall approval of market risk management policies and the delegation 
of approval and authorization levels. The Finance and Risk Management 
Committee of the Board of Directors receives periodic updates from the Chief 
Risk Officer and other members of management on market risk positions, 
corporate exposures and overall risk management activities. The Chief Risk 
Officer is responsible for the overall governance of managing commodity price 
risk, including monitoring exposure limits.

The following disclosures about market risk contain forward-looking 
statements that involve estimates, projections, goals, forecasts, assumptions, 
risks and uncertainties that could cause actual results or outcomes to differ 

materially from those expressed in the forward-looking statements. See 
Item 1A, “Risk Factors,” and “Cautionary Statement Regarding Forward-Looking 
Information” for a discussion of the factors that may impact any such forward-
looking statements made herein.

Commodity Price Risk

Duke Energy is exposed to the impact of market fluctuations in the prices 
of electricity, coal, natural gas and other energy-related products marketed and 
purchased as a result of its ownership of energy-related assets. Duke Energy’s 
exposure to these fluctuations is primarily limited by the cost-based regulation 
of its regulated operations as these operations are typically allowed to recover 
substantially all of these costs through various cost-recovery clauses, including 
fuel clauses, formula-based contracts, or other cost-sharing mechanisms. 
While there may be a delay in timing between when these costs are incurred and 
when they are recovered through rates, changes from year to year generally do 
not have a material impact on operating results of these regulated operations. 
Within Duke Energy’s Commercial Renewables segment, the company has 
limited exposure to market price fluctuations in prices of energy-related 
products as a result of its ownership of renewable assets.

Price risk represents the potential risk of loss from adverse changes in the 
market price of electricity or other energy commodities. Duke Energy’s exposure 
to commodity price risk is influenced by a number of factors, including contract 

51

PART II 
 
 
 
 
size, length, market liquidity, market conditions, location and unique or specific 
contract terms. Duke Energy employs established policies and procedures to 
manage risks associated with these market fluctuations, which may include 
using various commodity derivatives, such as swaps, futures, forwards and 
options. For additional information, see Note 14 to the Consolidated Financial 
Statements, “Derivatives and Hedging.”

Hedging Strategies

Duke Energy closely monitors risks associated with commodity price 

changes on its future operations and, where appropriate, uses various 
commodity instruments such as electricity, coal and natural gas forward 
contracts and options to mitigate the effect of such fluctuations on operations. 
Duke Energy’s primary use of energy commodity derivatives is to hedge 
against exposure to the prices of power, fuel for generation and natural gas 
for customers. Additionally, Duke Energy’s Commercial Renewables business 
may enter into short-term or long-term hedge agreements to manage price risk 
associated with project output.

The majority of instruments used to manage Duke Energy’s commodity 
price exposure are either not designated as hedges or do not qualify for hedge 
accounting. These instruments are referred to as undesignated contracts. 
Mark-to-market changes for undesignated contracts entered into by regulated 
businesses are reflected as regulatory assets or liabilities on the Consolidated 
Balance Sheets. Undesignated contracts entered into by nonregulated 
businesses are marked-to-market each period, with changes in the fair value of 
the derivative instruments reflected in earnings.

Duke Energy may also enter into other contracts that qualify for the NPNS 
exception. When a contract meets the criteria to qualify as NPNS, Duke Energy 
applies such exception. Income recognition and realization related to NPNS 
contracts generally coincide with the physical delivery of the commodity. For 
contracts qualifying for the NPNS exception, no recognition of the contract’s fair 
value in the Consolidated Financial Statements is required until settlement of 
the contract as long as the transaction remains probable of occurring.

Generation Portfolio Risks 

The Duke Energy Registrants optimize the value of their generation 

portfolios, which include generation assets, fuel and emission allowances. 
Modeled forecasts of future generation output and fuel requirements are based 
on forward power and fuel markets. The component pieces of the portfolio 
are bought and sold based on models and forecasts of generation in order to 
manage the economic value of the portfolio in accordance with the strategies of 
the business units. 

For the Electric Utilities and Infrastructure segment, the generation portfolio 

not utilized to serve retail operations or committed load is subject to commodity 
price fluctuations. However, the impact on the Consolidated Statements of 
Operations is partially offset by mechanisms in these regulated jurisdictions that 
result in the sharing of net profits from these activities with retail customers. 

Interest Rate Risk

Duke Energy is exposed to risk resulting from changes in interest rates as 

a result of its issuance or anticipated issuance of variable and fixed-rate debt 
and commercial paper. Duke Energy manages interest rate exposure by limiting 
variable-rate exposures to a percentage of total debt and by monitoring the 
effects of market changes in interest rates. Duke Energy also enters into financial 
derivative instruments, which may include instruments such as, but not limited to, 
interest rate swaps, swaptions and U.S. Treasury lock agreements to manage and 
mitigate interest rate risk exposure. See Notes 1, 6, 14 and 16 to the Consolidated 
Financial Statements, “Summary of Significant Accounting Policies,” “Debt and 
Credit Facilities,” “Derivatives and Hedging,” and “Fair Value Measurements.”
Duke Energy had $7.6 billion of unhedged long- and short-term floating 
interest rate exposure at December 31, 2020. The impact of a 100-basis point 
change in interest rates on pretax income is approximately $76 million at 

December 31, 2020. This amount was estimated by considering the impact of 
the hypothetical interest rates on variable-rate securities outstanding, adjusted 
for interest rate hedges as of December 31, 2020.

Certain Duke Energy Registrants have variable-rate debt and manage 
interest rate risk by entering into financial contracts including interest rate 
swaps. See Notes 6 and 14 to the Consolidated Financial Statements, 
“Debt and Credit Facilities” and “Derivatives and Hedging.” Such financial 
arrangements generally are indexed based upon LIBOR, which is expected to be 
phased out by the end of 2021. The Secured Overnight Financing Rate (SOFR) 
has been identified by regulators and industry participants as the preferred 
successor rate for U.S. dollar-based LIBOR at that time. Impacted financial 
arrangements extending beyond 2021 may require contractual amendment or 
termination and renegotiation to fully adapt to a post-LIBOR environment, and 
there may be uncertainty regarding the effectiveness of any such alternative 
index methodologies. Alternative index provisions are being assessed and 
incorporated into new financial arrangements that extend beyond 2021. 
Additionally, the progress of the phaseout is being monitored, including proposed 
transition relief from the FASB.

Credit Risk

Credit risk represents the loss that the Duke Energy Registrants would 

incur if a counterparty fails to perform under its contractual obligations. Where 
exposed to credit risk, the Duke Energy Registrants analyze the counterparty’s 
financial condition prior to entering into an agreement and monitor exposure 
on an ongoing basis. The Duke Energy Registrants establish credit limits where 
appropriate in the context of contractual arrangements and monitor such limits. 
To reduce credit exposure, the Duke Energy Registrants seek to include 
netting provisions with counterparties, which permit the offset of receivables 
and payables with such counterparties. The Duke Energy Registrants also 
frequently use master agreements with credit support annexes to further 
mitigate certain credit exposures. The master agreements provide for a 
counterparty to post cash or letters of credit to the exposed party for exposure 
in excess of an established threshold. The threshold amount represents a 
negotiated unsecured credit limit for each party to the agreement, determined in 
accordance with the Duke Energy Registrants’ internal corporate credit practices 
and standards. Collateral agreements generally also provide that the failure to 
post collateral when required is sufficient cause to terminate transactions and 
liquidate all positions. 

The Duke Energy Registrants also obtain cash, letters of credit, or 
surety bonds from certain counterparties to provide credit support outside of 
collateral agreements, where appropriate, based on a financial analysis of the 
counterparty and the regulatory or contractual terms and conditions applicable 
to each transaction. See Note 14 to the Consolidated Financial Statements, 
“Derivatives and Hedging,” for additional information regarding credit risk 
related to derivative instruments. 

The Duke Energy Registrants’ principal counterparties for its electric 
and natural gas businesses are RTOs, distribution companies, municipalities, 
electric cooperatives and utilities located throughout the U.S. Exposure to 
these entities consists primarily of amounts due to Duke Energy Registrants for 
delivered electricity. Additionally, there may be potential risks associated with 
remarketing of energy and capacity in the event of default by wholesale power 
customers. The Duke Energy Registrants have concentrations of receivables 
from certain of such entities that may affect the Duke Energy Registrants’ credit 
risk. 

The Duke Energy Registrants are also subject to credit risk from 

transactions with their suppliers that involve prepayments or milestone 
payments in conjunction with outsourcing arrangements, major construction 
projects and certain commodity purchases. The Duke Energy Registrants’ credit 
exposure to such suppliers may take the form of increased costs or project 
delays in the event of nonperformance. The Duke Energy Registrants’ frequently 
require guarantees or letters of credit from suppliers to mitigate this credit risk.

52

PART IICredit risk associated with the Duke Energy Registrants’ service to 
residential, commercial and industrial customers is generally limited to 
outstanding accounts receivable. The Duke Energy Registrants mitigate this 
credit risk by requiring tariff customers to provide a cash deposit, letter of credit 
or surety bond until a satisfactory payment history is established, subject to 
the rules and regulations in effect in each retail jurisdiction at which time the 
deposit is typically refunded. Charge-offs for retail customers have historically 
been insignificant to the operations of the Duke Energy Registrants and are 
typically recovered through retail rates. Management continually monitors 
customer charge-offs, payment patterns and the impact of current economic 
conditions on customers’ ability to pay their outstanding balance to ensure the 
adequacy of bad debt reserves. 

In response to the COVID-19 pandemic, in March 2020, the Duke Energy 

Registrants announced a suspension of disconnections for nonpayment to 
be effective throughout the national emergency. While disconnections have 
resumed, the company continues to offer flexible options to customers struggling 
with the pandemic and the economic fallout, including extended payment 
arrangements to satisfy delinquent balances. In addition, the Duke Energy 
Registrants are monitoring the effects of the resultant economic slowdown on 
counterparties’ abilities to perform under their contractual obligations. The 
Duke Energy Registrants have observed a significant increase in utility account 
arrears, which were roughly double historical levels as of December 31, 2020. 
There is an expectation of an increase in charge-offs in the future. See Notes 1, 
3 and 18 to the Consolidated Financial Statements, “Summary of Significant 
Accounting Policies,” “Regulatory Matters” and “Revenue,” respectively, for 
more information. Duke Energy Ohio and Duke Energy Indiana sell certain of 
their accounts receivable and related collections through CRC, a Duke Energy 
consolidated VIE. Losses on collection are first absorbed by the equity of CRC 
and next by the subordinated retained interests held by Duke Energy Ohio, Duke 
Energy Kentucky and Duke Energy Indiana. See Note 17 to the Consolidated 
Financial Statements, “Variable Interest Entities.”

The Duke Energy Registrants provide certain non-tariff services, primarily 
to large commercial and industrial customers in which incurred costs, including 
invested capital, are intended to be recovered from the individual customer 
and therefore are not subject to rate recovery in the event of customer default. 
Customer creditworthiness is assessed prior to entering into these transactions. 
Credit concentration related to these transactions exists for certain of these 
customers. 

Duke Energy’s Commercial Renewables segment enters into long-term 
agreements with certain creditworthy buyers that may not include the right to 
call for collateral in the event of a credit rating downgrade. Credit concentration 
exists to certain counterparties on these agreements, including entities that 
could be subject to wildfire liability. Additionally, Commercial Renewables may 
invest in projects for which buyers are below investment grade, although such 
buyers are required to post negotiated amounts of credit support. Also, power 
sales agreements and/or hedges of project output are generally for an initial 
term that does not cover the entire life of the asset. As a result, Commercial 
Renewables is exposed to market price risk and credit risk related to these 
agreements. 

Duke Energy Carolinas has third-party insurance to cover certain 
losses related to asbestos-related injuries and damages above an aggregate 
self-insured retention. See Note 4 to the Consolidated Financial Statements, 
“Commitments and Contingencies” for information on asbestos-related injuries 
and damages claims.

The Duke Energy Registrants also have credit risk exposure through 
issuance of performance and financial guarantees, letters of credit and surety 
bonds on behalf of less than wholly owned entities and third parties. Where 
the Duke Energy Registrants have issued these guarantees, it is possible that 
they could be required to perform under these guarantee obligations in the 
event the obligor under the guarantee fails to perform. Where the Duke Energy 
Registrants have issued guarantees related to assets or operations that have 
been disposed of via sale, they attempt to secure indemnification from the buyer 
against all future performance obligations under the guarantees. See Note 7 to 

53

the Consolidated Financial Statements, “Guarantees and Indemnifications,” for 
further information on guarantees issued by the Duke Energy Registrants. 

Based on the Duke Energy Registrants’ policies for managing credit risk, 

their exposures and their credit and other reserves, the Duke Energy Registrants 
do not currently anticipate a materially adverse effect on their consolidated 
financial position or results of operations as a result of nonperformance by any 
counterparty.

Marketable Securities Price Risk

As described further in Note 15 to the Consolidated Financial Statements, 

“Investments in Debt and Equity Securities,” Duke Energy invests in debt 
and equity securities as part of various investment portfolios to fund certain 
obligations. The vast majority of investments in equity securities are within the 
NDTF and assets of the various pension and other post-retirement benefit plans.

Pension Plan Assets

Duke Energy maintains investments to facilitate funding the costs of 
providing non-contributory defined benefit retirement and other post-retirement 
benefit plans. These investments are exposed to price fluctuations in equity 
markets and changes in interest rates. The equity securities held in these 
pension plans are diversified to achieve broad market participation and 
reduce the impact of any single investment, sector or geographic region. Duke 
Energy has established asset allocation targets for its pension plan holdings, 
which take into consideration the investment objectives and the risk profile 
with respect to the trust in which the assets are held. See Note 22 to the 
Consolidated Financial Statements, “Employee Benefit Plans,” for additional 
information regarding investment strategy of pension plan assets.

A significant decline in the value of plan asset holdings could require Duke 

Energy to increase funding of its pension plans in future periods, which could 
adversely affect cash flows in those periods. Additionally, a decline in the fair 
value of plan assets, absent additional cash contributions to the plan, could 
increase the amount of pension cost required to be recorded in future periods, 
which could adversely affect Duke Energy’s results of operations in those 
periods.

Nuclear Decommissioning Trust Funds

As required by the NRC, NCUC, PSCSC and FPSC, subsidiaries of Duke 
Energy maintain trust funds to fund the costs of nuclear decommissioning. As 
of December 31, 2020, these funds were invested primarily in domestic and 
international equity securities, debt securities, cash and cash equivalents and 
short-term investments. Per the NRC, Internal Revenue Code, NCUC, PSCSC 
and FPSC requirements, these funds may be used only for activities related to 
nuclear decommissioning. These investments are exposed to price fluctuations 
in equity markets and changes in interest rates. Duke Energy actively monitors 
its portfolios by benchmarking the performance of its investments against 
certain indices and by maintaining, and periodically reviewing, target allocation 
percentages for various asset classes. 

Accounting for nuclear decommissioning recognizes that costs are 

recovered through retail and wholesale rates; therefore, fluctuations in 
investment prices do not materially affect the Consolidated Statements of 
Operations, as changes in the fair value of these investments are primarily 
deferred as regulatory assets or regulatory liabilities pursuant to Orders 
by the NCUC, PSCSC, FPSC and FERC. Earnings or losses of the funds will 
ultimately impact the amount of costs recovered through retail and wholesale 
rates. See Note 9 to the Consolidated Financial Statements, “Asset Retirement 
Obligations,” for additional information regarding nuclear decommissioning 
costs. See Note 15 to the Consolidated Financial Statements, “Investments in 
Debt and Equity Securities,” for additional information regarding NDTF assets.

PART IIOTHER MATTERS

Environmental Regulations

Coal Ash Management Act of 2014

The Duke Energy Registrants are subject to federal, state and local 
regulations regarding air and water quality, hazardous and solid waste disposal, 
coal ash and other environmental matters. These regulations can be changed 
from time to time and result in new obligations of the Duke Energy Registrants.
On May 14, 2020, the five-year probation period following the Dan 
River coal ash spill ended. The court-appointed monitor confirmed in U.S. 
District Court for the Eastern District of North Carolina that Duke Energy met or 
exceeded every obligation throughout the process. Separately, in a final report to 
the EPA, it was noted that the company made significant enhancements to its 
Ethics and Compliance Program and its environmental compliance programs.

The following sections outline various proposed and recently enacted 
legislation and regulations that may impact the Duke Energy Registrants. Refer 
to Note 3 to the Consolidated Financial Statements, “Regulatory Matters,” for 
further information regarding potential plant retirements and regulatory filings 
related to the Duke Energy Registrants.

Coal Combustion Residuals

In April 2015, EPA published a rule to regulate the disposal of CCR 
from electric utilities as solid waste. The federal regulation classifies CCR 
as nonhazardous waste and allows for beneficial use of CCR with some 
restrictions. The regulation applies to all new and existing landfills, new 
and existing surface impoundments receiving CCR and existing surface 
impoundments located at stations generating electricity (regardless of fuel 
source), which were no longer receiving CCR but contained liquids as of 
the effective date of the rule. The rule establishes requirements regarding 
landfill design, structural integrity design and assessment criteria for surface 
impoundments, groundwater monitoring, protection and remedial procedures 
and other operational and reporting procedures to ensure the safe disposal and 
management of CCR. 

On July 17, 2018, EPA issued a final rule (Phase 1, Part 1) revising 

certain closure deadlines and groundwater protection standards in the CCR 
rule. The rule does not change the primary requirements for groundwater 
monitoring, corrective action, inspections and maintenance, and closure, and 
thus does not materially affect Duke Energy’s coal ash basin closure plans or 
compliance obligations under the CCR rule. On October 22, 2018, a coalition 
of environmental groups filed a petition for review in the U.S. Court of Appeals 
for the District of Columbia (D.C. Circuit Court) challenging EPA’s final Phase 1, 
Part 1 revisions to the CCR rule. On March 13, 2019, the D.C. Circuit Court 
issued an order in the Phase 1, Part 1 litigation granting EPA’s motion to remand 
the rule without vacatur. To date, EPA has finalized two notice-and-comment 
rulemakings to implement the court’s decision on remand. The “Part A” rule, 
which was promulgated on August 28, 2020, establishes an April 11, 2021 
deadline to cease placement of CCR and non-CCR waste streams into unlined 
ash basins and initiate closure, and the “Part B” rule, which was promulgated 
on November 12, 2020, establishes procedures to allow facilities to request 
approval to operate an existing CCR surface impoundment with an alternate 
liner. A future rulemaking is expected to address legacy impoundments. Duke 
Energy does not expect these rulemakings to have a material impact in light of 
its progress in closing CCR units across the enterprise.

In addition to the requirements of the federal CCR rule, CCR landfills and 

surface impoundments will continue to be regulated by the states. Cost recovery 
for future expenditures will be pursued through the normal ratemaking process 
with federal and state utility commissions and via wholesale contracts, which 
permit recovery of necessary and prudently incurred costs associated with Duke 
Energy’s regulated operations. For more information, see Notes 3 and 9 to the 
Consolidated Financial Statements, “Regulatory Matters” and “Asset Retirement 
Obligations,” respectively. 

AROs recorded on the Duke Energy Carolinas and Duke Energy Progress 
Consolidated Balance Sheets at December 31, 2020, and December 31, 2019, 
include the legal obligation for closure of coal ash basins and the disposal 
of related ash as a result of the Coal Ash Act, the EPA CCR rule and other 
agreements. The Coal Ash Act includes a variance procedure for compliance 
deadlines and other issues surrounding the management of CCR and CCR 
surface impoundments and prohibits cost recovery in customer rates for 
unlawful discharge of ash impoundment waters occurring after January 1, 2014. 
The Coal Ash Act leaves the decision on cost recovery determinations related to 
closure of ash impoundments to the normal ratemaking processes before utility 
regulatory commissions. 

Consistent with the requirements of the Coal Ash Act, Duke Energy 
previously submitted comprehensive site assessments and groundwater 
corrective plans to NCDEQ. In addition, on December 31, 2019, Duke Energy 
submitted updated groundwater corrective action plans and site-specific coal 
ash impoundment closure plans to NCDEQ.

On April 1, 2019, NCDEQ issued a closure determination requiring Duke 
Energy Carolinas and Duke Energy Progress to excavate all remaining coal ash 
impoundments at the Allen, Belews Creek, Rogers, Marshall, Mayo and Roxboro 
facilities in North Carolina. On April 26, 2019, Duke Energy Carolinas and 
Duke Energy Progress filed Petitions for Contested Case Hearings in the Office 
of Administrative Hearings to challenge NCDEQ’s April 1 Order. On December 
31, 2019, Duke Energy Carolinas and Duke Energy Progress entered into a 
settlement agreement with NCDEQ and certain community groups under which 
Duke Energy Carolinas and Duke Energy Progress agreed to excavate seven of 
the nine remaining coal ash basins at these sites with ash moved to on-site 
lined landfills, including two at Allen, one at Belews Creek, one at Mayo, one 
at Roxboro, and two at Rogers. At the two remaining basins at Marshall and 
Roxboro, uncapped basin ash will be excavated and moved to lined landfills. 
Those portions of the basins at Marshall and Roxboro, which were previously 
filled with ash and on which permitted facilities were constructed, will not be 
disturbed and will be closed pursuant to other state regulations.

Following NCDEQ’s April 1 Order, Duke Energy estimated the incremental 

undiscounted cost to close the nine remaining impoundments by excavation 
would be approximately $4 billion to $5 billion, potentially increasing the total 
estimated costs to permanently close all ash basins in North Carolina and South 
Carolina to $9.5 billion to $10.5 billion. The settlement lowers the estimated 
total undiscounted cost to close the nine remaining basins by excavation by 
approximately $1.5 billion as compared to Duke Energy’s original estimate that 
followed the order. As a result, the estimated total cost to permanently close all 
ash basins in North Carolina and South Carolina is approximately $8 billion to 
$9 billion of which approximately $2.8 billion has been spent through 2020. 
The majority of the remaining spend is expected to occur over the next 
15 to 20 years.

Duke Energy has completed excavation of all coal ash at the Riverbend, 

Dan River and Sutton plants.

For further information on ash basins and recovery, see Notes 3 and 9 
to the Consolidated Financial Statements, “Regulatory Matters” and “Asset 
Retirement Obligations,” respectively.

Other Environmental Regulations

The Duke Energy Registrants are also subject to various federal, state and 

local laws regarding air and water quality, hazardous and solid waste disposal 
and other environmental matters, including the following:

• CWA

• Steam Effluent Limitation Guidelines

• Cross-State Air Pollution Rule

54

PART IIDuke Energy continues to comply with enacted environmental statutes 
and regulations even as certain of these regulations are in various stages of 
clarification, revision or legal challenge. The Duke Energy Registrants cannot 
predict the outcome of these matters.

Section 126 Petitions

On November 16, 2016, the state of Maryland filed a petition with EPA 

under Section 126 of the Clean Air Act alleging that 19 power plants, including 
two plants (three units) that Duke Energy Registrants own and operate, 
contribute to violations of EPA’s National Ambient Air Quality Standards (NAAQS) 
for ozone in the state of Maryland. On March 12, 2018, the state of New York 
filed a petition with EPA, also under Section 126 of the Clean Air Act, alleging 
that over 60 power plants, including five that Duke Energy Registrants own and 
operate, contribute to violations of EPA’s ozone NAAQS in the state of New York. 
Both Maryland and New York sought EPA orders requiring the states in which 
the named power plants operate impose more stringent nitrogen oxide emission 
limitations on the plants. On October 5, 2018, EPA denied the Maryland petition. 
That same day, Maryland appealed EPA’s denial. On October 18, 2019, EPA 
denied the New York petition, and New York appealed that decision on October 
29, 2019. On May 19, 2020, the U.S. Court of Appeals for the D.C. Circuit 
issued its decision, finding, with one exception, that EPA reasonably denied 
the Maryland petition. The court remanded one issue to EPA regarding target 
sources lacking catalytic controls. All of the Duke Energy units targeted have 
selective catalytic reduction, so the decision is favorable for these units.

A different panel of the same court heard oral argument in New York’s 
appeal of EPA’s denial of its Section 126 Petition on May 7, 2020, and on July 14, 
2020, the panel issued its decision remanding the Petition to EPA for further 
review. The Duke Energy Registrants cannot predict the outcome of this matter.

North Carolina Clean Energy Plan (NCCEP)

On October 29, 2018, Governor Roy Cooper signed an executive order 
calling for a 40% reduction in statewide greenhouse gas emissions by 2025. 
The order tasked the NCDEQ with developing a clean energy plan for North 
Carolina. In October 2019, the NCDEQ published its plan, which includes the 
reduction of electric power sector greenhouse gas emissions by 70% below 
2005 levels by 2030 and attainment of carbon neutrality by 2050, fostering 
long-term energy affordability and price stability for North Carolina’s residents 
and businesses by modernizing regulatory and planning processes, and 
acceleration of clean energy innovation to create economic opportunities for 
both rural and urban areas. Duke Energy Carolinas and Duke Energy Progress 
are significant stakeholders in this process. The magnitude and timing of 
investment in response to the NCCEP will depend on the speed of adoption 
and consensus developed by other stakeholders on how best to successfully 
transition to this clean energy future while establishing a regulatory model that 
incentivizes business decisions that benefit both the utilities and the public. The 
Duke Energy Registrants cannot predict the outcome of this matter.

Global Climate Change

On September 17, 2019, Duke Energy announced an updated climate 
strategy with new goals of at least 50% reduction in carbon emissions from 
electric generation by 2030 and net-zero carbon emissions from electric 
generation by 2050. On October 9, 2020, Duke Energy announced a new goal to 
achieve net-zero methane emissions from its natural gas distribution system by 
2030. Timelines and initiatives, as well as implementation of new technologies, 
will vary in each state in which the company operates and will involve 
collaboration with regulators, customers and other stakeholders.

The Duke Energy Registrants’ GHG emissions consist primarily of CO2 
and result primarily from operating a fleet of coal-fired and natural gas-fired 
power plants. Future levels of CO2 emissions will be influenced by variables 
that include economic conditions that affect electricity demand, fuel prices, 
market prices, compliance with new or existing regulations and the technologies 
deployed to generate the electricity necessary to meet customer demand.

The Duke Energy Registrants have taken actions that have resulted in a 
reduction of CO2 emissions over time. Actions have included the retirement of 
51 coal-fired electric generating units with a combined generating capacity of 
6,539 MW. Much of that capacity has been replaced with state-of-the-art highly 
efficient natural gas-fired generation that produces far fewer CO2 emissions 
per unit of electricity generated. Duke Energy also has made investments 
to expand its portfolio of wind and solar projects, increase EE offerings and 
ensure continued operations of its zero-CO2 emissions hydropower and nuclear 
plants. These efforts have diversified its system and significantly reduced 
CO2 emissions. Between 2005 and 2020, the Duke Energy Registrants have 
collectively lowered the CO2 emissions from their electricity generation by more 
than 40%, which potentially lowers the exposure to any future mandatory 
CO2 emission reduction requirements or carbon tax, whether as a result of 
federal legislation, EPA regulation, state regulation or other as yet unknown 
emission reduction requirement. Duke Energy will continue to explore the use of 
currently available and commercially demonstrated technology to reduce CO2 
emissions, including EE, wind, solar, storage, carbon capture, utilization and 
sequestration, the use of hydrogen and other low-carbon fuels and advanced 
nuclear. Duke Energy will adjust to evolving and innovative technologies in a way 
that balances the reliability and affordability that meet regulatory requirements 
and customer demands. Under any future scenario involving mandatory CO2 
limitations, the Duke Energy Registrants would plan to seek recovery of their 
compliance costs through appropriate regulatory mechanisms.

The Duke Energy Registrants recognize that scientists associate severe 
weather events with increasing levels of GHGs in the atmosphere and forecast 
the possibility these weather events could have a material impact on future 
results of operations should they occur more frequently and with greater 
severity. However, the uncertain nature of potential changes in extreme weather 
events (such as increased frequency, duration and severity), the long period 
of time over which any potential changes might take place and the inability to 
predict potential changes with any degree of accuracy, make estimating with 
any certainty any potential future financial risk to the Duke Energy Registrants’ 
operations difficult.

The Duke Energy Registrants annually, biennially or triennially prepare 

lengthy, forward-looking IRPs. These detailed, highly technical plans are based 
on the company’s thorough analysis of numerous factors that can impact the 
cost of producing and delivering electricity that influence long-term resource 
planning decisions. The IRP process helps to evaluate a range of options, taking 
into account stakeholder input as well as forecasts of future electricity demand, 
fuel prices, transmission improvements, new generating capacity, integration 
of renewables, energy storage, EE and demand response initiatives. The IRP 
process also helps evaluate potential environmental and regulatory scenarios to 
better mitigate policy and economic risks. The IRPs we file with regulators look 
out 10 to 20 years depending on the jurisdiction.

For a number of years, the Duke Energy Registrants have included a price 

on CO2 emissions in their IRP planning process to account for the potential 
regulation of CO2 emissions. Incorporating a price on CO2 emissions in the IRPs 
allows for the evaluation of existing and future resource needs against potential 
climate change policy risk in the absence of policy certainty. One of the challenges 
with using a CO2 price, especially in the absence of a clear and certain policy, is 
determining the appropriate price to use. To address this uncertainty and ensure 
the company remains agile, the Duke Energy Registrants typically use a range of 
potential CO2 prices to reflect a range of potential policy outcomes.

The Duke Energy Registrants routinely take steps to reduce the 
potential impact of severe weather events on their electric transmission and 
distribution systems and natural gas facilities. The steps include modernizing 
the electric grid through smart meters, storm hardening, self-healing and 
targeted undergrounding and applying lessons learned from previous storms to 
restoration efforts. The Duke Energy Registrants’ electric generating facilities 
and natural gas facilities are designed to withstand extreme weather events 
without significant damage. The Duke Energy Registrants maintain inventories of 
coal, oil and liquified natural gas to mitigate the effects of any potential short-
term disruption in fuel supply so they can continue to provide customers with an 
uninterrupted supply of electricity and/or natural gas. 

55

PART IIState Legislation

In 2017, the North Carolina General Assembly passed House Bill 589, 
and it was subsequently signed into law by the governor. The law includes, 
among other things, overall reform of the application of PURPA for new solar 
projects in the state, a requirement for the utility to procure renewable energy 
through a competitive bidding process administered by an independent third 
party and recovery of costs related to the competitive bidding process through 
a competitive procurement rider. The process used was approved by the NCUC 
to select projects that would deliver the lowest cost of renewable energy for 
customers.

In accordance with the provisions of House Bill 589, Duke Energy 
estimates the total competitive procurement will be approximately 1,185 to 
1,385 MW. Duke Energy will own or purchase at least 1,185 MW of energy 
from renewable energy projects under the North Carolina’s CPRE program. Two 
tranches of the CPRE process have been completed with contracts executed 

for winning proposals. Five Duke Energy projects, totaling about 190 MW, 
were selected during the first tranche and none were selected during the 
second tranche. Two of the Duke Energy winning projects achieved commercial 
operation in December 2020 and the remaining three will be online by the third 
quarter 2021. The need for a third tranche of CPRE will be determined prior to 
November 2021.

In various states, legislation is being considered to allow third-party sales 

of electricity. Deregulation or restructuring in the electric industry may result 
in increased competition and unrecovered costs. The Duke Energy Registrants 
cannot predict the outcome of these initiatives.

New Accounting Standards

See Note 1 to the Consolidated Financial Statements, “Summary 

of Significant Accounting Policies,” for a discussion of the impact of new 
accounting standards.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See “Management’s Discussion and Analysis of Results of Operations and Financial Condition – Quantitative and Qualitative Disclosures About Market Risk.”

56

PART IIITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Duke Energy
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations .....................................................................
Consolidated Statements of Comprehensive Income ..................................................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows  ...................................................................
Consolidated Statements of Changes in Equity...........................................................

Duke Energy Carolinas
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations and Comprehensive Income ..........................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows ....................................................................
Consolidated Statements of Changes in Equity...........................................................

Progress Energy
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations and Comprehensive Income ..........................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows ....................................................................
Consolidated Statements of Changes in Equity...........................................................

Duke Energy Progress
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations and Comprehensive Income ..........................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows ....................................................................
Consolidated Statements of Changes in Equity...........................................................

Duke Energy Florida
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations and Comprehensive Income ..........................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows ....................................................................
Consolidated Statements of Changes in Equity...........................................................

Duke Energy Ohio
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations and Comprehensive Income ..........................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows ....................................................................
Consolidated Statements of Changes in Equity...........................................................

58
60
61
62
64
66

67
69
70
71
72

73
75
76
77
78

79
81
82
83
84

85
87
88
89
90

91
93
94
95
96

Duke Energy Indiana
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations and Comprehensive Income ..........................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows ....................................................................
Consolidated Statements of Changes in Equity...........................................................

Piedmont
Report of Independent Registered Public Accounting Firm ..........................................
Consolidated Statements of Operations and Comprehensive Income ..........................
Consolidated Balance Sheets .....................................................................................
Consolidated Statements of Cash Flows ....................................................................
Consolidated Statements of Changes in Equity...........................................................

Combined Notes to Consolidated Financial Statements
Note 1 – Summary of Significant Accounting Policies .................................................
Note 2 – Business Segments .....................................................................................
Note 3 – Regulatory Matters ......................................................................................
Note 4 – Commitments and Contingencies ................................................................
Note 5 – Leases ........................................................................................................
Note 6 – Debt and Credit Facilities ............................................................................
Note 7 – Guarantees and Indemnifications ................................................................
Note 8 – Joint Ownership of Generating and Transmission Facilities...........................
Note 9 – Asset Retirement Obligations .......................................................................
Note 10 – Property, Plant and Equipment ..................................................................
Note 11 – Goodwill and Intangible Assets ..................................................................
Note 12 – Investments in Unconsolidated Affiliates ...................................................
Note 13 – Related Party Transactions ........................................................................
Note 14 – Derivatives and Hedging ............................................................................
Note 15 – Investments in Debt and Equity Securities .................................................
Note 16 – Fair Value Measurements ..........................................................................
Note 17 – Variable Interest Entities ............................................................................
Note 18 – Revenue ....................................................................................................
Note 19 – Stockholders' Equity ..................................................................................
Note 20 – Severance .................................................................................................
Note 21 – Stock-Based Compensation.......................................................................
Note 22 – Employee Benefit Plans .............................................................................
Note 23 – Income Taxes.............................................................................................
Note 24 – Other Income and Expenses, Net ...............................................................
Note 25 – Subsequent Events ....................................................................................

97
99
100
101
102

103
105
106
107
108

109
117
121
142
147
151
157
158
158
161
163
164
166
167
172
177
183
187
192
194
195
196
210
217
217

57

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the shareholders and the Board of Directors of  
Duke Energy Corporation 

Opinion on the Financial Statements 

We have audited the accompanying consolidated balance sheets of Duke Energy Corporation and subsidiaries (the “Company”) as of December 31, 2020 and 
2019, the related consolidated statements of operations, comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended 
December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in 
the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal 
control over financial reporting as of December 31, 2020, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee 
of Sponsoring Organizations of the Treadway Commission and our report dated February 25, 2021, expressed an unqualified opinion on the Company’s internal control 
over financial reporting.

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 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 audit to obtain reasonable 
assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. 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.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or 
required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1, 3, and 9 to the financial statements.

Critical Audit Matter Description

The Company is subject to regulation by federal and state utility regulatory agencies (the “Commissions”), which have jurisdiction with respect to the rates 

of the Company’s electric and natural gas distribution companies. Management has determined it meets the criteria for the application of regulated operations 
accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant judgment can be required 
to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in 
customer rates. As of December 31, 2020, the Company has approximately $14 billion recorded as regulatory assets.

The Company’s rates are subject to regulatory rate-setting processes and annual earnings oversight. Rates charged to customers are determined and approved 

in regulatory proceedings based on an analysis of the Company’s costs to provide utility service and a return on the Company’s investment in the utility business. 
Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment and the timing and amount of assets to be recovered by 
rates. The regulation of rates is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital. As discussed in Note 3, 
regulatory proceedings in recent years in North Carolina and South Carolina have focused on the recoverability of asset retirement obligations specific to coal ash. As 
a result, assessing the potential outcomes of future regulatory orders in North Carolina and South Carolina requires significant management judgment. 

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 

outcome of future decisions by the Commissions; to support its assertions on the likelihood of future recovery for deferred costs. As such, auditing these judgments 
required specialized knowledge of accounting for rate regulation due to its inherent complexities, a high degree of auditor judgment, and an increased extent of effort.

58

PART IIHow the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

• We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, 

for any evidence that might contradict management’s assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: 

 ◦ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.

 ◦ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 

approved regulatory orders, as applicable.

 ◦ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

 ◦ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding 

probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery.

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

/s/ Deloitte & Touche LLP

Charlotte, North Carolina
February 25, 2021 
We have served as the Company’s auditor since 1947.

59

PART IIDUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except per share amounts)

Operating Revenues
Regulated electric
Regulated natural gas
Nonregulated electric and other

Total operating revenues

Operating Expenses
Fuel used in electric generation and purchased power
Cost of natural gas
Operation, maintenance and other
Depreciation and amortization
Property and other taxes
Impairment charges

Total operating expenses

Gains (Losses) on Sales of Other Assets and Other, net

Operating Income

Other Income and Expenses
Equity in (losses) earnings of unconsolidated affiliates
Other income and expenses, net

Total other income and expenses

Interest Expense

Income From Continuing Operations Before Income Taxes
Income Tax (Benefit) Expense From Continuing Operations

Income From Continuing Operations
Income (Loss) From Discontinued Operations, net of tax

Net Income
Add: Net Loss Attributable to Noncontrolling Interests

Net Income Attributable to Duke Energy Corporation
Less: Preferred Dividends

Years Ended December 31,

2020

2019

2018

$ 21,461
1,642
765

$22,615
1,759
705

$22,097
1,773
651

23,868

25,079

24,521

6,051
460
5,788
4,705
1,337
984

6,826
627
6,066
4,548
1,307
(8)

6,831
697
6,463
4,074
1,280
402

19,325

19,366

19,747

10

4,553

(2,005)
453

(1,552)

2,162

839
(236)

1,075
7

1,082
295

1,377
107

(4)

5,709

162
430

592

2,204

4,097
519

3,578
(7)

3,571
177

3,748
41

(89)

4,685

83
399

482

2,094

3,073
448

2,625
19

2,644
22

2,666
—

Net Income Available to Duke Energy Corporation Common Stockholders

$ 1,270

$ 3,707

$ 2,666

Earnings Per Share – Basic and Diluted
Income from continuing operations available to Duke Energy Corporation common stockholders

Basic and Diluted

Income (Loss) from discontinued operations attributable to Duke Energy Corporation common stockholders

Basic and Diluted

Net income available to Duke Energy Corporation common stockholders

Basic and Diluted

Weighted average shares outstanding

Basic

Diluted

See Notes to Consolidated Financial Statements

$

$

$

1.71 

$

5.07 

0.01 

$ (0.01)

1.72 

$

5.06 

$

$

$

737 

738 

729 

729 

3.73 

0.03 

3.76 

708 

708 

60

PART IIDUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in millions)

Net Income 

Other Comprehensive (Loss) Income, net of tax(a)

Pension and OPEB adjustments
Net unrealized losses on cash flow hedges
Reclassification into earnings from cash flow hedges 
Unrealized gains (losses) on available-for-sale securities 

Other Comprehensive Loss, net of tax

Comprehensive Income
Add: Comprehensive Loss Attributable to Noncontrolling Interests

Comprehensive Income Attributable to Duke Energy Corporation
Less: Preferred Dividends

Years Ended December 31,

2020

2019

2018

$1,082 

$3,571 

$2,644 

6 
(138)
11 
3 

(118)

964 
306 

1,270 
107 

9 
(47)
6 
8 

(24)

3,547 
177 

3,724 
41 

(6)
(10)
6 
(3)

(13)

2,631 
22 

2,653 
— 

Comprehensive Income Available to Duke Energy Corporation Common Stockholders

$1,163 

$3,683 

$ 2,653 

(a)  Net of income tax impacts of approximately $35 million for the year ended December 31, 2020. Tax impacts are immaterial for other periods presented. 

See Notes to Consolidated Financial Statements

61

PART IIDUKE ENERGY CORPORATION
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS
Current Assets
Cash and cash equivalents
Receivables (net of allowance for doubtful accounts of $29 at 2020 and $22 at 2019)
Receivables of VIEs (net of allowance for doubtful accounts of $117 at 2020 and $54 at 2019)
Inventory
Regulatory assets (includes $53 at 2020 and $52 at 2019 related to VIEs)
Other (includes $296 at 2020 and $242 at 2019 related to VIEs)

Total current assets

Property, Plant and Equipment
Cost
Accumulated depreciation and amortization
Generation facilities to be retired, net

Net property, plant and equipment

Other Noncurrent Assets
Goodwill
Regulatory assets (includes $937 at 2020 and $989 at 2019 related to VIEs)
Nuclear decommissioning trust funds
Operating lease right-of-use assets, net
Investments in equity method unconsolidated affiliates
Other (includes $81 at 2020 and $110 at 2019 related to VIEs)

Total other noncurrent assets

Total Assets

See Notes to Consolidated Financial Statements

December 31,

2020

2019

$

259 
1,009 
2,144 
3,167 
1,641 
462 

8,682 

$

311 
1,066 
1,994 
3,232 
1,796 
764 

9,163 

155,580 
(48,827)
29 

147,654 
(45,773)
246 

106,782 

102,127 

19,303 
12,421 
9,114 
1,524 
961 
3,601 

46,924 

19,303 
13,222 
8,140 
1,658 
1,936 
3,289 

47,548 

$162,388 

$ 158,838 

62

PART IIDUKE ENERGY CORPORATION
CONSOLIDATED BALANCE SHEETS   – (Continued)

(in millions)

LIABILITIES AND EQUITY
Current Liabilities
Accounts payable
Notes payable and commercial paper
Taxes accrued
Interest accrued
Current maturities of long-term debt (includes $472 at 2020 and $216 at 2019 related to VIEs)
Asset retirement obligations
Regulatory liabilities
Other

Total current liabilities

Long-Term Debt (includes $3,535 at 2020 and $3,997 at 2019 related to VIEs)

Other Noncurrent Liabilities

Deferred income taxes
Asset retirement obligations
Regulatory liabilities
Operating lease liabilities
Accrued pension and other post-retirement benefit costs
Investment tax credits
Other (includes $316 at 2020 and $228 at 2019 related to VIEs)

Total other noncurrent liabilities

Commitments and Contingencies

Equity
Preferred stock, Series A, $0.001 par value, 40 million depositary shares authorized and outstanding at 2020 and 2019
Preferred stock, Series B, $0.001 par value, 1 million shares authorized and outstanding at 2020 and 2019
Common stock, $0.001 par value, 2 billion shares authorized; 769 million shares outstanding at 2020 and 733 million shares outstanding at 2019
Additional paid-in capital
Retained earnings
Accumulated other comprehensive loss

Total Duke Energy Corporation stockholders' equity

Noncontrolling interests

Total equity

Total Liabilities and Equity

See Notes to Consolidated Financial Statements

December 31,

2020

2019

$

3,144 
2,873 
482 
537 
4,238 
718 
1,377 

2,936 

16,305 

55,625 

9,244 
12,286 
15,029 
1,340 
969 
687 
1,719 

41,274 

973 
989 
1 
43,767 
2,471 
(237)

47,964 
1,220 

49,184 

$

3,487 
3,135 
392 
565 
3,141 
881 
784 

2,367 

14,752 

54,985 

8,878 
12,437 
15,264 
1,432 
934 
624 
1,581 

41,150 

973 
989 
1 
40,881 
4,108 
(130)

46,822 
1,129 

47,951 

$162,388 

$158,838 

63

PART IIDUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation, amortization and accretion (including amortization of nuclear fuel)
Equity in losses (earnings) of unconsolidated affiliates
Equity component of AFUDC
(Gains) Losses on sales of other assets
Impairment charges
Deferred income taxes
Payments for asset retirement obligations
Payment for the disposal of other assets
Provision for rate refunds
Refund of AMT credit carryforwards
(Increase) decrease in

Net realized and unrealized mark-to-market and hedging transactions
Receivables
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Contributions to equity method investments
Return of investment capital
Purchases of debt and equity securities
Proceeds from sales and maturities of debt and equity securities
Other

Net cash used in investing activities

Years Ended December 31,

2020

2019

2018

$ 1,082 

$ 3,571 

$ 2,644 

5,486 
2,005 
(154)
(10)
984 
54 
(610)
— 
(22)
572 

63 
(56)
66 
205 

(21)
117 
(65)
(398)
(442)

5,176 
(162)
(139)
4 
(8)
806 
(746)
— 
60 
573 

(48)
78 
(122)
10 

(164)
(224)
172 
(559)
(69)

8,856 

8,209 

(9,907)
(370)
133 
(8,011)
7,949 
(398)

(11,122)
(324)
11 
(3,348)
3,343 
(517)

4,696 
(83)
(221)
88 
402 
1,079 
(533)
(105)
425 
— 

22 
(345)
156 
(721)

479 
23 
270 
(1,062)
(28)

7,186 

(9,389)
(416)
137 
(3,762)
3,747 
(377)

See Notes to Consolidated Financial Statements

(10,604)

(11,957)

(10,060)

64

PART IIDUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS   – (Continued)

(in millions)

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the:

Issuance of long-term debt
Issuance of preferred stock
Issuance of common stock 

Payments for the redemption of long-term debt
Proceeds from the issuance of short-term debt with original maturities greater than 90 days
Payments for the redemption of short-term debt with original maturities greater than 90 days
Notes payable and commercial paper
Contributions from noncontrolling interests
Dividends paid
Other

Net cash provided by financing activities

Net (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

Supplemental Disclosures:
Cash paid for interest, net of amount capitalized
Cash received from income taxes
Significant non-cash transactions:
Accrued capital expenditures
Non-cash dividends

See Notes to Consolidated Financial Statements

Years Ended December 31,

2020

2019

2018

$ 6,330 
— 
2,745 
(4,506)
3,009 
(2,147)
(1,181)
426 
(2,812)
(133)

$ 7,091
1,962 
384 
(3,476)
397 
(479)
(298)
843 
(2,668)
(26)

$ 5,299 
— 
1,838 
(2,906)
472 
(282)
981 
41 
(2,471)
(12)

1,731 

3,730 

2,960 

(17)
573 

(18)
591 

$

556 

$

573 

$

86 
505 

591 

$ 2,186 
(585)

$ 2,195 
(651)

$ 2,086 
(266)

1,116 
110 

1,356 
108 

1,112 
107 

65

PART IIDUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

Duke Energy Corporation Stockholders’
Accumulated Other Comprehensive
Income (Loss)

(in millions)

Preferred
Stock

Common
Stock
Shares

Common
Stock

Additional
Paid-in
Capital

Retained
Earnings

Net
Losses on
Cash Flow
Hedges

Net Unrealized
Gains (Losses)
on Available-
for-Sale-
Securities

Total
Duke Energy
Corporation
Stockholders’
Equity

Pension and
OPEB 
Adjustments

Noncontrolling
Interests

Total
Equity

Balance at December 31, 2017 $ —

700  $

1

$ 38,792  $ 3,013 

$ (10)

$

12 

$

(69)

$ 41,739 

$

(2) $ 41,737 

Net income
Other comprehensive loss
Common stock issuances, 

including dividend reinvest-
ment and employee benefits 

Common stock dividends 
Distributions to noncontrolling 
interest in subsidiaries

Other(a)

—
—

—
—

—
—

— 
— 

27 
— 

— 
— 

—
—

—
—

—
—

— 
— 

2,666 
— 

2,003 
— 

— 
(2,578)

— 
— 

— 
12 

— 
(4)

— 
— 

— 
— 

Balance at December 31, 2018 $ —

727  $

1

$ 40,795  $ 3,113 

$ (14)

$

Net income
Other comprehensive (loss) 

Income

Preferred stock, Series A, 

issuances, net of issuance 
costs(b)

Preferred stock, Series B, issu-

— 

— 

973 

ances, net of issuance costs(b)

989 

Common stock issuances, 

including dividend reinvest-
ment and employee benefits 

Common stock dividends 
Sale of noncontrolling interest(c)
Contribution from noncontrolling 

interest(f)

Distributions to noncontrolling 
interest in subsidiaries

Other(d)

— 
— 
— 

— 

— 
— 

— 

— 

— 

— 

6 
— 
— 

— 

— 
— 

—

—

—

—

—
—
—

—

—
—

— 

3,707 

— 

— 

— 

— 

— 

— 

552 
— 
(466)

— 
(2,735)
— 

— 

— 
— 

— 

— 
23 

— 

(41)

— 

— 

— 
— 
10 

— 

— 
(6)

Balance at December 31, 2019 $ 1,962

733  $

1

$ 40,881  $ 4,108 

$ (51)

$

Net income 
Other comprehensive (loss) 

income

Common stock issuances, 

including dividend reinvest-
ment and employee benefits 

Common stock dividends 
Contribution from noncontrolling 
interest, net of transaction 
costs(f)

Distributions to noncontrolling 
interests in subsidiaries

Other(e)

—

—

—
—

—

—
—

— 

— 

36 
— 

— 

— 
— 

—

—

—
—

—

—
—

— 

1,270 

— 

— 

— 

(116)

2,902 
— 

— 
(2,815)

(17)

— 
1 

— 

— 
(92)

— 
— 

— 

— 
— 

— 
(3)

— 
— 

— 
(12)

(3)

— 

8 

— 

— 

— 
— 
— 

— 

— 
(2)

3 

— 

3 

— 
— 

— 

— 
— 

$

$

— 
(6)

— 
— 

— 
— 

(75)

— 

9 

— 

— 

— 
— 
— 

— 

— 
(16)

(82)

— 

6 

— 
— 

— 

— 
— 

2,666 
(13)

2,003 
(2,578)

— 
— 

(22)
— 

2,644 
(13)

— 
— 

(1)
42 

2,003 
(2,578)

(1)
42 

$ 43,817 

$

17  $ 43,834 

3,707 

(177)

3,530 

(24)

973 

989 

552 
(2,735)
(456)

— 

— 
(1)

— 

(24)

— 

— 

973 

989 

— 
— 
863 

552 
(2,735)
407 

428 

428 

(4)
2 

(4)
1 

$ 46,822 

$ 1,129  $ 47,951 

1,270 

(107)

2,902 
(2,815)

(17)

— 
(91)

(295)

975 

(11)

(118)

— 
— 

2,902 
(2,815)

426 

409 

(30)
1 

(30)
(90)

Balance at December 31, 2020 $ 1,962 

769  $

1

$ 43,767  $ 2,471 

$ (167)

$

6 

$

(76)

$ 47,964 

$ 1,220  $ 49,184 

(a)  Amounts in Retained Earnings and AOCI represent a cumulative-effect adjustment due to implementation of a new accounting standard related to Financial Instruments Classification and Measurement. See Note 1 for more 

information. Amount in Noncontrolling Interests primarily relates to tax equity financing activity in the Commercial Renewables segment. 

(b)   Duke Energy issued 40 million depositary shares of preferred stock, Series A, in the first quarter of 2019 and 1 million shares of preferred stock, Series B, in the third quarter of 2019.
(c)  See Note 1 for additional discussion of the transaction.
(d)  Amounts in Retained Earnings and AOCI primarily represent impacts to accumulated other comprehensive income due to implementation of a new accounting standard related to Reclassification of Certain Tax Effects from 

Accumulated Other Comprehensive Income.

(e)   Amounts in Retained earnings primarily represent impacts due to implementation of a new accounting standard related to Current Estimated Credit Losses. See Note 1 for additional discussion.
(f)  Relates to tax equity financing activity in the Commercial Renewables segment. 

See Notes to Consolidated Financial Statements

66

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of  
Duke Energy Carolinas, LLC

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Duke Energy Carolinas, LLC and subsidiaries (the “Company”) as of December 31, 2020 

and 2019, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period 
ended December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the three 
years in the period ended December 31, 2020, 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 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.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or 
required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1, 3, and 9 to the financial statements.

Critical Audit Matter Description

The Company is subject to rate regulation by the North Carolina Utilities Commission and by the South Carolina Public Service Commission (collectively the 
“Commissions”), which have jurisdiction with respect to the electric rates of the Company. Management has determined it meets the criteria for the application of 
regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant 
judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are 
probable of future recovery in customer rates. As of December 31, 2020, the Company has approximately $3.5 billion recorded as regulatory assets.

The Company’s rates are subject to regulatory rate-setting processes and annual earnings oversight. Rates charged to customers are determined and approved 

in regulatory proceedings based on an analysis of the Company’s costs to provide utility service and a return on the Company’s investment in the utility business. 
Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment and the timing and amount of assets to be recovered by 
rates. The regulation of rates is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital. As discussed in Note 3, 
regulatory proceedings in recent years in North Carolina and South Carolina have focused on the recoverability of asset retirement obligations specific to coal ash. As 
a result, assessing the potential outcomes of future regulatory orders in North Carolina and South Carolina requires significant management judgment.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 

outcome of future decisions by the Commissions; to support its assertions on the likelihood of future recovery for deferred costs. As such, auditing these judgments 
required specialized knowledge of accounting for rate regulation due to its inherent complexities, a high degree of auditor judgment, and an increased extent of effort.

67

PART IIHow the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

• We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, 

for any evidence that might contradict management’s assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: 

˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.

˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 
approved regulatory orders, as applicable.

˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding 

probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery. 

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

/s/ Deloitte & Touche LLP

Charlotte, North Carolina 
February 25, 2021  
We have served as the Company’s auditor since 1947.

68

PART IIDUKE ENERGY CAROLINAS, LLC
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(in millions)

Operating Revenues

Operating Expenses
Fuel used in electric generation and purchased power
Operation, maintenance and other
Depreciation and amortization
Property and other taxes
Impairment charges

Total operating expenses

Gains (Losses) on Sales of Other Assets and Other, net

Operating Income
Other Income and Expenses, net
Interest Expense

Income Before Income Taxes
Income Tax Expense

Net Income

Other Comprehensive Income, net of tax
Reclassification into earnings from cash flow hedges

Other Comprehensive Income, net of tax

Comprehensive Income

Years Ended December 31,

2020

2019

2018

$ 7,015 

$ 7,395 

$ 7,300 

1,682 
1,743 
1,462 
299 
476 

5,662 

1 

1,354 
177 
487 

1,044 
88 

1,804 
1,868 
1,388 
292 
17 

5,369 

— 

2,026 
151 
463 

1,714 
311 

1,821 
2,130 
1,201 
295 
192 

5,639 

(1)

1,660 
153 
439 

1,374 
303 

$ 956 

$ 1,403 

$ 1,071 

— 

— 

— 

— 

1 

1 

$ 956 

$ 1,403 

$ 1,072 

See Notes to Consolidated Financial Statements

69

PART II 
 
 
 
 
 
DUKE ENERGY CAROLINAS, LLC
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS
Current Assets
Cash and cash equivalents
Receivables (net of allowance for doubtful accounts of $1 at 2020 and $3 at 2019)
Receivables of VIEs (net of allowance for doubtful accounts of $22 at 2020 and $7 at 2019)
Receivables from affiliated companies
Inventory
Regulatory assets
Other

Total current assets

Property, Plant and Equipment
Cost
Accumulated depreciation and amortization

Net property, plant and equipment

Other Noncurrent Assets
Regulatory assets
Nuclear decommissioning trust funds
Operating lease right-of-use assets, net
Other

Total other noncurrent assets

Total Assets

LIABILITIES AND EQUITY
Current Liabilities
Accounts payable
Accounts payable to affiliated companies
Notes payable to affiliated companies
Taxes accrued
Interest accrued
Current maturities of long-term debt
Asset retirement obligations
Regulatory liabilities
Other

Total current liabilities

Long-Term Debt

Long-Term Debt Payable to Affiliated Companies

Other Noncurrent Liabilities
Deferred income taxes
Asset retirement obligations
Regulatory liabilities
Operating lease liabilities
Accrued pension and other post-retirement benefit costs
Investment tax credits
Other

Total other noncurrent liabilities

Commitments and Contingencies

Equity
Member's equity
Accumulated other comprehensive loss

Total equity

Total Liabilities and Equity

See Notes to Consolidated Financial Statements

70

December 31,

2020

2019

$

21 
247 
696 
124 
1,010 
473 
20 

2,591 

$

18 
324 
642 
114 
996 
550 
21 

2,665 

50,640 
(17,453)

48,922 
(16,525)

33,187 

32,397 

2,996 
4,977 
110 
1,187 

9,270 

3,360 
4,359 
123 
1,149 

8,991 

$ 45,048 

$ 44,053 

$ 1,000 
199 
506 
76 
117 
506 
264 
473 
546 

3,687 

11,412 

300 

3,842 
5,086 
6,535 
97 
73 
236 
626 

$

954 
210 
29 
46 
115 
458 
206 
255 
611 

2,884 

11,142 

300 

3,921 
5,528 
6,423 
102 
84 
231 
627 

16,495 

16,916 

13,161 
(7)

13,154 

12,818 
(7)

12,811 

$ 45,048 

$ 44,053 

PART II 
 
 
 
 
 
 
 
DUKE ENERGY CAROLINAS, LLC
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization (including amortization of nuclear fuel)
Equity component of AFUDC
(Gains) Losses on sales of other assets 
Impairment charges
Deferred income taxes
Payments for asset retirement obligations
Provision for rate refunds
(Increase) decrease in

Net realized and unrealized mark-to-market and hedging transactions
Receivables
Receivables from affiliated companies
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Accounts payable to affiliated companies
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Purchases of debt and equity securities
Proceeds from sales and maturities of debt and equity securities
Other

Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt
Payments for the redemption of long-term debt
Notes payable to affiliated companies
Distributions to parent
Other

Net cash provided by financing activities

Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Supplemental Disclosures:
Cash paid for interest, net of amount capitalized
Cash paid for income taxes
Significant non-cash transactions:
Accrued capital expenditures

See Notes to Consolidated Financial Statements

71

Years Ended December 31,

2020

2019

2018

$

956 

$ 1,403 

$ 1,071 

1,731 
(62)
(1)
476 
(260)
(162)
(5)

(4)
52 
(10)
(14)
209 

55 
(11)
30 
(56)
(101)
(47)

1,671 
(42)
— 
17 
133 
(278)
36 

(8)
(21)
68 
(48)
(73)

(50)
(20)
(127)
127 
(42)
(37)

1,487 
(73)
1
192 
305 
(230)
182 

2 
(86)
(87)
25 
(161)

168 
21
(65)
89 
(221)
(90)

2,776 

2,709 

2,530 

(2,669)
(1,602)
1,602 
(164)

(2,833)

(2,714)
(1,658)
1,658 
(204)

(2,918)

998 
(813)
477 
(600)
(2)

60 

3 
18 

21 

481 
321 

365 

$

$

886 
(6)
(410)
(275)
(1)

194 

(15)
33 

18 

433 
122 

347 

$

$

(2,706)
(1,810)
1,810 
(147)

(2,853)

1,983 
(1,205)
335 
(750)
(23)

340 

17 
16 

33 

452 
89 

302 

$

$

PART IIDUKE ENERGY CAROLINAS, LLC
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions)

Balance at December 31, 2017

Net income 
Other comprehensive income 

Distributions to parent 

Balance at December 31, 2018

Net income 
Distributions to parent 
Other

Balance at December 31, 2019

Net income
Distributions to parent
Other(a)

Balance at December 31, 2020

(a)  Amounts primarily represent impacts due to implementation of a new accounting standard related to Credit Losses. See Note 1 for additional discussion.

See Notes to Consolidated Financial Statements

Accumulated Other
Comprehensive
Loss

Net Gains
(Losses) on
Cash Flow
Hedges

Total
Equity

$

(7)

$11,361 

— 
1 

— 

1,071 
1 

(750)

$

(6)

$11,683 

— 
— 
(1)

1,403 
(275)
— 

$

(7)

$12,811 

— 
— 
— 

956 
(600)
(13)

Member’s
Equity

$11,368 

1,071 
— 

(750)

$11,689 

1,403 
(275)
1 

$12,818 

956 
(600)
(13)

$13,161 

$

(7)

$13,154 

72

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of  
Directors of Progress Energy, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Progress Energy, Inc. and subsidiaries (the “Company”) as of December 31, 2020 and 2019, 

the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period ended 
December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in 
the period ended December 31, 2020, 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 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.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or 
required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1, 3, and 9 to the financial statements.

Critical Audit Matter Description

The Company is subject to rate regulation by the North Carolina Utilities Commission, South Carolina Public Service Commission and Florida Public Service 
Commission (collectively the “Commissions”), which have jurisdiction with respect to the electric rates of the Company. Management has determined it meets the 
criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of 
America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because 
such costs are probable of future recovery in customer rates. As of December 31, 2020, the Company has approximately $6.5 billion recorded as regulatory assets.

The Company’s rates are subject to regulatory rate-setting processes and annual earnings oversight. Rates charged to customers are determined and approved 

in regulatory proceedings based on an analysis of the Company’s costs to provide utility service and a return on the Company’s investment in the utility business. 
Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment and the timing and amount of assets to be recovered by 
rates. The regulation of rates is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital. As discussed in Note 3, 
regulatory proceedings in recent years in North Carolina and South Carolina have focused on the recoverability of asset retirement obligations specific to coal ash. As 
a result, assessing the potential outcomes of future regulatory orders in North Carolina and South Carolina requires significant management judgment.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 

outcome of future decisions by the Commissions; to support its assertions on the likelihood of future recovery for deferred costs. As such, auditing these judgments 
required specialized knowledge of accounting for rate regulation due to its inherent complexities, a high degree of auditor judgment, and an increased extent of effort.

73

PART IIHow the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

• We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, 

for any evidence that might contradict management’s assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: 

˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.

˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 
approved regulatory orders, as applicable.

˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding 

probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery. 

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

/s/ Deloitte & Touche LLP

Charlotte, North Carolina 
February 25, 2021  
We have served as the Company’s auditor since 1930.

74

PART IIPROGRESS ENERGY, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(in millions)

Operating Revenues 
Operating Expenses 
Fuel used in electric generation and purchased power 
Operation, maintenance and other 
Depreciation and amortization 
Property and other taxes 
Impairment charges 

Total operating expenses

Gains on Sales of Other Assets and Other, net 

Operating Income 
Other Income and Expenses, net 
Interest Expense 

Income Before Income Taxes 
Income Tax Expense

Net Income 
Less: Net Income Attributable to Noncontrolling Interests 

Net Income Attributable to Parent 

Net Income

Other Comprehensive Income, net of tax
Pension and OPEB adjustments
Net unrealized gain on cash flow hedges
Unrealized (losses) gains on available-for-sale securities 

Other Comprehensive Income, net of tax

Comprehensive Income
Less: Comprehensive Income Attributable to Noncontrolling Interests

Comprehensive Income Attributable to Parent

See Notes to Consolidated Financial Statements

Years Ended December 31,

2020

2019

2018

$10,627 

$11,202 

$10,728 

3,479 
2,479 
1,818 
545 
495 

8,816 

9 

1,820 
129 
790 

1,159 
113 

1,046 
1 

4,024 
2,495 
1,845 
561 
(24)

8,901 

— 

2,301 
141 
862 

1,580 
253 

1,327 
— 

3,976 
2,613 
1,619 
529 
87 

8,824 

24 

1,928 
165 
842 

1,251 
218 

1,033 
6 

$ 1,045 

$ 1,327 

$ 1,027 

$ 1,046 

$ 1,327 

$ 1,033 

(1)
5 
(1)

3 

2 
5 
1 

8 

1,049 
1 

1,335 
— 

5 
6 
(1)

10 

1,043 
6 

$ 1,048 

$ 1,335 

$ 1,037 

75

PART II 
 
 
 
 
 
PROGRESS ENERGY, INC.
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS
Current Assets
Cash and cash equivalents
Receivables (net of allowance for doubtful accounts of $8 at 2020 and $7 at 2019)
Receivables of VIEs (net of allowance for doubtful accounts of $29 at 2020 and $9 at 2019)
Receivables from affiliated companies
Notes receivable from affiliated companies
Inventory
Regulatory assets (includes $53 at 2020 and $52 at 2019 related to VIEs)
Other (includes $39 at 2020 and 2019 related to VIEs)

Total current assets

Property, Plant and Equipment
Cost
Accumulated depreciation and amortization
Generation facilities to be retired, net

Net property, plant and equipment

Other Noncurrent Assets
Goodwill
Regulatory assets (includes $937 at 2020 and $989 at 2019 related to VIEs)
Nuclear decommissioning trust funds
Operating lease right-of-use assets, net
Other

Total other noncurrent assets

Total Assets

LIABILITIES AND EQUITY
Current Liabilities
Accounts payable
Accounts payable to affiliated companies
Notes payable to affiliated companies
Taxes accrued
Interest accrued
Current maturities of long-term debt (includes $305 at 2020 and $54 at 2019 related to VIEs)
Asset retirement obligations
Regulatory liabilities
Other

Total current liabilities

Long-Term Debt (includes $1,252 at 2020 and $1,632 at 2019 related to VIEs)

Long-Term Debt Payable to Affiliated Companies

Other Noncurrent Liabilities
Deferred income taxes
Asset retirement obligations
Regulatory liabilities
Operating lease liabilities
Accrued pension and other post-retirement benefit costs
Other

Total other noncurrent liabilities

Commitments and Contingencies
Equity
Common stock, $0.01 par value, 100 shares authorized and outstanding at 2020 and 2019
Additional paid-in capital
Retained earnings
Accumulated other comprehensive loss

Total Progress Energy, Inc. stockholder's equity

Noncontrolling interests

Total equity

Total Liabilities and Equity

See Notes to Consolidated Financial Statements

76

December 31,

2020

2019

$

59 
228 
901 
157 
— 
1,375 
758 
109 

3,587 

57,892 
(18,368)
29 

39,553 

3,655 
5,775 
4,137 
690 
1,227 

$

48 
220 
830 
76 
164 
1,423 
946 
210 

3,917 

55,070 
(17,159)
246 

38,157 

3,655 
6,346 
3,782 
788 
1,049 

15,484 

15,620 

$ 58,624 

$ 57,694 

$

919 
289 
2,969 
121 
202 
1,426 
283 
640 
793 

7,642 

17,688 

150 

4,396 
5,866 
5,051 
623 
505 
462 

$

1,104 
310 
1,821 
46 
228 
1,577 
485 
330 
902 

6,803 

17,907 

150 

4,462 
5,986 
5,225 
697 
488 
383 

16,903 

17,241 

— 
9,143 
7,109 
(15)

— 
9,143 
6,465 
(18)

16,237 

15,590 

4 

3 

16,241 

15,593 

$ 58,624 

$ 57,694 

PART II 
 
 
 
 
 
 
 
 
 
 
 
PROGRESS ENERGY, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation, amortization and accretion (including amortization of nuclear fuel)
Equity component of AFUDC
Gains on sales of other assets 
Impairment charges
Deferred income taxes
Payments for asset retirement obligations
Provision for rate refunds
(Increase) decrease in

Net realized and unrealized mark-to-market and hedging transactions
Receivables
Receivables from affiliated companies
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Accounts payable to affiliated companies
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Purchases of debt and equity securities
Proceeds from sales and maturities of debt and equity securities
Notes receivable from affiliated companies
Other

Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt
Payments for the redemption of long-term debt
Notes payable to affiliated companies
Dividends to parent
Other

Net cash provided by financing activities

Net 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

Supplemental Disclosures:
Cash paid for interest, net of amount capitalized
Cash paid for (received from) income taxes
Significant non-cash transactions:
Accrued capital expenditures

See Notes to Consolidated Financial Statements

77

Years Ended December 31,

2020

2019

2018

$ 1,046 

$ 1,327 

$ 1,033 

2,327 
(42)
(9)
495 
(197)
(384)
2 

(9)
(69)
(81)
49 
223 

(62)
(21)
75 
139 
(128)
(177)

2,207 
(66)
— 
(24)
433 
(412)
15 

(34)
47
81 
62 
184 

(4)
(50)
(74)
25 
(341)
(167)

1,987 
(104)
(24)
87 
358 
(230)
122 

18 
(207)
(137)
121 
(12)

217 
109 
8 
129 
(896)
(35)

3,177 

3,209 

2,544 

(3,488)
(5,998)
6,010 
164 
(160)

(3,472)

1,791 
(2,157)
1,148 
(400)
(13)

369 

74 
126 

200 

819 
149 

363 

$

$

(3,952)
(1,511)
1,504 
(164)
(190)

(4,313)

2,187 
(1,667)
586 
— 
12 

1,118 

14 
112 

126 

892 
(79)

447 

$

$

(3,854)
(1,753)
1,769 
240 
(162)

(3,760)

1,833 
(771)
430 
(250)
(1)

1,241 

25 
87 

112 

798 
(348)

478

$

$

PART II 
 
 
 
 
 
 
 
 
 
 
 
PROGRESS ENERGY, INC.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions)

Accumulated Other Comprehensive Income (Loss)

Additional
Paid-in
Capital

Retained
Earnings

Net Gains
(Losses) on
Cash Flow
Hedges

Net Unrealized
Gains (Losses)
on Available-for-
Sale Securities

Pension and
OPEB
Adjustments

Total Progress
Energy, Inc.
Stockholder’s
Equity

Noncontrolling
Interests

Total
Equity

Balance at December 31, 2017

$ 9,143 

$ 4,350 

$

(18)

$

5 

$ (12)

$ 13,468 

$ (3)

$ 13,465 

Net income
Other comprehensive income (loss)
Distributions to noncontrolling interests
Dividends to parent
Other(a)

— 
— 
— 
— 
— 

1,027 
— 
— 
(250)
4 

Balance at December 31, 2018

$ 9,143 

$ 5,131 

$

Net income
Other comprehensive income
Other(b)

— 

— 
— 

1,327 

— 
7 

— 
6 
— 
— 
— 

(12)

— 

5 
(3)

Net income 
Other comprehensive income (loss)
Dividends to parent
Other

— 
— 
— 
— 

1,045 
— 
(400)
(1)

Balance at December 31, 2020

$ 9,143 

$ 7,109 

$

— 
5 
— 
— 

(5)

— 
(1)
— 
— 
(5)

— 
5 
— 
— 
— 

$ (1)

$

(7)

— 

1 
(1)

— 
(1)
— 
— 

— 

2 
(2)

(7)

— 
(1)
— 
— 

1,027 
10 
— 
(250)
(1)

$ 14,254 

1,327 

8 
1 

6 
— 
(1)
— 
1 

1,033 
10 
(1)
(250)
— 

$

3 

$ 14,257 

— 

— 
— 

1,327 

8 
1 

$ 15,590 

$

3 

$ 15,593 

1,045 
3 
(400)
(1)

1 
— 
— 
— 

1,046 
3 
(400)
(1)

$ (2)

$

(8)

$ 16,237 

$

4 

$ 16,241 

Balance at December 31, 2019

$ 9,143 

$ 6,465 

$

(10)

$ (1)

$

(a)  Amounts in Retained Earnings and AOCI represent a cumulative-effect adjustment due to implementation of a new accounting standard related to Financial Instruments Classification and Measurement. See Note 1 for more 

information.

(b)  Amounts in Retained Earnings and AOCI primarily represent impacts to accumulated other comprehensive income due to implementation of a new accounting standard related to Reclassification of Certain Tax Effects from 

Accumulated Other Comprehensive Income.

See Notes to Consolidated Financial Statements

78

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of  
Directors of Duke Energy Progress, LLC

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Duke Energy Progress, LLC and subsidiaries (the “Company”) as of December 31, 2020 

and 2019, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period 
ended December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the three 
years in the period ended December 31, 2020, 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 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.

Critical Audit Matter 

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or 
required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1, 3, and 9 to the financial statements.

Critical Audit Matter Description

The Company is subject to rate regulation by the North Carolina Utilities Commission and by the South Carolina Public Service Commission (collectively the 
“Commissions”), which have jurisdiction with respect to the electric rates of the Company. Management has determined it meets the criteria for the application of 
regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant 
judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are 
probable of future recovery in customer rates. As of December 31, 2020, the Company has approximately $4.5 billion recorded as regulatory assets. 

The Company’s rates are subject to regulatory rate-setting processes and annual earnings oversight. Rates charged to customers are determined and approved 

in regulatory proceedings based on an analysis of the Company’s costs to provide utility service and a return on the Company’s investment in the utility business. 
Regulatory decisions can have an impact on the recovery of costs, the rate of return earned on investment and the timing and amount of assets to be recovered by rates. 
The regulation of rates is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital. As discussed in Note 3, regulatory 
proceedings in recent years in North Carolina and South Carolina have focused on the recoverability of asset retirement obligations specific to coal ash. As a result, 
assessing the potential outcomes of future regulatory orders in North Carolina and South Carolina requires significant management judgment. 

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 

outcome of future decisions by the Commissions; to support its assertions on the likelihood of future recovery for deferred costs. As such, auditing these judgments 
required specialized knowledge of accounting for rate regulation due to its inherent complexities, a high degree of auditor judgment, and an increased extent of effort.

79

PART IIHow the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

• We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, 

for any evidence that might contradict management’s assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following:

˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.

˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 
approved regulatory orders, as applicable.

˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained an analysis from management and letters from internal legal counsel for asset retirement obligations specific to coal ash costs, regarding 

probability of recovery for deferred costs not yet addressed in a regulatory order to assess management’s assertion that amounts are probable of recovery.

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

/s/ Deloitte & Touche LLP

Charlotte, North Carolina 
February 25, 2021  
We have served as the Company’s auditor since 1930.

80

PART IIDUKE ENERGY PROGRESS, LLC
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(in millions)

Operating Revenues 

Operating Expenses 
Fuel used in electric generation and purchased power 
Operation, maintenance and other 
Depreciation and amortization 
Property and other taxes 
Impairment charges 

Total operating expenses

Gains on Sales of Other Assets and Other, net 

Operating Income 
Other Income and Expenses, net 
Interest Expense 

Income Before Income Taxes 
Income Tax (Benefit) Expense 

Net Income and Comprehensive Income

See Notes to Consolidated Financial Statements

Years Ended December 31,

2020

2019

2018

$ 5,422 

$ 5,957 

$5,699 

1,743 
1,332 
1,116 
167 
499 

4,857 

8 

573 
75 
269 

379 
(36)

2,012 
1,446 
1,143 
176 
12 

4,789 

— 

1,168 
100 
306 

962 
157 

1,892 
1,578 
991 
155 
33 

4,649 

9 

1,059 
87 
319 

827 
160 

$ 415 

$

805 

$ 667 

81

PART II 
 
 
DUKE ENERGY PROGRESS, LLC
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS
Current Assets
Cash and cash equivalents
Receivables (net of allowance for doubtful accounts of $4 at 2020 and $3 at 2019)
Receivables of VIEs (net of allowance for doubtful accounts of $19 at 2020 and $5 at 2019)
Receivables from affiliated companies
Inventory
Regulatory assets
Other

Total current assets

Property, Plant and Equipment
Cost
Accumulated depreciation and amortization
Generation facilities to be retired, net

Net property, plant and equipment

Other Noncurrent Assets
Regulatory assets
Nuclear decommissioning trust funds
Operating lease right-of-use assets, net
Other

Total other noncurrent assets

Total Assets

LIABILITIES AND EQUITY
Current Liabilities
Accounts payable
Accounts payable to affiliated companies
Notes payable to affiliated companies
Taxes accrued
Interest accrued
Current maturities of long-term debt
Asset retirement obligations
Regulatory liabilities
Other

Total current liabilities

Long-Term Debt

Long-Term Debt Payable to Affiliated Companies

Other Noncurrent Liabilities
Deferred income taxes
Asset retirement obligations
Regulatory liabilities
Operating lease liabilities
Accrued pension and other post-retirement benefit costs
Investment tax credits
Other

Total other noncurrent liabilities

Commitments and Contingencies

Equity
Member's Equity

Total Liabilities and Equity

See Notes to Consolidated Financial Statements

82

December 31,

2020

2019

$

39 
132 
500 
50 
911 
492 
60 

$

22 
123 
489 
52 
934 
526 
60 

2,184 

2,206 

35,759 
(12,801)
29 

34,603 
(11,915)
246 

22,987 

22,934 

3,976 
3,500 
346 
740 

8,562 

4,152 
3,047 
387 
651 

8,237 

$33,733 

$33,377 

$

454 
215 
295 
85 
99 
603 
283 
530 
411 

2,975 

8,505 

150 

2,298 
5,352 
4,394 
323 
242 
132 
102 

$

629 
203 
66 
17 
110 
1,006 
485 
236 
478 

3,230 

7,902 

150 

2,388 
5,408 
4,232 
354 
238 
137 
92 

12,843 

12,849 

9,260 

9,246 

$33,733 

$33,377 

PART IIDUKE ENERGY PROGRESS, LLC
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization (including amortization of nuclear fuel)
Equity component of AFUDC
Gains on sales of other assets
Impairment charges
Deferred income taxes
Payments for asset retirement obligations
Provisions for rate refunds
(Increase) decrease in

Net realized and unrealized mark-to-market and hedging transactions
Receivables
Receivables from affiliated companies
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Accounts payable to affiliated companies
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Purchases of debt and equity securities
Proceeds from sales and maturities of debt and equity securities
Other

Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt
Payments for the redemption of long-term debt
Notes payable to affiliated companies
Distributions to parent
Other

Net cash provided by financing activities

Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Supplemental Disclosures:
Cash paid for interest, net of amount capitalized
Cash paid for (received from) income taxes
Significant non-cash transactions:
Accrued capital expenditures

See Notes to Consolidated Financial Statements

83

Years Ended December 31,

2020

2019

2018

$

415 

$

805 

$

667 

1,299 
(29)
(8)
499 
(234)
(304)
2 

1 
(4)
2 
23 
98 

(127)
12 
68 
157 
(207)
3 

1,329 
(60)
— 
12 
197 
(390)
12 

(6)
21 
(29)
20 
101 

32 
(75)
(46)
68 
(205)
37 

1,183 
(57)
(9)
33 
236 
(195)
122 

5 
(107)
(20)
63 
(201)

219 
99 
(11)
46 
(465)
20 

1,666 

1,823 

1,628 

(1,581)
(1,555)
1,516 
(57)

(1,677)

1,296 
(1,085)
229 
(400)
(12)

28 

17 
22 

39 

301 
123 

149 

$

$

(2,108)
(842)
810 
(119)

(2,259)

1,269 
(605)
(228)
— 
(1)

435 

(1)
23 

22 

331 
(30)

175 

$

$

(2,220)
(1,236)
1,206 
(95)

(2,345)

845 
(3)
54 
(175)
(1)

720 

3 
20 

23 

303 
(112)

220 

$

$

PART II 
 
 
 
 
 
 
 
 
DUKE ENERGY PROGRESS, LLC
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions) 

Balance at December 31, 2017

Net income 
Distribution to parent

Balance at December 31, 2018

Net income 

Balance at December 31, 2019

Net income 
Distribution to parent
Other

Balance at December 31, 2020

See Notes to Consolidated Financial Statements

Member’s
Equity

$ 7,949 

667 
(175)

$ 8,441 

805 

$ 9,246 

415 

(400)
(1)

$ 9,260 

84

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of  
Duke Energy Florida, LLC

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Duke Energy Florida, LLC and subsidiaries (the “Company”) as of December 31, 2020 and 

2019, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period 
ended December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the three 
years in the period ended December 31, 2020, 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 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.

Critical Audit Matter 

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or 
required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1 and 3 to the financial statements.

Critical Audit Matter Description

The Company is subject to rate regulation by the Florida Public Service Commission (the “Commission”), which has jurisdiction with respect to the electric rates 

of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements under 
accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred costs 
qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As of December 31, 2020, the Company 
has approximately $2.1 billion recorded as regulatory assets. 

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 

outcome of future decisions by the Commission; to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting 
judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these judgments required specialized knowledge of accounting 
for rate regulation and the ratemaking process due to its inherent complexities.

