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DPL Inc.

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FY2010 Annual Report · DPL Inc.
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Highlights

Market value per share at December 31 

Earnings (millions) 

Earnings per share of common stock – Basic: 

Earnings per share of common stock – Diluted: 

$ 

$ 

$ 

$ 

Average shares outstanding (millions)

  Basic 

  Diluted 

2010 

25.71 

290.3 

2.51 

2.50 

115.6 

116.1 

$ 

$ 

$ 

$ 

2009 

27.60 

229.1 

2.03 

2.01 

112.9 

114.2 

$ 

$ 

$ 

$ 

2008

22.84

244.5

2.22

2.12

110.2

115.4

Net cash provided by operating activities (millions) 

Long term debt including current portion (millions) 

$ 

464.2 

$  1,324.1 

$ 

524.7 

$  1,324.1 

$ 

361.2

$  1,551.8

Interest expense (millions) 

Construction additions (millions) 

Dividends paid per share 

System peak load – MW (calendar year) 

Average retail price per kWh (calendar year) (cents/kWh) 

$ 

$ 

$ 

70.6 

151 

1.21 

2,909 

10.04 

$ 

$ 

$ 

83.0 

145 

1.14 

2,909 

9.01 

$ 

$ 

$ 

90.7

228

1.10

3,027

8.13

DPL Generating Units

Corporate Profi le 

M I C H I G AN

Detroit

Toledo

E

I

R

E

E

K

A

L

Cleveland


Montpelier

D P & L
S E R V I C E  A R E A

O H I O

Indianapolis

A

N

A

I

D

N

I

Tait



Hutchings

Dayton

Columbus

Conesville

O hio Riv er

A

I

N

A

V

L

Y

S
N

N

E

P

h
g
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u
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P

DPL was named one of Forbes’ “100 Most Trustworthy 

Companies” for the second consecutive year in 2010. 

DPL’s principal subsidiaries include The Dayton Power 

and Light Company (DP&L); DPL Energy, LLC (DPLE); and 

DPL Energy Resources, Inc. (DPLER). DP&L, a regulated 

electric utility, provides service to over 500,000 retail 

customers in West Central Ohio; DPLE engages in the 

operation of merchant peaking generation facilities; and 

DPLER is a competitive retail electric supplier in Ohio, 

selling to major industrial and commercial customers. 

DPL, through its subsidiaries, owns approximately 

3,800 megawatts of generation capacity, of which 2,800 

megawatts are low cost coal-fi red units and 1,000 

megawatts are natural gas and diesel peaking units. 

Further information can be found at www.dplinc.com.

Miami Fort

East Bend

Cincinnati

Beckjord
Zimmer

Stuart

Killen

Louisville

Frankfort

About the Cover Artist

Charleston

Dayton artist James Pate created the cover for this year’s annual 

report. After reading the company’s history and reviewing hundreds 

K E NT U C K Y

W E S T  V IR G I NI A

 Natural Gas Peaking Generation Units
● Wholly & Commonly Owned Coal-Fired Generating Plants

of photographs, he began to create the collage 

that highlights important points in the history of 

Dayton Power and Light. 

A native of Cincinnati, Pate attended the 

School for the Creative and Performing Arts in 

Cincinnati, and earned a scholarship to the Art 

Academy of Cincinnati. He has resided in Dayton since 1997. 

To encourage students to stay in school, Pate serves as an 

educational art consultant to the Dayton Public Schools. His art 

has been exhibited in galleries throughout the U.S., including the 

Museum of Science and Industry in Chicago and the National 

Civil Rights Museum in Memphis. Earlier this year, he was part of a 

group show called, “Made in America: An African-American Fine Art 

Perspective” in Sacramento.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Chairman’s Letter

Powering the Miami Valley for 100 Years

In 2011 we’re celebrating a century of service to our 
customers in the Miami Valley. The company has 
a long legacy of being dedicated to the betterment of 
the communities it serves. In this report you can 
read about those who preceded us in building the 
company for 100 years into what it is today. It is a story 
of forethought and hard work, as well as a focus on per-
formance and customer service.Today, we work every 
day to live up to that legacy.

In the 1923 DP&L Annual Report, then-president 
Frank Tait said, “The Dayton Power and Light Company 

is an Ohio institution operating through-
out the southwestern part of Ohio, and 
the greater part of its outstanding capital 
stock is owned by Ohio people. Our 
company, rather than being owned by 
a few individuals, is owned by 2,565 
shareholders, of which number only 

42 own more than 100 shares each.”

Today, there are 19,875 shareholders of DPL Inc. 

throughout the world. Approximately one half are 
large, institutional shareholders and the other half are 
individual investors. 

Strong Performance and Profi le

The region’s economy began to show signs of recovery 
in 2010 and our earnings per share also increased 
during the year. In 2010 our diluted earnings were 
$2.50 per share, compared to $2.01 per share for the 
same period in 2009. Earlier this year we reaffi rmed our 
2011 earnings guidance of $2.30 to $2.55 per share.  
During the latter part of 2010, DPL’s board of 
directors approved two measures to return value to our 
shareholders. In October, we announced a new three-
year, $200 million stock repurchase plan. Under this 
plan, DPL may repurchase its common stock 
from time to time in the open market through private 
transactions or otherwise, on such terms and conditions 
as the company deems appropriate. Although the plan 
will run through the end of 2013, it may be modifi ed 
or terminated at any time without notice. To date, 
approximately 2 million shares have been repurchased 
for $52 million, or an average price of $25.75 per share. 

In December, we announced a 10% dividend rate 

increase to an annualized rate of $1.33 per share. 
This marks the sixth consecutive year that the company 
has increased the dividend rate. Going forward, the 
board of directors will continue to evaluate the dividend 
annually, or more frequently.

Our decisions on the share 
repurchase plan and the 
dividend rate increase were a 
result of the company’s strong 
fi nancial profi le, solid 
liquidity position, investment 
grade debt ratings across 
each of the major rating agen-
cies, as well as the board’s 
confi dence in the company’s 
future outlook.  

Glenn E. Harder

External Recognition of DPL

I am pleased to report that DPL again received 
investment-grade credit ratings from the major rating 
services (ratings current at time of printing). 

• Fitch Ratings:  A-, stable outlook as of October 2010

• Moody’s Investors Service:  Baa1, stable outlook as of June 2010

• Standard & Poor’s Corp.:  BBB+, stable outlook as of April 2010 

In August 2010, DPL was again named one of 

Forbes’ “100 Most Trustworthy Companies” for 
the second consecutive year. The company’s values, 
integrity and trustworthiness are refl ected in our 
placement on the list. The company’s core values serve 
as the foundation for its long-term success.

Public Utilities Fortnightly ranked DPL Inc. as the 

best energy company in the country in 2010 for the 
second year in a row. The Fortnightly annual survey 
evaluates the fi nancial results of the past four years for 
84 energy companies. 

As we look toward the next 100 years and work to 

live up to the DPL legacy, I see a demanding future with 
a changing regulatory environment, new technology 
and a recovering economy. I have confi dence in the 
company’s employees and executive team to deliver as 
they have in our recent challenging times.

Your board of directors is very proud to be 
associated with DPL and to be a small part of its next 
100 years. We sincerely appreciate your continued 
support and investment in DPL.

Glenn E. Harder
Chairman
March 1, 2011

1

BB

President & CEO’s Letter

2010: A Solid Year for DPL  

to support business growth in Preble 

    2011: 100 Years of DP&L

County. The facility is strategically 

located near Silfex, Inc. to ensure 

As we begin to celebrate our 100 year 

a constant fl ow of power, which is 

anniversary as a company, the last 

critical to their operations. This facility 

few years have made us think back 

in Eaton, Ohio is the largest silicon 

to those who navigated the company 

growing facility in the world. And, 

through the decades before us. In our 

all of our customers in Preble County 

industry, there are some “timeless” 

will benefi t from the new substation 

fundamentals that were as important 

when it begins operation in the fi rst 

to our region and our company in the 

quarter of 2011. Additionally, the $2 

1930s as they are today. In 2011 and 

million Caesar Creek substation was 

beyond, these fundamental elements 

also built in 2010, serving Caesar 

will continue to be areas of focus 

Creek, Clarksville and the rural parts of 

and help support the future economic 

Clinton and Warren counties, providing 

growth of the Miami Valley:

enhanced reliability while supporting 

•  Safety

•  Reliable Service

future growth. 

A very important economic 

•  Generation Performance

engine for the Dayton region and Ohio 

Continued Investment in 
Our Business and Our Communities

is Wright-Patterson Air Force Base 

(WPAFB). We have been supporting 

the base from its beginnings. Back in 

1915, DP&L made a large investment 

DPL continues to invest in the Miami 

in building the Millers Ford power 

Valley with our eyes on the future. For 

plant to support growth in the region. 

example, to pave the way for growth, 

This $7.7 million investment began 

DP&L began building two new substa-

to pay dividends for the region at 

tions in 2010. Substation technology 

the conclusion of World War I, when 

has evolved considerably over the past 

institutions began to consider the 

100 years. New controls and monitor-

Dayton area as a possible location to 

ing equipment provide information on 

build or to relocate. 

equipment health (temperatures, 

One such organization was the 

voltages, status of breakers), ensure 

U.S. Army Air Corps whose leaders 

voltage stability and enable faster 

believed Dayton was an ideal location 

service restoration. The evolution from 

for an airbase, in part due to the 

electromechanical relays to digital 

existing facilities at McCook Field, 

relays provides additional system 

which were located north of Dayton. 

protection, control and, ultimately, 

A decisive factor in the military’s 

improved reliability. 

decision was DP&L’s assurance that it 

DP&L recently invested $3.5 

million dollars in a new electric 

substation to increase reliability and 

Paul M. Barbas

2

 
would be able to supply the base 

Reliable Customer Service

Addressing Ohio’s Energy Goals

with the needed electrical power. 

McCook was later relocated to Wright 

Customer service, safety and reliabil-

DPL is actively working to comply 

Field, which eventually became the 

ity are the three primary concerns of 

with Ohio’s energy legislation, which 

Wright-Patterson Air Force Base we 

DP&L’s Service Operations team. 

requires that 12.5% of Ohio’s energy 

know today.

In 2010, DP&L’s operational perform-

needs be generated by renewable 

WPAFB is now the state’s largest, 

ance once again exceeded all 

resources by 2025. To be able to meet 

single-site employer. During 2009 

Public Utilities Commission of Ohio 

this aggressive goal, we are evaluat-

we entered into a contract to own, 

reliability standards. 

ing the viability of solar resources 

operate and maintain the assets for 

Also last year, DP&L launched a 

and alternative fuel sources, such as 

the distribution and transmission of 

new Business Call Center dedicated 

biomass. For example, at our Killen 

electricity at WPAFB. After a one-

solely to addressing the complex 

Station we have been testing technolo-

year transition, in March 2011, DP&L 

needs of its business customers. 

gies for co-fi ring biomass with coal. 

assumed ownership of the electrical 

A select number of experienced 

Additionally, during the fi rst 

assets at the base and now operates, 

representatives received additional 

quarter of 2010, we completed 

maintains and repairs the equipment. 

training to provide enhanced support 

construction of our Yankee Solar 

We will be working alongside WPAFB 

for this service. The company also 

Array, which came online at the end of 

to understand their growth plans and 

purchased an online energy reference 

March. It was the fi rst solar installation 

system requirements to be able to 

library for business customers 

built by a utility in the state. The 1.1 

support the base in fulfi lling its many 

that provides detailed information 

megawatt array consists of 9,120 solar 

critical missions.

on how to reduce energy costs for 

panels covering 7 acres in southern 

In the interest of strengthening the 

a variety of industries. The Business 

Montgomery County. The array 

level of service to the communities we 

Savings Library is available on 

features a visitor’s learning kiosk that is 

serve, we revitalized and expanded 

www.dpandl.com.

open daily for self-guided visits.

our Community Ambassador program 

As a refl ection of our continuing 

Another important component of 

last year. We now have 33 employee 

focus upon customer service, DP&L’s 

Ohio’s energy legislation calls for the 

ambassadors in the program, 

customer satisfaction scores, as meas-

reduction of electricity consumption 

covering 37 local governments. 

ured by J.D. Power and Associates, 

by 22% by the end of 2025. Starting 

These employees formally represent 

increased across our customer base. 

in 2009 and throughout 2010, DP&L 

DP&L in the municipality in which 

For business customers, the score 

launched energy effi ciency programs 

they live. The program provides the 

rose nearly 30 points. In the residential 

for business and residential customers 

communities with a single point of 

customer satisfaction study, DP&L was 

to help meet this goal. Our initial 

contact with DP&L and enhances our 

one of 15 “most improved brands” in 

calculations show that these programs 

relationships with local governments. 

the U.S. in 2010. 

The ambassadors attend council 

meetings, meet with government and 

community leaders on a regular basis 

and often serve on community boards. 

The employees have an inherent 

interest in helping the communities to 

be successful, as it is where they live 

and raise their families.

have saved enough energy to power 

24,000 homes for a year. The energy 

effi ciency initiatives include lighting 

discounts, appliance recycling, 

HVAC rebates and cooling tune-

ups, as well as unique business and 

government rebates.  

continued

3

 
 
 
 
 
Planning for Evolving Technology

throughout the country to further our 

Many locations organized gift 

understanding of the system impacts. 

collections for different charities during 

Through our 100 years, DPL has 

The goal of the company’s plug-in 

the holidays, and held a number of 

constantly sought improvement 

electric vehicle research that began 

fundraising events throughout the year 

through the use of technology. In the 

in 2009 is to ensure that customers’ 

for local non-profi t organizations. 

1920s, DP&L’s fl eet helped make 

electrical service from DP&L will 

Our partnerships with 

automotive history by serving as a 

support their charging needs as 

organizations like the United Way 

proving ground for the development 

electric vehicles become available 

strengthen our communities. As DPL 

of “anti-knock” Ethyl gasoline. DP&L 

in our region.

played an important role in helping 

employees have done for 100 years, 

we’re working to provide a brighter 

General Motors Research Labs 

Lighting the Way for 100 Years

future for our next generation. 

experiment with the new fuel. DP&L’s 

I’d like to thank our employees, 

operating and maintenance costs for 

Since its earliest days, DPL and its 

the executive team and our board of 

its transportation fl eet were signifi cantly 

employees have been integral to 

directors for contributing to DPL’s 

reduced with the introduction of the 

helping improve and maintain the 

solid year in 2010. I’m proud that we 

new anti-knock gasoline.

quality of life in the communities 

are continuing the performance 

Later in the 1970s and early 

we serve. And in our challenging 

and community involvement that has 

1980s, DP&L’s Transportation team, 

economic climate, DPL employees 

been the company’s standard for 

led by Jack Hounshell who is now 

stepped up their support in the 

the past 100 years.

in his 42nd year with the company, 

areas where they live and work. In 

purchased six electric cars (Ford 

2010, employees pledged more 

and Dodge) and converted 20 other 

than $250,000 to the United Way. 

vehicles to compressed natural 

Combined with $200,000 provided 

gas for the fl eet. 

by the DP&L Foundation, DPL’s 

Paul M. Barbas

The company continues to look 

total yearly United Way contribution 

President & Chief Executive Offi cer

to the future and at our customers’ 

was more than $450,000. 

March 1, 2011

evolving needs. History repeated itself 

In addition to the more than 

in 2010, as DP&L took delivery of an 

$1 million the DPL Foundation 

all-electric car to study its charging 

provides to a variety of civic, cultural 

characteristics and to prepare 

and youth organizations, hundreds 

for the use of electric vehicles in our 

of DPL employees volunteer their time 

service territory in the near future. 

and effort to a variety of important 

DP&L has additional electric vehicles 

causes. From serving on school 

and charging stations on order. The 

boards to coaching youth sports and 

company is also participating in the 

mentoring at-risk children and teens, 

testing of a variety of electric vehicles 

the company strongly supports and 

encourages employee volunteer 

efforts throughout our region.

The entire company participated 

in the annual Food for Friends 

campaign, donating nearly 7,000 

pounds of food at the end of 2010. 

4

Lighting the Way 
for 100 Years 

The Origins of 
Dayton Power and Light

The Hills and Dales 
Railway Company became 
The Dayton Power and 
Light Company in the 
spring of 1911, but the 
roots of DP&L date back 

to 1848 when the Dayton Gas Light 
and Coke Company was chartered, 
primarily to illuminate city streets to 
keep citizens safe.

Dayton Gas Light generated gas 

from the combustion of hog grease 
obtained from nearby slaughter houses. 
The vapor was pumped through 
distribution lines to street lights, busi-
nesses and eventually to homes. In 
1851 coal was substituted for grease.

Thomas Edison’s 
First Incandescent Lamp

In the 1880s, after 
Thomas Edison 
demonstrated the 
fi rst incandescent 
lamp in 1879, 
electricity came 
to Dayton via the 
Brush Electric 
Light and Motor 
Company.

In a tiny 
building near 

what was East First and Madison 
Streets, where Delco Building No. 20 
was later erected, the Brush company 
installed a 23-lamp Fuller-Wood arc 

machine. This same building was also 
the fi rst cash register factory.    

In 1883 Brush became the Dayton 

Electric Light Company and Dayton 
was one of the fi rst cities in Ohio to light 
its streets with electricity.

Electric service fi rst comes to Dayton with a power 

plant and electric street lighting operated by the 

Dayton Electric Light Company

Frank M. Tait Provides Direction 
for the Next 53 Years 

An apprentice of 
Thomas Edison, 
Frank Tait made his 
start in the utility 
industry in 1893 at 
19 years old. 
Edison’s 
technology was 
rapidly accepted 
in the U.S. and 

demand for electricity skyrocketed with 
the develop ment of effi cient motors and 
labor-saving devices for the home, store 
and factory. Many factories abandoned 
their own electric plants and instead 
purchased service provided by 
DP&L. At the turn of the century the 
Dayton Electric Light Company’s profi ts 
were $32,600.

Meanwhile, Tait became a success 

in his home town of Catasauqua, 
Pennsylvania as a manager at the local 
gas and electric company. As a result, 
the New York electrical fi rm of Brady 
and Young hired Tait as an engineer. 
In 1904, Tait’s fi rst assignment was 
to come to Dayton to study the city’s 
electric light and power industry. His 
evaluation led his employer to purchase 
the Dayton Electric Light company.

A “heavy line” construction crew, with its 1910 

one-ton electric truck, extending lines on 

Cincinnati Pike. Driver is Harry Irwin; on the truck: 

Bob Matheny, Harry Thompson, Bill Dunigan, 

and Jimmy (last name unknown). Standing: Glen 

Leiberger, Roy Johnston and Frank Newman.

Following the acquisition and 
consolidation of several companies, 
Frank Tait was elected to the offi ce 
of president of DP&L on October 2, 
1911, an offi ce he held until he became 
chairman of the board in 1945. DP&L 
was now a regional utility, extending 
electric service to West Carrollton, 
Drexel, Trotwood, Ft. McKinley, Osborn, 
New Carlisle, Fairfi eld (now Fairborn) 
and Shiloh.

1913 Great Miami Valley Flood 
Demonstrates Resourcefulness 
of DP&L

April 3, 1913 
Dayton Daily News front page

Headline: 
Power and Light Reconstruction Fast

The Dayton Power and Light Company 
has shown by their work at the present
time to be very resourceful…

Both of the company’s power plants on 
Third and Fourth Streets were off line 
for three days while crews removed 14 
inches of mud from the fl oor and from 
the generating equipment. The water-
logged equipment had to be dried out 
and carefully cleaned before operations 
could be restored.

Electrical experts, along with 
mechanical and steam engineers from 
nearby cities and states rushed into 
Dayton to assist. Partial service was 
restored in a remarkably short period 
of time considering nearly all overhead 
transmission and distribution lines 
were destroyed.

With $100 million in damage and 

361 dead, Dayton was determined 
that a disaster of this magnitude would 
not bring the city to its knees again. 
Two individuals were instrumental in 
organizing a fl ood control program. 
Adam Schantz, vice president and 
a member of the DP&L board of 
directors, along with John Patterson of 
NCR established a campaign to raise 
$2 million for the prevention of future 
fl oods. Schantz made the fi rst donation 
of $160,000.

DP&L also played a large part 

in the Miami Conservancy Flood 
Control project by furnishing electric 
power for large excavating machines, 
gravel washers, concrete mixers, air 
compressors, locomotives, derricks, 
drills and shop equipment.

continued

5

 
 
 
 
New Millers Ford Station Consolidates 
and Centralizes Power Production 

In 1915, DP&L purchased 28 acres 
south of the city of Dayton, along 
the bank of the Great Miami River 
for $23,616. The following year 
construction began on land that is just 
west of I-75 between the exits of Edwin 
C. Moses Boulevard and Springboro 
Pike. Many in the city believed it was 
an overly ambitious undertaking. 
When completed, Millers Ford cost the 
company nearly $7.7 million.

When Millers Ford came online in 
1918, the company’s Third and Fourth 
Street stations were used for standby 
purposes and also served to produce 
steam, as demand for steam service 
had grown in the area.

June 1940.  Front Row: A.R. Smith, manager, 

Turbine Engineering, General Electric; 

O.H. Hutchings, VP DP&L; J.J. Kerr, VP Babock & 

Wilcox; C.H. Spiehler, mechanical engineer, 

DP&L. Second row: R.D. Gillespie, manager, 

Power Production, DP&L; Arthur Parker, mechanical 

engineer, Columbia Engineering Management; P.E. 

Murray, engineer, General Electric; E.R. Kirkpatrick, 

Turbine sales engineer, General Electric.

DP&L’s investment in Millers Ford paid 
off when at the conclusion of World War 
I in 1918, companies began to consider 
the Dayton area as a possible location 
to build or to relocate.  

Roaring 1920s Bring Prosperity

The roaring 1920s were healthy and 
prosperous for DP&L. The company 
practiced Frank Tait’s “public-be-
pleased” policy, serving customers 
from a variety of locations in downtown 
Dayton. DP&L began building a 
“service building” on the northeast 
corner of Monument and Foundry 
Streets in 1922. DP&L’s current service 
building is now located at 1900 Dryden 
Road. Then, as now, it is the operational 
“nerve center” of the company.

6

Kenneth C. Long, who had been 
vice president and associate general 
manager since 1936, was elected to 
the offi ce of president and general 
manager, succeeding Frank Tait. He 
had begun his career at DP&L in 1914 
as a meter reader. 

Long was a graduate of Steele 

High School in Dayton, class of 1910. 
He studied electrical engineering 
at Purdue University. He served his 
country in World War I as a commander 
and returned to his job at DP&L, where 
he had been converting industrial 
power plants to DP&L’s service.
Long left the employ of the 
company for four years, until he was 
convinced to return as a power 
engineer in 1929. He rose in the ranks 
due to his personal charm and native 
abilities. Long was admired by his 
associates and superiors.  

Said about Kenneth C. Long: “His ability to get at 

the heart of problems is based on certain personal 

characteristics. Being 

born with an intense 

curiosity, he has 

always shown a deep 

interest in people 

of all races and 

creeds. This dominant 

characteristic 

has led to a keen 

understanding and 

tolerance of men and 

women in all walks of life and forms the basis 

for his ability to handle situations with sound and 

prophetic judgment.”

In 1946, the board of directors 
deemed it “fi tting and proper” to name 
its current plant and future electric 
generating station after the two men 
who had spent their lifetimes pioneering 
and developing the electrical system 
that had become Dayton Power 
and Light. Millers Ford was renamed 
Frank M. Tait Station. 

The Millers Ford Power Plant was renamed 

Frank M. Tait Station on December 20, 1946.

DP&L’s “general offi ce” at 20 South Jefferson Street 

circa 1920s. On the side of the building a billboard 

reads: “Daylight Your Kitchen. 30 Days Free Trial.”

The service building was completed in 
1923 and was home to the company’s 
motor fl eet. Also in the 1920s the 
company looked into new ways to meet 
the future needs of its customers, such 
as interconnection with other utilities 
and “power pools” of reserve power. In 
1923 DP&L created a power pool 
with Cincinnati Gas and Electric. This 
was the fi rst joint venture of its kind 
for either company.

Consumption of Electric 
Power Declines Dramatically 
During Depression Era

The prosperity of the 1920s ended on 
October 29, 1929 with the beginning 
of a 10-year depression that caused a 
dramatic decline in the use of electricity 
by factories and all industries.

However, the demand for electricity 

by households remained high and 
buffered DP&L from the impact of 
the “Great Crash.” In what was the 
darkest year of the depression, 1931, 
the company began to promote rural 
electrifi cation, despite the high cost 
of constructing transmission lines. 
Once again, the company was investing 
for the future of the region. By 1943 
DP&L had constructed a total of 3,097 
miles of rural lines, serving nearly 
18,000 customers.

1940s Bring New Leader and Ultra-
Modern Electric Generating Station

DP&L, like all U.S. companies, devoted 
its energy to the war effort. Acquisitions 
and plant expansions were put on hold 
until the company’s war emergency 
priorities ended with peace in Europe 
and the Pacifi c.

With the end of World War II, Frank 

Tait sensed a managerial change 
was necessary. He relinquished his 
position and moved up to the position 
of chairman of the board. In 1946, 

 
Inside Tait Station circa 1940s

(left) and Willie Davis. 

A Tait Station turbine being repaired by Ted Wilks 

On February 7, 1958 Frank Tait 
relinquished his position as chairman 
of the board and accepted the title of 
“chairman emeritus.” Kenneth Long 
then became chairman and J.M. Stuart 
became president.

The power plant that would bear 
this new president’s name began 
construction in 1966 along the Ohio 
River near Aberdeen, Ohio. At the time 
of its dedication in 1970, Stuart Station 
was the largest coal-fi red facility in 
the world and cost over $390 million 
to build. The plant was built and is 
operated by DP&L. It is co-owned by 
the successor companies of Cincinnati 
Gas and Electric and Columbus and 
Southern Ohio Electric Company. DP&L 
built a 345,000 volt network to handle 
this new source of power, along with 11 
new substations. 

A new plant was to be called the 
O.H. Hutchings Station in honor of Tait’s 
associate who had been vice president 
for 26 years, and played a vital role in 
the development of the company as 
an employee for over 50 years: 
Orie H. Hutchings.

The location for Hutchings station 

was carefully chosen with consideration 
for accessibility to railroads, paved 
highways and river fl ow. The site 
selected was 12 miles south of Dayton 
on the west side of the Great Miami 
River on Chautauqua Road. 
Construction began in 1946. In 1948, 
before Hutchings died on July 30, he 
personally opened the throttle of the 
fi rst 60,000 kilowatt turbo-generator 
on July 12. He is remembered for his 
fi ne spirit of loyalty, fairness and high 
ideals of service.

At the time, Hutchings Station was 
one of the fi nest steam electric stations 
in the Eastern United States, and many 
engineers came to study its layout. 
By 1953 the sixth and last generator 
installed at Hutchings was placed 
into operation and the total cost of the 
station tallied up to $47 million. 

  The Dayton Power and Light motto:

To know what to do is wisdom;

  To know how to do it is skill;

  To do a thing as it should be done is service.

Growth, Expansion and Additional 
Generating Capacity

In 1953, DP&L’s total generating 
capacity was now 580,000 kilowatts 
and the company employed 2,300, of 
which 430 were women. On the payroll 
at the time were over 300 employees 
who had 25 years or more of service. 
That tradition continues today, as many 
of the company’s employees choose to 
stay with DP&L for a long career.

Decades of Change End in Renewed 
Commitment to Customers

During the late 1960s and the 
infl ationary 1970s the company installed 
a variety of pollution devices at all its 
plants. In 1971 the company was the 
fi rst in the nation to install dust collection 
devices at its power plants.

Starting with the energy crisis of 
1973, the mid-1970s were a diffi cult 
time for DP&L. Between 1973 and 1975 
the price of coal doubled, fi nancing 
rose 35%, environmental expenditures 
amounted to $28 million, construction 
costs spiraled from $163 per kilowatt to 
$238 per kilowatt and taxes rose from 
$26 to $42 million.

Also in the mid-1970s the Miami 

Valley endured another signifi cant, 
natural disaster.

The Xenia tornado that struck on 
April 3, 1974 was a massive F-5 that 
killed over 30 people, leveled half 
the town and left 10,000 homeless. 
It remains among one of the most 
destructive tornadoes in U.S. history. 
Three high-voltage transmission lines 
were knocked out by the storm. In all, 
DP&L suffered $1.7 million in repair and 
replacement costs of its equipment, 
but electricity was restored by April 5 
and gas service by April 8.

By 1975 DP&L had 403,000 

customers. Construction began on 
Killen Station in 1976, along the Ohio 
River, near Manchester, Ohio. It was 

completed in 1982 at a cost of $588 
million. The plant is named after Robert 
B. Killen, who guided the company 
as president during the early 1970s 
and then became chairman. He was a 
University of Cincinnati graduate and 
worked his way up the corporate ladder 
from cadet engineer.

In the mid 1970s and into the 
1980s the company became more 
focused on customer service. In 
response to rising energy costs and 
infl ation, the company created “budget 
billing,” worked with social service 
agencies and created payment 
plans for those having diffi culty paying 
their bills.

continued

7

 
 
 
In 1985 DPL Inc. was formed as a 
holding company to provide a fl exible 
fi nancial organization for capital 
investment and managerial control. 
In the late 1980s, demolition of 
the 70-year-old Tait Station began.
During the 1990s DP&L offered 
the “Way to Go®” energy effi ciency 
programs, featuring Lucky the Dog, 
that helped customers save money 
and energy. DP&L was the fi rst 
Ohio utility to offer a program of this 
type to customers.

“Think Hot! Stay Safe!” presenters Allison Marshall, 

substation electrician, and Rick Vance, meterman, 

are demonstrating that trees can conduct 

electricity. View a video about the presentation 

on the DP&L Website.

The company also created an 
educational safety demonstration 
dubbed “Think Hot! Stay Safe!” that 
is entertaining for kids of all ages, 
but also dramatically shows the 
dangers of electricity. One main 
point of the presentation is to stay far 
away from fallen power lines. DP&L 
employees are available to bring the 
presentation to schools and special 
events all over the Miami Valley. 
Presentations are also available to 
train police and fi re professionals who 
may encounter dangerous electrical 
situations. Call 937-259-7925 or e-mail 
ThinkHotStaySafe@DPLINC.com at 
least two weeks in advance of the date 
requested to schedule a presentation. 

On August 8, 2007 DP&L 

experienced an all-time record for the 
demand of electricity: 3,270 megawatts 
(net peak load).

Testing New Technology and 
Reducing Energy Consumption in 
the Miami Valley

In 2009 DP&L began using and 
evaluating a hybrid bucket truck that 
offers reduced noise and increased 
fuel effi ciency. The hybrid’s battery is 
recharged overnight and also through 
regenerative braking. When at a job 

8

DP&L began construction in late 2009 of a 
1.1 megawatt solar array near its Yankee 
substation in Washington Township, 
Montgomery County, Ohio. The state’s 
energy legislation calls for 25% of all 
energy consumed by Ohioans to be from 
alternative energy by 2025. Of that, 0.5% 
must be solar energy. DP&L’s Yankee 
solar array consists of 9,120 solar panels 
constructed over 7 acres, and generates 
enough electricity to power the equivalent 
of 150 homes a year. The array cost 
approximately $5 million to build and was 
completed in the spring of 2010.

With DP&L – Tomorrow Starts Today

Today, DP&L 
provides electrical 
service to over 
500,000 customers 
in 24 counties, 
spanning 6,000 
square miles. In 
2010, the company’s 
customer service 
representatives 
fi elded over 2.3 
million phone calls.

Then, as Now, Teamwork is the Key

In 1953 Frank Tait, chairman of the board 
at the time, addressed the Newcomen 
Society on DP&L’s contributions to Ohio. 
What he said to the audience 58 years 
ago still holds true today:

“I suggest you bear in mind that not I, 
nor any individual entirely is responsible 
for what success our company has 
obtained and hopes greatly to augment 
in the future. Rather, let me remind all of 
you it is the overall determination and 
performance of all those men and 
women, who, each in his own capacity, 
has performed and intends to carry 
on in the future all the many duties and 
responsibilities which, considered 
as a whole, constitutes the ‘teamwork’ 
that is the only means to ensure 
continuing success.“ 

For more about DP&L and its employees visit 
www.dpandl.com.

site, the truck’s battery can power the 
climate control system as well as the 
boom (or arm) that is used to reach 
power lines. This not only means 
fuel and emissions savings, but also 
eliminates noise that would otherwise 
come from the diesel engine. That 
noise reduction means customers 
aren’t disturbed during the night while 
our crews are hard at work repairing 
service. 

Also in 2009, DP&L began offering 

new energy effi ciency programs for 
residential and business customers, 

which include 
discounts and 
rebates on 
improvements that 
use less energy, 
save money and 
help protect the 
environment. 
Since the program 
began, over 3.5 

million compact fl uorescent light bulbs 
discounted by DP&L have been sold in 
the Miami Valley.

Initial calculations show that the 

DP&L effi ciency programs have saved 
enough energy to power 24,000 homes. 
The programs for both residential and 
business customers include lighting 
discounts, appliance recycling, HVAC 
rebates, cooling tune-ups and unique 
business and government rebates.

DP&L’s Yankee solar facility was constructed in 

partnership with a number of regional companies 

led by Ameridian Specialty Services, Inc. 

of Cincinnati.

DPL Inc. and The Dayton Power and Light Company

Combined Form 10-K

United States Securities and Exchange Commission Washington, D.C. 20549

Form 10-K

(X) Annual Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the fiscal year ended December 31, 2010
or

(  ) Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from ___________ to ___________

Commission 
File Number

1-9052

1-2385

Registrant, State of Incorporation, 
Address and Telephone Number

DPL Inc.
(An Ohio Corporation) 
1065 Woodman Drive, Dayton, Ohio 45432 
937-224-6000

The Dayton Power and Light Company
(An Ohio Corporation) 
1065 Woodman Drive, Dayton, Ohio 45432 
937-224-6000

I.R.S. Employer 
Identification No.

31-1163136

31-0258470

Each of the following classes or series of securities registered pursuant to Section 12 (b) of the 
Act is registered on the New York Stock Exchange:

Registrant

DPL Inc.

Description

Common Stock, $0.01 par value and Preferred Share Purchase Rights

The Dayton Power 
and Light Company

None

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if each registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.
DPL Inc.
The Dayton Power and Light Company

Yes ✔
Yes

No
No ✔

Indicate by check mark if each registrant is not required to file reports pursuant to Section 13 or Section 15(d) of 
the Exchange Act.
DPL Inc.
The Dayton Power and Light Company

No ✔
No ✔

Yes
Yes

Indicate by check mark whether each registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the 
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required 
to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
DPL Inc.
The Dayton Power and Light Company

Yes ✔
Yes ✔

No
No

Indicate by check mark whether each registrant has submitted electronically and posted on its corporate Web site, if any, every 
Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months 
(or for such shorter period that the registrant was required to submit and post such files).
DPL Inc.
The Dayton Power and Light Company

Yes ✔
Yes

No
No

2 

DPL Inc.

 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and 
will not be contained, to the best of each registrant’s knowledge, in definitive proxy or information statements incorporated by 
reference in Part III of this Form 10-K or any amendment to this Form 10-K.
DPL Inc.
The Dayton Power and Light Company

✔
✔

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See 
definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.

DPL Inc.
The Dayton Power and Light Company

Large 
Accelerated 
filer
✔

Accelerated 
filer

Non-
Accelerated 
filer

Smaller 
reporting 
company

✔

Indicate by check mark whether each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
DPL Inc.
The Dayton Power and Light Company

No ✔
No ✔

Yes
Yes

The aggregate market value of DPL Inc.’s common stock held by non-affiliates of DPL Inc. as of June 30, 2010 
was approximately $2.8 billion based on a closing sale price of $23.90 on that date as reported on the New York 
Stock Exchange. All of the common stock of The Dayton Power and Light Company is owned by DPL Inc. As of 
February 15, 2011, each registrant had the following shares of common stock outstanding:

Registrant

DPL Inc.

The Dayton Power 
and Light Company

Description

Common Stock, $0.01 par value  
and Preferred Share Purchase Rights

Shares Outstanding

116,931,350

Common Stock, $0.01 par value

41,172,173

This combined Form 10-K is separately filed by DPL Inc. and The Dayton Power and Light Company. Information 
contained herein relating to any individual registrant is filed by such registrant on its own behalf. Each registrant 
makes no representation as to information relating to a registrant other than itself.

Documents Incorporated by Reference

Portions of DPL’s definitive proxy statement for its 2011 Annual Meeting of Shareholders are incorporated by 
reference in Part III of this Form 10-K.

DPL Inc. 

3

 
DPL Inc. and The Dayton Power and Light Company
Index to Annual Report on Form 10-K

Fiscal Year Ended December 31, 2010

Glossary of Terms 

Page No.
5

Business
Risk Factors
Unresolved Staff Comments
Properties
Legal Proceedings
Removed and Reserved

Market for Registrant’s Common Equity, Related Shareholder Matters  
and Issuer Purchases of Equity Securities 
Selected Financial Data
Management’s Discussion and Analysis of Financial Condition and  
Results of Operations 
Quantitative and Qualitative Disclosures about Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting  
and Financial Disclosure
Controls and Procedures
Other Information

Directors and Executive Officers of the Registrant
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management  
and Related Shareholder Matters
Certain Relationships and Related Transactions
Principal Accountant Fees and Services

Exhibits and Financial Statement Schedules 

Signatures
Schedule II Valuation and Qualifying Accounts
Subsidiaries of DPL Inc. and The Dayton Power and Light Company
Consent of Independent Registered Public Accounting Firm 

7
23
33
33
33
33

34
36

37
66
67

137
137
137

138
138

138
138
138

139

147
148
149
150

Part I
Item 1
Item 1A
Item 1B
Item 2
Item 3
Item 4

Part II
Item 5

Item 6
Item 7

Item 7A
Item 8
Item 9

Item 9A
Item 9B

Part III

Item 10
Item 11
Item 12

Item 13
Item 14

Part IV
Item 15

Other

4 

DPL Inc.

 
Glossary of Terms

The following select abbreviations or acronyms are used in this Form 10-K:

Abbreviation or Acronym

Definition

AMI

AOCI

ARO 

ASU 

BTU 

CFTC 

CAA 

CAIR

CSP

CO2 

CCEM 

CRES 

DPL 

DPLE 

DPLER 

DP&L 

Advanced Metering Infrastructure 

Accumulated Other Comprehensive Income 

Asset Retirement Obligation

Accounting Standards Update

British Thermal Units

Commodity Futures Trading Commission

Clean Air Act

Clean Air Interstate Rule

Columbus Southern Power, a subsidiary of AEP

Carbon Dioxide

Customer Conservation and Energy Management

Competitive Retail Electric Service

DPL Inc., the parent company

DPL Energy, LLC, a wholly owned subsidiary of DPL which engages in the 
operation of peaking generation facilities

DPL Energy Resources, Inc., a wholly owned subsidiary of DPL which sells 
retail electric energy and other energy services 

The Dayton Power and Light Company, the principal subsidiary of DPL and 
a public utility which sells electricity to residential, commercial, industrial and 
governmental customers in a 6,000 square mile area of West Central Ohio

Duke Energy 

Duke Energy Ohio, Inc., formerly The Cincinnati Gas & Electric Company (CG&E)

EIR 

EPS 

Environmental Investment Rider

Earnings Per Share

ESP Stipulation 

ESOP 

ESP 

FASB 

FASC

FERC 

FGD 

FTRs

GAAP 

GHG 

A Stipulation and Recommendation filed by DP&L with the PUCO on 
February 24, 2009 regarding DP&L’s ESP filing pursuant to SB 221. The 
Stipulation was signed by the Staff of the PUCO, the Office of the Ohio 
Consumers’ Counsel and various intervening parties. The PUCO approved 
the Stipulation on June 24, 2009. 

Employee Stock Ownership Plan

Electric Security Plans, filed with the PUCO, pursuant to Ohio law

Financial Accounting Standards Board

FASB Accounting Standards Codification

Federal Energy Regulatory Commission

Flue Gas Desulfurization

Financial Transmission Rights

Generally Accepted Accounting Principles in the United States

Greenhouse Gas

DPL Inc. 

5

 
 
Continued from page 5

Abbreviation or Acronym

Definition

kWh 

Kilowatt hours

LOC

MRO

MTM

MVIC

MWh 

NERC 

NOV 

NOx 

Letter of Credit

Market Rate Option

Mark to Market

Miami Valley Insurance Company, a wholly owned insurance subsidiary of 
DPL that provides insurance services to DPL and its subsidiaries

Megawatt hours

North American Electric Reliability Corporation

Notice of Violation

Nitrogen Oxide

NYMEX

New York Mercantile Exchange

OAQDA 

Ohio Air Quality Development Authority

OCC 

ODT 

Ohio Consumers’ Counsel

Ohio Department of Taxation

Ohio EPA 

Ohio Environmental Protection Agency

OTC 

Over-The-Counter

OVEC 

PJM 

PRP 

Ohio Valley Electric Corporation, an electric generating company in which 
DP&L holds a 4.9% equity interest

PJM Interconnection, LLC, a regional transmission organization

Potentially Responsible Party

PUCO 

Public Utilities Commission of Ohio

RSU 

RTO 

RPM 

SB 221 

SCR 

SEC 

SECA 

SFAS 

SO2 

SSO

Restricted Stock Units

Regional Transmission Organization

Reliability Pricing Model

Ohio Senate Bill 221, an Ohio electric energy bill that was signed by the 
Governor on May 1, 2008 and went into effect July 31, 2008. This law 
required all Ohio distribution utilities to file either an ESP or MRO to be in 
effect January 1, 2009. The law also contains, among other things, annual 
targets relating to advanced energy portfolio standards, renewable energy, 
demand reduction and energy efficiency standards.

Selective Catalytic Reduction

Securities and Exchange Commission

Seams Elimination Charge Adjustment

Statement of Financial Accounting Standards

Sulfur Dioxide

Standard Service Offer which represents the regulated rates, authorized by 
the PUCO, charged to retail customers within DP&L’s service territory.

TCRR

Transmission Cost Recovery Rider

USEPA 

U.S. Environmental Protection Agency

USF 

Universal Service Fund

VRDN 

Variable Rate Demand Note

6 

DPL Inc.

 
Part I

Item 1 Business

This report includes the combined filing of DPL 
and DP&L. DP&L is the principal subsidiary of 
DPL providing approximately 93% of DPL’s total 
consolidated gross margin and approximately 91% 
of DPL’s total consolidated asset base. Throughout 
this report, the terms “we,” “us,” “our” and “ours” are 
used to refer to both DPL and DP&L, respectively and 
altogether, unless the context indicates otherwise. 
Discussions or areas of this report that apply only to 
DPL or DP&L will clearly be noted in the section.

Website Access To Reports
We file current, annual and quarterly reports and 
other information required by the Securities Exchange 
Act of 1934, as amended, with the SEC. You may 
read and copy any document we file at the SEC’s 
public reference room located at 100 F Street N.E., 
Washington, D.C. 20549, USA. Please call the SEC at 
(800) SEC-0330 for further information on the public 
reference rooms. Our SEC filings are also available to 
the public from the SEC’s website at http://www.sec.gov.
Our public internet site is http://www.dplinc.com. 
We make available, free of charge, through our internet 
site, our annual reports on Form 10-K, quarterly reports 
on Form 10-Q, current reports on Form 8-K, and Forms 
3, 4 and 5 filed on behalf of our directors and executive 
officers and amendments to those reports filed or 
furnished pursuant to the Securities Exchange Act of 
1934, as amended, as soon as reasonably practicable 
after we electronically file such material with, or furnish 
it to, the SEC.

In addition, our public internet site includes 
other items related to corporate governance matters, 
including, among other things, our governance 
guidelines, charters of various committees of the 
Board of Directors and our code of business conduct 
and ethics applicable to all employees, officers and 
directors. You may obtain copies of these documents, 
free of charge, by sending a request, in writing, to  
DPL Investor Relations, 1065 Woodman Drive, Dayton, 
Ohio 45432.

Forward-looking Statements: Certain statements 

contained in this report are “forward-looking 
statements” within the meaning of the Private Securities 
Litigation Reform Act of 1995. Please see page 37 for 
more information about forward-looking statements 
contained in this report.

Organization
DPL is a regional energy company organized in 1985 
under the laws of Ohio. Our executive offices are 
located at 1065 Woodman Drive, Dayton, Ohio 45432 – 
telephone (937) 224-6000.

DP&L is a public utility incorporated in 1911 
under the laws of Ohio. DP&L sells electricity to 
residential, commercial, industrial and governmental 
customers in a 6,000 square mile area of West Central 
Ohio. Electricity for DP&L’s 24 county service area is 
primarily generated at eight coal-fired power plants and 
is distributed to more than 500,000 retail customers. 
Principal industries served include automotive, food 
processing, paper, plastic, manufacturing and defense. 
DP&L’s sales reflect the general economic conditions 
and seasonal weather patterns of the area. DP&L sells 
any excess energy and capacity into the wholesale 
market. DP&L also sells electricity to DPLER, an 
affiliate, to satisfy the electric requirements of its retail 
customers.

During 2010, DPL, for the first time, met the GAAP 

requirements for separate segment reporting. DPL’s 
two segments are the Utility segment, comprised of its 
DP&L subsidiary, and the Competitive Retail segment, 
comprised of its DPLER subsidiary. Refer to Note 17 of 
Notes to Consolidated Financial Statements for more 
information relating to these reportable segments. 
DP&L does not have any reportable segments.

DPLER sells competitive retail electric service, 
under contract, primarily to commercial and industrial 
customers. DPLER has approximately 9,000 customers 
currently located throughout Ohio. All of DPLER’s 
electric energy was purchased from DP&L to meet 
these sales obligations. During 2010, we implemented 
a new wholesale agreement between DP&L and 
DPLER. Under this agreement, intercompany sales from 
DP&L to DPLER were based on the market prices for 
wholesale power. In 2009 and prior periods, DPLER’s 
purchases from DP&L were transacted at prices that 
approximated DPLER’s sales prices to its end-use retail 
customers. The operations of DPLER are not subject to 
rate regulation by federal or state regulators.

DPL’s other significant subsidiaries (all of which 
are wholly-owned) include: DPLE, which engages in 
the operation of peaking generating facilities and sells 
power in wholesale markets and MVIC, which is our 
captive insurance company that provides insurance to 
us and our subsidiaries.

DPL also has a wholly-owned business trust, DPL 
Capital Trust II, formed for the purpose of issuing trust 
capital securities to investors.

DPL Inc. 

7

DP&L’s electric transmission and distribution 

businesses are subject to rate regulation by federal 
and state regulators while its generation business is 
deemed competitive under Ohio law. Accordingly, 
DP&L applies the accounting standards for regulated 
operations to its electric transmission and distribution 
businesses and records regulatory assets when 
incurred costs are expected to be recovered in future 
customer rates, and regulatory liabilities when current 
recoveries in customer rates relate to expected 
future costs.

DPL and its subsidiaries employed 1,494 

persons as of January 31, 2011, of which 1,321 
were full-time employees and 173 were part-time 
employees. At that date, 1,298 of these full-time 
employees and substantially all of the part-time 
employees were employed by DP&L. Approximately 
54% of the employees are under a collective 
bargaining agreement.

Significant Developments

Borrowing Activities

On April 20, 2010, DP&L entered into a $200 million 
unsecured revolving credit agreement with a syndicated 
bank group. This agreement is for a three year term 
expiring on April 20, 2013 and provides DP&L with the 
ability to increase the size of the facility by an additional 
$50 million. The facility contains one financial covenant: 
DP&L’s total debt to total capitalization ratio is not to 
exceed 0.65 to 1.00. This facility also contains a $50 
million letter of credit sublimit.

On December 1, 2010, DP&L renewed two $50 

million LOC agreements with JPMorgan Chase Bank, 
N.A. These agreements are for three years, expiring 
December 9, 2013. The irrevocable LOC’s continue to 
back the payment of principal and interest relating to 
the $100 million State of Ohio Collateralized Air Quality 
Development Revenue Refunding Bonds, 2008 Series 
A and B which are due in November 2040.

Stock Repurchase Plan

On October 27, 2010, the DPL Board of Directors 
approved a new stock repurchase plan to acquire up 
to $200 million of DPL common stock. Under this plan, 
DPL may repurchase its common stock from time to 
time in the open market, through private transactions 
or otherwise, on such terms and conditions as the 
company deems appropriate. The company expects to 
subject the purchases to restrictions relating to volume, 
price and timing in an effort to minimize the impact of 
the purchases upon the market for its common stock. 
DPL intends to fund purchases from cash on hand, 

available borrowings, cash flow from operations and 
proceeds from potential debt or other capital market 
transactions. The plan will run through December 31, 
2013, but may be modified or terminated at any time 
without prior notice. Through December 31, 2010, 
DPL repurchased approximately 2.04 million shares of 
common stock under this stock repurchase plan at an 
average price per share of $25.75.

Construction of Yankee Solar Facility

On April 23, 2010, DP&L’s Yankee solar station, a 
certified Ohio Renewable Energy Resource Generating 
Facility, was placed into service. The Yankee facility 
is comprised of 9,120 solar panels constructed over 
approximately 7 acres of land located in the Dayton, 
Ohio area. The facility is expected to generate 
approximately 1,390 MWh of electric energy per 
year which is sufficient to power the equivalent of 
approximately 150 homes a year.

Customer Switching

During 2010, there were 4 additional unaffiliated 
marketers that registered as CRES providers in DP&L’s 
service territory. We have experienced increased 
competition to provide transmission and generation 
services to our retail customers. DPLER, a CRES 
provider that is also a subsidiary of DPL, accounted for 
approximately 97% of the total retail energy supplied 
by CRES providers within DP&L’s service territory 
in 2010. During 2010, 847 customers with an energy 
usage of 145 million kWh were supplied by other CRES 
providers within DP&L’s service territory, compared to 
44 customers that had an energy usage of 16 million 
kWh during 2009. For the year ended December 31, 
2010, the reduction in DPL’s and DP&L’s gross margin 
as a result of customers switching to DPLER and other 
CRES providers is estimated to be approximately $17 
million and $53 million, respectively.

Increase in Dividends on DPL’s Common Stock

On December 8, 2010, DPL’s Board of Directors 
authorized a quarterly dividend rate increase of 
approximately 10%, increasing the quarterly dividend 
per DPL common share from $.3025 to $.3325. If this 
dividend rate is maintained, the annualized dividend 
would increase from $1.21 per share to $1.33 per share.

Electric Operations and Fuel Supply

2010 Summer Generating Capacity

(Amounts in MWs)

Coal Fired

Peaking Units

Total

DPL
DP&L 

2,830 
2,830 

988 
431 

3,818 
3,261 

8 

DPL Inc.

 
DPL’s present summer generating capacity, including peaking units, is approximately 3,818 MW. Of this capacity, 
approximately 2,830 MW, or 74%, is derived from coal-fired steam generating stations and the balance of 
approximately 988 MW, or 26%, consists of solar, combustion turbine and diesel peaking units.

DP&L’s present summer generating capacity, including peaking units, is approximately 3,261 MW. Of this 
capacity, approximately 2,830 MW, or 87%, is derived from coal-fired steam generating stations and the balance of 
approximately 431 MW, or 13%, consists of solar, combustion turbine and diesel peaking units.

Our all-time net peak load was 3,270 MW, occurring August 8, 2007.
Approximately 87% of the existing steam generating capacity is provided by certain generating units owned 
as tenants in common with Duke Energy and CSP. As tenants in common, each company owns a specified share 
of each of these units, is entitled to its share of capacity and energy output, and has a capital and operating cost 
responsibility proportionate to its ownership share. DP&L’s remaining steam generating capacity (approximately 
365 MW) is derived from a generating station owned solely by DP&L. Additionally, DP&L, Duke Energy and CSP 
own, as tenants in common, 884 circuit miles of 345,000-volt transmission lines. DP&L has several interconnections 
with other companies for the purchase, sale and interchange of electricity.

In 2010, we generated 98.9% of our electric output from coal-fired units and 1.1% from solar, oil and natural 

gas-fired units.

The following table sets forth DP&L’s and DPLE’s generating stations and, where indicated, those stations 

which DP&L owns as tenants in common.

Station

Ownership*

Operating Company

Location

DPL Portion

Total

Approximate Summer  
MW Rating 

Coal Units 
Hutchings 
Killen 
Stuart 
Conesville – Unit 4 
Beckjord – Unit 6 
Miami Fort – Units 7 & 8 
East Bend – Unit 2 
Zimmer 

Solar, Combustion Turbines  

or Diesel

Hutchings 
Yankee Street 
Yankee Solar
Monument 
Tait Diesels 
Sidney 
Tait Units 1-3 
Killen 
Stuart 
Montpelier Units 1-4 
Tait Units 4-7 

  W
C 
C 
C 
C 
C 
C 
C 

W 
W 
W
W 
W 
W 
W 
C 
C 
W 
W 

DP&L
DP&L 
DP&L 
CSP 
Duke Energy
Duke Energy
Duke Energy
Duke Energy

Miamisburg, OH 
Wrightsville, OH 
Aberdeen, OH 
Conesville, OH 
New Richmond, OH 
North Bend, OH 
Rabbit Hash, KY 
Moscow, OH 

DP&L 
DP&L 
DP&L
DP&L 
DP&L 
DP&L 
DP&L 
DP&L 
DP&L 
DPLE 
DPLE 

Miamisburg, OH 
Centerville, OH 
Centerville, OH
Dayton, OH 
Dayton, OH 
Sidney, OH 
Moraine, OH 
Wrightsville, OH 
Aberdeen, OH 
Poneto, IN 
Moraine, OH 

365 
402 
808 
129 
207 
368 
186 
365 

25 
101 
1
12 
10 
12 
256 
12 
3 
236 
320 

365 
600 
2,308 
780 
414 
1,020 
600 
1,300 

25 
101 
1
12 
10 
12 
256 
18 
10 
236 
320

Total approximate summer generating capacity 

3,818 

8,388

* W = Wholly-Owned

   C = Commonly-Owned 

In addition to the above, DP&L also owns a 4.9% equity ownership interest in OVEC, an electric generating 
company. OVEC has two plants in Cheshire, Ohio and Madison, Indiana with a combined generation capacity of 
approximately 2,265 MW. DP&L’s share of this generation capacity is approximately 111 MW.

We have substantially all of the total expected coal volume needed to meet our retail and firm wholesale sales 

requirements for 2011 under contract. The majority of the contracted coal is purchased at fixed prices. Some 
contracts provide for periodic adjustments and some are priced based on market indices. Fuel costs are affected 
by changes in volume and price and are driven by a number of variables including weather, the wholesale market 

DPL Inc. 

9

 
price of power, certain provisions in coal contracts 
related to government imposed costs, counterparty 
performance and credit, scheduled outages and 
generation plant mix. Due to the installation of emission 
controls equipment at certain jointly owned units and 
barring any changes in the regulatory environment in 
which we operate, we expect to have a balanced SO2 
and NOx position for 2011.

The gross average cost of fuel consumed per kWh 

was as follows:

Average Cost of Fuel Consumed (¢/kWh)

2010

2.42
2.37

2009

2.39
2.36

2008

2.28
2.22

DPL
DP&L 

Seasonality

The power generation and delivery business is 
seasonal and weather patterns have a material effect 
on operating performance. In the region we serve, 
demand for electricity is generally greater in the 
summer months associated with cooling and in the 
winter months associated with heating as compared to 
other times of the year. Unusually mild summers and 
winters could have an adverse effect on our results of 
operations, financial condition and cash flows.

Rate Regulation and Government Legislation

DP&L’s sales to SSO retail customers are subject to 
rate regulation by the PUCO. DP&L’s transmission 
rates and wholesale electric rates to municipal 
corporations, rural electric co-operatives and other 
distributors of electric energy are subject to regulation 
by the FERC under the Federal Power Act.

Ohio law establishes the process for determining 
SSO retail rates charged by public utilities. Regulation 
of retail rates encompasses the timing of applications, 
the effective date of rate increases, the recoverable 
cost basis upon which the rates are set and other 
related matters. Ohio law also established the Office 
of the OCC, which has the authority to represent 
residential consumers in state and federal judicial and 
administrative rate proceedings.

Ohio legislation extends the jurisdiction of the 
PUCO to the records and accounts of certain public 
utility holding company systems, including DPL. The 
legislation extends the PUCO’s supervisory powers to 
a holding company system’s general condition and 
capitalization, among other matters, to the extent that 
such matters relate to the costs associated with the 
provision of public utility service. Based on existing 

PUCO and FERC authorization, regulatory assets and 
liabilities are recorded on the balance sheets. See 
Note 3 of Notes to Consolidated Financial Statements.

Competition and Regulation

Ohio Matters
Ohio Retail Rates

The PUCO maintains jurisdiction over DP&L’s delivery 
of electricity, SSO and other retail electric services.

On May 1, 2008, substitute SB 221, an Ohio electric 

energy bill, was signed by the Governor and went into 
effect July 31, 2008. This law required that all Ohio 
distribution utilities file either an ESP or MRO. Under 
the MRO, a periodic competitive bid process will set 
the retail generation price after the utility demonstrates 
that it can meet certain market criteria and bid 
requirements. Also, under this option, utilities that still 
own generation in the state are required to phase-in 
the MRO over a period of not less than five years. An 
ESP may allow for adjustments to the SSO for costs 
associated with environmental compliance; fuel and 
purchased power; construction of new or investment 
in specified generating facilities; and the provision of 
standby and default service, operating, maintenance, 
or other costs including taxes. As part of its ESP, a 
utility is permitted to file an infrastructure improvement 
plan that will specify the initiatives the utility will take 
to rebuild, upgrade, or replace its electric distribution 
system, including cost recovery mechanisms. Both the 
MRO and ESP option involve a “significantly excessive 
earnings test” based on the earnings of comparable 
companies with similar business and financial risks. 
The PUCO issued three sets of rules related to 
implementation of the law. These rules address topics 
such as the information that must be included in an ESP 
as well as a MRO, the significantly excessive earnings 
test requirements, corporate separation revisions, rules 
relating to the recovery of transmission related costs, 
electric service and safety standards dealing with 
the statewide line extension policy, and rules relating 
to advanced energy portfolio standards, renewable 
energy, demand reduction and energy efficiency 
standards.

In compliance with SB 221, DP&L filed its ESP at 
the PUCO on October 10, 2008. This plan contained 
three parts: 1) a standard offer plan; 2) a CCEM plan; 
and 3) an alternative energy plan. After discussions with 
Commission Staff, the Ohio Consumers’ Counsel and 
other interested parties, an ESP Stipulation was agreed 
to and filed on February 24, 2009. The ESP Stipulation, 
among other things, extended the Company’s rate 
plan through 2012, provided for recovery of the Ohio 

10  DPL Inc.

 
retail customers’ portion of fuel and purchased power 
costs beginning January 2010, provided for recovery 
of certain SB 221 compliance costs, and required 
DP&L to re-file its Smart Grid and advanced metering 
infrastructure (AMI) business cases, which were part 
of the CCEM plan, by September 1, 2009. On June 24, 
2009, the PUCO issued an order granting approval 
of the ESP Stipulation as filed and authorized DP&L 
to implement rates associated with alternative energy 
and energy efficiency compliance costs, which DP&L 
implemented beginning on July 1, 2009.

Consistent with the ESP Stipulation, DP&L re-
filed its Smart Grid and AMI business cases with the 
PUCO on August 4, 2009 seeking recovery of costs 
associated with a three-year plan to deploy AMI; 
and a ten-year plan for distribution and substation 
automation, core telecommunications, supporting 
software and in-home technologies. In August 2009, 
DP&L submitted an application for American Recovery 
and Reinvestment Act (ARRA) funding for the Smart 
Grid Investment Grant Program, seeking $145.1 million 
of matching funds but was notified in October 2009, 
that we would not receive funding under the ARRA. 
On October 19, 2010, DP&L elected to withdraw the 
re-filed case pertaining to the Smart Grid and AMI 
programs. The PUCO accepted the withdrawal in 
an order issued on January 5, 2011. The PUCO also 
indicated that it expects DP&L to continue to monitor 
other utilities’ Smart Grid and AMI programs and to 
explore the potential benefits of investing in Smart 
Grid and AMI programs and that DP&L will, when 
appropriate, file new Smart Grid and/or AMI business 
cases in the future.

SB 221 and the implementation rules contain 

targets relating to advanced energy portfolio standards, 
renewable energy, demand reduction and energy 
efficiency standards. If any targets are not met, 
compliance penalties will apply unless the PUCO 
makes certain findings that would excuse performance. 
In December 2009, DP&L made several filings 
relating to its renewable energy and energy efficiency 
compliance plans. DP&L was able to obtain Renewable 
Energy Credits sufficient to meet its non-solar 
renewable energy targets, but obtained only 36% of 
the 2009 Ohio-based solar resources. DP&L requested 
a waiver of any unmet 2009 Ohio solar requirements 
on grounds of force majeure because there were 
insufficient solar renewable energy credits available 
from Ohio resources. In March 2010, the PUCO ruled 
that DP&L’s 2009 Ohio solar target would be reduced 
to the amount that it had procured, but that any 
unmet requirement must be added to the 2010 target. 

DP&L has been able to acquire sufficient renewable 
resources in 2010 to meet its 2010 requirements plus 
that portion of the 2009 Ohio solar requirement that was 
added by the PUCO order.

On April 15, 2010, DP&L made its first annual 
required filing related to compliance with renewable 
and advanced energy targets contained in SB 221. 
Pursuant to PUCO rules, each April 15, DP&L and 
DPLER who are electric services companies pursuant 
to Ohio Revised Code, are required to provide a 
status report on whether or not they met the renewable 
benchmarks of the previous year, as well as a ten-
year plan outlining their plans to meet future annual 
renewable targets. In addition, on April 15 of each 
year, each utility that owns an electric generating 
facility in Ohio must report to the PUCO regarding 
its greenhouse gas emissions, and plans to reduce 
those emissions (environmental control plan) as well 
as a long-term forecast report which includes a plan 
to provide sufficient resources to meet customer load 
obligations (resource plan). DP&L’s long-term forecast 
filing was set for hearing. A settlement was reached in 
early 2011 under which the need for solar facilities was 
established. This settlement was filed with the PUCO for 
their approval.

In two separate filings, DP&L requested the 

PUCO’s consent that DP&L had met the 2009 
requirements for energy efficiency and for demand 
reduction based on DP&L’s interpretation of how those 
requirements should be applied. These filings also 
requested that if the PUCO disagreed with DP&L’s 
interpretation, the PUCO grant alternative relief and 
find that DP&L was unable to meet the targets due to 
reasons beyond its reasonable control, i.e., uncertainty 
throughout 2009 caused by delays in finalizing the 
rules and the lack of timely PUCO action on several of 
DP&L’s special contracts relating to demand response 
efforts which remain pending before the PUCO. Since 
this is a new process, it is unclear if a final order will be 
issued in these proceedings.

In addition, the rules that became effective 

December 10, 2009 required that on January 1, 2010, 
DP&L file an extensive energy efficiency portfolio 
plan, outlining how DP&L plans to comply with the 
energy efficiency and demand reduction benchmarks. 
DP&L filed a separate request for a finding that it had 
already complied with this requirement in the form of 
DP&L’s portfolio plan that had been filed in 2008 as 
part of its CCEM plan, which had been approved by 
the PUCO and is being implemented. On May 19, 2010 
the Commission approved in part and denied in part 
DP&L’s request that the Commission find that it met 

DPL Inc. 

11

 
the 2009 energy efficiency portfolio requirements and 
directed DP&L to file a measurement and verification 
plan as well as a market potential study within 60 days 
of the date of the order. We made this filing on July 15, 
2010. Although this case was set for hearing settlement 
talks are on-going.

We are unable to predict how the PUCO will 
respond to many of the filings discussed above, but 
believe that the outcome will not be material to our 
financial condition. However, as the energy efficiency 
and alternative energy targets get increasingly larger 
over time, the costs of complying with SB 221 and 
the PUCO’s implementing rules could have a material 
impact on our financial condition.

The ESP Stipulation also provided for the 
establishment of a fuel and purchased power 
recovery rider beginning January 1, 2010. The fuel 
rider fluctuates based on actual costs and recoveries 
and is modified at the start of each seasonal quarter: 
March 1, June 1, September 1 and December 1 each 
year. DP&L is currently undergoing an audit of its fuel 
rider which is conducted by an independent third party 
in accordance with the PUCO standards. As a result 
there is some uncertainty as to the costs that will be 
approved for recovery. DP&L anticipates that some of 
this uncertainty will be resolved during the summer of 
2011 after completion of the fuel audit. Based on the 
results of the audit, DP&L may record a favorable or 
unfavorable adjustment to earnings. It is too early to 
determine if any such adjustment would be material 
to our results of operations, financial condition and 
cash flows.

As a member of PJM, DP&L receives revenues 
from the RTO related to its transmission and generation 
assets and incurs costs associated with its load 
obligations for retail customers. SB 221 included a 
provision that would allow Ohio electric utilities to seek 
and obtain a reconcilable rider to recover RTO-related 
costs and credits. DP&L’s TCRR and PJM RPM riders 
were initially approved in November 2009 to recover 
these costs. Both the TCRR and the RPM riders assign 
costs and revenues from PJM monthly bills to retail 
ratepayers based on the percentage of SSO retail 
customers’ load and sales volumes to total retail load 
and total retail and wholesale volumes. Customer 
switching to CRES providers decreases DP&L’s SSO 
retail customers’ load and sales volumes. Therefore, 
increases in customer switching cause more of the 
RPM capacity costs and revenues to be excluded 
from the RPM rider calculation. RPM capacity costs 
and revenues are discussed further under “Regional 
Transmission Organizational Risks” in Item 1A – Risk 

Factors. DP&L’s annual true-up of these two riders was 
approved by the PUCO by an order dated April 28, 
2010. On October 15, 2010 DP&L made an interim 
adjustment to both the TCRR and the RPM riders that 
had no material change to the rate recovery amounts.

On September 9, 2009, the PUCO issued an order 

establishing a significantly excessive earnings test 
(SEET) proceeding pursuant to provisions contained 
in SB 221. A question and answer session was held 
before the Commission on April 1, 2010 to allow the 
Commission to gain a better understanding of the 
issues. The PUCO issued an order on June 30, 2010 to 
establish general rules for calculating the earnings and 
comparing them to a comparable group to determine 
whether there were significantly excessive earnings. 
The other three Ohio utilities were required to make 
their SEET determinations in 2010 based on 2009 
results. Pursuant to the ESP Stipulation, DP&L becomes 
subject to the SEET in 2013 based on 2012 earnings 
results and the SEET may have a material impact on 
operations.

On August 28, 2009, DP&L filed its application 
to establish reliability targets consistent with the most 
recent PUCO Electric Service and Safety Standards 
(ESSS). The PUCO issued a procedural schedule 
and held a technical conference in November 2009. 
Comments and reply comments were filed. On March 
29, 2010 DP&L entered into a settlement establishing 
the new reliability targets. This settlement was 
approved on July 29, 2010. According to the ESSS 
rules, DP&L will be subject to financial penalties if the 
established targets are not met for two consecutive 
years.

While the overall financial impact of SB 221 will not 
be known for some time, implementation of the bill and 
compliance with its requirements could have a material 
impact on our financial condition.

Ohio Competitive Considerations and Proceedings
Since January 2001, DP&L’s electric customers have 
been permitted to choose their retail electric generation 
supplier. DP&L continues to have the exclusive right 
to provide delivery service in its state certified territory 
and the obligation to supply retail generation service to 
customers that do not choose an alternative supplier. 
The PUCO maintains jurisdiction over DP&L’s delivery 
of electricity, SSO and other retail electric services.

