SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549







                                    FORM U5S









                                  ANNUAL REPORT

                      For the Year Ended December 31, 2002






       Filed pursuant to the Public Utility Holding Company Act of 1935 by





                                                         `




                               AMEREN CORPORATION
                 1901 Chouteau Avenue, St. Louis, Missouri 63103





                                TABLE OF CONTENTS
                                                                                                         Page
                                                                                                   
ITEM 1.    SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002                                1

ITEM 2.    ACQUISITIONS OR SALES OF UTILITY ASSETS                                                        10

ITEM 3.    ISSUE, SALE, PLEDGE, GUARANTEE OR ASSUMPTION OF SYSTEM SECURITIES                              10

ITEM 4.    ACQUISITION, REDEMPTION OR RETIREMENT OF SYSTEM SECURITIES                                     10

ITEM 5.    INVESTMENTS IN SECURITIES OF NON-SYSTEM COMPANIES                                              11

ITEM 6.    OFFICERS AND DIRECTORS

           Part I.  Name, principal business address and positions held as of
           December 31, 2002                                                                              12

           Part II. Financial connections as of December 31, 2002                                         20

           Part III.Compensation and other related information                                            20

ITEM 7.    CONTRIBUTIONS AND PUBLIC RELATIONS                                                             22

ITEM 8.    SERVICE, SALES AND CONSTRUCTION CONTRACTS

           Part I.  Intercompany sales and service                                                        23

           Part II. Contracts to purchase services or goods between any system company
           and affiliate                                                                                  23

           Part III.Employment of any person by any system company for the performance
           on a continuing basis of management services                                                   23

ITEM 9.    WHOLESALE GENERATORS AND FOREIGN UTILITY COMPANIES                                             24

ITEM 10.   FINANCIAL STATEMENTS AND EXHIBITS

     Index to Financial Statements                                                                        24

     Financial Statements                                                                         Appendix B

     Exhibits                                                                                             25

SIGNATURE                                                                                                 33









ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002.

                                             Number of
                                              Common            % of           Issuer         Owner's
                                              Shares            Voting         Book           Book
   Name of Company                            Owned             Power          Value          Value          Business Type
   ---------------                            -----             -----          -----          ------         -------------
                                                                                          

Ameren Corporation                                                        3,935,133,661    3,935,133,661     Holding Company

  Union Electric Company                     102,123,834       100.0      2,631,348,425    2,631,348,425     Electric & Gas Utility

          Envirotech Investment                                                 (1)                          Energy-Related
          Fund, L.L.C.

      Electric Energy, Inc.                       24,800        40.0         36,567,546       14,627,018     Electric

          Joppa & Eastern Railroad Company        10,000       100.0            100,000          100,000     Rail Transport

          Met-South, Inc.                            100       100.0              5,000            5,000     Wholesale Marketing

          Midwest Electric Power, Inc.             1,000       100.0            100,000          100,000     Generating Company

          Southern Materials Transfer, Inc.       10,000       100.0                  0                0     Coal Terminal

          Massac Enterprises, LLC                                               (2)                          Purchasing Company

      Union Electric Development Corp.            18,500       100.0        (23,390,483)     (23,390,483)    Community Develop-
                                                                                                             ment & Energy-Related
                                                                                                             Investments

          Civic Ventures                                                        (3)                          Community
          Investment Fund, LP                                                                                Development

          Lewis & Clark Industrial                                              (4)                          Community
          Development Corporation                                                                            Development

          Laclede's Landing                                                     (5)                          Community
          Redevelopment Corp.                                                                                Development

                                        1

ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)

          Gateway National Bank                                                 (6)                          Community
                                                                                                             Development

          NEMO Bank Community                                                   (7)                          Community
          Development Corporation                                                                            Development

          St. Louis Equity Fund 1988                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1990                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1991                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1992                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1993                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1994                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1995                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1996                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1997                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1998                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 1999                                            (8)                          Community
                                                                                                             Development
                                       2


ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)

          St. Louis Equity Fund 2000                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 2001                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 2002                                            (8)                          Community
                                                                                                             Development

          St. Louis Equity Fund 2003                                        (8)                          Community
                                                                                                             Development

          Homestead Brookfield Housing                                          (9)                          Community
                                                                                                             Development

  Central Illinois Public Service Company       25,452,373     100.0        511,859,890      511,859,890     Electric & Gas

      CIPS Energy, Inc.*                               100     100.0              1,000            1,000

  CIPSCO Investment Company                            100     100.0          5,470,790        5,470,790     Leasing and
                                                                                                             Energy-Related
                                                                                                             Investments

          Illinois Equity Fund 1992                                            (10)                          Investments

          Illinois Equity Fund 1994                                            (10)                          Investments

          Illinois Equity Fund 1996                                            (10)                          Investments

          Illinois Equity Fund 1998                                            (10)                          Investments

          Illinois Equity Fund 2000                                            (10)                          Investments

          St. Louis Equity Fund 1999                                           (10)                          Investments

          St. Louis Equity Fund 2000                                           (10)                          Investments

          St. Louis Equity Fund 2001                                           (10)                          Investments

          St. Louis Equity Fund 2002                                           (10)                          Investments

                                      3



ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)

      CIPSCO Securities Company                        100                     (11)                          Investments

      CIPSCO Venture Company                           100                      281,858          281,858     Civic and  Economic
                                                                                                             Development

          Mattoon Enterprise Park LLC                                          (12)                          Investments

          MACC, LLC                                                            (13)                          Investments

      CIPSCO Leasing Company                           100                     (14)                          Leveraged Leases

          CLC Aircraft Leasing Co.                     100                     (15)                          Equipment Leasing

          CLC Leasing Co. A                            100                     (16)                          Equipment Leasing

          CLC Leasing Co. C*                           100                     (17)

      CIPSCO Energy Company                            100     100.0          4,480,158        4,480,158     Energy-Related
                                                                                                             Investments

          CEC-ACLP-Co.                                                         (18)                          Investments

  Ameren Energy, Inc.                                1,000     100.0         (6,891,507)      (6,891,507)    Power Marketing,
                                                                                                             Energy-Related

  Ameren Services Co.                                1,000     100.0         (4,031,522)      (4,031,522)    Services to Ameren
                                                                                                             and its affiliates

  Ameren Development Company                         1,000     100.0        (26,646,329)     (26,646,329)    Holding Company

          Ameren ERC, Inc.                           1,000     100.0         (5,810,675)      (5,810,675)    Energy-Related

            Missouri Central Railroad Company      100,000     100.0          6,699,428        6,699,428     Rail Transport

            Gateway Energy Systems, L.C.
            and affiliates                                                     (19)                          Energy-Related


                                       4

ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)

          Ameren Energy Communications, Inc.         1,000     100.0        (19,914,094)     (19,914,094)    Communications-
                                                                                                             Related

            Enporion Inc.                                                      (20)                          E-Commerce

  Ameren Energy Resources Company                    1,000     100.0        270,381,620      270,381,620     Holding Company

          Illinois Materials Supply Co.              1,000     100.0         (2,008,734)      (2,008,734)    Purchasing Company

          Ameren Energy Marketing Co.                1,000     100.0         (9,538,380)      (9,538,380)    Wholesale and
                                                                                                             Retail Marketing

          Ameren Energy Development Co.              1,000     100.0        280,153,359      280,153,359     Generating Facilities

             Ameren Energy Generating Co.            2,000     100.0        280,006,033      280,006,033     Generating Company

          Ameren Energy Fuels and Services           1,000     100.0           (820,631)        (820,631)    Fuel Purchasing
          Company

             Cowboy Railroad Development                        70.97                                        Develop feasibility
             Company, LLC                                                                                study for railroad

             AFS Development Company, LLC                  100.0                                         Oil and gas exploration
                                                                                                             and production

          Electric Energy, Inc.                 12,400      20.0         36,567,546        7,313,509     Electric

             Joppa & Eastern Railroad Co.           10,000                      100,000          100,000     Rail Transport

             Met-South, Inc.                           100                        5,000            5,000     Wholesale Marketing

             Midwest Electric Power, Inc.            1,000                      100,000          100,000     Generating Company

             Southern Materials Transfer, Inc.      10,000                            0                0     Coal Terminal

             Massac Enterprises, LLC                                           (2)                           Purchasing Company



----------------------------
*    Inactive Company

                                       5


ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)


                  NOTES RELATING TO VOTING POWER AND BOOK VALUE

Union Electric Company

 (1)   Envirotech  Investment Fund, L.L.C.
          Capital   investments  in   energy-related   businesses  with  Company
          contributions amounting to $1,068,759 as of 12/31/02.

Electric Energy, Inc.

 (2)   Massac  Enterprises,  LLC
          Capital  contribution  of $100,000 for  purchasing  operations  within
          "enterprise zones".

