AMEREN CORP
U5S, 1999-05-10
ELECTRIC & OTHER SERVICES COMBINED
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549







                                    FORM U5S









                                  ANNUAL REPORT

                      For the Year Ended December 31, 1998






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










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


<PAGE>

<TABLE>
<CAPTION>


                                TABLE OF CONTENTS

                                                                                                  Page
<S>                                                                                               <C>

ITEM   1.    SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 1998                        1

ITEM   2.    ACQUISITIONS OR SALES OF UTILITY ASSETS                                                12

ITEM   3.    ISSUE, SALE, PLEDGE, GUARANTEE OR ASSUMPTION OF SYSTEM SECURITIES                      12

ITEM   4.    ACQUISITION, REDEMPTION OR RETIREMENT OF SYSTEM SECURITIES                             12

ITEM   5.    INVESTMENTS IN SECURITIES OF NON-SYSTEM COMPANIES                                      12

ITEM   6.    OFFICERS AND DIRECTORS

             Part   I.  Name, principal business address and positions held as of
                            December 31, 1998                                                       13

             Part  II.  Financial connections as of December 31, 1998                               23

             Part III.  Compensation and other related information                                  24

ITEM   7.    CONTRIBUTIONS AND PUBLIC RELATIONS                                                     25

ITEM   8.    SERVICE, SALES AND CONSTRUCTION CONTRACTS                                              25

             Part   I.  Intercompany sales and service

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

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

ITEM   9.    WHOLESALE GENERATORS AND FOREIGN UTILITY COMPANIES                                     25

ITEM 10.     FINANCIAL STATEMENTS AND EXHIBITS                                                      25

     Index to Financial Statements

     Financial Statements

     Exhibits                                                                                       26

SIGNATURES                                                                                          29

APPENDIX                                                                                            30

</TABLE>

<PAGE>


ITEM 1.  SYSTEM COMPANIES AND INVESTMENTS THEREIN AS OF DECEMBER 31, 1998.

<TABLE>
<CAPTION>
                                              Number of
                                               Common          % of         Issuer              Owner's
                                               Shares        Voting         Book                  Book
        Name of Company                        Owned          Power         Value                 Value    Business Type
        ---------------                        -----          -----         -----                 -----    -------------
<S>                                      <C>                   <C>       <C>              <C>              <C>

Ameren Corporation                                                        3,011,673,650    3,011,673,650     Holding Company

  Union Electric Co.                       102,123,834                    2,424,125,189    2,424,125,189     Electric & Gas Utility

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

    Electric Energy, Inc.                       24,800                        8,834,469        3,533,787     Electric

    Union Electric Development Corp.            18,500                      (14,646,636)     (14,646,636)    Community Develop-
                                                                                                             ment & Energy-Related
                                                                                                             Investments

       Civic Ventures                                                             (2)                        Community
       Investment Fund, LP                                                                                   Development

       Civic Progress                                                             (3)                        Community
                                                                                                             Development

Kiel Center Corporation                                                           (3)                        Community
                                                                                                             Development

       Kiel Investors, L.P.                                                       (3)                        Community
                                                                                                             Development

       Clark Enterprises Inc.                                                     (3)                        Community
                                                                                                             Development


                                      -1-
<PAGE>

 
     Lewis & Clark Industrial                                                    (4)                        Community
       Development Corporation                                                                               Development

       St. Louis Equity Fund 1988                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1990                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1991                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1992                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1993                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1994                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1995                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1996                                                 (5)                        Community
                                                                                                             Development

       St. Louis Equity Fund 1997                                                 (5)                        Community
                                                                                                             Development



                                      -2-

<PAGE>


       St. Louis Equity Fund 1998#1                                               (5)                        Community
                                                                                                             Development

       Housing Missouri, Inc.                                                                                Community
                                                                                                             Development

          Housing Missouri 1996                                                   (6)                        Community
                                                                                                             Development

          Housing Missouri 1997                                                   (6)                        Community
                                                                                                             Development
          Housing Missouri 1998#2                                                 (6)                        Community
                                                                                                             Development

       Gateway Energy Systems, L.C.                                               (7)                        Energy-Related

       Gateway Energy Alliance, L.C.                                              (8)                        Energy-Related

     Central Ill. Pub. Service Co.          25,452,373                      575,370,463      575,370,463     Electric & Gas

         Electric Energy, Inc.                  12,400                        8,834,469        1,766,894     Electric

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

         *Illinois Steam Inc.                      100                            1,000            1,000     Inactive

     CIPSCO Investment Company                     100                        2,261,814        2,261,814     Leasing and Energy-
                                                                                                             Related Investments
 


                                     -3-

 <PAGE>

       CIPSCO Securities Company                   100                       13,791,361       13,791,361     Investments

     CIPSCO Venture Company                        100                        3,883,489        3,883,489     Civic and Economic
                                                                                                             Development

           Effingham Development                                 (9)                                         Investments
           Building II, LLC

           Mattoon Enterprise Park LLC                          (10)                                         Investments

           MACC, LLC                                            (11)                                         Investments

           Illinois Equity Fund 1992                            (12)                                         Investments

           Illinois Equity Fund 1994                            (12)                                         Investments

           Illinois Equity Fund 1996                            (12)                                         Investments

           Illinois Equity Fund 1998#3                           (12)                                         Investments

         CIPSCO Leasing Company                    100          (13)         35,202,658       35,202,658     Leveraged Leases

           CLC Aircraft Leasing Co.                100          (14)                                         Equipment Leasing

           CLC Leasing Co. A                       100          (15)                                         Equipment Leasing

           CLC Leasing Co. B                       100          (16)                                         Equipment Leasing

  

                                       -4-

<PAGE>

           CLC Leasing Co. C                       100          (17)                                         Inactive

         CIPSCO Energy Company                     100                       33,816,975       33,816,975     Energy-Related
                                                                                                             Investments

           CEC-APL L.P.                                                             (18)                     Investments

              CEC-APL-G Co.                        100          (18)                                         Equipment Leasing

              CEC-APL-L Co.                        100          (18)                                         Equipment Leasing

           CEC-PGE L.P.                                                             (19)                     Investments

              CEC-PGE-G Co.                        100          (19)                                         Equipment Leasing

              CEC-PGE-L Co.                        100          (19)                                         Equipment Leasing

           CEC-PGE L.P.                                                             (20)                     Investments

              CEC-PSLP-G Co.                       100          (20)                                         Equipment Leasing

              CEC-PSLP-L Co.                       100          (20)                                         Equipment Leasing

           CEC-MPS L.P.                                                             (21)                     Investments

         CEC-MPS-G Co.                             100          (21)                                         Equipment Leasing

              CEC-MPS-L Co.                        100          (21)                                         Equipment Leasing



                                      -5-

<PAGE>


              CEC-ACE L.P.                                                          (22)                     Investments

              CEC-ACE-G Co.                        100          (22)                                         Equipment Leasing

              CEC-ACE-L Co.                        100          (22)                                         Equipment Leasing

              CEC-ACLP-Co.                         100          (23)                                         Investments

Ameren Energy, Inc.#4                                1                       (3,590,016)      3,590,016)     Power & Gas
                                                                                                             Marketing,
                                                                                                             Energy-Related

Ameren Services Co.                              1,000                       16,231,478       16,231,478     Services to Ameren
                                                                                                             and its affiliates

Ameren Development Company#5                     1,000                          122,407          122,407     Energy-Related

     Ameren ERC, Inc.#6                          1,000                          122,465          122,465     Energy-Related

Ameren Energy Communication, Inc.#7              1,000                         (663,596)          663,596)   Communications-
                                                                                                             Related


                  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 $1,340,000 as of 12/31/98.


                                      -6-

<PAGE>

Union Electric Development Corporation

  (2)  Civic Ventures Investment Fund, LP
           Investment  fund to  promote  growth  and  development  of small  and
           minority business enterprises with Company contributions amounting to
           $178,200 as of 12/31/98.

  (3) Civic Progress,  Kiel Center  Corporation,  Kiel  Investors,  LP and Clark
      Enterprises, Inc.
           Capital  contributions related to an investment in the development of
           the  Kiel  Center,   amounted  to  $6,208,303  as  of  12/31/98.   No
           established market value.

  (4)  Lewis and Clark Industrial Development Corporation
           Capital contribution in civic development as of 12/31/98 of $5,000.

  (5)  St. Louis Equity Funds - 1988, 1990, 1991, 1992, 1993, 1994, 1995,  1996,
       1997 and 1998
           Real estate investment funds, with the Company's total  contributions
           as of 12/31/98 of $3,255,492.52. No established market value.
  (6)  Housing Missouri Funds - 1996, 1997 and 1998
           Real estate  investment funds with the Company's total  contributions
           as of 12/31/98 of $143,890.63. No established market value.

  (7)  Gateway Energy Alliance LLC
           A total of $429,792 was invested in a 50% interest in the above named
           Limited Liability Corporation. No established market value.

  (8)  Gateway Energy Systems, LLC
           A 49% interest in the above named Limited Liability Company amounting
           to $437,500. No established market value.


                                      -7-

<PAGE>


CIPSCO Venture Company holdings:

Total equity interest in the investments  listed below,  except for the Illinois
Equity Funds which is provided separately below, is $872,598:

  (9) Effingham Development Building II LLC
           A 40% equity  interest,  but not the  managing  member,  in the above
           named limited liability company. No established market value.

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

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

 (12)      Illinois   Equity  Funds  -  1992,   1994,   1996  and  1998  Limited
           Partnerships Various ownership interests of not more than 10% in four
           limited partnerships. Total commitment to all limited partnerships of
           $3.5 million. No established market value, book value is $3,010,891.


CIPSCO Leasing Company

Total current asset book value of investments listed below is $35,202,658:

 (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.


                                      -8-

<PAGE>


 (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)  A 100%  interest in a leveraged  lease  financing  of certain  commercial
       properties held under the subsidiary name CLC Leasing Company B.

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


CIPSCO Energy Company

Total current asset book value of investments listed below is $33,816,975:

 (18)  CEC-APL, LP
           A 51%  limited  partnership  interest  in  the  above  named  Limited
           Partnership.  1% and 50% of this  investment  are  held in  CEC-APL-G
           Company and CEC-APL-L  Company,  respectively - both  subsidiaries of
           CIPSCO Energy Company. No established market value.

 (19)  CEC-PGE, LP
           A 51%  limited  partnership  interest  in  the  above  named  Limited
           Partnership.  1% and 50% of  this  investment  is  held in  CEC-PGE-G
           Company and CEC-PGE-L  Company,  respectively - both  subsidiaries of
           CIPSCO Energy Company. No established market value.


                                      -9-

<PAGE>

 (20)  CEC-PSPL, LP
           A 51%  limited  partnership  interest  in  the  above  named  Limited
           Partnership.  1% and 50% of this  investment  are held in  CEC-PSPL-G
           Company and CEC-PSPL-L  Company,  respectively - both subsidiaries of
           CIPSCO Energy Company. No established market value.

 (21)  CEC-MPS, LP
           A 100%  limited  partnership  interest  in the  above  named  Limited
           Partnership.  1% and 99% of this investment are held in CEC-MPS-G and
           CEC-MPS-L Company,  respectively - both subsidiaries of CIPSCO Energy
           Company. No established market value.

 (22)  CEC-ACE, LP
           A 100%  limited  partnership  interest  in the  above  named  Limited
           Partnership.  1% and 99% of this  investment  are  held in  CEC-ACE-G
           Company and CEC-ACE-L Company,  respectively,  - both subsidiaries of
           CIPSCO Energy Company. No established market value.

 (23) 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. No established market value.

                                    Footnotes
#1  St. Louis Equity Fund 1998 is the 1998 commitment to the real estate invest-
    ment fund.

#2  Housing  Missouri 1998  is the 1998 commitment to the real estate investment
    fund.

#3  Illinois Equity Fund 1998 is the 1998 commitment to the real estate  invest-
    ment fund.

#4  Ameren Energy, Inc.  was  incorporated  in Missouri  on 1/6/98 as  an energy
    marketing and trading company.

#5 Ameren Development  Company  was  incorporated  in  Missouri  on 2/26/98 as a
   holding company.


                                      -10-

<PAGE>

#6 Ameren  ERC,  Inc.  was  incorporated  in  Missouri on  2/26/98  to invest in
   energy-related investments.

#7 Ameren Energy Communications, Inc. was incorporated in Missouri on 6/26/98 to
   invest in energy communication investments.

</TABLE>

                                      -11-

<PAGE>



ITEM 2.  ACQUISITIONS OR SALES OF UTILITY ASSETS

No sales that require reporting.

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

A.   Central Illinois Public Service Company - Debt Issuance
       1.  Issuance of $15 million Senior Notes, 5.374%, Due 2008 secured by
           First Mortgage Bonds.  Issued on December 22, 1998.
       2.  Issuance of $40 million Senior Notes, 6.125%, Due 2028 secured by
           First Mortgage Bonds.  Issued on December 22, 1998.

B.   Union Electric Company - Debt Issuance
       1.  Entered  into  a  Loan   Agreement   with  the  State   Environmental
           Improvement and Energy  Resources  Authority of the State of Missouri
           for the issuance of Environmental Improvement Revenue Refunding Bonds
           issued in three series: $60 million, $50 million and $50 million, all
           floating rate issuance, all due September 1, 2033.

C.   Ameren Corporation - Guarantee
       1.  The  registrant  and its  utility  affiliates  are self  insured  for
           Workman's  Compensation Insurance and the Parent (Ameren Corporation)
           guarantees the payment of  outstanding  claims of  subsidiaries  (the
           "reserve"0. At 12/31/98 this amounted to approximately $3.35 million.
           The highest amount  outstanding at any time during the year cannot be
           readily determined.

ITEM 4.  ACQUISITION, REDEMPTION OR RETIREMENT OF SYSTEM SECURITIES


A.   Central Illinois Public Service Company - Debt Retirements
       1.  On or about  December  22,  1998,  this  subsidiary  terminated a $42
           million long term line of credit and paid all  associated  borrowings
           on this line of credit in full.
       2.  On  December  22,  1998,  this  subsidiary  provided  notice  for the
           redemption of First Mortgage Bonds Series W, for $33 million.

B.   Union Electric Company - Debt Retirements
       1.  On December 1, 1998,  this  subsidiary  terminated the Loan Agreement
           with  the  State  Environmental   Improvement  and  Energy  Resources
           Authority  of the  State of  Missouri  due to the  redemption  of the
           associated Environmental Improvement Revenue Refund Bonds in the
           amount of $160 million.


ITEM 5.  INVESTMENTS IN SECURITIES OF NON-SYSTEM COMPANIES

None.


                                      -12-

<PAGE>


ITEM 6.  OFFICERS AND DIRECTORS - PART I

The  positions of officers  and director of all system  companies as of December
31, 1998 were as follows:

NAME AND ADDRESS                                                POSITION


AMEREN CORPORATION

WARNER L. BAXTER (1)                ST. LOUIS, MO                 VP, C
JERRE E. BIRDSONG                   ST. LOUIS, MO                 T
DONALD E. BRANDT                    ST. LOUIS, MO                 SVP
WILLIAM E.CORNELIUS                 ST. LOUIS, MO                 D
CLIFFORD L. GREENWALT (2)           SPRINGFIELD, IL               D
THOMAS A. HAYS                      ST. LOUIS, MO                 D
WILLIAM E. JAUDES (3)               ST. LOUIS, MO                 VP & GC
RICHARD A.LIDDY                     ST. LOUIS, MO                 D
GORDON R.LOHMAN (2)                 CHICAGO, IL                   D
RICHARD A. LUMPKIN (2)              MATTOON, IL                   D
JOHN PETERS MACCARTHY               ST. LOUIS, MO                 D
HANNE M. MERRIMAN (2)               WASHINGTON, D.C.              D
PAUL L. MILLER JR.                  ST. LOUIS, MO                 D
CHARLES W. MUELLER                  ST. LOUIS, MO                 D, CM, P & CEO
ROBERT H. QUENON                    ST. LOUIS, MO                 D
HARVEY SALIGMAN                     ST. LOUIS, MO                 D
CHARLES J. SCHUKAI                  ST. LOUIS, MO                 D
STEVEN R. SULLIVAN (4)              ST. LOUIS, MO                 VP, GC & S
JAMES C. THOMPSON (5)               ST. LOUIS, MO                 S
JANET McAFEE WEAKLEY                ST. LOUIS, MO                 D
JAMES W. WOGSLAND (2)               PEORIA, IL                    D

(1) Mr. Baxter was elected Vice  President on May 1, 1998.  (2) Term began April
    28, 1998.
(3) Mr. Jaudes retired on July 1, 1998.
(4) Mr. Sullivan was elected Vice President and General Counsel on  July 1, 1998
    and Secretary on September 1, 1998.
(5) Mr. Thompson retired on September 1, 1998.