Overall power market prices, as well as 
government aggregation initiatives within DP&L’s 
service territory, have led or may lead to the entrance 
of additional competitors in our service territory. During 
the year ended December 31, 2010, there were four 

12  DPL Inc.

 
additional unaffiliated marketers that registered as 
CRES providers in DP&L’s service territory, bringing 
the total number of CRES providers in DP&L’s service 
territory to eleven. DPLER, an affiliated company 
and one of the eleven registered CRES providers, 
has been marketing transmission and generation 
services to DP&L customers. During 2010, DPLER 
accounted for approximately 4,417 million kWh of the 
total 4,562 million kWh supplied by CRES providers 
within DP&L’s service territory. Also during 2010, 
847 customers with an annual energy usage of 145 
million kWh were supplied by other CRES providers 
within DP&L’s service territory, compared to 44 
customers that had an annual energy usage of 16 
million kWh during 2009. The volume supplied by 
DPLER represents approximately 31% of DP&L’s total 
distribution sales volume during 2010. The reduction 
to gross margin in 2010 as a result of customers 
switching to DPLER and other CRES providers was 
approximately $17 million and $53 million, for DPL and 
DP&L, respectively. We currently cannot determine the 
extent to which customer switching to CRES providers 
will occur in the future and the impact this will have 
on our operations, but any additional switching could 
have a significant adverse effect on our future results of 
operations, financial condition and cash flows.

Several communities in DP&L’s service area 
have passed ordinances allowing the communities to 
become government aggregators for the purpose of 
offering alternative electric generation supplies to their 
citizens. To date, none of these communities have 
aggregated their generation load.

In 2010, DPLER began providing CRES services 
to business customers in Ohio who are not in DP&L’s 
service territory. The incremental costs and revenues 
have not had a material impact on our results of 
operations, financial condition or cash flows.

Federal Matters

Like other electric utilities and energy marketers, DP&L 
and DPLE may sell or purchase electric products 
on the wholesale market. DP&L and DPLE compete 
with other generators, power marketers, privately and 
municipally-owned electric utilities and rural electric 
cooperatives when selling electricity. The ability of 
DP&L and DPLE to sell this electricity will depend not 
only on the performance of our generating units, but 
also on how DP&L’s and DPLE’s price, terms and 
conditions compare to those of other suppliers.

As part of Ohio’s electric deregulation law, all of 
the state’s investor-owned utilities are required to join a 
RTO. In October 2004, DP&L successfully integrated 

its 1,000 miles of high-voltage transmission into the PJM 
RTO. The role of the RTO is to administer a competitive 
wholesale market for electricity and ensure reliability of 
the transmission grid. PJM ensures the reliability of the 
high-voltage electric power system serving 51 million 
people in all or parts of Delaware, Illinois, Indiana, 
Kentucky, Maryland, Michigan, New Jersey, North 
Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West 
Virginia and the District of Columbia. PJM coordinates 
and directs the operation of the region’s transmission 
grid, administers the world’s largest competitive 
wholesale electricity market and plans regional 
transmission expansion improvements to maintain grid 
reliability and relieve congestion.

The PJM RPM capacity base residual auction for 

the 2013/2014 period cleared at a per megawatt price 
of $28/day for our RTO area. The per megawatt prices 
for the periods 2012/2013, 2011/2012 and 2010/2011 
were $16/day, $110/day and $174/day, respectively, 
based on previous auctions. Future RPM auction 
results will be dependent not only on the overall supply 
and demand of generation and load, but may also be 
impacted by congestion as well as PJM’s business 
rules relating to bidding for demand response and 
energy efficiency resources in the RPM capacity 
auctions. Increases in customer switching causes 
more of the RPM capacity costs and revenues to be 
excluded from the RPM rider calculation. We cannot 
predict the outcome of future auctions or customer 
switching but if the current auction price is sustained, 
our future results of operations, financial condition and 
cash flows could have a material adverse impact.
As a member of PJM, DP&L is also subject to 
charges and costs associated with PJM operations 
as approved by the FERC. FERC Orders issued in 
2007 and thereafter regarding the allocation of costs 
of large transmission facilities within PJM, would result 
in additional costs being allocated to DP&L that, over 
time and depending on final costs and how quickly the 
facilities are constructed, could become material. DP&L 
filed a notice of appeal to the U.S. Court of Appeals, 
D.C. Circuit which was consolidated with other appeals 
taken by other interested parties of the same FERC 
Orders and the consolidated cases were assigned to 
the 7th Circuit. On August 6, 2009, the 7th Circuit ruled 
that the FERC had failed to provide a reasoned basis 
for the allocation method it had approved. Rehearings 
were filed by other interested litigants and denied by 
the Court, which then remanded the matter to the FERC 
for further proceedings. On January 21, 2010, the FERC 
issued a procedural order on remand establishing a 
paper hearing process under which PJM will make 

DPL Inc.  13

 
an informational filing in late February. Subsequently 
PJM and other parties, including DP&L, filed initial 
comments, testimony, and recommendations and reply 
comments. FERC did not establish a deadline for its 
issuance of a substantive order and the matter is still 
pending. DP&L cannot predict the timing or the likely 
outcome of the proceeding. Until such time as FERC 
may act to approve a change in methodology, PJM 
will continue to apply the allocation methodology that 
had been approved by FERC in 2007. Although we 
continue to maintain that these costs should be borne 
by the beneficiaries of these projects and that DP&L 
is not one of these beneficiaries, any new credits or 
additional costs resulting from the ultimate outcome of 
this proceeding will be reflected in DP&L’s TCRR rider 
which already includes these costs.

NERC is a FERC-certified electric reliability 

organization responsible for developing and enforcing 
mandatory reliability standards, including Critical 
Infrastructure Protection (CIP) reliability standards, 
across eight reliability regions. In June 2009, 
Reliability First Corporation (RFC), with responsibilities 
assigned to it by NERC over the reliability region 
that includes DP&L, commenced a routine audit of 
DP&L’s operations. The audit, which was for the 
period June 18, 2007 to June 25, 2009, evaluated 
DP&L’s compliance with 42 requirements in 18 NERC-
reliability standards. DP&L is currently subject to a 
compliance audit at a minimum of once every three 
years as provided by the NERC Rules of Procedure. 
This audit was concluded in June 2009 and its findings 
revealed that DP&L had some Possible Alleged 
Violations (PAVs) associated with five NERC reliability 
requirements of various Standards. In response to 
the report, DP&L filed mitigation plans with RFC/
NERC to address the PAVs. These mitigation plans 
were accepted by RFC/NERC. In July 2010, DP&L 
negotiated a settlement with NERC wherein DP&L 
agreed to pay an immaterial amount in exchange for 
a resolution of all issues and obligations relating to the 
aforementioned PAVs. The settlement was approved on 
January 21, 2011 by the FERC.

Environmental Considerations

DPL’s and DP&L’s facilities and operations are 
subject to a wide range of environmental regulations 
and laws by federal, state and local authorities. The 
environmental issues that may impact us include:

■ The Federal CAA and state laws and regulations 
(including State Implementation Plans) which require 
compliance, obtaining permits and reporting as to air 
emissions.

■ Litigation with federal and certain state governments 
and certain special interest groups regarding whether 
modifications to or maintenance of certain coal-fired 
generating plants require additional permitting or 
pollution control technology, or whether emissions from 
coal-fired generating plants cause or contribute to 
global climate changes.

■ Rules and future rules issued by the USEPA and 
Ohio EPA that require substantial reductions in SO2, 
particulates, mercury and NOx emissions. DP&L has 
installed emission control technology and is taking 
other measures to comply with required and anticipated 
reductions.

■ Rules issued by the USEPA and Ohio EPA that require 
reporting and future rules that may require reductions 
of GHGs.

■ Rules and future rules issued by the USEPA 
associated with the Federal Clean Water Act (FCWA), 
which prohibits the discharge of pollutants into waters 
of the United States except pursuant to appropriate 
permits.

■ Solid and hazardous waste laws and regulations, 
which govern the management and disposal of certain 
waste. The majority of solid waste created from the 
combustion of coal and fossil fuels is fly ash and other 
coal combustion by-products. The EPA has previously 
determined that fly ash and other coal combustion 
by-products are not hazardous waste subject to the 
Resource Conservation and Recovery Act (RCRA), but 
the EPA is reconsidering that determination. A change 
in determination could significantly increase the costs 
of disposing of such by-products.

As well as imposing continuing compliance obligations, 
these laws and regulations authorize the imposition 
of substantial penalties for noncompliance, including 
fines, injunctive relief and other sanctions. In the normal 
course of business, we have investigatory and remedial 
activities underway at these facilities to comply, or 
to determine compliance, with such regulations. 
We record liabilities for loss contingencies related 
to environmental matters when a loss is probable 
of occurring and can be reasonably estimated in 
accordance with the provisions of GAAP. Accordingly, 
we have estimated accruals for loss contingencies 
of approximately $4.0 million for environmental 
matters. We also have a number of unrecognized loss 
contingencies related to environmental matters that 
are disclosed in the paragraphs below. We evaluate 
the potential liability related to environmental matters 
quarterly and may revise our estimates. Such revisions 

14  DPL Inc.

 
in the estimates of the potential liabilities could have 
a material effect on our results of operations, financial 
condition or cash flows.

In July 2010, the USEPA proposed new rules 
to limit the interstate transport of emissions of NOx 
and SO2 that would, if finalized, have a significant 
industry-wide impact on the operation of coal-fired 
generation units. We also have several other pending 
environmental matters associated with our coal-fired 
generation units and these pending matters, along with 
the new rules proposed by the USEPA, could result in 
significant capital and operations and maintenance 
expenditures for our coal-fired generation plants, and 
could result in the early retirement of our generation 
units that do not have SCR and FGD equipment 
installed. Currently, our coal-fired generation units at 
Hutchings and Beckjord do not have this emission-
control equipment installed and their early retirement 
could occur as early as 2015. DP&L owns 100% of the 
Hutchings plant and has a 50% interest in Beckjord Unit 
6. In addition to environmental matters, the operation of 
our coal-fired generation plants could be impacted by a 
multitude of other factors, including forecasted power, 
capacity and commodity prices, competition and the 
levels of customer switching, current and forecasted 
customer demand, cost of capital, and regulatory and 
legislative developments, any of which could pose 
a potential triggering event for an impairment of our 
investments in the Hutchings and Beckjord units.

Regulation Matters Related to Air Quality

Clean Air Act Compliance

In 1990, the federal government amended the CAA to 
further regulate air pollution. Under the law, the USEPA 
sets limits on how much of a pollutant can be in the 
air anywhere in the United States. The CAA allows 
individual states to have stronger pollution controls, but 
states are not allowed to have weaker pollution controls 
than those set for the whole country. The CAA has a 
material effect on our operations and such effects are 
detailed below with respect to certain programs under 
the CAA.

On October 27, 2003, the USEPA published 
final rules regarding the equipment replacement 
provision (ERP) of the routine maintenance, repair and 
replacement (RMRR) exclusion of the CAA. Activities 
at power plants that fall within the scope of the RMRR 
exclusion do not trigger new source review (NSR) 
requirements, including the imposition of stricter 
emission limits. On December 24, 2003, the United 
States Court of Appeals for the D.C. Circuit stayed 
the effective date of the rule pending its decision on 

the merits of the lawsuits filed by numerous states 
and environmental organizations challenging the final 
rules. On June 6, 2005, the USEPA issued its final 
response on the reconsideration of the ERP exclusion. 
The USEPA clarified its position, but did not change 
any aspect of the 2003 final rules. This decision was 
appealed and the D.C. Circuit vacated the final rules 
on March 17, 2006. The scope of the RMRR exclusion 
remains uncertain due to this action by the D.C. Circuit, 
as well as multiple litigations not directly involving us 
where courts are defining the scope of the exception 
with respect to the specific facts and circumstances 
of the particular power plants and activities before the 
courts. While we believe that we have not engaged 
in any activities with respect to our existing power 
plants that would trigger the NSR requirements, if NSR 
requirements were imposed on any of DP&L’s existing 
power plants, the results could have a material adverse 
impact to us.

The USEPA issued a proposed rule on October 
20, 2005 concerning the test for measuring whether 
modifications to electric generating units should 
trigger application of NSR standards under the CAA. 
A supplemental rule was also proposed on May 8, 
2007 to include additional options for determining 
if there is an emissions increase when an existing 
electric generating unit makes a physical or operational 
change. The rule was challenged by environmental 
organizations and has not been finalized. While we 
cannot predict the outcome of this rulemaking, any 
finalized rules could materially affect our operations.

Interstate Air Quality Rule

On December 17, 2003, the USEPA proposed the 
Interstate Air Quality Rule (IAQR) designed to reduce 
and permanently cap SO2 and NOx emissions from 
electric utilities. The proposed IAQR focused on 
states, including Ohio, whose power plant emissions 
are believed to be significantly contributing to fine 
particle and ozone pollution in other downwind states 
in the eastern United States. On June 10, 2004, the 
USEPA issued a supplemental proposal to the IAQR, 
now renamed the Clean Air Interstate Rule (CAIR). 
The final rules were signed on March 10, 2005 and 
were published on May 12, 2005. CAIR created an 
interstate trading program for annual NOx emission 
allowances and made modifications to an existing 
trading program for SO2. On August 24, 2005, the 
USEPA proposed additional revisions to the CAIR. 
On July 11, 2008, the U.S. Court of Appeals for the 
District of Columbia Circuit issued a decision to 
vacate the USEPA’s CAIR and its associated Federal 

DPL Inc.  15

 
Implementation Plan and remanded to the USEPA with 
instructions to issue new regulations that conformed 
with the procedural and substantive requirements of 
the CAA. The Court’s decision, in part, invalidated the 
new NOx annual emission allowance trading program 
and the modifications to the SO2 emission trading 
program established by the March 10, 2005 rules, 
and created uncertainty regarding future NOx and 
SO2 emission reduction requirements and their timing. 
The USEPA and a group representing utilities filed a 
request on September 24, 2008 for a rehearing before 
the entire Court. On December 23, 2008, the U.S. 
Court of Appeals issued an order on reconsideration 
that permits CAIR to remain in effect until the USEPA 
issues new regulations that would conform to the CAA 
requirements and the Court’s July 11, 2008 decision.
On July 6, 2010, the USEPA proposed the Clean 
Air Transport Rule (CATR) which may replace CAIR in 
2012. We have reviewed this proposal and submitted 
comments to the USEPA on September 30, 2010. We 
are unable to determine the overall financial impact that 
these rules could have on our operations in the future.

In 2007, the Ohio EPA revised their State 
Implementation Plan (SIP) to incorporate a CAIR 
program consistent with the IAQR. The Ohio EPA had 
received partial approval from the USEPA and had 
been awaiting full program approval from the USEPA 
when the U.S. Court of Appeals issued its July 11, 2008 
decision. As a result of the December 23, 2008 order, 
the Ohio EPA proposed revised rules on May 11, 2009, 
which were finalized on July 15, 2009. On September 
25, 2009, the USEPA issued a full SIP approval for 
the Ohio CAIR program. We do not expect that full 
SIP approval of the Ohio CAIR program will have a 
significant impact on operations.

Mercury and Other Hazardous Air Pollutants

On January 30, 2004, the USEPA published its 
proposal to restrict mercury and other air toxins 
from coal-fired and oil-fired utility plants. The USEPA 
“de-listed” mercury as a hazardous air pollutant from 
coal-fired and oil-fired utility plants and, instead, 
proposed a cap-and-trade approach to regulate the 
total amount of mercury emissions allowed from such 
sources. The final Clean Air Mercury Rule (CAMR) was 
signed March 15, 2005 and was published on May 18, 
2005. On March 29, 2005, nine states sued the USEPA, 
opposing the cap-and-trade regulatory approach 
taken by the USEPA. In 2007, the Ohio EPA adopted 
rules implementing the CAMR program. On February 

8, 2008, the U.S. Court of Appeals for the District of 
Columbia Circuit struck down the USEPA regulations, 
finding that the USEPA had not complied with statutory 
requirements applicable to “de-listing” a hazardous air 
pollutant and that a cap-and-trade approach was not 
authorized by law for “listed” hazardous air pollutants. 
A request for rehearing before the entire Court of 
Appeals was denied and a petition for review before 
the U.S. Supreme Court was filed on October 17, 
2008. On February 23, 2009, the U.S. Supreme Court 
denied the petition. The USEPA is expected to propose 
Maximum Achievable Control Technology (MACT) 
standards for coal- and oil-fired electric generating 
units during the quarter ending March 31, 2011 and 
finalize them during the quarter ending December 31, 
2011. Upon publication in the federal register following 
finalization, affected electric generating units (EGUs) 
will have three years to come into compliance with the 
new requirements. DP&L is unable to determine the 
impact of the promulgation of new MACT standards on 
its financial condition or results of operations; however, 
a MACT standard could have a material adverse effect 
on our operations. We cannot predict the final costs we 
may incur to comply with proposed new regulations to 
control mercury or other hazardous air pollutants.

On April 29, 2010, the USEPA issued a proposed 
rule that would reduce emissions of toxic air pollutants 
from new and existing industrial, commercial and 
institutional boilers, and process heaters at major and 
area source facilities. This regulation may affect five 
auxiliary boilers used for start-up purposes at DP&L’s 
generation facilities. The proposed regulations contain 
emissions limitations, operating limitations and other 
requirements. The compliance schedule will be three 
years from the date when these rules, if finalized, 
become effective. We currently cannot determine 
whether or not these rules will be finalized nor can 
we predict the effect of compliance costs, if any, on 
DP&L’s operations. Such costs, however, are not 
expected to be material.

On May 3, 2010, the USEPA finalized the “National 

Emissions Standards for Hazardous Air Pollutants” 
(NESHAP) for compression ignition (CI) reciprocating 
internal combustion engines (RICE). The units affected 
at DP&L are 18 diesel electric generating engines and 
eight emergency “black start” engines. The existing 
CI RICE units must comply by May 3, 2013. The 
regulations contain emissions limitations, operating 
limitations and other requirements. Compliance costs 
on DP&L’s operations are not expected to be material.

16  DPL Inc.

 
National Ambient Air Quality Standards

On January 5, 2005, the USEPA published its final non-
attainment designations for the National Ambient Air 
Quality Standard (NAAQS) for Fine Particulate Matter 
2.5 (PM 2.5). These designations included counties and 
partial counties in which DP&L operates and/or owns 
generating facilities. On March 4, 2005, DP&L and 
other Ohio electric utilities and electric generators filed 
a petition for review in the D.C. Circuit Court of Appeals, 
challenging the final rule creating these designations. 
On November 30, 2005, the court ordered the USEPA 
to decide on all petitions for reconsideration by 
January 20, 2006. On January 20, 2006, the USEPA 
denied the petitions for reconsideration. On July 7, 
2009, the D.C. Circuit Court of Appeals upheld the 
USEPA non-attainment designations for the areas 
impacting DP&L’s generation plants, however, on 
October 8, 2009 the USEPA issued new designations 
based on 2008 monitoring data that showed all areas in 
attainment to the standard with the exception of several 
counties in northeastern Ohio. The USEPA is expected 
to propose revisions to the PM 2.5 standard during 
the first quarter of 2011 as part of its routine five-year 
rule review cycle. We cannot predict the impact the 
revisions to the PM 2.5 standard will have on DP&L’s 
financial condition or results of operations.

On May 5, 2004, the USEPA issued its proposed 
regional haze rule, which addresses how states should 
determine the Best Available Retrofit Technology 
(BART) for sources covered under the regional haze 
rule. Final rules were published July 6, 2005, providing 
states with several options for determining whether 
sources in the state should be subject to BART. In the 
final rule, the USEPA made the determination that CAIR 
achieves greater progress than BART and may be 
used by states as a BART substitute. Numerous units 
owned and operated by us will be impacted by BART. 
We cannot determine the extent of the impact until Ohio 
determines how BART will be implemented.

On September 16, 2009, the USEPA announced 

that it would reconsider the 2008 national ground 
level ozone standard. A more stringent ambient ozone 
standard may lead to stricter NOx emission standards 
in the future. DP&L cannot determine the effect of this 
potential change, if any, on its operations.

Effective April 12, 2010, the USEPA implemented 

revisions to its primary NAAQS for nitrogen dioxide. 
This change may affect certain emission sources 
in heavy traffic areas like the I-75 corridor between 
Cincinnati and Dayton after 2016. Several of our 

facilities or co-owned facilities are within this area. 
DP&L cannot determine the effect of this potential 
change, if any, on its operations.

Effective August 23, 2010, the USEPA implemented 

revisions to its primary NAAQS for SO2 replacing the 
current 24-hour standard and annual standard with a 
one hour standard. DP&L cannot determine the effect 
of this potential change, if any, on its operations.

Climate Change

In response to a U.S. Supreme Court decision that the 
USEPA has the authority to regulate CO2 emissions 
from motor vehicles, the USEPA made a finding that 
CO2 and certain other GHGs are pollutants under the 
CAA. Subsequently, under the CAA, USEPA determined 
that CO2 and other GHGs from motor vehicles threaten 
the health and welfare of future generations by 
contributing to climate change. This finding became 
effective in January 2010. Numerous affected parties 
have petitioned the USEPA Administrator to reconsider 
this decision. On April 1, 2010, USEPA signed the 
“Light-Duty Vehicle Greenhouse Gas Emission 
Standards and Corporate Average Fuel Economy 
Standards” rule. Under USEPA’s view, this is the final 
action that renders carbon dioxide and other GHGs 
“regulated air pollutants” under the CAA. As a result of 
this action, it is expected that in 2011 various permitting 
programs will apply to other combustion sources, such 
as coal-fired power plants. We cannot predict the effect 
of this change, if any, on DP&L’s operations.

Legislation proposed in 2009 to target a reduction 

in the emission of GHGs from large sources was 
not enacted. Approximately 99% of the energy we 
produce is generated by coal. DP&L’s share of CO2 
emissions at generating stations we own and co-own 
is approximately 16 million tons annually. Proposed 
GHG legislation finalized at a future date could have 
a significant effect on DP&L’s operations and costs, 
which could adversely affect our net income, cash flows 
and financial condition. However, due to the uncertainty 
associated with such legislation, we cannot predict the 
final outcome or the financial impact that this legislation 
will have on DP&L.

On September 22, 2009, the USEPA issued a 
final rule for mandatory reporting of GHGs from large 
sources that emit 25,000 metric tons per year or 
more of CO2, including electric generating units. The 
first report is due in March 2011 for 2010 emissions. 
This reporting rule will guide development of policies 
and programs to reduce emissions. DP&L does not 
anticipate that this reporting rule will result in any 
significant cost or other impact on current operations.

DPL Inc. 

17

 
Litigation, Notices of Violation and Other  
Matters Related to Air Quality

Litigation Involving Co-Owned Plants

In 2004, eight states and the City of New York filed 
a lawsuit in Federal District Court for the Southern 
District of New York against American Electric Power 
Company, Inc. (AEP), one of AEP’s subsidiaries, 
Cinergy Corp. (a subsidiary of Duke Energy 
Corporation (Duke Energy)) and four other electric 
power companies. A similar lawsuit was filed against 
these companies in the same court by Open Space 
Institute, Inc., Open Space Conservancy, Inc. and 
The Audubon Society of New Hampshire. The lawsuits 
allege that the companies’ emissions of CO2 contribute 
to global warming and constitute a public or private 
nuisance. The lawsuits seek injunctive relief in the 
form of specific emission reduction commitments. In 
2005, the Federal District Court dismissed the lawsuits, 
holding that the lawsuits raised political questions that 
should not be decided by the courts. The plaintiffs 
appealed. Finding that the plaintiffs have standing 
to sue and can assert federal common law nuisance 
claims, the United States Court of Appeals for the 
Second Circuit on September 21, 2009 vacated the 
dismissal of the Federal District Court and remanded 
the lawsuits back to the Federal District Court for further 
proceedings. In response to a petition by the company 
defendants, the U.S. Supreme Court on December 6, 
2010 granted a hearing on the matter. Although we 
are not named as a party to these lawsuits, DP&L is 
a co-owner of coal-fired plants with Duke Energy and 
AEP (or their subsidiaries) that could be affected by 
the outcome of these lawsuits. The outcomes of these 
lawsuits could also encourage these or other plaintiffs 
to file similar lawsuits against other electric power 
companies, including DP&L. We are unable to predict 
the impact that these lawsuits might have on DP&L.
On September 21, 2004, the Sierra Club filed a 

lawsuit against DP&L and the other owners of the 
J.M. Stuart generating station in the U.S. District Court 
for the Southern District of Ohio for alleged violations 
of the CAA and the station’s operating permit. On 
August 7, 2008, a consent decree was filed in the 
U.S. District Court in full settlement of these CAA 
claims. Under the terms of the consent decree, DP&L 
and the other owners of the J.M. Stuart generating 
station agreed to: (i) certain emission targets related 
to NOx, SO2 and particulate matter; (ii) make energy 
efficiency and renewable energy commitments that 
are conditioned on receiving PUCO approval for the 
recovery of costs; (iii) forfeit 5,500 SO2 allowances; 

and (iv) provide funding to a third party non-profit 
organization to establish a solar water heater rebate 
program. DP&L and the other owners of the station 
also entered into an attorneys’ fee agreement to pay 
a portion of the Sierra Club’s attorney and expert 
witness fees. The parties to the lawsuit filed a joint 
motion on October 22, 2008, seeking an order by the 
U.S. District Court approving the consent decree with 
funding for the third party non-profit organization set at 
$300,000. On October 23, 2008, the U.S. District Court 
approved the consent decree. On October 21, 2009, 
the Sierra Club filed with the U.S. District Court a motion 
for enforcement of the consent decree based on the 
Sierra Club’s interpretation of the consent decree that 
would require certain NOx emissions that DP&L has 
been excluding from its computations to be included 
for purposes of complying with the emission targets 
and reporting requirements of the consent decree. 
DP&L believed that it was properly computing and 
reporting NOx emissions under the consent decree, but 
participated in settlement discussions with the Sierra 
Club. A proposed settlement was agreed to by both 
parties, approved by the court and then filed into the 
official record on July 13, 2010. The settlement amends 
the Consent Decree and sets forth a more detailed 
and clearer methodology to compute NOx emissions 
during start-up and shut-down periods. There were 
no cash payments under the terms of this settlement. 
The revision is not expected to have a material effect 
on DP&L’s results of operations, financial condition or 
cash flows in the future.

Notices of Violation Involving Co-Owned Plants

In November 1999, the USEPA filed civil complaints 
and NOVs against operators and owners of certain 
generation facilities for alleged violations of the CAA. 
Generation units operated by Duke Energy (Beckjord 
Unit 6) and CSP (Conesville Unit 4) and co-owned by 
DP&L were referenced in these actions. Numerous 
northeast states have filed complaints or have indicated 
that they will be joining the USEPA’s action against 
Duke Energy and CSP. Although DP&L was not 
identified in the NOVs, civil complaints or state actions, 
the results of such proceedings could materially affect 
DP&L’s co-owned plants.

In June 2000, the USEPA issued a NOV to the 
DP&L-operated J.M. Stuart generating station (co-
owned by DP&L, Duke Energy, and CSP) for alleged 
violations of the CAA. The NOV contained allegations 
consistent with NOVs and complaints that the USEPA 
had recently brought against numerous other coal-
fired utilities in the Midwest. The NOV indicated the 

18  DPL Inc.

 
USEPA may: (1) issue an order requiring compliance 
with the requirements of the Ohio SIP; or (2) bring a 
civil action seeking injunctive relief and civil penalties 
of up to $27,500 per day for each violation. To date, 
neither action has been taken. DP&L cannot predict 
the outcome of this matter or the financial impact this 
matter will have on DP&L.

In December 2007, the Ohio EPA issued a NOV to 

the DP&L-operated Killen generating station (co-owned 
by DP&L and Duke Energy) for alleged violations of the 
CAA. The NOVs alleged deficiencies in the continuous 
monitoring of opacity. We submitted a compliance plan 
to the Ohio EPA on December 19, 2007. To date, no 
further actions have been taken by the Ohio EPA.

On March 13, 2008, Duke Energy, the operator of 

the Zimmer generating station, received a NOV and 
a Finding of Violation (FOV) from the USEPA alleging 
violations of the CAA, the Ohio State Implementation 
Program (SIP) and permits for the Station in areas 
including SO2, opacity and increased heat input. A 
second NOV and FOV with similar allegations was 
issued on November 4, 2010. DP&L is a co-owner of 
the Zimmer generating station and could be affected by 
the eventual resolution of these matters. Duke Energy 
is expected to act on behalf of itself and the co-owners 
with respect to these matters. DP&L is unable to 
predict the outcome of these matters or the financial 
impact that these matters will have on DP&L.

Other Issues Involving Co-Owned Plants

In 2006, DP&L detected a malfunction with its 
emission monitoring system at the DP&L-operated 
Killen generating station (co-owned by DP&L and 
Duke Energy) and ultimately determined its SO2 and 
NOx emissions data were under reported. DP&L 
has petitioned the USEPA to accept an alternative 
methodology for calculating actual emissions for 2005 
and the first quarter of 2006. DP&L has sufficient 
allowances in its general account to cover the 
understatement. Management does not believe the 
ultimate resolution of this matter will have a material 
impact on results of operations, financial condition or 
cash flows.

Notices of Violation Involving Wholly-Owned Plants

In 2007, the Ohio EPA and the USEPA issued NOVs 
to DP&L for alleged violations of the CAA at the O.H. 
Hutchings Station. The NOVs’ alleged deficiencies 
relate to stack opacity and particulate emissions. 
Discussions are under way with the USEPA, the 
U.S. Department of Justice and Ohio EPA. DP&L 

has provided data to those agencies regarding its 
maintenance expenses and operating results. On 
December 15, 2008, DP&L received a request from 
the USEPA for additional documentation with respect 
to those issues and other CAA issues including issues 
relating to capital expenses and any changes in 
capacity or output of the units at the O.H. Hutchings 
Station. During 2009, DP&L continued to submit various 
other operational and performance data to the USEPA 
in compliance with its request. DP&L is currently 
unable to determine the timing, costs or method by 
which the issues may be resolved and continues to 
work with the USEPA on this issue.

On November 18, 2009, the USEPA issued a NOV 

to DP&L for alleged NSR violations of the CAA at the 
O.H. Hutchings Station relating to capital projects 
performed in 2001 involving Unit 3 and Unit 6. DP&L 
does not believe that the two projects described in 
the NOV were modifications subject to NSR. DP&L is 
unable to determine the timing, costs or method by 
which these issues may be resolved and continues to 
work with the USEPA on this issue.

Regulation Matters Related to Water Quality

Clean Water Act – Regulation of Water Intake

On July 9, 2004, the USEPA issued final rules pursuant 
to the Clean Water Act governing existing facilities that 
have cooling water intake structures. The rules require 
an assessment of impingement and/or entrainment of 
organisms as a result of cooling water withdrawal. A 
number of parties appealed the rules to the Federal 
Court of Appeals for the Second Circuit in New York 
and the Court issued an opinion on January 25, 2007 
remanding several aspects of the rule to the USEPA 
for reconsideration. Several parties petitioned the U.S. 
Supreme Court for review of the lower court decision. 
On April 14, 2008, the Supreme Court elected to review 
the lower court decision on the issue of whether the 
USEPA can compare costs with benefits in determining 
the best technology available for minimizing adverse 
environmental impact at cooling water intake structures. 
Briefs were submitted to the Court in the summer of 
2008 and oral arguments were held in December 2008. 
In April 2009, the U.S. Supreme Court ruled that the 
USEPA did have the authority to compare costs with 
benefits in determining best technology available. 
The USEPA is developing proposed regulations and 
anticipates proposing requirements by March 2011 
with final rules in place by mid-2012. We are unable to 
predict the impact this will have on our operations.

DPL Inc.  19

 
Clean Water Act – Regulation of Water Discharge

On May 4, 2004, the Ohio EPA issued a final National 
Pollutant Discharge Elimination System permit (the 
Permit) for J.M. Stuart Station that continued our 
authority to discharge water from the station into the 
Ohio River. During the three-year term of the Permit, 
we conducted a thermal discharge study to evaluate 
the technical feasibility and economic reasonableness 
of water cooling methods other than cooling towers. 
In December 2006, we submitted an application for 
the renewal of the Permit that was due to expire on 
June 30, 2007. In July 2007, we received a draft permit 
proposing to continue our authority to discharge water 
from the station into the Ohio River. On February 5, 
2008, we received a letter from the Ohio EPA indicating 
that they intended to impose a compliance schedule 
as part of the final Permit, that requires us to implement 
one of two diffuser options for the discharge of water 
from the station into the Ohio River as identified in the 
thermal discharge study. Subsequently, representatives 
from DP&L and the Ohio EPA agreed to allow DP&L to 
restrict public access to the water discharge area as an 
alternative to installing one of the diffuser options. Ohio 
EPA issued a revised draft permit that was received on 
November 12, 2008. In December 2008, the USEPA 
requested that the Ohio EPA provide additional 
information regarding the thermal discharge in the draft 
permit. In June 2009, DP&L provided information to the 
USEPA in response to their request to the Ohio EPA. 
In September 2010, the USEPA formally objected to a 
revised permit provided by Ohio EPA due to questions 
regarding the basis for the alternate thermal limitation. 
In December 2010, DP&L requested a public hearing 
on the objection, which USEPA has agreed to conduct. 
If a public hearing is held, it is anticipated that it 
would be scheduled in the first half of 2011. We are 
attempting to resolve this issue with both the USEPA 
and Ohio EPA. The timing for issuance of a final permit 
is uncertain. DP&L is unable to predict the impact this 
will have on its operations.

In September 2009, the USEPA announced that it 
will be revising technology-based regulations governing 
water discharges from steam electric generating 
facilities. The rulemaking included the collection of 
information via an industry-wide questionnaire as well 
as targeted water sampling efforts at selected facilities. 
Subsequent to the information collection effort, it is 
anticipated that the USEPA will release a proposed 
rule by mid-2012 with a final regulation in place by 
early 2014. DP&L is unable to predict the impact this 
rulemaking will have on its operations.

Regulation Matters Related to Land Use and  
Solid Waste Disposal

Regulation of Waste Disposal

In September 2002, DP&L and other parties received 
a special notice that the USEPA considers us to be a 
PRP for the clean-up of hazardous substances at the 
South Dayton Dump landfill site. In August 2005, DP&L 
and other parties received a general notice regarding 
the performance of a Remedial Investigation and 
Feasibility Study (RI/FS) under a Superfund Alternative 
Approach. In October 2005, DP&L received a special 
notice letter inviting it to enter into negotiations with 
the USEPA to conduct the RI/FS. No recent activity 
has occurred with respect to that notice or PRP status. 
However, on August 25, 2009, the USEPA issued 
an Administrative Order requiring that access to 
DP&L’s service center building site, which is across 
the street from the landfill site, be given to the USEPA 
and the existing PRP group to help determine the 
extent of the landfill site’s contamination as well as to 
assess whether certain chemicals used at the service 
center building site might have migrated through 
groundwater to the landfill site. DP&L has granted 
such access and drilling of soil borings and installation 
of monitoring wells occurred in late 2009 and early 
2010. DP&L believes the chemicals used at its service 
center building site were appropriately disposed of 
and have not contributed to the contamination at the 
South Dayton Dump landfill site. On May 24, 2010, 
three members of the existing PRP group, Hobart 
Corporation, Kelsey-Hayes Company and NCR 
Corporation, filed a civil complaint in the United States 
District Court for the Southern District of Ohio against 
DP&L and numerous other defendants alleging that 
DP&L and the other defendants contributed to the 
contamination at the South Dayton Dump landfill site 
and seeking reimbursement of the PRP group’s costs 
associated with the investigation and remediation of 
the site. DP&L filed a motion to dismiss the complaint 
and intends to vigorously defend against any claim 
that it has any financial responsibility to remediate 
conditions at the landfill site. On February 10, 2011, the 
Court dismissed claims against DP&L that related to 
allegations that chemicals used by DP&L at its service 
center contributed to the landfill site’s contamination. 
The Court, however, did not dismiss claims alleging 
financial responsibility for remediation costs based on 
hazardous substances from DPL that were allegedly 
directly delivered by truck to the landfill. While DP&L is 
unable to predict the outcome of these matters, if DP&L 
were required to contribute to the clean-up of the site, it 
could have a material adverse effect on us.

20  DPL Inc.

 
In December 2003, DP&L and other parties 

received a special notice that the USEPA considers us 
to be a PRP for the clean-up of hazardous substances 
at the Tremont City landfill site. Information available 
to DP&L does not demonstrate that it contributed 
hazardous substances to the site. While DP&L is 
unable to predict the outcome of this matter, if DP&L 
were required to contribute to the clean-up of the site, it 
could have a material adverse effect on us.

On April 7, 2010, the USEPA published an Advance 

Notice of Proposed Rulemaking (ANPRM) announcing 
that it is reassessing existing regulations governing the 
use and distribution in commerce of polychlorinated 
biphenyls (PCB). While this reassessment is in the early 
stages and the USEPA is seeking information from 
potentially affected parties on how it should proceed, 
the outcome may have a material effect on DP&L. At 
present, DP&L is unable to predict the impact this 
initiative will have on its operations.

Regulation of Ash Ponds

During 2008, a major spill occurred at an ash pond 
owned by the Tennessee Valley Authority (TVA) as a 
result of a dike failure. The spill generated a significant 
amount of national news coverage, and support for 
tighter regulations for the storage and handling of coal 
combustion products. DP&L has ash ponds at the 
Killen, O.H. Hutchings and J.M. Stuart Stations which it 
operates, and also at generating stations operated by 
others but in which DP&L has an ownership interest.

During March 2009, the USEPA, through a formal 
Information Collection Request, collected information on 
ash pond facilities across the country, including those 
at Killen and J.M. Stuart Stations. Subsequently, the 
USEPA collected similar information for O.H. Hutchings 
Station. In October 2009, the USEPA conducted an 
inspection of the J.M. Stuart Station ash ponds. In 
March 2010, the USEPA issued a final report from the 
inspection including recommendations relative to the 
J.M. Stuart Station ash ponds. In May 2010, DP&L 
responded to the USEPA final inspection report with our 
plans to address the recommendations.

Similarly, in August 2010, the USEPA conducted an 
inspection of the O.H. Hutchings Station ash ponds. The 
draft report relating to the inspection was received in 
November 2010 and DP&L provided comments on the 
draft report in December 2010. DP&L is unable to predict 
the outcome this inspection will have on its operations.

In addition, as a result of the TVA ash pond spill, there 
has been increasing advocacy to regulate coal combustion 
byproducts under the Resource Conservation Recovery 
Act (RCRA). On June 21, 2010, the USEPA published a 
proposed rule seeking comments on two options under 

consideration for the regulation of coal combustion 
products including regulating the material as a hazardous 
waste under RCRA Subtitle C or as a solid waste under 
RCRA Subtitle D. DP&L is unable to predict the financial 
impact of this regulation, but if coal combustion byproducts 
are regulated as hazardous waste, it is expected to have a 
material adverse impact on operations.

Other Legal Matters
In February 2007, DP&L filed a lawsuit against a coal 
supplier seeking damages incurred due to the supplier’s 
failure to supply approximately 1.5 million tons of coal to 
two jointly owned plants under a coal supply agreement, 
of which approximately 570 thousand tons was DP&L’s 
share. DP&L obtained replacement coal to meet its 
needs. The supplier has denied liability, and is currently 
in federal bankruptcy proceedings in which DP&L is 
participating as an unsecured creditor. DP&L is unable 
to determine the ultimate resolution of this matter. 
DP&L has not recorded any assets relating to possible 
recovery of costs in this lawsuit.

On May 16, 2007, DPL filed a claim with Energy 

Insurance Mutual (EIM) to recoup legal costs 
associated with our litigation against certain former 
executives. On February 15, 2010, after having 
engaged in both mediation and arbitration, DPL and 
EIM entered into a settlement agreement resolving 
all coverage issues and finalizing all obligations in 
connection with the claim, under which DPL received 
$3.4 million (net of associated expenses).

In connection with DP&L and other utilities 
joining PJM, in 2006 the FERC ordered utilities to 
eliminate certain charges to implement transitional 
payments, known as SECA, effective December 1, 
2004 through March 31, 2006, subject to refund. 
Through this proceeding, DP&L was obligated to pay 
SECA charges to other utilities, but received a net 
benefit from these transitional payments. A hearing 
was held and an initial decision was issued in August 
2006. A final FERC order on this issue was issued 
on May 21, 2010 that substantially supports DP&L’s 
and other utilities’ position that SECA obligations 
should be paid by parties that used the transmission 
system during the timeframe stated above. DP&L, 
along with other transmission owners in PJM and the 
Midwest Independent System Operator (MISO) made 
a compliance filing at FERC on August 19, 2010 that 
fully demonstrated all payment obligations to and from 
all parties within PJM and the MISO. The FERC has 
made no ruling regarding the compliance filing and 
some parties have requested rehearing by FERC of its 
May 21, 2010 order. It is expected that any order on the 
compliance filing and any order regarding the rehearing 

DPL Inc.  21

 
request will be appealed for Court review. Prior to this final order being issued, DP&L entered into a significant 
number of bilateral settlement agreements with certain parties to resolve the matter, which by design will be 
unaffected by the final decision. Further, in October 2010, DP&L entered into another settlement agreement to settle 
a portion of SECA amounts still owed to DP&L. With respect to unsettled claims, DP&L management believes it has 
deferred as a regulatory liability the appropriate amounts that are subject to refund (see SECA net revenue subject 
to refund within Note 3 of Notes to Consolidated Financial Statements) and therefore the results of this proceeding 
are not expected to have a material adverse effect on DP&L’s results of operations.

Capital Expenditures for Environmental Matters
Test operations of the FGD equipment on our jointly-owned Conesville Unit 4 were completed in November 2009. 
The equipment is currently in service.

DPL’s construction additions were approximately $151 million, $145 million and $228 million in 2010, 2009 
and 2008, respectively, and are expected to approximate $310 million in 2011. Planned construction additions for 
2011 relate primarily to new investments in and upgrades to DP&L’s power plant equipment and transmission and 
distribution system.

DP&L’s construction additions were $148 million, $144 million and $225 million in 2010, 2009 and 2008, 
respectively, and are expected to approximate $300 million in 2011. Planned construction additions for 2011 
relate primarily to new investments in and upgrades to DP&L’s power plant equipment and transmission and 
distribution system.

All environmental additions made during the past three years pertain to DP&L and approximated $12 million, 

$21 million and $90 million in 2010, 2009 and 2008, respectively.

Electric Sales and Revenues
The following table sets forth DPL’s, DP&L’s and DPLER’s electric sales and revenues for the years ended 
December 31, 2010, 2009 and 2008, respectively.

DPL

DP&L (a)

DPLER (b)

2010

2009

2008

2010

2009

2008

2010

2009

2008

Electric sales (millions of kWh)
Residential
Commercial
Industrial
Other retail

5,522
3,842
3,605
1,437

Total retail

Wholesale

Total

14,406

2,831

17,237

5,120
3,678
3,353
1,386

13,537

3,130

16,667

5,533
3,959
3,986
1,454

14,932

2,240

17,172

5,522
3,741
3,582
1,432

14,277

2,806

17,083

5,120
3,678
3,353
1,386

13,537

3,053

16,590

5,533
3,959
3,986
1,454

14,932

2,173

17,105

1
1,194
2,476
875

4,546

–

–
68
983
413

1,464

–

4,546

1,464

–
421
2,322
469

3,212

–

3,212

Operating revenues  

($ in thousands)

$

Residential
Commercial
Industrial
Other retail
Other miscellaneous 
revenues

Total retail

Wholesale
RTO revenues
Other revenues

Total

687,932 $
384,385
260,763
113,550

560,223 $
332,808
228,458
98,781

544,561
332,010
240,041
97,592

$

687,891 $
304,078
118,517
64,240

560,223 $
329,006
186,293
82,749

544,561
308,934
133,832
78,905

$

41 $

– $

80,307
142,246
52,811

3,802
42,165
18,871

–
23,076
106,209
21,338

9,814

8,766

9,042

10,723

8,966

9,046

57

–

64

1,456,444

1,229,036

1,223,246

1,185,449

1,167,237

1,075,278

275,462

64,838

150,687

142,312
272,832
11,534

149,874
217,357
11,080
$ 1,883,122 $ 1,588,921 $ 1,601,557

122,519
225,677
11,689

365,798
239,274
–

293,500
204,074
–
$ 1,790,521 $ 1,550,362 $ 1,572,852

181,871
201,254
–

–
1,503
27

–
31
88
$ 276,992 $ 65,548 $ 150,806

–
615
95

Electric customers at  
end of period

Residential
Commercial
Industrial
Other

Total

455,572
50,764
1,800
6,742

514,878

456,144
50,141
1,773
6,577

514,635

456,770
50,190
1,797
6,517

515,274

455,572
50,155
1,769
6,739

514,235

456,144
50,141
1,773
6,577

514,635

456,770
50,190
1,797
6,517

515,274

33
7,205
564
1,200

9,002

–
223
44
123

390

–
432
184
126

742

(a) DP&L sold 4,417 million kWh, 1,464 million kWh and 3,212 million kWh of power to DPLER (a subsidiary of DPL) during the years ended 
December 31, 2010, 2009 and 2008, respectively, which are not included in DP&L wholesale sales volumes in the chart above. These kWh sales also 
relate to DP&L retail customers within the DP&L service territory for distribution services and their inclusion in wholesale sales would result in a double 
counting of kWh volume. The dollars of operating revenues associated with these sales are classified as wholesale revenues on DP&L’s Financial 
Statements and retail revenues on DPL’s Consolidated Financial Statements.

(b) This chart includes all sales of DPLER, both within and outside of the DP&L service territory.

22  DPL Inc.

 
Item 1A Risk Factors

This annual report and other documents that we file 
with the SEC and other regulatory agencies, as well 
as other written or oral statements we may make 
from time to time, contain information based on 
management’s beliefs and include forward-looking 
statements (within the meaning of the Private Securities 
Litigation Reform Act of 1995) that involve a number 
of known and unknown risks, uncertainties and 
assumptions. These forward-looking statements are 
not guarantees of future performance and there are a 
number of factors including, but not limited to, those 
listed below, which could cause actual outcomes and 
results to differ materially from the results contemplated 
by such forward-looking statements. We do not 
undertake any obligation to publicly update or revise 
any forward-looking statements, whether as a result 
of new information, future events or otherwise. These 
forward-looking statements are generally identified 
by terms and phrases such as “anticipate,” “believe,” 
“intend,” “estimate,” “expect,” “continue,” “should,” 
“could,” “may,” “plan,” “project,” “predict,” “will” and 
similar expressions.

Future operating results are subject to fluctuations 
based on a variety of factors, including but not limited 
to: unusual weather conditions; catastrophic weather-
related damage; unscheduled generation outages; 
changes in wholesale power sales prices; unusual 
maintenance or repairs; changes in fuel and purchased 
power costs, emissions allowance costs, or availability 
constraints; environmental compliance; and electric 
transmission system constraints.

The following is a listing of specific risk factors that 

DPL and DP&L consider to be the most significant to 
your decision to invest in our securities. If any of these 
events occur or are continuing, our business, results of 
operations, financial condition and cash flows could be 
materially affected.

Our customers have recently begun to select 
alternative electric generation service providers,  
as permitted by Ohio legislation.

Customers can elect to buy transmission and 
generation service from a PUCO-certified CRES 
provider offering services to customers in DP&L’s 
service territory. DPLER, a wholly-owned subsidiary 
of DPL, is one of the PUCO-certified CRES providers 
and accounted for approximately 97% of the total retail 
energy supplied by CRES providers within DP&L’s 
service territory in 2010. Unaffiliated CRES providers 
also have been certified to provide energy in DP&L’s 
service territory and during 2010, approximately 

800 DP&L customers switched their generation 
service to these providers. Customer switching from 
DP&L to DPLER reduces DPL’s revenues since the 
generation rates charged by DPLER are less than 
the rates charged by DP&L. Increased competition 
by unaffiliated CRES providers in our service territory 
for retail generation service could result in the loss 
of existing customers and reduced revenues and 
increased costs to retain or attract customers. 
Decreased revenues and increased costs due to 
continued customer switching and customer loss 
could have a material adverse effect on our results of 
operations, financial condition and cash flows. The 
following are a few of the factors that could result in 
increased switching by customers to PUCO-certified 
CRES providers in the future:

■ Low wholesale price levels may lead to existing CRES 
providers becoming more active in our service territory, 
and additional CRES providers entering our territory.

■ We could also experience customer switching 
through “governmental aggregation,” where a 
municipality may contract with a CRES provider to 
provide generation service to the customers located 
within the municipal boundaries.

We are subject to extensive laws and local, state and 
federal regulation, as well as related litigation, that 
could affect our operations and costs.

We are subject to extensive laws and regulation by 
federal, state and local authorities, such as the PUCO, 
the CFTC, the USEPA, the Ohio EPA, the FERC, the 
SEC, the Department of Labor and the Internal Revenue 
Service, among others. Regulations affect almost every 
aspect of our business, including in the areas of the 
environment, health and safety, cost recovery and 
rate making, securities, corporate governance, public 
disclosure and reporting and taxation. New laws and 
regulations, and new interpretations of existing laws 
and regulations, are ongoing and we generally cannot 
predict the future course of changes in this regulatory 
environment or the ultimate effect that this changing 
regulatory environment will have on our business. 
Complying with this regulatory environment requires us 
to expend a significant amount of funds and resources. 
The failure to comply with this regulatory environment 
could subject us to substantial financial costs and 
penalties and changes, either forced or voluntary, in 
the way we operate our business. Additional detail 
about the effect of this regulatory environment on 
our operations is included in the risk factors set forth 
below. In the normal course of business, we are also 
subject to various lawsuits, actions, proceedings, 

DPL Inc.  23

 
claims and other matters asserted under this regulatory 
environment or otherwise, which require us to expend 
significant funds to address, the outcomes of which 
are uncertain and the adverse resolutions of which 
could have a material adverse effect on our results of 
operations, financial condition and cash flows.

The costs we can recover and the return on capital we 
are permitted to earn for certain aspects of our business 
are regulated and governed by the laws of Ohio and the 
rules, policies and procedure of the PUCO.

The costs we can recover and the return on capital 
we are permitted to earn for certain aspects of our 
business are regulated and governed by the laws of 
Ohio and the rules, policies and procedures of the 
PUCO. On May 1, 2008, SB 221, an Ohio electric 
energy bill, was signed by the Governor of Ohio and 
became effective July 31, 2008. This law, among other 
things, required all Ohio distribution utilities to file 
either an ESP or MRO, and established a significantly 
excessive earnings test for Ohio public utilities that 
compares the utility’s earnings to the earnings of other 
companies with similar business and financial risks. 
The PUCO approved DP&L’s filed ESP on June 24, 
2009. DP&L’s ESP provides, among other things, 
that DP&L’s existing rate plan structure will continue 
through 2012; that DP&L may seek recovery for 
adjustments to its existing rate plan structure for costs 
associated with storm damage, regulatory and tax 
changes, new climate change or carbon regulations, 
fuel and purchased power and certain other costs; 
and that SB 221’s significantly excessive earnings 
test will apply in 2013 based upon DP&L’s 2012 
earnings. DP&L’s ESP and certain filings made by 
us in connection with this plan are further discussed 
under “Ohio Retail Rates” in Item 1 – Competition 
and Regulation. In addition, as the local distribution 
utility, DP&L has an obligation to serve customers 
within its certified territory and under the terms of 
its ESP Stipulation, it is the provider of last resort 
(POLR) for standard offer service. DP&L’s current 
rate structure provides for a nonbypassable charge to 
compensate DP&L for this POLR obligation. The PUCO 
may decrease or discontinue this POLR rate charge at 
some time in the future.

While rate regulation is premised on full recovery 
of prudently incurred costs and a reasonable rate of 
return on invested capital, there can be no assurance 
that the PUCO will agree that all of our costs have 
been prudently incurred or are recoverable or that the 
regulatory process in which rates are determined will 
always result in rates that will produce a full or timely 
recovery of our costs and permitted rates of return. 

Certain of our cost recovery riders are also by-passable 
by some of our customers who switched to a CRES 
provider. Accordingly, the revenue DP&L receives 
may or may not match its expenses at any given time. 
Therefore, DP&L could be subject to prevailing market 
prices for electricity and would not necessarily be able 
to charge rates that produce timely or full recovery of its 
expenses. Changes in, or reinterpretations of, the laws, 
rules, policies and procedures that set electric rates, 
permitted rates of return and POLR service; changes in 
DP&L’s rate structure and its ability to recover amounts 
for environmental compliance, POLR obligations, 
reliability initiatives, fuel and purchased power (which 
account for a substantial portion of our operating 
costs), customer switching, capital expenditures and 
investments and other costs on a full or timely basis 
through rates; and changes to the frequency and timing 
of rate increases could have a material adverse effect 
on our results of operations, financial condition and 
cash flows.

Our increased costs due to advanced energy and 
energy efficiency requirements may not be fully 
recoverable in the future.

SB 221 contains targets relating to advanced energy, 
renewable energy, peak demand reduction and energy 
efficiency standards. The standards require that, by the 
year 2025 and each year thereafter, 25% of the total 
number of kWh of electricity sold by the utility to retail 
electric consumers must come from alternative energy 
resources, which include “advanced energy resources” 
such as distributed generation, clean coal, advanced 
nuclear, energy efficiency and fuel cell technology; and 
“renewable energy resources” such as solar, hydro, 
wind, geothermal and biomass. At least half of the 25% 
must be generated from renewable energy resources, 
including solar energy. Annual renewable energy 
standards began in 2009 with increases in required 
percentages each year through 2024. The advanced 
energy standard must be met by 2025 and each year 
thereafter. Annual targets for energy efficiency began 
in 2009 and require increasing energy reductions each 
year compared to a baseline energy usage, up to 
22.3% by 2025. Peak demand reduction targets began 
in 2009 with increases in required percentages each 
year, up to 7.75% by 2018. The advanced energy and 
renewable energy standards have increased our power 
supply costs and are expected to continue to increase 
(and could materially increase) these costs. Pursuant 
to DP&L’s approved ESP, DP&L is entitled to recover 
costs associated with its alternative energy plans, as 
well as its energy efficiency and demand response 
programs. DP&L began recovering these costs in 

24  DPL Inc.

 
2009. If in the future we are unable to timely or fully 
recover these costs, it could have a material adverse 
effect on our results of operations, financial condition 
and cash flows. In addition, if we were found not to be 
in compliance with these standards, monetary penalties 
could apply. These penalties are not permitted to be 
recovered from customers and significant penalties 
could have a material adverse effect on our results of 
operations, financial condition and cash flows. The 
demand reduction and energy efficiency standards by 
design result in reduced energy and demand that could 
adversely affect our results of operations, financial 
condition and cash flows.

The availability and cost of fuel has experienced and 
could continue to experience significant volatility and 
we may not be able to hedge the entire exposure of our 
operations from fuel availability and price volatility.

We purchase coal, natural gas and other fuel from 
a number of suppliers. The coal market in particular 
has experienced significant price volatility in the last 
several years. We are now in a global market for coal 
in which our domestic price is increasingly affected by 
international supply disruptions and demand balance. 
Coal exports from the U.S. have increased significantly 
at times in recent years. In addition, domestic issues 
like government-imposed direct costs and permitting 
issues that affect mining costs and supply availability, 
the variable demand of retail customer load and the 
performance of our generation fleet have an impact 
on our fuel procurement operations. Our approach 
is to hedge the fuel costs for our anticipated electric 
sales. However, we may not be able to hedge the entire 
exposure of our operations from fuel price volatility. As 
of the date of this report, DPL has substantially all of 
the total expected coal volume needed to meet its retail 
and firm wholesale sales requirements for 2011 under 
contract. Historically, some of our suppliers and buyers 
of fuel have not performed on their contracts and have 
failed to deliver or accept fuel as specified under their 
contracts. To the extent our suppliers and buyers do 
not meet their contractual commitments and, as a 
result of such failure or otherwise, we cannot secure 
adequate fuel or sell excess fuel in a timely or cost-
effective manner or we are not hedged against price 
volatility, we could have a material adverse impact 
on our results of operations, financial condition and 
cash flows. In addition, DP&L is a co-owner of certain 
generation facilities where it is a non-operating owner. 
DP&L does not procure or have control over the fuel for 
these facilities, but is responsible for its proportionate 
share of the cost of fuel procured at these facilities. Co-
owner operated facilities do not always have realized 

fuel costs that are equal to our co-owners’ projections, 
and we are responsible for our proportionate share of 
any increase in actual fuel costs. Pursuant to its ESP for 
SSO retail customers, DP&L implemented a fuel and 
purchased power recovery mechanism beginning on 
January 1, 2010, which subjects our recovery of fuel 
and purchased power costs to tracking and adjustment 
on a seasonal quarterly basis. If in the future we 
are unable to timely or fully recover our fuel costs, it 
could have a material adverse effect on our results of 
operations, financial condition and cash flows.

Our use of derivative and nonderivative contracts 
may not fully hedge our generation assets, customer 
supply activities, or other market positions against 
changes in commodity prices, and our hedging 
procedures may not work as planned.

We transact coal, power and other commodities to 
hedge our positions in these commodities. These 
trades are impacted by a range of factors, including 
variations in power demand, fluctuations in market 
prices, market prices for alternative commodities 
and optimization opportunities. We have attempted 
to manage our commodities price risk exposure 
by establishing and enforcing risk limits and risk 
management policies. Despite our efforts, however, 
these risk limits and management policies may not 
work as planned and fluctuating prices and other 
events could adversely affect our results of operations, 
financial condition and cash flows. As part of our risk 
management, we use a variety of non-derivative and 
derivative instruments, such as swaps, futures and 
forwards, to manage our market risks. We also use 
interest rate derivative instruments to hedge against 
interest rate fluctuations related to our debt. In the 
absence of actively quoted market prices and pricing 
information from external sources, the valuation of some 
of these derivative instruments involves management’s 
judgment or use of estimates. As a result, changes 
in the underlying assumptions or use of alternative 
valuation methods could affect the reported fair value 
of some of these contracts. We could also recognize 
financial losses as a result of volatility in the market 
values of these contracts or if a counterparty fails to 
perform, which could result in a material adverse effect 
on our results of operations, financial condition and 
cash flows.

The Dodd-Frank Act contains significant requirements 
related to derivatives that, among other things, 
could reduce the cost effectiveness of entering into 
derivative transactions.

In July 2010, The Dodd-Frank Wall Street Reform and 
Consumer Protection Act (Dodd-Frank Act) was signed 
into law. The Dodd-Frank Act contains significant 

DPL Inc.  25

 
requirements relating to derivatives, including, among 
others, a requirement that certain transactions be 
cleared on exchanges that would necessitate the 
posting of cash collateral for these transactions. 
The Dodd-Frank Act provides a potential exception 
from these clearing and cash collateral requirements 
for commercial end-users. The Dodd-Frank Act 
requires the CFTC to establish rules to implement 
the Dodd-Frank Act’s requirements and exceptions. 
Requirements to post collateral could reduce the cost 
effectiveness of entering into derivative transactions to 
reduce commodity price and interest rate volatility or 
could increase the demands on our liquidity or require 
us to increase our levels of debt to enter into such 
derivative transactions. Even if we were to qualify for an 
exception from these requirements, our counterparties 
that do not qualify for the exception may pass along 
any increased costs incurred by them through higher 
prices and reductions in unsecured credit limits. The 
occurrence of any of these events could have an 
adverse effect on our results of operations, financial 
condition and cash flows.

We are subject to numerous environmental laws 
and regulations that require capital expenditures, 
increase our cost of operations and may expose us  
to environmental liabilities.

Our operations and facilities (both wholly-owned 
and co-owned with others) are subject to numerous 
and extensive federal, state and local environmental 
laws and regulations relating to air quality (such as 
reductions in NOx, SO2 and particulate emissions), 
water quality, wastewater discharge, solid waste and 
hazardous waste. We could also become subject 
to additional environmental laws and regulations 
in the future (such as reductions in mercury and 
other hazardous air pollutants, SO3 (sulfur trioxide), 
regulation of ash generated from coal-based 
generating stations and reductions in greenhouse 
gas emissions as discussed in more detail in the next 
risk factor). With respect to our largest generation 
station, the J.M. Stuart Station, we are also subject to 
continuing compliance requirements related to NOx, 
SO2 and particulate matter emissions under DP&L’s 
consent decree with the Sierra Club. Compliance with 
these laws, regulations and other requirements requires 
us to expend significant funds and resources. These 
expenditures have been significant in the past and we 
expect that they could also be significant in the future. 
Complying with these numerous requirements could at 
some point become prohibitively expensive and result 
in our shutting down (temporarily or permanently) or 
altering the operation of our facilities. Environmental 

laws and regulations also generally require us to 
obtain and comply with a wide variety of environmental 
licenses, permits, inspections and other approvals. If 
we are not able to timely obtain, maintain or comply 
with all licenses, permits, inspections and approvals 
required to operate our business, then our operations 
could be prevented, delayed or subject to additional 
costs. Failure to comply with environmental laws, 
regulations and other requirements may result in the 
imposition of fines and penalties and the imposition 
of stricter environmental standards and controls and 
other injunctive measures affecting operating assets. In 
addition, any alleged violation of these laws, regulations 
and other requirements may require us to expend 
significant resources to defend against any such 
alleged violations. We own a non-controlling interest 
in several generating stations operated by our co-
owners. As a non-controlling owner in these generating 
stations, we are responsible for our pro rata share of 
expenditures for complying with environmental laws, 
regulations and other requirements, but have limited 
control over the compliance measures taken by our 
co-owners. DP&L has an EIR in place as part of its 
existing rate plan structure, the last increase of which 
occurred in 2010 and remains at that level through 
2012. In addition, DP&L’s ESP permits it to seek 
recovery for costs associated with new climate change 
or carbon regulations. While we expect to recover 
certain environmental costs and expenditures from 
customers, if in the future we are unable to fully recover 
our costs in a timely manner or the SSO retail riders are 
by-passable or additional customer switching occurs, 
we could have a material adverse impact to our results 
of operations, financial condition and cash flows. In 
addition, if we were found not to be in compliance with 
these environmental laws, regulations or requirements, 
any penalties that would apply would likely not be 
recoverable from customers and could have a material 
adverse effect on our results of operations, financial 
condition and cash flows.

If legislation or regulations are passed at the federal 
or state levels imposing mandatory reductions of 
Greenhouse Gasses on generation facilities, we could 
be required to make large additional capital investments.

There is an on-going concern nationally and 
internationally among regulators, investors and others 
concerning global climate change and the contribution 
of emissions of GHGs, including most significantly 
CO2. This concern has led to increased interest in 
legislation and action at the federal and state levels 
and litigation, including a declaration by the USEPA 
that GHGs pose a danger to the public health that 

26  DPL Inc.

 
the USEPA believes allows it to directly regulate 
greenhouse emissions. There have been various GHG 
legislative proposals introduced in Congress and there 
is growing consensus that some form of legislation of 
GHG emissions will be approved at the federal level 
that could result in substantial additional costs in the 
form of taxes or emission allowances. Approximately 
99% of the energy we produce is generated by coal. 
If legislation or regulations are passed at the federal 
or state levels imposing mandatory reductions of CO2 
and other GHGs on generation facilities, we could be 
required to make large additional capital investments. 
Legislation and regulations could also impair the value 
of our generation stations or make some of these 
stations uneconomical to maintain or operate and 
could raise uncertainty about the future viability of 
fossil fuels, particularly coal, as an energy source for 
new and existing generation stations. Although DP&L 
is permitted under its current ESP to seek recovery of 
costs associated with new climate change or carbon 
regulations, our inability to fully or timely recover such 
costs could have a material adverse effect on our 
results of operations, financial condition and cash flows.

Fluctuations in our sales of coal and excess emission 
allowances could cause a material adverse effect on 
our results of operations, financial condition and cash 
flows for any particular period.

DP&L sells coal to other parties from time to time 
for reasons that include maintaining an appropriate 
balance between projected supply and projected use 
and as part of a coal optimization program where coal 
under contract may be resold and replaced with other 
coal or power available in the market with a favorable 
price spread, adjusted for any quality differentials. 
During 2010 and 2009, DP&L realized net gains from 
these sales. Sales of coal are impacted by a range of 
factors, including price volatility among the different 
coal basins and qualities of coal, variations in power 
demand and the market price of power compared to 
the cost to produce power. These factors could cause 
the amount and price of coal we sell to fluctuate.

DP&L may sell its excess emission allowances, 

including NOx and SO2 emission allowances, from 
time to time. Sales of any excess emission allowances 
are impacted by a range of factors, such as general 
economic conditions, fluctuations in market demand, 
availability of excess inventory available for sale and 
changes to the regulatory environment, including the 
status of the USEPA’s CAIR. These factors could cause 
the amount and price of excess emission allowances 
we sell to fluctuate, which could cause a material 
adverse effect on our results of operations, financial 

condition and cash flows for any particular period. 
There has been overall reduced trading activity in  
the annual NOx and SO2 emission allowance trading 
markets in recent years. This impact on the emission 
allowance trading market was due, in large part, to 
a court order calling into question the USEPA’s CAIR 
annual NOx and SO2 emission allowance trading 
programs and requiring the USEPA to issue new 
regulations to address the court order. The adoption 
of new regulations that could regulate emissions 
or establish or modify emission allowance trading 
programs, like the USEPA’s proposed Clean Air 
Transport Rule to replace CAIR, could impact the 
emission allowance trading markets and have a 
material effect on DP&L’s emission allowance sales.

The operation and performance of our facilities 
are subject to various events and risks that could 
negatively impact our business.

The operation and performance of our generation, 
transmission and distribution facilities and equipment 
is subject to various events and risks, such as 
the potential breakdown or failure of equipment, 
processes or facilities, fuel supply or transportation 
disruptions, the loss of cost-effective disposal options 
for solid waste generated by our facilities (such as 
coal ash and gypsum), accidents, injuries, labor 
disputes or work stoppages by employees, operator 
error, acts of terrorism or sabotage, construction 
delays or cost overruns, shortages of or delays in 
obtaining equipment, material and labor, operational 
restrictions resulting from environmental limitations 
and governmental interventions, performance below 
expected or required levels, weather-related and other 
natural disruptions, vandalism, events occurring on 
the systems of third parties that interconnect to and 
affect our system and the increased maintenance 
requirements, costs and risks associated with our aging 
generation units. Our results of operations, financial 
condition and cash flows could have a material adverse 
impact due to the occurrence or continuation of 
these events.

Diminished availability or performance of our 
transmission and distribution facilities could result in 
reduced customer satisfaction and regulatory inquiries 
and fines, which could have a material adverse effect 
on our results of operations, financial condition and 
cash flows. Operation of our owned and co-owned 
generating stations below expected capacity levels, 
or unplanned outages at these stations, could cause 
reduced energy output and efficiency levels and likely 
result in lost revenues and increased expenses that 
could have a material adverse effect on our results 

DPL Inc.  27

 
of operations, financial condition and cash flows. In 
particular, since over 50% of our base-load generation 
is derived from co-owned generation stations operated 
by our co-owners, poor operational performance by our 
co-owners, misalignment of co-owners’ interests or lack 
of control over costs (such as fuel costs) incurred at 
these stations could have an adverse effect on us. We 
have constructed and placed into service FGD facilities 
at most of our base-load generating stations. If there 
is significant operational failure of the FGD equipment 
at the generating stations, we may not be able to meet 
emission requirements at some of our generating 
stations or, at other stations, it may require us to 
burn more expensive cleaner coal or utilize emission 
allowances. These events could result in a substantial 
increase in our operating costs. Depending on the 
degree, nature, extent, or willfulness of any failure to 
comply with environmental requirements, including 
those imposed by the Consent Decree, such non-
compliance could result in the imposition of penalties or 
the shutting down of the affected generating stations, 
which could have a material adverse effect on our 
results of operations, financial condition and cash flows.
Asbestos and other regulated substances are, 

and may continue to be, present at our facilities 
where suitable alternative materials are not available. 
Although we believe that any asbestos at our facilities 
is contained and suitable, we have been named as a 
defendant in asbestos litigation, which at this time is 
not material to us. The continued presence of asbestos 
and other regulated substances at these facilities could 
result in additional litigation being brought against 
us, which could have a material adverse effect on our 
results of operations, financial condition and cash flows.

