2010 Annual Report
p. 8
p. 10
p. 12
Focused Energy. For Life. is our promise to our customers, communities and shareholders: The men
and women of Ameren, over 9,000 strong, are focused on making sure that the energy our customers
and communities need to live, work and grow is there – for today, for tomorrow, for life.
Focused On…
Shareholders | 1
Communities | 8
Operations | 10
The Environment | 12
My Fellow Shareholders,
This past year was marked by significant accomplishments
at our company. We returned our newly rebuilt Taum Sauk
pumped-storage hydroelectric plant to service, installed major
environmental controls at two coal-fired plants, simplified
our corporate structure and improved our safety and customer
satisfaction performance. All of this was accomplished while
being disciplined about cost management, which, coupled with
strong customer sales and rate relief, allowed us to overcome
the financial challenges posed by weak wholesale power prices.
Focused Energy. For Life. is more than the theme of this
report; it is a reflection of our vision to lead the way to a secure
energy future.
p. 1
B
C
A
A. Ameren owns a robust transmission
system of nearly 7,500 circuit miles and
sees opportunities for a new subsidiary –
Ameren Transmission Company (ATX) – to
invest in regional reliability and efficiency.
B. Andrea Donsbach, Ameren engineer,
and CEO Tom Voss discuss the solar
energy installation now on the rooftop of
Ameren’s headquarters, where an energy
learning center provides real-time data on
five different solar power technologies.
C. In 2010, Ameren’s three Illinois electric
and natural gas delivery companies
merged into a single legal entity – Ameren
Illinois – increasing efficiency and
offering greater convenience and clarity
to customers and investors. At the same
time, for greater clarity for our customers,
Missouri-based AmerenUE was rebranded
as Ameren Missouri.
“ We ensure that the energy needed to power
our lives and economy is there – not just for
today, but for generations to come.”
By optimizing day-to-day operations, while
customers. In support of the diverse communi-
planning strategically for the long-term, we
ties we serve, we have significantly expanded our
ensure that the energy needed to power our
supplier diversity efforts. For the second year in
lives and economy is there – not just for today,
a row, we have been recognized by the St. Louis
but for generations to come. That is our promise.
Minority Business Council as the corporation of
To deliver on that promise, we are using
the year.
our resources to enhance the value of your
investment, while meeting current needs and
implementing long-term strategies in five key
areas: Customers, Communities, Workforce,
Operations and you, our Shareholders.
Each year, Ameren financially supports many
programs that provide services to people in need
and improve our communities. Our employee
volunteerism effort is well on its way to our goal
of 250,000 hours of community service annually
FocuSing on cuSToMerS, coMMuniTieS
by 2014.
FocuSing on our WorkForce, operATionS
We have been actively engaged in building a
high-performance workforce and have continued
to improve our operating and environmental
performance. We have also developed a robust
plan for the future generation needs of our
regulated customer base in Missouri.
Our customer satisfaction ratings have shown
steady improvement in the past few years. Since
2004, the number of outages per customer has
dropped by 19 percent. We continue to invest
the time and capital necessary to develop infra-
structure that is critical to serving our customers’
energy needs.
To help customers manage their energy bills
and protect the environment, we are promoting
the efficient use of energy through a range of
programs. We are also supporting renewable
generation in Illinois and Missouri. This spring
we break ground on a new power plant that will
tap landfill gas to generate enough power for
10,000 households. We also have installed solar
energy systems at our St. Louis headquarters and
created a solar energy education center for our
p. 3
“ on the generation side of our business, we
have championed a number of programs that
contribute to environmental sustainability.”
We continue to make safety a top priority at
the solutions we have available for the future,
Ameren. In 2010, our recordable injuries were
we are working with every major electric energy
down 16 percent, and our lost workdays declined
provider in the state of Missouri and Governor
by 32 percent, compared to 2009.
Jay Nixon to preserve an option to build a new
On the generation side of our business, we have
championed a number of programs that contribute
to environmental sustainability. Over the past two
years, we have completed the installation of five
scrubber systems – major equipment additions that
remove nearly all of a plant’s sulfur dioxide emis-
sions and materially reduce nitrogen oxide and
mercury emissions. With its return to service, our
nuclear energy facility at our Callaway Plant site.