85

PART IIHow the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

• We read relevant regulatory orders issued by the Commission, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commission’s treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commission, including the settlement agreement filed with 
the Commission subsequent to December 31, 2020, that may impact the Company’s future rates, for any evidence that might contradict management’s 
assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following:

˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.
˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 
approved regulatory orders, as applicable.

˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

/s/ Deloitte & Touche LLP

Charlotte, North Carolina 
February 25, 2021  
We have served as the Company’s auditor since 2001.

86

PART IIDUKE ENERGY FLORIDA, LLC
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(in millions)

Operating Revenues 

Operating Expenses 
Fuel used in electric generation and purchased power 
Operation, maintenance and other 
Depreciation and amortization 
Property and other taxes 
Impairment charges 

Total operating expenses

Gains on Sales of Other Assets and Other, net 

Operating Income 
Other Income and Expenses, net 
Interest Expense 

Income Before Income Taxes 
Income Tax Expense 

Net Income 

Other Comprehensive Income (Loss), net of tax 
Unrealized (losses) gains on available-for-sale securities

Other Comprehensive (Loss) Income, net of tax 

Comprehensive Income 

Years Ended December 31,

2020

2019

2018

$ 5,188 

$ 5,231 

$ 5,021 

1,737 
1,131 
702 
381 
(4)

2,012 
1,034 
702 
392 
(36)

3,947 

4,104 

1 

1,242 
53 
326 

969 
198 

— 

1,127 
48 
328 

847 
155 

2,085 
1,025 
628 
374 
54 

4,166 

1 

856 
86 
287 

655 
101 

$

771 

$

692 

$

554 

(1)

(1)

1 

1 

(1)

(1)

$

770 

$

693 

$

553 

See Notes to Consolidated Financial Statements

87

PART II 
 
 
 
 
 
DUKE ENERGY FLORIDA, LLC
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS 
Current Assets 
Cash and cash equivalents 
Receivables (net of allowance for doubtful accounts of $4 at 2020 and $3 at 2019)
Receivables of VIEs (net of allowance for doubtful accounts of $10 at 2020 and $4 at 2019)
Receivables from affiliated companies 
Notes receivable from affiliated companies 
Inventory 
Regulatory assets (includes $53 at 2020 and $52 at 2019 related to VIEs)
Other (includes $39 at 2020 and 2019 related to VIEs)

Total current assets 

Property, Plant and Equipment 
Cost 
Accumulated depreciation and amortization 

Net property, plant and equipment 

Other Noncurrent Assets
Regulatory assets (includes $937 at 2020 and $989 at 2019 related to VIEs)
Nuclear decommissioning trust funds 
Operating lease right-of-use assets, net
Other 

Total other noncurrent assets

Total Assets 

LIABILITIES AND EQUITY 
Current Liabilities 
Accounts payable 
Accounts payable to affiliated companies 
Notes payable to affiliated companies 
Taxes accrued 
Interest accrued 
Current maturities of long-term debt (includes $305 at 2020 and $54 at 2019 related to VIEs)
Regulatory liabilities 
Other 

Total current liabilities 

Long-Term Debt (includes $1,002 at 2020 and $1,307 at 2019 related to VIEs)

Other Noncurrent Liabilities
Deferred income taxes 
Asset retirement obligations 
Regulatory liabilities 
Operating lease liabilities
Accrued pension and other post-retirement benefit costs 
Other 

Total other noncurrent liabilities 

Commitments and Contingencies 

Equity 
Member's equity
Accumulated other comprehensive loss

Total equity 

Total Liabilities and Equity 

See Notes to Consolidated Financial Statements

88

December 31,

2020

2019

$

11 
94 
401 
3 
— 
464 
265 
41 

$

17 
96 
341 
— 
173 
489 
419 
58 

1,279 

1,593 

22,123 
(5,560)

16,563 

1,799 
637 
344 
335 

3,115 

20,457 
(5,236)

15,221 

2,194 
734 
401 
311 

3,640 

$ 20,957 

$ 20,454 

$

465 
85 
196 
82 
69 
823 
110 
374 

2,204 

7,092 

2,191 
514 
658 
300 
231 
209 

4,103 

7,560 
(2)

7,558 

$

474 
131 
— 
43 
75 
571 
94 
415 

1,803 

7,416 

2,179 
578 
993 
343 
218 
136 

4,447 

6,789 
(1)

6,788 

$ 20,957 

$ 20,454 

PART II 
 
 
 
 
 
 
 
 
 
 
 
DUKE ENERGY FLORIDA, LLC
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation, amortization and accretion
Equity component of AFUDC
Gains on sales of other assets
Impairment charges
Deferred income taxes
Payments for asset retirement obligations
(Increase) decrease in

Net realized and unrealized mark-to-market and hedging transactions
Receivables
Receivables from affiliated companies
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Accounts payable to affiliated companies
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Purchases of debt and equity securities
Proceeds from sales and maturities of debt and equity securities
Notes receivable from affiliated companies
Other

Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt
Payments for the redemption of long-term debt
Notes payable to affiliated companies
Distribution to parent
Other

Net cash provided by financing activities

Net (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

Supplemental Disclosures:
Cash paid for interest, net of amount capitalized
Cash paid for (received from) income taxes
Significant non-cash transactions:
Accrued capital expenditures

See Notes to Consolidated Financial Statements

89

Years Ended December 31,

2020

2019

2018

$

771 

$

692 

$

554 

1,019 
(12)
(1)
(4)
27 
(80)

(14)
(64)
(3)
26 
40 

66 
(46)
39 
(7)
85 
(181)

869 
(6)
— 
(36)
180 
(22)

(33)
26 
17 
42 
156 

(36)
40 
(31)
(36)
(131)
(213)

793 
(47)
(1)
54 
159 
(35)

7 
(100)
(26)
58 
59 

(1)
17 
40 
82 
(429)
(75)

1,661 

1,478 

1,109 

(1,907)
(4,443)
4,495 
173 
(103)

(1,785)

495 
(572)
196 
— 
(1)

118 

(6)
56 

50 

321 
138 

214 

$

$

(1,844)
(669)
695 
(173)
(67)

(2,058)

918 
(262)
(108)
— 
13 

561 

(19)
75 

56 

332 
1 

272 

$

$

(1,634)
(517)
563 
313 
(65)

(1,340)

988 
(769)
108 
(75)
1 

253 

22 
53 

75 

270 
(120)

258 

$

$

PART II 
 
 
 
 
 
DUKE ENERGY FLORIDA, LLC
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions)

Balance at December 31, 2017

Net income
Other comprehensive loss
Distribution to parent
Other(a)

Balance at December 31, 2018

Net income
Other comprehensive income

Balance at December 31, 2019

Net income 
Other comprehensive loss

Balance at December 31, 2020

Accumulated Other
Comprehensive
Income (Loss)

Net Unrealized
Gains (Losses) on
Available-for-
Sale Securities

Total
Equity

Member’s
Equity

$

5,614 

$ 

4

$ 5,618 

554 
— 
(75)
4 

$

6,097 

692 
— 

6,789 

771 
— 

7,560 

$

$

— 
(1)
— 
(5)

554 
(1)
(75)
(1)

(2)

$ 6,095 

— 
1

692 
1 

(1)

$ 6,788 

— 
(1)

(2)

771 
(1)

$ 7,558 

$

$

$

(a)  Amounts represent a cumulative-effect adjustment due to implementation of a new accounting standard related to Financial Instruments Classification and Measurement. See Note 1 for more information.

See Notes to Consolidated Financial Statements

90

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of  
Duke Energy Ohio, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Duke Energy Ohio, Inc. and subsidiaries (the “Company”) as of December 31, 2020 and 

2019, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period 
ended December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the three 
years in the period ended December 31, 2020, 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 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.

Critical Audit Matter 

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or 
required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1 and 3 to the financial statements.

Critical Audit Matter Description

The Company is subject to rate regulation by the Public Utilities Commission of Ohio and by the Kentucky Public Service Commission (collectively the 

“Commissions”), which have jurisdiction with respect to the electric and gas rates of the Company. Management has determined it meets the criteria for the application 
of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of America. Significant 
judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because such costs are 
probable of future recovery in customer rates. As of December 31, 2020, the Company has approximately $650 million recorded as regulatory assets. 

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 
outcome of future decisions by the Commissions; to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting 
judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of 
accounting for rate regulation and the ratemaking process due to its inherent complexities.

91

PART IIHow the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

• We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, 

for any evidence that might contradict management’s assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following:

˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.

˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 
approved regulatory orders, as applicable.

˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

/s/ Deloitte & Touche LLP

Charlotte, North Carolina 
February 25, 2021  
We have served as the Company’s auditor since 2002.

92

PART IIDUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(in millions)

Operating Revenues 
Regulated electric 
Regulated natural gas 
Nonregulated electric and other 

Total operating revenues 

Operating Expenses
Fuel used in electric generation and purchased power – regulated 
Cost of natural gas
Operation, maintenance and other 
Depreciation and amortization 
Property and other taxes 

Total operating expenses 

Losses on Sales of Other Assets and Other, net 

Operating Income 
Other Income and Expenses, net 
Interest Expense 

Income From Continuing Operations Before Income Taxes
Income Tax Expense From Continuing Operations

Income From Continuing Operations
Loss From Discontinued Operations, net of tax

Net Income and Comprehensive Income

See Notes to Consolidated Financial Statements

Years Ended December 31,

2020

2019

2018

$ 1,405 
453 
— 

$ 1,456 
484 
— 

$ 1,450 
506 
1 

1,858 

1,940 

1,957 

339 
73 
463 
278 
324 

388 
95 
520 
265 
308 

1,477 

1,576 

— 

381 
16 
102 

295 
43 

252 
— 

— 

364 
24 
109 

279 
40 

239 
(1)

412 
113 
480 
268 
290 

1,563 

(106)

288 
23 
92 

219 
43 

176 
— 

$ 252 

$

238 

$

176 

93

PART II 
 
 
DUKE ENERGY OHIO, INC.
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS
Current Assets
Cash and cash equivalents
Receivables (net of allowance for doubtful accounts of $4 at 2020 and $4 at 2019)
Receivables from affiliated companies
Inventory
Regulatory assets
Other

Total current assets

Property, Plant and Equipment
Cost
Accumulated depreciation and amortization

Net property, plant and equipment

Other Noncurrent Assets
Goodwill
Regulatory assets
Operating lease right-of-use assets, net
Other

Total other noncurrent assets

Total Assets

LIABILITIES AND EQUITY
Current Liabilities
Accounts payable
Accounts payable to affiliated companies
Notes payable to affiliated companies
Taxes accrued
Interest accrued
Current maturities of long-term debt
Asset retirement obligations
Regulatory liabilities
Other

Total current liabilities

Long-Term Debt

Long-Term Debt Payable to Affiliated Companies

Other Noncurrent Liabilities
Deferred income taxes
Asset retirement obligations
Regulatory liabilities
Operating lease liabilities
Accrued pension and other post-retirement benefit costs
Other

Total other noncurrent liabilities

Commitments and Contingencies

Equity
Common stock, $8.50 par value, 120 million shares authorized; 90 million shares outstanding at 2020 and 2019
Additional paid-in capital
Retained earnings

Total equity

Total Liabilities and Equity

See Notes to Consolidated Financial Statements

94

December 31,

2020

2019

$

14 
98 
102 
110 
39 
31 

394 

$

17 
84 
92 
135 
49 
21 

398 

11,022 
(3,013)

8,009 

10,241 
(2,843)

7,398 

920 
610 
20 
72 

920 
549 
21 
52 

1,622 

1,542 

$ 10,025 

$ 9,338 

$

279 
68 
169 
247 
31 
50 
3 
65 
70 

982 

3,014 

25 

981 
108 
748 
20 
113 
99 

$

288 
68 
312 
219 
30 
— 
1 
64 
75 

1,057 

2,594 

25 

922 
79 
763 
21 
100 
94 

2,069 

1,979 

762 
2,776 
397 

3,935 

762 
2,776 
145 

3,683 

$ 10,025 

$ 9,338 

PART II 
 
 
 
 
 
 
 
 
 
 
 
Years Ended December 31,

2020

2019

2018

$

252 

$

238 

$

176 

283 
(7)
— 
31 
(2)
14 

(13)
9 
25 
(18)

2 
— 
30 
3 
(32)
(2)

575 

(834)
(19)
(48)

(901)

467 
— 
(144)

323 

(3)
17 

14 

97 
— 

104 
— 

$

$

269 
(13)
— 
81 
(8)
7 

20 
22 
(9)
(5)

(17)
(10)
17 
1 
(26)
(41)

526 

(952)
— 
(68)

(1,020)

1,003 
(551)
38 

490 

(4)
21 

17 

97 
(37)

109 
— 

$

$

271 
(11)
106 
25 
(3)
24 

(33)
19 
7 
16 

(19)
16 
12 
14 
(24)
(26)

570 

(827)
14 
(89)

(902)

99 
(3)
245 

341 

9 
12 

21 

87 
(6)

95 
106 

$

$

DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation, amortization and accretion
Equity component of AFUDC
Losses on sales of other assets
Deferred income taxes
Payments for asset retirement obligations
Provision for rate refunds
(Increase) decrease in

Receivables
Receivables from affiliated companies
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Accounts payable to affiliated companies
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Notes receivable from affiliated companies
Other

Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt
Payments for the redemption of long-term debt
Notes payable to affiliated companies

Net cash provided by financing activities

Net (decrease) increase in cash and cash equivalents
Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Supplemental Disclosures:
Cash paid for interest, net of amount capitalized
Cash received from income taxes
Significant non-cash transactions:
Accrued capital expenditures
Non-cash equity contribution from parent

See Notes to Consolidated Financial Statements

95

PART II 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions)

Balance at December 31, 2017

Net income
Contribution from parent

Balance at December 31, 2018

Net income
Balance at December 31, 2019

Net income

Balance at December 31, 2020

See Notes to Consolidated Financial Statements

Common
Stock

Additional
Paid-in
Capital

Retained
Earnings
(Deficit)

Total
Equity

$

762 

$

2,670 

$

(269)

$ 3,163 

— 
— 

762 

— 
762 

— 

762 

$

$

$

— 
106 

2,776 

— 
2,776 

— 

2,776 

$

$

$

176 
— 

(93)

238 
145 

252 

397 

$

$

$

176 
106 

$ 3,445 

238 
$ 3,683 

252 

$ 3,935 

96

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of  
Duke Energy Indiana, LLC 

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Duke Energy Indiana, LLC and subsidiaries (the “Company”) as of December 31, 2020 
and 2019, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the period 
ended December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the three 
years in the period ended December 31, 2020, 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 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.

Critical Audit Matters 

The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or 

required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the 
accounts or disclosures to which they relate.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1 and 3 to the financial statements.

Critical Audit Matter Description

The Company is subject to rate regulation by the Indiana Utility Regulatory Commission (the “Commission”), which has jurisdiction with respect to the electric 
rates of the Company. Management has determined it meets the criteria for the application of regulated operations accounting in preparing its financial statements 
under accounting principles generally accepted in the United States of America. Significant judgment can be required to determine if otherwise recognizable incurred 
costs qualify to be presented as a regulatory asset and deferred because such costs are probable of future recovery in customer rates. As of December 31, 2020, the 
Company has approximately $1.3 billion recorded as regulatory assets. 

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 

outcome of future decisions by the Commission; to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting 
judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these judgments required specialized knowledge of accounting 
for rate regulation and the ratemaking process due to its inherent complexities. 

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

97

PART II• We read relevant regulatory orders issued by the Commission, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commission’s treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commission, that may impact the Company’s future rates, 

for any evidence that might contradict management’s assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following:

˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.

˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 
approved regulatory orders, as applicable.

˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

Duke Energy Indiana Coal Ash Asset Retirement Obligations – Refer to Notes 3, 4, and 9 to the financial statements

Critical Audit Matter Description

Duke Energy Indiana has asset retirement obligations associated with coal ash impoundments at operating and retired coal generation facilities. These legal 

obligations are the result of Indiana state and federal regulations. There is significant judgment in determining the assumptions used in estimating the closure costs 
for each site since Duke Energy Indiana does not have approved closure plans for certain sites. Potential changes to the projected closure costs for each site as well 
as probability weightings for the cash flows associated with the different potential closure methods (“probability weightings”) creates estimation uncertainty. The 
liability for coal ash asset retirement obligations at Duke Energy Indiana was $1,140 million at December 31, 2020. 

We identified the asset retirement obligations associated with coal ash impoundments at Duke Energy Indiana as a critical audit matter because of the 

significant management estimates and assumptions, including projected closure costs as well as the different potential closure methods. The audit procedures 
to evaluate the reasonableness of management’s estimates and assumptions related to potential changes to the projected closure costs for each site as well as 
probability weightings for the cash flows associated with the different potential closure methods required a high degree of auditor judgment and an increased extent of 
effort, including the need to involve our environmental specialists.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the underlying estimated closure costs for coal ash asset retirement obligations at Duke Energy Indiana included the following, 

among others:

• We tested the effectiveness of controls over management’s coal ash asset retirement obligation estimate, including those over management’s determination 

of the estimated closure costs and probability weightings.

• We evaluated management’s ability to accurately estimate future closure costs by comparing actual closure costs to management’s historical estimates.

• We tested the mathematical accuracy of management’s coal ash asset retirement obligation calculations, including the application of probability weightings.

• We made inquiries of internal and external legal counsel regarding the status of the legal matters associated with the probability weightings.

• We inspected the opinions from internal and external legal counsel supporting the probability weightings.

• We inspected the Company’s filings with and orders from the Indiana Department of Environmental Management, for evidence that might contradict 

management’s assertions regarding the estimated closure costs and probability weightings.

• With the assistance of our environmental specialists, we evaluated the reasonableness of management’s estimated closure costs by comparing the costs to 

actual costs incurred at comparable coal ash impoundments, underlying contracts, and publicly available industry cost data, as applicable.

/s/ Deloitte & Touche LLP

Charlotte, North Carolina 
February 25, 2021  
We have served as the Company’s auditor since 2002.

98

PART IIDUKE ENERGY INDIANA, LLC
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(in millions)

Operating Revenues

Operating Expenses
Fuel used in electric generation and purchased power
Operation, maintenance and other
Depreciation and amortization
Property and other taxes
Impairment charges

Total operating expenses

Operating Income 
Other Income and Expenses, net
Interest Expense

Income Before Income Taxes
Income Tax Expense 

Net Income and Comprehensive Income

See Notes to Consolidated Financial Statements

Years Ended December 31,

2020

2019

2018

$ 2,795 

$ 3,004 

$ 3,059 

767 
762 
569 
81 
— 

935 
790 
525 
69 
— 

2,179 

2,319 

616 
37 
161 

492 
84 

$

408 

$

685 
41 
156 

570 
134 

436 

1,000 
788 
520 
78 
30 

2,416 

643 
45 
167 

521 
128 

393 

$

99

PART II 
 
 
DUKE ENERGY INDIANA, LLC
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS
Current Assets
Cash and cash equivalents
Receivables (net of allowance for doubtful accounts of $3 at 2020 and $3 at 2019)
Receivables from affiliated companies
Inventory
Regulatory assets
Other

Total current assets

Property, Plant and Equipment
Cost
Accumulated depreciation and amortization

Net property, plant and equipment

Other Noncurrent Assets

Regulatory assets
Operating lease right-of-use assets, net
Other

Total other noncurrent assets

Total Assets

LIABILITIES AND EQUITY
Current Liabilities
Accounts payable
Accounts payable to affiliated companies
Notes payable to affiliated companies
Taxes accrued
Interest accrued
Current maturities of long-term debt
Asset retirement obligations
Regulatory liabilities
Other

Total current liabilities

Long-Term Debt

Long-Term Debt Payable to Affiliated Companies

Other Noncurrent Liabilities
Deferred income taxes
Asset retirement obligations
Regulatory liabilities
Operating lease liabilities
Accrued pension and other post-retirement benefit costs
Investment tax credits
Other

Total other noncurrent liabilities

Commitments and Contingencies

Equity
Member's Equity

Total Liabilities and Equity

See Notes to Consolidated Financial Statements

100

December 31,

2020

2019

$

7 
55 
112 
473 
125 

37 

809 

17,382 
(5,661)

11,721 

1,203 
55 
253 

1,511 

$

25 
60 
79 
517 
90 

60 

831 

16,305 
(5,233)

11,072 

1,082 
57 
234 

1,373 

$ 14,041 

$ 13,276 

$

188 
88 
131 
62 
51 
70 
168 
111 
83 

952 

3,871 

150 

1,228 
1,008 
1,627 
53 
171 
168 
30 

4,285 

$

201 
87 
30 
49 
58 
503 
189 
55 
112 

1,284 

3,404 

150 

1,150 
643 
1,685 
55 
148 
164 
18 

3,863 

4,783 

4,575 

$ 14,041 

$ 13,276 

PART II 
 
 
 
 
 
 
 
 
 
 
DUKE ENERGY INDIANA, LLC
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation, amortization, and accretion
Equity component of AFUDC
Impairment charges
Deferred income taxes
Payments for asset retirement obligations
Provision for rate refunds
(Increase) decrease in

Receivables
Receivables from affiliated companies
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Accounts payable to affiliated companies
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Purchases of debt and equity securities
Proceeds from sales and maturities of debt and equity securities
Notes receivable from affiliated companies
Other

Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt
Payments for the redemption of long-term debt
Notes payable to affiliated companies
Distributions to parent
Other

Net cash used in financing activities

Net (decrease) increase in cash and cash equivalents
Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Supplemental Disclosures:

Cash paid for interest, net of amount capitalized
Cash paid for (received from) income taxes
Significant non-cash transactions:
Accrued capital expenditures

See Notes to Consolidated Financial Statements

101

Years Ended December 31,

2020

2019

2018

$ 408 

$ 436 

$ 393 

572 
(23)
— 
29 
(63)
— 

8 
— 
44 
(3)

(12)
1 
13 
6 
(68)
26 

938 

(888)
(37)
22 
(33)
48 

(888)

544 
(513)
101 
(200)
— 

(68)

(18)
25 

$

7 

$

531 
(18)
— 
156 
(48)
— 

(8)
41 
(95)
76 

(10)
4 
(25)
15 
(74)
16 

524 
(32)
30 
95 
(69)
53 

7 
3 
28 
(25)

37 
5 
(52)
14 
26 
(31)

997 

1,006 

(876)
(26)
20 
— 
(49)

(931)

485 
(213)
(137)
(200)
— 

(65)

1 
24 

25 

(832)
(48)
44 
— 
18 

(818)

— 
(3)
6 
(175)
(1)

(173)

15 
9 

24 

$

$ 164 
36 

$ 150 
(6)

$ 162 
75 

101 

102 

88 

PART II 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DUKE ENERGY INDIANA, LLC
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions)

Balance at December 31, 2017

Net income
Distributions to parent

Balance at December 31, 2018

Net income
Distributions to parent 

Balance at December 31, 2019

Net income 
Distributions to parent 

Balance at December 31, 2020

See Notes to Consolidated Financial Statements

Member’s
Equity

$

4,121 

393 
(175)

$

4,339 

436 
(200)

$

4,575 

408 
(200)

$

4,783 

102

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the shareholder and the Board of Directors of  
Piedmont Natural Gas Company, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Piedmont Natural Gas Company, Inc. and subsidiaries (the “Company”) as of December 31, 

2020 and 2019, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows, for each of the three years in the 
period ended December 31, 2020, and the related notes (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, 2020 and 2019, and the results of its operations and its cash flows for each of the 
three years in the period ended December 31, 2020, 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 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.

Critical Audit Matter 

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or 
required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved 
our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Regulatory Matters — Impact of Rate Regulation on the Financial Statements — Refer to Notes 1 and 3 to the financial statements.

Critical Audit Matter Description

The Company is subject to rate regulation by the North Carolina Utilities Commission, the Public Service Commission of South Carolina, and the Tennessee Public 

Utility Commission (collectively the “Commissions”), which have jurisdiction with respect to the gas rates of the Company. Management has determined it meets the 
criteria for the application of regulated operations accounting in preparing its financial statements under accounting principles generally accepted in the United States of 
America. Significant judgment can be required to determine if otherwise recognizable incurred costs qualify to be presented as a regulatory asset and deferred because 
such costs are probable of future recovery in customer rates. As of December 31, 2020, the Company has approximately $450 million recorded as regulatory assets.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management, including assumptions regarding the 
outcome of future decisions by the Commissions; to support its assertions on the likelihood of future recovery for deferred costs. Given that management’s accounting 
judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these judgments required specialized knowledge of 
accounting for rate regulation and the ratemaking process due to its inherent complexities. 

103

PART IIHow the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the recovery of regulatory assets included the following, among others:

• We tested the effectiveness of management’s controls over the evaluation of the likelihood of the recovery in future rates of regulatory assets and the 

monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

• We read relevant regulatory orders issued by the Commissions, regulatory statutes, interpretations, procedural memorandums, filings made by interveners, 
and other publicly available information to assess the likelihood of recovery in future rates based on precedents of the Commissions’ treatment of similar 
costs under similar circumstances. We evaluated the external information and compared it to management’s recorded regulatory asset balances for 
completeness.

• For regulatory matters in process, we inspected the Company’s and intervenors’ filings with the Commissions, that may impact the Company’s future rates, 

for any evidence that might contradict management’s assertions.

• We evaluated the reasonableness of management’s judgments regarding the recoverability of regulatory asset balances by performing the following: 

˚ We inquired of management regarding changes in regulatory orders and regulatory asset balances during the year.

˚ We evaluated the reasonableness of such changes based on our knowledge of commission-approved amortization, expected incurred costs, and recently 
approved regulatory orders, as applicable.

˚ We utilized trend analyses to evaluate the historical consistency of regulatory asset balances. 

˚ We compared the recorded regulatory asset balance to an independently developed expectation of the corresponding balance.

• We obtained representation from management asserting that regulatory assets recorded on the financial statements are probable of recovery. 

/s/ Deloitte & Touche LLP

Charlotte, North Carolina 
February 25, 2021  
We have served as the Company’s auditor since 1951.

104

PART IIPIEDMONT NATURAL GAS COMPANY, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(in millions)

Operating Revenues
Regulated natural gas
Nonregulated natural gas and other

Total operating revenues

Operating Expenses
Cost of natural gas
Operation, maintenance and other
Depreciation and amortization
Property and other taxes
Impairment charges

Total operating expenses

Operating Income
Equity in earnings of unconsolidated affiliates
Other income and expense, net

Total other income and expenses

Interest Expense

Income Before Income Taxes
Income Tax Expense

Net Income and Comprehensive Income

Years Ended December 31,

2020

2019

2018

$ 1,286 
11 

$ 1,369 
12 

$ 1,365 
10 

1,297 

1,381 

1,375 

386 
322 
180 
53 
7 

948 

349 
9 
51 

60 

118 

291 
18 

273 

$

532 
328 
172 
45 
— 

584 
357 
159 
49 
— 

1,077 

1,149 

304 
8 
20 

28 

87 

245 
43 

202 

$

226 
7 
14 

21 

81 

166 
37 

129 

$

See Notes to Consolidated Financial Statements

105

PART II 
PIEDMONT NATURAL GAS COMPANY, INC.
CONSOLIDATED BALANCE SHEETS

(in millions)

ASSETS
Current Assets
Receivables (net of allowance for doubtful accounts of $12 at 2020 and $6 at 2019)
Receivables from affiliated companies
Inventory
Regulatory assets
Other

Total current assets

Property, Plant and Equipment
Cost
Accumulated depreciation and amortization

Net property, plant and equipment

Other Noncurrent Assets
Goodwill
Regulatory assets
Operating lease right-of-use assets, net
Investments in equity method unconsolidated affiliates
Other

Total other noncurrent assets

Total Assets

LIABILITIES AND EQUITY
Current Liabilities
Accounts payable
Accounts payable to affiliated companies
Notes payable to affiliated companies
Taxes accrued
Interest accrued
Current maturities of long-term debt
Regulatory liabilities
Other

Total current liabilities

Long-Term Debt

Other Noncurrent Liabilities
Deferred income taxes
Asset retirement obligations
Regulatory liabilities
Operating lease liabilities
Accrued pension and other post-retirement benefit costs
Other

Total other noncurrent liabilities

Commitments and Contingencies

Equity
Common stock, 0 par value: 100 shares authorized and outstanding at 2020 and 2019
Retained earnings

Total equity

Total Liabilities and Equity

See Notes to Consolidated Financial Statements

106

December 31,

2020

2019

$

250 
10 
68 
153 
20 

501 

$

241 
10 
72 
73 
28 

424 

9,134 
(1,749)

7,385 

8,446 
(1,681)

6,765 

49 
302 
20 
88 
270 

729 

49 
290 
24 
83 
121 

567 

$ 8,615 

$ 7,756 

$

230 
79 
530 
23 
34 
160 
88 
69 

1,213 

2,620 

821 
20 
1,044 
19 
8 
155 

2,067 

1,310 
1,405 

2,715 

$

215 
3 
476 
24 
33 
— 
81 
67 

899 

2,384 

708 
17 
1,131 
23 
3 
148 

2,030 

1,310 
1,133 

2,443 

$ 8,615 

$ 7,756 

PART IIYears Ended December 31,

2020

2019

2018

$

273 

$

202 

$

129 

182 
(19)
7 
53 
(9)
(33)

10 
— 
3 
(66)

16 
76 
3 
(11)
(11)
7 

481 

(901)
— 
(28)

(929)

394 
— 
54 
— 

448 

— 
— 

174 
— 
— 
136 
(8)
2 

28 
12 
(2)
(25)

(7)
(35)
(60)
1 
1 
(10)

409 

(1,053)
(16)
(14)

(1,083)

596 
(350)
278 
150 

674 

— 
— 

161 
— 
— 
(31)
(7)
43 

7 
(15)
(4)
71 

15 
25 
65 
21 
3 
(5)

478 

(721)
— 
(10)

(731)

100 
— 
(166)
300 

234 

(19)
19 

$ — 

$ — 

$ — 

$

115 
(36)

106 

$

84 
(31)

109 

$

79 
(16)

96 

PIEDMONT NATURAL GAS COMPANY, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

CASH FLOWS FROM OPERATING ACTIVITIES
Net income
Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization
Equity component of AFUDC
Impairment charges
Deferred income taxes
Equity in (earnings) losses from unconsolidated affiliates
Provision for rate refunds
(Increase) decrease in

Receivables
Receivables from affiliated companies
Inventory
Other current assets
Increase (decrease) in
Accounts payable
Accounts payable to affiliated companies
Taxes accrued
Other current liabilities

Other assets
Other liabilities

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures
Contributions to equity method investments
Other

Net cash used in investing activities

CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt
Payments for the redemption of long-term debt
Notes payable to affiliated companies
Capital contribution from parent

Net cash provided by financing activities

Net decrease in cash and cash equivalents
Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Supplemental Disclosures:
Cash paid for interest, net of amount capitalized
Cash received from income taxes
Significant non-cash transactions:
Accrued capital expenditures

See Notes to Consolidated Financial Statements

107

PART IIPIEDMONT NATURAL GAS COMPANY, INC.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions)

Balance at December 31, 2017

Net income
Contribution from parent

Balance at December 31, 2018

Net income 
Contribution from parent

Balance at December 31, 2019

Net income
Other

Balance at December 31, 2020

See Notes to Consolidated Financial Statements

Common
Stock

Retained
Earnings

$

860 

— 
300 

$ 1,160 

— 
150 

$

$

802 

129 
— 

931 

202 
— 

Total
Equity

$ 1,662 

129 
300 

$ 2,091 

202 
150 

$ 1,310 

$ 1,133 

$ 2,443 

— 
— 

273 
(1)

273 
(1)

$ 1,310 

$ 1,405 

$ 2,715 

108

PART IIDUKE ENERGY CORPORATION  •  DUKE ENERGY CAROLINAS, LLC  •  PROGRESS ENERGY, INC.  •  DUKE ENERGY PROGRESS, LLC  •   
DUKE ENERGY FLORIDA, LLC  •  DUKE ENERGY OHIO, INC.  •  DUKE ENERGY INDIANA, LLC  •  PIEDMONT NATURAL GAS COMPANY, INC.

Combined Notes to Consolidated Financial Statements 

For the Years Ended December 31, 2020, 2019 and 2018

Index to Combined Notes To Consolidated Financial Statements

The notes to the consolidated financial statements are a combined presentation. The following table indicates the registrants to which the notes apply.

Registrant

Duke Energy
Duke Energy Carolinas
Progress Energy
Duke Energy Progress
Duke Energy Florida
Duke Energy Ohio
Duke Energy Indiana
Piedmont

Applicable Notes

1

•
•
•
•
•
•
•
•

2

•
•
•
•
•
•
•
•

3

•
•
•
•
•
•
•
•

4

•
•
•
•
•
•
•
•

5

•
•
•
•
•
•
•
•

6

•
•
•
•
•
•
•
•

7

•

8

•
•

•

9

•
•
•
•
•
•
•
•

10

11

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

12

•

•

13

14

15

16

17

18

•
•
•
•
•
•
•
•

•
•
•
•
•

•

•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•

19

•

20

21

22

23

24

25

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

•
•
•
•
•
•
•
•

Tables within the notes may not sum across due to (i) Progress Energy’s consolidation of Duke Energy Progress, Duke Energy Florida and other subsidiaries that 

are not registrants and (ii) subsidiaries that are not registrants but included in the consolidated Duke Energy balances.

1.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NATURE OF OPERATIONS AND BASIS OF CONSOLIDATION

Duke Energy is an energy company headquartered in Charlotte, North 
Carolina, subject to regulation by the FERC and other regulatory agencies listed 
below. Duke Energy operates in the U.S. primarily through its direct and indirect 
subsidiaries. Certain Duke Energy subsidiaries are also subsidiary registrants, 
including Duke Energy Carolinas; Progress Energy; Duke Energy Progress; Duke 
Energy Florida; Duke Energy Ohio; Duke Energy Indiana and Piedmont. When 
discussing Duke Energy’s consolidated financial information, it necessarily 
includes the results of its separate Subsidiary Registrants, which along with 
Duke Energy, are collectively referred to as the Duke Energy Registrants.

The information in these combined notes relates to each of the Duke 

Energy Registrants as noted in the Index to Combined Notes to Consolidated 
Financial Statements. However, none of the Subsidiary Registrants make any 
representation as to information related solely to Duke Energy or the Subsidiary 
Registrants of Duke Energy other than itself.

These Consolidated Financial Statements include, after eliminating 
intercompany transactions and balances, the accounts of the Duke Energy 
Registrants and subsidiaries or VIEs where the respective Duke Energy 
Registrants have control. See Note 17 for additional information on VIEs. These 
Consolidated Financial Statements also reflect the Duke Energy Registrants’ 
proportionate share of certain jointly owned generation and transmission 
facilities. See Note 8 for additional information on joint ownership. Substantially 
all of the Subsidiary Registrants’ operations qualify for regulatory accounting.

Duke Energy Carolinas is a regulated public utility primarily engaged in the 
generation, transmission, distribution and sale of electricity in portions of North 
Carolina and South Carolina. Duke Energy Carolinas is subject to the regulatory 
provisions of the NCUC, PSCSC, NRC and FERC. 

Progress Energy is a public utility holding company, which conducts 

operations through its wholly owned subsidiaries, Duke Energy Progress and 
Duke Energy Florida. Progress Energy is subject to regulation by FERC and other 
regulatory agencies listed below. 

Duke Energy Progress is a regulated public utility primarily engaged in the 
generation, transmission, distribution and sale of electricity in portions of North 
Carolina and South Carolina. Duke Energy Progress is subject to the regulatory 
provisions of the NCUC, PSCSC, NRC and FERC. 

Duke Energy Florida is a regulated public utility primarily engaged in 
the generation, transmission, distribution and sale of electricity in portions of 
Florida. Duke Energy Florida is subject to the regulatory provisions of the FPSC, 
NRC and FERC. 

Duke Energy Ohio is a regulated public utility primarily engaged in the 
transmission and distribution of electricity in portions of Ohio and Kentucky, the 
generation and sale of electricity in portions of Kentucky and the transportation 
and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio 
conducts competitive auctions for retail electricity supply in Ohio whereby 
the energy price is recovered from retail customers and recorded in Operating 
Revenues on the Consolidated Statements of Operations and Comprehensive 
Income. Operations in Kentucky are conducted through its wholly owned 
subsidiary, Duke Energy Kentucky. References herein to Duke Energy Ohio 
collectively include Duke Energy Ohio and its subsidiaries, unless otherwise 
noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, 
KPSC and FERC.

Duke Energy Indiana is a regulated public utility primarily engaged in 

the generation, transmission, distribution and sale of electricity in portions of 
Indiana. Duke Energy Indiana is subject to the regulatory provisions of the IURC 
and FERC. 

Piedmont is a regulated public utility primarily engaged in the distribution 

of natural gas in portions of North Carolina, South Carolina and Tennessee. 
Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, TPUC and 
FERC.

Certain prior year amounts have been reclassified to conform to the 

current year presentation.

COVID-19

The COVID-19 pandemic is having a significant impact on global health 

and economic environments. In March 2020, the World Health Organization 
declared COVID-19 a global pandemic, and the federal government proclaimed 
that the COVID-19 outbreak in the United States constitutes a national 
emergency. The Duke Energy Registrants are monitoring developments closely 
and responding appropriately. The company incurred approximately $112 million 
of incremental COVID-19 costs before deferral for the year ended December 31, 
2020, included in Operation, maintenance and other on the Consolidated 

109

PART II 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Statements of Operations. Further, the company waived approximately 
$64 million of late payment fees for the year ended December 31, 2020. 
The company has deferred approximately $76 million of the incremental costs, 
which were primarily bad debt expense, personal protective equipment and 
cleaning supplies, and a cost component of late payment fees. See Notes 3, 6, 
17, 18 and 23 for additional information as well as steps taken to mitigate the 
impacts to our business and customers from the COVID-19 pandemic.

Other Current Assets and Liabilities

The following table provides a description of amounts included in Other 

within Current Assets or Current Liabilities that exceed 5% of total Current 
Assets or Current Liabilities on the Duke Energy Registrants’ Consolidated 
Balance Sheets at either December 31, 2020, or 2019.

(in millions)

Location

Duke Energy
Other accrued liabilities
Accrued compensation
Duke Energy Carolinas
Accrued compensation 
Other accrued liabilities
Progress Energy 
Customer deposits 
Duke Energy Florida 
Customer deposits 
Duke Energy Ohio 
Gas Storage
Duke Energy Indiana 
Income taxes receivable

Current Liabilities
Current Liabilities

Current Liabilities
Current Liabilities

Current Liabilities

Current Liabilities

Current Assets

Current Assets

Discontinued Operations

December 31,

2020

1,455 
662 

213 
178 

347 

203 

21

9 

$

$

$

$

$

$

2019

604 
862 

271 
147

354 

209 

—

44

$

$

$

$

$

$

Duke Energy has elected to present cash flows of discontinued operations 

combined with cash flows of continuing operations. Unless otherwise noted, 
the notes to these consolidated financial statements exclude amounts related 
to discontinued operations for all periods presented. For the years ended 
December 31, 2020, 2019 and 2018, the Income (Loss) From Discontinued 
Operations, net of tax on Duke Energy’s Consolidated Statements of Operations 
is entirely attributable to controlling interest. 

(in millions)

Noncontrolling Interest Capital Contributions
Cash received for the sale of noncontrolling interest to tax equity members
Cash received for the sale of noncontrolling interest to pro rata share members

Total Noncontrolling Interest Capital Contributions

Noncontrolling Interest Allocation of Income
Allocated losses to noncontrolling tax equity members utilizing the HLBV method
Allocated losses to noncontrolling members based on pro rata shares of ownership

Total Noncontrolling Interest Allocated Losses

110

Noncontrolling Interest

Duke Energy maintains a controlling financial interest in certain less than 
wholly owned nonregulated subsidiaries. As a result, Duke Energy consolidates 
these subsidiaries and presents the third-party investors’ portion of Duke 
Energy’s net income (loss), net assets and comprehensive income (loss) as 
noncontrolling interest. Noncontrolling interest is included as a component of 
equity on the Consolidated Balance Sheet.

Several operating agreements of Duke Energy’s subsidiaries with 

noncontrolling interest are subject to allocations of tax attributes and cash flows 
in accordance with contractual agreements that vary throughout the lives of 
the subsidiaries. Therefore, Duke Energy and the other investors’ (the owners) 
interests in the subsidiaries are not fixed, and the subsidiaries apply the HLBV 
method in allocating income or loss and other comprehensive income or loss 
(all measured on a pretax basis) to the owners. The HLBV method measures 
the amounts that each owner would hypothetically claim at each balance sheet 
reporting date, including tax benefits realized by the owners, most of which is 
over the IRS recapture period, upon a hypothetical liquidation of the subsidiary 
at the net book value of its underlying assets. The change in the amount that 
each owner would hypothetically receive at the reporting date compared to the 
amount it would have received on the previous reporting date represents the 
amount of income or loss allocated to each owner for the reporting period. 
Other operating agreements of Duke Energy’s subsidiaries with 
noncontrolling interest allocate profit and loss based on their pro rata shares 
of the ownership interest in the respective subsidiary. Therefore, Duke Energy 
allocates net income or loss and other comprehensive income or loss of these 
subsidiaries to the owners based on their pro rata shares. 

During the third quarter of 2019, Duke Energy completed a sale of 
minority interest in a portion of certain renewable assets within the Commercial 
Renewables Segment for pretax proceeds to Duke Energy of $415 million. The 
portion of Duke Energy’s commercial renewables energy portfolio sold includes 
49% of 37 operating wind, solar and battery storage assets and 33% of 11 
operating solar assets across the U.S. Duke Energy retained control of these 
assets, and, therefore, no gain or loss was recognized on the Consolidated 
Statements of Operations. The difference between the consideration received 
and the carrying value of the noncontrolling interest claim on net assets is 
$466 million, net of tax benefit of $8 million, and was recorded to equity.

The following table presents cash received for the sale of noncontrolling 

interest and allocated losses to noncontrolling interest for the years ended 
December 31, 2020, and 2019.

December 31,

2020

2019

$

$

$

$

426 
— 

426 

271 
24 

295 

$

$

$

$

428 
415 

843 

165 
12 

177 

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
 
 
 
2021 Sale of Minority Interest in Duke Energy Indiana

In January 2021, Duke Energy entered into a definitive agreement 

providing for the sale of a 19.9% minority interest in Duke Energy Indiana 
with an affiliate of GIC, Singapore’s sovereign wealth fund and an experienced 
investor in U.S. infrastructure. To facilitate the transaction, Duke Energy will 
issue and sell membership interests in Duke Energy Indiana Holdco, LLC. 
a newly created holding company that will own 100% of the issued and 
outstanding membership interests in Duke Energy Indiana. The transaction 
will be completed following two closings for an aggregate purchase price of 
approximately $2 billion. The first closing is expected to be completed in the 
second quarter of 2021 and Duke Energy will issue and sell 11.1% of the 
membership interests in exchange for 50% of the purchase price. Under the 
terms of the agreement, Duke Energy has the discretion to determine the timing 
of the second closing, but it will occur no later than January 2023. At the second 
closing, Duke Energy will issue and sell additional membership interests such 
that GIC will own 19.9% of the membership interests for the remaining 50% of 
the purchase price. Duke Energy will continue to operate and retain control of 
Duke Energy Indiana and, therefore, no gain or loss is expected to be recognized 
in the Consolidated Statements of Operations. Additionally, the transaction will 
be reflected within Duke Energy Corporations’ stockholders’ equity as a sale of a 
noncontrolling interest.

Acquisitions

The Duke Energy Registrants consolidate assets and liabilities from 
acquisitions as of the purchase date and include earnings from acquisitions in 
consolidated earnings after the purchase date.

SIGNIFICANT ACCOUNTING POLICIES

Use of Estimates

In preparing financial statements that conform to GAAP, the Duke Energy 

Registrants must make estimates and assumptions that affect the reported 
amounts of assets and liabilities, the reported amounts of revenues and 
expenses and the disclosure of contingent assets and liabilities at the date of 
the financial statements. Actual results could differ from those estimates.

Regulatory Accounting

The majority of the Duke Energy Registrants’ operations are subject 
to price regulation for the sale of electricity and natural gas by state utility 
commissions or FERC. When prices are set on the basis of specific costs 
of the regulated operations and an effective franchise is in place such that 
sufficient natural gas or electric services can be sold to recover those costs, 

the Duke Energy Registrants apply regulatory accounting. Regulatory accounting 
changes the timing of the recognition of costs or revenues relative to a company 
that does not apply regulatory accounting. As a result, regulatory assets and 
regulatory liabilities are recognized on the Consolidated Balance Sheets. 
Regulatory assets and liabilities are amortized consistent with the treatment of 
the related cost in the ratemaking process. Regulatory assets are reviewed for 
recoverability each reporting period. If a regulatory asset is no longer deemed 
probable of recovery, the deferred cost is charged to earnings. See Note 3 for 
further information.

Regulatory accounting rules also require recognition of a disallowance 
(also called “impairment”) loss if it becomes probable that part of the cost of a 
plant under construction (or a recently completed plant or an abandoned plant) 
will be disallowed for ratemaking purposes and a reasonable estimate of the 
amount of the disallowance can be made. For example, if a cost cap is set for 
a plant still under construction, the amount of the disallowance is a result of a 
judgment as to the ultimate cost of the plant. These disallowances can require 
judgments on allowed future rate recovery.

When it becomes probable that regulated generation, transmission or 
distribution assets will be abandoned, the cost of the asset is removed from 
plant in service. The value that may be retained as a regulatory asset on the 
balance sheet for the abandoned property is dependent upon amounts that 
may be recovered through regulated rates, including any return. As such, 
an impairment charge could be partially or fully offset by the establishment 
of a regulatory asset if rate recovery is probable. The impairment charge 
for a disallowance of costs for regulated plants under construction, recently 
completed or abandoned is based on discounted cash flows.

The Duke Energy Registrants utilize cost-tracking mechanisms, commonly 

referred to as fuel adjustment clauses or PGA clauses. These clauses allow 
for the recovery of fuel and fuel-related costs, portions of purchased power, 
natural gas costs and hedging costs through surcharges on customer rates. The 
difference between the costs incurred and the surcharge revenues is recorded 
either as an adjustment to Operating Revenues, Operating Expenses – Fuel 
used in electric generation or Operating Expenses – Cost of natural gas on the 
Consolidated Statements of Operations, with an off-setting impact on regulatory 
assets or liabilities.

Cash, Cash Equivalents and Restricted Cash 

All highly liquid investments with maturities of three months or less at 

the date of acquisition are considered cash equivalents. Duke Energy, Progress 
Energy and Duke Energy Florida have restricted cash balances related primarily 
to collateral assets, escrow deposits and VIEs. See Note 17 for additional 
information. Restricted cash amounts are included in Other within Current 
Assets and Other Noncurrent Assets on the Consolidated Balance Sheets. 
The following table presents the components of cash, cash equivalents and 
restricted cash included in the Consolidated Balance Sheets.

Current Assets

Cash and cash equivalents
Other

Other Noncurrent Assets

Other

December 31, 2020

December 31, 2019

Duke
Energy

Progress
Energy

$

259 
194 

103 

$

59 
39 

102 

Duke
Energy
Florida

$

11 
39 

— 

Duke
Energy

Progress
Energy

$ 311 
222 

$ 48 
39 

40 

39 

Total cash, cash equivalents and restricted cash

$

556  

$

200 

$

50  

$ 573  

$ 126 

111

Duke
Energy
Florida

$

$

17 
39 

— 

56 

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
Inventory

Inventory related to regulated operations is valued at historical cost. Inventory related to nonregulated operations is valued at the lower of cost or market. 
Inventory is charged to expense or capitalized to property, plant and equipment when issued, primarily using the average cost method. Excess or obsolete inventory is 
written down to the lower of cost or net realizable value. Once inventory has been written down, it creates a new cost basis for the inventory that is not subsequently 
written up. Provisions for inventory write-offs were not material at December 31, 2020, and 2019, respectively. The components of inventory are presented in the 
tables below.

(in millions) 

Materials and supplies 
Coal 
Natural gas, oil and other 

Total inventory 

(in millions) 

Materials and supplies 
Coal
Natural gas, oil and other

Total inventory 

December 31, 2020

Duke
Energy

$ 2,312 
561 
294 

Duke
Energy
Carolinas

$

785 
186 
39 

Progress
Energy

$

999 
193 
183 

Duke
Energy
Progress

$

673 
131 
107 

$ 3,167  

$ 1,010  

$ 1,375  

$

911  

Duke
Energy
Florida

$ 325 
63 
76 

$ 464  

December 31, 2019

Duke
Energy

$ 2,297 
586 
349 

$ 3,232 

Duke
Energy
Carolinas

$

768 
187 
41 

Progress
Energy

$ 1,038 
186 
199 

Duke
Energy
Progress

$

686 
138 
110 

$

996 

$ 1,423 

$

934 

Duke
Energy
Florida

$ 351 
48 
90 

$ 489 

Duke
Energy
Ohio

$

78 
16 
16 

$ 110  

Duke
Energy
Ohio

$ 79 
15 
41 

$ 135 

Duke
Energy
Indiana

$ 307 
165 
1 

$ 473 

Piedmont

$ 12 
— 
56 

$ 68 

Duke
Energy
Indiana

$

$ 318 
198 
1 

$ 517 

$

Piedmont

5 
— 
67 

72 

Investments in Debt and Equity Securities

The Duke Energy Registrants classify investments in equity securities as 

FV-NI and investments in debt securities as AFS. Both categories are recorded at 
fair value on the Consolidated Balance Sheets. Realized and unrealized gains and 
losses on securities classified as FV-NI are reported through net income. Unrealized 
gains and losses for debt securities classified as AFS are included in AOCI until 
realized, unless it is determined the carrying value of an investment has a credit 
loss. For certain investments of regulated operations, such as substantially all of 
the NDTF, realized and unrealized gains and losses (including any credit losses) on 
debt securities are recorded as a regulatory asset or liability. The credit loss portion 
of debt securities of nonregulated operations are included in earnings. Investments 
in debt and equity securities are classified as either current or noncurrent based on 
management’s intent and ability to sell these securities, taking into consideration 
current market liquidity. See Note 15 for further information.

Goodwill

Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont perform 
annual goodwill impairment tests as of August 31 each year at the reporting unit 
level, which is determined to be a business segment or one level below. Duke 
Energy, Progress Energy, Duke Energy Ohio and Piedmont update these tests 
between annual tests if events or circumstances occur that would more likely 
than not reduce the fair value of a reporting unit below its carrying value. See 
Note 11 for further information.

Intangible Assets

Intangible assets are included in Other in Other Noncurrent Assets on the 
Consolidated Balance Sheets. Generally, intangible assets are amortized using 

an amortization method that reflects the pattern in which the economic benefits 
of the intangible asset are consumed or on a straight-line basis if that pattern is 
not readily determinable. Amortization of intangibles is reflected in Depreciation 
and amortization on the Consolidated Statements of Operations. Intangible 
assets are subject to impairment testing and if impaired, the carrying value is 
accordingly reduced.

RECs are used to measure compliance with renewable energy 
standards and are held primarily for consumption. See Note 11 for further 
information.

Long-Lived Asset Impairments

The Duke Energy Registrants evaluate long-lived assets, excluding 
goodwill, for impairment when circumstances indicate the carrying value of 
those assets may not be recoverable. An impairment exists when a long-lived 
asset’s carrying value exceeds the estimated undiscounted cash flows expected 
to result from the use and eventual disposition of the asset. The estimated 
cash flows may be based on alternative expected outcomes that are probability 
weighted. If the carrying value of the long-lived asset is not recoverable based 
on these estimated future undiscounted cash flows, the carrying value of the 
asset is written down to its then current estimated fair value and an impairment 
charge is recognized.

The Duke Energy Registrants assess fair value of long-lived assets using 

various methods, including recent comparable third-party sales, internally 
developed discounted cash flow analysis and analysis from outside advisors. 
Triggering events to reassess cash flows may include, but are not limited 
to, significant changes in commodity prices, the condition of an asset or 
management’s interest in selling the asset.

112

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Equity Method Investment Impairments

Investments in affiliates that are not controlled by Duke Energy, but over 
which it has significant influence, are accounted for using the equity method. 
Equity method investments are assessed for impairment whenever events or 
changes in circumstances indicate that the carrying amount of the investment 
may not be recoverable. If the decline in value is considered to be other than 
temporary, the investment is written down to its estimated fair value, which 
establishes a new cost basis in the investment.

Impairment assessments use a discounted cash flow income approach 
and include consideration of the severity and duration of any decline in the fair 
value of the investments. The estimated cash flows may be based on alternative 
expected outcomes that are probability weighted. Key inputs that involve 
estimates and significant management judgment include cash flow projections, 
selection of a discount rate, probability weighting of potential outcomes, and 
whether any decline in value is considered temporary.

Property, Plant and Equipment

Property, plant and equipment are stated at the lower of depreciated 
historical cost net of any disallowances or fair value, if impaired. The Duke 
Energy Registrants capitalize all construction-related direct labor and material 
costs, as well as indirect construction costs such as general engineering, taxes 
and financing costs. See “Allowance for Funds Used During Construction and 
Interest Capitalized” for information on capitalized financing costs. Costs of 
renewals and betterments that extend the useful life of property, plant and 
equipment are also capitalized. The cost of repairs, replacements and major 
maintenance projects, which do not extend the useful life or increase the 
expected output of the asset, are expensed as incurred. Depreciation is generally 
computed over the estimated useful life of the asset using the composite 
straight-line method. Depreciation studies are conducted periodically to update 
composite rates and are approved by state utility commissions and/or the FERC 
when required. The composite weighted average depreciation rates, excluding 
nuclear fuel, are included in the table that follows.

Duke Energy 
Duke Energy Carolinas 
Progress Energy 
Duke Energy Progress 
Duke Energy Florida 
Duke Energy Ohio 
Duke Energy Indiana 
Piedmont

Years Ended December 31,

2020

3.0 %
2.8 %
3.2 %
3.1 %
3.3 %
2.9 %
3.5 %
2.3 %

2019

3.1 %
2.8 %
3.1 %
3.1 %
3.1 %
2.6 %
3.3 %
2.4 %

2018

3.0 %
2.8 %
2.9 %
2.9 %
3.0 %
2.8 %
3.3 %
2.5 %

In general, when the Duke Energy Registrants retire regulated property, 

plant and equipment, the original cost plus the cost of retirement, less salvage 
value and any depreciation already recognized, is charged to accumulated 
depreciation. However, when it becomes probable the asset will be retired 
substantially in advance of its original expected useful life or is abandoned, 
the cost of the asset and the corresponding accumulated depreciation is 
recognized as a separate asset. If the asset is still in operation, the net amount 
is classified as Generation facilities to be retired, net on the Consolidated 
Balance Sheets. If the asset is no longer operating, the net amount is classified 
in Regulatory assets on the Consolidated Balance Sheets if deemed recoverable 
(see discussion of long-lived asset impairments above). The carrying value of 
the asset is based on historical cost if the Duke Energy Registrants are allowed 

113

to recover the remaining net book value and a return equal to at least the 
incremental borrowing rate. If not, an impairment is recognized to the extent 
the net book value of the asset exceeds the present value of future revenues 
discounted at the incremental borrowing rate.

When the Duke Energy Registrants sell entire regulated operating units, 

or retire or sell nonregulated properties, the original cost and accumulated 
depreciation and amortization balances are removed from Property, Plant and 
Equipment on the Consolidated Balance Sheets. Any gain or loss is recorded 
in earnings, unless otherwise required by the applicable regulatory body. See 
Note 10 for additional information.

Leases

Duke Energy determines if an arrangement is a lease at contract inception 

based on whether the arrangement involves the use of a physically distinct 
identified asset and whether Duke Energy has the right to obtain substantially 
all of the economic benefits from the use of the asset throughout the period as 
well as the right to direct the use of the asset. As a policy election, Duke Energy 
does not evaluate arrangements with initial contract terms of less than one year 
as leases. 

Operating leases are included in Operating lease ROU assets, net, Other 
current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. 
Finance leases are included in Property, plant and equipment, Current maturities of 
long-term debt and Long-Term Debt on the Consolidated Balance Sheets.

For lessee and lessor arrangements, Duke Energy has elected a policy to 
not separate lease and non-lease components for all asset classes. For lessor 
arrangements, lease and non-lease components are only combined under one 
arrangement and accounted for under the lease accounting framework if the 
non-lease components are not the predominant component of the arrangement 
and the lease component would be classified as an operating lease.

Nuclear Fuel

Nuclear fuel is classified as Property, Plant and Equipment on the 

Consolidated Balance Sheets. 

Nuclear fuel in the front-end fuel processing phase is considered work 
in progress and not amortized until placed in service. Amortization of nuclear 
fuel is included within Fuel used in electric generation and purchased power on 
the Consolidated Statements of Operations. Amortization is recorded using the 
units-of-production method.

Allowance for Funds Used During Construction and Interest Capitalized

For regulated operations, the debt and equity costs of financing the 
construction of property, plant and equipment are reflected as AFUDC and 
capitalized as a component of the cost of property, plant and equipment. AFUDC 
equity is reported on the Consolidated Statements of Operations as non-cash 
income in Other income and expenses, net. AFUDC debt is reported as a non-
cash offset to Interest Expense. After construction is completed, the Duke Energy 
Registrants are permitted to recover these costs through their inclusion in rate 
base and the corresponding subsequent depreciation or amortization of those 
regulated assets.

AFUDC equity, a permanent difference for income taxes, reduces the ETR 

when capitalized and increases the ETR when depreciated or amortized. See 
Note 23 for additional information.

For nonregulated operations, interest is capitalized during the 

construction phase with an offsetting non-cash credit to Interest Expense on the 
Consolidated Statements of Operations.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Asset Retirement Obligations

AROs are recognized for legal obligations associated with the retirement 

of property, plant and equipment. Substantially all AROs are related to regulated 
operations. When recording an ARO, the present value of the projected liability 
is recognized in the period in which it is incurred, if a reasonable estimate of 
fair value can be made. The liability is accreted over time. For operating plants, 
the present value of the liability is added to the cost of the associated asset and 
depreciated over the remaining life of the asset. For retired plants, the present 
value of the liability is recorded as a regulatory asset unless determined not to 
be probable of recovery.

The present value of the initial obligation and subsequent updates are 
based on discounted cash flows, which include estimates regarding timing of 
future cash flows, selection of discount rates and cost escalation rates, among 
other factors. These estimates are subject to change. Depreciation expense is 
adjusted prospectively for any changes to the carrying amount of the associated 
asset. The Duke Energy Registrants receive amounts to fund the cost of the 
ARO for regulated operations through a combination of regulated revenues and 
earnings on the NDTF. As a result, amounts recovered in regulated revenues, 
earnings on the NDTF, accretion expense and depreciation of the associated 
asset are netted and deferred as a regulatory asset or liability.

Accounts Payable

During 2020, Duke Energy established a supply chain finance program 
(the “program”) with a global financial institution. The program is voluntary and 
allows Duke Energy suppliers, at their sole discretion, to sell their receivables 
from Duke Energy to the financial institution at a rate that leverages Duke 
Energy’s credit rating and, which may result in favorable terms compared to the 
rate available to the supplier on their own credit rating. Suppliers participating 
in the program, determine at their sole discretion which invoices they will sell 
to the financial institution. Suppliers’ decisions on which invoices are sold do 
not impact Duke Energy’s payment terms, which are based on commercial 
terms negotiated between Duke Energy and the supplier regardless of program 
participation. The commercial terms negotiated between Duke Energy and its 
suppliers are consistent regardless of whether the supplier elects to participate 
in the program. Duke Energy does not issue any guarantees with respect to the 
program and does not participate in negotiations between suppliers and the 
financial institution. Duke Energy does not have an economic interest in the 
supplier’s decision to participate in the program and receives no interest, fees 
or other benefit from the financial institution based on supplier participation in 
the program. 

At December 31, 2020, $15 million, $1 million and $14 million of the 

outstanding Accounts payable balance for Duke Energy, Duke Energy Ohio and 
Piedmont, respectively, was sold to the financial institution by our suppliers. 
Suppliers invoices sold to the financial institution under the program totaled 
$45 million, $9 million and $36 million for the year ended December 31, 
2020, for Duke Energy, Duke Energy Ohio and Piedmont, respectively. All 
activity related to amounts due to suppliers who elected to participate in the 
program are included within Net cash provided by operating activities on the 
Consolidated Statements of Cash Flows. 

Revenue Recognition

Duke Energy recognizes revenue as customers obtain control of promised 

goods and services in an amount that reflects consideration expected in 
exchange for those goods or services. Generally, the delivery of electricity 

and natural gas results in the transfer of control to customers at the time the 
commodity is delivered and the amount of revenue recognized is equal to the 
amount billed to each customer, including estimated volumes delivered when 
billings have not yet occurred. See Note 18 for further information.

Derivatives and Hedging

Derivative and non-derivative instruments may be used in connection 
with commodity price and interest rate activities, including swaps, futures, 
forwards and options. All derivative instruments, except those that qualify for 
the NPNS exception, are recorded on the Consolidated Balance Sheets at fair 
value. Qualifying derivative instruments may be designated as either cash 
flow hedges or fair value hedges. Other derivative instruments (undesignated 
contracts) either have not been designated or do not qualify as hedges. The 
effective portion of the change in the fair value of cash flow hedges is recorded 
in AOCI. The effective portion of the change in the fair value of a fair value hedge 
is offset in net income by changes in the hedged item. For activity subject to 
regulatory accounting, gains and losses on derivative contracts are reflected as 
regulatory assets or liabilities and not as other comprehensive income or current 
period income. As a result, changes in fair value of these derivatives have no 
immediate earnings impact.

Formal documentation, including transaction type and risk management 
strategy, is maintained for all contracts accounted for as a hedge. At inception 
and at least every three months thereafter, the hedge contract is assessed to 
see if it is highly effective in offsetting changes in cash flows or fair values of 
hedged items.

See Note 14 for further information.

Captive Insurance Reserves

Duke Energy has captive insurance subsidiaries that provide coverage, 
on an indemnity basis, to the Subsidiary Registrants as well as certain third 
parties, on a limited basis, for financial losses, primarily related to property, 
workers’ compensation and general liability. Liabilities include provisions 
for estimated losses incurred but not reported (IBNR), as well as estimated 
provisions for known claims. IBNR reserve estimates are primarily based upon 
historical loss experience, industry data and other actuarial assumptions. 
Reserve estimates are adjusted in future periods as actual losses differ from 
experience.

Duke Energy, through its captive insurance entities, also has reinsurance 

coverage with third parties for certain losses above a per occurrence and/or 
aggregate retention. Receivables for reinsurance coverage are recognized when 
realization is deemed probable.

Unamortized Debt Premium, Discount and Expense 

Premiums, discounts and expenses incurred with the issuance of 
outstanding long-term debt are amortized over the term of the debt issue. The 
gain or loss on extinguishment associated with refinancing higher-cost debt 
obligations in the regulated operations is amortized over the remaining life of 
the original instrument. Amortization expense is recorded as Interest Expense 
in the Consolidated Statements of Operations and is reflected as Depreciation, 
amortization and accretion within Net cash provided by operating activities on 
the Consolidated Statements of Cash Flows.

Premiums, discounts and expenses are presented as an adjustment to 
the carrying value of the debt amount and included in Long-Term Debt on the 
Consolidated Balance Sheets presented.

114

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Preferred Stock

Preferred stock is reviewed to determine the appropriate balance sheet 
classification and embedded features, such as call options, are evaluated to 
determine if they should be bifurcated and accounted for separately. Costs 
directly related to the issuance of preferred stock is recorded as a reduction of 
the proceeds received. The liability for the dividend is recognized when declared. 
The accumulated dividends on the cumulative preferred stock is recognized to 
net income available to Duke Energy Corporation in the EPS calculation. See 
Note 19 for further information.

Loss Contingencies and Environmental Liabilities

Contingent losses are recorded when it is probable a loss has occurred 

and can be reasonably estimated. When a range of the probable loss exists and 
no amount within the range is a better estimate than any other amount, the 
minimum amount in the range is recorded. Unless otherwise required by GAAP, 
legal fees are expensed as incurred.

Environmental liabilities are recorded on an undiscounted basis when 
environmental remediation or other liabilities become probable and can be 
reasonably estimated. Environmental expenditures related to past operations 
that do not generate current or future revenues are expensed. Environmental 
expenditures related to operations that generate current or future revenues are 
expensed or capitalized, as appropriate. Certain environmental expenditures 
receive regulatory accounting treatment and are recorded as regulatory assets.

See Notes 3 and 4 for further information.

Pension and Other Post-Retirement Benefit Plans

Duke Energy maintains qualified, non-qualified and other post-retirement 

benefit plans. Eligible employees of the Subsidiary Registrants participate in 
the respective qualified, non-qualified and other post-retirement benefit plans 
and the Subsidiary Registrants are allocated their proportionate share of benefit 
costs. See Note 22 for further information, including significant accounting 
policies associated with these plans.

Severance and Special Termination Benefits

Duke Energy has severance plans under which in general, the longer a 
terminated employee worked prior to termination the greater the amount of 
severance benefits. A liability for involuntary severance is recorded once an 
involuntary severance plan is committed to by management if involuntary 
severances are probable and can be reasonably estimated. For involuntary 
severance benefits incremental to its ongoing severance plan benefits, the fair 
value of the obligation is expensed at the communication date if there are no 
future service requirements or over the required future service period. Duke 
Energy also offers special termination benefits under voluntary severance 
programs. Special termination benefits are recorded immediately upon employee 
acceptance absent a significant retention period. Otherwise, the cost is recorded 
over the remaining service period. Employee acceptance of voluntary severance 
benefits is determined by management based on the facts and circumstances of 
the benefits being offered. See Note 20 for further information.

Guarantees

If necessary, liabilities are recognized at the time of issuance or material 

modification of a guarantee for the estimated fair value of the obligation it 
assumes. Fair value is estimated using a probability weighted approach. The 
obligation is reduced over the term of the guarantee or related contract in a 
systematic and rational method as risk is reduced. Duke Energy recognizes 

a liability for the best estimate of its loss due to the nonperformance of the 
guaranteed party. This liability is recognized at the inception of a guarantee and 
is updated periodically. See Note 7 for further information.

Stock-Based Compensation

Stock-based compensation represents costs related to stock-based 

awards granted to employees and Board of Directors members. Duke Energy 
recognizes stock-based compensation based upon the estimated fair value of 
awards, net of estimated forfeitures at the date of issuance. The recognition 
period for these costs begins at either the applicable service inception date or 
grant date and continues throughout the requisite service period. Compensation 
cost is recognized as expense or capitalized as a component of property, plant 
and equipment. See Note 21 for further information.

Income Taxes

Duke Energy and its subsidiaries file a consolidated federal income 

tax return and other state and foreign jurisdictional returns. The Subsidiary 
Registrants are parties to a tax-sharing agreement with Duke Energy. Income 
taxes recorded represent amounts the Subsidiary Registrants would incur 
as separate C-Corporations. Deferred income taxes have been provided for 
temporary differences between GAAP and tax bases of assets and liabilities 
because the differences create taxable or tax-deductible amounts for future 
periods. ITCs associated with regulated operations are deferred and amortized 
as a reduction of income tax expense over the estimated useful lives of the 
related properties. For ITCs associated with nonregulated operations see 
“Accounting for Renewable Energy Tax Credits.”

Accumulated deferred income taxes are valued using the enacted tax rate 

expected to apply to taxable income in the periods in which the deferred tax 
asset or liability is expected to be settled or realized. In the event of a change in 
tax rates, deferred tax assets and liabilities are remeasured as of the enactment 
date of the new rate. To the extent that the change in the value of the deferred 
tax represents an obligation to customers, the impact of the remeasurement is 
deferred to a regulatory liability. Remaining impacts are recorded in income from 
continuing operations. Duke Energy’s results of operations could be impacted if 
the estimate of the tax effect of reversing temporary differences is not reflective 
of actual outcomes, is modified to reflect new developments or interpretations of 
the tax law, revised to incorporate new accounting principles, or changes in the 
expected timing or manner of a reversal.

Tax-related interest and penalties are recorded in Interest Expense and 
Other Income and Expenses, net in the Consolidated Statements of Operations.

See Note 23 for further information.

Accounting for Renewable Energy Tax Credits

When Duke Energy receives ITCs on wind or solar facilities associated with 
its nonregulated operations, it reduces the basis of the property recorded on the 
Consolidated Balance Sheets by the amount of the ITC and, therefore, the ITC 
benefit is ultimately recognized in the statement of operations through reduced 
depreciation expense. Additionally, certain tax credits and government grants 
result in an initial tax depreciable base in excess of the book carrying value by 
an amount equal to one half of the ITC. Deferred tax benefits are recorded as a 
reduction to income tax expense in the period that the basis difference is created.
When Duke Energy receives ITCs on wind or solar facilities associated 
with its regulated operations, the ITC is deferred and amortized as a reduction of 
income tax expense over the estimated useful lives of the related properties.

Duke Energy receives PTCs on wind facilities that are recognized as electricity 

is produced and records related amounts as a reduction of income tax expense.

115

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Excise Taxes

Certain excise taxes levied by state or local governments are required to 

be paid even if not collected from the customer. These taxes are recognized on a 
gross basis. Taxes for which Duke Energy operates merely as a collection agent 
for the state and local government are accounted for on a net basis. Excise taxes 
accounted for on a gross basis within both Operating Revenues and Property and 
other taxes in the Consolidated Statements of Operations were as follows.

(in millions)

Duke Energy 
Duke Energy Carolinas 
Progress Energy 
Duke Energy Progress 
Duke Energy Florida 
Duke Energy Ohio 
Duke Energy Indiana 
Piedmont

Years Ended December 31,

2020

2019

2018

$ 415 
43 
249 
26 
223 
96 
25 
2 

$ 421
39 
256 
21 
235 
101 
23 
2 

$ 405 
35 
241 
19 
222 
105 
22 
2 

Dividend Restrictions and Unappropriated Retained Earnings

Duke Energy does not have any current legal, regulatory or other 
restrictions on paying common stock dividends to shareholders. However, 
if Duke Energy were to defer dividend payments on the preferred stock, the 
declaration of common stock dividends would be prohibited. See Note 19 for 
more information. Additionally, as further described in Note 3, Duke Energy 
Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Indiana and 
Piedmont have restrictions on paying dividends or otherwise advancing funds 

to Duke Energy due to conditions established by regulators in conjunction 
with merger transaction approvals. At December 31, 2020, and 2019, an 
insignificant amount of Duke Energy’s consolidated Retained earnings balance 
represents undistributed earnings of equity method investments.

New Accounting Standards

The following new accounting standard was adopted by Duke Energy 

Registrants in 2020.

Credit Losses. In June 2016, the FASB issued new accounting guidance 
for credit losses. Duke Energy adopted the new accounting guidance for credit 
losses effective January 1, 2020, using the modified retrospective method of 
adoption, which does not require restatement of prior year results. Duke Energy 
did not adopt any practical expedients.

Duke Energy recognizes allowances for credit losses based on 
management’s estimate of losses expected to be incurred over the lives of 
certain assets or guarantees. Management monitors credit quality, changes 
in expected credit losses and the appropriateness of the allowance for credit 
losses on a forward-looking basis. Management reviews the risk of loss 
periodically as part of the existing assessment of collectability of receivables.

Duke Energy reviews the credit quality of its counterparties as part of its 
regular risk management process and requires credit enhancements, such as 
deposits or letters of credit, as appropriate and as allowed by regulators.
Duke Energy recorded cumulative effects of changes in accounting 
principles related to the adoption of new credit loss standard, for allowances 
and credit losses of trade and other receivables, insurance receivables 
and financial guarantees. These amounts are included in the Condensed 
Consolidated Balance Sheets in Receivables, Receivables of VIEs, Other 
Noncurrent Assets and Other Noncurrent Liabilities. See Notes 7 and 18 for 
more information.

Duke Energy recorded an adjustment for the cumulative effect of a change in accounting principle due to the adoption of this standard on January 1, 2020, as 

shown in the table below:

(in millions) 

Total pretax impact to Retained Earnings

The following new accounting standard has been issued but not yet 

adopted by the Duke Energy Registrants as of December 31, 2020.

Reference Rate Reform. In March 2020, the FASB issued new 
accounting guidance for reference rate reform. This guidance is elective and 
provides expedients to facilitate financial reporting for the anticipated transition 
away from the London Inter-bank Offered Rate (LIBOR) and other interbank 
reference rates by the end of 2021. The optional expedients are effective for 
modification of existing contracts or new arrangements executed between March 
12, 2020, through December 31, 2022.

December 31, 2020

Duke
Energy

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida Piedmont

$

120 

$

16 

$

2 

$

1 

$

1 

$

1

Duke Energy has variable-rate debt and manages interest rate risk by 
entering into financial contracts including interest rate swaps that are generally 
indexed to LIBOR. Impacted financial arrangements extending beyond 2021 may 
require contractual amendment or termination to fully adapt to a post-LIBOR 
environment. Duke Energy is assessing these financial arrangements and 
is evaluating the use of optional expedients outlined in the new accounting 
guidance. Alternative index provisions are also being assessed and incorporated 
into new financial arrangements that extend beyond 2021. The full outcome of 
the transition away from LIBOR cannot be determined at this time, but is not 
expected to have a material impact on the financial statements.

116

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)2.  BUSINESS SEGMENTS

Reportable segments are determined based on information used by 
the chief operating decision-maker in deciding how to allocate resources and 
evaluate the performance of the business. Duke Energy evaluates segment 
performance based on segment income. Segment income is defined as income 
from continuing operations net of income attributable to noncontrolling interests 
and preferred stock dividends. Segment income, as discussed below, includes 
intercompany revenues and expenses that are eliminated on the Consolidated 
Financial Statements. Certain governance costs are allocated to each segment. 
In addition, direct interest expense and income taxes are included in segment 
income.

Products and services are sold between affiliate companies and 

reportable segments of Duke Energy at cost. Segment assets as presented in the 
tables that follow exclude all intercompany assets.

Duke Energy

Duke Energy’s segment structure includes the following segments: Electric 

Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial 
Renewables.

The Electric Utilities and Infrastructure segment includes Duke Energy’s 

regulated electric utilities in the Carolinas, Florida and the Midwest. The 
regulated electric utilities conduct operations through the Subsidiary Registrants 
that are substantially all regulated and, accordingly, qualify for regulatory 
accounting treatment. Electric Utilities and Infrastructure also includes Duke 
Energy’s electric transmission infrastructure investments.

The Gas Utilities and Infrastructure segment includes Piedmont, Duke 
Energy’s natural gas local distribution companies in Ohio and Kentucky, and 
Duke Energy’s natural gas storage and midstream pipeline investments. Gas 
Utilities and Infrastructure’s operations are substantially all regulated and, 
accordingly, qualify for regulatory accounting treatment.

The Commercial Renewables segment is primarily comprised of nonregulated 

utility-scale wind and solar generation assets located throughout the U.S. 

The remainder of Duke Energy’s operations is presented as Other, which 

is primarily comprised of interest expense on holding company debt, unallocated 
corporate costs and Duke Energy’s wholly owned captive insurance company, 
Bison. Other also includes Duke Energy’s interest in NMC. See Note 12 for 
additional information on the investment in NMC.

Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.

(in millions)

Unaffiliated Revenues
Intersegment Revenues

Total Revenues

Interest Expense
Depreciation and amortization
Equity in earnings (losses) of unconsolidated affiliates
Income tax expense (benefit)
Segment income (loss)(a)(b)(c)
Less noncontrolling interest
Add back preferred stock dividend
Income from discontinued operations, net of tax
Net income
Capital investments expenditures and acquisitions
Segment assets

Year Ended December 31, 2020

Electric
Utilities and
Infrastructure

Gas
Utilities and
Infrastructure

Commercial
Renewables

$ 21,687 
33 

$ 21,720 

$

1,320 
4,068 
(1)
340 
2,669 

$ 1,653 
95 

$ 1,748 

$

135 
258 
(2,017)
(349)
(1,266)

$

$

$

502 
— 

502 

66 
199 
— 
(65)
286 

Total
Reportable
Segments

$ 23,842 
128 

$ 23,970 

$

1,521 
4,525 
(2,018)
(74)
1,689 

$

$

26 
71 

97 

$ 657 
209 
13 
(162)
(426)

Other

Eliminations

Total

$ —  $ 23,868 
— 

(199)

$ (199) $ 23,868 

$

(16) $
(29)
— 
— 
— 

2,162 
4,705 
(2,005)
(236)
1,263 
295 
107 
7 
1,082 
$
$ — $ 10,421 

— 

162,388 

$

7,629 

138,225 

$ 1,309 

13,849 

$ 1,219 

6,716 

$ 10,157 

$ 264 

158,790 

3,598 

(a)  Electric Utilities and Infrastructure includes $948 million of Impairment charges and a reversal of $152 million included in Regulated electric operating revenue related to the CCR Settlement Agreement filed with the 

NCUC. Additionally, Electric Utilities and Infrastructure includes $19 million of Impairment charges related to the Clemson University Combined Heat and Power Plant, $5 million of Impairment charges related to the gas 
pipeline assets and $16 million of shareholder contributions within Operations, maintenance and other related to Duke Energy Carolinas’ and Duke Energy Progress’ 2019 North Carolina rate cases. See Note 3 for additional 
information.

(b)  Gas Utilities and Infrastructure includes $2.1 billion recorded within Equity in (losses) earnings of unconsolidated affiliates and $7 million of Impairment charges related to gas pipeline investments. See Notes 3 and 12 for 

additional information.

(c)  Other includes a $98 million reversal of 2018 severance costs due to a partial settlement in the Duke Energy Carolinas’ 2019 North Carolina rate case. See Note 3 and 20 for additional information.

117

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)(in millions)

Unaffiliated Revenues
Intersegment Revenues

Total Revenues

Interest Expense
Depreciation and amortization
Equity in earnings (losses) of unconsolidated affiliates
Income tax expense (benefit)
Segment income (loss)(a)(b)
Less noncontrolling interest
Add back preferred stock dividend
Loss from discontinued operations, net of tax
Net income
Capital investments expenditures and acquisitions
Segment assets

Year Ended December 31, 2019

Electric
Utilities and
Infrastructure

Gas
Utilities and
Infrastructure

Commercial
Renewables

$ 22,798
33

$ 22,831

$

1,345
3,951
9
785
3,536

$ 1,770
96

$ 1,866

$

117
256
114
22
432

$

$

$

487
—

487

95
168
(4)
(115)
198

Total
Reportable
Segments

$ 25,055
129

$ 25,184

$

1,557
4,375
119
692
4,166

$

$

$

24
71

95

705
178
43
(173)
(452)

Other

Eliminations

Total

$ — $ 25,079
—

(200)

$ (200) $ 25,079

$

(58) $
(5)
—
—
—

2,204
4,548
162
519
3,714
177
41
(7)
3,571
$
$ — $ 11,446
158,838

188

$ — $ 24,521
—

(199)

$ (199) $ 24,521

$

(45) $
(1)
—
—
—

$
$ — $
188

2,094
4,074
83
448
2,647
22
19
2,644
9,668
145,392

Other

Eliminations

Total

(a)  Electric Utilities and Infrastructure includes a $27 million reduction of a prior year impairment at Citrus County CC related to the plant’s cost cap. See Note 3 for additional information.
(b)  Gas Utilities and Infrastructure includes an after-tax impairment charge of $19 million for the remaining investment in Constitution. See Note 12 for additional information.