If we were found not to be in compliance with 
the mandatory reliability standards, we could be 
subject to sanctions, including substantial monetary 
penalties, which likely would not be recoverable from 
customers through regulated rates and could have a 
material adverse effect on our results of operations, 
financial condition and cash flows.

As an owner and operator of a bulk power transmission 
system, DP&L is subject to mandatory reliability 
standards promulgated by the NERC and enforced by 
the FERC. The standards are based on the functions 
that need to be performed to ensure the bulk power 
system operates reliably and is guided by reliability and 
market interface principles. In addition, DP&L is subject 
to Ohio reliability standards and targets. Compliance 
with reliability standards subjects us to higher operating 
costs or increased capital expenditures. While we 
expect to recover costs and expenditures from 
customers through regulated rates, there can be no 

assurance that the PUCO will approve full recovery in a 
timely manner. If we were found not to be in compliance 
with the mandatory reliability standards, we could be 
subject to sanctions, including substantial monetary 
penalties, which likely would not be recoverable from 
customers through regulated rates and could have a 
material adverse effect on our results of operations, 
financial condition and cash flows.

Our financial results may fluctuate on a seasonal and 
quarterly basis or as a result of severe weather.

Weather conditions significantly affect the demand for 
electric power. In our Ohio service territory, demand 
for electricity is generally greater in the summer 
months associated with cooling and in the winter 
months associated with heating as compared to 
other times of the year. Unusually mild summers and 
winters could therefore have an adverse effect on our 
results of operations, financial condition and cash 
flows. In addition, severe or unusual weather, such as 
hurricanes and ice or snow storms, may cause outages 
and property damage that may require us to incur 
additional costs that may not be insured or recoverable 
from customers. While DP&L is permitted to seek 
recovery of storm damage costs under its ESP, if DP&L 
is unable to fully recover such costs in a timely manner, 
it could have a material adverse effect on our results of 
operations, financial condition and cash flows.

Our membership in a regional transmission 
organization presents risks that could have a material 
adverse effect on our results of operations, financial 
condition and cash flows.

On October 1, 2004, in compliance with Ohio law, 
DP&L turned over control of its transmission functions 
and fully integrated into PJM, a regional transmission 
organization. The price at which we can sell our 
generation capacity and energy is now dependent on 
a number of factors, which include the overall supply 
and demand of generation and load, other state 
legislation or regulation, transmission congestion, and 
PJM’s business rules. While we can continue to make 
bilateral transactions to sell our generation through 
a willing-buyer and willing-seller relationship, any 
transactions that are not pre-arranged are subject 
to market conditions at PJM. To the extent we sell 
electricity into the power markets on a contractual 
basis, we are not guaranteed any rate of return on 
our capital investments through mandated rates. The 
PJM RPM base residual auction for the 2013/2014 and 
2012/2013 periods cleared at a per megawatt price of 
$28/day and $16/day, respectively, for our RTO area. 
Prior to these auctions, the per megawatt prices for 

28  DPL Inc.

 
the 2011/2012 and 2010/2011 periods were $110/day 
and $174/day, respectively. The results of the PJM 
RPM base residual auction are impacted by the supply 
and demand of generation and load and also may 
be impacted by congestion and PJM rules relating to 
bidding for Demand Response and Energy Efficiency 
resources. Auction prices could fluctuate substantially 
over relatively short periods of time and adversely 
affect our results of operations, financial condition and 
cash flows. We cannot predict the outcome of future 
auctions, but if the auction prices are sustained at low 
levels, our results of operations, financial condition and 
cash flows could have a material adverse impact.

The rules governing the various regional power 
markets may also change from time to time which could 
affect our costs and revenues and have a material 
adverse effect on our results of operations, financial 
condition and cash flows. We may be required to 
expand our transmission system according to decisions 
made by PJM rather than our internal planning process. 
While PJM transmission rates were initially designed to 
be revenue neutral, various proposals and proceedings 
currently taking place at FERC may cause transmission 
rates to change from time to time. In addition, PJM has 
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 us. We also incur fees and costs to 
participate in PJM.

SB 221 includes a provision that allows electric 
utilities to seek and obtain deferral and recovery of RTO 
related charges. Therefore, most if not all of the above 
costs are currently being recovered through our SSO 
retail rates. If in the future, however, we are unable to 
defer or recover all of these cost in a timely manner, 
or the SSO retail riders are by-passable or additional 
customer switching occurs, our results of operations, 
financial condition and cash flows could have a material 
adverse impact.

As members of PJM, DP&L and DPLE are also 

subject to certain additional risks including those 
associated with the allocation among PJM members 
of losses caused by unreimbursed defaults of other 
participants in PJM markets and those associated 
with complaint cases filed against PJM that may 
seek refunds of revenues previously earned by PJM 
members including DP&L and DPLE. These amounts 
could be significant and have a material adverse effect 
on our results of operations, financial condition and 
cash flows.

Costs associated with new transmission projects 
could have a material adverse effect on our results of 
operations, financial condition and cash flows.

Annually, PJM performs a review of the capital 
additions required to provide reliable electric 
transmission services throughout its territory. PJM 
traditionally allocated the costs of constructing these 
facilities to those entities that benefited directly 
from the additions. FERC orders issued in 2007 and 
thereafter modified the traditional method of allocating 
costs associated with new high voltage planned 
transmission facilities. FERC ordered that the cost 
of new high-voltage facilities be socialized across 
the PJM region. Various parties, including DP&L, 
challenged this allocation method and in 2009, the 
U.S. Court of Appeals, Seventh Circuit ruled that the 
FERC had failed to provide a reasoned basis for the 
allocation method and remanded the case to the FERC 
for further proceedings. Until such time as FERC may 
act to approve a change in methodology, PJM will 
continue to apply the allocation methodology that had 
been approved by FERC in 2007. The overall impact of 
FERC’s allocation methodology cannot be definitively 
assessed because not all new planned construction 
is likely to happen. The additional costs charged to 
DP&L for new large transmission approved projects 
were immaterial in 2010 and are not expected to be 
material in 2011. Over time, as more new transmission 
projects are constructed and if the allocation method is 
not changed, the annual costs could become material. 
Although we continue to maintain that the costs of these 
projects should be borne by the direct beneficiaries 
of the projects and that DP&L is not one of these 
beneficiaries, DP&L can, and currently is recovering 
these allocated costs from its SSO retail customers 
through the TCRR rider.

Our inability to obtain financing on reasonable terms, 
or at all, with creditworthy counterparties could 
adversely affect our results of operations, financial 
condition and cash flows.

From time to time we rely on access to the credit and 
capital markets to fund certain of our operational and 
capital costs. These capital and credit markets have 
experienced extreme volatility and disruption and 
the ability of corporations to obtain funds through 
the issuance of debt or equity has been negatively 
impacted. Disruptions in the credit and capital markets 
make it harder and more expensive to obtain funding 
for our business. Access to funds under our existing 
financing arrangements is also dependent on the 
ability of our counterparties to meet their financing 
commitments. Our inability to obtain financing 

DPL Inc.  29

 
on reasonable terms, or at all, with creditworthy 
counterparties could adversely affect our results of 
operations, financial condition and cash flows. If our 
available funding is limited or we are forced to fund 
our operations at a higher cost, these conditions 
may require us to curtail our business activities and 
increase our cost of funding, both of which could 
reduce our profitability. DP&L has variable rate debt 
that bears interest based on a prevailing rate that is 
reset weekly based on a market index that can be 
affected by market demand, supply, market interest 
rates and other market conditions. We also currently 
maintain both cash on deposit and investments in cash 
equivalents that could be adversely affected by interest 
rate fluctuations. In addition, select debt of DPL and 
DP&L is currently rated investment grade by various 
rating agencies. If the rating agencies were to rate DPL 
and DP&L below investment grade, we would likely 
be required to pay a higher interest rate under certain 
existing and future financings and our potential pool of 
investors and funding sources would likely decrease. 
Our credit ratings also govern the collateral provisions 
of certain of our contracts, and a below investment 
grade credit rating by one of the rating agencies could 
require us to post cash collateral under these contracts. 
These events would likely reduce our liquidity and 
profitability and could have a material adverse effect 
on our results of operations, financial condition and 
cash flows.

Poor investment performance of our benefit plan 
assets and other factors impacting benefit plan costs 
could unfavorably impact our liquidity and results 
of operations.

The performance of the capital markets affects the 
values of the assets that are held in trust to satisfy 
future obligations under our pension and postretirement 
benefit plans. These assets are subject to market 
fluctuations and will yield uncertain returns, which may 
fall below our projected return rates. A decline in the 
market value of the pension and postretirement benefit 
plan assets will increase the funding requirements 
under our pension and postretirement benefit plans 
if the actual asset returns do not recover these 
declines in value in the foreseeable future. Future 
pension funding requirements, and the timing of 
funding payments, may also be subject to changes 
in legislation. The Pension Protection Act, enacted in 
August 2006, requires underfunded pension plans to 
improve their funding ratios within prescribed intervals 
based on the level of their underfunding. As a result, 
our required contributions to these plans at times have 
increased and may increase in the future. In addition, 

our pension and postretirement benefit plan liabilities 
are sensitive to changes in interest rates. As interest 
rates decrease, the discounted liabilities increase, 
potentially increasing benefit expense and funding 
requirements. Further, changes in demographics, 
including increased numbers of retirements or changes 
in life expectancy assumptions, may also increase 
the funding requirements for the obligations related 
to the pension and other postretirement benefit plans. 
Declines in market values and increased funding 
requirements could have a material adverse effect 
on our results of operations, financial condition and 
cash flows.

Our businesses depend on counterparties performing 
in accordance with their agreements. If they fail to 
perform, we could incur substantial expense, which 
could adversely affect our liquidity, cash flows and 
results of operations.

We enter into transactions with and rely on many 
counterparties in connection with our business, 
including for the purchase and delivery of inventory, 
including fuel and equipment components (such 
as limestone for our FGD equipment), for our 
capital improvements and additions and to provide 
professional services, such as actuarial calculations, 
payroll processing and various consulting services. 
If any of these counterparties fails to perform its 
obligations to us or becomes unavailable, our business 
plans may be materially disrupted, we may be forced 
to discontinue certain operations if a cost-effective 
alternative is not readily available or we may be forced 
to enter into alternative arrangements at then-current 
market prices that may exceed our contractual prices 
and cause delays. These events could cause our 
results of operations, financial condition and cash flows 
to have a material adverse impact.

Our stock price may fluctuate on account of a number 
of factors, many of which are beyond our control.

The market price of DPL’s common stock has 
fluctuated over a relatively wide range. Over the past 
three years, the market price of our common stock has 
fluctuated with a low of $19.16 and a high of $30.18. 
Our common stock in recent years has experienced 
significant price and volume variations that have often 
been unrelated to our operating performance. Over the 
previous year, the global markets have increasingly 
been characterized by substantially increased volatility 
in companies in a number of industries and in the 
broader markets. The market price of our common 
stock may continue to significantly fluctuate in the 
future and may be affected adversely by factors such 
as actual or anticipated change in our operating results, 

30  DPL Inc.

 
acquisition activity, changes in financial estimates by 
securities analysts, general market conditions, rumors 
and other factors, which factors may increase price 
volatility and be exacerbated by continued disruption in 
the global markets at large.

Our consolidated results of operations may be 
negatively affected by overall market, economic and 
other conditions that are beyond our control.

Economic pressures, as well as changing market 
conditions and other factors related to physical energy 
and financial trading activities, which include price, 
credit, liquidity, volatility, capacity, transmission and 
interest rates, can have a significant effect on our 
operations and the operations of our retail, industrial 
and commercial customers and our suppliers. The 
direction and relative strength of the economy has 
been increasingly uncertain due to softness in the real 
estate and mortgage markets, volatility in fuel and other 
energy costs, difficulties in the financial services sector 
and credit markets, high unemployment and other 
factors. Many of these factors have disproportionately 
impacted our Ohio service territory.

Our results of operations, financial condition and 
cash flows may be negatively affected by sustained 
downturns or a sluggish economy. Sustained downturns, 
recessions or a sluggish economy generally affect the 
markets in which we operate and negatively influence 
our energy operations. A contracting, slow or sluggish 
economy could reduce the demand for energy in areas 
in which we are doing business. During economic 
downturns, our commercial and industrial customers 
may see a decrease in demand for their products, which 
in turn may lead to a decrease in the amount of energy 
they require. In addition, our customers’ ability to pay us 
could also be impaired, which could result in an increase 
in receivables and write-offs of uncollectible accounts. 
Our suppliers could also be affected by the economic 
downturn resulting in supply delays or unavailability. 
Reduced demand for our electric services, failure by our 
customers to timely remit full payment owed to us and 
supply delays or unavailability could have a material 
adverse effect on our results of operations, financial 
condition and cash flows.

The exercise of warrants would increase the number 
of common shares outstanding and increase our 
common share dividend costs, thus affecting any 
existing guidance on earnings per share and adversely 
affecting our financial condition and cash flows.

DPL’s warrant holders can exercise their warrants 
to purchase shares of DPL common stock at their 
discretion until March 12, 2012. As of the date of 
this report, the number of outstanding warrants is 

1.7 million. As a result, DPL could be required to issue 
up to 1.7 million common shares in exchange for the 
receipt of the exercise price of $21.00 per share or 
pursuant to a cashless exercise process. The exercise 
of warrants would increase the number of common 
shares outstanding and increase our common share 
dividend payments.

Accidental improprieties and undetected errors 
in our internal controls and information reporting 
could result in the disallowance of cost recovery, 
noncompliant disclosure and reporting or incorrect 
payment processing.

Our internal controls, accounting policies and practices 
and internal information systems are designed to enable 
us to capture and process transactions and information 
in a timely and accurate manner in compliance with 
GAAP in the United States of America, laws and 
regulations, taxation requirements and federal securities 
laws and regulations in order to, among other things, 
disclose and report financial and other information in 
connection with the recovery of our costs and with our 
reporting requirements under federal securities, tax 
and other laws and regulations and to properly process 
payments. We have implemented corporate governance, 
internal control and accounting policies and procedures 
in connection with the Sarbanes-Oxley Act of 2002 (the 
“Act”). Our internal controls and policies have been and 
continue to be closely monitored by management and 
our Board of Directors to ensure continued compliance 
with Section 404 of the Act. While we believe these 
controls, policies, practices and systems are adequate 
to verify data integrity, unanticipated and unauthorized 
actions of employees, temporary lapses in internal 
controls due to shortfalls in oversight or resource 
constraints could lead to improprieties and undetected 
errors that could result in the disallowance of cost 
recovery, noncompliant disclosure and reporting or 
incorrect payment processing. The consequences of 
these events could have a material adverse effect on our 
results of operations, financial condition and cash flows.

New accounting standards or changes to existing 
accounting standards could materially impact how we 
report our results of operations, financial condition 
and cash flows.

Our Consolidated Financial Statements are prepared 
in accordance with accounting principles generally 
accepted in the United States of America. The SEC, 
FASB or other authoritative bodies or governmental 
entities may issue new pronouncements or new 
interpretations of existing accounting standards that 
may require us to change our accounting policies. 
These changes are beyond our control, can be difficult 

DPL Inc.  31

 
to predict and could materially impact how we report 
our results of operations, financial condition and cash 
flows. We could be required to apply a new or revised 
standard retroactively, which could adversely affect 
our financial condition. In addition, in preparing our 
Consolidated Financial Statements, management is 
required to make estimates and assumptions. Actual 
results could differ significantly from those estimates.
The SEC has issued a roadmap for the transition 
by U.S. public companies to the use of International 
Financial Reporting Standards (IFRS) promulgated 
by the International Accounting Standards Board that 
could result in significant changes to our accounting 
and reporting, such as in the treatment of regulatory 
assets and liabilities and property. Under the SEC’s 
proposed roadmap, we could be required to prepare 
financial statements in accordance with IFRS in 2015. 
The SEC expects to make a determination in 2011 
regarding the mandatory adoption of IFRS. We are 
currently assessing the impact that this potential 
change would have on our Consolidated Financial 
Statements and we will continue to monitor the 
development of the potential implementation of IFRS.

If we are unable to maintain a qualified and properly 
motivated workforce, our results of operations, 
financial condition and cash flows could have a 
material adverse effect.

One of the challenges we face is to retain a skilled, 
efficient and cost-effective workforce while recruiting 
new talent to replace losses in knowledge and skills 
due to retirements. This undertaking could require us 
to make additional financial commitments and incur 
increased costs. If we are unable to successfully attract 
and retain an appropriately qualified workforce, our 
results of operations, financial condition and cash flows 
could have a material adverse impact. In addition, we 
have employee compensation plans that reward the 
performance of our employees. While we seek to ensure 
that our compensation plans encourage acceptable 
levels for risk and high performance through pay mix, 
performance metrics and timing, and although we have 
policies and procedures in place to mitigate excessive 
risk-taking by employees; excessive risk-taking by our 
employees to achieve performance targets could result 
in events that could have a material adverse effect on our 
results of operations, financial condition and cash flows.

We are subject to collective bargaining agreements 
and other employee workforce factors that could 
affect our businesses.

Over half of our employees are represented by a 
collective bargaining agreement that is in effect until 
October 31, 2011. While we believe that we maintain 

a satisfactory relationship with our employees, it is 
possible that labor disruptions affecting some or 
all of our operations could occur during the period 
of the bargaining agreement or at the expiration of 
the collective bargaining agreement before a new 
agreement is negotiated. Work stoppages by, or poor 
relations or ineffective negotiations with, our employees 
could have a material adverse effect on our results of 
operations, financial condition and cash flows.

Potential security breaches and terrorism could 
adversely affect our business.

Man-made problems, such as human error, computer 
viruses, terrorism, theft and sabotage, may disrupt our 
operations and harm our operating results. We operate 
in a highly regulated industry that requires the continued 
operation of sophisticated information technology 
systems and network infrastructure. In the course of 
our business, we also store and use certain of our 
customers’, employees’ and others’ personal information 
and other confidential and sensitive information. Despite 
our implementation of security measures, all of our 
technology systems are vulnerable to disability, failures 
or unauthorized access due to hacking, viruses, acts 
of war or terrorism and other causes. If our technology 
systems were to fail or be breached and we were 
unable to recover them in a timely way, we could be 
unable to fulfill critical business functions and sensitive 
and confidential information and other data could be 
compromised, which could result in negative publicity, 
remediation costs and potential litigation, damages, 
consent orders, injunctions, fines and other relief. 
These events could have a material adverse effect on 
our results of operations, financial condition and cash 
flows. Our third party service providers that provide 
critical business functions or have access to sensitive 
and confidential information and other data may also be 
vulnerable to security breaches and other man-made 
problems that could have an adverse effect on us. In 
addition, our generation plants, fuel storage facilities, 
transmission and distribution facilities may be targets of 
terrorist activities that could disrupt our business. Any 
such disruption could result in a material decrease in 
revenues and significant additional costs to repair and 
insure our assets, which could have a material adverse 
effect on our results of operations, financial condition 
and cash flows. The continued threat of terrorism and 
heightened security and military action in response to 
this threat, or any future acts of terrorism, may cause 
further disruptions to the economies of the United States 
and other countries and create further uncertainties 
or otherwise materially harm our results of operations, 
financial condition and cash flows.

32  DPL Inc.

 
DPL is a holding company and parent of DP&L and 
other subsidiaries. DPL’s cash flow is dependent 
on the operating cash flows of DP&L and its other 
subsidiaries and their ability to pay cash to DPL.

DPL is a holding company and its investments in 
its subsidiaries are its primary assets. A significant 
portion of DPL’s business is conducted by its DP&L 
subsidiary. As such, DPL’s cash flow is dependent on 
the operating cash flows of DP&L and its ability to pay 
cash to DPL. DP&L’s governing documents contain 
certain limitations on the ability to declare and pay 
dividends to DPL while preferred stock is outstanding. 
Certain of DP&L’s debt agreements also contain limits 
with respect to the ability of DP&L to loan or advance 
funds to DPL. In addition, DP&L is regulated by the 
PUCO that possesses broad oversight powers to 
ensure that the needs of utility customers are being 
met. While we are not currently aware of any plans to 
do so, the PUCO could attempt to impose restrictions 
on the ability of DP&L to pay cash to DPL pursuant 
to these broad powers. While we do not expect any 
foregoing restrictions to significantly affect DP&L’s 
ability to pay funds to DPL in the future, a significant 
limitation on DP&L’s ability to pay dividends or loan or 
advance funds to DPL would have a material adverse 
impact on DPL’s results of operations, financial 
condition and cash flows.

Item 1B Unresolved Staff Comments

None

Item 2 Properties

Information relating to our properties is contained 
in Item 1 – Electric Operations and Fuel Supply and 
Note 4 of Notes to Consolidated Financial Statements.
Substantially all property and plants of DP&L are 
subject to the lien of the mortgage securing DP&L’s 
First and Refunding Mortgage, dated as of October 1, 
1935 with the Bank of New York, as Trustee (Mortgage).

Item 3 Legal Proceedings

In the normal course of business, we are subject to 
various lawsuits, actions, proceedings, claims and 
other matters asserted under laws and regulations. We 

are also from time to time involved in other reviews, 
investigations and proceedings by governmental and 
regulatory agencies regarding our business, certain of 
which may result in adverse judgments, settlements, 
fines, penalties, injunctions or other relief. We believe 
the amounts provided in our Consolidated Financial 
Statements, as prescribed by GAAP, for these matters 
are adequate in light of the probable and estimable 
contingencies. However, there can be no assurances 
that the actual amounts required to satisfy alleged 
liabilities from various legal proceedings, claims and 
other matters (including those matters noted below) 
and to comply with applicable laws and regulations will 
not exceed the amounts reflected in our Consolidated 
Financial Statements. As such, costs, if any, that may 
be incurred in excess of those amounts provided as of 
December 31, 2010, cannot be reasonably determined.
As we have previously disclosed, on or about 

June 24, 2004, the SEC commenced a formal 
investigation into the issues raised by a memorandum 
that had been sent on March 10, 2004, by DPL’s 
and DP&L’s Corporate Controller at the time to 
the Chairman of the Audit Committee of our Board 
of Directors expressing the Corporate Controller’s 
“concerns, perspectives and viewpoints” regarding 
financial reporting and governance issues within DPL 
and DP&L. On May 7, 2010, DPL received confirmation 
from the SEC’s Division of Enforcement that it had 
completed its investigation as to DPL and did not 
intend to recommend any action at this time.

The following additional information is incorporated 

by reference into this Item: (i) information about the 
legal and other proceedings contained in Item 1 – 
Competition and Regulation of Part 1 of this Annual 
Report on Form 10-K under the subheading “Ohio 
Retail Rates” and (ii) information about the legal 
proceedings contained in Item 8 – Note 16 of Notes 
to Consolidated Financial Statements of Part II of this 
Annual Report on Form 10-K under the subheadings 
“Litigation Involving Co-Owned Plants”, “Notices of 
Violation Involving Co-Owned Plants” and “Notices 
of Violation Involving Wholly-Owned Plants” of the 
section entitled Litigation, Notices of Violation and 
Other Matters Related to Air Quality and under the 
subheading “Regulation of Waste Disposal” under the 
sections entitled Regulation Matters Related to “Land 
Use and Solid Waste Disposal.”

Item 4 Removed and Reserved

DPL Inc.  33

 
Part II

Item 5 Market for Registrant’s Common Equity, Related Stockholder Matters and  
Issuer Purchases of Equity Securities

As of February 15, 2011, there were 19,792 holders of record of DPL common equity, excluding individual 
participants in security position listings. The following table presents the high and low per share sales prices for  
DPL common stock as reported by the New York Stock Exchange for each quarter of 2010 and 2009:

First Quarter 
Second Quarter 
Third Quarter 
Fourth Quarter 

2010

2009

High

Low

High

Low

$ 28.47 
$ 28.18 
$ 26.65 
$ 27.51 

$ 26.51 
$ 23.80 
$ 23.95 
$ 25.33 

$ 23.28 
$ 23.46 
$ 26.53 
$ 28.68 

$ 19.27 
$ 21.18 
$ 22.79 
$ 25.16 

DP&L’s common stock is held solely by DPL and, as a result, is not listed for trading on any stock exchange.

As long as DP&L preferred stock is outstanding, DP&L’s Amended Articles of Incorporation contain provisions 
restricting the payment of cash dividends on any of its common stock if, after giving effect to such dividend, the 
aggregate of all such dividends distributed subsequent to December 31, 1946 exceeds the net income of DP&L 
available for dividends on its Common Stock subsequent to December 31, 1946, plus $1.2 million. This dividend 
restriction has historically not impacted DP&L’s ability to pay cash dividends and, as of December 31, 2010, 
DP&L’s retained earnings of $616.9 million were all available for DP&L common stock dividends payable to DPL.

DPL paid regular quarterly cash dividends of $0.3025 and $0.2850 per share on our common stock during 2010 

and 2009, respectively. The annualized dividend rate was $1.21 per share in 2010 and $1.14 per share in 2009.

On December 8, 2010, DPL’s Board of Directors authorized a quarterly dividend rate increase of approximately 

10%, increasing the quarterly dividend per DPL common share from $0.3025 to $0.3325, effective with the next 
dividend declaration. If this dividend rate were maintained, the annualized dividend would increase from $1.21 per 
share to $1.33 per share. Additional information concerning dividends paid on DPL common stock is set forth under 
Selected Quarterly Information in Item 8 – Financial Statements and Supplementary Data.

Information regarding DPL’s equity compensation plans as of December 31, 2010 is disclosed in 

Item 12 – Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters, 
which incorporates such information by reference from DPL’s proxy statement for the 2011 Annual Meeting 
of Shareholders.

The following table details the repurchase by DPL of its common shares during the fourth quarter of 2010:

Month (1)

October
November 
December 

(1) Based on a calendar month.

Number of  
shares  
purchased (2) 

Average  
price paid  
per share (3) 

– 
1,094,995 
945,335 

2,040,330

$
– 
$ 25.94 
$ 25.60

Number of  
shares purchased  
as part of the  
Stock Repurchase  
Program (4) 

– 
1,094,995 
941,841 

2,036,836 

Approximate dollar 
value of shares 
that could still be 
purchased under  
the program (4) 

$ 200,000,000 
$ 171,595,830
$ 147,484,700

(2) Comprises shares purchased as part of DPL’s 2010 repurchase program and shares surrendered to DPL by employees to satisfy individual tax 
withholding obligations upon vesting of equity awards that are settled in DPL common stock. Shares totaling 3,494 were surrendered during the fourth 
quarter of 2010 to satisfy these individual tax withholding obligations.

(3) Average price paid per share reflects the individual trade price of repurchases under DPL’s current repurchase program as well as the closing price 
of DPL common stock on the vesting dates of the equity awards.

(4) On October 27, 2010, the DPL Board of Directors approved a Stock Repurchase Program under which DPL may repurchase up to $200 million of 
its common stock from time to time in the open market, through private transactions or otherwise. During the fourth quarter of 2010, DPL repurchased 
approximately 2.04 million shares of its common stock at an average price per share of $25.75. This Stock Repurchase Program will run through 
December 31, 2013 but may be modified or terminated at any time without notice.

34  DPL Inc.

The graph below matches DPL’s cumulative 5-year total shareholder return on common stock with the cumulative 
total returns of the Dow Jones US Industrial Average index, the S&P Utilities index and the S&P Electric Utilities 
index. The graph tracks the performance of a $1,000 investment in our common stock and in each index (with the 
reinvestment of all dividends) from December 31, 2005 to December 31, 2010.

Comparison of 5 Year Cumulative Total Return*

Among DPL Inc., The Dow Jones US Industrial Average Index,  
The S&P Electric Utilities Index and The S&P Utilities Index

$1,600

$1,400

$1,200

$1,000

$800

$600

$400

$200

$0

12/05

12/06

12/07

12/08

12/09

12/10

  *  $1000 invested on 12/31/05 in stock or index, including reinvestment of dividends.  

Fiscal year ending December 31. 

 Copyright ©2011 S&P, a division of The McGraw-Hill Companies Inc. All rights reserved.  
Copyright ©2011 Dow Jones & Co. All rights reserved.

12/05

12/06

12/07 

12/08 

12/09 

12/10 

DPL Inc. 
Dow Jones US Industrial Average
S&P Electric Utilities 
S&P Utilities 

$ 1,000.00  $ 1,108.68  $ 1,226.29  $ 987.60  $ 1,252.18  $ 1,220.96 
$ 1,000.00  $ 1,190.47  $ 1,296.24  $ 882.34  $ 1,082.48  $ 1,234.72 
$ 1,000.00  $ 1,232.11  $ 1,516.95  $ 1,125.05  $ 1,163.05  $ 1,202.99
$ 1,000.00  $ 1,209.90  $ 1,444.37  $ 1,025.78  $ 1,147.94  $ 1,210.62 

 The stock price performance included in this graph is not necessarily indicative of  
future stock price performance.

DPL Inc.  35

 
 
 
 
 
 
 
 
Item 6 Selected Financial Data

($ in millions except per share amounts or as indicated)

2010

2009

2008

2007

2006

For the years ended December 31,

DPL
Basic earnings per share of common stock:

Continuing operations (a) 
Discontinued operations (b) (c) 
Total basic earnings per common share

Diluted earnings per share of common stock:

Continuing operations (a) 
Discontinued operations (b) (c) 
Total dilutive earnings per common share

Dividends declared per share
Dividend payout ratio

Total electric sales (millions of kWh)

Results of operations:

$
$
$

$
$
$

$

2.51
–
2.51

2.50
–
2.50

1.21
48.2%

17,237

$
$
$

$
$
$

$

2.03
–
2.03

2.01
–
2.01

1.14
56.2%

16,667

$
$
$

$
$
$

$

2.22
–
2.22

2.12
–
2.12

1.10
49.5%

17,172

$
$
$

$
$
$

$

1.97
0.09
2.06

1.80
0.08
1.88

1.04
50.5%

18,598

$
$
$

$
$
$

$

1.12
0.12
1.24

1.03
0.12
1.15

1.00
80.7%

18,418

Revenues
Earnings from continuing operations, net of tax (a) 
Earnings from discontinued operations, net of tax
Cumulative effect of accounting change, net of tax
Net income

$ 1,883.1
290.3
$
–
$
$
–
290.3
$

$ 1,588.9
229.1
$
–
$
$
–
229.1
$

$ 1,601.6
244.5
$
–
$
$
–
244.5
$

$ 1,515.7
211.8
$
10.0
$
$
–
221.8
$

$ 1,393.5
125.6
$
14.0
$
–
$
139.6
$

Financial position items at December 31:

Total assets
Long-term debt (d)
Total construction additions
Redeemable preferred stock of subsidiary

Senior unsecured debt ratings at December 31: 

Fitch Ratings
Moody’s Investors Service
Standard & Poor’s Corporation

Number of shareholders - common stock

DP&L
Total electric sales (millions of kWh)

Results of operations:

Revenues
Earnings on common stock (a)

Financial position items at December 31:

Total assets
Long-term debt (d)
Redeemable preferred stock 

Senior secured debt ratings at December 31:  

Fitch Ratings
Moody’s Investors Service
Standard & Poor’s Corporation

Number of shareholders - preferred stock

$ 3,813.3
$ 1,026.6
151.4
$
22.9
$

$ 3,641.7
$ 1,223.5
145.3
$
22.9
$

$ 3,637.0
$ 1,376.1
227.8
$
22.9
$

$ 3,566.6
$ 1,541.5
346.7
$
22.9
$

$ 3,612.2
$ 1,551.8
351.6
$
22.9
$

A-
Baa1
BBB+

19,877

A-
Baa1
BBB+

BBB+
Baa2
BBB-

BBB+
Baa2
BBB-

BBB
Baa3
BB

20,888

21,628

22,771

24,434

17,083

16,590

17,105

18,598

18,418

$ 1,790.5
276.8
$

$ 1,550.4
258.0
$

$ 1,572.9
284.9
$

$ 1,507.4
270.7
$

$ 1,385.2
241.6
$

$ 3,475.4
884.0
$
22.9
$

$ 3,457.4
783.7
$
22.9
$

$ 3,397.7
884.0
$
22.9
$

$ 3,276.7
874.6
$
22.9
$

$ 3,090.3
785.2
$
22.9
$

AA-
Aa3
A

234

AA-
Aa3
A

242

A+
A2
A-

256

A+
A2
BBB+

281

A
A3
BBB

290

(a) In the fourth quarter of 2006, DPL entered into agreements to sell two of its peaking facilities resulting in a $44.2 million ($71 million pre-tax) 
impairment charge. The sale was finalized in April 2007. During 2006, DPL recorded a $37.3 million ($61.2 million pre-tax) charge for early redemption 
of debt. DP&L recorded a $2.5 million ($4.1 million pre-tax) charge for early redemption of debt in 2006. In May 2007, DPL settled the litigation with 
former executives resulting in a $19.7 million ($31 million pre-tax) gain. In April 2007, DPL also recouped legal costs associated with the litigation 
with the former executives from one of its insurers resulting in a $9.2 million ($14.5 million pre-tax) gain. In 2008, DPL sold coal and excess emission 
allowances to various counterparties, realizing net gains of $58.2 million ($83.4 million pre-tax) and $24.3 million ($34.8 million pre-tax), respectively. 
Also, in June 2008, DPL entered into a $42 million tax settlement with ODT resulting in a recorded income tax benefit of $8.5 million.

(b) On February 13, 2005, DPL’s subsidiaries, MVE, Inc. (MVE) and MVIC, entered into an agreement to sell their respective interest in forty-six private 
equity funds. MVE and MVIC completed the sale of forty-three funds and a portion of another during 2005. The ownership interests to the remaining two 
funds and a portion of the third fund were transferred in 2006 and 2007, at which time DPL recognized previously deferred gains. $7.9 million ($4.9 million 
after tax) and $18.9 million ($12.1 million after tax) of these previously deferred gains were recognized in 2007 and 2006, respectively.

(c) On May 21, 2007 DPL settled litigation with three former executives, the three former executives relinquished all of their rights to certain deferred 
compensation, restricted stock units, MVE incentives, stock options and reimbursement of legal fees. The reversal of accruals related to the 
performance of the financial asset portfolio was recorded in discontinued operations. A portion of the $25 million settlement expense was allocated to 
discontinued operations. These transactions resulted in a net gain of $8.1 million, net of associated expenses ($5.1 million after tax), on the settlement 
of litigation being recorded in discontinued operations in 2007.

(d) Excludes current maturities of long-term debt.

36  DPL Inc.

 
Item 7 Management’s Discussion and 
Analysis of Financial Condition and  
Results of Operations

This report includes the combined filing of DPL 
and DP&L. DP&L is the principal subsidiary of 
DPL providing approximately 93% of DPL’s total 
consolidated gross margin and approximately 91% 
of DPL’s total consolidated asset base. Throughout 
this report, the terms “we,” “us,” “our” and “ours” are 
used to refer to both DPL and DP&L, respectively and 
altogether, unless the context indicates otherwise. 
Discussions or areas of this report that apply only to 
DPL or DP&L will clearly be noted in the section.

Certain statements contained in this discussion 
are “forward-looking statements” within the meaning 
of the Private Securities Litigation Reform Act of 
1995. Matters discussed in this report that relate to 
events or developments that are expected to occur 
in the future, including management’s expectations, 
strategic objectives, business prospects, anticipated 
economic performance and financial condition and 
other similar matters constitute forward-looking 
statements. Forward-looking statements are based on 
management’s beliefs, assumptions and expectations 
of future economic performance, taking into account 
the information currently available to management. 
These statements are not statements of historical 
fact and are typically identified by terms and phrases 
such as “anticipate,” “believe,” “intend,” “estimate,” 
“expect,” “continue,” “should,” “could,” “may,” “plan,” 
“project,” “predict,” “will” and similar expressions. 
Such forward-looking statements are subject to risks 
and uncertainties, and investors are cautioned that 
outcomes and results may vary materially from those 
projected due to various factors beyond our control, 
including but not limited to: abnormal or severe weather 
and catastrophic weather-related damage; unusual 
maintenance or repair requirements; changes in fuel 
costs and purchased power, coal, environmental 
emissions, natural gas and other commodity prices; 
volatility and changes in markets for electricity and 
other energy-related commodities; performance of our 
suppliers; increased competition and deregulation in 
the electric utility industry; increased competition in 
the retail generation market; changes in interest rates; 
state, federal and foreign legislative and regulatory 
initiatives that affect cost and investment recovery, 
emission levels, rate structures or tax laws; changes 
in federal or state environmental laws and regulations 
to which DPL and its subsidiaries are subject; the 

development and operation of RTOs, including PJM to 
which DPL’s operating subsidiary (DP&L) has given 
control of its transmission functions; changes in our 
purchasing processes, pricing, delays, contractor and 
supplier performance and availability; significant delays 
associated with large construction projects; growth 
in our service territory and changes in demand and 
demographic patterns; changes in accounting rules 
and the effect of accounting pronouncements issued 
periodically by accounting standard-setting bodies; 
financial market conditions; the outcomes of litigation 
and regulatory investigations, proceedings or inquiries; 
general economic conditions; and the risks and other 
factors discussed in this report and other DPL and 
DP&L filings with the SEC.

Forward-looking statements speak only as of the 

date of the document in which they are made. We 
disclaim any obligation or undertaking to provide any 
updates or revisions to any forward-looking statement 
to reflect any change in our expectations or any change 
in events, conditions or circumstances on which the 
forward-looking statement is based.

The following discussion should be read in 
conjunction with the accompanying Consolidated 
Financial Statements and related footnotes included in 
Item 8 – Financial Statements and Supplementary Data.

Business Overview
DPL is a regional electric energy and utility company. 
During 2010, DPL, for the first time, met the GAAP 
requirements for separate segment reporting. DPL’s 
two segments are the Utility segment, comprised of its 
DP&L subsidiary, and the Competitive Retail segment, 
comprised of its DPLER subsidiary. Refer to Note 17 of 
Notes to Consolidated Financial Statements for more 
information relating to these reportable segments. 
DP&L does not have any reportable segments.

DP&L is primarily engaged in the generation, 
transmission and distribution of electricity in West 
Central Ohio. DPL and DP&L strive to achieve 
disciplined growth in energy margins while limiting 
volatility in both cash flows and earnings and to achieve 
stable, long-term growth through efficient operations 
and strong customer and regulatory relations. More 
specifically, DPL’s and DP&L’s strategy is to match 
energy supply with load or customer demand, 
maximizing profits while effectively managing exposure 
to movements in energy and fuel prices and utilizing 
the transmission and distribution assets that transfer 
electricity at the most efficient cost while maintaining 
the highest level of customer service and reliability.

DPL Inc.  37

 
We operate and manage generation assets and are 

exposed to a number of risks. These risks include, but 
are not limited to, electricity wholesale price risk, PJM 
capacity price risk, regulatory risk, environmental risk, 
fuel supply and price risk, customer switching risk and 
the risk associated with power plant performance. We 
attempt to manage these risks through various means. 
For instance, we operate a portfolio of wholly-owned 
and jointly-owned generation assets that is diversified 
as to coal source, cost structure and operating 
characteristics. We are focused on the operating 
efficiency of these power plants and maintaining 
their availability.

We operate and manage transmission and 
distribution assets in a rate-regulated environment. 
Accordingly, this subjects us to regulatory risk in terms 
of the costs that we may recover and the investment 
returns that we may collect in customer rates. We are 
focused on delivering electricity and maintaining high 
standards of customer service and reliability in a cost-
effective manner.

Additional information relating to our risks is 

contained in Item 1A – Risk Factors.

We have identified certain issues that we believe 

may have a significant impact on our results of 
operations and financial condition in the future. The 
following issues mentioned below are not meant to be 
exhaustive but to provide insight on matters that are 
likely to have an effect on our results of operations and 
financial condition in the future:

Regulatory Environment

■ Carbon Emissions – Climate Change Legislation

There is an on-going concern nationally and 
internationally about global climate change and the 
contribution of emissions of GHGs, including most 
significantly, CO2. This concern has led to interest 
in legislation at the federal level, actions at the state 
level as well as litigation relating to GHG emissions. In 
2007, a U.S. Supreme Court decision upheld that the 
USEPA has the authority to regulate CO2 emissions 
from motor vehicles under the CAA. In April 2009, 
the USEPA issued a proposed endangerment finding 
under the CAA, which was finalized and published on 
December 15, 2009. The proposed finding determined 
that CO2 and other GHGs from motor vehicles threaten 
the health and welfare of future generations by 
contributing to climate change. In December 2009, 
USEPA finalized this endangerment finding with a 
regulatory effective date of January 2010. Numerous 
affected parties have asked the USEPA Administrator 
to reconsider this decision. This endangerment finding, 

if not changed, is expected to lead to the regulation of 
CO2 and other GHGs from electric generating units and 
other stationary sources of these emissions. Increased 
pressure for CO2 emissions reduction is also coming 
from investor organizations and the international 
community. Environmental advocacy groups are also 
focusing considerable attention on CO2 emissions from 
power generation facilities and their potential role in 
climate change. Legislation proposed in 2009 to target 
a reduction in the emission of GHGs from large sources 
was not enacted. Approximately 99% of the energy we 
produce is generated by coal. DP&L’s share of CO2 
emissions at generating stations we own and co-own is 
approximately 16 million tons annually. If legislation or 
regulations are passed at the federal or state levels that 
impose mandatory reductions of CO2 and other GHGs 
on generation facilities, the cost to DPL and DP&L of 
such reductions could be material.

■ SB 221 Requirements

SB 221 and the implementation rules contain targets 
relating to advanced energy portfolio standards, 
renewable energy, demand reduction and energy 
efficiency standards. The standards require that, by 
the year 2025, 25% of the total number of kWh of 
electricity sold by the utility to retail electric consumers 
must come from alternative energy resources, which 
include “advanced energy resources” such as 
distributed generation, clean coal, advanced nuclear, 
energy efficiency and fuel cell technology; and 
“renewable energy resources” such as solar, hydro, 
wind, geothermal and biomass. At least half of the 25% 
must be generated from renewable energy resources, 
including 0.5% from solar energy. The renewable 
energy portfolio, energy efficiency and demand 
reduction standards began in 2009 with increased 
percentage requirements each year thereafter. The 
annual targets for energy efficiency and peak demand 
reductions began in 2009 with annual increases. 
Energy efficiency programs are to save 22.3% by 2025 
and peak demand reductions are expected to reach 
7.75% by 2018 compared to a baseline energy usage. 
If any targets are not met, compliance penalties will 
apply, unless the PUCO makes certain findings that 
would excuse performance.

SB 221 also contains provisions for determining 
whether an electric utility has significantly excessive 
earnings. On September 9, 2009, the PUCO issued an 
order establishing a significantly excessive earnings 
test (SEET) proceeding. After receiving comments from 
interested parties including DP&L, the PUCO issued 
an order on June 30, 2010 to establish general rules 

38  DPL Inc.

 
for calculating the earnings and comparing them to a 
comparable group to determine whether there were 
significantly excessive earnings. Pursuant to the ESP 
Stipulation, DP&L becomes subject to the SEET in 
2013 based on 2012 earnings results and the SEET 
may have a material impact on operations. DP&L 
faces regulatory uncertainty from its next ESP or MRO 
filing which is scheduled to be filed in the first quarter 
of 2012 to be effective January 1, 2013. The filing 
may result in changes to the current rate structure 
and riders.

■ NOx and SO2 Emissions – CAIR

The USEPA issued CAIR on March 10, 2005 to regulate 
certain upwind states with respect to fine particulate 
matter and ozone. CAIR created interstate trading 
programs for annual NOx emission allowances and 
made modifications to an existing trading program 
for SO2 that were to take effect in 2010. On July 11, 
2008, the United States Court of Appeals for the 
District of Columbia Circuit issued a decision that 
vacated the USEPA CAIR and its associated Federal 
Implementation Plan. This decision remanded these 
issues back to the USEPA. The court’s decision, in part, 
invalidated the new NOx annual emission allowance 
trading program and the modifications to the SO2 
emission trading program, and created uncertainty 
regarding future NOx and SO2 emission reduction 
requirements and their timing. On December 23, 
2008, the court reversed part of its decision that 
vacated CAIR. Thus, CAIR currently remains in effect, 
but the USEPA remains subject to the court’s order 
to revise the program. On July 6, 2010, the USEPA 
proposed the Clean Air Transport Rule (CATR) which 
will effectively replace CAIR. We have reviewed this 
proposal and submitted comments to the USEPA on 
September 30, 2010. At this time, we are unable to 
determine the overall financial impact that these rules 
could have on our operations in the future.

■ Dodd-Frank Financial Reform Bill

In July 2010, the President signed The Dodd-
Frank Wall Street Reform and Consumer Protection 
Act (Dodd-Frank Act) into law. The Dodd-Frank 
Act contains significant requirements relating to 
derivatives, including, among others, a requirement 
that certain transactions be cleared on exchanges 
and a requirement to post cash collateral for these 
transactions. The Dodd-Frank Act provides a potential 

exception from these clearing and cash collateral 
requirements for commercial end-users. The Dodd-
Frank Act requires the CFTC to establish rules to 
implement the Act’s requirements and exceptions. 
Requirements to post collateral could reduce the cost 
effectiveness of us entering into derivative transactions 
to reduce commodity price and interest rate volatility or 
could increase the demands on our liquidity or require 
us to increase our levels of debt to enter into such 
derivative transactions. Even if we were to qualify for an 
exception from these requirements, our counterparties 
that do not qualify for the exception may pass along 
any increased costs incurred by them through higher 
prices and reductions in unsecured credit limits. The 
occurrence of any of these events could have an 
adverse effect on our results of operations, financial 
condition and cash flows.

Competition and PJM Pricing

■ RPM Capacity Auction Price

The PJM RPM capacity base residual auction for the 
2013/2014 period cleared at a per megawatt price of 
$28/day for our RTO area. The per megawatt prices for 
the periods 2012/2013, 2011/2012 and 2010/2011 were 
$16/day, $110/day and $174/day, respectively, based 
on previous auctions. Future RPM auction results will be 
dependent not only on the overall supply and demand 
of generation and load, but may also be impacted by 
congestion as well as PJM’s business rules relating to 
bidding for demand response and energy efficiency 
resources in the RPM capacity auctions. The SSO 
retail costs and revenues are included in the RPM rider 
therefore increases in customer switching causes more 
of the RPM capacity costs and revenues to be excluded 
from the RPM rider calculation. We cannot predict the 
outcome of future auctions or customer switching but 
based on actual results attained in 2010, we estimate 
that a hypothetical increase or decrease of $10 in 
the capacity auction price would result in an annual 
impact to net income of approximately $4.4 million and 
$3.1 million for DPL and DP&L, respectively. These 
estimates do not, however, take into consideration the 
other factors that may affect the impact of capacity 
revenues and costs on net income such as the levels 
of customer switching, our generation capacity, the 
levels of wholesale revenues and our retail customer 
load. These estimates are discussed further within 
Commodity Pricing Risk under the Market Risk section 
of this Management Discussion & Analysis.

DPL Inc.  39

 
■ Ohio Competitive Considerations and Proceedings

Since January 2001, DP&L’s electric customers have 
been permitted to choose their retail electric generation 
supplier. DP&L continues to have the exclusive right 
to provide delivery service in its state certified territory 
and the obligation to supply retail generation service to 
customers that do not choose an alternative supplier. 
The PUCO maintains jurisdiction over DP&L’s delivery 
of electricity, SSO and other retail electric services.

Overall power market prices, as well as government 

aggregation initiatives within DP&L’s service territory, 
have led or may lead to the entrance of additional 
competitors in our service territory. During the year 
ended December 31, 2010, there were four additional 
unaffiliated marketers that registered as CRES 
providers in DP&L’s service territory, bringing the 
total number of CRES providers in DP&L’s service 
territory to eleven. DPLER, an affiliated company and 
one of the eleven registered CRES providers, has been 
marketing transmission and generation services to 
DP&L customers. During 2010, DPLER accounted for 
approximately 4,417 million kWh of the total 4,562 million 
kWh supplied by CRES providers within DP&L’s service 
territory. During 2010, 847 customers with an annual 
energy usage of 145 million kWh were supplied by 
other CRES providers within DP&L’s service territory, 
compared to 44 customers that had an annual energy 
usage of 16 million kWh during 2009. The volume 
supplied by DPLER represents approximately 31% of 
DP&L’s total distribution sales volume during 2010. 
The reduction to gross margin in 2010 as a result of 
customers switching to DPLER and other CRES providers 
was approximately $17 million and $53 million, for DPL 
and DP&L, respectively. We currently cannot determine 
the extent to which customer switching to CRES providers 
will occur in the future and the impact this will have 
on our operations, but any additional switching could 
have a significant adverse effect on our future results of 
operations, financial condition and cash flows.

Fuel and Related Costs

■ Fuel and Commodity Prices

The coal market is a global market in which domestic 
prices are affected by international supply disruptions 
and demand balance. In addition, domestic issues like 
government-imposed direct costs and permitting issues 
are affecting mining costs and supply availability. Our 
approach is to hedge the fuel costs for our anticipated 
electric sales. For the year ending December 31, 2011, 
we have hedged substantially all our coal requirements 
to meet our committed sales. We may not be able 
to hedge the entire exposure of our operations from 
commodity price volatility. If our suppliers do not meet 

their contractual commitments or we are not hedged 
against price volatility and we are unable to recover 
costs through the fuel and purchased power recovery 
rider, our results of operations, financial condition or 
cash flows could be materially affected.

Effective January 2010, the SSO retail 

customers’ portion of fuel price changes, including 
coal requirements and purchased power costs, 
was reflected in the implementation of the fuel and 
purchased power recovery rider, subject to PUCO 
review. DP&L is currently undergoing an audit of its 
fuel and purchased power recovery rider and as a 
result there is some uncertainty as to the costs that 
will be approved for recovery. Independent third 
parties conduct the fuel audit in accordance with the 
PUCO standards. DP&L anticipates that some of this 
uncertainty will be resolved during the summer of 2011 
after completion of the fuel audit. Based on the results of 
the audit, DP&L may record a favorable or unfavorable 
adjustment to earnings. It is too early to determine if 
any such adjustment would be material to our results of 
operations, financial condition and cash flows.

■ Sales of Coal and Excess Emission Allowances

During the year ended December 31, 2010, DP&L 
sold coal and excess emission allowances to various 
counterparties realizing total net gains of $4.1 million 
and $0.8 million, respectively, compared to total net 
gains of $56.3 million and $5.0 million, respectively, 
realized over the same period in 2009. For 2010, these 
gains are recorded as a component of DP&L’s fuel 
costs and are reflected in operating income. Coal sales 
are impacted by a range of factors but can be largely 
attributed to the following: price volatility among the 
different coal basins or the quality of coal based on 
market conditions (coal optimization), variation in power 
demand, and the market price of power compared to 
the cost to produce power. Sales of excess emission 
allowances are impacted, among other factors, by: 
general economic conditions; fluctuations in market 
demand and pricing; availability of excess inventory 
available for sale; and changes to the regulatory 
environment in which we operate. The combined 
impact of these factors on our ability to sell coal and 
emission allowances in 2011 and beyond is not fully 
known at this time and could materially impact the 
amount of gains that will be recognized in the future. 
Effective January 2010, as part of the operation of the 
fuel and purchased power recovery rider, the SSO retail 
customers’ share of the emission gains and a portion of 
the SSO retail customers’ share of the coal gains were 
used to reduce the overall rate charged to customers.

40  DPL Inc.

 
Financial Overview
The following financial overview relates to DPL, 
which includes its principal subsidiary DP&L. The 
results of operations for both DPL and DP&L are 
separately discussed in more detail following this 
financial overview.

For the year ended December 31, 2010, Net 
income for DPL was $290.3 million, or $2.50 per share, 
compared to Net income of $229.1 million, or $2.01 per 
share, for the same period in 2009. All EPS amounts  
are on a diluted share basis. The increase in net 
income compared to the prior year was primarily due  
to the following:

Results of Operations – DPL Inc.
DPL’s results of operations include the results of 
its subsidiaries, including the consolidated results 
of its principal subsidiary DP&L. DP&L provides 
approximately 93% of DPL’s total consolidated gross 
margin. All material intercompany accounts and 
transactions have been eliminated in consolidation. A 
separate specific discussion of the results of operations 
for DP&L is presented elsewhere in this report.

Income Statement Highlights – DPL

$ in millions

For the years ended December 31,

2010

2009

2008

■ an increase in retail rates primarily as a result of an 
increase in the EIR, TCRR and RPM riders combined 
with the implementation of the fuel and energy 
efficiency riders,

■ an increase in sales volumes due to favorable 
weather and improved economic conditions,

■ a decrease in the volume of fuel consumed due to 
decreased generation by our power plants,

■ a net reduction in interest costs primarily as a result of 
certain redemptions of outstanding debt, and

■ an increase in wholesale market prices.

Partially offsetting these items were:

■ an increase in purchased power prices,

Revenues:
Retail
Wholesale
RTO revenues
RTO capacity revenues
Other revenues

Total revenues

Cost of revenues:
Fuel costs
Gains from sale of 

$ 1,456.5 $ 1,229.0 $ 1,223.3
149.9
110.4
106.9
11.1
$ 1,883.1 $ 1,588.9 $ 1,601.6

142.3
86.6
186.2
11.5

122.5
89.4
136.3
11.7

$

388.8 $

391.7 $

361.2

coal

(4.1)

(56.3)

(83.4)

Gains from sale of 

emission allowances

Net fuel

Purchased power
RTO charges
RTO capacity charges
Net purchased power

(0.8)
383.9

82.1
113.4
191.9
387.4

(5.0)
330.4

46.9
100.9
112.4
260.2

(34.8)
243.0

148.7
127.8
100.9
377.4

■ a decrease in retail revenue due to pricing associated 
with competitively supplied customers,

Total cost of revenues

$

771.3 $

590.6 $

620.4

Gross margins (a)

$ 1,111.8 $

998.3 $

981.2

■ an increase in RTO capacity and other charges, net 
of RTO revenues, which includes the net impact of the 
deferral and recovery of costs under the TCRR and 
RPM riders,

■ an overall decline in generating plant performance 
which resulted in a decrease in wholesale sales 
volume,

■ a decrease in gains recognized from the sales of coal 
and excess emission allowances, and

■ an increase in long-term disability and other operation 
and maintenance expenses.

Gross margin as a 

percentage of revenues

59.0%

62.8%

61.3%

Operating income

$

504.4 $

428.2 $

435.5

Earnings per share of 
common stock:
Basic EPS from 
operations

Diluted EPS from 
operations

$

2.51 $

2.03 $

2.22

2.50

2.01

2.12

(a) For purposes of discussing operating results, we present and discuss 
gross margins. This format is useful to investors because it allows 
analysis and comparability of operating trends and includes the same 
information that is used by management to make decisions regarding 
our financial performance.

DPL Inc. 

41

 
Revenues

Retail customers, especially residential and commercial 
customers, consume more electricity on warmer and 
colder days. Therefore, our retail sales volume is 
impacted by the number of heating and cooling degree 
days occurring during a year. Cooling degree days 
typically have a more significant impact than heating 
degree days since some residential customers do not 
use electricity to heat their homes.

Number of days

For the years ended December 31,

2010

2009

2008

Heating degree days (a)
Cooling degree days (a)

5,636
1,245

5,561
734

5,811
853

(a) Heating and cooling degree days are a measure of the relative heating 
or cooling required for a home or business. The heating degrees in a day 
are calculated as the difference of the average actual daily temperature 
below 65 degrees Fahrenheit. If the average temperature on March 
20th was 40 degrees Fahrenheit, the heating degrees for that day would 
be the 25 degree difference between 65 degrees and 40 degrees. In 
a similar manner, cooling degrees in a day are the difference of the 
average actual daily temperature in excess of 65 degrees Fahrenheit.

Since we plan to utilize our internal generating capacity 
to supply our retail customers’ needs first, increases 
in retail demand may decrease the volume of internal 
generation available to be sold in the wholesale market 
and vice versa. The wholesale market covers a multi-
state area and settles on an hourly basis throughout 
the year. Factors impacting our wholesale sales volume 
each hour of the year include: wholesale market prices; 
our retail demand; retail demand elsewhere throughout 
the entire wholesale market area; our plants’ and 
other utility plants’ availability to sell into the wholesale 
market and weather conditions across the multi-state 
region. Our plan is to make wholesale sales when 
market prices allow for the economic operation of our 
generation facilities not being utilized to meet our retail 
demand or when margin opportunities exist between 
the wholesale sales and power purchase prices.

The following table provides a summary of changes 

in revenues from prior periods:

$ in millions

2010 vs. 2009

2009 vs. 2008

Retail
Rate
Volume
Other 

Total retail change

Wholesale
Rate
Volume

Total wholesale change

RTO capacity and other
RTO capacity and  
other revenues
Total revenues change

$ 148.0
78.4
1.1
$ 227.5

$ 31.5
(11.7)
$ 19.8

$ 119.6
(113.5)
(0.4)
5.7

$

$ (87.0)
59.6
$ (27.4)

$ 46.9
$ 294.2

$
9.0
$ (12.7)

For the year ended December 31, 2010, Revenues 
increased $294.2 million, or 19%, to $1,883.1 million 
from $1,588.9 million in the same period of the prior 
year. This increase was primarily the result of higher 
average retail and wholesale rates, higher retail sales 
volume, and increased RTO capacity and other 
revenues, partially offset by lower wholesale sales 
volume. The revenue components for the year ended 
December 31, 2010 are further discussed below:

■ Retail revenues increased $227.5 million resulting 
primarily from an 11% increase in average retail rates 
due largely to the implementation of the fuel and 
energy efficiency riders, an increase in the TCRR and 
RPM riders, combined with the incremental effect of 
the recovery of costs under the EIR. This increase 
in the average retail rates was partially offset by the 
effect of lower rates due to customer switching which 
has resulted from increased levels of competition 
to provide transmission and generation services in 
our service territory. Retail sales volume had a 6% 
increase compared to those in the prior year period 
largely due to more favorable weather and improved 
economic conditions. The favorable weather conditions 
resulted in a 70% increase in the number of cooling 
degree days to 1,245 days from 734 days in 2009. 
The above resulted in a favorable $148.0 million retail 
price variance and a favorable $78.4 million retail sales 
volume variance.

■ Wholesale revenues increased $19.8 million 
primarily as a result of a 28% increase in wholesale 
average prices, partially offset by a 10% decrease in 
wholesale sales volume which was largely a result of 
lower generation by our power plants and increased 
retail sales volume. This resulted in a favorable 
$31.5 million wholesale price variance partially offset 
by an unfavorable wholesale sales volume variance of 
$11.7 million.

■ RTO capacity and other revenues, consisting 
primarily of compensation for use of DP&L’s 
transmission assets, regulation services, reactive 
supply and operating reserves, and capacity payments 
under the RPM construct, increased $46.9 million 
compared to the same period in 2009. This increase 
in RTO capacity and other revenues was primarily the 
result of a $49.9 million increase in revenues realized 
from the PJM capacity auction, partially offset by a 
$3.0 million decrease in transmission, congestion and 
other revenues.

For the year ended December 31, 2009, Revenues 
decreased $12.7 million, or 1%, to $1,588.9 million 
from $1,601.6 million in the prior year. This decrease 

42  DPL Inc.

 
was primarily the result of lower retail sales volume 
as well as decreased wholesale average prices, 
partially offset by higher average retail rates, increased 
wholesale sales volume and an increase in RTO 
capacity and other revenues. The revenue components 
for the year ended December 31, 2009 are further 
discussed below:

■ Retail revenues increased $5.7 million resulting 
primarily from an 11% increase in average retail rates 
due largely to the incremental effect of the recovery of 
costs under the EIR combined with the implementation 
of the TCRR, RPM, Energy Efficiency and Alternative 
Energy riders, partially offset by a 9% decrease in sales 
volume driven largely by the effects of the economic 
recession and milder weather conditions. The milder 
weather conditions saw heating and cooling degree 
days decrease by 4% and 14% to 5,561 days and 
734 days, respectively. As a result, retail revenues 
had a favorable $119.6 million price variance and an 
unfavorable $113.5 million sales volume variance.

■ Wholesale revenues decreased $27.4 million 
primarily as a result of a 42% decrease in wholesale 
average prices partially offset by a 40% increase in 
sales volume, resulting in an unfavorable $87.0 million 
wholesale price variance and a favorable $59.6 million 
sales volume variance.

■ RTO capacity and other revenues, consisting 
primarily of compensation for use of DP&L’s 
transmission assets, regulation services, reactive 
supply and operating reserves as well as capacity 
payments under the RPM construct, increased $9.0 
million compared to the same period in the prior year. 
This increase was primarily the result of additional 
revenue of $29.4 million that was realized from the PJM 
capacity auction, partially offset by a decrease in PJM 
transmission and congestion revenues of $21.0 million.

DPL – Cost of Revenues

For the year ended December 31, 2010:

■ Net fuel costs, which include coal, gas, oil and 
emission allowance costs, increased $53.5 million, or 
16%, compared to 2009, primarily due to the impact of 
lower gains realized from the sale of DP&L’s coal and 
excess emission allowances. During the year ended 
December 31, 2010, DP&L realized $4.1 million and 
$0.8 million in gains from the sale of coal and excess 
emission allowances, respectively, compared to $56.3 
million and $5.0 million, respectively, realized during the 
same period in 2009. The effect of these lower gains 
was partially offset by the impact of a 2% decrease in 
the volume of generation by our plants.

■ Net purchased power increased $127.2 million, 
or 49%, compared to the same period in 2009 due 
largely to an increase of $92.0 million in RTO capacity 
and other charges which were incurred as a member 
of PJM, including costs associated with DP&L’s load 
obligations for retail customers. This increase included 
the net impact of the deferral and recovery of DP&L’s 
transmission, capacity and other PJM-related charges. 
Also contributing to the increase in net purchased 
power was a $37.7 million increase related to higher 
average market prices for purchased power, partially 
offset by a $2.5 million decrease associated with lower 
purchased power volumes. We purchase power to 
satisfy retail sales volume when generating facilities are 
not available due to planned and unplanned outages 
or when market prices are below the marginal costs 
associated with our generating facilities.

For the year ended December 31, 2009:

■ Net fuel costs, which include coal, gas, oil and 
emission allowances costs, increased $87.4 million, or 
36%, compared to 2008, primarily due to the impact of 
lower gains realized from the sales of coal and excess 
emission allowances combined with a 7% increase 
in the usage of fuel due mainly to the improved 
performance of our generating facilities. In 2009, DP&L 
realized $56.3 million and $5.0 million in gains from 
the sales of coal and excess emission allowances, 
respectively, compared to $83.4 million and $34.8 
million, respectively, during 2008. Also contributing 
to the increase in fuel costs was a 2% increase in the 
average cost of fuel consumed per kilowatt-hour largely 
resulting from higher market prices of coal combined 
with outages at lower-cost units.

■ Net purchased power decreased $117.2 million 
compared to 2008. The net decrease in purchased 
power was due in part to lower volumes of purchased 
power and lower average market rates of $72.3 
million and $29.5 million, respectively. The improved 
performance of our generating facilities, as mentioned 
in the preceding paragraph, resulted in increased 
generation output and a reduced demand for higher-cost 
purchased power. Also contributing to the decrease in 
purchased power were lower costs relating to other RTO 
charges as well as the net deferral during 2009 of costs 
relating to DP&L’s transmission, capacity and other PJM-
related charges which were incurred as a member of 
PJM. These decreases were partially offset by increased 
RTO capacity charges. We purchase power to satisfy 
retail sales volume when generating facilities are not 
available due to planned and unanticipated outages, 
or when market prices are below the marginal costs 
associated with our generating facilities.

DPL Inc.  43

 
DPL – Operation and Maintenance

$ in millions

2010 vs. 2009

Energy efficiency programs (1)
Health insurance / long-term disability
Low-income payment program (1)
Pension
Generating facilities operating and 

maintenance expenses
Insurance settlement, net
Other, net

Total operation and maintenance expense

$ 11.1
8.9
5.2
4.0

3.8
(3.4)
4.5
$ 34.1

(1) There is a corresponding increase in Revenues associated with these 
programs resulting in no impact to Net income.

During the year ended December 31, 2010, Operation 
and maintenance expense increased $34.1 million, 
or 11%, compared to the same period in 2009. This 
variance was primarily the result of:

■ higher expenses relating to energy efficiency 
programs that were put in place for our customers 
during 2009 and 2010,

■ increased health insurance and disability costs 
primarily due to a number of employees going on long-
term disability,

■ increased assistance for low-income retail customers 
which is funded by the USF revenue rate rider,

■ increased pension costs due largely to a decline in 
the values of pension plan assets during 2008 and 
increased benefit costs, and

■ increased expenses for generating facilities 
largely due to unplanned outages at jointly-owned 
production units.

During the year ended December 31, 2009, Operation 
and maintenance expense increased $24.0 million, or 
8%, compared to 2008. This variance was primarily the 
result of:

■ higher pension costs due largely to a decline in the 
values of pension plan assets from 2008 and increased 
benefit costs,

■ increases in assistance for low-income retail 
customers which is funded by the USF revenue 
rate rider,

■ expenses related to new energy efficiency programs 
put in place for our customers during 2009,

■ increased deferred compensation costs,

■ increases in employee benefit expense funded by the 
ESOP, and

■ increased health insurance costs that were partially 
related to higher disability costs.

These increases were partially offset by:

■ lower amortization of regulatory assets related 
to the 2004/2005 deferred storm costs and PJM 
administrative fees in 2009 as these deferred costs 
were fully recovered through rates during 2008 and in 
the first quarter of 2009, respectively, and

■ decreases in expenses for generating facilities 
largely due to unplanned outages in 2008 at lower-cost 
production units resulting in higher costs in that year. 
These decreases were partially offset by increased 
maintenance expenses associated with unplanned 
outages at jointly-owned production units during 2009.

These increases were partially offset by:

DPL – Depreciation and Amortization

During the year ended December 31, 2010, 
Depreciation and amortization expense decreased 
$6.1 million, or 4%, as compared to 2009. The 
decrease primarily reflects the impact of a depreciation 
study which resulted in lower depreciation rates on 
generation property which were implemented on July 1, 
2010, reducing the expense by approximately $4.8 
million during the year ended December 31, 2010.

During the year ended December 31, 2009, 

Depreciation and amortization expense increased 
$7.8 million, or 6%, as compared to 2008 primarily as 
a result of higher asset balances at the generating 
stations. These higher balances were due largely to the 
completion of the FGD projects during 2008.

■ an insurance settlement that reimbursed us for legal 
costs associated with our litigation against certain 
former executives.