UNION ELECTRIC COMPANY

PAUL A. AGATHEN (1)                 ST. LOUIS, MO                 D
WARNER L. BAXTER (2)                ST. LOUIS, MO                 VP & C
JERRE E. BIRDSONG                   ST. LOUIS, MO                 T
DONALD E. BRANDT (1)                ST. LOUIS, MO                 D, SVP
WILLIAM J. CARR                     ST. LOUIS, MO                 VP
WILLIAM E. CORNELIUS (3)            ST. LOUIS, MO                 D
THOMAS A. HAYS (3)                  ST. LOUIS, MO                 D
THOMAS H. JACOBSEN (3)              ST. LOUIS, MO                 D
WILLIAM E. JAUDES (4)               ST. LOUIS, MO                 VP & GC
RICHARD A. LIDDY (3)                ST. LOUIS, MO                 D
JOHN PETERS       MACCARTHY (3)     ST. LOUIS, MO                 D
PAUL L. MILLER, JR. (3)             ST. LOUIS, MO                 D
MICHAEL J. MONTANA                  ST. LOUIS, MO                 VP
CHARLES W. MUELLER                  ST. LOUIS, MO                 D, P & CEO
ROBERT H. QUENON (3)                ST. LOUIS, MO                 D
GARY L. RAINWATER                   SPRINGFIELD, IL               D

                                      -13-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                 POSITION

GARRY L. RANDOLPH                   ST. LOUIS, MO                 VP
HARVEY SALIGMAN (3)                 ST. LOUIS, MO                 D
CHARLES J. SCHUKAI (1)              ST. LOUIS, MO                 D, SVP
ROBERT J. SCHUKAI                   ST. LOUIS, MO                 VP
WILLIAM C. SHORES                   ST. LOUIS, MO                 VP
STEVEN R. SULLIVAN (5)              ST. LOUIS, MO                 VP, GC & S
JAMES C. THOMPSON (6)               ST. LOUIS, MO                 S
JANET MCAFEE WEAKLEY (3)            ST. LOUIS, MO                 D

(1) Term began April 28, 1998.
(2) Mr. Baxter was elected Vice  President on May 1, 1998.  (3) Term ended April
28, 1998.
(4) Mr. Jaudes retired on July 1, 1998.
(5) Mr. Sullivan was elected Vice President and General Counsel on June 11, 1998
    and Secretary on August 27, 1998.
(6) Mr. Thompson retired on September 1, 1998.


ELECTRIC ENERGY, INC.

DONALD W. CAPONE                    ST. LOUIS, MO                 D
ALEC G. DREYER                      DECATUR, IL                   D
JAMES M. HELM                       JOPPA, IL                     S
R. ALAN KELLEY                      ST. LOUIS, MO                 D, P
WAYNE T. LUCAS                      LOUISVILLE, KY                D
GILBERT W. MOORMAN                  SPRINGFIELD, IL               D
CHARLES W. MUELLER                  ST. LOUIS, MO                 D
ROBERT L. POWERS                    JOPPA, IL                     VP
JOHN D. PRUNKL                      DECATUR, IL                   D
GARY L. RAINWATER                   SPRINGFIELD, IL               D


UNION ELECTRIC DEVELOPMENT CORPORATION


JERRE E. BIRDSONG                   ST. LOUIS, MO                 D, VP, T
DONALD E. BRANDT                    ST. LOUIS, MO                 D, VP, C
WILLIAM E. JAUDES (1)               ST. LOUIS, MO                 D, VP & GC
CHARLES W. MUELLER                  ST. LOUIS, MO                 D, P
JAMES C. THOMPSON (2)               ST. LOUIS, MO                 D, S

(1) Mr. Jaudes retired on July 1, 1998.
(2) Mr. Thompson retired on September 1, 1998.


KIEL CENTER CORPORATION

CHARLES W. MUELLER                  ST. LOUIS, MO                 D


                                      -14-

<PAGE>


ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                  POSITION


KIEL INVESTORS, L.P.

CHARLES W. MUELLER                  ST. LOUIS, MO                 D


CLARK ENTERPRISES INC.

CHARLES W. MUELLER                  ST. LOUIS, MO                 D


ST.LOUIS EQUITY FUND 1988, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998.

DONALD E. BRANDT                    ST. LOUIS, MO                 CM


HOUSING MISSOURI, INC. 1996, 1997, 1998

JERRE E. BIRDSONG                   ST. LOUIS, MO                 D


GATEWAY ENERGY SYSTEMS, L.C.

DONALD E. BRANDT                    ST. LOUIS, MO                 D


GATEWAY ENERGY ALLIANCE, L.C.

DONALD E. BRANDT                    ST. LOUIS, MO                 D


GATEWAY ENERGY WGK PROJECT LLC

DONALD E. BRANDT                    ST. LOUIS, MO                 D


CENTRAL ILLINOIS PUBLIC SERVICE COMPANY

PAUL  A. AGATHEN (1)                ST. LOUIS, MO                 D
WARNER L. BAXTER                    ST. LOUIS, MO                 C
JERRE E. BIRDSONG                   ST. LOUIS, MO                 T
JAMES T. BIRKETT                    SPRINGFIELD, IL               VP
DONALD E. BRANDT (1)                ST. LOUIS, MO                 D
CLIFFORD L. GREENWALT (2)           SPRINGFIELD, IL               D
JOHN L. HEATH                       PHOENIX, AZ                   D
ROBERT W.JACKSON                    SPRINGFIELD, IL               D
WILLIAM E. JAUDES (3)               ST. LOUIS, MO                 VP & GC
WILLIAM A. KOERTNER (4)             SPRINGFIELD, IL               VP, S
GORDON R. LOHMAN (2)                CHICAGO, IL                   D
RICHARD A. LUMPKIN (2)              MATTOON, IL                   D
HANNE M. MERRIMAN (2)               WASHINGTON, D.C.              D

                                      -15-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                POSITION


MICHAEL J. MONTANA (1)              ST. LOUIS, MO                VP
GILBERT W. MOORMAN                  SPRINGFIELD, IL              VP
CHARLES W. MUELLER (1)              ST. LOUIS, MO                D
CRAIG D. NELSON (1)                 ST. LOUIS, MO                VP
GARY L. RAINWATER (5)               SPRINGFIELD, IL              D, P & CEO
CHARLES J. SCHUKAI (1)              ST. LOUIS, MO                D
THOMAS L. SHADE                     QUINCY, IL                   D
STEVEN R. SULLIVAN (6)              ST. LOUIS, MO                VP, GC & S
THOMAS R. VOSS (7)                  SPRINGFIELD, IL              VP
JAMES W. WOGSLAND (2)               PEORIA, IL                   D

(1) Term began April 28, 1998.
(2) Term ended April 28, 1998.
(3) Mr. Jaudes retired on July 1, 1998.
(4) Mr. Koertner resigned on November 6, 1998.
(5) Mr. Rainwater was elected  President and Chief Executive  Officer on January
    1, 1998.
(6) Mr.  Sullivan was elected Vice  President,  General Counsel and Secretary on
    November 7, 1998.
(7) Mr. Voss was elected Vice President on July 1, 1998.


CIPS ENERGY, INC.

GARY L. RAINWATER                   SPRINGFIELD, IL              D, P


ILLINOIS STEAM INC.

GARY L. RAINWATER                   SPRINGFIELD, IL              D, P


CIPSCO INVESTMENT COMPANY

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CIPSCO SECURITIES COMPANY

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S

 
                                    -16-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                POSITION


CIPSCO VENTURE COMPANY

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


EFFINGHAM DEVELOPMENT BUILDING II, LLC

ROBERT C. PORTER                    ST. LOUIS, MO                D


MATTOON ENTERPRISES PARK LLC

ROBERT C. PORTER                    ST. LOUIS, MO                D


MACC, LLC

ROBERT C. PORTER                    ST. LOUIS, MO                D


ILLINOIS EQUITY FUND 1992, 1994, 1996, 1998.

ROBERT C. PORTER                    ST. LOUIS, MO                D


CIPSCO LEASING COMPANY

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CLC AIRCRAFT LEASING CO.

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CLC LEASING CO. A

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T


                                      -17-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                POSITION


DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CLC LEASING CO. B

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CLC LEASING CO. C

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CIPSCO ENERGY COMPANY

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CEC-APL-G CO.

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CEC-APL-L CO.

DIANE L. BORTMESS                   SPRINGFIELD, IL              D, T
RONALD K. EVANS                     ST. LOUIS, MO                D, S
JOY D.   HUSTON                     ST. LOUIS, MO                D, C
GREGORY L. NELSON                   ST. LOUIS, MO                D, PEO, P


                                      -18-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                POSITION


CEC-PGE-G CO.

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CEC-PGE-L CO.

DIANE L. BORTMESS                   SPRINGFIELD, IL              D, T
RONALD K. EVANS                     ST. LOUIS, MO                D, S
JOY D.   HUSTON                     ST. LOUIS, MO                D, C
GREGORY L. NELSON                   ST. LOUIS, MO                D, PEO, P


CEC-PSPL-G CO.

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CEC-PSPL-L CO.

DIANE L. BORTMESS                   SPRINGFIELD, IL              D, T
RONALD K. EVANS                     ST. LOUIS, MO                D, S
JOY D.   HUSTON                     ST. LOUIS, MO                D, C
GREGORY L. NELSON                   ST. LOUIS, MO                D, PEO, P


CEC-MPS-G CO.

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CEC-MPS-L CO.

DIANE L. BORTMESS                   SPRINGFIELD, IL              D, T
RONALD K. EVANS                     ST. LOUIS, MO                D, S
JOY D.   HUSTON                     ST. LOUIS, MO                D, C
GREGORY L. NELSON                   ST. LOUIS, MO                D, PEO, P

                                      -19-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                POSITION


CEC-ACE-G CO.

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


CEC-ACE-L CO.

DIANE L. BORTMESS                   SPRINGFIELD, IL              D, T
RONALD K. EVANS                     ST. LOUIS, MO                D, S
JOY D.   HUSTON                     ST. LOUIS, MO                D, C
GREGORY L. NELSON                   ST. LOUIS, MO                D, PEO, P


CEC-ACLP- CO.

WARNER L. BAXTER                    ST. LOUIS, MO                C
JERRE E. BIRDSONG                   ST. LOUIS, MO                D, PEO, P, T
DONALD E. BRANDT                    ST. LOUIS, MO                D
ROBERT C. PORTER                    ST. LOUIS, MO                D, VP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                S


AMEREN ENERGY, INC

PAUL A. AGATHEN                     ST. LOUIS, MO                D
WARNER L. BAXTER                    ST. LOUIS, MO                VP, C
JERRE E. BIRDSONG                   ST. LOUIS, MO                T
DONALD E. BRANDT                    ST. LOUIS, MO                D, P
DANIEL F. COLE                      ST. LOUIS, MO                VP
LESLIE MCNEW                        ST. LOUIS, MO                VP
CHARLES W. MUELLER                  ST. LOUIS, MO                D
STEVEN R. SULLIVAN                  ST. LOUIS, MO                VP, GC & S
JAMES F.WHITESIDES                  ST. LOUIS, MO                VP


AMEREN SERVICES CO.

PAUL A. AGATHEN                     ST. LOUIS, MO                SVP
M. PATRICIA BARRETT                 ST. LOUIS, MO                VP
WARNER L. BAXTER (1)                ST. LOUIS, MO                VP, C
JERRE E. BIRDSONG                   ST. LOUIS, MO                T
DONALD E. BRANDT                    ST. LOUIS, MO                D, SVP
CHARLES A. BREMER                   ST. LOUIS, MO                VP
DONALD W. CAPONE                    ST. LOUIS, MO                VP
JIMMY L. DAVIS                      ST. LOUIS, MO                VP
JEAN M. HANNIS                      ST. LOUIS, MO                VP
WILLIAM E. JAUDES (2)               ST. LOUIS, MO                VP & GC

                                      -20-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)

NAME AND ADDRESS                                                POSITION


R. ALAN KELLEY                      ST. LOUIS, MO                VP
MICHAEL J. MONTANA                  ST. LOUIS, MO                VP
CHARLES W. MUELLER                  ST. LOUIS, MO                D, P & CEO
CRAIG D. NELSON                     ST. LOUIS, MO                VP
CHARLES J. SCHUKAI                  ST. LOUIS, MO                D, SVP
STEVEN R. SULLIVAN (3)              ST. LOUIS, MO                VP, GC & S
JAMES C. THOMPSON (4)               ST. LOUIS, MO                S
SAMUEL E. WILLIS                    ST. LOUIS, MO                VP
RONALD C. ZDELLAR                   ST. LOUIS, MO                VP


(1) Mr. Baxter was elected Vice President on May 1, 1998. (2) Mr. Jaudes retired
    on July 1, 1998.
(3) Mr. Sullivan was elected Vice President and General Counsel on June 11, 1998
    and Secretary on August 27, 1998.
(4) Mr. Thompson retired on September 1, 1998.


AMEREN DEVELOPMENT COMPANY

PAUL A. AGATHEN                     ST. LOUIS, MO                SVP
JERRE E. BIRDSONG                   ST. LOUIS, MO                T
DONALD E. BRANDT                    ST. LOUIS, MO                D, SVP
CHARLES W. MUELLER                  ST. LOUIS, MO                D, P
CHARLES J. SCHUKAI                  ST. LOUIS, MO                D, SVP
STEVEN R. SULLIVAN                  ST. LOUIS, MO                VP, GC & S


AMEREN ERC, INC

PAUL A. AGATHEN                     ST. LOUIS, MO                SVP
JERRE E. BIRDSONG                   ST. LOUIS, MO                T
DONALD E. BRANDT                    ST. LOUIS, MO                D, SVP
CHARLES W. MUELLER                  ST. LOUIS, MO                D
CHARLES J. SCHUKAI                  ST. LOUIS, MO                D, P
STEVEN R. SULLIVAN                  ST. LOUIS, MO                VP, GC & S


AMEREN ENERGY COMMUNICATIONS, INC.

JERRE E. BIRDSONG                   ST. LOUIS, MO                 T
DONALD E. BRANDT                    ST. LOUIS, MO                 D
CHARLES W. MUELLER                  ST. LOUIS, MO                 D
CHARLES J. SCHUKAI                  ST. LOUIS, MO                 D, P
STEVEN R. SULLIVAN                  ST. LOUIS, MO                 S


                                      -21-

<PAGE>

ITEM 6.  OFFICERS AND DIRECTORS - PART I (continued)


NOTE: Positions are indicated above by the following symbols:

C -  Controller
CEO - Chief Executive Officer
CM - Chairman
D - Director
GC - General Counsel
P - President
PEO - Principal Executive Officer
S - Secretary
SVP - Senior Vice President
T - Treasurer
VP - Vice President


                                      -22-

<PAGE>


ITEM 6.  OFFICERS AND DIRECTORS - PART II

Financial Connections - The following is a list, as of December 31, 1998, 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.

<TABLE>
<CAPTION>

                                                                                 Position
                                                                                  Held in            Applicable
  Name of Officer             Name and Location                                 Financial            Exemption
   or Director              of Financial Institution                             Institution           Rules
     (1)                             (2)                                            (3)                 (4)
- -------------------------------------------------------------------------------------------------------------------
                               AMEREN CORPORATION
<S>                       <C>                                                   <C>                <C>
Clifford L. Greenwalt       National City Corporation                             Director           Rule 70(b)
                            National City Bank of Michigan/Illinois

Thomas A. Hays              Mercantile Bancorporation                             Director           Rule 70(a)

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

Harvey Saligman             Mercantile Bancorporation                             Director           Rule 70(a)


                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY

John L. Heath               Johnson Bank of Arizona, N.A. of                      Director           Rule 70(d)
                            Phoenix and Scottsdale, Arizona

</TABLE>

                                      -23-

<PAGE>


ITEM 6.  OFFICERS AND DIRECTORS - PART III

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

Information  concerning  compensation and interests in system  securities is set
forth in Exhibits A-4, A-5 and A-6 to this Form U5S and is  incorporated  herein
by reference.


(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.

See Exhibits A-4, A-5 and A-6 for descriptions of the participation of directors
and  executive   officers  of  System  companies  in  bonus  and  profit-sharing
arrangements and other benefits.


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

The state laws under which each of the 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  companies'  charters or
by-laws  also  provides  for  indemnification  of  directors  and  officers.  In
addition,  directors  and  executive  officers  of  Ameren  and  all  subsidiary
companies are insured under directors' and officers'  liability  policies issued
to Ameren,  et.  al. 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, 2002.  The  Corporation
has  entered  into a  standard  form of  indemnity  agreement  with  each of its
directors and officers.


                                      -24-

<PAGE>


ITEM 7.  CONTRIBUTIONS AND PUBLIC RELATIONS

Part I   None
Part II  None


ITEM 8.  SERVICE, SALES AND CONSTRUCTION CONTRACTS

Part I.  (1) Ameren Services/Ameren ERC - March 27, 1998 (see Appendix A)
         (2) Ameren Services/Ameren Development Co. - March 27,
             1998 (see Appendix B)
         (3) Ameren Services/Ameren Energy Communications, Inc. - July 1,
             1998 (see Appendix C)
         (4) Ameren Services/Ameren Energy, Inc. - October 1, 1998 (see Appendix
             D)
         (5) Ameren  Services/Ameren  Energy,  Inc.  -  October  30,  1998  (see
             Appendix E)
         (6) Ameren Services/Electric Energy Inc. - July 1,1998 (see Appendix F)

Part     II. The System companies had no contracts to purchase services or goods
         during 1998 from any affiliated (other than a System company) or from a
         company, in which any officer or director of the receiving company is a
         partner  or owns 5 percent  of more of any class of equity  securities,
         except as reported in Item 6.