$

8,263
135,561

$ 1,539
13,921

$ 1,423
6,020

$ 11,225
155,502

$

221
3,148

(in millions)

Unaffiliated Revenues
Intersegment Revenues

Total Revenues

Interest Expense
Depreciation and amortization
Equity in earnings (losses) of unconsolidated affiliates
Income tax expense (benefit)(a)
Segment income (loss)(b)(c)(d)(e)
Less noncontrolling interest
Income from discontinued operations, net of tax
Net income
Capital investments expenditures and acquisitions
Segment assets

Year Ended December 31, 2018

Electric
Utilities and
Infrastructure

Gas
Utilities and
Infrastructure

Commercial
Renewables

$ 22,242
31

$ 22,273

$

1,288
3,523
5
799
3,058

$ 1,783
98

$ 1,881

$

106
245
27
78
274

$

$

$

477
—

477

88
155
(1)
(147)
9

Total
Reportable
Segments

$ 24,502
129

$ 24,631

$

1,482
3,923
31
730
3,341

$

$

$

19
70

89

657
152
52
(282)
(694)

$

8,086
125,364

$ 1,133
12,361

$

193
4,204

$

9,412
141,929

$

256
3,275

(a)  All segments include adjustments to the December 31, 2017, estimate of the income tax effects of the Tax Act. Electric Utilities and Infrastructure includes a $24 million expense, Gas Utilities and Infrastructure includes a  

$1 million expense, Commercial Renewables includes a $3 million benefit and Other includes a $2 million benefit. See Note 23 for additional information.

(b)  Electric Utilities and Infrastructure includes after-tax regulatory and legislative impairment charges of $202 million related to rate case orders, settlements or other actions of regulators or legislative bodies and an after-tax 

impairment charge of $46 million related to the Citrus County CC at Duke Energy Florida. See Note 3 for additional information.

(c)  Gas Utilities and Infrastructure includes an after-tax impairment charge of $42 million for the investment in Constitution. See Note 12 for additional information.
(d)  Commercial Renewables includes an impairment charge of $91 million, net of $2 million Noncontrolling interests, related to goodwill. See Note 11 for additional information.
(e)  Other includes $65 million of after-tax costs to achieve the Piedmont merger, $144 million of after-tax severance charges related to a companywide initiative and an $82 million after-tax loss on the sale of Beckjord described 

below. For additional information, see Note 1 for the Piedmont merger and Note 20 for severance charges.

118

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)In February 2018, Duke Energy sold Beckjord, a nonregulated facility retired during 2014, and recorded a pretax loss of $106 million within Gains (Losses) on 
Sales of Other Assets and Other, net and $1 million within Operation, maintenance and other on Duke Energy’s Consolidated Statements of Operations for the year 
ended December 31, 2018. The sale included the transfer of coal ash basins and other real property and indemnification from any and all potential future claims 
related to the property, whether arising under environmental laws or otherwise.

Geographical Information

Substantially all assets and revenues from continuing operations are within the U.S.

Major Customers

For the year ended December 31, 2020, revenues from one customer of Duke Energy Progress are $553 million. Duke Energy Progress has one reportable 

segment, Electric Utilities and Infrastructure. No other Subsidiary Registrant has an individual customer representing more than 10% of its revenues.

Products and Services

The following table summarizes revenues of the reportable segments by type.

(in millions)

2020
Electric Utilities and Infrastructure
Gas Utilities and Infrastructure
Commercial Renewables

Total Reportable Segments

2019
Electric Utilities and Infrastructure
Gas Utilities and Infrastructure
Commercial Renewables

Total Reportable Segments

2018
Electric Utilities and Infrastructure
Gas Utilities and Infrastructure
Commercial Renewables

Total Reportable Segments

Duke Energy Ohio

Retail
Electric

Wholesale
Electric

Retail
Natural Gas

Other

Total
Revenues

$ 18,898 
— 
— 

$ 18,898 

$ 19,745 
— 
— 

$ 19,745 

$ 19,013
—
—

$ 19,013

$

$

$

$

$

$

1,878 
— 
434 

2,312 

2,231
—
389

2,620

2,345
—
375

2,720

$

$

$

$

$

$

— 
1,691 
— 

1,691 

—
1,782
—

1,782

—
1,817
—

1,817

$

944 
57 
68 

$ 1,069 

$

855
84
98

$ 1,037

$

915
64
102

$ 1,081

$ 21,720 
1,748 
502 

$ 23,970 

$ 22,831
1,866
487

$ 25,184

$ 22,273
1,881
477

$ 24,631

Duke Energy Ohio has two reportable segments, Electric Utilities and Infrastructure and Gas Utilities and Infrastructure.
Electric Utilities and Infrastructure transmits and distributes electricity in portions of Ohio and generates, distributes and sells electricity in portions of Northern 

Kentucky. Gas Utilities and Infrastructure transports and sells natural gas in portions of Ohio and Northern Kentucky. Both reportable segments conduct operations 
primarily through Duke Energy Ohio and its wholly owned subsidiary, Duke Energy Kentucky. The remainder of Duke Energy Ohio’s operations is presented as Other. 

119

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)All Duke Energy Ohio assets and revenues from continuing operations are within the U.S.

(in millions)

Total revenues

Interest expense
Depreciation and amortization
Income tax expense (benefit)
Segment income (loss)/Net income
Capital expenditures
Segment assets

(in millions)

Total revenues

Interest expense
Depreciation and amortization
Income tax expense (benefit)
Segment income (loss)
Loss from discontinued operations, net of tax
Net income
Capital expenditures
Segment assets

Year Ended December 31, 2020

Electric
Utilities and
Infrastructure

Gas
Utilities and
Infrastructure

Total
Reportable
Segments

$ 1,405 

$

$

85 
200 
19 
162 
548 
6,615 

$

$

$

453 

17 
78 
26 
96 
286 
3,380 

$

$

$

1,858 

102 
278 
45 
258 
834 
9,995 

Other

$ — 

$ — 
— 
(2)
(6)
$ — 
32 

Eliminations

Total

$ — 

$ 1,858 

$ — 
— 
— 
— 
$ — 
(2)

$

$

102 
278 
43 
252 
834 
10,025 

Year Ended December 31, 2019

Electric
Utilities and
Infrastructure

$ 1,456

$

80
182
20
159

$

680
6,188

Gas
Utilities and
Infrastructure

Total
Reportable
Segments

$

$

484

29
83
21
85

$

272
3,116

$

$

$

Other

$ —

$ —
—
(1)
(5)

1,940

109
265
41
244

952
9,304

$ —
34

Eliminations

Total

$ — $ 1,940

$ — $
—
—
—

109
265
40
239
(1)
238
952
— 9,338

$
$ — $

(in millions)

Total revenues

Interest expense
Depreciation and amortization
Income tax expense (benefit)
Segment income (loss)/Net Income(a)
Capital expenditures
Segment assets

(a)  Other includes the loss on the sale of Beckjord, see discussion above.

Year Ended December 31, 2018

Electric
Utilities and
Infrastructure

Gas
Utilities and
Infrastructure

Total
Reportable
Segments

$ 1,450

$

$

67
183
47
186
655
5,643

$

$

$

506

24
85
24
93
172
2,874

$

$

$

1,956

91
268
71
279
827
8,517

Other

$

1

$

1
—
(28)
(103)
$ —
38

Eliminations

Total

$ — $ 1,957

$ — $
—
—
—
$ — $

92
268
43
176
827
— 8,555

120

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)3.  REGULATORY MATTERS

REGULATORY ASSETS AND LIABILITIES

The Duke Energy Registrants record regulatory assets and liabilities that result from the ratemaking process. See Note 1 for further information.
The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate 

tables below for balances by individual registrant.

(in millions)

Regulatory Assets
AROs – coal ash
AROs – nuclear and other
Accrued pension and OPEB
Storm cost deferrals
Nuclear asset securitized balance, net
Debt fair value adjustment
Retired generation facilities
Post-in-service carrying costs (PISCC) and deferred operating expenses
Deferred asset – Lee and Harris COLA
Hedge costs deferrals
Advanced metering infrastructure (AMI)
Demand side management (DSM)/Energy Efficiency (EE)
Vacation accrual
Deferred fuel and purchased power
COR settlement
NCEMPA deferrals
Nuclear deferral
Derivatives – natural gas supply contracts
CEP deferral
Amounts due from customers
Qualifying facility contract buyouts
Customer connect project
Manufactured gas plant (MGP)
ABSAT, coal ash basin closure
Deferred pipeline integrity costs
Deferred severance charges
Incremental COVID-19 expenses
Other
Total regulatory assets

Less: current portion

Total noncurrent regulatory assets

Regulatory Liabilities
Net regulatory liability related to income taxes
Costs of removal
AROs – nuclear and other
Provision for rate refunds
Accrued pension and OPEB
Amounts to be refunded to customers
Deferred fuel and purchased power
Other 

Total regulatory liabilities 

Less: current portion 

Total noncurrent regulatory liabilities 

121

Duke Energy

Progress Energy

December 31,

December 31,

2020

2019

2020

2019

$ 3,408
754
2,317
1,102
991
950
417
402
356
351
311
288
221
213
128
124
123
122
117
110
107
105
104
98
92
86
76
589
14,062

1,641

$ 4,084
739
2,391
1,399
1,042
1,019
331
329
388
356
338
343
214
528
133
72
107
117
76
36
121
65
102
65
79
—
—
544
15,018

1,796

$1,357
685
875
893
991
—
363
51
32
148
102
241
42
162
33
124
35
—
—
—
107
55
—
27
—
29
23
158
6,533

$ 1,843
668
897
1,214
1,042
—
266
33
38
129
114
241
41
305
35
72
40
—
—
—
121
37
—
15
—
—
—
141
7,292

758

946

$12,421

$13,222

$5,775

$ 6,346

$ 7,368 
5,883 
1,512 
344 
177 
51 
18 
1,053 

$ 7,872 
5,756 
1,100 
370 
176 
34 
1 
739 

$2,411 
2,666 
— 
123 
— 
— 
— 
491 

$ 2,595
2,561 
— 
123 
— 
— 
1 
275 

16,406 

16,048 

5,691 

5,555 

1,377 

784 

640 

330 

$15,029

$15,264

$5,051

$ 5,225

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Descriptions of regulatory assets and liabilities summarized in the tables 
above and below follow. See tables below for recovery and amortization periods 
at the separate registrants.

AROs – coal ash. Represents deferred depreciation and accretion related 
to the legal obligation to close ash basins. The costs are deferred until recovery 
treatment has been determined. See Notes 1 and 9 for additional information.
AROs – nuclear and other. Represents regulatory assets or liabilities, 

including deferred depreciation and accretion, related to legal obligations 
associated with the future retirement of property, plant and equipment, 
excluding amounts related to coal ash. The AROs relate primarily to 
decommissioning nuclear power facilities. The amounts also include certain 
deferred gains and losses on NDTF investments. See Notes 1 and 9 for 
additional information. 

Accrued pension and OPEB. Accrued pension and OPEB represent 
regulatory assets and liabilities related to each of the Duke Energy Registrants’ 
respective shares of unrecognized actuarial gains and losses and unrecognized 
prior service cost and credit attributable to Duke Energy’s pension plans and 
OPEB plans. The regulatory asset or liability is amortized with the recognition 
of actuarial gains and losses and prior service cost and credit to net periodic 
benefit costs for pension and OPEB plans. The accrued pension and OPEB 
regulatory assets are expected to be recovered primarily over the average 
remaining service periods or life expectancies of employees covered by the 
benefit plans. See Note 22 for additional detail.

COR settlement. Represents approved COR settlements that are being 

amortized over the average remaining lives, at the time of approval, of the 
associated assets.

NCEMPA deferrals. Represents retail allocated cost deferrals and returns 

associated with the additional ownership interest in assets acquired from 
NCEMPA in 2015.

Nuclear deferral. Includes amounts related to levelizing nuclear plant 
outage costs, which allows for the recognition of nuclear outage expenses over 
the refueling cycle rather than when the outage occurs, resulting in the deferral 
of operations and maintenance costs associated with refueling.

Derivatives – natural gas supply contracts. Represents costs for 
certain long-dated, fixed quantity forward gas supply contracts, which are 
recoverable through PGA clauses.

CEP deferral. Represents deferred depreciation, PISCC and deferred 
property tax for Duke Energy Ohio Gas capital assets for the Capital Expenditure 
Program (CEP).

Amounts due from customers. Relates primarily to margin decoupling 

and IMR recovery mechanisms.

Qualifying facility contract buyouts. Represents termination payments 

for regulatory recovery through the capacity clause.

Customer connect project. Represents incremental operating expenses 

and carrying costs on deferred amounts related to the deployment of the new 
customer information system known as the Customer Connect Project. 

Storm cost deferrals. Represents deferred incremental costs incurred 

MGP. Represents remediation costs incurred at former MGP sites and the 

related to major weather-related events.

Nuclear asset securitized balance, net. Represents the balance 

associated with Crystal River Unit 3 retirement approved for recovery by the 
FPSC on September 15, 2015, and the upfront financing costs securitized in 
2016 with issuance of the associated bonds. The regulatory asset balance is net 
of the AFUDC equity portion.

Debt fair value adjustment. Purchase accounting adjustments recorded 

to state the carrying value of Progress Energy and Piedmont at fair value in 
connection with the 2012 and 2016 mergers, respectively. Amount is amortized 
over the life of the related debt.

Retired generation facilities. Represents amounts to be recovered for 

facilities that have been retired and are probable of recovery.

Post-in-service carrying costs (PISCC) and deferred operating 
expenses. Represents deferred depreciation and operating expenses as well as 
carrying costs on the portion of capital expenditures placed in service but not yet 
reflected in retail rates as plant in service.

Deferred asset – Lee and Harris COLA. Represents deferred costs 

incurred for the canceled Lee and Harris nuclear projects.

Hedge costs deferrals. Amounts relate to unrealized gains and losses 
on derivatives recorded as a regulatory asset or liability, respectively, until the 
contracts are settled.

AMI. Represents deferred costs related to the installation of AMI meters 
and remaining net book value of non-AMI meters to be replaced at Duke Energy 
Carolinas, net book value of existing meters at Duke Energy Florida, Duke 
Energy Progress and Duke Energy Ohio and future recovery of net book value 
of electromechanical meters that have been replaced with AMI meters at Duke 
Energy Indiana.

DSM/EE. Deferred costs related to various DSM and EE programs 

recoverable through various mechanisms.

Vacation accrual. Represents vacation entitlement, which is generally 

recovered in the following year.

Deferred fuel and purchased power. Represents certain energy-
related costs that are recoverable or refundable as approved by the applicable 
regulatory body.

deferral of costs to be incurred at Duke Energy Ohio’s East End and West End 
sites.

ABSAT, coal ash basin closure. Represents deferred depreciation and 

returns associated with Ash Basin Strategic Action Team (ABSAT) capital assets 
related to converting the ash handling system from wet to dry.

Deferred pipeline integrity costs. Represents pipeline integrity 
management costs in compliance with federal regulations recovered through a 
rider mechanism.

Deferred severance charges. Represents costs incurred for employees 

separation from Duke Energy.

Incremental COVID-19 expenses. Represents incremental costs 
related to ensuring continuity and quality of service in a safe manner during the 
COVID-19 pandemic. 

Net regulatory liability related to income taxes. Amounts for all 
registrants include regulatory liabilities related primarily to impacts from the Tax 
Act. See Note 23 for additional information. Amounts have no immediate impact 
on rate base as regulatory assets are offset by deferred tax liabilities.

Costs of removal. Represents funds received from customers to cover 
the future removal of property, plant and equipment from retired or abandoned 
sites as property is retired. Also includes certain deferred gains on NDTF 
investments.

Provisions for rate refunds. Represents estimated amounts due to 

customers based on recording interim rates subject to refund.

Amounts to be refunded to customers. Represents required rate 

reductions to retail customers by the applicable regulatory body.

RESTRICTIONS ON THE ABILITY OF CERTAIN SUBSIDIARIES TO MAKE 
 DIVIDENDS, ADVANCES AND LOANS TO DUKE ENERGY

As a condition to the approval of merger transactions, the NCUC, PSCSC, 

PUCO, KPSC and IURC imposed conditions on the ability of Duke Energy 
Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Kentucky, 
Duke Energy Indiana and Piedmont to transfer funds to Duke Energy through 
loans or advances, as well as restricted amounts available to pay dividends to 

122

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy. Certain subsidiaries may transfer funds to the Parent by obtaining 
approval of the respective state regulatory commissions. These conditions 
imposed restrictions on the ability of the public utility subsidiaries to pay cash 
dividends as discussed below.

Duke Energy Progress and Duke Energy Florida also have restrictions 

imposed by their first mortgage bond indentures, which in certain 
circumstances, limit their ability to make cash dividends or distributions on 
common stock. Amounts restricted as a result of these provisions were not 
material at December 31, 2020.

Duke Energy Indiana has certain dividend restrictions as a result of the 

agreement entered in January 2021 to sell a minority interest to GIC. Duke 
Energy Indiana will not declare a dividend prior to the first closing, which is 
expected to be completed in the second quarter of 2021, and will declare 
dividends between the first closing and the second closing, which is required 
to be completed no later than January 2023, in accordance with the sale 
agreement. See additional information in Note 1.

Additionally, certain other subsidiaries of Duke Energy have restrictions 

on their ability to dividend, loan or advance funds to Duke Energy due to specific 
legal or regulatory restrictions, including, but not limited to, minimum working 
capital and tangible net worth requirements.

The restrictions discussed below were not a material amount of Duke 

Energy’s and Progress Energy’s net assets at December 31, 2020.

Duke Energy Carolinas

Duke Energy Carolinas must limit cumulative distributions subsequent to 
mergers to (i) the amount of retained earnings on the day prior to the closing of 
the mergers, plus (ii) any future earnings recorded.

Duke Energy Progress

Duke Energy Progress must limit cumulative distributions subsequent to 
the mergers between Duke Energy and Progress Energy and Duke Energy and 
Piedmont to (i) the amount of retained earnings on the day prior to the closing of 
the respective mergers, plus (ii) any future earnings recorded.

Duke Energy Ohio

Duke Energy Ohio will not declare and pay dividends out of capital or 
unearned surplus without the prior authorization of the PUCO. Duke Energy Ohio 
received FERC and PUCO approval to pay dividends from its equity accounts 
that are reflective of the amount that it would have in its retained earnings 
account had push-down accounting for the Cinergy merger not been applied to 
Duke Energy Ohio’s balance sheet. The conditions include a commitment from 
Duke Energy Ohio that equity, adjusted to remove the impacts of push-down 
accounting, will not fall below 30% of total capital.

Duke Energy Kentucky is required to pay dividends solely out of retained 

earnings and to maintain a minimum of 35% equity in its capital structure.

Duke Energy Indiana

Duke Energy Indiana must limit cumulative distributions subsequent to the 
merger between Duke Energy and Cinergy to (i) the amount of retained earnings 
on the day prior to the closing of the merger, plus (ii) any future earnings 
recorded. In addition, Duke Energy Indiana will not declare and pay dividends out 
of capital or unearned surplus without prior authorization of the IURC.

Piedmont

Piedmont must limit cumulative distributions subsequent to the 

acquisition of Piedmont by Duke Energy to (i) the amount of retained earnings on 
the day prior to the closing of the merger, plus (ii) any future earnings recorded.

123

RATE-RELATED INFORMATION

The NCUC, PSCSC, FPSC, IURC, PUCO, TPUC and KPSC approve rates for 
retail electric and natural gas services within their states. The FERC approves 
rates for electric sales to wholesale customers served under cost-based 
rates (excluding Ohio and Indiana), as well as sales of transmission service. 
The FERC also regulates certification and siting of new interstate natural gas 
pipeline projects.

Duke Energy Carolinas and Duke Energy Progress

2021 Coal Ash Settlement

On January 22, 2021, Duke Energy Carolinas and Duke Energy Progress 
entered into the Coal Combustion Residuals Settlement Agreement (the “CCR 
Settlement Agreement”) with the North Carolina Public Staff (Public Staff), the 
North Carolina Attorney General’s Office and the Sierra Club (collectively, the 
“Settling Parties”), which was filed with the NCUC on January 25, 2021. The 
CCR Settlement Agreement resolves all coal ash prudence and cost recovery 
issues in connection with 2019 rate cases filed by Duke Energy Carolinas and 
Duke Energy Progress with the NCUC, as well as the equitable sharing issue 
on remand from the 2017 Duke Energy Carolinas and Duke Energy Progress 
North Carolina rate cases as a result of the December 11, 2020, North Carolina 
Supreme Court opinion. The settlement also provides clarity on coal ash cost 
recovery in North Carolina for Duke Energy Carolinas and Duke Energy Progress 
through January 2030 and February 2030 (the “Term”), respectively.
Duke Energy Carolinas and Duke Energy Progress agreed not to 
seek recovery of approximately $1 billion of systemwide deferred coal ash 
expenditures, but will retain the ability to earn a debt and equity return during 
the amortization period, which shall be five years in the pending 2019 North 
Carolina rate cases and will be set by the NCUC in future rate case proceedings. 
The equity return and the amortization period on deferred coal ash costs under 
the 2017 Duke Energy Carolinas and Duke Energy Progress North Carolina rate 
cases will remain unaffected. The equity return on deferred coal ash costs under 
the 2019 North Carolina rate cases and future rate cases in North Carolina will 
be set at 150 basis points lower than the authorized return on equity then in 
effect, with a capital structure composed of 48% debt and 52% equity. Duke 
Energy Carolinas and Duke Energy Progress retain the ability to earn a full 
WACC return during the deferral period, which is the period from when costs are 
incurred until they are recovered in rates.

The Settling Parties agreed that execution by Duke Energy Carolinas and 

Duke Energy Progress of a settlement agreement between themselves and 
the NCDEQ dated December 31, 2019, (the “DEQ Settlement”) and the coal 
ash management plans included therein or subsequently approved by DEQ 
are reasonable and prudent. The Settling Parties retain the right to challenge 
the reasonableness and prudence of actions taken by Duke Energy Carolinas 
and Duke Energy Progress and costs incurred to implement the scope of work 
agreed upon in the DEQ Settlement, after February 1, 2020, and March 1, 
2020, for Duke Energy Carolinas and Duke Energy Progress, respectively. The 
Settling Parties further agreed to waive rights through the Term to challenge 
the reasonableness or prudence of Duke Energy Carolinas’ and Duke Energy 
Progress’ historical coal ash management practices, and to waive the right to 
assert any arguments that future coal ash costs, including financing costs, shall 
be shared between either company and customers through equitable sharing or 
any other rate base or return adjustment that shares the revenue requirement 
burden of coal ash costs not otherwise disallowed due to imprudence.

The Settling Parties agreed to a sharing arrangement for future coal ash 
insurance litigation proceeds between Duke Energy Carolinas and Duke Energy 
Progress and North Carolina customers, if achieved. 

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The settlement is subject to the review and approval of the NCUC. The 
Settling Parties requested an expedited review by the NCUC and anticipate an 
order on the pending 2019 North Carolina rate cases for Duke Energy Carolinas 
and Duke Energy Progress by the second quarter of 2021. On January 29, 2021, 
Duke Energy Carolinas and Duke Energy Progress filed joint motions with the 
Settling Parties seeking approval of the CCR Settlement Agreement, along with 
supporting testimony and exhibits from Duke Energy Carolinas and Duke Energy 
Progress. On February 5, 2021, the Public Staff filed testimony and exhibits 
supporting the CCR Settlement Agreement. 

As a result of the CCR Settlement Agreement, Duke Energy Carolinas and 
Duke Energy Progress recorded a pretax charge of approximately $454 million 
and $494 million, respectively, in the fourth quarter of 2020 to Impairment 
charges and a reversal of approximately $50 million and $102 million, 
respectively, to Regulated electric operating revenues on the respective 
Consolidated Statements of Operations.

COVID-19 Filings

North Carolina

On March 10, 2020, Governor Roy Cooper declared a state of emergency 

due to the COVID-19 pandemic. On March 19, 2020, the NCUC issued an 
order directing that utilities under its jurisdiction suspend disconnections 
for nonpayment of utility bills during the state of emergency and allow 
for customers to enter into payment arrangements to pay off arrearages 
accumulated during the state of emergency after the end of the state of 
emergency. Additionally, to help mitigate the financial impacts of the COVID-19 
pandemic on their customers, on March 19, 2020, Duke Energy Carolinas and 
Duke Energy Progress filed a request with the NCUC seeking authorization to 
waive: (1) any late payment charges incurred by a residential or nonresidential 
customer, effective March 21, 2020; (2) the application of fees for checks 
returned for insufficient funds for residential and nonresidential customers; 
(3) the reconnection charge when a residential or nonresidential customer 
seeks to have service restored for those customers whose service was recently 
disconnected for nonpayment and to work with customers regarding the other 
requirements to restore service, including re-establishment of credit; and (4) 
the fees and charges associated with the use of credit cards or debit cards to 
pay residential electric utility bills, effective March 21, 2020. The NCUC granted 
the companies’ request on March 20, 2020.

On July 29, 2020, the NCUC issued its Order Lifting Disconnection 

Moratorium and Allowing Collection of Arrearages Pursuant to Special 
Repayment Plans. The order contained the following: (1) public utilities may 
resume customer disconnections due to nonpayment for bills first rendered on 
or after September 1, 2020, after appropriate notice; (2) the late fee moratorium 
will continue through the end of the state of emergency or until further order 
of the Commission; (3) Duke Energy utilities may reinstate fees for checks 
returned for insufficient funds as well as transaction fees for use of credit cards 
or debit cards for bills first rendered on or after September 1, 2020; and (4) 
no sooner than September 1, 2020, the collection of past-due or delinquent 
accounts accrued up to and including August 31, 2020, may proceed subject to 
conditions. Duke Energy Carolinas and Duke Energy Progress resumed normal 
billing practices as of October 1, 2020, with the exception of the billing of late 
payment charges. Customers were notified of the resumption of normal billing 
practices, the option of deferred payment arrangements and where to find 
assistance, if necessary. Service disconnections for nonpayment for residential 
customers resumed on November 2, 2020.

Duke Energy Carolinas and Duke Energy Progress filed a joint petition on 
August 7, 2020, with the NCUC for deferral treatment of incremental costs and 
waived customer fees due to the COVID-19 pandemic. Comments on the joint 
petition were filed on November 5, 2020, and reply comments were filed on 

November 30, 2020. Duke Energy Carolinas and Duke Energy Progress cannot 
predict the outcome of this matter.

South Carolina

On March 13, 2020, Governor Henry McMaster declared a state of 
emergency due to the COVID-19 pandemic. The governor also issued a letter 
on March 14, 2020, to the ORS Executive Director regarding the suspension of 
disconnection of essential utility services for nonpayment. On March 18, 2020, 
the PSCSC issued an order approving such waivers, and also approved waivers 
for regulations related to late fees and reconnect fees. The PSCSC’s order also 
required utilities to track the financial impacts of actions taken pursuant to such 
waivers for possible reporting to the PSCSC.

On May 13, 2020, the ORS filed a letter with the PSCSC that included 
a request from Governor McMaster that utilities proceed with developing and 
implementing plans for phasing in normal business operations. On May 14, 2020, 
the PSCSC conditionally vacated the regulation waivers regarding termination of 
service and suspension of disconnect fees. Prior to termination, utilities are to 
refer past-due customers to local organizations for assistance and/or deferred 
payment arrangements. Duke Energy Carolinas and Duke Energy Progress filed a 
report on June 30, 2020, as required by PSCSC order, reporting revenue impact, 
costs and savings related to COVID-19 to date. On August 14, 2020, Duke Energy 
Carolinas and Duke Energy Progress filed a joint petition with the PSCSC for 
approval of an accounting order to defer incremental COVID-19 related costs 
incurred through June 30, 2020, and for the ongoing months during the duration 
of the COVID-19 pandemic. The deferral request did not include lost revenues. 
Updates on cost impacts were filed on September 30, 2020, and included 
financial impacts through the end of August 2020. On October 16, 2020, the ORS 
requested the PSCSC delay taking formal action on the deferral request until 
the ORS and any intervenors complete discovery. The PSCSC issued an order on 
October 21, 2020, to grant additional time to complete discovery until January 
20, 2021, and to establish a procedural schedule. Updates on cost impacts were 
filed on December 30, 2020, and included financial impacts through November 
30, 2020. On January 15, 2021, ORS requested the PSCSC suspend the dates 
for the ORS report and public hearing. The ORS conferred with the companies 
regarding the status of the docket, and the parties mutually agreed that recently 
enacted federal laws addressing COVID-19 aid and recovery should be studied 
before further action is taken in this docket. On January 27, 2021, the PSCSC 
voted to grant the ORS request to suspend the virtual public hearing. ORS is to 
file its report on or before March 29, 2021.

On August 17, 2020, Duke Energy Carolinas and Duke Energy Progress 

filed an update on their planned return to normal operations during the 
COVID-19 pandemic. Normal billing practices resumed in South Carolina as 
of October 1, 2020, and service disconnections for nonpayment resumed on 
October 12, 2020. Customers were notified of the resumption of normal billing 
practices, the option of payment arrangements and where to find assistance, if 
necessary. Duke Energy Carolinas and Duke Energy Progress cannot predict the 
outcome of this matter.

2020 North Carolina Storm Securitization Filings

On October 26, 2020, Duke Energy Carolinas and Duke Energy Progress 
filed a joint petition with the NCUC, as agreed to in partial settlements reached 
in the 2019 North Carolina Rate Cases for Duke Energy Carolinas and Duke 
Energy Progress, seeking authorization for the financing of the costs of each 
utility’s storm recovery activities required as a result of Hurricane Florence, 
Hurricane Michael, Hurricane Dorian and Winter Storm Diego. Specifically, 
Duke Energy Carolinas and Duke Energy Progress requested that the NCUC find 
that their storm recovery costs and related financing costs are appropriately 
financed by debt secured by storm recovery property, and that the Commission 
issue financing orders by which each utility may accomplish such financing 

124

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)using a securitization structure. On January 27, 2021, Duke Energy Carolinas, 
Duke Energy Progress and the Public Staff filed an Agreement and Stipulation 
of Partial Settlement, which is subject to review and approval of the NCUC, 
resolving certain accounting issues, including agreement to support an 
18- to 20-year bond period. The total revenue requirement over a proposed 
20-year bond period for the storm recovery charges is approximately $287 
million for Duke Energy Carolinas and $920 million for Duke Energy Progress. 

A remote evidentiary hearing ended on January 29, 2021, and on February 1, 
2021, the NCUC granted a motion by Duke Energy Carolinas and Duke Energy 
Progress for a temporary 30-day waiver of the 135-day time frame for the NCUC 
to issue orders on the joint petition, extending the deadline for the NCUC to issue 
an order to no later than April 9, 2021. Duke Energy Carolinas and Duke Energy 
Progress cannot predict the outcome of this matter.

Duke Energy Carolinas

Regulatory Assets and Liabilities

The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas’ Consolidated Balance Sheets.

(in millions)

Regulatory Assets(a)
AROs – coal ash
Accrued pension and OPEB(c)
Storm cost deferrals
Retired generation facilities(c)
PISCC(c)
Deferred asset – Lee COLA
Hedge costs deferrals(c)
AMI
DSM/EE
Vacation accrual
Deferred fuel and purchased power
COR settlement
Nuclear deferral
Customer connect project
ABSAT, coal ash basin closure
Deferred severance charges
Incremental COVID-19 expenses

Other
Total regulatory assets

Less: current portion

Total noncurrent regulatory assets

Regulatory Liabilities(a)
Net regulatory liability related to income taxes(d)
Costs of removal(c)
AROs – nuclear and other
Provision for rate refunds(c)
Accrued pension and OPEB(c)
Deferred fuel and purchased power
Other 
Total regulatory liabilities

Less: current portion

Total noncurrent regulatory liabilities

December 31,

2020

Earns/Pays
a Return

Recovery/Refund
Period Ends

2019

 (b) 

 (i) 

 (b) 

2023
 (b) 

 (b) 

 2041 
 (b) 

 (g) 

 2021 
 2022 
(b)

2022
(b)

(b)

2022
 (b) 

 (b) 

(b)

(f)

(b)

(i)

2020
(b)

 (h) 

Yes
 Yes 
 Yes 
 Yes 

 Yes 
 Yes 
 (g) 

(e)

Yes

Yes 
Yes

Yes 

Yes

Yes
Yes
(e)

$ 1,414 
427 
205 
11 
32 
324 
174 
154 
46 
84 
42 
95 
88 
50 
71 
57 
31 

164 
3,469 

473 

$ 1,696 
477 
178 
16 
33 
350 
198 
166 
100 
80 
222 
98 
67 
28 
50 
— 
— 

151 
3,910 

550 

$ 2,996 

$ 3,360 

$ 2,874 
1,975 
1,512 
170 
32 
18 
427 
7,008 

$ 3,060 
1,936 
1,100 
175 
39 
— 
368 
6,678 

473 

255 

$ 6,535 

$ 6,423 

Included in rate base. 
Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 23. Portions are included in rate base.

(a)  Regulatory assets and liabilities are excluded from rate base unless otherwise noted. 
(b)  The expected recovery or refund period varies or has not been determined.
(c) 
(d) 
(e)  Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina.
(f)  Recovered over the life of the associated assets. 
(g) 
(h)  Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders.
(i)  Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.

Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism.

125

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
2017 North Carolina Rate Case

On August 25, 2017, Duke Energy Carolinas filed an application with the 

NCUC for a rate increase for retail customers of approximately $647 million. 
On February 28, 2018, Duke Energy Carolinas and the Public Staff filed an 
Agreement and Stipulation of Partial Settlement resolving certain portions of the 
proceeding. Terms of the settlement included a return on equity of 9.9% and 
a capital structure of 52% equity and 48% debt. On June 22, 2018, the NCUC 
issued an order approving the Stipulation of Partial Settlement and requiring 
a revenue reduction. As a result of the June 22, 2018, order, Duke Energy 
Carolinas recorded a pretax charge of approximately $150 million to Impairment 
charges and Operation, maintenance and other on the Consolidated Statements 
of Operations. The charge was primarily related to the denial of a return on the 
Lee Nuclear Project and the assessment of a $70 million cost of service penalty 
by reducing the annual recovery of deferred coal ash costs by $14 million per 
year over a five-year recovery period.

The North Carolina Attorney General and other parties separately filed 
Notices of Appeal to the North Carolina Supreme Court. The North Carolina 
Supreme Court consolidated the Duke Energy Carolinas and Duke Energy 
Progress appeals. On December 11, 2020, the North Carolina Supreme Court 
issued an opinion on the consolidated appeals of the 2018 Duke Energy 
Carolinas and Duke Energy Progress rate case orders which affirmed, in part, 
and reversed and remanded, in part, the NCUC’s decisions. In the Opinion, 
the court upheld the NCUC’s decision to include coal ash costs in the cost of 
service, as well as the NCUC’s discretion to allow a return on the unamortized 
balance of coal ash costs. The court also remanded to the NCUC a single issue 
to consider the assessment of support for the Public Staff’s equitable sharing 
argument. In response to a NCUC order seeking comments on the proposed 
procedure on remand, on January 11, 2021, Duke Energy Carolinas, Duke 
Energy Progress, the Public Staff, the North Carolina Attorney General, Sierra 
Club and Carolina Industrial Group for Fair Utility Rates II and III filed joint 
comments proposing that the NCUC not hold additional evidentiary hearings, 
but instead rely upon existing records in the 2017 North Carolina rate cases, or 
in the alternative the records in the 2019 North Carolina rate cases, in deciding 
the issue on remand. On January 22, 2021, Duke Energy Carolinas and Duke 
Energy Progress entered into the CCR Settlement Agreement with the Settling 
Parties, which was filed with the NCUC on January 25, 2021. For information 
on a proposed settlement pending before the NCUC, see “2021 Coal Ash 
Settlement.” Duke Energy Carolinas cannot predict the outcome of this matter.

2019 North Carolina Rate Case

On September 30, 2019, Duke Energy Carolinas filed an application 
with the NCUC for a net rate increase for retail customers of approximately 
$291 million, which represented an approximate 6% increase in annual base 
revenues. The gross rate case revenue increase request was $445 million, 
which was offset by an EDIT rider of $154 million to return to customers North 
Carolina and federal EDIT resulting from recent reductions in corporate tax 
rates. The request for a rate increase was driven by major capital investments 
subsequent to the previous base rate case, coal ash pond closure costs, 
accelerated coal plant depreciation and deferred 2018 storm costs. Duke 
Energy Carolinas requested rates be effective no later than August 1, 2020. 
The NCUC established a procedural schedule with an evidentiary hearing to 
begin on March 23, 2020. On March 16, 2020, in consideration of public health 
and safety as a result of the COVID-19 pandemic, Duke Energy Carolinas filed 
a motion with the NCUC seeking a suspension of the procedural schedule in 

the rate case, including issuing discovery requests, and postponement of the 
evidentiary hearing for 60 days. Also on March 16, 2020, the NCUC issued an 
Order Postponing Hearing and Addressing Procedural Matters, which postponed 
the evidentiary hearing until further order by the Commission.

On March 25, 2020, Duke Energy Carolinas and the Public Staff filed an 
Agreement and Stipulation of Partial Settlement, which is subject to review and 
approval of the NCUC, resolving certain issues in the base rate proceeding. 
Major components of the settlement included:

• Removal of deferred storm costs from the rate case;

• Filing a petition seeking to securitize the deferred storm costs within 

120 days of a commission order in this rate case regarding the 
reasonableness and prudency of the storm costs;

• Agreement of certain assumptions to demonstrate the quantifiable 

benefits to customers of a securitization financing; and

• Agreement on certain accounting matters, including recovery of 
employee incentives, severance, aviation costs and executive 
compensation.

On May 6, 2020, Duke Energy Carolinas, Duke Energy Progress and 

the Public Staff filed a joint motion requesting that the NCUC issue an order 
scheduling one consolidated evidentiary hearing to consider the companies’ 
applications for net rate increases. On June 17, 2020, the NCUC issued an 
order adopting procedures for the expert witness hearings to take place in 
three phases: (1) a hearing on issues common to both rate cases conducted 
remotely; (2) a hearing on Duke Energy Carolinas specific rate case issues, 
followed immediately by; (3) a hearing on Duke Energy Progress specific rate 
case issues. On July 24, 2020, Duke Energy Carolinas filed its request for 
approval of its notice to customers required to implement temporary rates. 
On July 27, 2020, Duke Energy Carolinas filed a joint motion with Duke Energy 
Progress and the Public Staff notifying the Commission that the parties reached 
a joint partial settlement with the Public Staff. Also, on July 27, 2020, Duke 
Energy Carolinas filed a letter stating that it intended to update its temporary 
rates calculation to reflect the terms of the partial settlement.

On July 31, 2020, Duke Energy Carolinas and the Public Staff filed 
a Second Agreement and Stipulation of Partial Settlement (Second Partial 
Settlement), which is subject to review and approval of the NCUC, resolving 
certain remaining issues in the base rate proceeding. Major components of the 
Second Partial Settlement included:

• A return on equity of 9.6% and a capital structure of 52% equity and 

48% debt;

• Agreement on amortization over a five-year period for unprotected 

federal EDIT flowbacks to customers;

• Agreement on the inclusion of plant in service and other revenue 

requirement updates through May 31, 2020, subject to Public Staff 
review. Annual revenue requirement associated with the May 31 
update is estimated at $45 million; and

• Settlement to allow the deferral of costs for certain grid projects placed 
in service between June 1, 2020, and December 31, 2022, totaling 
$0.8 billion.

126

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The remaining items litigated at hearing included recovery of deferred 

coal ash compliance costs that are subject to asset retirement obligation 
accounting, implementation of new depreciation rates and the amortization 
period of the loss on the hydro station sale. 

On August 4, 2020, Duke Energy Carolinas filed an amended motion 

for approval of its amended notice to customers, seeking to exercise its 
statutory right to implement temporary rates subject to refund on or after 
August 24, 2020. The revenue requirement to be recovered, subject to 
refund, through the temporary rates is based on and consistent with the 
base rate component of the Second Partial Settlement with the Public Staff 
and excludes the items to be litigated noted above. Duke Energy Carolinas 
will not begin the amortization or implementation of these items until a final 
order is issued in the rate case and new base rates are implemented. These 
items will also be excluded when determining whether a refund of amounts 
collected through these temporary rates is needed. In addition, Duke Energy 
Carolinas also seeks authorization to place a temporary decrement EDIT 
Rider into effect, concurrent with the temporary base rate change. The 
temporary rate changes are not final rates and remain subject to the NCUC’s 
determination of the just and reasonable rates to be charged by Duke Energy 
Carolinas on a permanent basis. The NCUC approved the August 4, 2020 
amended temporary rates motion on August 6, 2020, and temporary rates 
went into effect on August 24, 2020.

The Duke Energy Carolinas evidentiary hearing concluded on 
September 18, 2020, and post-hearing filings were made with the NCUC 
from all parties by November 4, 2020. On January 22, 2021, Duke Energy 
Carolinas and Duke Energy Progress entered into the CCR Settlement 
Agreement with the Settling Parties, which was filed with the NCUC on 
January 25, 2021. Duke Energy Carolinas expects the NCUC to issue an 
order on its net rate increase by the second quarter of 2021. For information 
on a proposed settlement pending before the NCUC, see “2021 Coal Ash 
Settlement.” Duke Energy Carolinas cannot predict the outcome of this 
matter.

2018 South Carolina Rate Case

On November 8, 2018, Duke Energy Carolinas filed an application with the 

PSCSC for a rate increase for retail customers of approximately $168 million.
After hearings in March 2019, the PSCSC issued an order on May 21, 
2019, which included a return on equity of 9.5% and a capital structure of 
53% equity and 47% debt. The order also included the following material 
components:

• Approval of cancellation of the Lee Nuclear Project, with Duke 
Energy Carolinas maintaining the Combined Operating License;

• Approval of recovery of $125 million (South Carolina retail portion) 
of Lee Nuclear Project development costs (including AFUDC through 
December 2017) over a 12-year period, but denial of a return on 
the deferred balance of costs;

• Approval of recovery of $96 million of coal ash costs over a 

five-year period with a return at Duke Energy Carolinas’ WACC;

• Denial of recovery of $115 million of certain coal ash costs deemed 
to be related to the Coal Ash Act and incremental to the federal 
CCR rule;

• Approval of a $66 million decrease to base rates to reflect the 
change in ongoing tax expense, primarily the reduction in the 
federal income tax rate from 35% to 21%;

• Approval of a $45 million decrease through the EDIT Rider to 

return EDIT resulting from the federal tax rate change and deferred 
revenues since January 2018 related to the change, to be returned 
in accordance with the Average Rate Assumption Method (ARAM) 
for protected EDIT, over a 20-year period for unprotected EDIT 
associated with Property, Plant and Equipment, over a five-year 
period for unprotected EDIT not associated with Property, Plant 
and Equipment and over a five-year period for the deferred 
revenues; and

• Approval of a $17 million decrease through the EDIT Rider related to 
reductions in the North Carolina state income tax rate from 6.9% to 
2.5% to be returned over a five-year period.

As a result of the order, revised customer rates were effective June 1, 
2019. On May 31, 2019, Duke Energy Carolinas filed a Petition for Rehearing 
or Reconsideration of that order contending substantial rights of Duke Energy 
Carolinas were prejudiced by unlawful, arbitrary and capricious rulings by 
the PSCSC on certain issues presented in the proceeding. On June 19, 2019, 
the PSCSC issued a Directive denying Duke Energy Carolinas’ request to 
rehear or reconsider the Commission’s rulings on certain issues presented in 
the proceeding including coal ash remediation and disposal costs, return on 
equity and the recovery of a return on deferred operation and maintenance 
expenses. An order detailing the Commission’s decision in the Directive 
was issued on October 18, 2019. Duke Energy Carolinas filed a notice of 
appeal on November 15, 2019, with the Supreme Court of South Carolina. 
On November 20, 2019, the South Carolina Energy Users Committee filed 
a Notice of Appeal and the ORS filed a Notice of Cross Appeal with the 
Supreme Court of South Carolina. On February 12, 2020, Duke Energy 
Carolinas and the ORS filed a joint motion to extend briefing schedule 
deadlines, which was approved by the Supreme Court of South Carolina 
on February 20, 2020. On March 10, 2020, the ORS filed a consent motion 
requesting withdrawal of their appeal, which was granted by the Supreme 
Court of South Carolina on April 30, 2020. Initial briefs were filed on April 
21, 2020, which included the South Carolina Energy User’s Committee brief 
arguing that the PSCSC erred in allowing Duke Energy Carolinas’ recovery of 
costs related to the Lee Nuclear Station. Response briefs were filed on July 
6, 2020, and reply briefs were filed on August 11, 2020. Oral arguments 
have not yet been scheduled by the Supreme Court of South Carolina. Based 
on legal analysis and the filing of the appeal, Duke Energy Carolinas has not 
recorded an adjustment for its deferred coal ash costs in this matter. Duke 
Energy Carolinas cannot predict the outcome of this matter.

127

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Progress

Regulatory Assets and Liabilities

The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress’ Consolidated Balance Sheets.

(in millions)

Regulatory Assets(a)
AROs – coal ash
AROs – nuclear and other
Accrued pension and OPEB
Storm cost deferrals(d)
Retired generation facilities
PISCC and deferred operating expenses
Deferred asset – Harris COLA
Hedge costs deferrals
AMI
DSM/EE(e)
Vacation accrual
Deferred fuel and purchased power
COR settlement
NCEMPA deferrals
Nuclear deferral
Customer connect project
ABSAT, coal ash basin closure
Deferred severance charges
Incremental COVID-19 expenses
Other
Total regulatory assets

Less: current portion

Total noncurrent regulatory assets

Regulatory Liabilities(a)
Net regulatory liability related to income taxes(l)
Costs of removal
Provision for rate refunds
Other 
Total regulatory liabilities

Less: current portion

Total noncurrent regulatory liabilities

December 31,

2020

Earns/Pays
a Return

Recovery/Refund
Period Ends

2019

 (b) 

 (c) 

 (k) 

 (b) 

 (b) 

2054
 (b)

 (b) 

 (b) 

 (i) 

2021
2022
 (e) 

2042
2022
(b)

(b)

2022
 (b) 

 (b) 

(b)

(j)

(b)

 (h) 

 Yes 
 Yes 
 Yes 

Yes
 (i) 

 (f) 

Yes
 (g) 

 Yes 
Yes

Yes

Yes
Yes

$ 1,347 
683 
393 
785 
189 
51 
32 
89 
57 
224 
42 
158 
33 
124 
35 
25 
27 
29 
23 
122 
4,468 

$ 1,834 
509 
423 
801 
83 
33 
38 
85 
61 
216 
41 
266 
35 
72 
40 
17 
15 
— 
— 
109 
4,678 

492 

526 

$ 3,976 

$ 4,152 

$ 1,662 
2,666 
123 
473 
4,924 

$ 1,802 
2,294 
123 
249 
4,468 

530 

236 

$ 4,394 

$ 4,232 

Included in rate base.

(a)  Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)  The expected recovery or refund period varies or has not been determined.
(c)  Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit.
(d)  South Carolina storm costs are included in rate base.
(e) 
(f)  Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina.
(g)  South Carolina retail allocated costs are earning a return.
(h)  Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders.
(i) 
(j)  Recovered over the life of the associated assets.
(k)  Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.
(l) 

Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism.

Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate, both discussed in Note 23. Portions are included in rate base.

128

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
 
 
 
 
2017 North Carolina Rate Case

On June 1, 2017, Duke Energy Progress filed an application with the 

NCUC for a rate increase for retail customers of approximately $477 million, 
which was subsequently adjusted to $420 million. On November 22, 2017, 
Duke Energy Progress and the Public Staff filed an Agreement and Stipulation 
of Partial Settlement resolving certain portions of the proceeding. Terms of 
the settlement included a return on equity of 9.9% and a capital structure of 
52% equity and 48% debt. On February 23, 2018, the NCUC issued an order 
approving the stipulation. The order also impacted certain amounts that were 
similarly recorded on Duke Energy Carolinas’ Consolidated Balance Sheets. As 
a result of the order, Duke Energy Progress and Duke Energy Carolinas recorded 
pretax charges of $68 million and $14 million, respectively, in the first quarter 
of 2018 to Impairment charges, Operation, maintenance and other and Interest 
Expense on the Consolidated Statements of Operations. The Public Staff, the 
North Carolina Attorney General and the Sierra Club filed notices of appeal to the 
North Carolina Supreme Court.

The North Carolina Supreme Court consolidated the Duke Energy Carolinas 

and Duke Energy Progress appeals. On December 11, 2020, the North Carolina 
Supreme Court issued an opinion on the consolidated appeals of the 2018 Duke 
Energy Carolinas and Duke Energy Progress rate case orders which affirmed, in 
part, and reversed and remanded, in part, the NCUC’s decisions. In the Opinion, 
the court upheld the NCUC’s decision to include coal ash costs in the cost of 
service, as well as the NCUC’s discretion to allow a return on the unamortized 
balance of coal ash costs. The court also remanded to the NCUC a single issue 
to consider the assessment of support for the Public Staff’s equitable sharing 
argument. In response to a NCUC order seeking comments on the proposed 
procedure on remand, on January 11, 2021, Duke Energy Carolinas, Duke Energy 
Progress, the Public Staff, the North Carolina Attorney General, Sierra Club and 
Carolina Industrial Group for Fair Utility Rates II and III filed joint comments 
proposing that the NCUC not hold additional evidentiary hearings, but instead 
rely upon existing records in the 2017 North Carolina rate cases or in the 
alternative the records in the 2019 North Carolina rate cases, in deciding the 
issue on remand. On January 22, 2021, Duke Energy Progress and Duke Energy 
Carolinas entered into the CCR Settlement Agreement with the Settling Parties, 
which was filed with the NCUC on January 25, 2021. For information on the 
proposed settlement pending before the NCUC, see “2021 Coal Ash Settlement.” 
Duke Energy Progress cannot predict the outcome of this matter.

2019 North Carolina Rate Case

On October 30, 2019, Duke Energy Progress filed an application with the 

NCUC for a net rate increase for retail customers of approximately $464 million, 
which represented an approximate 12.3% increase in annual base revenues. 
The gross rate case revenue increase request was $586 million, which was 
offset by riders of $122 million, primarily an EDIT rider of $120 million to return 
to customers North Carolina and federal EDIT resulting from recent reductions 
in corporate tax rates. The request for rate increase was driven by major capital 
investments subsequent to the previous base rate case, coal ash pond closure 
costs, accelerated coal plant depreciation and deferred 2018 storm costs. Duke 
Energy Progress seeks to defer and recover incremental Hurricane Dorian storm 
costs in this proceeding and requests rates be effective no later than September 
1, 2020. As a result of the COVID-19 pandemic, on March 24, 2020, the NCUC 
suspended the procedural schedule and postponed the previously scheduled 
evidentiary hearing on this matter indefinitely. On April 7, 2020, the NCUC 
issued an order partially resuming the procedural schedule requiring intervenors 
to file direct testimony on April 13, 2020. Public Staff filed supplemental direct 
testimony on April 23, 2020. Duke Energy Progress filed rebuttal testimony on 
May 4, 2020.

On June 2, 2020, Duke Energy Progress and the Public Staff filed an 
Agreement and Stipulation of Partial Settlement, which is subject to review and 
approval of the NCUC, resolving certain issues in the base rate proceeding. 
Major components of the settlement included:

• Removal of deferred storm costs from the rate case;

• Filing a petition seeking to securitize the deferred storm costs within 

120 days of a commission order in this rate case regarding the 
reasonableness and prudency of the storm costs;

• Agreement of certain assumptions to demonstrate the quantifiable 

benefits to customers of a securitization financing;

• Agreement that the Asheville CC project is complete and in service and 

agreement on the amount to be included in rate base; and

• Agreement on certain accounting matters, including recovery of 
employee incentives, severance, aviation costs and executive 
compensation.

On May 6, 2020, Duke Energy Progress, Duke Energy Carolinas and 

the Public Staff filed a joint motion requesting that the NCUC issue an order 
scheduling one consolidated evidentiary hearing to consider the companies’ 
applications for net rate increases. On June 17, 2020, the NCUC issued an 
order adopting procedures for the expert witness hearings to take place in three 
phases: (1) a hearing on issues common to both rate cases conducted remotely; 
(2) a hearing on Duke Energy Carolinas specific rate case issues, followed 
immediately by; (3) a hearing on Duke Energy Progress specific rate case 
issues. On July 27, 2020, Duke Energy Progress filed a joint motion with Duke 
Energy Carolinas and the Public Staff notifying the Commission that the parties 
reached a joint partial settlement with the Public Staff.

On July 31, 2020, Duke Energy Progress and the Public Staff filed a 

Second Agreement and Stipulation of Partial Settlement (Second Partial 
Settlement), which is subject to review and approval of the NCUC, resolving 
certain remaining issues in the base rate proceeding. Major components of the 
Second Partial Settlement included:

• A return on equity of 9.6% and a capital structure of 52% equity and 

48% debt;

• Agreement on amortization over a five-year period for unprotected 

federal EDIT flowbacks to customers;

• Agreement on the inclusion of plant in service and other revenue 

requirement updates through May 31, 2020, subject to Public Staff 
review. Annual revenue requirement associated with the May 31 update 
is estimated at $25 million; and

• Settlement to allow the deferral of costs for certain grid projects 

placed in service between June 1, 2020, and December 31, 2022, of 
$0.5 billion.

The remaining items litigated at hearing included recovery of deferred coal 
ash compliance costs that are subject to asset retirement obligation accounting 
and implementation of new depreciation rates.

On August 7, 2020, Duke Energy Progress filed a motion for approval of 
notice required to implement temporary rates, seeking to exercise its statutory 
right to implement temporary rates subject to refund on or after September 1, 
2020. The revenue requirement to be recovered subject to refund through the 
temporary rates is based on and consistent with the terms of the base rate 

129

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)component of the settlement agreements with the Public Staff and excludes 
items to be litigated noted above. Duke Energy Progress will not begin the 
amortization or implementation of these items until a final determination is 
issued in the rate case and new base rates are implemented. These items will 
also be excluded when determining whether a refund of amounts collected 
through these temporary rates is needed. In addition, Duke Energy Progress 
also seeks authorization to place a temporary decrement EDIT Rider into effect, 
concurrent with the temporary base rate change. The temporary rate changes 
are not final rates and remain subject to the NCUC’s determination of the just 
and reasonable rates to be charged by Duke Energy Progress on a permanent 
basis. The NCUC approved the August 7, 2020 temporary rates motion on 
August 11, 2020, and temporary rates went into effect on September 1, 2020.
The Duke Energy Progress evidentiary hearing concluded on October 6, 

2020, and post-hearing filings were filed with the NCUC from all parties by 
December 4, 2020. On January 22, 2021, Duke Energy Progress and Duke 
Energy Carolinas entered into the CCR Settlement Agreement with the Settling 
Parties, which was filed with the NCUC on January 25, 2021. Duke Energy 
Progress expects the NCUC to issue an order on its net rate increase by the 
second quarter of 2021. For information on a proposed settlement pending 
before the NCUC, see “2021 Coal Ash Settlement.” Duke Energy Progress cannot 
predict the outcome of this matter.

Hurricane Dorian

Hurricane Dorian reached the Carolinas in September 2019 as a 
Category 2 hurricane making landfall within Duke Energy Progress’ service 
territory. Total estimated incremental operation and maintenance expenses 
incurred to repair and restore the system are approximately $168 million with 
an additional $4 million in capital investments made for restoration efforts. 
Approximately $145 million and $179 million of the operation and maintenance 
expenses are deferred in Regulatory assets within Other Noncurrent Assets on 
the Consolidated Balance Sheets as of December 31, 2020, and December 31, 
2019, respectively. A request for an accounting order to defer incremental storm 
costs associated with Hurricane Dorian was included in Duke Energy Progress’ 
October 30, 2019, general rate case filing with the NCUC. Terms of the June 2, 
2020, Agreement and Stipulation of Partial Settlement removed incremental 
storm costs from the general rate case. A petition seeking to securitize these 
costs, along with costs from Hurricane Florence, Hurricane Michael and Winter 
Storm Diego, was filed on October 26, 2020, with the NCUC. For information on 
the securitization filing, see “2020 North Carolina Storm Securitization Filings.” 
Duke Energy Progress cannot predict the outcome of this matter.

On February 7, 2020, a petition was filed with the PSCSC in the 2019 

storm deferrals docket requesting deferral of approximately $22 million in 
operation and maintenance expenses to an existing storm deferral balance 
previously approved by the PSCSC. The PSCSC voted to approve the request on 
March 4, 2020, and issued a final order on April 7, 2020. On July 1, 2020, Duke 
Energy Progress filed a supplemental true up reducing the actual costs to $17 
million.

2018 South Carolina Rate Case

On November 8, 2018, Duke Energy Progress filed an application with the 

PSCSC for a rate increase for retail customers of approximately $59 million.

After hearings in April 2019, the PSCSC issued an order on May 21, 2019, 
which included a return on equity of 9.5% and a capital structure of 53% equity 
and 47% debt. The order also included the following material components:

• Approval of recovery of $4 million of coal ash costs over a five-year 

period with a return at Duke Energy Progress’ WACC;

• Denial of recovery of $65 million of certain coal ash costs deemed to be 
related to the Coal Ash Act and incremental to the federal CCR rule;

• Approval of a $17 million decrease to base rates to reflect the change 

in ongoing tax expense, primarily the reduction in the federal income tax 
rate from 35% to 21%;

• Approval of a $12 million decrease through the EDIT Tax Savings Rider 
resulting from the federal tax rate change and deferred revenues since 
January 2018 related to the change, to be returned in accordance with 
ARAM for protected EDIT, over a 20-year period for unprotected EDIT 
associated with Property, Plant and Equipment, over a five-year period 
for unprotected EDIT not associated with Property, Plant and Equipment 
and over a three-year period for the deferred revenues; and

• Approval of a $12 million increase due to the expiration of EDIT related 
to reductions in the North Carolina state income tax rate from 6.9% to 
2.5%.

As a result of the order, revised customer rates were effective June 1, 
2019. On May 31, 2019, Duke Energy Progress filed a Petition for Rehearing 
or Reconsideration of that order contending substantial rights of Duke Energy 
Progress were prejudiced by unlawful, arbitrary and capricious rulings by the 
PSCSC on certain issues presented in the proceeding. On June 19, 2019, the 
PSCSC issued a Directive denying Duke Energy Progress’ request to rehear 
or reconsider the Commission’s rulings on certain issues presented in the 
proceeding including coal ash remediation and disposal costs, return on equity 
and the recovery of a return on deferred operation and maintenance expenses, 
but allowing additional litigation-related costs. As a result of the Directive 
allowing litigation-related costs, customer rates were revised effective July 1, 
2019. An order detailing the Commission’s decision in the Directive was issued 
on October 18, 2019. Duke Energy Progress filed a notice of appeal on November 
15, 2019, with the Supreme Court of South Carolina. The ORS filed a Notice 
of Cross Appeal on November 20, 2019. On February 12, 2020, Duke Energy 
Progress and the ORS filed a joint motion to extend briefing schedule deadlines, 
which was approved by the Supreme Court of South Carolina on February 
20, 2020. On March 10, 2020, the ORS filed a consent motion requesting 
withdrawal of their appeal, which was granted by the Supreme Court of South 
Carolina on April 30, 2020. Initial briefs were filed on April 21, 2020. Response 
briefs were filed on July 6, 2020, and reply briefs were filed on August 11, 2020. 
Oral arguments have not yet been scheduled by the Supreme Court of South 
Carolina. Based on legal analysis and the filing of the appeal, Duke Energy 
Progress has not recorded an adjustment for its deferred coal ash costs in this 
matter. Duke Energy Progress cannot predict the outcome of this matter.

Western Carolinas Modernization Plan

Duke Energy Progress retired the 376-MW Asheville coal-fired plant on 
January 29, 2020, at which time the net book value, including associated ash 
basin closure costs, of $214 million was transferred from Generation facilities to 
be retired, net to Regulatory assets within Current Assets and Other Noncurrent 
Assets on the Consolidated Balance Sheets. 

On December 27, 2019, Asheville Combined Cycle Unit 5 Combustion 
Turbine and Unit 6 Steam Turbine Generator and the common systems that 

130

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)serve combined cycle units went into commercial operation. Duke Energy 
Progress placed the Unit 7 Combustion Turbine into commercial operation in 
simple-cycle mode on January 15, 2020. The Unit 8 Steam Turbine Generator 
went into commercial operation on April 5, 2020. On June 2, 2020, Duke Energy 
Progress filed a request with the PSCSC for an accounting order for the deferral 
of post-in-service costs incurred in connection with the addition of the Asheville 
combined-cycle generating plant. The petition requested the PSCSC issue an 
accounting order authorizing Duke Energy Progress to defer post-in-service 
costs including the Asheville combined-cycle’s depreciation expense, property 
taxes, incremental operations and maintenance expenses and carrying costs at 
WACC of approximately $8 million annually. On June 17, 2020, the PSCSC voted 
to approve the petition and issued its final order on July 6, 2020.

On October 8, 2018, Duke Energy Progress filed an application with the 

NCUC for a CPCN to construct the Hot Springs Microgrid Solar and Battery 
Storage Facility, which was approved with certain conditions on May 10, 2019. 
A hearing to update the NCUC on the status of the project was held on March 5, 
2020. Construction began in May 2020 with commercial operation expected to 
begin in October 2021.

On July 27, 2020, Duke Energy Progress filed an application with the 

NCUC for a CPCN to construct the Woodfin Solar Facility, a 5-MW solar 
generating facility to be constructed on a closed landfill in Buncombe County. 
The expert hearing was held on November 18, 2020. Duke Energy Progress 
cannot predict the outcome of this matter.

FERC Return on Equity Complaints

On October 11, 2019, NCEMPA filed a complaint at the FERC against Duke 
Energy Progress pursuant to Section 206 of the Federal Power Act (FPA), alleging 
that the 11% stated return on equity (ROE) component contained in the demand 
formula rate in the Full Requirements Power Purchase Agreement (FRPPA) 
between NCEMPA and Duke Energy Progress is unjust and unreasonable. 
On July 16, 2020, the FERC set this matter for hearing and settlement judge 
procedures and established a refund effective date of October 11, 2019. In its 
order setting the matter for settlement, the FERC allowed for the consideration 
of variations to the base transmission-related ROE methodology developed in its 
Order No. 569-A, through the introduction of “specific facts and circumstances” 
involving issues specific to the case. It is Duke Energy Progress’ view that, 
in consideration of the specific facts and circumstances of risks under the 
provisions of the FRPPA, the stated 11% ROE is just and reasonable. The 
parties are currently in FERC settlement procedures. Duke Energy Progress 
cannot predict the outcome of this matter.

On October 16, 2020, NCEMC filed a complaint at the FERC against Duke 

Energy Progress pursuant to Section 206 of the FPA, alleging that the 11% 
stated ROE component in the demand formula rate in the Power Supply and 
Coordination Agreement between NCEMC and Duke Energy Progress is unjust 
and unreasonable. Under FPA Section 206, the earliest refund effective date that 
the FERC can establish is the date of the filing of the complaint. Duke Energy 
Progress responded to the complaint on November 20, 2020, demonstrating that 
the 11% ROE is just and reasonable for the service provided. The parties have 
filed additional pleadings. The FERC has not issued an order, and there is no 
deadline for the FERC to act. Duke Energy Progress cannot predict the outcome 
of this matter.

131

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Florida

Regulatory Assets and Liabilities

The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida’s Consolidated Balance Sheets.

(in millions)

Regulatory Assets(a)
AROs – coal ash(c)
AROs – nuclear and other(c)
Accrued pension and OPEB(c)
Storm cost deferrals(c)
Nuclear asset securitized balance, net
Retired generation facilities(c)
Hedge costs deferrals
AMI(c)
DSM/EE(c)
Deferred fuel and purchased power
Qualifying facility contract buyouts
Customer connect project
Other
Total regulatory assets

Less: current portion

Total noncurrent regulatory assets

Regulatory Liabilities(a)
Net regulatory liability related to income taxes(c)
Costs of removal(c)
Deferred fuel and purchased power(c)
Other 
Total regulatory liabilities

Less: current portion

Total noncurrent regulatory liabilities

December 31,

Earns/Pays
a Return

Recovery/Refund
Period Ends

2019

$

2020

10 
2 
482 
108 
991 
174 
59 
45 
17 
4 
107 
30 
35 
2,064 

265 

$

9 
159 
474 
413 
1,042 
183 
44 
53 
25 
39 
121 
20 
31 
2,613 

419 

$ 1,799 

$ 2,194 

$

749 
— 
— 
19 
768 

110 

$

793 
267 
1 
26 
1,087 

94 

$

658 

$

993 

 Yes 
 Yes 
 (e) 

 Yes 
 Yes 
 Yes 
 Yes 
 (f) 

 Yes 

 (d) 

(d)

(f)

(d)

 (b) 

 (b) 

 (g) 

 (b) 

 2036 
 (b) 

 2038 
 2032 
 2025
2022
2034
2037
 (b) 

(b)

(b)

(b)

Included in rate base.

(a)  Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)  The expected recovery or refund period varies or has not been determined.
(c) 
(d)  Certain costs earn/pay a return.
(e)  Earns a debt return/interest once collections begin.
(f) 
(g)  Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.

Earns commercial paper rate.

COVID-19 Filings

In March 2020, Governor Ron DeSantis directed the State Health Officer of 

Florida to declare a public health emergency in Florida related to the COVID-19 
pandemic. The governor also issued an Executive Order on March 9, 2020, in 
which he declared a state of emergency in Florida and directed the Director of 
the Division of Emergency Management to implement the state’s Comprehensive 
Emergency Management Plan. On March 19, 2020, Duke Energy Florida filed a 
request to modify its tariff to allow it to waive late fees for customers, and on 
April 6, 2020, the FPSC issued an order approving the request. Duke Energy 
Florida had already voluntarily waived reconnect fees and credit card fees and 
ceased disconnecting customers for nonpayment. On April 2, 2020, Duke Energy 
Florida filed a petition with the FPSC to accelerate a $78 million fuel cost refund 
to customers in the month of May 2020. Typically, the refund would be made 
over the course of 2021. The FPSC approved the petition on April 28, 2020. Duke 
Energy Florida resumed normal billing practices as of August 24, 2020, with 

the exception of the billing of late payment charges. Customers were notified 
of the resumption of normal billing practices, the option of deferred payment 
arrangements and where to find assistance, if necessary. Service disconnections 
for nonpayment for residential customers resumed on October 5, 2020.

2021 Settlement Agreement

On January 14, 2021, Duke Energy Florida filed a Settlement Agreement 
(the “Settlement”) with the FPSC. The parties to the Settlement include Duke 
Energy Florida, the Office of Public Counsel (OPC), the Florida Industrial Power 
Users Group, White Springs Agricultural Chemicals, Inc. d/b/a PCS Phosphate 
and NUCOR Steel Florida, Inc. (collectively, the “Parties”).

Pursuant to the Settlement, the Parties agreed to a base rate stay-out 

provision that expires year-end 2024; however, Duke Energy Florida is allowed 
an increase to its base rates of an incremental $67 million in 2022, $49 million 
in 2023 and $79 million in 2024, subject to adjustment in the event of tax 

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reform during the years 2021, 2022 and 2023. The Parties also agreed to a 
return on equity (“ROE”) band of 8.85% to 10.85% with a midpoint of 9.85% 
based on a capital structure of 53% equity and 47% debt. The ROE band can be 
increased by 25 basis points if the average 30-year U.S. Treasury rate increases 
50 basis points or more over a six-month period in which case the midpoint 
ROE would rise from 9.85% to 10.10%. Duke Energy Florida will also be able to 
retain the DOE award of $173 million for spent nuclear fuel, which is expected 
to be received in 2022, in order to mitigate customer rates over the term of 
the Settlement. In return, Duke Energy Florida will be able to recognize the 
$173 million into earnings from 2022 through 2024.

In addition to these terms, the Settlement contains provisions related 

to the accelerated depreciation of Crystal River Units 4-5, the approval of 
approximately $1 billion in future investments in new cost effective solar power, 
the implementation of a new Electric Vehicle Charging Station Program and 
the deferral and recovery of costs in connection with the implementation of 
Duke Energy Florida’s Vision Florida program, which explores various emerging 
non-carbon emitting generation technology, distributed technologies and 
resiliency projects, among other things. The Settlement also resolves remaining 
unrecovered storm costs for hurricanes Dorian and Michael.

The Settlement is subject to the review and approval of the FPSC, which 
may occur in the second quarter of 2021. If the FPSC approves the Settlement, 
the new rates will be effective January 1, 2022, with subsequent base rate 
increases effective January 1, 2023, and January 1, 2024. Duke Energy Florida 
cannot predict the outcome of this matter.

Storm Restoration Cost Recovery

Duke Energy Florida filed a petition with the FPSC on April 30, 2019, to 
recover $223 million of estimated retail incremental storm restoration costs 
for Hurricane Michael, consistent with the provisions in the 2017 Settlement, 
and the FPSC approved the petition on June 11, 2019. The FPSC also approved 
allowing Duke Energy Florida to use the tax savings resulting from the Tax Act to 
recover these storm costs in lieu of implementing a storm surcharge. Approved 
storm costs are currently expected to be fully recovered by approximately 
year-end 2021. On November 22, 2019, Duke Energy Florida filed a petition 
for approval of actual retail recoverable storm restoration costs related to 
Hurricane Michael in the amount of $191 million plus interest. On May 19, 
2020, Duke Energy Florida filed a supplemental true up reducing the actual 
retail recoverable storm restoration costs related to Hurricane Michael by 
approximately $3 million, resulting in a total request to recover $188 million 
actual retail recoverable storm restoration costs, plus interest. On November 
12, 2020, Duke Energy Florida and OPC requested a 90 day abatement to 
engage in discussions to narrow the issues being litigated. The Prehearing 
Officer approved this request on November 16, 2020, and ordered Duke Energy 
Florida and OPC to update the commission on their discussions by February 12, 
2021. Approximately $80 million and $204 million of these costs are included 
in Regulatory assets within Current Assets and Other Noncurrent Assets on 
the Consolidated Balance Sheets as of December 31, 2020, and December 31, 
2019, respectively.

Duke Energy Florida filed a petition with the FPSC on December 19, 2019, 
to recover $169 million of estimated retail incremental storm restoration costs 
for Hurricane Dorian, consistent with the provisions in the 2017 Settlement 
and the FPSC approved the petition on February 24, 2020. Approximately 
$167 million of these costs are included in Regulatory assets within Current 

Assets and Other Noncurrent Assets on the Consolidated Balance Sheets as of 
December 31, 2019, representing recoverable costs under the FPSC’s storm 
rule and Duke Energy Florida’s OATT formula rates. The amount at December 31, 
2020 was immaterial. The final actual amount of $145 million was filed on 
September 30, 2020. Pursuant to the 2021 Settlement Agreement filed for FPSC 
approval on January 14, 2021, all matters regarding storm cost recovery relating 
to hurricanes Michael and Dorian have been resolved.

Clean Energy Connection

On July 1, 2020, Duke Energy Florida petitioned the FPSC for approval of a 

voluntary solar program. The program consists of 10 new solar generating facilities 
with combined capacity of approximately 750 MW. The program allows participants 
to support cost-effective solar development in Florida by paying a subscription fee 
based on per kilowatt-subscriptions and receiving a credit on their bill based on the 
actual generation associated with their portion of the solar portfolio. The estimated 
cost of the 10 new solar generation facilities is approximately $1 billion over the 
next four years, and this investment will be included in base rates offset by the 
revenue from the subscription fees. The credits will be included for recovery in the 
fuel cost recovery clause. A remote hearing was held on November 17, 2020, and 
post-hearing briefs were filed with the FPSC from all parties by December 9, 2020. 
The FPSC voted to approve the program on January 5, 2021, and issued its written 
order on January 26, 2021.

Crystal River Unit 3 Accelerated Decommissioning Filing

On May 29, 2019, Duke Energy Florida entered into a Decommissioning 

Services Agreement for the accelerated decommissioning of Crystal River Unit 3 
located in Citrus County, Florida, with ADP CR3, LLC and ADP SF1, LLC, each of 
which is a wholly owned subsidiary of Accelerated Decommissioning Partners, 
LLC (ADP), a joint venture between NorthStar Group Services, Inc. and Orano 
USA LLC. The agreement will allow for completion of the decommissioning of 
Crystal River Unit 3 by 2027, rather than 2074 as originally planned. Duke 
Energy Florida will also sell and assign the spent nuclear fuel, storage canisters, 
high-level waste and existing dry spent fuel storage installation and certain 
related assets, together with certain associated liabilities and obligations to 
ADP SF1, LLC. Duke Energy Florida expects that the assets of the Nuclear 
Decommissioning Trust Fund as of December 31, 2020, will be sufficient to 
cover the contract price. The U.S. Nuclear Regulatory Commission approved 
the transaction on April 1, 2020, and the FPSC issued an order approving the 
transaction on August 27, 2020. The transaction closed on October 1, 2020.

Citrus County CC

Construction of the 1,640-MW combined-cycle natural gas plant in Citrus 

County, Florida, began in October 2015 with an estimated cost of $1.5 billion, 
including AFUDC. Both units came online in the fourth quarter of 2018. The 
ultimate cost of the facility was estimated to be $1.6 billion, and Duke Energy 
Florida recorded Impairment charges on Duke Energy’s Consolidated Statements 
of Operations of $60 million in the fourth quarter of 2018 for the overrun. In the 
year ended December 31, 2019, Duke Energy Florida recorded a $36 million 
reduction to the prior year impairment due to a decrease in the cost estimate of 
the Citrus County CC, primarily related to the settlement agreement with Fluor, 
the EPC contractor. This adjustment reduced the estimated cost of the facility to 
$1.5 billion.

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Regulatory Assets and Liabilities

The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio’s Consolidated Balance Sheets.

(in millions)

Regulatory Assets(a)
AROs – coal ash
Accrued pension and OPEB
Storm cost deferrals
PISCC and deferred operating expenses(c)
Hedge costs deferrals
AMI
DSM/EE
Vacation accrual
Deferred fuel and purchased power
CEP deferral
MGP
Deferred pipeline integrity costs
Other
Total regulatory assets

Less: current portion

Total noncurrent regulatory assets

Regulatory Liabilities(a)
Net regulatory liability related to income taxes
Costs of removal
Provision for rate refunds
Accrued pension and OPEB
Other 
Total regulatory liabilities

Less: current portion

Total noncurrent regulatory liabilities

December 31,

2020

Earns/Pays
a Return

Recovery/Refund
Period Ends

2019

 (b) 

 (g) 

2023
2083
(b)

(b)

(e)

2021
2021
 (b)

 (b) 

 (b) 

 (b) 

(b)

(d)

(b)

(g)

(b)

 Yes 

 Yes 

 (f) 

 Yes 

 Yes 

$

$

$

22 
149 
4 
16 
7 
36 
1 
6 
— 
117 
104 
21 
166 
649 

39 

610 

628 
68 
45 
17 
55 
813 

65 

$

$

$

16 
155 
7 
17 
6 
40 
2 
5 
1 
76 
102 
17 
154 
598 

49 

549 

654 
86 
31 
16 
40 
827 

64 

$

748 

$

763 

Included in rate base.

(a)  Regulatory assets and liabilities are excluded from rate base unless otherwise noted. 
(b)  The expected recovery or refund period varies or has not been determined.
(c) 
(d)  Recovery over the life of the associated assets. 
(e)  Recovered via a rider mechanism. 
(f) 
(g)  Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.

Includes incentives on DSM/EE investments.

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Duke Energy Ohio COVID-19 Filings

2017 Electric Security Plan Filing

In response to the COVID-19 pandemic, on March 9, 2020, Governor Mike 

DeWine declared a state of emergency in the state of Ohio. The PUCO issued 
an order directing utilities to cease disconnections for nonpayment and waive 
late payment and reconnection fees and to minimize direct customer contact. 
The PUCO also directed utilities to maintain flexible payment plans and tariff 
interpretations to assist customers during this crisis and to seek any regulatory 
waivers, if necessary. In response, Duke Energy Ohio ceased all disconnections 
except for safety-related concerns and waived late payment and reconnection 
fees. On March 19, 2020, Duke Energy Ohio filed its compliance plan with the 
PUCO and sought waiver of several regulations to minimize direct customer 
contact. On May 4, 2020, Duke Energy Ohio filed a motion to suspend payment 
rules to enable proactive outreach to residential customers offering additional 
options for managing their utility bills. PUCO found the proposal to address the 
state of emergency and the accompanying waivers reasonable and directed 
Duke Energy Ohio to work with the PUCO Staff on a comprehensive plan for 
resumption of activities and operations, to be filed 45 days before resumption 
of activities. The transition plan to resume normal operations to pre-COVID-19 
levels was filed on June 26, 2020, and approved by the PUCO on July 29, 
2020. Pursuant to the transition plan, suspended work and activities resumed 
beginning August 10, 2020, and disconnections resumed on September 8, 2020, 
for nonresidential customers and October 5, 2020, for residential customers.

On April 16, 2020, Duke Energy Ohio filed an application for a Reasonable 

Arrangement to temporarily lower the minimum bill for demand-metered 
commercial and industrial customers. On June 17, 2020, the PUCO denied 
Duke Energy Ohio’s application for a reasonable arrangement and ordered Duke 
Energy Ohio to work with the PUCO Staff on payment arrangements for impacted 
nonresidential customers.

On May 11, 2020, Duke Energy Ohio filed with the PUCO a request seeking 

deferral of incremental costs incurred, as well as specific miscellaneous lost 
revenues using existing uncollectible riders already in place for both electric 
and natural gas operations. Duke Energy Ohio would subsequently file for rider 
recovery at a later date. On June 17, 2020, the PUCO approved Duke Energy 
Ohio’s deferral application. The Commission denied the accrual of carrying costs 
and ordered Duke Energy Ohio to also track potential savings experienced as a 
result of COVID-19.

Duke Energy Kentucky COVID-19

In response to the COVID-19 pandemic, on March 6, 2020, Governor Andy 

Beshear declared a state of emergency in the commonwealth of Kentucky. The 
KPSC issued an order directing utilities to cease disconnections for nonpayment 
and waive late payment fees. The KPSC also directed utilities to maintain 
flexible payment plans and tariff interpretations to assist customers during 
this crisis and to seek any regulatory waivers, if necessary. In response, Duke 
Energy Kentucky ceased all disconnections except for safety-related concerns 
and waived late payment and reconnection fees. On September 21, 2020, the 
KPSC issued an order ending the disconnection moratorium for residential and 
nonresidential customers effective no earlier than October 20, 2020. Utilities 
are required to offer residential customers a default payment plan for any 
arrearages accumulated through the October 2020 billing cycle. Assessment of 
late payment charges for nonresidential customers resumed beginning October 
20, 2020, and resumed for residential customers after December 31, 2020. 
Duke Energy Kentucky is following the order, as clarified on September 30, 2020, 
by the KPSC.

On June 1, 2017, Duke Energy Ohio filed with the PUCO a request for a 
standard service offer in the form of an ESP. On April 13, 2018, Duke Energy 
Ohio, along with certain intervenors, filed a Stipulation and Recommendation 
(Stipulation) with the PUCO resolving that the term of the ESP would be from 
June 1, 2018, to May 31, 2025, and included continuation of market-based 
customer rates through competitive procurement processes for generation, 
continuation and expansion of existing rider mechanisms and approved new 
rider mechanisms relating to costs incurred to enhance the customer experience 
and transform the grid and a service reliability rider for vegetation management. 
On September 13, 2019, and September 16, 2019, Interstate Gas Supply/Retail 
Supply Association and the Ohio Consumers’ Counsel (OCC), respectively, filed 
appeals to the Supreme Court of Ohio claiming the PUCO’s order was in error. 
On March 13, 2020, the Supreme Court of Ohio dismissed OCC’s appeal. On 
April 22, 2020, the Supreme Court of Ohio dismissed all remaining appeals of 
the PUCO’s December 19, 2018 order approving the Stipulation. The case has 
been resolved.