$ in millions

2009 vs. 2008

Pension
Low-income payment program (1)
Energy efficiency programs (1) 
Deferred compensation
ESOP
Health insurance
Deferred 2004/2005 storm costs and  

PJM administrative fees

Generating facilities operating and 

maintenance expenses

Other, net

Total operation and maintenance expense

$ 6.2
6.1
5.9
4.1
3.3
3.2

(4.0)

(1.4)
0.6
$ 24.0

(1) There is a corresponding increase in Revenues associated with these 
programs resulting in no impact to Net income.

44  DPL Inc.

 
DPL – General Taxes

During the year ended December 31, 2010, General 
taxes increased $9.3 million, or 8%, as compared to 
2009. These increases were primarily the result of 
higher property tax accruals in 2010 compared to 2009, 
increased state excise taxes due to increased revenue 
and an adjustment to future credits against state gross 
receipt taxes.

During the year ended December 31, 2009, 
General taxes decreased $7.4 million, or 6%, as 
compared to 2008 primarily due to lower property tax 
accruals in 2009 compared to 2008 and lower kWh 
excise taxes resulting from lower retail sales volumes.

DPL – Investment Income (Loss)

During the year ended December 31, 2010, Investment 
income (loss) increased $2.4 million as compared to 
2009 primarily as a result of the $1.4 million expense 
incurred in 2009 related to the early redemption of debt 
(see subsequent paragraph below). In addition, DPL 
had higher cash and short-term investment balances 
in 2010 compared to 2009 which resulted in higher 
investment income.

During the year ended December 31, 2009, 
Investment income (loss) decreased $4.2 million, 
or 117%, as compared to 2008 primarily as a result 
of lower cash and short-term investment balances 
combined with overall lower market yields on 
investments in 2009. In addition, we also recorded 
a $1.4 million expense during 2009 related to a loss 
incurred upon the early redemption of a debt obligation.

DPL – Interest Expense

During the year ended December 31, 2010, Interest 
expense decreased $12.4 million, or 15%, as 
compared to 2009 primarily due to the early redemption 
in December 2009 of $52.4 million of the $195 million 
8.125% Note to DPL Capital Trust II and the redemption 
of DPL’s $175 million 8.00% Senior Notes in March 
2009. A premium of $3.7 million was incurred as an 
expense in 2009 upon the early debt redemption of 
$52.4 million referred to above.

During the year ended December 31, 2009, Interest 

expense decreased $7.7 million, or 8%, compared to 
2008 primarily due to:

■ a $12.8 million reduction in Interest expense due to 
the redemption of DPL’s $175 million 8.00% Senior 
Notes and the $100 million 6.25% Senior Notes in 
March 2009 and May 2008, respectively,

■ a $1.6 million write-off in 2008 of unamortized debt 
issuance costs relating to DP&L’s $90 million variable 
rate pollution control bonds following their repurchase 
from the bondholders in April 2008, and

■ $2.0 million of deferred interest carrying costs on 
regulatory assets primarily associated with the 2008 
incremental storm costs and the riders for RPM 
and TCRR.

The above decreases were partially offset by $6.4 
million of lower capitalized interest in 2009 compared to 
2008, due largely to the completion of the FGD projects 
at our DP&L and partner-operated generating stations, 
as well as a $3.7 million premium paid upon the early 
redemption of $52.4 million of DPL’s Note to DPL 
Capital Trust II.

DPL – Income Tax Expense

During the year ended December 31, 2010, Income tax 
expense increased $30.5 million, or 27%, as compared 
to 2009 primarily due to increases in pre-tax income.
During the year ended December 31, 2009, 
Income tax expense increased $9.6 million, or 9%, 
as compared to 2008, due to estimate to actual 
adjustments of 2008 taxes related to the Internal 
Revenue Code Section 199 deduction, adjustments to 
deferred tax liabilities and a 2008 settlement relating to 
the Ohio Franchise Tax. These increases were partially 
offset by a decrease in pre-tax book earnings, estimate 
to actual adjustments of 2008 state tax liabilities, 
adjustments to our current tax receivables and the 
phase-out of the Ohio Franchise Tax.

Results of Operations by Segment – DPL Inc.
During 2010, DPL, for the first time, met the GAAP 
requirements for separate segment reporting. DPL’s 
two segments are the Utility segment, comprised of its 
DP&L subsidiary, and the Competitive Retail segment, 
comprised of its DPLER subsidiary. These segments 
are discussed further below:

Utility Segment

The Utility segment is comprised of DP&L’s electric 
generation, transmission and distribution businesses 
which generate and sell electricity to residential, 
commercial, industrial and governmental customers. 
Electricity for the segment’s 24-county service area is 
primarily generated at eight coal-fired power plants and 
is distributed to more than 500,000 retail customers 
who are located in a 6,000 square mile area of West 
Central Ohio. DP&L also sells electricity to DPLER 
and any excess energy and capacity is sold into the 
wholesale market. DP&L’s transmission and distribution 
businesses are subject to rate regulation by federal and 
state regulators while rates for its generation business 
are deemed competitive under Ohio law.

DPL Inc.  45

 
Competitive Retail Segment

The Competitive Retail segment is comprised of DPLER’s competitive retail electric service business which sells 
retail electric energy under contract primarily to commercial and industrial customers who have selected DPLER as 
their alternative electric supplier. The Competitive Retail segment sells electricity to approximately 9,000 customers 
currently located throughout Ohio. Due to increased competition in Ohio, during 2010 we increased the number of 
employees and resources assigned to manage DPLER and increased its marketing to customers. The Competitive 
Retail segment’s electric energy used to meet its sales obligations was purchased from DP&L. During 2010, we 
implemented a new wholesale agreement between DP&L and DPLER. Under this agreement, intercompany sales 
from DP&L to DPLER were based on the market prices for wholesale power. In periods prior to 2010, DPLER’s 
purchases from DP&L were transacted at prices that approximated DPLER’s sales prices to its end-use retail 
customers. The Competitive Retail segment has no transmission or generation assets. The operations of DPLER are 
not subject to rate regulation by federal or state regulators.

Other

Included within Other are other businesses that do not meet the GAAP requirements for separate disclosure as 
reportable segments as well as certain corporate costs which include interest expense on DPL’s debt.

Management evaluates segment performance based on gross margin. In the discussions which follow, we have 

not provided extensive discussions of the results of operations related to 2009 and 2008 for the Competitive Retail 
segment because we believe that financial information is not comparable to the 2010 financial information. We have, 
however, included brief descriptions of the Competitive Retail segment’s financial results for 2009 and 2008 for 
informational purposes as required by GAAP following the Income Statement Highlights table below.

See Note 17 of Notes to Consolidated Financial Statements for further discussion of DPL’s reportable segments.
The following table presents DPL’s gross margin by business segment:

$ in millions

Utility
Competitive Retail
Other  
Adjustments and Eliminations

Total consolidated

For the years ended December 31,

Increase (Decrease)

2010

2009

2008

2010 vs 2009

2009 vs 2008

$ 1,035.1
38.5
42.7
(4.5)

$ 967.6
0.7
33.7
(3.7)

$ 961.6
0.2
23.1
(3.7)

$

67.5
37.8
9.0
(0.8)

$

6.0
0.5
10.6
–

$ 1,111.8

$ 998.3

$ 981.2

$ 113.5

$ 17.1

The financial condition, results of operations and cash flows of the Utility segment are identical in all material 
respects and for all periods presented, to those of DP&L which are included in this Form 10-K. We do not believe 
that additional discussions of the financial condition and results of operations of the Utility segment would enhance 
an understanding of this business since these discussions are already included under the DP&L discussions below.

46  DPL Inc.

 
Income Statement Highlights – Competitive Retail Segment

$ in millions

Revenues:
Retail
RTO and other

Cost of revenues:

Purchased power 

Gross margins (a)

Operation and maintenance expense
Other expenses (income), net

Total expenses, net
Earnings (Loss) from continuing operations 

before income tax

Income tax expense (benefit)

Net income (Loss)

Gross margin as a percentage of revenues

For the years ended December 31,

Increase (Decrease)

2010

2009

2008

2010 vs 2009

2009 vs 2008

$ 275.5
1.5
277.0

$ 64.8
0.7
65.5

$ 150.7
0.1
150.8

$ 210.7
0.8
211.5

238.5
38.5
7.8
1.4
9.2

64.8
0.7
2.7
1.5
4.2

150.6
0.2
0.9
(3.2)
(2.3)

$

$

29.3

10.5

18.8
13.9%

$ (3.5)

(0.8)

$ (2.7)
1.1%

$

$

2.5

0.6

1.9
0.1%

173.7
37.8
5.1
(0.1)
5.0

$

32.8

11.3

$

21.5

$ (85.9)
0.6
(85.3)

(85.8)
0.5
1.8
4.7
6.5

$ (6.0)

(1.4)

$ (4.6)

(a) For purposes of discussing operating results, we present and discuss gross margins. This format is useful to investors because it allows 
analysis and comparability of operating trends and includes the same information that is used by management to make decisions regarding our 
financial performance.

Competitive Retail Segment – Revenue

For the year ended December 31, 2010, the segment’s retail revenues increased $210.7 million, or 325%, as 
compared to 2009. The increase was primarily driven by increased levels of competition in the competitive retail 
electric service business in the state of Ohio which in turn has resulted in a significant number of DP&L’s retail 
customers switching their retail electric service to DPLER. Primarily as a result of the customer switching discussed 
above, the Competitive Retail segment sold approximately 4,546 million kWh of power to 9,002 customers during 
2010 compared to 1,464 million kWh to 390 customers during 2009.

For the year ended December 31, 2009, the segment’s retail revenues decreased $85.9 million, or 57%, as 

compared to 2008. This decrease primarily reflected customers switching their retail electric service from DPLER 
back to DP&L due to the expiration of a significant number of customers’ service contracts at the end of 2008. As a 
result, the Competitive Retail segment sold approximately 1,464 million kWh of power to 390 customers during 2009 
compared to 3,212 million kWh to 742 customers during 2008.

Competitive Retail Segment – Purchased Power

During the year ended December 31, 2010, the Competitive Retail segment purchased power increased $173.7 
million, or 268%, as compared to 2009 primarily due to higher purchased power volumes required to satisfy an 
increase in customer base resulting from customer switching. The Competitive Retail segment’s electric energy 
used to meet its sales obligations was purchased from DP&L. During 2010, we implemented a new wholesale 
agreement between DP&L and DPLER. Under this agreement, intercompany sales from DP&L to DPLER were 
based on the market prices for wholesale power. In periods prior to 2010, DPLER’s purchases from DP&L were 
transacted at prices that approximated DPLER’s sales prices to its end-use retail customers. This increase was 
partially offset by lower average prices paid for purchased power in 2010.

During the year ended December 31, 2009, purchased power decreased $85.8 million, or 57%, as compared 

to 2008. This decrease was primarily associated with lower 2009 retail volumes due to the expiration of some 
customers’ service contracts in 2008 as discussed under Competitive Retail Segment – Revenue above.

Competitive Retail Segment – Operation and Maintenance

DPLER’s operation and maintenance expenses include employee-related expenses, accounting, information 
technology, payroll, legal and other administration expenses. The higher operation and maintenance expense 
in 2010 as compared to 2009 and 2008 is reflective of increased marketing and customer maintenance costs 
associated with the increased sales volume and number of customers.

DPL Inc.  47

 
Results of Operations –  
The Dayton Power and Light Company (DP&L)

Income Statement Highlights – DP&L

DP&L – Revenues

The following table provides a summary of changes in 
DP&L’s Revenues from prior periods:

For the years ended December 31, 

$ in millions

2010 vs. 2009

2009 vs. 2008

$ in millions

2010

2009

2008

Revenues:
Retail
Wholesale
RTO revenues
RTO capacity 
revenues
Total revenues

Cost of revenues:

Fuel costs
Gains from sale  

of coal

Gains from sale of  

emission allowances
Net fuel

Purchased power 
RTO charges
RTO capacity 
charges
Net purchased 

$ 1,185.4
365.8
81.7

$ 1,167.2
181.9
86.1

$ 1,075.3
293.5
108.3

157.6
$ 1,790.5

115.2
$ 1,550.4

95.8
$ 1,572.9

$ 376.8

$ 384.9

$ 349.6

(4.1)

(56.3)

(83.4)

(0.8)
371.9

82.0
109.7

(5.0)
323.6

46.9
99.9

(34.8)
231.4

152.4
126.6

191.8

112.4

100.9

power

383.5

259.2

379.9

Total cost of revenues

$ 755.4

$ 582.8

$ 611.3

Gross margins (a)

$ 1,035.1

$ 967.6

$ 961.6

Gross margin as a 
percentage of 
revenues

57.8%

62.4%

61.1%

Operating income

$ 450.2

$ 421.9

$ 436.6

(a) For purposes of discussing operating results, we present and discuss 
gross margins. This format is useful to investors because it allows 
analysis and comparability of operating trends and includes the same 
information that is used by management to make decisions regarding 
our financial performance.

48  DPL Inc.

Retail
Rate
Volume
Other 

Total retail change

Wholesale
Rate
Volume

Total wholesale change

RTO capacity and other
RTO capacity and  
other revenues

Total revenues change

$ (46.9)
63.4
1.7
18.2

$

$ 191.7
(99.7)
(0.1)
91.9

$

$

75.0
108.9
$ 183.9

$ (230.5)
118.9
$ (111.6)

38.0
$
$ 240.1

$
$

(2.8)
(22.5)

For the year ended December 31, 2010, Revenues 
increased $240.1 million, or 15%, to $1,790.5 million 
from $1,550.4 million in the prior year. This increase 
was primarily the result of higher retail and wholesale 
sales volumes, higher average wholesale prices as 
well as increased RTO capacity and other revenues, 
partially offset by lower average retail rates. The 
revenue components for the year ended December 31, 
2010 are further discussed below:

■ Retail revenues increased $18.2 million primarily 
as a result of a 6% increase in retail sales volumes 
compared to those in the prior year period largely due 
to more favorable weather and improved economic 
conditions. The favorable weather conditions resulted 
in a 70% increase in the number of cooling degree 
days to 1,245 days from 734 days in 2009. Although 
DP&L had a number of customers that switched their 
retail electric service from DP&L to DPLER, an affiliated 
CRES provider, DP&L continued to provide distribution 
services to those customers within its service territory. 
The average retail rates decreased 4% overall primarily 
as a result of customers switching from DP&L to 
DPLER. The remaining distribution services provided 
by DP&L were billed at a lower rate resulting in a 
reduction of total average retail rates. The decrease in 
average retail rates resulting from customers switching 
was partially offset by the implementation of the fuel 
and energy efficiency riders, increased TCRR and RPM 
riders, and the incremental effect of the recovery of 
costs under the EIR. The above resulted in a favorable 
$63.4 million retail sales volume variance and an 
unfavorable $46.9 million retail price variance.

 
■ Wholesale revenues increased $183.9 million 
primarily as a result of a 26% increase in average 
wholesale prices combined with a 60% increase in 
wholesale sales volume due in large part to the effect 
of customer switching discussed in the immediately 
preceding paragraph. DP&L records wholesale 
revenues from its sale of transmission and generation 
services to DPLER associated with these switched 
customers. This resulted in a favorable $108.9 million 
wholesale sales volume variance and a favorable 
wholesale price variance of $75.0 million.

■ RTO capacity and other revenues, consisting 
primarily of compensation for use of DP&L’s 
transmission assets, regulation services, reactive 
supply and operating reserves, and capacity payments 
under the RPM construct, increased $38.0 million 
compared to the same period in 2009. This increase 
in RTO capacity and other revenues was primarily 
the result of a $42.4 million increase in revenues 
realized from the PJM capacity auction partially offset 
by a decrease of $4.4 million in transmission and 
congestion revenues.

For the year ended December 31, 2009, Revenues 
decreased $22.5 million, or 1%, to $1,550.4 million from 
$1,572.9 million in the prior year. This decrease was 
primarily the result of lower wholesale average prices 
and lower retail sales volume, partially offset by higher 
average retail rates and increased wholesale sales 
volume. The revenue components for the year ended 
December 31, 2009 are further discussed below:

■ Retail revenues increased $91.9 million resulting 
primarily from a 20% increase in average retail rates 
due largely to the incremental effect of the EIR and the 
implementation of the TCRR, RPM, energy efficiency 
and alternative energy riders, partially offset by a 9% 
decrease in retail sales volume driven largely by the 
effects of the economic recession and milder weather 
conditions. The milder weather conditions saw heating 
and cooling degree days decrease by 4% and 14% 
to 5,561 days and 734 days, respectively. As a result, 
retail revenues had a favorable $191.7 million price 
variance and an unfavorable $99.7 million sales 
volume variance.

■ Wholesale revenues decreased $111.6 million 
primarily as a result of a 56% decrease in wholesale 
average prices, partially offset by a 41% increase in 
sales volume, resulting in an unfavorable $230.5 million 
wholesale price variance and a favorable $118.9 million 
sales volume variance.

■ RTO capacity and other revenues, consisting 
primarily of compensation for use of DP&L’s 
transmission assets, regulation services, reactive 
supply and operating reserves, as well as capacity 
payments under the RPM construct, decreased $2.8 
million compared to the prior year. This decrease 
primarily resulted from $22.2 million of lower 
transmission and congestion revenues, partially offset 
by additional revenue of $19.4 million that was realized 
from the PJM capacity auction.

DP&L – Cost of Revenues

For the year ended December 31, 2010:

■ Net fuel costs, which include coal, gas, oil, and 
emission allowance costs, increased $48.3 million, or 
15%, compared to 2009, primarily due to the impact of 
lower gains realized from the sale of DP&L’s coal and 
excess emission allowances. During the year ended 
December 31, 2010, DP&L realized $4.1 million and 
$0.8 million in gains from the sale of coal and excess 
emission allowances, respectively, compared to $56.3 
million and $5.0 million, respectively, during 2009. The 
effect of these lower gains was partially offset by the 
impact of a 3% decrease in the volume of generation by 
our plants.

■ Net purchased power increased $124.3 million, or 
48%, compared to 2009, due largely to an increase 
of $89.2 million in RTO capacity and other charges 
which were incurred as a member of PJM, including 
costs associated with DP&L’s load obligations for retail 
customers. This increase included the net impact of the 
deferral and recovery of DP&L’s transmission, capacity 
and other PJM-related charges. Also contributing to the 
increase in net purchased power was a $37.6 million 
increase related to higher average market prices for 
purchased power, partially offset by a $2.5 million 
decrease associated with lower purchased power 
volumes. We purchase power to satisfy retail sales 
volume when generating facilities are not available due 
to planned and unplanned outages or when market 
prices are below the marginal costs associated with our 
generating facilities.

For the year ended December 31, 2009:

■ Net fuel costs, which include coal, gas, oil and 
emission allowance costs, increased $92.2 million, or 
40%, compared to 2008, primarily due to the impact of 
lower gains realized from the sales of coal and excess 
emission allowances combined with a 7% increase 
in the usage of fuel due mainly to the improved 
performance of our generating facilities. In 2009, DP&L 

DPL Inc.  49

 
realized $56.3 million and $5.0 million in gains from 
the sales of coal and excess emission allowances, 
respectively, compared to $83.4 million and $34.8 
million, respectively, during 2008. Also contributing 
to the increase in fuel costs was a 3% increase in the 
average cost of fuel consumed per kilowatt-hour largely 
resulting from higher market prices of coal combined 
with outages at lower-cost units.

■ Net purchased power decreased $120.7 million 
compared to 2008. The net decrease in purchased 
power was due in part to lower volumes of purchased 
power and lower average market rates of $74.8 
million and $30.8 million, respectively. The improved 
performance of our generating facilities, as mentioned 
in the preceding paragraph, resulted in increased 
generation output and a reduced demand for higher-
cost purchased power. Also contributing to the 
decrease in purchased power were lower costs relating 
to other RTO charges as well as the net deferral during 
2009 of costs relating to DP&L’s transmission, capacity 
and other PJM-related charges which were incurred as 
a member of PJM. This deferral is discussed in greater 
detail in Note 3 of Notes to Consolidated Financial 
Statements. These decreases were partially offset by 
increased RTO capacity charges. We purchase power 
to satisfy retail sales volume when generating facilities 
are not available due to planned and unanticipated 
outages, or when market prices are below the marginal 
costs associated with our generating facilities.

DP&L – Operation and Maintenance

$ in millions

2010 vs. 2009 

Energy efficiency programs (1)
Health insurance / long-term disability
Low-income payment program (1)
Pension
Generating facilities operating and 

maintenance expenses

Other, net

Total operation and  

maintenance expense

$ 11.1
8.9
5.1
4.0

3.6
4.0

$ 36.7

(1) There is a corresponding increase in Revenues associated with these 
programs resulting in no impact to Net income.

During the year ended December 31, 2010, Operation 
and maintenance expense increased $36.7 million, or 
13%, compared to 2009. This variance was primarily 
the result of:

■ higher expenses relating to energy efficiency 
programs that were put in place for our customers 
during 2009 and 2010,

■ increased health insurance and disability costs 
primarily due to a number of employees going on long-
term disability,

■ increased assistance for low-income retail customers 
which is funded by the USF revenue rate rider,

■ increased pension costs due largely to a decline in 
the values of pension plan assets during 2008 and 
increased benefit costs, and

■ increased expenses for generating facilities 
largely due to unplanned outages at jointly-owned 
production units.

$ in millions

2009 vs. 2008 

Pension
Low-income payment program (1)
Energy efficiency programs (1)
ESOP
Health insurance
Deferred 2004/2005 storm costs and  

PJM administrative fees

Generating facilities operating and 

maintenance expenses

Other, net

$ 6.1
6.1
5.9
3.3
3.2

(4.0)

(1.4)
1.2

Total operation and maintenance expense

$ 20.4

(1) There is a corresponding increase in Revenues associated with these 
programs resulting in no impact to Net income.

During the year ended December 31, 2009, Operation 
and maintenance expense increased $20.4 million, or 
7%, compared to 2008. This variance was primarily the 
result of:

■ higher pension costs due largely to a decline in the 
values of pension plan assets from 2008 and increased 
benefit costs,

■ increases in assistance for low-income retail 
customers which is funded by the USF revenue 
rate rider,

■ expenses related to new energy efficiency programs 
put in place for our customers during 2009,

■ increases in employee benefit expense funded by the 
ESOP, and

■ increased health insurance costs that were partially 
related to higher disability costs.

These increases are partially offset by:

■ lower amortization of regulatory assets related 
to the 2004/2005 deferred storm costs and PJM 
administrative fees in 2009 as these deferred costs 
were fully recovered through rates during 2008 and in 
the first quarter of 2009, respectively, and

50  DPL Inc.

 
■ decreases in expenses for generating facilities 
largely due to unplanned outages in 2008 at lower-cost 
production units resulting in higher costs in that year. 
These decreases were partially offset by increased 
maintenance expenses associated with unplanned 
outages at jointly-owned production units during 2009.

DP&L – Depreciation and Amortization

During the year ended December 31, 2010, 
Depreciation and amortization expense decreased $4.8 
million as compared to 2009. The decrease primarily 
reflected the impact of a depreciation study which 
resulted in lower depreciation rates on generation 
property which were implemented on July 1, 2010, 
reducing the expense by $3.4 million during the year 
ended December 31, 2010.

During the year ended December 31, 2009, 

Depreciation and amortization expense increased 
$7.7 million, or 6%, as compared to 2008 primarily as 
a result of higher asset balances at the generating 
stations. These higher balances were due largely to the 
completion of the FGD projects during 2008.

DP&L – General Taxes

During the year ended December 31, 2010, General 
taxes increased $7.3 million to $124.1 million compared 
to 2009. These increases were primarily the result of 
higher property tax accruals in 2010 compared to 2009, 
increased state excise taxes due to increased revenue 
and an adjustment to future credits against state gross 
receipt taxes.

During the year ended December 31, 2009, 

General taxes decreased $7.4 million, or 6%, compared 
to 2008 primarily due to lower property tax accruals in 
2009 compared to 2008 and lower kWh excise taxes 
resulting from lower retail sales volumes.

DP&L – Investment Income

Investment income realized during 2010 did not 
fluctuate significantly from that realized during 2009.
During the year ended December 31, 2009, 
Investment income decreased $4.2 million, or 60%, 
as compared to 2008 primarily as a result of lower 

gains realized from the sale of DPL common stock 
from DP&L’s Master Trust Plan used for deferred 
compensation distributions as well as lower cash and 
short-term investment balances combined with overall 
lower market yields on investments in 2009.

DP&L – Interest Expense

Interest expense recorded during 2010 did not fluctuate 
significantly from that recorded in 2009.

During the year ended December 31, 2009, 

Interest expense increased $2.0 million, or 5%, as 
compared to 2008 primarily as a result of $6.4 million of 
lower capitalized interest due largely to the completion 
of the FGD projects at our own and partner-operated 
generating stations. This increase was partially 
offset by:

■ a $1.6 million write-off in 2008 of unamortized debt 
issuance costs relating to DP&L’s $90 million variable 
rate pollution control bonds following their repurchase 
from the bondholders in April 2008, and

■ $2.0 million of deferred interest carrying costs 
on regulatory assets primarily associated with 
the 2008 incremental storm costs and the riders 
for RPM and TCRR. These Regulatory assets are 
further discussed in Note 3 of Notes to Consolidated 
Financial Statements.

DP&L – Income Tax Expense

During the year ended December 31, 2010, Income 
tax expense increased $10.7 million compared to 2009 
primarily due to increases in pre-tax income.

During 2009, Income tax expense increased $4.3 

million, or 4%, compared to 2008, due to estimate to 
actual adjustments of 2008 income taxes related to 
the Internal Revenue Code Section 199 deduction, 
adjustments to deferred tax liabilities and a 2008 
settlement relating to the Ohio Franchise Tax. These 
increases were partially offset by a decrease in pre-
tax book earnings, estimate to actual adjustments of 
2008 state tax liabilities, adjustments to our current 
tax receivables and the phase-out of the Ohio 
Franchise Tax.

DPL Inc. 

51

 
Financial Condition, Liquidity and Capital Requirements
DPL’s financial condition, liquidity and capital requirements include the consolidated results of its principal 
subsidiary DP&L. All material intercompany accounts and transactions have been eliminated in consolidation.  
The following table provides a summary of the cash flows for DPL and DP&L:

DPL

$ in millions

Net cash provided by operating activities
Net cash used for investing activities
Net cash used for financing activities

Net change
Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

DP&L

$ in millions

Net cash provided by operating activities
Net cash used for investing activities
Net cash used for financing activities

Net change
Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

For the years ended December 31,

2010

2009

2008

$ 464.2
(220.6)
(194.5)

$ 49.1
74.9

$ 124.0

$ 524.7
(164.7)
(347.6)

$ 12.4
62.5

$ 74.9

$ 361.2
(252.9)
(180.7)

$ (72.4)
134.9

$

62.5

For the years ended December 31,

2010

2009

2008

$ 446.4
(148.6)
(300.9)

$

(3.1)
57.1

$ 54.0

$ 513.7
(166.0)
(311.4)

$ 36.3
20.8

$ 57.1

$ 392.7
(240.1)
(145.0)

$

$

7.6
13.2

20.8

The significant items that have impacted the cash flows for DPL and DP&L are discussed in greater detail below:

Net Cash Provided by Operating Activities

The revenue from our energy business continues to be the principal source of cash from operating activities while 
our primary uses of cash include payments for fuel, purchased power, operation and maintenance expenses, 
interest and taxes. Management believes that the diversified retail customer mix of residential, commercial and 
industrial classes coupled with rate relief approved by the PUCO provides us with a reasonably predictable gross 
cash flow from operations.

DPL – Net Cash provided by Operating Activities

DPL’s Net cash provided by operating activities for the years ended December 31, 2010, 2009 and 2008 can be 
summarized as follows:

$ in millions

Earnings from continuing operations
Depreciation and amortization
Deferred income taxes
Income tax settlement
Contribution to pension plan
Deferred regulatory costs, net
Other

Net cash provided by operating activities

2010

2009

2008

$ 290.3 
139.4 
59.9 
–
(40.0)
16.0 
(1.4)

$ 464.2 

$ 229.1 
145.5 
201.6 
 –
 –
 (24.6)
(26.9)

$ 244.5 
137.7 
43.1 
 (42.0)
–
 (12.9)
(9.2)

$ 524.7 

$ 361.2 

For the year ended December 31, 2010, Net cash provided by operating activities was primarily a result of Earnings 
from continuing operations adjusted for noncash depreciation and amortization, combined with the following 
significant transactions:

■ The $59.9 million increase to Deferred income taxes primarily results from changes related to pension 
contributions, depreciation expense and repair expense.

52  DPL Inc.

 
■ DP&L contributed $40.0 million to the defined benefit pension plan in 2010.

■ $16.0 million of cash collected to pay for fuel, purchased power and other fuel related costs and transmission, 
capacity and other PJM-related costs incurred during 2010, in excess of cash expenditures. These costs reduced 
the Regulatory asset in accordance with the provisions of GAAP relating to regulatory accounting (see Note 3 of 
Notes to Consolidated Financial Statements) and are expected to reduce the amount to be collected from customers 
in future periods.

■ Other represents items that had a current period cash flow impact and includes changes in working capital and 
other future rights or obligations to receive or to pay cash. These items are primarily impacted by, among other 
factors, the timing of when cash payments are made for fuel, purchased power, operating costs, interest and taxes, 
and when cash is received from our utility customers and from the sales of coal and excess emission allowances.

For the year ended December 31, 2009, Net cash provided by operating activities was primarily a result of Earnings 
from continuing operations adjusted for noncash depreciation and amortization, combined with the following 
significant transactions:

■ The $201.6 million increase to Deferred income taxes primarily results from the recognition of certain tax 
benefits for 2008 and 2009 relating to a change in the tax accounting method for deductions pertaining to repairs, 
depreciation and mixed service costs. Primarily due to the recognition of these benefits during 2009, DPL received 
a net cash refund of state and federal income taxes totaling $94.6 million and, in addition, was able to offset 
$69.0 million of these benefits against income tax liabilities accrued in 2009.

■ $24.6 million of cash used primarily to pay for transmission, capacity and other PJM-related costs incurred during 
2009, net of recoveries. These costs were recorded as a Regulatory asset in accordance with the provisions 
of GAAP relating to regulatory accounting (see Note 3 of Notes to Consolidated Financial Statements) and are 
expected to be collected from customers during future years.

■ Other represents items that had a current period cash flow impact and includes changes in working capital and 
other future rights or obligations to receive or to pay cash. These items are primarily impacted by, among other 
factors, the timing of when cash payments are made for fuel, purchased power, operating costs, interest and taxes, 
and when cash is received from our utility customers and from the sales of coal and excess emission allowances.

For the year ended December 31, 2008, Net cash provided by operating activities was primarily a result of Earnings 
from continuing operations adjusted for noncash depreciation and amortization, combined with the following 
significant transactions:

■ Deferred income taxes increased by $43.1 million as a result of the acceleration of the deduction of newly installed 
FGD and SCR equipment for tax purposes, which had the effect of reducing current period income tax payments 
and increasing cash on hand.

■ The $42 million cash payment made in 2008 to the ODT following a tax settlement agreement.

■ $13.1 million of cash used to restore damage of a non-capital nature caused by the hurricane-force winds of 
September 2008 and other major 2008 storms. These costs were recorded as a Regulatory asset in accordance 
with the provisions of GAAP relating to regulatory accounting (see Note 3 of Notes to Consolidated Financial 
Statements) and are expected to be collected from customers during future years.

■ Other represents items that had a current period cash flow impact and includes changes in working capital and 
other future rights or obligations to receive or to pay cash. These items are primarily impacted by, among other 
factors, the timing of when cash payments are made for fuel, purchased power, operating costs, interest and taxes, 
and when cash is received from our utility customers and from the sales of coal and excess emission allowances.

DPL Inc.  53

 
DP&L – Net Cash provided by Operating Activities

DP&L’s Net cash provided by operating activities for the years ended December 31, 2010, 2009 and 2008 can  
be summarized as follows:

$ in millions

Net income 
Depreciation and amortization
Deferred income taxes
Income tax settlement
Contribution to pension plan
Deferred regulatory costs, net
Other

Net cash provided by operating activities

2010

2009

2008

$ 277.7
130.7
54.3
–
(40.0)
16.0
7.7
$ 446.4

$ 258.9
135.5
200.1
–
–
(24.6)
(56.2)
$ 513.7

$ 285.8
127.8
40.9
(42.0)
–
(12.9)
(6.9)
$ 392.7

For the years ended December 31, 2010, 2009 and 2008, the significant components of DP&L’s Net cash provided 
by operating activities are similar to those discussed under DPL’s Net cash provided by operating activities above.

DPL and DP&L – Net Cash used for Investing Activities

DPL’s and DP&L’s Net cash used for investing activities for the years ended December 31, 2010, 2009 and 2008 
can be summarized as follows:

$ in millions

2010

2009

2008

DP&L
Environmental and renewable energy capital expenditures
Capital upgrades due to 2008 storms
Other plant-related asset acquisitions
Other

DP&L’s net cash used for investing activities

Proceeds from sale of short-term investments
Purchases of short-term investments
Other

DPL’s net cash used for investing activities

$ (11.9)
–
(138.1)
1.4
$ (148.6)

17.1
(86.4)
(2.7)
$ (220.6)

$ (21.2)
–
(146.2)
1.4
$ (166.0)

25.7
(20.7)
(3.7)
$ (164.7)

$ (90.2)
(18.6)
(133.2)
1.9
$ (240.1)

34.2
(39.1)
(7.9)
$ (252.9)

For the year ended December 31, 2010, DP&L continued to see reductions in its environmental capital expenditures 
due to the completion of FGD and SCR projects including the FGD and SCR equipment completed and placed 
into service at Conesville during the fourth quarter of 2009. Approximately $4.2 million of the environmental capital 
expenditures incurred during 2010 relate to the construction of a solar energy facility at Yankee station. DP&L also 
continued to make upgrades and other investments in other generation, transmission and distribution equipment. 
Additionally, DPL purchased $54.2 million of VRDN securities, net of redemptions from various institutional securities 
brokers as well as $15.1 million of investment-grade fixed income corporate bonds. The VRDN securities are 
backed by irrevocable letters of credit. These securities have variable coupon rates that are typically re-set weekly 
relative to various short-term rate indices. DPL can tender these VRDN securities for sale upon notice to the broker 
and receive payment for the tendered securities within seven days.

For the year ended December 31, 2009, DP&L continued to see reductions in its environmental-related capital 
expenditures due to the completion of FGD and SCR projects. The expenditures in 2009 relate to the construction 
of FGD and SCR equipment at the Conesville generation station which was substantially completed and placed into 
service during the fourth quarter of 2009. DP&L also continued to make upgrades and other investments in other 
generation, transmission and distribution equipment.

For the year ended December 31, 2008, DP&L saw reduced cash outflows associated with environmental-related 
expenditures compared to 2007 due to projects relating to the installation of FGD and SCR equipment that had 
either been completed or were nearing completion. In addition, DP&L was forced to replace a portion of its 
distribution lines and equipment following the damage caused by the hurricane-force winds of September 2008 and 
other 2008 storms.

54  DPL Inc.

 
DPL – Net Cash used for Financing Activities

DPL’s Net cash used for financing activities for the years ended December 31, 2010, 2009 and 2008 can  
be summarized as follows:

$ in millions

Dividends paid on common stock
Repurchase of DPL common stock
Retirement of long-term debt
Repurchase of warrants
Proceeds from exercise of warrants
Cash withdrawn from restricted funds
Proceeds from exercise of stock options
Other

Net cash used for financing activities

2010

2009

2008

$ (139.7)
(56.4)
–
–
–
–
1.4
0.2
$ (194.5)

$ (128.8)
(64.4)
(227.4)
(25.2)
77.7
14.5
9.0
(3.0)
$ (347.6)

$ (120.5)
–
(100.0)
–
–
32.5
2.2
5.1
$ (180.7)

For the year ended December 31, 2010, DPL paid common stock dividends of $139.7 million. In addition, under the 
stock repurchase programs approved by the Board of Directors in October 2009 and October 2010 (see Note 12 of 
Notes to Consolidated Financial Statements), DPL repurchased approximately 2.18 million DPL common shares for 
$56.4 million.

For the year ended December 31, 2009, DPL redeemed long-term debt totaling $227.4 million and paid common 
stock dividends of $128.8 million. Under a stock repurchase program approved by the Board of Directors in 
October 2009 (see Note 12 of Notes to Consolidated Financial Statements), DPL repurchased approximately 
2.4 million DPL common shares for $64.4 million. In addition, DPL repurchased 8.6 million warrants for $25.2 million. 
DPL’s cash inflows during the period include $77.7 million received from the cash exercise of 3.7 million warrants 
and the withdrawal of the remaining balance of restricted funds of $14.5 million which was used primarily to fund 
the construction of FGD equipment at the Conesville generation station. DPL also received $9.0 million from option 
holders who exercised stock options due, in part, to the increase in our average stock price compared to 2008.

For the year ended December 31, 2008, DPL paid common stock dividends of $120.5 million, retired $100 million of 
long-term debt and withdrew $32.5 million from restricted funds held in trust to pay for environmental-related capital 
expenditures.

DP&L – Net Cash used for Financing Activities

DP&L’s Net cash used for financing activities for the years ended December 31, 2010, 2009 and 2008 can be 
summarized as follows:

$ in millions

Dividends paid on common stock to parent
Net loan (paid to) / received from parent
Cash withdrawn from restricted funds
Other

Net cash used for financing activities

2010

2009

2008

$ (300.0)
–
–
(0.9)
$ (300.9)

$ (325.0)
–
14.5
(0.9)
$ (311.4)

$ (155.0)
(20.0)
32.5
(2.5)
$ (145.0)

For the year ended December 31, 2010, DP&L’s Net cash used for financing activities primarily relates to 
$300 million in dividends.

For the year ended December 31, 2009, DP&L paid $325 million in dividends to DPL and withdrew the 

remaining balance of $14.5 million from restricted funds to pay for the Conesville FGD and SCR projects.

For the year ended December 31, 2008, DP&L paid $155 million in dividends to DPL, withdrew $32.5 million 

from restricted funds held in trust and repaid the net $20 million short-term loan from DPL.

Liquidity

We expect our existing sources of liquidity to remain sufficient to meet our anticipated obligations. Our business is 
capital intensive, requiring significant resources to fund operating expenses, construction expenditures, scheduled 
debt maturities, taxes, interest and dividend payments. For 2011 and subsequent years, we expect to satisfy these 

DPL Inc.  55

 
requirements with a combination of cash from operations and funds from the capital markets as our internal liquidity 
needs and market conditions warrant. We also expect that the borrowing capacity under credit facilities will continue 
to be available to manage working capital requirements during those periods.

At the filing date of this annual report on Form 10-K, DP&L has access to $420 million of short-term financing 

under two revolving credit facilities. The first facility for $220 million expires in November 2011 and has three 
participating banks; the lead bank has a total commitment of 36% while the other two have commitments of 32% 
each. The second facility, established in April 2010, is for $200 million and expires in April 2013. A total of five banks 
participate in this facility, with no bank having more than 35% of the total commitment.

$ in millions  

DP&L 
DP&L

Type

Maturity 

Commitment

Revolving 
 Revolving 

November 2011
April 2013

$ 220.0
200.0

$ 420.0

Amounts 
available at 
December 31, 2010

$ 220.0
200.0

$ 420.0

Each revolving credit facility has a $50 million LOC sublimit. As of December 31, 2010 and through the date of filing 
this annual report on Form 10-K, there were no outstanding LOCs on either facility.

DPL’s $297.4 million 6.875% senior notes due September 2011 have been reflected as a current liability. 

Management will continue to monitor and evaluate market conditions over the next several months and make a 
determination to either seek to refinance the senior notes or explore alternative financing arrangements.

Cash and cash equivalents for DPL and DP&L amounted to $124.0 million and $54.0 million, respectively, at 

December 31, 2010. At that date, DPL also had short-term investments amounting to $69.3 million.

On January 26, 2011, DPL signed an agreement with a third party to acquire $122.1 million of outstanding 
DPL Capital Trust II 8.125% trust preferred securities. The sale to DPL is contingent upon the third party’s ability to 
acquire the trust preferred securities.

In the event the third party is successful in acquiring the trust preferred securities, it has agreed to sell the trust 
preferred securities to DPL for a price of $134.3 million, plus any interest accrued through the date of closing. The 
closing is expected to occur on or before February 25, 2011. If this transaction closes, DPL expects to record a net 
loss on the reacquisition of the securities in the amount of approximately $15.3 million ($10.2 million net of tax) in 
the first quarter of 2011. Interest savings from the redemption of these securities are expected to be approximately 
$8.4 million ($5.6 million net of tax) for the remainder of 2011. DPL expects to finance this transaction using a 
combination of cash on hand and proceeds from the intended sale of some of its short-term investments.

In the event the third party is not able to acquire these securities, DPL will have no obligation to purchase these 

securities and will continue to carry these trust preferred securities as a long-term obligation on its Consolidated 
Balance Sheets.

Capital Requirements

Construction Additions

$ in millions

DPL 
DP&L

2010

$ 151
$ 148

Actual

2009

$ 145
$ 144

2008

$ 228
$ 225

2011

$ 310
$ 300

Projected

2012

$ 260
$ 255

2013

$ 200
$ 195

Planned construction additions for 2011 relate primarily to new investments in and upgrades to DP&L’s power 
plant equipment, and transmission and distribution system. Capital projects are subject to continuing review and 
are revised in light of changes in financial and economic conditions, load forecasts, legislative and regulatory 
developments and changing environmental standards, among other factors.

56  DPL Inc.

 
DPL, through its subsidiary DP&L, is projecting to spend an estimated $770 million in capital projects for 
the period 2011 through 2013. Approximately $20 million of this projected amount is to enable DP&L to meet the 
recently revised reliability standards of NERC. DP&L is subject to the mandatory reliability standards of NERC, and 
Reliability First Corporation (RFC), one of the eight NERC regions, of which DP&L is a member. NERC has recently 
changed the definition of the Bulk Electric System (BES) to include 100 kV and above facilities, thus expanding 
the facilities to which the reliability standards apply. DP&L’s 138 kV facilities were previously not subject to these 
reliability standards. Accordingly, DP&L anticipates spending approximately $100 million within the next 5 years 
to reinforce its 138 kV system to comply with these new NERC standards. Our ability to complete capital projects 
and the reliability of future service will be affected by our financial condition, the availability of internal funds and the 
reasonable cost of external funds. We expect to finance our construction additions with a combination of cash on 
hand, short-term financing, long-term debt and cash flows from operations.

Debt Covenants

As mentioned above, DP&L has access to $420 million of short-term financing under its two revolving credit facilities. 
The following financial covenant is contained in each revolving credit facility: DP&L’s total debt to total capitalization 
ratio is not to exceed 0.65 to 1.00. As of December 31, 2010, this covenant was met with a ratio of 0.40 to 1.00. 
The above ratio is calculated as the sum of DP&L’s current and long-term portion of debt, including its guaranty 
obligations, divided by the total of DP&L’s shareholders’ equity and total debt including guaranty obligations.

Credit Ratings

The following table outlines the debt credit ratings and outlook of each company, along with the effective dates of 
each rating and outlook for DPL and DP&L.

DPL (a)

A-
Baa1
BBB+

DP&L (b)

Outlook

Effective

AA-
Aa3
A

Stable
Stable
Stable

October 2010
June 2010
April 2010

Fitch Ratings
Moody’s Investors Service
Standard & Poor’s Corp.

(a) Credit rating relates to DPL’s Senior Unsecured debt.

(b) Credit rating relates to DP&L’s Senior Secured debt.

Off-Balance Sheet Arrangements

DPL – Guarantees

In the normal course of business, DPL enters into various agreements with its wholly-owned subsidiaries, DPLE and 
DPLER providing financial or performance assurance to third parties. These agreements are entered into primarily to 
support or enhance the creditworthiness otherwise attributed to DPLE and DPLER on a stand-alone basis, thereby 
facilitating the extension of sufficient credit to accomplish DPLE’s and DPLER’s intended commercial purposes. 
During the year ended December 31, 2010, DPL did not incur any losses related to the guarantees of DPLE’s and 
DPLER’s obligations and we believe it is unlikely that DPL would be required to perform or incur any losses in the 
future associated with any of the above guarantees of DPLE’s and DPLER’s obligations.

At December 31, 2010, DPL had $57.8 million of guarantees to third parties for future financial or performance 

assurance under such agreements, on behalf of DPLE and DPLER. The guarantee arrangements entered into by 
DPL with these third parties cover all present and future obligations of DPLE and DPLER to such beneficiaries and 
are terminable at any time by DPL upon written notice to the beneficiaries. The carrying amount of obligations for 
commercial transactions covered by these guarantees and recorded in our Consolidated Balance Sheets was 
$1.7 million at December 31, 2010 and $0.6 million at December 31, 2009.

DP&L owns a 4.9% equity ownership interest in an electric generation company which is recorded using the 

cost method of accounting under GAAP. As of December 31, 2010, DP&L could be responsible for the repayment 
of 4.9%, or $62.3 million, of a $1,272.2 million debt obligation that matures in 2026. This would only happen if this 
electric generation company defaulted on its debt payments. As of December 31, 2010, we have no knowledge of 
such a default.

DPL Inc.  57

 
Commercial Commitments and Contractual Obligations
We enter into various contractual obligations and other commercial commitments that may affect the liquidity of our 
operations. At December 31, 2010, these include:

$ in millions

Total

2011

2012-2013

2014-2015

Thereafter

Payment Year

DPL 
Long-term debt
Interest payments
Pension and postretirement payments
Capital leases
Operating leases
Coal contracts (a)
Limestone contracts (a)
Purchase orders and other  
contractual obligations

$ 1,324.4
677.9
258.5
0.2
0.9
1,409.0
42.9

$ 297.4
64.7
23.8
0.1
0.4
415.2
5.6

141.5

71.1

$

470.0
96.1
51.0
0.1
0.3
501.3
11.7

56.0

Total contractual obligations

$ 3,855.3

$ 878.3

$ 1,186.5

DP&L 
Long-term debt
Interest payments
Pension and postretirement payments
Capital leases
Operating leases
Coal contracts (a)
Limestone contracts (a)
Purchase orders and other  
contractual obligations

$

884.4
424.8
258.5
0.2
0.9
1,409.0
42.9

142.7

$

–
39.5
23.8
0.1
0.4
415.2
5.6

72.2

$

470.0
72.9
51.0
0.1
0.3
501.3
11.7

56.1

$

$

$

–
53.9
52.0
–
0.2
177.6
12.4

11.7

307.8

–
30.7
52.0
–
0.2
177.6
12.4

11.7

$

557.0
463.2
131.7
–
–
314.9
13.2

2.7

$ 1,482.7

$

414.4
281.7
131.7
–
–
314.9
13.2

2.7

Total contractual obligations

$ 3,163.4

$ 556.8

$ 1,163.4

$

284.6

$ 1,158.6

(a) Total at DP&L-operated units

Long-term debt:
DPL’s Long-term debt as of December 31, 2010, consists of DP&L’s first mortgage bonds and tax-exempt pollution 
control bonds and DPL’s unsecured senior notes. These long-term debt amounts include current maturities but 
exclude unamortized debt discounts.

DP&L’s Long-term debt as of December 31, 2010, consists of its first mortgage bonds and tax-exempt pollution 

control bonds. These long-term debt amounts include current maturities but exclude unamortized debt discounts.

See Note 5 of Notes to Consolidated Financial Statements.

Interest payments:
Interest payments are associated with the long-term debt described above. The interest payments relating to 
variable-rate debt are projected using the interest rate prevailing at December 31, 2010.

Pension and postretirement payments:
As of December 31, 2010, DPL, through its principal subsidiary DP&L, had estimated future benefit payments as 
outlined in Note 7 of Notes to Consolidated Financial Statements. These estimated future benefit payments are 
projected through 2020.

Capital leases:
As of December 31, 2010, DPL, through its principal subsidiary DP&L, had one immaterial capital lease that expires 
in 2013.

58  DPL Inc.

 
Operating leases:
As of December 31, 2010, DPL, through its principal 
subsidiary DP&L, had several immaterial operating 
leases with various terms and expiration dates.

Coal contracts:
DPL, through its principal subsidiary DP&L, has 
entered into various long-term coal contracts to supply 
the coal requirements for the generating plants it 
operates. Some contract prices are subject to periodic 
adjustment and have features that limit price escalation 
in any given year.

Limestone contracts:
DPL, through its principal subsidiary DP&L, has 
entered into various limestone contracts to supply 
limestone used in the operation of FGD equipment at its 
generating facilities.

Purchase orders and other contractual obligations:
As of December 31, 2010, DPL and DP&L had various 
other contractual obligations including non-cancelable 
contracts to purchase goods and services with various 
terms and expiration dates.

Reserve for uncertain tax positions:
Due to the uncertainty regarding the timing of future cash 
outflows associated with our unrecognized tax benefits 
of $19.4 million, we are unable to make a reliable 
estimate of the periods of cash settlement with the 
respective tax authorities and have not included such 
amounts in the contractual obligations table above.

Market Risk

We are subject to certain market risks including, but not 
limited to, changes in commodity prices for electricity, 
coal, environmental emissions and gas, changes in 
capacity prices and fluctuations in interest rates. We 
use various market risk sensitive instruments, including 
derivative contracts, primarily to limit our exposure 
to fluctuations in commodity pricing. Our Commodity 
Risk Management Committee (CRMC), comprising 
of members of senior management, is responsible 
for establishing risk management policies and the 
monitoring and reporting of risk exposures relating to 
our DP&L-operated generation units. The CRMC meets 
on a regular basis with the objective of identifying, 
assessing and quantifying material risk issues and 
developing strategies to manage these risks.

Commodity Pricing Risk
Commodity pricing risk exposure includes the impacts 
of weather, market demand, increased competition and 
other economic conditions. To manage the volatility 
relating to these exposures at our DP&L-operated 
generation units, we use a variety of non-derivative 
and derivative instruments including forward contracts 
and futures contracts. These instruments are used 
principally for economic hedging purposes and none 
are held for trading purposes. Derivatives that fall within 
the scope of derivative accounting under GAAP must 
be recorded at their fair value and marked to market 
unless they qualify for cash flow hedge accounting. 
MTM gains and losses on derivative instruments that 
qualify for cash flow hedge accounting are deferred in 
AOCI until the forecasted transactions occur. We adjust 
the derivative instruments that do not qualify for cash 
flow hedging to fair value on a monthly basis and where 
applicable, we recognize a corresponding Regulatory 
asset for above-market costs or a Regulatory liability 
for below-market costs in accordance with regulatory 
accounting under GAAP.

The coal market has increasingly been influenced 

by both international and domestic supply and 
consumption, making the price of coal more volatile 
than in the past, and while we have substantially all 
of the total expected coal volume needed to meet 
our retail and firm wholesale sales requirements 
for 2011 under contract, sales requirements may 
change, particularly for retail load. The majority of the 
contracted coal is purchased at fixed prices. Some 
contracts provide for periodic adjustments and some 
are priced based on market indices. Fuel costs are 
affected by changes in volume and price and are 
driven by a number of variables including weather, the 
wholesale market price of power, certain provisions in 
coal contracts related to government imposed costs, 
counterparty performance and credit, scheduled 
outages and generation plant mix. To the extent we 
are not able to hedge against price volatility or recover 
increases through our fuel and purchased power 
recovery rider that began in January 2010; our results 
of operations, financial condition or cash flows could be 
materially affected.

DPL Inc.  59

 
In addition, the Dodd-Frank Wall Street Reform and 

A 10% increase or decrease in the market price 

Consumer Protection Act (Dodd-Frank Act), signed 
into law in July 2010, contains significant requirements 
relating to derivatives, including, among others, a 
requirement that certain transactions be cleared on 
exchanges that would necessitate the posting of cash 
collateral for these transactions. The Dodd-Frank Act 
provides a potential exception from these clearing and 
cash collateral requirements for commercial end-users. 
The Dodd-Frank Act requires the Commodity Futures 
Trading Commission to establish rules to implement 
the Dodd-Frank Act’s requirements and exceptions. 
Requirements to post collateral could reduce the cost 
effectiveness of entering into derivative transactions to 
reduce commodity price and interest rate volatility or 
could increase the demands on our liquidity or require 
us to increase our levels of debt to enter into such 
derivative transactions. Even if we were to qualify for an 
exception from these requirements, our counterparties 
that do not qualify for the exception may pass along 
any increased costs incurred by them through higher 
prices and reductions in unsecured credit limits.

For purposes of potential risk analysis, we use 

a sensitivity analysis to quantify potential impacts 
of market rate changes on the statements of results 
of operations. The sensitivity analysis represents 
hypothetical changes in market values that may or may 
not occur in the future.

Commodity Derivatives
To minimize the risk of fluctuations in the market price 
of commodities, such as coal, power, and heating 
oil, we may enter into commodity-forward and futures 
contracts to effectively hedge the cost/revenues of 
the commodity. Maturity dates of the contracts are 
scheduled to coincide with market purchases/sales of 
the commodity. Cash proceeds or payments between 
us and the counter-party at maturity of the contracts 
are recognized as an adjustment to the cost of the 
commodity purchased or sold. We generally do not 
enter into forward contracts beyond thirty-six months.

of our wholesale power forward contracts and heating 
oil forwards at December 31, 2010 would not have a 
significant effect on Net income.

The following table provides information regarding 

the volume and average market price of our NYMEX 
coal forward derivative contracts at December 31, 2010 
and the effect to Net income if the market price were to 
increase or decrease by 10%:

Contract 
Volume 
(in millions 
of Tons) 

1.0
2.9
0.1

Weighted 
Average 
Market 
Price  
(per Ton) 

$  80.30
$  83.53
$  86.08

Increase / 
Decrease in 
Net Income 
(in millions) (a)

$  1.4
$  4.8
$  0.5

NYMEX Coal Forwards 

2011-Purchase 
2012-Purchase 
2013-Purchase 

(a) The Net Income effect of a 10% change in the market price of NYMEX 
Coal has been partially off-set by our partners’ share of the gain or loss 
associated with the jointly-owned power plants and also by the retail 
customers’ share of the gain or loss which is deferred on the balance 
sheet in conjunction with the fuel and purchased power recovery rider.

Wholesale Revenues
Approximately 17% of DPL’s and 16% of DP&L’s 
electric revenues for the year ended December 31, 
2010 were from sales of excess energy and capacity 
in the wholesale market (DP&L’s electric revenues 
in the wholesale market are reduced for sales to 
DPLER). Energy in excess of the needs of existing retail 
customers is sold in the wholesale market when we can 
identify opportunities with positive margins.

Approximately 16% of DPL’s and 15% of DP&L’s 

electric revenues for the year ended December 31, 
2009 were from sales of excess energy and capacity 
in the wholesale market. Energy in excess of the needs 
of existing retail customers is sold in the wholesale 
market when we can identify opportunities with positive 
margins.

60  DPL Inc.

 
The table below provides the effect on annual Net income as of December 31, 2010, of a hypothetical increase 
or decrease of 10% in the price per megawatt hour of wholesale power (DP&L’s electric revenues in the wholesale 
market are reduced for sales to DPLER), including the impact of a corresponding 10% change in the portion of 
purchased power used as part of the sale (note the share of the internal generation used to meet the DPLER 
wholesale sale would not be affected by the 10% change in wholesale prices):

$ in millions

Effect of 10% change in price per mWh

RPM Capacity Revenues and Costs

DPL

$ 10.1 

DP&L

$ 8.6 

As a member of PJM, DP&L receives revenues from the RTO related to its transmission and generation assets and 
incurs costs associated with its load obligations for retail customers. PJM, which has a delivery year which runs from 
June 1 to May 31, has conducted auctions for capacity through the 2013/14 delivery year. The clearing prices for 
capacity during the PJM delivery periods from 2008/9 through 2013/14 are as follows:

Capacity clearing price ($/MW-day)

112

102

174

110

16

28

2008/9

2009/10

2010/11

2011/12

2012/13

2013/14

PJM Delivery Year

Our computed average capacity prices by calendar year are reflected in the table below:

Computed average capacity price ($/MW-day)

Calendar Year

2009

106

2010

144

2011

137

2012

55

2013

23

Future RPM auction results are dependent on a number of factors, which include the overall supply and demand of 
generation and load, other state legislation or regulation, transmission congestion, and PJM’s RPM business rules. 
The volatility in the RPM capacity auction pricing has had and will continue to have a significant impact on DPL’s 
capacity revenues and costs. Although DP&L currently has an approved RPM rider in place to recover or repay 
any excess capacity costs or revenues, the RPM rider only applies to customers supplied under our SSO. Customer 
switching reduces the number of customers supplied under our SSO, causing more of the RPM capacity costs and 
revenues to be excluded from the RPM rider calculation.

The table below provides estimates of the effect on annual net income as of December 31, 2010, of a 
hypothetical increase or decrease of $10 in the RPM auction price. The table shows the impact resulting from 
capacity revenue changes. We did not include the impact of a change in the RPM capacity costs since these costs 
will either be recovered through the RPM rider for SSO retail customers or recovered through the development of 
our overall energy pricing for customers who do not fall under the SSO. These estimates include the impact of the 
RPM rider and are based on the 2010 levels of customer switching. As of December 31, 2010, approximately 60% 
of DP&L’s RPM capacity revenues and costs were recoverable from SSO retail customers through the RPM rider.

$ in millions

Effect of a $10 change in capacity auction pricing

DPL

$ 4.4

DP&L

$ 3.1

Capacity revenues and costs are also impacted by, among other factors, the levels of customer switching, our 
generation capacity, the levels of wholesale revenues and our retail customer load. In determining the capacity 
price sensitivity above, we did not consider the impact that may arise from the variability of these other factors.

Fuel and Purchased Power Costs

DPL’s and DP&L’s fuel (including coal, gas, oil and emission allowances) and purchased power costs as a 
percentage of total operating costs in the years ended December 31, 2010 and 2009 were 34% and 33%, 
respectively. We have substantially all of the total expected coal volume needed to meet our retail and firm 
wholesale sales requirements for 2011 under contract. The majority of our contracted coal is purchased at fixed 
prices although some contracts provide for periodic pricing adjustments. We may purchase SO2 allowances for 
2011; however, the exact consumption of SO2 allowances will depend on market prices for power, availability of our 
generation units and the actual sulfur content of the coal burned. We may purchase some NOx allowances for 2011 
depending on NOx emissions. Fuel costs are affected by changes in volume and price and are driven by a number 
of variables including weather, reliability of coal deliveries, scheduled outages and generation plant mix.

DPL Inc.  61

 
Purchased power costs depend, in part, upon the timing and extent of planned and unplanned outages of our 

generating capacity. We will purchase power on a discretionary basis when wholesale market conditions provide 
opportunities to obtain power at a cost below our internal generation costs.

Effective January 1, 2010, DP&L was allowed to recover its SSO retail customers’ share of fuel and purchased 
power costs, of approximately 60% of retail sales, as part of the fuel rider approved by the PUCO. The table below 
provides the effect on annual net income as of December 31, 2010, of a hypothetical increase or decrease of 10% 
in the prices of fuel and purchased power, adjusted for the approximate 60% recovery:

$ in millions

Effect of 10% change in fuel and purchased power

DPL

$ 13.0

DP&L

$ 12.6

Interest Rate Risk

As a result of our normal investing and borrowing activities, our financial results are exposed to fluctuations in 
interest rates, which we manage through our regular financing activities. We maintain both cash on deposit and 
investments in cash equivalents that may be affected by adverse interest rate fluctuations. DPL has fixed-rate long-
term debt and DP&L has both fixed and variable-rate long-term debt. DP&L’s variable-rate debt is comprised of 
publicly held pollution control bonds. The variable-rate bonds bear interest based on a prevailing rate that is reset 
weekly based on a comparable market index. Market indexes can be affected by market demand, supply, market 
interest rates and other economic conditions.

We partially hedge against interest rate fluctuations by entering into interest rate swap agreements to limit 
the interest rate exposure on the underlying financing. As of December 31, 2010, we have entered into interest 
rate hedging relationships with an aggregate notional amount of $200 million and $160 million related to planned 
future borrowing activities in calendar year 2011 and calendar year 2013, respectively. The average interest rate 
associated with the $200 million and $160 million aggregate notional amount interest rate hedging relationships 
is 4.1% and 3.8%, respectively. During the first quarter of 2011, we entered into additional interest rate hedging 
relationships with an aggregate notional amount of $75 million related to planned future borrowing activities in 
calendar year 2011. The average interest rate associated with the additional $75 million aggregate notional amount 
interest rate hedging relationships is 4.0%. We are limiting our exposure to changes in interest rates since we 
believe the market interest rates at which we will be able to borrow in the future may increase.

The carrying value of DPL’s debt was $1,324.1 million at December 31, 2010, consisting of DP&L’s first 
mortgage bonds, DP&L’s tax-exempt pollution control bonds, DPL’s unsecured notes and DP&L’s capital lease. 
The fair value of this debt was $1,307.5 million, based on current market prices or discounted cash flows using 
current rates for similar issues with similar terms and remaining maturities. The following table provides information 
about DPL’s debt obligations that are sensitive to interest rate changes:

Principal Payments and Interest Rate Detail by Contractual Maturity Date

DPL 

$ in millions

Long-term debt

Variable-rate debt
Average interest rate
Fixed-rate debt
Average interest rate
Total

2011

2012

2013

2014

2015

Thereafter

$

–
0.0%
$ 297.5
6.9%

$

–
0.0%
$ 0.1(b)
0.0%

$

–
0.0%
$ 470.0
5.1%

$

$

–
0.0%
–
0.0%

$

$

–
0.0%
–
0.0%

$ 100.0
0.3%
$ 456.5
5.8%

Carrying  
value at
December 31, 
2010 (a)

Fair  
value at
December 31, 
2010 (a)

$

100.0
0.3%
$ 1,224.1
5.8%
$ 1,324.1

$

100.0

$ 1,207.5

$ 1,307.5

(a) Fixed rate debt totals include unamortized debt discounts.

(b) Amount represents a capital lease obligation.

62  DPL Inc.

 
The carrying value of DP&L’s debt was $884.1 million at December 31, 2010, consisting of its first mortgage bonds, 
tax-exempt pollution control bonds and a capital lease. The fair value of this debt was $850.6 million, based on current 
market prices or discounted cash flows using current rates for similar issues with similar terms and remaining maturities. 
The following table provides information about DP&L’s debt obligations that are sensitive to interest rate changes:

Principal Payments and Interest Rate Detail by Contractual Maturity Date

DP&L

$ in millions

Long-term debt

Variable-rate debt
Average interest rate
Fixed-rate debt
Average interest rate
Total

2011

2012

2013

2014

2015

Thereafter

$

$

–
0.0%

0.1(b)

0.0%

$

$

–
0.0%

0.1(b)

0.0%

$

–
0.0%
$ 470.0
5.1%

$

$

–
0.0%
–
0.0%

$

$

–
0.0%
–
0.0%

$ 100.0
0.3%
$ 313.9
4.8%

Carrying  
value at 
December 31, 
2010 (a)

Fair  
value at 
December 31,  
2010 (a)

$ 100.0
0.3%
$ 784.1
5.0%
$ 884.1

$ 100.0

$ 750.6

$ 850.6

(a) Fixed rate debt totals include unamortized debt discounts.

(b) Amount represents a capital lease obligation.

Debt maturities occurring in 2011 are discussed under Financial Condition, Liquidity and Capital Requirements.

Long-term Debt Interest Rate Risk Sensitivity Analysis

Our estimate of market risk exposure is presented for our fixed-rate and variable-rate debt at December 31, 2010 
and 2009 for which an immediate adverse market movement causes a potential material impact on our financial 
condition, results of operations, or the fair value of the debt. We believe that the adverse market movement 
represents the hypothetical loss to future earnings and does not represent the maximum possible loss nor any 
expected actual loss, even under adverse conditions, because actual adverse fluctuations would likely differ. As 
of December 31, 2010 and 2009, we did not hold any market risk sensitive instruments which were entered into for 
trading purposes.

DPL

$ in millions

Long-term debt

Variable-rate debt
Fixed-rate debt
Total

DP&L

$ in millions

Long-term debt

Variable-rate debt
Fixed-rate debt
Total

Carrying value at
December 31,
2010

Fair value at
December 31,
2010

One Percent
Interest Rate
Risk

Carrying value at
December 31,
2009

Fair value at
December 31,
2009

One Percent
Interest Rate
Risk

$

100.0
1,224.1
$ 1,324.1

$

100.0
1,207.5
$ 1,307.5

$ 1.0
12.1
$ 13.1

$

100.0
1,224.1
$ 1,324.1

$

100.0
1,217.6
$ 1,317.6

$ 1.0
12.2
$ 13.2

Carrying value at
December 31,
2010

Fair value at
December 31,
2010

One Percent
Interest Rate
Risk

Carrying value at
December 31,
2009

Fair value at
December 31,
2009

One Percent
Interest Rate
Risk

$

$

100.0
784.1
884.1

$

$

100.0
750.6
850.6

$ 1.0
7.5
$ 8.5

$

$

100.0
784.3
884.3

$

$

100.0
744.5
844.5

$ 1.0
7.5
$ 8.5

DPL’s debt is comprised of both fixed-rate debt and variable-rate debt. In regard to fixed rate debt, the interest rate 
risk with respect to DPL’s long-term debt primarily relates to the potential impact a decrease of one percentage 
point in interest rates has on the fair value of DPL’s $1,224.1 million of fixed-rate debt and not on DPL’s financial 
condition or results of operations. On the variable-rate debt, the interest rate risk with respect to DPL’s long-term 
debt represents the potential impact an increase of one percentage point in the interest rate has on DPL’s results of 
operations related to DP&L’s $100 million variable-rate long-term debt outstanding as of December 31, 2010.

DPL Inc.  63

 
DP&L’s interest rate risk with respect to DP&L’s 

long-term debt primarily relates to the potential impact 
a decrease in interest rates of one percentage point 
has on the fair value of DP&L’s $784.1 million of 
fixed-rate debt and not on DP&L’s financial condition 
or DP&L’s results of operations. On the variable-rate 
debt, the interest rate risk with respect to DP&L’s long-
term debt represents the potential impact an increase 
of one percentage point in the interest rate has on 
DP&L’s results of operations related to DP&L’s $100.0 
million variable-rate long-term debt outstanding as of 
December 31, 2010.

Equity Price Risk

As of December 31, 2010, approximately 41% of the 
defined benefit pension plan assets were comprised 
of investments in equity securities and 59% related 
to investments in fixed income securities, cash and 
cash equivalents, and alternative investments. The 
equity securities are carried at their market value of 
approximately $119.9 million at December 31, 2010. A 
hypothetical 10% decrease in prices quoted by stock 
exchanges would result in an $12.0 million reduction in 
fair value as of December 31, 2010 and approximately 
a $1.0 million increase to the 2011 pension expense.

Credit Risk

Credit risk is the risk of an obligor’s failure to meet the 
terms of any investment contract, loan agreement or 
otherwise perform as agreed. Credit risk arises from 
all activities in which success depends on issuer, 
borrower or counterparty performance, whether 
reflected on or off the balance sheet. We limit our credit 
risk by assessing the creditworthiness of potential 
counterparties before entering into transactions with 
them and continue to evaluate their creditworthiness 
after transactions have been originated. We use the 
three leading corporate credit rating agencies and 
other current market-based qualitative and quantitative 
data to assess the financial strength of counterparties 
on an ongoing basis. We may require various forms 
of credit assurance from counterparties in order to 
mitigate credit risk.