This unprecedented alliance is supporting legis-
lation that would enable us to move forward on
an early site permit from the Nuclear Regulatory
Commission. This permit would keep open the
option of building an additional emissions-free
nuclear facility in the next two decades for the
benefit of the entire state of Missouri.
450-megawatt Taum Sauk Hydroelectric Plant is
We have not accomplished these environmental
proving to be a valuable energy storage resource.
achievements by ignoring operating efficiency –
Severely damaged five years ago, the plant can
our combined regulated and merchant generating
store energy generated during non-peak periods,
plant availability stood at industry-leading levels
which is when wind power is often available, and
in 2010.
make electricity available when it is needed.
In February 2011, we filed an integrated resource
its strong safety record. In the wake of another
plan with the Missouri Public Service Commission
utility company’s gas transmission line explosion
that provides a detailed analysis of our customers’
in California, we proactively re-inspected our high
future energy needs and the relative merits of
pressure gas transmission lines.
Our natural gas distribution business continued
various generation options. Given a number
of uncertainties, including the impact of more
stringent environmental regulation, our aging
infrastructure and economic, legislative and regu-
latory factors, we will work tirelessly to provide the
best solutions for customers and shareholders.
Undoubtedly, we must pursue a range of potential
options, including nuclear, fossil and renewable
fuels as well as energy efficiency. To optimize
Our merchant generating plants have taken
several steps to remain highly competitive.
In 2009 and 2010, we reduced staffing at our
merchant business by over 200 positions and
significantly lowered planned capital expendi-
tures. We are focused on maintaining a low-cost
structure and prudently addressing environmental
mandates.
p. 4
A
B
A. In downtown St. Louis, Scottrade
Center installed energy efficient
lighting inside the entertainment
venue. This project was supported
by incentives that are part of Ameren
Missouri’s energy efficiency programs,
which help the environment and save
customers money. Program costs are
eligible for recovery in rates.
B. Ray Boccardi, shown here with
Ameren Illinois Engineering
Representative Barbara Baldridge,
depended on Ameren Illinois’ gas
experts when he set up the new
Joe Boccardi’s Ristorante in Swansea,
Ill. In addition to good service, Ameren’s
nearly one million natural gas custom-
ers enjoy safe service. Ameren Illinois’
average gas leak response time is an
industry-leading 23 minutes.
C. Gateway Regional Medical Center
upgraded the energy efficiency and
reliability of its cooling system with
the help of a nearly $230,000 grant
from Ameren Illinois’ Act On Energy
program. Aimed at helping customers
save energy, the program is funded
through a charge on energy bills.
D. Since 2009, Missouri residential
customers have received annual
personal energy reports, providing
such information as year-to-year
comparisons of household energy usage
plus tips on ways to save energy and
details on discounts offered on energy
efficient products.
C
D
A
D
Ameren’s Executive Leadership
Team: (A) Thomas R. Voss, Chair-
man, President and Chief Executive
Officer, Ameren Corporation;
(B) Warner L. Baxter, Chairman,
President and Chief Executive
Officer, Ameren Missouri;
(C) Scott A. Cisel, Chairman,
President and Chief Executive
Officer, Ameren Illinois; (D) Daniel
F. Cole, Chairman, President and
Chief Executive Officer, Ameren
Services; (E) Steven R. Sullivan,
Chairman, President and Chief
Executive Officer, Ameren Energy
Resources; Chairman and President,
Ameren Energy Generating;
and Secretary, Ameren Corporation;
(F) Maureen A. Borkowski, Chair-
man, President and Chief Executive
Officer, Ameren Transmission;
(G) Karen C. Foss, Senior Vice
President, Communications and
Brand Management, Ameren
Services; (H) Adam C. Heflin,
Senior Vice President and Chief
Nuclear Officer, Ameren Missouri;
(I) Martin J. Lyons, Jr., Senior
Vice President and Chief Financial
Officer, Ameren Corporation;
(J) Richard J. Mark, Senior
Vice President, Customer
Operations, Ameren Missouri;
B
E
C
F
G
H
I
J
K
L
M
(K) Charles D. Naslund, Senior Vice President, Generation and Environmental Projects, Ameren Missouri;
(L) Michael L. Moehn, Senior Vice President, Corporate Planning and Business Risk Management, Ameren
Services; and (M) Andrew M. Serri, President and Chief Executive Officer, Ameren Energy Marketing
FocuSing on ShAreholder VAlue
and maintaining generation options for our future.