Electric Base Rate Case

Duke Energy Ohio filed with the PUCO an electric distribution base  
rate case application and supporting testimony in March 2017. Duke Energy  
Ohio requested an estimated annual increase of approximately $15 million  
and a return on equity of 10.4%. On April 13, 2018, Duke Energy Ohio, along  
with certain intervenors, filed the Stipulation with the PUCO including a 
$19 million decrease in annual base distribution revenue with a return on equity 
unchanged from the current rate of 9.84% based upon a capital structure of 
50.75% equity and 49.25% debt. Upon approval of new rates, Duke Energy 
Ohio’s rider for recovering its initial SmartGrid implementation ended as these 
costs would be recovered through base rates. The Stipulation also renewed 
14 existing riders, some of which were included in Duke Energy Ohio’s ESP, 
and added two new riders including the Enhanced Service Reliability Rider 
to recover vegetation management costs not included in base rates, up to 
$10 million per year (operation and maintenance only) and the Power Future 
Initiatives Rider (formerly PowerForward Rider) to recover costs incurred to 
enhance the customer experience and further transform the grid (operation and 
maintenance and capital). In addition to the changes in revenue attributable to 
the Stipulation, Duke Energy Ohio’s capital-related riders, including the  
Distribution Capital Investments Rider, began to reflect the lower federal income  
tax rate associated with the Tax Act with updates to customers’ bills beginning  
April 1, 2018. This change reduced electric revenue by approximately 
$20 million on an annualized basis. On December 19, 2018, the PUCO approved 
the Stipulation without material modification. New base rates were implemented 
effective January 2, 2019. On September 13, 2019, and September 16, 2019, 
Interstate Gas Supply/Retail Supply Association and the OCC, respectively, filed 
appeals to the Supreme Court of Ohio claiming the PUCO’s order was in error. 
On March 13, 2020, the Supreme Court of Ohio dismissed the OCC’s appeal. On 
April 22, 2020, the Supreme Court of Ohio dismissed all remaining appeals of 
the PUCO’s December 19, 2018 order approving the Stipulation. The case has 
been resolved.

Ohio Valley Electric Corporation

On March 31, 2017, Duke Energy Ohio filed for approval to adjust 
its existing Rider PSR to pass through net costs related to its contractual 
entitlement to capacity and energy from the generating assets owned by OVEC. 

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2017, until the new rates under Rider PSR were put into effect. On April 13, 
2018, Duke Energy Ohio, along with certain intervenors, filed a Stipulation with 
the PUCO resolving numerous issues including those related to Rider PSR. The  
Stipulation activated Rider PSR for recovery of net costs incurred from 
January 1, 2018, through May 2025. On December 19, 2018, the PUCO 
approved the Stipulation without material modification. The PSR rider became 
effective April 1, 2019. On September 13, 2019, and September 16, 2019, 
Interstate Gas Supply/Retail Supply Association and the OCC filed appeals  
to the Supreme Court of Ohio claiming the PUCO’s order was in error. 
On March 13, 2020, the Supreme Court of Ohio dismissed OCC’s appeal. 
On April 22, 2020, the Supreme Court of Ohio dismissed all remaining appeals 
of the PUCO’s December 19, 2018 order approving the Stipulation. The case has 
been resolved.

On July 23, 2019, House Bill 6 (HB 6) was signed into law that became 

effective January 1, 2020. Among other things, the bill allows for funding 
through a rider mechanism referred to as the Clean Air Fund (Rider CAF), of two 
nuclear generating facilities located in Northern Ohio owned by Energy Harbor 
(f/k/a FirstEnergy Solutions), repeal of energy efficiency mandates and recovery 
of prudently incurred costs, net of any revenues, for Ohio investor-owned 
utilities that are participants under the OVEC power agreement. The recovery is 
through a non-bypassable rider that replaced any existing recovery mechanism 
approved by the PUCO and will remain in place through 2030. As such, Duke 
Energy Ohio created the Legacy Generation Rider (Rider LGR) that replaced 
Rider PSR effective January 1, 2020. The amounts recoverable from customers 
are subject to an annual cap, with incremental costs that exceed such cap 
eligible for deferral and recovery subject to review. See Note 17 for additional 
discussion of Duke Energy Ohio’s ownership interest in OVEC. In July 2020, 
legislation to repeal HB 6 was proposed in both the Ohio House and Senate, with 
subsequent hearings to receive witness testimony. On December 21, 2020, the 
Franklin County Circuit Court issued an injunction against the PUCO’s Order that 
approved the nuclear plant funding through Rider CAF set to become effective 
on January 1, 2021. On December 28, 2020, in a separate proceeding, the Ohio 
Supreme Court, ordered a temporary stay on the implementation of Rider CAF. 
Duke Energy Ohio is not impacted by any changes in Rider CAF. The General 
Assembly’s session ended without addressing HB 6. Duke Energy Ohio cannot 
predict the outcome of this matter. 

Tax Act – Ohio

On December 21, 2018, Duke Energy Ohio filed an application to change 
its base rate tariffs and establish a new rider to implement the benefits of the 
Tax Act for natural gas customers. Duke Energy Ohio requested commission 
approval to implement the changes and rider effective April 1, 2019. The new 
rider will flow through to customers the benefit of the lower statutory federal tax 
rate from 35% to 21% since January 1, 2018, all future benefits of the lower 
tax rates and a full refund of deferred income taxes collected at the higher 
tax rates in prior years. Deferred income taxes subject to normalization rules 
will be refunded consistent with federal law and deferred income taxes not 
subject to normalization rules will be refunded over a 10-year period. The PUCO 
established a procedural schedule and testimony was filed on July 31, 2019. 
An evidentiary hearing occurred on August 7, 2019. Initial briefs were filed on 
September 11, 2019. Reply briefs were filed on September 25, 2019. Duke 
Energy Ohio cannot predict the outcome of this matter.

Energy Efficiency Cost Recovery

On February 26, 2020, the PUCO issued an order directing utilities to 
wind down their demand-side management programs by September 30, 2020, 
and to terminate the programs by December 31, 2020, in response to changes 
in Ohio law that eliminated Ohio’s energy efficiency mandates. On March 27, 
2020, Duke Energy Ohio filed an Application for Rehearing seeking clarification 
on the final true up and reconciliation process after 2020. On April 22, 2020, 
the PUCO granted rehearing for further consideration. The PUCO issued two 
orders on November 18, 2020, on the application for rehearing. The first order 
was a Third Entry on Rehearing on the Duke Energy Ohio portfolio holding the 
cost cap previously imposed was unlawful, a shared savings cap of $8 million 
pretax should be imposed and lost distribution revenues could not be recovered 
after December 31, 2020. The second order directs all utilities set the rider 
to zero effective January 1, 2021, and to file a separate application for final 
reconciliation of all energy efficiency costs prior to December 31, 2020. On 
December 18, 2020, Duke Energy Ohio filed an application for rehearing. 
On January 13, 2021, the application for rehearing was granted for further 
consideration. Duke Energy Ohio cannot predict the outcome of this matter.

On October 9, 2020, Duke Energy Ohio filed an application to implement 
a voluntary efficiency program portfolio to commence on January 1, 2021. The 
application proposes a mechanism for recovery of program costs and a benefit 
associated with avoided transmission and distribution costs. The application 
remains under review. As of January 1, 2021, Duke Energy Ohio suspended its 
energy efficiency programs due to changes in Ohio law. Duke Energy Ohio cannot 
predict the outcome of this matter.

Natural Gas Pipeline Extension

Duke Energy Ohio is proposing to install a new natural gas pipeline (the 
Central Corridor Project) in its Ohio service territory to increase system reliability 
and enable the retirement of older infrastructure. Duke Energy Ohio currently 
estimates the pipeline development costs and construction activities will 
range from $163 million to $245 million in direct costs (excluding overheads 
and AFUDC) and that construction of the pipeline extension is expected to 
be completed before the 2021/2022 winter season. An evidentiary hearing 
for a Certificate of Environmental Compatibility and Public Need concluded 
on April 11, 2019. On November 21, 2019, the Ohio Power Siting Board 
(OPSB) approved Duke Energy Ohio’s application subject to 41 conditions on 
construction. Applications for rehearing were filed by several stakeholders 
on December 23, 2019, arguing that the OPSB approval was incorrect. On 
February 20, 2020, the OPSB denied the rehearing requests. On April 15, 2020, 
Joint Appellants filed a notice of appeal at the Supreme Court of Ohio of the 
OPSB’s decision approving Duke Energy Ohio’s Central Corridor application. 
On June 4, 2020, the OPSB filed a motion to dismiss claims raised by one of the 
Joint Appellants and on August 5, 2020, the Supreme Court of Ohio dismissed 
one of the Joint Appellants from the appeal. Joint Appellants filed their merit 
briefs on August 26, 2020. Appellee briefs were filed October 15, 2020. 
Appellants’ briefs were filed on November 24, 2020. On September 22, 2020, 
Duke Energy Ohio filed an application with the OPSB for approval to amend the 
certificated pipeline route due to changes in the route negotiated with property 
owners and municipalities. The staff report was filed on December 21, 2020, 
recommending approval subject to three conditions that reaffirm previous 
conditions, and provide guidance regarding local permitting and construction 
supervision. On December 23, 2020, Duke Energy Ohio filed a letter indicating 

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PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)its acceptance of these conditions if required by the OPSB. On January 21, 
2021, the OPSB approved the amended filing with the recommended conditions. 
On January 27, 2021, the Ohio Supreme Court set oral argument for March 31, 
2021. Duke Energy Ohio cannot predict the outcome of this matter.

MGP Cost Recovery

As part of its 2012 natural gas base rate case, Duke Energy Ohio has 
approval to defer and recover costs related to environmental remediation at two 
sites (East End and West End) that housed former MGP operations. Duke Energy 
Ohio has collected approximately $55 million in environmental remediation costs 
incurred between 2009 through 2012 through Rider MGP, which is currently 
suspended. Duke Energy Ohio has made annual applications with the PUCO to 
recover its incremental remediation costs consistent with the PUCO’s directive 
in Duke Energy Ohio’s 2012 natural gas base rate case. To date, the PUCO has 
not ruled on Duke Energy Ohio’s annual applications for the calendar years 2013 
through 2019. On September 28, 2018, the staff of the PUCO issued a report 
recommending a disallowance of approximately $12 million of the $26 million in 
MGP remediation costs incurred between 2013 through 2017 that staff believes 
are not eligible for recovery. Staff interprets the PUCO’s 2012 Order granting Duke 
Energy Ohio recovery of MGP remediation as limiting the recovery to work directly 
on the East End and West End sites. On October 30, 2018, Duke Energy Ohio filed 
reply comments objecting to the staff’s recommendations and explaining, among 
other things, the obligation Duke Energy Ohio has under Ohio law to remediate all 
areas impacted by the former MGPs and not just physical property that housed 
the former plants and equipment. On March 29, 2019, Duke Energy Ohio filed its 
annual application to recover incremental remediation expense for the calendar 
year 2018 seeking recovery of approximately $20 million in remediation costs. 
On July 12, 2019, the staff recommended a disallowance of approximately 
$11 million for work that staff believes occurred in areas not authorized for 
recovery. Additionally, staff recommended that any discussion pertaining to Duke 
Energy Ohio’s recovery of ongoing MGP costs should be directly tied to or netted 
against insurance proceeds collected by Duke Energy Ohio. An evidentiary hearing 
concluded on November 21, 2019. Initial briefs were filed on January 17, 2020, 
and reply briefs were filed on February 14, 2020. Duke Energy Ohio cannot predict 
the outcome of this matter.

On March 31, 2020, Duke Energy Ohio filed its annual application to recover 

incremental remediation expense for the calendar year 2019 seeking recovery of 
approximately $39 million in remediation costs incurred during 2019. On July 23, 
2020, the staff recommended a disallowance of approximately $4 million for work 
the staff believes occurred in areas not authorized for recovery. Additionally, the 
staff recommended insurance proceeds, net of litigation costs and attorney fees, 
should be reimbursed to customers and not be held by Duke Energy Ohio until all 
investigation and remediation is complete. Duke Energy Ohio filed comments in 

response to the staff report on August 21, 2020, and intervenor comments were 
filed on November 9, 2020. Duke Energy Ohio cannot predict the outcome of this 
matter.

The 2012 PUCO order also contained conditional deadlines for completing 
the MGP environmental remediation and the deferral of remediation costs at the 
MGP sites. Subsequent to the order, the deadline was extended to December 31, 
2019. On May 10, 2019, Duke Energy Ohio filed an application requesting a 
continuation of its existing deferral authority for MGP remediation that must occur 
after December 31, 2019. On July 12, 2019, staff recommended the Commission 
deny the deferral authority request. On September 13, 2019, intervenor comments 
were filed opposing Duke Energy Ohio’s request for continuation of existing 
deferral authority and on October 2, 2019, Duke Energy Ohio filed reply comments. 
Duke Energy Ohio cannot predict the outcome of this matter.

Duke Energy Kentucky Electric Base Rate Case

On September 3, 2019, Duke Energy Kentucky filed a rate case with the 

KPSC requesting an increase in electric base rates of approximately $46 million. 
On January 31, 2020, Duke Energy Kentucky filed rebuttal testimony updating 
its rate increase request to approximately $44 million. Hearings concluded on 
February 20, 2020, and briefing was completed March 20, 2020. On April 27, 
2020, the KPSC issued its decision approving a $24 million increase for Duke 
Energy Kentucky with a 9.25% return on equity. The KPSC denied Duke Energy 
Kentucky’s major storm deferral mechanism and EV and battery storage pilots. 
The KPSC approved Duke Energy Kentucky’s Green Source Advantage tariff. New 
customer rates were effective on May 1, 2020. On May 18, 2020, Duke Energy 
Kentucky filed its motion for rehearing and on June 4, 2020, the motion was 
granted in part and denied in part by the KPSC. On October 16, 2020, the KPSC 
issued an Order on Rehearing authorizing an additional $4 million increase in 
revenue requirement bringing the total authorized revenue requirement increase 
to $28 million. Revised customer rates took effect in November 2020. The case 
has been resolved. 

Regional Transmission Organization Realignment

Duke Energy Ohio, including Duke Energy Kentucky, transferred control 
of its transmission assets from MISO to PJM, effective December 31, 2011. 
The PUCO approved a settlement related to Duke Energy Ohio’s recovery of 
certain costs of the RTO realignment via a non-bypassable rider. Duke Energy 
Ohio is allowed to recover all MISO Transmission Expansion Planning (MTEP) 
costs directly or indirectly charged to Ohio customers. The KPSC also approved 
a request to effect the RTO realignment, subject to a commitment not to seek 
double recovery in a future rate case of the transmission expansion fees that 
may be charged by MISO and PJM in the same period or overlapping periods.

The following table provides a reconciliation of the beginning and ending balance of Duke Energy Ohio’s recorded liability for its exit obligation and share of MTEP 
costs recorded in Other within Current Liabilities and Other Noncurrent Liabilities on the Consolidated Balance Sheets. The retail portions of MTEP costs billed by MISO 
are recovered by Duke Energy Ohio through a non-bypassable rider. As of December 31, 2020, and 2019, $37 million and $40 million, respectively, are recorded in 
Regulatory assets on Duke Energy Ohio’s Consolidated Balance Sheets.

(in millions)

Duke Energy Ohio

December 31, 2019

Provisions/
Adjustments

Cash
Reductions

December 31, 2020

$ 54

$

(1)

$ (3)

$ 50

137

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Indiana

Regulatory Assets and Liabilities

The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana’s Consolidated Balance Sheets.

(in millions)

Regulatory Assets(a)
AROs – coal ash
Accrued pension and OPEB
Retired generation facilities(c)
PISCC and deferred operating expenses(c)
Hedge costs deferrals
AMI
Vacation accrual
Deferred fuel and purchased power
Other
Total regulatory assets

Less: current portion

Total noncurrent regulatory assets

Regulatory Liabilities(a)
Net regulatory liability related to income taxes
Costs of removal
Accrued pension and OPEB
Amounts to be refunded to customers
Other 
Total regulatory liabilities

Less: current portion

Total noncurrent regulatory liabilities

December 31,

Earns/Pays
a Return

Recovery/Refund
Period Ends

2019

$

2020

615 
245 
43 
303 
22 
19 
12 
9 
60 
1,328 

125 

Yes

Yes
Yes

$

529 
243 
49 
246 
23 
18 
12 
— 
52 
1,172 

90 

$ 1,203 

$ 1,082 

$

956 
599 
100 
17 
66 
1,738 

111 

$ 1,008 
599 
90 
— 
43 
1,740 

55 

$ 1,627 

$ 1,685 

(b)

(e)

2030
(b)

(b)

2031
2021
2021
(b)

(b)

(d)

(e)

(b)

(b)

(a)  Regulatory assets and liabilities are excluded from rate base unless otherwise noted.
(b)  The expected recovery or refund period varies or has not been determined.
(c) 
(d)  Refunded over the life of the associated assets.
(e)  Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.

Included in rate base.

COVID-19 Filing

In response to the COVID-19 pandemic, on March 6, 2020, Governor Eric 

Holcomb declared a public health disaster emergency in the state of Indiana, 
which is currently still in effect. At that time, Duke Energy Indiana had already 
voluntarily suspended all disconnections and waived late payment fees and 
check return fees. The utility also waived credit card fees for residential 
customers. The Executive Order requiring utilities in the state to suspend 
disconnection of utility service expired July 1, 2020.

On May 8, 2020, Duke Energy Indiana, along with other Indiana utilities, 

filed a request with the IURC for approval of deferral treatment for costs and 
revenue reductions associated with the COVID-19 pandemic. The utilities 
requested initial deferral approval in July 2020, with individual subdockets 
for each utility to be established for consideration of utility-specific cost 
and revenue impacts, cost recovery timing and customer payment plans. 
On June 29, 2020, the IURC issued an order in Phase 1 wherein it extended 
the disconnection moratorium for jurisdictional utilities until August 14, 
2020, along with requiring six-month payment arrangements, waiver of late 
fees, reconnection fees, convenience fees and deposits. The IURC permitted 
jurisdictional utilities to use regulatory accounting for any impacts associated 
with the prohibition on utility disconnections, waiver or exclusion of certain 

138

utility fees (i.e., late fees, convenience fees, deposits, and reconnection fees), 
the use of expanded payment arrangements to aid customers, and for COVID-19 
related uncollectible and incremental bad debt expense. The IURC did not permit 
recovery of lost revenues due to load reduction or carrying costs. In Phase 2 
filings, individual utilities may choose to request regulatory accounting for other 
COVID-19 related operation and maintenance costs wherein evidence of the 
impact of any costs or offsetting savings can be presented and considered in an 
evidentiary hearing. On August 12, 2020, the IURC issued a supplemental order 
extending the requirement for six-month payment arrangements and waiver of 
certain customer fees for another 60 days but did not extend the disconnect 
moratorium. As such, Duke Energy Indiana resumed service disconnections 
for nonpayment in mid-September 2020. Normal billing practices resumed in 
mid-October 2020, except that Duke Energy Indiana has committed to provide 
extended payment arrangements into 2021 and to waive credit card and pay 
station fees for residential customers through the end of 2020. Customers were 
notified of the resumption of normal billing practices, the option of deferred 
payment arrangements and where to find assistance, if necessary. Duke Energy 
Indiana cannot predict the outcome of this matter.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)2019 Indiana Rate Case

On July 2, 2019, Duke Energy Indiana filed a general rate case with the 

IURC for a rate increase for retail customers of approximately $395 million. 
The rebuttal case, filed on December 4, 2019, updated the requested revenue 
requirement to result in a 15.6% or $396 million average retail rate increase, 
including the impacts of the Utility Receipts Tax. Hearings concluded on 
February 7, 2020. On June 29, 2020, the IURC issued the order in the rate case 
approving a revenue increase of $146 million before certain adjustments and 
ratemaking refinements. The order provided for an overall cost of capital of 
5.7% based on a 9.7% return on equity and a 53% equity component of the 
capital structure, and approved Duke Energy Indiana’s requested forecasted 
rate base of $10.2 billion as of December 31, 2020, including the Edwardsport 
Integrated Gasification Combined Cycle (IGCC) Plant. The IURC reduced Duke 
Energy Indiana’s request by slightly more than $200 million, when accounting 
for the utility receipts tax and other adjustments. Approximately 50% of the 
reduction is due to a prospective change in depreciation and use of regulatory 
asset for the end-of-life inventory at retired generating plants, approximately 
20% is due to the approved 9.7% return on equity versus requested 10.4% and 
approximately 20% is related to miscellaneous earnings neutral adjustments. 
Step one rates are estimated to be approximately 75% of the total and became 
effective on July 30, 2020. Step two rates are estimated to be the remaining 

25% of the total rate increase and will be implemented in mid-2021. Several 
groups filed notices of appeal of the IURC order on July 29, 2020. Appellate 
briefs were filed on October 14, 2020, focusing on three issues: wholesale sales 
allocations, coal ash basin cost recovery and the Edwardsport IGCC operating 
and maintenance expense level approved. The appeal was fully briefed in 
January 2021, and a decision is expected in the first or second quarter of 2021. 
Duke Energy Indiana cannot predict the outcome of this matter.

2020 Indiana Coal Ash Recovery Case

In Duke Energy Indiana’s rate case, the IURC approved coal ash basin 

closure costs expended through 2018 including financing costs as a regulatory 
asset and included in rate base. The IURC opened a subdocket to deal with the 
post-2018 coal ash related expenditures. Duke Energy Indiana filed testimony on 
April 15, 2020, in the coal ash subdocket requesting recovery for the post-2018 
coal ash basin closure costs for plans that have been approved by the Indiana 
Department of Environmental Management as well as continuing deferral, with 
carrying costs, on the balance. An evidentiary hearing was held on September 
14, 2020, and the parties have agreed on a delayed briefing schedule that 
allows for the Indiana Rate Case appeal to proceed. Briefing will be completed 
by mid-May 2021. Duke Energy Indiana cannot predict the outcome of this 
matter.

Piedmont

Regulatory Assets and Liabilities

The following tables present the regulatory assets and liabilities recorded on Piedmont’s Consolidated Balance Sheets.

(in millions)

Regulatory Assets(a)
AROs – nuclear and other
Accrued pension and OPEB(c)
Vacation accrual
Derivatives – natural gas supply contracts(e)
Amounts due from customers
Deferred pipeline integrity costs(c)
Other
Total regulatory assets

Less: current portion

Total noncurrent regulatory assets

Regulatory Liabilities(a)
Net regulatory liability related to income taxes
Costs of removal
Provision for rate refunds
Accrued pension and OPEB(c)
Amounts to be refunded to customers
Other 
Total regulatory liabilities

Less: current portion

Total noncurrent regulatory liabilities

December 31,

2020

Earns/Pays
a Return

Recovery/Refund
Period Ends

2019

(d)

(f)

2021

(b)

2023
(b)

(b)

(d)

(f)

(b)

(b)

$

$

$

20 
88 
12 
122 
110 
71 
32 
455 

153 

302 

499 
575 
6 
3 
34 
15 
1,132 

88 

$

$

$

16 
90 
12 
117 
36 
62 
30 
363 

73 

290 

555 
574 
41 
3 
34 
5 
1,212 

81 

Yes

Yes

Yes

$ 1,044 

$ 1,131 

Included in rate base. 

(a)  Regulatory assets and liabilities are excluded from rate base unless otherwise noted. 
(b)  The expected recovery or refund period varies or has not been determined.
(c) 
(d)  Recovery over the life of the associated assets.
(e)  Balance will fluctuate with changes in the market. Current contracts extend into 2031. 
(f)  Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 22 for additional detail.

139

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)COVID-19 Filings

North Carolina

On March 10, 2020, Governor Roy Cooper declared a state of emergency 

due to the COVID-19 pandemic. On March 19, 2020, the NCUC issued on 
order directing that utilities under its jurisdiction suspend disconnections 
for nonpayment of utility bills during the state of emergency and allow 
for customers to enter into payment arrangements to pay off arrearages 
accumulated during the state of emergency after the end of the state of 
emergency. Additionally, to help mitigate the financial impacts of the COVID-19 
pandemic on their customers, on March 19, 2020, Piedmont filed a request with 
the NCUC seeking authorization to waive: (1) any late payment charges incurred 
by a residential or nonresidential customer, effective March 21, 2020; (2) the 
application of fees for checks returned for insufficient funds for residential and 
nonresidential customers; (3) the reconnection charge when a residential or 
nonresidential customer seeks to have service restored for those customers 
whose service was recently disconnected for nonpayment and to work with 
customers regarding the other requirements to restore service, including re-
establishment of credit; and (4) the fees and charges associated with the use 
of credit cards or debit cards to pay residential electric utility bills, effective 
March 21, 2020. The NCUC granted Piedmont’s request on March 20, 2020.
On July 29, 2020, the NCUC issued its Order Lifting Disconnection 

Moratorium and Allowing Collection of Arrearages Pursuant to Special 
Repayment Plans. The order contained the following: (1) public utilities may 
resume customer disconnections due to nonpayment for bills first rendered on 
or after September 1, 2020, after appropriate notice; (2) the late fee moratorium 
will continue through the end of the state of emergency or until further order 
of the commission; (3) Duke Energy utilities may reinstate fees for checks 
returned for insufficient funds as well as transaction fees for use of credit cards 
or debit cards for bills first rendered on or after September 1, 2020; and (4) 
no sooner than September 1, 2020, the collection of past-due or delinquent 
accounts accrued up to and including August 31, 2020, may proceed subject to 
conditions. 

Normal billing practices resumed as of October 1, 2020, with the 
exception of billing of late payment charges. Service disconnections for 
nonpayment resumed on November 4, 2020. Customers were notified of the 
resumption of normal billing practices, the option of payment arrangements and 
where to find assistance, if necessary. The NCUC’s moratorium for the billing 
of late payment charges is still in effect until further order from the NCUC. 
Piedmont cannot predict the outcome of this matter.

and/or deferred payment arrangements. Piedmont filed a report on June 30, 
2020, as required by PSCSC order, reporting revenue impact, costs and savings 
related to COVID-19 to date. Updates on cost impacts were filed on September 
30, 2020, and on December 31, 2020, and included financial impacts through 
the end of August 2020, and the end of November 2020, respectively.

On September 30, 2020, Piedmont filed an update on its planned return 
to normal operations during the COVID-19 pandemic. Normal billing practices 
resumed as of October 1, 2020, and service disconnections for nonpayment 
resumed on November 4, 2020. Customers were notified of the resumption of 
normal billing practices, the option of payment arrangements and where to find 
assistance, if necessary.

Tennessee

On March 12, 2020, Governor Bill Lee declared a state of emergency due 
to the COVID-19 pandemic. In an effort to help mitigate the financial impacts of 
the COVID-19 pandemic on their customers, on March 20, 2020, Piedmont filed 
a request with the TPUC seeking authorization to waive, effective March 21, 
2020: (1) any late payment charges incurred by a residential or nonresidential 
customer; (2) the application of fees for checks returned for insufficient funds 
for residential and nonresidential customers; and (3) the reconnection charge 
when a residential or nonresidential customer seeks to have service restored 
for those customers whose service was recently disconnected for nonpayment 
and to work with customers regarding the other requirements to restore service, 
including re-establishment of credit. The TPUC granted Piedmont’s request by 
Order issued March 31,2020. The Order also stated that customers were not 
relieved of their obligation to pay for utility services received.

The TPUC held its regularly scheduled Commission Conference 
electronically on August 10, 2020, and on September 16, 2020, issued an 
Order Lifting Suspension of Disconnections of Service for Lack of Payment 
with Conditions, effective August 29, 2020. The conditions relate to required 
customer communications, payment plan options for past-due amounts 
and ongoing reporting to the TPUC. Potential recovery of costs related to 
the COVID-19 pandemic may be considered in future, individual docketed 
proceedings.

On October 15, 2020, Piedmont filed a report on its planned return to 
normal operations during the COVID-19 pandemic. Normal billing practices 
resumed as of October 1, 2020, and service disconnections for nonpayment 
resumed on November 4, 2020. Customers were notified of the resumption of 
normal billing practices, the option of payment arrangements and where to find 
assistance, if necessary.

South Carolina

2020 Tennessee Rate Case

On March 13, 2020, Governor Henry McMaster declared a state of 
emergency due to the COVID-19 pandemic. The governor also issued a letter 
on March 14, 2020, to the ORS Executive Director regarding the suspension of 
disconnection of essential utility services for nonpayment. On March 18, 2020, 
the PSCSC issued an order approving such waivers, and also approved waivers 
for regulations related to late fees and reconnect fees. The PSCSC’s order also 
required utilities to track the financial impacts of actions taken pursuant to such 
waivers for possible reporting to the PSCSC.

On May 13, 2020, the ORS filed a letter with the PSCSC that included 
a request from Governor McMaster that utilities proceed with developing and 
implementing plans for phasing in normal business operations. On May 14, 
2020, the PSCSC conditionally vacated the regulation waivers regarding 
termination of service and suspension of disconnect fees. Prior to termination, 
utilities are to refer past-due customers to local organizations for assistance 

On July 2, 2020, Piedmont filed an application with the TPUC, its first 

general rate case in Tennessee in nine years, for a rate increase for retail 
customers of approximately $30 million, which represents an approximate 
15% increase in annual revenues. The rate increase is driven by significant 
infrastructure upgrade investments since its previous rate case. Approximately 
half of the plant additions being added to rate base are categories of capital 
investment not covered under the IMR mechanism, which was approved in 
2013. Piedmont amended its requested increase to approximately $26 million 
in December 2020. As authorized under Tennessee law, Piedmont implemented 
interim rates on January 2, 2021, at the level requested in its adjusted request. 
A settlement reached with the Tennessee Consumer Advocate in mid-January 
was filed with the TPUC on February 2, 2021. The settlement results in an 
increase of revenues of approximately $16 million and a ROE of 9.8%. At a 
hearing on February 16, 2021, the TPUC voted to accept the settlement, with 

140

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)new rates effective January 2, 2021. Piedmont must refund customers the 
difference between bills previously rendered under interim rates and such bills if 
rendered under approved rates, plus interest.

2021 North Carolina Rate Case

On February 19, 2021, Piedmont filed notice with the NCUC of its 
intent to file a general rate case on or about March 22, 2021. Piedmont’s last 
general rate case in North Carolina was filed in April 2019, with rates effective 
November 2019.

2019 North Carolina Rate Case

On April 1, 2019, Piedmont filed an application with the NCUC, its 
first general rate case in North Carolina in six years. On August 13, 2019, 
Piedmont, the Public Staff, and two groups representing industrial customers 
filed an Agreement and Stipulation Settlement resolving issues in the base rate 
proceeding, which included a return on equity of 9.7% and a capital structure of 
52% equity and 48% debt. Other major components of the Stipulation included:

• An annual increase in revenues of $109 million before consideration of 

riders associated with federal and state tax reform;

• A decrease through a rider mechanism of $23 million per year to return 
unprotected federal EDIT over a five-year period and deferred revenues 
related to the federal rate reduction of $37 million to be returned over 
one year;

• A decrease through a rider mechanism of $21 million per year related 
to reductions in the North Carolina state income tax rate to be returned 
over a three-year period;

• An overall cap on net revenue increase of $83 million. This will impact 
Piedmont beginning November 1, 2022, only if the company does not 
file another general rate case in the interim;

• Continuation of the IMR mechanism; and

• Establishment of a new deferral mechanism for certain Distribution 
Integrity Management Program (DIMP) operations and maintenance 
expenses incurred effective November 1, 2019, and thereafter.

On October 31, 2019, the NCUC approved the Stipulation and the revised 

customer rates were effective November 1, 2019.

OTHER REGULATORY MATTERS

Atlantic Coast Pipeline, LLC

Atlantic Coast Pipeline (ACP pipeline) was planned to be an approximately 

600-mile interstate natural gas pipeline running from West Virginia to North 
Carolina. Duke Energy indirectly owns a 47% interest, which is accounted for 
as an equity method investment through its Gas Utilities and Infrastructure 
segment.

On April 15, 2020, the United States District Court for the District of 
Montana granted partial summary judgment in favor of the plaintiffs in Northern 
Plains Resource Council v. U.S. Army Corps of Engineers (USACE) (Northern 
Plains), vacating USACE’s Nationwide Permit 12 (NWP 12) and remanding it 

to USACE for consultation under the Endangered Species Act (ESA) of 1973. In 
Northern Plains, the court ruled that NWP 12 was unlawful because USACE did 
not consult under the ESA with the U.S. Fish and Wildlife Service and/or National 
Marine Fisheries Service prior to NWP 12’s reissuance in 2017. Because 
NWP 12 has been vacated and its application enjoined, USACE currently has 
suspended verification of any new or pending applications under NWP 12 until 
further court action clarifies the situation.

On May 28, 2020, the U.S. Court of Appeals for the Ninth Circuit issued a 
ruling that limited the NWP 12 vacatur to energy infrastructure projects. In July 
2020, the Supreme Court of the United States issued an order allowing other 
new oil and gas pipeline projects to use the NWP 12 process pending appeal to 
the U.S. Court of Appeals for the Ninth Circuit; however, that did not decrease 
the uncertainty associated with an eventual ruling. Together, these rulings 
indicated that the timeline to reinstate the necessary water crossing permits for 
ACP would likely cause further delays and cost increases.

On July 5, 2020, Dominion Energy, Inc. announced a sale of substantially 
all of its gas transmission and storage segment assets, operations core to the 
ACP pipeline project.

As a result of the uncertainty created by the NWP 12 rulings, the potential 

impact on the cost and schedule for the project, the ongoing legal challenges 
and the risk of additional legal challenges and delays through the construction 
period and Dominion’s decision to sell substantially all of its gas transmission 
and storage segment assets, Duke Energy’s Board of Directors and management 
decided that it was not prudent to continue to invest in the project. On July 
5, 2020, Duke Energy and Dominion announced the cancellation of the ACP 
pipeline project.

As a result, Duke Energy recorded pretax charges to earnings of 

approximately $2.1 billion for the year ended December 31, 2020, within 
Equity in (losses) earnings of unconsolidated affiliates on the Duke Energy 
Consolidated Statements of Operations. The tax benefit associated with this 
cancellation was $393 million and is recorded in Income Tax Expense (Benefit) 
Expense on the Duke Energy Consolidated Statements of Operations. Additional 
charges of less than $20 million are expected to be recorded within the next 
three years as ACP incurs obligations to exit operations.

As part of the pretax charges to earnings of approximately $2.1 billion, 

Duke Energy has liabilities related to the cancellation of the ACP pipeline 
project of $928 million and $8 million within Other Current Liabilities and 
Other Noncurrent Liabilities, respectively, in the Gas Utilities and Infrastructure 
segment. The liability represents Duke Energy’s obligation of approximately 
$860 million to fund ACP’s outstanding debt and $76 million to satisfy 
remaining ARO requirements to restore construction sites.

See Notes 7 and 12 for additional information regarding this transaction. 

Potential Coal Plant Retirements

The Subsidiary Registrants periodically file integrated resource plans 
(IRPs) with their state regulatory commissions. The IRPs provide a view of 
forecasted energy needs over a long term (10 to 20 years) and options being 
considered to meet those needs. IRPs filed by the Subsidiary Registrants 
included planning assumptions to potentially retire certain coal-fired generating 
facilities in North Carolina and Indiana earlier than their current estimated 
useful lives. Duke Energy continues to evaluate the potential need to retire these 
coal-fired generating facilities earlier than the current estimated useful lives 
and plans to seek regulatory recovery for amounts that would not be otherwise 
recovered when any of these assets are retired.

141

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The table below contains the net carrying value of generating facilities planned for retirement or included in recent IRPs as evaluated for potential retirement. 

Dollar amounts in the table below are included in Net property, plant and equipment on the Consolidated Balance Sheets as of December 31, 2020, and exclude 
capitalized asset retirement costs. 

Duke Energy Carolinas

Allen Steam Station Units 1-3(a)
Allen Steam Station Units 4-5(b)
Cliffside Unit 5(b)
Duke Energy Progress
Mayo Unit 1(b)
Roxboro Units 3-4(b)

Duke Energy Florida

Crystal River Units 4-5(c)

Duke Energy Indiana

Gallagher Units 2 and 4(d)
Gibson Units 1-5(e)
Cayuga Units 1-2(e)

Total Duke Energy

Capacity
(in MW)

Remaining Net
Book Value
(in millions)

604 
526 
546 

746 
1,409 

1,430 

280 
2,845 
1,005 

9,391 

$

113 
338 
350 

676 
484 

1,696 

102 
1,866 
777 

$ 6,402 

(a)  As part of the 2015 resolution of a lawsuit involving alleged New Source Review violations, Duke Energy Carolinas must retire Allen Steam Station Units 1 through 3 by December 31, 2024. The long-term energy options 

considered in the IRP could result in retirement of these units earlier than their current estimated useful lives. Unit 3 with a capacity of 270 MW and a net book value of $26 million at December 31, 2020, is expected to be 
retired in March 2021.

(b)  These units are included in the IRP filed by Duke Energy Carolinas and Duke Energy Progress in North Carolina and South Carolina on September 1, 2020. The long-term energy options considered in the IRP could result in 

retirement of these units earlier than their current estimated useful lives. In 2019, Duke Energy Carolinas and Duke Energy Progress filed North Carolina rate cases that included depreciation studies that accelerate end-of-life 
dates for these plants. A decision by NCUC is expected by the end of the first quarter 2021.

(c)  On January 14, 2021, Duke Energy Florida filed a settlement agreement with the FPSC, which proposed depreciation rates reflecting retirement dates for Duke Energy Florida’s last two coal-fired generating facilities, Crystal 

River Units 4-5, eight years ahead of schedule in 2034 rather than in 2042, in support of Duke Energy’s carbon reduction goals. A request for the FPSC to hold a hearing has been made and a decision by the FPSC is expected 
in the second quarter 2021.

(d)  Duke Energy Indiana committed to either retire or stop burning coal at Gallagher Units 2 and 4 by December 31, 2022, as part of the 2016 settlement of Edwardsport IGCC matters. In February 2021, upon approval by MISO of 

a new retirement date, Duke Energy Indiana determined it would modify the retirement date to June 1, 2021.

(e)  On July 1, 2019, Duke Energy Indiana filed its 2018 IRP with the IURC. The 2018 IRP included scenarios evaluating the potential retirement of coal-fired generating units at Gibson and Cayuga. The rate case filed July 2, 

2019, included proposed depreciation rates reflecting retirement dates from 2026 to 2038. The depreciation rates reflecting these updated retirement dates were approved by the IURC as part of the rate case order issued on 
June 29, 2020.

4.  COMMITMENTS AND CONTINGENCIES

INSURANCE

General Insurance

The Duke Energy Registrants have insurance and reinsurance coverage 

either directly or through indemnification from Duke Energy’s captive insurance 
company, Bison, and its affiliates, consistent with companies engaged in 
similar commercial operations with similar type properties. The Duke Energy 
Registrants’ coverage includes (i) commercial general liability coverage for 
liabilities arising to third parties for bodily injury and property damage; (ii) 
workers’ compensation; (iii) automobile liability coverage; and (iv) property 
coverage for all real and personal property damage. Real and personal property 
damage coverage excludes electric transmission and distribution lines, but 
includes damages arising from boiler and machinery breakdowns, earthquakes, 
flood damage and extra expense, but not outage or replacement power 
coverage. All coverage is subject to certain deductibles or retentions, sublimits, 
exclusions, terms and conditions common for companies with similar types of 
operations. The Duke Energy Registrants self-insure their electric transmission 
and distribution lines against loss due to storm damage and other natural 
disasters. As discussed further in Note 3, Duke Energy Florida maintains a 

142

storm damage reserve and has a regulatory mechanism to recover the cost of 
named storms on an expedited basis.

The cost of the Duke Energy Registrants’ coverage can fluctuate from year 
to year reflecting claims history and conditions of the insurance and reinsurance 
markets.

In the event of a loss, terms and amounts of insurance and reinsurance 
available might not be adequate to cover claims and other expenses incurred. 
Uninsured losses and other expenses, to the extent not recovered by other 
sources, could have a material effect on the Duke Energy Registrants’ results of 
operations, cash flows or financial position. Each company is responsible to the 
extent losses may be excluded or exceed limits of the coverage available.

Nuclear Insurance

Duke Energy Carolinas owns and operates McGuire and Oconee and 

operates and has a partial ownership interest in Catawba. McGuire and 
Catawba each have two reactors. Oconee has three reactors. The other joint 
owners of Catawba reimburse Duke Energy Carolinas for certain expenses 
associated with nuclear insurance per the Catawba joint owner agreements.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Duke Energy Progress owns and operates Robinson, Brunswick and Harris. 

Robinson and Harris each have one reactor. Brunswick has two reactors.

Duke Energy Florida owns Crystal River Unit 3, which permanently ceased 

operation in 2013 and reached a SAFSTOR condition in January 2018 after the 
successful transfer of all used nuclear fuel assemblies to an on-site dry cask 
storage facility.

In the event of a loss, terms and amounts of insurance available might not 

be adequate to cover property damage and other expenses incurred. Uninsured 
losses and other expenses, to the extent not recovered by other sources, could 
have a material effect on Duke Energy Carolinas’, Duke Energy Progress’ and 
Duke Energy Florida’s results of operations, cash flows or financial position. 
Each company is responsible to the extent losses may be excluded or exceed 
limits of the coverage available.

Nuclear Liability Coverage

The Price-Anderson Act requires owners of nuclear reactors to provide for 

public nuclear liability protection per nuclear incident up to a maximum total 
financial protection liability. The maximum total financial protection liability, 
which is approximately $13.8 billion, is subject to change every five years for 
inflation and for the number of licensed reactors. Total nuclear liability coverage 
consists of a combination of private primary nuclear liability insurance coverage 
and a mandatory industry risk-sharing program to provide for excess nuclear 
liability coverage above the maximum reasonably available private primary 
coverage. The U.S. Congress could impose revenue-raising measures on the 
nuclear industry to pay claims.

Primary Liability Insurance

Duke Energy Carolinas and Duke Energy Progress have purchased the 
maximum reasonably available private primary nuclear liability insurance as 
required by law, which is $450 million per station. Duke Energy Florida has 
purchased $100 million primary nuclear liability insurance in compliance with 
the law.

Excess Liability Program

first, to place the plant in a safe and stable condition after a qualifying accident 
and second, to decontaminate the plant before any proceeds can be used for 
decommissioning, plant repair or restoration.

Losses resulting from acts of terrorism are covered as common 
occurrences, such that if terrorist acts occur against one or more commercial 
nuclear power plants insured by NEIL within a 12-month period, they would be 
treated as one event and the owners of the plants where the act occurred would 
share one full limit of liability. The full limit of liability is currently $3.2 billion. 
NEIL sublimits the total aggregate for all of their policies for non-nuclear 
terrorist events to approximately $1.8 billion.

Each nuclear facility has accident property damage, nuclear accident 
decontamination and premature decommissioning liability insurance from 
NEIL with limits of $1.5 billion, except for Crystal River Unit 3. Crystal River 
Unit 3’s limit is $50 million and is on an actual cash value basis. All nuclear 
facilities except for Catawba and Crystal River Unit 3 also share an additional 
$1.25 billion nuclear accident insurance limit above their dedicated underlying 
limit. This shared additional excess limit is not subject to reinstatement in the 
event of a loss. Catawba has a dedicated $1.25 billion of additional nuclear 
accident insurance limit above its dedicated underlying limit. Catawba and 
Oconee also have an additional $750 million of non-nuclear accident property 
damage limit. All coverages are subject to sublimits and significant deductibles.
NEIL’s Accidental Outage policy provides some coverage, similar to 
business interruption, for losses in the event of a major accident property 
damage outage of a nuclear unit. Coverage is provided on a weekly limit basis 
after a significant waiting period deductible and at 100% of the applicable 
weekly limits for 52 weeks and 80% of the applicable weekly limits for up to 
the next 110 weeks. Coverage is provided until these applicable weekly periods 
are met, where the accidental outage policy limit will not exceed $490 million 
for McGuire and Catawba, $434 million for Harris, $420 million for Brunswick, 
$392 million for Oconee and $336 million for Robinson. NEIL sublimits the 
accidental outage recovery up to the first 104 weeks of coverage not to exceed 
$328 million from non-nuclear accidental property damage. Coverage amounts 
decrease in the event more than one unit at a station is out of service due 
to a common accident. All coverages are subject to sublimits and significant 
deductibles.

This program provides $13.3 billion of coverage per incident through the 

Potential Retroactive Premium Assessments

Price-Anderson Act’s mandatory industry-wide excess secondary financial 
protection program of risk pooling. This amount is the product of potential 
cumulative retrospective premium assessments of $138 million times the 
current 97 licensed commercial nuclear reactors in the U.S. Under this program, 
licensees could be assessed retrospective premiums to compensate for public 
nuclear liability damages in the event of a nuclear incident at any licensed 
facility in the U.S. Retrospective premiums may be assessed at a rate not 
to exceed $20.5 million per year per licensed reactor for each incident. The 
assessment may be subject to state premium taxes.

Nuclear Property and Accidental Outage Coverage

Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida 

are members of Nuclear Electric Insurance Limited (NEIL), an industry mutual 
insurance company, which provides property damage, nuclear accident 
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. Additionally, NEIL provides accidental outage coverage for 
losses in the event of a major accidental outage at an insured nuclear station.
Pursuant to regulations of the NRC, each company’s property damage 
insurance policies provide that all proceeds from such insurance be applied, 

143

In the event of NEIL losses, NEIL’s board of directors may assess 
member companies’ retroactive premiums of amounts up to 10 times their 
annual premiums for up to six years after a loss. NEIL has never exercised this 
assessment. The maximum aggregate annual retrospective premium obligations 
for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are 
$156 million, $93 million and $1 million, respectively. Duke Energy Carolinas’ 
maximum assessment amount includes 100% of potential obligations to NEIL 
for jointly owned reactors. Duke Energy Carolinas would seek reimbursement 
from the joint owners for their portion of these assessment amounts.

ENVIRONMENTAL

The Duke Energy Registrants are subject to federal, state and local laws 
regarding air and water quality, hazardous and solid waste disposal, coal ash 
and other environmental matters. These laws can be changed from time to 
time, imposing new obligations on the Duke Energy Registrants. The following 
environmental matters impact all of the Duke Energy Registrants.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Remediation Activities

LITIGATION

Duke Energy Carolinas and Duke Energy Progress

Coal Ash Insurance Coverage Litigation

In March 2017, Duke Energy Carolinas and Duke Energy Progress filed 
a civil action in the North Carolina Business Court against various insurance 
providers. The lawsuit seeks payment for coal ash related liabilities covered 
by third-party liability insurance policies. The insurance policies were issued 
between 1971 and 1986 and provide third-party liability insurance for 
property damage. The civil action seeks damages for breach of contract and 
indemnification for costs arising from the Coal Ash Act and the EPA CCR rule at 
15 coal-fired plants in North Carolina and South Carolina. Fact discovery has 
been completed. The parties filed dispositive pretrial motions relating to key 
legal issues on December 4, 2020. Hearings on these motions are scheduled to 
begin on February 24, 2021, and trial is scheduled for January 24, 2022. Duke 
Energy Carolinas and Duke Energy Progress cannot predict the outcome of this 
matter.

Duke Energy Carolinas

NTE Carolinas II, LLC Litigation

In November 2017, Duke Energy Carolinas entered into a standard FERC 

large generator interconnection agreement (LGIA) with NTE Carolinas II, LLC 
(NTE), a company that proposed to build a combined-cycle natural gas plant 
in Rockingham County, North Carolina. On September 6, 2019, Duke Energy 
Carolinas filed a lawsuit in Mecklenburg County Superior Court against NTE for 
breach of contract and alleging that NTE’s failure to pay benchmark payments 
for Duke Energy Carolinas’ transmission system upgrades required under the 
interconnection agreement constituted a termination of the interconnection 
agreement. Duke Energy Carolinas is seeking a monetary judgment against 
NTE because NTE failed to make multiple milestone payments. The lawsuit 
was moved to federal court in North Carolina. NTE filed a motion to dismiss 
Duke Energy Carolinas’ complaint and brought counterclaims alleging anti-
competitive conduct and violations of state and federal statutes. Duke Energy 
Carolinas filed a motion to dismiss NTE’s counterclaims.

On May 21, 2020, in response to a NTE petition challenging Duke Energy 
Carolina’s termination of the LGIA, FERC issued a ruling (i) that it has exclusive 
jurisdiction to determine whether a transmission provider may terminate a 
LGIA, (ii) FERC approval is required to terminate a conforming LGIA if objected 
to by the interconnection customer, and (iii) Duke Energy may not announce the 
termination of a conforming LGIA unless FERC has approved the termination.
On August 17, 2020, the court denied both NTE’s and Duke Energy 
Carolinas’ Motion to Dismiss. The parties are in active discovery and trial is 
scheduled for June 20, 2022. Duke Energy Carolinas cannot predict the outcome 
of this matter.

In addition to the ARO recorded as a result of various environmental 
regulations, discussed in Note 9, the Duke Energy Registrants are responsible 
for environmental remediation at various sites. These include certain properties 
that are part of ongoing operations and sites formerly owned or used by Duke 
Energy entities. These sites are in various stages of investigation, remediation 
and monitoring. Managed in conjunction with relevant federal, state and 
local agencies, remediation activities vary based upon site conditions and 
location, remediation requirements, complexity and sharing of responsibility. 
If remediation activities involve joint and several liability provisions, strict 
liability, or cost recovery or contribution actions, the Duke Energy Registrants 
could potentially be held responsible for environmental impacts caused by 
other potentially responsible parties and may also benefit from insurance 
policies or contractual indemnities that cover some or all cleanup costs. 
Liabilities are recorded when losses become probable and are reasonably 
estimable. The total costs that may be incurred cannot be estimated because 
the extent of environmental impact, allocation among potentially responsible 
parties, remediation alternatives and/or regulatory decisions have not yet been 
determined at all sites. Additional costs associated with remediation activities 
are likely to be incurred in the future and could be significant. Costs are typically 
expensed as Operation, maintenance and other in the Consolidated Statements 
of Operations unless regulatory recovery of the costs is deemed probable.

The following tables contain information regarding reserves for probable 
and estimable costs related to the various environmental sites. These reserves 
are recorded in Other within Other Noncurrent Liabilities on the Consolidated 
Balance Sheets. 

(in millions)

December 31, 2020 December 31, 2019

Reserves for Environmental Remediation
Duke Energy
Duke Energy Carolinas
Progress Energy
Duke Energy Progress
Duke Energy Florida
Duke Energy Ohio
Duke Energy Indiana

Piedmont

$

75
19 
19 
6 
12 
22 
6 

10 

$

58
11 
16 
4 
9 
19 
4 

8 

Additional losses in excess of recorded reserves that could be incurred for 
the stages of investigation, remediation and monitoring for environmental sites 
that have been evaluated at this time are not material except as presented in 
the table below.

(in millions)

Duke Energy
Duke Energy Carolinas
Duke Energy Ohio

Piedmont

$

25
12 
4 

2 

144

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Asbestos-related Injuries and Damages Claims

Duke Energy Florida

Duke Energy Carolinas has experienced numerous claims for 

indemnification and medical cost reimbursement related to asbestos exposure. 
These claims relate to damages for bodily injuries alleged to have arisen from 
exposure to or use of asbestos in connection with construction and maintenance 
activities conducted on its electric generation plants prior to 1985. As of 
December 31, 2020, there were 145 asserted claims for non-malignant cases 
with the cumulative relief sought of up to $39 million and 56 asserted claims for 
malignant cases with the cumulative relief sought of up to $20 million. Based on 
Duke Energy Carolinas’ experience, it is expected that the ultimate resolution of 
most of these claims likely will be less than the amount claimed.

Duke Energy Carolinas has recognized asbestos-related reserves of $572 
million and $604 million at December 31, 2020, and 2019, respectively. These 
reserves are classified in Other within Other Noncurrent Liabilities and Other 
within Current Liabilities on the Consolidated Balance Sheets. These reserves 
are based upon Duke Energy Carolinas’ best estimate for current and future 
asbestos claims through 2040 and are recorded on an undiscounted basis. In 
light of the uncertainties inherent in a longer-term forecast, management does 
not believe they can reasonably estimate the indemnity and medical costs that 
might be incurred after 2040 related to such potential claims. It is possible 
Duke Energy Carolinas may incur asbestos liabilities in excess of the recorded 
reserves.

Duke Energy Carolinas has third-party insurance to cover certain losses 

related to asbestos-related injuries and damages above an aggregate self-
insured retention. Duke Energy Carolinas’ cumulative payments began to exceed 
the self-insurance retention in 2008. Future payments up to the policy limit will 
be reimbursed by the third-party insurance carrier. The insurance policy limit 
for potential future insurance recoveries indemnification and medical cost claim 
payments is $714 million in excess of the self-insured retention. Receivables for 
insurance recoveries were $704 million and $742 million at December 31, 2020, 
and 2019, respectively. These amounts are classified in Other within Other 
Noncurrent Assets and Receivables within Current Assets on the Consolidated 
Balance Sheets. Duke Energy Carolinas is not aware of any uncertainties 
regarding the legal sufficiency of insurance claims. Duke Energy Carolinas 
believes the insurance recovery asset is probable of recovery as the insurance 
carrier continues to have a strong financial strength rating.

As described in Note 1, Duke Energy adopted the new guidance for credit 

losses effective January 1, 2020, using the modified retrospective method of 
adoption, which does not require restatement of prior year reported results. 
The reserve for credit losses for insurance receivables for the asbestos-related 
injuries and damages based on adoption of the new standard is $15 million 
for Duke Energy and Duke Energy Carolinas as of December 31, 2020. The 
insurance receivable is evaluated based on the risk of default and the historical 
losses, current conditions and expected conditions around collectability. 
Management evaluates the risk of default annually based on payment history, 
credit rating and changes in the risk of default from credit agencies.

Duke Energy Progress and Duke Energy Florida

Spent Nuclear Fuel Matters

On June 18, 2018, Duke Energy Progress and Duke Energy Florida sued 

the U.S. in the U.S. Court of Federal Claims for damages incurred for the period 
2014 through 2018. The lawsuit claimed the Department of Energy breached a 
contract in failing to accept spent nuclear fuel under the Nuclear Waste Policy Act 
of 1982 and asserted damages for the cost of on-site storage in the amount of 
$100 million and $200 million for Duke Energy Progress and Duke Energy Florida, 
respectively. Discovery is ongoing and a trial is expected to occur in 2021.

Power Purchase Dispute Arbitration

Duke Energy Florida, on behalf of its customers, entered into a PPA for 
the purchase of firm capacity and energy from a qualifying facility under the 
Public Utilities Regulatory Policies Act of 1978. Duke Energy Florida determined 
the qualifying facility did not perform in accordance with the PPA, and Duke 
Energy Florida terminated the PPA. The qualifying facility counterparty filed 
a confidential American Arbitration Association (AAA) arbitration demand, 
challenging the termination of the PPA and seeking damages. Duke Energy 
Florida denies liability and is vigorously defending the arbitration claim. 

The final arbitration hearing occurred during the week of December 7, 
2020. An arbitral award has not yet been issued. Duke Energy Florida cannot 
predict the outcome of this matter.

Duke Energy Indiana

Coal Ash Basin Closure Plan Appeal

On January 27, 2020, Hoosier Environmental Council filed a Petition for 
Administrative Review with the Indiana Office of Environmental Adjudication 
(the court) challenging the Indiana Department of Environmental Management’s 
December 10, 2019, partial approval of Duke Energy Indiana’s ash pond closure 
plan. On March 11, 2020, Duke Energy Indiana filed a Motion to Dismiss. On 
May 5, 2020, the court denied the motion. The parties have completed discovery 
and will now prepare to file dispositive motions. Summary judgment briefing will 
be completed by March 30, 2021. If these claims survive dispositive motions, a 
hearing is scheduled for April 26, 2021. Duke Energy Indiana cannot predict the 
outcome of this matter. See Note 9 for additional information.

Other Litigation and Legal Proceedings

The Duke Energy Registrants are involved in other legal, tax and regulatory 

proceedings arising in the ordinary course of business, some of which involve 
significant amounts. The Duke Energy Registrants believe the final disposition of 
these proceedings will not have a material effect on their results of operations, 
cash flows or financial position.

The table below presents recorded reserves based on management’s best 
estimate of probable loss for legal matters, excluding asbestos-related reserves. 
Reserves are classified on the Consolidated Balance Sheets in Other within 
Other Noncurrent Liabilities and Other within Current Liabilities. The reasonably 
possible range of loss in excess of recorded reserves is not material, other than 
as described above.

December 31,

2020

2019

$ 68
2 
61 
13 
28 
1 

$ 62
2 
55 
12 
22 
1 

(in millions)

Reserves for Legal Matters
Duke Energy
Duke Energy Carolinas
Progress Energy 
Duke Energy Progress 
Duke Energy Florida
Piedmont

145

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)OTHER COMMITMENTS AND CONTINGENCIES

General

Purchase Obligations

Purchased Power

As part of their normal business, the Duke Energy Registrants are party 

to various financial guarantees, performance guarantees and other contractual 
commitments to extend guarantees of credit and other assistance to various 
subsidiaries, investees and other third parties. These guarantees involve 
elements of performance and credit risk, which are not fully recognized on the 
Consolidated Balance Sheets and have uncapped maximum potential payments. 
See Note 7 for more information. 

Duke Energy Progress, Duke Energy Florida and Duke Energy Ohio have 

ongoing purchased power contracts, including renewable energy contracts, with 
other utilities, wholesale marketers, co-generators and qualified facilities. These 
purchased power contracts generally provide for capacity and energy payments. 
In addition, Duke Energy Progress and Duke Energy Florida have various 
contracts to secure transmission rights.

The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases.

Minimum Purchase Amount at December 31, 2020

Contract
Expiration

2025-2032
2023-2025
2022

$

2021

66
335
130

$

2022

73
354
55

$

2023

66
374
—

$

2024

67
262
—

2025

Thereafter

$

69
91
—

$

69
—
—

$

Total

410
1,416 
185 

The following table presents future unconditional purchase obligations 

under natural gas supply and capacity contracts as of December 31, 2020.

(in millions)

Duke Energy

Duke Energy Ohio

Piedmont

2021
2022
2023
2024
2025
Thereafter

Total

$

311 
270 
197 
139 
125 
662 

$ 1,704 

$ 41 
28 
20 
17 
14 
60 

$ 180 

$

270 
242 
177 
122 
111 
602 

$ 1,524 

(in millions)

Duke Energy Progress(a)
Duke Energy Florida(b)
Duke Energy Ohio(c)(d)

(a)  Contracts represent either 100% of net plant output or vary.
(b)  Contracts represent 100% of net plant output. 
(c)  Contracts represent between 1% and 11% of net plant output. 
(d)  Excludes PPA with OVEC. See Note 17 for additional information.

Gas Supply and Capacity Contracts

Duke Energy Ohio and Piedmont routinely enter into long-term natural 

gas supply commodity and capacity commitments and other agreements that 
commit future cash flows to acquire services needed in their businesses. These 
commitments include pipeline and storage capacity contracts and natural 
gas supply contracts to provide service to customers. Costs arising from the 
natural gas supply commodity and capacity commitments, while significant, are 
pass-through costs to customers and are generally fully recoverable through 
the fuel adjustment or PGA procedures and prudence reviews in North Carolina 
and South Carolina and under the Tennessee Incentive Plan in Tennessee. 
In the Midwest, these costs are recovered via the Gas Cost Recovery Rate in 
Ohio or the Gas Cost Adjustment Clause in Kentucky. The time periods for fixed 
payments under pipeline and storage capacity contracts are up to 15 years. The 
time periods for fixed payments under natural gas supply contracts are up to six 
years. The time period for the natural gas supply purchase commitments is up 
to 11 years.

Certain storage and pipeline capacity contracts require the payment of 

demand charges that are based on rates approved by the FERC in order to 
maintain rights to access the natural gas storage or pipeline capacity on a 
firm basis during the contract term. The demand charges that are incurred in 
each period are recognized in the Consolidated Statements of Operations and 
Comprehensive Income as part of natural gas purchases and are included in 
Cost of natural gas.

146

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)5.  LEASES

As part of its operations, Duke Energy leases certain aircraft, space on 

communication towers, industrial equipment, fleet vehicles, fuel transportation 
(barges and railcars), land and office space under various terms and expiration 
dates. Additionally, Duke Energy Carolinas, Duke Energy Progress and Duke 
Energy Indiana have finance leases related to firm natural gas pipeline 
transportation capacity. Duke Energy Progress and Duke Energy Florida have 
entered into certain PPAs, which are classified as finance and operating leases. 
Duke Energy has certain lease agreements, which include variable 
lease payments that are based on the usage of an asset. These variable lease 
payments are not included in the measurement of the ROU assets or operating 
lease liabilities on the Consolidated Financial Statements.

Certain Duke Energy lease agreements include options for renewal and 
early termination. The intent to renew a lease varies depending on the lease 
type and asset. Renewal options that are reasonably certain to be exercised are 
included in the lease measurements. The decision to terminate a lease early 
is dependent on various economic factors. No termination options have been 
included in any of the lease measurements.

Duke Energy Carolinas entered into a sale-leaseback arrangement in 
December 2019, to construct and occupy an office tower. The lease agreement 
was evaluated as a sale-leaseback of real estate and it was determined that 
the transaction did not qualify for sale-leaseback accounting. As a result, the 
transaction is being accounted for as a financing. For this transaction, Duke 
Energy Carolinas will continue to record the real estate on the Consolidated 
Balance Sheets within Property, Plant and Equipment as if it were the legal 
owner and will continue to recognize depreciation expense over the estimated 
useful life. In addition, a liability will be recorded for the failed sale-leaseback 
obligation within Long-Term Debt on the Consolidated Balance Sheets, with the 
monthly lease payments commencing after the construction phase being split 
between interest expense and principal pay down of the debt. 

The following tables present the components of lease expense.

Duke Energy operates various renewable energy projects and sells 
the generated output to utilities, electric cooperatives, municipalities and 
commercial and industrial customers through long-term PPAs. In certain 
situations, these PPAs and the associated renewable energy projects qualify 
as operating leases. Rental income from these leases is accounted for as 
Nonregulated electric and other revenues in the Consolidated Statements 
of Operations. There are no minimum lease payments as all payments are 
contingent based on actual electricity generated by the renewable energy 
projects. Contingent lease payments were $275 million, $264 million and 
$268 million for the years ended December 31, 2020, 2019, and 2018, 
respectively. Renewable energy projects owned by Duke Energy and accounted 
for as operating leases had a cost basis of $3,335 million and $3,349 million 
and accumulated depreciation of $848 million and $721 million at December 
31, 2020, and 2019, respectively. These assets are principally classified as 
nonregulated electric generation and transmission assets.

Piedmont has certain agreements with Duke Energy Carolinas for the 
construction and transportation of natural gas pipelines to supply its natural 
gas plant needs. Piedmont accounts for these pipeline lateral contracts as 
sales-type leases since the present value of the sum of the lease payments 
equals the fair value of the assets. These pipeline lateral assets owned by 
Piedmont had a current net investment basis of $2 million and $4 million as of 
December 31, 2020, and 2019, respectively, and a long-term net investment 
basis of $205 million and $70 million as of December 31, 2020, and 2019, 
respectively. These assets are classified in Other, within Current Assets and 
Other Noncurrent Assets, respectively, on Piedmont’s Consolidated Balance 
Sheets. Duke Energy Carolinas accounts for the contracts as finance leases. The 
activity for these contracts is eliminated in consolidation at Duke Energy.

(in millions)

Operating lease expense(a)
Short-term lease expense(a)
Variable lease expense(a)
Finance lease expense

Amortization of leased assets(b)
Interest on lease liabilities(c)

Total finance lease expense

Total lease expense

Year Ended December 31, 2020

Duke
Energy

$ 283 
4 
30 

119 
61 
180 

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

$ 53 
— 
13 

8 
30 
38 

$

162 
2 
13 

24 
44 
68 

$ 72 
1 
5 

6 
37 
43 

Duke
Energy
Florida

$ 90 
1 
8 

18 
7 
25 

Duke
Energy
Ohio

$ 11 
— 
— 

— 
— 
— 

Duke
Energy
Indiana

$ 19 
1 
1 

1
— 
1 

Piedmont

$ 7 
— 
1 

— 
— 
— 

$ 497 

$104 

$

245 

$121 

$124 

$ 11 

$ 22 

$ 8 

(a) 
(b) 
(c) 

Included in Operations, maintenance and other or, for barges and railcars, Fuel used in electric generation and purchased power on the Consolidated Statements of Operations.
Included in Depreciation and amortization on the Consolidated Statements of Operations.
Included in Interest Expense on the Consolidated Statements of Operations.

147

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
 
 
(in millions)

Operating lease expense(a)
Short-term lease expense(a)
Variable lease expense(a)
Finance lease expense

Amortization of leased assets(b)
Interest on lease liabilities(c)

Total finance lease expense

Total lease expense

Year Ended December 31, 2019

Duke
Energy

$ 292 
16 
47 

111 
61 
172 

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

$ 47 
5 
22 

6 
15 
21 

$

161 
9 
22 

21 
42 
63 

$ 69 
4 
16 

5 
33 
38 

Duke
Energy
Florida

$ 92 
5 
6 

16 
9 
25 

Duke
Energy
Ohio

$ 11 
1 
— 

1 
— 
1 

Duke
Energy
Indiana

$ 20 
2 
1 

— 
1 
1 

Piedmont

$ 5 
— 
1 

— 
— 
— 

$ 527 

$ 95 

$

255 

$ 127 

$128 

$ 13 

$ 24 

$ 6 

(a) 
(b) 
(c) 

Included in Operations, maintenance and other or, for barges and railcars, Fuel used in electric generation and purchased power on the Consolidated Statements of Operations.
Included in Depreciation and amortization on the Consolidated Statements of Operations.
Included in Interest Expense on the Consolidated Statements of Operations.

The following table presents rental expense for operating leases, as reported under the former lease standard. These amounts are included in Operation, 

maintenance and other and Fuel used in electric generation and purchased power on the Consolidated Statements of Operations.

(in millions)

Duke Energy 
Duke Energy Carolinas 
Progress Energy 
Duke Energy Progress 
Duke Energy Florida 
Duke Energy Ohio 
Duke Energy Indiana 
Piedmont

Year Ended December 31,

$

2018

268 
49 
143 
75 
68 
13 
21 
11 

The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities.

(in millions)

2021
2022
2023
2024
2025

Thereafter

Total operating lease payments
Less: present value discount

Total operating lease liabilities(a)

December 31, 2020

Duke
Energy

$

229 
212 
202 
186 
162 

870 

1,861 
(344)

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

$ 24 
22 
20 
14 
10 

51 

141 
(24)

$

99 
95 
95 
95 
85 

376 

845 
(149)

$ 44 
40 
41 
41 
31 

252 

449 
(95)

$ 55 
55 
54 
54 
54 

124 

396 
(54)

$ 2 
2 
2 
2 
2 

20 

30 
(9)

$

5 
4 
4 
4 
4 

59 

80 
(24)

$ 5 
5 
5 
5 
5 

— 

25 
(2)

$ 1,517 

$ 117 

$ 696 

$ 354 

$ 342 

$ 21 

$ 56 

$ 23 

(a)  Certain operating lease payments include renewal options that are reasonably certain to be exercised.

148

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
 
 
The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities.

(in millions)

2021
2022
2023
2024
2025

Thereafter

Total finance lease payments
Less: amounts representing interest

Total finance lease liabilities

The following tables contain additional information related to leases.

December 31, 2020

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Indiana

$ 38 
38 
38 
38 
38 

502 

692 
(398)

$

68 
68 
68 
52 
48 

481 

785 
(408)

$ 43 
43 
43 
43 
43 

475 

690 
(394)

$ 25 
25 
25 
9 
5 

6 

95 
(14)

$

1 
1 
1 
1 
1 

26 

31 
(21)

Duke
Energy

$

186 
173 
174 
119 
51 

762 

1,465 
(620)

$

845 

$ 294 

$ 377 

$ 296 

$ 81 

$ 10 

Duke
Energy
Carolinas

Progress
Energy

December 31, 2020

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana Piedmont

(in millions)

Assets

Operating
Finance

Total lease assets
Liabilities
Current

Operating
Finance

Noncurrent

Operating
Finance

Total lease liabilities

(in millions)

Assets

Operating
Finance

Total lease assets
Liabilities
Current

Operating
Finance

Noncurrent

Operating
Finance

Total lease liabilities

Classification

Operating lease ROU assets, net
Net property, plant and equipment

Duke
Energy

$ 1,524 
797 
$ 2,321 

$ 110 
312 
$ 422 

$

690 
416 
$ 1,106 

$ 346 
297 
$ 643 

$ 344 
119 
$ 463 

Other current liabilities
Current maturities of long-term debt

$

177 
129 

$ 20 
5 

$

73 
26 

$ 31 
7 

$ 42 
19 

Operating lease liabilities
Long-Term Debt

1,340 
716 

97 
289 

623 
351 

323 
289 

300 
62 

$ 20 
— 
$ 20 

$

1 
— 

20 
— 

$ 55 
7 
$ 62 

$ 20 
— 
$ 20 

$

3 
— 

$ 4 
— 

53 
10 

19 
— 

$ 2,362 

$ 411 

$ 1,073 

$ 650 

$ 423 

$ 21 

$ 66 

$ 23 

Duke
Energy
Carolinas

Progress
Energy

December 31, 2019

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana Piedmont

Classification

Operating lease ROU assets, net
Net property, plant and equipment

Duke
Energy

$ 1,658 
926 
$ 2,584 

$ 123 
198 
$ 321 

$

788 
443 
$ 1,231 

$ 387 
308 
$ 695 

$ 401 
135 
$ 536 

Other current liabilities
Current maturities of long-term debt

$

208 
119 

$ 27 
7 

$

95 
24 

$ 37 
6 

$ 58 
18 

Operating lease liabilities
Long-Term Debt

1,432 
850 

102 
172 

697 
381 

354 
301 

343 
80 

$ 21 
— 
$ 21 

$

1 
— 

21 
— 

$ 57 
7 
$ 64 

$ 24 
— 
$ 24 

$

3 
— 

$ 4 
— 

55 
10 

23 
— 

$ 2,609 

$ 308 

$ 1,197 

$ 698 

$ 499 

$ 22 

$ 68 

$ 27 

149

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)(in millions)

Cash paid for amounts included in the measurement  

of lease liabilities(a)
Operating cash flows from operating leases
Operating cash flows from finance leases
Financing cash flows from finance leases

Lease assets obtained in exchange for new lease  

liabilities (non-cash)
Operating(b)
Finance

Year Ended December 31, 2020

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana Piedmont

$

$

271 
61 
119 

116 
125

$ 31 
30 
8 

$

124 
44 
24 

$ 52 
37 
6 

$ 72 
7 
18 

$ 17 
125

$ — 
— 

$ — 
— 

$ — 
— 

$

2 
— 
— 

$ — 
— 

$ 6 
— 
1 

$

5 
— 
— 

$ 1 
— 

$ — 
— 

(a)  No amounts were classified as investing cash flows from operating leases for the year ended December 31, 2020.
(b)  Does not include ROU assets recorded as a result of the adoption of the new lease standard. 

(in millions)

Cash paid for amounts included in the measurement  

of lease liabilities(a)
Operating cash flows from operating leases
Operating cash flows from finance leases
Financing cash flows from finance leases

Lease assets obtained in exchange for new lease  

liabilities (non-cash)
Operating(b)
Finance

Year Ended December 31, 2019

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana Piedmont

$

$

285 
61 
111 

194 
251 

$ 34 
15 
6 

$ 44 
76 

$

$

131 
42 
21 

30 
175 

$ 53 
33 
5 

$ 78 
9 
16 

$ 30 
175 

$ — 
— 

$

2 
— 
1 

$ — 
— 

$ 7 
1 
— 

$

7 
— 
— 

$ — 
— 

$

1 
— 

(a)  No amounts were classified as investing cash flows from operating leases for the year ended December 31, 2019. 
(b)  Does not include ROU assets recorded as a result of the adoption of the new lease standard. 

Weighted average remaining lease term (years)

Operating leases
Finance leases

Weighted average discount rate(a)

Operating leases
Finance leases

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

December 31, 2020

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana Piedmont

10
13

9
19

10
15

12
17

3.8 %
8.4 %

3.4 %
11.6 %

3.8 %
11.9 %

3.9 %
12.4 %

8
11

3.8 %
8.2 %

17
— 

4.2 %
— %

18
25

4.2 %
11.9 %

5
— 

3.6 %
— %

(a)  The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke 
Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease 
term and as such may differ for individual leases, embedded leases or portfolios of leased assets.

150

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Weighted average remaining lease term (years)

Operating leases
Finance leases

Weighted average discount rate(a)

Operating leases
Finance leases

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

December 31, 2019

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana Piedmont

11
13

9
19

10
16

12
18

3.9 %
8.1 %

3.5 %
11.8 %

3.8 %
11.9 %

3.9 %
12.4 %

8
11

3.8 %
8.3 %

17
— 

4.2 %
— %

18
26

4.1 %
11.9 %

6
— 

3.6 %
— %

(a)  The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke 
Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease 
term and as such may differ for individual leases, embedded leases or portfolios of leased assets.

6.  DEBT AND CREDIT FACILITIES 

Summary of Debt and Related Terms

The following tables summarize outstanding debt.

December 31, 2020

(in millions)

Unsecured debt, maturing 2021-2078
Secured debt, maturing 2021-2052
First mortgage bonds, maturing 2021-2050(a)
Finance leases, maturing 2022-2051(b)
Tax-exempt bonds, maturing 2027-2041(c)
Notes payable and commercial paper(d)
Money pool/intercompany borrowings
Fair value hedge carrying value adjustment 
Unamortized debt discount and premium, net(e)
Unamortized debt issuance costs(f)

Weighted 
Average 
Interest Rate

3.71 %
2.67 %
4.00 %
6.96 %
0.75 %
0.51 %

Duke
Energy

$ 23,669 
4,270 
29,177 
845 
477 
3,407 
— 
4 
1,217 
(330)

Total debt 

3.62 %

$ 62,736 

Short-term notes payable and commercial paper 
Short-term money pool/intercompany borrowings 
Current maturities of long-term debt(g)
Total long-term debt(g)

(2,873)
— 
(4,238)
$ 55,625 

Duke
Energy
Carolinas

$ 1,150 
543 
10,008 
294 
— 
— 
806 
4 
(20)
(62)

$ 12,723 

— 
(506)
(506)
$ 11,711 

Progress
Energy

$ 3,150 
1,584 
14,100 
377 
48 
— 
3,119 
— 
(31)
(113)

$ 22,234 

— 
(2,969)
(1,426)
$ 17,839 

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

$ 1,180 
— 
1,850 
— 
77 
— 
194 
— 
(29)
(14)

Duke
Energy
Indiana

$

403 
— 
3,219 
10 
352 
— 
281 
— 
(18)
(25)

Piedmont

$ 2,800 
— 
— 
— 
— 
— 
530 
— 
(5)
(15)

$

350 
1,332 
6,225 
81 
— 
— 
196 
— 
(11)
(62)

$ 8,111 

$ 3,258 

$ 4,222 

$ 3,310 

— 
(196)
(823)
$ 7,092 

— 
(169)
(50)
$ 3,039 

— 
(131)
(70)
$ 4,021 

— 
(530)
(160)
$ 2,620 

$

700 
252 
7,875 
296 
48 
— 
445 
— 
(19)
(44)

$ 9,553 

— 
(295)
(603)
$ 8,655 

(a)  Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)  Duke Energy includes $24 million and $341 million of finance lease purchase accounting adjustments related to Duke Energy Progress and Duke Energy Florida, respectively, related to PPAs that are not accounted for as 

finance leases in their respective financial statements because of grandfathering provisions in GAAP.

(c)  Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility.
(d) 

Includes $625 million classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and 
intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy’s commercial paper program was 23 days.

(e)  Duke Energy includes $1,196 million and $117 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(f)  Duke Energy includes $33 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(g)  Refer to Note 17 for additional information on amounts from consolidated VIEs.

151

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
December 31, 2019

Duke
Energy
Progress

Duke
Energy
Florida

(in millions)

Unsecured debt, maturing 2020-2078
Secured debt, maturing 2020-2052
First mortgage bonds, maturing 2020-2049(a)
Finance leases, maturing 2022-2051(b)
Tax-exempt bonds, maturing 2022-2041(c)
Notes payable and commercial paper(d)
Money pool/intercompany borrowings
Fair value hedge carrying value adjustment 
Unamortized debt discount and premium, net(e)
Unamortized debt issuance costs(f)

Weighted 
Average 
Interest Rate

4.02 %
3.30 %
4.13 %
6.60 %
2.90 %
1.98 %

Duke
Energy

$ 22,477 
4,537 
27,977 
969 
730 
3,588 
— 
5 
1,294 
(316)

Total debt 

3.92 %

$ 61,261 

Short-term notes payable and commercial paper 
Short-term money pool/intercompany borrowings 
Current maturities of long-term debt(g)
Total long-term debt(g)

(3,135)
— 
(3,141)
$ 54,985 

Duke
Energy
Carolinas

$ 1,150 
544 
9,557 
179 
243 
— 
329 
5 
(23)
(55)

$11,929 

— 
(29)
(458)
$11,442 

Progress
Energy

$ 3,650 
1,722 
13,800 
405 
48 
— 
1,970 
— 
(29)
(111)

$ 21,455 

— 
(1,821)
(1,577)
$ 18,057 

Duke
Energy
Ohio

$ 1,110 
— 
1,449 
— 
77 
— 
337 
— 
(30)
(12)

Duke
Energy
Indiana Piedmont

$

405 
— 
3,169 
10 
362 
— 
180 
— 
(19)
(20)

$ 2,399 
— 
— 
— 
— 
— 
476 
— 
(2)
(13)

$

350 
1,387 
6,225 
98 
— 
— 
— 
— 
(11)
(62)

$ 7,987 

$ 2,931 

$ 4,087 

$ 2,860 

— 
— 
(571)
$ 7,416 

— 
(312)
— 
$ 2,619 

— 
(30)
(503)
$ 3,554 

— 
(476)
—
$ 2,384 

$

700 
335 
7,575 
307 
48 
— 
216 
— 
(17)
(40)

$ 9,124 

— 
(66)
(1,006)
$ 8,052 

(a)  Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)  Duke Energy includes $44 million and $419 million of finance lease purchase accounting adjustments related to Duke Energy Progress and Duke Energy Florida, respectively, related to PPAs that are not accounted for as 

finance leases in their respective financial statements because of grandfathering provisions in GAAP.

(c)  Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility.
(d) 

Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s 
ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy’s commercial paper programs was 14 days.

(e)  Duke Energy includes $1,275 million and $137 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(f)  Duke Energy includes $37 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(g)  Refer to Note 17 for additional information on amounts from consolidated VIEs.

Current Maturities of Long-Term Debt

The following table shows the significant components of Current maturities of Long-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants 

currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.

(in millions)

Unsecured Debt(a)
Duke Energy (Parent)
Piedmont
Duke Energy (Parent)
Duke Energy (Parent)
Duke Energy Florida
Secured Debt
Duke Energy Florida
First Mortgage Bonds
Duke Energy Carolinas
Duke Energy Florida
Duke Energy Progress
Duke Energy Progress
Other(c)

Current maturities of long-term debt

(a)  During October 2020, Progress Energy early retired $500 million of unsecured debt with an original maturity of January 15, 2021.
(b)  Debt has a floating interest rate.
(c) 

Includes finance lease obligations, amortizing debt and small bullet maturities.

152

Maturity Date

Interest Rate

December 31, 2020

May 2021
June 2021
September 2021
September 2021
November 2021

0.721 %(b)
4.240 %
3.550 %
1.800 %
0.482 %(b)

April 2021

0.972 %(b)

June 2021
August 2021
September 2021
September 2021

3.900 %
3.100 %
3.000 %
8.625 %

$

500 
160 
500 
750 
200 

250 

500 
300 
500 
100 
478 

$ 4,238 

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
 
Maturities and Call Options

The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable, 

commercial paper and money pool borrowings and debt issuance costs for the Subsidiary Registrants.

(in millions)

2021
2022
2023
2024
2025
Thereafter

Total long-term debt, including current maturities

December 31, 2020

Duke
Energy(a)

$ 4,238 
4,905 
3,356 
1,344 
3,153 
41,983 

$ 58,979 

Duke
Energy
Carolinas

$

506 
721 
1,008 
9 
310 
9,745 

Progress
Energy

$ 1,426 
1,736 
638 
76 
725 
14,802 

Duke
Energy
Progress

$

603 
1,208 
561 
10 
661 
6,274 

Duke
Energy
Florida

$

823 
78 
77 
66 
64 
6,878 

Duke
Energy
Ohio

$

50 
— 
325 
— 
270 
2,486 

Duke
Energy
Indiana

$

70 
84 
3 
4 
154 
3,818 

Piedmont

$

160 
— 
45 
40 
205 
2,350 

$12,299 

$ 19,403 

$ 9,317 

$ 7,986 

$ 3,131 

$ 4,133 

$ 2,800 

(a)  Excludes $1,346 million in purchase accounting adjustments related to the Progress Energy merger and the Piedmont acquisition.