Critical Accounting Estimates

DPL’s and DP&L’s Consolidated Financial Statements 
are prepared in accordance with U.S. GAAP. In 
connection with the preparation of these financial 
statements, our management is required to make 
assumptions, estimates and judgments that affect 
the reported amounts of assets, liabilities, revenues, 
expenses and the related disclosure of contingent 
liabilities. These assumptions, estimates and judgments 
are based on our historical experience and assumptions 

that we believe to be reasonable at the time. However, 
because future events and their effects cannot be 
determined with certainty, the determination of estimates 
requires the exercise of judgment. Our critical accounting 
estimates are those which require assumptions to be 
made about matters that are highly uncertain.

Different estimates could have a material effect 

on our financial results. Judgments and uncertainties 
affecting the application of these policies and estimates 
may result in materially different amounts being 
reported under different conditions or circumstances. 
Historically, however, recorded estimates have not 
differed materially from actual results. Significant items 
subject to such judgments include: the carrying value 
of property, plant and equipment; unbilled revenues; 
the valuation of derivative instruments; the valuation 
of insurance and claims liabilities; the valuation of 
allowances for receivables and deferred income taxes; 
regulatory assets and liabilities; reserves recorded for 
income tax exposures; litigation; contingencies; the 
valuation of AROs; and assets and liabilities related to 
employee benefits.

Impairments and Assets Held for Sale: In 
accordance with the provisions of GAAP relating to 
the accounting for impairments, long-lived assets 
to be held and used are reviewed for impairment 
whenever events or circumstances indicate that 
the carrying amount may not be recoverable. When 
required, impairment losses on assets to be held and 
used are recognized based on the fair value of the 
asset. We determine the fair value of these assets 
based upon estimates of future cash flows, market 
value of similar assets, if available or independent 
appraisals, if required. In analyzing the fair value 
and recoverability using future cash flows, we make 
projections based on a number of assumptions and 
estimates of growth rates, future economic conditions, 
assignment of discount rates and estimates of terminal 
values. An impairment loss is recognized if the carrying 
amount of the long-lived asset is not recoverable from 
its undiscounted cash flows. The measurement of 
impairment loss is the difference between the carrying 
amount and fair value of the asset.

Revenue Recognition (including Unbilled Revenue): 
We consider revenue realized, or realizable, and 
earned when persuasive evidence of an arrangement 
exists, the products or services have been 
provided to the customer, the sales price is fixed or 
determinable, and collection is reasonably assured. 
The determination of the energy sales to customers is 
based on the reading of their meters, which occurs on 
a systematic basis throughout the month. We recognize 
revenues using an accrual method for retail and other 

64  DPL Inc.

 
energy sales that have not yet been billed, but where 
electricity has been consumed. This is termed “unbilled 
revenues” and is a widely recognized and accepted 
practice for utilities. At the end of each month, unbilled 
revenues are determined by the estimation of unbilled 
energy provided to customers since the date of the last 
meter reading, projected line losses, the assignment of 
unbilled energy provided to customer classes and the 
average rate per customer class. Given our estimation 
method and the fact that customers are billed monthly, 
we believe it is unlikely that materially different results 
will occur in future periods when these amounts are 
subsequently billed.

Income Taxes: Judgment and the use of estimates 
are required in developing the provision for income 
taxes and reporting of tax-related assets and liabilities. 
The interpretation of tax laws involves uncertainty, 
since taxing authorities may interpret them differently. 
Ultimate resolution of income tax matters may result 
in favorable or unfavorable impacts to Net income 
and cash flows and adjustments to tax-related assets 
and liabilities could be material. We have adopted 
the provisions of GAAP relating to the accounting for 
uncertainty in income taxes. Taking into consideration 
the uncertainty and judgment involved in the 
determination and filing of income taxes, these GAAP 
provisions establish standards for recognition and 
measurement in financial statements of positions taken, 
or expected to be taken, by an entity on its income tax 
returns. Positions taken by an entity on its income tax 
returns that are recognized in the financial statements 
must satisfy a more-likely-than-not recognition 
threshold, assuming that the position will be examined 
by taxing authorities with full knowledge of all relevant 
information.

Deferred income tax assets and liabilities represent 
future effects on income taxes for temporary differences 
between the bases of assets and liabilities for financial 
reporting and tax purposes. We evaluate quarterly the 
probability of realizing deferred tax assets by reviewing 
a forecast of future taxable income and the availability 
of tax planning strategies that can be implemented, 
if necessary, to realize deferred tax assets. Failure to 
achieve forecasted taxable income or successfully 
implement tax planning strategies may affect the 
realization of deferred tax assets.

Regulatory Assets and Liabilities: Application 
of the provisions of GAAP relating to regulatory 
accounting requires us to reflect the effect of rate 
regulation in our Consolidated Financial Statements. 
For regulated businesses subject to federal or state 
cost-of-service rate regulation, regulatory practices 
that assign costs to accounting periods may differ from 

accounting methods generally applied by nonregulated 
companies. When it is probable that regulators will 
permit the recovery of current costs through future 
rates charged to customers, we defer these costs as 
Regulatory assets that otherwise would be expensed 
by nonregulated companies. Likewise, we recognize 
Regulatory liabilities when it is probable that regulators 
will require customer refunds through future rates 
and when revenue is collected from customers for 
expenses that are not yet incurred. Regulatory assets 
are amortized into expense and Regulatory liabilities 
are amortized into income over the recovery period 
authorized by the regulator.

We evaluate our Regulatory assets to determine 
whether or not they are probable of recovery through 
future rates and make various assumptions in our 
analyses. The expectations of future recovery are 
generally based on orders issued by regulatory 
commissions or historical experience, as well as 
discussions with applicable regulatory authorities. If 
recovery of a regulatory asset is determined to be less 
than probable, it will be written off in the period the 
assessment is made. We currently believe the recovery 
of our Regulatory assets is probable. See Note 3 of 
Notes to Consolidated Financial Statements.

AROs: In accordance with the provisions of GAAP 
relating to the accounting for AROs, legal obligations 
associated with the retirement of long-lived assets are 
required to be recognized at their fair value at the time 
those obligations are incurred. Upon initial recognition 
of a legal liability, costs are capitalized as part of the 
related long-lived asset and allocated to expense over 
the useful life of the asset. These GAAP provisions 
also require that components of previously recorded 
depreciation related to the cost of removal of assets 
upon retirement, whether legal AROs or not, must be 
removed from a company’s accumulated depreciation 
reserve. We make assumptions, estimates and 
judgments that affect the reported amounts of assets, 
liabilities and expenses as they relate to AROs. These 
assumptions and estimates are based on historical 
experience and assumptions that we believe to be 
reasonable at the time.

Insurance and Claims Costs: In addition to insurance 
obtained from third-party providers, MVIC, a wholly-
owned captive subsidiary of DPL, provides insurance 
coverage solely to us, our subsidiaries and, in some 
cases, our partners in commonly-owned facilities we 
operate, for workers’ compensation, general liability, 
property damage, and directors’ and officers’ liability. 
Insurance and Claims Costs on the Consolidated 
Balance Sheets of DPL include insurance reserves 
of approximately $10.1 million and $16.2 million for 

DPL Inc.  65

 
2010 and 2009, respectively. Furthermore, DP&L is 
responsible for claim costs below certain coverage 
thresholds of MVIC for the insurance coverage noted 
above. In addition, DP&L has medical, life and 
disability reserves for claims costs below certain 
coverage thresholds of third-party providers. DPL 
and DP&L record these additional insurance and 
claims costs of approximately $19.0 million and 
$11.3 million for 2010 and 2009, respectively, within 
Other current liabilities and Other deferred credits 
on the balance sheets. The MVIC reserves at DPL 
and the workers’ compensation, medical, life and 
disability reserves at DP&L are actuarially determined 
based on a reasonable estimation of insured events 
occurring. There is uncertainty associated with the 
loss estimates and actual results may differ from the 
estimates. Modification of these loss estimates based 
on experience and changed circumstances is reflected 
in the period in which the estimate is re-evaluated.

Pension and Postretirement Benefits: We account 
for and disclose pension and postretirement benefits in 
accordance with the provisions of GAAP relating to the 
accounting for pension and other postretirement plans. 
These GAAP provisions require the use of assumptions, 
such as the discount rate for liabilities and long-term 
rate of return on assets, in determining the obligations, 
annual cost, and funding requirements of the plans.
For 2011, we have decreased our long-term rate 
of return assumption from 8.50% to 8.00% for pension 
plan assets. We are maintaining our long-term rate of 
return assumption of 6.00% for other postemployment 
benefit plan assets. These rates of return represent our 
long-term assumptions based on our current portfolio 
mixes. We have decreased our assumed discount rate to 
5.31% from 5.75% for pension and to 4.96% from 5.35% 
for postretirement benefits expense to reflect current 
duration-based yield curve discount rates. A one percent 
change in the rate of return assumption for pension 
would result in an increase or decrease to the 2011 
pension expense of approximately $2.9 million. A one 
percent change in the discount rate for pension would 
result in an increase or decrease to the 2011 pension 
expense of approximately $2.5 million. We do not 
anticipate any special adjustments to expense in 2011.
In future periods, differences in the actual return 
on pension and other post-employment benefit plan 
assets and assumed return, or changes in the discount 
rate, will affect the timing of contributions to the plans, if 
any. We provide postretirement health care benefits to 

employees who retired prior to 1987. A one percentage 
point change in the assumed health care cost trend 
rate would affect postretirement benefit costs by less 
than $1.0 million.

Contingent and Other Obligations: During the 
conduct of our business, we are subject to a number 
of federal and state laws and regulations, as well as 
other factors and conditions that potentially subject us 
to environmental, litigation, insurance and other risks. 
We periodically evaluate our exposure to such risks 
and record reserves for those matters where a loss 
is considered probable and reasonably estimable in 
accordance with GAAP. In recording such reserves, 
we may make assumptions, estimates and judgments 
that affect the reported amounts of assets, liabilities 
and expenses as they relate to contingent and other 
obligations. These assumptions and estimates are 
based on historical experience and assumptions and 
may be subject to change. We, however, believe such 
estimates and assumptions are reasonable.

Legal and Other Matters
A discussion of Legal and Other Matters is described in 
Note 16 of Notes to Consolidated Financial Statements 
and in Item 3 – Legal Proceedings. A discussion of 
environmental matters and competition and regulation 
matters affecting both DPL and DP&L is described 
in Item 1 – Environmental Considerations and Item 1 – 
Competition and Regulation. Such discussions are 
incorporated by reference in this Management’s 
Discussion and Analysis of Financial Condition and 
Results of Operations and made a part hereof.

Recently Issued Accounting Pronouncements

A discussion of recently issued accounting 
pronouncements is described in Note 1 of Notes to 
Consolidated Financial Statements and such discussion 
is incorporated by reference in this Management’s 
Discussion and Analysis of Financial Condition and 
Results of Operations and made a part hereof.

Item 7A Quantitative and Qualitative 
Disclosures about Market Risk

The information required by this item of Form 10-K 
is set forth in the Market Risk section under Item 7 – 
Management’s Discussion and Analysis of Financial 
Condition and Results of Operations.

66  DPL Inc.

 
Item 8 Financial Statements and Supplementary Data

This report includes the combined filing of DPL and DP&L. DP&L is the principal subsidiary of DPL providing 
approximately 93% of DPL’s total consolidated gross margin and approximately 91% of DPL’s total consolidated 
asset base. Throughout this report, the terms “we,” “us,” “our” and “ours” are used to refer to both DPL and DP&L, 
respectively and altogether, unless the context indicates otherwise. Discussions or areas of this report that apply 
only to DPL or DP&L will clearly be noted in the section.

DPL Inc. 
Consolidated Statements of Results of Operations

$ in millions except per share amounts

2010

2009

2008

For the years ended December 31,

Revenues

Cost of revenues:
Fuel
Purchased power

Total cost of revenues

Gross margin

Operating expenses:
Operation and maintenance
Depreciation and amortization
General taxes

Total operating expenses

Operating income

Other income / (expense), net
Investment income (loss)
Interest expense
Other income / (deductions)

Total other income / (expense), net

Earnings from continuing operations before income tax
Income tax expense
Net income

Average number of common shares outstanding (millions):
Basic
Diluted

Earnings per share of common stock:
Basic
Diluted

Dividends paid per share of common stock

See Notes to Consolidated Financial Statements.

$ 1,883.1

$ 1,588.9

$ 1,601.6

383.9
387.4

771.3

1,111.8

340.6
139.4
127.4

607.4

504.4

1.8
(70.6)
(2.3)

(71.1)

433.3
143.0

290.3

115.6
116.1

2.51
2.50

1.21

$

$
$

$

330.4
260.2

590.6

998.3

306.5
145.5
118.1

570.1

428.2

(0.6)
(83.0)
(3.0)

(86.6)

341.6
112.5

229.1

112.9
114.2

2.03
2.01

1.14

$

$
$

$

243.0
377.4

620.4

981.2

282.5
137.7
125.5

545.7

435.5

3.6
(90.7)
(1.0)

(88.1)

347.4
102.9

244.5

110.2
115.4

2.22
2.12

1.10

$

$
$

$

DPL Inc.  67

DPL 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
Deferred income taxes
Changes in certain assets and liabilities:

Accounts receivable
Inventories
Prepaid taxes
Taxes applicable to subsequent years
Deferred regulatory costs, net
Accounts payable
Accrued taxes payable
Accrued interest payable
Pension, retiree and other benefits
Unamortized investment tax credit
Insurance and claims costs

Other

Net cash provided by operating activities

Cash flows from investing activities:
Capital expenditures
Proceeds from sale of property - other
Purchases of short-term investments and securities
Sales of short-term investments and securities
Other investing activities, net

Net cash used for investing activities

Cash flows from financing activities:
Dividends paid on common stock
Repurchase of DPL common stock
Repurchase of warrants
Proceeds from exercise of warrants
Reissuance of treasury stock
Retirement of long-term debt
Early redemption of Capital Trust II notes
Premium paid for early redemption of debt
Issuance of pollution control bonds, net
Retirement of pollution control bonds
Pollution control bond proceeds held in trust
Withdrawal of restricted funds held in trust, net
Withdrawals from revolving credit facilities
Repayment of borrowings from revolving credit facilities
Exercise of stock options
Tax impact related to exercise of stock options
Net cash used for financing activities

Cash and cash equivalents:
Net change
Balance at beginning of period

Cash and cash equivalents at end of period

Supplemental cash flow information:
Interest paid, net of amounts capitalized
Income taxes (refunded) / paid, net
Non-cash financing and investing activities:

Accruals for capital expenditures

See Notes to Consolidated Financial Statements.

68  DPL Inc.

For the years ended December 31,

2010

2009

2008

$ 290.3

$ 229.1

$ 244.5

139.4
59.9

(1.5)
10.4
(9.0)
(4.1)
16.0
17.8
1.2
(5.1)
(58.2)
(2.8)
(6.1)
16.0

464.2

(152.7)
–
(86.4)
17.1
1.4

(220.6)

(139.7)
(56.4)
–
–
–
–
–
–
–
–
–
–
–
–
1.4
0.2

(194.5)

49.1
74.9

$ 124.0

$
$

$

77.1
87.1

23.2

$

$
$

$

145.5
201.6

39.3
(20.6)
–
(1.5)
(24.6)
(65.0)
(2.4)
(1.5)
15.2
(2.8)
(1.4)
13.8

524.7

(172.3)
1.2
(20.7)
25.7
1.4

(164.7)

(128.8)
(64.4)
(25.2)
77.7
–
(175.0)
(52.4)
(3.7)
–
–
–
14.5
260.0
(260.0)
9.0
0.7

(347.6)

12.4
62.5

74.9

84.3
(94.6)

137.7
43.1

(18.7)
(0.2)
–
(10.0)
(12.9)
27.0
(46.1)
(0.8)
31.2
(2.8)
(2.4)
(28.4)

361.2

(243.6)
–
(39.1)
34.2
(4.4)

(252.9)

(120.5)
–
–
–
6.4
(100.0)
–
–
98.4
(90.0)
(10.0)
32.5
115.0
(115.0)
2.2
0.3

(180.7)

(72.4)
134.9

$

62.5

$
86.8
$ 127.3

20.8

$

34.1

DPL Inc.
Consolidated Balance Sheets

$ in millions

Assets

Current assets:
Cash and cash equivalents 
Short-term investments
Accounts receivable, net (Note 2)
Inventories (Note 2)
Taxes applicable to subsequent years
Other prepayments and current assets

Total current assets

Property, plant and equipment:
Property, plant and equipment
Less:  Accumulated depreciation and amortization

Construction work in process

Total net property, plant and equipment 

Other noncurrent assets:
Regulatory assets (Note 3)
Other deferred assets

Total other noncurrent assets

Total Assets

Liabilities and Shareholders’ Equity

Current liabilities:
Current portion – long-term debt (Note 5)
Accounts payable
Accrued taxes
Accrued interest
Customer security deposits
Other current liabilities

Total current liabilities

Noncurrent liabilities:
Long-term debt (Note 5)
Deferred taxes  (Note 6)
Regulatory liabilities (Note 3)
Pension, retiree and other benefits
Unamortized investment tax credit
Insurance and claims costs
Other deferred credits

Total noncurrent liabilities

Redeemable preferred stock of subsidiary

Commitments and contingencies (Note 16)

Common shareholders’ equity:
Common stock, at par value of $0.01 per share:

Shares authorized
Shares issued
Shares outstanding

December 2010

December 2009

250,000,000
163,724,211
116,924,844

250,000,000
163,724,211
118,966,767

Warrants
Common stock held by employee plans
Accumulated other comprehensive loss
Retained earnings

Total common shareholders’ equity 

At December 31,

2010

2009

$

124.0
69.3
215.5
115.3
63.7
40.6

628.4

5,353.6
(2,555.2)
2,798.4

119.7

2,918.1

189.0
77.8

266.8

$

74.9
–
212.8
125.7
59.5
24.1

497.0

5,269.2
(2,466.0)
2,803.2

89.0

2,892.2

214.2
38.3

252.5

$ 3,813.3

$ 3,641.7

$

297.5
98.7
68.1
18.4
18.7
40.9

542.3

1,026.6
625.4
139.4
64.9
32.4
10.1
130.8

2,029.6

22.9

$

100.6
77.2
70.2
23.5
19.4
24.0

314.9

1,223.5
569.1
125.4
111.7
35.2
16.2
122.9

2,204.0

22.9

1.2

2.7
(12.5)
(18.9)
1,246.0

1,218.5

1.2

2.9
(19.3)
(29.0)
1,144.1

1,099.9

Total Liabilities and Shareholders’ Equity

$ 3,813.3

$ 3,641.7

See Notes to Consolidated Financial Statements.

DPL Inc.  69

DPL Inc.
Consolidated Statements of Shareholders’ Equity

in millions (except Outstanding Shares)

Common Stock (b)

Outstanding 
Shares

Amount

Warrants

Common  
Stock Held  
by Employee 
Plans

Accumulated 
Other 
Comprehensive 
Income / (Loss)

Retained 
Earnings

Total

Beginning balance

113,558,444

$ 1.1

$ 50.0

$ (39.7)

$

0.6

$

870.5

$

882.5

2008:
Net income
Change in unrealized gains (losses) on  
financial instruments, net of tax
Change in deferred gains (losses) on  
cash flow hedges, net of tax

Change in unrealized gains (losses) on  
pension and postretirement benefits,  
net of tax

Total comprehensive income
Common stock dividends (a)
Treasury stock reissued
Tax effects to equity
Employee / Director stock plans
Other 

2,403,436

0.1

(19.0)

12.1

244.5

(0.5)

(1.7)

(21.5)

(120.5)
21.2
0.3
(0.3)
(0.1)

220.8
(120.5)
2.3
0.3
11.8
(0.1)

Ending balance

115,961,880

$ 1.2

$ 31.0

$ (27.6)

$ (23.1) $ 1,015.6

$

997.1

2009:
Net income
Change in unrealized gains (losses) on  
financial instruments, net of tax
Change in deferred gains (losses) on  
cash flow hedges, net of tax

Change in unrealized gains (losses) on  
pension and postretirement benefits,  
net of tax

Total comprehensive income
Common stock dividends (a)
Repurchase of warrants
Exercise of warrants
Treasury stock purchased
Treasury stock reissued
Tax effects to equity
Employee / Director stock plans
Other 

(13.6)
(14.5)

4,973,629
(2,388,391)
419,649

8.3

0.5

(3.7)

(2.7)

229.1

(128.8)
(11.6)
92.2
(64.4)
10.1
0.8
0.5
0.6

223.2
(128.8)
(25.2)
77.7
(64.4)
10.1
0.8
8.8
0.6

Ending balance

118,966,767

$ 1.2

$

2.9

$ (19.3)

$ (29.0) $ 1,144.1

$ 1,099.9

2010:
Net income
Change in unrealized gains (losses) on  
financial instruments, net of tax
Change in deferred gains (losses) on  
cash flow hedges, net of tax

Change in unrealized gains (losses) on  
pension and postretirement benefits,  
net of tax

Total comprehensive income
Common stock dividends (a)
Repurchase of warrants
Exercise of warrants
Treasury stock purchased
Treasury stock reissued
Tax effects to equity
Employee / Director stock plans

18,288
(2,182,751)
122,540

(0.2)
–

6.8

290.3

0.4

6.4

3.3

(139.7)

(56.4)
2.4
0.2
5.1

300.4
(139.7)
(0.2)
–
(56.4)
2.4
0.2
11.9

Ending balance

116,924,844

$ 1.2

$

2.7

$ (12.5)

$ (18.9) $ 1,246.0

$ 1,218.5

(a) Common stock dividends per share were $1.10 in 2008, $1.14 in 2009 and $1.21 per share in 2010.

(b) $0.01 par value, 250,000,000 shares authorized.

See Notes to Consolidated Financial Statements.

70  DPL Inc.

 
The Dayton Power and Light Company
Statements of Results of Operations

$ in millions 

Revenues

Cost of revenues:
Fuel
Purchased power

Total cost of revenues

Gross margin

Operating expenses:
Operation and maintenance
Depreciation and amortization
General taxes

Total operating expenses

Operating income

Other income / (expense), net:
Investment income 
Interest expense
Other income (deductions)

Total other income / (expense), net

Earnings before income tax 

Income tax expense
Net income

Dividends on preferred stock
Earnings on common stock

See Notes to Consolidated Financial Statements.

For the years ended December 31,

2010

2009

2008

$ 1,790.5

$ 1,550.4

$ 1,572.9

371.9
383.5

755.4

1,035.1

330.1
130.7
124.1

584.9

450.2

1.7
(37.1)
(1.9)

(37.3)

412.9

135.2

277.7

0.9

323.6
259.2

582.8

967.6

293.4
135.5
116.8

545.7

421.9

2.8
(38.5)
(2.8)

(38.5)

383.4

124.5

258.9

0.9

231.4
379.9

611.3

961.6

273.0
127.8
124.2

525.0

436.6

7.0
(36.5)
(1.1)

(30.6)

406.0

120.2

285.8

0.9

$

276.8

$

258.0

$

284.9

DPL Inc.  71

For the years ended December 31,

2010

2009

2008

$ 277.7

$ 258.9

$ 285.8

130.7
54.3

15.2
10.1
(8.9)
(3.6)
16.0
16.9
1.7
(5.4)
(58.2)
(2.8)
2.7

446.4

(150.0)
1.4

(148.6)

(300.0)
(0.9)
–
–
–
–
–
–
–

(300.9)

(3.1)
57.1

54.0

45.1
87.0

23.2

$

$
$

$

135.5
200.1

25.7
(20.5)
–
(1.3)
(24.6)
(65.9)
(0.9)
0.2
15.2
(2.8)
(5.9)

513.7

(167.4)
1.4

(166.0)

(325.0)
(0.9)
–
–
–
14.5
260.0
(260.0)
–

(311.4)

36.3
20.8

57.1

39.5
(94.7)

127.8
40.9

(3.5)
(0.2)
–
(9.9)
(12.9)
26.9
(50.0)
–
31.3
(2.8)
(40.7)

392.7

(242.0)
1.9

(240.1)

(155.0)
(0.9)
98.4
(90.0)
(10.0)
32.5
115.0
(115.0)
(20.0)

(145.0)

7.6
13.2

20.8

$

$
33.4
$ 127.0

20.8

$

34.1

$

$
$

$

The Dayton Power and Light Company
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
Deferred income taxes
Changes in certain assets and liabilities:

Accounts receivable
Inventories
Prepaid taxes
Taxes applicable to subsequent years
Deferred regulatory costs, net
Accounts payable
Accrued taxes payable
Accrued interest payable
Pension, retiree and other benefits
Unamortized investment tax credit

Other

Net cash provided by operating activities

Cash flows from investing activities:
Capital expenditures
Purchases of short-term investments and securities

Net cash used for investing activities

Cash flows from financing activities:
Dividends paid on common stock to parent
Dividends paid on preferred stock
Issuance of pollution control bonds, net
Retirement of pollution control bonds
Pollution control bond proceeds held in trust
Withdrawal of restricted funds held in trust, net 
Withdrawals from revolving credit facilities
Repayment of borrowings from revolving credit facilities
Payment of short-term debt held by parent

Net cash used for financing activities

Cash and cash equivalents:
Net change
Balance at beginning of period

Cash and cash equivalents at end of period

Supplemental cash flow information:
Interest paid, net of amounts capitalized
Income taxes (refunded) / paid, net
Non-cash financing and investing activities: 

Accruals for capital expenditures

See Notes to Consolidated Financial Statements.

72  DPL Inc.

The Dayton Power and Light Company
Balance Sheets

$ in millions

Assets

Current assets:
Cash and cash equivalents 
Accounts receivable, net (Note 2)
Inventories (Note 2)
Taxes applicable to subsequent years
Other prepayments and current assets

Total current assets

Property, plant and equipment:
Property, plant and equipment 
Less:  Accumulated depreciation and amortization

Construction work in process

Total net property, plant and equipment

Other noncurrent assets:
Regulatory assets (Note 3)
Other assets

Total other noncurrent assets

Total Assets

Liabilities and Shareholder’s Equity

Current liabilities:
Current portion – long-term debt (Note 5)
Accounts payable
Accrued taxes
Accrued interest
Customers security deposits
Other current liabilities

Total current liabilities

Noncurrent liabilities:
Long-term debt (Note 5)
Deferred taxes (Note 6)
Regulatory liabilities (Note 3)
Pension, retiree and other benefits
Unamortized investment tax credit
Other deferred credits

Total noncurrent liabilities

Redeemable preferred stock

Commitments and contingencies (Note 16)

Common shareholder’s equity:
Common stock, at par value of $0.01 per share
Other paid-in capital
Accumulated other comprehensive loss
Retained earnings

Total common shareholder’s equity 

Total Liabilities and Shareholder’s Equity

See Notes to Consolidated Financial Statements.

At December 31, 

2010

2009

$

54.0
178.0
114.2
62.8
42.7

451.7

5,093.7
(2,453.1)

2,640.6

119.6

2,760.2

189.0
74.5

263.5

$

57.1
192.0
124.3
59.2
26.0

458.6

5,011.0
(2,370.7)

2,640.3

87.9

2,728.2

214.2
56.4

270.6

$ 3,475.4

$ 3,457.4

$

0.1
95.7
66.6
7.7
18.7
33.6

222.4

884.0
598.0
139.4
64.9
32.4
131.9

1,850.6

22.9

0.4
782.4
(20.2)
616.9

$

100.6
75.1
68.6
13.1
19.4
23.2

300.0

783.7
553.0
125.4
111.7
35.2
122.9

1,731.9

22.9

0.4
781.6
(19.7)
640.3

1,379.5

$ 3,475.4

1,402.6

$ 3,457.4

DPL Inc.  73

The Dayton Power and Light Company
Statements of Shareholder’s Equity

in millions (except Outstanding Shares)

Common Stock (a)

Outstanding 
Shares

Amount

Other 
Paid-in 
Capital

Accumulated 
Other 
Comprehensive 
Income / (Loss)

Retained 
Earnings

Total

Beginning balance

41,172,173

$ 0.4

$ 784.8

$ 17.1

$ 577.6

$ 1,379.9

2008:
Net income
Change in unrealized gains (losses) on  
financial instruments, net of tax
Change in deferred gains (losses) on  
cash flow hedges, net of tax

Change in unrealized gains (losses) on  

pension and postretirement benefits,  
net of tax

Total comprehensive income
Common stock dividends 
Preferred stock dividends
Tax effects to equity
Employee / Director stock plans

Ending balance

2009:
Net income
Change in unrealized gains (losses) on  
financial instruments, net of tax
Change in deferred gains (losses) on  
cash flow hedges, net of tax

Change in unrealized gains (losses) on  

pension and postretirement benefits,  
net of tax

Total comprehensive income
Common stock dividends 
Preferred stock dividends
Tax effects to equity
Employee / Director stock plans
Other 

Ending balance

2010:
Net income
Change in unrealized gains (losses) on  
financial instruments, net of tax
Change in deferred gains (losses) on  
cash flow hedges, net of tax

Change in unrealized gains (losses) on  

pension and postretirement benefits,  
net of tax

Total comprehensive income
Common stock dividends 
Preferred stock dividends
Tax effects to equity
Employee / Director stock plans
Other 

Ending balance

(a) $0.01 par value, 50,000,000 shares authorized.

See Notes to Consolidated Financial Statements.

(9.8)

(1.7)

(21.7)

285.8

(155.0)
(0.9)

252.6
(155.0)
(0.9)
0.3
(2.0)

0.3
(2.0)

41,172,173

$ 0.4

$ 783.1

$ (16.1)

$ 707.5

$ 1,474.9

2.7

(3.7)

(2.7)

258.9

(325.0)
(0.9)

0.8
(2.5)
0.2

0.1

(0.2)

255.2
(325.0)
(0.9)
0.8
(2.5)
0.1

41,172,173

$ 0.4

$ 781.6

$ (19.7)

$ 640.3

$ 1,402.6

277.7

(1.0)

(2.8)

3.3

0.2
0.4
0.2

(300.0)
(0.9)

(0.2)

277.2
(300.0)
(0.9)
0.2
0.4
–

41,172,173

$ 0.4

$ 782.4

$ (20.2)

$ 616.9

$ 1,379.5

74  DPL Inc.

 
Notes to Consolidated Financial Statements

This report includes the combined filing of DPL 
and DP&L. DP&L is the principal subsidiary of 
DPL providing approximately 93% of DPL’s total 
consolidated gross margin and approximately 91% 
of DPL’s total consolidated asset base. Throughout 
this report, the terms “we,” “us,” “our” and “ours” are 
used to refer to both DPL and DP&L, respectively and 
altogether, unless the context indicates otherwise. 
Discussions or areas of this report that apply only to 
DPL or DP&L will clearly be noted in the section.

Some of the Notes presented in this report are 
only applicable to DPL or DP&L as indicated. The 
other Notes apply to both registrants and the financial 
information presented is segregated by registrant.

1 Overview and Summary of Significant 
Accounting Policies

Description of Business

DPL is a diversified regional energy company 
organized in 1985 under the laws of Ohio. During 2010, 
DPL, for the first time, met the GAAP requirements for 
separate segment reporting. DPL’s two segments are 
the Utility segment, comprised of its DP&L subsidiary, 
and the Competitive Retail segment, comprised of 
its DPLER subsidiary. Refer to Note 17 of Notes to 
Consolidated Financial Statements for more information 
relating to these reportable segments.

DP&L is a public utility incorporated in 1911 under 

the laws of Ohio. DP&L is engaged in generation, 
transmission, distribution and the sale of electricity to 
residential, commercial, industrial and governmental 
customers in a 6,000 square mile area of West Central 
Ohio. Electricity for DP&L’s 24 county service area is 
primarily generated at eight coal-fired power plants and 
is distributed to more than 500,000 retail customers. 
Principal industries served include automotive, food 
processing, paper, plastic manufacturing and defense.

DP&L’s sales reflect the general economic 
conditions and seasonal weather patterns of the area. 
DP&L sells any excess energy and capacity into the 
wholesale market.

DPLER sells competitive retail electric service, 
under contract, primarily to commercial and industrial 
customers. DPLER has approximately 9,000 customers 
currently located throughout Ohio. All of DPLER’s 
electric energy was purchased from DP&L to meet 
these sales obligations.

DPL’s other significant subsidiaries include DPLE, 
which owns and operates peaking generating facilities 

from which it makes wholesale sales of electricity and 
MVIC, our captive insurance company that provides 
insurance services to us and our subsidiaries. All of 
DPL’s subsidiaries are wholly-owned.

DPL also has a wholly-owned business trust, DPL 
Capital Trust II, formed for the purpose of issuing trust 
capital securities to investors.

DP&L’s electric transmission and distribution 

businesses are subject to rate regulation by federal 
and state regulators while its generation business is 
deemed competitive under Ohio law. Accordingly, 
DP&L applies the accounting standards for regulated 
operations to its electric transmission and distribution 
businesses and records regulatory assets when 
incurred costs are expected to be recovered in future 
customer rates, and regulatory liabilities when current 
cost recoveries in customer rates relate to expected 
future costs.

Financial Statement Presentation

We prepare Consolidated Financial Statements for 
DPL. DPL’s Consolidated Financial Statements 
include the accounts of DPL and its wholly-owned 
subsidiaries except for DPL Capital Trust II which is not 
consolidated, consistent with the provisions of GAAP.

DP&L has undivided ownership interests in seven 

electric generating facilities and numerous transmission 
facilities. These undivided interests in jointly-owned 
facilities are accounted for on a pro rata basis in 
DP&L’s Financial Statements.

Certain immaterial amounts from prior periods have 

been reclassified to conform to the current reporting 
presentation.

All material intercompany accounts and 
transactions are eliminated in consolidation.

The preparation of financial statements in 

conformity with GAAP requires us to make estimates 
and judgments that affect the reported amounts of 
assets and liabilities, the disclosure of contingent 
assets and liabilities, and the revenues and expenses 
of the periods reported. Actual results could differ 
from these estimates. Significant items subject to such 
estimates and judgments include: the carrying value 
of Property, plant and equipment; unbilled revenues; 
the valuation of derivative instruments; the valuation 
of insurance and claims liabilities; the valuation of 
allowances for receivables and deferred income taxes; 
regulatory assets and liabilities; reserves recorded for 
income tax exposures; litigation; contingencies; the 
valuation of AROs; and assets and liabilities related to 
employee benefits.

DPL Inc.  75

Revenue Recognition

Revenues are recognized from retail and wholesale 
electricity sales and electricity transmission and 
distribution delivery services. We consider revenue 
realized, or realizable, and earned when persuasive 
evidence of an arrangement exists, the products or 
services have been provided to the customer, the 
sales price is fixed or determinable, and collection 
is reasonably assured. Energy sales to customers 
are based on the reading of their meters that occurs 
on a systematic basis throughout the month. We 
recognize the revenues on our statements of results of 
operations using an accrual method for retail and other 
energy sales that have not yet been billed, but where 
electricity has been consumed. This is termed “unbilled 
revenues” and is a widely recognized and accepted 
practice for utilities. At the end of each month, unbilled 
revenues are determined by the estimation of unbilled 
energy provided to customers since the date of the last 
meter reading, estimated line losses, the assignment of 
unbilled energy provided to customer classes and the 
average rate per customer class.

All of the power produced at the generation plants 
is sold to an RTO and we in turn purchase it back from 
the RTO to supply our customers. These power sales 
and purchases are reported on a net hourly basis 
as revenues or purchased power on our statements 
of results of operations. We record expenses when 
purchased electricity is received and when expenses 
are incurred, with the exception of the ineffective 
portion of certain power purchase contracts that are 
derivatives and qualify for hedge accounting. We also 
have certain derivative contracts that do not qualify for 
hedge accounting, and their unrealized gains or losses 
are recorded prior to the receipt of electricity.

Allowance for Uncollectible Accounts

We establish provisions for uncollectible accounts 
by using both historical average loss percentages 
to project future losses and by establishing specific 
provisions for known credit issues.

Property, Plant and Equipment

We record our ownership share of our undivided 
interest in jointly-held plants as an asset in property, 
plant and equipment. Property, plant and equipment 
are stated at cost. For regulated transmission and 
distribution property, cost includes direct labor 
and material, allocable overhead expenses and an 
allowance for funds used during construction (AFUDC). 
AFUDC represents the cost of borrowed funds and 
equity used to finance regulated construction projects. 
Capitalization of AFUDC ceases at either project 

completion or at the date specified by regulators. 
AFUDC capitalized in 2010, 2009 and 2008 was 
not material.

For unregulated generation property, cost includes 
direct labor and material, allocable overhead expenses 
and interest capitalized during construction using 
the provisions of GAAP relating to the accounting for 
capitalized interest. Capitalized interest was $1.5 million, 
$2.4 million and $8.9 million in 2010, 2009 and 2008, 
respectively.

For substantially all depreciable property, when 

a unit of property is retired, the original cost of 
that property less any salvage value is charged to 
Accumulated depreciation and amortization consistent 
with the composite method of depreciation.

Property is evaluated for impairment when events 
or changes in circumstances indicate that its carrying 
amount may not be recoverable.

At December 31, 2010, neither DPL nor DP&L 
had any material plant acquisition adjustments or other 
plant-related adjustments.

Repairs and Maintenance

Costs associated with maintenance activities, primarily 
power plant outages, are recognized at the time the 
work is performed. These costs, which include labor, 
materials and supplies, and outside services required 
to maintain equipment and facilities, are capitalized or 
expensed based on defined units of property.

Depreciation Study – Change in Estimate

Depreciation expense is calculated using the straight-
line method, which allocates the cost of property over its 
estimated useful life. For DPL’s generation, transmission 
and distribution assets, straight-line depreciation 
is applied monthly on an average composite basis 
using group rates. In July 2010, DPL completed a 
depreciation rate study for non-regulated generation 
property based on its property, plant and equipment 
balances at December 31, 2009, with certain adjustments 
for subsequent property additions. The results of the 
depreciation study concluded that many of DPL’s 
composite depreciation rates should be reduced due to 
projected useful asset lives which are longer than those 
previously estimated. DPL adjusted the depreciation 
rates for its non-regulated generation property effective 
July 1, 2010, resulting in a net reduction of depreciation 
expense. For the year ended December 31, 2010, the 
net reduction in depreciation expense amounted to 
$4.8 million ($3.2 million net of tax) and increased diluted 
EPS by approximately $0.03 per share. On an annualized 
basis, the net reduction in depreciation expense is 
projected to be approximately $9.6 million ($6.4 million 
net of tax) or approximately $0.06 per diluted share.

76  DPL Inc.

For DPL’s generation, transmission, and distribution assets, straight-line depreciation is applied on an average 

annual composite basis using group rates that approximated 2.6% in 2010, 2.7% in 2009 and 2.7% in 2008.

The following is a summary of DPL’s Property, plant and equipment with corresponding composite depreciation 

rates at December 31, 2010 and 2009:

DPL
$ in millions

Regulated:

Transmission
Distribution
General
Non-depreciable
Total regulated

Unregulated:

Production / Generation 
Other
Non-depreciable

Total unregulated

Total property, plant and equipment  

in service

2010

Composite Rate

2009

Composite Rate

$

360.6
1,256.5
79.6
58.6
$ 1,755.3

$ 3,543.6
36.1
18.6
$ 3,598.3

2.5%
3.4%
3.7%
N/A

2.3%
3.6%
N/A

$

355.3
1,206.7
76.8
57.8
$ 1,696.6

$ 3,519.2
35.0
18.4
$ 3,572.6

2.4%
3.7%
3.1%
N/A

2.5%
3.7%
N/A

$ 5,353.6

2.6%

$ 5,269.2

2.7%

For DP&L’s generation, transmission, and distribution assets, straight-line depreciation is applied on an average 
annual composite basis using group rates that approximated 2.6% in 2010, 2.7% in 2009 and 2.6% in 2008.
The following is a summary of DP&L’s Property, plant and equipment with corresponding composite 

depreciation rates at December 31, 2010 and 2009:

DP&L
$ in millions

Regulated:

Transmission
Distribution
General
Non-depreciable
Total regulated

Unregulated:

Production / Generation
Non-depreciable

Total unregulated

Total property, plant and equipment  

in service

AROs

2010

Composite Rate

2009

Composite Rate

$

360.6
1,256.5
79.5
58.7
$ 1,755.3

$ 3,323.0
15.4
$ 3,338.4

2.5%
3.4%
3.7%
N/A

2.3%
N/A

$

355.3
1,206.7
76.8
57.8
$ 1,696.6

$ 3,299.1
15.3
$ 3,314.4

2.4%
3.7%
3.1%
N/A

2.4%
N/A

$ 5,093.7

2.6%

$ 5,011.0

2.7%

We recognize AROs in accordance with GAAP which requires legal obligations associated with the retirement 
of long-lived assets to be recognized at their fair value at the time those obligations are incurred. Upon initial 
recognition of a legal liability, costs are capitalized as part of the related long-lived asset and depreciated over the 
useful life of the related asset. Our legal obligations associated with the retirement of our long-lived assets consisted 
primarily of river intake and discharge structures, coal unloading facilities, loading docks, ice breakers and ash 
disposal facilities. Our generation AROs are recorded within other deferred credits on the balance sheets.

Estimating the amount and timing of future expenditures of this type requires significant judgment. Management 

routinely updates these estimates as additional information becomes available.

DPL Inc.  77

Changes in the Liability for Generation AROs

Inventories

$ in millions

Balance at January 1
Accretion expense
Additions
Settlements
Estimated cash flow revisions

 2010 

 2009 

$

16.2
0.2
0.8
(0.3)
0.6

$

13.2
0.8
2.1
(0.5)
0.6

Balance at December 31

$

17.5

$

16.2

Asset Removal Costs

We continue to record cost of removal for our regulated 
transmission and distribution assets through our 
depreciation rates and recover those amounts in 
rates charged to our customers. There are no known 
legal AROs associated with these assets. We have 
recorded $107.9 million and $99.1 million in estimated 
costs of removal at December 31, 2010 and 2009, 
respectively, as regulatory liabilities for our transmission 
and distribution property. These amounts represent 
the excess of the cumulative removal costs recorded 
through depreciation rates versus the cumulative 
removal costs actually incurred. See Note 3 of Notes to 
Consolidated Financial Statements.

Changes in the Liability for Transmission and 
Distribution Asset Removal Costs

$ in millions

Balance at January 1
Additions
Settlements
Balance at December 31

 2010 

$ 99.1
11.2
(2.4)

$ 107.9

$

 2009 

96.0
6.5
(3.4)

$

99.1

Regulatory Accounting

In accordance with GAAP, regulatory assets and liabilities 
are recorded in the balance sheets for our regulated 
transmission and distribution businesses. Regulatory 
assets are the deferral of costs expected to be recovered 
in future customer rates and Regulatory liabilities 
represent current recovery of expected future costs.

We evaluate our Regulatory assets each period and 

believe recovery of these assets is probable. We have 
received or requested a return on certain regulatory 
assets for which we are currently recovering or seeking 
recovery through rates. We record a return after it has 
been authorized in an order by a regulator. If we were 
required to terminate application of these GAAP provisions 
for all of our regulated operations, we would have to write 
off the amounts of all regulatory assets and liabilities to the 
statements of results of operations at that time. See Note 3 
of Notes to Consolidated Financial Statements.

Inventories are carried at average cost and include 
coal, limestone, oil and gas used for electric 
generation, and materials and supplies used for utility 
operations.

We account for our emission allowances as 
inventory and record emission allowance inventory at 
weighted average cost. We calculate the weighted 
average cost by each vintage (year) for which emission 
allowances can be used and charge to fuel costs the 
weighted average cost of emission allowances used 
each month. Net gains or losses on the sale of excess 
emission allowances, representing the difference 
between the sales proceeds and the weighted 
average cost of emission allowances, are recorded 
as a component of our fuel costs and are reflected in 
Operating income when realized. During the periods 
ended December 31, 2010, 2009 and 2008, we 
recognized gains from the sale of emission allowances 
in the amounts of $0.8 million, $5.0 million and $34.8 
million, respectively. Beginning in January 2010, a 
portion of the gains on emission allowances was used 
to reduce the overall fuel rider charged to our SSO 
retail customers.

Income Taxes

GAAP requires an asset and liability approach for 
financial accounting and reporting of income taxes with 
tax effects of differences, based on currently enacted 
income tax rates, between the financial reporting and 
tax basis of accounting reported as deferred tax assets 
or liabilities in the balance sheets. Deferred tax assets 
are recognized for deductible temporary differences. 
Valuation allowances are provided against deferred tax 
assets unless it is more likely than not that the asset will 
be realized.

Investment tax credits, which have been used to 

reduce federal income taxes payable, are deferred for 
financial reporting purposes and are amortized over 
the useful lives of the property to which they relate. For 
rate-regulated operations, additional deferred income 
taxes and offsetting regulatory assets or liabilities 
are recorded to recognize that income taxes will be 
recoverable or refundable through future revenues.

DPL files a consolidated U.S. federal income 
tax return in conjunction with its subsidiaries. The 
consolidated tax liability is allocated to each subsidiary 
based on the separate return method which is specified 
in our tax allocation agreement and which provides 
a consistent, systematic and rational approach. See 
Note 6 of Notes to Consolidated Financial Statements.

78  DPL Inc.

Financial Instruments

We classify our investments in debt and equity financial 
instruments of publicly traded entities into different 
categories: held-to-maturity and available-for-sale. 
Available-for-sale securities are carried at fair value and 
unrealized gains and losses on those securities, net of 
deferred income taxes, are presented as a separate 
component of shareholders’ equity. Other-than-
temporary declines in value are recognized currently 
in earnings. Financial instruments classified as held-to-
maturity are carried at amortized cost. The cost basis 
for public equity security and fixed maturity investments 
is average cost and amortized cost, respectively.

Short-Term Investments

DPL utilizes VRDNs as part of its short-term investment 
strategy. The VRDNs are of high credit quality and 
are secured by irrevocable letters of credit from major 
financial institutions. VRDN investments have variable 
rates tied to short-term interest rates. Interest rates 
are reset every seven days and these VRDNs can 
be tendered for sale back to the financial institution 
upon notice. Although DPL’s VRDN investments have 
original maturities over one year, they are frequently 
re-priced and trade at par. We account for these VRDNs 
as available-for-sale securities and record them as 
short-term investments at fair value, which approximates 
cost, since they are highly liquid and are readily 
available to support DPL’s current operating needs.
DPL also holds investment-grade fixed income 

corporate securities in its short-term investment 
portfolio. These securities are accounted for as held-to-
maturity investments.

Accounting for Taxes Collected from Customers 
and Remitted to Governmental Authorities

DP&L collects certain excise taxes levied by state or 
local governments from its customers. DP&L’s excise 
taxes are accounted for on a gross basis and recorded 
as revenues and general taxes in the accompanying 
Statements of Results of Operations as follows:

For the years ended December 31,

$ in millions

2010

2009

2008

State/Local excise taxes

$  51.7

$  49.5

$  52.3

Share-Based Compensation

We measure the cost of employee services received 
and paid with equity instruments based on the fair-
value of such equity instrument on the grant date. This 
cost is recognized in results of operations over the 
period that employees are required to provide service. 

Liability awards are initially recorded based on the fair-
value of equity instruments and are to be re-measured 
for the change in stock price at each subsequent 
reporting date until the liability is ultimately settled. The 
fair-value for employee share options and other similar 
instruments at the grant date are estimated using 
option-pricing models and any excess tax benefits 
are recognized as an addition to paid-in capital. The 
reduction in income taxes payable from the excess tax 
benefits is presented in the statements of cash flows 
within Cash flows from financing activities. See Note 10 
of Notes to Consolidated Financial Statements.

Cash and Cash Equivalents

Cash and cash equivalents are stated at cost, which 
approximates fair value. All highly liquid short-term 
investments with original maturities of three months or 
less are considered cash equivalents.

Financial Derivatives

All derivatives are recognized as either assets or 
liabilities in the balance sheets and are measured at 
fair value. Changes in the fair value are recorded in 
earnings unless they are designated as a cash flow 
hedge of a forecasted transaction or qualify for the 
normal purchases and sales exception.

We use forward contracts to reduce our exposure 

to changes in energy and commodity prices and as 
a hedge against the risk of changes in cash flows 
associated with expected electricity purchases. 
These purchases are used to hedge our full load 
requirements. We also hold forward sales contracts 
that hedge against the risk of changes in cash 
flows associated with power sales during periods of 
projected generation facility availability. We use cash 
flow hedge accounting when the hedge or a portion of 
the hedge is deemed to be highly effective and MTM 
accounting when the hedge or a portion of the hedge 
is not effective. See Note 9 of Notes to Consolidated 
Financial Statements.

Insurance and Claims Costs

In addition to insurance obtained from third-party 
providers, MVIC, a wholly-owned captive subsidiary 
of DPL, provides insurance coverage to us, our 
subsidiaries and, in some cases, our partners in 
commonly owned facilities we operate, for workers’ 
compensation, general liability, property damage, 
and directors’ and officers’ liability. Insurance and 
claims costs on the Consolidated Balance Sheets 
of DPL include insurance reserves of approximately 
$10.1 million and $16.2 million for 2010 and 2009, 

DPL Inc.  79

respectively. Furthermore, DP&L is responsible for claim costs below certain coverage thresholds of MVIC for 
the insurance coverage noted above. In addition, DP&L has medical, life, and disability reserves for claims costs 
below certain coverage thresholds of third-party providers. We record these additional insurance and claims costs 
of approximately $19.0 million and $11.3 million for 2010 and 2009, respectively, within Other current liabilities and 
Other deferred credits on the balance sheets. The MVIC reserves at DPL and the workers’ compensation, medical, 
life and disability reserves at DP&L are actuarially determined based on a reasonable estimation of insured events 
occurring. There is uncertainty associated with these loss estimates and actual results may differ from the estimates. 
Modification of these loss estimates based on experience and changed circumstances is reflected in the period in 
which the estimate is re-evaluated.

DPL Capital Trust II

DPL has a wholly-owned business trust, DPL Capital Trust II (the Trust), formed for the purpose of issuing trust 
capital securities to third-party investors. Effective 2003, DPL deconsolidated the Trust upon adoption of the 
accounting standards related to variable interest entities and currently treats the Trust as a nonconsolidated 
subsidiary. The Trust holds mandatorily redeemable trust capital securities. The investment in the Trust, which 
amounts to $3.6 million and $3.8 million at December 31, 2010 and 2009, respectively, is included in Other deferred 
assets within Other noncurrent assets. DPL also has a note payable to the Trust amounting to $142.6 million at 
December 31, 2010 and 2009 that was established upon the Trust’s deconsolidation in 2003. See Note 5 of Notes to 
Consolidated Financial Statements.

In addition to the obligations under the note payable mentioned above, DPL also agreed to a security obligation 

which represents a full and unconditional guarantee of payments to the capital security holders of the Trust.

Related Party Transactions

In the normal course of business, DP&L enters into transactions with other subsidiaries of DPL. All material 
intercompany accounts and transactions are eliminated in DPL’s Consolidated Financial Statements. The following 
table provides a summary of amounts transacted by DP&L with its related parties:

$ in millions

DP&L Revenues:

Sales to DPLER (a) 

DP&L Operation & Maintenance Expenses:

For the years ended December 31,

2010

2009

2008

$ 238.5

$ 64.8

$ 150.6

Premiums paid for insurance services provided by MVIC (b)
Expense recoveries for services provided to DPLER (c) 

$
$

(3.3)
5.8

$ (3.4)
$ 1.5

$
$

(3.5)
0.9

(a) DP&L sells power to DPLER to satisfy the electric requirements of DPLER’s retail customers. The revenue dollars associated with sales to DPLER are 
recorded as wholesale revenues by DP&L. The increase in DP&L’s sales to DPLER during the year ended December 31, 2010 compared to the same 
period in 2009 is primarily due to customers electing to switch their generation service from DP&L to DPLER.

(b) MVIC, a wholly-owned captive insurance subsidiary of DPL, provides insurance coverage to DP&L and other DPL subsidiaries for workers’ compensation, 
general liability, property damages and directors’ and officers’ liability. These amounts represent insurance premiums paid by DP&L to MVIC.

(c) In the normal course of business DP&L incurs and records expenses on behalf of DPLER. Such expenses include but are not limited to employee-
related expenses, accounting, information technology, payroll, legal and other administration expenses. DP&L subsequently charges these expenses to 
DPLER at DP&L’s cost and credits the expense in which they were initially recorded.

Recently Adopted Accounting Standards

Variable Interest Entities

We adopted ASU 2009-02 “Omnibus Update” (formerly SFAS No. 167, a revision to FASB Interpretation No. 46(R), 
“Consolidation of Variable Interest Entities”) (ASU 2009-02), on January 1, 2010. This standard updates FASC Topic 810 
“Consolidation.” ASU 2009-02 changes how a company determines when an entity that is insufficiently capitalized or 
is not controlled through voting (or similar) rights should be consolidated. The determination of whether a company is 
required to consolidate an entity is based on, among other things, an entity’s purpose and design and a company’s 
ability to direct the activities of the entity that most significantly impact the entity’s economic performance. ASU 2009-
02 did not have a material impact on our overall results of operations, financial condition or cash flows.

80  DPL Inc.

Fair Value Disclosures

We adopted ASU 2010-06 “Fair Value Measurements and Disclosures” (ASU 2010-06) on January 1, 2010. This 
standard updates FASC Topic 820 “Fair Value Measurements and Disclosures.” ASU 2010-06 requires additional 
disclosures about fair value measurements including transfers in and out of Levels 1 and 2 and a higher level 
of disaggregation for the different types of financial instruments. For the reconciliation of Level 3 fair value 
measurements, information about purchases, sales, issuances and settlements are presented separately. 
ASU 2010-06 did not have a material impact on our overall results of operations, financial condition or cash flows. 
See Note 8 of Notes to Consolidated Financial Statements.

Recently Issued Accounting Standards

There were no recently issued accounting standards that could potentially have a significant impact on our 
financial statements.

2 Supplemental Financial Information

DPL Inc.

$ in millions

Accounts receivable, net:

Unbilled revenue
Customer receivables
Amounts due from partners in jointly-owned plants
Coal sales
Other
Provision for uncollectible accounts
Total accounts receivable, net

Inventories, at average cost:

Fuel, limestone and emission allowances
Plant materials and supplies
Other

Total inventories, at average cost

DP&L

$ in millions

Accounts receivable, net:

Unbilled revenue
Customer receivables
Amounts due from partners in jointly-owned plants
Coal sales
Other
Provision for uncollectible accounts
Total accounts receivable, net

Inventories, at average cost:

Fuel, limestone and emission allowances
Plant materials and supplies
Other

Total inventories, at average cost

At December 31,

2010

2009

$

84.5
113.9
7.0
4.0
7.0
(0.9)
$ 215.5

$

73.2
38.8
3.3
$ 115.3

$

74.9
99.4
12.6
10.6
16.4
(1.1)
$ 212.8

$

85.8
38.5
1.4
$ 125.7

At December 31,

2010

2009

$

64.3
95.6
7.0
4.0
7.9
(0.8)
$ 178.0

$

73.2
37.7
3.3
$ 114.2

$

71.0
94.4
12.6
10.6
4.5
(1.1)
$ 192.0

$

85.8
37.1
1.4
$ 124.3

DPL Inc.  81

3 Regulatory Matters

In accordance with GAAP, regulatory assets and liabilities are recorded in the consolidated balance sheets for our 
regulated electric transmission and distribution businesses. Regulatory assets are the deferral of costs expected to 
be recovered in future customer rates and regulatory liabilities represent current recovery of expected future costs 
or gains probable of recovery being reflected in future rates.

We evaluate our regulatory assets each period and believe recovery of these assets is probable. We have 

received or requested a return on certain regulatory assets for which we are currently recovering or seeking 
recovery through rates. We record a return after it has been authorized in an order by a regulator.

Regulatory assets and liabilities on the consolidated balance sheets of DPL and DP&L include:

$ in millions

Regulatory Assets:

Deferred recoverable income taxes
Pension benefits
Unamortized loss on reacquired debt
Electric Choice systems costs
Regional transmission organization costs
TCRR, transmission, ancillary and other PJM-related costs
RPM capacity costs
Deferred storm costs - 2008
Power plant emission fees
CCEM smart grid and advanced metering infrastructure costs
CCEM energy efficiency program costs
Other costs

Total regulatory assets

Regulatory Liabilities:

Estimated costs of removal - regulated property
SECA net revenue subject to refund
Postretirement benefits 
Fuel and purchased power recovery costs
Other costs

Total regulatory liabilities

Type of  
Recovery (a)

Amortization 
Through

At December 31,

2010

2009

B/C
C
C
F
D
F
F
D
C
D
F

Ongoing
Ongoing
Ongoing
2011
2014
2011
2011

Ongoing

Ongoing

C

Ongoing

$

29.9
81.1
14.3
0.9
5.5
11.8
2.7
16.9
6.6
6.6
4.8
7.9
$ 189.0

$ 107.9
15.4
6.1
10.0
–
$ 139.4

$

36.8
85.2
15.6
4.0
7.0
5.5
20.0
16.0
6.3
6.5
3.6
7.7
$ 214.2

$

99.1
20.1
5.1
–
1.1
$ 125.4

(a) B – Balance has an offsetting liability resulting in no impact on rate base.
  C – Recovery of incurred costs without a rate of return.
  D – Recovery not yet determined, but is probable of occurring in future rate proceedings.

F – Recovery of incurred costs plus rate of return.

Regulatory Assets

Deferred recoverable income taxes represent deferred income tax assets recognized from the normalization of flow 
through items as the result of amounts previously provided to customers. This is the cumulative flow through benefit 
given to regulated customers that will be collected from them in future years. Since currently existing temporary 
differences between the financial statements and the related tax basis of assets will reverse in subsequent periods, 
these deferred recoverable income taxes will decrease over time.

Pension benefits represent the qualifying FASC Topic 715 “Compensation – Retirement Benefits” costs of our 
regulated operations that for ratemaking purposes are deferred for future recovery. We recognize an asset for a 
plan’s overfunded status or a liability for a plan’s underfunded status, and recognize, as a component of other 
comprehensive income (OCI), the changes in the funded status of the plan that arise during the year that are not 
recognized as a component of net periodic benefit cost. This regulatory asset represents the regulated portion that 
would otherwise be charged as a loss to OCI.

Unamortized loss on reacquired debt represents losses on long-term debt reacquired or redeemed in prior periods. 
These costs are being amortized over the lives of the original issues in accordance with FERC and PUCO rules.

82  DPL Inc.

 
Electric Choice systems costs represent costs incurred 
to modify the customer billing system for unbundled 
customer rates and electric choice utility bills relative 
to other generation suppliers and information reports 
provided to the state administrator of the low-income 
payment program. In March 2006, the PUCO issued 
an order that approved our tariff as filed. We began 
collecting this rider immediately and expect to recover 
all costs over five years.

Regional transmission organization costs represent 
costs incurred to join an RTO. The recovery of these 
costs will be requested in a future FERC rate case. In 
accordance with FERC precedence, we are amortizing 
these costs over a 10-year period that began in 2004 
when we joined the PJM RTO.

TCRR, transmission, ancillary and other PJM-related 
costs represent the costs related to transmission, 
ancillary service and other PJM-related charges 
that have been incurred as a member of PJM. We 
review retail rates and are required to make true-up 
adjustments on an annual basis.

RPM capacity costs represent the costs related to 
PJM RPM assigned to DP&L that have not yet been 
recovered through the RPM rider. We review this rate 
and make true-up adjustments on an annual basis.

Deferred storm costs – 2008 relate to costs incurred 
to repair the damage caused by hurricane force 
winds in September 2008, as well as other major 2008 
storms. On January 14, 2009, the PUCO granted 
DP&L the authority to defer these costs with a return 
until such time that DP&L seeks recovery in a future 
rate proceeding.

Power plant emission fees represent costs paid to the 
State of Ohio since 2002. An application is pending 
before the PUCO to amend an approved rate rider that 
had been in effect to collect fees that were paid and 
deferred in years prior to 2002. The deferred costs 
incurred prior to 2002 have been fully recovered. As 
the previously approved rate rider continues to be in 
effect, we believe these costs are probable of future 
rate recovery.

CCEM smart grid and AMI costs represent costs 
incurred as a result of studying and developing 
distribution system upgrades and implementation of 
AMI. Consistent with the ESP Stipulation, DP&L re-filed 
its smart grid and AMI business cases with the PUCO 
on August 4, 2009 seeking recovery of costs associated 
with a 10-year plan to deploy smart meters, distribution 
and substation automation, core telecommunications, 

supporting software and in-home technologies. On 
October 19, 2010, DP&L elected to withdraw the re-filed 
case pertaining to the Smart Grid and AMI programs. 
The PUCO accepted the withdrawal in an order issued 
on January 5, 2011. The PUCO also indicated that it 
expects DP&L to continue to monitor other utilities’ Smart 
Grid and AMI programs and to explore the potential 
benefits of investing in Smart Grid and AMI programs 
and that DP&L will, when appropriate, file new Smart 
Grid and/or AMI business cases in the future. We plan to 
file to recover these deferred costs in a future regulatory 
rate proceeding. Based on past PUCO precedent, we 
believe these costs are probable of future recovery in 
rates.

CCEM energy efficiency program costs represent 
costs incurred to develop and implement various new 
customer programs addressing energy efficiency. These 
costs are being recovered through an energy efficiency 
rider that began July 1, 2009 and is subject to a two-year 
true-up for any over/under recovery of costs.

Other costs primarily include consumer education 
advertising costs regarding electric deregulation, 
settlement system costs, other PJM and rate case 
costs and alternative energy costs that are or will be 
recovered over various periods.

Regulatory Liabilities

Estimated costs of removal – regulated property reflect 
an estimate of amounts collected in customer rates for 
costs that are expected to be incurred in the future to 
remove existing transmission and distribution property 
from service when the property is retired.

SECA net revenue subject to refund represents our 
deferral of revenues and costs that were billed to 
PJM transmission customers and paid to transmission 
owners during 2005 and 2006, but which remain 
subject to litigation before the FERC and potential 
reversal. DP&L is both a transmission customer and 
a transmission owner. SECA revenue and expenses 
represent FERC-ordered transitional payments for 
the use of transmission lines within PJM. We began 
receiving and paying these transitional payments 
in May 2005, subject to refund. Since 2005, a large 
number of settlements have been entered into among 
various market participants including DP&L. A final 
FERC order on this issue was issued on May 21, 
2010 that substantially supports DP&L’s and other 
utilities’ position that SECA obligations should be 
paid by parties that used the transmission system 
during the timeframe stated above. DP&L, along with 

DPL Inc.  83

other transmission owners in PJM and the Midwest 
Independent System Operator (MISO) made a 
compliance filing at FERC on August 19, 2010 that 
fully demonstrated all payment obligations to and from 
all parties within PJM and the MISO. The FERC has 
made no ruling regarding the compliance filing and 
some parties have requested rehearing by FERC of 
its May 21, 2010 order. It is expected that any order 
on the compliance filing and any order regarding the 
rehearing request will be appealed for Court review. In 
October 2010, DP&L entered into another settlement 
agreement to settle a portion of SECA amounts still 
owed to DP&L. With respect to unsettled claims, DP&L 
management believes it has deferred as a regulatory 
liability the appropriate amounts that are subject 
to refund. The eventual outcome of this litigation is 
uncertain.

Postretirement benefits represent the qualifying FASC 
Topic 715 “Compensation – Retirement Benefits” gains 
related to our regulated operations that, for ratemaking 
purposes, are probable of being reflected in future 
rates. We recognize an asset for a plan’s overfunded 
status or a liability for a plan’s underfunded status, and 
recognize, as a component of OCI, the changes in the 
funded status of the plan that arise during the year that 
are not recognized as a component of net periodic 

benefit cost. This regulatory liability represents the 
regulated portion that would otherwise be reflected as 
a gain to OCI.

Fuel and purchased power recovery costs represent 
prudently incurred fuel, purchased power, derivative, 
emission and other related costs which will be 
recovered from or returned to customers in the future 
through the operation of the fuel and purchased 
power recovery rider. The fuel and purchased power 
recovery rider fluctuates based on actual costs and 
recoveries and is modified at the start of each seasonal 
quarter. DP&L implemented the fuel and purchased 
power recovery rider on January 1, 2010. DP&L is 
currently undergoing an audit of its fuel and purchased 
power recovery rider and, as a result, there is some 
uncertainty as to the costs that will be approved for 
recovery. Independent third parties conduct the 
fuel audit in accordance with the PUCO standards. 
DP&L anticipates that some of this uncertainty will be 
resolved during the summer of 2011 after completion 
of the fuel audit. As a result of the fuel audit, DP&L 
may record a favorable or unfavorable adjustment to 
earnings. Based on past PUCO precedent, we believe 
these deferred costs are probable of future recovery or 
repayment in the case of over recovery.

84  DPL Inc.

4 Ownership of Coal-fired Facilities

DP&L and other Ohio utilities have undivided ownership interests in seven coal-fired electric generating facilities and 
numerous transmission facilities. Certain expenses, primarily fuel costs for the generating units, are allocated to the 
owners based on their energy usage. The remaining expenses, investments in fuel inventory, plant materials and 
operating supplies, and capital additions are allocated to the owners in accordance with their respective ownership 
interests. As of December 31, 2010, we had $56 million of construction work in process at such facilities. DP&L’s share 
of the operating cost of such facilities is included within the corresponding line in the Statements of Results of Operations 
and DP&L’s share of the investment in the facilities is included in the Balance Sheets.

DP&L’s undivided ownership interest in such facilities as well as our wholly-owned coal fired Hutchings plant at 

December 31, 2010, is as follows:

Production Units:
Beckjord Unit 6
Conesville Unit 4
East Bend Station
Killen Station
Miami Fort Units 7 and 8
Stuart Station
Zimmer Station

Transmission

(at varying percentages)

Total

DP&L Share

DP&L Investment

Ownership 
(%)

Production  
Capacity 
(MW)

Gross Plant
In Service
($ in millions)

Accumulated
Depreciation
($ in millions)

Construction
Work in 
Process
($ in millions)

SCR and FGD
Equipment
Installed and In
Service (Yes/No)

50.0
16.5
31.0
67.0
36.0
35.0
28.1

210
129
186
402
368
820
365

$

75
118
200
611
347
697
1,059

91

$

52
27
131
288
130
266
612

56

2,480

$ 3,198

$ 1,562

$ 2
5
1
3
7
25
12

–

$ 55

No
Yes
Yes
Yes
Yes
Yes
Yes

Wholly-owned production unit:

Hutchings Station

100.0

388

$

123

$

111

$ 1

No

DP&L’s share of operating costs associated with the jointly-owned generating facilities is included within the 
corresponding line in the Statements of Results of Operations.

DPL Inc.  85

5 Debt Obligations

Long-term Debt

$ in millions

DP&L 
First mortgage bonds maturing in October 2013 - 5.125%
Pollution control series maturing in January 2028 - 4.70% 
Pollution control series maturing in January 2034 - 4.80% 
Pollution control series maturing in September 2036 - 4.80% 
Pollution control series maturing in November 2040 -

variable rates: 0.16% - 0.35% and 0.24% - 0.85% (a)

Obligation for capital lease
Unamortized debt discount 

Total long-term debt – DP&L

DPL 
Senior notes maturing in September 2011 - 6.875%
Note to DPL Capital Trust II maturing in September 2031 - 8.125%
Unamortized debt discount 

Total long-term debt – DPL

Current portion - Long-term Debt

$ in millions

DP&L
Pollution control series maturing in November 2040 -

variable rates: 0.16% - 0.35% and 0.24% - 0.85% (a)

Obligation for capital lease

Total current portion - long-term debt – DP&L

DPL
Senior notes maturing in September 2011 - 6.875%
Total current portion - long-term debt – DPL

At December 31,

2010

470.0
35.3
179.1
100.0

100.0
884.4

0.1
(0.5)
884.0

$

$

–
142.6
–
$ 1,026.6

2009

$ 470.0
35.3
179.1
100.0

–
784.4

–
(0.7)
$ 783.7

297.4
142.6
(0.2)
$ 1,223.5

At December 31,

2010

2009

$

$

$

–
0.1
0.1

297.4
297.5

$ 100.0
0.6
$ 100.6

–
$ 100.6

(a) Range of interest rates for the twelve months ended December 31, 2010 and December 31, 2009, respectively.