Our employees and leadership team will continue
We will prudently manage our operations and
to focus our energy on tight control of capital
finances and remain dedicated to providing an
and optimization of the value of our regulated
attractive total return based on a strong dividend
and merchant generation businesses. Our rate
and long-term prospects for earnings growth.
cases in Missouri and Illinois should allow our
revenues to better keep pace with our costs and
investments, while still providing customers with
rates that are below the national average. Our
merchant plants should benefit from an eventual
recovery in power prices prompted by economic
growth and a corresponding increase in demand
for electricity.
In closing, I want to express our deep gratitude
to two, retiring, long-time directors who have
contributed a great deal to our company. Former
Ameren Chairman, President and CEO Charles
Mueller was an employee for over 40 years and
has been a director since 1993. Harvey Saligman
will retire after more than 20 years on our board.
Both Chuck and Harvey have served with extraor-
To capitalize on Ameren’s already robust, high-
dinary distinction. Their vision and leadership will
voltage transmission system, we formed a new
be missed.
subsidiary – Ameren Transmission Company
(ATX). ATX intends to build greenfield regional
transmission projects, initially within Illinois and
Missouri, and has identified more than $3 billion
of investment opportunities with attractive
return potential.
2010 was a solid year, and we have seized on
multiple opportunities to improve our outlook for
the future. We expect 2011 to be marked by
final versions of proposed and significant new
environmental rules, which will shape the future
of generation in the United States and the future
of our businesses. We are committed to a leading
role in the environmental debate and creating
I also want to thank our employees for their
commitment to building an ever stronger
company. Rest assured, we are working diligently
to deliver on our goals.
I invite you to attend this year’s annual meeting on
April 21 at Powell Symphony Hall in St. Louis.
Thomas R. Voss
Chairman, President and Chief Executive Officer
Ameren Corporation
p. 7
A
A. A rebate from Ameren Illinois’ energy efficiency program
helped pay for new lighting so students can more easily find
the right books at Cullom-Davis Library on the campus of
Bradley University. The library serves as a valuable resource
for the 6,000 students at the Peoria, Ill.-based institution
and is open to the community. Program costs are covered
by charges on customer bills.
B
B. Over 19,000 children with physical or mental disabilities
benefit from programs funded by Variety the Children’s
Charity of St. Louis. In 2010, Variety awarded Ameren its
President’s Award, in recognition of the company’s support.
W e ’ r e F o c u s e d O n E n r i c h i n g O u r
Commun ties
pArTnering WiTh our MAny
coMMuniTieS To MAke TheM BeTTer
plAceS To liVe
AT AMEREN, WE NURTURE OUR RELATIONSHIPS with our communities
through corporate contributions, employee volunteerism and a range of programs.
In 2010, we provided additional help to those most in need in this tough
economy — from supporting housing for the homeless to providing emergency
food supplies and energy assistance. In addition, our economic development
programs assisted communities in a difficult economy. By partnering with
economic development organizations, we helped attract over $194 million in
new project investment and approximately 1,200 new jobs. We supported such
projects as the new distribution center for World Wide Technology, Inc. — a
leading systems integrator, in Edwardsville, Ill., and the new 224,000 square-foot
technology and innovation center built in St. Louis County by Express Scripts,
Inc., one of the largest pharmacy benefit management companies in North
America. We also supported a variety of creative programs to encourage more
efficient use of energy and safe practices in using gas and electricity. Launched
in 2010, the online site — KidsActOnEnergy.com — provides a range of energy
efficiency and safety information for kids, teachers and parents, reaching more
than 40,000 Illinois elementary and junior high students in 2010 alone.
p. 9
A. 2010 marked a return to service for Ameren Missouri’s
450-megawatt Taum Sauk Hydroelectric Plant. Severely
damaged by overtopping five years ago, the plant’s upper
reservoir was rebuilt, and the plant now has a new, state-of-
the-art distributed control system that is shown here.