Part     III.  The  System  company  does not  employ  any other  person for the
         performance  on  a  continuing  basis  of  management,  supervisory  or
         financial advisory services.


ITEM 9.  WHOLESALE GENERATORS AND FOREIGN UTILITY COMPANIES

None


ITEM 10.  FINANCIAL STATEMENTS AND EXHIBITS (continued)

FINANCIAL STATEMENTS

Filed confidentially as Appendix G on Form SE.


                          NOTES TO FINANCIAL STATEMENTS



Ameren                            Corporation  Reference  is made to  "Notes  to
                                  Consolidated  Financial  Statements" contained
                                  on  pages 28  through  42 in the  Ameren  1998
                                  Annual   Report   to    Shareholders,    which
                                  information is incorporated by reference.


Union                             Electric   Reference  is  made  to  "Notes  to
                                  Financial  Statements"  contained  on pages 23
                                  through 37 in the Union  Electric  1998 Annual
                                  Report,  which  information is incorporated by
                                  reference.


Central                           Illinois  Public Service  Reference is made to
                                  "Notes to Financial  Statements"  contained on
                                  pages 23  through 36 in the  Central  Illinois
                                  Public  Service  1998  Annual  Report,   which
                                  information is incorporated by reference.


                                      -25-

<PAGE>


ITEM 10.  FINANCIAL STATEMENTS AND EXHIBITS (continued)

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   1998 Annual Report on Form 10-K for Ameren Corporation. (File No.
               1-14756)

         A.2   1998  Annual Report  on  Form 10-K  for  Central  Illinoi  Public
               Service Company.  (File No. 1-3672)

         A.3   1998 Annual Report on Form 10-K for Union Electric Company. (File
               No. 1-2967)

         A.4   1999 Proxy Statement of Ameren Corporation. (File No. 1-14756)

         A.5   1999 Proxy Statement of Central Illinois Public  Service Company.
               (File No. 1-3672)

         A.6   1999 Proxy Statement of Union Electric Company. (File No. 1-2967)


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

         B.1   Ameren Energy Communications - Filed herewith on Form SE


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

         C.1   Union Electric Company

               C1.1  Trust Indenture - Environmental Bonds, Series 1998 A (filed
                     herewith on Form SE)

               C1.2  Loan Agreement - Environmental  Bonds, Series 1998 A (filed
                     herewith on Form SE)

               C1.3  Trust Indenture - Environmental Bonds, Series 1998 B (filed
                     herewith on Form SE)

               C1.4  Loan Agreement - Environmental  Bonds, Series 1998 B (filed
                     herewith on Form SE)

               C1.5  Trust Indenture - Environmental Bonds, Series 1998 C (filed
                     herewith on Form SE)

               C1.6  Loan Agreement - Environmental  Bonds, Series 1998 C (filed
                     herewith on Form SE)

                                      -26-

<PAGE>

         C.2   Central Illinois Public Service Company


               C2.1  Trust Agreement  -  $75,000,000  Senior Note First Mortgage
                     Bonds (filed herewith on Form SE)

*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 Electri  Utilities  Licensees  and/or Natural Gas Utilities as
               follows: (filed herewith on From SE)

               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

               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 herewith on
               Form SE)

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

                                      -27-

<PAGE>

               Electric Plant in Service

               Gas Plant in Service

               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


*G.      FINANCIAL DATA SCHEDULES (filed herewith on Form SE)

         G.1   Financial Data Schedule of Ameren Corporation Consolidated

         G.2   Financial Data Schedule of Ameren Corporation

         G.3   Financial Data Schedule of Union Electric Company

         G.4   Financial  Data  Schedule  of  Central  Illinois  Public  Service
               Company

         G.5   Financial Data Schedule of Ameren Services

         G.6   Financial Data Schedule of Electric Energy Inc

         G.7   Financial Data Schedule of Ameren Energy

         G.8   Financial Data Schedule of CIPSCO Investment Company

         G.9   Financial Data Schedule of Ameren Development Company

         G.10  Financial Data Schedule of Ameren Energy Communications

   
                                   -28-


<PAGE>





SIGNATURE


Ameren   Corporation,  a registered holding company, has duly caused this annual
         report for the year ended  December 31, 1998 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/ Steven R. Sullivan
                                             ------------------------
                                              Steven R. Sullivan
                                              Vice President, General Counsel
                                              and Secretary


May 10, 1999


                                      -29-

<PAGE>

                                    APPENDIX



                                      -30-

<PAGE>
                                                                      Appendix A

                               SERVICES AGREEMENT
                                     Between
                             AMEREN SERVICES COMPANY
                                       and
                                AMEREN ERC, INC.

     THIS AGREEMENT,  made and entered into this 27th day of March, 1998, by and
between the following Parties:  AMEREN SERVICES COMPANY  (hereinafter  sometimes
referred to as "Service Company"), a Missouri corporation;  and AMEREN ERC, INC.
and  its  subsidiaries  ("Ameren  ERC"),  a  Missouri  Corporation  (hereinafter
sometimes referred to collectively as "Client Companies");

                       WITNESSETH:

     WHEREAS,  Client Companies,  desire to enter into this agreement  providing
for the  performance  by Service  Company  for the Client  Companies  of certain
services more particularly set forth herein; and
     WHEREAS,  Service Company is organized,  staffed and equipped and has filed
with the  Securities  and  Exchange  Commission  ("the SEC") to be a  subsidiary
service company under Section 13 of the Public Utilities  Holding Company Act of
1935 (the  "Act") to render to Ameren  Corporation,  and other  subsidiaries  of
Ameren  Corporation,  certain  services  as herein  provided;  and

     WHEREAS, to maximize efficiency, and to achieve merger related savings, the
Client  Companies  desire to avail  themselves  of the  advisory,  professional,
technical  and other  services of persons  employed or to be retained by Service
Company, and to

<PAGE>

compensate Service Company appropriately for such services,

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements herein, the parties hereto agree as follows:

Section 1. Agreement to Furnish Services

     Service   Company   agrees  to  furnish  to  Client   Companies  and  their
subsidiaries,  if any,  upon the  terms  and  conditions  herein  provided,  the
services  hereinafter referred to and described in Section 2, at such times, for
such  period  and in such  manner  as  Client  Companies  may from  time to time
request.  Service  Company  will keep  itself and its  personnel  available  and
competent  to  render  to  Client  Companies  such  services  so  long  as it is
authorized so to do by the appropriate federal and state regulatory agencies.

Section 2. Services to be Performed

     The services to be provided by Service Company hereunder may, upon request,
include the services as set out in Schedule 1,  attached  hereto and made a part
hereof. A revised Schedule 1 will be provided on an annual basis.

     In addition to the Services set out in Schedule 1,  Service  Company  shall
render advice and  assistance  in  connection  with such other matters as Client
Companies may request and Service Company  determines it is able to perform with
respect to Client Companies' business and operations.

Section 3.  Compensation of Service Company

     As compensation for such services rendered to it by Service Company, Client
Companies hereby agree to pay to Service Company

                                      -2-

<PAGE>

the cost of such  services,  computed in accordance  with  applicable  rules and
regulations  (including,  but not limited to, Rules 90 and 91) under the Act and
appropriate accounting standards.

     Compensation  to be paid by Client  Companies  shall include direct charges
and  Client  Companies'  fairly  allocated  pro rata share of certain of Service
Company's costs, determined as set out on Schedule 2, attached hereto and made a
part hereof.

Section 4.  Securities and Exchange Commission Rules

     It is the intent of the Parties that the determination of the costs as used
in this Agreement shall be consistent with, and in compliance with the rules and
regulations  of the SEC,  as they now read or  hereafter  may be modified by the
Commission.

Section 5.  Service Requests

     Services will be performed in  accordance  with a Service  Request  system,
consisting  of work orders  established  to capture  the various  types of costs
incurred by Service  Company.  Costs will be charged to the appropriate  service
requests,  which  will  then be the  basis  for the  billing  of costs to Client
Companies.

Section 6.  Payment

     Payment  shall be by making  remittance  of the amount  billed or by making
appropriate accounting entries on the books of the companies.

     Payment  shall be  accomplished  on a  monthly  basis,  and  remittance  or
accounting entries shall be completed within 60 days of billing.

                                   -3-

<PAGE>

Section 7.  Ameren Corporation

     Except as authorized by rule,  regulation,  or order of the  Securities and
Exchange  Commission,  nothing in this Agreement  shall be read to permit Ameren
Corporation,  or any person  employed  by or acting for Ameren  Corporation,  to
provide  services  for other  Parties,  or any  companies  associated  with said
Parties. Section 8. Client Companies


     Except as limited by Section 7, nothing in this Agreement  shall be read to
prohibit Client Companies or their  subsidiaries from furnishing to other Ameren
system  companies or their  subsidiaries  services herein referred to, under the
same conditions and terms as set out for Service Company.

Section 9.  Effective Date and Termination

     This  Agreement  shall  remain  in  effect  from the date  executed  unless
terminated  by mutual  agreement  or by any Party  giving at least  sixty  days'
written notice to the other Parties prior to the beginning of any calendar year,
each Party fully reserving the right to so terminate the Agreement.

     This  Agreement may also be terminated to the extent that  performance  may
conflict  with any rule,  regulation  or order of the  Securities  and  Exchange
Commission adopted before or after the making of this Agreement.

Section 10.  Assignment

     This  Agreement and the rights  hereunder  may not be assigned  without the
mutual written consent of all Parties hereto.

                                      -4-

<PAGE>


     IN WITNESS  WHEREOF,  the Parties  hereto have caused this  Agreement to be
executed and attested by their authorized  officers as of the day and year first
above written.

                                            AMEREN SERVICES COMPANY

                                            By ______________________________

                                            Title ___________________________
ATTEST:

By ______________________

Title ___________________

                                           AMEREN ERC, INC.

                                           By ______________________________

                                           Title ___________________________
ATTEST:

By ______________________

Title ___________________


                                      -5-

<PAGE>


                                                                     Schedule 1
                                                                    Page 1 of 9








                        DESCRIPTION OF EXPECTED SERVICES
                      TO BE PROVIDED BY AMEREN SERVICES AND
                     EXPECTED DIRECT COST ALLOCATION FACTORS


Description of Expected Services to be Provided

A  description  of the  expected  services to be provided by Ameren  Services is
detailed  below.  Identifiable  costs  for all of the  functional  organizations
listed  below  will  be  directly   charged  to  Ameren   Corporation   and  its
subsidiaries, whenever possible.

For costs that cannot be directly  assigned or distributed,  the expected direct
cost allocation factors are reflected below for each Ameren Services department.

         a)  Building Service

         Description - Provide facility management services for owned and leased
         facilities,   excluding  power  plants.  To  the  extent  that  leasing
         arrangements  are  established  between Ameren  Services  and/or Ameren
         Corporation  and its  subsidiaries,  lease costs will  include rent for
         space  occupied  and  applicable   services,   such  as  operation  and
         maintenance  of  structures,   capital  improvements,   interior  space
         planning, security and janitorial. As appropriate,  lease costs will be
         allocated  based on square feet  occupied  and the  allocation  factors
         listed below.

         Expected Allocation Factors - 1) number of employees; 2) operations and
         maintenance labor; 3) total capitalization; and 4) total assets

         b)  Controller's

         Description  - Perform all  accounting  services  necessary to properly
         maintain  and  report  on the  books  and  records  of  Ameren  and its
         subsidiaries. Provide investor relations services.

         Expected Allocation Factors - 1) composite*;  2)  total capitalization;
         and 3) total assets

         c)  Corporate Communications

         Description - Develop strategies for advertising and marketing efforts,
         develop employee communication programs, coordinate community relations
         efforts and develop policies and procedures for media relations.


<PAGE>

                                                                     Schedule 1
                                                                    Page 2 of 9


         Expected Allocation Factors - 1)  composite*; 2)  total capitalization;
         and 3) total assets

         d)  Corporate Planning

         Description - Provide rate engineering, interchange marketing, resource
         planning and business analysis services.

         Expected Allocation Factors - 1) composite*; 2) kwh sales; 3) peak load
         [electric]; 4) total capitalization; and 5) total assets

         e) Customer Services/Division Support

         Description - Answer  customer  inquiries  pertaining  to  electric/gas
         service usage and perform credit activities.  Provide technical support
         relating to  planning,  engineering,  constructing  and  operating  the
         distribution and transmission  systems.  Provide  technical support and
         maintenance  of protective  relay schemes,  station meter work,  system
         testing and data acquisition systems.

         Expected Allocation Factors - 1) number of customers; 2) number  of em-
         ployees; and 3) operations and maintenance labor

         f)  Economic Development

         Description - Provide community and business development  services,  as
         well  as  natural  gas  development  services.  Analyze  community  and
         business development opportunities.

         Expected Allocation Factors - 1) number of customers; 2) sales [kwh and
         dekatherm]; 3) total capitalization; and 4) total assets

         g)  Energy Supply

         Coordinate the use of the generating,  transmission and interconnection
         facilities to provide economical and reliable energy.

         Expected Allocation Factors - 1) kwh sales

<PAGE>

                                                                     Schedule 1
                                                                    Page 3 of 9



         h)  Engineering and Construction

         Description  - Provide  professional  services  related to  engineering
         studies,  design,  procurement,  planning,  building and  management of
         projects.   Study  technology  that  may  reduce  costs  of  producing,
         delivering and using electricity.

         Expected Allocation Factors - 1)  peak load  [electric];  2) generating
         capacity; and 3) construction expenditures

         i)  Environmental Services & Safety

         Description  -  Perform   analysis  and  advocacy  of  regulatory   and
         legislative  issues in the areas of  environment,  health  and  safety.
         Communicate final regulatory  requirements to operating groups. Provide
         assistance  and  support  and   compliance   review  in  meeting  those
         requirements.   Oversee  hazardous  substance  site  investigation  and
         remediation activities.

         Expected Allocation Factors - 1)   number of employees; 2)   generating
         capacity;  3)  operations  and  maintenance  labor; and 4) construction
         expenditures

         j)  Executive

         Description - Provide  executive  management  duties for all applicable
         activities at the department, function and officer levels.

         Expected Allocation Factors - 1) total capitalization; 2) total assets;
         and 3) sales [kwh and dekatherm]

         k)  Fossil Fuel Procurement

         Description  - Provide  resources  necessary  to  procure  fuel for the
         fossil power plants and minimize production costs.

         Expected Allocation Factors - 1) kwh sales

         l)  Gas Supply

         Description - Provide gas supply and pipeline capacity  procurement and
         management services.  Develop policies,  procedures and standards which
         govern the design, construction and operation of the gas systems.


<PAGE>

                                                                     Schedule 1
                                                                    Page 4 of 9



         Expected Allocation Factors - 1)  dekatherm  sales;  2) gas  throughput
         [includes transportation]; and 3) peak load [gas]

         m)  General Counsel

         Description - Provide  general legal advice  related to all  applicable
         activities  and legal  services in regards to  legislative  activities,
         regulatory  agencies and security  matters.  Make  regulatory  filings,
         maintain  minutes  of  the  board  of  directors,  conduct  stockholder
         meetings and procure property and casualty insurance bonds.

         Expected Allocation Factors - 1)  composite*; 2)  total capitalization;
         and 3) total assets

         n)  Human Resources

         Description - Administer  and  negotiate  employee  benefits  including
         pensions, major medical, long-term disability, life insurance,  defined
         contribution  plans,  executive  benefit and flexible  spending  plans.
         Provide employment  services,  including required regulatory  reporting
         and maintenance of personnel  records.  Provide  employee  training and
         communications services.

         Expected Allocation Factors - 1) number of employees; 2) total capital-
         ization; 3) total assets; and 4) operation and maintenance labor

         o)  Industrial Relations

         Description - Negotiate,  represent and administer  provisions of labor
         agreements applicable to unions representing union employees.

         Expected Allocation Factors - 1) number of employees; and  2) operation
         and maintenance labor

         p)  Information Services

         Description  - Provide for the  development  and  operation of computer
         software,  telecommunications  and  other  equipment  used  to  conduct
         business and engineering  activities.  Maintain all billing records and
         process customer meter readings.

         Expected Allocation Factors - 1) composite*; 2) number of customers; 3)
         number of employees; 4) CPU cycles; and  5) operation  and  maintenance
         labor

<PAGE>

                                                                     Schedule 1
                                                                    Page 5 of 9



         q)  Internal Audit

         Description  -  Audit  company  operations,   perform  operational  and
         productivity  reviews,  review  justifications for capital projects and
         perform quality assurance reviews.

         Expected Allocation Factors - 1) composite*; 2) number of customers; 3)
         number of employees; and 4) operation and maintenance labor

         r)  Marketing

         Description - Provide marketing services including account  management,
         program development, market research and customer energy services.

         Expected Allocation Factors - 1) sales [kwh and dekatherm]; and  2) to-
         tal assets

         s)  Merger Coordination

         Description  - Monitor  programs to achieve  savings,  merger costs and
         position reductions as they relate to the implementation plans.