Union Electric Development Corporation

 (3)   Civic Ventures  Investment  Fund, LP
          Investment  fund to  promote  growth  and  development  of  small  and
          minority business enterprises with Company contributions  amounting to
          $68,667 as of 12/31/02.

 (4)   Lewis and Clark Industrial Development  Corporation
          Capital contribution in civic development of $5,000 as of 12/31/02.

 (5)   Laclede's Landing  Redevelopment  Corporation
          Capital contribution in civic development of $10,000 as of 12/31/02.

 (6)   Gateway  National  Bank
          Capital contribution in civic development of $60,000 as of 12/31/02.

 (7)   NEMO Bank Community  Development  Corporation
          Capital contribution in civic development of $1,000 as of 12/31/02.

 (8)   St. Louis Equity Funds - 1988,  1990,  1991,  1992,  1993, 1994, 1995,
       1996, 1997, 1998, 1999, 2000, 2001, 2002 and 2003.
          Real estate investment  funds, with the Company's total  contributions
          as of 12/31/02 of  $5,754,146.  Includes  purchase of tax credits from
          Mercantile  Community   Development   Corporation,   Federal  National
          Mortgage   Association   and  U.S.   Bancorp   Community   Development
          Corporation, along with a subscription commitment as noted in Footnote
          1, Page 9. No established market value

 (9)   Homestead  Brookfield Housing
          Capital contribution for economic development amounting to $1,061 as
          of 12/31/02.


                                       6

ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)

CIPSCO Investment Company

 (10)  Illinois  Equity  Funds  -  1992, 1994,  1996,  1998,  and  2000  Limited
       Partnerships  and St. Louis  Equity Funds 1999 LLC,  2000 LLC, 2001  LLC,
       and 2002 LLC. Various ownership interests of not more than 20% in various
       limited  partnerships.  Total commitment to equity funds of  $6,500,000.
       No established  market value, book value is $3,333,350. Includes purchase
       of tax credits from Mercantile Community Development Corporation.

CIPSCO Venture Company holdings:

Total equity interest in the investments listed below is $281,858:

 (11) Mattoon  Enterprise Park, LLC
          A 20% equity interest, but not the managing member, in the above named
          limited liability company. No established market value.

 (12) MACC,  LLC
          A 33.33%  interest,  but not the managing  member,  in the above named
          limited liability company. No established market value.


CIPSCO Leasing Company

Total current asset book value of investments listed below is $28,775,523:

(13)  A 17.5% undivided interest in a leveraged lease financing of a natural gas
      liquids plant held under the subsidiary name of CIPSCO Leasing Company.

(14)  A 100% interest in a leveraged  lease  financing of a commercial  aircraft
      held under the subsidiary name CIPSCO Aircraft Leasing Company.

(15)  A 25% undivided interest in a leveraged lease financing of various oil and
      gas production equipment held under the subsidiary name CLC Leasing
      Company A.

(16)  CLC Leasing Company C established for future investment  opportunities; no
      current investments.

                                       7

ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)

CIPSCO Energy Company

(17)  Appomattox  Cogeneration L.P.
          A 24.75%  limited  partnership  interest  in the above  named  Limited
          Partnership. This investment is held in CEC-ACLP Company, a subsidiary
          of CIPSCO Energy Company. Book value is $4,480,158.


Ameren ERC, Inc.

(18)  Gateway  Energy  Systems,  LLC and affiliates
          A  89.1%  interest  in  the  above  named  Limited  Liability  Company
          amounting to $1,103,067 as of 12/31/02.


Ameren Energy Communications, Inc.

(19)  Enporion Inc.
          Ameren was one of seven founding members of the above named e-commerce
          company  with  a  $5,000,000  investment  as  of  12/31/02.

                                       8

ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 2002. (Continued)

                                    FOOTNOTES

 St. Louis Equity Fund 2003 is subscription  commitment of $1,500,000 to the
     real estate fund; no money as of 12/31/02 had been paid.

 Arkansas limited  liability  company  organized  February 15, 2002 for
     development of  feasibility  study for railroad.  Contribution  of $260,000
     with a 70.97%. interest.

 Illinois  limited  liability   company  organized   September  6,  2002.
     Contribution of $10,000 with an 100% interest.

 Central  Illinois  Public  Service  Company  transferred  its twenty  (20%)
     percent interest in Electric Energy Inc. to Ameren Energy Resources Company
     in 2002.


                                       9


ITEM 2. ACQUISITIONS OR SALES OF UTILITY ASSETS

     Pursuant to the territorial agreement between Union Electric Company, d/b/a
AmerenUE, and Gascosage Electric Cooperative,  and reliance on Rule 44, AmerenUE
sold  substations  and electric  distribution  facilities to Gascosage  Electric
Cooperative in the amount of $1.6 million in 2002.


ITEM 3. ISSUE, SALE, PLEDGE, GUARANTEE OR ASSUMPTION OF SYSTEM SECURITIES

A.   Union Electric Company - Debt Issuance

     1.   Issuance of $173 million  fall-away  First Mortgage  Bonds,  5.25% due
          September 1, 2012. Issued on August 22, 2002.

B.   Ameren Energy Generating Company - Debt Issuance

     1.   Issuance of $275 million Senior Notes,  7.95% due June 1, 2032. Issued
          on June 6, 2002.

C.   Ameren Corporation - Guarantees

     1.   The  registrant  and  its  utility  affiliates  are  self-insured  for
          Worker's  Compensation  Insurance and the Parent (Ameren  Corporation)
          guarantees  the payment of  outstanding  claims of  subsidiaries  (the
          "Reserve").  At 12/31/02  the Reserve  amounted  to  $21,043,716.  The
          highest  amount  outstanding  at any time  during  the year  cannot be
          readily determined.


ITEM 4. ACQUISITION, REDEMPTION OR RETIREMENT OF SYSTEM SECURITIES

A.   Union Electric Company - Debt and Preferred Stock Retirements

     1.   On September 23, 2002,  this system  company  redeemed,  with proceeds
          from its issuance of $173 million 5.25% fall-away First Mortgage Bonds
          due 2012,  its $125  million  principal  amount  8.75% First  Mortgage
          Bonds.

     2.   On September 23, 2002,  this system  company  redeemed,  with proceeds
          from its issuance of $173 million 5.25% fall-away First Mortgage Bonds
          due 2012,  its $41.4375  million par amount  $1.735  series  Preferred
          Stock.

     3.   On December 16, 2002,  this system company  retired,  with cash,  upon
          maturity its $75 million principal amount 8.33% First Mortgage Bonds.


B. Central Illinois Public Company - Debt Retirements

     1.   On March 15,  2002,  this  system  company  retired,  with cash,  upon
          maturity  its $5 million  principal  amount  6.94%  Series  97-1 First
          Mortgage Bonds, Medium-Term Notes.

     2.   On September 15, 2002,  this system company  retired,  with cash, upon
          maturity  its $5 million  principal  amount  6.96%  Series  97-1 First
          Mortgage Bonds, Medium-Term Notes.

     3.   On September 15, 2002,  this system company  retired,  with cash, upon
          maturity  its  $23  million  principal  amount  6.75%  Series  Y First
          Mortgage Bonds.

                                       10


ITEM 5. INVESTMENTS IN SECURITIES OF NON-SYSTEM COMPANIES

A.   At 12/31/02 Ameren  Corporation had $589,563,249  invested in the following
     temporary cash  investments.  These  investments  were in short-term  money
     market funds.

     1.  Goldman Sachs funds: $57,783,665
     2.  Federated Investors funds: $66,821,132
     3.  Fidelity funds: $73,730,906
     4.  J.P. Morgan funds: $24,224,401
     5.  Dreyfus funds: $49,785,925
     6.  Bank One funds: $48,279,311
     7.  Northern Trust funds: $47,632,684
     8.  Citigroup funds: $55,950,615
     9.  Deutsche Bank funds: $49,923,554
     10. Credit Suisse funds: $68,197,821
     11. Bank of America funds: $47,233,237


B.   At 12/31/02  Union  Electric  Company had  $7,035,704 of cash invested in a
     Federated short-term money market fund.


                                       11


ITEM 6.  OFFICERS AND DIRECTORS - PART l.