B. Two, 400-foot towers were needed to span the Mississippi
River for a 345,000-volt, 30-mile transmission line that
connects the Dynegy Baldwin Plant in Illinois to the Ameren
Missouri Rush Island Plant in Missouri – all to increase
reliability and reduce future congestion on the grid.
A
B
W e ’ r e F o c u s e d O n E n h a n c i n g
Opera ions
keeping The gAS And elecTriciTy FloWing
in A SAFe, reliABle, eFFicienT, enVironMenTAlly
reSponSiBle MAnner
OPERATIONAL EXCELLENCE means available generation — keeping plants
running 24/7. It means rebuilding our pumped-storage hydroelectric plant’s
upper reservoir to provide energy storage and quick start generation. It also
means investing in a smarter distribution system so system operators can better
monitor, control and respond to grid conditions. In 2010, as part of our customer
strategic initiative, Ameren Missouri’s grid became even smarter with the
automation of all distribution circuits at its Maryland Heights, Mo., substation,
integrating several technical applications that, when combined, improved
system operation and reliability. The complexity and sophistication of the
Dorsett Distribution Automation Project has captured the attention of the utility
industry, with the Electric Power Research Institute, the key industry research
organization, showcasing this initiative as one of a select number of “Smart
Grid” demonstration projects.
p. 11
A
B
A. Ameren has installed five new scrubber systems in two
years – the most recent installation was at our Sioux Plant
outside St. Louis. These sophisticated air filtration systems
remove nearly all of the plant’s sulfur dioxide emissions and
materially reduce nitrogen oxide and mercury emissions.
B. Riverlands Migratory Bird Sanctuary, near Alton, Ill.,
is home to hundreds of swans and to 1,000 new Ameren
“swan diverters” designed to keep breeding swans from
being injured by flying into transmission lines.
W e ’ r e F o c u s e d O n P r o t e c t i n g t h e
Envir nment
SupporTing reneWABle energy, cleAn coAl
TechnologieS, WASTe reducTion — All
cornerSToneS oF enVironMenTAl
perForMAnce leAderShip
OVER THE yEARS, Ameren has invested in renewable energy resource
development, recycled and stored waste responsibly and served as an industry
leader in reducing emissions at its power plants. To support research on clean
coal technologies, Ameren is a partner in FutureGen 2.0 — funded by one
billion federal stimulus dollars. Through FutureGen 2.0, our Meredosia Plant in
Illinois would become the world’s first full-scale oxy-combustion power plant.
Once retrofitted, a unit at this merchant generating plant would capture more
than 90% of the carbon dioxide (CO2) emitted at the site. A coal combustion
byproduct often linked to climate change, the CO2 would then be piped and
injected into underground storage areas. While certain conditions must be met
before the project moves forward, we are excited about the prospect of building
a near-zero-emission facility that will serve as an invaluable testing ground for
these critical new technologies.