         Expected Allocation Factors - 1)  composite*; 2)  total capitalization;
         and 3) total assets

         t)  Motor Transportation

         Description - Provide engineering, support, and mechanical servicing of
         vehicles, procurement of vehicles and safety and training programs.

         Expected Allocation Factors - 1) number of vehicles

         u)  Purchasing

         Description  - Provide  procurement  of goods and  services  other than
         fuel. Provide materials inventory management services.

         Expected Allocation Factors -  1) composite*;  2) total assets;  and 3)
         construction expenditures

<PAGE>

                                                                     Schedule 1
                                                                    Page 6 of 9



         v) Real Estate

         Description  - Acquire  necessary  land  rights and  permits  including
         coordination  of site  selection.  Maintain  existing land rights while
         permitting  licenses  and  leases to  minimize  investment  or costs of
         holding property.

         Expected Allocation Factors - 1)  composite*; 2)  number of  customers;
         and 3) total assets

         w)  Stores

         Description  -  Provide  clerical,  stenographic,   administrative  and
         Electronic Data systems support. Provide engineering support and manage
         and direct stores operations.

         Expected Allocation Factors - 1) composite*

         x)  Tax

         Description  - Research  and consult on tax issues in  connection  with
         federal, state and local tax compliance and planning matters, including
         the preparation and filing of returns.

         Expected Allocation Factors - 1) composite*; 2) current tax expense; 3)
         total capitalization; and 4)
         total assets

         y)  Treasurer's

         Description - Provide treasury operation,  mailing, financial planning,
         investments, and executive payroll and pension disbursement services.

         Expected Allocation Factors - 1) composite*; 2) number of customers; 3)
         number of employees; 4) total capitalization; and 5) total assets



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
         Sales (kwh and dekatherm)
         Number of customers
         Number of employees


<PAGE>

                                                                     Schedule 1
                                                                    Page 7 of 9



Allocation Factors

The following allocation factors will be utilized as outlined above.

Number of Customers - Based on the number of customers  (electric and/or gas) at
the end of the most  recent  calendar  year.  The  numerator  of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Sales - Based on the sales  volume (kwh and/or  dekatherms)  for the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

Number  of  Employees  - Based  on the  number  of  employees  (contract  and/or
non-contract, or electric operating and/or gas operating) at the end of the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Composite  - Based on an equal  weighting  Sales  (kwh &  dekatherm),  Number of
Customers  (total),  and Number of Employees  (total)  allocation  factors.  The
numerator  of which is the simple  average  of the above  three  factors  for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be  determined  annually  and/or at such time as may be required
due to a significant change in circumstances.

Operations & Maintenance  Labor - Based on the  Operations &  Maintenance  Labor
(electric  and/or gas) for the most recent calendar year. The numerator of which
is for an Operating  Company or an affected  affiliate  and the  denominator  of
which is for all Operating  Companies  and affected  affiliate  companies.  This
ratio will be determined annually, and/or at such time as may be required due to
a significant change in circumstances.

Revenues - Based on revenues  (electric and/or gas) for the most recent calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate  company.  The  denominator  of which is for all  Operating  Companies
and/or affected affiliate companies.  This ratio will be determined annually, or
at such time as may be required due to a significant change in circumstances.

Total Capitalization - Based on total capitalization (total common

<PAGE>

                                                                     Schedule 1
                                                                    Page 8 of 9




stockholder's  equity,  preferred  stock,  and long term debt) at the end of the
most recent calendar year. The numerator of which is for an Operating Company or
an affected  affiliate  company.  The  denominator of which is for all Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Total  Assets - Based on total  assets  at the end of the most  recent  calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate company.  The denominator of which is for all Operating  Companies and
affected affiliate companies.  This ratio will be determined annually, and/or at
such time as may be required due to a significant change in circumstances.

Construction  Expenditures  - Based on  construction  expenditures  for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Peak Load  (electric)  - Based on the  highest  monthly  maximum  megawatt  load
(60-minute  integration)  for the most recent  calendar  year.  The numerator of
which  is for an  Operating  Company  and the  denominator  of  which is for all
Operating Companies. This ratio will be determined annually, and/or at such time
as may be required due to a significant change in circumstances.

Peak Load  (gas) - Based on the  highest  daily  send out in  therms  (excluding
transportation) for the most recent calendar year. The numerator of which is for
an  Operating  Company  and  the  denominator  of  which  is for  all  Operating
Companies. This ratio will be determined annually, and/or at such time as may be
required due to a significant change in circumstances.

Generating Capacity  (nameplate) - Based on installed capacity nameplate ratings
at the end of the most recent  calendar  year.  The numerator of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Gas   Throughput  -  Based  on  gas   throughput   in   dekatherms   (sales  and
transportation) for the most recent calendar year. The numerator of which is for
an Operating Company.  The denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

CPU Cycles - Based on cpu cycles (by application) for the most


<PAGE>

                                                                     Schedule 1
                                                                    Page 9 of 9


recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Current  Tax  Expense - Based on taxes  charged  (income and other) for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Number of  Vehicles - Based on number of  vehicles at the end of the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

In  addition  to  the  allocation  factors  listed  above,   appropriate  direct
allocations  will be made for  costs  benefiting  a single  affiliate.  Indirect
allocations  will  also  be  made  to all  affiliates,  including  non-regulated
companies and Ameren Corporation.

It may be  necessary  to  allocate a  percentage  of total  costs  allocated  to
non-regulated  companies or Ameren Corporation (see below). This will be done as
a  sub-factor  of  existing  allocation  factors.  For  example,   allocating  a
percentage of customer service costs to  non-regulated  companies and allocating
remaining costs based on number of customers.  Also,  allocating a percentage of
video presentation  costs to Ameren  Corporation and allocating  remaining costs
based on capitalization.

Non-Regulated - Based on a percentage of total costs allocated to  non-regulated
companies when existing  allocation  methods do not adequately reflect the level
of services or benefits  received.  After  allocating  this  percentage of total
costs to non-regulatory company, the remaining costs will be allocated to Ameren
Corporation  and/or  its  subsidiaries,  as  appropriate,  based upon one of the
factors above.

Corporate - Based on a percentage of total costs allocated to Ameren Corporation
(AMC) when existing  allocation  methods do not adequately  reflect the level of
services or benefits  received.  After allocating this percentage of total costs
to AMC,  the  remaining  costs will be  allocated  based upon one of the factors
above.


<PAGE>


                                                                   Schedule 2
                                                                   Page 1 of 1





                                 AMEREN SERVICES
                     EXPECTED ALLOCATED DIRECT COST FACTORS



      ALLOCATION NUMBER           DESCRIPTION

                  001A            Composite*
                  002A            Number of customers
                  002B            Number of gas transportation customers
                  002C            Number of electric customers
                  002D            Number of gas customers
                  002E            % to unregulated company/number of customers
                  003A            Sales (kwh and dekatherm)
                  003B            Kwh sales
                  003C            Dekatherm sales
                  004A            Number of employees
                  004B            Number of contract employees
                  004C            Number of non-contract employees
                  004D            Number of AMS & UEC employees
                  005A            O&M labor
                  006A            Total revenues
                  006B            Electric revenues
                  006C            Gas revenues
                  007A            Total capitalization
                  007B            % to Ameren Corporation/total capitalization
                  008A            Total assets
                  009A            Construction expenditures
                  010A            Peak load (electric)
                  010B            Peak load (gas)
                  011A            Generating capacity
                  012A            Gas throughput (includes transportation)
                  013A            CPU cycles - mainframe
                  013B            CPU cycles - UNIX
                  015A            Current tax expense
                  016A            Number of vehicles



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
                  Sales (kwh and dekatherm)
                  Number of customers
                  Number of employees


<PAGE>


                                                                      Appendix B
 




                               SERVICES AGREEMENT
                                     Between
                             AMEREN SERVICES COMPANY
                                       and
                         AMEREN DEVELOPMENT CORPORATION

     THIS AGREEMENT,  made and entered into this 27th day of March, 1998, by and
between the following Parties:  AMEREN SERVICES COMPANY  (hereinafter  sometimes
referred  to  as  "Service  Company"),   a  Missouri  corporation;   and  AMEREN
DEVELOPMENT CORPORATION and its subsidiaries ("Ameren Development Corporation"),
a Missouri  Corporation  (hereinafter  sometimes  referred  to  collectively  as
"Client Companies");

                          WITNESSETH:

     WHEREAS,  Client Companies,  desire to enter into this agreement  providing
for the  performance  by Service  Company  for the Client  Companies  of certain
services more particularly set forth herein; and


     WHEREAS,  Service Company is organized,  staffed and equipped and has filed
with the  Securities  and  Exchange  Commission  ("the SEC") to be a  subsidiary
service company under Section 13 of the Public Utilities  Holding Company Act of
1935 (the  "Act") to render to Ameren  Corporation,  and other  subsidiaries  of
Ameren Corporation, certain services as herein provided; and

     WHEREAS, to maximize efficiency, and to achieve merger related savings, the
Client  Companies  desire to avail  themselves  of the  advisory,  professional,
technical and other services of

<PAGE>


persons employed or to be retained by Service Company, and to compensate Service
Company appropriately for such services,

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements herein, the parties hereto agree as follows:

Section 1. Agreement to Furnish Services

     Service   Company   agrees  to  furnish  to  Client   Companies  and  their
subsidiaries,  if any,  upon the  terms  and  conditions  herein  provided,  the
services  hereinafter referred to and described in Section 2, at such times, for
such  period  and in such  manner  as  Client  Companies  may from  time to time
request.  Service  Company  will keep  itself and its  personnel  available  and
competent  to  render  to  Client  Companies  such  services  so  long  as it is
authorized so to do by the appropriate federal and state regulatory agencies.

Section 2.  Services to be Performed

     The services to be provided by Service Company hereunder may, upon request,
include the services as set out in Schedule 1,  attached  hereto and made a part
hereof. A revised Schedule 1 will be provided on an annual basis.

     In addition to the Services set out in Schedule 1,  Service  Company  shall
render advice and  assistance  in  connection  with such other matters as Client
Companies may request and Service Company  determines it is able to perform with
respect to Client Companies' business and operations.

Section 3.  Compensation of Service Company

     As compensation for such services rendered to it by Service

                                      -2-

<PAGE>


Company,  Client  Companies  hereby agree to pay to Service  Company the cost of
such services,  computed in accordance  with  applicable  rules and  regulations
(including,  but not limited to, Rules 90 and 91) under the Act and  appropriate
accounting standards.

     Compensation  to be paid by Client  Companies  shall include direct charges
and  Client  Companies'  fairly  allocated  pro rata share of certain of Service
Company's costs, determined as set out on Schedule 2, attached hereto and made a
part hereof.

Section 4.  Securities and Exchange Commission Rules

     It is the intent of the Parties that the determination of the costs as used
in this Agreement shall be consistent with, and in compliance with the rules and
regulations  of the SEC,  as they now read or  hereafter  may be modified by the
Commission.

Section 5.  Service Requests

     Services will be performed in  accordance  with a Service  Request  system,
consisting  of work orders  established  to capture  the various  types of costs
incurred by Service  Company.  Costs will be charged to the appropriate  service
requests,  which  will  then be the  basis  for the  billing  of costs to Client
Companies.

Section 6.  Payment

     Payment  shall be by making  remittance  of the amount  billed or by making
appropriate accounting entries on the books of the companies.

     Payment  shall be  accomplished  on a  monthly  basis,  and  remittance  or
accounting entries shall be completed within 60 days of billing.

                                      -3-

<PAGE>


Section 7.  Ameren Corporation

     Except as authorized by rule,  regulation,  or order of the  Securities and
Exchange  Commission,  nothing in this Agreement  shall be read to permit Ameren
Corporation,  or any person  employed  by or acting for Ameren  Corporation,  to
provide  services  for other  Parties,  or any  companies  associated  with said
Parties.

Section 8.  Client Companies

     Except as limited by Section 7, nothing in this Agreement  shall be read to
prohibit Client Companies or their  subsidiaries from furnishing to other Ameren
system  companies or their  subsidiaries  services herein referred to, under the
same conditions and terms as set out for Service Company.

Section 9.  Effective Date and Termination

     This  Agreement  shall  remain  in  effect  from the date  executed  unless
terminated  by mutual  agreement  or by any Party  giving at least  sixty  days'
written notice to the other Parties prior to the beginning of any calendar year,
each Party fully reserving the right to so terminate the Agreement.

     This  Agreement may also be terminated to the extent that  performance  may
conflict  with any rule,  regulation  or order of the  Securities  and  Exchange
Commission adopted before or after the making of this Agreement.

Section 10.  Assignment

     This  Agreement and the rights  hereunder  may not be assigned  without the
mutual written consent of all Parties hereto.

                                      -4-

<PAGE>



    IN WITNESS  WHEREOF,  the Parties  hereto have caused this  Agreement to be 
executed and attested by their authorized  officers as of the day and year first
above written.

                                            AMEREN SERVICES COMPANY

                                            By ______________________________

                                            Title ___________________________
ATTEST:

By ______________________

Title ___________________

                                            AMEREN DEVELOPMENT CORPORATION

                                            By ______________________________

                                            Title ___________________________
ATTEST:

By ______________________

Title ___________________


                                      -5-

<PAGE>

                                                                    Schedule 1
                                                                   Page 1 of 9




                        DESCRIPTION OF EXPECTED SERVICES
                      TO BE PROVIDED BY AMEREN SERVICES AND
                     EXPECTED DIRECT COST ALLOCATION FACTORS


Description of Expected Services to be Provided

     A description of the expected services to be provided by Ameren Services is
detailed  below.  Identifiable  costs  for all of the  functional  organizations
listed  below  will  be  directly   charged  to  Ameren   Corporation   and  its
subsidiaries, whenever possible.

     For costs that cannot be directly  assigned or  distributed,  the  expected
direct cost  allocation  factors are  reflected  below for each Ameren  Services
department.

         a)  Building Service

         Description - Provide facility management services for owned and leased
         facilities, excluding power plants. To the extent that leasing arrange-
         ments are established between Ameren Services and/or Ameren Corporation
         and its subsidiaries, lease costs will include rent for space  occupied
         and  applicable  services,  such  as  operation  and   maintenance   of
         structures, capital improvements, interior space planning, security and
         janitorial.  As  appropriate, lease  costs  will be  allocated based on
         square feet occupied and the allocation factors listed below.

         Expected Allocation Factors - 1) number of employees; 2) operations and
         maintenance labor; 3) total capitalization; and 4) total assets

         b)  Controller's

         Description -  Perform  all  accounting  services necessary to properly
         maintain  and  report on the  books and  records of Ameren and its sub-
         sidiaries.  Provide investor relations services.

         Expected Allocation Factors - 1) composite*;  2) total  capitalization;
         and 3) total assets

         c)  Corporate Communications

         Description - Develop strategies for advertising and marketing efforts,
         develop employee communication programs, coordinate community relations
         efforts and develop policies and procedures for media relations.

<PAGE>


                                                                     Schedule 1
                                                                    Page 2 of 9


         Expected Allocation Factors - 1) composite*;  2) total  capitalization;
         and 3) total assets

         d)  Corporate Planning

         Description - Provide rate engineering, interchange marketing, resource
         planning and business analysis services.

         Expected Allocation Factors - 1) composite*; 2) kwh sales; 3) peak load
         [electric]; 4) total capitalization; and 5) total assets

         e) Customer Services/Division Support

         Description - Answer customer inquiries pertaining to electric/gas ser-
         vice usage and  perform credit  activities.  Provide technical  support
         relating  to  planning,  engineering,  constructing  and  operating the
         distribution  and  transmission systems.  Provide technical support and
         maintenance of  protective  relay schemes,  station meter work,  system
         testing and data acquisition systems.

         Expected Allocation Factors -  1) number of customers; 2) number of em-
         ployees; and 3) operations and maintenance labor

         f)  Economic Development

         Description - Provide community and business  development services,  as
         well as natural gas development services.   Analyze community and busi-
         ness development opportunities.

         Expected Allocation Factors - 1) number of customers; 2) sales [kwh and
         dekatherm]; 3) total capitalization; and 4) total assets

         g)  Energy Supply

         Coordinate the use of the generating, transmission and  interconnection
         facilities to provide economical and reliable energy.

         Expected Allocation Factors - 1) kwh sales

<PAGE>


                                                                     Schedule 1
                                                                    Page 3 of 9


        h)  Engineering and Construction 

         Description  -  Provide  professional  services  related to engineering
         studies, design, procurement, planning, building and management of pro-
         jects.  Study technology that may reduce costs of producing, delivering
         and using electricity.

         Expected Allocation Factors - 1)  peak  load [electric];  2) generating
         capacity; and 3) construction expenditures

         i)  Environmental Services & Safety

         Description - Perform analysis and advocacy of  regulatory and legisla-
         tive issues in the areas of environment, health and safety. Communicate
         final regulatory requirements to operating groups.  Provide  assistance
         and support  and complianc  review in meeting those requirements. Over-
         see hazardous substance site investigation and remediation activities.

         Expected Allocation Factors -  1) number of  employees;  2)  generating
         capacity; 3) operations and maintenance labor; and 4) construction  ex-
         penditures

         j)  Executive

         Description - Provide executive management duties  for  all  applicable
         activities at the department, function and officer levels.