The  positions of officers  and director of all system  companies as of December
31, 2002 were as follows:



NAME AND ADDRESS                                                  POSITION

AMEREN CORPORATION
                                                             
WARNER L. BAXTER                    ST. LOUIS, MO                   SVP
JERRE E. BIRDSONG                   ST. LOUIS, MO                   VP, T
WILLIAM E. CORNELIUS                ST. LOUIS, MO                   D
BAXTER GILLETTE                 ST. LOUIS, MO                   VP
CLIFFORD L. GREENWALT               SPRINGFIELD, IL                 D
THOMAS A. HAYS                      ST. LOUIS, MO                   D
THOMAS H. JACOBSEN              ST. LOUIS, MO                   D
RICHARD A. LIDDY                    ST. LOUIS, MO                   D
GORDON R. LOHMAN                    CHICAGO, IL                     D
RICHARD A. LUMPKIN                  MATTOON, IL                     D
MARTIN J. LYONS                     ST. LOUIS, MO                   C
JOHN PETERS MACCARTHY               ST. LOUIS, MO                   D
HANNE M. MERRIMAN                   WASHINGTON, DC                  D
PAUL L. MILLER, JR.                 ST. LOUIS, MO                   D
CHARLES W. MUELLER                  ST. LOUIS, MO                   D, CM, CEO
GARY L. RAINWATER                   ST. LOUIS, MO                   P, COO
HARVEY SALIGMAN                     ST. LOUIS, MO                   D
STEVEN R. SULLIVAN                  ST. LOUIS, MO                   VP, GC, S
JANET MCAFEE WEAKLEY            ST. LOUIS, MO                   D
JAMES W. WOGSLAND                   HAYDEN LAKE, ID                 D

Footnotes
---------

  Baxter Gillette resigned April 1, 2002
  Thomas Jacobsen died  July 20, 2002
  Janet McAfee Weakley retired April 23, 2002


UNION ELECTRIC COMPANY

RONALD D. AFFOLTER                  ST. LOUIS, MO                   VP
PAUL A. AGATHEN                     ST. LOUIS, MO                   D, SVP
WARNER L. BAXTER                    ST. LOUIS, MO                   D, SVP
JERRE E. BIRDSONG                   ST. LOUIS, MO                   VP, T
WILLIAM J. CARR                 ST. LOUIS, MO                   VP
DANIEL F. COLE                      ST. LOUIS, MO                   SVP
MARTIN J. LYONS                     ST. LOUIS, MO                   C
MICHAEL J. MONTANA                  ST. LOUIS, MO                   VP
CHARLES W. MUELLER                  ST. LOUIS, MO                   D, CM, CEO
CHARLES D. NASLUND                  ST. LOUIS, MO                   VP
GARY L. RAINWATER                   ST. LOUIS, MO                   D, P, COO

                                       12


GARRY L. RANDOLPH                   ST. LOUIS, MO                   SVP
WILLIAM C. SHORES                   ST. LOUIS, MO                   VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                   VP, GC, S
THOMAS R. VOSS                      ST. LOUIS, MO                   D, SVP
DAVID A. WHITELEY                   ST. LOUIS, MO                   SVP
RONALD C. ZDELLAR               ST. LOUIS, MO                   VP

Footnotes
---------

  William J. Carr retired July 1, 2002
  Ronald C. Zdellar elected VP on September 1, 2002


ELECTRIC ENERGY, INC.

JESSON A. BRADSHAW                  HOUSTON, TX                     D
DANIEL F. COLE                      ST. LOUIS, MO                   D
RICHARD W. EIMER, JR.               DECATUR, IL                     D
JAMES M. HELM                       JOPPA, IL                       S, T
R. ALAN KELLEY                      ST. LOUIS, MO                   D, CM
CHARLES D. NASLUND                  ST. LOUIS, MO                   D
ROBERT L. POWERS                    JOPPA, IL                       P
GARY L. RAINWATER                   ST. LOUIS, MO                   D
WILLIAM SHEPPARD                    JOPPA, IL                       VP
A. ROGER SMITH                      LOUISVILLE, KY                  D
PAUL W. THOMPSON                    LOUISVILLE, KY                  D
DAVID A. WHITELEY                   ST. LOUIS, MO                   D

JOPPA & EASTERN RAILROAD COMPANY

JEFFREY S. BERKBIGLER               CARBONDALE, IL                  S
JAMES M. HELM                       JOPPA, IL                       T
JOHN S. RENDLEMAN                   CARBONDALE, IL                  P, D

MET-SOUTH, INC.

JEFFREY S. BERKBIGLER               CARBONDALE, IL                  VP
CHERYL L. ERDMAN                    CARBONDALE, IL                  S
JAMES M. HELM                       JOPPA, IL                       T
JOHN S. RENDLEMAN                   CARBONDALE, IL                  P, D

MIDWEST ELECTRIC POWER, INC.

JEFFREY S. BERKBIGLER               CARBONDALE, IL                  S
JAMES M. HELM                       JOPPA, IL                       T
JOHN S. RENDLEMAN                   CARBONDALE, IL                  P, D

SOUTHERN MATERIALS TRANSFER, INC.

JEFFREY S. BERKBIGLER               CARBONDALE, IL                  P, D
JAMES M. HELM                       JOPPA, IL                       T
JOHN S. RENDLEMAN                   CARBONDALE, IL                  P, D

MASSAC ENTERPRISES, LLC

JOHN R. DALY                        JOPPA, IL                       MB
JEFFREY S. BERKBIGLER               CARBONDALE, IL                  MB
ELECTRIC ENERGY, INC.               JOPPA, IL                       MB

                                       13


JAMES M. HELM                       JOPPA, IL                       MB
JOHN S. RENDLEMAN                   CARBONDALE, IL                  MB

UNION ELECTRIC DEVELOPMENT CORPORATION

PAUL A. AGATHEN                     ST. LOUIS, MO                   D
WARNER L. BAXTER                    ST. LOUIS, MO                   D, SVP
JERRE E. BIRDSONG                   ST. LOUIS, MO                   D, VP, T
MARTIN J. LYONS                     ST. LOUIS, MO                   C
GARY L. RAINWATER                   ST. LOUIS, MO                   D, P
STEVEN R. SULLIVAN                  ST. LOUIS, MO                   D, VP, GC, S

ST. LOUIS EQUITY FUND 1988,  1990,  1991,  1992,  1993,  1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003

JERRE E. BIRDSONG                   ST. LOUIS, MO                   CM

CENTRAL ILLINOIS PUBLIC SERVICE COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D, SVP
WARNER L. BAXTER                      ST. LOUIS, MO                 D, SVP
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 SVP
MARTIN J. LYONS                       ST. LOUIS, MO                 C
MICHAEL J. MONTANA                    ST. LOUIS, MO                 VP
GILBERT W. MOORMAN                    SPRINGFIELD, IL               VP
CHARLES W. MUELLER                    ST. LOUIS, MO                 D
CRAIG D. NELSON                       ST. LOUIS, MO                 VP
GARY L. RAINWATER                     ST. LOUIS, MO                 D, P, CEO
GARY L. RANDOLPH                      ST. LOUIS, MO                 SVP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S
THOMAS R. VOSS                        ST. LOUIS, MO                 D, SVP
DAVID A. WHITELEY                     ST. LOUIS, MO                 SVP

CIPS ENERGY, INC.

GARY L. RAINWATER                     ST. LOUIS, MO                 D, P
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 D, VP, S, T

CIPSCO INVESTMENT COMPANY

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, CH, P
MARTIN J. LYONS                       ST. LOUIS, MO                 C, D
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

CIPSCO SECURITIES COMPANY

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, P, CEO
MARTIN J. LYONS                       ST. LOUIS, MO                 D, C
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

                                       14


CIPSCO VENTURE COMPANY

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, P, CEO
MARTIN J. LYONS                       ST. LOUIS, MO                 D, C
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

MATTOON ENTERPRISES PARK LLC

LEE R. NICKLOY                        ST. LOUIS, MO                 D

MACC, LLC

LEE R. NICKLOY                        ST. LOUIS, MO                 D

ILLINOIS EQUITY FUND 1992, 1994, 1996, 1998, 2000, 2002

LEE R. NICKLOY                        ST. LOUIS, MO                 D

CIPSCO LEASING COMPANY

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, P, CEO
MARTIN J. LYONS                       ST. LOUIS, MO                 D, C
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

CLC AIRCRAFT LEASING CO.

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, P, CEO
MARTIN J. LYONS                       ST. LOUIS, MO                 D, C
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

CLC LEASING CO. A

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, P, CEO
MARTIN J. LYONS                       ST. LOUIS, MO                 D, C
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

CIPSCO ENERGY COMPANY

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, P, CEO
MARTIN J. LYONS                       ST. LOUIS, MO                 C
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

                                       15


CEC-ACLP- CO.

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D, P, CEO
MARTIN J. LYONS                       ST. LOUIS, MO                 D, C
LEE R. NICKLOY                        ST. LOUIS, MO                 D, VP
CARLIN C. SCANLAN                     ST. LOUIS, MO                 T
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 S

AMEREN ENERGY, INC.

PAUL A. AGATHEN                       ST. LOUIS, MO                 D
WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D
BAXTER A. GILLETTE                ST. LOUIS, MO                 VP
CLARENCE J. HOPF                      ST. LOUIS, MO                 SVP
CHARLES W. MUELLER                    ST. LOUIS, MO                 D
GARY L. RAINWATER                 ST. LOUIS, MO                 D, P
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S
JAMES F. WHITESIDES               ST. LOUIS, MO                 PEO, P

Footnotes
---------

  Baxter Gillette resigned April 1, 2002
  Gary L. Rainwater elected P April 23, 2002
  James F. Whitesides resigned January 30, 2002


AMEREN SERVICES CO.