p. 13
Financial Highlights
AMEREN CONSOLIDATED
(In millions, except per share amounts and as noted)
2010
2009
2008
year Ended December 31,
RESULTS OF OPERATIONS
Operating revenues
Operating expenses
Operating income
Net income attributable to Ameren Corporation
COMMON STOCK DATA
Earnings per basic and diluted share
Dividends per common share
Dividend yield (year-end)
Market price per common share (year-end closing)
Shares outstanding (weighted average)
Total market value of common shares (year-end)
Book value per common share
BALANCE SHEET DATA
Property and plant, net
Total assets
Long-term debt obligations, excluding current maturities
Capitalization ratios
Common equity
Preferred stock, not subject to mandatory redemption
Debt and preferred stock subject to mandatory redemption, net of cash
OPERATING DATA
Total electric sales (kilowatthours)
Native natural gas sales (decatherms in thousands)
Total generation output (kilowatthours)
Electric customers
Natural gas customers
$7,638
$6,722
$916
$139
$7,135
$5,719
$1,416
$612
$0.58
$1.54
5.5%
$28.19
238.8
$6,777
$32.15
$17,853
$23,515
$6,853
51.3%
0.9%
47.8%
111,887
103,012
77,698
2.4
0.9
$2.78
$1.54
5.5%
$27.95
220.4
$6,635
$33.08
$17,610
$23,702
$7,111
50.3%
1.3%
48.4%
104,062
107,647
76,239
2.4
0.9
$7,869
$6,507
$1,362
$605
$2.88
$2.54
7.6%
$33.26
210.1
$7,062
$32.80
$16,567
$22,671
$6,554
45.9%
1.3%
52.8%
107,754
119,712
80,859
2.4
0.9
p. 14
Electrical Generating Capacity
(Expected for 2011 summer peak)
6,300
megawatts of merchant
generating capacity
3,300,000
electric and natural
gas customers
10,400
megawatts of
Ameren Missouri
generating capacity
Peoria
Springfield
Decatur
St. Louis
Company Headquarters
Subsidiary Headquarters
Electric Service Territory
Electric and Natural Gas
Service Territory
Ameren companies serve approximately
2.4 million electric and nearly one million
natural gas customers over 64,000 square
miles in Illinois and Missouri. Our service
territory includes a diverse base of residential,
commercial and large industrial customers in
both urban and rural areas. In Missouri, we
operate primarily as a traditional, rate-regulated
utility with approximately 10,400 megawatts
of generating capacity. Our Illinois operations
include rate-regulated electric and natural
gas transmission and distribution businesses.
Ameren’s merchant generation business
includes several coal-fired plants and mul-
tiple natural gas-fired units with a capacity of
approximately 6,300 megawatts of generation.
Ameren Missouri is the largest electric utility
in the state, while Ameren Illinois ranks as the
second largest electric distributor and one of
the largest natural gas distributors in Illinois.
Residential Rates
(Cents per kilowatthour at June 2010)
Capitalization
(December 31, 2010)
U.S. Average
Ameren Illinois
Ameren Missouri
11.74¢
9.92 ¢
7.18 ¢
0.9%
Preferred
Stock
51.3%
Equity
47.8%
Debt
Commercial Rates
(Cents per kilowatthour at June 2010)
U.S. Average
Ameren Illinois
9.97 ¢
8.77 ¢
Ameren Missouri
5.83 ¢
Source: Summer 2010 EEI Typical Bills and Average Rates Report
p. 15
Ameren Corporation and Subsidiaries Officers and Directors
ExECUTIVE LEADERSHIP TEAM
Thomas R. Voss
Chairman, President and
Chief Executive Officer,
Ameren Corporation
Warner L. Baxter*
Chairman, President and
Chief Executive Officer,
Ameren Missouri
Scott A. Cisel*
Chairman, President and
Chief Executive Officer,
Ameren Illinois
Daniel f. Cole*
Chairman, President and
Chief Executive Officer,
Ameren Services
Steven R. Sullivan**
Chairman, President and
Chief Executive Officer,
Ameren Energy Resources;
Chairman and President,
Ameren Energy Generating
Company; and Secretary,
Ameren Corporation
Maureen A. Borkowski*, **
Chairman, President and Chief
Executive Officer, Ameren
Transmission Company
Karen C. foss*
Senior Vice President,
Communications and Brand
Management, Ameren Services
Adam C. Heflin*
Senior Vice President and
Chief Nuclear Officer,
Ameren Missouri
Martin J. Lyons, Jr.