         Expected Allocation Factors - 1) total capitalization; 2) total assets;
         and 3) sales [kwh and dekatherm]

         k)  Fossil Fuel Procurement

         Description -  Provide resources  necessary  to  procure  fuel  for the
         fossil power plants and minimize production costs.

         Expected Allocation Factors - 1) kwh sales

         l)  Gas Supply

         Description - Provide gas supply and pipeline capacity procurement  and
         management services.  Develop  policies, procedures and standards which
         govern the design, construction and operation of the gas systems.

<PAGE>

                                                                     Schedule 1
                                                                    Page 4 of 9



         Expected Allocation  Factors - 1)  dekatherm  sales;  2) gas throughput
         [includes transportation]; and 3) peak load [gas]

         m)  General Counsel

         Description - Provide general legal  advice related  to all  applicable
         activities and  legal  services in  regards to legislative  activities,
         regulatory  agencies  and  security  matters.  Make regulatory filings,
         maintain  minutes  of  the  board  of  directors,  conduct  stockholder
         meetings and procure property and casualty insurance bonds.

         Expected Allocation Factors - 1) composite*; 2)  total  capitalization;
         and 3) total assets

         n)  Human Resources

         Description - Administer  and  negotiate  employee  benefits  including
         pensions, major medical, long-term  disability, life insurance, defined
         contribution  plans,  executive  benefit  and  flexible spending plans.
         Provide  employment  services, including required  regulatory reporting
         and maintenance of personnel records.  Provide  employee  training  and
         communications services.

         Expected  Allocation  Factors - 1) number of employees;  2)  total cap-
         italization; 3) total assets; and 4) operation and maintenance labor

         o)  Industrial Relations

         Description - Negotiate, represent and administer provisions  of  labor
         agreements applicable to unions representing union employees.

         Expected Allocation Factors - 1) number of employees; and 2)  operation
         and maintenance labor

         p)  Information Services

         Description  -  Provide  for the  development and operation of computer
         software,  telecommunications  and  other  equipment  used  to  conduct
         business and engineering activities.  Maintain all billing  records and
         process customer meter readings.

         Expected Allocation Factors - 1) composite*; 2) number of customers; 3)
         number of employees;  4)CPU cycles;  and 5)  operation  and maintenance
         labor

<PAGE>

                                                                     Schedule 1
                                                                    Page 5 of 9


         q)  Internal Audit

         Description  -  Audit  company operations, perform operational and pro-
         ductivity  eviews, review  justifications for capital projects and per-
         form quality assurance reviews.

         Expected Allocation Factors - 1) composite*; 2) number of customers; 3)
         number of employees; and 4) operation and maintenance labor

         r)  Marketing

         Description - Provide marketing services including account  management,
         program development, market research and customer energy services.

         Expected Allocation Factors -  1)  sales  [kwh  and  dekatherm]; and 2)
         total assets

         s)  Merger Coordination

         Description  -  Monitor  programs  to achieve savings, merger costs and
         position reductions as they relate to the implementation plans.

         Expected Allocation Factors - 1) composite*;  2) total  capitalization;
         and 3) total assets

         t)  Motor Transportation

         Description - Provide engineering, support, and mechanical servicing of
         vehicles, procurement of vehicles and safety and training programs.

         Expected Allocation Factors - 1) number of vehicles

         u)  Purchasing

         Description  -  Provide procurement  of goods  and services  other than
         fuel.  Provide materials inventory management services.

         Expected Allocation Factors -  1)  composite*;  2) total assets; and 3)
         construction expenditures

<PAGE>

                                                                     Schedule 1
                                                                    Page 6 of 9


         v) Real Estate

         Description  -  Acquire necessary land rights and permits including co-
         ordination of site selection.  Maintain existing land rights while per-
         mitting licenses and leases to minimize investment or costs of  holding
         property.

         Expected Allocation Factors -  1) composite*;  2) number  of customers;
         and 3) total assets

         w)  Stores

         Description - Provide clerical, stenographic, administrative  and Elec-
         tronic Data systems support. Provide engineering support and manage and
         direct stores operations.

         Expected Allocation Factors - 1) composite*

         x)  Tax

         Description - Research and consult  on tax  issues in  connection  with
         federal, state and local tax compliance and planning matters, including
         the preparation and filing of returns.

         Expected Allocation Factors - 1) composite*; 2) current tax expense; 3)
         total capitalization; and 4) total assets

         y)  Treasurer's

         Description - Provide treasury operation, mailing,  financial planning,
         investments, and executive payroll and pension disbursement services.

         Expected Allocation Factors - 1) composite*; 2) number of customers; 3)
         number of employees; 4) total capitalization; and 5) total assets



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
         Sales (kwh and dekatherm)
         Number of customers
         Number of employees

<PAGE>


                                                                     Schedule 1
                                                                    Page 7 of 9


Allocation Factors

The following allocation factors will be utilized as outlined above.

Number of Customers - Based on the number of customers  (electric and/or gas) at
the end of the most  recent  calendar  year.  The  numerator  of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Sales - Based on the sales  volume (kwh and/or  dekatherms)  for the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

Number  of  Employees  - Based  on the  number  of  employees  (contract  and/or
non-contract, or electric operating and/or gas operating) at the end of the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Composite  - Based on an equal  weighting  Sales  (kwh &  dekatherm),  Number of
Customers  (total),  and Number of Employees  (total)  allocation  factors.  The
numerator  of which is the simple  average  of the above  three  factors  for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be  determined  annually  and/or at such time as may be required
due to a significant change in circumstances.

Operations & Maintenance  Labor - Based on the  Operations &  Maintenance  Labor
(electric  and/or gas) for the most recent calendar year. The numerator of which
is for an Operating  Company or an affected  affiliate  and the  denominator  of
which is for all Operating  Companies  and affected  affiliate  companies.  This
ratio will be determined annually, and/or at such time as may be required due to
a significant change in circumstances.

Revenues - Based on revenues  (electric and/or gas) for the most recent calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate  company.  The  denominator  of which is for all  Operating  Companies
and/or affected affiliate companies.  This ratio will be determined annually, or
at such time as may be required due to a significant change in circumstances.

Total Capitalization - Based on total capitalization (total common

<PAGE>

                                                                     Schedule 1
                                                                    Page 8 of 9



stockholder's  equity,  preferred  stock,  and long term debt) at the end of the
most recent calendar year. The numerator of which is for an Operating Company or
an affected  affiliate  company.  The  denominator of which is for all Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Total  Assets - Based on total  assets  at the end of the most  recent  calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate company.  The denominator of which is for all Operating  Companies and
affected affiliate companies.  This ratio will be determined annually, and/or at
such time as may be required due to a significant change in circumstances.

Construction  Expenditures  - Based on  construction  expenditures  for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Peak Load  (electric)  - Based on the  highest  monthly  maximum  megawatt  load
(60-minute  integration)  for the most recent  calendar  year.  The numerator of
which  is for an  Operating  Company  and the  denominator  of  which is for all
Operating Companies. This ratio will be determined annually, and/or at such time
as may be required due to a significant change in circumstances.

Peak Load  (gas) - Based on the  highest  daily  send out in  therms  (excluding
transportation) for the most recent calendar year. The numerator of which is for
an  Operating  Company  and  the  denominator  of  which  is for  all  Operating
Companies. This ratio will be determined annually, and/or at such time as may be
required due to a significant change in circumstances.

Generating Capacity  (nameplate) - Based on installed capacity nameplate ratings
at the end of the most recent  calendar  year.  The numerator of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Gas   Throughput  -  Based  on  gas   throughput   in   dekatherms   (sales  and
transportation) for the most recent calendar year. The numerator of which is for
an Operating Company.  The denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

CPU Cycles - Based on cpu cycles (by application) for the most

<PAGE>


                                                                     Schedule 1
                                                                    Page 9 of 9


recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Current  Tax  Expense - Based on taxes  charged  (income and other) for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Number of  Vehicles - Based on number of  vehicles at the end of the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

In  addition  to  the  allocation  factors  listed  above,   appropriate  direct
allocations  will be made for  costs  benefiting  a single  affiliate.  Indirect
allocations  will  also  be  made  to all  affiliates,  including  non-regulated
companies and Ameren Corporation.

It may be  necessary  to  allocate a  percentage  of total  costs  allocated  to
non-regulated  companies or Ameren Corporation (see below). This will be done as
a  sub-factor  of  existing  allocation  factors.  For  example,   allocating  a
percentage of customer service costs to  non-regulated  companies and allocating
remaining costs based on number of customers.  Also,  allocating a percentage of
video presentation  costs to Ameren  Corporation and allocating  remaining costs
based on capitalization.

Non-Regulated - Based on a percentage of total costs allocated to  non-regulated
companies when existing  allocation  methods do not adequately reflect the level
of services or benefits  received.  After  allocating  this  percentage of total
costs to non-regulatory company, the remaining costs will be allocated to Ameren
Corporation  and/or  its  subsidiaries,  as  appropriate,  based upon one of the
factors above.

Corporate - Based on a percentage of total costs allocated to Ameren Corporation
(AMC) when existing  allocation  methods do not adequately  reflect the level of
services or benefits  received.  After allocating this percentage of total costs
to AMC,  the  remaining  costs will be  allocated  based upon one of the factors
above.

<PAGE>

                                                                 Schedule 2
                                                                 Page 1 of 1





                                 AMEREN SERVICES
                     EXPECTED ALLOCATED DIRECT COST FACTORS



      ALLOCATION NUMBER       DESCRIPTION

                  001A        Composite*
                  002A        Number of customers
                  002B        Number of gas transportation customers
                  002C        Number of electric customers
                  002D        Number of gas customers
                  002E        % to unregulated company/number of customers
                  003A        Sales (kwh and dekatherm)
                  003B        Kwh sales
                  003C        Dekatherm sales
                  004A        Number of employees
                  004B        Number of contract employees
                  004C        Number of non-contract employees
                  004D        Number of AMS & UEC employees
                  005A        O&M labor
                  006A        Total revenues
                  006B        Electric revenues
                  006C        Gas revenues
                  007A        Total capitalization
                  007B        % to Ameren Corporation/total capitalization
                  008A        Total assets
                  009A        Construction expenditures
                  010A        Peak load (electric)
                  010B        Peak load (gas)
                  011A        Generating capacity
                  012A        Gas throughput (includes transportation)
                  013A        CPU cycles - mainframe
                  013B        CPU cycles - UNIX
                  015A        Current tax expense
                  016A        Number of vehicles



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
                  Sales (kwh and dekatherm)
                  Number of customers
                  Number of employees


<PAGE>


 
 
                                                                      Appendix C



                               SERVICES AGREEMENT
                                     Between
                             AMEREN SERVICES COMPANY
                                       and
                       AMEREN ENERGY COMMUNICATIONS, INC.

     THIS  AGREEMENT,  made and entered into this 1st day of July,  1998, by and
between the following Parties:  AMEREN SERVICES COMPANY  (hereinafter  sometimes
referred to as "Service  Company"),  a Missouri  corporation;  and AMEREN ENERGY
COMMUNICATIONS,  INC. and its subsidiaries  ("Ameren Energy  Communications")  a
Missouri Corporation  (hereinafter sometimes referred to collectively as "Client
Companies");

                      WITNESSETH:

     WHEREAS,  Client Companies,  desire to enter into this agreement  providing
for the  performance  by Service  Company  for the Client  Companies  of certain
services more particularly set forth herein; and

     WHEREAS,  Service Company is organized,  staffed and equipped and has filed
with the  Securities  and  Exchange  Commission  ("the SEC") to be a  subsidiary
service company under Section 13 of the Public Utilities  Holding Company Act of
1935 (the  "Act") to render to Ameren  Corporation,  and other  subsidiaries  of
Ameren Corporation, certain services as herein provided; and

     WHEREAS, to maximize efficiency, and to achieve merger related savings, the
Client  Companies  desire to avail  themselves  of the  advisory,  professional,
technical and other services of

<PAGE>


persons employed or to be retained by Service Company, and to compensate Service
Company appropriately for such services,

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements herein, the parties hereto agree as follows:

Section 1. Agreement to Furnish Services

     Service   Company   agrees  to  furnish  to  Client   Companies  and  their
subsidiaries,  if any,  upon the  terms  and  conditions  herein  provided,  the
services  hereinafter referred to and described in Section 2, at such times, for
such  period  and in such  manner  as  Client  Companies  may from  time to time
request.  Service  Company  will keep  itself and its  personnel  available  and
competent  to  render  to  Client  Companies  such  services  so  long  as it is
authorized so to do by the appropriate federal and state regulatory agencies.

Section 2.  Services to be Performed

     The services to be provided by Service Company hereunder may, upon request,
include the services as set out in Schedule 1,  attached  hereto and made a part
hereof. A revised Schedule 1 will be provided on an annual basis.

     In addition to the Services set out in Schedule 1,  Service  Company  shall
render advice and  assistance  in  connection  with such other matters as Client
Companies may request and Service Company  determines it is able to perform with
respect to Client Companies' business and operations.

Section 3.  Compensation of Service Company

     As compensation for such services rendered to it by Service

                                      -2-

<PAGE>

Company,  Client  Companies  hereby agree to pay to Service  Company the cost of
such services,  computed in accordance  with  applicable  rules and  regulations
(including,  but not limited to, Rules 90 and 91) under the Act and  appropriate
accounting standards.

     Compensation  to be paid by Client  Companies  shall include direct charges
and  Client  Companies'  fairly  allocated  pro rata share of certain of Service
Company's costs, determined as set out on Schedule 2, attached hereto and made a
part hereof.

Section 4.  Securities and Exchange Commission Rules

     It is the intent of the Parties that the determination of the costs as used
in this Agreement shall be consistent with, and in compliance with the rules and
regulations  of the SEC,  as they now read or  hereafter  may be modified by the
Commission.

Section 5.  Service Requests

     Services will be performed in  accordance  with a Service  Request  system,
consisting  of work orders  established  to capture  the various  types of costs
incurred by Service  Company.  Costs will be charged to the appropriate  service
requests,  which  will  then be the  basis  for the  billing  of costs to Client
Companies.

Section 6.  Payment

     Payment  shall be by making  remittance  of the amount  billed or by making
appropriate accounting entries on the books of the companies.

     Payment  shall be  accomplished  on a  monthly  basis,  and  remittance  or
accounting entries shall be completed within 60 days of billing.

                                      -3-

<PAGE>

Section 7.  Ameren Corporation

     Except as authorized by rule,  regulation,  or order of the  Securities and
Exchange  Commission,  nothing in this Agreement  shall be read to permit Ameren
Corporation,  or any person  employed  by or acting for Ameren  Corporation,  to
provide  services  for other  Parties,  or any  companies  associated  with said
Parties.

Section 8.  Client Companies

     Except as limited by Section 7, nothing in this Agreement  shall be read to
prohibit Client Companies or their  subsidiaries from furnishing to other Ameren
system  companies or their  subsidiaries  services herein referred to, under the
same conditions and terms as set out for Service Company.

Section 9.  Effective Date and Termination

     This  Agreement  shall  remain  in  effect  from the date  executed  unless
terminated  by mutual  agreement  or by any Party  giving at least  sixty  days'
written notice to the other Parties prior to the beginning of any calendar year,
each Party fully reserving the right to so terminate the Agreement.

     This  Agreement may also be terminated to the extent that  performance  may
conflict  with any rule,  regulation  or order of the  Securities  and  Exchange
Commission adopted before or after the making of this Agreement.

Section 10.  Assignment

     This  Agreement and the rights  hereunder  may not be assigned  without the
mutual written consent of all Parties hereto.

                                      -4-

<PAGE>



     IN WITNESS  WHEREOF,  the Parties  hereto have caused this  Agreement to be
executed and attested by their authorized  officers as of the day and year first
above written.

                                             AMEREN SERVICES COMPANY

                                             By ______________________________

                                             Title ___________________________
ATTEST:

By ______________________

Title ___________________

                                             AMEREN ENERGY COMMUNICATIONS, INC.

                                             By ______________________________

                                             Title ___________________________
ATTEST:

By ______________________

Title ___________________

                                      -5-


<PAGE>

                                                                   Schedule 1
                                                                  Page 1 of 9




                        DESCRIPTION OF EXPECTED SERVICES
                      TO BE PROVIDED BY AMEREN SERVICES AND
                     EXPECTED DIRECT COST ALLOCATION FACTORS


Description of Expected Services to be Provided

A  description  of the  expected  services to be provided by Ameren  Services is
detailed  below.  Identifiable  costs  for all of the  functional  organizations
listed  below  will  be  directly   charged  to  Ameren   Corporation   and  its
subsidiaries, whenever possible.

For costs that cannot be directly  assigned or distributed,  the expected direct
cost allocation factors are reflected below for each Ameren Services department.

         a)  Building Service

          Description  -  Provide  facility  management  services  for owned and
          leased facilities,  excluding power plants. To the extent that leasing
          arrangements  are  established  between Ameren  Services and/or Ameren
          Corporation  and its  subsidiaries,  lease costs will include rent for
          space  occupied  and  applicable  services,   such  as  operation  and
          maintenance  of  structures,  capital  improvements,   interior  space
          planning, security and janitorial. As appropriate, lease costs will be
          allocated  based on square feet  occupied and the  allocation  factors
          listed below.