At December 31, 2010, maturities of long-term debt, including capital lease obligations, are summarized as follows:

$

DPL
297.5
0.1
470.0
–
–
557.0
$ 1,324.6

$

DP&L
0.1
0.1
470.0
–
–
414.4
$ 884.6

$ in millions
Due within one year 
Due within two years
Due within three years
Due within four years
Due within five years
Thereafter

86  DPL Inc.

Debt

On November 21, 2006, DP&L entered into a $220 
million unsecured revolving credit agreement. This 
agreement has a five-year term that expires on 
November 21, 2011 and provides DP&L with the ability 
to increase the size of the facility by an additional $50 
million at any time. DP&L had no outstanding borrowings 
under this credit facility at December 31, 2010. Fees 
associated with this credit facility were approximately 
$1.2 million and $0.9 million during the years ended 
December 31, 2010 and 2009, respectively. Changes in 
DP&L’s credit ratings may affect fees and the applicable 
interest rate. This revolving credit agreement contains a 
$50 million letter of credit sublimit. As of December 31, 
2010, DP&L had no outstanding letters of credit against 
the facility.

On December 4, 2008, the OAQDA issued 
$100 million of collateralized, variable rate Revenue 
Refunding Bonds Series A and B due November 1, 
2040. In turn, DP&L borrowed these funds from the 
OAQDA and issued corresponding First Mortgage 
Bonds to support repayment of the funds. The payment 
of principal and interest on each series of the bonds 
when due is backed by a standby LOC issued by 
JPMorgan Chase Bank, N.A. This LOC facility, which 
expires in December 2013, is irrevocable and has 
no subjective acceleration clauses. The bonds were 
classified within the current portion of long term debt 
at December 31, 2009 as the standby LOC backing 
the bonds was set to expire during the fourth quarter of 
2010. During the fourth quarter of 2010, DP&L renewed 
the standby LOC to back the payment of principal and 
interest on each series of the bonds when due. The 
new LOC facility expires in December 2013 therefore 
the bonds have been reclassified to Long-term debt on 
the balance sheets of DPL and DP&L.

On March 31, 2009, DPL paid its $175 million 

8.00% Senior notes when the notes became due.
On April 21, 2009, DP&L entered into a $100 
million unsecured revolving credit agreement with 
a syndicated bank group. The agreement was for a 
364-day term and expired on April 20, 2010.

On December 21, 2009, DPL purchased $52.4 
million principal amount of DPL Capital Trust II 8.125% 
capital securities in a privately negotiated transaction. 
As part of this transaction, DPL paid a $3.7 million, 
or 7%, premium which was recorded within Interest 
expense on the Consolidated Statements of Results 
of Operations.

On April 20, 2010, DP&L entered into a $200 
million unsecured revolving credit agreement with a 
syndicated bank group. This agreement is for a three 
year term expiring on April 20, 2013 and provides 
DP&L with the ability to increase the size of the 
facility by an additional $50 million. DP&L had no 
outstanding borrowings under this credit facility at 
December 31, 2010. Fees associated with this credit 
facility were approximately $0.5 million during the 
period between April 20, 2010 and December 31, 
2010. This facility also contains a $50 million letter of 
credit sublimit. As of December 31, 2010, DP&L had no 
outstanding letters of credit against the facility.

Substantially all property, plant and equipment of 
DP&L is subject to the lien of the mortgage securing 
DP&L’s First and Refunding Mortgage, dated 
October 1, 1935, with the Bank of New York Mellon 
as Trustee.

See Note 18 of Notes to Consolidated Financial 
Statements for additional discussion relating to DPL’s 
8.125% Note to DPL – Capital Trust II.

DPL Inc.  87

6 Income Taxes

For the years ended December 31, 2010, 2009 and 2008, DPL’s components of income tax expense were as follows:

DPL

$ in millions

Computation of Tax Expense
Federal income tax (a)

Increases (decreases) in tax resulting from:
State income taxes, net of federal effect 
Depreciation of AFUDC - Equity
Investment tax credit amortized
Section 199 - domestic production deduction
Accrual (settlement) for open tax years (b)
Other, net (c)

Total tax expense 

Components of Tax Expense
Federal - Current
State and Local - Current
Total Current

Federal - Deferred
State and Local - Deferred
Total Deferred 

Total tax expense

Components of Deferred Tax Assets and Liabilities

$ in millions

Net Noncurrent Assets / (Liabilities)

Depreciation / property basis
Income taxes recoverable
Regulatory assets
Investment tax credit
Investment loss
Compensation and employee benefits
Insurance 
Other (d)

Net noncurrent (liabilities)

Net Current Assets (e)

Other

Net current assets

For the years ended December 31,

2010

2009

2008

$

151.7

$

119.9

$

121.9

2.4
(2.2)
(2.8)
(9.1)
0.2
2.8
143.0

84.8
1.1
85.9

55.9
1.2
57.1

143.0

$

$

$

$

$

$

0.9
(2.0)
(2.8)
(4.6)
(1.4)
2.5
112.5

(84.4)
(1.8)
(86.2)

196.0
2.7
198.7

112.5

$

$

$

$

$

$

4.1
(4.3)
(2.8)
(4.2)
(7.2)
(4.6)
102.9

60.9
1.8
62.7

37.9
2.3
40.2

102.9

$

$

$

$

$

$

At December 31,

2010

2009

$ (618.6)
(10.3)
(12.4)
11.3
(0.5)
21.0
(1.5)
(14.4)
$ (625.4)

$ (583.5)
(12.9)
(16.5)
12.3
0.1
35.8
0.8
(5.2)
$ (569.1)

$
$

1.1
1.1

$
$

3.7
3.7

(a) The statutory tax rate of 35% was applied to pre-tax earnings from continuing operations.

(b) DPL has recorded an expense of $0.2 million, benefits of $2.9 million and $40.7 million in 2010, 2009 and 2008, respectively, for tax deduction or 
income positions taken in prior tax returns that we believe were properly treated on such tax returns but for which it is possible that these positions may be 
contested. The 2008 amount relates to the ODT settlement discussed further below in Note 6 of Notes to Consolidated Financial Statements.

(c) Includes a benefit of $0.3 million, an expense of $2.0 million, a benefit of $3.8 million in 2010, 2009 and 2008, respectively, of income tax related to 
adjustments from prior years.

(d) The Other noncurrent liabilities caption includes deferred tax assets of $13.1 million in 2010 and $12.0 million in 2009 related to state and local tax net 
operating loss carryforwards, net of related valuation allowances of $13.1 million in 2010 and $12.0 million in 2009. As of December 31, 2010 and 2009, all 
deferred tax assets related to net operating losses were valued at zero. These net operating loss carryforwards expire from 2017 to 2025.

(e) Amounts are included within Other prepayments and current assets on the Consolidated Balance Sheets of DPL.

88  DPL Inc.

DPL has recorded $0.2 million, $0.7 million and $0.3 million in 2010, 2009 and 2008, respectively, for tax benefits 
related to stock-based compensation that were credited to Retained earnings. DPL has recorded $5.8 million of tax 
expense in 2010 and $1.7 million and $11.5 million of tax benefits in 2009 and 2008, respectively, for tax benefits 
related to pensions, postretirement benefits, cash flow hedges and financial instruments that were credited to 
Accumulated other comprehensive loss.

For the years ended December 31, 2010, 2009 and 2008, DP&L’s components of income tax were as follows:

DP&L

$ in millions

Computation of Tax Expense
Federal income tax (a)

Increases (decreases) in tax resulting from:
State income taxes, net of federal effect 
Depreciation of AFUDC - Equity
Investment tax credit amortized
Section 199 - domestic production deduction
Accrual (settlement) for open tax years (b)
Other, net (c)

Total tax expense 

Components of Tax Expense
Federal - Current
State and Local - Current
Total Current

Federal - Deferred
State and Local - Deferred
Total Deferred 

Total tax expense

Components of Deferred Tax Assets and Liabilities

$ in millions

Net Noncurrent Assets / (Liabilities)

Depreciation / property basis
Income taxes recoverable
Regulatory assets
Investment tax credit
Compensation and employee benefits
Other

Net noncurrent (liabilities)

Net Current Assets (d)

Other

Net current assets

For the years ended December 31,

2010

2009

2008

$

144.2

$

134.2

$

142.1

1.9
(2.2)
(2.8)
(9.1)
0.2
3.0
135.2

83.1
0.8
83.9

50.1
1.2
51.3

135.2

$

$

$

$

$

$

0.4
(2.0)
(2.8)
(4.6)
(1.4)
0.7
124.5

(70.3)
(2.5)
(72.8)

194.4
2.9
197.3

124.5

$

$

$

$

$

$

2.6
(4.3)
(2.8)
(4.2)
(7.2)
(6.0)
120.2

81.2
0.9
82.1

36.4
1.7
38.1

120.2

$

$

$

$

$

$

At December 31,

2010

2009

$ (595.6)
(10.3)
(12.4)
11.3
21.0
(12.0)
$ (598.0)

$ (563.7)
(12.9)
(16.5)
12.3
35.8
(8.0)
$ (553.0)

$
$

1.2
1.2

$
$

3.7
3.7

(a) The statutory tax rate of 35% was applied to pre-tax earnings. 

(b) DP&L has recorded an expense of $0.2 million and benefits of $2.9 million and $40.7 million in 2010, 2009 and 2008, respectively, of tax provisions 
for tax deduction or income positions taken in prior tax returns that we believe were properly treated on such tax returns but for which it is possible 
that these positions may be contested. The 2008 amount relates to the ODT settlement discussed further below in Note 6 of Notes to Consolidated 
Financial Statements. 

(c) Includes a benefit of $0.3 million, an expense of $0.8 million, and a benefit of $3.5 million in 2010, 2009 and 2008, respectively, of income tax related to 
adjustments from prior years. 

(d) Amounts are included within Other prepayments and current assets on the Balance Sheets of DP&L.

DPL Inc.  89

DP&L has recorded $0.2 million, $0.7 million and 
$0.3 million in 2010, 2009 and 2008, respectively, 
for tax benefits related to stock-based compensation 
that were credited to Other paid-in capital. DP&L has 
recorded $0.1 million of tax expense in 2010 and $0.5 
million and $16.5 million of tax benefits in 2009 and 
2008, respectively, for tax benefits related to pensions, 
postretirement benefits, cash flow hedges and financial 
instruments that were credited to Accumulated other 
comprehensive loss.

Accounting for Uncertainty in Income Taxes

We apply the provisions of GAAP relating to the 
accounting for uncertainty in income taxes. A 
reconciliation of the beginning and ending amount 
of unrecognized tax benefits for DPL and DP&L is 
as follows:

$ in millions 

Balance at beginning of year
Tax positions taken during prior 

periods

Tax positions taken during current 

period

Settlement with taxing authorities
Lapse of applicable statute of 

limitations

Balance at end of year

2010

2009

$ 19.3

$ 1.9

(0.4)

–
0.3

–

20.6 
(3.2)

0.2
$ 19.4

–
$ 19.3

Of the December 31, 2010 balance of unrecognized tax 
benefits, $20.6 million is due to uncertainty in the timing 
of deductibility offset by $1.1 million of unrecognized 
tax liabilities that would affect the effective tax rate.
We recognize interest and penalties related to 
unrecognized tax benefits in Income tax expense. 
The amount of interest and penalties accrued was an 
expense of $0.3 million as of December 31, 2010, a 
benefit of $0.1 million as of December 31, 2009 and an 
expense of less than $0.1 million as of December 31, 
2008. The amount of interest and penalties recorded in 
the statements of results of operations for 2010, 2009 
and 2008 was an expense of $0.2 million, and benefits of 
$0.1 million and $9.0 million, respectively.

Following is a summary of the tax years open to 
examination by major tax jurisdiction:
U.S. Federal – 2007 and forward
State and Local – 2005 and forward

None of the unrecognized tax benefits are expected 
to significantly increase or decrease within the next 
twelve months.

The Internal Revenue Service began an 
examination of our 2008 Federal income tax return 
during the second quarter of 2010. The examination is 

still ongoing and we do not expect the results of this 
examination to have a material impact on our financial 
condition, results of operations and cash flows.

On December 17, 2010, the Federal Tax Relief, 
Unemployment Insurance Reauthorization, and Job 
Creation Act of 2010 was enacted. This legislation 
amends, creates and extends various Federal tax 
statutes. Among the various statutes is the extension 
and expansion of capital expensing provisions, 
commonly referred to as bonus depreciation, for 
2010, 2011 and 2012. While these provisions are not 
expected to have a material impact on our results of 
operations, we anticipate they will result in positive cash 
flow contributions over the next few years.

On June 21, 2010, Ohio Senate Bill 232 was 
enacted. This legislation eliminates Ohio’s tangible 
personal property tax and real property taxes on 
generation for renewable and advanced energy 
project facilities that begin construction before 
January 1, 2012, produce energy by 2013 (or 2017 for 
nuclear, clean coal and cogeneration projects) and 
create Ohio jobs. Rules containing implementation 
provisions were proposed on September 29, 2010. We 
do not anticipate this law and the related rules will have 
a material impact on either DPL’s or DP&L’s financial 
condition, results of operations and cash flows.

On February 13, 2006, we received 

correspondence from the ODT notifying us that the 
ODT had completed their examination and review of our 
Ohio Corporation Franchise Tax Returns for tax years 
2002 through 2004 and that the final proposed audit 
adjustments resulted in a balance due of $90.8 million 
before interest and penalties. On June 27, 2008, we 
entered into a $42.0 million settlement agreement 
with the ODT resolving all outstanding audit issues 
and appeals, including uncertain tax positions for tax 
years 1998 through 2006. The $42 million payment was 
made to the ODT in July 2008. Due to this settlement 
agreement, the balance of our unrecognized state 
tax liabilities recorded at December 31, 2007, in the 
amount of $56.3 million, was reversed resulting in a 
recorded income tax benefit of $8.5 million, net of 
federal tax impact, in 2008.

7 Pension and Postretirement Benefits

DP&L sponsors a defined benefit pension plan for 
substantially all employees. For collective bargaining 
employees, the defined benefits are based on a 
specific dollar amount per year of service. For all 
other employees (management employees), the 

90  DPL Inc.

defined benefit pension plan is based primarily 
on compensation and years of service. As of 
December 31, 2010, this pension plan was closed to 
new management employees. A participant is 100% 
vested in all amounts credited to his or her account 
upon the completion of five vesting years, as defined 
in The Dayton Power and Light Company Retirement 
Income Plan, or upon a change of control or the 
participant’s death or disability. If a participant’s 
employment is terminated, other than by death or 
disability, prior to such participant becoming 100% 
vested in his or her account, the account shall be 
forfeited as of the date of termination.

Management employees beginning employment 
on or after January 1, 2011 will be enrolled in a cash 
balance plan. Similar to the defined benefit pension 
plan for management employees, the cash balance 
benefits are based on compensation and years of 
service. A participant shall become 100% vested in 
all amounts credited to his or her account upon the 
completion of three vesting years, as defined in The 
Dayton Power and Light Company Retirement Income 
Plan or upon a change of control or the participant’s 
death or disability. If a participant’s employment is 
terminated, other than by death or disability, prior to 
such participant becoming 100% vested in his or her 
account, the account shall be forfeited as of the date of 
termination. Vested benefits in the cash balance plan 
are fully portable upon termination of employment.

In addition, we have a Supplemental Executive 

Retirement Plan (SERP) for certain active and retired 
key executives. Benefits under this SERP have been 
frozen and no additional benefits can be earned. The 
SERP was replaced by the DPL Inc. Supplemental 
Executive Defined Contribution Retirement Plan 
(SEDCRP). The Compensation Committee of the 
Board of Directors designates the eligible employees. 
Pursuant to the SEDCRP, we provide a supplemental 
retirement benefit to participants by crediting an 
account established for each participant in accordance 
with the Plan requirements. We designate as 
hypothetical investment funds under the SEDCRP 
one or more of the investment funds provided under 
The Dayton Power and Light Company Employee 
Savings Plan. Each participant may change his or her 
hypothetical investment fund selection at specified 
times. If a participant does not elect a hypothetical 
investment fund(s), then we select the hypothetical 
investment fund(s) for such participant. We also 
have an unfunded liability related to agreements for 

retirement benefits of certain terminated and retired 
key executives. The unfunded liabilities for these 
agreements and the SEDCRP were $ 1.8 million 
and $1.4 million at December 31, 2010 and 2009, 
respectively.

We generally fund pension plan benefits as 
accrued in accordance with the minimum funding 
requirements of the Employee Retirement Income 
Security Act of 1974 (ERISA) and, in addition, make 
voluntary contributions from time to time. In February 
2010, DP&L contributed $20.0 million to the defined 
benefit plan. In September 2010, DP&L contributed an 
additional $20.0 million to the defined benefit plan for a 
total contribution of $40.0 million in 2010.

Qualified employees who retired prior to 1987 
and their dependents are eligible for health care and 
life insurance benefits until their death, while qualified 
employees who retired after 1987 are eligible for life 
insurance benefits and partially subsidized health care. 
The partially subsidized health care is at the election 
of the employee, who pays the majority of the cost, 
and is available only from their retirement until they are 
covered by Medicare at age 65. We have funded a 
portion of the union-eligible benefits using a Voluntary 
Employee Beneficiary Association Trust.

Regulatory assets and liabilities are recorded for 

the portion of the under- or over-funded obligations 
related to the transmission and distribution areas of our 
electric business and for the changes in the funded 
status of the plan that arise during the year that are 
not recognized as a component of net periodic benefit 
cost. These regulatory assets and liabilities represent 
the regulated portion that would otherwise be charged 
or credited to AOCI. We have historically recorded 
these costs on the accrual basis and this is how these 
costs have been historically recovered. This factor, 
combined with the historical precedents from the 
PUCO and FERC, make these costs probable of future 
rate recovery.

The following tables set forth our pension and 

postretirement benefit plans’ obligations and assets 
recorded on the balance sheets as of December 31, 
2010 and 2009. The amounts presented in the following 
tables for pension include both the defined benefit 
pension plan and the SERP in the aggregate, and use 
a measurement date of December 31, 2010 and 2009. 
The amounts presented for postretirement include 
both health and life insurance benefits and use a 
measurement date of December 31, 2010 and 2009.

DPL Inc.  91

$ in millions

Change in Benefit Obligation During Year
Benefit obligation at January 1
Service cost
Interest cost
Plan amendments
Actuarial (gain) / loss
Benefits paid
Medicare Part D Reimbursement
Benefit obligation at December 31

Change in Plan Assets During Year

Fair value of plan assets at January 1
Actual return / (loss) on plan assets
Contributions to plan assets
Benefits paid
Medicare reimbursements
Fair value of plan assets at December 31

Pension

Postretirement

2010

2009

2010

2009

$ 323.9
4.8
17.7
–
8.0
(20.6)
–
$ 333.8

$ 243.4
28.6
40.4
(20.6)
–
$ 291.8

$ 294.6
3.6
18.1
7.2
20.3
(19.9)
–
$ 323.9

$ 225.4
37.5
0.4
(19.9)
–
$ 243.4

$ 26.2
0.1
1.2
–
(2.0)
(2.0)
0.2
$ 23.7

$

$

5.0
0.3
1.5
(2.0)
–
4.8

$ 25.2
–
1.5
1.1
0.3
(1.9)
–
$ 26.2

$

$

6.2
0.4
0.3
(2.3)
0.4
5.0

Funded Status of Plan

$ (42.0)

$ (80.5)

$ (18.9)

$ (21.2)

Amounts Recognized in the  
Balance Sheets at December 31 

Current liabilities
Noncurrent liabilities
Net asset / (liability) at December 31

Amounts Recognized in Accumulated Other 
Comprehensive Income, Regulatory Assets and 
Regulatory Liabilities, pre-tax

Components:
Prior service cost / (credit)
Net actuarial loss / (gain)
Accumulated other comprehensive income, regulatory 

$

(0.4)
(41.6)
$ (42.0)

$

(0.4)
(80.1)
$ (80.5)

$ (0.6)
(18.3)
$ (18.9)

$ (0.4)
(20.8)
$ (21.2)

$

16.8
125.4

$

20.4
130.9

$

0.9
(7.6)

$

1.1
(6.9)

assets and regulatory liabilities, pre-tax

$ 142.2

$ 151.3

$ (6.7)

$ (5.8)

Recorded as:
Regulatory asset
Regulatory liability
Accumulated other comprehensive income
Accumulated other comprehensive income, regulatory 

$

80.0
–
62.2

$

84.6
–
66.7

$

0.5
(6.1)
(1.1)

$

0.6
(5.1)
(1.3)

assets and regulatory liabilities, pre-tax

$ 142.2

$ 151.3

$ (6.7)

$ (5.8)

The accumulated benefit obligation for our defined benefit pension plans was $320.9 million and $314.0 million at 
December 31, 2010 and 2009, respectively.

92  DPL Inc.

The net periodic benefit cost (income) of the pension and postretirement benefit plans at December 31 were:

Net Periodic Benefit Cost / (Income)

$ in millions
Service cost
Interest cost
Expected return on assets (a)
Amortization of unrecognized:

Actuarial (gain) loss
Prior service cost

Net periodic benefit cost / (income) 

$

2010
4.8
17.7
(22.4)

$

Pension

2009
3.6
18.1
(22.5)

$

2008
3.2
16.7
(24.1)

7.2
3.7

4.4
3.4

2.6
2.4

$

2010
0.1
1.2
(0.3)

(1.1)
0.1

Postretirement

$

2009
–
1.5
(0.4)

(0.7)
0.1

$

2008
–
1.4
(0.4)

(0.9)
–

before adjustments

$

11.0

$

7.0

$

0.8

$

–

$

0.5

$

0.1

(a) For purposes of calculating the expected return on pension plan assets, under GAAP, the market-related value of assets (MRVA) is used. GAAP requires 
that the difference between actual plan asset returns and estimated plan asset returns be amortized into the MRVA equally over a period not to exceed five 
years. We use a methodology under which we include the difference between actual and estimated asset returns in the MRVA equally over a three year 
period. The MRVA used in the calculation of expected return on pension plan assets was approximately $274 million in 2010, $275 million in 2009 and 
$293 million in 2008.

Other Changes in Plan Assets and Benefit Obligation Recognized in 
Accumulated Other Comprehensive Income, Regulatory Assets and Regulatory Liabilities

$ in millions
Net actuarial (gain) / loss
Prior service cost / (credit)
Reversal of amortization item:
Net actuarial (gain) / loss
Prior service cost / (credit)
Transition (asset) / obligation

Total recognized in Accumulated other comprehensive 
income, Regulatory assets and Regulatory liabilities

Total recognized in net periodic benefit cost and 
Accumulated other comprehensive income, 
Regulatory assets and Regulatory liabilities

Pension

Postretirement

$

2010
1.9
–

(7.2)
(3.7)
–

$

2009
5.3
7.2

2010
$ (1.9)
–

(4.4)
(3.4)
–

1.1
(0.1)
–

$

(9.0)

$

4.7

$ (0.9)

$

2.0

$ 11.7

$ (0.9)

2009
0.3
1.1

0.7
(0.1)
–

2.0

2.5

$

$

$

Estimated amounts that will be amortized from Accumulated other comprehensive income, Regulatory assets and 
Regulatory liabilities into net periodic benefit costs during 2011 are:

$ in millions

Net actuarial (gain) / loss
Prior service cost / (credit)

Pension

$

9.1
2.2

Postretirement

$

0.1
(0.9)

Our expected return on plan asset assumptions, used to determine benefit obligations, are based on historical 
long-term rates of return on investments, which use the widely accepted capital market principle that assets 
with higher volatility generate a greater return over the long run. Current market factors, such as inflation and 
interest rates, as well as asset diversification and portfolio rebalancing, are evaluated when long-term capital 
market assumptions are determined. Peer data and historical returns are reviewed to verify reasonableness 
and appropriateness.

For 2011, we have decreased our expected long-term rate of return on assets assumption from 8.50% to 
8.00% for pension plan assets. We are maintaining our expected long-term rate of return on assets assumption at 
approximately 6.00% for postretirement benefit plan assets. These expected returns are based primarily on portfolio 
investment allocation. There can be no assurance of our ability to generate these rates of return in the future.

DPL Inc.  93

Our overall discount rate was evaluated in relation to the December 31, 2010 Hewitt Top Quartile Yield Curve which 
represents a portfolio of top-quartile AA-rated bonds used to settle pension obligations. Peer data and historical 
returns were also reviewed to verify the reasonableness and appropriateness of our discount rate used in the 
calculation of benefit obligations and expense.

The weighted average assumptions used to determine benefit obligations for the years ended December 31, 

2010 and 2009 were:

Benefit Obligation Assumptions

Discount rate for obligations
Rate of compensation increases

Pension

Postretirement

2010

5.31%
3.94%

2009

5.75%
4.44%

2010

4.96%
N/A

2009

5.35%
N/A

The weighted-average assumptions used to determine net periodic benefit cost (income) for the years ended 
December 31, 2010, 2009 and 2008 were:

Net Periodic Benefit Cost / (Income) Assumptions

Discount rate
Expected rate of return on plan assets
Rate of compensation increases

2010

5.75%
8.50%
4.44%

Pension

2009

6.25%
8.50%
5.44%

2008

6.00%
8.50%
5.44%

2010

5.35%
6.00%
N/A

Postretirement

2009

6.25%
6.00%
N/A

2008

6.00%
6.00%
N/A

The assumed health care cost trend rates at December 31, 2010 and 2009 are as follows:

Health Care Cost Assumptions

Pre-age 65
Current health care cost trend rate
Year trend reaches ultimate

Post-age 65
Current health care cost trend rate
Year trend reaches ultimate

Ultimate health care cost trend rate

Expense

Benefit Obligations

2010

2009

2010

2009

9.50%
2015

9.00%
2014

5.00%

9.50%
2014

9.00%
2013

5.00%

8.50%
2018

8.00%
2017

5.00%

9.50%
2015

9.00%
2014

5.00%

94  DPL Inc.

The assumed health care cost trend rates have an 
effect on the amounts reported for the health care 
plans. A one-percentage point change in assumed 
health care cost trend rates would have the following 
effects on the net periodic postretirement benefit cost 
and the accumulated postretirement benefit obligation:

Effect of Change in Health Care Cost Trend Rate

$ in millions 

One-percent 
increase

One-percent 
decrease

Service cost plus interest cost
Benefit obligation

$
–
$ 0.9

$
–
$ (0.8)

The following benefit payments, which reflect future 
service, are expected to be paid as follows:

Estimated Future Benefit Payments and 
Medicare Part D Reimbursements

$ in millions 

2011
2012
2013
2014
2015
2016 - 2020

Pension

Postretirement

21.3
$
23.1
$
23.1
$
23.6
$
$
24.0
$ 122.9

$ 2.5
$ 2.4
$ 2.4
$ 2.3
$ 2.1
$ 8.8

We expect to make contributions of $0.4 million to our 
SERP in 2011 to cover benefit payments. Additionally, 
we are considering making discretionary contributions 
of up to $40.0 million to our defined benefit pension 
plan during 2011. We also expect to contribute 
$2.5 million to our other postretirement benefit plans in 
2011 to cover benefit payments.

The Pension Protection Act (the Act) of 2006 
contained new requirements for our single employer 
defined benefit pension plan. In addition to establishing 
a 100% funding target for plan years beginning after 
December 31, 2008, the Act also limits some benefits if 
the funded status of pension plans drops below certain 
thresholds. Among other restrictions under the Act, if 
the funded status of a plan falls below a predetermined 
ratio of 80%, lump-sum payments to new retirees are 
limited to 50% of amounts that otherwise would have 
been paid and new benefit improvements may not go 

into effect. For the 2010 plan year, the funded status 
of our defined benefit pension plan as calculated 
under the requirements of the Act was 99.4% and is 
estimated to be 99.4% until the 2011 status is certified 
in September 2011 for the 2011 plan year. The Worker, 
Retiree, and Employer Recovery Act of 2008 (WRERA), 
which was signed into law on December 23, 2008, 
grants plan sponsors certain relief from funding 
requirements and benefit restrictions of the Act.

Plan Assets

Plan assets are invested using a total return investment 
approach whereby a mix of equity securities, 
debt securities and other investments are used to 
preserve asset values, diversify risk and achieve 
our target investment return benchmark. Investment 
strategies and asset allocations are based on careful 
consideration of plan liabilities, the plan’s funded status 
and our financial condition. Investment performance 
and asset allocation are measured and monitored on 
an ongoing basis.

Plan assets are managed in a balanced portfolio 

comprised of two major components: an equity portion 
and a fixed income portion. The expected role of Plan 
equity investments is to maximize the long-term real 
growth of Plan assets, while the role of fixed income 
investments is to generate current income, provide 
for more stable periodic returns and provide some 
protection against a prolonged decline in the market 
value of Plan equity investments.

Long-term strategic asset allocation guidelines 

are determined by management and take into 
account the Plan’s long-term objectives as well as 
its short-term constraints. The target allocations for 
plan assets are 30-80% for equity securities, 30-
65% for fixed income securities, 0-10% for cash and 
0-25% for alternative investments. Equity securities 
include U.S. and international equity, while fixed 
income securities include long-duration and high-yield 
bond funds and emerging market debt funds. Other 
types of investments include investments in hedge 
funds and private equity funds that follow several 
different strategies.

DPL Inc.  95

The fair values of our pension plan assets at December 31, 2010 by asset category are as follows:

Fair Value Measurements for Pension Plan Assets at December 31, 2010

Asset Category

$ in millions

Equity Securities (a)
Small/Mid Cap Equity
Large Cap Equity
DPL Inc. Common Stock
International Equity 

Total Equity Securities

Debt Securities (b)
Emerging Markets Debt
Fixed Income
High Yield Bond
Long Duration Fund

Total Debt Securities

Cash and Cash Equivalents (c)
Cash 

Other Investments (d)
Limited Partnership Interest
Common Collective Fund

Total Other Investments

Market Value 
at 12/31/10

Quoted Prices in  
Active Markets for 
Identical Assets

Significant 
Observable 
Inputs 

Significant 
Unobservable 
Inputs

(Level 1)

(Level 2)

(Level 3)

$

15.2
49.4
23.8
31.5
$ 119.9

$

5.2
39.0
8.2
58.9
$ 111.3

$

–
–
23.8
–
$ 23.8

$

$

–
–
–
–
–

$

$

$

0.4

$

0.4

2.8
57.4
60.2

$

$

–
–
–

$

$

15.2
49.4
–
31.5
96.1

$

5.2
39.0
8.2
58.9
$ 111.3

$

$

$

–

–
–
–

$

$

$

$

$

–
–
–
–
–

–

–
–
–

–

$ 2.8
57.4
$ 60.2

$ 60.2

Total Pension Plan Assets

$ 291.8

$ 24.2

$ 207.4

(a) This category includes investments in equity securities of large, small and medium sized companies and equity securities of foreign companies including 
those in developing countries. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is 
used to value the fund except for the DPL common stock which is valued using the closing price on the New York Stock Exchange.

(b) This category includes investments in investment-grade fixed-income instruments, U.S. dollar-denominated debt securities of emerging market issuers 
and high yield fixed-income securities that are rated below investment grade. The funds are valued using the net asset value method in which an average of 
the market prices for the underlying investments is used to value the fund.

(c) This category comprises cash held to pay beneficiaries. The fair value of cash equals its book value.

(d) This category represents a private equity fund that specializes in management buyouts and a hedge fund of funds made up of 30+ different hedge 
fund managers diversified over eight different hedge strategies. The fair value of the private equity fund is determined by the General Partner based on the 
performance of the individual companies. The fair value of the hedge fund is valued using the net asset value method in which an average of the market 
prices for the underlying investments is used to value the fund.

96  DPL Inc.

The fair values of our pension plan assets at December 31, 2009 by asset category are as follows:

Fair Value Measurements for Pension Plan Assets at December 31, 2009

Asset Category

$ in millions

Equity Securities (a)
Small/Mid Cap Equity
Large Cap Equity
DPL Inc. Common Stock
International Equity 

Total Equity Securities

Debt Securities (b)
Emerging Markets Debt
High Yield Bond
Long Duration Fund

Total Debt Securities

Cash and Cash Equivalents (c)
Cash 

Other Investments (d)
Limited Partnership Interest
Common Collective Fund

Total Other Investments

Total Pension Plan Assets

Market Value 
at 12/31/09

Quoted Prices in  
Active Markets for 
Identical Assets

Significant 
Observable 
Inputs 

Significant 
Unobservable 
Inputs

(Level 1)

(Level 2)

(Level 3)

$

$

4.5
35.9
25.5
19.2
85.1

$

12.9
13.8
77.4
$ 104.1

$

–
–
25.5
–
$ 25.5

$

$

–
–
–
–

$

$

$

0.5

$

0.5

3.1
50.6
53.7

$

$

–
–
–

$

$

4.5
35.9
–
19.2
59.6

$

12.9
13.8
77.4
$ 104.1

$

$

$

–

–
–
–

$ 243.4

$ 26.0

$ 163.7

$

$

$

$

$

–
–
–
–
–

–
–
–
–

–

$ 3.1
50.6
$ 53.7

$ 53.7

(a) This category includes investments in equity securities of large, small and medium sized companies and equity securities of foreign companies including 
those in developing countries. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is 
used to value the fund except for the DPL common stock which is valued using the closing price on the New York Stock Exchange.

(b) This category includes investments in investment-grade fixed-income instruments, U.S. dollar-denominated debt securities of emerging market issuers 
and high yield fixed-income securities that are rated below investment grade. The funds are valued using the net asset value method in which an average of 
the market prices for the underlying investments is used to value the fund.

(c) This category comprises cash held to pay beneficiaries. The fair value of cash equals its book value.

(d) This category represents a private equity fund that specializes in management buyouts and a hedge fund of funds made up of 30+ different hedge 
fund managers diversified over eight different hedge strategies. The fair value of the private equity fund is determined by the General Partner based on the 
performance of the individual companies. The fair value of the hedge fund is valued using the net asset value method in which an average of the market 
prices for the underlying investments is used to value the fund.

DPL Inc.  97

The change in the fair value for the pension assets valued using significant unobservable inputs (Level 3) was 
due to the following:

Fair Value Measurements of Pension Assets Using Significant Unobservable Inputs (Level 3)

$ in millions

Beginning balance at December 31, 2008

Actual return on plan assets:

Relating to assets still held at the reporting date
Relating to assets sold during the period

Purchases, sales, and settlements
Transfers in and / or out of Level 3

Ending balance at December 31, 2009

Actual return on plan assets:

Relating to assets still held at the reporting date
Relating to assets sold during the period

Purchases, sales, and settlements
Transfers in and / or out of Level 3

Ending balance at December 31, 2010

Limited 
Partnership Interest

Common 
Collective Fund

$ 3.1

$ 33.1

0.1
–
(0.1)
–

1.3
–
16.2
–

$ 3.1

$ 50.6

$ 0.1
–
(0.4)
–

$ 2.8

$ 0.8
–
6.0
–

$ 57.4

The fair values of our other postretirement benefit plan assets at December 31, 2010 by asset category are 
as follows:

Fair Value Measurements for Postretirement Plan Assets at December 31, 2010

Asset Category

$ in millions

Market Value 
at 12/31/10

Quoted Prices in 
Active Markets for 
Identical Assets

Significant 
Observable 
Inputs 

Significant 
Unobservable 
Inputs

(Level 1)

(Level 2)

(Level 3)

JP Morgan Core Bond Fund (a)

$ 4.8 

$ – 

$ 4.8 

$ – 

(a) This category includes investments in U.S. government obligations and mortgage-backed and asset-backed securities. The funds are valued using the 
net asset value method in which an average of the market prices for the underlying investments is used to value the fund.

The fair values of our other postretirement benefit plan assets at December 31, 2009 by asset category are 
as follows:

Fair Value Measurements for Postretirement Plan Assets at December 31, 2009 

Asset Category

$ in millions

Market Value 
at 12/31/09

Quoted Prices in 
Active Markets for 
Identical Assets

Significant 
Observable 
Inputs 

Significant 
Unobservable 
Inputs

(Level 1)

(Level 2)

(Level 3)

JP Morgan Core Bond Fund (a)

$ 5.0 

$ – 

$ 5.0 

$ – 

(a) This category includes investments in U.S. government obligations and mortgage-backed and asset-backed securities. The funds are valued using the 
net asset value method in which an average of the market prices for the underlying investments is used to value the fund.

98  DPL Inc.

8 Fair Value Measurements

The fair values of our financial instruments are based on published sources for pricing when possible. We rely on 
valuation models only when no other method is available to us. The fair value of our financial instruments represents 
estimates of possible value that may or may not be realized in the future. The table below presents the fair value and 
cost of our non-derivative instruments at December 31, 2010 and 2009. See also Note 9 of Notes to Consolidated 
Financial Statements for the fair values of our derivative instruments.

$ in millions

DPL 

Assets

Money Market Funds
Equity Securities
Debt Securities
Multi-Strategy Fund

Total Master Trust Assets

Short-term Investments - VRDNs
Short-term Investments - Bonds

Total Short-term Investments

Total Assets

Liabilities
Debt

DP&L

Assets

Money Market Funds
Equity Securities (a)
Debt Securities
Multi-Strategy Fund

Total Master Trust Assets

Liabilities
Debt

At December 31, 2010

At December 31, 2009

Cost

Fair Value

Cost

Fair Value

$

$

$

$

$

1.6
3.8
5.2
0.3

10.9

54.2
15.1

69.3

80.2

$

$

$

$

$

1.6
4.4
5.5
0.3

11.8

54.2
15.1

69.3

81.1

$

$

$

$

$

4.1
2.6
5.3
0.3

12.3

–
–

–

12.3

$

$

$

$

$

4.1
2.8
5.5
0.2

12.6

–
–

–

12.6

$ 1,324.1

$ 1,307.5

$ 1,324.1

$ 1,317.6

$

$

$

1.6
17.5
5.2
0.3

24.6

884.1

$

$

$

1.6
30.2
5.5
0.3

37.6

850.6

$

$

$

4.1
16.7
5.3
0.3

26.4

$

$

4.1
31.1
5.5
0.2

40.9

884.3

$ 844.5

(a) DPL stock held in the DP&L Master Trust is eliminated in consolidation.

Debt

The fair value of debt is based on current public market prices for disclosure purposes only. Unrealized gains 
or losses are not recognized in the financial statements as debt is presented at amortized cost in the financial 
statements. The debt amounts include the current portion payable in the next twelve months and have maturities 
that range from 2011 to 2040.

Master Trust Assets

DP&L established a Master Trust to hold assets for the benefit of employees participating in employee benefit plans 
and these assets are not used for general operating purposes. These assets are primarily comprised of open-ended 
mutual funds and DPL common stock. The DPL common stock held by the DP&L Master Trust is eliminated in 
consolidation and is not reflected in DPL’s Consolidated Balance Sheets. The DPL common stock is valued using 
current public market prices, while the open-ended mutual funds are valued using the net asset value per unit. 
These investments are recorded at fair value within Other assets on the balance sheets and classified as available 
for sale. Any unrealized gains or losses are recorded in AOCI until the securities are sold.

DPL had $0.9 million ($0.6 million after tax) in unrealized gains and immaterial unrealized losses on the 
Master Trust assets in AOCI at December 31, 2010 and $0.3 million ($0.2 million after tax) in unrealized gains and 
immaterial unrealized losses in AOCI at December 31, 2009.

DPL Inc.  99

DP&L had $13.0 million ($8.5 million after tax) in unrealized gains and immaterial unrealized losses on the 
Master Trust assets in AOCI at December 31, 2010 and $14.5 million ($9.5 million after tax) in unrealized gains and 
immaterial unrealized losses in AOCI at December 31, 2009.

Approximately $1.0 million in unrealized gains are expected to be transferred to earnings in the next twelve 

months.

Short-term Investments

DPL utilizes VRDNs as part of its short-term investment strategy. The VRDNs are of high credit quality and are 
secured by irrevocable letters of credit from major financial institutions. VRDN investments have variable rates tied 
to short-term interest rates. Interest rates are reset every seven days and these VRDNs can be tendered for sale 
upon notice back to the financial institution. Although DPL’s VRDN investments have original maturities over one 
year, they are frequently re-priced and trade at par. We account for these VRDNs as available-for-sale securities 
and record them as short-term investments at fair value, which approximates cost, since they are highly liquid and 
are readily available to support DPL’s current operating needs.

DPL also holds investment-grade fixed income corporate bonds that are classified as held-to-maturity. Held-

to-maturity securities are those securities that we have the intent and ability to hold until maturity. The held-to-
maturity securities are carried at amortized cost which is determined based on specific identification. The bonds are 
classified as short-term since they will mature within the next twelve months.

Net Asset Value (NAV) per Unit

The following table discloses the fair value and redemption frequency for those assets whose fair value is estimated 
using the NAV per unit as of December 31, 2010. These assets are part of the Master Trust and exclude DPL 
common stock which is valued using quoted market prices and not the NAV per unit. Fair values estimated using 
the NAV per unit are considered Level 2 inputs within the fair value hierarchy, unless they cannot be redeemed at 
the NAV per unit on the reporting date. Investments that have restrictions on the redemption of the investments are 
Level 3 inputs. As of December 31, 2010, DPL did not have any investments for sale at a price different from the 
NAV per unit.

Fair Value Estimated Using Net Asset Value per Unit 

$ in millions 

Money Market Fund (a) 
Equity Securities (b) 
Debt Securities (c) 
Multi-Strategy Fund (d) 

Total 

Fair Value 
at December 31, 
2010

Unfunded 
Commitments

Redemption 
Frequency 

Redemption 
Notice Period 

$ 1.6
4.4
5.5
0.3 

$ 11.8 

$ –
–
–
–

$ –

Immediate
Immediate
Immediate
Immediate

None 
None 
None 
None 

(a) This category includes investments in high-quality, short-term securities. Investments in this category can be redeemed immediately at the current net 
asset value per unit. 

(b) This category includes investments in hedge funds representing an S&P 500 index and the Morgan Stanley Capital International (MSCI) U.S. Small Cap 
1750 Index. Investments in this category can be redeemed immediately at the current net asset value per unit.

(c) This category includes investments in U.S. Treasury obligations and U.S. investment grade bonds. Investments in this category can be redeemed 
immediately at the current net asset value per unit.

(d) This category includes investments in stocks, bonds and short-term investments in a mix of actively managed funds. Investments in this category can be 
redeemed immediately at the current net asset value per unit.

100  DPL Inc.

Fair Value Estimated Using Net Asset Value per Unit 

$ in millions 

Money Market Fund (a) 
Equity Securities (b) 
Debt Securities (c) 
Multi-Strategy Fund (d) 

Total 

Fair Value 
at December 31, 
2009

Unfunded 
Commitments 

Redemption 
Frequency 

Redemption 
Notice Period 

$ 4.1
2.8
5.5
0.2

$ 12.6

$ –
–
–
–

$ –

Immediate
Immediate
Immediate
Immediate

None 
None 
None 
None 

(a) This category includes investments in high-quality, short-term securities. Investments in this category can be redeemed immediately at the current net 
asset value per unit. 

(b) This category includes investments in hedge funds representing an S&P 500 index and the Morgan Stanley Capital International (MSCI) U.S. Small Cap 
1750 Index. Investments in this category can be redeemed immediately at the current net asset value per unit.

(c) This category includes investments in U.S. Treasury obligations and U.S. investment grade bonds. Investments in this category can be redeemed 
immediately at the current net asset value per unit.

(d) This category includes investments in stocks, bonds and short-term investments in a mix of actively managed funds. Investments in this category can be 
redeemed immediately at the current net asset value per unit.

Fair Value Hierarchy
Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an 
exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between 
market participants on the measurement date. The fair value hierarchy requires an entity to maximize the use of 
observable inputs and minimize the use of unobservable inputs when measuring fair value. These inputs are then 
categorized as Level 1 (quoted prices in active markets for identical assets or liabilities); Level 2 (observable inputs 
such as quoted prices for similar assets or liabilities or quoted prices in markets that are not active); or Level 3 
(unobservable inputs).

Valuations of assets and liabilities reflect the value of the instrument including the values associated with 
counterparty risk. We include our own credit risk and our counterparty’s credit risk in our calculation of fair value 
using global average default rates based on an annual study conducted by a large rating agency.

DPL Inc.  101

We did not have any transfers of the fair values of our financial instruments between Level 1 and Level 2 of the 

fair value hierarchy during the twelve months ended December 31, 2010 and 2009. The fair value of assets and 
liabilities at December 31, 2010 and 2009 measured on a recurring basis and the respective category within the fair 
value hierarchy for DPL was determined as follows:

Assets and Liabilities Measured at Fair Value on a Recurring Basis

DPL

$ in millions

Assets

Level 1

Level 2

Level 3

Fair Value 
at December 31, 
2010*

Based on 
Quoted Prices in 
Active Markets

Other 
Observable 
Inputs

Unobservable 
Inputs

Collateral and 
Counterparty 
Netting

Fair Value on 
Balance Sheet at 
December 31, 2010

Master Trust Assets

Money Market Funds
Equity Securities
Debt Securities
Multi-Strategy Fund

$

1.6
4.4
5.5
0.3

Total Master Trust Assets

$

11.8

Derivative Assets

FTRs
Heating Oil Futures
Interest Rate Hedge
Forward NYMEX Coal 

Contracts
Forward Power 
Contracts

Total Derivative Assets

Short-term Investments - 

VRDNs

Short-term Investments - 

Bonds

Total Short-term 
investments

Total Assets

Liabilities

Derivative Liabilities

Interest Rate Hedge
Forward Power 
Contracts

Total Derivative Liabilities

Total Liabilities

$

$

$

0.3
1.6
20.7

37.5

0.2

60.3

54.2

15.1

$

69.3

$ 141.4

$

6.6

3.1

9.7

9.7

$

$

* Includes credit valuation adjustments for counterparty risk.

$

$

$

–
–
–
–

–

–
1.6
–

–

–

$ 1.6

$

$

–

–

–

$

1.6
4.4
5.5
0.3

$

11.8

$

$

$

0.3
–
20.7

37.5

0.2

58.7

54.2

15.1

$

69.3

$ 1.6

$ 139.8

$

$

$

–

–

–

–

$

6.6

3.1

9.7

9.7

$

$

$ –
–
–
–

$ –

$ –
–
–

–

–

$

$

$

–
–
–
–

–

–
(1.6)
–

(21.9)

(0.2)

$ –

$ (23.7)

$ –

–

$ –

$ –

$ –

–

$ –

$ –

$

$

–

–

–

$ (23.7)

$

$

$

–

(1.1)

(1.1)

(1.1)

$

1.6
4.4
5.5
0.3

$

11.8

$

$

$

0.3
–
20.7

15.6

–

36.6

54.2

15.1

$

69.3

$ 117.7

$

6.6

2.0

8.6

8.6

$

$

102  DPL Inc.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

DPL

$ in millions

Assets

Master Trust Assets

Money Market Funds
Equity Securities
Debt Securities
Multi-Strategy Fund

Total Master Trust Assets

Derivative Assets

FTRs
Forward NYMEX Coal 

Contracts
Forward Power 
Contracts

Total Derivative Assets

Total Assets

Liabilities

Derivative Liabilities

Heating Oil Futures
Forward Power 
Contracts

Forward NYMEX Coal 

Contracts

Total Derivative Liabilities

Total Liabilities

Level 1

Level 2

Level 3

Fair Value 
at December 31, 
2009*

Based on 
Quoted Prices in 
Active Markets

Other 
Observable 
Inputs

Unobservable 
Inputs

Collateral and 
Counterparty 
Netting

Fair Value on 
Balance Sheet at 
December 31, 2009

$ 4.1
2.8
5.5
0.2

$ 12.6

$ 0.8

5.5

0.7

$ 7.0

$ 19.6

$

$

$

$

$

–
–
–
–

–

–

–

–

–

–

$ 4.1
2.8
5.5
0.2

$ 12.6

$ –
–
–
–

$ –

$ 0.8

$ –

5.5

0.7

$ 7.0

$ 19.6

–

–

$ –

$ –

$

$

$

–
–
–
–

–

–

(1.4)

(0.7)

$ (2.1)

$ (2.1)

$ 4.1
2.8
5.5
0.2

$ 12.6

$ 0.8

4.1

–

$ 4.9

$ 17.5

$ 1.2

$ 1.2

$

–

$ –

$ (1.2)

$

–

3.0

1.2

$ 5.4

$ 5.4

–

–

$ 1.2

$ 1.2

3.0

1.2

$ 4.2

$ 4.2

–

–

$ –

$ –

(0.7)

–

$ (1.9)

$ (1.9)

2.3

1.2

$ 3.5

$ 3.5

* Includes credit valuation adjustments for counterparty risk. 

DPL Inc.  103

The fair value of assets and liabilities at December 31, 2010 and 2009 measured on a recurring basis and the 
respective category within the fair value hierarchy for DP&L was determined as follows:

Assets and Liabilities Measured at Fair Value on a Recurring Basis

DP&L

$ in millions

Assets

Master Trust Assets

Money Market Funds
Equity Securities (a)
Debt Securities
Multi-Strategy Fund

Total Master Trust Assets

Derivative Assets

FTRs
Heating Oil Futures
Forward NYMEX Coal 

Contracts
Forward Power 
Contracts

Total Derivative Assets

Total Assets

Liabilities

Derivative Liabilities

Heating Oil Futures
Forward Power 
Contracts

Forward NYMEX Coal 

Contracts

Total Derivative Liabilities

Total Liabilities

Level 1

Level 2

Level 3

Fair Value 
at December 31, 
2010*

Based on 
Quoted Prices in 
Active Markets

Other 
Observable 
Inputs

Unobservable 
Inputs

Collateral and 
Counterparty 
Netting

Fair Value on 
Balance Sheet at 
December 31, 2010

$ 1.6
30.2
5.5
0.3

$ 37.6

$ 0.3
1.6

37.5

0.2

$ 39.6

$ 77.2

$

–

3.1

–

$ 3.1

$ 3.1

$

–
25.8
–
–

$ 25.8

$ 1.6
4.4
5.5
0.3

$ 11.8

$

–
1.6

$ 0.3
–

–

–

37.5

0.2

$ 1.6

$ 38.0

$ 27.4

$ 49.8

$ –
–
–
–

$ –

$ –
–

–

–

$ –

$ –

$

$

$

–
–
–
–

–

–
(1.6)

(21.9)

(0.2)

$ (23.7)

$ (23.7)

$ 1.6
30.2
5.5
0.3

$ 37.6

$ 0.3
–

15.6

–

$ 15.9

$ 53.5

$

$

$

–

–

–

–

–

$

–

$ –

$

–

$

–

3.1

–

$ 3.1

$ 3.1

–

–

$ –

$ –

(1.1)

–

$ (1.1)

$ (1.1)

2.0

–

$ 2.0

$ 2.0

*Includes credit valuation adjustments for counterparty risk.

(a) DPL stock in the Master Trust is eliminated in consolidation.

104  DPL Inc.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

DP&L

$ in millions

Assets

Master Trust Assets

Money Market Funds
Equity Securities (a)
Debt Securities
Multi-Strategy Fund

Total Master Trust Assets

Derivative Assets

FTRs
Forward NYMEX Coal 

Contracts
Forward Power 
Contracts

Total Derivative Assets

Total Assets

Liabilities

Derivative Liabilities

Heating Oil Futures
Forward Power 
Contracts

Forward NYMEX Coal 

Contracts

Total Derivative Liabilities

Total Liabilities

Level 1

Level 2

Level 3

Fair Value 
at December 31, 
2009*

Based on 
Quoted Prices in 
Active Markets

Other 
Observable 
Inputs

Unobservable 
Inputs

Collateral and 
Counterparty 
Netting

Fair Value on 
Balance Sheet at 
December 31, 2009

$ 4.1
31.1
5.5
0.2

$ 40.9

$ 0.8

5.5

0.7

$ 7.0

$ 47.9

$

–
28.3
–
–

$ 28.3

$

$

–

–

–

–

$ 4.1
2.8
5.5
0.2

$ 12.6

$ –
–
–
–

$ –

$ 0.8

$ –

5.5

0.7

$ 7.0

$ 28.3

$ 19.6

–

–

$ –

$ –

$

$

$

–
–
–
–

–

–

(1.4)

(0.7)

$ (2.1)

$ (2.1)

$ 1.2

$ 1.2

$

–

$ –

$ (1.2)

3.0

1.2

$ 5.4

$ 5.4

–

–

3.0

1.2

$ 1.2

$ 4.2

$ 1.2

$ 4.2

–

–

$ –

$ –

(0.7)

–

$ (1.9)

$ (1.9)

$

4.1
31.1
5.5
0.2

$

40.9

$

0.8

4.1

–

4.9

45.8

–

2.3

1.2

3.5

3.5

$

$

$

$

$

*Includes credit valuation adjustments for counterparty risk.

(a) DPL stock in the Master Trust is eliminated in consolidation.

We use the market approach to value our financial instruments. Level 1 inputs are used for DPL common stock held 
by the Master Trust and for derivative contracts such as heating oil futures and natural gas futures. The fair value is 
determined by reference to quoted market prices and other relevant information generated by market transactions. 
Level 2 inputs are used to value derivatives such as financial transmission rights (where the quoted prices are from 
a relatively inactive market), forward power contracts and forward NYMEX-quality coal contracts (which are traded 
on the OTC market but which are valued using prices on the NYMEX for similar contracts on the OTC market). 
VRDNs and bonds are considered Level 2 because they are priced using recent transactions for similar assets. 
Other Level 2 assets include: open-ended mutual funds that are in the Master Trust, which are valued using the end 
of day NAV per unit, and interest rate hedges, which use observable inputs to populate a pricing model.

Approximately 99% of the inputs to the fair value of our derivative instruments are from quoted market prices.

Non-recurring Fair Value Measurements

We use the cost approach to determine the fair value of our AROs which are estimated by discounting expected cash 
outflows to their present value at the initial recording of the liability. Cash outflows are based on the approximate future 
disposal cost as determined by market information, historical information or other management estimates. These 
inputs to the fair value of the AROs would be considered Level 3 inputs under the fair value hierarchy. There were 
$1.4 million and $2.7 million of gross additions to our existing landfill and asbestos AROs during the twelve months 
ended December 31, 2010 and 2009. In addition, it was determined that a river structure would be retired earlier than 
previously estimated. This resulted in a partial reduction to the ARO liability of $0.8 million in 2010.

DPL Inc.  105

Cash Equivalents

DPL had $29.9 million and $45.3 million in money market funds classified as cash and cash equivalents in its 
Consolidated Balance Sheets at December 31, 2010 and 2009, respectively. The money market funds have quoted 
prices that are generally equivalent to par.

9 Derivative Instruments and Hedging Activities

In the normal course of business, DPL and DP&L enter into various financial instruments, including derivative 
financial instruments. We use derivatives principally to manage the risk of changes in market prices for commodities 
and interest rate risk associated with our long-term debt. The derivatives that we use to economically hedge 
these risks are governed by our risk management policies for forward and futures contracts. Our net positions are 
continually assessed within our structured hedging programs to determine whether new or offsetting transactions 
are required. The objective of the hedging program is to mitigate financial risks while ensuring that we have 
adequate resources to meet our requirements. We monitor and value derivative positions monthly as part of our 
risk management processes. We use published sources for pricing, when possible, to mark positions to market. All 
of our derivative instruments are used for risk management purposes and are designated as cash flow hedges or 
marked to market each reporting period.

At December 31, 2010, DPL and DP&L had the following outstanding derivative instruments:

Commodity

FTRs (1)
Heating Oil Futures (1)
Forward Power Contracts (1)
Forward Power Contracts (1)
NYMEX-quality Coal Contracts* (1)
Interest Rate Swaps (2)

Accounting
Treatment

Mark to Market
Mark to Market
Cash Flow Hedge
Mark to Market
Mark to Market
Cash Flow Hedge

Unit

MWh
Gallons
MWh
MWh
Tons
USD

Purchases
(in thousands)

Sales
(in thousands)

9.0
6,216.0
580.8
195.6
4,006.8
360,000.0

–
–
(572.9)
(108.5)
–
–

*Includes our partners’ share for the jointly-owned plants that DP&L operates.

(1) Reflected in both DPL’s and DP&L’s financial statements

(2) Reflected in only DPL’s financial statements

At December 31, 2009, both DPL and DP&L had the following outstanding derivative instruments:

Commodity

FTRs
Heating Oil Futures
Forward Power Contracts
NYMEX-quality Coal Contracts*

Accounting
Treatment

Mark to Market
Mark to Market
Cash Flow Hedge
Mark to Market

Unit

MWH
Gallons
MWH
Tons

Purchases 
(in thousands)

Sales
(in thousands)

9.3
3,822.0
84.6
3,844.0

–
–
(1,769.2)
(1,286.5)

*Includes our partner’s share for the jointly-owned plants that DP&L operates.

Cash Flow Hedges

Net Purchases/ 
(Sales)
(in thousands)

9.0
6,216.0
7.9
87.1
4,006.8
360,000.0

Net Purchase/ 
(Sale) 
(in thousands)

9.3
3,822.0
(1,684.6)
2,557.5

As part of our risk management processes, we identify the relationships between hedging instruments and hedged 
items, as well as the risk management objective and strategy for undertaking various hedge transactions. The fair 
value of cash flow hedges as determined by current public market prices will continue to fluctuate with changes in 
market prices up to contract expiration. The effective portion of the hedging transaction is recognized in AOCI and 
transferred to earnings using specific identification of each contract when the forecasted hedged transaction takes 
place or when the forecasted hedged transaction is probable of not occurring. The ineffective portion of the cash 
flow hedge is recognized in earnings in the current period. All risk components were taken into account to determine 
the hedge effectiveness of the cash flow hedges.

106  DPL Inc.

We enter into forward power contracts to manage commodity price risk exposure related to our generation of 
electricity. We do not hedge all commodity price risk. We reclassify gains and losses on forward power contracts 
from AOCI into earnings in those periods in which the contracts settle.

We also enter into interest rate derivative contracts to manage interest rate exposure related to anticipated 
borrowings of fixed-rate debt. Our anticipated fixed-rate debt offerings have a high probability of occurrence as 
the proceeds will be used to fund existing debt maturities and projected capital expenditures. We do not hedge 
all interest rate exposure. As of December 31, 2010, we have entered into interest rate hedging relationships 
with aggregate notional amounts of $200 million and $160 million related to planned future borrowing activities in 
calendar years 2011 and 2013, respectively. We reclassify gains and losses on interest rate derivative hedges 
related to our debt financings from AOCI into earnings in those periods in which hedged interest payments occur.
The following table provides information for DPL concerning gains or losses recognized in AOCI for the cash 

flow hedges:

$ in millions (net of tax)

Beginning accumulated 

December 31, 2010

December 31, 2009

December 31, 2008

Power

Interest 
Rate Hedge

Power

Interest 
Rate Hedge

Power and 
Capacity

Interest 
Rate Hedge

derivative gain / (loss) in AOCI

$ (1.4)

$ 14.7

$ (0.2)

$ 17.2

$ (1.0)

$ 19.7

Net gains / (losses) associated with 

current period hedging transactions

Net gains reclassified to earnings

Interest Expense
Revenues

Ending accumulated 

3.1

–
(3.5)

9.2

2.2

(2.5)
–

–
(3.4)

–

(2.5)
–

4.8

–
(4.0)

–

(2.5)
–

derivative gain / (loss) in AOCI

$ (1.8)

$ 21.4

$ (1.4)

$ 14.7

$ (0.2)

$ 17.2

Net gains / (losses) associated with the 

ineffective portion of the hedging transaction:

Interest expense
Revenues

Portion expected to be reclassified 

to earnings in the next twelve months*
Maximum length of time that we are hedging 
our exposure to variability in future cash 
flows related to forecasted transactions 
(in months)

$
$

–
–

$ (2.8)

$
$

$

–
–

$
$

–
–

$
$

–
–

$
$

–
–

$
$

–
–

2.5

36

33

*The actual amounts that we reclassify from AOCI to earnings related to power can differ from the estimate above due to market price changes.

DPL Inc.  107

The following table provides information for DP&L concerning gains or losses recognized in AOCI for the cash 
flow hedges:

$ in millions (net of tax)

Beginning accumulated 

derivative gain / (loss) in AOCI
Net gains / (losses) associated with 

current period hedging transactions

Net gains reclassified to earnings

Interest Expense
Revenues

Ending accumulated 

December 31, 2010

December 31, 2009

December 31, 2008

Power

Interest 
Rate Hedge

Power

Interest 
Rate Hedge

Power and 
Capacity

Interest 
Rate Hedge

$ (1.4)

$ 14.7

$ (0.2)

$ 17.2

$ (1.0)

$ 19.7

3.1

–
(3.5)

9.2

2.2

(2.5)
–

–
(3.4)

–

(2.5)
–

4.8

–
(4.0)

–

(2.5)
–

derivative gain / (loss) in AOCI

$ (1.8)

$ 12.2

$ (1.4)

$ 14.7

$ (0.2)

$ 17.2

Net gains / (losses) associated with the 

ineffective portion of the hedging transaction:
Interest expense
Revenues

$
$

–
–

Portion expected to be reclassified 

to earnings in the next twelve months*
Maximum length of time that we are hedging 
our exposure to variability in future cash 
flows related to forecasted transactions 
(in months)

$ (2.8)

36

$
$

$

–
–

–

–

$
$

–
–

$
$

–
–

$
$

–
–

$
$

–
–

*The actual amounts that we reclassify from AOCI to earnings related to power can differ from the estimate above due to market price changes.

The following table shows the fair value and balance sheet classification of DPL’s derivative instruments designated 
as hedging instruments at December 31, 2010.

Fair Values of Derivative Instruments Designated as Hedging Instruments

DPL

$ in millions

At December 31, 2010

Fair Value(1)

Netting(2)

Balance Sheet 
Location

Fair Value on 
Balance Sheet

Short-term Derivative Positions
Forward Power Contracts in a Liability Position
Interest Rate Hedges in a Liability Position

$ (2.8)
(6.6)

$ 1.0
–

Other current liabilities
Other current liabilities

Total short-term cash flow hedges

$ (9.4)

$ 1.0

Long-term Derivative Positions
Forward Power Contracts in an Asset Position
Forward Power Contracts in a Liability Position
Interest Rate Hedges in an Asset Position

Total long-term cash flow hedges

Total cash flow hedges

(1) Includes credit valuation adjustment.

(2) Includes counterparty and collateral netting.

$ 0.2
(0.2)
20.7

$ (0.2)
0.1
–

Other deferred assets
Other deferred credits
Other deferred credits

$ 20.7

$ (0.1)

$ 11.3

$ 0.9

$ (1.8)
(6.6)

$ (8.4)

$

–
(0.1)
20.7

$ 20.6

$ 12.2

108  DPL Inc.

The following table shows the fair value and balance sheet classification of DP&L’s derivative instruments 
designated as hedging instruments at December 31, 2010.

Fair Values of Derivative Instruments Designated as Hedging Instruments

DPL

$ in millions

At December 31, 2010

Fair Value(1)

Netting(2)

Balance Sheet 
Location

Fair Value on 
Balance Sheet

Short-term Derivative Positions
Forward Power Contracts in a Liability Position

$ (2.8)

$ 1.0

Other current liabilities

Total short-term cash flow hedges

$ (2.8)

$ 1.0

Long-term Derivative Positions
Forward Power Contracts in an Asset Position
Forward Power Contracts in a Liability Position

Total long-term cash flow hedges

Total cash flow hedges

(1) Includes credit valuation adjustment.

(2) Includes counterparty and collateral netting.

$ 0.2
(0.2)

$ (0.2)
0.1

Other deferred assets
Other deferred credits

$

–

$ (0.1)

$ (2.8)

$ 0.9

$ (1.8)

$ (1.8)

$

–
(0.1)

$ (0.1)

$ (1.9)

The following table shows the fair value and balance sheet classification of DPL’s and DP&L’s derivative 
instruments designated as hedging instruments at December 31, 2009.

Fair Values of Derivative Instruments Designated as Hedging Instruments

$ in millions 

Short–term Derivative Positions
Forward Power Contracts in an Asset Position

At December 31, 2009

Fair Value(1)

Netting(2) 

Balance Sheet 
Location 

Fair Value on  
Balance Sheet 

$ 0.7

$ (0.7)

Other prepayments 
and current assets

$

–

(2.1)

$ (2.1)

Forward Power Contracts in a Liability Position

(2.8)

0.7

Other current liabilities

Total cash flow hedges

$ (2.1)

$

–

(1) Includes credit valuation adjustment

(2) Includes counterparty and collateral netting. 

Mark to Market Accounting

Certain derivative contracts are entered into on a regular basis as part of our risk management program but do not 
qualify for hedge accounting or the normal purchases and sales exceptions under FASC Topic 815. Accordingly, 
such contracts are recorded at fair value with changes in the fair value charged or credited to the consolidated 
statements of results of operations in the period in which the change occurred. This is commonly referred to as 
“MTM accounting.” Contracts we enter into as part of our risk management program may be settled financially, by 
physical delivery or net settled with the counterparty. We mark to market FTRs, heating oil futures, forward NYMEX-
quality coal contracts, natural gas futures and certain forward power contracts.

Certain qualifying derivative instruments have been designated as normal purchases or normal sales contracts, 

as provided under GAAP. Derivative contracts that have been designated as normal purchases or normal sales 
under GAAP are not subject to MTM accounting treatment and are recognized in the consolidated statements of 
results of operations on an accrual basis.

DPL Inc.  109

 
Regulatory Assets and Liabilities

In accordance with regulatory accounting under GAAP, a cost that is probable of recovery in future rates should 
be deferred as a regulatory asset and a gain that is probable of being returned to customers should be deferred 
as a regulatory liability. Portions of the derivative contracts that are marked to market each reporting period and 
are related to the retail portion of DP&L’s load requirements are included as part of the fuel and purchased power 
recovery rider approved by the PUCO which began January 1, 2010. Therefore, the Ohio retail customers’ portion 
of the heating oil futures and the NYMEX-quality coal contracts are deferred as a regulatory asset or liability until the 
contracts settle. If these unrealized gains and losses are no longer deemed to be probable of recovery through our 
rates, they will be reclassified into earnings in the period such determination is made.

The following tables show the amount and classification within the consolidated statements of results of 

operations or balance sheets of the gains and losses on DPL’s and DP&L’s derivatives not designated as hedging 
instruments for the twelve months ended December 31, 2010 and 2009.