Senior Vice President and
Chief Financial Officer
Richard J. Mark*
Senior Vice President, Customer
Operations, Ameren Missouri
Michael L. Moehn*
Senior Vice President, Corporate
Planning and Business Risk
Management, Ameren Services
Charles D. Naslund*, **
Senior Vice President,
Generation and Environmental
Projects, Ameren Missouri
Andrew M. Serri*
President and Chief Executive
Officer, Ameren Energy Marketing
OTHER OffICERS
Lynn M. Barnes*
Vice President, Business
Planning and Controller,
Ameren Missouri
Jerre E. Birdsong
Vice President and Treasurer
Mark C. Birk*
Vice President, Power
Operations, Ameren Missouri
S. Mark Brawley*
Vice President, Internal Audit,
Ameren Services
Kevin DeGraw*
Vice President, Enterprise Risk
and Project Management,
Ameren Services
fadi Diya*
Vice President, Nuclear
Operations, Ameren Missouri
Scott A. Glaeser*
Vice President, Gas & Electric
Technical Services, Ameren
Illinois
Mary P. Heger*
Vice President, Information
Technology and Ameren
Services Center, Ameren
Services
David Hunt*, **
Vice President, Corporate
Communications, Ameren
Services
Christopher A. Iselin*
Vice President, Generation,
Ameren Energy Resources
Stephen M. Kidwell*
Vice President, Corporate
Development, Ameren Services
Mark C. Lindgren*
Vice President, Human
Resources, Ameren Services
Michael L. Menne*
Vice President, Environmental
Services, Ameren Services
Michael G. Mueller*
Vice President, Energy Trading
and Fuel Commodities,
Ameren Missouri
Craig D. Nelson*
Senior Vice President,
Regulatory Affairs and Financial
Services, Ameren Illinois
Gregory L. Nelson**
Senior Vice President and
General Counsel
Stan E. Ogden*
Vice President, Customer
Service and Public Relations,
Ameren Illinois
Ronald D. Pate*
Vice President, Operations,
Ameren Illinois
Joseph M. Power*
Vice President, Federal
Legislative and Regulatory
Affairs, Ameren Services
Cleveland O. Reasoner*
Vice President, Engineering,
Callaway Nuclear Plant,
Ameren Missouri
David J. Schepers*
Vice President, Energy
Delivery Technical Services,
Ameren Missouri
Shawn E. Schukar*
Vice President, Strategic
Initiatives, Ameren Services
James A. Sobule*
Vice President and Deputy General
Counsel, Ameren Services
Bruce A. Steinke
Vice President and Controller
David N. Wakeman*
Vice President, Energy
Delivery-Distribution Services,
Ameren Missouri
Dennis W. Weisenborn*
Vice President, Supply Services,
Ameren Services
D. Scott Wiseman*
Vice President, Regulatory Affairs,
Ameren Illinois
Warren T. Wood*
Vice President, Regulatory
and Legislative Affairs,
Ameren Missouri
BOARD Of DIRECTORS
Stephen f. Brauer 2, 4
Chairman and Chief
Executive Officer, Hunter
Engineering Company
Ellen M. fitzsimmons 2, 4
Senior Vice President of
Law and Public Affairs,
General Counsel and
Corporate Secretary,
CSX Corporation
Walter J. Galvin 1, 2
Vice Chairman, Emerson
Electric Co.
Dr. Gayle P. W. Jackson 4, 5
President and Chief Executive
Officer, Energy Global, Inc.
James C. Johnson 3, 4
General Counsel,
Loop Capital Markets, LLC
Steven H. Lipstein 1, 3
President and Chief Executive
Officer, BJC HealthCare
Charles W. Mueller 1, 5
Retired Chairman and
Chief Executive Officer,
Ameren Corporation
Harvey Saligman 3, 4
Partner, Cynwyd Investments
Patrick T. Stokes 1, 3, 6
Former Chairman,
Anheuser-Busch
Companies, Inc.
* Officer of an Ameren Corporation subsidiary only
** As of March 2, 2011
1 Member of the Finance Committee
2 Member of the Audit and Risk
Committee
3 Member of the Human Resources
Committee
4 Member of the Nominating and
Corporate Governance Committee
5 Member of the Nuclear Oversight and
Environmental Committee
6 Lead Director
Thomas R. Voss
Chairman, President and
Chief Executive Officer,
Ameren Corporation
Stephen R. Wilson 2, 5
Chairman, President and
Chief Executive Officer,
CF Industries Holdings, Inc.
Jack D. Woodard 3, 5
Retired Executive Vice
President and Chief Nuclear
Officer, Southern Nuclear
Operating Company, Inc.
Investor Information
COMMON STOCK AND DIVIDEND INfORMATION
Ameren’s common stock is listed on the New York Stock
Exchange (ticker symbol: AEE). Ameren began trading on
January 2, 1998, following the merger of Union Electric
Company and CIPSCO Inc. on December 31, 1997. Ameren
common shareholders of record totaled 67,035 on December
31, 2010. The following table provides the closing price ranges
and dividends paid per Ameren common share during each
quarter of 2010 and 2009.