          Expected  Allocation  Factors - 1) number of employees;  2) operations
          and maintenance labor; 3) total capitalization; and 4) total assets

         b)  Controller's

          Description - Perform all  accounting  services  necessary to properly
          maintain  and  report  on the  books and  records  of  Ameren  and its
          subsidiaries. Provide investor relations services.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         c)  Corporate Communications

          Description  -  Develop   strategies  for  advertising  and  marketing
          efforts, develop employee communication programs, coordinate community
          relations  efforts  and  develop  policies  and  procedures  for media
          relations.

<PAGE>

                                                                     Schedule 1
                                                                    Page 2 of 9


          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         d)  Corporate Planning

          Description  -  Provide  rate  engineering,   interchange   marketing,
          resource planning and business analysis services.

          Expected  Allocation  Factors - 1) composite*;  2) kwh sales;  3) peak
          load [electric]; 4) total capitalization; and 5) total assets

         e) Customer Services/Division Support

          Description - Answer  customer  inquiries  pertaining to  electric/gas
          service usage and perform credit activities. Provide technical support
          relating to planning,  engineering,  constructing  and  operating  the
          distribution and transmission  systems.  Provide technical support and
          maintenance of protective  relay schemes,  station meter work,  system
          testing and data acquisition systems.

          Expected  Allocation  Factors - 1) number of  customers;  2) number of
          employees; and 3) operations and maintenance labor

         f)  Economic Development

          Description - Provide community and business development  services, as
          well as  natural  gas  development  services.  Analyze  community  and
          business development opportunities.

          Expected  Allocation  Factors - 1) number of customers;  2) sales [kwh
          and dekatherm]; 3) total capitalization; and 4) total assets

         g)  Energy Supply

          Coordinate the use of the generating, transmission and interconnection
          facilities to provide economical and reliable energy.

          Expected Allocation Factors - 1) kwh sales

<PAGE>

                                                                     Schedule 1
                                                                    Page 3 of 9



         h)  Engineering and Construction

          Description - Provide  professional  services  related to  engineering
          studies,  design,  procurement,  planning,  building and management of
          projects.  Study  technology  that  may  reduce  costs  of  producing,
          delivering and using electricity.

          Expected  Allocation Factors - 1) peak load [electric];  2) generating
          capacity; and 3) construction expenditures

         i)  Environmental Services & Safety

          Description  -  Perform   analysis  and  advocacy  of  regulatory  and
          legislative  issues in the areas of  environment,  health and  safety.
          Communicate final regulatory requirements to operating groups. Provide
          assistance  and  support  and  compliance   review  in  meeting  those
          requirements.  Oversee  hazardous  substance  site  investigation  and
          remediation activities.

          Expected  Allocation  Factors - 1) number of employees;  2) generating
          capacity;  3) operations and  maintenance  labor;  and 4) construction
          expenditures

         j)  Executive

          Description - Provide  executive  management duties for all applicable
          activities at the department, function and officer levels.

          Expected  Allocation  Factors  - 1)  total  capitalization;  2)  total
          assets; and 3) sales [kwh and dekatherm]

         k)  Fossil Fuel Procurement

          Description  - Provide  resources  necessary  to procure  fuel for the
          fossil power plants and minimize production costs.

          Expected Allocation Factors - 1) kwh sales

         l)  Gas Supply

          Description - Provide gas supply and pipeline capacity procurement and
          management services. Develop policies,  procedures and standards which
          govern the design, construction and operation of the gas systems.

<PAGE>

                                                                     Schedule 1
                                                                    Page 4 of 9



          Expected  Allocation  Factors - 1) dekatherm  sales; 2) gas throughput
          [includes transportation]; and 3) peak load [gas]

         m)  General Counsel

          Description - Provide  general legal advice  related to all applicable
          activities and legal  services in regards to  legislative  activities,
          regulatory  agencies and security  matters.  Make regulatory  filings,
          maintain  minutes  of the  board  of  directors,  conduct  stockholder
          meetings and procure property and casualty insurance bonds.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         n)  Human Resources

          Description - Administer  and negotiate  employee  benefits  including
          pensions, major medical, long-term disability, life insurance, defined
          contribution  plans,  executive  benefit and flexible  spending plans.
          Provide employment  services,  including required regulatory reporting
          and maintenance of personnel  records.  Provide employee  training and
          communications services.

          Expected  Allocation  Factors  - 1)  number  of  employees;  2)  total
          capitalization;  3) total  assets;  and 4) operation  and  maintenance
          labor

         o)  Industrial Relations

          Description - Negotiate,  represent and administer provisions of labor
          agreements applicable to unions representing union employees.

          Expected Allocation Factors - 1) number of employees; and 2) operation
          and maintenance labor

         p)  Information Services

          Description  - Provide for the  development  and operation of computer
          software,  telecommunications  and  other  equipment  used to  conduct
          business and engineering activities.  Maintain all billing records and
          process customer meter readings.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; 4)CPU cycles; and 5) operation and maintenance
          labor

<PAGE>

                                                                     Schedule 1
                                                                    Page 5 of 9


         q)  Internal Audit

          Description  -  Audit  company  operations,  perform  operational  and
          productivity  reviews,  review justifications for capital projects and
          perform quality assurance reviews.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; and 4) operation and maintenance labor

         r)  Marketing

          Description - Provide marketing services including account management,
          program development, market research and customer energy services.

          Expected  Allocation  Factors - 1) sales [kwh and  dekatherm];  and 2)
          total assets

         s)  Merger Coordination

          Description - Monitor  programs to achieve  savings,  merger costs and
          position reductions as they relate to the implementation plans.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         t)  Motor Transportation

          Description - Provide  engineering,  support, and mechanical servicing
          of vehicles, procurement of vehicles and safety and training programs.

          Expected Allocation Factors - 1) number of vehicles

         u)  Purchasing

          Description  - Provide  procurement  of goods and services  other than
          fuel. Provide materials inventory management services.

          Expected  Allocation Factors - 1) composite*;  2) total assets; and 3)
          construction expenditures


<PAGE>

                                                                     Schedule 1
                                                                    Page 6 of 9


         v) Real Estate

          Description  - Acquire  necessary  land rights and  permits  including
          coordination  of site selection.  Maintain  existing land rights while
          permitting  licenses  and leases to  minimize  investment  or costs of
          holding property.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          and 3) total assets

         w)  Stores

          Description  -  Provide  clerical,  stenographic,  administrative  and
          Electronic  Data  systems  support.  Provide  engineering  support and
          manage and direct stores operations.

          Expected Allocation Factors - 1) composite*

         x)  Tax

          Description  - Research and consult on tax issues in  connection  with
          federal,   state  and  local  tax  compliance  and  planning  matters,
          including the preparation and filing of returns.

          Expected  Allocation Factors - 1) composite*;  2) current tax expense;
          3) total capitalization; and 4) total assets

         y)  Treasurer's

          Description - Provide treasury operation, mailing, financial planning,
          investments, and executive payroll and pension disbursement services.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; 4) total capitalization; and 5) total assets



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
         Sales (kwh and dekatherm)
         Number of customers
         Number of employees


<PAGE>

                                                                     Schedule 1
                                                                    Page 7 of 9


Allocation Factors

The following allocation factors will be utilized as outlined above.

Number of Customers - Based on the number of customers  (electric and/or gas) at
the end of the most  recent  calendar  year.  The  numerator  of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Sales - Based on the sales  volume (kwh and/or  dekatherms)  for the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

Number  of  Employees  - Based  on the  number  of  employees  (contract  and/or
non-contract, or electric operating and/or gas operating) at the end of the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Composite  - Based on an equal  weighting  Sales  (kwh &  dekatherm),  Number of
Customers  (total),  and Number of Employees  (total)  allocation  factors.  The
numerator  of which is the simple  average  of the above  three  factors  for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be  determined  annually  and/or at such time as may be required
due to a significant change in circumstances.

Operations & Maintenance  Labor - Based on the  Operations &  Maintenance  Labor
(electric  and/or gas) for the most recent calendar year. The numerator of which
is for an Operating  Company or an affected  affiliate  and the  denominator  of
which is for all Operating  Companies  and affected  affiliate  companies.  This
ratio will be determined annually, and/or at such time as may be required due to
a significant change in circumstances.

Revenues - Based on revenues  (electric and/or gas) for the most recent calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate  company.  The  denominator  of which is for all  Operating  Companies
and/or affected affiliate companies.  This ratio will be determined annually, or
at such time as may be required due to a significant change in circumstances.

Total Capitalization - Based on total capitalization (total common


<PAGE>

                                                                     Schedule 1
                                                                    Page 8 of 9


stockholder's  equity,  preferred  stock,  and long term debt) at the end of the
most recent calendar year. The numerator of which is for an Operating Company or
an affected  affiliate  company.  The  denominator of which is for all Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Total  Assets - Based on total  assets  at the end of the most  recent  calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate company.  The denominator of which is for all Operating  Companies and
affected affiliate companies.  This ratio will be determined annually, and/or at
such time as may be required due to a significant change in circumstances.

Construction  Expenditures  - Based on  construction  expenditures  for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Peak Load  (electric)  - Based on the  highest  monthly  maximum  megawatt  load
(60-minute  integration)  for the most recent  calendar  year.  The numerator of
which  is for an  Operating  Company  and the  denominator  of  which is for all
Operating Companies. This ratio will be determined annually, and/or at such time
as may be required due to a significant change in circumstances.

Peak Load  (gas) - Based on the  highest  daily  send out in  therms  (excluding
transportation) for the most recent calendar year. The numerator of which is for
an  Operating  Company  and  the  denominator  of  which  is for  all  Operating
Companies. This ratio will be determined annually, and/or at such time as may be
required due to a significant change in circumstances.

Generating Capacity  (nameplate) - Based on installed capacity nameplate ratings
at the end of the most recent  calendar  year.  The numerator of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Gas   Throughput  -  Based  on  gas   throughput   in   dekatherms   (sales  and
transportation) for the most recent calendar year. The numerator of which is for
an Operating Company.  The denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

CPU Cycles - Based on cpu cycles (by application) for the most


<PAGE>

                                                                     Schedule 1
                                                                    Page 9 of 9

recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Current  Tax  Expense - Based on taxes  charged  (income and other) for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Number of  Vehicles - Based on number of  vehicles at the end of the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

In  addition  to  the  allocation  factors  listed  above,   appropriate  direct
allocations  will be made for  costs  benefiting  a single  affiliate.  Indirect
allocations  will  also  be  made  to all  affiliates,  including  non-regulated
companies and Ameren Corporation.

It may be  necessary  to  allocate a  percentage  of total  costs  allocated  to
non-regulated  companies or Ameren Corporation (see below). This will be done as
a  sub-factor  of  existing  allocation  factors.  For  example,   allocating  a
percentage of customer service costs to  non-regulated  companies and allocating
remaining costs based on number of customers.  Also,  allocating a percentage of
video presentation  costs to Ameren  Corporation and allocating  remaining costs
based on capitalization.

Non-Regulated - Based on a percentage of total costs allocated to  non-regulated
companies when existing  allocation  methods do not adequately reflect the level
of services or benefits  received.  After  allocating  this  percentage of total
costs to non-regulatory company, the remaining costs will be allocated to Ameren
Corporation  and/or  its  subsidiaries,  as  appropriate,  based upon one of the
factors above.

Corporate - Based on a percentage of total costs allocated to Ameren Corporation
(AMC) when existing  allocation  methods do not adequately  reflect the level of
services or benefits  received.  After allocating this percentage of total costs
to AMC,  the  remaining  costs will be  allocated  based upon one of the factors
above.

<PAGE>


                                                                  Schedule 2
                                                                   Page 1 of 1




                                 AMEREN SERVICES
                     EXPECTED ALLOCATED DIRECT COST FACTORS



      ALLOCATION NUMBER         DESCRIPTION

                  001A          Composite*
                  002A          Number of customers
                  002B          Number of gas transportation customers
                  002C          Number of electric customers
                  002D          Number of gas customers
                  002E          % to unregulated company/number of customers
                  003A          Sales (kwh and dekatherm)
                  003B          Kwh sales
                  003C          Dekatherm sales
                  004A          Number of employees
                  004B          Number of contract employees
                  004C          Number of non-contract employees
                  004D          Number of AMS & UEC employees
                  005A          O&M labor
                  006A          Total revenues
                  006B          Electric revenues
                  006C          Gas revenues
                  007A          Total capitalization
                  007B          % to Ameren Corporation/total capitalization
                  008A          Total assets
                  009A          Construction expenditures
                  010A          Peak load (electric)
                  010B          Peak load (gas)
                  011A          Generating capacity
                  012A          Gas throughput (includes transportation)
                  013A          CPU cycles - mainframe
                  013B          CPU cycles - UNIX
                  015A          Current tax expense
                  016A          Number of vehicles



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
                  Sales (kwh and dekatherm)
                  Number of customers
                  Number of employees


<PAGE>



                                                                      Appendix D


                               SERVICES AGREEMENT
                                     Between
                             AMEREN SERVICES COMPANY
                                       and
                               AMEREN ENERGY, INC.

     THIS AGREEMENT, made and entered into this 1st day of October, 1998, by and
between the following Parties:  AMEREN SERVICES COMPANY  (hereinafter  sometimes
referred to as "Service Company"),  a Missouri  corporation;  and AMEREN ENERGY,
INC. and its subsidiaries ("Ameren Energy"), a Missouri Corporation (hereinafter
sometimes referred to collectively as "Client Companies");

                                   WITNESSETH:

     WHEREAS,  Client Companies,  desire to enter into this agreement  providing
for the  performance  by Service  Company  for the Client  Companies  of certain
services more particularly set forth herein; and

     WHEREAS,  Service Company is organized,  staffed and equipped and has filed
with the  Securities  and  Exchange  Commission  ("the SEC") to be a  subsidiary
service company under Section 13 of the Public Utilities  Holding Company Act of
1935 (the  "Act") to render to Ameren  Corporation,  and other  subsidiaries  of
Ameren Corporation, certain services as herein provided; and

     WHEREAS, to maximize efficiency, and to achieve merger related savings, the
Client  Companies  desire to avail  themselves  of the  advisory,  professional,
technical  and other  services of


<PAGE>


persons employed or to be retained by Service Company, and to compensate Service
Company appropriately for such services,

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements herein, the parties hereto agree as follows:

Section 1. Agreement to Furnish Services

     Service   Company   agrees  to  furnish  to  Client   Companies  and  their
subsidiaries,  if any,  upon the  terms  and  conditions  herein  provided,  the
services  hereinafter referred to and described in Section 2, at such times, for
such  period  and in such  manner  as  Client  Companies  may from  time to time
request.  Service  Company  will keep  itself and its  personnel  available  and
competent  to  render  to  Client  Companies  such  services  so  long  as it is
authorized so to do by the appropriate federal and state regulatory agencies.

Section 2.  Services to be Performed

     The services to be provided by Service Company hereunder may, upon request,
include the services as set out in Schedule 1,  attached  hereto and made a part
hereof. A revised Schedule 1 will be provided on an annual basis.

     In addition to the Services set out in Schedule 1,  Service  Company  shall
render advice and  assistance  in  connection  with such other matters as Client
Companies may request and Service Company  determines it is able to perform with
respect to Client Companies' business and operations.

Section 3.  Compensation of Service Company

     As compensation for such services rendered to it by Service

                                      -2-

<PAGE>

Company,  Client  Companies  hereby agree to pay to Service  Company the cost of
such services,  computed in accordance  with  applicable  rules and  regulations
(including,  but not limited to, Rules 90 and 91) under the Act and  appropriate
accounting standards.

     Compensation  to be paid by Client  Companies  shall include direct charges
and  Client  Companies'  fairly  allocated  pro rata share of certain of Service
Company's costs, determined as set out on Schedule 2, attached hereto and made a
part hereof.

Section 4.  Securities and Exchange Commission Rules

     It is the intent of the Parties that the determination of the costs as used
in this Agreement shall be consistent with, and in compliance with the rules and
regulations  of the SEC,  as they now read or  hereafter  may be modified by the
Commission.

Section 5.  Service Requests

     Services will be performed in  accordance  with a Service  Request  system,
consisting  of work orders  established  to capture  the various  types of costs
incurred by Service  Company.  Costs will be charged to the appropriate  service
requests,  which  will  then be the  basis  for the  billing  of costs to Client
Companies.

Section 6.  Payment
 
     Payment  shall be by making  remittance  of the amount  billed or by making
appropriate accounting entries on the books of the companies.

     Payment  shall be  accomplished  on a  monthly  basis,  and  remittance  or
accounting entries shall be completed within 60 days of billing.

                                      -3-

<PAGE>

Section 7.  Ameren Corporation

     Except as authorized by rule,  regulation,  or order of the  Securities and
Exchange  Commission,  nothing in this Agreement  shall be read to permit Ameren
Corporation,  or any person  employed  by or acting for Ameren  Corporation,  to
provide  services  for other  Parties,  or any  companies  associated  with said
Parties.

Section 8.  Client Companies

     Except as limited by Section 7, nothing in this Agreement  shall be read to
prohibit Client Companies or their  subsidiaries from furnishing to other Ameren
system  companies or their  subsidiaries  services herein referred to, under the
same conditions and terms as set out for Service Company.