PAUL A. AGATHEN                       ST. LOUIS, MO                 D, SVP
WARNER L. BAXTER                      ST. LOUIS, MO                 D, SVP
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
CHARLES A. BREMER                     ST. LOUIS, MO                 VP
WILLIAM J. CARR                   ST. LOUIS, MO                 VP
DANIEL F. COLE                        ST. LOUIS, MO                 SVP
JIMMY L. DAVIS                        ST. LOUIS, MO                 VP
BAXTER A. GILLETTE                ST. LOUIS, MO                 VP
JEAN M. HANNIS                    ST. LOUIS, MO                 VP
MARTIN J. LYONS                       ST. LOUIS, MO                 C
RICHARD J. MARK                   ST. LOUIS, MO                 VP
DONNA K. MARTIN                   ST. LOUIS, MO                 VP
MICHAEL L. MENNE                  ST. LOUIS, MO                 VP
MICHAEL J. MONTANA                    ST. LOUIS, MO                 VP
CHARLES W. MUELLER                    ST. LOUIS, MO                 D, CM, CEO
MICHAEL G. MUELLER                    ST. LOUIS, MO                 VP
CRAIG D. NELSON                       ST. LOUIS, MO                 VP
GREGORY L. NELSON                     ST. LOUIS, MO                 VP
GARY L. RAINWATER                     ST. LOUIS, MO                 D, P, COO
J. KAY SMITH                          ST. LOUIS, MO                 VP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S
DAVID A. WHITELEY                     ST. LOUIS, MO                 SVP
SAMUEL E. WILLIS                      ST. LOUIS, MO                 VP
THOMAS R. VOSS                        ST. LOUIS, MO                 D, SVP
RONALD C. ZDELLAR                     ST. LOUIS, MO                 VP


                                       16


Footnotes
---------

  William J. Carr retired on July 1, 2002
  Baxter A. Gillette resigned on April 1, 2002
  Jean M. Hannis retired February 1, 2002
  Richard J. Mark elected VP January 2, 2002
  Donna K. Martin elected VP May 15, 2002
  Michael L. Menne elected VP September 1, 2002


AMEREN DEVELOPMENT COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D, SVP
WARNER L. BAXTER                      ST. LOUIS, MO                 D, SVP
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D
MARTIN J. LYONS                       ST. LOUIS, MO                 C
GARY L. RAINWATER                     ST. LOUIS, MO                 D, P
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S

AMEREN ERC, INC.

PAUL A. AGATHEN                       ST. LOUIS, MO                 D, SVP
WARNER L. BAXTER                      ST. LOUIS, MO                 D, SVP
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D, P
MARTIN J. LYONS                       ST. LOUIS, MO                 C
MICHAEL G. MUELLER                    ST. LOUIS, MO                 VP
GARY L. RAINWATER                     ST. LOUIS, MO                 D
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S

GATEWAY ENERGY SYSTEMS, L.C. AND AFFILIATES

WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D
CARLIN C. SCANLAN                     ST. LOUIS, MO                 D

AMEREN ENERGY COMMUNICATIONS, INC.

PAUL A. AGATHEN                       ST. LOUIS, MO                 D
WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D, P
MARTIN J. LYONS                   ST. LOUIS, MO                 C
GARY L. RAINWATER                     ST. LOUIS, MO                 D
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S
THOMAS R. VOSS                    ST. LOUIS, MO                 SVP

Footnotes
---------

  Martin J. Lyons elected C,  September 11, 2002
  Thomas R. Voss elected SVP September 11, 2002


AMEREN ENERGY RESOURCES COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D
WARNER L. BAXTER                      ST. LOUIS, MO                 D

                                       17



JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D, P
R. ALAN KELLEY                        ST. LOUIS, MO                 VP
MICHAEL L. MOEHN                  ST. LOUIS, MO                 VP
CHARLES W. MUELLER                    ST. LOUIS, MO                 D
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S

Footnotes
---------

  Michael E. Moehn elected VP September 1, 2002


MISSOURI CENTRAL RAILROAD COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 D
DANIEL F. COLE                        ST. LOUIS, MO                 D
R. ALAN KELLEY                        ST. LOUIS, MO                 D
MICHAEL G. MUELLER                    ST. LOUIS, MO                 D
ROBERT K. NEFF                        ST. LOUIS, MO                 P
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 D, VP, GC, S

ILLINOIS MATERIALS SUPPLY CO.

PAUL AGATHEN                          ST. LOUIS, MO                 D
WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D, P
R. ALAN KELLEY                        ST. LOUIS, MO                 VP
GREGORY L. NELSON                     ST. LOUIS, MO                 VP
MICHAEL J. MONTANA                    ST. LOUIS, MO                 VP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S
DAVID A. WHITELEY                     ST. LOUIS, MO                 SVP

AMEREN ENERGY MARKETING COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D
WARNER L. BAXTER                      ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D, P
ANDREW M. SERRI                       ST. LOUIS, MO                 VP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S

AMEREN ENERGY DEVELOPMENT COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 P
R. ALAN KELLEY                        ST. LOUIS, MO                 D, VP
ROBERT L. POWERS                      ST. LOUIS, MO                 VP
JERRY L. SIMPSON                      SPRINGFIELD, IL               VP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S
JAMES F. WHITESIDES               ST. LOUIS, MO                 VP

Footnotes
---------

  James F. Whitesides resigned January 30, 2002



                                       18



AMEREN ENERGY GENERATING COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D, SVP
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
WARNER L. BAXTER                      ST. LOUIS, MO                 D, SVP
DANIEL F. COLE                        ST. LOUIS, MO                 D, P
R. ALAN KELLEY                        ST. LOUIS, MO                 SVP
MARTIN J. LYONS                       ST. LOUIS, MO                 C
MICHAEL J. MONTANA                    ST. LOUIS, MO                 VP
ROBERT L. POWERS                      ST. LOUIS, MO                 VP
GARY L. RANDOLPH                      ST. LOUIS, MO                 SVP
JERRY L. SIMPSON                      SPRINGFIELD, IL               VP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S
THOMAS R. VOSS                        ST. LOUIS, MO                 SVP
DAVID A. WHITELEY                     ST. LOUIS, MO                 SVP

AMEREN ENERGY FUELS AND SERVICES COMPANY

PAUL A. AGATHEN                       ST. LOUIS, MO                 D
WARNER L. BAXTER                      ST. LOUIS, MO                 D, SVP
JERRE E. BIRDSONG                     ST. LOUIS, MO                 VP, T
DANIEL F. COLE                        ST. LOUIS, MO                 D, P
MARTIN J. LYONS                       ST. LOUIS, MO                 C
MICHAEL G. MUELLER                    ST. LOUIS, MO                 VP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S

AFS DEVELOPMENT COMPANY, LLC 

JERRE E. BIRDSONG                     ST. LOUIS, MO                 T
DANIEL F. COLE                        ST. LOUIS, MO                 P
MICHAEL G. MUELLER                    ST. LOUIS, MO                 VP
STEVEN R. SULLIVAN                    ST. LOUIS, MO                 VP, GC, S

Footnotes
---------

 Limited  Liability  Company  organized and officers elected on September 6,
     2002.


COWBOY RAILROAD DEVELOPMENT COMPANY, LLC 

ROBERT K. NEFF                        ST. LOUIS, MO                 M

Footnotes
---------

 Limited  Liability  Company  organized and managers elected on February 15,
     2002.



NOTE:  Positions are indicated above by the following symbols:

C       --    Controller
CEO     --    Chief Executive Officer
CM      --    Chairman
COO     --    Chief Operating Officer
D       --    Director
GC      --    General Counsel
M       --    Manager
MB      --    Member


                                       19

P       --    President
PEO     --    Principal Executive Officer
S       --    Secretary
SVP     --    Senior Vice President
T       --    Treasurer
VP      --    Vice President

ITEM 6.  OFFICERS AND DIRECTORS - PART ll.

Financial Connections - The following is a list, as of December 31, 2002, of all
officers and  directors of each system  company who have  financial  connections
within the provisions of Section 17(c) of the Public Utility Holding Company Act
of 1935.



                                                                    Position
                                                                    Held in        Applicable
Name of Officer                                                     Financial      Exemption
 or Director          Name and Location of Financial Institution    Institution      Rules
    (1)                                 (2)                             (3)           (4)
---------------       ------------------------------------------    -----------   -----------

                                 AMEREN CORPORATION
                                                                         
 Richard A. Lumpkin       First Mid-Illinois Bancshares Inc.         Director      Rule 70(a)
                          First Mid-Illinois Bank & Trust NA         Director      Rule 70(a)



ITEM 6.  OFFICERS AND DIRECTORS - PART lll.