The Duke Energy Registrants have the ability under certain debt facilities to call and repay the obligation prior to its scheduled maturity. Therefore, the actual 

timing of future cash repayments could be materially different than as presented above.

Short-Term Obligations Classified as Long-Term Debt

Tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder and certain commercial paper issuances and money pool 

borrowings are classified as Long-Term Debt on the Consolidated Balance Sheets. These tax-exempt bonds, commercial paper issuances and money pool borrowings, 
which are short-term obligations by nature, are classified as long-term due to Duke Energy’s intent and ability to utilize such borrowings as long-term financing. As 
Duke Energy’s Master Credit Facility and other bilateral letter of credit agreements have non-cancelable terms in excess of one year as of the balance sheet date, Duke 
Energy has the ability to refinance these short-term obligations on a long-term basis. The following tables show short-term obligations classified as long-term debt.

(in millions)

Tax-exempt bonds 

Commercial paper(a)
Total 

(in millions)

Tax-exempt bonds 

Commercial paper(a)
Total 

(a)  Progress Energy amounts are equal to Duke Energy Progress amounts.

Duke
Energy

$ 312 
625 

$ 937 

Duke
Energy

$ 312 
625 

$ 937 

Duke
Energy
Carolinas

$ — 
300 

$ 300 

Duke
Energy
Carolinas

$ — 
300 

$ 300 

December 31, 2020

Duke
Energy
Progress

$ — 
150 

$ 150 

December 31, 2019

Duke
Energy
Progress

$ — 
150 

$ 150 

Duke
Energy
Ohio

$ 27 
25 

$ 52 

Duke
Energy
Ohio

$ 27 
25 

$ 52 

Duke
Energy
Indiana

$ 285 
150 

$ 435 

Duke
Energy
Indiana

$ 285 
150 

$ 435 

153

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Summary of Significant Debt Issuances

The following tables summarize significant debt issuances (in millions).

Issuance Date

Maturity Date

Interest Rate

Unsecured Debt
May 2020(a)
May 2020(b)
August 2020(c)
September 2020(e)
September 2020(e)
First Mortgage Bonds
January 2020(f)
January 2020(f)
March 2020(g)
May 2020(b)
June 2020(b)
August 2020(h)

Total issuances

Jun 2030
Jun 2050
Feb 2022
Sep 2025
Jun 2030

Feb 2030
Aug 2049
Apr 2050
Jun 2030
Jun 2030
Aug 2050

2.450 %
3.350 %
0.400 %(d)
0.900 %
2.450 %

2.450 %
3.200 %
2.750 %
2.125 %
1.750 %
2.500 %

Duke
Energy

$ 500 
400 
700 
650 
350 

500 
400 
550 
400 
500 
600 

Duke
Energy
(Parent)

$ 500 
— 
— 
650 
350 

— 
— 
— 
— 
— 
— 

Year Ended December 31, 2020

Duke
Energy
Carolinas

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

$ — 
— 
— 
— 
— 

500 
400 
— 
— 
— 
— 

$ — 
— 
700 
— 
— 

— 
— 
— 
— 
— 
600 

$ — 
— 
— 
— 
— 

— 
— 
— 
— 
500 
— 

$ — 
— 
— 
— 
— 

— 
— 
— 
400 
— 
— 

$ — 
— 
— 
— 
— 

— 
— 
550 
— 
— 
— 

$ — 
400 
— 
— 
— 

— 
— 
— 
— 
— 
— 

$ 5,550 

$ 1,500 

$ 900 

$  1,300 

$ 500 

$

400 

$ 550 

$ 400 

(a)  Debt issued to repay $500 million borrowing made under Duke Energy (Parent) revolving credit facility in March 2020, and for general corporate purposes.
(b)  Debt issued to repay short-term debt and for general corporate purposes.
(c)  Debt issued to repay $700 million term loan due December 2020.
(d)  Debt issuance has a floating interest rate.
(e)  Debt issued to repay a portion of outstanding commercial paper, to repay a portion of Duke Energy (Parent)’s outstanding $1.7 billion term loan due March 2021 and for general corporate purposes.
(f)  Debt issued to repay at maturity $450 million first mortgage bonds due June 2020 and for general corporate purposes.
(g)  Debt issued to repay at maturity $500 million first mortgage bonds due July 2020 and to pay down short-term debt.
(h)  Debt issued to repay at maturity $300 million first mortgage bonds due September 2020 and for general corporate purposes.

154

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Issuance Date

Maturity Date

Interest Rate

Unsecured Debt
March 2019(a)
March 2019(a)
May 2019(e)
June 2019(a)
June 2019(a)
July 2019(g)
September 2019(g)
September 2019(g)
November 2019(h)
First Mortgage Bonds
January 2019(c)
January 2019(c)
March 2019(d)
August 2019(a)
August 2019(a)
September 2019(f)
November 2019(i)

Total issuances

Mar 2022
Mar 2022
Jun 2029
Jun 2029
Jun 2049
Jul 2049
Oct 2025
Oct 2029
Nov 2021

Feb 2029
Feb 2049
Mar 2029
Aug 2029
Aug 2049
Oct 2049
Dec 2029

2.538 %(b)
3.227 %
3.500 %
3.400 %
4.200 %
4.320 %
3.230 %
3.560 %
2.167 %(b)

3.650 %
4.300 %
3.450 %
2.450 %
3.200 %
3.250 %
2.500 %

Year Ended December 31, 2019

Duke
Energy
(Parent)

Duke
Energy
Carolinas

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

$

300 
300 
— 
600 
600 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 
— 

$ — 
— 
— 
— 
— 
— 
— 
— 
— 

— 
— 
— 
450 
350 
— 
— 

$ — 
— 
— 
— 
— 
— 
— 
— 
— 

— 
— 
600 
— 
— 
— 
— 

$ — 
— 
— 
— 
— 
— 
— 
— 
200 

— 
— 
— 
— 
— 
— 
700 

$ — 
— 
— 
— 
— 
40 
95 
75 
— 

400 
400 
— 
— 
— 
— 
— 

$ — 
— 
— 
— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
500 
— 

$ — 
— 
600 
— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 
— 

Duke
Energy

$ 300 
300 
600 
600 
600 
40 
95 
75 
200 

400 
400 
600 
450 
350 
500 
700 

$ 6,210 

$ 1,800 

$ 800 

$ 600 

$ 900 

$ 1,010 

$ 500 

$ 600 

(a)  Debt issued to pay down short-term debt and for general corporate purposes.
(b)  Debt issuance has a floating interest rate.
(c)  Debt issued to repay at maturity $450 million first mortgage bonds due April 2019, pay down short-term debt and for general corporate purposes.
(d)  Debt issued to fund eligible green energy projects in the Carolinas.
(e)  Debt issued to repay in full the outstanding $350 million Piedmont unsecured term loan due September 2019, pay down short-term debt and for general corporate purposes.
(f)  Debt issued to retire $150 million of pollution control bonds, pay down short-term debt and for general corporate purposes.
(g)  Debt issued to repay at maturity $100 million debentures due October 2019, pay down short-term debt and for general corporate purposes.
(h)  Debt issued to fund storm restoration costs and for general corporate purposes.
(i)  Debt issued to reimburse the payment of existing and new Eligible Green Expenditures in Florida.

155

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)AVAILABLE CREDIT FACILITIES

Master Credit Facility

In March 2020, Duke Energy amended its existing $8 billion Master 
Credit Facility to extend the termination date to March 2025. The Duke Energy 
Registrants, excluding Progress Energy, have borrowing capacity under the 
Master Credit Facility up to a specified sublimit for each borrower. Duke Energy 

has the unilateral ability at any time to increase or decrease the borrowing 
sublimits of each borrower, subject to a maximum sublimit for each borrower. 
The amount available under the Master Credit Facility has been reduced to 
backstop issuances of commercial paper, certain letters of credit and variable-
rate demand tax-exempt bonds that may be put to the Duke Energy Registrants 
at the option of the holder. 

The table below includes the current borrowing sublimits and available capacity under these credit facilities. 

(in millions)

Facility size(a)
Reduction to backstop issuances 

Commercial paper(b)
Outstanding letters of credit 
Tax-exempt bonds 

Available capacity 

December 31, 2020

Duke
Energy

Duke
Energy
(Parent)

Duke
Energy
Carolinas

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

$ 8,000 

$ 2,650 

$ 1,475 

$ 1,250 

$ 800 

$ 625 

$ 600 

$ 600 

(2,239)
(40)
(81)
$ 5,640 

— 
(34)
— 
$ 2,616 

(736)
(4)
— 
735 

$

(407)
(2)
— 
841 

$

(179)
— 
— 
$ 621 

(176)
— 
— 
$ 449 

(257)
— 
(81)
$ 262 

(484)
—
— 
$ 116 

(a)  Represents the sublimit of each borrower.
(b)  Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified 

as Long-Term Debt Payable to Affiliated Companies in the Consolidated Balance Sheets.

Term Loan Facility

In response to market volatility and ongoing liquidity impacts from 
COVID-19, in March 2020, Duke Energy (Parent) entered into a $1.5 billion,  
364-day Term Loan Credit Agreement, borrowing the full $1.5 billion available on 
March 19, 2020. The term loan contained a provision for increasing the amount 
available for borrowing by up to $500 million. Duke Energy (Parent) exercised this 
provision on March 27, 2020, borrowing an additional $188 million. Proceeds were 
used to reduce outstanding commercial paper and for general corporate purposes. 
The loan was repaid by Duke Energy (Parent) as of December 31, 2020. Refer to 
Note 1 for additional information on the COVID-19 pandemic.

Three-Year Revolving Credit Facility

Duke Energy (Parent) has a $1 billion revolving credit facility. The facility 

had an initial termination date of June 2020, but in May 2019, Duke Energy 
extended the termination date of the facility to May 2022. Borrowings under this 
facility will be used for general corporate purposes. As of December 31, 2020, 
$500 million has been drawn under this facility. This balance is classified as 
Long-term debt on Duke Energy’s Consolidated Balance Sheets. Any undrawn 
commitments can be drawn, and borrowings can be prepaid, at any time 
throughout the term of the facility. During the first quarter of 2020, an additional 
$500 million was drawn under this facility to manage liquidity impacts from 
COVID-19. The additional $500 million was paid down during the second quarter 
of 2020. The terms and conditions of the facility are generally consistent with 
those governing Duke Energy’s Master Credit Facility.

Duke Energy Progress Term Loan Facility

In December 2018, Duke Energy Progress entered into a two-year term 

loan facility with commitments totaling $700 million. Borrowings under the 
facility were used to pay storm-related costs, pay down commercial paper and 

156

to partially finance an upcoming bond maturity. As of December 31, 2019, the 
entire $700 million had been drawn under the term loan and was classified as 
Current maturities of long-term debt on Duke Energy Progress’ Consolidated 
Balance Sheets. In August 2020, Duke Energy Progress repaid its $700 million 
two-year term loan facility.

Other Debt Matters

In September 2019, Duke Energy filed a Form S-3 with the SEC. Under 

this Form S-3, which is uncapped, the Duke Energy Registrants, excluding 
Progress Energy, may issue debt and other securities, including preferred stock, 
in the future at amounts, prices and with terms to be determined at the time of 
future offerings. The registration statement was filed to replace a similar prior 
filing upon expiration of its three-year term and also allows for the issuance of 
common and preferred stock by Duke Energy. 

Duke Energy has an effective Form S-3 with the SEC to sell up to $3 billion 

of variable denomination floating-rate demand notes, called PremierNotes. 
The Form S-3 states that no more than $1.5 billion of the notes will be 
outstanding at any particular time. The notes are offered on a continuous basis 
and bear interest at a floating rate per annum determined by the Duke Energy 
PremierNotes Committee, or its designee, on a weekly basis. The interest rate 
payable on notes held by an investor may vary based on the principal amount 
of the investment. The notes have no stated maturity date, are non-transferable 
and may be redeemed in whole or in part by Duke Energy or at the investor’s 
option at any time. The balance as of December 31, 2020, and 2019, was 
$1,168 million and $1,049 million, respectively. The notes are short-term debt 
obligations of Duke Energy and are reflected as Notes payable and commercial 
paper on Duke Energy’s Consolidated Balance Sheets.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
Money Pool

Restrictive Debt Covenants

The Subsidiary Registrants, excluding Progress Energy, are eligible to 
receive support for their short-term borrowing needs through participation 
with Duke Energy and certain of its subsidiaries in a money pool arrangement. 
Under this arrangement, those companies with short-term funds may provide 
short-term loans to affiliates participating in this arrangement. The money 
pool is structured such that the Subsidiary Registrants, excluding Progress 
Energy, separately manage their cash needs and working capital requirements. 
Accordingly, there is no net settlement of receivables and payables between 
money pool participants. Duke Energy (Parent), may loan funds to its 
participating subsidiaries, but may not borrow funds through the money pool. 
Accordingly, as the money pool activity is between Duke Energy and its wholly 
owned subsidiaries, all money pool balances are eliminated within Duke 
Energy’s Consolidated Balance Sheets.

Money pool receivable balances are reflected within Notes receivable 
from affiliated companies on the Subsidiary Registrants’ Consolidated Balance 
Sheets. Money pool payable balances are reflected within either Notes payable 
to affiliated companies or Long-Term Debt Payable to Affiliated Companies on 
the Subsidiary Registrants’ Consolidated Balance Sheets.

7.  GUARANTEES AND INDEMNIFICATIONS 

Duke Energy has various financial and performance guarantees and 
indemnifications with non-consolidated entities, which are issued in the normal 
course of business. As discussed below, these contracts include performance 
guarantees, standby letters of credit, debt guarantees and indemnifications. 
Duke Energy enters into these arrangements to facilitate commercial 
transactions with third parties by enhancing the value of the transaction to the 
third party. At December 31, 2020, Duke Energy does not believe conditions are 
likely for significant performance under these guarantees, except for ACP as 
described below. To the extent liabilities are incurred as a result of the activities 
covered by the guarantees, such liabilities are included on the accompanying 
Consolidated Balance Sheets.

On January 2, 2007, Duke Energy completed the spin-off of its previously 

wholly owned natural gas businesses to shareholders. Guarantees issued by 
Duke Energy or its affiliates, or assigned to Duke Energy prior to the spin-off, 
remained with Duke Energy subsequent to the spin-off. Guarantees issued 
by Spectra Capital or its affiliates prior to the spin-off remained with Spectra 
Capital subsequent to the spin-off, except for guarantees that were later 
assigned to Duke Energy. Duke Energy has indemnified Spectra Capital against 
any losses incurred under certain of the guarantee obligations that remain 
with Spectra Capital. At December 31, 2020, the maximum potential amount 
of future payments associated with these guarantees were $56 million, the 
majority of which expires by 2028.

In October 2017, ACP executed a $3.4 billion revolving credit facility with 
a stated maturity date of October 2021. Duke Energy entered into a guarantee 
agreement to support its share of the ACP revolving credit facility. In July 
2020, ACP reduced the size of the credit facility to $1.9 billion. Duke Energy’s 
maximum exposure to loss under the terms of the guarantee is $860 million 
as of December 31, 2020. This amount represents 47% of the outstanding 
borrowings under the credit facility.

Duke Energy recognized the $860 million within Other Current Liabilities 

on the Consolidated Balance Sheets at December 31, 2020, of which $95 million 
was previously recognized due the adoption of new guidance for credit losses 
effective January 1, 2020. See Notes 3 and 12 for more information. The 
remaining reserve for credit losses for financial guarantees of $4 million at 
December 31, 2020, is included within Other Noncurrent Liabilities on the 

157

The Duke Energy Registrants’ debt and credit agreements contain various 
financial and other covenants. Duke Energy’s Master Credit Facility contains a 
covenant requiring the debt-to-total capitalization ratio not to exceed 65% for 
each borrower, excluding Piedmont, and 70% for Piedmont. Failure to meet those 
covenants beyond applicable grace periods could result in accelerated due dates 
and/or termination of the agreements. As of December 31, 2020, each of the Duke 
Energy Registrants was in compliance with all covenants related to their debt 
agreements. In addition, some credit agreements may allow for acceleration of 
payments or termination of the agreements due to nonpayment, or acceleration of 
other significant indebtedness of the borrower or some of its subsidiaries. None of 
the debt or credit agreements contain material adverse change clauses.

Other Loans

As of December 31, 2020, and 2019, Duke Energy had loans outstanding 
of $817 million, including $35 million at Duke Energy Progress and $777 million, 
including $36 million at Duke Energy Progress, respectively, against the cash 
surrender value of life insurance policies it owns on the lives of its executives. 
The amounts outstanding were carried as a reduction of the related cash 
surrender value that is included in Other within Other Noncurrent Assets on the 
Consolidated Balance Sheets. 

Duke Energy’s Consolidated Balance Sheets. Management considers financial 
guarantees for evaluation under this standard based on the anticipated amount 
outstanding at the time of default. The reserve for credit losses is based on the 
evaluation of the contingent components of financial guarantees. Management 
evaluates the risk of default, exposure and length of time remaining in the period 
for each contract.

In addition to the Spectra Capital and ACP revolving credit facility 
guarantees above, Duke Energy has issued performance guarantees to 
customers and other third parties that guarantee the payment and performance 
of other parties, including certain non-wholly owned entities, as well as 
guarantees of debt of certain non-consolidated entities. If such entities were to 
default on payments or performance, Duke Energy would be required under the 
guarantees to make payments on the obligations of these entities. The maximum 
potential amount of future payments required under these guarantees as of 
December 31, 2020, was $56 million of which $53 million expire between 2021 
and 2030, with the remaining performance guarantees having no contractual 
expiration. Additionally, certain guarantees have uncapped maximum potential 
payments; however, Duke Energy does not believe these guarantees will have a 
material effect on its results of operations, cash flows or financial position.
Duke Energy uses bank-issued standby letters of credit to secure the 
performance of wholly owned and non-wholly owned entities to a third party 
or customer. Under these arrangements, Duke Energy has payment obligations 
to the issuing bank that are triggered by a draw by the third party or customer 
due to the failure of the wholly owned or non-wholly owned entity to perform 
according to the terms of its underlying contract. At December 31, 2020, Duke 
Energy had issued a total of $566 million in letters of credit, which expire 
between 2021 and 2023. The unused amount under these letters of credit was 
$76 million.

Duke Energy recognized $11 million and $23 million as of December 31, 

2020, and 2019, respectively, primarily in Other within Other Noncurrent 
Liabilities on the Consolidated Balance Sheets, for the guarantees discussed 
above. As current estimates change, additional losses related to guarantees and 
indemnifications to third parties, which could be material, may be recorded by 
the Duke Energy Registrants in the future. 

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)8.  JOINT OWNERSHIP OF GENERATING AND TRANSMISSION FACILITIES

The Duke Energy Registrants maintain ownership interests in certain 

jointly owned generating and transmission facilities. The Duke Energy 
Registrants are entitled to a share of the generating capacity and output of each 
unit equal to their respective ownership interests. The Duke Energy Registrants 
pay their ownership share of additional construction costs, fuel inventory 

purchases and operating expenses. The Duke Energy Registrants share of 
revenues and operating costs of the jointly owned facilities is included within 
the corresponding line in the Consolidated Statements of Operations. Each 
participant in the jointly owned facilities must provide its own financing.

The following table presents the Duke Energy Registrants’ interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. 

All facilities are operated by the Duke Energy Registrants and are included in the Electric Utilities and Infrastructure segment.

(in millions except for ownership interest)

Duke Energy Carolinas 
Catawba (units 1 and 2)(a)
W.S. Lee CC(b)
Duke Energy Indiana 
Gibson (unit 5)(c)
Vermillion(d)
Transmission and local facilities(c)

(a) 
(b) 
(c) 
(d) 

Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA.
Jointly owned with NCEMC.
Jointly owned with WVPA and IMPA.
Jointly owned with WVPA.

9.  ASSET RETIREMENT OBLIGATIONS

Duke Energy records an ARO when it has a legal obligation to incur 
retirement costs associated with the retirement of a long-lived asset and the 
obligation can be reasonably estimated. Certain assets of the Duke Energy 
Registrants have an indeterminate life, such as transmission and distribution 
facilities, and thus the fair value of the retirement obligation is not reasonably 
estimable. A liability for these AROs will be recorded when a fair value is 
determinable.

December 31, 2020

Ownership 
Interest

Property, Plant 
and Equipment

Accumulated 
Depreciation

Construction Work in 
Progress

19.25 %
87.27 %

50.05 %
62.50 %
Various

$ 1,017 
632 

447 
174 
5,817 

$ 518 
49 

199 
101 
1,508 

$ 23 
1 

4 
1 
150 

The Duke Energy Registrants’ regulated operations accrue costs of 

removal for property that does not have an associated legal retirement 
obligation based on regulatory orders from state commissions. These costs 
of removal are recorded as a regulatory liability in accordance with regulatory 
accounting treatment. The Duke Energy Registrants do not accrue the estimated 
cost of removal for any nonregulated assets. See Note 3 for the estimated cost 
of removal for assets without an associated legal retirement obligation, which 
are included in Regulatory liabilities on the Consolidated Balance Sheets.

The following table presents the AROs recorded on the Consolidated Balance Sheets.

(in millions)

Decommissioning of nuclear power facilities(a)
Closure of ash impoundments
Other
Total asset retirement obligation
Less: Current portion

Total noncurrent asset retirement obligation

December 31, 2020

Duke 
Energy

$ 6,845 
5,778 

381 
$ 13,004 
718 

$ 12,286 

Duke 
Energy 
Carolinas

$ 2,695 
2,597 

58 
$ 5,350 
264 

Progress 
Energy

$ 4,101 
1,973 

75 
$ 6,149 
283 

$ 5,086 

$ 5,866 

Duke 
Energy 
Progress

$ 3,642 
1,950 

43 
$ 5,635 
283 

$ 5,352 

Duke 
Energy 
Florida

Duke 
Energy 
Ohio

$ 459 
23 

32 
$ 514 
— 

$ 514 

$ — 
67 

44 
$111 
3 

$108 

Duke 
Energy 
Indiana

$ — 
1,140 

36 
$ 1,176 
168 

$ 1,008 

Piedmont

$ — 
— 

20 
$ 20 
— 

$ 20 

(a)  Duke Energy amount includes purchase accounting adjustments related to the merger with Progress Energy.

158

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
Nuclear Decommissioning Liability

Nuclear Operating Licenses

AROs related to nuclear decommissioning are based on site-specific 

Operating licenses for nuclear units are potentially subject to extension. 

cost studies. The NCUC, PSCSC and FPSC require updated cost estimates for 
decommissioning nuclear plants every five years.

The following table summarizes information about the most recent site-

specific nuclear decommissioning cost studies. Decommissioning costs are 
stated in 2018 or 2019 dollars, depending on the year of the cost study, and 
include costs to decommission plant components not subject to radioactive 
contamination.

(in millions)

Duke Energy
Duke Energy Carolinas(b)(c)
Duke Energy Progress(d)
Duke Energy Florida(e)

Annual Funding
Requirement(a)

Decommissioning
Costs(a)

$ 27 
— 
27 
— 

$

9,105 
4,365 
4,181 
559 

Year of Cost 
Study

2018 or 2019
2018
2019
N/A

(a)  Amounts for Progress Energy equal the sum of Duke Energy Progress and Duke Energy Florida.
(b)  Decommissioning cost for Duke Energy Carolinas reflects its ownership interest in jointly owned reactors. 
Other joint owners are responsible for decommissioning costs related to their interest in the reactors.

(c)  Duke Energy Carolinas’ site-specific nuclear decommissioning cost study completed in 2018 was filed 
with the NCUC and PSCSC in 2019. A new funding study was also completed and filed with the NCUC 
and PSCSC in 2019.

(d)  Duke Energy Progress’ site-specific nuclear decommissioning cost study completed in 2019 was filed 

with the NCUC and PSCSC in March 2020. Duke Energy Progress also completed a funding study, which 
was filed with the NCUC and PSCSC in July 2020.

(e)  During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal 

River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party 
rather than a cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and 
August 2020, respectively. See Note 3 for more information.

Nuclear Decommissioning Trust Funds

Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida 
each maintain NDTFs that are intended to pay for the decommissioning costs 
of their respective nuclear power plants. The NDTF investments are managed 
and invested in accordance with applicable requirements of various regulatory 
bodies including the NRC, FERC, NCUC, PSCSC, FPSC and the IRS. 

Use of the NDTF investments is restricted to nuclear decommissioning 

activities including license termination, spent fuel and site restoration. 
The license termination and spent fuel obligations relate to contaminated 
decommissioning and are recorded as AROs. The site restoration obligation 
relates to non-contaminated decommissioning and is recorded to cost of 
removal within Regulatory liabilities on the Consolidated Balance Sheets.
The following table presents the fair value of NDTF assets 
legally restricted for purposes of settling AROs associated with nuclear 
decommissioning. Duke Energy Florida entered into an agreement with a third 
party to decommission Crystal River Unit 3 and was granted an exemption 
from the NRC, which allows for use of the NDTF for all aspects of nuclear 
decommissioning. The entire balance of Duke Energy Florida’s NDTF may 
be applied toward license termination, spent fuel and site restoration costs 
incurred to decommission Crystal River Unit 3 and is excluded from the table 
below. See Note 16 for additional information related to the fair value of the 
Duke Energy Registrants’ NDTFs. 

(in millions)
Duke Energy
Duke Energy Carolinas
Duke Energy Progress

December 31,

2020
$ 7,726
4,381 
3,345 

2019
$ 6,766 
3,837 
2,929 

159

The following table includes the current expiration of nuclear operating licenses. 

Unit

Duke Energy Carolinas
Catawba Units 1 and 2
McGuire Unit 1
McGuire Unit 2
Oconee Units 1 and 2
Oconee Unit 3
Duke Energy Progress
Brunswick Unit 1
Brunswick Unit 2
Harris
Robinson

Year of Expiration

2043
2041
2043
2033
2034

2036
2034
2046
2030

The NRC has acknowledged permanent cessation of operation and permanent 
removal of fuel from the reactor vessel at Crystal River Unit 3. Therefore, the license 
no longer authorizes operation of the reactor. During 2019, Duke Energy Florida 
entered into an agreement for the accelerated decommissioning of Crystal River 
Unit 3. Regulatory approval was received from the NRC and the FPSC in April 2020 
and August 2020, respectively. See Note 3 for more information. 

Closure of Ash Impoundments

The Duke Energy Registrants are subject to state and federal regulations 

covering the closure of coal ash impoundments, including the EPA CCR rule 
and the Coal Ash Act, and other agreements. AROs recorded on the Duke 
Energy Registrants’ Consolidated Balance Sheets include the legal obligation for 
closure of coal ash basins and the disposal of related ash as a result of these 
regulations and agreements. 

The ARO amount recorded on the Consolidated Balance Sheets is based 

upon estimated closure costs for impacted ash impoundments. The amount 
recorded represents the discounted cash flows for estimated closure costs 
based upon specific closure plans. Actual costs to be incurred will be dependent 
upon factors that vary from site to site. The most significant factors are the 
method and time frame of closure at the individual sites. Closure methods 
considered include removing the water from ash basins, consolidating material 
as necessary and capping the ash with a synthetic barrier, excavating and 
relocating the ash to a lined structural fill or lined landfill or recycling the ash for 
concrete or some other beneficial use. The ultimate method and timetable for 
closure will be in compliance with standards set by federal and state regulations 
and other agreements. The ARO amount will be adjusted as additional 
information is gained through the closure and post-closure process, including 
acceptance and approval of compliance approaches, which may change 
management assumptions, and may result in a material change to the balance. 
See ARO Liability Rollforward section below for information on revisions made to 
the coal ash liability during 2020 and 2019.

Asset retirement costs associated with the AROs for operating plants and 
retired plants are included in Net property, plant and equipment and Regulatory 
assets, respectively, on the Consolidated Balance Sheets. See Note 3 for 
additional information on Regulatory assets related to AROs.

Cost recovery for future expenditures will be pursued through the normal 
ratemaking process with federal and state utility commissions, which permit recovery 
of necessary and prudently incurred costs associated with Duke Energy’s regulated 
operations. See Note 3 for additional information on recovery of coal ash costs. 

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)ARO Liability Rollforward

The following tables present changes in the liability associated with AROs.

(in millions)

Duke  
Energy

Duke 
Energy 
Carolinas

Progress 
Energy

Duke 
Energy 
Progress

Duke 
Energy 
Florida

Duke 
Energy 
Ohio

Balance at December 31, 2018

$ 10,467 

$ 3,949 

$ 5,411 

$ 4,820 

$

591 

$

508 

(895)

25 

3,213 

13,318 

542 

(724)

22 

(154)

235 

(329)

18 

1,861 

5,734 

258 

(198)

— 

(444)

252 

(499)

7 

1,300 

6,471 

246 

(451)

5 

(122)

227 

(460)

— 

1,306 

5,893 

225 

(358)

— 

(125)

25 

(39)

7 

(6)

578 

21 

(93)

5 

3 

Duke 
Energy 
Indiana

$

722 

Piedmont

$

19 

28 

(54)

— 

136 

832 

33 

(74)

— 

385 

1 

— 

— 

(3)

17 

1 

— 

— 

2

93 

3 

(12)

— 

(4)

80 

4 

(2)

— 

29 

Accretion expense(a)

Liabilities settled(b)

Liabilities incurred in the current year

Revisions in estimates of cash flows(c)

Balance at December 31, 2019

Accretion expense(a)

Liabilities settled(b)

Liabilities incurred in the current year

Revisions in estimates of cash flows(d)

Balance at December 31, 2020

$ 13,004 

$ 5,350 

$ 6,149 

$ 5,635 

$

514 

$

111 

$ 1,176 

$

20 

(a)  Substantially all accretion expense for the years ended December 31, 2020, and 2019, relates to Duke Energy’s regulated operations and has been deferred in accordance with regulatory accounting treatment.
(b)  Amounts primarily relate to ash impoundment closures and nuclear decommissioning.
(c)  Amounts primarily relate to increases in closure estimates for certain ash impoundments as a result of the NCDEQ’s April 1, 2019, Order and the related settlement agreement dated December 31, 2019.
(d)  Primarily relates to decreases due to revised basin closure cost estimates, partially offset by increases related to new closure plan approvals, post closure maintenance and beneficiation costs. Duke Energy Indiana 

estimates also include the impacts of closure estimates for certain ash impoundments due to the impact of Hoosier Environmental Council’s petition filed with the court challenging the Indiana Department of Environmental 
Management’s partial approval of Duke Energy Indiana’s ash pond closure plan. See Note 4 for more information on Hoosier Environmental Council’s petition. The incremental amount recorded represents the discounted cash 
flows for estimated closure costs based upon the probability weightings of the potential closure methods as evaluated on a site-by-site basis.

160

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)10.  PROPERTY, PLANT AND EQUIPMENT

The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants.

(in millions)

Land 
Plant – Regulated 

Electric generation, distribution and transmission 
Natural gas transmission and distribution 
Other buildings and improvements 

Plant – Nonregulated 

Electric generation, distribution and transmission
Other buildings and improvements 

Nuclear fuel 
Equipment 
Construction in process 
Other
Total property, plant and equipment(a)(e)
Total accumulated depreciation – regulated(b)(c)
Total accumulated depreciation – nonregulated(d)(e)
Generation facilities to be retired, net

December 31, 2020

Average
Remaining
Useful Life
(Years)

Duke
Energy

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

$

2,046 

$

536  $

908 

$

463 

$

445 

$

171 

$

118 

$

279 

39
54
36

27
10

15

14

117,107 
10,799 
2,038 

5,444 
519 
3,284 
2,608 
6,645 
5,090 
155,580 
(46,216)
(2,611)
29 

44,059 
— 
740 

50,785 
— 
459 

— 
— 
1,837 
620 
1,645 
1,203 
50,640 
(17,453)
— 
— 

— 
— 
1,447 
759 
2,013 
1,521 
57,892 
(18,368)
— 
29 

31,375 
— 
197 

— 
— 
1,447 
498 
709 
1,070 
35,759 
(12,801)
— 
29 

19,410 
— 
262 

— 
— 
— 
261 
1,304 
441 
22,123 
(5,560)
— 
— 

6,255 
3,136 
374 

— 
— 
— 
385 
407 
294 
11,022 
(3,013)
— 
— 

16,008 
— 
300 

— 
— 
— 
238 
409 
309 
17,382 
(5,661)
— 
— 

— 
7,663 
165 

— 
— 
— 
122 
581 
324 
9,134 
(1,749)
— 
— 

Total net property, plant and equipment 

$106,782 

$ 33,187  $ 39,553 

$

22,987 

$16,563 

$ 8,009 

$11,721 

$ 7,385 

(a) 

(b) 
(c) 
(d) 
(e) 

Includes finance leases of $832 million, $335 million, $416 million, $297 million, $119 million and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke 
Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $141 million, $24 million and $117 million, respectively, of accumulated 
amortization of finance leases.
Includes $1,832 million, $1,010 million, $822 million and $822 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
Includes accumulated amortization of finance leases of $12 million, $23 million and $3 million at Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively.
Includes accumulated amortization of finance leases of $23 million at Duke Energy.
Includes gross property, plant and equipment cost of consolidated VIEs of $6,394 million and accumulated depreciation of consolidated VIEs of $1,242 million at Duke Energy. 

In 2020, Duke Energy evaluated recoverability of its renewable merchant 
plants principally located in the Electric Reliability Council of Texas West market 
and in the PJM West market due to declining market pricing and declining 
long-term forecasted energy prices, primarily driven by lower forecasted natural 
gas prices. Duke Energy determined that the assets were not impaired because 

the carrying value of $210 million approximates the aggregate estimated future 
undiscounted cash flows. A continued decline in energy market pricing would 
likely result in a future impairment. Duke Energy retained 51% ownership 
interest in these facilities following the 2019 transaction to sell a minority 
interest in certain renewable assets. See Note 1 for further information.

161

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
(in millions)

Land 
Plant – Regulated 

Electric generation, distribution and transmission 
Natural gas transmission and distribution 
Other buildings and improvements 

Plant – Nonregulated 

Electric generation, distribution and transmission
Other buildings and improvements 

Nuclear fuel 
Equipment 
Construction in process 
Other
Total property, plant and equipment(a)(e)
Total accumulated depreciation – regulated(b)(c)
Total accumulated depreciation – nonregulated(d)(e)
Generation facilities to be retired, net

December 31, 2019

Average
Remaining
Useful Life
(Years)

Duke
Energy

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

$

2,091 

$

520  $

884 

$

449 

$

435 

$

150 

$

117 

$

388 

39
54
32

28
9

13

13

111,739 
9,839 
1,810 

5,103 
488 
3,253 
2,313 
6,102 
4,916 
147,654 
(43,419)
(2,354)
246 

42,723 
— 
714 

48,142 
— 
401 

— 
— 
1,891 
546 
1,389 
1,139 
48,922 
(16,525)
— 
— 

— 
— 
1,362 
665 
2,149 
1,467 
55,070 
(17,159)
— 
246 

30,018 
— 
162 

— 
— 
1,362 
452 
1,114 
1,046 
34,603 
(11,915)
— 
246 

18,124 
— 
239 

— 
— 
— 
213 
1,035 
411 
20,457 
(5,236)
— 
— 

5,838 
2,892 
269 

— 
— 
— 
319 
504 
269 
10,241 
(2,843)
— 
— 

15,032 
— 
278 

— 
— 
— 
205 
381 
292 
16,305 
(5,233)
— 
— 

— 
6,947 
148 

— 
— 
— 
128 
531 
304 
8,446 
(1,681)
— 
— 

Total net property, plant and equipment 

$ 102,127 

$ 32,397  $ 38,157 

$

22,934 

$15,221 

$ 7,398 

$11,072 

$ 6,765 

(a) 

(b) 
(c) 
(d) 
(e) 

Includes finance leases of $952 million, $211 million, $443 million, $308 million, $135 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke 
Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $143 million, $17 million and $126 million, respectively, of accumulated 
amortization of finance leases.
Includes $1,807 million, $1,082 million, $725 million and $725 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
Includes accumulated amortization of finance leases of $6 million, $13 million, and $3 million at Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively.
Includes accumulated amortization of finance leases of $20 million at Duke Energy.
Includes gross property, plant and equipment cost of consolidated VIEs of $5,747 million and accumulated depreciation of consolidated VIEs of $1,041 million at Duke Energy.

The following tables present capitalized interest, which includes the debt component of AFUDC.

(in millions)

Duke Energy
Duke Energy Carolinas
Progress Energy
Duke Energy Progress
Duke Energy Florida
Duke Energy Ohio
Duke Energy Indiana
Piedmont

Years Ended December 31,

2020

$112 
28 
17 
12 
5 
26 
10 
8 

2019

2018

$ 159 
30 
31 
28 
3 
22 
26 
26 

$161 
35 
51 
26 
25 
17 
27 
17 

162

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
11.  GOODWILL AND INTANGIBLE ASSETS

GOODWILL

Duke Energy

The following table presents goodwill by reportable segment for Duke Energy included on Duke Energy’s Consolidated Balance Sheets at December 31, 2020, and 2019. 

(in millions)

Goodwill Balance at  

December 31, 2019

Accumulated impairment  

charges

Goodwill balance at  

December 31, 2019, adjusted 
for accumulated impairment 
charges

Goodwill Balance at  
December 31, 2020
Accumulated impairment 

charges

Goodwill balance at  

December 31, 2020, 
adjusted for accumulated 
impairment charges

Electric 
Utilities and 
Infrastructure

Gas  
Utilities and  
Infrastructure

Commercial
Renewables

Total

$

17,379 $

1,924 $

122

$ 19,425

Duke Energy Ohio

Duke Energy Ohio’s Goodwill balance of $920 million, allocated $596 
million to Electric Utilities and Infrastructure and $324 million to Gas Utilities and 
Infrastructure, is presented net of accumulated impairment charges of $216 million 
on the Consolidated Balance Sheets at December 31, 2020, and 2019.

—

—

(122)

(122)

Progress Energy

Progress Energy’s Goodwill is included in the Electric Utilities and 

Infrastructure segment and there are no accumulated impairment charges.

$

$

17,379 $

1,924 $ — $ 19,303

Piedmont

17,379 $

1,924 $

122

$ 19,425

Piedmont’s Goodwill is included in the Gas Utilities and Infrastructure 

segment and there are no accumulated impairment charges. 

—

—

(122)

(122)

$

17,379 $

1,924 $ — $ 19,303

(a)  Duke Energy evaluated the recoverability of goodwill during 2018 and 2017 and recorded impairment 

charges of $93 million and $29 million, respectively, related to the Commercial Renewables reporting unit 
included in Impairment charges on Duke Energy’s Consolidated Statements of Operations. The fair value of 
the reporting unit was determined based on the income approach and market approach in 2018 and 2017, 
respectively. See “Goodwill Impairment Testing” below for the results of the 2020 goodwill impairment test. 

Goodwill Impairment Testing

Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont are required 

to perform an annual goodwill impairment test as of the same date each year 
and, accordingly, perform their annual impairment testing of goodwill as of 
August 31. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update 
their test between annual tests if events or circumstances occur that would more 
likely than not reduce the fair value of a reporting unit below its carrying value. As 
the fair value for Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont 
exceeded their respective carrying values at the date of the annual impairment 
analysis, no goodwill impairment charges were recorded in 2020. 

INTANGIBLE ASSETS

The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the 

Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2020, and 2019.

(in millions)

Emission allowances 
Renewable energy certificates 
Natural gas, coal and power contracts 
Renewable operating and development projects
Other 

Total gross carrying amounts 

Accumulated amortization – natural gas, coal and power contracts 
Accumulated amortization – renewable operating and development projects
Accumulated amortization – other 
Total accumulated amortization 

Duke 
Energy
Carolinas

Duke
Energy

Progress
Energy

December 31, 2020

Duke 
Energy
Progress

Duke 
Energy
Florida

$

8
196 
24 
107 
20 

355 

(23)
(34)
(3)
(60)

$ —
65 
—
—
—

65 

—
—
—
—

$

5
130 
—
—
—

135 

—
—
—
—

$

2
130 
—
—
—

132 

—
—
—
—

$ 3
—
—
—
—

3

—
—
—
—

Total intangible assets, net 

$

295

$

65 

$135 

$ 132 

$ 3

$

163

Duke 
Energy
Ohio

$ —
1
—
—
—

1

—
—
—
—

1

Duke 
Energy
Indiana

Piedmont

$

2
—
24
—
—

26

(23)
—
—
(23)

$ —
—
—
—
—

—

—
—
—
—

$

3

$ —

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)(in millions)

Emission allowances 
Renewable energy certificates 
Natural gas, coal and power contracts 
Renewable operating and development projects
Other 

Total gross carrying amounts 

Accumulated amortization – natural gas, coal and power contracts 
Accumulated amortization – renewable operating and development projects
Accumulated amortization – other 
Total accumulated amortization 

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

December 31, 2019

Duke
Energy
Progress

Duke
Energy
Florida

$

18
172
24
89
2

305

(21)
(34)
(1)
(56)

$ —
53
—
—
—

53

—
—
—
—

53

$

5
118
—
—
—

123

—
—
—
—

$

2
118
—
—
—

120

—
—
—
—

$ 3
—
—
—
—

3

—
—
—
—

Duke
Energy
Ohio

$ —
1
—
—
—

1

—
—
—
—

1

Duke
Energy
Indiana

Piedmont

$ 12
—
24
—
—

36

(21)
—
—
(21)

$ —
—
—
—
—

—

—
—
—
—

$ 15

$ —

Total intangible assets, net 

$

249

$

$ 123

$ 120

$ 3

$

Amortization Expense

Amortization expense amounts for natural gas, coal and power contracts, renewable operating projects and other intangible assets are immaterial for the years 

ended December 31, 2020, 2019 and 2018, and are expected to be immaterial for the next five years as of December 31, 2020.

12.  INVESTMENTS IN UNCONSOLIDATED AFFILIATES

EQUITY METHOD INVESTMENTS

Investments in affiliates that are not controlled by Duke Energy, but over which it has significant influence, are accounted for using the equity method. 

The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in 

earnings, by segment.

(in millions)

Electric Utilities and Infrastructure
Gas Utilities and Infrastructure
Commercial Renewables
Other

Total

Years Ended December 31,

2020

2019

2018

Investments

Equity in earnings

Investments

Equity in earnings

Investments

Equity in earnings

$ 105 
215 
534 
107 

$ 961

$

(1)
(2,017)
—
13

$

122 
1,388 
314 
112 

$ (2,005)

$

1,936 

$

9
114 
(4)
43 

$ 162

$

97 
1,003 
201 
108 

$ 1,409 

$

6
27
(1)
51

$

83

During the years ended December 31, 2020, 2019 and 2018, Duke Energy 

received distributions from equity investments of $37 million, $55 million and 
$108 million, respectively, which are included in Other assets within Cash Flows 
from Operating Activities on the Consolidated Statements of Cash Flows. During 
the years ended December 31, 2020, 2019 and 2018, Duke Energy received 
distributions from equity investments of $133 million, $11 million and $137 million, 
respectively, which are included in Return of investment capital within Cash Flows 
from Investing Activities on the Consolidated Statements of Cash Flows.

During the years ended December 31, 2020, 2019 and 2018, Piedmont 

received distributions from equity investments of $2 million, $1 million and 
$1 million, respectively, which are included in Other assets within Cash Flows 

from Operating Activities and $2 million, $4 million and $3 million, respectively, 
which are included within Cash Flows from Investing Activities on the 
Consolidated Statements of Cash Flows.

Significant investments in affiliates accounted for under the equity method 

are discussed below.

Electric Utilities and Infrastructure

Duke Energy owns 50% interests in both DATC and Pioneer, which build, 

own and operate electric transmission facilities in North America.

164

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Gas Utilities and Infrastructure

The table below outlines Duke Energy’s ownership interests in natural gas 

pipeline companies and natural gas storage facilities. 

across the U.S. Duke Energy is not the primary beneficiary of the distributed fuel 
cell portfolio and does not consolidate these assets. 

Other

Entity Name

Pipeline Investments(a)

ACP(b)
Sabal Trail
Cardinal(c)
Storage Facilities
Pine Needle(c)
Hardy Storage(c)

Other
Total Investments(d)

Investment Amount (in millions)

Ownership
Interest

December 31,

2020

2019

Duke Energy has a 17.5% indirect economic ownership interest and 
25% board representation and voting rights interest in NMC, which owns and 
operates a methanol and MTBE business in Jubail, Saudi Arabia. 

47 %
7.5 %
21.49 %

45 %
50 %
29.68 %

$

$

— 
120 
9 

27 
56 
3
215

$

$

1,179 
121
9

28
51
—
1,388 

Significant Subsidiaries

For the year ended December 31, 2020, Duke Energy’s investment in 
ACP met the requirements of S-X Rule 4-08(g) to provide summarized financial 
information. The following table provides summary information for ACP as 
required under S-X Rule 1-02(bb) for the comparative periods in Duke Energy’s 
consolidated balance sheets and consolidated statements of operations.

December 31,

$

2020

43  $
93 
1,965 
167 
(1,996)

2019
17
4,091 
37 
1,760
2,311

Years Ended December 31,

2020

2019

2018

$ —  $ —  $ — 
(6)
138 
65 

$ (2,121) $ 116 $

(4,612)
(4,512)

(5)
246 

(a)  Duke Energy recorded OTTIs of $25 million and $55 million within Equity in (losses) earnings of 

unconsolidated affiliates on Duke Energy’s Consolidated Statements of Operations for the years ended 
December 31, 2019, and 2018, respectively, to completely impair its 24% ownership interest in 
Constitution.

(b) 

In 2020, Duke Energy determined it would no longer continue its investment in the construction of the 
ACP pipeline. See Notes 3 and 7 for further information. 

(c)  Piedmont owns the Cardinal, Pine Needle and Hardy Storage investments.

(d)  Duke Energy includes purchase accounting adjustments related to Piedmont.

(in millions)
Current assets
Noncurrent assets
Current liabilities
Noncurrent liabilities
Membership interests

Commercial Renewables

DS Cornerstone, LLC, which owns wind farm projects in the U.S. was part 

of a sale of minority interest in a certain portion of renewable assets in 2019. 
See Note 1 for more information on the sale. Prior to the sale, Duke Energy had 
a 50% interest in DS Cornerstone, LLC. After the sale, Duke Energy has a 26% 
interest in the investment.

As of December 31, 2020, Duke Energy completed its acquisition 

of 70 distributed fuel cell projects from Bloom Energy Corporation, which 
approximates 43 MW of capacity serving commercial and industrial customers 

Net revenues
Operating loss
Net (loss) income
Net (loss) income attributable to Duke Energy

165

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)13.  RELATED PARTY TRANSACTIONS

The Subsidiary Registrants engage in related party transactions in 
accordance with the applicable state and federal commission regulations. Refer 
to the Consolidated Balance Sheets of the Subsidiary Registrants for balances 
due to or due from related parties. Material amounts related to transactions 
with related parties included in the Consolidated Statements of Operations and 
Comprehensive Income are presented in the following table.

(in millions)

Duke Energy Carolinas
Corporate governance and shared service expenses(a)
Indemnification coverages(b)
Joint Dispatch Agreement (JDA) revenue(c)
JDA expense(c)
Intercompany natural gas purchases(d)

Progress Energy
Corporate governance and shared service expenses(a)
Indemnification coverages(b)
JDA revenue(c)
JDA expense(c)
Intercompany natural gas purchases(d)

Duke Energy Progress
Corporate governance and shared service expenses(a)
Indemnification coverages(b)
JDA revenue(c)
JDA expense(c)
Intercompany natural gas purchases(d)

Duke Energy Florida
Corporate governance and shared service expenses(a)
Indemnification coverages(b)

Duke Energy Ohio
Corporate governance and shared service expenses(a)
Indemnification coverages(b)

Duke Energy Indiana
Corporate governance and shared service expenses(a)
Indemnification coverages(b)

Intercompany Income Taxes

Years Ended December 31,

2020

2019

2018

$ 753 $ 841 $ 985
22 
84 
207 
15 

20 
25 
114 
15 

20 
60 
186 
15 

$ 715 $ 778 $ 906
34 
207 
84 
78 

36 
114 
25 
75 

37 
186 
60 
76 

$ 420 $ 462 $ 577
13 
207 
84 
78 

17 
114 
25 
75 

15 
186 
60 
76 

$ 295 $ 316 $ 329
21

19

22

$ 326 $ 354 $ 374
5

4

4

$ 401 $ 412 $ 405
7

8

7

(in millions)

Piedmont
Corporate governance and shared service expenses(a)
Indemnification coverages(b)
Intercompany natural gas sales(d)
Natural gas storage and transportation costs(e)

Years Ended December 31,

2020

2019

2018

$ 140 $ 138 $ 170
2
93
25

3
90
23

3
91
23

(a)  The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared 
services costs, primarily related to human resources, employee benefits, information technology, legal and 
accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, 
maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(b)  The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, 
Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, 
maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(c)  Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch 
of power plants between the service territories to reduce customer rates. Revenues from the sale of power 
and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and 
Fuel used in electric generation and purchased power, respectively, on the Consolidated Statements of 
Operations and Comprehensive Income.

(d)  Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke 

Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating Revenues, 
and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of 
Fuel used in electric generation and purchased power on their respective Consolidated Statements of 
Operations and Comprehensive Income. These intercompany revenues and expenses are eliminated in 
consolidation.

(e)  Piedmont has related party transactions as a customer of its equity method investments in Pine Needle, 

Hardy Storage, and Cardinal natural gas storage and transportation facilities. These expenses are included 
in Cost of natural gas on Piedmont’s Consolidated Statements of Operations and Comprehensive Income. 

In addition to the amounts presented above, the Subsidiary Registrants 
have other affiliate transactions, including rental of office space, participation 
in a money pool arrangement, other operational transactions and their 
proportionate share of certain charged expenses. See Note 6 for more 
information regarding money pool. These transactions of the Subsidiary 
Registrants are incurred in the ordinary course of business and are eliminated 
in consolidation.

As discussed in Note 17, certain trade receivables have been sold by 
Duke Energy Ohio and Duke Energy Indiana to CRC, an affiliate formed by a 
subsidiary of Duke Energy. The proceeds obtained from the sales of receivables 
are largely cash but do include a subordinated note from CRC for a portion of the 
purchase price.

Duke Energy and the Subsidiary Registrants file a consolidated federal income tax return and other state and jurisdictional returns. The Subsidiary Registrants have a 
tax sharing agreement with Duke Energy for the allocation of consolidated tax liabilities and benefits. Income taxes recorded represent amounts the Subsidiary Registrants 
would incur as separate C-Corporations. The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.

(in millions)

December 31, 2020
Intercompany income tax receivable
Intercompany income tax payable

December 31, 2019
Intercompany income tax receivable
Intercompany income tax payable

Duke 
Energy
Carolinas

Progress
Energy

Duke 
Energy
Progress

Duke 
Energy
Florida

Duke 
Energy
Ohio

Duke 
Energy
Indiana

Piedmont

$ —
31

$ —
5

$ —
33

$ 125
—

$ —
46

$ —
35

$ —
2

$ 28
—

$ —
2

$

9
—

$

9
—

$ 28
—

$ 10
—

$ 13
—

166

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)14.  DERIVATIVES AND HEDGING

The Duke Energy Registrants use commodity and interest rate contracts 

to manage commodity price risk and interest rate risk. The primary use of 
commodity derivatives is to hedge the generation portfolio against changes in 
the prices of electricity and natural gas. Piedmont enters into natural gas supply 
contracts to provide diversification, reliability and natural gas cost benefits to 
its customers. Interest rate derivatives are used to manage interest rate risk 
associated with borrowings.

All derivative instruments not identified as NPNS are recorded at fair 

value as assets or liabilities on the Consolidated Balance Sheets. Cash 
collateral related to derivative instruments executed under master netting 
arrangements is offset against the collateralized derivatives on the Consolidated 
Balance Sheets. The cash impacts of settled derivatives are recorded as 
operating activities on the Consolidated Statements of Cash Flows.

Cash Flow Hedges

For a derivative designated as hedging the exposure to variable cash 
flows of a future transaction, referred to as a cash flow hedge, the effective 
portion of the derivative’s gain or loss is initially reported as a component of 
other comprehensive income and subsequently reclassified into earnings once 
the future transaction impacts earnings. Amounts for interest rate contracts are 
reclassified to earnings as interest expense over the term of the related debt. 
Gains and losses reclassified out of AOCI for the years ended December 31, 
2020, 2019 and 2018, were not material. Duke Energy’s interest rate derivatives 
designated as hedges include interest rate swaps used to hedge existing debt 
within the Commercial Renewables segment and forward-starting interest rate 
swaps not accounted for under regulatory accounting.

INTEREST RATE RISK

Undesignated Contracts

The Duke Energy Registrants are exposed to changes in interest rates as 

a result of their issuance or anticipated issuance of variable-rate and fixed-rate 
debt and commercial paper. Interest rate risk is managed by limiting variable-
rate exposures to a percentage of total debt and by monitoring changes in 
interest rates. To manage risk associated with changes in interest rates, the 
Duke Energy Registrants may enter into interest rate swaps, U.S. Treasury lock 
agreements and other financial contracts. In anticipation of certain fixed-rate 
debt issuances, a series of forward-starting interest rate swaps or Treasury 
locks may be executed to lock in components of current market interest rates. 
These instruments are later terminated prior to or upon the issuance of the 
corresponding debt. 

Undesignated contracts primarily include contracts not designated as a 

hedge because they are accounted for under regulatory accounting or contracts 
that do not qualify for hedge accounting. 

Duke Energy’s interest rate swaps for its regulated operations employ 
regulatory accounting. With regulatory accounting, the mark-to-market gains or 
losses on the swaps are deferred as regulatory liabilities or regulatory assets, 
respectively. Regulatory assets and liabilities are amortized consistent with the 
treatment of the related costs in the ratemaking process. The accrual of interest 
on the swaps is recorded as Interest Expense on the Duke Energy Registrant’s 
Consolidated Statements of Operations and Comprehensive Income. 

The following tables show notional amounts of outstanding derivatives related to interest rate risk.

(in millions)

Cash flow hedges
Undesignated contracts

Total notional amount(a)

(in millions)

Cash flow hedges
Undesignated contracts

Total notional amount(a)

Duke
Energy

632
1,177

1,809 

Duke
Energy

993
1,277 

2,270 

$

$

$

$

Duke Energy
Carolinas

$

$

—
400

400

Duke Energy
Carolinas

$

$

—
450

450

December 31, 2020

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

—
750

750

$

$

—
750

750

$

$

—
—

—

$ —
27

$

27

December 31, 2019

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

—
800 

800 

$

$

—
250

250

$

$

—
550

550

$ —
27

$

27

$

$

$

$

(a)  Duke Energy includes amounts related to consolidated VIEs of $632 million in cash flow hedges as of December 31, 2020, and $693 million in cash flow hedges as of December 31, 2019. 

COMMODITY PRICE RISK

The Duke Energy Registrants are exposed to the impact of changes in 

the prices of electricity purchased and sold in bulk power markets and natural 
gas purchases, including Piedmont’s natural gas supply contracts. Exposure 
to commodity price risk is influenced by a number of factors including the term 
of contracts, the liquidity of markets and delivery locations. To manage risk 

167

associated with commodity prices, the Duke Energy Registrants may enter into 
long-term power purchase or sales contracts and long-term natural gas supply 
agreements.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
Cash Flow Hedges

For derivatives designated as hedging the exposure to variable cash flows 

of a future transaction, referred to as a cash flow hedge, the derivative’s gain 
or loss is initially reported as a component of other comprehensive income and 
subsequently reclassified into earnings once the future transaction impacts 
earnings. Gains and losses reclassified out of accumulated other comprehensive 
income (loss) for the year ended December 31, 2020, 2019 and 2018, were not 
material. Duke Energy’s commodity derivatives designated as hedges include 
long-term electricity sales in the Commercial Renewables segment.

Undesignated Contracts

For the Subsidiary Registrants, bulk power electricity and natural gas 

purchases flow through fuel adjustment clauses, formula-based contracts or 
other cost sharing mechanisms. Differences between the costs included in rates 

and the incurred costs, including undesignated derivative contracts, are largely 
deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for 
the use of financial instruments to hedge commodity price risks. The strategy 
and objective of these hedging programs are to use the financial instruments to 
reduce gas cost volatility for customers.

Volumes

The tables below include volumes of outstanding commodity derivatives. 

Amounts disclosed represent the absolute value of notional volumes of 
commodity contracts excluding NPNS. The Duke Energy Registrants have netted 
contractual amounts where offsetting purchase and sale contracts exist with 
identical delivery locations and times of delivery. Where all commodity positions 
are perfectly offset, no quantities are shown.

Electricity (GWh)(a)
Natural gas (millions of Dth)

Electricity (GWh)
Natural gas (millions of Dth)

(a)  Duke Energy includes 22,048 GWh that relates to cash flow hedges.

December 31, 2020

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Ohio

Duke Energy
Indiana

—
145 

— 
158 

— 
158 

2,559 
— 

10,802 
2 

December 31, 2019

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Ohio

Duke Energy
Indiana

— 
130 

— 
160 

— 
160 

1,887 
— 

13,971 
3 

Duke
Energy

35,409 
678 

Duke
Energy

15,858 
704 

Piedmont

— 
373 

Piedmont

— 
411 

LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED IN THE CONSOLIDATED BALANCE SHEETS

The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are 
netted on the Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the 
fair values shown.

Derivative Assets

(in millions)

Commodity Contracts

Not Designated as Hedging Instruments
Current
Noncurrent

Total Derivative Assets – Commodity Contracts

Interest Rate Contracts

Not Designated as Hedging Instruments
Current

Total Derivative Assets – Interest Rate Contracts
Total Derivative Assets

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

December 31, 2020

$ 30
13

$ 43

$ 18

$ 18
$ 61

$

$

14
6

20

$ —

$ —
20
$

$

9
6

$ 15

$ 18

$ 18
$ 33

$

9
6

$ 15

$ 18

$ 18
$ 33

$ —
—

$ —

$ —

$ —
$ —

$

$

1
—

1

$ —

$ —
1
$

$

$

6
—

6

$ —

$ —
6
$

$

$

1
—

1

$ —

$ —
1
$

168

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Derivative Liabilities

(in millions)
Commodity Contracts
Designated as Hedging Instruments
Current
Noncurrent
Not Designated as Hedging Instruments
Current
Noncurrent
Total Derivative Liabilities – Commodity Contracts
Interest Rate Contracts
Designated as Hedging Instruments
Current
Noncurrent
Not Designated as Hedging Instruments
Current
Noncurrent
Total Derivative Liabilities – Interest Rate Contracts
Total Derivative Liabilities

Derivative Assets

(in millions)
Commodity Contracts
Not Designated as Hedging Instruments
Current
Noncurrent
Total Derivative Assets – Commodity Contracts
Interest Rate Contracts
Not Designated as Hedging Instruments
Current
Total Derivative Assets – Interest Rate Contracts
Equity Securities Contracts
Not Designated as Hedging Instruments
Current
Total Derivative Assets – Equity Securities Contracts
Total Derivative Assets

Duke 
Energy

Duke Energy 
Carolinas

Progress 
Energy

December 31, 2020
Duke Energy
Florida

Duke Energy 
Progress

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

$ 14
70 

$ 30
137
$ 251

$ 15
48

5
5
$ 73
$ 324

$ —
—

$

$

13
3
16

$ —
—

4
—
4
20

$
$

$ —
—

$

2
27
$ 29

$ —
—

—
—
$ —
$ 29

$ —
—

$

2
12
$ 14

$ —
—

—
—
$ —
$ 14

$ —
—

$ —
—
$ —

$ —
—

—
—
$ —
$ —

$ —
—

$ —
—
$ —

$ —
—

1
5
6
6

$
$

$ —
—

$

$

1
—
1

$ —
—

—
—
$ —
1
$

$ —
—

$ 15
107
$ 122

$ —
—

—
—
$ —
$ 122

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

December 31, 2019
Duke Energy
Florida

Duke Energy
Progress

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

$ 17
1
$ 18

6
6

$

$
1
1
$
$ 25

$ —
—
$ —

—
$ —

$ —
$ —
$ —

$ —
—
$ —

6
6

1
1
7

$

$
$
$

$ —
—
$ —

—
$ —

$ —
$ —
$ —

$ —
—
$ —

6
6

1
1
7

$

$
$
$

$

$

3
1
4

—
$ —

$ —
$ —
4
$

$

$

13
—
13

—
$ —

$ —
$ —
13
$

$

$

1
—
1

—
$ —

$ —
$ —
1
$

169

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Derivative Liabilities

December 31, 2019

(in millions)
Commodity Contracts
Not Designated as Hedging Instruments
Current
Noncurrent
Total Derivative Liabilities – Commodity Contracts
Interest Rate Contracts
Designated as Hedging Instruments
Current
Noncurrent
Not Designated as Hedging Instruments
Current
Noncurrent
Total Derivative Liabilities – Interest Rate Contracts
Equity Securities Contracts
Not Designated as Hedging Instruments

Current
Total Derivative Liabilities – Equity Securities Contracts
Total Derivative Liabilities

OFFSETTING ASSETS AND LIABILITIES

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

$

67
156
$ 223

$

$

19
21

8
5
53

24
$
$
24
$ 300

$

$

33
10
43

$ —
—

6
—
6

$

$ —
$ —
49
$

$

$

26
37
63

$ —
—

1
—
1

24
24
88

$

$
$
$

$

$

26
22
48

$ —
—

1
—
1

$

$ —
$ —
49
$

$ —
—
$ —

$ —
—

—
—
$ —

$
$
$

24
24
24

$ —
—
$ —

$ —
—

1
5
6

$

$ —
$ —
6
$

$

$

1
—
1

$ —
—

—
—
$ —

$ —
$ —
1
$

$

7
110
$ 117

$ —
—

—
—
$ —

$ —
$ —
$ 117

The following tables present the line items on the Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy’s outstanding 

derivative contracts are subject to enforceable master netting arrangements. The gross amounts offset in the tables below show the effect of these netting 
arrangements on financial position and include collateral posted to offset the net position. The amounts shown are calculated by counterparty. Accounts receivable or 
accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.

Derivative Assets

(in millions)

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

December 31, 2020

Current
Gross amounts recognized
Gross amounts offset
Net amounts presented in Current Assets: Other

Noncurrent
Gross amounts recognized
Gross amounts offset

Net amounts presented in Other Noncurrent Assets: Other

$ 48
(3)
$ 45

$ 13
(5)

$

8

$ 14
(2)
$ 12

$

$

6
(1)

5

$ 27
(2)
$ 25

$

$

6
(4)

2

$ 27
(2)
$ 25

$

$

6
(4)

2

$ —
—
$ —

$ —
—

$ —

$

$

1
—
1

$ —
—

$ —

$

$

6
—
6

$ —
—

$ —

$

$

1
—
1

$ —
—

$ —

Derivative Liabilities

(in millions)

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

December 31, 2020

Current
Gross amounts recognized
Gross amounts offset
Net amounts presented in Current Liabilities: Other

Noncurrent
Gross amounts recognized
Gross amounts offset

$ 64
(3)
$ 61

$ 260
(5)

Net amounts presented in Other Noncurrent Liabilities: Other

$ 255

$ 17
(2)
$ 15

$

$

3
(1)

2

$

2
(2)
$ —

$ 27
(4)

$ 23

$

2
(2)
$ —

$ 12
(4)

$

8

$ —
—
$ —

$ —
—

$ —

$

$

$

$

1
—
1

5
—

5

$

$

1
—
1

$ —
—

$ —

$ 15
—
$ 15

$ 107
—

$ 107

170

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Derivative Assets

(in millions)

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

December 31, 2019

Current
Gross amounts recognized
Gross amounts offset
Net amounts presented in Current Assets: Other

Noncurrent
Gross amounts recognized
Gross amounts offset

Net amounts presented in Other Noncurrent Assets: Other

$

$

$

$

24
(1)
23

1
—

1

$ —
—
$ —

$ —
—

$ —

$

$

7
(1)
6

$ —
—

$ —

$ —
—
$ —

$ —
—

$ —

$

$

7
(1)
6

$ —
—

$ —

$

$

$

$

3
—
3

1
—

1

$

$

13
—
13

$ —
—

$ —

$

$

1
—
1

$ —
—

$ —

Derivative Liabilities

(in millions)

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

Duke Energy
Florida

Duke Energy
Ohio

Duke Energy
Indiana

Piedmont

December 31, 2019

Current
Gross amounts recognized
Gross amounts offset
Net amounts presented in Current Liabilities: Other

Noncurrent
Gross amounts recognized
Gross amounts offset

$ 118
(24)
94

$

$ 182
—

Net amounts presented in Other Noncurrent Liabilities: Other

$ 182

OBJECTIVE CREDIT CONTINGENT FEATURES

$

$

$

$

39
—
39

10
—

10

$

$

$

$

51
(24)
27

37
—

37

$

$

$

$

27
—
27

22
—

22

$

24
(24)
$ —

$ —
—

$ —

$

$

$

$

1
—
1

5
—

5

$

$

1
—
1

$ —
—

$ —

$

$

7
—
7

$ 110
—

$ 110

Certain derivative contracts contain objective credit contingent features. These features include the requirement to post cash collateral or letters of credit if 
specific events occur, such as a credit rating downgrade below investment grade. The following tables show information with respect to derivative contracts that are 
in a net liability position and contain objective credit-risk-related payment provisions.

(in millions)

Aggregate fair value of derivatives in a net liability position

Fair value of collateral already posted

Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered

(in millions)

Aggregate fair value of derivatives in a net liability position

Fair value of collateral already posted

Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered

December 31, 2020

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

$

$

24

— 

24 

$

9

— 

9 

$

14

—

14

14

—

14

December 31, 2019

Duke
Energy

Duke Energy
Carolinas

Progress
Energy

Duke Energy
Progress

$

$

79

—

79

$

35

—

35

$

44

—

44

44

—

44

The Duke Energy Registrants have elected to offset cash collateral and fair values of derivatives. For amounts to be netted, the derivative and cash collateral 

must be executed with the same counterparty under the same master netting arrangement.

171

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)15. 

INVESTMENTS IN DEBT AND EQUITY SECURITIES

Duke Energy’s investments in debt and equity securities are primarily comprised of investments held in (i) the NDTF at Duke Energy Carolinas, Duke Energy 
Progress and Duke Energy Florida, (ii) the grantor trusts at Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana related to OPEB plans and (iii) Bison. 
The Duke Energy Registrants classify investments in debt securities as AFS and investments in equity securities as FV-NI.

For investments in debt securities classified as AFS, the unrealized gains and losses are included in other comprehensive income until realized, at which time 
they are reported through net income. For investments in equity securities classified as FV-NI, both realized and unrealized gains and losses are reported through net 
income. Substantially all of Duke Energy’s investments in debt and equity securities qualify for regulatory accounting, and accordingly, all associated realized and 
unrealized gains and losses on these investments are deferred as a regulatory asset or liability.

Duke Energy classifies the majority of investments in debt and equity securities as long term, unless otherwise noted.

Investment Trusts

Other AFS Securities

The investments within the Investment Trusts are managed by 
independent investment managers with discretion to buy, sell and invest 
pursuant to the objectives set forth by the investment manager agreements 
and trust agreements. The Duke Energy Registrants have limited oversight of 
the day-to-day management of these investments. As a result, the ability to 
hold investments in unrealized loss positions is outside the control of the Duke 
Energy Registrants. Accordingly, all unrealized losses associated with debt 
securities within the Investment Trusts are recognized immediately and deferred 
to regulatory accounts where appropriate.

Unrealized gains and losses on all other AFS securities are included in 

other comprehensive income until realized, unless it is determined the carrying 
value of an investment has a credit loss. The Duke Energy Registrants analyze all 
investment holdings each reporting period to determine whether a decline in fair 
value is related to a credit loss. If a credit loss exists, the unrealized credit loss 
is included in earnings. There were no material credit losses as of December 31, 
2020, and 2019. 

Other Investments amounts are recorded in Other within Other Noncurrent 

Assets on the Consolidated Balance Sheets.

DUKE ENERGY

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt 

investments are classified as AFS.

(in millions)

NDTF
Cash and cash equivalents 
Equity securities 
Corporate debt securities 
Municipal bonds 
U.S. government bonds 
Other debt securities 

Total NDTF Investments

Other Investments 
Cash and cash equivalents 
Equity securities 
Corporate debt securities 
Municipal bonds 
U.S. government bonds 
Other debt securities 

Total Other Investments

Total Investments 

December 31, 2020

December 31, 2019

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated 
Fair Value

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

$

177 
6,235 
806 
370 
1,361 
180 

$ 9,129 

$

$

127
146 
110 
86 
42 
47 

558

$ 9,687 

$ —
3,523 
37 
13 
33 
3 

$ 3,609 

$ — 
57 
3 
4 
2 
—

$

66

$ 3,675 

$ —
55 
1 
— 
1 
— 

$ 57 

$ —
— 
— 
— 
— 
— 

$ —

$ 57

$

101
5,661 
603 
368 
1,256 
141 

$ 8,130

$

$

52 
122 
67 
94 
41 
56 

432

$ 8,562 

$ —
4,138 
76 
22 
51 
8 

$

4,295 

$ —
79 
8 
5 
— 
— 

$

$

92

4,387

$ —
54 
1 
— 
— 
— 

$

55

$ —
—
—
—
—
—

$ —

$

55

172

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The table below summarizes the maturity date for debt securities.

(in millions)

Due in one year or less
Due after one through five years
Due after five through 10 years
Due after 10 years

Total

December 31, 2020

$

149 
922 
671 
1,260 

$ 3,002 

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 

2020, 2019 and 2018, were as follows.

(in millions)
FV-NI:
Realized gains
Realized losses
AFS:

Realized gains
Realized losses

DUKE ENERGY CAROLINAS

Years Ended December 31,

2020

2019

2018

$

366
174

96
51

$

172
151

94
67

$ 168
126

22
51

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt 

investments are classified as AFS.

(in millions)

NDTF
Cash and cash equivalents
Equity securities
Corporate debt securities
Municipal bonds
U.S. government bonds
Other debt securities

Total NDTF Investments

December 31, 2020

December 31, 2019

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated 
Fair Value

$

$

—
2,442 
49 
6 
25 
7 

2,529 

$

$

—
23 
1
—
—
—

24

$

$

30 
3,685 
510 
91 
475 
174 

4,965 

$

$

—
1,914 
21 
3 
16 
3 

1,957 

$

$

— $

8 
1 
— 
1 
— 

10

$

21
3,154 
361 
96 
578 
137 

4,347 

The table below summarizes the maturity date for debt securities.

(in millions)

Due in one year or less
Due after one through five years
Due after five through 10 years
Due after 10 years

Total

December 31, 2020

$

14
299 
279 
658 

$ 1,250 

173

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 

2020, 2019 and 2018, were as follows.

(in millions)
FV-NI:
Realized gains
Realized losses
AFS:

Realized gains
Realized losses

PROGRESS ENERGY

Years Ended December 31,

2020

2019

2018

$

64
99

60
37

$

113
107

55
38

$

89
73

19
35

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt 

investments are classified as AFS.

December 31, 2020

December 31, 2019

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

(in millions)

NDTF
Cash and cash equivalents 
Equity securities 
Corporate debt securities 
Municipal bonds 
U.S. government bonds 
Other debt securities 

Total NDTF Investments

Other Investments 
Cash and cash equivalents 
Municipal bonds 

Total Other Investments

Total Investments 

$

$

$

$

$

—
1,696 
27 
16 
26 
1 

1,766 

—
3

3

1,769 

$ —
31
—
—
—
—

$

31

$ —
—

$ —

$

31

$

$

$

$

$

147
2,550 
296 
279 
886 
6 

4,164 

106
26

132

4,296 

$

$

$

$

$

—
1,609 
16 
10 
17 
— 

1,652 

—
3 

3

1,655 

$ —
47
—
—
—
—

$

47

$ —
—

$ —

$

47

$

$

$

$

$

80
2,507 
242 
272 
678 
4 

3,783 

49
51

100

3,883 

December 31, 2020

$

109
567 
298 
519 

$ 1,493 

The table below summarizes the maturity date for debt securities.

(in millions)

Due in one year or less
Due after one through five years
Due after five through 10 years
Due after 10 years

Total

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 

2020, 2019 and 2018, were as follows.

(in millions)
FV-NI:
Realized gains
Realized losses
AFS:

Realized gains
Realized losses

Years Ended December 31,

2020

2019

2018

$

302
75

24
13

$

59
44

36
29

$

79
53

3
15

174

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)— $
21
—
—
—
—

21

$

— $

— $

21

$

53
2,077 
242 
272 
403 
4 

3,051 

2

2

3,053 

December 31, 2020

$

21
259
210
503

$ 993

DUKE ENERGY PROGRESS

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt 

investments are classified as AFS.

December 31, 2020

December 31, 2019

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated 
Fair Value

(in millions)

NDTF
Cash and cash equivalents 
Equity securities 
Corporate debt securities 
Municipal bonds 
U.S. government bonds 
Other debt securities 

Total NDTF Investments

Other Investments 
Cash and cash equivalents 

Total Other Investments

Total Investments 

$

$

$

$

$

—
1,617 
27 
16 
26 
1 

1,687

—

—

1,687 

$

$

$

$

$

—
31
—
—
—
—

31

—

—

31

$

$

$

$

$

76 
2,459 
296 
279 
412 
6 

3,528 

1

1

3,529 

$

$

$

$

$

—
1,258 
16 
10 
16 
— 

1,300 

—

—

1,300 

$

$

$

$

$

The table below summarizes the maturity date for debt securities.

(in millions)

Due in one year or less
Due after one through five years
Due after five through 10 years
Due after 10 years

Total

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2020, 

2019 and 2018, were as follows.

(in millions)
FV-NI:
Realized gains
Realized losses
AFS:

Realized gains
Realized losses

Years Ended December 31,

2020

2019

2018

$

52
59

24
13

$

38
33

7
5

$

68
48

2
10

175

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)DUKE ENERGY FLORIDA

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt 

investments are classified as AFS.

(in millions)

NDTF
Cash and cash equivalents
Equity securities
U.S. government bonds

Total NDTF Investments(a)

Other Investments
Cash and cash equivalents
Municipal bonds

Total Other Investments

Total Investments

December 31, 2020

December 31, 2019

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

$

$

$

$

$

—
79
—

79

—
3

3

82

$ —
—
—

$ —

$ —
—

$ —

$ —

$

$

$

$

$

71
91
474

636

1
26

27

663

$

$

$

$

$

—
351
1

352

—
3

3

355

$ —
26
—

$

26

$ —
—

$ —

$

26

$

$

$

$

$

27
430
275

732

4
51

55

787

(a)  During the years ended December 31, 2020, and 2019, Duke Energy Florida continued to receive reimbursements from the NDTF for costs related to ongoing decommissioning activity of the Crystal River Unit 3.

The table below summarizes the maturity date for debt securities.

(in millions)

Due in one year or less
Due after one through five years
Due after five through 10 years
Due after 10 years

Total

December 31, 2020

$

88
308
88
16

$ 500

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2020, 

2019 and 2018, were as follows.

(in millions)
FV-NI:
Realized gains
Realized losses
AFS:

Realized gains
Realized losses

Years Ended December 31,

2020

2019

2018

$

250
16

—
—

$

21
11

29
24

$

11
5

1
5

176

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)DUKE ENERGY INDIANA 

The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt 

investments are classified as AFS.

(in millions)

Investments 
Cash and cash equivalents
Equity securities 
Corporate debt securities 
Municipal bonds 
U.S. government bonds 

Total Investments

December 31, 2020

December 31, 2019

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

Gross Unrealized
Holding Gains

Gross Unrealized
Holding Losses

Estimated
Fair Value

$

$

—
58
—
1
—

59

$ —
—
—
—
—

$ —

$

$

1
97
3
38
4

143

$

$

—
43
—
1
—

44

$ —
—
—
—
—

$ — 

$

$

—
81
6
36
2

125

The table below summarizes the maturity date for debt securities.

(in millions)

Due in one year or less
Due after one through five years
Due after five through 10 years
Due after 10 years

Total

December 31, 2020

$

$

3
17
10
15

45

Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 

2020, 2019 and 2018, were immaterial.

16. FAIR VALUE MEASUREMENTS

Investments in equity securities

Fair value is the exchange price to sell an asset or transfer a liability in 
an orderly transaction between market participants at the measurement date. 
The fair value definition focuses on an exit price versus the acquisition cost. 
Fair value measurements use market data or assumptions market participants 
would use in pricing the asset or liability, including assumptions about risk and 
the risks inherent in the inputs to the valuation technique. These inputs may 
be readily observable, corroborated by market data, or generally unobservable. 
Valuation techniques maximize the use of observable inputs and minimize use 
of unobservable inputs. A midmarket pricing convention (the midpoint price 
between bid and ask prices) is permitted for use as a practical expedient.

Fair value measurements are classified in three levels based on the fair 

value hierarchy as defined by GAAP. Certain investments are not categorized 
within the fair value hierarchy. These investments are measured at fair value 
using the net asset value per share practical expedient. The net asset value 
is derived based on the investment cost, less any impairment, plus or minus 
changes resulting from observable price changes for an identical or similar 
investment of the same issuer.

Fair value accounting guidance permits entities to elect to measure 
certain financial instruments that are not required to be accounted for at fair 
value, such as equity method investments or the company’s own debt, at fair 
value. The Duke Energy Registrants have not elected to record any of these 
items at fair value.

Valuation methods of the primary fair value measurements disclosed 

below are as follows.

The majority of investments in equity securities are valued using Level 1 

measurements. Investments in equity securities are typically valued at the 
closing price in the principal active market as of the last business day of the 
quarter. Principal active markets for equity prices include published exchanges 
such as the NYSE and Nasdaq Stock Market. Foreign equity prices are translated 
from their trading currency using the currency exchange rate in effect at the 
close of the principal active market. There was no after-hours market activity 
that was required to be reflected in the reported fair value measurements.

Investments in debt securities

Most investments in debt securities are valued using Level 2 
measurements because the valuations use interest rate curves and credit 
spreads applied to the terms of the debt instrument (maturity and coupon 
interest rate) and consider the counterparty credit rating. If the market for a 
particular fixed-income security is relatively inactive or illiquid, the measurement 
is Level 3.

Commodity derivatives

Commodity derivatives with clearinghouses are classified as Level 1. 
Commodity derivatives with observable forward curves are classified as Level 2. 
If forward price curves are not observable for the full term of the contract and 
the unobservable period had more than an insignificant impact on the valuation, 

177

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)the commodity derivative is classified as Level 3. In isolation, increases 
(decreases) in natural gas forward prices result in favorable (unfavorable) 
fair value adjustments for natural gas purchase contracts; and increases 
(decreases) in electricity forward prices result in unfavorable (favorable) 
fair value adjustments for electricity sales contracts. Duke Energy regularly 
evaluates and validates pricing inputs used to estimate the fair value of natural 
gas commodity contracts by a market participant price verification procedure. 
This procedure provides a comparison of internal forward commodity curves to 
market participant generated curves.

Interest rate derivatives

Most over-the-counter interest rate contract derivatives are valued using 

financial models that utilize observable inputs for similar instruments and 
are classified as Level 2. Inputs include forward interest rate curves, notional 
amounts, interest rates and credit quality of the counterparties.

Other fair value considerations

See Note 11 for a discussion of the valuation of goodwill and intangible 

assets.

DUKE ENERGY

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. 
Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 14. See Note 15 for additional information 
related to investments by major security type for the Duke Energy Registrants.