Section 9.  Effective Date and Termination

     This  Agreement  shall  remain  in  effect  from the date  executed  unless
terminated  by mutual  agreement  or by any Party  giving at least  sixty  days'
written notice to the other Parties prior to the beginning of any calendar year,
each Party fully reserving the right to so terminate the Agreement.

     This  Agreement may also be terminated to the extent that  performance  may
conflict  with any rule,  regulation  or order of the  Securities  and  Exchange
Commission adopted before or after the making of this Agreement.

Section 10.  Assignment

     This  Agreement and the rights  hereunder  may not be assigned  without the
mutual written consent of all Parties hereto.

                                      -4-

<PAGE>


    IN WITNESS  WHEREOF,  the Parties  hereto have caused this  Agreement to be
executed and attested by their authorized  officers as of the day and year first
above written.

                                          AMEREN SERVICES COMPANY

                                          By ______________________________

                                          Title ___________________________
ATTEST:

By ______________________

Title ___________________

                                          AMEREN ENERGY, INC.

                                          By ______________________________

                                          Title ___________________________
ATTEST:

By ______________________

Title ___________________


                                      -5-


<PAGE>

                                                                     Schedule 1
                                                                    Page 1 of 9





                        DESCRIPTION OF EXPECTED SERVICES
                      TO BE PROVIDED BY AMEREN SERVICES AND
                     EXPECTED DIRECT COST ALLOCATION FACTORS


Description of Expected Services to be Provided

A  description  of the  expected  services to be provided by Ameren  Services is
detailed  below.  Identifiable  costs  for all of the  functional  organizations
listed  below  will  be  directly   charged  to  Ameren   Corporation   and  its
subsidiaries, whenever possible.

For costs that cannot be directly  assigned or distributed,  the expected direct
cost allocation factors are reflected below for each Ameren Services department.

         a)  Building Service

          Description  -  Provide  facility  management  services  for owned and
          leased facilities,  excluding power plants. To the extent that leasing
          arrangements  are  established  between Ameren  Services and/or Ameren
          Corporation  and its  subsidiaries,  lease costs will include rent for
          space  occupied  and  applicable  services,   such  as  operation  and
          maintenance  of  structures,  capital  improvements,   interior  space
          planning, security and janitorial. As appropriate, lease costs will be
          allocated  based on square feet  occupied and the  allocation  factors
          listed below.

          Expected  Allocation  Factors - 1) number of employees;  2) operations
          and maintenance labor; 3) total capitalization; and 4) total assets

         b)  Controller's

          Description - Perform all  accounting  services  necessary to properly
          maintain  and  report  on the  books and  records  of  Ameren  and its
          subsidiaries. Provide investor relations services.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         c)  Corporate Communications

          Description  -  Develop   strategies  for  advertising  and  marketing
          efforts, develop employee communication programs, coordinate community
          relations  efforts  and  develop  policies  and  procedures  for media
          relations.

<PAGE>

                                                                     Schedule 1
                                                                    Page 2 of 9


          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         d)  Corporate Planning

          Description  -  Provide  rate  engineering,   interchange   marketing,
          resource planning and business analysis services.

          Expected  Allocation  Factors - 1) composite*;  2) kwh sales;  3) peak
          load [electric]; 4) total capitalization; and 5) total assets

         e) Customer Services/Division Support

          Description - Answer  customer  inquiries  pertaining to  electric/gas
          service usage and perform credit activities. Provide technical support
          relating to planning,  engineering,  constructing  and  operating  the
          distribution and transmission  systems.  Provide technical support and
          maintenance of protective  relay schemes,  station meter work,  system
          testing and data acquisition systems.

          Expected  Allocation  Factors - 1) number of  customers;  2) number of
          employees; and 3) operations and maintenance labor

         f)  Economic Development

          Description - Provide community and business development  services, as
          well as  natural  gas  development  services.  Analyze  community  and
          business development opportunities.

          Expected  Allocation  Factors - 1) number of customers;  2) sales [kwh
          and dekatherm]; 3) total capitalization; and 4) total assets

         g)  Energy Supply

          Coordinate the use of the generating, transmission and interconnection
          facilities to provide economical and reliable energy.

          Expected Allocation Factors - 1) kwh sales


<PAGE>

                                                                     Schedule 1
                                                                    Page 3 of 9


         h)  Engineering and Construction

          Description - Provide  professional  services  related to  engineering
          studies,  design,  procurement,  planning,  building and management of
          projects.  Study  technology  that  may  reduce  costs  of  producing,
          delivering and using electricity.

          Expected  Allocation Factors - 1) peak load [electric];  2) generating
          capacity; and 3) construction expenditures

         i)  Environmental Services & Safety

          Description  -  Perform   analysis  and  advocacy  of  regulatory  and
          legislative  issues in the areas of  environment,  health and  safety.
          Communicate final regulatory requirements to operating groups. Provide
          assistance  and  support  and  compliance   review  in  meeting  those
          requirements.  Oversee  hazardous  substance  site  investigation  and
          remediation activities.

          Expected  Allocation  Factors - 1) number of employees;  2) generating
          capacity;  3) operations and  maintenance  labor;  and 4) construction
          expenditures

         j)  Executive

          Description - Provide  executive  management duties for all applicable
          activities at the department, function and officer levels.

          Expected  Allocation  Factors  - 1)  total  capitalization;  2)  total
          assets; and 3) sales [kwh and dekatherm]

         k)  Fossil Fuel Procurement

          Description  - Provide  resources  necessary  to procure  fuel for the
          fossil power plants and minimize production costs.

          Expected Allocation Factors - 1) kwh sales

         l)  Gas Supply

          Description - Provide gas supply and pipeline capacity procurement and
          management services. Develop policies,  procedures and standards which
          govern the design, construction and operation of the gas systems.


<PAGE>

                                                                     Schedule 1
                                                                    Page 4 of 9


          Expected  Allocation  Factors - 1) dekatherm  sales; 2) gas throughput
          [includes transportation]; and 3) peak load [gas]

         m)  General Counsel

          Description - Provide  general legal advice  related to all applicable
          activities and legal  services in regards to  legislative  activities,
          regulatory  agencies and security  matters.  Make regulatory  filings,
          maintain  minutes  of the  board  of  directors,  conduct  stockholder
          meetings and procure property and casualty insurance bonds.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         n)  Human Resources

          Description - Administer  and negotiate  employee  benefits  including
          pensions, major medical, long-term disability, life insurance, defined
          contribution  plans,  executive  benefit and flexible  spending plans.
          Provide employment  services,  including required regulatory reporting
          and maintenance of personnel  records.  Provide employee  training and
          communications services.

          Expected  Allocation  Factors  - 1)  number  of  employees;  2)  total
          capitalization;  3) total  assets;  and 4) operation  and  maintenance
          labor

         o)  Industrial Relations

          Description - Negotiate,  represent and administer provisions of labor
          agreements applicable to unions representing union employees.

          Expected Allocation Factors - 1) number of employees; and 2) operation
          and maintenance labor

         p)  Information Services

          Description  - Provide for the  development  and operation of computer
          software,  telecommunications  and  other  equipment  used to  conduct
          business and engineering activities.  Maintain all billing records and
          process customer meter readings.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; 4)CPU cycles; and 5) operation and maintenance
          labor


<PAGE>

                                                                     Schedule 1
                                                                    Page 5 of 9


         q)  Internal Audit

          Description  -  Audit  company  operations,  perform  operational  and
          productivity  reviews,  review justifications for capital projects and
          perform quality assurance reviews.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; and 4) operation and maintenance labor

         r)  Marketing

          Description - Provide marketing services including account management,
          program development, market research and customer energy services.

          Expected  Allocation  Factors - 1) sales [kwh and  dekatherm];  and 2)
          total assets

         s)  Merger Coordination

          Description - Monitor  programs to achieve  savings,  merger costs and
          position reductions as they relate to the implementation plans.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         t)  Motor Transportation

          Description - Provide  engineering,  support, and mechanical servicing
          of vehicles, procurement of vehicles and safety and training programs.

          Expected Allocation Factors - 1) number of vehicles

         u)  Purchasing

          Description  - Provide  procurement  of goods and services  other than
          fuel. Provide materials inventory management services.

          Expected  Allocation Factors - 1) composite*;  2) total assets; and 3)
          construction expenditures


<PAGE>

                                                                     Schedule 1
                                                                    Page 6 of 9


         v) Real Estate

          Description  - Acquire  necessary  land rights and  permits  including
          coordination  of site selection.  Maintain  existing land rights while
          permitting  licenses  and leases to  minimize  investment  or costs of
          holding property.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          and 3) total assets

         w)  Stores

          Description  -  Provide  clerical,  stenographic,  administrative  and
          Electronic  Data  systems  support.  Provide  engineering  support and
          manage and direct stores operations.

          Expected Allocation Factors - 1) composite*

         x)  Tax

          Description  - Research and consult on tax issues in  connection  with
          federal,   state  and  local  tax  compliance  and  planning  matters,
          including the preparation and filing of returns.

          Expected  Allocation Factors - 1) composite*;  2) current tax expense;
          3) total capitalization; and 4) total assets

         y)  Treasurer's

          Description - Provide treasury operation, mailing, financial planning,
          investments, and executive payroll and pension disbursement services.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; 4) total
         capitalization; and 5) total assets



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
         Sales (kwh and dekatherm)
         Number of customers
         Number of employees


<PAGE>

                                                                     Schedule 1
                                                                    Page 7 of 9


Allocation Factors

The following allocation factors will be utilized as outlined above.

Number of Customers - Based on the number of customers  (electric and/or gas) at
the end of the most  recent  calendar  year.  The  numerator  of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Sales - Based on the sales  volume (kwh and/or  dekatherms)  for the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

Number  of  Employees  - Based  on the  number  of  employees  (contract  and/or
non-contract, or electric operating and/or gas operating) at the end of the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Composite  - Based on an equal  weighting  Sales  (kwh &  dekatherm),  Number of
Customers  (total),  and Number of Employees  (total)  allocation  factors.  The
numerator  of which is the simple  average  of the above  three  factors  for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be  determined  annually  and/or at such time as may be required
due to a significant change in circumstances.

Operations & Maintenance  Labor - Based on the  Operations &  Maintenance  Labor
(electric  and/or gas) for the most recent calendar year. The numerator of which
is for an Operating  Company or an affected  affiliate  and the  denominator  of
which is for all Operating  Companies  and affected  affiliate  companies.  This
ratio will be determined annually, and/or at such time as may be required due to
a significant change in circumstances.

Revenues - Based on revenues  (electric and/or gas) for the most recent calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate  company.  The  denominator  of which is for all  Operating  Companies
and/or affected affiliate companies.  This ratio will be determined annually, or
at such time as may be required due to a significant change in circumstances.

Total Capitalization - Based on total capitalization (total common


<PAGE>

                                                                     Schedule 1
                                                                    Page 8 of 9


stockholder's  equity,  preferred  stock,  and long term debt) at the end of the
most recent calendar year. The numerator of which is for an Operating Company or
an affected  affiliate  company.  The  denominator of which is for all Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Total  Assets - Based on total  assets  at the end of the most  recent  calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate company.  The denominator of which is for all Operating  Companies and
affected affiliate companies.  This ratio will be determined annually, and/or at
such time as may be required due to a significant change in circumstances.

Construction  Expenditures  - Based on  construction  expenditures  for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Peak Load  (electric)  - Based on the  highest  monthly  maximum  megawatt  load
(60-minute  integration)  for the most recent  calendar  year.  The numerator of
which  is for an  Operating  Company  and the  denominator  of  which is for all
Operating Companies. This ratio will be determined annually, and/or at such time
as may be required due to a significant change in circumstances.

Peak Load  (gas) - Based on the  highest  daily  send out in  therms  (excluding
transportation) for the most recent calendar year. The numerator of which is for
an  Operating  Company  and  the  denominator  of  which  is for  all  Operating
Companies. This ratio will be determined annually, and/or at such time as may be
required due to a significant change in circumstances.

Generating Capacity  (nameplate) - Based on installed capacity nameplate ratings
at the end of the most recent  calendar  year.  The numerator of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Gas   Throughput  -  Based  on  gas   throughput   in   dekatherms   (sales  and
transportation) for the most recent calendar year. The numerator of which is for
an Operating Company.  The denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

CPU Cycles - Based on cpu cycles (by application) for the most


<PAGE>

                                                                     Schedule 1
                                                                    Page 9 of 9


recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Current  Tax  Expense - Based on taxes  charged  (income and other) for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Number of  Vehicles - Based on number of  vehicles at the end of the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

In  addition  to  the  allocation  factors  listed  above,   appropriate  direct
allocations  will be made for  costs  benefiting  a single  affiliate.  Indirect
allocations  will  also  be  made  to all  affiliates,  including  non-regulated
companies and Ameren Corporation.

It may be  necessary  to  allocate a  percentage  of total  costs  allocated  to
non-regulated  companies or Ameren Corporation (see below). This will be done as
a  sub-factor  of  existing  allocation  factors.  For  example,   allocating  a
percentage of customer service costs to  non-regulated  companies and allocating
remaining costs based on number of customers.  Also,  allocating a percentage of
video presentation  costs to Ameren  Corporation and allocating  remaining costs
based on capitalization.

Non-Regulated - Based on a percentage of total costs allocated to  non-regulated
companies when existing  allocation  methods do not adequately reflect the level
of services or benefits  received.  After  allocating  this  percentage of total
costs to non-regulatory company, the remaining costs will be allocated to Ameren
Corporation  and/or  its  subsidiaries,  as  appropriate,  based upon one of the
factors above.

Corporate - Based on a percentage of total costs allocated to Ameren Corporation
(AMC) when existing  allocation  methods do not adequately  reflect the level of
services or benefits  received.  After allocating this percentage of total costs
to AMC,  the  remaining  costs will be  allocated  based upon one of the factors
above.


<PAGE>

                                                                Schedule 2
                                                                Page 1 of 1



                                 AMEREN SERVICES
                     EXPECTED ALLOCATED DIRECT COST FACTORS



      ALLOCATION NUMBER          DESCRIPTION

                  001A           Composite*
                  002A           Number of customers
                  002B           Number of gas transportation customers
                  002C           Number of electric customers
                  002D           Number of gas customers
                  002E           % to unregulated company/number of customers
                  003A           Sales (kwh and dekatherm)
                  003B           Kwh sales
                  003C           Dekatherm sales
                  004A           Number of employees
                  004B           Number of contract employees
                  004C           Number of non-contract employees
                  004D           Number of AMS & UEC employees
                  005A           O&M labor
                  006A           Total revenues
                  006B           Electric revenues
                  006C           Gas revenues
                  007A           Total capitalization
                  007B           % to Ameren Corporation/total capitalization
                  008A           Total assets
                  009A           Construction expenditures
                  010A           Peak load (electric)
                  010B           Peak load (gas)
                  011A           Generating capacity
                  012A           Gas throughput (includes transportation)
                  013A           CPU cycles - mainframe
                  013B           CPU cycles - UNIX
                  015A           Current tax expense
                  016A           Number of vehicles



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
                  Sales (kwh and dekatherm)
                  Number of customers
                  Number of employees


<PAGE>

                                                                      Appendix E


                                AGENCY AGREEMENT
                                     BETWEEN
                               AMEREN ENERGY, INC.
                                       And
                             AMEREN SERVICES COMPANY
                                  As Agent for
                     CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
                                       And
                             UNION ELECTRIC COMPANY


     THIS AGENCY AGREEMENT,  made and entered into as of October 30, 1998 by and
between AMEREN ENERGY, INC., a corporation organized under the laws of the State
of Missouri  ("Ameren  Energy"),  and AMEREN  SERVICES  COMPANY,  a  corporation
organized  under the laws of the State of Missouri  ("Client  Company")  (Ameren
Energy and Client Company  hereinafter  sometimes  referred to individually as a
"Party" and collectively as the "Parties"),

                              W I T N E S S E T H:

     WHEREAS,  Ameren Energy and Client Company are both direct  subsidiaries of
Ameren  Corporation  ("Ameren"),  a registered  holding company under the Public
Utility Holding  Company Act of 1935,  and,  together with Ameren's other direct
and indirect subsidiaries, form the Ameren System; and

     WHEREAS,  Ameren Energy is engaged in the business of electricity,  gas and
energy commodity  marketing and trading,  and in the conduct of its business has
assembled  a   highly-trained   staff  and   developed   and  acquired   various
capabilities, programs, systems and other resources; and

     WHEREAS,  Client  Company  is  authorized  by order of the  Securities  and
Exchange


<PAGE>

                                       2

Commission  (the  "Commission")  dated December 30, 1997 (the "Merger Order") to
provide a variety  of  administrative,  management,  engineering,  construction,
environmental,  energy and fuel  supply and support  services  to its  associate
companies  in the  Ameren  System,  and has  heretofore  entered  into a General
Service Agreement,  dated as of January 1, 1998 (the "GSA"), with Union Electric
Company and Central Illinois Public Service Company (the "Operating  Companies")
and certain other associate companies of Client; and

     WHEREAS,  pursuant  to the GSA,  Client  Company  provides  services to the
Operating  Companies in the areas of bulk power marketing and  procurement,  gas
supply, procurement and management, and other services relating to the Operating
Companies' power and gas marketing and trading functions; and

     WHEREAS,   economies  and  increased  efficiencies  will  result  from  the
performance by Ameren Energy of certain support services for Client Company that
would  enable  Client  Company to perform  its  obligations  under the GSA;  and
WHEREAS,  subject to the terms and conditions  herein  described,  Ameren Energy
will render such services and provide such  resources to Client Company at cost,
determined in accordance  with applicable  rules,  regulations and orders of the
Commission; 

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements herein, the Parties hereto hereby agree as follows:

<PAGE>

                                       3


        1.       Agreement to Furnish Support Services.

     Ameren Energy agrees to provide to Client  Company the following  services:
power  trading  and  marketing;   capacity   management;   business   reporting;
transaction   administration;   contract   and   counter-party   administration;
regulatory reporting, support and compliance; representation on industry groups;
the negotiation, execution and administration of contracts between any operating
company and third parties  necessary to facilitate the above;  and other related
activities as requested.