AEE 2010
Dividends
Quarter Ended
High
Low Close
Paid
March 31
June 30
September 30
December 31
AEE 2009
$28.27 $24.14 $26.08
23.09
23.45
28.99
28.40
23.77
26.92
29.89 27.65
28.19
38 1⁄2 ¢
38 1⁄2
38 1⁄2
38 1⁄2
Dividends
Quarter Ended
High
Low Close
Paid
March 31
June 30
September 30
December 31
$35.35 $19.51 $23.19
21.75
23.09
24.89
25.25
27.66
25.28
28.67 23.78
27.95
38 1⁄2 ¢
38 1⁄2
38 1⁄2
38 1⁄2
ANNUAL MEETING
The annual meeting of Ameren Corporation shareholders will
convene at 9 a.m. (Central Time), Thursday, April 21, 2011, at
Powell Symphony Hall, 718 North Grand Boulevard, St. Louis,
Missouri. The annual shareholder meetings of Ameren Illinois
Company and Union Electric Company will be held at the
same time.
DRPLUS
Any person of legal age or entity, whether or not an Ameren
shareholder, is eligible to participate in DRPlus, Ameren’s
dividend reinvestment and stock purchase plan. Participants can:
• make cash investments by check or automatic direct debit
to their bank accounts to purchase Ameren common stock,
totaling up to $120,000 annually,
• reinvest their dividends in Ameren common stock (minimum
dividend reinvestment requirement of 10% as of January 1,
2011) or receive Ameren dividends in cash and
• place Ameren common stock certificates in safekeeping and
receive regular account statements.
For more information about DRPlus, you may obtain a
prospectus from Ameren’s Investor Services representatives.
DIRECT DEPOSIT Of DIVIDENDS
All registered Ameren common and Ameren Illinois Company
and Union Electric Company preferred shareholders can have
their cash dividends automatically deposited to their bank
accounts. This service gives shareholders immediate access to
their dividend on the dividend payment date and eliminates the
possibility of lost or stolen dividend checks.
CORPORATE GOVERNANCE DOCUMENTS
Ameren makes available, free of charge through its website
(www.ameren.com), the charters of the board of directors’
audit and risk committee, human resources committee,
nominating and corporate governance committee, nuclear
oversight and environmental committee, and finance
committee. Also available on Ameren’s website are its
corporate governance guidelines, policy regarding nominations
of directors, policy regarding communications to the board
of directors, policy and procedures with respect to related
person transactions, Code of Business Conduct (referred to
as the “Corporate Compliance Policy”) and its Code of Ethics
for principal executive and senior financial officers. These
documents are also available in print, free of charge upon
written request, from the Office of the Secretary, Ameren
Corporation, P.O. Box 66149, Mail Code 1370, St. Louis, MO
63166-6149. Ameren also makes available, free of charge
through its website, the company’s annual reports on SEC
Form 10-K, quarterly reports on SEC Form 10-Q, and its current
reports on SEC Form 8-K, including any chief executive officer
and chief financial officer certifications required to be filed with
the Securities and Exchange Commission therewith.
ONLINE STOCK ACCOUNT ACCESS
Ameren’s website (www.ameren.com) allows registered
shareholders to access their account information online.
Shareholders can securely change their reinvestment options,
view account summaries, receive DRPlus statements and more
through the website. This is a free service.
INVESTOR SERVICES
Ameren’s Investor Services representatives are available
to help you each business day from 8:00 a.m. to 4:00 p.m.
(Central Time). Please write or call:
Ameren Services Company, Investor Services
P.O. Box 66887
St. Louis, MO 63166-6887
314-554-3502
800-255-2237
invest@ameren.com
TRANSfER AGENT , REGISTRAR AND P AyING AGENT
The Transfer Agent, Registrar and Paying Agent for Ameren
common stock and Ameren Illinois Company and Union Electric
Company preferred stock is Ameren Services Company.
Ameren Corporation
One Ameren Plaza
1901 Chouteau Avenue
St. Louis, MO 63103
314-621-3222
P.O. Box 66149
St. Louis, MO 63166-6149
www.ameren.com