(in millions)

NDTF cash and cash equivalents
NDTF equity securities
NDTF debt securities
Other equity securities
Other debt securities
Other cash and cash equivalents
Derivative assets

Total assets

Derivative liabilities

Net assets (liabilities)

(in millions)

NDTF cash and cash equivalents
NDTF equity securities
NDTF debt securities
Other equity securities
Other debt securities
Other cash and cash equivalents
Derivative assets

Total assets

NDTF equity security contracts
Derivative liabilities

Net assets (liabilities)

December 31, 2020

Total Fair Value

Level 1

Level 2

Level 3

Not Categorized

$

177 
6,235 
2,717 
146 
285 
127 
61 

9,748 
(324)

$

177 
6,189 
874 
146 
37 
127 
1 

7,551 
— 

$ — 
— 
1,843 
— 
248 
— 
53 

2,144 
(240)

$ — 
— 
— 
— 
— 
— 
7 

7 
(84)

$ 9,424 

$ 7,551 

$ 1,904 

$ (77)

$ — 
46 
— 
— 
— 
— 
— 

46 
— 

$ 46 

December 31, 2019

Total Fair Value

Level 1

Level 2

Level 3 

Not Categorized

$

101 
5,684 
2,368 
122 
258 
52 
25 

8,610 

(23)
(277)

$

101 
5,633 
725 
122 
39 
52 
3 

6,675 

— 
(15)

$ — 
— 
1,643 
— 
219 
— 
7 

1,869 

(23)
(145)

$ — 
— 
— 
— 
— 
— 
15 

15 

— 
(117)

$ — 
51 
— 
— 
— 
— 
— 

51 

— 
— 

$ 8,310 

$ 6,660 

$ 1,701 

$ (102)

$

51 

178

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

(in millions)

Balance at beginning of period
Total pretax realized or unrealized losses included in comprehensive income
Purchases, sales, issuances and settlements:

Purchases

Settlements

Net transfers Out of Level 3(a)

Total (losses) gains included on the Consolidated Balance Sheet

Balance at end of period

(a)  Transferred from Level 3 to Level 2 because observable market data became available.

DUKE ENERGY CAROLINAS

Derivatives (net)

Years Ended December 31,

2020

$ (102)
(84)

14 

(19)

117 

(3)

2019

$ (113)
— 

37 

(44)

— 

18 

$

(77)

$ (102)

The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. 

(in millions)

NDTF cash and cash equivalents

NDTF equity securities

NDTF debt securities
Derivative assets
Total assets

Derivative liabilities

Net assets

(in millions)

NDTF cash and cash equivalents
NDTF equity securities
NDTF debt securities

Total assets

Derivative liabilities

Net assets

December 31, 2020

Total Fair Value

Level 1

Level 2

Not Categorized

$

30 

$

30 

$ — 

$ — 

3,685 

1,250 
20 
4,985 

(20)

3,639 

192 
— 
3,861 

— 

— 

1,058 
20 
1,078 

(20)

$ 4,965 

$ 3,861 

$1,058 

$

46 

— 
— 
46 

— 

46 

December 31, 2019

Total Fair Value

Level 1

Level 2

Not Categorized

$

21 
3,154 
1,172 

4,347 

(49)

$

21 
3,103 
206 

3,330 

— 

$ — 
— 
966 

966 

(49)

$ 4,298 

$ 3,330 

$ 917 

$ — 
51 
— 

51 

— 

$ 51 

179

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)PROGRESS ENERGY

The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. 

(in millions)

NDTF cash and cash equivalents
NDTF equity securities
NDTF debt securities
Other debt securities
Other cash and cash equivalents
Derivative assets

Total assets

NDTF equity security contracts
Derivative liabilities

Net assets

DUKE ENERGY PROGRESS

December 31, 2020

December 31, 2019

Total Fair Value

Level 1

Level 2

Total Fair Value

Level 1

Level 2

$

147 
2,550 
1,467 
26 
106 
33 

4,329 

— 
(29)

$

147 
2,550 
682 
— 
106 
— 

3,485 

— 
— 

$ — 
— 
785 
26 

33 

844 

— 
(29)

$

80 
2,530 
1,196 
51 
49 
7 

3,913 

(23)
(65)

$

80 
2,530 
519 
— 
49 
— 

3,178 

— 
— 

$ — 
— 
677 
51 
— 
7 

735 

(23)
(65)

$ 4,300 

$ 3,485 

$ 815 

$ 3,825 

$ 3,178 

$ 647 

The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets.

(in millions)

NDTF cash and cash equivalents
NDTF equity securities
NDTF debt securities
Other cash and cash equivalents
Derivative assets

Total assets

Derivative liabilities

Net assets

DUKE ENERGY FLORIDA

December 31, 2020

December 31, 2019

Total Fair Value

Level 1

Level 2

Total Fair Value

Level 1

Level 2

$

76 
2,459 
993 
1 
33 

3,562 
(14)

$

76 
2,459 
237 
1 
— 

2,773 
— 

$ — 
— 
756 
— 
33 

789 
(14)

$

53 
2,077 
921 
2 
— 

3,053 
(49)

$

53 
2,077 
244 
2 
— 

2,376 
— 

$ — 
— 
677 
— 
— 

677 
(49)

$ 3,548 

$ 2,773 

$ 775 

$ 3,004 

$ 2,376 

$ 628 

The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. 

(in millions)

NDTF cash and cash equivalents

NDTF equity securities

NDTF debt securities
Other debt securities
Other cash and cash equivalents
Derivative assets

Total assets

NDTF equity security contracts
Derivative liabilities

Net assets

December 31, 2020

December 31, 2019

Total Fair Value

Level 1

Level 2

Total Fair Value

Level 1

Level 2

$

71 

91 

474 
26 
1 
— 

663 

— 
— 

$

71 

91 

445 
— 
1 
— 

608 

— 
— 

$ — 

$

— 

29 
26 
— 
— 

55 

— 
— 

27 

453 

275 
51 
4 
7 

817 

(23)
(1)

$

27 

453 

275 
— 
4 
— 

759 

— 
— 

$ — 

— 

— 
51 
— 
7 

58 

(23)
(1)

$

663 

$

608 

$

55 

$

793 

$

759 

$

34 

180

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)DUKE ENERGY OHIO

The recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets were not material at 

December 31, 2020, and 2019.

DUKE ENERGY INDIANA

The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. 

(in millions)

Other equity securities

Other debt securities

Other cash equivalents
Derivative assets
Total assets

Derivative liabilities

Total assets

December 31, 2020

December 31, 2019

Total Fair Value

Level 1 Level 2 Level 3

Total Fair Value

Level 1 Level 2 Level 3

$ 97 

$ 97 

$ — 

$ — 

$ 81 

$ 81 

$ — 

$ — 

45 

1 
6 
149 
(1)

— 

45 

— 
1 
— 
— 
98 
45 
(1) — 

— 

— 
6 
6 
— 

44 

— 
13 
138 
(1)

— 

44 

— 
— 
— 
2 
83 
44 
(1) — 

— 

— 
11 
11 
— 

$ 148 

$ 97 

$ 45 

$

6 

$ 137 

$ 82 

$ 44 

$ 11 

The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

(in millions)

Balance at beginning of period
Purchases, sales, issuances and settlements:

Purchases
Settlements

Total losses included on the Consolidated Balance Sheet

Balance at end of period

PIEDMONT

Derivatives (net)

Years Ended December 31,

2020

$ 11 

10 
(13)
(2)

2019

$ 22

28 
(36)
(3)

$ 6

$ 11

The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. 

(in millions)

Derivative assets
Derivative liabilities

Net (liabilities) assets

December 31, 2020

December 31, 2019

Total Fair Value Level 1 Level 2

Total Fair Value

Level 1 Level 3

$

1 
(122)

$ (121)

$

$

1  $ —
(122)

— 

1  $ (122)

$

1 
(117)

$ (116)

$

$

1  $ — 
(117)

— 

1  $ (117)

The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.

(in millions)

Balance at beginning of period

Net transfers Out of Level 3(a)

Total gains and settlements

Balance at end of period

(a)  Transferred from Level 3 to Level 2 because observable market data became available.

181

Derivatives (net)

Years Ended December 31,

2020

2019

$(117)

$ (141)

117 

— 

— 

24 

$ —

$ (117)

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS

The following tables include quantitative information about the Duke Energy Registrants’ derivatives classified as Level 3. 

Fair Value 
(in millions)

Valuation Technique

Unobservable Input

Range

Weighted
Average
Range

December 31, 2020

$ (84)

Discounted cash flow

Forward electricity curves – price per MWh

$ 14.68 — $ 151.84 $

28.84

1 

6 

RTO auction pricing

FTR price – per MWh

0.25  — 1.68 

0.79 

RTO auction pricing

FTR price – per MWh

(2.40) — 7.41 

1.05 

Investment Type
Duke Energy
Electricity contracts

Duke Energy Ohio

FTRs

Duke Energy Indiana

FTRs

Duke Energy

Total Level 3 derivatives

$ (77)

December 31, 2019

Fair Value 
(in millions)

Valuation Technique

Unobservable Input

Range

Weighted
Average
Range

$

4 

RTO auction pricing

FTR price – per MWh

$

0.59  — $

3.47 $

2.07

11 

RTO auction pricing

FTR price – per MWh

(0.66) — 9.24

(117)

Discounted cash flow

Forward natural gas curves – price per MMBtu

1.59 — 2.46

1.15

1.91

$ (102)

Investment Type

Duke Energy Ohio
FTRs
Duke Energy Indiana
FTRs

Piedmont

Natural gas contracts

Duke Energy

Total Level 3 derivatives

OTHER FAIR VALUE DISCLOSURES

The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily 

indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.

(in millions)

Duke Energy(a)
Duke Energy Carolinas
Progress Energy
Duke Energy Progress
Duke Energy Florida
Duke Energy Ohio
Duke Energy Indiana
Piedmont

December 31, 2020

December 31, 2019

Book Value

Fair Value

Book Value

Fair Value

$ 59,863
12,218 
19,264 
9,258 
7,915 
3,089 
4,091 
2,780 

$ 69,292 
14,917 
23,470 
10,862 
9,756 
3,650 
5,204 
3,306 

$ 58,126 
11,900 
19,634 
9,058 
7,987 
2,619 
4,057 
2,384 

$ 63,062 
13,516 
22,291 
9,934 
9,131 
2,964 
4,800 
2,642 

(a)  Book value of long-term debt includes $1.3 billion as of December 31, 2020, and $1.5 billion as of December 31, 2019, of unamortized debt discount and premium, net in purchase accounting adjustments related to the 

mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.

At both December 31, 2020, and December 31, 2019, fair value of cash and cash equivalents, accounts and notes receivable, accounts payable, notes payable 

and commercial paper, and nonrecourse notes payable of VIEs are not materially different from their carrying amounts because of the short-term nature of these 
instruments and/or because the stated rates approximate market rates.

182

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)17. VARIABLE INTEREST ENTITIES

A VIE is an entity that is evaluated for consolidation using more than 
a simple analysis of voting control. The analysis to determine whether an 
entity is a VIE considers contracts with an entity, credit support for an entity, 
the adequacy of the equity investment of an entity and the relationship of 
voting power to the amount of equity invested in an entity. This analysis is 
performed either upon the creation of a legal entity or upon the occurrence of 
an event requiring reevaluation, such as a significant change in an entity’s 
assets or activities. A qualitative analysis of control determines the party that 
consolidates a VIE. This assessment is based on (i) what party has the power 
to direct the activities of the VIE that most significantly impact its economic 
performance and (ii) what party has rights to receive benefits or is obligated to 
absorb losses that could potentially be significant to the VIE. The analysis of the 
party that consolidates a VIE is a continual reassessment.

CONSOLIDATED VIEs

The obligations of the consolidated VIEs discussed in the following 
paragraphs are nonrecourse to the Duke Energy Registrants. The registrants 
have no requirement to provide liquidity to, purchase assets of or guarantee 
performance of these VIEs unless noted in the following paragraphs.

No financial support was provided to any of the consolidated VIEs during 

the years ended December 31, 2020, 2019 and 2018, or is expected to be 
provided in the future, that was not previously contractually required.

Receivables Financing – DERF/DEPR/DEFR

DERF, DEPR and DEFR are bankruptcy remote, special purpose 

subsidiaries of Duke Energy Carolinas, Duke Energy Progress and Duke Energy 
Florida, respectively. DERF, DEPR and DEFR are wholly owned LLCs with 
separate legal existence from their parent companies, and their assets are not 
generally available to creditors of their parent companies. On a revolving basis, 
DERF, DEPR and DEFR buy certain accounts receivable arising from the sale of 
electricity and related services from their parent companies.

DERF, DEPR and DEFR borrow amounts under credit facilities to buy 
these receivables. Borrowing availability from the credit facilities is limited 
to the amount of qualified receivables purchased, which generally exclude 
receivables past due more than a predetermined number of days and reserves 
for expected past-due balances. The sole source of funds to satisfy the related 
debt obligations is cash collections from the receivables. Amounts borrowed 
under the credit facilities for DERF and DEPR are reflected on the Consolidated 
Balance Sheets as Long-Term Debt. Amounts borrowed under the credit facilities 
for DEFR are reflected on the Consolidated Balance Sheets as Current maturities 
of long-term debt.

Due to the COVID-19 pandemic, as described in Note 1, the Duke Energy 

Registrants suspended customer disconnections for nonpayment. Since 
taking action to suspend customer disconnections for nonpayment, certain 
jurisdictions have now returned to normal operations and billing practices. The 
full impact of COVID-19 and the Duke Energy Registrant’s related response on 
customers’ ability to pay for service is uncertain. However, the level of past-due 
receivables at Duke Energy Carolinas, Duke Energy Progress and Duke Energy 
Florida have increased significantly during the COVID-19 pandemic, and it is 
reasonably possible eventual write-offs of customer receivables may increase 
over current estimates. In 2020, DERF, DEPR and DEFR executed amendments 

183

to their credit facilities to manage the impact of past-due receivables resulting 
from the suspension of customer disconnections from COVID-19. See Note 3 for 
information about COVID-19 filings with state utility commissions.

The most significant activity that impacts the economic performance 

of DERF, DEPR and DEFR are the decisions made to manage delinquent 
receivables. Duke Energy Carolinas, Duke Energy Progress and Duke Energy 
Florida are considered the primary beneficiaries and consolidate DERF, DEPR 
and DEFR, respectively, as they make those decisions.

Receivables Financing – CRC

CRC is a bankruptcy remote, special purpose entity indirectly owned 
by Duke Energy. On a revolving basis, CRC buys certain accounts receivable 
arising from the sale of electricity, natural gas and related services from Duke 
Energy Ohio and Duke Energy Indiana. CRC borrows amounts under a credit 
facility to buy the receivables from Duke Energy Ohio and Duke Energy Indiana. 
Borrowing availability from the credit facility is limited to the amount of qualified 
receivables sold to CRC, which generally exclude receivables past due more than 
a predetermined number of days and reserves for expected past-due balances. 
The sole source of funds to satisfy the related debt obligation is cash collections 
from the receivables. Amounts borrowed under the credit facility are reflected on 
Duke Energy’s Consolidated Balance Sheets as Long-Term Debt.

The proceeds Duke Energy Ohio and Duke Energy Indiana receive from the 
sale of receivables to CRC are approximately 75% cash and 25% in the form of 
a subordinated note from CRC. The subordinated note is a retained interest in the 
receivables sold. Depending on collection experience, additional equity infusions 
to CRC may be required by Duke Energy to maintain a minimum equity balance 
of $3 million. 

Due to the COVID-19 pandemic, as described in Note 1, the Duke Energy 
Registrants suspended customer disconnections for nonpayment. Since taking 
action to suspend customer disconnections for nonpayment, certain jurisdictions 
have now returned to normal operations and billing practices. The full impact 
of COVID-19 and the Duke Energy Registrant’s related response on customers’ 
ability to pay for service is uncertain. However, the level of past-due receivables 
at Duke Energy Ohio and Duke Energy Indiana have increased significantly during 
the COVID-19 pandemic, and it is reasonably possible eventual write-offs of 
customer receivables may increase over current estimates. In July of 2020, CRC 
executed an amendment to its credit facility to manage the impact of past-due 
receivables resulting from the suspension of customer disconnections from 
COVID-19. See Note 3 for information about COVID-19 filings with state utility 
commissions.

CRC is considered a VIE because (i) equity capitalization is insufficient to 
support its operations, (ii) power to direct the activities that most significantly 
impact the economic performance of the entity is not held by the equity holder 
and (iii) deficiencies in net worth of CRC are funded by Duke Energy. The most 
significant activities that impact the economic performance of CRC are decisions 
made to manage delinquent receivables. Duke Energy is considered the primary 
beneficiary and consolidates CRC as it makes these decisions. Neither Duke 
Energy Ohio nor Duke Energy Indiana consolidate CRC.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Receivables Financing – Credit Facilities

The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above.

(in millions)

Expiration date
Credit facility amount
Amounts borrowed at December 31, 2020
Amounts borrowed at December 31, 2019
Restricted Receivables at December 31, 2020
Restricted Receivables at December 31, 2019

Duke Energy

Duke Energy  
Carolinas

Duke Energy  
Progress

Duke Energy  
Florida

CRC

DERF

February 2023  December 2022 
$ 475
364 
474 
696 
642 

$ 350
350 
350 
547 
522 

DEPR

April 2023 
$ 350
250 
325 
500 
489 

DEFR

April 2021 
$ 250
250 
250 
397 
336 

Nuclear Asset-Recovery Bonds – Duke Energy Florida Project Finance, LLC (DEFPF)

DEFPF is a bankruptcy remote, wholly owned special purpose subsidiary of Duke Energy Florida. DEFPF was formed in 2016 for the sole purpose of issuing 

nuclear asset-recovery bonds to finance Duke Energy Florida’s unrecovered regulatory asset related to Crystal River Unit 3. 

In 2016, DEFPF issued senior secured bonds and used the proceeds to acquire nuclear asset-recovery property from Duke Energy Florida. The nuclear asset-
recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge from all Duke Energy Florida retail 
customers until the bonds are paid in full and all financing costs have been recovered. The nuclear asset-recovery bonds are secured by the nuclear asset-recovery 
property and cash collections from the nuclear asset-recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to 
Duke Energy Florida. 

DEFPF is considered a VIE primarily because the equity capitalization is insufficient to support its operations. Duke Energy Florida has the power to direct the 

significant activities of the VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates DEFPF.

The following table summarizes the impact of DEFPF on Duke Energy Florida’s Consolidated Balance Sheets.

(in millions)

Receivables of VIEs
Regulatory Assets: Current
Current Assets: Other
Other Noncurrent Assets: Regulatory assets
Current Liabilities: Other
Current maturities of long-term debt
Long-Term Debt

Commercial Renewables

December 31,

$

2020

4 
53 
39 
937 
10 
55 
1,002 

$

2019

5 
52 
39 
989 
10 
54 
1,057 

Certain of Duke Energy’s renewable energy facilities are VIEs due to Duke Energy issuing guarantees for debt service and operations and maintenance reserves 

in support of debt financings. Assets are restricted and cannot be pledged as collateral or sold to third parties without prior approval of debt holders. Additionally, 
Duke Energy has VIEs associated with tax equity arrangements entered into with third-party investors in order to finance the cost of renewable assets eligible for 
tax credits. The activities that most significantly impacted the economic performance of these renewable energy facilities were decisions associated with siting, 
negotiating PPAs and EPC agreements, and decisions associated with ongoing operations and maintenance-related activities. Duke Energy is considered the primary 
beneficiary and consolidates the entities as it is responsible for all of these decisions.

184

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The table below presents material balances reported on Duke Energy’s Consolidated Balance Sheets related to Commercial Renewables VIEs.

(in millions)

Current Assets: Other
Property, Plant and Equipment: Cost
Accumulated depreciation and amortization
Other Noncurrent Assets: Other
Current maturities of long-term debt
Long-Term Debt
Other Noncurrent Liabilities: AROs
Other Noncurrent Liabilities: Other

NON-CONSOLIDATED VIEs

The following tables summarize the impact of non-consolidated VIEs on the Consolidated Balance Sheets.

December 31,

$

2020

257
6,394 
(1,242)
67 
167 
1,569 
148 
316 

$

2019

203 
5,747
(1,041)
106 
162 
1,541 
127 
228 

(in millions)

Receivables from affiliated companies

Investments in equity method unconsolidated affiliates

Other noncurrent assets

Total assets

Other current liabilities
Other noncurrent liabilities

Total liabilities

Net assets (liabilities)

(in millions)

Receivables from affiliated companies

Investments in equity method unconsolidated affiliates

Total assets

Taxes accrued

Other current liabilities

Deferred income taxes

Other noncurrent liabilities

Total liabilities

Net assets

The Duke Energy Registrants are not aware of any situations where the 
maximum exposure to loss significantly exceeds the carrying values shown above 
except for the PPA with OVEC, which is discussed below, and future exit costs 
associated with the cancellation of the ACP pipeline, as discussed below.

December 31, 2020

Duke Energy

Pipeline  
Investments

Commercial 
Renewables

Total

Duke  
Energy  
Ohio

Duke 
Energy 
Indiana

$ — 

$ — 

$ — 

$ 83 

$

110 

$

— 

31 

31 

928 
8 

$ 936 

$ (905)

530 

— 

$ 530 

$

5 
10 

15 

$

$ 515 

$

$

530 

31 

561 

933 
18 

951 

— 

— 

— 

— 

$ 83 

$

110 

— 
— 

— 
— 

$ — 

$ — 

(390)

$ 83 

$

110 

December 31, 2019

Duke Energy

Pipeline  
Investments

Commercial 
Renewables

Total

$ — 

1,179 

$ 1,179 

(1)

— 

59 

— 

58 

$

$

(1)

$

(1)

300 

1,479 

$ 299 

$ 1,478 

— 

4 

— 

11 

$

15 

$

(1)

4 

59 

11 

73 

Duke  
Energy  
Ohio

$ 64 

— 

$ 64 

— 

— 

— 

— 

Duke 
Energy 
Indiana

$

$

77 

— 

77 

— 

— 

— 

— 

$ — 

$ — 

$ 1,121 

$ 284 

$ 1,405 

$ 64 

$

77 

Pipeline Investments

Duke Energy has investments in various joint ventures to construct and 

operate pipeline projects. These entities are considered VIEs due to having 
insufficient equity to finance their own activities without subordinated financial 
support. Duke Energy does not have the power to direct the activities that most 

185

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)significantly impact the economic performance, the obligation to absorb losses 
or the right to receive benefits of these VIEs and therefore does not consolidate 
these entities. 

Duke Energy has a 47% ownership interest in ACP. In 2020, Duke Energy 

determined that it would no longer invest in the construction of the ACP pipeline. 
The current liability related to the cancellation of the ACP pipeline represents 
Duke Energy’s continuing obligation to fund its share of ACP’s obligations. See 
Notes 3, 7 and 12 for further information regarding this transaction.

Commercial Renewables

Duke Energy has investments in various renewable energy project entities. 

Some of these entities are VIEs due to Duke Energy issuing guarantees for debt 
service and operations and maintenance reserves in support of debt financings. 
Duke Energy does not consolidate these VIEs because power to direct and 
control key activities is shared jointly by Duke Energy and other owners. 

OVEC

Duke Energy Ohio’s 9% ownership interest in OVEC is considered a non-
consolidated VIE due to OVEC having insufficient equity to finance its activities 
without subordinated financial support. The activities that most significantly 
impact OVEC’s economic performance include fuel strategy and supply activities 
and decisions associated with ongoing operations and maintenance-related 
activities. Duke Energy Ohio does not have the unilateral power to direct these 
activities, and therefore, does not consolidate OVEC.

As a counterparty to an Inter-Company Power Agreement (ICPA), Duke 

Energy Ohio has a contractual arrangement to receive entitlements to capacity 
and energy from OVEC’s power plants through June 2040 commensurate with its 
power participation ratio, which is equivalent to Duke Energy Ohio’s ownership 
interest. Costs, including fuel, operating expenses, fixed costs, debt amortization 
and interest expense, are allocated to counterparties to the ICPA based on their 
power participation ratio. The value of the ICPA is subject to variability due to 
fluctuation in power prices and changes in OVEC’s cost of business. On March 

31, 2018, FES, a subsidiary of FirstEnergy Corp. and an ICPA counterparty with a 
power participation ratio of 4.85%, filed for Chapter 11 bankruptcy, which could 
increase costs allocated to the counterparties. On July 31, 2018, the bankruptcy 
court rejected the FES ICPA, which means OVEC is an unsecured creditor in 
the FES bankruptcy proceeding. Duke Energy Ohio cannot predict the impact 
of the bankruptcy filing on its OVEC interests. In addition, certain proposed 
environmental rulemaking could result in future increased OVEC cost allocations. 
In July 2020, legislation was proposed to repeal HB 6. Duke Energy cannot 
predict the outcome of this matter. See Note 3 for additional information.

CRC

See discussion under Consolidated VIEs for additional information related 

to CRC.

Amounts included in Receivables from affiliated companies in the above 

table for Duke Energy Ohio and Duke Energy Indiana reflect their retained 
interest in receivables sold to CRC. These subordinated notes held by Duke 
Energy Ohio and Duke Energy Indiana are stated at fair value. Carrying 
values of retained interests are determined by allocating carrying value of 
the receivables between assets sold and interests retained based on relative 
fair value. The allocated bases of the subordinated notes are not materially 
different than their face value because (i) the receivables generally turnover in 
less than two months, (ii) credit losses are reasonably predictable due to the 
broad customer base and lack of significant concentration and (iii) the equity in 
CRC is subordinate to all retained interests and thus would absorb losses first. 
The hypothetical effect on fair value of the retained interests assuming both a 
10% and a 20% unfavorable variation in credit losses or discount rates is not 
material due to the short turnover of receivables and historically low credit loss 
history. Interest accrues to Duke Energy Ohio and Duke Energy Indiana on the 
retained interests using the acceptable yield method. This method generally 
approximates the stated rate on the notes since the allocated basis and the 
face value are nearly equivalent. An impairment charge is recorded against 
the carrying value of both retained interests and purchased beneficial interest 
whenever it is determined that an OTTI has occurred.

Key assumptions used in estimating fair value are detailed in the following table.

Anticipated credit loss ratio
Discount rate
Receivable turnover rate

The following table shows the gross and net receivables sold.

(in millions)

Receivables sold
Less: Retained interests
Net receivables sold

186

Duke Energy Ohio

Duke Energy Indiana

2020

0.5 %
1.6 %
13.4 %

2019

0.6 %
3.3 %
13.4 %

2020

0.3 %
1.6 %
11.3 %

2019

0.3 %
3.3 %
11.5 %

Duke Energy Ohio

Duke Energy Indiana

December 31,

December 31,

2020

$ 270 
83 
$ 187 

2019

$ 253 
64 
$ 189 

2020

$ 344 
110 
$ 234 

2019

307 
77 
230 

$

$

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The following table shows sales and cash flows related to receivables sold.

(in millions)

Sales
Receivables sold
Loss recognized on sale
Cash flows
Cash proceeds from receivables sold
Collection fees received
Return received on retained interests

Duke Energy Ohio

Duke Energy Indiana

Years Ended December 31,

Years Ended December 31,

2020

2019

2018

2020

2019

2018

$1,905 
10 

1,875 
1 
4 

$1,979 
14 

$1,987 
13 

$2,631 
12 

$ 2,837
17 

$ 2,842 
16 

1,993 
1 
6 

1,967 
1 
6 

2,586 
1 
5 

2,860 
1 
9 

2,815 
1 
9 

Cash flows from sales of receivables are reflected within Cash Flows From 

Operating Activities and Cash Flows from Investing Activities on Duke Energy 
Ohio’s and Duke Energy Indiana’s Consolidated Statements of Cash Flows.

Collection fees received in connection with servicing transferred accounts 

receivable are included in Operation, maintenance and other on Duke Energy 
Ohio’s and Duke Energy Indiana’s Consolidated Statements of Operations 
and Comprehensive Income. The loss recognized on sales of receivables 

is calculated monthly by multiplying receivables sold during the month by 
the required discount. The required discount is derived monthly utilizing a 
three-year weighted average formula that considers charge-off history, late 
charge history and turnover history on the sold receivables, as well as a 
component for the time value of money. The discount rate, or component for the 
time value of money, is the prior month-end LIBOR plus a fixed rate of 1%.

18. REVENUE

Duke Energy recognizes revenue consistent with amounts billed under 
tariff offerings or at contractually agreed upon rates based on actual physical 
delivery of electric or natural gas service, including estimated volumes delivered 
when billings have not yet occurred. As such, the majority of Duke Energy’s 
revenues have fixed pricing based on the contractual terms of the published 
tariffs, with variability in expected cash flows attributable to the customer’s 
volumetric demand and ultimate quantities of energy or natural gas supplied 
and used during the billing period. The stand-alone selling price of related sales 
are designed to support recovery of prudently incurred costs and an appropriate 
return on invested assets and are primarily governed by published tariff rates 
or contractual agreements approved by relevant regulatory bodies. As described 
in Note 1, certain excise taxes and franchise fees levied by state or local 
governments are required to be paid even if not collected from the customer. 
These taxes are recognized on a gross basis as part of revenues. Duke Energy 
elects to account for all other taxes net of revenues.

Performance obligations are satisfied over time as energy or natural gas 

is delivered and consumed with billings generally occurring monthly and related 
payments due within 30 days, depending on regulatory requirements. In no 
event does the timing between payment and delivery of the goods and services 
exceed one year. Using this output method for revenue recognition provides a 
faithful depiction of the transfer of electric and natural gas service as customers 
obtain control of the commodity and benefit from its use at delivery. Additionally, 
Duke Energy has an enforceable right to consideration for energy or natural gas 
delivered at any discrete point in time and will recognize revenue at an amount 
that reflects the consideration to which Duke Energy is entitled for the energy or 
natural gas delivered.

As described above, the majority of Duke Energy’s tariff revenues are 

at-will and, as such, related contracts with customers have an expected 
duration of one year or less and will not have future performance obligations for 
disclosure. Additionally, other long-term revenue streams, including wholesale 
contracts, generally provide services that are part of a single performance 
obligation, the delivery of electricity or natural gas. As such, other than material 

fixed consideration under long-term contracts, related disclosures for future 
performance obligations are also not applicable.

Duke Energy earns substantially all of its revenues through its reportable 
segments, Electric Utilities and Infrastructure, Gas Utilities and Infrastructure 
and Commercial Renewables.

Electric Utilities and Infrastructure

Electric Utilities and Infrastructure earns the majority of its revenues 

through retail and wholesale electric service through the generation, 
transmission, distribution and sale of electricity. Duke Energy generally provides 
retail and wholesale electric service customers with their full electric load 
requirements or with supplemental load requirements when the customer has 
other sources of electricity.

Retail electric service is generally marketed throughout Duke Energy’s 

electric service territory through standard service offers. The standard service 
offers are through tariffs determined by regulators in Duke Energy’s regulated 
service territory. Each tariff, which is assigned to customers based on customer 
class, has multiple components such as an energy charge, a demand charge, 
a basic facilities charge and applicable riders. Duke Energy considers each 
of these components to be aggregated into a single performance obligation 
for providing electric service, or in the case of distribution only customers in 
Duke Energy Ohio, for delivering electricity. Electricity is considered a single 
performance obligation satisfied over time consistent with the series guidance 
and is provided and consumed over the billing period, generally one month. 
Retail electric service is typically provided to at-will customers who can cancel 
service at any time, without a substantive penalty. Additionally, Duke Energy 
adheres to applicable regulatory requirements in each jurisdiction to ensure 
the collectability of amounts billed and appropriate mitigating procedures are 
followed when necessary. As such, revenue from contracts with customers for 
such contracts is equivalent to the electricity supplied and billed in that period 
(including unbilled estimates).

187

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
Wholesale electric service is generally provided under long-term 
contracts using cost-based pricing. FERC regulates costs that may be 
recovered from customers and the amount of return companies are permitted 
to earn. Wholesale contracts include both energy and demand charges. For 
full requirements contracts, Duke Energy considers both charges as a single 
performance obligation for providing integrated electric service. For contracts 
where energy and demand charges are considered separate performance 
obligations, energy and demand are each a distinct performance obligation 
under the series guidance and are satisfied as energy is delivered and 
stand-ready service is provided on a monthly basis. This service represents 
consumption over the billing period and revenue is recognized consistent with 
billings and unbilled estimates, which generally occur monthly. Contractual 

amounts owed are typically trued up annually based upon incurred costs in 
accordance with FERC published filings and the specific customer’s actual 
peak demand. Estimates of variable consideration related to potential additional 
billings or refunds owed are updated quarterly. 

The majority of wholesale revenues are full requirements contracts where 

the customers purchase the substantial majority of their energy needs and do 
not have a fixed quantity of contractually required energy or capacity. As such, 
related forecasted revenues are considered optional purchases. Supplemental 
requirements contracts that include contracted blocks of energy and capacity at 
contractually fixed prices have the following estimated remaining performance 
obligations:

(in millions)

Progress Energy
Duke Energy Progress
Duke Energy Florida
Duke Energy Indiana

Remaining Performance Obligations

$

2021

93 
8 
85 
5 

2022

$ 107 
8 
99 
— 

2023

2024

2025

Thereafter

$

44 
8 
36 
7 

$

45 
8 
37 
12 

$

7 
— 
7 
12 

$

51 
— 
51 
24 

Total

$ 347 
32 
315 
60 

Revenues for block sales are recognized monthly as energy is delivered 

and stand-ready service is provided, consistent with invoiced amounts and 
unbilled estimates.

Gas Utilities and Infrastructure

Gas Utilities and Infrastructure earns its revenue through retail and 
wholesale natural gas service through the transportation, distribution and sale 
of natural gas. Duke Energy generally provides retail and wholesale natural gas 
service customers with all natural gas load requirements. Additionally, while 
natural gas can be stored, substantially all natural gas provided by Duke Energy 
is consumed by customers simultaneously with receipt of delivery.

Retail natural gas service is marketed throughout Duke Energy’s natural 
gas service territory using published tariff rates. The tariff rates are established 
by regulators in Duke Energy’s service territories. Each tariff, which is assigned 
to customers based on customer class, have multiple components, such 
as a commodity charge, demand charge, customer or monthly charge and 
transportation costs. Duke Energy considers each of these components to 
be aggregated into a single performance obligation for providing natural gas 
service. For contracts where Duke Energy provides all of the customer’s natural 
gas needs, the delivery of natural gas is considered a single performance 

obligation satisfied over time, and revenue is recognized monthly based on 
billings and unbilled estimates as service is provided and the commodity is 
consumed over the billing period. Additionally, natural gas service is typically 
at-will and customers can cancel service at any time, without a substantive 
penalty. Duke Energy also adheres to applicable regulatory requirements to 
ensure the collectability of amounts billed and receivable and appropriate 
mitigating procedures are followed when necessary.

Certain long-term individually negotiated contracts exist to provide natural 
gas service. These contracts are regulated and approved by state commissions. 
The negotiated contracts have multiple components, including a natural gas and 
a demand charge, similar to retail natural gas contracts. Duke Energy considers 
each of these components to be a single performance obligation for providing 
natural gas service. This service represents consumption over the billing period, 
generally one month.

Fixed capacity payments under long-term contracts for the Gas Utilities 

and Infrastructure segment include minimum margin contracts and supply 
arrangements with municipalities and power generation facilities. Revenues for 
related sales are recognized monthly as natural gas is delivered and stand-
ready service is provided, consistent with invoiced amounts and unbilled 
estimates. Estimated remaining performance obligations are as follows:

(in millions)

Piedmont

Remaining Performance Obligations

2021

2022

2023

2024

2025

Thereafter

Total

$

65 

$

64 

$

61 

$

59 

$

58 

$

319 

$ 626 

188

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Commercial Renewables

Commercial Renewables earns the majority of its revenues through 
long-term PPAs and generally sells all of its wind and solar facility output, 
electricity and RECs to customers. The majority of these PPAs have historically 
been accounted for as leases. For PPAs that are not accounted for as leases, 
the delivery of electricity and the delivery of RECs are considered separate 
performance obligations. 

The delivery of electricity is a performance obligation satisfied over time 

and represents generation and consumption of the electricity over the billing 
period, generally one month. The delivery of RECs is a performance obligation 
satisfied at a point in time and represents delivery of each REC generated by 
the wind or solar facility. The majority of self-generated RECs are bundled 
with energy in Duke Energy’s contracts and, as such, related revenues are 
recognized as energy is generated and delivered as that pattern is consistent 
with Duke Energy’s performance. Commercial Renewables recognizes revenue 
based on the energy generated and billed for the period, generally one month, 
at contractual rates (including unbilled estimates) according to the invoice 
practical expedient. Amounts are typically due within 30 days of invoice.
Commercial Renewables also earns revenues from installation of 
distributed solar generation resources, which is primarily composed of EPC 
projects to deliver functioning solar power systems, generally completed 
within two to 12 months from commencement of construction. The installation 
of distributed solar generation resources is a performance obligation that is 
satisfied over time. Revenue from fixed-price EPC contracts is recognized using 

the input method as work is performed based on the estimated ratio of incurred 
costs to estimated total costs.

Other

The remainder of Duke Energy’s operations is presented as Other, which 

does not include material revenues from contracts with customers.

Disaggregated Revenues

For the Electric and Gas Utility and Infrastructure segments, revenue by 

customer class is most meaningful to Duke Energy as each respective customer 
class collectively represents unique customer expectations of service, generally 
has different energy and demand requirements, and operates under tailored, 
regulatory approved pricing structures. Additionally, each customer class is 
impacted differently by weather and a variety of economic factors including 
the level of population growth, economic investment, employment levels, and 
regulatory activities in each of Duke Energy’s jurisdictions. As such, analyzing 
revenues disaggregated by customer class allows Duke Energy to understand 
the nature, amount, timing and uncertainty of revenue and cash flows arising 
from contracts with customers. For the Commercial Renewables segment, the 
majority of revenues from contracts with customers are from selling all of the 
unit-contingent output at contractually defined pricing under long-term PPAs 
with consistent expectations regarding the timing and certainty of cash flows. 
Disaggregated revenues are presented as follows:

(in millions)
By market or type of customer

Electric Utilities and Infrastructure

Residential
General
Industrial
Wholesale
Other revenues

Total Electric Utilities and Infrastructure revenue from 
contracts with customers
Gas Utilities and Infrastructure

Residential
Commercial
Industrial
Power Generation
Other revenues

Total Gas Utilities and Infrastructure revenue from  
contracts with customers
Commercial Renewables
Revenue from contracts with customers
Other
Revenue from contracts with customers
Total revenue from contracts with customers
Other revenue sources(a)

Total revenues

Year Ended December 31, 2020

Duke
Energy

$ 9,806 
6,194 
2,859 
1,864 
914 

Duke
Energy
Carolinas

$ 2,997 
2,233 
1,137 
380 
281 

Progress
Energy

$ 5,017 
2,779 
901 
1,228 
596 

Duke
Energy
Progress

$2,059 
1,312 
649 
1,034 
294 

Duke
Energy
Florida

$ 2,958 
1,467 
252 
194 
302 

Duke
Energy
Ohio

$ 726 
442 
137 
32 
82 

Duke
Energy
Indiana

$1,064 
740 
683 
224 
72 

Piedmont

$ —
—
—
—
—

$ 21,637 

$ 7,028 

$ 10,521 

$5,348 

$ 5,173 

$ 1,419 

$2,783 

$ — 

$

930
446 
127 
— 
87 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$ 300
117 
17 
— 
17 

$ —
— 
— 
— 
— 

$ 630
329 
110 
34 
70 

$ 1,590

$ —

$ —

$ —

$ —

$ 451

$ —

$1,173

$

227

$ —

$ —

$ —

$ —

$ —

$ —

$ —

$
26
$ 23,480
388
$

$ 23,868

$ —
$ 7,028
(13)
$

$ 7,015

$ —
$ 10,521
106
$

$ 10,627

$ —
$5,348
74
$

$5,422

$ —
$ 5,173
15
$

$ 5,188

$ —
$ 1,870
$ (12)

$ 1,858

$ —
$2,783
12
$

$2,795

$ —
$1,173
$ 124

$1,297

(a)  Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions 

include regulatory mechanisms that periodically adjust for over or under collection of related revenues. 

189

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)(in millions)
By market or type of customer

Electric Utilities and Infrastructure

Residential
General
Industrial
Wholesale
Other revenues

Total Electric Utilities and Infrastructure revenue from 
contracts with customers
Gas Utilities and Infrastructure

Residential
Commercial
Industrial
Power Generation
Other revenues

Total Gas Utilities and Infrastructure revenue from  
contracts with customers
Commercial Renewables
Revenue from contracts with customers
Other
Revenue from contracts with customers
Total revenue from contracts with customers
Other revenue sources(a)

Total revenues

Year Ended December 31, 2019

Duke
Energy

$ 9,863
6,431 
3,071 
2,212 
770 

Duke
Energy
Carolinas

$ 3,044
2,244 
1,215 
462 
276 

Progress
Energy

$ 4,998
2,935 
934 
1,468 
548 

Duke
Energy
Progress

$2,144
1,368 
675 
1,281 
317 

Duke
Energy
Florida

$ 2,854
1,567 
259 
187 
231 

Duke
Energy
Ohio

$

733
451 
147 
46 
80 

Duke
Energy
Indiana

$1,087
802 
774 
235 
89 

Piedmont

$ —
—
—
—
—

$ 22,347 

$ 7,241

$ 10,883

$5,785

$ 5,098

$ 1,457

$2,987

$ —

$

976
508 
141 
— 
129 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$

315
130 
19 
— 
19 

$ —
— 
— 
— 
— 

$ 661
378 
122 
51 
110 

$ 1,754

$ —

$ —

$ —

$ —

$

483

$ —

$1,322

$

223

$ —

$ —

$ —

$ —

$ —

$ —

$ —

24
$
$ 24,348
731
$

$ 25,079

$ —
$ 7,241
154
$

$ 7,395

$ —
$ 10,883
319
$

$ 11,202

$ —
$5,785
$ 172

$5,957

$ —
$ 5,098
133
$

$ 5,231

$ —
$ 1,940
$ —

$ 1,940

$ —
$2,987
17
$

$3,004

$ —
$1,322
59
$

$1,381

(a)  Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions 

include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

(in millions)
By market or type of customer

Electric Utilities and Infrastructure

Residential
General
Industrial
Wholesale
Other revenues

Total Electric Utilities and Infrastructure revenue from 
contracts with customers
Gas Utilities and Infrastructure

Residential
Commercial
Industrial
Power Generation
Other revenues

Total Gas Utilities and Infrastructure revenue from  
contracts with customers
Commercial Renewables
Revenue from contracts with customers
Other
Revenue from contracts with customers
Total revenue from contracts with customers

Other revenue sources(a)
Total revenues

Year Ended December 31, 2018

Duke
Energy

$ 9,587
6,127 
2,974 
2,324 
717 

Duke
Energy
Carolinas

$ 2,981
2,119 
1,180 
508 
320 

Progress
Energy

$ 4,785
2,809 
904 
1,462 
502 

Duke
Energy
Progress

$2,019
1,280 
642 
1,303 
320 

Duke
Energy
Florida

$ 2,766
1,529 
262 
159 
182 

Duke
Energy
Ohio

$

743
422 
131 
57 
73 

Duke
Energy
Indiana

$1,076
778 
760 
298 
91 

Piedmont

$ —
—
—
—
—

$ 21,729

$ 7,108

$ 10,462

$5,564

$ 4,898

$ 1,426

$3,003

$ —

$ 1,000
514 
147 
— 
139 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$ —
— 
— 
— 
— 

$

331
135 
18 
— 
19 

$ —
— 
— 
— 
— 

$ 669
378 
128 
54 
120 

$ 1,800

$ —

$ —

$ —

$ —

$

503

$ —

$1,349

$

209

$ —

$ —

$ —

$ —

$ —

$ —

$ —

$
19
$ 23,757

$
764
$ 24,521

$ —
$ 7,108

$
192
$ 7,300 

$ —
$ 10,462

$
266
$ 10,728 

$ —
$5,564

$ 135
$5,699 

$ —
$ 4,898

$
123
$ 5,021 

$
1
$ 1,930

$
27
$ 1,957 

$ —
$3,003

$
56
$3,059 

$ —
$1,349

$
26
$1,375 

(a)  Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions 

include regulatory mechanisms that periodically adjust for over or under collection of related revenues.

190

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)As described in Note 1, Duke Energy adopted the new guidance for credit losses effective January 1, 2020, using the modified retrospective method of adoption, 

which does not require restatement of prior year reported results. The following table presents the reserve for credit losses for trade and other receivables based on 
adoption of the new standard.

(in millions)

Balance at December 31, 2019
Cumulative Change in Accounting Principle
Write-Offs
Credit Loss Expense
Other Adjustments

$

Duke
Energy

76 
5 
(58)
75 
48 

Balance at December 31, 2020

$

146 

Year Ended December 31, 2020

Duke
Energy
Carolinas

$

$

10 
1 
(13)
13 
12 

23 

Progress
Energy

$

$

16 
2 
(23)
29 
13 

37 

Duke
Energy
Progress

$

$

8 
1 
(8)
9 
13 

23 

Duke
Energy
Florida

$

$

7 
1 
(14)
20 
— 

14 

Duke
Energy
Ohio

$

$

4 
— 
— 
— 
— 

4 

Duke
Energy
Indiana

$

$

3 
— 
— 
— 
— 

3 

Piedmont

$

$

6 
1 
(6)
11 
— 

12 

Trade and other receivables are evaluated based on an estimate of the 
risk of loss over the life of the receivable and current and historical conditions 
using supportable assumptions. Management evaluates the risk of loss for 
trade and other receivables by comparing the historical write-off amounts to 
total revenue over a specified period. Historical loss rates are adjusted due to 
the impact of current conditions, including the impacts of COVID-19, as well as 
forecasted conditions over a reasonable time period. The calculated write-off 
rate can be applied to the receivable balance for which an established reserve 
does not already exist. Management reviews the assumptions and risk of loss 
periodically for trade and other receivables. Due to the COVID-19 pandemic, as 

described in Note 1, certain jurisdictions have resumed standard billing and 
credit practices, disconnections for nonpayment and late payment charges, all 
of which were previously suspended in the first quarter of 2020. The specific 
actions taken by each Duke Energy Registrant are described in Note 3 and the 
impact of COVID-19 on certain receivables financing entities are described 
in Note 17. The impact of COVID-19 and Duke Energy’s related response on 
customers’ ability to pay for service is uncertain, and it is reasonably possible 
eventual write-offs of customer receivables may increase over current 
estimates.

The aging of trade receivables is presented in the table below. Duke Energy considers receivables greater than 30 days outstanding past due.

(in millions)

Unbilled Receivables
0-30 days
30-60 days
60-90 days
90+ days
Deferred Payment Arrangements(a)

Trade and Other Receivables

$

Duke
Energy

969 
1,789 
185 
22 
119 
215 

$ 3,299 

Duke
Energy
Carolinas

$ 328 
445 
80 
1 
16 
96 

$ 966 

December 31, 2020

Progress
Energy

$

283 
707 
54 
10 
32 
80 

$ 1,166 

Duke
Energy
Progress

$ 167 
398 
25 
4 
9 
52 

$ 655 

Duke
Energy
Florida

$ 116 
307 
29 
6 
23 
28 

$ 509 

Duke
Energy
Ohio

Duke
Energy
Indiana

$

$

2 
60 
8 
2 
30 
— 

$ 102 

$

16 
26 
3 
1 
12 
— 

58 

Piedmont

$

86 
149 
8 
3 
9 
7 

$ 262 

(a)  Due to certain customer financial hardships created by the COVID-19 pandemic and resulting stay-at-home orders, Duke Energy permitted customers to defer payment of past-due amounts through an installment payment 

plan over a period of several months.

IMPACT OF WEATHER AND THE TIMING OF BILLING PERIODS

Revenues and costs are influenced by seasonal weather patterns. Peak 
sales of electricity occur during the summer and winter months, which results 
in higher revenue and cash flows during these periods. By contrast, lower sales 
of electricity occur during the spring and fall, allowing for scheduled plant 
maintenance. Residential and general service customers are more impacted 
by weather than industrial customers. Estimated weather impacts are based 
on actual current period weather compared to normal weather conditions. 
Normal weather conditions are defined as the long-term average of actual 
historical weather conditions. Heating degree days measure the variation in 
weather based on the extent the average daily temperature falls below a base 

temperature. Cooling degree days measure the variation in weather based on 
the extent the average daily temperature rises above the base temperature. 
Each degree of temperature below the base temperature counts as one heating 
degree day and each degree of temperature above the base temperature counts 
as one cooling degree day.

The estimated impact of weather on earnings for Electric Utilities and 

Infrastructure is based on the temperature variances from a normal condition 
and customers’ historic usage patterns. The methodology used to estimate the 
impact of weather does not consider all variables that may impact customer 
response to weather conditions, such as humidity in the summer or wind chill 
in the winter. The precision of this estimate may also be impacted by applying 
long-term weather trends to shorter-term periods.

191

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Gas Utilities and Infrastructure’s costs and revenues are influenced by 
seasonal patterns due to peak natural gas sales occurring during the winter 
months as a result of space heating requirements. Residential customers are 
the most impacted by weather. There are certain regulatory mechanisms for the 
North Carolina, South Carolina, Tennessee, Ohio and Kentucky service territories 
that normalize the margins collected from certain customer classes during the 
winter. In North Carolina, rate design provides protection from both weather and 
other usage variations such as conservation, while South Carolina, Tennessee 
and Kentucky revenues are adjusted solely based on weather. Ohio primarily 
employs a fixed charge each month regardless of the season and usage.

UNBILLED REVENUE

Unbilled revenues are recognized by applying customer billing rates to the 
estimated volumes of energy or natural gas delivered but not yet billed. Unbilled 
revenues can vary significantly from period to period as a result of seasonality, 
weather, customer usage patterns, customer mix, average price in effect 
for customer classes, timing of rendering customer bills and meter reading 
schedules, and the impact of weather normalization or margin decoupling 
mechanisms.

Unbilled revenues are included within Receivables and Receivables of VIEs on the Consolidated Balance Sheets as shown in the following table.

(in millions)

Duke Energy
Duke Energy Carolinas
Progress Energy
Duke Energy Progress
Duke Energy Florida
Duke Energy Ohio
Duke Energy Indiana
Piedmont

December 31,

2020

$ 969
328 
283 
167 
116 
2 
16 
86 

$

2019

843
298 
217 
122 
95 
1 
16 
78 

Additionally, Duke Energy Ohio and Duke Energy Indiana sell, on a revolving basis, nearly all of their retail accounts receivable, including receivables for unbilled 

revenues, to an affiliate, CRC and account for the transfers of receivables as sales. Accordingly, the receivables sold are not reflected on the Consolidated Balance 
Sheets of Duke Energy Ohio and Duke Energy Indiana. See Note 17 for further information. These receivables for unbilled revenues are shown in the table below.

(in millions)

Duke Energy Ohio
Duke Energy Indiana

19. STOCKHOLDERS’ EQUITY

December 31,

$

2020

87 
134 

$

2019

82 
115 

Basic EPS is computed by dividing net income available to Duke Energy 
common stockholders, as adjusted for distributed and undistributed earnings 
allocated to participating securities and accumulated preferred dividends, by 
the weighted average number of common shares outstanding during the period. 
Diluted EPS is computed by dividing net income available to Duke Energy 
common stockholders, as adjusted for distributed and undistributed earnings 
allocated to participating securities and accumulated preferred dividends, by 
the diluted weighted average number of common shares outstanding during the 
period. Diluted EPS reflects the potential dilution that could occur if securities 

or other agreements to issue common stock, such as equity forward sale 
agreements, were exercised or settled. Duke Energy’s participating securities 
are RSUs that are entitled to dividends declared on Duke Energy common stock 
during the RSUs vesting periods. Dividends declared on preferred stock are 
recorded on the Consolidated Statements of Operations as a reduction of net 
income to arrive at net income available to Duke Energy common stockholders. 
Dividends accumulated on preferred stock are an adjustment to net income 
used in the calculation of basic and diluted EPS.

192

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and 

preferred share dividends declared.

(in millions, except per share amounts)

Net Income available to Duke Energy common stockholders
Less: Income (Loss) from discontinued operations
Accumulated preferred stock dividends adjustment
Less: Impact of participating securities
Income from continuing operations available to Duke Energy common stockholders
Weighted average common shares outstanding – basic
Equity forwards
Weighted average common shares outstanding – diluted
EPS from continuing operations available to Duke Energy common stockholders

Basic and Diluted

Potentially dilutive items excluded from the calculation(a)
Dividends declared per common share
Dividends declared on Series A preferred stock per depositary share
Dividends declared on Series B preferred stock per share

Years Ended December 31,

2020

$ 1,270 
7 
1 
2 
$ 1,262 
737 
1 
738 

$

1.71 
2 
$
3.82 
$ 1.437 
$ 49.292 

2019

$3,707 
(7)
(15)
5 
$3,694 
729 
— 
729 

$ 5.07 
2 
$ 3.75 
$ 1.03 
$ — 

2018

$ 2,666 
19 
— 
5 
$ 2,642 
708 
— 
708 

$ 3.73 
2 
$ 3.64 
$ — 
$ — 

(a)  Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.

Common Stock

In November 2019, Duke Energy filed a prospectus supplement and 
executed an Equity Distribution Agreement (EDA) under which it may sell up to 
$1.5 billion of its common stock through a new ATM offering program, including 
an equity forward sales component. Under the terms of the EDA, Duke Energy 
may issue and sell shares of common stock through September 2022.

Separately, in November 2019, Duke Energy marketed an equity offering 
of 28.75 million shares of common stock through an Underwriting Agreement. 
In connection with the offering, Duke Energy entered into equity forward sales 
agreements with an initial forward price of $85.99 per share. In March 2020, 
Duke Energy marketed approximately 940,000 shares of common stock through 
an equity forward transaction under the ATM with an initial forward price of 
$89.76 per share. In May 2020, Duke Energy marketed approximately 903,000 
shares of common stock through an equity forward transaction under the ATM 
with an initial forward price of $82.44 per share. In August 2020, Duke Energy 
marketed approximately 936,000 shares of common stock through an equity 
forward transaction under the ATM with an initial forward price of $79.52 
per share. 

In December 2020, Duke Energy physically settled the equity forwards by 
delivering 32 million shares of common stock in exchange for net cash proceeds 
of approximately $2.6 billion.

Preferred Stock

On March 29, 2019, Duke Energy completed the issuance of 40 million 

depositary shares, each representing 1/1,000th share of its Series A Cumulative 
Redeemable Perpetual Preferred Stock, at a price of $25 per depositary share. 
The transaction resulted in net proceeds of $973 million after issuance costs with 
proceeds used for general corporate purposes and to reduce short-term debt. 
The preferred stock has a $25 liquidation preference per depositary share and 
earns dividends on a cumulative basis at a rate of 5.75% per annum. Dividends 
are payable quarterly in arrears on the 16th day of March, June, September and 
December, and began on June 16, 2019.

The Series A Preferred Stock has no maturity or mandatory redemption 
date, is not redeemable at the option of the holders and includes separate call 
options. The first call option allows Duke Energy to call the Series A Preferred 
Stock at a redemption price of $25.50 per depositary share prior to June 15, 
2024, in whole but not in part, at any time within 120 days after a ratings event 
where a rating agency amends, clarifies or changes the criteria it uses to assign 
equity credit for securities such as the preferred stock. The second call option 
allows Duke Energy to call the preferred stock, in whole or in part, at any time, on 
or after June 15, 2024, at a redemption price of $25 per depositary share. Duke 
Energy is also required to redeem all accumulated and unpaid dividends if either 
call option is exercised.

On September 12, 2019, Duke Energy completed the issuance of 1 million 

shares of its Series B Fixed-Rate Reset Cumulative Redeemable Perpetual 
Preferred Stock, at a price of $1,000 per share. The transaction resulted in 
net proceeds of $989 million after issuance costs with proceeds being used 
to pay down short-term debt, repay at maturity $500 million senior notes due 
September 2019, and for general corporate purposes. The preferred stock 
has a $1,000 liquidation preference per share and earns dividends on a 
cumulative basis at an initial rate of 4.875% per annum. Dividends are payable 
semiannually in arrears on the 16th day of March and September, and began 
on March 16, 2020. On September 16, 2024, the First Call Date, and any fifth 
anniversary of the First Call Date (each a Reset Date), the dividend rate will reset 
based on the then current five-year U.S. Treasury rate plus a spread of 3.388%. 

The Series B Preferred Stock has no maturity or mandatory redemption 
date, is not redeemable at the option of the holders and includes separate call 
options. The first call option allows Duke Energy to call the Series B Preferred 
Stock at a redemption price of $1,020 per share, in whole but not in part, at any 
time within 120 days after a ratings event. The second call option allows Duke 
Energy to call the preferred stock, in whole or in part, on the First Call Date or any 
subsequent Reset Date at a redemption price in cash equal to $1,000 per share. 
Duke Energy is also required to redeem all accumulated and unpaid dividends if 
either call option is exercised.

Dividends issued on its Series A and Series B Preferred Stock are subject 

to approval by the Board of Directors. However, the deferral of dividend payments 
on the preferred stock prohibits the declaration of common stock dividends.

193

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The Series A and Series B Preferred Stock rank, with respect to dividends 

and distributions upon liquidation or dissolution:

liabilities with respect to assets available to satisfy claims against Duke 
Energy; and

• senior to Common Stock and to each other class or series of capital 

stock established after the original issue date of the Series A and Series 
B Preferred Stock that is expressly made subordinated to the Series A 
and Series B Preferred Stock;

• on a parity with any class or series of capital stock established after the 
original issue date of the Series A and Series B Preferred Stock that is 
not expressly made senior or subordinated to the Series A or Series B 
Preferred Stock;

• junior to any class or series of capital stock established after the 

original issue date of the Series A and Series B Preferred Stock that is 
expressly made senior to the Series A or Series B Preferred Stock;

• junior to all existing and future indebtedness (including indebtedness 
outstanding under Duke Energy’s credit facilities, unsecured senior 
notes, junior subordinated debentures and commercial paper) and other 

• structurally subordinated to existing and future indebtedness and other 
liabilities of Duke Energy’s subsidiaries and future preferred stock of 
subsidiaries.

Holders of Series A and Series B Preferred Stock have no voting rights with 
respect to matters that generally require the approval of voting stockholders. The 
limited voting rights of holders of Series A and Series B Preferred Stock include 
the right to vote as a single class, respectively, on certain matters that may affect 
the preference or special rights of the preferred stock, except in the instance that 
Duke Energy elects to defer the payment of dividends for a total of six quarterly 
full dividend periods for Series A Preferred Stock or three semiannual full dividend 
periods for Series B Preferred Stock. If dividends are deferred for a cumulative 
total of six quarterly full dividend periods for Series A Preferred Stock or three 
semiannual full dividend periods for Series B Preferred Stock, whether or not for 
consecutive dividend periods, holders of the respective preferred stock have the 
right to elect two additional Board members to the Board of Directors.

20.  SEVERANCE

During 2020, as a result of partial settlements between Duke Energy 

Carolinas, Duke Energy Progress and the Public Staff, Duke Energy Carolinas 
and Duke Energy Progress deferred as Regulatory assets on the Consolidated 
Balance Sheets, approximately $65 million and $33 million, respectively, 
of previously recorded severance charges within Operation, maintenance 
and other on the Consolidated Statements of Operations. These severance 
charges were previously recorded during 2018, as Duke Energy reviewed its 
operations and identified opportunities for improvement to better serve its 
customers. This operational review included the company’s workforce strategy 
and staffing levels to ensure the company was staffed with the right skill sets 

and number of teammates to execute the long-term vision for Duke Energy. As 
such, Duke Energy extended voluntary and involuntary severance benefits to 
certain employees in specific areas as a part of workforce planning and digital 
transformation efforts. See Note 3 for more information.

The following table presents the direct and allocated severance and 

related charges accrued for approximately 30 employees in 2020, 140 
employees in 2019, and 1,900 employees in 2018, by the Duke Energy 
Registrants within Operation, maintenance and other on the Consolidated 
Statements of Operations.

(in millions)

Year Ended December 31, 2020(a)(b)

Year Ended December 31, 2019

Year Ended December 31, 2018

Duke 
Energy 
Carolinas

Duke 
Energy

Progress 
Energy

Duke 
Energy 
Progress

Duke 
Energy 
Florida

Duke 
Energy 
Ohio

Duke 
Energy 
Indiana

$ (85)

$ (58)

$ (28)

$ (31)

$ 3

$ —

$ —

16

187

8

102

6

69

3
52

3

17

—

6

1

7

Piedmont

$ —

1

2

(a) 
(b) 

Includes unamortized deferred severance charges of approximately $(86) million, $(57) million, $(29) million and $(29) million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
Includes adjustments associated with 2018 severance charges of approximately $(6) million, $(2) million, $(3) million and $(2) million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, 
respectively.

The table below presents the severance liability for past and ongoing severance plans including the plans described above.

(in millions)

Balance at December 31, 2019

Provision/Adjustments

Cash Reductions

Balance at December 31, 2020

Duke 
Energy 
Carolinas

Duke 
Energy

Progress 
Energy

Duke 
Energy 
Progress

Duke 
Energy 
Florida

Duke 
Energy 
Ohio

Duke 
Energy 
Indiana

$ 41

1

(31)

$ 11

$ 11

—

(9)

$ 2

$ 13

—

(10)

$ 3

$ 6

(2)

(3)

$ 1

$ 7

2

(7)

$ 2

$ 1

(1)

—

$—

$ 2

—

(1)

$ 1

Piedmont

$ —

—

—

$ —

194

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)21.  STOCK-BASED COMPENSATION

The Duke Energy Corporation 2015 Long-Term Incentive Plan (the 2015 

The total grant date fair value of shares vested during the years ended 

Plan) provides for the grant of stock-based compensation awards to employees 
and outside directors. The 2015 Plan reserves 10 million shares of common stock 
for issuance. Duke Energy has historically issued new shares upon exercising or 
vesting of share-based awards. However, Duke Energy may use a combination of 
new share issuances and open market repurchases for share-based awards that 
are exercised or vest in the future. Duke Energy has not determined with certainty 
the amount of such new share issuances or open market repurchases.

The following table summarizes the total expense recognized by the Duke 

Energy Registrants, net of tax, for stock-based compensation.

(in millions)
Duke Energy
Duke Energy Carolinas
Progress Energy
Duke Energy Progress
Duke Energy Florida
Duke Energy Ohio
Duke Energy Indiana
Piedmont

Years Ended December 31,

2020
$ 61
22
23
15
9
4
6
3

2019
$ 65
24
24
15
9
5
6
3

$

2018
56
20
21
13
8
4
5
3

Duke Energy’s pretax stock-based compensation costs, the tax benefit 

associated with stock-based compensation expense and stock-based 
compensation costs capitalized are included in the following table.

(in millions)

Years Ended December 31,

2020

2019

2018

RSU awards
Performance awards
Pretax stock-based compensation cost
Stock-based compensation costs capitalized
Stock-based compensation expense
Tax benefit associated with stock-based compensation expense

$46
38
$84
5
$79
$18

$ 44
45
$ 89
5
$ 84
$ 19

$ 43
35
$ 78
5
$ 73
$ 17

RESTRICTED STOCK UNIT AWARDS

RSU awards generally vest over periods from immediate to three years. Fair 
value amounts are based on the market price of Duke Energy’s common stock on 
the grant date. The following table includes information related to RSU awards.

Shares granted (in thousands) 
Fair value (in millions)

Years Ended December 31,

2020

498
$ 50

2019

571
$ 51

2018

649
$ 49

The following table summarizes information about RSU awards outstanding.

Shares 
(in thousands)

Weighted Average  
Grant Date Fair Value  
(per share)

Outstanding at December 31, 2019
Granted
Vested
Forfeited
Outstanding at December 31, 2020
RSU awards expected to vest

1,010
498
(532)
(37)
939
898

$

83
100
82
92
93
93

195

December 31, 2020, 2019 and 2018, was $43 million, $49 million and 
$43 million, respectively. At December 31, 2020, Duke Energy had $31 million 
of unrecognized compensation cost, which is expected to be recognized over a 
weighted average period of 23 months.

PERFORMANCE AWARDS

Stock-based performance awards generally vest after three years if 
performance targets are met. The actual number of shares issued will range from 
zero to 200% of target shares, depending on the level of performance achieved. 
Performance awards contain performance conditions and a market 
condition. The performance conditions are based on Duke Energy’s cumulative 
adjusted EPS and total incident case rate (total incident case rate is one of our 
key employee safety metrics). The market condition is based on TSR of Duke 
Energy relative to a predefined peer group. 

Relative TSR is valued using a path-dependent model that incorporates 

expected relative TSR into the fair value determination of Duke Energy’s 
performance-based share awards. The model uses three-year historical volatilities 
and correlations for all companies in the predefined peer group, including Duke 
Energy, to simulate Duke Energy’s relative TSR as of the end of the performance 
period. For each simulation, Duke Energy’s relative TSR associated with the 
simulated stock price at the end of the performance period plus expected 
dividends within the period results in a value per share for the award portfolio. The 
average of these simulations is the expected portfolio value per share. Actual life 
to date results of Duke Energy’s relative TSR for each grant are incorporated within 
the model. For performance awards granted in 2020, the model used a risk-free 
interest rate of 1.4%, which reflects the yield on three-year Treasury bonds as 
of the grant date, and an expected volatility of 13.6% based on Duke Energy’s 
historical volatility over three years using daily stock prices. 

The following table includes information related to stock-based 

performance awards.

Shares granted assuming target performance (in thousands)

Fair value (in millions)

Years Ended December 31,

2020

319

$ 34

2019

2018

320

372

$ 27

$ 27

The following table summarizes information about stock-based 
performance awards outstanding and assumes payout at the target level.

Shares 
(in thousands)

Weighted Average 
Grant Date Fair Value  
(per share)

Outstanding at December 31, 2019
Granted
Vested
Forfeited
Outstanding at December 31, 2020
Stock-based performance awards expected to vest

1,109
319
(448)
(18)
962
937

$

80
105
81
88
87
87

The total grant date fair value of shares vested during the years ended 
December 31, 2020, and 2019, was $36 million and $23 million, respectively. At 
December 31, 2020, Duke Energy had $23 million of unrecognized compensation cost, 
which is expected to be recognized over a weighted average period of 21 months.

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
22.  EMPLOYEE BENEFIT PLANS 

DEFINED BENEFIT RETIREMENT PLANS

Duke Energy and certain subsidiaries maintain, and the Subsidiary 
Registrants participate in, qualified, non-contributory defined benefit retirement 
plans. The Duke Energy plans cover most employees using a cash balance 
formula. Under a cash balance formula, a plan participant accumulates a 
retirement benefit consisting of pay credits based upon a percentage of current 
eligible earnings, age or age and years of service and interest credits. Certain 
employees are eligible for benefits that use a final average earnings formula. 
Under these final average earnings formulas, a plan participant accumulates  
a retirement benefit equal to the sum of percentages of their (i) highest three-year, 
four-year, or five-year average earnings, (ii) highest three-year, four-year, or 
five-year average earnings in excess of covered compensation per year of 
participation (maximum of 35 years) or (iii) highest three-year average earnings 
times years of participation in excess of 35 years. Duke Energy also maintains, 
and the Subsidiary Registrants participate in, non-qualified, non-contributory 
defined benefit retirement plans that cover certain executives. The qualified 
and non-qualified, non-contributory defined benefit plans are closed to new 
participants. 

Duke Energy uses a December 31 measurement date for its defined 
benefit retirement plan assets and obligations. Actuarial gains experienced 
by the defined benefit retirement plans in remeasuring plan assets as of 
December 31, 2020, and 2019, were attributable to actual investment 
performance that exceeded expected investment performance. Actuarial 
losses experienced by the defined benefit retirement plans in remeasuring plan 
obligations as of December 31, 2020, and 2019, were primarily attributable to 
the decrease in the discount rate used to measure plan obligations.

As a result of the application of settlement accounting due to total lump-sum 

benefit payments exceeding the settlement threshold (defined as the sum of 
the service cost and interest cost on projected benefit obligation components of 
net periodic pension costs) for one of its qualified pension plans, Duke Energy 
recognized settlement charges of $94 million, primarily as a regulatory asset 
within Other Noncurrent Assets on the Consolidated Balance Sheets as of 
December 31, 2019 (an immaterial amount was recorded in Other income and 
expenses, net within the Consolidated Statement of Operations).

Settlement charges recognized by the Subsidiary Registrants as of 
December 31, 2019, which represent amounts allocated by Duke Energy 
for employees of the Subsidiary Registrants and allocated charges for their 

proportionate share of settlement charges for employees of Duke Energy’s 
shared services affiliate, were $53 million for Duke Energy Carolinas, 
$26 million for Progress Energy, $20 million for Duke Energy Progress, $6 million 
for Duke Energy Florida, $4 million for Duke Energy Indiana, $2 million for 
Duke Energy Ohio and $8 million for Piedmont. 

The settlement charges reflect the recognition of a pro-rata portion of 
previously unrecognized actuarial losses, equal to the percentage of reduction in 
the projected benefit obligation resulting from total lump-sum benefit payments 
as of December 31, 2019. Settlement charges recognized as a regulatory 
asset within Other Noncurrent Assets on the Consolidated Balance Sheets are 
amortized over the average remaining service period for participants in the 
plan. Amortization of settlement charges is disclosed in the tables below as a 
component of net periodic pension costs.

Net periodic benefit costs disclosed in the tables below represent the cost 
of the respective benefit plan for the periods presented prior to capitalization of 
amounts reflected as Net property, plant and equipment, on the Consolidated 
Balance Sheets. Only the service cost component of net periodic benefit 
costs is eligible to be capitalized. The remaining non-capitalized portions of 
net periodic benefit costs are classified as either: (1) service cost, which is 
recorded in Operations, maintenance and other on the Consolidated Statements 
of Operations; or as (2) components of non-service cost, which is recorded in 
Other income and expenses, net, on the Consolidated Statements of Operations. 
Amounts presented in the tables below for the Subsidiary Registrants represent 
the amounts of pension and other post-retirement benefit cost allocated by 
Duke Energy for employees of the Subsidiary Registrants. Additionally, the 
Consolidated Statements of Operations of the Subsidiary Registrants also 
include allocated net periodic benefit costs for their proportionate share of 
pension and post-retirement benefit cost for employees of Duke Energy’s 
shared services affiliate that provide support to the Subsidiary Registrants. 
However, in the tables below, these amounts are only presented within the Duke 
Energy column (except for amortization of settlement charges). These allocated 
amounts are included in the governance and shared service costs discussed in 
Note 13.

Duke Energy’s policy is to fund amounts on an actuarial basis to provide 
assets sufficient to meet benefit payments to be paid to plan participants. Duke 
Energy does not anticipate making any contributions in 2021. The following table 
includes information related to the Duke Energy Registrants’ contributions to its 
qualified defined benefit pension plans.

(in millions) 

Contributions Made:
2020
2019
2018

Duke  
Energy

Duke Energy 
Carolinas

Progress  
Energy

Duke Energy 
Progress

Duke Energy 
Florida

Duke Energy 
Ohio

$ —
77
141

$—
7
46

$ —
57
45

$—
4
25

$ —
53
20

$—
2
—

Duke  
Energy 
Indiana

$—
2
8

Piedmont

$—
1
—

196

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)QUALIFIED PENSION PLANS

Components of Net Periodic Pension Costs

(in millions)

Service cost
Interest cost on projected benefit obligation
Expected return on plan assets
Amortization of actuarial loss
Amortization of prior service credit
Amortization of settlement charges
Net periodic pension costs(a)(b)

(in millions)

Service cost
Interest cost on projected benefit obligation
Expected return on plan assets
Amortization of actuarial loss
Amortization of prior service credit
Amortization of settlement charges
Net periodic pension costs(a)(b)

$

$

$

$

Year Ended December 31, 2020

Duke  
Energy

Duke Energy 
Carolinas

Progress 
Energy

Duke Energy 
Progress

Duke Energy 
Florida

Duke Energy 
Ohio

165
269
(572)
128
(32)
18
(24)

$

$

51
62
(145)
28
(8)
9
(3)

$

$

48
85
(190)
41
(3)
7
(12)

$

27
38
(87)
18
(2)
6
$ —

$

$

21
46
(101)
23
(1)
1
(11)

$

$

5
15
(28)
6
—
—
(2)

Duke  
Energy 
Indiana

$

9
22
(42)
12
(2)
1
$ —

Piedmont

$

$

6
9
(21)
9
(9)
1
(5)

Year Ended December 31, 2019

Duke  
Energy

Duke Energy 
Carolinas

Progress 
Energy

Duke Energy 
Progress

Duke Energy 
Florida

Duke Energy 
Ohio

Duke Energy 
Indiana

Piedmont

158
317
(567)
108
(32)
6
(10)

$

$

49
75
(147)
24
(8)
2
(5)

$

$

46
100
(178)
39
(3)
1
5

$

$

26
45
(88)
15
(2)
1
(3)

$

$

20
54
(89)
24
(1)
—
8

$

4
18
(28)
4
—
2
$ —

$

$

9
26
(43)
8
(2)
—
(2)

$

$

5
10
(22)
8
(9)
—
(8)

Year Ended December 31, 2018

(in millions)

Service cost
Interest cost on projected benefit obligation
Expected return on plan assets
Amortization of actuarial loss
Amortization of prior service credit
Net periodic pension costs(a)(b)

Duke  
Energy

Duke Energy 
Carolinas

Progress 
Energy

Duke Energy 
Progress

Duke Energy 
Florida

Duke Energy 
Ohio

Duke Energy 
Indiana

Piedmont

$

$

182
299
(559)
132
(32)
22

$

$

58
72
(147)
29
(8)
4

$

$

51
94
(178)
44
(3)
8

$

$

29
43
(85)
21
(2)
6

$

$

22
50
(91)
23
(1)
3

$

$

5
17
(28)
5
—
(1)

$ 11
23
(42)
10
(2)
$ —

$

7
11
(22)
11
(10)
$ (3)

(a)  Duke Energy amounts exclude $4 million, $4 million and $5 million for the years ended December 2020, 2019 and 2018, respectively, of regulatory asset amortization resulting from purchase accounting adjustments 

associated with Duke Energy’s merger with Cinergy in April 2006.

(b)  Duke Energy Ohio amounts exclude $2 million, $2 million and $2 million for the years ended December 2020, 2019 and 2018, respectively, of regulatory asset amortization resulting from purchase accounting adjustments 

associated with Duke Energy’s merger with Cinergy in April 2006.

197

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets

(in millions)

Regulatory assets, net increase (decrease)
Accumulated other comprehensive loss (income)
Deferred income tax expense (benefit)
Amortization of prior year service credit
Amortization of prior year actuarial losses
Net amount recognized in accumulated other 
comprehensive income

(in millions)

Regulatory assets, net (decrease) increase
Accumulated other comprehensive (income) loss
Deferred income tax expense (benefit)
Amortization of prior year service credit
Amortization of prior year actuarial losses
Net amount recognized in accumulated other 
comprehensive income

Duke  
Energy

Duke Energy 
Carolinas

Progress 
Energy

Duke Energy 
Progress

Duke Energy 
Florida

Duke Energy 
Ohio

Duke Energy 
Indiana

Piedmont

Year Ended December 31, 2020

$ (62)

$ (39)

$ (26)

$ (30)

$

2
1
(11)

$ —
—
—

$

1
—
(1)

$

(8)

$ —

$ —

$ —
—
—

$ —

$

$

4

1
—
(3)

$ —
—
—

$ (2)

$ —

$ —
—
—

$ —

$ —
—
—

$ —

$

(2)

$

5

$ (1)

Year Ended December 31, 2019

Duke  
Energy

Duke Energy 
Carolinas

Progress 
Energy

Duke Energy 
Progress

Duke Energy 
Florida

Duke Energy 
Ohio

Duke Energy 
Indiana

Piedmont

$ (212)

$ (156)

$ (79)

$ (59)

$ (20)

$

20
1
(15)

$ —
—
—

$

1
—
(2)

$

6

$ —

$

(1)

$ —
—
—

$ —

$

(1)
—
3

$

2

$ 12

$ —
—
—

$ —

$ 22

$ —
—
—

$ —

$ —

$ —
—
—

$ —

Reconciliation of Funded Status to Net Amount Recognized

(in millions)

Change in Projected Benefit Obligation
Obligation at prior measurement date 
Service cost
Interest cost
Actuarial loss
Transfers
Benefits paid
Benefits paid – settlements
Obligation at measurement date
Accumulated Benefit Obligation at measurement date
Change in Fair Value of Plan Assets
Plan assets at prior measurement date
Actual return on plan assets
Benefits paid
Benefits paid – settlements
Transfers
Plan assets at measurement date
Funded status of plan

Year Ended December 31, 2020

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$ 1,923
49
62
83
8
(137)
—
$ 1,988
$ 1,989

$ 2,263
247
(137)
—
8
$ 2,381
393
$

$ 2,608
46
85
144
(8)
(160)
—
$ 2,715
$ 2,684

$ 2,898
319
(160)
—
(8)
$ 3,049
334
$

$ 1,170
26
38
50
(8)
(83)
—
$ 1,193
$ 1,194

$ 1,364
149
(83)
—
(8)
$ 1,422
229
$

$ 1,424
20
46
93
—
(76)
—
$ 1,507
$ 1,476

$ 1,515
166
(76)
—
—
$ 1,605
98
$

$ 481
4
15
21
15
(34)
—
$ 502
$ 493

$ 443
48
(34)
—
15
$ 472
$ (30)

$ 693
8
22
46
—
(49)
(5)
$ 715
$ 709

$ 667
71
(49)
(5)
—
$ 684
$ (31)

$ 292
5
9
14
—
(27)
—
$ 293
$ 294

$ 335
35
(27)
—
—
$ 343
50
$

Duke  
Energy

$ 8,321
157
269
433
—
(541)
(5)
$ 8,634
$ 8,577

$ 8,910
973
(541)
(5)
—
$ 9,337
703
$

198

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)(in millions)
Change in Projected Benefit Obligation
Obligation at prior measurement date 
Service cost
Interest cost
Actuarial loss
Transfers
Benefits paid
Obligation at measurement date

Accumulated Benefit Obligation at 
measurement date
Change in Fair Value of Plan Assets
Plan assets at prior measurement date
Employer contributions
Actual return on plan assets
Benefits paid
Transfers
Plan assets at measurement date

Funded status of plan

Year Ended December 31, 2019

Duke  
Energy

Duke  
Energy 
Carolinas

7,869
150
317
716
—
(731)
8,321

$ 1,954
47
75
101
11
(265)
$ 1,923

Progress 
Energy

$ 2,433
43
100
223
—
(191)
$ 2,608

Duke  
Energy 
Progress

$ 1,125
25
45
87
—
(112)
$ 1,170

Duke  
Energy 
Florida

$ 1,295
18
54
135
—
(78)
$ 1,424

8,262

$ 1,923

$ 2,578

$ 1,170

$ 1,392

8,233
77
1,331
(731)
—
8,910

589

$ 2,168
7
342
(265)
11
$ 2,263

$

340

$ 2,606
57
426
(191)
—
$ 2,898

$

290

$ 1,268
4
204
(112)
—
$ 1,364

$

194

$ 1,322
53
218
(78)
—
$ 1,515

$

91

$

$

$

$

$

$

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$

$

$

$

$

$

435
4
18
54
—
(30)
481

471

405
2
66
(30)
—
443

(38)

$ 618
8
26
87
—
(46)
$ 693

$ 264
5
10
33
—
(20)
$ 292

$ 686

$ 292

$ 611
2
100
(46)
—
$ 667

$

(26)

$ 305
1
49
(20)
—
$ 335

$

43

Amounts Recognized in the Consolidated Balance Sheets

(in millions)

Prefunded pension(a)
Noncurrent pension liability(b)
Net asset (liability) recognized
Regulatory assets
Accumulated other comprehensive (income) loss
Deferred income tax benefit
Prior service credit
Net actuarial loss
Net amounts recognized in accumulated other comprehensive loss

Duke  
Energy 
Carolinas

Progress 
Energy

December 31, 2020

Duke  
Energy 
Progress

Duke  
Energy 
Florida

$ 393
$ —
$ 393
$ 381

$ —
—
—
$ —

$ 379
$ 45
$ 334
$ 691

$ —
—
2
2

$

$ 229
$ —
$ 229
$ 283

$ —
—
—
$ —

$ 143
$ 45
$ 98
$ 408

$ —
—
—
$ —

Duke  
Energy

780
$
77
$
$
703
$ 1,910

$

$

(21)
(2)
100
77

Duke  
Energy  
Ohio

$ 58
$ 88
$ (30)
$ 110

$ —
—
—
$ —

Duke  
Energy 
Indiana

79
$
$ 110
$ (31)
$ 209

$ —
—
—
$ —

Piedmont

$ 50
$ —
$ 50
$ 80

$ —
—
—
$ —

199

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)(in millions)

Prefunded pension(a)
Noncurrent pension liability(b)
Net asset recognized
Regulatory assets
Accumulated other comprehensive (income) loss
Deferred income tax benefit
Prior service credit
Net actuarial loss
Net amounts recognized in accumulated other comprehensive loss
Amounts to be recognized in net periodic pension costs  
in the next year
Unrecognized net actuarial loss
Unrecognized prior service credit

Duke  
Energy

621
$
32
$
$
589
$ 1,972

$

$

$

(23 )
(3)
111
85

135
(32)

Duke  
Energy 
Carolinas

Progress 
Energy

December 31, 2019

Duke  
Energy 
Progress

Duke  
Energy 
Florida

$ 340
$ —
$ 340
$ 420

$ —
—
—
$ —

$ 322
$ 32
$ 290
$ 717

$

$

(1 )
—
3
2

$ 194
$ —
$ 194
$ 313

$ —
—
—
$ —

$ 123
$ 32
$ 91
$ 404

$

$

(1 )
—
3
2

Duke  
Energy  
Ohio

$ 38
$ 76
$ (38 )
$ 112

$ —
—
—
$ —

Duke  
Energy 
Indiana

57
$
$
83
$ (26 )
$ 204

$ —
—
—
$ —

Piedmont

$ 43
$ —
$ 43
$ 81

$ —
—
—
$ —

$

29
(8 )

$ 43
(3 )

$

19
(2 )

$ 24
(1 )

$

7
(1 )

$

10
(2 )

$

9
(9 )

(a) 
(b) 

Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets.
Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.

Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets

(in millions)

Projected benefit obligation
Accumulated benefit obligation
Fair value of plan assets

(in millions)

Projected benefit obligation

Accumulated benefit obligation
Fair value of plan assets

December 31, 2020

Duke  
Energy

Progress 
Energy

$ 4,914
4,856
4,837

$ 828
796
783

Duke  
Energy 
Florida

$ 828
796
783

Duke  
Energy  
Ohio

$ 184
176
96

Duke  
Energy 
Indiana

$ 293
285
183

December 31, 2019

Duke  
Energy  
Ohio

$ 155

146
79

Duke  
Energy  
Indiana

$ 260

252
177

Assumptions Used for Pension Benefits Accounting

The discount rate used to determine the current year pension obligation and following year’s pension expense is based on a bond selection-settlement portfolio 

approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate sufficient cash flow to provide for projected 
benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio 
is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value 
of the bonds selected.

The average remaining service period for participants in active plans and life expectancy of participants in inactive plans is 13 years for Duke Energy, Duke 
Energy Indiana and Duke Energy Ohio, 14 years for Progress Energy, Duke Energy Progress and Duke Energy Florida, 12 years for Duke Energy Carolinas and nine years 
for Piedmont. 

200

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The following tables present the assumptions or range of assumptions used for pension benefit accounting.

Benefit Obligations
Discount rate
Interest crediting rate
Salary increase 
Net Periodic Benefit Cost
Discount rate
Interest crediting rate
Salary increase
Expected long-term rate of return on plan assets

Expected Benefit Payments

(in millions)

Years ending December 31,

2021

2022

2023

2024

2025
2025-2029

NON-QUALIFIED PENSION PLANS

2020

2.60%
4.00%
3.50% – 4.00%

3.30%
4.00%
3.50% – 4.00%
6.85%

December 31,

2019

3.30%
4.00%
3.50% – 4.00%

4.30%
4.00%
3.50% – 4.00%
6.85%

2018

4.30%
4.00%
3.50 % – 4.00%

3.60%
4.00%
3.50 % – 4.00%
6.50%

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$ 667

$ 169

$ 177

$

650

655

644

617
2,745

170

174

168

163
677

176

181

184

181
846

94

92

95

96

93
399

$ 82

$ 40

$ 53

$ 29

83

85

87

88
443

39

38

37

35
154

51

49

49

47
217

25

22

21

19
83

The accumulated benefit obligation, which equals the projected benefit obligation for non-qualified pension plans, was $320 million for Duke Energy, $13 million 

for Duke Energy Carolinas, $111 million for Progress Energy, $33 million for Duke Energy Progress, $45 million for Duke Energy Florida, $4 million for Duke Energy 
Ohio, $2 million for Duke Energy Indiana and $4 million for Piedmont as of December 31, 2020. 

Employer contributions, which equal benefits paid for non-qualified pension plans, were $23 million for Duke Energy, $2 million for Duke Energy Carolinas, 

$8 million for Progress Energy, $3 million for Duke Energy Progress and $3 million for Duke Energy Florida for the year ended December 31, 2020. Employer 
contributions were not material for Duke Energy Ohio, Duke Energy Indiana or Piedmont for the year ended December 31, 2020.

Net periodic pension costs for non-qualified pension plans were not material for the years ended December 31, 2020, 2019 or 2018. 

OTHER POST-RETIREMENT BENEFIT PLANS

Duke Energy provides, and the Subsidiary Registrants participate in, some health care and life insurance benefits for retired employees on a contributory and 

non-contributory basis. Employees are eligible for these benefits if they have met age and service requirements at retirement, as defined in the plans. The health care 
benefits include medical, dental and prescription drug coverage and are subject to certain limitations, such as deductibles and copayments. 

Duke Energy did not make any pre-funding contributions to its other post-retirement benefit plans during the years ended December 31, 2020, 2019 or 2018.

201

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Components of Net Periodic Other Post-Retirement Benefit Costs

(in millions)

Service cost
Interest cost on accumulated post-retirement benefit 
obligation
Expected return on plan assets
Amortization of actuarial loss
Amortization of prior service credit
Net periodic post-retirement benefit costs (a)(b)

(in millions)

Service cost
Interest cost on accumulated post-retirement benefit 
obligation
Expected return on plan assets
Amortization of actuarial loss
Amortization of prior service credit
Net periodic post-retirement benefit costs(a)(b)

(in millions)

Service cost
Interest cost on accumulated post-retirement benefit 
obligation
Expected return on plan assets
Amortization of actuarial loss
Amortization of prior service credit
Net periodic post-retirement benefit costs(a)(b)

Year Ended December 31, 2020

Duke  
Energy 
Carolinas

Progress 
Energy

$

1

$

1

Duke  
Energy 
Progress

$ —

5
(8)
—
(4)
(6)

$

10
—
1
(3)
9

$

5
—
—
(1)
4

$

Duke  
Energy  
Florida

$ —

4
—
1
(2)
3

$

Year Ended December 31, 2019

Duke  
Energy 
Carolinas

Progress 
Energy

$

1

$

1

Duke  
Energy 
Progress

$ —

7
(7)
2
(5)
(2)

$

12
—
1
(8)
6

$

7
—
—
(1)
6

$

Duke  
Energy  
Florida

$

1

5
—
1
(7)
$ —

Year Ended December 31, 2018

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

$

1

$

1

$ —

7
(8)
3
(5)
(2)

$

12
—
1
(8)
6

$

6
—
1
(1)
6

$

Duke  
Energy  
Florida

$

1

6
—
—
(7)
$ —

Duke  
Energy

$

4

23
(13)
2
(14)
2

$

Duke  
Energy

$

4

30
(12)
4
(19)
7

$

Duke  
Energy

$

6

28
(13)
6
(19)
8

$

Duke  
Energy  
Ohio

$ —

1
—
—
(1)
$ —

Duke  
Energy  
Ohio

$ —

1
—
—
(1)
$ —

Duke  
Energy  
Ohio

$

1

1
—
—
(1)
1

$

Duke  
Energy 
Indiana

$

1

2
—
4
(1)
6

$

Duke  
Energy 
Indiana

$

1

3
—
4
(1)
7

$

Duke  
Energy 
Indiana

$

1

3
—
4
(1)
7

$

Piedmont

$ —

1
(2)
—
(2)
$ (3)

Piedmont

$ —

1
(1)
—
(2)
$ (2)

Piedmont

$

1

1
(2)
—
(2)
$ (2)

(a)  Duke Energy amounts exclude $6 million, $6 million and $7 million for the years ended December 2020, 2019 and 2018, respectively, of regulatory asset amortization resulting from purchase accounting adjustments 

associated with Duke Energy’s merger with Cinergy in April 2006.

(b)  Duke Energy Ohio amounts exclude $1 million, $2 million and $2 million for the years ended December 2020, 2019 and 2018, respectively, of regulatory asset amortization resulting from purchase accounting adjustments 

associated with Duke Energy’s merger with Cinergy in April 2006.

202

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities

(in millions)

Regulatory assets, net increase (decrease)
Regulatory liabilities, net increase (decrease)
Accumulated other comprehensive (income) loss
Deferred income tax benefit
Amortization of prior year service credit
Net amount recognized in accumulated other 
comprehensive income

(in millions)

Regulatory assets, net increase (decrease)
Regulatory liabilities, net increase (decrease)
Accumulated other comprehensive (income) loss
Deferred income tax benefit
Amortization of prior year actuarial gain
Net amount recognized in accumulated other 
comprehensive income

Year Ended December 31, 2020

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

$ —
(7)
$

$ —
—

$ —

$
9
$ —

$ —
—

$ —

$
6
$ —

$ —
—

$ —

$
3
$ —

$ —
—

$ —

Duke  
Energy

$
9
$ (10)

$ —
1

$

1

Year Ended December 31, 2019

Duke  
Energy

$ (127)
$ (152)

$ —
(4)

Duke  
Energy 
Carolinas

$ —
1
$

$ —
—

Progress 
Energy

$
$

(127)
(149)

$ —
—

Duke  
Energy 
Progress

$
$

(82)
(93)

$ —
—

Duke  
Energy 
Florida

$ (45)
$ (56)

$ —
—

$

(4)

$ —

$ —

$ —

$ —

Duke  
Energy  
Ohio

$ —
$ —

$ —
—

$ —

Duke  
Energy  
Ohio

$ —
(1)
$

$ —
—

$ —

Duke  
Energy 
Indiana

$
$

(4)
(1)

$ —
—

$ —

Duke  
Energy 
Indiana

$
$

(5)
(4)

$ —
—

$ —

Piedmont

$ —
$ —

$ —
—

$ —

Piedmont

$ —
3
$

$ —
—

$ —

203

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Reconciliation of Funded Status to Accrued Other Post-Retirement Benefit Costs

(in millions)

Change in Projected Benefit Obligation
Accumulated post-retirement benefit obligation  
at prior measurement date
Service cost
Interest cost
Plan participants’ contributions
Actuarial losses
Benefits paid
Accumulated post-retirement benefit  
obligation at measurement date
Change in Fair Value of Plan Assets
Plan assets at prior measurement date
Actual return on plan assets
Benefits paid
Employer contributions
Plan participants’ contributions
Plan assets at measurement date
Funded status of plan

(in millions)

Change in Projected Benefit Obligation
Accumulated post-retirement benefit obligation  
at prior measurement date
Service cost
Interest cost
Plan participants’ contributions
Actuarial losses
Benefits paid
Accumulated post-retirement benefit  
obligation at measurement date
Change in Fair Value of Plan Assets
Plan assets at prior measurement date
Actual return on plan assets
Benefits paid
Employer contributions
Plan participants’ contributions

Plan assets at measurement date

Funded status of plan

Year Ended December 31, 2020

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$ 723
4
23
15
19
(75)

$ 175
1
5
3
8
(18)

$ 303
1
10
5
8
(28)

$ 168
—
5
3
5
(15)

$

135
—
4
2
2
(13)

$ 29
—
1
1
—
(4)

$

64
1
2
2
1
(9)

$ 30
—
1
—
1
(2)

$ 709

$ 174

$ 299

$ 166

$

130

$ 27

$

61

$ 30

$ 220
24
(75)
53
15
$ 237
$ (472)

$ 130
14
(18)
10
3
$ 139
$ (35)

$

(1)
—
(28)
23
5
(1)
$
$ (300)

$

(1)
—
(15)
11
3
(2)
$
$ (168)

$ —
—
(13)
10
2
(1)
$
$ (131)

$

9
—
(4)
3
1
9
$
$ (18)

$

5
1
(9)
8
2
7
$
$ (54)

$ 34
4
(2)
1
—
$ 37
7
$

Year Ended December 31, 2019

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$

$

$

728
4
30
16
28
(83)

723

195
32
(83)
60
16

$

220

$ (503)

$

$

$

$

$

174
1
7
3
9
(19)

175

115
20
(19)
11
3

130

(45)

$

$

$

$

$

$

303
1
12
6
13
(32)

$

166
—
7
3
9
(17)

$

137
1
5
2
5
(15)

303

$

168

$

135

$

29
—
1
1
1
(3)

29

8
1
(3)
2
1

9

$

$

$

$

$

67
1
3
2
2
(11)

64

5
—
(11)
9
2

5

(59)

$

$

$

$

$

30
—
1
—
—
(1)

30

29
6
(1)
—
—

34

4

— $
—
(15)
13
2

— $

(135)

$

(20)

— $
(1)
(32)
26
6

(1)

(304)

$

$

— $
—
(17)
13
3

(1)

(169)

$

$

204

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Amounts Recognized in the Consolidated Balance Sheets

(in millions)

Prefunded post-retirement benefit
Current post-retirement liability(a)
Noncurrent post-retirement liability(b)
Net liability (asset) recognized
Regulatory assets
Regulatory liabilities
Accumulated other comprehensive (income) loss
Deferred income tax expense
Prior service credit
Net actuarial gain
Net amounts recognized in accumulated  
other comprehensive income

(in millions)

Current post-retirement liability(a)

Noncurrent post-retirement liability(b)
Total accrued post-retirement liability
Regulatory assets
Regulatory liabilities
Accumulated other comprehensive (income) loss
Deferred income tax expense
Prior service credit
Net actuarial gain
Net amounts recognized in accumulated  
other comprehensive income
Amounts to be recognized in net periodic pension 
expense in the next year
Unrecognized net actuarial loss
Unrecognized prior service credit

December 31, 2020

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

$

$
$
$

$

8
9
471
472
144
139

3
(1)
(13)

$ —
—
35
$
35
$ —
32
$

$ —
—
—

$ —
6
294
$ 300
$ 144
$ —

$ —
—
—

$ —
4
164
168
$
$
88
$ —

$ —
—
—

Duke  
Energy 
Florida

$ —
2
129
$ 131
$
56
$ —

$ —
—
—

Duke  
Energy  
Ohio

$

1
2
17
$
18
$ —
17
$

$ —
—
—

Duke  
Energy 
Indiana

$ —
—
54
54
32
62

$
$
$

$ —
—
—

Piedmont

$

7
—
—
$
(7)
$ —
3
$

$ —
—
—

$

(11)

$ —

$ —

$ —

$ —

$ —

$ —

$ —

December 31, 2019

Duke  
Energy

$

9

494
$ 503
$ 135
$ 149

$

3
(2)
(13)

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

$ —

45
$
45
$ —
39
$

$ —
—
—

$

5

299
$ 304
$ 135
$ —

$ —
—
—

$

3

163
166
$
82
$
$ —

$ —
—
—

Duke  
Energy 
Florida

$

2

133
$ 135
53
$
$ —

$ —
—
—

$

(12)

$ —

$ —

$ —

$ —

Duke  
Energy  
Ohio

$

1

19
$ 20
$ —
$ 17

$ —
—
—

$ —

Duke  
Energy 
Indiana

$ —

59
59
36
63

$
$
$

$ —
—
—

$ —

$

5
(14)

$

3
(4)

$

1
(3)

$ —
(1)

$

1
(2)

$ —
(1)

$ —
(1)

Piedmont

$ —

(4)
$
(4)
$ —
3
$

$ —
—
—

$ —

$ —
(2)

(a) 
(b) 

Included in Other within Current Liabilities on the Consolidated Balance Sheets.
Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.

Assumptions Used for Other Post-Retirement Benefits Accounting

The discount rate used to determine the current year other post-retirement benefits obligation and following year’s other post-retirement benefits expense is 
based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate 
sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated 
Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments 
discounted at this rate with the market value of the bonds selected. 

205

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)The average remaining service period of active covered employees is eight years for Duke Energy, seven years for Progress Energy, Duke Energy Florida and Duke 

Energy Ohio and six years for Duke Energy Carolinas, Duke Energy Progress, Duke Energy Indiana and Piedmont. 

The following tables present the assumptions used for other post-retirement benefits accounting.

Benefit Obligations
Discount rate
Net Periodic Benefit Cost
Discount rate
Expected long-term rate of return on plan assets
Assumed tax rate

Assumed Health Care Cost Trend Rate 

Health care cost trend rate assumed for next year
Rate to which the cost trend is assumed to decline (the ultimate trend rate)
Year that rate reaches ultimate trend

Expected Benefit Payments

December 31,

2020

2019

2018

2.60 %

3.30%

4.30%

3.30 %
6.85 %
23 %

4.30%
6.85%
23%

3.60%
6.50%
35%

December 31,

2020
6.25%
4.75%
2028

2019
6.00%
4.75%
2026

(in millions)

Years ending December 31,

2021

2022

2023

2024

2025
2026-2030

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$ 73

$ 17

$ 28

$ 15

$ 12

$ 3

$ 8

$ 2

66

62

58

54
223

16

15

14

13
54

26

25

24

22
94

14

14

13

12
52

12

11

11

10
41

3

3

2

2
9

7

6

6

5
21

2

2

2

2
11

206

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)PLAN ASSETS

Description and Allocations

Duke Energy Master Retirement Trust

Assets for both the qualified pension and other post-retirement benefits 

are maintained in the Duke Energy Master Retirement Trust. Approximately 98% 
of the Duke Energy Master Retirement Trust assets were allocated to qualified 
pension plans and approximately 2% were allocated to other post-retirement 
plans (comprised of 401(h) accounts), as of December 31, 2020, and 2019. The 
investment objective of the Duke Energy Master Retirement Trust is to invest in 
a diverse portfolio of assets that is expected to generate positive surplus return 
over time (i.e., asset growth greater than liability growth) subject to a prudent 
level of portfolio risk, for the purpose of enhancing the security of benefits for 
plan participants.

As of December 31, 2020, Duke Energy assumes pension and other 
post-retirement plan assets will generate a long-term rate of return of 6.5%. 
The expected long-term rate of return was developed using a weighted 
average calculation of expected returns based primarily on future expected 
returns across asset classes considering the use of active asset managers, 
where applicable. The asset allocation targets were set after considering the 
investment objective and the risk profile. Equity securities are held for their 
higher expected returns. Debt securities are primarily held to hedge the qualified 
pension plan. Return seeking debt securities, hedge funds and other global 
securities are held for diversification. Investments within asset classes are 
diversified to achieve broad market participation and reduce the impact of 
individual managers or investments. 

Effective January 1, 2020, the target asset allocation for the Duke Energy 

Retirement Master Trust is 58% liability hedging assets and 42% return-seeking 

assets. Duke Energy periodically reviews its asset allocation targets, and over 
time, as the funded status of the benefit plans increase, the level of asset 
risk relative to plan liabilities may be reduced to better manage Duke Energy’s 
benefit plan liabilities and reduce funded status volatility.

The Duke Energy Master Retirement Trust is authorized to engage in the 

lending of certain plan assets. Securities lending is an investment management 
enhancement that utilizes certain existing securities of the Duke Energy Master 
Retirement Trust to earn additional income. Securities lending involves the 
loaning of securities to approved parties. In return for the loaned securities, the 
Duke Energy Master Retirement Trust receives collateral in the form of cash and 
securities as a safeguard against possible default of any borrower on the return 
of the loan under terms that permit the Duke Energy Master Retirement Trust 
to sell the securities. The Duke Energy Master Retirement Trust mitigates credit 
risk associated with securities lending arrangements by monitoring the fair 
value of the securities loaned, with additional collateral obtained or refunded 
as necessary. The fair value of securities on loan was approximately $482 
million and $351 million at December 31, 2020, and 2019, respectively. Cash 
and securities obtained as collateral exceeded the fair value of the securities 
loaned at December 31, 2020, and 2019, respectively. Securities lending income 
earned by the Duke Energy Master Retirement Trust was immaterial for the years 
ended December 31, 2020, 2019 and 2018, respectively.

Qualified pension and other post-retirement benefits for the Subsidiary 

Registrants are derived from the Duke Energy Master Retirement Trust, as such, 
each are allocated their proportionate share of the assets discussed below.

The following table includes the target asset allocations by asset class at December 31, 2020, and the actual asset allocations for the Duke Energy Master 

Retirement Trust.

Global equity securities
Global private equity securities
Debt securities
Return seeking debt securities
Hedge funds
Real estate and cash
Total 

Other post-retirement assets

Target  
Allocation

28%
1%
58%
4%
3%
6%
100%

Actual Allocation at December 31,

2020

30%
1%
55%
5%
3%
6%
100%

2019

27%
1%
57%
5%
3%
7%
100%

Duke Energy’s other post-retirement assets are comprised of Voluntary Employees’ Beneficiary Association (VEBA) trusts and 401(h) accounts held within the 

Duke Energy Master Retirement Trust. Duke Energy’s investment objective is to achieve sufficient returns, subject to a prudent level of portfolio risk, for the purpose of 
promoting the security of plan benefits for participants.

The following table presents target and actual asset allocations for the VEBA trusts at December 31, 2020.

U.S. equity securities
Non-U.S. equity securities
Real estate
Debt securities
Cash

Total

Target  
Allocation

30%
6%
2%
45%
17%

100%

Actual Allocation at December 31,

2020

36%
6%
2%
42%
14%

100%

2019

35%
9%
2%
37%
17%

100%

207

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)Fair Value Measurements

Investments in corporate debt securities and U.S. government securities

Duke Energy classifies recurring and non-recurring fair value 
measurements based on the fair value hierarchy as discussed in Note 16.

Valuation methods of the primary fair value measurements disclosed 

below are as follows:

Investments in equity securities

Investments in equity securities are typically valued at the closing price 

in the principal active market as of the last business day of the reporting 
period. Principal active markets for equity prices include published exchanges 
such as NASDAQ and NYSE. Foreign equity prices are translated from their 
trading currency using the currency exchange rate in effect at the close of the 
principal active market. Prices have not been adjusted to reflect after-hours 
market activity. The majority of investments in equity securities are valued using 
Level 1 measurements. When the price of an institutional commingled fund is 
unpublished, it is not categorized in the fair value hierarchy, even though the 
funds are readily available at the fair value.

Duke Energy Master Retirement Trust 

Most debt investments are valued based on a calculation using interest 

rate curves and credit spreads applied to the terms of the debt instrument 
(maturity and coupon interest rate) and consider the counterparty credit rating. 
Most debt valuations are Level 2 measurements. If the market for a particular 
fixed-income security is relatively inactive or illiquid, the measurement is 
Level 3. U.S. Treasury debt is typically Level 2.

Investments in short-term investment funds

Investments in short-term investment funds are valued at the net asset 
value of units held at year end and are readily redeemable at the measurement 
date. Investments in short-term investment funds with published prices 
are valued as Level 1. Investments in short-term investment funds with 
unpublished prices are valued as Level 2.

The following tables provide the fair value measurement amounts for the Duke Energy Master Retirement Trust qualified pension and other post-retirement assets.

(in millions)
Equity securities
Corporate debt securities
Short-term investment funds
Partnership interests
Hedge funds
U.S. government securities
Governments bonds – foreign
Cash

Net pending transactions and other investments

Total assets(a)

December 31, 2020

Total Fair Value

Level 1

Level 2

Level 3

Not  
Categorized(b)

$3,202
4,162
397
97
198
1,164
73
98

88

$3,162
—
247
—
—
—
—
98

34

$    —
4,162
150
—
—
1,164
73
—

54

$9,479

$3,541

$5,603

$ —
—
—
—
—
—
—
—

—

$ —

$ 40
—
—
97
198
—
—
—

—

$ 335

(a)  Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 26%, 32%, 15%, 17%, 5%, 7% and 4%, respectively, 

of the Duke Energy Master Retirement Trust at December 31, 2020. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.

(b)  Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy. 

208

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)(in millions)

Equity securities
Corporate debt securities
Short-term investment funds
Partnership interests
Hedge funds
U.S. government securities
Guaranteed investment contracts
Governments bonds – foreign
Cash
Net pending transactions and other investments

Total assets(a)

December 31, 2019

Total Fair Value

Level 1

$2,730
3,999
545
104
206
1,231
11
78
75
46

$ 2,712
—
455
—
—
—
—
—
75
(43)

Level 2

$ —
3,999
90
—
—
1,231
—
78
—
89

$9,025

$ 3,199

$ 5,487

Not  
Categorized(b)

Level 3

$ —
—
—
—
—
—
11
—
—
—

$ 11

$ 18
—
—
104
206
—
—
—
—
—

$ 328

(a)  Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 26%, 31%, 15%, 17%, 5%, 7% and 4%, respectively, 

of the Duke Energy Master Retirement Trust at December 31, 2019. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.

(b)  Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy. 

The following table provides a reconciliation of beginning and ending balances of Duke Energy Master Retirement Trust qualified pension and other post-

retirement assets at fair value on a recurring basis where the determination of fair value includes significant unobservable inputs (Level 3).

(in millions)
Balance at January 1
Sales
Total gains and other, net
Transfer of Level 3 assets to other classifications

Balance at December 31

Other post-retirement assets

The following tables provide the fair value measurement amounts for VEBA trust assets. 

(in millions)
Cash and cash equivalents
Real estate
Equity securities
Debt securities

Total assets

(in millions)
Cash and cash equivalents
Real estate
Equity securities
Debt securities

Total assets

209

2020
$ 11
(12)
1
—

$ —

2019
$ 27
(18)
2
—

$ 11

December 31, 2020

Total Fair Value
$ 5
1
23
19

Level 2
$ 5
1
23
19

$48

$ 48

December 31, 2019

Total Fair Value
$ 9
1
22
18

Level 2
$ 9
1
22
18

$50

$50

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)EMPLOYEE SAVINGS PLANS

Retirement Savings Plan

Duke Energy or its affiliates sponsor, and the Subsidiary Registrants 

participate in, employee savings plans that cover substantially all U.S. 
employees. Most employees participate in a matching contribution formula 
where Duke Energy provides a matching contribution generally equal to 100% of 
employee before-tax and Roth 401(k) contributions of up to 6% of eligible pay 
per pay period. Dividends on Duke Energy shares held by the savings plans are 

charged to retained earnings when declared and shares held in the plans are 
considered outstanding in the calculation of basic and diluted EPS.

For new and rehired employees who are not eligible to participate in Duke 

Energy’s defined benefit plans, an additional employer contribution of 4% of 
eligible pay per pay period, which is subject to a three-year vesting schedule, is 
provided to the employee’s savings plan account. Certain Piedmont employees 
whose participation in a prior Piedmont defined benefit plan (that was frozen as 
of December 31, 2017) are eligible for employer transition credit contributions 
of 3% to 5% of eligible pay per period, for each pay period during the three-year 
period ending December 31, 2020.

The following table includes pretax employer matching contributions made by Duke Energy and expensed by the Subsidiary Registrants.

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

$213

214

213

$67

66

68

$57

58

58

$38

38

40

$19

20

19

$5

5

4

$11

11

10

Piedmont

$13

13

12

(in millions)

Years ended December 31,
2020

2019

2018

23. 

INCOME TAXES

Consolidated Appropriations Act

On December 27, 2020, President Trump signed the Consolidated 
Appropriations Act (CAA) into law. In addition to the CAA providing funding for 
government operations, it also provided tax provisions to assist with COVID-19 relief, 
including extending certain expiring tax provisions. The Company has reviewed the 
provisions of the CAA and has determined that there is no material impact on the 
2020 financial statements as a result of the CAA being signed into law. 

CARES Act

On March 27, 2020, the CARES Act was enacted. The CARES Act is an 

emergency economic stimulus package in response to the COVID-19 pandemic. 
Among other provisions, the CARES Act accelerates the remaining AMT credit 
refund allowances resulting in taxpayers being able to immediately claim a refund 
in full for any AMT credit carryforwards and deferral of certain 2020 payroll taxes. 
In the third quarter of 2020, Duke Energy received $572 million related to these 
AMT credit carryforwards and $19 million of interest income. In addition, the 
Company has deferred approximately $117 million of payroll taxes, with 50% 
payable by December 31, 2021, and the remaining 50% payable by December 31, 
2022. The other provisions within the CARES Act do not materially impact Duke 
Energy’s income tax accounting. See Note 1 for information on COVID-19.

Tax Act

On December 22, 2017, President Trump signed the Tax Act into law. 

Among other provisions, the Tax Act lowered the corporate federal income tax 
rate from 35% to 21%, limits interest deductions outside of regulated utility 
operations, requires the normalization of excess deferred taxes associated 
with property under the average rate assumption method as a prerequisite to 
qualifying for accelerated depreciation and repealed the federal manufacturing 
deduction. The Tax Act also repealed the corporate AMT and stipulates a refund 
of 50% of remaining AMT credit carryforwards (to the extent the credits exceed 
regular tax for the year) for tax years 2018, 2019, and 2020, with all remaining 
AMT credits to be refunded in tax year 2021.

On December 22, 2017, the SEC staff issued Staff Accounting Bulletin (SAB) 

118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act, which 
provides guidance on accounting for the Tax Act’s impact. SAB 118 provides a 
measurement period, which in no case should extend beyond one year from the Tax 
Act enactment date, during which a company acting in good faith may complete 
the accounting for the impacts of the Tax Act under ASC Topic 740. In accordance 
with SAB 118, a company must reflect the income tax effects of the Tax Act in the 
reporting period in which the accounting under ASC Topic 740 is complete. To the 
extent that a company’s accounting for certain income tax effects of the Tax Act 
is incomplete, a company can determine a reasonable estimate for those effects 
and record a provisional estimate in the financial statements in the first reporting 
period in which a reasonable estimate can be determined. 

As of December 31, 2018, the accounting for the effects of the Tax Act 
was complete. During the year ended December 31, 2018, Duke Energy recorded 
the following measurement period adjustments in accordance with SAB 118:

• Additional tax expense of $23 million related to the completion of the 

analysis of Duke Energy’s existing regulatory liability related to deferred 
taxes;

• A $10 million tax benefit for the remeasurement of deferred tax 

assets and deferred tax liabilities primarily related to the guidance on 
bonus depreciation issued by the IRS in August 2018, affecting the 
computation of the Company’s 2017 Federal income tax liability;

• Additional tax expense of $7 million related to the portion of the deferred 

tax asset as of December 31, 2017, that represents nondeductible 
long-term incentives under the Tax Act’s limitation on the deductibility 
of executive compensation; and 

• During the fourth quarter of 2018, the Company released the 

$76 million valuation allowance that it recorded in the first quarter of 

210

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued)2018 as a result of additional guidance published by the IRS that stated 
refundable AMT credits would not be subject to sequestration.

• The majority of Duke Energy’s operations are regulated and it is expected 

that the Subsidiary Registrants will ultimately pass on the savings 
associated with the amount representing the remeasurement of deferred 
tax balances related to regulated operations to customers. For Duke 
Energy’s regulated operations, where the reduction is expected to be 
returned to customers in future rates, the remeasurement has been 
deferred as a regulatory liability. During 2018, Duke Energy recorded an 

additional regulatory liability of $83 million, representing the revaluation 
of those deferred tax balances. The Subsidiary Registrants continue to 
respond to requests from regulators in various jurisdictions to determine 
the timing and magnitude of savings they will pass on to customers.

In addition, during 2018, Duke Energy reclassified $573 million of AMT 

credit carryforwards from noncurrent deferred tax liabilities to a current federal 
income tax receivable. In 2019, Duke Energy received a refund of $573 million 
related to AMT credit carryforwards based on the filing of Duke Energy’s 2018 
income tax return in 2019 and reclassified $286 million of AMT credits from 
noncurrent deferred tax liabilities to a current federal income tax receivable.

Income Tax Expense

Components of Income Tax Expense

(in millions)

Current income taxes 
Federal 
State 
Foreign 
Total current income taxes 
Deferred income taxes 
Federal 
State 
Total deferred income taxes(a)
ITC amortization 
Income tax (benefit) expense from continuing operations 
Tax expense from discontinued operations 
Total income tax (benefit) expense included in Consolidated 
Statements of Operations 

Year Ended December 31, 2020

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke 
Energy 
Indiana

Piedmont

$

(281)
(9)
1
(289)

155
(92)
63
(10)
(236)
2

$

$

314
35
—
349

(171)
(86)
(257)
(4)
88
—

280
29
—
309

(167)
(24)
(191)
(5)
113
—

$

181
17
—
198

(180)
(49)
(229)
(5)
(36)
—

$

148
24
—
172

1
25
26
—
198
—

$

10
1
—
11

30
2
32
—
43
—

$

48
7
—
55

12
17
29
—
84
—

$

(27)
(8)
—
(35)

60
(7)
53
—
18
—

$

(234)

$

88

$

113

$

(36)

$

198

$

43

$

84

$

18

(a)  Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $20 million at Duke Energy Carolinas, $3 million at Duke Energy Progress, $8 million at Duke Energy Indiana, and $11 million 
at Piedmont. In addition, total deferred income taxes includes utilization of NOL carryforwards and tax credit carryforwards of $39 million at Progress Energy, $30 million at Duke Energy Florida and $79 million at Duke Energy.

(in millions) 

Current income taxes 
Federal 
State 
Foreign 
Total current income taxes 
Deferred income taxes 
Federal 
State 
Total deferred income taxes(a)
ITC amortization 
Income tax expense from continuing operations 
Tax benefit from discontinued operations 
Total income tax expense included in Consolidated  
Statements of Operations 

Year Ended December 31, 2019

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$

(299)
10
2
(287)

855
(38)
817
(11)
519
(2)

$

$

164
13
—
177

175
(37)
138
(4)
311
—

(173)
(7)
—
(180)

422
17
439
(6)
253
—

$ (36)
(3)
—
(39)

220
(18)
202
(6)
157
—

$ (43)
18
—
(25)

$ (41)
(1)
—
(42)

$ (23)
1
—
(22)

$

153
27
180
—
155
—

77
5
82
—
40
—

128
28
156
—
134
—

(92)
(1)
—
(93)

133
3
136
—
43
—

$

517

$

311

$

253

$ 157

$ 155

$ 40

$ 134

$

43

(a)  Total deferred income taxes includes the generation of tax credit carryforwards of $8 million at Duke Energy Carolinas. In addition, total deferred income taxes includes utilization of NOL carryforwards and tax credit carryforwards of $243 
million at Progress Energy, $35 million at Duke Energy Progress, $152 million at Duke Energy Florida, $25 million at Duke Energy Ohio, $60 million at Duke Energy Indiana, $90 million at Piedmont and $775 million at Duke Energy.

211

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(in millions)

Current income taxes 
Federal 
State 
Foreign 
Total current income taxes 
Deferred income taxes 
Federal 
State 
Total deferred income taxes(a)(b)
ITC amortization 
Income tax expense from continuing operations 
Tax benefit from discontinued operations 

Total income tax expense included in Consolidated  
Statements of Operations 

Year Ended December 31, 2018

Duke  
Energy

Duke  
Energy 
Carolinas

$

(647)
(11)
3
(655)

1,064
49
1,113
(10)
448
(26)

$

(8)
6
—
(2)

299
11
310
(5)
303
—

Progress 
Energy

$ (135)
(5)
—
(140)

341
20
361
(3)
218
—

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$

(71)
(5)
—
(76)

256
(17)
239
(3)
160
—

$

(49)
(10)
—
(59)

115
45
160
—
101
—

$

$ 20
(1)
—
19

21
3
24
—
43
—

29
3
—
32

74
22
96
—
128
—

$

67
1
—
68

(36)
5
(31)
—
37
—

$

422

$ 303

$

218

$ 160

$ 101

$ 43

$ 128

$

37

(a) 

Includes benefits of NOL carryforwards and tax credit carryforwards of $22 million at Duke Energy Carolinas, $293 million at Progress Energy, $59 million at Duke Energy Progress, $219 million at Duke Energy Florida, 
$17 million at Duke Energy Ohio, $21 million at Duke Energy Indiana and $39 million at Piedmont. In addition, total deferred income taxes includes utilization of NOL carryforwards and tax credit carryforwards of $18 million at 
Duke Energy.

(b)  For the year ended December 31, 2018, the Company has revised the December 31, 2017, estimates of the income tax effects of the Tax Act, in accordance with SAB 118. See the Statutory Rate Reconciliation section below 

for additional information on the Tax Act’s impact on income tax expense.

Duke Energy Income from Continuing Operations before Income Taxes

(in millions)

Domestic
Foreign

Income from continuing operations before income taxes

Statutory Rate Reconciliation

Years Ended December 31,

2020

$ 826
13

$ 839

2019

$ 4,053
44

$ 4,097

2018

$3,018
55

$3,073

The following tables present a reconciliation of income tax expense at the U.S. federal statutory tax rate to the actual tax expense from continuing operations.

(in millions)

Income tax expense, computed at the statutory rate of 21%
State income tax, net of federal income tax effect
Amortization of excess deferred income tax
AFUDC equity income
AFUDC equity depreciation
Noncontrolling Interests
Renewable energy PTCs
Other tax credits
Tax true up
Other items, net
Income tax (benefit) expense from continuing operations

Year Ended December 31, 2020

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$

176
(80)
(276)
(48)
103
62
(110)
(37)
(12)
(14)
$ (236)

$

$

219
(40)
(82)
(13)
19
—
—
(13)
(3)
1
88

$ 243
4
(118)
(9)
10
—
—
(16)
1
(2)
$ 113

$

80
(25)
(68)
(6)
5
—
—
(14)
(5)
(3)
$ (36)

$ 204
39
(49)
(3)
5
—
—
(2)
5
(1)
$ 198

$

$

62
2
(20)
(2)
1
—
—
(1)
—
1
43

$ 103
19
(36)
(4)
4
—
—
(3)
(1)
2
84

$

$

$

61
(12)
(21)
(10)
—
—
—
(2)
1
1
18

Effective tax rate

(28.1)%

8.4%

9.7%

(9.5)%

20.4%

14.6%

17.1%

6.2%

212

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(in millions)

Income tax expense, computed at the statutory rate of 21%
State income tax, net of federal income tax effect
Amortization of excess deferred income tax
AFUDC equity income
AFUDC equity depreciation
Renewable energy PTCs
Other tax credits
Tax true up
Other items, net
Income tax expense from continuing operations

Year Ended December 31, 2019

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$ 860
(22)
(121)
(52)
34
(120)
(23)
(64)
27
$ 519

$ 360
(19)
(29)
(9)
19
—
(11)
(9)
9
$ 311

$ 332
8
(64)
(14)
10
—
(9)
(8)
(2)
$ 253

$ 202
(17)
(10)
(13)
5
—
(7)
(3)
—
$ 157

$ 178
35
(54)
(1)
5
—
(2)
(5)
(1)
$ 155

$ 59
3
(12)
(3)
1
—
(1)
(7)
—
$ 40

$ 120
22
(6)
(3)
4
—
(1)
(1)
(1)
$ 134

$ 51
2
(10)
—
—
—
(1)
—
1
$ 43

Effective tax rate

12.7%

18.1%

16.0%

16.3%

18.3%

14.3%

23.5%

17.6%

(in millions)

Income tax expense, computed at the statutory rate of 21%
State income tax, net of federal income tax effect
Amortization of excess deferred income tax
AFUDC equity income
AFUDC equity depreciation
Renewable energy PTCs
Other tax credits
Tax Act(a)
Other items, net
Income tax expense from continuing operations

Year Ended December 31, 2018

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$ 645
30
(61)
(42)
31
(129)
(28)
20
(18)
$ 448

$ 288
14
—
(15)
18
—
(7)
1
4
$ 303

$ 263
13
(55)
(22)
9
—
(13)
25
(2)
$ 218

$ 174
(17)
(1)
(12)
5
—
(5)
19
(3)
$ 160

$ 137
28
(54)
(10)
4
—
(8)
—
4
$ 101

$ 46
2
(3)
(2)
1
—
(1)
2
(2)
$ 43

$ 109
20
(2)
(2)
4
—
(1)
—
—
$ 128

$

$

35
4
—
—
—
—
(3)
—
1
37

Effective tax rate

14.6%

22.1%

17.4%

19.3%

15.4%

19.6%

24.6%

22.3%

(a)  For the year ended December 31, 2018, the Company revised the December 31, 2017, estimates of the income tax effects of the Tax Act, in accordance with SAB 118. Amounts primarily include but are not limited to items 

that are excluded for ratemaking purposes related certain wholesale fixed-rate contracts, remeasurement of nonregulated net deferred tax liabilities, Federal NOLs, and valuation allowance on foreign tax credits.

Valuation allowances have been established for certain state NOL carryforwards and state income tax credits that reduce deferred tax assets to an amount that 
will be realized on a more-likely-than-not basis. The net change in the total valuation allowance is included in State income tax, net of federal income tax effect, in the 
above tables.

Valuation allowances have been established for foreign tax credits that reduce deferred tax assets to an amount that will be realized on a more-likely-than-not 

basis. The net change in the total valuation allowance is included in Tax Act in the above tables. 

213

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
DEFERRED TAXES

Net Deferred Income Tax Liability Components

(in millions)

Deferred credits and other liabilities 
Lease obligations 
Pension, post-retirement and other employee benefits 
Progress Energy merger purchase accounting adjustments(a)
Tax credits and NOL carryforwards 
Regulatory liabilities and deferred credits
Investments and other assets
Other 
Valuation allowance 

Total deferred income tax assets 

Investments and other assets 
Accelerated depreciation rates 
Regulatory assets and deferred debits, net 
Total deferred income tax liabilities 

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

December 31, 2020

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$

286
515
236
441
3,909
—
—
93
(586)

4,894

(2,267)
(10,729)
(1,142)
(14,138)

$

85
96
(30)
—
285
11
—
8
—

455

$

87
208
68
—
508
—
—
14
—

885

$

67
120
24
—
179
—
—
9
—

399

$

18
87
38
—
282
—
—
4
—

429

$

21
5
16
—
16
18
7
7
—

90

$

7
16
26
—
183
—

1
—

233

(1,127)
(3,170)
—
(4,297)

(669)
(3,868)
(744)
(5,281)

(507)
(1,778)
(412)
(2,697)

(164)
(2,124)
(332)
(2,620)

—
(1,071)
—
(1,071)

(14)
(1,433)
(14)
(1,461)

$

38
5
(5)
—
29
—
—
8
—

75

(48)
(844)
(4)
(896)

Net deferred income tax liabilities

$

(9,244)

$(3,842)

$(4,396)

$(2,298)

$(2,191)

$ (981)

$(1,228)

$ (821)

(a)  Primarily related to lease obligations and debt fair value adjustments.

The following table presents the expiration of tax credits and NOL carryforwards.

(in millions)
General Business Credits
Federal NOL carryforwards(a) (f)
Capital loss carryforward(e)
State carryforwards and credits(b) (f)
Foreign NOL carryforwards(c)
Foreign Tax Credits(d)
Charitable contribution carryforwards

Total tax credits and NOL carryforwards 

(a)  A valuation allowance of $4 million has been recorded on the Federal NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table. 
(b)  A valuation allowance of $97 million has been recorded on the state NOL and attribute carryforwards, as presented in the Net Deferred Income Tax Liability Components table.
(c)  A valuation allowance of $12 million has been recorded on the foreign NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table.
(d)  A valuation allowance of $388 million has been recorded on the foreign tax credits, as presented in the Net Deferred Income Tax Liability Components table.
(e)  A valuation allowance of $85 million has been recorded on the Federal capital loss carryforward, as presented in the Net Deferred Income Tax Liability Components table. 
Indefinite carryforward for Federal NOLs, and NOLs for states that have adopted the Tax Act’s NOL provisions, generated in tax years beginning after December 31, 2017.
(f) 

December 31, 2020

Amount

$ 2,033
154
85
340
12
1,272
13

$ 3,909

Expiration Year
2024 — 2040
2024 — Indefinite
2024
2021 — Indefinite
2027 — 2037
2024 — 2027
2025

214

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
 
(in millions)

Deferred credits and other liabilities 
Lease obligations 
Pension, post-retirement and other employee benefits 
Progress Energy merger purchase accounting adjustments(a)
Tax credits and NOL carryforwards 
Regulatory liabilities and deferred credits
Investments and other assets
Other 
Valuation allowance 

Total deferred income tax assets 

Investments and other assets 
Accelerated depreciation rates 
Regulatory assets and deferred debits, net
Total deferred income tax liabilities 

December 31, 2019

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

$

125
462
303
389
3,925
—
—
97
(587)

4,714

(1,664)
(10,813)
(1,115)
(13,592)

$

24
72
(5)
—
262
—
—
5
—

358

$

25
193
88
—
486
—
—
8
—

800

$

49
92
38
—
176
—
—
3
—

358

(981)
(3,254)
(44)
(4,279)

(577)
(3,798)
(887)
(5,262)

(390)
(1,918)
(438)
(2,746)

Duke 
 Energy 
Florida

$ —
102
44
—
253
—
—
2
—

401

(190)
(1,913)
(477)
(2,580)

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$

14
5
17
—
16
36
10
8
—

106

—
(1,028)
—
(1,028)

$

5
17
27
—
176
52
—
1
—

278

(12)
(1,416)
—
(1,428)

$

22
6
(3)
—
19
42
2
6
—

94

—
(802)
—
(802)

Net deferred income tax liabilities 

$ (8,878)

$ (3,921)

$ (4,462)

$ (2,388)

$ (2,179)

$

(922)

$ (1,150)

$ (708)

(a)  Primarily related to finance lease obligations and debt fair value adjustments.

UNRECOGNIZED TAX BENEFITS

The following tables present changes to unrecognized tax benefits.

(in millions)
Unrecognized tax benefits – January 1
Gross decreases – tax positions in prior periods
Gross increases – current period tax positions
Reduction due to lapse of statute of limitations
Total changes

Unrecognized tax benefits – December 31

(in millions)

Unrecognized tax benefits – January 1
Unrecognized tax benefits increases
Gross decreases – tax positions in prior periods
Total changes

Unrecognized tax benefits – December 31

Year Ended December 31, 2020

Duke  
Energy
126
$
(2)
4
(3)
(1)

$

125

Duke  
Energy 
Carolinas
8
$
—
2
—
2

Progress 
Energy
9
$
—
1
—
1

Duke  
Energy 
Progress
6
$
—
—
—
—

$

10

$

10

$

6

Duke 
 Energy 
Florida
3
$
—
—
—
—

$

3

Year Ended December 31, 2019

Duke  
Energy
24
$
105
(3)
102

$ 126

Duke  
Energy 
Carolinas
6
$
2
—
2

Progress 
Energy
9
$
1
(1)
—

Duke  
Energy 
Progress
6
$
1
(1)
—

$

8

$

9

$

6

Duke 
 Energy 
Florida
3
$
—
—
—

$

3

$

Duke  
Energy  
Ohio
1
—
—
—
—

$

1

$

Duke  
Energy  
Ohio
1
—
—
—

$

1

Duke  
Energy 
Indiana
1
$
—
—
—
—

$

1

Duke  
Energy 
Indiana
1
$
—
—
—

$

1

Piedmont
4
$
—
—
(3)
(3)

$

1

Piedmont
4
$
—
—
—

$

4

215

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
(in millions)

Unrecognized tax benefits – January 1
Unrecognized tax benefits increases (decreases)
Gross decreases – tax positions in prior periods
Gross increases – tax positions in prior periods
Decreases due to settlements
Total changes

Unrecognized tax benefits – December 31

Duke  
Energy

$ 25

(2)
7
(6)
(1)

$ 24

$ 5

(1)
2
—
1

$ 6

Year Ended December 31, 2018

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

$ 5

$ 5

Duke  
Energy 
Florida

$ 5

Duke  
Energy  
Ohio

$ 1

Duke  
Energy 
Indiana

$

1

Piedmont

$

3

—
4
—
4

—
1
—
1

(4)
2
—
(2)

—
—
—
—

—
—
—
—

—
1
—
1

$ 9

$ 6

$ 3

$ 1

$

1

$

4

The following table includes additional information regarding the Duke Energy Registrants’ unrecognized tax benefits at December 31, 2020. Duke Energy 

Registrants do not anticipate a material increase or decrease in unrecognized tax benefits within the next 12 months.

(in millions)

Amount that if recognized, would affect the
effective tax rate or regulatory liability(a)

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

December 31, 2020

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana

Piedmont

$ 122

$ 10

$ 10

$

6

$

3

$

1

$

1

$

1

(a)  The Duke Energy Registrants are unable to estimate the specific amounts that would affect the ETR versus the regulatory liability.

Duke Energy and its subsidiaries are no longer subject to U.S. federal examination for years before 2016. With few exceptions, Duke Energy and its subsidiaries 

are no longer subject to state, local or non-U.S. income tax examinations by tax authorities for years before 2016.

216

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
24.  OTHER INCOME AND EXPENSES, NET

The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows.

Year Ended December 31, 2020

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy Ohio

Duke  
Energy 
Indiana

$ 32
154
27
240

$453

$

4
62
17
94

$

8
42
8
71

$

2
29
8
36

$

6
12
—
35

$

4
7
1
4

$

6
23
1
7

$177

$ 129

$ 75

$ 53

$ 16

$ 37

Year Ended December 31, 2019

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy Ohio

Duke  
Energy 
Indiana

$ 31
139
29
231

$430

$

1
42
20
88

$ 151

$ 11
66
7
57

$ 141

$ —
60
7
33

$ 100

$ 11
6
—
31

$ 48

$ 10
13
1
—

$ 24

$ 10
18
—
13

$ 41

Piedmont

$ 17
19
—
15

$ 51

Piedmont

$

1
—
—
19

$ 20

Year Ended December 31, 2018

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy Ohio

$ 20
221
15
143

$ 399

$

1
73
9
70

$153

$ 18
104
5
38

$165

$

1
57
5
24

$ 87

$ 18
47
—
21

$ 86

$

7
11
1
4

Duke  
Energy 
Indiana

$

9
32
—
4

Piedmont

$

1
—
—
13

$ 23

$ 45

$ 14

(in millions) 

Interest income
AFUDC equity 
Post in-service equity returns 
Nonoperating income, other 

Other income and expense, net 

(in millions) 

Interest income 
AFUDC equity 
Post in-service equity returns 
Nonoperating income, other

Other income and expense, net 

(in millions) 

Interest income 
AFUDC equity 
Post in-service equity returns 
Nonoperating income, other

Other income and expense, net

25.  SUBSEQUENT EVENTS

For information on subsequent events related to the sale of a minority interest in Duke Energy Indiana and regulatory matters, see Notes 1 and 3, respectively.

In February 2021, a severe winter storm impacted certain Commercial Renewables assets in Texas. Extreme weather conditions limited the ability for these 

solar and wind facilities to generate and sell electricity into the Electric Reliability Council of Texas market. The financial impact of the storm is estimated to be 
between approximately $75 million and $100 million on a pre-tax basis.

217

PART IIDUKE ENERGY CORPORATION • DUKE ENERGY CAROLINAS, LLC • PROGRESS ENERGY, INC. • DUKE ENERGY PROGRESS, LLC •  DUKE ENERGY FLORIDA, LLC  • DUKE ENERGY OHIO, INC. • DUKE ENERGY INDIANA, LLC • PIEDMONT NATURAL GAS COMPANY, INC.Combined Notes to Consolidated Financial Statements – (Continued) 
 
 
ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Management’s Annual Report on Internal Control Over Financial Reporting

Disclosure controls and procedures are controls and other procedures 
that are designed to ensure that information required to be disclosed by the 
Duke Energy Registrants in the reports they file or submit under the Exchange 
Act is recorded, processed, summarized and reported, within the time periods 
specified by the SEC rules and forms.

Disclosure controls and procedures include, without limitation, controls 

and procedures designed to provide reasonable assurance that information 
required to be disclosed by the Duke Energy Registrants in the reports they 
file or submit under the Exchange Act is accumulated and communicated to 
management, including the Chief Executive Officer and Chief Financial Officer, 
as appropriate, to allow timely decisions regarding required disclosure.
Under the supervision and with the participation of management, 
including the Chief Executive Officer and Chief Financial Officer, the Duke Energy 
Registrants have evaluated the effectiveness of their disclosure controls and 
procedures (as such term is defined in Rule 13a-15(e) and 15d-15(e) under the 
Exchange Act) as of December 31, 2020, and, based upon this evaluation, the 
Chief Executive Officer and Chief Financial Officer have concluded that these 
controls and procedures are effective in providing reasonable assurance of 
compliance.

Changes in Internal Control Over Financial Reporting

Under the supervision and with the participation of management, 
including the Chief Executive Officer and Chief Financial Officer, the Duke Energy 
Registrants have evaluated changes in internal control over financial reporting 
(as such term is defined in Rules 13a-15 and 15d-15 under the Exchange 
Act) that occurred during the fiscal quarter ended December 31, 2020, and 
have concluded no change has materially affected, or is reasonably likely to 
materially affect, internal control over financial reporting.

The Duke Energy Registrants’ management is responsible for establishing 
and maintaining an adequate system of internal control over financial reporting, 
as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). The 
Duke Energy Registrants’ internal control system was designed to provide 
reasonable assurance regarding the reliability of financial reporting and the 
preparation of financial statements for external purposes, in accordance with 
GAAP. Due to inherent limitations, internal control over financial reporting may 
not prevent or detect misstatements. Also, projections of any evaluation of 
effectiveness of the internal control over financial reporting 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 policies and procedures may 
deteriorate.

The Duke Energy Registrants’ management, including their Chief 

Executive Officer and Chief Financial Officer, has conducted an evaluation of the 
effectiveness of their internal control over financial reporting as of December 31, 
2020, based on the framework in the Internal Control – Integrated Framework 
(2013) issued by the Committee of Sponsoring Organizations of the Treadway 
Commission. Based on that evaluation, management concluded that its internal 
controls over financial reporting were effective as of December 31, 2020.
Deloitte & Touche LLP, Duke Energy’s independent registered public 
accounting firm, has issued an attestation report on the effectiveness of Duke 
Energy’s internal control over financial reporting, which is included herein. This 
report is not applicable to the Subsidiary Registrants as these companies are 
not accelerated or large accelerated filers. 

218

PART IIREPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of  
Duke Energy Corporation

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Duke Energy Corporation and subsidiaries (the “Company”) as of December 31, 2020, 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 Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on criteria 
established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial 

statements as of and for the year ended December 31, 2020, of the Company and our report dated February 25, 2021, expressed an unqualified opinion on those 
financial statements.

Basis for Opinion 

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of 
internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility 
is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable 
assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of 
internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal 
control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a 
reasonable basis for our opinion.

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 (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions 
and dispositions of the assets of the company; (2) 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 (3) provide reasonable 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/ Deloitte & Touche LLP

Charlotte, North Carolina
February 25, 2021

219

PART IIITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information regarding Duke Energy’s Executive Officers is set forth in Part I, Item 1, “Business – Information about Our Executive Officers,” in this Annual Report 

on Form 10-K. Duke Energy will provide information that is responsive to the remainder of this Item 10 in its definitive proxy statement or in an amendment to this 
Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 10 by reference.

ITEM 11. EXECUTIVE COMPENSATION

Duke Energy will provide information that is responsive to this Item 11 in its definitive proxy statement or in an amendment to this Annual Report not later than 

120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 11 by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Equity Compensation Plan Information

The following table shows information as of December 31, 2020, about securities to be issued upon exercise of outstanding options, warrants and rights under 

Duke Energy’s equity compensation plans, along with the weighted average exercise price of the outstanding options, warrants and rights and the number of securities 
remaining available for future issuance under the plans.

Plan Category

Equity compensation plans approved by security holders

Equity compensation plans not approved by security holders

Total

Number of securities  
to be issued upon exercise  
of outstanding options,  
warrants and rights
(a)

Weighted average exercise 
price of outstanding  
options, warrants and rights 
(b)(1)

Number of securities  
remaining available for  
future issuance under  
equity compensation  
plans (excluding securities 
reflected in column (a))
(c)

3,256,542(2)

143,272(4)

3,399,814

n/a

n/a

n/a

4,450,675(3)

n/a(5)

4,450,675

(1)  As of December 31, 2020, no options were outstanding under equity compensation plans.
(2) 

Includes RSUs and performance shares (assuming the maximum payout level) granted under the Duke Energy Corporation 2015 Long-Term Incentive Plan, as well as shares that could be payable with respect to certain 
compensation deferred under the Duke Energy Corporation Executive Savings Plan (Executive Savings Plan) or the Directors’ Savings Plan. 
Includes shares remaining available for issuance pursuant to stock awards under the Duke Energy Corporation 2015 Long-Term Incentive Plan.
Includes shares that could be payable with respect to certain compensation deferred under the Executive Savings Plan or the Duke Energy Corporation Directors’ Savings Plan (Directors’ Savings Plan), each of which is a 
non-qualified deferred compensation plan described in more detail below.

(3) 
(4) 

(5)  The number of shares remaining available for future issuance under equity compensation plans not approved by security holders cannot be determined because it is based on the amount of future voluntary deferrals, if any, 

under the Executive Savings Plan and the Directors’ Savings Plan.

Under the Executive Savings Plan, participants can elect to defer a portion 

of their base salary and short-term incentive compensation. Participants also 
receive a company matching contribution in excess of the contribution limits 
prescribed by the Internal Revenue Code under the Duke Energy Retirement 
Savings Plan, which is the 401(k) plan in which employees are generally eligible 
to participate. Eligible participants may also earn pay credits based on age 
and length of service on eligible earnings that exceed limited prescribed by the 
Internal Revenue Code.

In general, payments are made following termination of employment or 

death in the form of a lump sum or installments, as selected by the participant. 
Participants may direct the deemed investment of their accounts (with certain 
exceptions) among investment options available under the Duke Energy 
Retirement Savings Plan, including the Duke Energy Common Stock Fund. 
Participants may change their investment elections on a daily basis. Deferrals of 

equity awards are credited with earnings and losses based on the performance 
of the Duke Energy Common Stock Fund. The benefits payable under the plan 
are unfunded and subject to the claims of Duke Energy’s creditors.

Under the Directors’ Savings Plan, outside directors may elect to defer 

all or a portion of their annual compensation, generally consisting of retainers. 
Deferred amounts are credited to an unfunded account, the balance of which is 
adjusted for the performance of phantom investment options, including the Duke 
Energy Common Stock Fund, as elected by the director, and generally are paid 
when the director terminates his or her service from the Board of Directors.

Duke Energy will provide additional information that is responsive to this 

Item 12 in its definitive proxy statement or in an amendment to this Annual 
Report not later than 120 days after the end of the fiscal year covered by this 
Annual Report. That information is incorporated in this Item 12 by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

Duke Energy will provide information that is responsive to this Item 13 in its definitive proxy statement or in an amendment to this Annual Report not later than 

120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 13 by reference.

220

PART IIPART IIIITEM 14.  PRINCIPAL ACCOUNTING FEES AND SERVICES

Deloitte provided professional services to the Duke Energy Registrants. The following tables present the Deloitte fees for services rendered to the Duke Energy 

Registrants during 2020 and 2019.

(in millions)

Types of Fees
Audit Fees(a)
Audit-Related Fees(b)
Tax Fees(c)

Total Fees 

(in millions)

Types of Fees
Audit Fees(a)
Audit-Related Fees(b)
Tax Fees(c)

Total Fees

Year Ended December 31, 2020

Duke  
Energy

Duke  
Energy 
Carolinas

Progress 
Energy

Duke  
Energy 
Progress

Duke  
Energy 
Florida

Duke  
Energy  
Ohio

Duke  
Energy 
Indiana Piedmont

$12.9
1.7
0.1

$14.7

$3.0
0.2
—

$3.2

$ 4.5
0.3
—

$ 4.8

$ 2.3
0.1
—

$ 2.4

$ 2.2
0.2
—

$ 2.4

$ 1.9
0.3
—

$ 2.2

$

$

1.7
0.1
—

1.8

$

$

1.3
—
—

1.3

Year Ended December 31, 2019

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana Piedmont

$ 4.6
0.1
0.1

$ 4.8

$ 5.3
0.2
0.1

$ 5.6

$ 3.1
0.1
—

$ 3.2

$ 2.2
0.1
—

$ 2.3

$ 0.9
0.2
—

$ 1.1

$ 1.4
—
—

$ 1.4

$ 0.8
—
—

$ 0.8

Duke
Energy

$ 13.5
0.6
0.2

$ 14.3

(a)  Audit Fees are fees billed, or expected to be billed, by Deloitte for professional services for the financial statement audits, audit of the Duke Energy Registrants’ financial statements included in the Annual Report on Form 

10-K, reviews of financial statements included in Quarterly Reports on Form 10-Q, and services associated with securities filings such as comfort letters and consents. 

(b)  Audit-Related Fees are fees billed, or expected to be billed, by Deloitte for assurance and related services that are reasonably related to the performance of an audit or review of financial statements, including statutory 

reporting requirements.

(c)  Tax Fees are fees billed by Deloitte for tax return assistance and preparation, tax examination assistance and professional services related to tax planning and tax strategy.

To safeguard the continued independence of the independent auditor, the 
Audit Committee of Duke Energy adopted a policy that all services provided by 
the independent auditor require preapproval by the Audit Committee. Pursuant 
to the policy, certain audit services, audit-related services, tax services and 
other services have been specifically preapproved up to fee limits. In the event 

the cost of any of these services may exceed the fee limits, the Audit Committee 
must specifically approve the service. All services performed in 2020 and 2019 
by the independent accountant were approved by the Audit Committee pursuant 
to the preapproval policy.

221

PART IIPART III 
 
 
 
 
 
 
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) Consolidated Financial Statements and Supplemental Schedules included in Part II of this Annual Report are as follows:

Duke Energy Corporation

Consolidated Financial Statements
Consolidated Statements of Operations for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018 
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

Duke Energy Carolinas, LLC

Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018 
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

Progress Energy, Inc.

Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018 
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

Duke Energy Progress, LLC 

Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018 
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

Duke Energy Florida, LLC 

Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018 
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

222

PART IVDuke Energy Ohio, Inc.

Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018 
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

Duke Energy Indiana, LLC

Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018 
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018 
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

Piedmont Natural Gas Company, Inc.

Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2020, 2019 and 2018
Consolidated Balance Sheets as of December 31, 2020, and 2019 
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2020, 2019 and 2018
Notes to the Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

223

PART IVEXHIBIT INDEX

Exhibits filed herewith are designated by an asterisk (*). All exhibits not so designated are incorporated by reference to a prior filing, as indicated. Items 

constituting management contracts or compensatory plans or arrangements are designated by a double asterisk (**). The Company agrees to furnish upon request to the 
Commission a copy of any omitted schedules or exhibits upon request on all items designated by a triple asterisk (***). 

Exhibit
Number

2.1

2.2

3.1

3.2

3.3

3.3.1

3.4

3.4.1

3.5

3.5.1

3.5.2

3.5.3

3.5.4

3.6

Duke
Energy
Carolinas

Duke
Energy

X

X

X

X

Agreement and Plan of Merger between Duke Energy Corporation, Diamond 
Acquisition Corporation and Progress Energy, Inc., dated as of January 8, 2011 
(incorporated by reference to Exhibit 2.1 to Duke Energy Corporation’s Current 
Report on Form 8-K filed on January 11, 2011, File No. 1-32853).

Agreement and Plan of Merger between Piedmont Natural Gas Company, Duke 
Energy Corporation and Forest Subsidiary, Inc. (incorporated by reference to 
Exhibit 2.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on 
October 26, 2015, File No. 1-32853). 

Amended and Restated Certificate of Incorporation (incorporated by reference 
to Exhibit 3.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on 
May 20, 2014, File No. 1-32853).

Amended and Restated By-Laws of Duke Energy Corporation (incorporated by 
reference to Exhibit 3.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on January 4, 2016, File No. 1-32853).

Articles of Organization including Articles of Conversion (incorporated by 
reference to Exhibit 3.1 to Duke Energy Carolinas, LLC’s Current Report on Form 
8-K filed on April 7, 2006, File No. 1-4928).

Amended Articles of Organization, effective October 1, 2006 (incorporated by 
reference to Exhibit 3.1 to Duke Energy Carolinas, LLC’s Quarterly Report on 
Form 10-Q for the quarter ended September 30, 2006, filed on November 13, 
2006, File No. 1-4928).

Amended Articles of Incorporation of Duke Energy Ohio, Inc. (formerly The 
Cincinnati Gas & Electric Company), effective October 23, 1996, (incorporated 
by reference to Exhibit 3(a) to registrant’s Quarterly Report on Form 10-Q 
for the quarter ended September 30, 1996, filed on November 13, 1996, 
File No. 1-1232).

Amended Articles of Incorporation, effective September 19, 2006 (incorporated 
by reference to Exhibit 3.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati 
Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended 
September 30, 2006, filed on November 17, 2006, File No. 1-1232).

Certificate of Conversion of Duke Energy Indiana, LLC (incorporated by reference 
to Exhibit 3.1 to registrant’s Current Report on Form 8-K filed on January 4, 
2016, File No. 1-3543). 

Articles of Entity Conversion of Duke Energy Indiana, LLC (incorporated by 
reference to Exhibit 3.2 to registrant’s Current Report on Form 8-K filed on 
January 4, 2016, File No. 1-3543). 

Plan of Entity Conversion of Duke Energy Indiana, LLC (incorporated by 
reference to Exhibit 3.3 to registrant’s Current Report on Form 8-K filed on 
January 4, 2016, File No. 1-3543). 

Articles of Organization of Duke Energy Indiana, LLC (incorporated by reference 
to Exhibit 3.4 to registrant’s Current Report on Form 8-K filed on January 4, 
2016, File No. 1-3543).

Limited Liability Company Operating Agreement of Duke Energy Indiana, LLC 
(incorporated by reference to Exhibit 3.5 to registrant’s Current Report on Form 
8-K filed on January 4, 2016, File No. 1-3543).

Limited Liability Company Operating Agreement of Duke Energy Carolinas, LLC 
(incorporated by reference to Exhibit 3.2 to registrant’s Current Report on Form 
8-K filed on April 7, 2006, File No. 1-4928).

E-1

X

X

X

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Progress
Energy

X 

X

X

X

X

X

X

X

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

3.7

3.8

3.8.1

3.8.2

3.9

3.9.1

3.9.2

3.9.3

3.10

3.10.1

3.10.2

3.10.3

3.11

3.11.1

3.12

Regulations of Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric 
Company), effective July 23, 2003 (incorporated by reference to Exhibit 3.2 to 
registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2003, 
filed on August 13, 2003, File No. 1-1232).

Articles of Organization including Articles of Conversion for Duke Energy 
Progress, LLC (incorporated by reference to Exhibit 3.1 to registrant’s Current 
Report on Form 8-K filed on August 4, 2015, File No. 1-3382).

Plan of Conversion of Duke Energy Progress, Inc. (incorporated by reference to 
Exhibit 3.2 to registrant’s Current Report on Form 8-K filed on August 4, 2015, 
File No. 1-3382).

Limited Liability Company Operating Agreement of Duke Energy Progress, LLC 
(incorporated by reference to Exhibit 3.3 to registrant’s Current Report on Form 
8-K filed on August 4, 2015, File No. 1-3382). 

Amended and Restated Articles of Incorporation of Progress Energy, Inc. 
(formerly CP&L Energy, Inc.), effective June 15, 2000 (incorporated by reference 
to Exhibit 3(a)(1) to registrant’s Quarterly Report on Form 10-Q for the quarter 
ended June 30, 2000, filed on August 14, 2000, File No. 1-3382).

Articles of Amendment to the Amended and Restated Articles of Incorporation of 
Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective December 4, 2000 
(incorporated by reference to Exhibit 3(b)(1) to registrant’s Annual Report on 
Form 10-K for the year ended December 31, 2001, filed on March 28, 2002, 
File No. 1-3382).

Articles of Amendment to the Amended and Restated Articles of Incorporation 
of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective May 10, 2006 
(incorporated by reference to Exhibit 3(a) to registrant’s Quarterly Report on 
Form 10-Q for the quarter ended June 30, 2006, filed on August 9, 2006, 
File No. 1-15929).

By-Laws of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective May 10, 
2006 (incorporated by reference to Exhibit 3(b) to registrant’s Quarterly Report 
on Form 10-Q for the quarter ended June 30, 2006, filed on August 9, 2006, 
File No. 1-15929).

Articles of Conversion for Duke Energy Florida, LLC (incorporated by reference to 
Exhibit 3.4 to registrant’s Current Report on Form 8-K filed on August 4, 2015, 
File No. 1-3274). 

Articles of Organization for Duke Energy Florida, LLC (incorporated by reference 
to Exhibit 3.5 to registrant’s Current Report on Form 8-K filed on August 4, 
2015, File No. 1-3274). 

Plan of Conversion of Duke Energy Florida, Inc. (incorporated by reference to 
Exhibit 3.6 to registrant’s Current Report on Form 8-K filed on August 4, 2015, 
File No. 1-3274). 

Limited Liability Company Operating Agreement of Duke Energy Florida, LLC 
(incorporated by reference to Exhibit 3.7 to registrant’s Current Report on Form 
8-K filed on August 4, 2015, File No. 1-3274). 

Amended and Restated Articles of Incorporation of Piedmont Natural Gas 
Company, Inc., dated as of October 3, 2016 (incorporated by reference to 
Exhibit 3.1 to registrant’s Annual Report on Form 10-K for the fiscal year ended 
October 31, 2016, filed on December 22, 2016, File No. 001-06196).

Bylaws of Piedmont Natural Gas Company, Inc., as amended and restated 
effective October 3, 2016 (incorporated by reference to Exhibit 3.2  
to registrant’s Current Report on Form 8-K filed on October 3, 2016, 
File No. 1-06196). 

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X 

X

X

X

X

Certificate of Designations with respect to Series A Preferred Stock, dated 
March 28, 2019 (incorporated by reference to Exhibit 3.1 to registrant’s Current 
Report on Form 8-K filed on March 29, 2019, File No. 1-32853). 

X

E-2

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

3.13

3.14

3.15

3.16

3.17

3.18

3.19

3.20

4.1

4.1.1

4.1.2

4.1.3

4.1.4

4.1.5

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

Certificate of Designation with respect to the Series B Preferred Stock, dated 
September 11, 2019 (incorporated by reference to Exhibit 3.1 to registrant’s 
Current Report on Form 8-K filed on September 12, 2019, File No. 1-32853). 

Description of Registered Securities (incorporated by reference from the 
registrant’s prospectus contained in Form S-3 filed on September 23, 2019,  
File No. 333-233896,under the headings “Description of Common Stock,” 
“Description of Preferred Stock,” “Description of Depositary Shares,” 
“Description of Stock Purchase Contracts and Stock Purchase Units,” and 
“Description of Debt Securities”).

Description of Registered Securities (incorporated by reference from the 
registrant’s prospectus contained in Form S-3 filed on September 23, 2019, 
File No. 333-233896-01, under the heading “Description of Debt Securities”).

Description of Registered Securities (incorporated by reference from the 
registrant’s prospectus contained in Form S-3 filed on September 23, 2019, 
File No. 333-233896-02, under the headings “Description of First Mortgage 
Bonds” and “Description of Debt Securities”).

Description of Registered Securities (incorporated by reference from the 
registrant’s prospectus contained in Form S-3 filed on September 23, 2019, 
File No. 333-233896-03, under the headings “Description of First Mortgage 
Bonds” and “Description of Unsecured Debt Securities”). 

Description of Registered Securities (incorporated by reference from the 
registrant’s prospectus contained in Form S-3 filed on September 23, 2019, 
File No. 333-233896-04, under the headings “Description of First Mortgage 
Bonds” and “Description of Unsecured Debt Securities”). 

Description of Registered Securities (incorporated by reference from the 
registrant’s prospectus contained in Form S-3 filed on September 23, 2019, 
File No. 333-233896-05, under the headings “Description of First Mortgage 
Bonds” and “Description of Debt Securities”). 

Description of Registered Securities (incorporated by reference from the 
registrant’s prospectus contained in Form S-3 filed on September 23, 2019, 
File No. 333-233896-06, under the headings “Description of First and 
Refunding Mortgage Bonds,” “Description of Senior Notes,” and “Description 
of Subordinate Notes”). 

Indenture between Duke Energy Corporation and The Bank of New York Mellon 
Trust Company, N.A., as Trustee, dated as of June 3, 2008 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on June 16, 2008, File No. 1-32853).

First Supplemental Indenture, dated as of June 16, 2008 (incorporated by 
reference to Exhibit 4.2 to Duke Energy Corporation’s Current Report on Form 
8-K filed on June 16, 2008, File No. 1-32853).

Second Supplemental Indenture, dated as of January 26, 2009 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on  
Form 8-K filed on January 26, 2009, File No. 1-32853).

Third Supplemental Indenture, dated as of August 28, 2009 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on August 28, 2009, File No. 1-32853).

Fourth Supplemental Indenture, dated as of March 25, 2010 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on March 25, 2010, File No. 1-32853).

Fifth Supplemental Indenture, dated as of August 25, 2011 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on August 25, 2011, File No. 1-32853).

X

X

X

X

X

X

X

X

E-3

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.1.6

4.1.7

4.1.8

4.1.9

4.1.10

4.1.11

4.1.12

4.1.13

4.1.14

4.1.15

4.1.16

4.1.17

4.1.18

4.1.19

4.1.20

4.1.21

4.1.22

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Sixth Supplemental Indenture, dated as of November 17, 2011 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on November 17, 2011, File No. 1-32853).

Seventh Supplemental Indenture, dated as of August 16, 2012 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on August 16, 2012, File No. 1-32853).

Eighth Supplemental Indenture, dated as of January 14, 2013 (incorporated by 
reference to Exhibit 2 to the Registration Statement of Form 8-A of Duke Energy 
Corporation filed on January 14, 2013, File No. 1-32853).

Ninth Supplemental Indenture, dated as of June 13, 2013 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on June 13, 2013, File No. 1-32853).

Tenth Supplemental Indenture, dated as of October 11, 2013 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on October 11, 2013, File No. 1-32853).

Eleventh Supplemental Indenture, dated as of April 4, 2014 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Corporation’s Current Report on Form 
8-K filed on April 4, 2014, File No. 1-32853). 

Twelfth Supplemental Indenture, dated as of November 19, 2015 (incorporated 
by reference to Exhibit 4.2 to Duke Energy Corporation’s Current Report on Form 
8-K filed on November 19, 2015, File No. 1-32853). 

Thirteenth Supplemental Indenture, dated as of April 18, 2016, to the indenture 
dated as of June 3, 2008, between Duke Energy Corporation and The Bank of 
New York Mellon Trust Company, N.A., as Trustee (incorporated by reference to 
Exhibit 4.1 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the 
quarter ended March 31, 2016, filed on May 5, 2016, File No. 1-32853).

Fourteenth Supplemental Indenture, dated as of August 12, 2016 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
August 12, 2016, File No. 1-32853). 

Fifteenth Supplemental Indenture, dated as of April 11, 2017 (incorporated by 
reference to Exhibit 4.2 to registrant’s Quarterly Report on Form 10-Q for the 
quarter ended March 31, 2017, filed on May 9, 2017, File No. 1-32853).

Sixteenth Supplemental Indenture, dated as of June 13, 2017 (incorporated by 
reference to Exhibit 4.1 to registrant’s Quarterly Report on Form 10-Q for the 
quarter ended June 30, 2017, filed on August 3, 2017, File No. 1-32853). 

Seventeenth Supplemental Indenture, dated as of August 10, 2017 
(incorporated by reference to Exhibit 4.1 to registrant’s Current Report on 
Form 8-K filed on August 10, 2017, File No. 1-32853). 

Eighteenth Supplemental Indenture, dated as of March 29, 2018 (incorporated 
by reference to Exhibit 4.2 to registrant’s Quarterly Report on Form 10-Q for the 
quarter ended March 31, 2018, filed on May 10, 2018, File No. 1-32853).

Nineteenth Supplemental Indenture, dated as of May 16, 2018 (incorporated 
by reference to Exhibit 4.1 to registrant’s Quarterly Report on Form 10-Q for the 
quarter ended June 30, 2018, filed on August 2, 2018, File No. 1-32853). 

Twentieth Supplemental Indenture (incorporated by reference to Exhibit 4.2 to 
registrant’s Registration Statement on Form 8-A filed on September 17, 2018, 
File No. 1-32853).

Twenty-first Supplemental Indenture (incorporated by reference to Exhibit 4.1  
to registrant’s Current Report on Form 8-K filed on March 11, 2019, 
File no. 1-32853).

Twenty-second Supplemental Indenture, dated as of June 7, 2019 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
June 7, 2019, File No. 1-32853).

E-4

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.1.23

4.1.24

4.2

4.2.1

4.2.2

4.3

4.3.1

4.3.2

4.3.3

4.3.4

4.3.5

4.3.6

4.3.7

4.3.8

4.3.9

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Twenty-third Supplemental Indenture, dated as of May 15, 2020 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
May 15, 2020, File No. 1-32853). 

Twenty-fourth Supplemental Indenture, dated as of September 11, 2020 
(incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 
8-K filed on September 11, 2020, File No. 1-32853).

X

X

Senior Indenture between Duke Energy Carolinas, LLC and The Bank of New 
York Mellon Trust Company, N.A., as successor trustee to JPMorgan Chase Bank 
(formerly known as The Chase Manhattan Bank), dated as of September 1, 
1998 (incorporated by reference to Exhibit 4-D-1 to registrant’s Post-Effective 
Amendment No. 2 to Registration Statement on Form S-3 filed on April 7, 1999, 
File No. 333-14209).

Fifteenth Supplemental Indenture, dated as of April 3, 2006 (incorporated by 
reference to Exhibit 4.4.1 to registrant’s Registration Statement on Form S-3 
filed on October 3, 2007, File No. 333-146483-03).

Sixteenth Supplemental Indenture, dated as of June 5, 2007 (incorporated by 
reference to Exhibit 4.1 registrant’s Current Report on Form 8-K filed on June 6, 
2007, File No. 1-4928).

First and Refunding Mortgage from Duke Energy Carolinas, LLC to The Bank 
of New York Mellon Trust Company, N.A., successor trustee to Guaranty Trust 
Company of New York, dated as of December 1, 1927 (incorporated by reference 
to Exhibit 7(a) to registrant’s Form S-1, effective October 15, 1947,  
File No. 2-7224).

Instrument of Resignation, Appointment and Acceptance among Duke Energy 
Carolinas, LLC, JPMorgan Chase Bank, N.A., as Trustee, and The Bank of New 
York Mellon Trust Company, N.A., as Successor Trustee, dated as of  
September 24, 2007, (incorporated by reference to Exhibit 4.6.1 to registrant’s 
Registration Statement on Form S-3 filed on October 3, 2007,  
File No. 333-146483).

Ninth Supplemental Indenture, dated as of February 1, 1949 (incorporated by 
reference to Exhibit 7(j) to registrant’s Form S-1 filed on February 3, 1949,  
File No. 2-7808).

Twentieth Supplemental Indenture, dated as of June 15, 1964 (incorporated by 
reference to Exhibit 4-B-20 to registrant’s Form S-1 filed on August 23, 1966, 
File No. 2-25367).

Twenty-third Supplemental Indenture, dated as of February 1, 1968 
(incorporated by reference to Exhibit 2-B-26 to registrant’s Form S-9 filed on 
January 21, 1969, File No. 2-31304).

Sixtieth Supplemental Indenture, dated as of March 1, 1990 (incorporated by 
reference to Exhibit 4-B-61 to registrant’s Annual Report on Form 10-K for the 
year ended December 31, 1990, File No. 1-4928).