(a) and  (b)  Directors'  and  Executive  Officers'  Compensation  and  Security
              Interests.

Information concerning directors, the chief executive officer and the four other
most highly  compensated  executive  officers (as defined by  regulations of the
Securities and Exchange  Commission) of Ameren  Corporation  System companies is
incorporated  by  reference  to "Item (1):  Election  of  Directors",  "Security
Ownership of Management" and "Executive  Compensation"  in Ameren  Corporation's
2003 definitive proxy  statement,  a copy of which is included as Exhibit A.4 to
this Form U5S.

(c) Directors' and Executive  Officers'  Contracts and Transactions  with System
    Companies.

None.

(d) Indebtedness of Directors or Executive Officers to System Companies.

None.

(e) Directors'   and   Executive   Officers'   Participation   in   Bonus   and
    Profit-Sharing Arrangements and Other Benefits.

Information concerning directors, the chief executive officer and the four other
most highly  compensated  executive  officers (as defined by  regulations of the
Securities and Exchange  Commission) of Ameren  Corporation  System companies is
incorporated  by  reference  to "Item  (1):  Election  of  Directors","Executive
Compensation"  and  "Arrangements  With  Named  Executive  Officers"  in  Ameren
Corporation's  2003 definitive proxy  statement,  a copy of which is included as
Exhibit A.4 to this Form U5S.

                                       20



(f) Directors' and Executive Officers' rights to Indemnity.

The state laws under which each of the System companies is incorporated  provide
broadly  for  indemnification  of  directors  and  officers  against  claims and
liabilities  against  them in  their  capacities  as  such.  Each of the  System
companies'  charters or by-laws also provides for  indemnification  of directors
and  officers.  In  addition,  directors  and  executive  officers of the System
companies are insured under directors' and officers'  liability  policies issued
by Great American Insurance Company,  Reliance National Insurance Company,  Gulf
Insurance  Company and Executive Risk  Indemnity,  Inc. The policies are for the
period January 1, 1998 to March 1, 2003.  Ameren  Corporation has entered into a
standard form of indemnity agreement with each of its directors and officers.

                                       21


ITEM 7.   CONTRIBUTIONS AND PUBLIC RELATIONS

1. Political
   ---------

Central Illinois Public Service Company (d/b/a AmerenCIPS),  by authorization of
its Board of Directors,  matched employee and retiree  contributions made to the
AmerenCIPS  Political  Action  Committee  (PAC) in the  amount of  $40,000.  The
AmerenCIPS PAC is a political  action  committee  established in accordance with
the law of the state of Illinois  for the sole purpose of  supporting  state and
local  political  candidates  in the state of  Illinois.  The  $40,000  matching
contribution  to the  AmerenCIPS  PAC was made and reported in  accordance  with
Illinois law.

Union  Electric  Company  (d/b/a  AmerenUE),  by  authorization  of its Board of
Directors,  matched employee contributions made to the AmerenUE Political Action
Committee  (PAC) in the amount of  $37,593.51.  The AmerenUE PAC is a continuing
committee  established in accordance  with the laws of the state of Missouri for
the sole purpose of supporting state and local political candidates in the state
of Missouri.  The $37,593.51 matching  contribution to the AmerenUE PAC was made
and reported in accordance with Missouri Law.

2. Citizens Groups
   ---------------

None for Illinois

None for Missouri

   Public Relations Counsel
   ------------------------

Clarke & Company was  retained to advise  AmerenUE on general  public  relations
matters. From the time period January 1, 2002 - December 31, 2002, AmerenUE made
payments to Clarke & Company in the amount of $294,214.06 for their services.

                                       22





ITEM 8.  SERVICE, SALES AND CONSTRUCTION CONTRACTS

Part I.  Contracts for services, including engineering or construction services, or goods supplied or sold
between System companies are as follows:

                                                      Calendar Year 2002

                                                                                                                     Compensation
  Nature of Transactions          Company Performing Service                Company Receiving Service                     (4)
           (1)                                (2)                                      (3)                          (in thousands)
                                                                                                          
Equipment Sales             AmerenEnergy Fuels & Services            AmerenUE                                              $972
Equipment Sales             AmerenUE                                 AmerenCIPS                                             207
Equipment Sales             AmerenUE                                 AmerenEnergy Communications, Inc.                       32
Materials and Supplies      Illinois Materials Supply Co.            AmerenUE                                            54,535
Materials and Supplies      Illinois Materials Supply Co.            AmerenCIPS                                              25
Misc. Services              AmerenCIPS                               AmerenEnergy Marketing Company                       1,232
Misc. Services              AmerenCIPS                               Ameren Corporation                                      59
Misc. Services              AmerenCIPS                               CIPSCO Investment                                       56
Misc. Services              AmerenCIPS                               Illinois Materials Supply Co.                            2
Misc. Services              AmerenCIPS                               AmerenUE                                               557
Misc. Services              AmerenUE                                 Ameren Corporation                                       8
Misc. Services              AmerenUE                                 AmerenEnergy                                             8
Misc. Services              AmerenUE                                 AmerenCIPS                                           1,682
Misc. Services              AmerenUE                                 AmerenERC                                                4
Misc. Services              AmerenUE                                 AmerenEnergy Marketing Company                           3
Misc. Services              AmerenUE                                 Union Electric Development                               2
Misc. Services              AmerenUE                                 AmerenDevelopment                                        9
Misc. Services              AmerenUE                                 AmerenEnergy Fuels & Services                          475
Misc. Services              AmerenUE                                 Illinois Materials Supply Co.                            5
Misc. Services              AmerenUE                                 AmerenEnergy Communications, Inc.                       54
Misc. Services              AmerenEnergy Fuels & Services            AmerenCIPS                                             997
Misc. Services              AmerenEnergy Fuels & Services            Ameren Corporation                                      82
Misc. Services              AmerenEnergy Fuels & Services            AmerenUE                                             4,534
Transmission Services       AmerenUE                                 AmerenEnergy Marketing Company                         942
Transmission Services       AmerenEnergy                             AmerenEnergy Marketing Company                       1,383
Misc. Services              AmerenEnergy                             AmerenEnergy Marketing Company                         812
Misc. Services              AmerenEnergy Communications, Inc.        AmerenEnergy Marketing Company                           7
Misc. Services              AmerenEnergy Communications, Inc.        AmerenCIPS                                               5
Misc. Services              AmerenEnergy Communications, Inc.        AmerenUE                                                32
Misc. Services              AmerenEnergy Marketing Company           AmerenEnergy                                           340
Misc. Services              CIPSCO Investment                        AmerenCIPS                                              55

Part II.                   None.

Part III.                  None.



                                       23



ITEM 9.  WHOLESALE GENERATORS AND FOREIGN UTILITY COMPANIES

Filed confidentially as Appendix A and on Form SE.

ITEM 10.  FINANCIAL STATEMENTS AND EXHIBITS

FINANCIAL STATEMENTS

Filed confidentially as Appendix B on Form SE.



                                                       NOTES TO FINANCIAL STATEMENTS
                                        
Ameren Corporation                          Reference is made to "Notes to Consolidated Financial Statements"
                                            contained on pages 39 through 64 in the Ameren 2002 Annual Report
                                            to Shareholders, which information is incorporated by reference.


Union Electric Company (AmerenUE)           Reference is made to "Notes to Financial Statements" contained on
                                            pages 36 through 60 in the AmerenUE 2002 Annual Report, which
                                            information is incorporated by reference.


Central Illinois Public Service Company
(AmerenCIPS)                                Reference is made to "Notes to Financial Statements" contained on
                                            pages 29 through 47 in the AmerenCIPS 2002 Annual Report, which
                                            information is incorporated by reference.


Ameren Energy Generating Company
(Generating Company)                        Reference is made to "Notes to Financial Statements" contained on
                                            pages 32 through 50 in the Generating Company 2002 Annual Report,
                                            which information is incorporated by reference.





                                       24



EXHIBITS

The following  exhibits are  incorporated by reference to the indicated SEC file
number, unless a single asterisk appears next to the exhibit reference. A single
asterisk indicates exhibits which are filed herewith.