For the Twelve Months Ended December 31, 2010

FTRs

Power

Total

NYMEX  
Coal

$ 33.5
3.2

$ 36.7

$ 20.1
4.6

$

–
12.0
–

$ 36.7

Heating 
Oil

$ 2.8
(1.6)

$ 1.2

$

$

–
1.1

–
0.1
–

$ 1.2

$ (0.6)
(1.5)

$ (2.1)

$

–
–

$ (2.1)
–
–

$ (2.1)

$ 0.1
(0.1)

$

$

$

$

–

–
–

–
–
–

–

For the Twelve Months Ended December 31, 2009

NYMEX  
Coal

$ 4.1
1.1

$ 5.2

Heating 
Oil

$ 5.1
(3.1)

$ 2.0

FTRs

Power

$ 0.8
(0.4)

$ 0.4

$ (0.2)
–

$ (0.2)

$ 1.8
1.5

$

–
(0.5)

$

–
–

$

–
–

$

–
1.9
–

$

–
2.3
0.2

$ 5.2

$ 2.0

$ 0.4
–
–

$ 0.4

$ (0.2)
–
–

$ (0.2)

$ 35.8
–

$ 35.8

$ 20.1
5.7

$ (2.1)
12.1
–

$ 35.8

Total

9.8
(2.4)

7.4

1.8
1.0

0.2
4.2
0.2

7.4

$

$

$

$

$

$ in millions  

Change in unrealized gain / (loss)
Realized gain / (loss)

Total

Recorded on Balance Sheet: 
Partners’ share of gain / (loss)
Regulatory (asset) / liability

Recorded in Income Statement: gain / (loss)
Purchased power
Fuel
O&M

Total

$ in millions  

Change in unrealized gain / (loss)
Realized gain / (loss)

Total

Recorded on Balance Sheet: 
Partners’ share of gain / (loss)
Regulatory (asset) / liability

Recorded in Income Statement: gain / (loss)
Purchased power
Fuel
O&M

Total

110  DPL Inc.

The following tables show the fair value and balance sheet classification of DPL’s and DP&L’s derivative 
instruments not designated as hedging instruments at December 31, 2010 and 2009.

Fair Values of Derivative Instruments Not Designated as Hedging Instruments

At December 31, 2010

Fair Value(1)

Netting(2)

Balance Sheet 
 Location

Fair Value on 
Balance Sheet

$ in millions

Short-term Derivative Positions
FTRs in an Asset position

Forward Power Contracts in a Liability position

(0.1)

$

0.3

$

–

–

NYMEX-Quality Coal Forwards in an Asset position

14.0

(7.4)

Heating Oil Futures in an Asset position

0.5

(0.5)

Total short-term derivative MTM positions

Long-term Derivative Positions
NYMEX-Quality Coal Forwards in an Asset position

$

$

14.7

$

(7.9)

23.5

$ (14.5)

Heating Oil Futures in an Asset position

1.1

(1.1)

Total long-term derivative MTM positions

Total MTM Position

$  24.6

$ (15.6)

$

39.3

$ (23.5)

(1) Includes credit valuation adjustment

(2) Includes counterparty and collateral netting.

Fair Values of Derivative Instruments Not Designated as Hedging Instruments

Other prepayments 
and current assets

$ 0.3

Other 
current liabilities

Other prepayments 
and current assets

Other 
current liabilities

Other 
deferred assets

Other 
deferred credits

(0.1)

6.6

–

$ 6.8

$ 9.0

–

$ 9.0

$ 15.8

$ in millions

Short-term Derivative Positions
FTRs in an Asset position

NYMEX-Quality Coal Forwards in an Asset position

NYMEX-Quality Coal Forwards in a Liability position

Heating Oil Futures in a Liability position

Forward Power Contracts in a Liability position

Total short-term derivative MTM positions

Long-term Derivative Positions
NYMEX-Quality Coal Forwards in an Asset position

Total long-term derivative MTM positions

Total MTM Position

(1) Includes credit valuation adjustment

(2) Includes counterparty and collateral netting.

At December 31, 2009

Fair Value(1)

Netting(2)

Balance Sheet  

Location

Fair Value on 
Balance Sheet

$

0.8

$

2.4

(1.2)

(1.2)

(0.2)

0.6

2.9

2.9

3.5

$

$

$

$

$

$

$ 

 $

–

–

–

1.2

–

1.2

(1.2)

(1.2)

–

Other prepayments 
and current assets

Other prepayments 
and current assets

Other 
current liabilities

Other 
current liabilities

Other 
current liabilities

Other 
deferred assets

$ 0.8

2.4

(1.2)

–

(0.2)

$ 1.8

$ 1.7

$ 1.7

$ 3.5

DPL Inc.  111

Certain of our OTC commodity derivative contracts are under master netting agreements that contain provisions 
that require our debt to maintain an investment grade credit rating from credit rating agencies. If our debt were to 
fall below investment grade, we would be in violation of these provisions, and the counterparties to the derivative 
instruments could request immediate payment or demand immediate and ongoing full overnight collateralization of 
the MTM loss. The aggregate fair value of all commodity derivative instruments that are in a MTM loss position at 
December 31, 2010 is $3.1 million. This amount is offset by $1.0 million in a broker margin account which offsets 
our loss positions on the NYMEX Clearport traded forward power contracts. This liability position is further offset 
by the asset position of counterparties with master netting agreements of $0.2 million. If our debt were to fall below 
investment grade, we may have to post collateral for the remaining $1.9 million.

10 Share-Based Compensation

In April 2006, DPL’s shareholders approved The DPL Inc. Equity and Performance Incentive Plan (the EPIP) 
which became immediately effective and will remain in effect for a term of ten years, unless terminated sooner in 
accordance with its terms. The Compensation Committee of the Board of Directors will designate the employees 
and directors eligible to participate in the EPIP and the times and types of awards to be granted. Under the EPIP, 
the Compensation Committee may grant equity-based compensation in the form of stock options, stock appreciation 
rights, restricted stock, restricted stock units, performance shares and units, and other stock-based awards. 
Awards may be subject to the achievement of certain management objectives. In addition, the EPIP provides, upon 
recommendation of the Chief Executive Officer or Chairman of the Board, for a grant of a special equity award to 
recognize outstanding performance. A total of 4,500,000 shares of DPL common stock were reserved for issuance 
under the EPIP.

The following table summarizes share-based compensation expense recorded at DPL and DP&L:

$ in millions

Restricted stock units
Performance shares
Restricted shares
Non-employee directors’ RSUs
Management performance shares

Share-based compensation included in 
Operation and maintenance expense

Income tax expense / (benefit)

For the years ended December 31,

$

2010

–
2.1
1.7
0.4
0.5

4.7
(1.6)

$

2009

–
1.8
0.7
0.5
0.7

3.7
(1.3)

2008

$ (0.1)
0.9
0.3
0.5
0.3

1.9
(0.7)

Total share-based compensation, net of tax

$ 3.1

$ 2.4

$ 1.2

Share-based awards issued in DPL’s common stock will be distributed from treasury stock. DPL has sufficient 
treasury stock to satisfy all outstanding share-based awards.

Determining Fair Value

Valuation and Amortization Method – We estimate the fair value of stock options and RSUs using a Black-Scholes-
Merton model; performance shares are valued using a Monte Carlo simulation; restricted shares are valued at the 
closing market price on the day of grant and the Directors’ RSUs are valued at the closing market price on the day 
prior to the grant date. We amortize the fair value of all awards on a straight-line basis over the requisite service 
periods, which are generally the vesting periods.

Expected Volatility – Our expected volatility assumptions are based on the historical volatility of DPL common stock. 
The volatility range captures the high and low volatility values for each award granted based on its specific terms.

Expected Life – The expected life assumption represents the estimated period of time from the grant date until the 
exercise date and reflects historical employee exercise patterns.

Risk-Free Interest Rate – The risk-free interest rate for the expected term of the award is based on the 
corresponding yield curve in effect at the time of the valuation for U.S. Treasury bonds having the same term as the 
expected life of the award, i.e., a five year bond rate is used for valuing an award with a five year expected life.

112  DPL Inc.

Expected Dividend Yield – The expected dividend yield is based on DPL’s current dividend rate, adjusted as 
necessary to capture anticipated dividend changes and the 12 month average DPL common stock price.

Expected Forfeitures – The forfeiture rate used to calculate compensation expense is based on DPL’s historical 
experience, adjusted as necessary to reflect special circumstances.

Stock Options

In 2000, DPL’s Board of Directors adopted and DPL’s shareholders approved The DPL Inc. Stock Option Plan. 
With the approval of the EPIP in April 2006, no new awards will be granted under The DPL Inc. Stock Option Plan 
but shares relating to awards that are forfeited or terminated under The DPL Inc. Stock Option Plan may be granted 
under the EPIP. As of December 31, 2010, there were no unvested stock options.

Summarized stock option activity was as follows:

Options:
Outstanding at beginning of year

Granted
Exercised
Forfeited

Outstanding at year-end 
Exercisable at year-end*

Weighted average option prices per share:
Outstanding at beginning of year

Granted
Exercised
Forfeited

Outstanding at year-end 
Exercisable at year-end

* 251,000 of these stock options expired on January 1, 2011.

For the years ended December 31,

2010

2009

2008

417,500
–
(66,000)
–
351,500
351,500

$
$
$
$
$
$

27.16
–
21.00
–
28.04
28.04

836,500
–
(419,000)
–
417,500
417,500

$
$
$
$
$
$

24.64
–
21.53
–
27.16
27.16

946,500
–
(110,000)
–
836,500
836,500

$
$
$
$
$
$

24.09
–
18.56
–
24.64
24.64

The following table reflects information about stock options outstanding at December 31, 2010:

Range of 
Exercise Prices

$14.95 – $21.00
$21.01 – $29.63

Options Outstanding

Options Exercisable

Outstanding

75,000
276,500

Weighted-Average 
Contractual Life 
(in Years)

Weighted-Average 
Exercise Price

0.3
0.1

$  20.97
$  29.42

Exercisable

75,000
276,500

Weighted-Average 
Exercise Price

$  20.97
$  29.42

The following table reflects information about stock option activity during the period:

$ in millions

Weighted-average grant date fair value of options granted during the period
Intrinsic value of options exercised during the period
Proceeds from stock options exercised during the period
Excess tax benefit from proceeds of stock options exercised
Fair value of shares that vested during the period
Unrecognized compensation expense

Weighted average period to recognize compensation expense (in years)

No options were granted during 2010, 2009 or 2008.

For the years ended December 31, 

2010

–
$
$ 0.5
$ 1.4
$ 0.1
–
$
–
$

–

2009

2008

–
$
$ 2.2
$ 9.0
$ 0.7
–
$
–
$

–

–
$
$ 1.0
$ 2.2
$ 0.3
–
$
–
$

–

DPL Inc.  113

Restricted Stock Units (RSUs)

RSUs were granted to certain key employees prior to 2001. As of December 31, 2010, there were no RSUs 
outstanding.

$ in millions 

Non-vested at January 1, 2010

Granted in 2010
Vested in 2010
Forfeited in 2010

Non-vested at December 31, 2010

Summarized RSU activity was as follows:

RSUs:
Outstanding at beginning of year

Granted
Dividends
Exercised
Forfeited

Outstanding at period end
Exercisable at period end

Number of 
RSUs

Weighted-Avg. 
Grant Date Fair Value

3,311
–
(3,311)
–

–

$ 0.1
–
(0.1)
–

$

–

For the years ended December 31,

2010

2009

2008

3,311
–
–
(3,311)

–
–

10,120
–
–
(6,809)
–

3,311
–

22,976
–
–
(11,253)
(1,603)

10,120
–

Compensation expense is recognized each quarter based on the change in the market price of DPL common stock.
As of December 31, 2010, 2009 and 2008, liabilities recorded for outstanding RSUs were zero, $0.1 million and 

$0.2 million, respectively, which are included in Other deferred credits on the balance sheets.

Performance Shares

Under the EPIP, the Board of Directors adopted a Long-Term Incentive Plan (LTIP) under which DPL will grant a 
targeted number of performance shares of common stock to executives. Grants under the LTIP will be awarded 
based on a Total Shareholder Return Relative to Peers performance. No performance shares will be earned in a 
performance period if the three-year Total Shareholder Return Relative to Peers is below the threshold of the 40th 
percentile. Further, the LTIP awards will be capped at 200% of the target number of performance shares, if the 
Total Shareholder Return Relative to Peers is at or above the threshold of the 90th percentile. The Total Shareholder 
Return Relative to Peers is considered a market condition in accordance with the accounting guidance for share-
based compensation. There is a three year requisite service period for each portion of the performance shares.
The schedule of non-vested performance share activity for the year ended December 31, 2010 follows:

$ in millions 

Non-vested at January 1, 2010

Granted in 2010
Vested in 2010
Forfeited in 2010

Non-vested at December 31, 2010

Number of 
Performance Shares

Weighted-Avg. 
Grant Date Fair Value

190,349
161,534
(110,734)
(29,651)

211,498

$ 4.3
2.9
(1.6)
(0.7)

$ 4.9

114  DPL Inc.

Performance shares:
Outstanding at beginning of year

Granted
Exercised
Expired
Forfeited

Outstanding at period end
Exercisable at period end

For the years ended December 31,

2010

2009

2008

237,704
161,534
(91,253)
–
(29,651)

278,334
66,836

156,300
124,588
–
(36,445)
(6,739)

237,704
47,355

142,108
93,298
–
(37,426)
(41,680)

156,300
36,445

The following table reflects information about performance share activity during the period:

$ in millions

Weighted-average grant date fair value of performance shares granted 

during the period

Intrinsic value of performance shares exercised during the period
Proceeds from performance shares exercised during the period
Excess tax benefit from proceeds of performance shares exercised
Fair value of performance shares that vested during the period
Unrecognized compensation expense

Weighted average period to recognize compensation expense (in years)

For the years ended December 31, 

2010

2009

2008

$
$
$
$
$
$

2.9
2.5
–
–
1.6
2.4

1.7

$
$
$
$
$
$

2.8
–
–
–
1.6
2.1

1.7

$ 2.2
–
$
–
$
$
–
$ 0.8
$ 1.6

1.6

The following table shows the assumptions used in the Monte Carlo Simulation to calculate the fair value of the 
performance shares granted during the period:

Expected volatility
Weighted-average expected volatility
Expected life (years)
Expected dividends
Weighted-average expected dividends

Risk-free interest rate

Restricted Shares

For the years ended December 31,

2009

2008

22.8% - 23.3%
22.8%
3.0

5.4% - 5.6%
5.6%

0.3% - 1.5%

15.0% - 15.7%
15.1%
3.0

3.5% - 4.1%
4.1%

2.2% - 3.2%

2010

24.3%
24.3%
3.0 
4.5%
4.5%

1.4%

Under the EPIP, the Board of Directors have granted shares of DPL restricted shares to various executives. The 
restricted shares are registered in the executive’s name, carry full voting privileges, receive dividends as declared 
and paid on all DPL common stock and vest after a specified service period.

In July 2008, the Board of Directors granted restricted stock awards to a select group of management 

employees. The management restricted stock awards have a three-year requisite service period, carry full voting 
privileges and receive dividends as declared and paid on all DPL common stock.

On September 17, 2009, the Board of Directors approved a two-part equity compensation award under the 

EPIP for certain of DPL’s executive officers. The first part is a restricted share grant and the second part is a 
matching restricted share grant. These restricted shares generally vest after five years if the participant remains 
continuously employed with DPL or a DPL subsidiary and if the year over year average basic EPS has increased 
by at least 1% per year over the five year vesting period. Under the matching restricted share grant, participants 
will have a three-year period from the date of plan implementation during which they may purchase DPL common 
stock equal in value to up to two times their base salary. DPL will match the shares purchased with another grant 
of restricted stock (matching restricted share grant). The percentage match by DPL is detailed in the table below. 
The matching restricted share grant will generally vest over a three year period if the participant continues to hold 
the originally purchased shares and remains continuously employed with DPL or a subsidiary. The restricted shares 
are registered in the executive’s name, carry full voting privileges and receive dividends as declared and paid on all 
DPL common stock.

DPL Inc.  115

The matching criteria are:

Value (Cost Basis) of Shares Purchased  
as a % of 2009 Base Salary 

Company % Match of 
Shares Purchased 

<25% 
25% to <50% 
50% to <100% 
100% to 200% 

25%
50%
75%
125%

The matching percentage is applied on a cumulative basis and the resulting restricted shares grant is adjusted at 
the end of each quarter.

Restricted shares can only be awarded in DPL common stock.

$ in millions 

Non-vested at January 1, 2010

Granted in 2010
Vested in 2010
Forfeited in 2010

Non-vested at December 31, 2010

Restricted shares:
Outstanding at beginning of year

Granted
Exercised
Forfeited

Outstanding at period end
Exercisable at period end

Number of 
Restricted Shares

Weighted-Avg. 
Grant Date Fair Value

218,197
42,977
(20,803)
(20,980)

219,391

$ 5.8
1.1
(0.6)
(0.6)

$ 5.7

For the years ended December 31,

2010

2009

2008

218,197
42,977
(20,803)
(20,980)

219,391
–

69,147
159,050
(10,000)
–

218,197
–

42,200
39,347
(1,000)
(11,400)

69,147
–

The following table reflects information about restricted share activity during the period:

$ in millions

Weighted-average grant date fair value of restricted shares granted 

during the period

Intrinsic value of restricted shares exercised during the period
Proceeds from restricted shares exercised during the period
Excess tax benefit from proceeds of restricted shares exercised
Fair value of restricted shares that vested during the period
Unrecognized compensation expense

Weighted average period to recognize compensation expense (in years)

For the years ended December 31, 

2010

2009

2008

$
$
$
$
$
$

1.1
0.4
–
0.1
0.6
3.4

2.7

$ 4.2
$ 0.3
–
$
$
–
$ 0.3
$ 4.3

3.4

$ 1.1
–
$
–
$
–
$
$
–
$ 1.3

2.7

Non-Employee Director Restricted Stock Units

Under the EPIP, as part of their annual compensation for service to DPL and DP&L, each non-employee Director 
receives a retainer in RSUs on the date of the annual meeting of shareholders. The RSUs will become non-forfeitable 
on April 15 of the following year. All of the RSUs become non-forfeitable in the event of death, disability, or change 
in control; but if the Director resigns or retires prior to the April 15 vesting date, the vested shares will be distributed 
on a pro rata basis. The RSUs accrue quarterly dividends in the form of additional RSUs. Upon vesting, the RSUs 
will become exercisable and will be distributed in DPL common stock, unless the Director chooses to defer receipt 
of the shares until a later date. The RSUs are valued at the closing stock price on the day prior to the grant and the 
compensation expense is recognized evenly over the vesting period.

116  DPL Inc.

$ in millions 

Non-vested at January 1, 2010

Granted in 2010
Dividends accrued in 2010
Vested, exercised and issued in 2010
Vested, exercised and deferred in 2010
Forfeited in 2010

Non-vested at December 31, 2010

Restricted stock units:
Outstanding at beginning of year

Granted
Dividends accrued
Vested, exercised and issued
Vested, exercised and deferred
Forfeited

Outstanding at period end
Exercisable at period end

Number of 
Director RSUs

Weighted-Avg. 
Grant Date Fair Value

20,712
15,752
2,484
(2,618)
(20,010)
–

16,320

$ 0.4
0.4
0.1
(0.1)
(0.4)
–

$ 0.4

For the years ended December 31,

2010

2009

2008

20,712
15,752
2,484
(2,618)
(20,010)
–

16,320
–

15,546
20,016
1,737
(2,066)
(14,521)
–

20,712
–

13,573
17,022
931
(7,910)
(6,921)
(1,149)

15,546
–

The following table reflects information about non-employee director RSU activity during the period:

$ in millions

Weighted-average grant date fair value of non-employee director 

RSUs granted during the period

Intrinsic value of non-employee director RSUs exercised during the period
Proceeds from non-employee director RSUs exercised during the period
Excess tax benefit from proceeds of non-employee director RSUs exercised
Fair value of non-employee director RSUs that vested during the period
Unrecognized compensation expense

Weighted average period to recognize compensation expense (in years)

For the years ended December 31, 

2010

2009

2008

$ 0.5
$ 0.5
$
–
–
$
$ 0.6
$ 0.1

0.3

$ 0.5
$ 0.4
$
–
–
$
$ 0.5
$ 0.1

0.3

$ 0.5
$ 0.4
$
–
–
$
$ 0.5
$ 0.1

0.3

Management Performance Shares

Under the EPIP, the Board of Directors granted compensation awards for select management employees. The 
grants have a three year requisite service period and certain performance conditions during the performance 
period. The management performance shares can only be awarded in DPL common stock.

$ in millions 

Non-vested at January 1, 2010

Granted in 2010
Vested in 2010
Forfeited in 2010

Non-vested at December 31, 2010

Number of Mgt. 
Performance Shares

Weighted-Avg. 
Grant Date Fair Value

84,241
37,480
(31,081)
(17,597)

73,043

$ 2.1
0.9
(0.9)
(0.4)

$ 1.7

DPL Inc.  117

Management Performance Shares:
Outstanding at beginning of year

Granted
Exercised
Forfeited

Outstanding at period end
Exercisable at period end

For the years ended December 31,

2010

2009

2008

84,241
37,480
–
(17,597)

104,124
31,081

39,144
48,719
–
(3,622)

84,241
–

–
39,144
–
–

39,144
–

The following table shows the assumptions used in the Monte Carlo Simulation to calculate the fair value of the 
management performance shares granted during the period:

For the years ended December 31,

Expected volatility
Weighted-average expected volatility
Expected life (years)
Expected dividends
Weighted-average expected dividends
Risk-free interest rate

2010

24.3%
24.3%
 3.0 
4.5%
4.5%
1.4%

2009

22.8%
22.8%
 3.0 
5.6%
5.6%
1.5%

2008

14.9%
14.9%
 3.0 
3.9%
3.9%
2.9%

The following table reflects information about management performance share activity during the period:

$ in millions

Weighted-average grant date fair value of management 
performance shares granted during the period

Intrinsic value of management performance shares exercised during the period
Proceeds from management performance shares exercised during the period
Excess tax benefit from proceeds of management performance shares exercised
Fair value of management performance shares that vested during the period
Unrecognized compensation expense

Weighted average period to recognize compensation expense (in years)

For the years ended December 31, 

2010

2009

2008

$ 0.9
–
$
–
$
$
–
$ 0.9
$ 0.9

1.7

$ 1.0
–
$
–
$
–
$
–
$
$ 1.0

1.6

$ 1.1
–
$
–
$
–
$
–
$
$ 0.8

2.0

11 Redeemable Preferred Stock

DP&L has $100 par value preferred stock, 4,000,000 shares authorized, of which 228,508 were outstanding 
as of December 31, 2010. DP&L also has $25 par value preferred stock, 4,000,000 shares authorized, none of 
which was outstanding as of December 31, 2010. The table below details the preferred shares outstanding at 
December 31, 2010:

Preferred 
Stock Rate

Redemption 
Price at 
December 31, 2010

Shares 
Outstanding at 
December 31, 2010

Par Value at 
December 31, 2010 
($ in millions)

Par Value at 
December 31, 2009 
($ in millions)

DP&L Series A
DP&L Series B
DP&L Series C

Total

3.75%
3.75%
3.90%

$  102.50
$  103.00
$  101.00

93,280
69,398
65,830

228,508

$   9.3
7.0
6.6

$ 22.9

$   9.3
7.0
6.6

$ 22.9

118  DPL Inc.

The DP&L preferred stock may be redeemed at 
DP&L’s option as determined by its Board of Directors 
at the per-share redemption prices indicated above, 
plus cumulative accrued dividends. In addition, 
DP&L’s Amended Articles of Incorporation contain 
provisions that permit preferred stockholders to elect 
members of the Board of Directors in the event that 
cumulative dividends on the preferred stock are 
in arrears in an aggregate amount equivalent to at 
least four full quarterly dividends. Since this potential 
redemption-triggering event is not solely within the 
control of DP&L, the preferred stock is presented on 
the Balance Sheets as “Redeemable Preferred Stock” 
in a manner consistent with temporary equity.
As long as any DP&L preferred stock is 

outstanding, DP&L’s Amended Articles of 
Incorporation also contain provisions restricting the 
payment of cash dividends on any of its common stock 
if, after giving effect to such dividend, the aggregate of 
all such dividends distributed subsequent to December 
31, 1946 exceeds the net income of DP&L available 
for dividends on its common stock subsequent to 
December 31, 1946, plus $1.2 million. This dividend 
restriction has historically not impacted DP&L’s ability 
to pay cash dividends and, as of December 31, 2010, 
DP&L’s retained earnings of $616.9 million were all 
available for common stock dividends payable to 
DPL. We do not expect this restriction to have an 
effect on the payment of cash dividends in the future. 
DPL records dividends on preferred stock of DP&L 
within Interest expense on the Statements of Results 
of Operations.

12 Common Shareholders’ Equity

DPL has 250,000,000 authorized common 
shares, of which 116,924,844 are outstanding at 
December 31, 2010.

On October 27, 2010, the DPL Board of Directors 

approved a new Stock Repurchase Program under 
which DPL may repurchase up to $200 million of its 
common stock from time to time in the open market, 
through private transactions or otherwise. This 2010 
Stock Repurchase Program is scheduled to run 
through December 31, 2013 but may be modified 
or terminated at any time without notice. Under this 
2010 Stock Repurchase Program, DPL repurchased 
2.04 million shares at an average per share price of 

$25.75 during the fourth quarter of 2010. At December 
31, 2010, the amount still available that could be 
used to repurchase stock under this program is 
approximately $147.5 million.

Warrants

On October 28, 2009, the DPL Board of Directors 
approved a Stock Repurchase Program under which 
DPL may use proceeds from the exercise of DPL 
warrants by warrant holders to repurchase other 
outstanding DPL warrants or its common stock from 
time to time in the open market, through private 
transactions or otherwise. This 2009 Stock Repurchase 
Program is schedule to run through June 30, 2012, 
which is three months after the end of the warrant 
exercise period. Under this 2009 Stock Repurchase 
Program, DPL repurchased a total of 145,915 shares 
during the three months ended March 31, 2010 at an 
average per share price of $26.71, effectively utilizing 
the entire $3.9 million that was available to repurchase 
stock at December 31, 2009. However, additional funds 
could be available to repurchase stock if the 1.7 million 
warrants outstanding at December 31, 2010 are 
exercised for cash in the future.

In February 2000, DPL entered into a series 
of recapitalization transactions which included the 
issuance of 31.6 million warrants for an aggregate 
purchase price of $50 million. The warrants are 
exercisable, in whole or in part, for common shares at 
any time during the twelve-year period commencing on 
March 13, 2000. Each warrant is exercisable for one 
common share, subject to anti-dilution adjustments 
(e.g., stock split, stock dividend) at an exercise price of 
$21.00 per common share.

In addition, in the event of a declaration, issuance 

or consummation of any dividend, spin-off or other 
distribution or similar transaction by DPL of the capital 
stock of any of its subsidiaries, additional warrants of 
such subsidiary will be issued to the warrant holder so 
that after the transaction, the warrant holder will have 
the same interest in the fully diluted number of common 
shares of such subsidiary the warrant holder had in 
DPL immediately prior to such transaction.

Pursuant to the warrant agreement, DPL has 
authorized common shares sufficient to provide for 
the exercise in full of all outstanding warrants. At 
December 31, 2010, DPL had 1.7 million outstanding 
warrants which are exercisable in the future.

DPL Inc.  119

Dividend Reinvestment Plan

On March 1, 2009, DPL introduced a new direct 
stock purchase and dividend reinvestment plan. The 
plan provides both registered shareholders and new 
investors with the ability to purchase shares and also 
to reinvest their dividends. This plan is administered by 
Computershare Trust Company, N.A., and not by DPL.

Shareholder Rights Plan

In September 2001, DPL’s Board of Directors renewed 
its Shareholder Rights Plan, attaching one right to 
each common share outstanding at the close of 
business on December 13, 2001. The rights separate 
from the common shares and become exercisable 
at the exercise price of $130 per right in the event of 
certain attempted business combinations. In October 
2010, DPL’s Board of Directors voted to amend the 
Shareholder Rights Plan to accelerate the expiration 
date. DPL expects the Shareholder Rights Plan to 
expire during the first quarter of 2011.

ESOP

During October 1992, our Board of Directors approved 
the formation of a Company-sponsored ESOP to fund 
matching contributions to DP&L’s 401(k) retirement 
savings plan and certain other payments to eligible 
full-time employees. This leveraged ESOP is funded by 
an exempt loan, which is secured by the ESOP shares. 
As debt service payments are made on the loan, shares 
are released on a pro rata basis. ESOP shares used to 
fund matching contributions to DP&L’s 401(k) vest after 
three years of service; contributions after 2010 will vest 
after two years of service. Other compensation shares 
awarded vest immediately.

In general, participants are eligible for lump 
sum payments upon termination of their employment 
and the submission and subsequent approval of an 
application for benefits. Earlier distributions can occur 
for a Qualified Domestic Relations Order or for death. 
Otherwise, distribution must occur within 60 days after 
the plan year in which the later of one of the following 
events occur: 65th birthday, 10th anniversary of 
participation, or termination of employment. Participants 
are allowed to take distributions during employment if 
older than 59½ and/or for a hardship as defined in the 
Plan document. Additionally, participants may elect 
on a quarterly basis to diversify their vested ESOP 
shares into DP&L’s 401(k) retirement savings plan. 
Distributions are made in cash unless the participant 
requests the distribution be made in stock. A 
repurchase obligation exists for vested shares held by 

the ESOP if they cannot be sold in the open market. The 
fair value of shares subject to the repurchase obligation 
at December 31, 2010 and 2009 was approximately 
$54.1 million and $57.6 million, respectively.

In 1992, the Plan entered into a $90 million loan 
agreement with DPL in order to purchase shares of 
DPL common stock in the open market. The term 
loan agreement provided for principal and interest on 
the loan to be paid prior to October 9, 2007, with the 
right to extend the loan for an additional ten years. In 
2007, the maturity date was extended to October 7, 
2017. Effective January 1, 2009, the interest on the 
loan was amended to a fixed rate of 2.06%, payable 
annually. Dividends received by the ESOP are used to 
repay the principal and interest on the ESOP loan to 
DPL. Dividends on the allocated shares are charged 
to retained earnings and the share value of these 
dividends is allocated to participants.

The ESOP used the full amount of the loan to 
purchase 4.7 million shares of DPL common stock in 
the open market. As a result of the 1997 stock split, 
the ESOP held 7.1 million shares of DPL common 
stock. The cost of shares held by the ESOP and not 
yet released is reported as a reduction of Common 
shareholders’ equity. At December 31, 2010, Common 
shareholders’ equity reflects the cost of 2.5 million 
unreleased shares held in suspense by the DPL Inc. 
Employee Stock Ownership Trust. The fair value 
of the 2.5 million ESOP shares held in suspense 
at December 31, 2010 was $65.3 million. When 
shares are committed to be released from the ESOP, 
compensation expense is recorded based on the fair 
value of the shares committed to be released, with 
a corresponding credit to our equity. Compensation 
expense associated with the ESOP, which is based on 
the fair value of the shares committed to be released for 
allocation, amounted to $6.7 million in 2010, $4.0 million 
in 2009 and $1.5 million in 2008.

For purposes of EPS computations and in 
accordance with GAAP, we treat ESOP shares as 
outstanding if they have been allocated to participants, 
released or have been committed to be released. As of 
December 31, 2010, the ESOP has 4.5 million shares 
allocated to participants with an additional 0.1 million 
shares which have been released or committed to 
be released but unallocated to participants. ESOP 
cumulative shares outstanding for the calculation of 
EPS were 4.6 million in 2010, 4.2 million in 2009 and 
4.0 million in 2008.

120  DPL Inc.

13 Comprehensive Income (Loss)

Comprehensive income (loss) is defined as the change in equity (net assets) of a business entity during a period 
from transactions and other events and circumstances from non-owner sources. It includes all changes in equity 
during a period except those resulting from investments by owners and distributions to owners. Comprehensive 
income (loss) has two components: Net income (loss) and Other comprehensive income (loss).

The following table provides the tax effects allocated to each component of Other comprehensive income (loss) 

for the years ended December 31, 2010, 2009 and 2008:

$ in millions

2008:
Unrealized gains / (losses) on  

financial instruments
Deferred gains / (losses) on  

cash flow hedges

Unrealized gains / (losses) on  

DPL

Tax 
(expense) / 
benefit

Amount 
before tax

 Amount 
after tax

Amount 
before tax

DP&L

Tax 
(expense) / 
benefit

 Amount 
after tax

$ (0.8)

$ 0.3

$ (0.5)

$ (15.0)

$ 5.2

$

(9.8)

(1.3)

(0.4)

(1.7)

(1.3)

(0.4)

(1.7)

pension and postretirement benefits

Other comprehensive income (loss)

(33.1)
$ (35.2)

11.6
$ 11.5

(21.5)
$ (23.7)

(33.4)
$ (49.7)

11.7
$ 16.5

(21.7)
$ (33.2)

(3.7)

(2.7)
(3.7)

(2.8)

3.3
(0.5)

2009:
Unrealized gains / (losses) on  

financial instruments
Deferred gains / (losses) on  

cash flow hedges

Unrealized gains / (losses) on  

2010:
Unrealized gains / (losses) on  

financial instruments
Deferred gains / (losses) on  

cash flow hedges

Unrealized gains / (losses) on  

$

0.8

$ (0.3)

$

0.5

$

4.2

$ (1.5)

$

2.7

(4.3)

0.6

(3.7)

(4.3)

0.6

pension and postretirement benefits

Other comprehensive income (loss)

(4.1)
$ (7.6)

1.4
$ 1.7

(2.7)
$ (5.9)

(4.1)
$ (4.2)

1.4
$ 0.5

$

$

0.6

$ (0.2)

$

0.4

$ (1.6)

$ 0.6

$

(1.0)

11.0

(4.6)

6.4

(3.1)

0.3

pension and postretirement benefits

Other comprehensive income (loss)

4.3
$ 15.9

(1.0)
$ (5.8)

3.3
$ 10.1

4.3
$ (0.4)

(1.0)
$ (0.1)

$

The following table provides the detail of each component of Other comprehensive income (loss) reclassified to Net 
income during the years ended December 31, 2010, 2009 and 2008:

$ in millions

DPL

No unrealized gains or losses on financial instruments were  

transferred to income in 2010, 2009 or 2008.

Deferred gains/(losses) on cash flow hedges net of income tax  

2010

2009

2008

$

–

$

–

$

–

(expenses)/benefits of $2.0 million, ($1.8) million and ($2.2) million, respectively.

(6.0)

5.9

Unrealized losses on pension and postretirement benefits net of income  
tax benefits of $1.3 million, $1.1 million and $0.7 million, respectively.

(2.4)
$ (8.4)

(2.1)
$ 3.8

$

6.5

(1.3)
5.2

DP&L

Unrealized gains/(losses) on financial instruments net of income tax  

(expenses)/benefits of zero, ($0.4) million and ($1.4) million, respectively.

$ (0.1)

$ 0.7

$

2.7

Deferred gains/(losses) on cash flow hedges net of income tax  

(expenses)/benefits of $2.0 million, ($1.8) million and ($2.2) million, respectively.

(6.0)

5.9

Unrealized losses on pension and postretirement benefits net of income  
tax benefits of $1.3 million, $1.1 million and $0.7 million, respectively.

(2.4)
$ (8.5)

(2.1)
$ 4.5

$

6.5

(1.3)
7.9

DPL Inc.  121

Accumulated Other Comprehensive Income (Loss)

AOCI is included on our balance sheets within the Common shareholders’ equity sections. The following table 
provides the components that constitute the balance sheet amounts in AOCI at December 31, 2010 and 2009:

$ in millions

DPL
Financial instruments, net of tax
Cash flow hedges, net of tax
Pension and postretirement benefits, net of tax

Total

DP&L
Financial instruments, net of tax
Cash flow hedges, net of tax
Pension and postretirement benefits, net of tax

Total

14 EPS

2010

2009

$

0.6
19.6
(39.1)
$ (18.9)

$

8.4
10.5
(39.1)
$ (20.2)

$

0.2
13.3
(42.5)
$ (29.0)

$

9.5
13.3
(42.5)
$ (19.7)

Basic EPS is based on the weighted-average number of DPL common shares outstanding during the year. Diluted 
EPS is based on the weighted-average number of DPL common and common-equivalent shares outstanding during 
the year, except in periods where the inclusion of such common-equivalent shares is anti-dilutive. Excluded from 
outstanding shares for these weighted-average computations are shares held by DP&L’s Master Trust Plan for 
deferred compensation and unreleased shares held by DPL’s ESOP.

The common-equivalent shares excluded from the calculation of diluted EPS, because they were anti-dilutive, 
were not material for all the periods ended December 31, 2010, 2009 and 2008. These shares may be dilutive in the 
future.

The following illustrates the reconciliation of the numerators and denominators of the basic and diluted EPS 

computations:

$ and shares in millions
except per share amounts

2010

2009

2008

Income

Shares Per Share

Income

Shares

Per Share

Income

Shares

Per Share

Basic EPS

$ 290.3

115.6

$ 2.51

$ 229.1

112.9

$ 2.03

$ 244.5

110.2

$ 2.22

Effect of Dilutive Securities:
Warrants 
Stock options, performance  
and restricted shares 

0.3

0.2

1.1

0.2

5.0

0.2

Diluted EPS

$ 290.3

116.1

$ 2.50

$ 229.1

114.2

$ 2.01

$ 244.5

115.4

$ 2.12

15 Insurance Recovery

On May 16, 2007, DPL filed a claim with Energy Insurance Mutual (EIM) to recoup legal costs associated with 
our litigation against certain former executives. On February 15, 2010, after having engaged in both mediation 
and arbitration, DPL and EIM entered into a settlement agreement resolving all coverage issues and finalizing 
all obligations in connection with the claim. The proceeds from the settlement amounted to $3.4 million, net of 
associated expenses, and were recorded as a reduction to operation and maintenance expense during the year 
ended December 31, 2010.

122  DPL Inc.

16 Contractual Obligations, Commercial Commitments and Contingencies

DPL – Guarantees

In the normal course of business, DPL enters into various agreements with its wholly-owned subsidiaries, DPLE and 
DPLER, providing financial or performance assurance to third parties. These agreements are entered into primarily 
to support or enhance the creditworthiness otherwise attributed to DPLE and DPLER on a stand-alone basis, thereby 
facilitating the extension of sufficient credit to accomplish DPLE’s and DPLER’s intended commercial purposes.

At December 31, 2010, DPL had $57.8 million of guarantees to third parties for future financial or performance 

assurance under such agreements, on behalf of DPLE and DPLER. The guarantee arrangements entered into by 
DPL with these third parties cover all present and future obligations of DPLE and DPLER to such beneficiaries and 
are terminable at any time by DPL upon written notice to the beneficiaries. The carrying amount of obligations for 
commercial transactions covered by these guarantees and recorded in our Consolidated Balance Sheets was 
$1.7 million and $0.6 million at December 31, 2010 and 2009, respectively.

To date, neither DPL nor DP&L have incurred any losses related to the guarantees of DPLE’s and DPLER’s 
obligations and we believe it is remote that either DPL or DP&L would be required to perform or incur any losses in 
the future associated with any of the above guarantees of DPLE’s and DPLER’s obligations.

DP&L – Equity Ownership Interest

DP&L owns a 4.9% equity ownership interest in an electric generation company which is recorded using the cost 
method of accounting under GAAP. As of December 31, 2010, DP&L could be responsible for the repayment of 
4.9%, or $62.3 million, of a $1,272.2 million debt obligation that matures in 2026. This would only happen if this 
electric generation company defaulted on its debt payments. As of December 31, 2010, we have no knowledge of 
such a default.

Contractual Obligations and Commercial Commitments

We enter into various contractual obligations and other commercial commitments that may affect the liquidity of our 
operations. At December 31, 2010, these include:

$ in millions

DPL 

Long-term debt
Interest payments
Pension and postretirement payments
Capital leases
Operating leases
Coal contracts (a)
Limestone contracts (a)
Purchase orders and  

other contractual obligations

Total contractual obligations

DP&L 

Long-term debt
Interest payments
Pension and postretirement payments
Capital leases
Operating leases
Coal contracts (a)
Limestone contracts (a)
Purchase orders and 

other contractual obligations

Total contractual obligations

(a) Total at DP&L-operated units

Total

2011

2012-2013

2014-2015

Thereafter

Payment Year

$ 1,324.4
677.9
258.5
0.2
0.9
1,409.0
42.9

141.5
$ 3,855.3

$

884.4
424.8
258.5
0.2
0.9
1,409.0
42.9

$ 297.4
64.7
23.8
0.1
0.4
415.2
5.6

71.1
$ 878.3

$

–
39.5
23.8
0.1
0.4
415.2
5.6

$

470.0
96.1
51.0
0.1
0.3
501.3
11.7

$

–
53.9
52.0
–
0.2
177.6
12.4

$

557.0
463.2
131.7
–
–
314.9
13.2

56.0
$ 1,186.5

11.7
$ 307.8

2.7
$ 1,482.7

$

470.0
72.9
51.0
0.1
0.3
501.3
11.7

$

–
30.7
52.0
–
0.2
177.6
12.4

$

414.4
281.7
131.7
–
–
314.9
13.2

142.7
$ 3,163.4

72.2
$ 556.8

56.1
$ 1,163.4

11.7
$ 284.6

2.7
$ 1,158.6

DPL Inc.  123

Long-term debt:

DPL’s long-term debt as of December 31, 2010, 
consists of DP&L’s first mortgage bonds and tax-exempt 
pollution control bonds and DPL’s unsecured senior 
notes. These long-term debt amounts include current 
maturities but exclude unamortized debt discounts.

DP&L’s long-term debt as of December 31, 2010, 

consists of first mortgage bonds and tax-exempt 
pollution control bonds. These long-term debt amounts 
include current maturities but exclude unamortized 
debt discounts.

See Note 5 and Note 18 of Notes to Consolidated 

Financial Statements.

Interest payments:

Interest payments are associated with the long-term 
debt described above. The interest payments relating 
to variable-rate debt are projected using the interest 
rate prevailing at December 31, 2010.

Pension and postretirement payments:

As of December 31, 2010, DPL, through its 
principal subsidiary DP&L, had estimated future 
benefit payments as outlined in Note 7 of Notes to 
Consolidated Financial Statements. These estimated 
future benefit payments are projected through 2020.

Capital leases:

As of December 31, 2010, DPL, through its principal 
subsidiary DP&L, had one immaterial capital lease that 
expires in 2013.

Operating leases:

As of December 31, 2010, DPL, through its principal 
subsidiary DP&L, had several immaterial operating 
leases with various terms and expiration dates.

Coal contracts:

DPL, through its principal subsidiary DP&L, has 
entered into various long-term coal contracts to supply 
the coal requirements for the generating plants it 
operates. Some contract prices are subject to periodic 
adjustment and have features that limit price escalation 
in any given year.

Limestone contracts:

DPL, through its principal subsidiary DP&L, has 
entered into various limestone contracts to supply 
limestone used in the operation of FGD equipment at its 
generating facilities.

Purchase orders and other contractual obligations:

As of December 31, 2010, DPL and DP&L had various 
other contractual obligations including non-cancelable 
contracts to purchase goods and services with various 
terms and expiration dates.

Reserve for uncertain tax positions:

Due to the uncertainty regarding the timing of future 
cash outflows associated with our unrecognized tax 
benefits of $19.4 million, we are unable to make a 
reliable estimate of the periods of cash settlement with 
the respective tax authorities and have not included 
such amounts in the contractual obligations table above.

Contingencies

In the normal course of business, we are subject to 
various lawsuits, actions, proceedings, claims and 
other matters asserted under laws and regulations. 
We believe the amounts provided in our Consolidated 
Financial Statements, as prescribed by GAAP, are 
adequate in light of the probable and estimable 
contingencies. However, there can be no assurances 
that the actual amounts required to satisfy alleged 
liabilities from various legal proceedings, claims, tax 
examinations, and other matters, including the matters 
discussed below, and to comply with applicable laws 
and regulations, will not exceed the amounts reflected 
in our Consolidated Financial Statements. As such, 
costs, if any, that may be incurred in excess of those 
amounts provided as of December 31, 2010, cannot be 
reasonably determined.

Environmental Matters

DPL, DP&L and our subsidiaries’ facilities and 
operations are subject to a wide range of environmental 
regulations and laws by federal, state and local 
authorities. As well as imposing continuing compliance 
obligations, these laws and regulations authorize the 
imposition of substantial penalties for noncompliance, 
including fines, injunctive relief and other sanctions. In 
the normal course of business, we have investigatory 
and remedial activities underway at these facilities 
to comply, or to determine compliance, with such 
regulations. We record liabilities for losses that 
are probable of occurring and can be reasonably 
estimated. We have reserves of approximately 
$4.0 million for environmental matters. We evaluate the 
potential liability related to probable losses quarterly 
and may revise our estimates. Such revisions in the 
estimates of the potential liabilities could have a 
material effect on our results of operations, financial 
condition or cash flows.

We have several pending environmental matters 
associated with our power plants. Some of these matters 
could have material adverse impacts on the operation 
of the power plants; especially the plants that do not 
have SCR and FGD equipment installed to further control 
certain emissions. Currently, Hutchings and Beckjord 
are our only coal-fired power plants that do not have this 
equipment installed. DP&L owns 100% of the Hutchings 
plant and a 50% interest in Beckjord Unit 6.

124  DPL Inc.

Regulation Matters Related to Air Quality

Interstate Air Quality Rule

Clean Air Act Compliance

In 1990, the federal government amended the CAA to 
further regulate air pollution. Under the law, the USEPA 
sets limits on how much of a pollutant can be in the air 
anywhere in the United States. The CAA allows individual 
states to have stronger pollution controls, but states are 
not allowed to have weaker pollution controls than those 
set for the whole country. The CAA has a material effect 
on our operations and such effects are detailed below 
with respect to certain programs under the CAA.
On October 27, 2003, the USEPA published 
final rules regarding the equipment replacement 
provision (ERP) of the routine maintenance, repair and 
replacement (RMRR) exclusion of the CAA. Activities 
at power plants that fall within the scope of the RMRR 
exclusion do not trigger new source review (NSR) 
requirements, including the imposition of stricter 
emission limits. On December 24, 2003, the United 
States Court of Appeals for the D.C. Circuit stayed the 
effective date of the rule pending its decision on the 
merits of the lawsuits filed by numerous states and 
environmental organizations challenging the final rules. 
On June 6, 2005, the USEPA issued its final response 
on the reconsideration of the ERP exclusion. The USEPA 
clarified its position, but did not change any aspect of 
the 2003 final rules. This decision was appealed and the 
D.C. Circuit vacated the final rules on March 17, 2006. 
The scope of the RMRR exclusion remains uncertain 
due to this action by the D.C. Circuit, as well as multiple 
litigations not directly involving us where courts are 
defining the scope of the exception with respect to the 
specific facts and circumstances of the particular power 
plants and activities before the courts. While we believe 
that we have not engaged in any activities with respect 
to our existing power plants that would trigger the NSR 
requirements, if NSR requirements were imposed on 
any of DP&L’s existing power plants, the results could 
have a material adverse impact to us.

The USEPA issued a proposed rule on 

October 20, 2005 concerning the test for measuring 
whether modifications to electric generating units 
should trigger application of NSR standards under the 
CAA. A supplemental rule was also proposed on May 
8, 2007 to include additional options for determining 
if there is an emissions increase when an existing 
electric generating unit makes a physical or operational 
change. The rule was challenged by environmental 
organizations and has not been finalized. While we 
cannot predict the outcome of this rulemaking, any 
finalized rules could materially affect our operations.

On December 17, 2003, the USEPA proposed the 
Interstate Air Quality Rule (IAQR) designed to reduce 
and permanently cap SO2 and NOx emissions from 
electric utilities. The proposed IAQR focused on states, 
including Ohio, whose power plant emissions are 
believed to be significantly contributing to fine particle 
and ozone pollution in other downwind states in the 
eastern United States. On June 10, 2004, the USEPA 
issued a supplemental proposal to the IAQR, now 
renamed the Clean Air Interstate Rule (CAIR). The 
final rules were signed on March 10, 2005 and were 
published on May 12, 2005. CAIR created an interstate 
trading program for annual NOx emission allowances 
and made modifications to an existing trading program 
for SO2. On August 24, 2005, the USEPA proposed 
additional revisions to the CAIR. On July 11, 2008, the 
U.S. Court of Appeals for the District of Columbia Circuit 
issued a decision to vacate the USEPA’s CAIR and its 
associated Federal Implementation Plan and remanded 
to the USEPA with instructions to issue new regulations 
that conformed with the procedural and substantive 
requirements of the CAA. The Court’s decision, 
in part, invalidated the new NOx annual emission 
allowance trading program and the modifications to 
the SO2 emission trading program established by the 
March 10, 2005 rules, and created uncertainty regarding 
future NOx and SO2 emission reduction requirements and 
their timing. The USEPA and a group representing utilities 
filed a request on September 24, 2008 for a rehearing 
before the entire Court. On December 23, 2008, the U.S. 
Court of Appeals issued an order on reconsideration 
that permits CAIR to remain in effect until the USEPA 
issues new regulations that would conform to the CAA 
requirements and the Court’s July 11, 2008 decision.

In the fourth quarter of 2007, DP&L began a program 

for selling excess emission allowances, including annual 
NOx emission allowances and SO2 emission allowances 
that were the subject of CAIR trading programs. In 
subsequent quarters, DP&L recognized gains from the 
sale of excess emission allowances to third parties. The 
Court’s CAIR decision affected the trading market for 
excess allowances and impacted DP&L’s program for 
selling additional excess allowances in 2008. In January 
2009, we resumed selling excess allowances due to 
the revival of the emissions trading market. On July 6, 
2010, the USEPA proposed the Clean Air Transport 
Rule (CATR) which will effectively replace CAIR. We 
have reviewed this proposal and submitted comments 
to the USEPA on September 30, 2010. We are unable 
to determine the overall financial impact that these rules 
could have on our operations in the future.

DPL Inc.  125

In 2007, the Ohio EPA revised their State 
Implementation Plan (SIP) to incorporate a CAIR 
program consistent with the IAQR. The Ohio EPA 
had received partial approval from the USEPA and 
had been awaiting full program approval from the 
USEPA when the U.S. Court of Appeals issued its 
July 11, 2008 decision. As a result of the December 
23, 2008 order, the Ohio EPA proposed revised rules 
on May 11, 2009, which were finalized on July 15, 2009. 
On September 25, 2009, the USEPA issued a full SIP 
approval for the Ohio CAIR program. We do not expect 
that full SIP approval of the Ohio CAIR program will 
have a significant impact on operations.

Mercury and Other Hazardous Air Pollutants

On January 30, 2004, the USEPA published its proposal 
to restrict mercury and other air toxins from coal-fired and 
oil-fired utility plants. The USEPA “de-listed” mercury as a 
hazardous air pollutant from coal-fired and oil-fired utility 
plants and, instead, proposed a cap-and-trade approach 
to regulate the total amount of mercury emissions allowed 
from such sources. The final Clean Air Mercury Rule 
(CAMR) was signed March 15, 2005 and was published 
on May 18, 2005. On March 29, 2005, nine states sued 
the USEPA, opposing the cap-and-trade regulatory 
approach taken by the USEPA. In 2007, the Ohio EPA 
adopted rules implementing the CAMR program. On 
February 8, 2008, the U.S. Court of Appeals for the District 
of Columbia Circuit struck down the USEPA regulations, 
finding that the USEPA had not complied with statutory 
requirements applicable to “de-listing” a hazardous air 
pollutant and that a cap-and-trade approach was not 
authorized by law for “listed” hazardous air pollutants. A 
request for rehearing before the entire Court of Appeals 
was denied and a petition for review before the U.S. 
Supreme Court was filed on October 17, 2008. On 
February 23, 2009, the U.S. Supreme Court denied the 
petition. The USEPA is expected to propose Maximum 
Achievable Control Technology (MACT) standards for 
coal- and oil-fired electric generating units during the 
quarter ending March 31, 2011 and finalize during the 
quarter ending December 31, 2011. Upon publication in 
the federal register following finalization, affected electric 
generating units (EGUs) will have three years to come 
into compliance with the new requirements. DP&L is 
unable to determine the impact of the promulgation of 
new MACT standards on its financial condition or results 
of operations; however, a MACT standard could have 
a material adverse effect on our operations. We cannot 
predict the final costs we may incur to comply with 
proposed new regulations to control mercury or other 
hazardous air pollutants.

On April 29, 2010, the USEPA issued a proposed 
rule that would reduce emissions of toxic air pollutants 
from new and existing industrial, commercial and 
institutional boilers, and process heaters at major and 
area source facilities. This regulation may affect five 
auxiliary boilers used for start-up purposes at DP&L’s 
generation facilities. The proposed regulations contain 
emissions limitations, operating limitations and other 
requirements. The compliance schedule will be three 
years from the date when these rules, if finalized, 
become effective. We currently cannot determine 
whether or not these rules will be finalized nor can 
we predict the effect of compliance costs, if any, on 
DP&L’s operations. Such costs, however, are not 
expected to be material.

On May 3, 2010, the USEPA finalized the “National 

Emissions Standards for Hazardous Air Pollutants” 
(NESHAP) for compression ignition (CI) reciprocating 
internal combustion engines (RICE). The units affected 
at DP&L are 18 diesel electric generating engines and 
eight emergency “black start” engines. The existing 
CI RICE units must comply by May 3, 2013. The 
regulations contain emissions limitations, operating 
limitations and other requirements. Compliance costs 
on DP&L’s operations are not expected to be material.

National Ambient Air Quality Standards

On January 5, 2005, the USEPA published its final non-
attainment designations for the National Ambient Air 
Quality Standard (NAAQS) for Fine Particulate Matter 
2.5 (PM 2.5). These designations included counties and 
partial counties in which DP&L operates and/or owns 
generating facilities. On March 4, 2005, DP&L and 
other Ohio electric utilities and electric generators filed 
a petition for review in the D.C. Circuit Court of Appeals, 
challenging the final rule creating these designations. 
On November 30, 2005, the court ordered the 
USEPA to decide on all petitions for reconsideration 
by January 20, 2006. On January 20, 2006, the 
USEPA denied the petitions for reconsideration. On 
July 7, 2009, the D.C. Circuit Court of Appeals upheld 
the USEPA non-attainment designations for the areas 
impacting DP&L’s generation plants, however, on 
October 8, 2009 the USEPA issued new designations 
based on 2008 monitoring data that showed all areas in 
attainment to the standard with the exception of several 
counties in northeastern Ohio. The USEPA is expected 
to propose revisions to the PM 2.5 standard during 
the first quarter of 2011 as part of its routine five-year 
rule review cycle. We cannot predict the impact the 
revisions to the PM 2.5 standard will have on DP&L’s 
financial condition or results of operations.

126  DPL Inc.

On May 5, 2004, the USEPA issued its proposed 
regional haze rule, which addresses how states should 
determine the Best Available Retrofit Technology 
(BART) for sources covered under the regional haze 
rule. Final rules were published July 6, 2005, providing 
states with several options for determining whether 
sources in the state should be subject to BART. In the 
final rule, the USEPA made the determination that CAIR 
achieves greater progress than BART and may be 
used by states as a BART substitute. Numerous units 
owned and operated by us will be impacted by BART. 
We cannot determine the extent of the impact until Ohio 
determines how BART will be implemented.

On September 16, 2009, the USEPA announced 

that it would reconsider the 2008 national ground 
level ozone standard. A more stringent ambient ozone 
standard may lead to stricter NOx emission standards 
in the future. DP&L cannot determine the effect of this 
potential change, if any, on its operations.

Effective April 12, 2010, the USEPA implemented 

revisions to its primary NAAQS for nitrogen dioxide. 
This change may affect certain emission sources 
in heavy traffic areas like the I-75 corridor between 
Cincinnati and Dayton after 2016. Several of our 
facilities or co-owned facilities are within this area. 
DP&L cannot determine the effect of this potential 
change, if any, on its operations.

Effective August 23, 2010, the USEPA implemented 

revisions to its primary NAAQS for SO2 replacing the 
current 24-hour standard and annual standard with a 
one hour standard. DP&L cannot determine the effect 
of this potential change, if any, on its operations. No 
effects are anticipated before 2014.

Climate Change

In response to a U.S. Supreme Court decision 
that the USEPA has the authority to regulate CO2 
emissions from motor vehicles, the USEPA made 
a finding that CO2 and certain other GHGs are 
pollutants under the CAA. Subsequently, under the 
CAA, USEPA determined that CO2 and other GHGs 
from motor vehicles threaten the health and welfare 
of future generations by contributing to climate 
change. This finding became effective in January 
2010. Numerous affected parties have petitioned 
the USEPA Administrator to reconsider this decision. 
On April 1, 2010, USEPA signed the “Light-Duty 
Vehicle Greenhouse Gas Emission Standards and 
Corporate Average Fuel Economy Standards” rule. 
Under USEPA’s view, this is the final action that 
renders carbon dioxide and other GHGs “regulated air 
pollutants” under the CAA. As a result of this action, it 

is expected that in 2011 various permitting programs 
will apply to other combustion sources, such as coal-
fired power plants. We cannot predict the effect of this 
change, if any, on DP&L’s operations.

Legislation proposed in 2009 to target a reduction 

in the emission of GHGs from large sources was 
not enacted. Approximately 99% of the energy we 
produce is generated by coal. DP&L’s share of CO2 
emissions at generating stations we own and co-own 
is approximately 16 million tons annually. Proposed 
GHG legislation finalized at a future date could have 
a significant effect on DP&L’s operations and costs, 
which could adversely affect our net income, cash flows 
and financial condition. However, due to the uncertainty 
associated with such legislation, we cannot predict the 
final outcome or the financial impact that this legislation 
will have on DP&L.

On September 22, 2009, the USEPA issued a 
final rule for mandatory reporting of GHGs from large 
sources that emit 25,000 metric tons per year or 
more of CO2, including electric generating units. The 
first report is due in March 2011 for 2010 emissions. 
This reporting rule will guide development of policies 
and programs to reduce emissions. DP&L does not 
anticipate that this reporting rule will result in any 
significant cost or other impact on current operations.

Litigation, Notices of Violation and Other Matters 
Related to Air Quality

Litigation Involving Co-Owned Plants

In 2004, eight states and the City of New York filed 
a lawsuit in Federal District Court for the Southern 
District of New York against American Electric Power 
Company, Inc. (AEP), one of AEP’s subsidiaries, 
Cinergy Corp. (a subsidiary of Duke Energy 
Corporation (Duke Energy)) and four other electric 
power companies. A similar lawsuit was filed against 
these companies in the same court by Open Space 
Institute, Inc., Open Space Conservancy, Inc. and 
The Audubon Society of New Hampshire. The lawsuits 
allege that the companies’ emissions of CO2 contribute 
to global warming and constitute a public or private 
nuisance. The lawsuits seek injunctive relief in the 
form of specific emission reduction commitments. In 
2005, the Federal District Court dismissed the lawsuits, 
holding that the lawsuits raised political questions that 
should not be decided by the courts. The plaintiffs 
appealed. Finding that the plaintiffs have standing 
to sue and can assert federal common law nuisance 
claims, the United States Court of Appeals for the 
Second Circuit on September 21, 2009 vacated the 
dismissal of the Federal District Court and remanded 

DPL Inc.  127

the lawsuits back to the Federal District Court for further 
proceedings. In response to a petition by the company 
defendants, the U.S. Supreme Court on December 6, 
2010 granted a hearing on the matter. Although we 
are not named as a party to these lawsuits, DP&L is 
a co-owner of coal-fired plants with Duke Energy and 
AEP (or their subsidiaries) that could be affected by 
the outcome of these lawsuits. The outcome of these 
lawsuits could also encourage these or other plaintiffs 
to file similar lawsuits against other electric power 
companies, including DP&L. We are unable to predict 
the impact that these lawsuits might have on DP&L.
On September 21, 2004, the Sierra Club filed a 

lawsuit against DP&L and the other owners of the 
J.M. Stuart generating station in the U.S. District Court 
for the Southern District of Ohio for alleged violations 
of the CAA and the station’s operating permit. On 
August 7, 2008, a consent decree was filed in the 
U.S. District Court in full settlement of these CAA 
claims. Under the terms of the consent decree, DP&L 
and the other owners of the J.M. Stuart generating 
station agreed to: (i) certain emission targets related 
to NOx, SO2 and particulate matter; (ii) make energy 
efficiency and renewable energy commitments that 
are conditioned on receiving PUCO approval for the 
recovery of costs; (iii) forfeit 5,500 SO2 allowances; 
and (iv) provide funding to a third party non-profit 
organization to establish a solar water heater rebate 
program. DP&L and the other owners of the station 
also entered into an attorneys’ fee agreement to pay 
a portion of the Sierra Club’s attorney and expert 
witness fees. The parties to the lawsuit filed a joint 
motion on October 22, 2008, seeking an order by the 
U.S. District Court approving the consent decree with 
funding for the third party non-profit organization set at 
$300,000. On October 23, 2008, the U.S. District Court 
approved the consent decree. On October 21, 2009, 
the Sierra Club filed with the U.S. District Court a motion 
for enforcement of the consent decree based on the 
Sierra Club’s interpretation of the consent decree that 
would require certain NOx emissions that DP&L has 
been excluding from its computations to be included 
for purposes of complying with the emission targets 
and reporting requirements of the consent decree. 
DP&L believed that it was properly computing and 
reporting NOx emissions under the consent decree, but 
participated in settlement discussions with the Sierra 
Club. A proposed settlement was agreed to by both 
parties, approved by the Judge and then filed into the 
official record on July 13, 2010. The settlement amends 
the Consent Decree and sets forth a more detailed 
and clear methodology to compute NOx emissions 

during start-up and shut-down periods. There were 
no cash payments under the terms of this settlement. 
The revision is not expected to have a material effect 
on DP&L’s results of operations, financial condition or 
cash flows in the future.

Notices of Violation Involving Co-Owned Plants

In November 1999, the USEPA filed civil complaints 
and NOVs against operators and owners of certain 
generation facilities for alleged violations of the CAA. 
Generation units operated by Duke Energy (Beckjord 
Unit 6) and CSP (Conesville Unit 4) and co-owned by 
DP&L were referenced in these actions. Numerous 
northeast states have filed complaints or have indicated 
that they will be joining the USEPA’s action against 
Duke Energy and CSP. Although DP&L was not 
identified in the NOVs, civil complaints or state actions, 
the results of such proceedings could materially affect 
DP&L’s co-owned plants.

In June 2000, the USEPA issued a NOV to the 
DP&L-operated J.M. Stuart generating station (co-
owned by DP&L, Duke Energy, and CSP) for alleged 
violations of the CAA. The NOV contained allegations 
consistent with NOVs and complaints that the USEPA 
had recently brought against numerous other coal-
fired utilities in the Midwest. The NOV indicated the 
USEPA may: (1) issue an order requiring compliance 
with the requirements of the Ohio SIP; or (2) bring a 
civil action seeking injunctive relief and civil penalties 
of up to $27,500 per day for each violation. To date, 
neither action has been taken. DP&L cannot predict the 
outcome of this matter.

In December 2007, the Ohio EPA issued a NOV to 

the DP&L-operated Killen generating station (co-owned 
by DP&L and Duke Energy) for alleged violations of the 
CAA. The NOVs alleged deficiencies in the continuous 
monitoring of opacity. We submitted a compliance plan 
to the Ohio EPA on December 19, 2007. To date, no 
further actions have been taken by the Ohio EPA.

On March 13, 2008, Duke Energy, the operator of 

the Zimmer generating station, received a NOV and 
a Finding of Violation (FOV) from the USEPA alleging 
violations of the CAA, the Ohio State Implementation 
Program (SIP) and permits for the Station in areas 
including SO2, opacity and increased heat input. A 
second NOV and FOV with similar allegations was 
issued on November 4, 2010. DP&L is a co-owner of 
the Zimmer generating station and could be affected by 
the eventual resolution of these matters. Duke Energy 
Ohio Inc. is expected to act on behalf of itself and 
the co-owners with respect to these matters. DP&L is 
unable to predict the outcome of these matters.

128  DPL Inc.

Other Issues Involving Co-Owned Plants

In 2006, DP&L detected a malfunction with its 
emission monitoring system at the DP&L-operated 
Killen generating station (co-owned by DP&L and 
Duke Energy) and ultimately determined its SO2 and 
NOx emissions data were under reported. DP&L 
has petitioned the USEPA to accept an alternative 
methodology for calculating actual emissions for 2005 
and the first quarter of 2006. DP&L has sufficient 
allowances in its general account to cover the 
understatement. Management does not believe the 
ultimate resolution of this matter will have a material 
impact on results of operations, financial condition or 
cash flows.

Notices of Violation Involving Wholly-Owned Plants

In 2007, the Ohio EPA and the USEPA issued NOVs 
to DP&L for alleged violations of the CAA at the O.H. 
Hutchings Station. The NOVs’ alleged deficiencies 
relate to stack opacity and particulate emissions. 
Discussions are under way with the USEPA, the 
U.S. Department of Justice and Ohio EPA. DP&L 
has provided data to those agencies regarding its 
maintenance expenses and operating results. On 
December 15, 2008, DP&L received a request from 
the USEPA for additional documentation with respect 
to those issues and other CAA issues including issues 
relating to capital expenses and any changes in 
capacity or output of the units at the O.H. Hutchings 
Station. During 2009, DP&L continued to submit various 
other operational and performance data to the USEPA 
in compliance with its request. DP&L is currently 
unable to determine the timing, costs or method by 
which the issues may be resolved and continues to 
work with the USEPA on this issue.

On November 18, 2009, the USEPA issued a NOV 

to DP&L for alleged NSR violations of the CAA at the 
O.H. Hutchings Station relating to capital projects 
performed in 2001 involving Unit 3 and Unit 6. DP&L 
does not believe that the two projects described in 
the NOV were modifications subject to NSR. DP&L is 
unable to determine the timing, costs or method by 
which these issues may be resolved and continues to 
work with the USEPA on this issue.

Regulation Matters Related to Water Quality

Clean Water Act – Regulation of Water Intake

On July 9, 2004, the USEPA issued final rules pursuant 
to the Clean Water Act governing existing facilities that 
have cooling water intake structures. The rules require 
an assessment of impingement and/or entrainment of 
organisms as a result of cooling water withdrawal. A 

number of parties appealed the rules to the Federal 
Court of Appeals for the Second Circuit in New York 
and the Court issued an opinion on January 25, 2007 
remanding several aspects of the rule to the USEPA 
for reconsideration. Several parties petitioned the U.S. 
Supreme Court for review of the lower court decision. 
On April 14, 2008, the Supreme Court elected to review 
the lower court decision on the issue of whether the 
USEPA can compare costs with benefits in determining 
the best technology available for minimizing adverse 
environmental impact at cooling water intake structures. 
Briefs were submitted to the Court in the summer of 
2008 and oral arguments were held in December 2008. 
In April 2009, the U.S. Supreme Court ruled that the 
USEPA did have the authority to compare costs with 
benefits in determining best technology available. 
The USEPA is developing proposed regulations and 
anticipates proposing requirements by March 2011 with 
final rules in place by mid-2012.

Clean Water Act – Regulation of Water Discharge

On May 4, 2004, the Ohio EPA issued a final National 
Pollutant Discharge Elimination System permit (the 
Permit) for J.M. Stuart Station that continued our 
authority to discharge water from the station into the 
Ohio River. During the three-year term of the Permit, 
we conducted a thermal discharge study to evaluate 
the technical feasibility and economic reasonableness 
of water cooling methods other than cooling towers. 
In December 2006, we submitted an application for 
the renewal of the Permit that was due to expire on 
June 30, 2007. In July 2007, we received a draft permit 
proposing to continue our authority to discharge water 
from the station into the Ohio River. On February 5, 
2008, we received a letter from the Ohio EPA indicating 
that they intended to impose a compliance schedule 
as part of the final Permit, that requires us to implement 
one of two diffuser options for the discharge of water 
from the station into the Ohio River as identified in the 
thermal discharge study. Subsequently, representatives 
from DP&L and the Ohio EPA agreed to allow DP&L to 
restrict public access to the water discharge area as an 
alternative to installing one of the diffuser options. Ohio 
EPA issued a revised draft permit that was received on 
November 12, 2008. In December 2008, the USEPA 
requested that the Ohio EPA provide additional 
information regarding the thermal discharge in the draft 
permit. In June 2009, DP&L provided information to the 
USEPA in response to their request to the Ohio EPA. 
In September 2010, the USEPA formally objected to a 
revised Permit provided by Ohio EPA due to questions 
regarding the basis for the alternate thermal limitation. 