Sixty-third Supplemental Indenture, dated as of July 1, 1991 (incorporated by 
reference to Exhibit 4-B-64 to registrant’s Registration Statement on Form S-3 
filed on February 13, 1992, File No. 33-45501).

Eighty-fourth Supplemental Indenture, dated as of March 20, 2006 
(incorporated by reference to Exhibit 4.6.9 to registrant’s Registration Statement 
on Form S-3 filed on October 3, 2007, File No. 333-146483-03).

Eighty-fifth Supplemental Indenture, dated as of January 10, 2008 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on 
Form 8-K filed on January 11, 2008, File No. 1-4928).

Eighty-seventh Supplemental Indenture, dated as of April 14, 2008 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s 
Current Report on Form 8-K filed on April 15, 2008, File No. 1-4928).

E-5

X

X

X

X

X

X

X

X

X

X

X 

X

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.3.10

4.3.11

4.3.12

4.3.13

4.3.14

4.3.15

4.3.16

4.3.17

4.3.18

4.3.19

4.3.20

4.3.21

4.3.22

4.3.23

4.4

4.4.1

4.4.2

Eighty-eighth Supplemental Indenture, dated as of November 17, 2008 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s 
Current Report on Form 8-K filed on November 20, 2008, File No. 1-4928).

Ninetieth Supplemental Indenture, dated as of November 19, 2009 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s 
Current Report on Form 8-K filed on November 19, 2009, File No. 1-4928).

Ninety-first Supplemental Indenture, dated as of June 7, 2010 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 
8-K filed on June 7, 2010, File No. 1-4928).

Ninety-third Supplemental Indenture, dated as of May 19, 2011 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on 
Form 8-K filed on May 19, 2011, File No. 1-4928).

Ninety-fourth Supplemental Indenture, dated as of December 8, 2011 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s 
Current Report on Form 8-K filed on December 8, 2011, File No. 1-4928).

Ninety-fifth Supplemental Indenture, dated as of September 21, 2012 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s 
Current Report on Form 8-K filed on September 21, 2012, File No. 1-4928).

Ninety-sixth Supplemental Indenture, dated as of March 12, 2015, between 
Duke Energy Carolinas, LLC and The Bank of New York Mellon Trust Company, 
N.A., as Trustee (incorporated by reference to Exhibit 4.1 to Duke Energy 
Carolinas, LLC’s Current Report on Form 8-K filed on March 12, 2015,  
File No. 1-4928). 

Ninety-seventh Supplemental Indenture, dated as of March 11, 2016 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas,  
LLC’s Current Report on Form 8-K filed on March 11, 2016, File No. 1-4928). 

Ninety-eighth Supplemental Indenture, dated as of November 17, 2016 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s 
Current Report on Form 8-K filed on November 17, 2016, File No. 1-4928). 

Ninety-ninth Supplemental Indenture, dated as of November 14, 2017 
(incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC Current 
Report on Form 8-K filed on November 14, 2017, File No. 1-4928).

One Hundredth Supplemental Indenture, dated as of March 1, 2018 
(incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 
8-K filed on March 1, 2018, File No. 1-4928).

One-Hundred and Second Supplemental Indenture, dated as of August 14, 2019 
(incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 
8-K filed on August 14, 2019, File No. 1-04928).

One-Hundred and Third Supplemental Indenture, dated as of January 8, 2020 
(incorporated by reference to Exhibit 4.2 to registrant’s Current Report on Form 
8-K filed on January 8, 2020, File No. 1-4928).

One-Hundred and Fourth Supplemental Indenture, dated as of January 8, 2020 
(incorporated by reference to Exhibit 4.3 to registrant’s Current Report on Form 
8-K filed on January 8, 2020, File No. 1-4928).

Mortgage and Deed of Trust between Duke Energy Progress, Inc. (formerly 
Carolina Power & Light Company) and The Bank of New York Mellon (formerly 
Irving Trust Company) and Frederick G. Herbst (Tina D. Gonzalez, successor), 
as Trustees, dated as of May 1, 1940.

First through Fifth Supplemental Indentures thereto (incorporated by reference 
to Exhibit 2(b), File No. 2-64189). 

Sixth Supplemental Indenture dated April 1, 1960 (incorporated by reference to 
Exhibit 2(b)-5, File No. 2-16210).

E-6

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.4.3

4.4.4

4.4.5

4.4.6

4.4.7

4.4.8

4.4.9

4.4.10

4.4.11

4.4.12

4.4.13

4.4.14

4.4.15

4.4.16

4.4.17

4.4.18

4.4.19

4.4.20

4.4.21

4.4.22

4.4.23

4.4.24

4.4.25

4.4.26

Seventh Supplemental Indenture dated November 1, 1961 (incorporated by 
reference to Exhibit 2(b)-6, File No. 2-16210).

Eighth Supplemental Indenture dated July 1, 1964 (incorporated by reference to 
Exhibit 4(b)-8, File No. 2-19118).

Ninth Supplemental Indenture dated April 1, 1966 (incorporated by reference to 
Exhibit 4(b)-2, File No. 2-22439).

Tenth Supplemental Indenture dated October 1, 1967 (incorporated by reference 
to Exhibit 4(b)-2, File No. 2-24624).

Eleventh Supplemental Indenture dated October 1, 1968 (incorporated by 
reference to Exhibit 2(c), File No. 2-27297).

Twelfth Supplemental Indenture dated January 1, 1970 (incorporated by 
reference to Exhibit 2(c), File No. 2-30172).

Thirteenth Supplemental Indenture dated August 1, 1970 (incorporated by 
reference to Exhibit 2(c), File No. 2-35694).

Fourteenth Supplemental Indenture dated January 1, 1971 (incorporated by 
reference to Exhibit 2(c), File No. 2-37505).

Fifteenth Supplemental Indenture dated October 1, 1971 (incorporated by 
reference to Exhibit 2(c), File No. 2-39002).

Sixteenth Supplemental Indenture dated May 1, 1972 (incorporated by reference 
to Exhibit 2(c), File No. 2-41738).

Seventeenth Supplemental Indenture dated November 1, 1973 (incorporated by 
reference to Exhibit 2(c), File No. 2-43439).

Eighteenth Supplemental Indenture dated (incorporated by reference to Exhibit 
2(c), File No. 2-47751).

Nineteenth Supplemental Indenture dated May 1, 1974 (incorporated by 
reference to Exhibit 2(c), File No. 2-49347).

Twentieth Supplemental Indenture dated December 1, 1974 (incorporated by 
reference to Exhibit 2(c), File No. 2-53113).

Twenty-first Supplemental Indenture dated April 15, 1975 (incorporated by 
reference to Exhibit 2(d), File No. 2-53113).

Twenty-second Supplemental Indenture dated October 1, 1977 (incorporated by 
reference to Exhibit 2(c), File No. 2-59511).

Twenty-third Supplemental Indenture dated June 1, 1978 (incorporated by 
reference to Exhibit 2(c), File No. 2-61611).

Twenty-fourth Supplemental Indenture dated May 15, 1979 (incorporated by 
reference to Exhibit 2(d), File No. 2-64189).

Twenty-fifth Supplemental Indenture dated November 1, 1979 (incorporated by 
reference to Exhibit 2(c), File No. 2-65514).

Twenty-sixth Supplemental Indenture dated November 1, 1979 (incorporated by 
reference to Exhibit 2(c), File No. 2-66851).

Twenty-seventh Supplemental Indenture dated April 1, 1980 (incorporated by 
reference to Exhibit 2 (d), File No. 2-66851).

Twenty-eighth Supplemental Indenture dated October 1, 1980 (incorporated by 
reference to Exhibit 4(b)-1, File No. 2-81299).

Twenty-ninth Supplemental Indenture dated October 1, 1980 (incorporated by 
reference to Exhibit 4(b)-2, File No. 2-81299).

Thirtieth Supplemental Indenture dated December 1, 1982 (incorporated by 
reference to Exhibit 4(b)- 3, File No. 2-81299).

E-7

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IVExhibit
Number

4.4.27

4.4.28

4.4.29

4.4.30

4.4.31

4.4.32

4.4.33

4.4.34

4.4.35

4.4.36

4.4.37

4.4.38

4.4.39

4.4.40

4.4.41

4.4.42

4.4.43

4.4.44

4.4.45

4.4.46

4.4.47

4.4.48

4.4.49

4.4.50

Thirty-first Supplemental Indenture dated March 15, 1983 (incorporated by 
reference to Exhibit 4(c)-1, File No. 2-95505).

Thirty-second Supplemental Indenture dated March 15, 1983 (incorporated by 
reference to Exhibit 4(c)-2, File No. 2-95505).

Thirty-third Supplemental Indenture dated December 1, 1983 (incorporated by 
reference to Exhibit 4(c)-3, File No. 2-95505).

Thirty-fourth Supplemental Indenture dated December 15, 1983 (incorporated 
by reference to Exhibit 4(c)-4, File No. 2-95505).

Thirty-fifth Supplemental Indenture dated April 1, 1984 (incorporated by 
reference to Exhibit 4(c)-5, File No. 2-95505).

Thirty-sixth Supplemental Indenture dated June 1, 1984 (incorporated by 
reference to Exhibit 4(c)-6, File No. 2-95505).

Thirty-seventh Supplemental Indenture dated June 1, 1984 (incorporated by 
reference to Exhibit 4(c)-7, File No. 2-95505).

Thirty-eighth Supplemental Indenture dated June 1, 1984 (incorporated by 
reference to Exhibit 4(c)- 8, File No. 2-95505).

Thirty-ninth Supplemental Indenture dated April 1, 1985 (incorporated by 
reference to Exhibit 4(b), File No. 33-25560).

Fortieth Supplemental Indenture dated October 1, 1985 (incorporated by 
reference to Exhibit 4(c), File No. 33-25560).

Forty-first Supplemental Indenture dated March 1, 1986 (incorporated by 
reference to Exhibit 4(d), File No. 33-25560).

Forty-second Supplemental Indenture dated July 1, 1986 (incorporated by 
reference to Exhibit 4(e), File No. 33-25560).

Forty-third Supplemental Indenture dated January 1, 1987 (incorporated by 
reference to Exhibit 4(f), File No. 33-25560).

Forty-fourth Supplemental Indenture dated December 1, 1987 (incorporated by 
reference to Exhibit 4(g), File No. 33-25560).

Forty-fifth Supplemental Indenture dated September 1, 1988 (incorporated by 
reference to Exhibit 4(h), File No. 33-25560).

Forty-sixth Supplemental Indenture dated April 1, 1989 (incorporated by 
reference to Exhibit 4(b), File No. 33-33431).

Forty-seventh Supplemental Indenture dated August 1, 1989 (incorporated by 
reference to Exhibit 4(c), File No. 33-33431).

Forty-eighth Supplemental Indenture dated November 15, 1990 (incorporated 
by reference to Exhibit 4(b), File No. 33-38298).

Forty-ninth Supplemental Indenture dated November 15, 1990 (incorporated by 
reference to Exhibit 4(c), File No. 33-38298).

Fiftieth Supplemental Indenture dated February 15, 1991 (incorporated by 
reference to Exhibit 4(h), File No. 33-42869).

Fifty-first Supplemental Indenture dated April 1, 1991 (incorporated by 
reference to Exhibit 4(i), File No. 33-42869).

Fifty-second Supplemental Indenture dated September 15, 1991(incorporated 
by reference to Exhibit 4(e), File No. 33-48607).

Fifty-third Supplemental Indenture dated January 1, 1992 (incorporated by 
reference to Exhibit 4(f), File No. 33-48607).

Fifty-fourth Supplemental Indenture dated April 15, 1992 (incorporated by 
reference to Exhibit 4 (g), File No. 33-48607).

E-8

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IVExhibit
Number

4.4.51

4.4.52

4.4.53

4.4.54

4.4.55

4.4.56

4.4.57

4.4.58

4.4.59

4.4.60

4.4.61

4.4.62

4.4.63

4.4.64

4.4.65

4.4.66

4.4.67

4.4.68

Fifty-fifth Supplemental Indenture dated July 1, 1992 (incorporated by reference 
to Exhibit 4(e), File No. 33-55060).

Fifty-sixth Supplemental Indenture dated October 1, 1992 (incorporated by 
reference to Exhibit 4(f), File No. 33-55060).

Fifty-seventh Supplemental Indenture dated February 1, 1993 (incorporated by 
reference to Exhibit 4(e), File No. 33-60014).

Fifty-eighth Supplemental Indenture dated March 1, 1993 (incorporated by 
reference to Exhibit 4(f), File No. 33-60014).

Fifty-ninth Supplemental Indenture dated July 1, 1993 (incorporated by 
reference to Exhibit 4(a) to Post-Effective Amendment No. 1, File No. 33-38349).

Sixtieth Supplemental Indenture dated July 1, 1993 (incorporated by reference 
to Exhibit 4(b) to Post-Effective Amendment No. 1, File No. 33-38349).

Sixty-first Supplemental Indenture dated August 15, 1993 (incorporated by 
reference to Exhibit 4(e), File No. 33-50597).

Sixty-second Supplemental Indenture dated January 15, 1994 (incorporated 
by reference to Exhibit 4 to Duke Energy Progress’ Current Report on Form 8-K 
dated January 19, 1994, File No. 1-3382).

Sixty-third Supplemental Indenture dated May 1, 1994 (incorporated by reference 
to Exhibit 4(f) for Duke Energy Progress’ Form S-3, File No. 033-57835).

Sixty-fourth Supplemental Indenture dated August 15, 1997 (incorporated by 
reference to Exhibit to Duke Energy Progress’ Current Report on Form 8-K dated 
August 26, 1997, File No. 1-3382).

Sixty-fifth Supplemental Indenture dated April 1, 1998 (incorporated by 
reference to Exhibit 4(b) for Duke Energy Progress’ Registration Statement on 
Form S-3 filed December 18, 1998, File No. 333-69237).

Sixty-sixth Supplemental Indenture dated March 1, 1999 (incorporated by 
reference to Exhibit 4(c) to Duke Energy Progress’ Current Report on Form 8-K 
filed on March 19, 1999, File No. 1-3382).

Form of Carolina Power & Light Company First Mortgage Bond, 6.80% Series 
Due August 15, 2007 (incorporated by reference to Exhibit 4 to Duke Energy 
Progress’ Form 10-Q for the period ended September 30, 1998,  
File No. 1-3382).

Sixty-eighth Supplemental Indenture dated April 1, 2000 (incorporated by 
reference to Exhibit No. 4(b) to Duke Energy Progress’ Current Report on Form 
8-K filed on April 20, 2000, File No. 1-3382).

Sixty-ninth Supplemental Indenture dated June 1, 2000 (incorporated by 
reference to Exhibit No. 4b(2) to Duke Energy Progress’ Annual Report on Form 
10-K for the year ended December 31, 2000, filed on March 29, 2001,  
File No. 1-3382).

Seventieth Supplemental Indenture dated July 1, 2000 (incorporated by 
reference to Exhibit 4b(3) to Duke Energy Progress’ Annual Report on Form 10-K 
for the year ended December 31, 2000, filed on March 29, 2001,  
File No. 1-3382).

Seventy-first Supplemental Indenture dated February 1, 2002 (incorporated by 
reference to Exhibit 4b(2) to Duke Energy Progress’ Annual Report on Form 10-K 
for the year ended December 31, 2001, filed on March 28, 2002,  
File No. 1-3382 and 1-15929). 

Seventy-second Supplemental Indenture, dated as of September 1, 2003 
(incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly 
Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) 
Current Report on Form 8-K filed on September 12, 2003, File No. 1-3382).

E-9

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.4.69

4.4.70

4.4.71

4.4.72

4.4.73

4.4.74

4.4.75

4.4.76

4.4.77

4.4.78

4.4.79

4.4.80

4.4.81

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Seventy-third Supplemental Indenture, dated as of March 1, 2005 (incorporated 
by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina 
Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report 
on Form 8-K filed on March 22, 2005, File No. 1-3382).

Seventy-fourth Supplemental Indenture, dated as of November 1, 2005 
(incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly 
Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) 
Current Report on Form 8-K filed on November 30, 2005, File No. 1-3382).

Seventy-fifth Supplemental Indenture, dated as of March 1, 2008 (incorporated 
by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina 
Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report 
on Form 8-K filed on March 13, 2008, File No. 1-3382).

Seventy-sixth Supplemental Indenture, dated as of January 1, 2009 
(incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly 
Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) 
Current Report on Form 8-K filed on January 15, 2009, File No. 1-3382).

Seventy-seventh Supplemental Indenture, dated as of June 18, 2009 
(incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly 
Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) 
Current Report on Form 8-K filed on June 23, 2009, File No. 1-3382).

Seventy-eighth Supplemental Indenture, dated as of September 1, 2011 
(incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly 
Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) 
Current Report on Form 8-K filed on September 15, 2011, File No. 1-3382).

Seventy-ninth Supplemental Indenture, dated as of May 1, 2012 (incorporated 
by reference to Exhibit 4 to Duke Energy Progress, Inc.’s (formerly Carolina 
Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report 
on Form 8-K filed on May 18, 2012, File No. 1-3382).

Eightieth Supplemental Indenture, dated as of March 1, 2013 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Progress, Inc.’s (formerly Carolina Power 
& Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on 
Form 8-K filed on March 12, 2013, File No. 1-3382).

Eighty-second Supplemental Indenture, dated as of March 1, 2014, between 
Duke Energy Progress, Inc. and The Bank of New York Mellon (formerly Irving 
Trust Company) and Tina D. Gonzalez (successor to Frederick G. Herbst) and 
forms of global notes (incorporated by reference to Exhibit 4.1 to Duke Energy 
Progress, Inc.’s Current Report on Form 8-K filed on March 6, 2014,  
File No. 1-3382).

Eighty-third Supplemental Indenture, dated as of November 1, 2014, between 
Duke Energy Progress, Inc. and The Bank of New York Mellon (formerly Irving 
Trust Company) and Tina D. Gonzalez (successor to Frederick G. Herbst) and 
forms of global notes (incorporated by reference to Exhibit 4.1 to Duke Energy 
Progress, Inc.’s Current Report on Form 8-K filed on November 20, 2014,  
File No. 1-3382).

Eighty-fifth Supplemental Indenture, dated as of August 1, 2015 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Progress, LLC’s Current Report on 
Form 8-K filed on August 13, 2015, File No. 1-3382).

Eighty-sixth Supplemental Indenture, dated as of September 1, 2016 
(incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 
8-K filed on September 16, 2016, File No. 1-15929).

Eighty-seventh Supplemental Indenture, dated as of September 1, 2017 
(incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 
8-K filed on September 8, 2017, File No. 1-3382).

E-10

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.4.82

4.4.83

4.4.84

4.5

4.6

4.7

4.7.1

4.7.2

4.7.3

4.7.4

4.7.5

4.7.6

4.7.7

4.7.8

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Eighty-ninth Supplemental Indenture (incorporated by reference to Exhibit 4.1 
to registrant’s Current Report on Form 8-K filed on March 7, 2019,  
File no. 1-3382). 

Ninetieth Supplemental Indenture, dated as of August 1, 2020 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
August 20, 2020, File No. 1-3382).

First Supplemental Indenture, dated as of August 1, 2020 (incorporated by 
reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on 
August 20, 2020, File No. 1-3382).

Indenture (for Debt Securities) between Duke Energy Progress, Inc. (formerly 
Carolina Power & Light Company) and The Bank of New York Mellon (successor 
in interest to The Chase Manhattan Bank), as Trustee (incorporated by reference 
to Exhibit 4(a) to registrant’s Current Report on Form 8-K filed on November 5, 
1999, File No. 1-3382).

Indenture (for [Subordinated] Debt Securities) (open ended) (incorporated by 
reference to Exhibit 4(a)(2) to Duke Energy Progress, Inc.’s (formerly Carolina 
Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Registration 
Statement on Form S-3 filed on November 18, 2008, File No. 333-155418).

Indenture (for First Mortgage Bonds) between Duke Energy Florida, Inc. 
(formerly Florida Power Corporation) and The Bank of New York Mellon (as 
successor to Guaranty Trust Company of New York and The Florida National 
Bank of Jacksonville), as Trustee, dated as of January 1, 1944, (incorporated 
by reference to Exhibit B-18 to registrant’s Form A-2, File No. 2-5293).

Seventh Supplemental Indenture (incorporated by reference to Exhibit 4(b) to 
Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration 
Statement on Form S-3 filed on September 27, 1991, File No. 33-16788).

Eighth Supplemental Indenture (incorporated by reference to Exhibit 4(c) to 
Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration 
Statement on Form S-3 filed on September 27, 1991, File No. 33-16788).

Sixteenth Supplemental Indenture (incorporated by reference to Exhibit 4(d) to 
Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration 
Statement on Form S-3 filed on September 27, 1991, File No. 33-16788).

Twenty-ninth Supplemental Indenture (incorporated by reference to Exhibit 4(c) 
to Duke Energy Florida, Inc.’s (formerly Florida Power Corporation) Registration 
Statement on Form S-3 filed on September 17, 1982, File No. 2-79832).

Thirty-eighth Supplemental Indenture, dated as of July 25, 1994 (incorporated 
by reference to exhibit 4(f) to Duke Energy Florida, Inc.’s (formerly Florida Power 
Corporation) Registration Statement on Form S-3 filed on August 29, 1994,  
File No. 33-55273).

Forty-first Supplemental Indenture, dated as of February 1, 2003 (incorporated 
by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Duke Energy 
Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report 
on Form 8-K filed on February 21, 2003, File No. 1-3274).

Forty-second Supplemental Indenture, dated as of April 1, 2003 (incorporated 
by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power 
Corporation (d/b/a Progress Energy Florida, Inc.)) Quarterly Report on Form 
10-Q for the quarter ended June 30, 2003, filed on August 11, 2003,  
File No. 1-3274).

Forty-third Supplemental Indenture, dated as of November 1, 2003 
(incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly 
Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report 
on Form 8-K filed on November 21, 2003, File No. 1-3274).

E-11

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.7.9

4.7.10

4.7.11

4.7.12

4.7.13

4.7.14

4.7.15

4.7.16

4.7.17

4.7.18

4.7.19

4.8

4.8.1

4.8.2

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Forty-fourth Supplemental Indenture, dated as of August 1, 2004 (incorporated 
by reference to Exhibit 4(m) to Duke Energy Florida, Inc.’s (formerly Florida 
Power Corporation (d/b/a Progress Energy Florida, Inc.)) Annual Report on Form 
10-K for the year ended December 31, 2004, filed on March 16, 2005,  
File No. 1-3274).

Forty-sixth Supplemental Indenture, dated as of September 1, 2007 
(incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly 
Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report 
on Form 8-K filed on September 19, 2007, File No. 1-3274).

Forty-seventh Supplemental Indenture, dated as of December 1, 2007 
(incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly 
Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report 
on Form 8-K filed on December 13, 2007, File No. 1-3274).

Forty-eighth Supplemental Indenture, dated as of June 1, 2008 (incorporated 
by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power 
Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K 
filed on June 18, 2008, File No. 1-3274).

Forty-ninth Supplemental Indenture, dated as of March 1, 2010 (incorporated 
by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power 
Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K 
filed on March 25, 2010, File No. 1-3274).

Fiftieth Supplemental Indenture, dated as of August 11, 2011 (incorporated 
by reference to Exhibit 4 to Duke Energy Florida, Inc.’s (formerly Florida Power 
Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K 
filed on August 18, 2011, File No. 1-3274).

Fifty-first Supplemental Indenture, dated as of November 1, 2012 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Florida, Inc.’s (formerly Florida Power 
Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K 
filed on November 20, 2012, File No. 1-3274).

Fifty-third Supplemental Indenture, dated as of September 1, 2016 
(incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 
8-K filed on September 9, 2016, File No. 1-03274). 

Fifty-fifth Supplemental Indenture, dated as of June 1, 2018 (incorporated by 
reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
June 21, 2018, File No. 1-3274).

Fifty-sixth Supplemental Indenture, dated as of November 1, 2019 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
November 26, 2019, File No. 1-3274). 

Fifty-seventh Supplemental Indenture, dated as of June 1, 2020 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
June 11, 2020, File No. 1-3274).

Indenture (for Debt Securities) between Duke Energy Florida, Inc. (formerly 
Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) and The Bank 
of New York Mellon Trust Company, National Association (successor in interest 
to J.P. Morgan Trust Company, National Association), as Trustee, dated as of 
December 7, 2005 (incorporated by reference to Exhibit 4(a) to registrant’s 
Current Report on Form 8-K filed on December 13, 2005, File No. 1-3274).

First Supplemental Indenture, dated as of December 12, 2017 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
December 12, 2017, File No. 1-03274).

Second Supplemental Indenture, dated as of November 26, 2019 (incorporated 
by reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on 
November 26, 2019, File No. 1-3274).

E-12

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IVExhibit
Number

4.9

4.10

4.10.1

4.10.2

4.11

4.11.1

4.11.2

4.11.3

4.11.4

4.11.5

4.11.6

4.12

4.12.1

4.12.2

Indenture (for [Subordinated] Debt Securities) (open ended) (incorporated by 
reference to Exhibit 4(a)(2) Duke Energy Florida, Inc.’s (formerly Florida Power 
Corporation (d/b/a Progress Energy Florida, Inc.)) Registration Statement on 
Form S-3 filed on November 18, 2008, File No. 333-155418).

Original Indenture (Unsecured Debt Securities) between Duke Energy Ohio, Inc. 
(formerly The Cincinnati Gas & Electric Company) and The Bank of New York 
Mellon Trust Company, N.A., as Successor Trustee, dated as of May 15, 1995 
(incorporated by reference to Exhibit 3 to registrant’s Form 8-A filed on July 27, 
1995, File No. 1-1232).

First Supplemental Indenture, dated as of June 1, 1995 (incorporated by 
reference to Exhibit 4 B to Duke Energy Ohio, Inc.’s (formerly The Cincinnati 
Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended 
June 30, 1995, filed on August 11, 1995, File No. 1-1232).

Seventh Supplemental Indenture, dated as of June 15, 2003 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati 
Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2003, filed on August 13, 2003, File No. 1-1232).

Original Indenture (First Mortgage Bonds) between Duke Energy Ohio, Inc. 
(formerly The Cincinnati Gas & Electric Company) and The Bank of New York 
Mellon Trust Company, N.A., as Successor Trustee, dated as of August 1, 1936 
(incorporated by reference to an exhibit to registrant’s Registration Statement 
No. 2-2374).

Fortieth Supplemental Indenture, dated as of March 23, 2009 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati 
Gas & Electric Company) Current Report on Form 8-K filed on March 24, 2009, 
File No. 1-1232).

Forty-second Supplemental Indenture, dated as of September 6, 2013 
(incorporated by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly 
The Cincinnati Gas & Electric Company) Current Report on Form 8-K filed on 
September 6, 2013, File No. 1-1232).

Forty-fourth Supplemental Indenture, dated as of June 23, 2016 (incorporated 
by reference to Exhibit 4.1 registrant’s Current Report on Form 8-K filed on 
June 23, 2016, File No. 1-1232). 

Forty-fifth Supplemental Indenture, dated as of March 27, 2017 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
March 27,2017, File No. 1-01232).

Forty-sixth Supplemental Indenture, dated as of January 8, 2019 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
January 8, 2019, File No. 1-1232). 

Forty-seventh Supplemental Indenture, dated as of May 21, 2020 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
May 21, 2020, File No. 1-1232). 

Indenture between Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and 
The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, 
dated as of November 15, 1996 (incorporated by reference to Exhibit 4(v) to 
the Cinergy Corp. Form 10-K for the year ended December 31, 1996, filed on 
March 27, 1997, File No. 1-11377).

Third Supplemental Indenture, dated as of March 15, 1998 (incorporated by 
reference to Exhibit 4-w to Cinergy Corp.’s Annual Report on Form 10-K for the 
year ended December 31, 1997, filed on March 27, 1998, File No. 1-11377).

Eighth Supplemental Indenture, dated as of September 23, 2003 (incorporated 
by reference to Exhibit 4.2 to Duke Energy Indiana, LLC’s (formerly PSI Energy, 
Inc.) Quarterly Report on Form 10-Q for the quarter ended September 30, 2003, 
filed on November 13, 2003, File No. 1-3543).

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

E-13

PART IVExhibit
Number

4.12.3

4.12.4

4.13

4.13.1

4.13.2

4.13.3

4.13.4

4.13.5

4.13.6

4.13.7

4.13.8

4.13.9

4.13.10

4.13.11

4.13.12

4.13.13

4.13.14

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Ninth Supplemental Indenture, dated as of October 21, 2005 (incorporated by 
reference to Exhibit 4.7.3 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) 
Registration Statement on Form S-3 filed on September 29, 2010,  
File No. 333-169633).

Tenth Supplemental Indenture, dated as of June 9, 2006 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) 
Current Report on Form 8-K filed on June 15, 2006, File No. 1-3543).

Original Indenture (First Mortgage Bonds) between Duke Energy Indiana, LLC 
(formerly PSI Energy, Inc.) and Deutsche Bank National Trust Company, as 
Successor Trustee, dated as of September 1, 1939, (filed as an exhibit in 
File No. 70-258).

Tenth Supplemental Indenture, dated as of July 1, 1952, (filed as an exhibit in 
File No. 2-9687).

Twenty-third Supplemental Indenture, dated as of January 1, 1977, (filed as an 
exhibit in File No. 2-57828).

Twenty-fifth Supplemental Indenture, dated as of September 1, 1978, (filed as 
an exhibit in File No. 2-62543).

Twenty-sixth Supplemental Indenture, dated as of September 1, 1978, (filed as 
an exhibit in File No. 2-62543).

Thirtieth Supplemental Indenture, dated as of August 1, 1980, (filed as an 
exhibit in File No. 2-68562).

Thirty-fifth Supplemental Indenture, dated as of March 30, 1984, (filed as 
an exhibit to registrant’s Annual Report on Form 10-K for the year ended 
December 31, 1984, File No. 1-3543).

Forty-sixth Supplemental Indenture, dated as of June 1, 1990, (filed as 
an exhibit to registrant’s Annual Report on Form 10-K for the year ended 
December 31, 1991, File No. 1-3543).

Forty-seventh Supplemental Indenture, dated as of July 15, 1991, (filed as 
an exhibit to registrant’s Annual Report on Form 10-K for the year ended 
December 31, 1991, File No. 1-3543).

Forty-eighth Supplemental Indenture, dated as of July 15, 1992, (filed as 
an exhibit to registrant’s Annual Report on Form 10-K for the year ended 
December 31, 1992, File No. 1-3543).

Fifty-second Supplemental Indenture, dated as of April 30, 1999 (incorporated 
by reference to Exhibit 4 to Duke Energy Indiana, LLC’s (formerly PSI Energy, 
Inc.) Quarterly Report on Form 10-Q for the quarter ended March 31, 1999, 
filed on May 13, 1999, File No. 1-3543).

Fifty-seventh Supplemental Indenture, dated as of August 21, 2008 
(incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s  
(formerly PSI Energy, Inc.) Current Report Form 8-K filed on August 21, 2008, 
File No. 1-3543).

Fifty-eighth Supplemental Indenture, dated as of December 19, 2008 
(incorporated by reference to Exhibit 4.8.12 to Duke Energy Indiana, LLC’s 
(formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on 
September 29, 2010, File No. 333-169633-02).

Fifty-ninth Supplemental Indenture, dated as of March 23, 2009 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, 
Inc.) Current Report on Form 8-K filed on March 24, 2009, File No. 1-3543).

Sixtieth Supplemental Indenture, dated as of June 1, 2009 (incorporated 
by reference to Exhibit 4.8.14 to Duke Energy Indiana, LLC’s (formerly PSI 
Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, 
File No. 333-169633-02).

E-14

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IVDuke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Exhibit
Number

4.13.15

4.13.16

4.13.17

4.13.18

4.13.19

4.13.20

4.13.21

Sixty-first Supplemental Indenture, dated as of October 1, 2009 (incorporated 
by reference to Exhibit 4.8.15 to Duke Energy Indiana, LLC’s (formerly PSI 
Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, 
File No. 333-169633-02).

Sixty-second Supplemental Indenture, dated as of July 9, 2010 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) 
Current Report on Form 8-K filed on July 9, 2010, File No. 1-3543). 

Sixty-third Supplemental Indenture, dated as of September 23, 2010 
(incorporated by reference to Exhibit 4.8.17 to Duke Energy Indiana, LLC’s 
(formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on 
September 29, 2010, File No. 333-169633-02).

Sixty-fourth Supplemental Indenture, dated as of December 1, 2011 
(incorporated by reference to Exhibit 4(d)(2)(xviii) to Duke Energy Indiana, 
LLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on 
September 30, 2013, File No. 333-191462-03).

Sixty-fifth Supplemental Indenture, dated as of March 15, 2012 (incorporated 
by reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, 
Inc.) Current Report on Form 8-K filed on March 15, 2012, File No. 1-3543).

Sixty-sixth Supplemental Indenture, dated as of July 11, 2013 (incorporated by 
reference to Exhibit 4.1 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) 
Current Report on Form 8-K filed on July 11, 2013, File No. 1-3543).

Sixty-seventh Supplemental Indenture, dated as of January 1, 2016, between 
Duke Energy Indiana, Inc. and Deutsche Bank National Trust Company, as 
Trustee, supplementing and amending the Indenture of Mortgage or Deed 
of Trust, dated September 1, 1939, between Duke Energy Indiana, Inc. and 
Deutsche Bank National Trust Company, as Trustee (incorporated by reference 
to Exhibit 4.2 to Duke Energy Indiana, LLC’s (formerly PSI Energy, Inc.) Quarterly 
Report on Form 10-Q for the quarter ended March 31, 2016, filed on May 5, 
2016, File No. 1-3543).

4.13.22

4.13.23

4.13.24

Sixty-eighth Supplemental Indenture, dated as of May 12, 2016 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
May 12, 2016, File No. 1-3543).

Sixty-ninth Supplemental Indenture, dated as of September 27, 2019 
(incorporated by reference to Exhibit 4.1 to registrant’s Current Report on Form 
8-K filed on September 27, 2019, File No. 1-3543).

Seventieth Supplemental Indenture, dated as of March 12, 2020 (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
March 12, 2020, File No. 1-3543). 

4.14

4.15

4.16

4.17

Repayment Agreement between Duke Energy Ohio, Inc. (formerly The Cincinnati 
Gas & Electric Company) and The Dayton Power and Light Company, dated as of 
December 23, 1992, (filed with registrant’s Annual Report on Form 10-K for the 
year ended December 31, 1992, File No. 1-1232).

Unsecured Promissory Note between Duke Energy Indiana, LLC (formerly PSI 
Energy, Inc.) and the Rural Utilities Service, dated as of October 14, 1998 
(incorporated by reference to Exhibit 4 to registrant’s Annual Report on Form 
10-K for the year ended December 31, 1998, filed on March 8, 1999,  
File No. 1-3543).

6.302% Subordinated Note between Duke Energy Indiana, LLC (formerly PSI 
Energy, Inc.) and Cinergy Corp., dated as of February 5, 2003 (incorporated by 
reference to Exhibit 4(yyy) to registrant’s Quarterly Report on Form 10-Q for the 
quarter ended March 31, 2003, filed on May 12,2003, File No. 1-3543).

6.403% Subordinated Note between Duke Energy Indiana, LLC (formerly PSI 
Energy, Inc.) and Cinergy Corp., dated as of February 5, 2003 (incorporated by 
reference to Exhibit 4(zzz) to registrant’s Quarterly Report on Form 10-Q for the 
quarter ended March 31, 2003, filed on May 12, 2003, File No. 1-3543).

E-15

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IVExhibit
Number

4.18

4.19

4.20

4.21

4.22

4.23

4.24

4.25

4.26

4.26.1

4.26.2

4.26.3

4.26.4

4.26.5

4.26.6

Contingent Value Obligation Agreement between Progress Energy, Inc. (formerly 
CP&L Energy, Inc.) and The Chase Manhattan Bank, as Trustee, dated as of 
November 30, 2000 (incorporated by reference to Exhibit 4.1 to registrant’s 
Current Report on Form 8-K filed on December 1, 2000, File No. 1-3382).

Form of 3.47% Series A Senior Notes due July 16, 2027 (incorporated by 
reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
March 29, 2012, File No. 1-06196).

Form of 3.57% Series B Senior Notes due July 16, 2027 (incorporated by 
reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on 
March 29, 2012, File No. 1-06196).

Form of 4.65% Senior Notes due 2043 (incorporated by reference to Exhibit 4.2 
to registrant’s Current Report on Form 8-K filed on August 1, 2013,  
File No. 1-06196).

Form of 4.10% Senior Notes due 2034 (incorporated by reference to Exhibit 4.2 
to registrant’s Current Report on Form 8-K filed on September 18, 2014,  
File No. 1-06196).

Form of 3.60% Senior Notes due 2025 (incorporated by reference to Exhibit 4.2 
to registrant’s Current Report on Form 8-K filed on September 14, 2015,  
File No. 1-06196).

Form of 3.64% Senior Notes due 2046 (incorporated by reference to Exhibit 4.2 
to registrant’s Current Report on Form 8-K filed on July 28, 2016,  
File No. 1-06196).

Form of 4.24% Series B Senior Notes due June 6, 2021 (incorporated by 
reference to Exhibit 4.2 to registrant’s Current Report on Form 8-K filed on 
May 12, 2011, File No. 1-06196).

Indenture, dated as of April 1, 1993, between Piedmont and The Bank of New 
York Mellon Trust Company, N.A. (as successor to Citibank, N.A.), Trustee 
(incorporated by reference to Exhibit 4.1 to registrant’s Registration Statement 
on Form S-3 filed on May 16, 1995, File No. 33-59369).

Second Supplemental Indenture, dated as of June 15, 2003, between Piedmont 
and Citibank, N.A., Trustee (incorporated by reference to Exhibit 4.3 to 
registrant’s Registration Statement on Form S-3 filed on June 19, 2003,  
File No. 333-106268).

Fourth Supplemental Indenture, dated as of May 6, 2011, between Piedmont 
Natural Gas Company, Inc. and The Bank of New York Mellon Trust Company, N.A., 
as trustee (incorporated by reference to Exhibit 4.2 to registrant’s Registration 
Statement on Form S-3-ASR filed on July 7, 2011, File No. 333-175386).

Fifth Supplemental Indenture, dated August 1, 2013, between the Company and 
The Bank of New York Mellon Trust Company, N.A. (incorporated by reference to 
Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on August 1, 2013, 
File No. 1-06196).

Sixth Supplemental Indenture, dated September 18, 2014, between the 
Company and The Bank of New York Mellon Trust Company, N.A. (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
September 18, 2014, File No. 1-06196).

Seventh Supplemental Indenture, dated September 14, 2015, between the 
Company and The Bank of New York Mellon Trust Company, N.A. (incorporated 
by reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
September 14, 2015, File No. 1-06196).

Eighth Supplemental Indenture, dated July 28, 2016, between the Company and 
The Bank of New York Mellon Trust Company, N.A. (incorporated by reference 
to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on July 28, 2016, 
File No. 1-06196).

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

X

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

E-16

PART IVExhibit
Number

4.26.7

4.26.8

4.27

4.28

4.29

4.30

4.31

4.32

4.33

4.34

10.1

10.2

10.3

10.4

10.5

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Ninth Supplemental Indenture, dated as of May 24, 2019 (incorporated by 
reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
May 24, 2019, File No. 1-6196). 

Tenth Supplemental Indenture, dated as of May 21, 2020 (incorporated by 
reference to Exhibit 4.1 to registrant’s Current Report on Form 8-K filed on 
May 21, 2020, File No. 1-6196). 

Medium-Term Note, Series A, dated as of October 6, 1993 (incorporated by 
reference to Exhibit 4.8 to registrant’s Annual Report on Form 10-K for the year 
ended October 31, 1993, File No. 1-06196).

Medium-Term Note, Series A, dated as of September 19, 1994 (incorporated by 
reference to Exhibit 4.9 to registrant’s Annual Report on Form 10-K for the year 
ended October 31, 1994, File No. 1-06196). 

Form of 6% Medium-Term Note, Series E, dated as of December 19, 2003 
(incorporated by reference to Exhibit 99.2 to registrant’s Current Report on Form 
8-K filed on December 23, 2003, File No. 1-06196).

Form of Master Global Note (incorporated by reference to Exhibit 4.4 to 
registrant’s Registration Statement on Form S-3 filed on April 30, 1997,  
File No. 333-26161).

Pricing Supplement of Medium-Term Notes, Series B, dated October 3, 1995 
(incorporated by reference to Exhibit 4.10 to registrant’s Annual Report on Form 
10-K for the year ended October 31, 1995, File No. 1-06196). 

Pricing Supplement of Medium-Term Notes, Series B, dated October 4, 1996 
(incorporated by reference to Exhibit 4.11 to registrant’s Annual Report on Form 
10-K for the year ended October 31, 1996, File No. 1-06196).

Pricing Supplement of Medium-Term Notes, Series C, dated September 15, 1999 
(incorporated by reference to Rule 424(b)(3) Pricing Supplement to Form S-3 
Registration Statement Nos. 33-59369 and 333-26161).

Agreement of Resignation, Appointment and Acceptance dated as of March 29, 
2007, by and among Piedmont Natural Gas Company, Inc., Citibank, N.A., and 
The Bank of New York Trust Company, N.A. (incorporated by reference to Exhibit 
4.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended April 30, 
2007, filed on June 8, 2007, File No. 1-06196).

Agreements with Piedmont Electric Membership Corporation, Rutherford Electric 
Membership Corporation and Blue Ridge Electric Membership Corporation 
(incorporated by reference to Exhibit 10.15 to Duke Energy Corporation’s 
Quarterly Report on Form 10-Q for the quarter ended June 30, 2006, filed on 
August 9, 2006, File No. 1-32853).

Asset Purchase Agreement between Saluda River Electric Cooperative, Inc., as 
Seller, and Duke Energy Carolinas, LLC, as Purchaser, dated as of December 20, 
2006 (incorporated by reference to Exhibit 10.1 to registrant’s Current Report on 
Form 8-K filed on December 27, 2006, File No. 1-4928).

Settlement between Duke Energy Corporation, Duke Energy Carolinas, LLC 
and the U.S. Department of Justice resolving Duke Energy’s used nuclear fuel 
litigation against the U.S. Department of Energy, dated as of March 6, 2007 
(incorporated by reference to Item 8.01 to registrant’s Current Report on Form 
8-K filed on March 12, 2007, File No. 1-4928).

Letter Agreement between Georgia Natural Gas Company and Piedmont Energy 
Company dated February 12, 2016 (incorporated by reference to Exhibit 10.1 
to registrant’s Current Report on Form 8-K filed on February 18, 2016,  
File No. 1-06196).

Assignment of Membership Interests dated as of October 3, 2016 between 
Piedmont ACP Company, LLC and Dominion Atlantic Coast Pipeline, LLC, 
(incorporated by reference to Exhibit 10.1 to registrant’s Current Report on Form 
8-K filed on October 7, 2016, File No. 1-06196).

E-17

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IVDuke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

Exhibit
Number

10.6

10.7

10.8

10.9

10.10

10.11**

10.12

10.13**

10.14

Agreements between Piedmont Electric Membership Corporation, Rutherford 
Electric Membership Corporation and Blue Ridge Electric Membership 
Corporation (incorporated by reference to Exhibit 10.15 to Duke Energy 
Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 
2006, filed on August 9, 2006, File No. 1-32853).

Conveyance and Assignment Agreement, dated as of October 3, 2016, by 
and between Piedmont Energy Company and Georgia Natural Gas Company 
(incorporated by reference to Exhibit 10.1 to registrant’s Current Report on 
Form 8-K filed on October 3, 2016, File No. 1-06196).

Engineering, Procurement and Construction Management Agreement between 
Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and Bechtel Power 
Corporation, dated as of December 15, 2008 (incorporated by reference to 
Exhibit 10.16 to registrant’s Annual Report on Form 10-K for the year ended 
December 31, 2008, filed on March 13, 2009, File No. 1-3543). (Portions of the 
exhibit have been omitted and filed separately with the Securities and Exchange 
Commission pursuant to a request for confidential treatment pursuant to Rule 
24b-2 under the Securities Exchange Act of 1934, as amended.)

Formation and Sale Agreement between Duke Ventures, LLC, Crescent 
Resources, LLC, Morgan Stanley Real Estate Fund V U.S. L.P., Morgan Stanley 
Real Estate Fund V Special U.S., L.P., Morgan Stanley Real Estate Investors 
V U.S., L.P., MSP Real Estate Fund V, L.P., and Morgan Stanley Strategic 
Investments, Inc., dated as of September 7, 2006 (incorporated by reference 
to Exhibit 10.3 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for 
the quarter ended September 30, 2006, filed on November 9, 2006,  
File No. 1-32853).

Operating Agreement of Pioneer Transmission, LLC (incorporated by reference to 
Exhibit 10.1 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the 
quarter ended September 30, 2008, filed on November 7, 2008,  
File No. 1-32853).

Amended and Restated Duke Energy Corporation Directors’ Saving Plan, 
dated as of January 1, 2014 (incorporated by reference to Exhibit 10.32 to 
Duke Energy Corporation’s Annual Report on Form 10-K for the year ended 
December 31, 2013, filed on February 28, 2014, File No. 1-32853).

Engineering, Procurement and Construction Management Agreement between 
Duke Energy Indiana, LLC (formerly PSI Energy, Inc.) and Bechtel Power 
Corporation, dated as of December 15, 2008 (incorporated by reference to Item 
1.01 to registrant’s Current Report on Form 8-K filed on December 19, 2008, 
File Nos. 1-32853 and 1-3543). (Portions of the exhibit have been omitted and 
filed separately with the Securities and Exchange Commission pursuant to a 
request for confidential treatment pursuant to Rule 24b-2 under the Securities 
Exchange Act of 1934, as amended.)

Duke Energy Corporation Executive Severance Plan (incorporated by reference 
to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on January 13, 
2011, File No. 1-32853).

$6,000,000,000 Five-Year Credit Agreement between Duke Energy Corporation, 
Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, 
Duke Energy Kentucky, Inc., Carolina Power and Light Company d/b/a Duke 
Energy Progress, Inc. and Florida Power Corporation, d/b/a Duke Energy Florida, 
Inc., as Borrowers, the lenders listed therein, Wells Fargo Bank, National 
Association, as Administrative Agent, Bank of America, N.A. and The Royal Bank 
of Scotland plc, as Co-Syndication Agents and Bank of China, New York Branch, 
Barclays Bank PLC, Citibank, N.A., Credit Suisse AG, Cayman Islands Branch, 
Industrial and Commercial Bank of China Limited, New York Branch, JPMorgan 
Chase Bank, N.A. and UBS Securities LLC, as Co-Documentation Agents, 
dated as of November 18, 2011 (incorporated by reference to Exhibit 10.1 to 
registrant’s Current Report on Form 8-K filed on November 25, 2011,  
File Nos. 1-32853, 1-4928, 1-1232 and 1-3543).

E-18

PART IVExhibit
Number

10.14.1

10.14.2

10.14.3

10.14.4

10.14.5

Amendment No. 1 and Consent between Duke Energy Corporation, Duke Energy 
Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, Duke Energy 
Kentucky, Inc., Duke Energy Progress, Inc., Duke Energy Florida, Inc., and Wells 
Fargo Bank, National Association, dated as of December 18, 2013 (incorporated 
by reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on 
December 23, 2013, File Nos. 1-32853, 1-4928, 1-3382, 1-3274, 1-1232 and 
1-3543).

Amendment No. 2 and Consent between Duke Energy Corporation, Duke Energy 
Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, LLC, Duke Energy 
Kentucky, Inc., Duke Energy Progress, Inc., and Duke Energy Florida, Inc., the 
Lenders party hereto, the issuing Lenders party hereto, Wells Fargo Bank, 
National Association, as Administrative Agent and Swingline Lender, dated as 
of January 30, 2015 (incorporated by reference to Exhibit 10.1 of registrant’s 
Current Report on Form 8-K filed on February 5, 2015, File Nos. 1-32853, 
1-4928, 1-1232, 1-3543, 1-3382 and 1-3274).

Amendment No. 3 and Consent, dated as of March 16, 2017, among the 
registrants, the Lenders party thereto, the issuing Lenders party thereto, and 
Wells Fargo Bank, National Association, as Administrative Agent and Swingline 
Lender (incorporated by reference to Exhibit 10.1 to registrants’ Current Report 
on Form 8-K filed on March 17, 2017, File Nos. 1-32853, 1-04928, 1-03382, 
1-03274, 1-01232, 1-03543, 1-06196).

Amendment No. 4 and Consent, dated as of March 18, 2019, among Duke 
Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke 
Energy Indiana, LLC, Duke Energy Kentucky, Inc., Duke Energy Progress, LLC, 
Duke Energy Florida, LLC, and Piedmont Natural Gas Company, Inc., the Lenders 
party thereto, the Issuing Lenders party thereto, and Wells Fargo Bank, National 
Association, as Administrative Agent and Swingline Lender (incorporated by 
reference to Exhibit 10.1 to registrants’ Current Report on Form 8-K filed on 
March 21, 2019, File Nos. 1-32853. 1-4928, 1-3382, 1-3274, 1-1232, 1-3543, 
1-6196).

Amendment No. 5 and Consent, dated as of March 16, 2020, among 
registrants’, the Lenders party thereto, the Issuing Lenders party thereto, 
and Wells Fargo Bank, N.A., as Administrative Agent, and Swingline Lender 
(incorporated by reference to Exhibit 10.1 to registrants’ Current Report on 
Form 8-K filed on March 17, 2020, File Nos. 1-32853, 1-4928, 1-3382, 1-3274, 
1-1232, 1-3543, 1-6196). 

10.15**

Duke Energy Corporation 2010 Long-Term Incentive Plan (incorporated by 
reference to Appendix A to registrant’s Form DEF 14A filed on March 22, 2010, 
File No. 1-32853).

10.15.1** Amendment to Duke Energy Corporation 2010 Long-Term Incentive Plan 

(incorporated by reference to Exhibit 10.3 to registrant’s Quarterly Report on 
Form 10-Q for the quarter ended June 30, 2012, filed on August 8, 2012,  
File No. 1-32853).

10.16**

Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by 
reference to Appendix C to registrant’s DEF 14A filed on March 26, 2015,  
File No. 1-32853).

10.16.1** Amendment to Duke Energy Corporation 2015 Long-Term Incentive Plan 

(incorporated by reference to Exhibit 10.16.1 to Duke Energy Corporation’s 
Annual Report on Form 10-K for the year ended December 31, 2018, filed on 
February 28, 2019, File No. 1-32853).

10.17**

10.18**

Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 10.4 
to registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 
2017 filed on May 9, 2017, File No. 1-32853).

Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 10.24 
to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended 
December 31, 2017, filed on February 21, 2018, File No. 1-32853). 

E-19

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

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

PART IVExhibit
Number

10.19**

10.20**

10.21**

10.22**

10.23**

10.24**

10.25

10.26

10.27

10.28

10.29**

10.30**

Performance-Based Retention Award Agreement (incorporated by reference to 
Exhibit 10.2 to registrant’s Quarterly Report on Form 10-Q for the quarter ended 
March 31, 2017, filed on May 9, 2017, File No. 1-32853).

Performance Award Agreement (incorporated by reference to Exhibit 10.3 to 
registrant’s Quarterly Report on Form 10-Q for the quarter ended March 31, 
2017, filed on May 9, 2017, File No. 1-32853).

Performance Award Agreement (incorporated by reference to Exhibit 10.27 
to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended 
December 31, 2017, filed on February 21, 2018, File No. 1-32853). 

Performance Share Award Agreement (incorporated by reference to Exhibit 10.2 
to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter 
ended March 31, 2019, filed on May 9, 2019, File No. 1-32853). 

Performance Award Agreement (incorporated by reference to Exhibit 10.4 to 
Duke Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended 
March 31, 2020, filed on May 12, 2020, File No. 1-32853).

Restricted Stock Unit Award Agreement (incorporated by reference to Exhibit 
10.3 to Duke Energy Corporation’s Quarterly Report on Form 10-Q for the 
quarter ended March 31, 2019, filed on May 9, 2019, File No. 1-32853).

Settlement Agreement between Duke Energy Corporation, the North Carolina 
Utilities Commission Staff and the North Carolina Public Staff, dated as of 
November 28, 2012 (incorporated by reference to Exhibit 10.1 to registrant’s 
Current Report on Form 8-K filed on November 29, 2012, File No. 1-32853).

Settlement Agreement between Duke Energy Corporation and the North Carolina 
Attorney General, dated as of December 3, 2012 (incorporated by reference Item 
7.01 to registrant’s Current Report on Form 8-K filed on December 3, 2012,  
File No. 1-32853).

Settlement Agreement between Duke Energy Carolinas, LLC, Duke Energy 
Progress, LLC, and The North Carolina Department of Environmental Quality, 
dated as of December 31, 2019 (incorporated by reference to Exhibit 10.1 to 
registrants’ Current Report on Form 8-K filed on January 2, 2020, File Nos. 
1-4928, 1-3382).

Duke Energy Carolinas Summary of Partial Settlement in North Carolina Rate 
Case (incorporated by reference to Exhibit 99.1 to registrant’s Current Report on 
Form 8-K filed on March 26, 2020, File Nos. 1-32853, 1-4928, 1-3382).

Form of Change-in-Control Agreement (incorporated by reference to Exhibit 
10.58 to Duke Energy Corporation’s Annual Report on Form 10-K for the year 
ended December 31, 2012, filed on March 1, 2013, File No. 1-32853).

Amended and Restated Duke Energy Corporation Executive Cash Balance 
Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.52 
to Duke Energy Corporation’s Annual Report on Form 10-K for the year ended 
December 31, 2013, filed on February 28, 2014, File No. 1-32852).

10.30.1** Amended and Restated Duke Energy Corporation Executive Cash Balance Plan, 

dated as of September 30, 2020 (incorporated by reference to Exhibit 10.1 to 
registrant’s Current Report on Form 8-K filed on September 25, 2020,  
File No. 1-32853).

10.31

Purchase, Construction and Ownership Agreement, dated as of July 30, 
1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light 
Company) and North Carolina Municipal Power Agency Number 3 and Exhibits, 
together with resolution, dated as of December 16, 1981, changing name 
to North Carolina Eastern Municipal Power Agency, amending letter, dated 
as of February 18, 1982, and amendment, dated as of February 24, 1982 
(incorporated by reference to Exhibit 10(a) to registrant’s File No. 33-25560).

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

E-20

PART IVDuke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

Exhibit
Number

10.32

10.33

10.34

10.35**

10.36

10.37

Operating and Fuel Agreement, dated as of July 30, 1981, between Duke Energy 
Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina 
Municipal Power Agency Number 3 and Exhibits, together with resolution, dated 
as of December 16, 1981, changing name to North Carolina Eastern Municipal 
Power Agency, amending letters, dated as of August 21, 1981, and December 
15, 1981, and amendment, dated as of February 24, 1982 (incorporated by 
reference to Exhibit 10(b) to registrant’s File No. 33-25560).

Power Coordination Agreement, dated as of July 30, 1981, between Duke Energy 
Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina 
Municipal Power Agency Number 3 and Exhibits, together with resolution, dated 
as of December 16, 1981, changing name to North Carolina Eastern Municipal 
Power Agency and amending letter, dated as of January 29, 1982 (incorporated 
by reference to Exhibit 10(c) to registrant’s File No. 33-25560).

Amendment, dated as of December 16, 1982, to Purchase, Construction 
and Ownership Agreement, dated as of July 30, 1981, between Duke Energy 
Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina 
Eastern Municipal Power Agency (incorporated by reference to Exhibit 10(d) to 
registrant’s File No. 33-25560).

Progress Energy, Inc. 2007 Equity Incentive Plan (incorporated by reference to 
Exhibit C to registrant’s Form DEF 14A filed on March 30, 2007,  
File No. 1-15929).

Precedent and Related Agreements between Duke Energy Florida, Inc. 
(formerly Florida Power Corporation d/b/a Progress Energy Florida, Inc. 
(“PEF”)), Southern Natural Gas Company, Florida Gas Transmission Company 
(“FGT”), and BG LNG Services, LLC (“BG”), including: a) Precedent Agreement 
between Southern Natural Gas Company and PEF, dated as of December 2, 
2004; b) Gas Sale and Purchase Contract between BG and PEF, dated as of 
December 1, 2004; c) Interim Firm Transportation Service Agreement by and 
between FGT and PEF, dated as of December 2, 2004; d) Letter Agreement 
between FGT and PEF, dated as of December 2, 2004, and Firm Transportation 
Service Agreement between FGT and PEF to be entered into upon satisfaction 
of certain conditions precedent; e) Discount Agreement between FGT and 
PEF, dated as of December 2, 2004; f) Amendment to Gas Sale and Purchase 
Contract between BG and PEF, dated as of January 28, 2005; and g) Letter 
Agreement between FGT and PEF, dated as of January 31, 2005 (incorporated by 
reference to Exhibit 10.1 to registrant’s Current Report on Form 8-K/A filed on 
March 15, 2005, File Nos. 1-15929 and 1-3274). (Portions of the exhibit have 
been omitted and filed separately with the Securities and Exchange Commission 
pursuant to a request for confidential treatment pursuant to Rule 24b-2 under 
the Securities Exchange Act of 1934, as amended.)

Engineering, Procurement and Construction Agreement between Duke Energy 
Florida, Inc. (formerly Florida Power Corporation d/b/a/ Progress Energy Florida, 
Inc.), as owner, and a consortium consisting of Westinghouse Electric Company 
LLC and Stone & Webster, Inc., as contractor, for a two-unit AP1000 Nuclear 
Power Plant, dated as of December 31, 2008 (incorporated by reference to 
Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on March 2, 2009, 
File Nos. 1-15929 and 1-3274). (Portions of the exhibit have been omitted and 
filed separately with the Securities and Exchange Commission pursuant to a 
request for confidential treatment pursuant to Rule 24b-2 under the Securities 
Exchange Act of 1934, as amended.)

10.38**

Employment Agreement between Duke Energy Corporation and Lynn J. Good, 
dated as of June 17, 2013 (incorporated by reference to Exhibit 10.1 to Duke 
Energy Corporation’s Current Report on Form 8-K filed on June 18, 2013,  
File No. 1-32853).

10.38.1** Amendment to Employment Agreement between Duke Energy Corporation and 
Lynn J. Good, dated as of June 25, 2015 (incorporated by reference to Exhibit 
10.1 to Duke Energy Corporation’s Current Report on Form 8-K filed on June 29, 
2015, File No. 1-32853). 

X

X

E-21

PART IVDuke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Exhibit
Number

10.39**

10.40**

10.41**

Duke Energy Corporation Executive Short-Term Incentive Plan, dated as of 
February 25, 2013 (incorporated by reference to Exhibit 10.1 to Duke Energy 
Corporation’s Current Report on Form 8-K filed on May 7, 2013, File No. 1-32853).

Duke Energy Corporation 2017 Director Compensation Program Summary 
(incorporated by reference to Exhibit 10.3 to Duke Energy Corporation’s 
Quarterly Report on Form 10-Q for the quarter ended June 30, 2017 filed on 
August 3, 2017, File No. 1-32853).

Amended and Restated Duke Energy Corporation Executive Savings Plan, 
dated as of January 1, 2014 (incorporated by reference to Exhibit 10.82 to 
Duke Energy Corporation’s Annual Report on Form 10-K for the year ended 
December 31, 2013, filed on February 28, 2014, File No. 1-32853).

10.41.1** Amendment to Duke Energy Corporation Executive Savings Plan, dated 
as of January 1, 2014 (incorporated by reference to Exhibit 10.1 to Duke 
Energy Corporation’s Quarterly Report on Form 10-Q for the quarter ended 
September 30, 2017, filed on November 3, 2017, File No. 1-32853).

10.41.2** Amendment to Duke Energy Corporation Executive Savings Plan, dated as of 

October 1, 2020 (incorporated by reference to Exhibit 10.2 to Duke Energy 
Corporation’s Current Report on Form 8-K filed on September 25, 2020,  
File No. 1-32853).

10.42

10.43

10.44

10.45

10.46

10.47

10.48

Agreement between Duke Energy SAM, LLC, Duke Energy Ohio, Inc., Duke Energy 
Commercial Enterprise, Inc. and Dynegy Resource I, LLC, dated as of August 21, 
2014 (incorporated by reference to Exhibit 10.61 to Duke Energy Corporation’s 
Annual Report on Form 10-K for the year ended December 31, 2014, filed on 
March 2, 2015, File No. 1-32853). 

Asset Purchase Agreement between Duke Energy Progress, Inc. and North 
Carolina Eastern Municipal Power Agency, dated as of September 5, 2014 
(incorporated by reference to Exhibit 10.62 to Duke Energy Corporation’s 
Annual Report on Form 10-K for the year ended December 31, 2014, filed on 
March 2, 2015, File No. 1-32853).

Accelerated Stock Repurchase Program executed by Goldman, Sachs & Co., 
and JPMorgan Chase Bank, N.A. on April 6, 2015, under an agreement with 
Duke Energy Corporation (incorporated by reference to Exhibit 10.1 to Duke 
Energy Corporation’s Current Report on Form 8-K filed on April 6, 2015, 
File No. 1-32853). 

Plea Agreement between Duke Energy Corporation and the Court of the Eastern 
District of North Carolina in connection with the May 14, 2015, Dan River 
Grand Jury Settlement (incorporated by reference to Exhibit 10.3 to Duke Energy 
Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 
2015, filed on August 7, 2015, File No. 1-32853). 

Plea Agreement between Duke Energy Corporation and the Court of the Eastern 
District of North Carolina in connection with the May 14, 2015, Dan River 
Grand Jury Settlement (incorporated by reference to Exhibit 10.4 to Duke Energy 
Corporation’s Quarterly Report on Form 10-Q for the quarter ended June 30, 
2015, filed on August 7, 2015, File No. 1-32853).

Purchase and Sale Agreement by and among Duke Energy International Group 
S.à.r.l., Duke Energy International Brazil Holdings S.à.r.l. and China Three Gorges 
(Luxembourg) Energy S.à.r.l., dated as of October 10, 2016 (incorporated by 
reference to Exhibit 2.1 to registrant’s Current Report on Form 8-K filed on 
October 13, 2016, File No. 1-32853). 

Purchase and Sale Agreement by and among Duke Energy Brazil Holdings 
II, C.V., Duke Energy International Uruguay Investments SRL, Duke Energy 
International Group S.à.r.l., Duke Energy International España Holdings SL, 
Duke Energy International Investments No. 2 Ltd., ISQ Enerlam Aggregator, L.P., 
and Enerlam (UK) Holdings Ltd., dated as of October 10, 2016 (incorporated 
by reference to Exhibit 2.2. to registrant’s Current Report on Form 8-K filed on 
October 13, 2016, File No. 1-32853). 

E-22

X

X

X

X

X

X

X

X

X

X

X

X

X

X

PART IVExhibit
Number

10.49**

10.50**

10.51**

Amended and Restated Employment Agreement, dated May 25, 2012, between 
Piedmont Natural Gas Company, Inc. and Franklin H. Yoho (incorporated by 
reference to Exhibits 10.1 and 10.2 to Piedmont Natural Gas Company, Inc.’s 
Quarterly Report on Form 10-Q for the quarter ended July 31, 2012, filed on 
September 7, 2012, File No. 1-06196).

Severance Agreements with Thomas E. Skains and Franklin H. Yoho, dated 
September 4, 2007 (incorporated by reference to Exhibits 10.2 and 10.2a to 
Piedmont Natural Gas Company, Inc’s Quarterly Report on Form 10-Q for the 
quarter ended July 31, 2007, filed on September 7, 2007, File No. 1-06196). 

Piedmont Natural Gas Company, Inc. Incentive Compensation Plan 
(incorporated by reference to Exhibit 10.64 to registrant’s Annual Report on 
Form 10-K for the year ended December 31, 2016, filed on February 24, 2017, 
File No. 1-32853).

10.51.1** First Amendment to Piedmont Natural Gas Company, Inc. Incentive 

Compensation Plan (incorporated by reference to Exhibit 4.2 to registrant’s 
Registration Statement on Form S-8 filed on October 3, 2016, File No. 1-32853).

10.52**

10.53**

10.54**

10.55**

10.56

10.57

10.58

Waiver of Certain Rights to Terminate for Good Reason between Duke Energy 
Corporation and Franklin H. Yoho (incorporated by reference to Exhibit 10.66 
to registrant’s Annual Report on Form 10-K for the year ended December 31, 
2016, filed on February 24, 2017, File No. 1-32853).

Notice of Non-Renewal of Employment Agreement between Duke Energy 
Corporation and Franklin H. Yoho (incorporated by reference to Exhibit 10.67 
to registrant’s Annual Report on Form 10-K for the year ended December 31, 
2016, filed on February 24, 2017, File No. 1-32853). 

Retention Award Agreement, dated as of October 24, 2015, between Duke 
Energy Corporation and Franklin H. Yoho (incorporated by reference to 
Exhibit 10.68 to registrant’s Annual Report on Form 10-K for the year ended 
December 31, 2016, filed on February 24, 2017, File No. 1-32853). 

Consulting Agreement, dated as of October 4, 2019, between Duke Energy 
Corporation and Franklin H. Yoho (incorporated by reference to Exhibit 10.54 to 
registrant’s Annual Report of Form 10-K for the year ended December 31, 2019, 
filed on February 20, 2020, File No. 1-32853).

$1,000,000,000 Credit Agreement, dated as of June 14, 2017, among Duke 
Energy Corporation, the lenders listed therein, The Bank of Nova Scotia, as 
Administrative Agent, PNC Bank, National Association, Sumitomo Mitsui 
Banking Corporation and TD Bank, N.A., as C0-Syndication Agents, and Bank 
of China, New York Branch, BNP Paribas, Santander Bank, N.A. and U.S. Bank 
National Association, as Co-Documentation Agents (incorporated by reference 
to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on June 14, 
2017, File No. 1-32853).

$1,000,000,000 Credit Agreement, dated as of May 15, 2019, among Duke 
Energy Corporation, the Lenders party thereto, The Bank of Nova Scotia, as 
Administrative Agent, PNC Bank, National Association, Sumitomo Mitsui 
Banking Corporation and TD Bank, N.A., as Co-Syndication Agents, and Bank 
of China, New York Branch, BNP Paribas, Santander Bank, N.A., and U.S. Bank, 
National Association, as Co-Documentation Agents (incorporated by reference 
to Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on May 16, 
2019, File No. 1-32853). 

$1.5 billion 364-Day Term Loan Credit Agreement, dated as of March 19, 
2020, among the registrant, as Borrower, certain Lenders from time to time 
parties thereto, and PNC Bank, N.A., as Administrative Agent, and registrant’s 
borrowing of the remaining $500 million under registrant’s existing $1 billion 
revolving credit facility on March 17, 2020 (incorporated by reference to 
Exhibit 10.1 to registrant’s Current Report on Form 8-K filed on March 19, 2020, 
File No. 1-32853). 

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

E-23

PART IVExhibit
Number

10.58.1

10.59

10.60

10.60.1

10.60.2

10.61

10.62

10.63

10.64

10.65

Duke
Energy
Carolinas

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

Duke
Energy

X

X

X

X

X

X

X

X

X

Joinder Agreement, dated as of March 27, 2020, by and among, the registrant, 
each of the Incremental Lenders listed therein, and PNC Bank, N.A., as 
Administrative Agent (incorporated by reference to Exhibit 10.2.1 to registrant’s 
Quarterly Report on Form 10-Q for the quarter ended March 31, 2020, filed on 
May 12, 2020, File No. 1-32853).

Note Purchase Agreement, dated as of May 6, 2011, among Piedmont Natural 
Gas Company, Inc. and the Purchasers party thereto (incorporated by reference 
to Exhibit 10 to registrant’s Current Report on Form 8-K filed on May 12, 2011, 
File No. 1-06196).

Amended and Restated Limited Liability Company Agreement of Constitution 
Pipeline Company, LLC dated April 9, 2012, by and among Williams Partners 
Operating LLC and Cabot Pipeline Holdings LLC (incorporated by reference to 
Exhibit 10.1 to registrant’s Quarterly Report on Form 10-Q for the quarter ended 
January 31, 2013, filed on March 6, 2013, File No. 1-06196).

First Amendment to Amended and Restated Limited Liability Company 
Agreement of Constitution Pipeline Company, LLC, dated as of November 9, 
2012, by and among Constitution Pipeline Company, LLC, Williams Partners 
Operating LLC, Cabot Pipeline Holdings LLC, and Piedmont Constitution 
Pipeline Company, LLC (incorporated by reference to Exhibit 10.2 to registrant’s 
Quarterly Report on Form 10-Q for the quarter ended January 31, 2013, filed on 
March 6, 2013, File No. 1-06196).

Second Amendment to Amended and Restated Limited Liability Company 
Agreement of Constitution Pipeline Company, LLC, dated as of May 29, 2013, 
by and among Constitution Pipeline Company, LLC, Williams Partners Operating 
LLC, Cabot Pipeline Holdings LLC, Piedmont Constitution Pipeline Company, LLC, 
and Capitol Energy Ventures Corp. (incorporated by reference to Exhibit 99.1 
to registrant’s Current Report on Form 8-K filed on September 4, 2013, 
File No. 1-06196).

Second Amended and Restated Limited Liability Company Agreement of 
SouthStar Energy Services LLC, dated as of September 1, 2013, by and between 
Georgia Natural Gas Company and Piedmont Energy Company (incorporated by 
reference to Exhibit 10.39 to registrant’s Annual Report on Form 10-K for the 
year ended October 31, 2013, filed on December 23, 2013, File No. 1-06196).

Limited Liability Company Agreement of Atlantic Coast Pipeline, LLC, dated as of 
September 2, 2014, by and between Dominion Atlantic Coast Pipeline, LLC, Duke 
Energy ACP, LLC, Piedmont ACP Company, LLC, and Maple Enterprise Holdings, 
Inc. (incorporated by reference to Exhibit 10.35 to registrant’s Annual Report on 
Form 10-K for the year ended October 31, 2014, filed on December 23, 2014, 
File No. 1-06196).

Engineering, Procurement and Construction Agreement between Duke Energy 
Business Services, LLC, as agent for and on behalf of Piedmont Natural Gas 
Company Inc. and Matrix Service, Inc., dated as of April 30, 2019 (incorporated 
by reference to Exhibit 10.1 to registrant’s Quarterly Report on Form 10-Q for 
the quarter ended June 30, 2019, filed on August 6, 2019, File No. 1-06196). 
(Portions of the exhibit have been omitted for confidentiality.) 

Decommissioning Services Agreement between Duke Energy Florida, LLC, and 
ADP CR3, LLC, and ADP SF1, LLC (incorporated by reference to Exhibit 10.3 to 
registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019, 
filed on August 6, 2019, File No. 2-5293). (Portions of the exhibit have been 
omitted for confidentiality.) 

Form of Forward Sale Agreement (incorporated by reference to Exhibit 10.1 
to registrant’s Current Report on Form 8-K filed on November 8, 2019, 
File No. 1-32853).

X

E-24

PART IVExhibit
Number

10.66

10.67

Lease Agreement dated as of December 23, 2019, between the registrant and 
CGA 525 South Tryon TIC 1, LLC, a Delaware limited liability company, CGA 525 
South Tryon TIC 2, LLC, a Delaware limited liability company, and CK 525 South 
Tryon TIC, LLC, a Delaware limited liability company (incorporated by reference 
to Exhibit 10.64 to registrant’s Annual Report on Form 10-K for the year ended 
December 31, 2019, filed on February 20, 2020, File No. 1-4928).

Construction Agency Agreement dated as of December 23, 2019, between the 
registrant and CGA 525 South Tryon TIC 1, LLC, a Delaware limited liability 
company, CGA 525 South Tryon TIC 2, LLC, a Delaware limited liability company, 
and CK 525 South Tryon TIC, LLC, a Delaware limited liability company 
(incorporated by reference to Exhibit 10.65 to registrant’s Annual Report on 
Form 10-K for the year ended December 31, 2019, filed on February 20, 2020, 
File No. 1-4928).

*21

List of Subsidiaries

*23.1.1

Consent of Independent Registered Public Accounting Firm.

*23.1.2

Consent of Independent Registered Public Accounting Firm.

*23.1.3

Consent of Independent Registered Public Accounting Firm.

*23.1.4

Consent of Independent Registered Public Accounting Firm.

*23.1.5

Consent of Independent Registered Public Accounting Firm.

*23.1.6

Consent of Independent Registered Public Accounting Firm.

*23.1.7

Consent of Independent Registered Public Accounting Firm.

*24.1

*24.2

*31.1.1

*31.1.2

*31.1.3

*31.1.4

*31.1.5

*31.1.6

*31.1.7

*31.1.8

*31.2.1

*31.2.2

Power of attorney authorizing Lynn J. Good and others to sign the Annual Report 
on behalf of the registrant and certain of its directors and officers.

Certified copy of resolution of the Board of Directors of the registrant authorizing 
power of attorney.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Executive Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

E-25

PART IV 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

*31.2.3

*31.2.4

*31.2.5

*31.2.6

*31.2.7

*31.2.8

*32.1.1

*32.1.2

*32.1.3

*32.1.4

*32.1.5

*32.1.6

*32.1.7

*32.1.8

*32.2.1

*32.2.2

*32.2.3

*32.2.4

*32.2.5

*32.2.6

*32.2.7

*32.2.8

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification of the Chief Financial Officer Pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

X

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

X

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

*101.INS

XBRL Instance Document (this does not appear in the Interactive Data File 
because it’s XBRL tags are embedded within the Inline XBRL document).

*101.SCH

XBRL Taxonomy Extension Schema Document

X

X

E-26

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

X

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

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

PART IVExhibit
Number

*101.CAL

XBRL Taxonomy Calculation Linkbase Document

*101.LAB

XBRL Taxonomy Label Linkbase Document

*101.PRE

XBRL Taxonomy Presentation Linkbase Document

*101.DEF

XBRL Taxonomy Definition Linkbase Document

*104

Cover Page Interactive Data File (formatted in Inline XBRL and contained in 
Exhibit 101).

Duke
Energy
Carolinas

Duke
Energy

Progress
Energy

Duke
Energy
Progress

Duke
Energy
Florida

Duke
Energy
Ohio

Duke
Energy
Indiana

Piedmont

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

The total amount of securities of each respective registrant or its subsidiaries authorized under any instrument with respect to long-term debt not filed as an exhibit 
does not exceed 10% of the total assets of such registrant and its subsidiaries on a consolidated basis. Each registrant agrees, upon request of the SEC, to furnish 
copies of any or all of such instruments to it.

E-27

PART IVSIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed 

on their behalf by the undersigned, thereunto duly authorized.

Date: February 25, 2021

DUKE ENERGY CORPORATION
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

registrant and in the capacities and on the date indicated. 

By: 

/s/ LYNN J. GOOD
Lynn J. Good
Chair, President and Chief Executive Officer

(i) 

/s/ LYNN J. GOOD

Lynn J. Good

Chair, President and Chief Executive Officer (Principal Executive Officer and Director)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors: 

Michael G. Browning* 

Annette K. Clayton* 

Theodore F. Craver, Jr.* 

Robert M. Davis* 

Daniel R. DiMicco* 

John T. Herron*

William E. Kennard*

E. Marie McKee*

Marya M. Rose*

Thomas E. Skains*

Nicholas C. Fanandakis* 

William E. Webster, Jr.*

Lynn J. Good* 

Steven K. Young, by signing his name hereto, does hereby sign this document on behalf of the registrant and on behalf of each of the above-named persons 

previously indicated by asterisk (*) pursuant to a power of attorney duly executed by the registrant and such persons, filed with the Securities and Exchange 
Commission as an exhibit hereto.

By: 

/s/ STEVEN K. YOUNG
Attorney-In-Fact

Date: February 25, 2021

E-28

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Date: February 25, 2021

DUKE ENERGY CAROLINAS, LLC
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

By: 

/s/ LYNN J. GOOD
Lynn J. Good
Chief Executive Officer

registrant and in the capacities and on the date indicated.

(i) 

/s/ LYNN J. GOOD

Lynn J. Good 

Chief Executive Officer (Principal Executive Officer)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young 

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs 

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors:

/s/ LYNN J. GOOD

Lynn J. Good

/s/ DHIAA M. JAMIL

Dhiaa M. Jamil

/s/ JULIA S. JANSON

Julia S. Janson

Date: February 25, 2021

E-29

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Date: February 25, 2021

PROGRESS ENERGY, INC.
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

By: 

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

registrant and in the capacities and on the date indicated.

(i) 

/s/ LYNN J. GOOD

Lynn J. Good

Chief Executive Officer (Principal Executive Officer)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors:

/s/ KODWO GHARTEY-TAGOE

Kodwo Ghartey-Tagoe

/s/ LYNN J. GOOD

Lynn J. Good

Date: February 25, 2021

E-30

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Date: February 25, 2021

DUKE ENERGY PROGRESS, LLC
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

By: 

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

registrant and in the capacities and on the date indicated.

(i) 

/s/ LYNN J. GOOD

Lynn J. Good

Chief Executive Officer (Principal Executive Officer)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors:

/s/ DOUGLAS F ESAMANN

Douglas F Esamann

/s/ KODWO GHARTEY-TAGOE

Kodwo Ghartey-Tagoe

/s/ LYNN J. GOOD

Lynn J. Good

/s/ DHIAA M. JAMIL

Dhiaa M. Jamil

/s/ JULIA S. JANSON

Julia S. Janson

Date: February 25, 2021

E-31

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Date: February 25, 2021

DUKE ENERGY FLORIDA, LLC
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

By: 

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

registrant and in the capacities and on the date indicated.

(i) 

/s/ LYNN J. GOOD

Lynn J. Good

Chief Executive Officer (Principal Executive Officer)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors:

/s/ DOUGLAS F ESAMANN

Douglas F Esamann

/s/ KODWO GHARTEY-TAGOE

Kodwo Ghartey-Tagoe

/s/ LYNN J. GOOD

Lynn J. Good

/s/ DHIAA M. JAMIL

Dhiaa M. Jamil

/s/ JULIA S. JANSON

Julia S. Janson

Date: February 25, 2021

E-32

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Date: February 25, 2021

DUKE ENERGY OHIO, INC.
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

By: 

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

registrant and in the capacities and on the date indicated.

(i) 

/s/ LYNN J. GOOD

Lynn J. Good

Chief Executive Officer (Principal Executive Officer)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors:

/s/ DOUGLAS F ESAMANN

Douglas F Esamann

/s/ LYNN J. GOOD

Lynn J. Good

/s/ DHIAA M. JAMIL

Dhiaa M. Jamil

Date: February 25, 2021

E-33

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Date: February 25, 2021

DUKE ENERGY INDIANA, LLC
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

By: 

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

registrant and in the capacities and on the date indicated.

(i) 

/s/ LYNN J. GOOD

Lynn J. Good

Chief Executive Officer (Principal Executive Officer)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors:

/s/ DOUGLAS F ESAMANN

Douglas F Esamann

/s/ KELLEY A. KARN

Kelley A. Karn

/s/ STAN PINEGAR

Stan Pinegar

Date: February 25, 2021

E-34

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Date: February 25, 2021

PIEDMONT NATURAL GAS COMPANY, INC.
(Registrant)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the 

By: 

/s/ LYNN J. GOOD

Lynn J. Good
Chief Executive Officer

registrant and in the capacities and on the date indicated.

(i) 

/s/ LYNN J. GOOD

Lynn J. Good

Chief Executive Officer (Principal Executive Officer)

(ii) 

/s/ STEVEN K. YOUNG

Steven K. Young

Executive Vice President and Chief Financial Officer (Principal Financial Officer)

(iii) 

/s/ DWIGHT L. JACOBS

Dwight L. Jacobs

Senior Vice President, Chief Accounting Officer, Tax and Controller (Principal Accounting Officer)

(iv)  Directors:

/s/ DOUGLAS F ESAMANN

Douglas F Esamann

/s/ LYNN J. GOOD

Lynn J. Good

/s/ DHIAA M. JAMIL

Dhiaa M. Jamil

Date: February 25, 2021

E-35

PART IV 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
©2021 Duke Energy Corporation 203196 3/21