EXHIBIT
NUMBER                           DESCRIPTION

     A. ANNUAL REPORTS FILED UNDER THE SECURITIES AND EXCHANGE ACT OF 1934

        A.1    2002 Annual Report on Form 10-K for Ameren Corporation. (File No.
               001-14756)

        A.2    2002  Annual  Report on Form  10-K for  Central  Illinois  Public
               Service Company. (File No. 001-03672)

        A.3    2002 Annual Report on Form 10-K for Union Electric Company. (File
               No. 001-02967)

        A.4    2002  Annual  Report on Form 10-K for  Ameren  Energy  Generating
               Company. (File No. 333-56594)

      * A.5    2003 Proxy Statement of Ameren Corporation. (File No. 001-14756)

        A.6    2003 Proxy Statement of Central  Illinois Public Service Company.
               (File No. 001-03672)

        A.7    2003  Proxy  Statement  of  Union  Electric  Company.  (File  No.
               001-02967)

     B. CHARTERS,  ARTICLES OF INCORPORATION,  TRUST AGREEMENTS,  BY-LAWS, AND
        OTHER FUNDAMENTAL DOCUMENTS OF ORGANIZATION

        AMEREN CORPORATION (Ameren)

        B1.1   Agreement and Plan of Merger, dated as of August 11, 1995, by and
               among Ameren,  CIPSCO Incorporated,  Union Electric Company d/b/a
               AmerenUE  (AmerenUE),  and Arch Merger  Inc.  (June 30, 1995 Form
               10-Q/A (Amendment No. 1), Exhibit 2(a)).

        B1.2   Restated  Articles of Incorporation of Ameren (File No. 33-64165,
               Annex F).

        B1.3   Certificate  of  Amendment  to  Ameren's   Restated  Articles  of
               Incorporation  filed with the  Secretary of State of the State of
               Missouri on December 14, 1998 (1998 Form 10-K, Exhibit 3(i)).

        B1.4   By-Laws  of Ameren as  amended to  December  31,  1997 (1997 Form
               10-K, Exhibit 3(ii)).

        UNION ELECTRIC COMPANY (AmerenUE)

        B2.1   Restated Articles of Incorporation of AmerenUE, as filed with the
               Secretary of State of the State of Missouri  (1993  AmerenUE Form
               10-K, Exhibit 3(i)).

        B2.2   By-Laws of AmerenUE as amended to August 23, 2001  (September 30,
               2001 AmerenUE Form 10-Q, Exhibit 3(ii)).

        CENTRAL ILLINOIS PUBLIC SERVICE COMPANY (AmerenCIPS)

        B3.1   Restated  Articles of Incorporation of AmerenCIPS (March 31, 1994
               AmerenCIPS Form 10-Q, Exhibit 3(b)).

        B3.2   By-Laws of  AmerenCIPS  as  amended  effective  August  26,  1999
               (September 30, 1999 Form 10-Q, Exhibit 3(ii)).

                                       25


     B. CHARTERS,  ARTICLES OF  INCORPORATION,  TRUST AGREEMENTS,  BY-LAWS,  AND
        OTHER FUNDAMENTAL DOCUMENTS OF ORGANIZATION (Continued)

        AMEREN ENERGY GENERATING COMPANY (GENERATING COMPANY)

        B4.1   Articles of Incorporation of Generating  Company,  filed March 2,
               2000  (incorporated  by  reference  to Exhibit 3.1 to  Generating
               Company's Registration Statement on Form S-4 (Commission File No.
               333-56594)).

        B4.2   Amendment to Articles of  Incorporation  of  Generating  Company,
               filed April 19, 2000 (incorporated by reference to Exhibit 3.2 to
               Generating   Company's   Registration   Statement   on  Form  S-4
               (Commission File No. 333-56594)).

        B4.3   By-Laws of  Generating  Company  (incorporated  by  reference  to
               Exhibit 3.3 to Generating Companys Registration Statement on Form
               S-4 (Commission File No. 333-56594)).

        AMEREN ENERGY RESOURCES COMPANY (f/k/a AMEREN INTERMEDIATE HOLDING CO.
        (RESOURCES COMPANY)

        B5.1   Articles of Incorporation of Resources Company filed September 3,
               1999 (1999 U5S, Exhibit B.1).

        B5.2   Articles  of  Amendment  filed  March 2, 2000 (1999 U5S,  Exhibit
               B.1).

        B5.3   By-Laws of the  Resources  Company  effective  September 15, 1999
               (1999 U5S, Exhibit B.1).

        MISSOURI CENTRAL RAILROAD COMPANY (RAILROAD COMPANY)

        B6.1   Certificate of  Incorporation  of Railroad  Company filed June 6,
               1997 (2000 U5S, Exhibit B.1).

        B6.2   Certificate  of Amendment of Railroad  Company  dated October 19,
               1999 (2000 U5S, Exhibit B.1).

        B6.3   Amended and Restated  By-Laws of Railroad Company dated September
               30, 1999 (2000 U5S, Exhibit B.1).

        ENPORION, INC. (ENPORION)

        B7.1   Amended and Restated  Certificate  of  Incorporation  of Enporion
               filed November 6, 2000 (2000 U5S, Exhibit B.2).

        B7.2   Amended and Restated  By-Laws of Enporion  dated November 6, 2000
               (2000 U5S, Exhibit B.2).

        ILLINOIS MATERIALS SUPPLY CO. (IMS)

        B8.1   Articles  of  Incorporation  of IMS filed  January 20, 2000 (2000
               U5S, Exhibit B.3).

        B8.2   By-Laws of IMS dated January 20, 2000 (2000 U5S, Exhibit B.3).

        AMEREN ENERGY MARKETING COMPANY (MARKETING COMPANY)

        B9.1   Articles of  Incorporation  of Marketing  Company  filed March 2,
               2000 (2000 U5S, Exhibit B.4).

        B9.2   By-Laws  of  Marketing  Company  dated  March 2, 2000  (2000 U5S,
               Exhibit B.4).
                                       26



     B. CHARTERS,  ARTICLES OF INCORPORATION,  TRUST AGREEMENTS,  BY-LAWS, AND
        OTHER FUNDAMENTAL DOCUMENTS OF ORGANIZATION (Continued)

        AMEREN ENERGY DEVELOPMENT COMPANY (DEVELOPMENT COMPANY)

        B10.1  Articles of Incorporation of Development  Company filed March 27,
               2000 (2000 U5S, Exhibit B.5).

        B10.2  Articles of Amendment of Development Company filed April 19, 2000
               (2000 U5S, Exhibit B.5).

        B10.3  Amended  By-Laws of Development  Company  dated  March 27,  2000
               (2000 U5S, Exhibit B.5).

        AMEREN ENERGY GENERATING COMPANY (GENERATING COMPANY)

        B11.1  Articles of  Incorporation  of Generating  Company filed March 2,
               2000 (2000 U5S, Exhibit B.6).

        B11.2  By-Laws  of  Generating  Company  dated  March 2, 2000 (2000 U5S,
               Exhibit B.6).

        AMEREN ENERGY FUELS AND SERVICES COMPANY (AFS)

        B12.1  Articles of  Incorporation  of AFS filed September 18, 2000 (2000
               U5S, Exhibit B.7).

        B12.2  By-Laws of AFS dated September 18, 2000 (2000 U5S, Exhibit B.7).

        COWBOY RAILROAD DEVELOPMENT COMPANY, LLC (COWBOY)

      * B13.1  Articles of Organization of Cowboy filed February 15, 2002 (filed
               herewith on Form SE)

      * B13.2  Operating Agreement of Cowboy (filed herewith on Form SE).

        AFS DEVELOPMENT COMPANY, LLC (AFSD)

      * B14.1  Articles of  Organization of AFSD filed September 6, 2002 (filed
               herewith on Form SE).

      * B14.2  Operating Agreement of AFSD (filed herewith on Form SE).

     C. INSTRUMENTS  DEFINING  THE  RIGHTS  OF  SECURITY  HOLDERS,   INCLUDING
        INDENTURES

        AMEREN CORPORATION (AMEREN)

        C1.1   Agreement,  dated as of  October  9,  1998,  between  Ameren  and
               EquiServe  Trust  Company,  N.A. (as  successor to First  Chicago
               Trust Company of New York),  as Rights Agent,  which includes the
               form of Certificate  of  Designation  of the Preferred  Shares as
               Exhibit  A, the form of Rights  Certificate  as Exhibit B and the
               Summary of Rights as Exhibit C (October 14, 1998 Ameren Form 8-K,
               Exhibit 4).

        C1.2   Indenture  of  Ameren  with The  Bank of New  York,  as  Trustee,
               relating to senior debt  securities  dated as of December 1, 2001
               (Ameren's Senior Indenture) (File No. 333-81774, Exhibit 4.5).

        C1.3   Company order  relating to  $150,000,000  Floating Rate Notes due
               December  12,  2003  issued  under  Ameren's   Senior   Indenture
               (including the forms of notes)(File No. 333-81774, Exhibit 4.6).

        C1.4   Company order relating to  $100,000,000  5.70% Notes due February
               1, 2007 issued under  Ameren's  Senior  Indenture  (including the
               forms of notes) (File No. 333-81774, Exhibit 4.7).

        C1.5   Company  order  relating to  $345,000,000  Notes due May 15, 2007
               issued under Ameren's  Senior  Indenture  (including the forms of
               notes and  certificate  of  normal  unit)  (File  No.  333-81774,
               Exhibit 4.8).