DPL Inc.  129

In December 2010, DP&L requested a public hearing 
on the objection, which USEPA has agreed to conduct. 
If a public hearing is held, it is anticipated that it would 
be scheduled in the second half of 2011. We are 
attempting to resolve this issue with both the USEPA 
and Ohio EPA. The timing for issuance of a final permit 
is uncertain.

In September 2009, the USEPA announced that it 
will be revising technology-based regulations governing 
water discharges from steam electric generating 
facilities. The rulemaking included the collection of 
information via an industry-wide questionnaire as well 
as targeted water sampling efforts at selected facilities. 
Subsequent to the information collection effort, it is 
anticipated that the USEPA will release a proposed rule 
by mid-2012 with a final regulation in place by early 
2014. At present, DP&L is unable to predict the impact 
this rulemaking will have on its operations.

Regulation Matters Related to Land Use and 
Solid Waste Disposal

Regulation of Waste Disposal

In September 2002, DP&L and other parties received 
a special notice that the USEPA considers us to be a 
PRP for the clean-up of hazardous substances at the 
South Dayton Dump landfill site. In August 2005, DP&L 
and other parties received a general notice regarding 
the performance of a Remedial Investigation and 
Feasibility Study (RI/FS) under a Superfund Alternative 
Approach. In October 2005, DP&L received a special 
notice letter inviting it to enter into negotiations with 
the USEPA to conduct the RI/FS. No recent activity 
has occurred with respect to that notice or PRP status. 
However, on August 25, 2009, the USEPA issued an 
Administrative Order requiring that access to DP&L’s 
service center building site, which is across the street 
from the landfill site, be given to the USEPA and the 
existing PRP group to help determine the extent of 
the landfill site’s contamination as well as to assess 
whether certain chemicals used at the service center 
building site might have migrated through groundwater 
to the landfill site. DP&L has granted such access and 
drilling of soil borings and installation of monitoring wells 
occurred in late 2009 and early 2010. DP&L believes the 
chemicals used at its service center building site were 
appropriately disposed of and have not contributed to 
the contamination at the South Dayton Dump landfill site. 
On May 24, 2010, three members of the existing PRP 
group, Hobart Corporation, Kelsey-Hayes Company and 
NCR Corporation, filed a civil complaint in the United 
States District Court for the Southern District of Ohio 
against DP&L and numerous other defendants alleging 

that DP&L and the other defendants contributed to the 
contamination at the South Dayton Dump landfill site 
and seeking reimbursement of the PRP group’s costs 
associated with the investigation and remediation of 
the site. DP&L filed a motion to dismiss the complaint 
and intends to vigorously defend against any claim 
that it has any financial responsibility to remediate 
conditions at the landfill site. On February 10, 2011, the 
Court dismissed claims against DP&L that related to 
allegations that chemicals used by DP&L at its service 
center contributed to the landfill site’s contamination. The 
Court, however, did not dismiss claims alleging financial 
responsibility for remediation costs based on hazardous 
substances from DP&L that were allegedly directly 
delivered by truck to the landfill. While DP&L is unable 
to predict the outcome of these matters, if DP&L were 
required to contribute to the clean-up of the site, it could 
have a material adverse effect on us.

In December 2003, DP&L and other parties 

received a special notice that the USEPA considers us 
to be a PRP for the clean-up of hazardous substances 
at the Tremont City landfill site. Information available 
to DP&L does not demonstrate that it contributed 
hazardous substances to the site. While DP&L is 
unable to predict the outcome of this matter, if DP&L 
were required to contribute to the clean-up of the site, it 
could have a material adverse effect on us.

On April 7, 2010, the USEPA published an Advance 

Notice of Proposed Rulemaking (ANPRM) announcing 
that it is reassessing existing regulations governing the 
use and distribution in commerce of polychlorinated 
biphenyls (PCB). While this reassessment is in the early 
stages and the USEPA is seeking information from 
potentially affected parties on how it should proceed, 
the outcome may have a material effect on DP&L. At 
present, DP&L is unable to predict the impact this 
initiative will have on its operations.

Regulation of Ash Ponds

During 2008, a major spill occurred at an ash pond 
owned by the Tennessee Valley Authority (TVA) as a 
result of a dike failure. The spill generated a significant 
amount of national news coverage, and support for 
tighter regulations for the storage and handling of coal 
combustion products. DP&L has ash ponds at the 
Killen, O.H. Hutchings and J.M. Stuart Stations which it 
operates, and also at generating stations operated by 
others but in which DP&L has an ownership interest.

During March 2009, the USEPA, through a formal 
Information Collection Request, collected information on 
ash pond facilities across the country, including those 
at Killen and J.M. Stuart Stations. Subsequently, the 

130  DPL Inc.

USEPA collected similar information for O.H. Hutchings 
Station. In October 2009, the USEPA conducted an 
inspection of the J.M. Stuart Station ash ponds. In 
March 2010, the USEPA issued a final report from the 
inspection including recommendations relative to the 
J.M. Stuart Station ash ponds. In May 2010, DP&L 
responded to the USEPA final inspection report with our 
plans to address the recommendations.

Similarly, in August 2010, the USEPA conducted 
an inspection of the O.H. Hutchings Station ash ponds. 
The draft report relating to the inspection was received 
in November 2010 and DP&L provided comments on 
the draft report in December 2010. DP&L is unable 
to predict the outcome this inspection will have on 
its operations.

In addition, as a result of the TVA ash pond spill, 

there has been increasing advocacy to regulate 
coal combustion byproducts under the Resource 
Conservation Recovery Act (RCRA). On June 21, 
2010, the USEPA published a proposed rule seeking 
comments on two options under consideration for 
the regulation of coal combustion products including 
regulating the material as a hazardous waste under 
RCRA Subtitle C or as a solid waste under RCRA 
Subtitle D. DP&L is unable to predict the financial 
impact of this regulation, but if coal combustion 
byproducts are regulated as hazardous waste, 
it is expected to have a material adverse impact 
on operations.

Legal and Other Matters

In February 2007, DP&L filed a lawsuit against a 
coal supplier seeking damages incurred due to the 
supplier’s failure to supply approximately 1.5 million 
tons of coal to two jointly owned plants under a 
coal supply agreement, of which approximately 
570 thousand tons was DP&L’s share. DP&L obtained 
replacement coal to meet its needs. The supplier has 
denied liability, and is currently in federal bankruptcy 
proceedings in which DP&L is participating as an 
unsecured creditor. DP&L is unable to determine 
the ultimate resolution of this matter. DP&L has not 
recorded any assets relating to possible recovery of 
costs in this lawsuit.

On May 16, 2007, DPL filed a claim with Energy 

Insurance Mutual (EIM) to recoup legal costs 
associated with our litigation against certain former 
executives. On February 15, 2010, after having 
engaged in both mediation and arbitration, DPL and 
EIM entered into a settlement agreement resolving 
all coverage issues and finalizing all obligations in 
connection with the claim, under which DPL received 
$3.4 million (net of associated expenses).

As a member of PJM, DP&L is also subject to 
charges and costs associated with PJM operations 
as approved by the FERC. FERC Orders issued in 
2007 and thereafter regarding the allocation of costs 
of large transmission facilities within PJM, could 
result in additional costs being allocated to DP&L of 
approximately $12 million or more annually by 2012. 
DP&L filed a notice of appeal to the U.S. Court of 
Appeals, D.C. Circuit which was consolidated with 
other appeals taken by other interested parties of 
the same FERC Orders and the consolidated cases 
were assigned to the 7th Circuit. On August 6, 2009, 
the 7th Circuit ruled that the FERC had failed to 
provide a reasoned basis for the allocation method 
it had approved. Rehearings were filed by other 
interested litigants and denied by the Court, which 
then remanded the matter to the FERC for further 
proceedings. On January 21, 2010, the FERC issued 
a procedural order on remand establishing a paper 
hearing process under which PJM will make an 
informational filing in late February. Subsequently 
PJM and other parties, including DP&L, filed initial 
comments, testimony, and recommendations and reply 
comments. FERC did not establish a deadline for its 
issuance of a substantive order and the matter is still 
pending. DP&L cannot predict the timing or the likely 
outcome of the proceeding. Until such time as FERC 
may act to approve a change in methodology, PJM 
will continue to apply the allocation methodology that 
had been approved by FERC in 2007. Although we 
continue to maintain that these costs should be borne 
by the beneficiaries of these projects and that DP&L 
is not one of these beneficiaries, any new credits or 
additional costs resulting from the ultimate outcome of 
this proceeding will be reflected in DP&L’s TCRR rider 
which already includes these costs.

In connection with DP&L and other utilities 
joining PJM, in 2006 the FERC ordered utilities to 
eliminate certain charges to implement transitional 
payments, known as SECA, effective December 1, 
2004 through March 31, 2006, subject to refund. 
Through this proceeding, DP&L was obligated to pay 
SECA charges to other utilities, but received a net 
benefit from these transitional payments. A hearing 
was held and an initial decision was issued in August 
2006. A final FERC order on this issue was issued 
on May 21, 2010 that substantially supports DP&L’s 
and other utilities’ position that SECA obligations 
should be paid by parties that used the transmission 
system during the timeframe stated above. DP&L, 
along with other transmission owners in PJM and the 
Midwest Independent System Operator (MISO) made 

DPL Inc.  131

a compliance filing at FERC on August 19, 2010 that 
fully demonstrated all payment obligations to and from 
all parties within PJM and the MISO. The FERC has 
made no ruling regarding the compliance filing and 
some parties have requested rehearing by FERC of 
its May 21, 2010 order. It is expected that any order 
on the compliance filing and any order regarding the 
rehearing request will be appealed for Court review. 
Prior to this final order being issued, DP&L entered into 
a significant number of bi-lateral settlement agreements 
with certain parties to resolve the matter, which by 
design will be unaffected by the final decision. Further, 
in October 2010, DP&L entered into another settlement 
agreement to settle a portion of SECA amounts still 
owed to DP&L. With respect to unsettled claims, DP&L 
management believes it has deferred as a regulatory 
liability the appropriate amounts that are subject to 
refund (see SECA net revenue subject to refund within 
Note 3 of Notes to Consolidated Financial Statements) 
and therefore the results of this proceeding are not 
expected to have a material adverse effect on DP&L’s 
results of operations.

NERC is a FERC-certified electric reliability 

organization responsible for developing and enforcing 
mandatory reliability standards including Critical 
Infrastructure Protection (CIP) reliability standards, 
across eight reliability regions. In June 2009, 
ReliabilityFirst Corporation (RFC), with responsibilities 
assigned to it by NERC over the reliability region 
that includes DP&L, commenced a routine audit of 
DP&L’s operations. The audit, which was for the 
period June 18, 2007 to June 25, 2009, evaluated 
DP&L’s compliance with 42 requirements in 18 NERC-
reliability standards. DP&L is currently subject to a 
compliance audit at a minimum of once every three 
years as provided by the NERC Rules of Procedure. 
This audit was concluded in June 2009 and its findings 
revealed that DP&L had some Possible Alleged 
Violations (PAVs) associated with five NERC Reliability 
requirements of various Standards. In response to 
the report, DP&L filed mitigation plans with RFC/
NERC to address the PAVs. These mitigation plans 
were accepted by RFC/NERC. In July 2010, DP&L 
negotiated a settlement with NERC wherein DP&L 
agreed to pay an immaterial amount in exchange for 
a resolution of all issues and obligations relating to the 
aforementioned PAVs. The settlement was approved on 
January 21, 2011 by the FERC.

17 Business Segments

During 2010, DPL began operating through two 
segments consisting of the operations of two of its 
wholly-owned subsidiaries, DP&L (Utility segment) and 
DPLER (Competitive Retail segment). Initiatives taken 
by state legislative bodies combined with changes 
in the market price of electricity have significantly 
impacted the manner in which electric utilities in 
certain parts of the United States, including Ohio, have 
traditionally conducted business. This has resulted 
in, among other things, a more competitive electricity 
marketplace. Accordingly, DPL increased its resources 
to participate in the more competitive retail electric 
service market. DPL believes that these reportable 
segments are consistent with how our management 
views its business and makes decisions on how to 
allocate resources and evaluate performance. Segment 
financial information for the periods 2009 and 2008 has 
been presented to conform to the 2010 disclosures, as 
required by GAAP.

The Utility segment is comprised of DP&L’s electric 

generation, transmission and distribution businesses 
which generate and sell electricity to residential, 
commercial, industrial and governmental customers. 
Electricity for the segment’s 24-county service area is 
primarily generated at eight coal-fired power plants and 
is distributed to more than 500,000 retail customers 
who are located in a 6,000 square mile area of West 
Central Ohio. DP&L also sells electricity to DPLER 
and any excess energy and capacity is sold into the 
wholesale market. DP&L’s transmission and distribution 
businesses are subject to rate regulation by federal and 
state regulators while rates for its generation business 
are deemed competitive under Ohio law.

The Competitive Retail segment is comprised of 
DPLER’s competitive retail electric service business 
which sells retail electric energy under contract 
primarily to commercial and industrial customers who 
have selected DPLER as their alternative electric 
supplier. The Competitive Retail segment sells 
electricity to approximately 9,000 customers currently 
located throughout Ohio. Due to increased competition 
in Ohio, during 2010 we increased the number of 
employees and resources assigned to manage 
DPLER and increased its marketing to customers. The 
Competitive Retail segment’s electric energy used 
to meet its sales obligations was purchased from 
DP&L. During 2010, we implemented a new wholesale 
agreement between DP&L and DPLER. Under this 
agreement, intercompany sales from DP&L to DPLER 
were based on the market prices for wholesale power. 

132  DPL Inc.

In periods prior to 2010, DPLER’s purchases from DP&L were transacted at prices that approximated DPLER’s sales 
prices to its end-use retail customers. The Competitive Retail segment has no transmission or generation assets.

Included within Other are other businesses that do not meet the GAAP requirements for disclosure as reportable 

segments as well as certain corporate costs which include interest expense on DPL’s debt.

Management evaluates segment performance based on gross margin. The accounting policies of the reportable 

segments are the same as those described in Note 1 – Overview and Summary of Significant Accounting Policies. 
Intersegment sales and profits are eliminated in consolidation.

The following table presents financial information for each of DPL’s reportable business segments:

$ in millions

Year Ended December 31, 2010
Revenues from external customers
Intersegment revenues

Total revenues

Purchased power

Gross margin

Depreciation and amortization
Interest expense
Income tax expense (benefit)
Net income (loss)

Total assets
Capital expenditures

Year Ended December 31, 2009
Revenues from external customers
Intersegment revenues

Total revenues

Purchased power

Gross margin

Depreciation and amortization
Interest expense
Income tax expense (benefit)
Net income (loss)

Total assets
Capital expenditures

Year Ended December 31, 2008
Revenues from external customers
Intersegment revenues

Total revenues

Purchased power

Gross margin

Depreciation and amortization
Interest expense
Income tax expense (benefit)
Net income (loss)

Total assets
Capital expenditures

Utility

Competitive 
Retail

Adjustments 
and 
Eliminations

DPL 
Consolidated

$ 277.0
–

$ 277.0

238.5

$

–
(243.0)

$ (243.0)

(238.5)

$

$

$

$

$

$

$

$

Other

54.1
4.5

58.6

3.9

42.7

8.5
33.5
(2.7)
(3.5)

302.2
3.2

37.8
3.8

41.6

1.0

33.7

9.9
44.5
(11.2)
(21.4)

177.7
1.3

28.5
6.4

34.9

0.1

23.1

9.7
54.2
(17.9)
(37.6)

225.8
2.4

38.5

0.2
–
10.5
18.8

35.7
–

65.5
–

65.5

64.8

0.7

0.1
–
(0.8)
(2.7)

6.6
–

$ 150.8
–

$ 150.8

150.6

0.2

0.2
–
0.6
1.9

13.5
–

$ 1,485.6
64.8

$ 1,550.4

$

$

$ 1,552.0
238.5

$ 1,790.5

383.5

1,035.1

130.7
37.1
135.2
277.7

3,475.4
148.2

259.2

967.6

135.5
38.5
124.5
258.9

3,457.4
144.0

$ 1,422.3
150.6

$ 1,572.9

379.9

961.6

127.8
36.5
120.2
285.8

3,397.7
225.4

$

$

(4.5)

–
–
–
(2.7)

–
–

–
(68.6)

(68.6)

(64.8)

(3.7)

–
–
–
(5.7)

–
–

$

–
(157.0)

$ (157.0)

(153.3)

(3.7)

–
–
–
(5.6)

–
–

1,883.1
–

1,883.1

387.4

1,111.8

139.4
70.6
143.0
290.3

3,813.3
151.4

$

$

1,588.9
–

1,588.9

260.2

998.3

145.5
83.0
112.5
229.1

3,641.7
145.3

$

$

1,601.6
–

1,601.6

377.3

981.2

137.7
90.7
102.9
244.5

3,637.0
227.8

DPL Inc.  133

18 Subsequent Events

Contingent Redemption of DPL-Capital Trust II Securities

On January 26, 2011, DPL signed an agreement with a third party to acquire $122.1 million of outstanding DPL 
Capital Trust II 8.125% trust preferred securities. The sale to DPL is contingent upon the third party’s ability to 
acquire the trust preferred securities.

In the event the third party is successful in acquiring the trust preferred securities, it has agreed to sell the trust 
preferred securities to DPL for a price of $134.3 million, plus any interest accrued through the date of closing. The 
closing is expected to occur on or before February 25, 2011. If this transaction closes, DPL expects to record a net 
loss on the reacquisition of the securities in the amount of approximately $15.3 million ($10.2 million net of tax) in 
the first quarter of 2011. Interest savings from the redemption of these securities are expected to be approximately 
$8.4 million ($5.6 million net of tax) for the remainder of 2011. DPL expects to finance this transaction using a 
combination of cash on hand and proceeds from the intended sale of some of its short-term investments.

In the event the third party is not able to acquire these securities, DPL will have no obligation to purchase these 

securities and will continue to carry these trust preferred securities as a long-term obligation on its Consolidated 
Balance Sheets.

19 Selected Quarterly Information (Unaudited)

DPL

$ in millions except per share amount 
and common stock market price

March 31,

June 30,

September 30,

December 31,

2010

2009

2010

2009

2010

2009

2010

2009

Revenues
Operating income

Net income

$ 451.2 $ 415.0 $ 445.5 $ 361.2 $ 516.9 $ 407.3 $ 469.5 $ 405.4
81.9 $ 144.6 $ 116.5 $ 124.5 $ 102.8
$ 126.0 $ 127.0 $ 109.3 $

$

71.0 $

69.2 $

61.4 $

42.1 $

86.4 $

67.9 $

71.5 $

49.9

For the three months ended

Earnings per share of common stock:

Basic
Diluted

$
$

0.61 $
0.61 $

0.62 $
0.61 $

0.53 $
0.53 $

0.38 $
0.37 $

0.75 $
0.74 $

0.60 $
0.59 $

0.62 $
0.62 $

0.43
0.43

$ 0.3025 $ 0.2850 $ 0.3025 $ 0.2850 $ 0.3025 $ 0.2850 $ 0.3025 $ 0.2850

$ 28.47 $ 23.28 $ 28.18 $ 23.46 $ 26.65 $ 26.53 $ 27.51 $ 28.68
$ 26.51 $ 19.27 $ 23.80 $ 21.18 $ 23.95 $ 22.79 $ 25.33 $ 25.16

For the three months ended

March 31,

June 30,

September 30,

December 31,

2010

2009

2010

2009

2010

2009

2010

2009

$ 438.0 $ 403.6 $ 423.9 $ 351.9 $ 487.0 $ 398.2 $ 441.6 $ 396.7
78.9 $ 131.9 $ 115.2 $ 102.9 $ 103.0
$ 118.4 $ 124.8 $
46.8 $
77.0 $
$
61.1
46.6 $
76.8 $

97.0 $
59.4 $
59.2 $

74.0 $
73.8 $

83.2 $
83.0 $

63.0 $
62.7 $

72.1 $
71.9 $

60.8

$

$

90.0 $ 175.0 $

60.0 $

45.0 $

– $

50.0 $ 150.0 $

55.0

Dividends declared and 
paid per share

Common stock market price

- High
- Low

DP&L

$ in millions

Revenues
Operating income

Net income

Earnings on common stock

Dividends paid on  

common stock to parent

134  DPL Inc.

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders 
DPL Inc.:

We have audited the accompanying Consolidated Balance Sheets of DPL Inc. and subsidiaries (the Company) as 
of December 31, 2010 and 2009, and the related Consolidated Statements of Results of Operations, Shareholders’ 
Equity and Cash Flows for each of the years in the three-year period ended December 31, 2010. In connection with 
our audits of the consolidated financial statements, we have audited the consolidated financial statement schedule, 
“Schedule II – Valuation and Qualifying Accounts.” We also have audited the Company’s internal control over financial 
reporting as of December 31, 2010, based on criteria established in Internal Control – Integrated Framework issued 
by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s management 
is responsible for these consolidated financial statements, the financial statement schedule, 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 Report on Internal Control Over Financial Reporting. Our 
responsibility is to express an opinion on these consolidated financial statements, the financial statement schedule, 
and an opinion on the Company’s internal control over financial reporting based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight 
Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance 
about whether the financial statements are free of material misstatement and whether effective internal control 
over financial reporting was maintained in all material respects. Our audits of the consolidated financial statements 
included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, 
assessing the accounting principles used and significant estimates made by management, and evaluating the 
overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an 
understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and 
testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our 
audits also included performing such other procedures as we considered necessary in the circumstances. We 
believe that our audits provide a reasonable basis for our opinions.

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.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, 

the financial position of the Company as of December 31, 2010 and 2009, and the results of its operations and 
its cash flows for each of the years in the three-year period ended December 31, 2010, in conformity with U.S. 
generally accepted accounting principles, and the related financial statement schedule, when considered in relation 
to the basic financial statements taken as a whole, presents fairly, in all material respects, the information set forth 
therein. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial 
reporting as of December 31, 2010, based on criteria established in Internal Control – Integrated Framework issued 
by the Committee of Sponsoring Organizations of the Treadway Commission.

/s/ KPMG LLP 
Philadelphia, Pennsylvania

February 17, 2011 

DPL Inc.  135

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholder  
The Dayton Power and Light Company:

We have audited the accompanying Balance Sheets of The Dayton Power and Light Company (DP&L) as of 
December 31, 2010 and 2009, and the related Statements of Results of Operations, Shareholder’s Equity and Cash 
Flows for each of the years in the three-year period ended December 31, 2010. In connection with our audits of the 
financial statements, we also have audited the financial statement schedule, “Schedule II – Valuation and Qualifying 
Accounts.” These financial statements and the financial statement schedule are the responsibility of DP&L’s 
management. Our responsibility is to express an opinion on these financial statements and the financial statement 
schedule based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board 
(United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about 
whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, 
evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing 
the accounting principles used and significant estimates made by management, as well as evaluating the overall 
financial statement presentation. We believe that our audits provide a reasonable basis for our opinions.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial 
position of DP&L as of December 31, 2010 and 2009, and the results of its operations and its cash flows for each of 
the years in the three-year period ended December 31, 2010, in conformity with U.S. generally accepted accounting 
principles. Also in our opinion, the related financial statement schedule, when considered in relation to the basic 
financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein.

/s/ KPMG LLP 
Philadelphia, Pennsylvania

February 17, 2011 

136  DPL Inc.

Item 9 Changes in and Disagreements 
with Accountants on Accounting and Financial Disclosure

None. 

Item 9A Controls and Procedures 

Disclosure Controls and Procedures

Our Chief Executive Officer (CEO) and Chief Financial Officer (CFO) are responsible for establishing and 
maintaining our disclosure controls and procedures. These controls and procedures were designed to ensure that 
material information relating to us and our subsidiaries are communicated to the CEO and CFO. We evaluated these 
disclosure controls and procedures as of the end of the period covered by this report with the participation of our 
CEO and CFO. Based on this evaluation, our CEO and CFO concluded that our disclosure controls and procedures 
are effective: (i) to ensure that information required to be disclosed by us in the reports that we file or submit under 
the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s 
rules and forms; and (ii) to ensure that information required to be disclosed by us in the reports that we submit 
under the Exchange Act is accumulated and communicated to our management, including our principal executive 
and principal financial officers, or persons performing similar functions, as appropriate, to allow timely decisions 
regarding required disclosure.

There was no change in our internal control over financial reporting during the most recently completed fiscal 
period that has materially affected, or is reasonably likely to materially affect, internal control over financial reporting.

The following report is our report on internal control over financial reporting as of December 31, 2010.

Management’s Report on Internal Control over Financial Reporting 

We are responsible for establishing and maintaining adequate internal control over financial reporting, as such 
term is defined in Exchange Act Rule 13a-15(f). Under the supervision and with the participation of management, 
including the CEO and CFO, we conducted an evaluation of the effectiveness of our internal control over 
financial reporting based on the framework in Internal Control - Integrated Framework issued by the Committee of 
Sponsoring Organizations of the Treadway Commission. Based on an evaluation under the framework in Internal 
Control - Integrated Framework, we concluded that our internal control over financial reporting was effective as of 
December 31, 2010. 

Our internal control over financial reporting as of December 31, 2010, has been audited by KPMG LLP, the 
independent registered public accounting firm that audited the financial statements contained herein, as stated in 
their report which is included herein. 

Item 9B Other Information 

None. 

DPL Inc.  137

 
Part III

Item 10 Directors, Executive Officers and 
Corporate Governance 

Item 13 Certain Relationships and Related 
Transactions, and Director Independence

The information required to be furnished pursuant 
to this item with respect to Directors and Executive 
Officers of DPL will be set forth under the captions 
“Election of Directors” and “Executive Officers” in 
DPL’s proxy statement (the Proxy Statement) to be 
furnished to shareholders in connection with the 
solicitation of proxies by our Board of Directors for 
use at the 2011 Annual Meeting of Shareholders to be 
held on April 27, 2011 and is incorporated herein by 
reference. 

The information required to be furnished pursuant 

to this item for DPL with respect to Section 16(a) 
Beneficial Ownership Reporting Compliance, the Audit 
Committee, the Audit Committee financial expert and 
the registrant’s code of ethics will be set forth under 
in the “Corporate Governance” section in the Proxy 
Statement and is incorporated herein by reference.

Item 11 Executive Compensation

The information required to be furnished pursuant to 
this item for DPL will be set forth under the captions 
“Executive Compensation,” “Compensation Discussion 
and Analysis (CD&A)” and “Compensation Committee 
Report on Executive Compensation” in the Proxy 
Statement and is incorporated herein by reference. 

Item 12 Security Ownership of Certain 
Beneficial Owners and Management and 
Related Shareholder Matters

The information required to be furnished pursuant to 
this item for DPL will be set forth under the captions 
“Security Ownership of Certain Beneficial Owners,” 
“Security Ownership of Management” and “Equity 
Compensation Plan Information” in the Proxy Statement 
and is incorporated herein by reference. 

The information required to be furnished pursuant to 
this item for DPL will be set forth under the caption 
“Related Person Transactions” and “Independence” 
in the Proxy Statement and is incorporated herein 
by reference.

Item 14 Principal Accountant Fees and 
Services

The information required to be furnished pursuant to 
this item for DPL will be set forth under the caption 
“Audit and Non-Audit Fees” in the Proxy Statement and 
is incorporated herein by reference. 

Accountant Fees and Services

The following table presents the aggregate fees billed 
for professional services rendered to DPL and DP&L 
by KPMG LLP for 2010 and 2009. Other than as set 
forth below, no professional services were rendered or 
fees billed by KPMG LLP during 2010 and 2009.

KPMG LLP

2010 Fees Billed

2009 Fees Billed

Audit Fees (1)
Audit-Related Fees (2)
Tax Fees (3)
All Other Fees (4)
Total

$ 1,269,200
40,000
930
15,000
$ 1,325,130

$ 1,394,680
46,000
7,870 
– 
$ 1,448,550

(1) Audit fees relate to professional services rendered for the audit 
of our annual financial statements and the reviews of our quarterly 
financial statements.

(2) Audit-related fees relate to services rendered to us for assurance and 
related services.

(3) Tax fees consisted principally of tax compliance services. Tax 
compliance services are services rendered based upon facts already 
in existence or transactions that have already occurred to document, 
compute, and obtain government approval for amounts to be included 
in tax filings.

(4) Other fees relate to services rendered under an agreed upon 
procedure engagement related to environmental studies.

138  DPL Inc.

Part IV

Item 15 Exhibits and Financial Statement Schedules 

(a) The following documents are filed as part of this report:

1. Financial Statements

Page No.

DPL – Consolidated Statements of Results of Operations 
for each of the three years in the period ended December 31, 2010

DPL – Consolidated Statements of Cash Flows 
for each of the three years in the period ended December 31, 2010

DPL – Consolidated Balance Sheets at December 31, 2010 and 2009

DPL – Consolidated Statement of Shareholders’ Equity 
for each of the three years in the period ended December 31, 2010

DP&L – Consolidated Statements of Results of Operations 
for each of the three years in the period ended December 31, 2010

DP&L – Consolidated Statements of Cash Flows 
for each of the three years in the period ended December 31, 2010

DP&L – Consolidated Balance Sheets at December 31, 2010 and 2009

DP&L – Consolidated Statement of Shareholder’s Equity 
for each of the three years in the period ended December 31, 2010

Notes to Consolidated Financial Statements

DPL – Report of Independent Registered Public Accounting Firm

DP&L – Report of Independent Registered Public Accounting Firm

2. Financial Statements Schedule

For each of the three years in the period ended December 31, 2010: 
Schedule II – Valuation and Qualifying Accounts

The information required to be submitted in Schedules I, III, IV and V is omitted as not  
applicable or not required under rules of Regulation S-X.

67

68

69

70

71

72

73

74

75

135

136

148

DPL Inc.  139

3. Exhibits

DPL and DP&L exhibits are incorporated by reference as described unless otherwise filed as set forth herein.

The exhibits filed as part of DPL’s and DP&L’s Annual Report on Form 10-K, respectively, are:

DPL Inc. DP&L

✔

✔

Exhibit 
Number

  3(a)

Exhibit

Amended Articles of Incorporation of DPL Inc., 
as of September 25, 2001

  3(b)

Amended Regulations of DPL Inc., as of 
April 27, 2007

✔   3(c)

Amended Articles of Incorporation of The Dayton 
Power and Light Company, as of January 4, 1991

✔   3(d)

Regulations of The Dayton Power and Light Company, 
as of April 9, 1981

Location (1)

Exhibit 3 to Report on 
Form 10-K/A for the year 
ended December 31, 2001 
(File No. 1-9052)

Exhibit 3(b) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 3(b) to Report on 
Form 10-K/A for the year 
ended December 31, 1991 
(File No. 1-2385)

Exhibit 3(a) to Report on 
Form 8-K filed on 
May 3, 2004 (File No. 1-2385)

✔

✔   4(a)

Composite Indenture dated as of October 1, 1935, 
between The Dayton Power and Light Company and 
Irving Trust Company, Trustee with all amendments 
through the Twenty-Ninth Supplemental Indenture

Exhibit 4(a) to Report on 
Form 10-K for the year 
ended December 31, 1985 
(File No. 1-2385)

✔

✔   4(b)

Forty-First Supplemental Indenture dated as of 
February 1, 1999, between The Dayton Power and 
Light Company and The Bank of New York, Trustee

✔

✔   4(c)

Forty-Second Supplemental Indenture dated as of 
September 1, 2003, between The Dayton Power and 
Light Company and The Bank of New York, Trustee

✔

✔   4(d)

Forty-Third Supplemental Indenture dated as of 
August 1, 2005, between The Dayton Power and 
Light Company and The Bank of New York, Trustee

✔

✔   4(e)

Rights Agreement dated September 25, 2001 between 
DPL Inc. and Equiserve Trust Company, N.A.

Exhibit 4(m) to Report on 
Form 10-K for the year 
ended December 31, 1998 
(File No. 1-2385)

Exhibit 4(r) to Report on 
Form 10-K for the year 
ended December 31, 2003 
(File No. 1-9052)

Exhibit 4.4 to Report on 
Form 8-K filed 
August 24, 2005 
(File No. 1-2385)

Exhibit 4 to Report on 
Form 8-K filed 
September 28, 2001 
(File No. 1-9052)

✔

✔

4(f)

4(g)

Securities Purchase Agreement dated 
as of February 1, 2000 by and among DPL Inc., and 
DPL Capital Trust I, Dayton Ventures LLC and 
Dayton Ventures, Inc. and certain exhibits thereto

Exhibit 99(b) to 
Schedule TO-I filed 
February 4, 2000 
(File No. 1-9052)

Amendment to Securities Purchase Agreement dated 
as of February 24, 2000 among DPL Inc., DPL Capital 
Trust I, Dayton Ventures LLC and Dayton Ventures, Inc.

Exhibit 4(g) to Report on 
Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

140  DPL Inc.

✔

✔

✔

✔

✔

✔

✔

✔

✔

✔

✔

4(i)

4(j)

4(k)

4(l)

  4(m)

  4(n)

  4(o)

  4(p)

  4(q)

  4(r)

✔   4(s)

DPL Inc. DP&L

Exhibit 
Number

  4(h)

Exhibit

Form of Warrant to Purchase Common Shares 
of DPL Inc.

Securityholders and Registration Rights Agreement 
dated as of March 13, 2000 among DPL Inc., 
DPL Capital Trust I, Dayton Ventures LLC and 
Dayton Ventures, Inc.

Amendment to Securityholders and Registration 
Rights Agreement, dated August 24, 2001 among 
DPL Inc., DPL Capital Trust I, Dayton Ventures LLC 
and Dayton Ventures, Inc.

Amendment to Securityholders and Registration 
Rights Agreement, dated December 6, 2004 among 
DPL Inc., DPL Capital Trust I, Dayton Ventures LLC 
and Dayton Ventures, Inc.

Amendment to Securityholders and Registration 
Rights Agreement, dated as of January 12, 2005 
among DPL Inc., DPL Capital Trust I, Dayton 
Ventures LLC and Dayton Ventures, Inc.

Location (1)

Exhibit 4(h) to Report on 
Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 4(i) to Report on 
Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 4(j) to Report on 
Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 4(k) to Report on 
Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 4(j) to Report on 
Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Indenture dated as of March 1, 2000 between DPL Inc. 
and Bank One Trust Company, National Association

Exhibit 4(b) to Registration 
Statement No. 333-37972

Exchange and Registration Rights Agreement 
dated as of August 24, 2001 between DPL Inc., 
Morgan Stanley & Co. Incorporated, Bank One 
Capital Markets, Inc., Fleet Securities, Inc. and 
NatCity Investments, Inc.

Exhibit 4(a) to Registration 
Statement No. 333-74568

Officer’s Certificate of DPL Inc. establishing exchange 
notes, dated August 31, 2001

Exhibit 4(c) to Registration 
Statement No. 333-74568

Indenture dated as of August 31, 2001 between 
DPL Inc. and The Bank of New York, Trustee

First Supplemental Indenture dated as of 
August 31, 2001 between DPL Inc. and 
The Bank of New York, as Trustee

Amended and Restated Trust Agreement dated 
as of August 31, 2001 among DPL Inc., The Bank of 
New York, The Bank of New York (Delaware), the 
administrative trustees named therein, and several 
Holders as defined therein

Forty-Fourth Supplemental Indenture dated as of 
September 1, 2006 between the Bank of New York, 
Trustee and The Dayton Power and Light Company

✔

  4(t)

Exchange and Registration Rights Agreement dated 
as of August 24, 2001 among DPL Inc., DPL Capital 
Trust II and Morgan Stanley & Co. Incorporated

Exhibit 4(a) to Registration 
Statement No. 333-74630

Exhibit 4(b) to Registration 
Statement No. 333-74630

Exhibit 4(c) to Registration 
Statement No. 333-74630

Exhibit 4(s) to Report on 
Form 10-K for the year 
ended December 31, 2009 
(File No. 1-2385)

Exhibit 4(d) to Registration 
Statement No. 333-74630

DPL Inc.  141

DPL Inc. DP&L

Exhibit 
Number

Exhibit

✔

✔   4(u)

✔

✔   10(a)*

Forty-Sixth Supplemental Indenture dated as of 
December 1, 2008 between The Bank of New York 
Mellon, Trustee and The Dayton Power and 
Light Company

The Dayton Power and Light Company Directors’ 
Deferred Stock Compensation Plan, as amended 
through December 31, 2000

✔

✔   10(b)*

The Dayton Power and Light Company 1991 
Amended Directors’ Deferred Compensation Plan, as 
amended and restated through December 31, 2007

✔

✔   10(c)*

The Dayton Power and Light Company Management 
Stock Incentive Plan as amended and restated 
through December 31, 2007

✔

✔   10(d)*

The Dayton Power and Light Company Key 
Employees Deferred Compensation Plan, as 
amended through December 31, 2000

✔

✔   10(e)*

✔

✔   10(f)*

✔

✔   10(g)*

Amendment No. 1 to The Dayton Power and Light 
Company Key Employees Deferred Compensation 
Plan, as amended through December 31, 2000, 
dated as of December 7, 2004

The Dayton Power and Light Company 
Supplemental Executive Retirement Plan, as 
amended February 1, 2000

Amendment No. 1 to The Dayton Power and Light 
Company Supplemental Executive Retirement Plan, 
as amended through February 1, 2000 and dated 
as of December 7, 2004

✔

✔

  10(h)*

DPL Inc. Stock Option Plan

  10(i)*

2003 Long-Term Incentive Plan of DPL Inc.

✔

✔   10(j)*

Summary of Executive Medical Insurance Plan

✔

  10(k)*

DPL Inc. Executive Incentive Compensation Plan, 
as amended and restated through December 31, 2007

Location (1)

Exhibit 4(x) to Report on 
Form 10-K for the year 
ended December 31, 2008 
(File No. 1-2385)

Exhibit 10(a) to Report on 
Form 10-K for the year 
ended December 31, 2000 
(File No. 1-9052)

Exhibit 10(b) to Report 
on Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(c) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(d) to Report 
on Form 10-K for the year 
ended December 31, 2000 
(File No. 1-9052)

Exhibit 10(g) to Report 
on Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 10(f) to Report on 
Form 10-K for the year 
ended December 31, 2009 
(File No. 1-9052)

Exhibit 10(i) to Report on 
Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 10(f) to Report on 
Form 10-K for the year 
ended December 31, 2000 
(File No. 1-9052)

Exhibit 10(aa) to Report 
on Form 10-K for the year 
ended December 31, 2003 
(File No. 1-9052)

Exhibit 10(m) to Report 
on Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 10(l) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

142  DPL Inc.

DPL Inc. DP&L

✔

✔

✔

✔

✔

✔

Exhibit 
Number

  10(l)*

Exhibit

DPL Inc. 2006 Equity and Performance  
Incentive Plan as amended and restated through 
December 31, 2007

  10(m)*

Form of DPL Inc. Amended and Restated 
Long-Term Incentive Plan – Performance 
Shares Agreement

  10(n)*

  10(o)*

  10(p)*

DPL Inc. Severance Pay and Change of  
Control Plan, as amended and restated through 
December 31, 2007

DPL Inc. Supplemental Executive Defined 
Contribution Retirement Plan, as amended and 
restated through December 31, 2007

DPL Inc. 2006 Deferred Compensation Plan 
For Executives, as amended and restated 
through December 31, 2007

  10(q)*

DPL Inc. Pension Restoration Plan, as amended 
and restated through December 31, 2007

✔

✔   10(r)*

Participation Agreement dated August 2, 2007 
among DPL Inc., The Dayton Power and Light 
Company and Teresa F. Marrinan

✔

✔   10(s)*

Participation Agreement dated March 27, 2007 
among DPL Inc., The Dayton Power and Light 
Company and Scott J. Kelly

✔

✔   10(t)*

✔

✔   10(u)*

Participation Agreement and Waiver dated 
February 27, 2006 among DPL Inc., 
The Dayton Power and Light Company and 
Gary G. Stephenson

Participation Agreement dated January 13, 2007 
among DPL Inc., The Dayton Power and Light 
Company and Daniel J. McCabe

✔

  10(v)*

Management Stock Option Agreement dated 
as of January 1, 2001 between DPL Inc. 
and Arthur G. Meyer

✔

✔   10(w)*

Participation Agreement and Waiver dated 
March 6, 2006 among DPL Inc., The Dayton Power 
and Light Company and Arthur G. Meyer, 
dated March 6, 2006

Location (1)

Exhibit 10(m) to Report 
on Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(n) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(o) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(p) to Report 
on Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(q) to Report 
on Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(r) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(s) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(t) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(u) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(x) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(cc) to Report 
on Form 10-K for the year 
ended December 31, 2005 
(File No. 1-9052)

Exhibit 10(w) to Report 
on Form 10-K for the year 
ended December 31, 2009 
(File No. 1-9052)

DPL Inc.  143

DPL Inc. DP&L

Exhibit 
Number

Exhibit

✔   10(x)*

✔   10(y)*

Participation Agreement dated September 8, 2006 
among DPL Inc., The Dayton Power and Light 
Company and Paul M. Barbas

Participation Agreement dated June 30, 2006 
among DPL Inc., The Dayton Power and Light 
Company and Frederick J. Boyle

  10(z)*

Letter Agreement between DPL Inc. and 
Glenn E. Harder, dated June 20, 2006

✔

✔

✔

✔

Location (1)

Exhibit 10.2 to Form 8-K 
filed September 8, 2006 
(File No. 1-9052)

Exhibit 10.1 to Form 8-K 
filed July 3, 2006 
(File No. 1-9052)

Exhibit 10.1 to Form 8-K  
filed June 21, 2006 
(File No. 1-9052)

✔   10(aa)

Credit Agreement, dated as of November 21, 2006 
among The Dayton Power and Light Company, 
KeyBank National Association and certain lending 
institutions, and Amendment No. 1 to Credit Agreement, 
dated as of April 9, 2009

Exhibit 10(aa) to Report 
on Form 10-K for the year 
ended December 31, 2009 
(File No. 1-2385)

✔

✔    10(bb) Credit Agreement, dated as of April 21, 2009 

✔

✔

by and among The Dayton Power and Light Company 
and the lenders party thereto and PNC Bank, 
National Association

  10(cc)*

Form of DPL Inc. Amended and Restated 
Non-Employee Director Restricted Stock Units 
Agreement

  10(dd)* DPL Inc. 2006 Deferred Compensation Plan for 

Non-Employee Directors, as amended and restated 
through December 31, 2007

✔

✔   10(ee)*

Separation Agreement dated as of 
September 17, 2010, by and between DPL Inc. and 
The Dayton Power and Light Company and 
Douglas C. Taylor

✔

✔

✔

  10(ff)*

Restricted Stock Agreement dated May 6, 2008 
by and between DPL Inc. and Paul M. Barbas

   10(gg)* Form of DPL Inc. Restricted Stock Agreement

  10(hh)*

Form of DPL Inc. 2009 Career Grant and 
Matching Restricted Stock Agreement 

✔

✔    10(ii)*

Participation Agreement dated May 18, 2009, 
among DPL Inc., The Dayton Power and Light 
Company and Joseph W. Mulpas 

Exhibit 10.1 to Form 8-K 
filed October 8, 2009 
(File No. 1-2385)

Exhibit 10(uu) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(vv) to Report on 
Form 10-K for the year 
ended December 31, 2007 
(File No. 1-9052)

Exhibit 10(a) to Form 10-Q 
for the quarter ended 
September 30, 2010 
(File No. 1-9052)

Exhibit 99.1 to Form 8-K 
filed May 8, 2008 
(File No. 1-9052)

Exhibit 10(d) to Report on 
Form 10-Q for the quarter 
ended June 30, 2009 
(File No. 1-9052)

Exhibit 10(b) to Report on 
Form 10-Q for the quarter 
ended September 30, 2009 
(File No. 1-9052) 

Exhibit 10(c) to Report on 
Form 10-Q for the quarter 
ended June 30, 2009 
(File No. 1-9052)

144  DPL Inc.

DPL Inc. DP&L

Exhibit 
Number

Exhibit

✔

✔   10(jj)*

✔

✔   10(kk)*

Credit Agreement, dated as of April 20, 2010, 
among the Dayton Power and Light Company, 
Bank of America, N.A., as Administrative Agent and an 
L/C Issuer, PNC Capital Markets, LLC and U.S. Bank, 
National Association, as Co-Syndication Agents, and 
the other lenders party to the Credit Agreement

Participation Agreement dated May 14, 2010, 
among DPL Inc., The Dayton Power and 
Light Company and Bryce W. Nickel

✔

✔   10(ll)*

Participation Agreement dated May 14, 2010, 
among DPL Inc., The Dayton Power and 
Light Company and Kevin W. Crawford

Location (1)

Exhibit 10.1 to Form 8-K 
filed April 22, 2010 
(File No. 1-2385)

Exhibit 10(b) to Report on 
Form 10-Q for the quarter 
ended June 30, 2010 
(File No. 1-9052)

Exhibit 10(c) to Report on 
Form 10-Q for the quarter 
ended June 30, 2010 
(File No. 1-9052)

Filed herewith as 
Exhibit 10(mm)

✔

✔

✔

✔

✔

✔

✔

✔

✔

✔

✔   10(mm)* Participation Agreement dated February 3, 2011, 

among DPL Inc., The Dayton Power and 
Light Company and Craig L. Jackson

✔   21

List of Subsidiaries of DPL Inc. and The Dayton 
Power and Light Company

Filed herewith as Exhibit 21

  23(a)

Consent of KPMG LLP

  31(a)

  31(b)

✔   31(c)

✔   31(d)

  32(a)

  32(b)

✔   32(c)

✔   32(d)

Certification of Chief Executive Officer pursuant to 
Section 302 of the Sarbanes-Oxley Act of 2002

Certification of Chief Financial Officer pursuant to 
Section 302 of the Sarbanes-Oxley Act of 2002

Certification of Chief Executive Officer pursuant to 
Section 302 of the Sarbanes-Oxley Act of 2002

Certification of Chief Financial Officer pursuant to 
Section 302 of the Sarbanes-Oxley Act of 2002

Certification of Chief Executive Officer pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002

Certification of Chief Financial Officer pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002

Certification of Chief Executive Officer pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002

Certification of Chief Financial Officer pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002

✔

✔

✔

101.INS XBRL Instance

101.SCH XBRL Taxonomy Extension Schema

101.CAL XBRL Taxonomy Extension Calculation Linkbase

Filed herewith as 
Exhibit 23(a)

Filed herewith as 
Exhibit 31(a)

Filed herewith as 
Exhibit 31(b)

Filed herewith as 
Exhibit 31(c)

Filed herewith as 
Exhibit 31(d)

Filed herewith as 
Exhibit 32(a)

Filed herewith as 
Exhibit 32(b)

Filed herewith as 
Exhibit 32(c)

Filed herewith as 
Exhibit 32(d)

Furnished herewith as 
Exhibit 101.INS

Furnished herewith as 
Exhibit 101.SCH

Furnished herewith as 
Exhibit 101.CAL

DPL Inc.  145

DPL Inc. DP&L

Exhibit 
Number

Exhibit

✔

✔

✔

✔

✔

✔

101.DEF XBRL Taxonomy Extension Definition Linkbase

101.LAB XBRL Taxonomy Extension Label Linkbase

101.PRE XBRL Taxonomy Extension Presentation Linkbase

Location (1)

Furnished herewith as 
Exhibit 101.DEF

Furnished herewith as 
Exhibit 101.LAB

Furnished herewith as 
Exhibit 101.PRE

*

Management contract or compensatory plan

Exhibits referencing File No. 1-9052 have been filed by DPL Inc. and those referencing File No. 1-2385 have been filed by 
The Dayton Power and Light Company.

Pursuant to paragraph (b) (4) (iii) (A) of Item 601 of Regulation S-K, we have not filed as an exhibit to this Form 10-K 
certain instruments with respect to long-term debt if the total amount of securities authorized thereunder does not 
exceed 10% of the total assets of us and our subsidiaries on a consolidated basis, but we hereby agree to furnish to 
the SEC on request any such instruments.

146  DPL Inc.

Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, 
DPL Inc. and The Dayton Power and Light Company has duly caused this report to be signed 
on their behalf by the undersigned, thereunto duly authorized.

February 17, 2011

By:

February 17, 2011

By:

DPL Inc.

 /s/ Paul M. Barbas
Paul M. Barbas 
President and Chief Executive Officer 
(principal executive officer)

The Dayton Power and Light Company

 /s/ Paul M. Barbas
Paul M. Barbas 
President and Chief Executive Officer 
(principal executive officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the 
following persons on behalf of DPL Inc. and The Dayton Power and Light Company and in the capacities and on 
the dates indicated.

/s/ P.M. Barbas
(P.M. Barbas)

/s/ R.D. Biggs
(R.D. Biggs)

/s/ P.R. Bishop
(P.R. Bishop)

/s/ F.F. Gallaher
(F.F. Gallaher)

/s/ B.S. Graham
(B.S. Graham)

/s/ G.E. Harder
(G.E. Harder)

/s/ P.B. Morris
(P.B. Morris)

 /s/ N.J. Sifferlen
(N.J. Sifferlen)

/s/ F.J. Boyle
(F.J. Boyle)

/s/ J.W. Mulpas
(J.W. Mulpas)

Director, President and Chief Executive Officer
(principal executive officer)

February 16, 2011

Director 

February 16, 2011

Director and Vice-Chairman

February 16, 2011

Director

Director

February 16, 2011

February 16, 2011

Director and Chairman

February 16, 2011

Director

Director

February 16, 2011

February 16, 2011

Senior Vice President and Chief Financial Officer
(principal financial officer) 

February 16, 2011

Vice President, Controller and Chief Accounting
Officer (principal accounting officer)

February 16, 2011

DPL Inc.  147

 
Schedule II Valuation and Qualifying Accounts

DPL Inc.

For the years ended December 31, 2008 - 2010  
$ in thousands

Description
2010:

Deducted from accounts receivable –  
Provision for uncollectible accounts

Deducted from deferred tax assets –  

Balance at  
Beginning of Period

Additions

Deductions(1)

Balance at  
End of Period

$ 1,101

$ 4,148

$ 4,378

$

871

Valuation allowance for deferred tax assets 

$ 11,955

$ 1,124

$

–

$ 13,079

2009:
Deducted from accounts receivable –  
Provision for uncollectible accounts

Deducted from deferred tax assets –  

$ 1,084

$ 5,168

$ 5,151

$ 1,101

Valuation allowance for deferred tax assets 

$ 10,685

$ 1,270

$

–

$ 11,955

2008:
Deducted from accounts receivable –  
Provision for uncollectible accounts

Deducted from deferred tax assets –  

$ 1,518

$ 4,277

$ 4,711

$ 1,084

Valuation allowance for deferred tax assets 

$ 12,429

$ 1,482

$ 3,226

$ 10,685

(1) Amounts written off, net of recoveries of accounts previously written off.

The Dayton Power and Light Company

For the years ended December 31, 2008 - 2010  
$ in thousands

Description
2010:

Deducted from accounts receivable –  
Provision for uncollectible accounts

Deducted from deferred tax assets –  

Balance at  
Beginning of Period

Additions

Deductions(1)

Balance at  
End of Period

Valuation allowance for deferred tax assets 

$

–

$

–

$

–

$ 1,101

$ 4,100

$ 4,369

$

$

832

–

2009:
Deducted from accounts receivable –  
Provision for uncollectible accounts

Deducted from deferred tax assets –  

$ 1,084

$ 5,168

$ 5,151

$ 1,101

Valuation allowance for deferred tax assets 

$

–

$

–

$

–

$

–

2008:
Deducted from accounts receivable –  
Provision for uncollectible accounts

Deducted from deferred tax assets –  

$ 1,518

$ 4,277

$ 4,711

$ 1,084

Valuation allowance for deferred tax assets 

$

348

$

–

$

348

$

–

(1) Amounts written off, net of recoveries of accounts previously written off.

148  DPL Inc.

 
Exhibit 21

Subsidiaries of DPL Inc.

DPL Inc. had the following subsidiaries at December 31, 2010:

The Dayton Power and Light Company
Miami Valley Insurance Company
DPL Energy, LLC
DPL Energy Resources, Inc.

Subsidiaries of The Dayton Power and Light Company

The Dayton Power and Light Company did not have any subsidiaries at December 31, 2010.

State of Incorporation

Ohio
Vermont
Ohio
Ohio

DPL Inc.  149

 
Exhibit 23(a) Consent of Independent Registered Public Accounting Firm

The Board of Directors 
DPL Inc.:

We consent to the incorporation by reference in the registration statements on Form S-3 (No. 333-44370) and on 
Form S-8 (Nos. 333-39982 and 333-139348) of DPL Inc. of our report dated February 17, 2011, with respect to the 
Consolidated Balance Sheets of DPL Inc. and subsidiaries as of December 31, 2010 and 2009, and the related 
Consolidated Statements of Results of Operations, Shareholders’ Equity and Cash Flows for each of the years in the 
three-year period ended December 31, 2010, and the related financial statement schedule, and the effectiveness of 
internal control over financial reporting as of December 31, 2010, which report appears in the December 31, 2010 
annual report on Form 10-K of DPL Inc.

/s/ KPMG LLP
Philadelphia, Pennsylvania

February 17, 2011

150  DPL Inc.

 
Exhibit 31(a) Certifications

I, Paul M. Barbas, certify that:

1.  I have reviewed this annual report on Form 10-K of DPL Inc.;

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a 

material fact necessary to make the statements made, in light of the circumstances under which such statements 
were made, not misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly 

present in all material respects the financial condition, results of operations and cash flows of the registrant as of, 
and for, the periods presented in this report;

4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure 

controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over 
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to 
be designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles; 

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the 
period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual 
report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over 
financial reporting; and

5.  The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal 
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of 
directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, 
summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role 
in the registrant’s internal control over financial reporting.

Date:  February 17, 2011

/s/ Paul M. Barbas

Paul M. Barbas
President and Chief Executive Officer

DPL Inc.  151

 
 
 
 
 
 
 
Exhibit 31(b) Certifications

I, Frederick J. Boyle, certify that:

1.  I have reviewed this annual report on Form 10-K of DPL Inc.;

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a 

material fact necessary to make the statements made, in light of the circumstances under which such statements 
were made, not misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly 

present in all material respects the financial condition, results of operations and cash flows of the registrant as of, 
and for, the periods presented in this report;

4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure 

controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over 
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to 
be designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles; 

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the 
period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual 
report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over 
financial reporting; and

5.  The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal 
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of 
directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, 
summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role 
in the registrant’s internal control over financial reporting.

Date:  February 17, 2011

/s/ Frederick J. Boyle

Frederick J. Boyle
Senior Vice President and Chief Financial Officer

152  DPL Inc.

 
 
 
 
 
 
 
Exhibit 31(c) Certifications

I, Paul M. Barbas, certify that:

1.  I have reviewed this annual report on Form 10-K of The Dayton Power and Light Company;

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a 

material fact necessary to make the statements made, in light of the circumstances under which such statements 
were made, not misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly 

present in all material respects the financial condition, results of operations and cash flows of the registrant as of, 
and for, the periods presented in this report;

4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure 

controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over 
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to 
be designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles; 

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the 
period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual 
report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over 
financial reporting; and

5.  The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal 
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of 
directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, 
summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role 
in the registrant’s internal control over financial reporting.

Date:  February 17, 2011

/s/ Paul M. Barbas

Paul M. Barbas
President and Chief Executive Officer

DPL Inc.  153

 
Exhibit 31(d) Certifications

I, Frederick J. Boyle, certify that:

1.  I have reviewed this annual report on Form 10-K of The Dayton Power and Light Company;

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a 

material fact necessary to make the statements made, in light of the circumstances under which such statements 
were made, not misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly 

present in all material respects the financial condition, results of operations and cash flows of the registrant as of, 
and for, the periods presented in this report;

4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure 

controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over 
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to 
be designed under our supervision, to ensure that material information relating to the registrant, including its 
consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in 
which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial 
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles; 

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this 
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the 
period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual 
report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over 
financial reporting; and

5.  The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal 
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of 
directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, 
summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role 
in the registrant’s internal control over financial reporting.

Date:  February 17, 2011

/s/ Frederick J. Boyle

Frederick J. Boyle
Senior Vice President and Chief Financial Officer

154  DPL Inc.

 
Exhibit 32(a) Certification Pursuant to 18 U.S.C. Section 1350 as Adopted  
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

DPL Inc.

The undersigned officer of DPL Inc. (the “Issuer”) hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted 
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Issuer’s Annual Report on Form 10-K for the 
period ended December 31, 2010, which this certificate accompanies, fully complies with the requirements of 
Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained therein fairly 
presents, in all material respects, the financial condition and results of operations of the Issuer as of the dates and 
for the periods expressed therein.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other 

document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the 
electronic version of this statement required by Section 906 of the Sarbanes-Oxley Act of 2002, has been provided 
to the Issuer and will be retained by the Issuer and furnished to the Securities and Exchange Commission or its staff 
upon request.

Signed:

/s/ Paul M. Barbas

Paul M. Barbas
President and Chief Executive Officer

Date: February 17, 2011

The foregoing certificate is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part  
of the Issuer’s Annual Report or as a separate disclosure document.

DPL Inc.  155

 
Exhibit 32(b) Certification Pursuant to 18 U.S.C. Section 1350 as Adopted  
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

DPL Inc.

The undersigned officer of DPL Inc. (the “Issuer”) hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted 
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Issuer’s Annual Report on Form 10-K for the 
period ended December 31, 2010, which this certificate accompanies, fully complies with the requirements of 
Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained therein fairly 
presents, in all material respects, the financial condition and results of operations of the Issuer as of the dates and 
for the periods expressed therein.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other 

document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the 
electronic version of this statement required by Section 906 of the Sarbanes-Oxley Act of 2002, has been provided 
to the Issuer and will be retained by the Issuer and furnished to the Securities and Exchange Commission or its staff 
upon request.

Signed:

/s/ Frederick J. Boyle

Frederick J. Boyle
Senior Vice President and Chief Financial Officer

Date: February 17, 2011

The foregoing certificate is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part  
of the Issuer’s Annual Report or as a separate disclosure document.

156  DPL Inc.

 
Exhibit 32(c) Certification Pursuant to 18 U.S.C. Section 1350 as Adopted  
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

The Dayton Power and Light Company

The undersigned officer of The Dayton Power and Light Company (the “Issuer”) hereby certifies pursuant to 
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Issuer’s 
Annual Report on Form 10-K for the period ended December 31, 2010, which this certificate accompanies, fully 
complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the 
information contained therein fairly presents, in all material respects, the financial condition and results of operations 
of the Issuer as of the dates and for the periods expressed therein.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other 

document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the 
electronic version of this statement required by Section 906 of the Sarbanes-Oxley Act of 2002, has been provided 
to the Issuer and will be retained by the Issuer and furnished to the Securities and Exchange Commission or its staff 
upon request.

Signed:

/s/ Paul M. Barbas

Paul M. Barbas
President and Chief Executive Officer

Date: February 17, 2011

The foregoing certificate is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part  
of the Issuer’s Annual Report or as a separate disclosure document.

DPL Inc.  157

 
Exhibit 32(d) Certification Pursuant to 18 U.S.C. Section 1350 as Adopted  
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

The Dayton Power and Light Company

The undersigned officer of The Dayton Power and Light Company (the “Issuer”) hereby certifies pursuant to 
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Issuer’s 
Annual Report on Form 10-K for the period ended December 31, 2010, which this certificate accompanies, fully 
complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the 
information contained therein fairly presents, in all material respects, the financial condition and results of operations 
of the Issuer as of the dates and for the periods expressed therein.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other 

document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the 
electronic version of this statement required by Section 906 of the Sarbanes-Oxley Act of 2002, has been provided 
to the Issuer and will be retained by the Issuer and furnished to the Securities and Exchange Commission or its staff 
upon request.

Signed:

/s/ Frederick J. Boyle

Frederick J. Boyle
Senior Vice President and Chief Financial Officer

Date: February 17, 2011

The foregoing certificate is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part  
of the Issuer’s Annual Report or as a separate disclosure document.

158  DPL Inc.

 
Intentionally left blank

Corporate Information

Shareholder Information – www.dplinc.com
Shareholder information is available at www.dplinc.
com, including access to financial conference calls and 
presentations, Securities and Exchange Commission (SEC) 
filings, and historical stock and dividend data. Interested 
parties may also receive automated e-mail alerts to DPL news 
releases and SEC filings. 

Online Shareholder Account Management – 
www.computershare.com/investor 
Shareholders may manage their DPL Inc. common stock 
account online at www.computershare.com/investor. 
Computershare is the transfer agent for DPL common stock. 
Services available online include reinvesting dividends, 
enrolling in electronic dividend deposit, changing an address, 
selling shares, and downloading forms. 

Transfer Agent Contact Information 
By Mail:

Computershare  
P.O. Box 43078 
Providence, Rl 02940-3078 

By Overnight Delivery: 
Computershare  
250 Royall Street  
Canton, MA 02021 

Phone: 800-736-3001  
Fax: 781-575-3605  
E-mail: shareholders@computershare.com  
www.computershare.com/investor 

Trustee  
DP&L First Mortgage Bonds 
The Bank of New York Corporate  
Trust Administration  
101 Barclay Street  
New York, New York 10286  
Also interest paying agent 

Securities Listing 
The New York Stock Exchange is the only national  
securities exchange on which DPL Inc. common stock  
is listed. The trading symbol is DPL.

2010 Dividends

Ex-Dividend Date

Record Date 

Payable Date 

Amount 

2/11/10 

5/12/10 

8/12/10 

2/16/10 

5/14/10 

8/16/10 

3/1/10 

6/1/10 

9/1/10 

$ 0.3025 

$ 0.3025 

$ 0.3025 

11/10/10 

11/15/10 

12/1/10 

$ 0.3025 

$ 1.21

Federal Income Tax Status of 2010 Dividend Payments
Dividends paid in 2010 on common and preferred stock are 
fully taxable as dividend income.

Certifications
DPL Inc. has filed as exhibits to its annual report on Form 10-K 
for the fiscal year ended December 31, 2010, the certifications 
of its president and chief executive officer and its senior 
vice president and chief financial officer required by Rule 
13a-14(a)/ 15d-14(a) of the Securities Exchange Act of 1934. 
DPL submitted to the New York Stock Exchange during 2010 
the annual CEO certification required by Section 303A.12 of 
the New York Stock Exchange listed company manual.

Stock Purchase and Dividend Reinvestment Plan 
In 2009, DPL introduced a new direct stock purchase and 
dividend reinvestment plan. The new plan is offered and 
administered by Computershare Trust Company, N.A., 
(Computershare) and not by DPL. This Computershare Invest-
ment Plan (CIP) provides an alternative to traditional retail 
brokerage methods of purchasing, holding and selling DPL 
shares. Both registered shareholders and new investors are 
able to purchase shares through this program. 

The CIP offers a full array of features that include the ability to: 

 Purchase shares weekly 
 Purchase initial shares through the CIP, as a new investor, 
for $250.00 in one payment or ten consecutive monthly 
payments of $25.00 
 Purchase additional shares by investing as little as $25.00 
 Authorize recurring monthly purchases through the 
automatic investment feature 
 Purchase shares over the Internet at www.computershare.com/
investor or by check 
 Reinvest dividends or receive cash dividends electronically 
or by check 
 Convert your stock certificates into book-entry shares for 
safekeeping purposes at no cost 
 Transfer shares to another person by opening a CIP account 
for the recipient 
 Sell shares daily 

To participate in the CIP, you can enroll over the Internet 
at https://www.computershare.com/investor or call 
Computershare for the brochure and form at 800-736-3001 or 
call DPL Shareholder Services at 800-322-9244. 

Dividend Direct Deposit 
Shareholders who are not reinvesting their dividends in DPL 
may choose to have their dividend payments deposited 
directly into a savings or checking account. This free service 
ensures that payments will be available on the payment 
date, eliminating potential for mail delays and lost checks. 
To enroll, contact Computershare at 800-736-3001, visit 
www.computershare.com/investor, or call DPL Shareholder 
Services at 800-322-9244. 

Annual Meeting 
The Annual Meeting of Shareholders will be held at the 
Boonshoft Museum of Discovery, 2600 DeWeese Parkway, 
Dayton, Ohio 45414, on Wednesday, April 27, 2011 at 
10:00 a.m. Eastern time.

Form 10-K Report 
DPL Inc. reports details concerning its operations and other 
matters annually to the Securities and Exchange Commission 
on Form 10-K, which is available at www.dplinc.com and 
will be supplied upon request. Please direct inquiries to 
DPL Shareholder Services. 

DPL Inc. 
1065 Woodman Drive 
Dayton, Ohio 45432 
937-224-6000 
www.dplinc.com 

DPL Shareholder Services 
937-259-7150 
800-322-9244

Officers

Board of Directors

Paul M. Barbas 
President and  
Chief Executive Officer 

Frederick J. Boyle 
Senior Vice President and 
Chief Financial Officer 

Kevin W. Crawford 
Vice President  
Generation

Craig L. Jackson 
Vice President and Treasurer 

Scott J. Kelly 
Senior Vice President  
Retail Operations / DPLER

Teresa F. Marrinan 
Senior Vice President  
Business Planning and  
Development 

Daniel J. McCabe 
Senior Vice President and  
Chief Administrative Officer 

Arthur G. Meyer 
Senior Vice President  
Corporate and Regulatory Affairs 
and General Counsel

Joseph W. Mulpas 
Vice President  
Controller and  
Chief Accounting Officer 

Bryce W. Nickel 
Vice President  
Service Operations

Timothy G. Rice 
Vice President  
Assistant General Counsel and  
Corporate Secretary 

Gary G. Stephenson 
Executive Vice President  
Operations

Glenn E. Harder  
Chairman 
DPL Inc. and DP&L 
President, GEH Advisory Services, LLC  
Former Executive Vice President and  
Chief Financial Officer  
Carolina Power and Light  
Raleigh, North Carolina

Barbara S. Graham
Partner
Graham & Company
Former Senior Vice President 
Pepco Holdings, Inc. 
Washington, D.C.

Paul M. Barbas  
President and Chief Executive Officer 
DPL Inc. and DP&L  
Dayton, Ohio

Lester L. Lyles  
Independent Consultant
Retired General, U.S. Air Force 
Former Commander of the  
Air Force Materiel Command  
Dayton, Ohio

Robert D. Biggs 
Former Executive Chairman,  
DPL Inc. and DP&L  
Retired Managing Partner  
PricewaterhouseCoopers, LLP

Pamela B. Morris
President and Chief Executive Officer
CareSource
Dayton, Ohio

Paul R. Bishop  
Chairman and Chief Executive Officer 
H-P Products, Inc.  
Louisville, Ohio

Dr. Ned J. Sifferlen  
President Emeritus  
Sinclair Community College  
Dayton, Ohio

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Frank F. Gallaher
Managing Member 
Gallaher & Associates, LLC
Former President  
Fossil Operations and Transmission 
Entergy Corporation 
New Orleans, Louisiana

 
 
 
 
 
 
 
DPL Inc.    
1065 Woodman Drive 
Dayton, Ohio 45432     

www.dplinc.com