                                       27

     C. INSTRUMENTS   DEFINING  THE  RIGHTS  OF  SECURITY  HOLDERS,   INCLUDING
        INDENTURES (Continued)

        C1.6   Purchase  Contract  Agreement  dated as of March 1, 2002  between
               Ameren  and The Bank of New York,  as  purchase  contract  agent,
               relating  to  the  13,800,000  9.75%  Adjustable  Conversion-Rate
               Equity   Security  Units  (Equity   Security   Units)  (File  No.
               333-81774, Exhibit 4.15).

        C1.7   Pledge Agreement dated as of March 1, 2002 among Ameren, The Bank
               of New York, as purchase  contract agent and BNY Trust Company of
               Missouri,  as collateral  agent,  custodial  agent and securities
               intermediary,  relating  to the Equity  Security  Units (File No.
               333-81774, Exhibit 4.16).

        UNION ELECTRIC COMPANY (AMERENUE)

        C2.1   Order of the Securities and Exchange Commission dated October 16,
               1945 in File No. 70-1154 permitting the issue of Preferred Stock,
               $3.70 Series (File No. 2-27474, Exhibit 3-E).

        C2.2   Order of the Securities and Exchange  Commission  dated April 30,
               1946 in File No. 70-1259 permitting the issue of Preferred Stock,
               $3.50 Series (File No. 2-27474, Exhibit 3-F).

        C2.3   Order of the Securities and Exchange Commission dated October 20,
               1949 in File No. 70-2227 permitting the issue of Preferred Stock,
               $4.00 Series (File No. 2-27474, Exhibit 3-G).

        C2.4   Indenture  of Mortgage  and Deed of Trust of AmerenUE  dated June
               15,  1937  (Mortgage),   as  amended  May  1,  1941,  and  Second
               Supplemental  Indenture  dated  May 1,  1941  (File  No.  2-4940,
               Exhibit B-1).

        C2.5   Supplemental Indentures to Mortgage

                Dated as of                File Reference            Exhibit No.
                -----------                --------------            -----------

               April 1, 1971             Form 8-K, April 1971             6
               February 1, 1974          Form 8-K, February 1974          3
               July 7, 1980              2-69821                          4.6
               December 1, 1991          33-45008                         4.4
               December 4, 1991          33-45008                         4.5
               January 1, 1992           Form 10-K, 1991                  4.6
               October 1, 1992           Form 10-K, 1992                  4.6
               December 1, 1992          Form 10-K, 1992                  4.7
               February 1, 1993          Form 10-K, 1992                  4.8
               May 1, 1993               Form 10-K, 1993                  4.6
               August 1, 1993            Form 10-K, 1993                  4.7
               October 1, 1993           Form 10-K, 1993                  4.8
               January 1, 1994           Form 10-K, 1993                  4.9
               February 1, 2000          Form 10-K, 2000                  4.1
               August 15, 2002           Form 8-K, August 22, 2002        4.3

        C2.6   Indenture  (for  unsecured   subordinated   debt  securities)  of
               AmerenUE  dated as of December 1, 1996 (1996  AmerenUE Form 10-K,
               Exhibit 4.36).

        C2.7   Loan  Agreement  dated as of December  1, 1991  between the State
               Environmental  Improvement  and Energy  Resources  Authority  and
               AmerenUE,  together with  Indenture of Trust dated as of December
               1, 1991 between the  Authority  and UMB Bank,  N.A., as successor
               trustee (1992 AmerenUE Form 10-K, Exhibit 4.37).

        C2.8   Loan  Agreement  dated as of December 1, 1992,  between the State
               Environmental  Improvement  and Energy  Resources  Authority  and
               AmerenUE,  together with  Indenture of Trust dated

                                       28

     C. INSTRUMENTS   DEFINING  THE  RIGHTS  OF  SECURITY  HOLDERS,   INCLUDING
        INDENTURES

        UNION ELECTRIC COMPANY (Continued)

               as of December 1, 1992 between the Authority and UMB Bank,  N.A.,
               as successor trustee (1992 AmerenUE Form 10-K, Exhibit 4.38).

        C2.9   Fuel Lease dated as of February  24, 1981  between  AmerenUE,  as
               lessee,  and Gateway Fuel Company,  as lessor,  covering  nuclear
               fuel (1980 AmerenUE Form 10-K, Exhibit 10.20).

        C2.10  Amendments  to Fuel Lease dated as of May 8, 1984 and October 15,
               1984, respectively, between AmerenUE, as lessee, and Gateway Fuel
               Company,  as lessor,  covering  nuclear  fuel  (Registration  No.
               2-96198, Exhibit 4.28).

        C2.11  Amendment  to Fuel Lease  dated as of October  15,  1986  between
               AmerenUE,  as  lessee,  and  Gateway  Fuel  Company,  as  lessor,
               covering  nuclear fuel  (September  30, 1986  AmerenUE Form 10-Q,
               Exhibit 4.3).

        C2.12  Series 1998A Loan Agreement dated as of September 1, 1998 between
               The  State   Environmental   Improvement  and  Energy   Resources
               Authority of the State of Missouri and  AmerenUE  (September  30,
               1998 AmerenUE Form 10-Q, Exhibit 4.28).

        C2.13  Trust  Indenture - Environmental  Bonds,  Series 1998A (1998 U5S,
               Exhibit C1.2).

        C2.14  Series  1998B  Loan  Agreement  dated  as of  September  1,  1998
               between The State Environmental  Improvement and Energy Resources
               Authority of the State of Missouri and  AmerenUE  (September  30,
               1998 AmerenUE Form 10-Q, Exhibit 4.29).

        C2.15  Trust  Indenture - Environmental  Bonds,  Series 1998B (1998 U5S,
               Exhibit C1.3).

        C2.16  Series  1998C  Loan  Agreement  dated  as of  September  1,  1998
               between The State Environmental  Improvement and Energy Resources
               Authority of the State of Missouri and  AmerenUE  (September  30,
               1998 AmerenUE Form 10-Q, Exhibit 4.30).

        C2.17  Trust  Indenture - Environmental  Bonds,  Series 1998C (1998 U5S,
               Exhibit C1.5).

        C2.18  Trust Indenture -  Environmental  Improvement  Revenue  Refunding
               Bonds, Series 2000A, 2000B and 2000C (1999 U5S, Exhibit C1.1).

        C2.19  Loan  Agreement -  Environmental  Improvement  Revenue  Refunding
               Bonds, Series 2000A, 2000B and 2000C (1999 U5S, Exhibit C1.2).

        C2.20  Indenture  dated as of August 15, 2002, from AmerenUE to The Bank
               of  New  York,  as  Trustee,  relating  to  senior  secured  debt
               securities (including the forms of senior secured debt securities
               as exhibits)  (AmerenUE  Form 8-K dated August 22, 2002,  Exhibit
               4.1).

        C2.21  AmerenUE  company  order dated August 22, 2002  establishing  the
               5.25%  Senior  Secured  Notes due 2012  (AmerenUE  Form 8-K dated
               August 22, 2002, Exhibit 4.2).

        CENTRAL ILLINOIS PUBLIC SERVICE COMPANY (AMERENCIPS)

        C3.1   Indenture  of Mortgage  or Deed of Trust  dated  October 1, 1941,
               from AmerenCIPS to Continental  Illinois  National Bank and Trust
               Company of Chicago and Edmond B. Stofft,  as Trustees (U.S.  Bank
               Trust National  Association  and Patrick J. Crowley are successor
               Trustees)  (Exhibit  2.01  in  File  No.  2-60232).  Supplemental
               Indentures  dated,  respectively  September  1, 1947,  January 1,
               1949, February 1, 1952, September 1, 1952, June 1, 1954, February
               1, 1958, January 1, 1959, May 1, 1963, May 1, 1964, June 1, 1965,
               May 1, 1967, April 1, 1970, April 1, 1971, September 1, 1971, May
               1, 1972,  December 1, 1973, March 1, 1974, April 1, 1975,

                                       29


     C. INSTRUMENTS  DEFINING  THE  RIGHTS  OF  SECURITY  HOLDERS,   INCLUDING
        INDENTURES

        CENTRAL ILLINOIS PUBLIC SERVICE COMPANY (Continued)

               October 1, 1976,  November  1, 1976,  October 1, 1978,  August 1,
               1979,  February 1, 1980,  February 1, 1986, May 15, 1992, July 1,
               1992,  September 15, 1992, April 1, 1993, June 1, 1995, March 15,
               1997,  June 1, 1997,  December  1, 1998 and June 1, 2001  between
               AmerenCIPS  and the Trustees  under the  Indenture of Mortgage or
               Deed of Trust referred to above (Amended Exhibit 7(b) in File No.
               2-7341;  Second Amended  Exhibit 7.03 in File No. 2-7795;  Second
               Amended Exhibit 4.07 in File No. 2-9353;  Amended Exhibit 4.05 in
               file  No.  2-9802;  Amended  Exhibit  4.02 in File  No.  2-10944;
               Amended Exhibit 2.02 in File No. 2-13866; Amended Exhibit 2.02 in
               File  No.  2-14656;  Amended  Exhibit  2.02 in  File  No.2-21345;
               Amended Exhibit 2.02 in File No. 2-22326; Amended Exhibit 2.02 in
               File No.  2-23569;  Amended  Exhibit  2.02 in File  No.  2-26284;
               Amended Exhibit 2.02 in File No. 2-36388; Amended Exhibit 2.02 in
               File No.  2-39587;  Amended  Exhibit  2.02 in File  No.  2-41468;
               Amended  Exhibit 2.02 in File No.  2-43912;  Exhibit 2.03 in File
               No. 2-60232;  Amended  Exhibit 2.02 in File No. 2-50146;  Amended
               Exhibit 2.02 in File No. 2-52886;  Second Amended Exhibit 2.04 in
               File No.  2-57141;  Amended  Exhibit  2.04 in File  No.  2-57557;
               Amended Exhibit 2.06 in File No. 2-62564; Exhibit 2.02(a) in File
               No. 2-65914;  Amended  Exhibit  2.02(a) in File No. 2-66380;  and
               Amended  Exhibit 4.02 in File No.  33-3188;  Exhibit 4.02 to Form
               8-K dated May 15,  1992;  Exhibit  4.02 to Form 8-K dated July 1,
               1992;  Exhibit 4.02 to Form 8-K dated September 15, 1992; Exhibit
               4.02 to Form 8-K dated March 30,  1993;  Exhibit 4.03 to Form 8-K
               dated  June 5,  1995;  Exhibit  4.03 to Form 8-K dated  March 15,
               1997;  Exhibit 4.03 to Form 8-K dated June 1, 1997;  Exhibit 4.2,
               in File No.  333-59438;  and  Exhibit  4.1 to June 30,  2001 Form
               10-Q.)

        C3.2   Indenture  dated as of  December 1, 1998 from  AmerenCIPS  to The
               Bank of New York  relating to Senior  Notes,  5.375% due 2008 and
               6.125% due 2028 (Exhibit 4.4, in File No. 333-59438).

        C3.3   Trust  Indenture - Pollution  Control  Revenue  Refunding  Bonds,
               Series 2000A (1999 U5S, Exhibit C2.1).

        C3.4   Loan  Agreement  - Pollution  Control  Revenue  Refunding  Bonds,
               Series 2000A (1999 U5S, Exhibit C2.2).

        AMEREN ENERGY GENERATING COMPANY (GENERATING COMPANY)

        C4.1   Indenture,  dated as of  November  1,  2000,  between  Generating
               Company and The Bank of New York, as Trustee,  relating to senior
               notes (the  "Generating  Indenture")  (Exhibit 4.1 to  Generating
               Company's Registration Statement on Form S-4 (Commission File No.
               333-56594)).

        C4.2   First Supplemental  Indenture to the Generating Indenture,  dated
               as of  November  1,  2000  (Exhibit  4.2  to  Generating  Company
               Registration   Statement  on  Form  S-4   (Commission   File  No.
               333-56594)).

        C4.3   Form  of  Second   Supplemental   Indenture  to  the   Generating
               Indenture,  dated as of June 12, 2001  (Exhibit 4.3 to Generating
               Company's Registration Statement on Form S-4 (Commission File No.
               333-56594)).

        C4.5   Third Supplemental  Indenture to the Generating Indenture,  dated
               as of  June  1,  2002  (including  as  exhibit  the  form of Note
               (Exhibit 4.1 to  Generating  Company's  quarterly  report on Form
               10-Q for the quarter ended June 30, 2002).

                                       30



      D. AGREEMENT  ALLOCATING  CONSOLIDATED  INCOME  TAX  LIABILITY  BY  AMEREN
         CORPORATION AND SUBSIDIARIES

     *F. SCHEDULES SUPPORTING ITEMS OF THE REPORT

         F-1   The opinion of the independent accountants as to the consolidated
               financial  statements  and the  footnotes are included in Exhibit
               A.1, which is incorporated by reference.

          F-2  Supporting  plant,  depreciation and reserve  schedules for Union
               Electric  Company  from FERC Form No. 1 - Annual  Report of Major
               Electric  Utilities,  Licensees,  and  Others,  FERC Form No. 2 -
               Annual Report of Natural Gas Companies, and Form 21 ILCC - Annual
               Report  of  Electric  Utilities   Licensees  and/or  Natural  Gas
               Utilities as follows:  (filed confidentially on Form SE, Appendix
               B)

               Summary  of  Utility  Plant  and   Accumulated   Provisions   for
               Depreciation, Amortization and Depletion (Electric & Gas)

               Nuclear Fuel Materials

               Electric Plant in Service

               Gas Plant in Service

               Electric Plant Held for Future Use

               Construction Work in Progress - Electric

               Construction Work in Progress - Gas

               Accumulated Provision for Depreciation of Electric Utility Plant

               Accumulated Provision for Depreciation of Gas Utility Plant

               Gas Stored

               Non-utility Property

               Accumulated   Provision  for  Depreciation  and  Amortization  of
               Non-utility Property

               Depreciation and Amortization of Electric Plant

               Depreciation, Depletion and Amortization of Gas Plant


          F-3  Supporting plant,  depreciation and reserve schedules for Central
               Illinois  Public  Service  Company  from FERC Form No. 1 - Annual
               Report of Major  Electric  Utilities,  Licensees,  and Others and
               Form 21 ILCC - Annual  Report  of  Electric  Utilities  Licensees
               and/or Natural Gas Utilities as follows: (filed confidentially on
               Form SE, Appendix B)

               Summary  of  Utility  Plant  and   Accumulated   Provisions   for
               Depreciation, Amortization and Depletion (Electric & Gas)

               Electric Plant in Service

               Gas Plant in Service



                                       31

               Manufactured Gas Production Plant - Supplemental Schedule

               Electric Plant Held for Future Use

               Gas Plant Held for Future Use

               Construction Work in Progress - Electric

               Construction Work in Progress - Gas

               Accumulated Provision for Depreciation of Electric Utility Plant

               Accumulated Provision for Depreciation of Gas Utility Plant

               Gas Stored

               Non-utility Property

               Accumulated   Provision  for  Depreciation  and  Amortization  of
               Non-utility Property

               Depreciation and Amortization of Electric Plant

               Depreciation, Depletion and Amortization of Gas Plant


          F-4  Supporting  plant,  depreciation and reserve schedules for Ameren
               Energy Generating Company from FERC Form No. 1 - Annual Report of
               Major  Electric  Utilities,  Licensees,  and  Others as  follows:
               (filed confidentially on Form SE, Appendix B)

               Summary  of  Utility  Plant  and   Accumulated   Provisions   for
               Depreciation, Amortization and Depletion (Electric & Gas)

               Nuclear Fuel Materials

               Electric Plant in Service

               Electric Plant Held for Future Use

               Construction Work in Progress - Electric

               Construction Overheads - Electric

               Accumulated Provision for Depreciation of Electric Utility Plant

               Non-utility Property

               Depreciation and Amortization of Electric Plant



     G.  ORGANIZATIONAL  CHART SHOWING THE RELATIONSHIP OF EACH EWG IN WHICH THE
         SYSTEM HOLDS AN INTEREST TO OTHER SYSTEM  COMPANIES (filed herewith on
         Form SE).

                                       32


     H.  FINANCIAL STATEMENTS FOR EACH EWG OF THE REGISTERED HOLDING COMPANY

         H.1   Audited Financial Statements for AmerenEnergy  Generating Company
               (File No.  333-56594,  Form 10-K,  filed under the Securities and
               Exchange Act of 1933)
        *H.2   Audited  Consolidated  Financial  Statements for Electric Energy,
               Inc. and Subsidiaries (filed confidentially on Form SE)
        *H.3   Unaudited  Consolidated  Financial  Statements  for  AmerenEnergy
               Development Company (filed confidentially on Form SE, Appendix B)
        *H.4   Unaudited  Financial  Statements for Midwest Electric Power, Inc.
               (filed confidentially on Form SE)




                                   SIGNATURE


Ameren  Corporation,  a registered holding company,  has duly caused this annual
report for the year ended  December  31,  2002 to be signed on its behalf by the
undersigned  thereunto  duly  authorized,  pursuant to the  requirements  of the
Public Utility Holding Company Act of 1935.



                                         AMEREN CORPORATION


                                         By: /s/ Martin J. Lyons, Jr.
                                             -----------------------------
                                                 Martin J. Lyons, Jr.
                                             Vice President and Controller

April 30, 2003


                                       33