         2.       Appointment of Ameren Energy as Agent.

     Ameren  Energy's  relationship to Client Company shall be that of an Agent.
Ameren  Energy  shall have no  interest  in the  profits or  revenues  of Client
Company or any Operating  Company in respect of any  transaction in which Ameren
Energy provides  services,  and shall not be liable for the performance or other
obligations of Client Company or any Operating Company thereunder. Ameren Energy
shall be  accountable  for all funds  advanced or  collected on behalf of Client
Company or any Operating  Company in connection  with any transaction in respect
of which Ameren Energy  provides  services.  The provision of services by Ameren
Energy  pursuant  to this  Agreement  shall  in all  cases  and  notwithstanding
anything  herein  contained  to the  contrary  be  subject  to  any  limitations
contained  in  authorizations,   rules  or  regulations  of  those  governmental
agencies,  if any, having  jurisdiction  over Ameren Energy or such provision of
services.

<PAGE>

                                       4


         3.       Compensation of Ameren Energy.

     As  compensation  for services  actually  requested  by Client  Company and
rendered to it by Ameren  Energy,  Client  Company  hereby  agrees to  reimburse
Ameren  Energy  for all costs  properly  chargeable  or  allocable  thereto,  as
controlled through a work order procedure.

         4.       Indemnification.

     A. Client  Company  shall and does hereby agree to save harmless and defend
Ameren Energy, and its officers,  employees, and agents, from the payment of any
sum or sums of money on account of, or resulting  from,  claims or suits growing
out of or losses under any  transaction  in respect of which Ameren Energy shall
agree to provide  services,  except to the  extent  that such  claims,  suits or
losses result from the gross negligence or willful  misconduct of Ameren Energy.
Further,  Client  Company  shall  and does  hereby  indemnify  and agree to save
harmless  and defend  Ameren  Energy  (a) from any and all liens,  garnishments,
attachments, claims, suits, costs, attorneys' fees, cost of investigation and of
defense  resulting  from,  incurred in connection  with, or relating to any such
claims,  (b) from the payment of any such sum or sums of money, and (c) from the
payment of any  penalties,  fines,  damages,  suits or claims  (and any liens or
attachments  asserted  in  connection  therewith)  arising out of any alleged or
actual violation of law, court order, or governmental  agency rule or regulation
committed  by or  existing  with  respect  to Client  Company  or its  officers,
employees,  agents or subcontractors (including Ameren Energy when such payments
relate to performing services hereunder).

     B. Ameren  Energy  shall  within five (5)  business  days after it receives
notice

                                       5

<PAGE>

of any claims,  action,  damages or liability against which it will expect to be
indemnified  pursuant  to Article  4A,  notify  Client  Company of such  claims,
actions,  damages or  liabilities.  Thereafter,  Client  Company  may at its own
expense,  upon notice to Ameren Energy,  defend or participate in the defense of
such action or claim or any  negotiation for settlement of such action or claim,
provided that,  unless Client Company proceeds promptly and in good faith to pay
or defend such action or claim, then Ameren Energy shall have the right (but not
the obligation), in good faith, upon ten (10) days' notice to Client Company, to
pay,  settle,  compromise  or proceed to defend any such action or claim without
the further participation by Client Company. Client Company will immediately pay
(or reimburse  Ameren  Energy,  as the case may be) any  payments,  settlements,
compromises,  judgments,  costs or expenses made or incurred by Ameren Energy in
or resulting from the pursuit by Ameren Energy of such right. If any judgment is
rendered  against Ameren Energy in any such action defended by Client Company or
Ameren Energy is otherwise entitled to  indemnification  under Article 4A, or if
any lien attaches to the assets of Ameren Energy in connection therewith, Client
Company shall immediately upon such entry or attachment pay the judgment in full
or discharge any such lien unless, at its expense and direction, appeal shall be
taken under which the execution of the judgment or  satisfaction  of the lien is
stayed. If and when a final and unappealable judgment is rendered against Ameren
Energy in any such action,  Client Company shall  forthwith pay such judgment or
discharge  such lien prior to the time that Ameren  Energy would be legally held
to do so.

<PAGE>

                                       6


         6.       Miscellaneous.

     This  Agreement  shall be binding  upon the  successors  and assigns of the
Parties  hereto,  provided that Ameren Energy shall not be entitled to assign or
subcontract  out any of its obligations  under this Agreement  without the prior
written  approval  of Client  Company.  This  Agreement  may not be  modified or
amended in any respect except in writing  executed by the Parties  hereto.  This
Agreement  shall be construed and enforced under and in accordance with the laws
of the State of Missouri.  This Agreement may be executed in counterparts,  each
one of which when fully executed shall be deemed to have the same dignity, force
and effect as if the original.  No provision of this  Agreement  shall be deemed
waived nor breach of this  Agreement  consented to unless such waiver or consent
is set forth in writing and executed by the Party  hereto  making such waiver or
consent.

     IN WITNESS  WHEREOF,  the Parties  hereto have caused this  Agreement to be
executed by their duly authorized  representatives  as of the day and year first
above written.

                                    AMEREN ENERGY, INC.


                                    _____________________________
                                    By:__________________________
                                    Title:_________________________

                                    Date Executed:________________


<PAGE>


                                       7



                  AMEREN SERVICES COMPANY
                  As Agent For
                  CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
                  UNION ELECTRIC COMPANY



                  ________________________________
                  By:_____________________________
                  Title:___________________________

                  Date Executed:___________________

                  Acknowledged by:
                  CENTRAL ILLINOIS PUBLIC SERVICE COMPANY
 

                  ________________________________
                  By:_____________________________
                  Title:___________________________

                  Date Executed:___________________

                  Acknowledged by:
                  UNION ELECTRIC COMPANY


                  _________________________________
                  By:______________________________
                  Title:____________________________

                  Date Executed:____________________



<PAGE>


Appendix F 
 



                               SERVICES AGREEMENT
                                     Between
                             AMEREN SERVICES COMPANY
                                       and
                              ELECTRIC ENERGY, INC.

     THIS  AGREEMENT,  made and entered into this 1st day of July,  1998, by and
between the following Parties:  AMEREN SERVICES COMPANY  (hereinafter  sometimes
referred to as "Service Company"), a Missouri corporation;  and ELECTRIC ENERGY,
INC.  ("Electric  Energy"),  an  Illinois  Corporation   (hereinafter  sometimes
referred to collectively as "Client Companies");

                                   WITNESSETH:

     WHEREAS,  Client Companies,  desire to enter into this agreement  providing
for the  performance  by Service  Company  for the Client  Companies  of certain
services more particularly set forth herein; and

     WHEREAS,  Service Company is organized,  staffed and equipped and has filed
with the  Securities  and  Exchange  Commission  ("the SEC") to be a  subsidiary
service company under Section 13 of the Public Utilities  Holding Company Act of
1935 (the  "Act") to render to Ameren  Corporation,  and other  subsidiaries  of
Ameren Corporation, certain services as herein provided; and

     WHEREAS, to maximize efficiency, and to achieve merger related savings, the
Client  Companies  desire to avail  themselves  of the  advisory,  professional,
technical  and other  services of persons  employed or to be retained by Service
Company, and to

<PAGE>


compensate Service Company appropriately for such services,

     NOW,  THEREFORE,  in  consideration  of the  premises  and  of  the  mutual
agreements herein, the parties hereto agree as follows:

Section 1. Agreement to Furnish Services

     Service   Company   agrees  to  furnish  to  Client   Companies  and  their
subsidiaries,  if any,  upon the  terms  and  conditions  herein  provided,  the
services  hereinafter referred to and described in Section 2, at such times, for
such  period  and in such  manner  as  Client  Companies  may from  time to time
request.  Service  Company  will keep  itself and its  personnel  available  and
competent  to  render  to  Client  Companies  such  services  so  long  as it is
authorized so to do by the appropriate federal and state regulatory agencies.

Section 2.  Services to be Performed

     The services to be provided by Service Company hereunder may, upon request,
include the services as set out in Schedule 1,  attached  hereto and made a part
hereof. A revised Schedule 1 will be provided on an annual basis.

     In addition to the Services set out in Schedule 1,  Service  Company  shall
render advice and  assistance  in  connection  with such other matters as Client
Companies may request and Service Company  determines it is able to perform with
respect to Client Companies' business and operations.

Section 3.  Compensation of Service Company

     As compensation for such services rendered to it by Service Company, Client
Companies hereby agree to pay to Service Company

                                      -2-

<PAGE>

the cost of such  services,  computed in accordance  with  applicable  rules and
regulations  (including,  but not limited to, Rules 90 and 91) under the Act and
appropriate accounting standards.

     Compensation  to be paid by Client  Companies  shall include direct charges
and  Client  Companies'  fairly  allocated  pro rata share of certain of Service
Company's costs, determined as set out on Schedule 2, attached hereto and made a
part hereof.

Section 4.  Securities and Exchange Commission Rules

     It is the intent of the Parties that the determination of the costs as used
in this Agreement shall be consistent with, and in compliance with the rules and
regulations  of the SEC,  as they now read or  hereafter  may be modified by the
Commission.

Section 5.  Service Requests

     Services will be performed in  accordance  with a Service  Request  system,
consisting  of work orders  established  to capture  the various  types of costs
incurred by Service  Company.  Costs will be charged to the appropriate  service
requests,  which  will  then be the  basis  for the  billing  of costs to Client
Companies.

Section 6.  Payment

     Payment  shall be by making  remittance  of the amount  billed or by making
appropriate accounting entries on the books of the companies.

     Payment  shall be  accomplished  on a  monthly  basis,  and  remittance  or
accounting entries shall be completed within 60 days of billing.

                                      -3-

<PAGE>


Section 7.  Ameren Corporation

     Except as authorized by rule,  regulation,  or order of the  Securities and
Exchange  Commission,  nothing in this Agreement  shall be read to permit Ameren
Corporation,  or any person  employed  by or acting for Ameren  Corporation,  to
provide  services  for other  Parties,  or any  companies  associated  with said
Parties.

Section 8.  Client Companies

     Except as limited by Section 7, nothing in this Agreement  shall be read to
prohibit Client Companies or their  subsidiaries from furnishing to other Ameren
system  companies or their  subsidiaries  services herein referred to, under the
same conditions and terms as set out for Service Company.

Section 9.  Effective Date and Termination

     This  Agreement  shall  remain  in  effect  from the date  executed  unless
terminated  by mutual  agreement  or by any Party  giving at least  sixty  days'
written notice to the other Parties prior to the beginning of any calendar year,
each Party fully reserving the right to so terminate the Agreement.

     This  Agreement may also be terminated to the extent that  performance  may
conflict  with any rule,  regulation  or order of the  Securities  and  Exchange
Commission adopted before or after the making of this Agreement.

Section 10.  Assignment

     This  Agreement and the rights  hereunder  may not be assigned  without the
mutual written consent of all Parties hereto.

                                      -4-

<PAGE>


    IN WITNESS  WHEREOF,  the Parties  hereto have caused this  Agreement to be
executed and attested by their authorized  officers as of the day and year first
above written.

                                           AMEREN SERVICES COMPANY

                                           By ______________________________

                                           Title ___________________________
ATTEST:

By ______________________

Title ___________________

                                           ELECTRIC ENERGY, INC.

                                           By ______________________________

                                           Title ___________________________
ATTEST:

By ______________________

Title ___________________


                                      -5-

<PAGE>


                                                                    Schedule 1
                                                                   Page 1 of 9






                        DESCRIPTION OF EXPECTED SERVICES
                      TO BE PROVIDED BY AMEREN SERVICES AND
                     EXPECTED DIRECT COST ALLOCATION FACTORS


Description of Expected Services to be Provided

A  description  of the  expected  services to be provided by Ameren  Services is
detailed  below.  Identifiable  costs  for all of the  functional  organizations
listed  below  will  be  directly   charged  to  Ameren   Corporation   and  its
subsidiaries, whenever possible.

For costs that cannot be directly  assigned or distributed,  the expected direct
cost allocation factors are reflected below for each Ameren Services department.

         a)  Building Service

          Description  -  Provide  facility  management  services  for owned and
          leased facilities,  excluding power plants. To the extent that leasing
          arrangements  are  established  between Ameren  Services and/or Ameren
          Corporation  and its  subsidiaries,  lease costs will include rent for
          space  occupied  and  applicable  services,   such  as  operation  and
          maintenance  of  structures,  capital  improvements,   interior  space
          planning, security and janitorial. As appropriate, lease costs will be
          allocated  based on square feet  occupied and the  allocation  factors
          listed below.

          Expected  Allocation  Factors - 1) number of employees;  2) operations
          and maintenance labor; 3) total capitalization; and 4) total assets

         b)  Controller's

          Description - Perform all  accounting  services  necessary to properly
          maintain  and  report  on the  books and  records  of  Ameren  and its
          subsidiaries. Provide investor relations services.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         c)  Corporate Communications

          Description  -  Develop   strategies  for  advertising  and  marketing
          efforts, develop employee communication programs, coordinate community
          relations  efforts  and  develop  policies  and  procedures  for media
          relations.


<PAGE>

                                                                     Schedule 1
                                                                    Page 2 of 9

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         d)  Corporate Planning

          Description  -  Provide  rate  engineering,   interchange   marketing,
          resource planning and business analysis services.

          Expected  Allocation  Factors - 1) composite*;  2) kwh sales;  3) peak
          load [electric]; 4) total capitalization; and 5) total assets

         e) Customer Services/Division Support

          Description - Answer  customer  inquiries  pertaining to  electric/gas
          service usage and perform credit activities. Provide technical support
          relating to planning,  engineering,  constructing  and  operating  the
          distribution and transmission  systems.  Provide technical support and
          maintenance of protective  relay schemes,  station meter work,  system
          testing and data acquisition systems.

          Expected  Allocation  Factors - 1) number of  customers;  2) number of
          employees; and 3) operations and maintenance labor

         f)  Economic Development

          Description - Provide community and business development  services, as
          well as  natural  gas  development  services.  Analyze  community  and
          business development opportunities.

          Expected  Allocation  Factors - 1) number of customers;  2) sales [kwh
          and dekatherm]; 3) total capitalization; and 4) total assets

         g)  Energy Supply

          Coordinate the use of the generating, transmission and interconnection
          facilities to provide economical and reliable energy.

          Expected Allocation Factors - 1) kwh sales


<PAGE>

                                                                     Schedule 1
                                                                    Page 3 of 9



        h)  Engineering and Construction

          Description - Provide  professional  services  related to  engineering
          studies,  design,  procurement,  planning,  building and management of
          projects.  Study  technology  that  may  reduce  costs  of  producing,
          delivering and using electricity.

          Expected  Allocation Factors - 1) peak load [electric];  2) generating
          capacity; and 3) construction expenditures

         i)  Environmental Services & Safety

          Description  -  Perform   analysis  and  advocacy  of  regulatory  and
          legislative  issues in the areas of  environment,  health and  safety.
          Communicate final regulatory requirements to operating groups. Provide
          assistance  and  support  and  compliance   review  in  meeting  those
          requirements.  Oversee  hazardous  substance  site  investigation  and
          remediation activities.

          Expected  Allocation  Factors - 1) number of employees;  2) generating
          capacity;  3) operations and  maintenance  labor;  and 4) construction
          expenditures

         j)  Executive

          Description - Provide  executive  management duties for all applicable
          activities at the department, function and officer levels.

          Expected  Allocation  Factors  - 1)  total  capitalization;  2)  total
          assets; and 3) sales [kwh and dekatherm]

         k)  Fossil Fuel Procurement

          Description  - Provide  resources  necessary  to procure  fuel for the
          fossil power plants and minimize production costs.

          Expected Allocation Factors - 1) kwh sales

         l)  Gas Supply

          Description - Provide gas supply and pipeline capacity procurement and
          management services. Develop policies,  procedures and standards which
          govern the design, construction and operation of the gas systems.


<PAGE>

                                                                     Schedule 1
                                                                    Page 4 of 9


          Expected  Allocation  Factors - 1) dekatherm  sales; 2) gas throughput
          [includes transportation]; and 3) peak load [gas]

         m)  General Counsel

          Description - Provide  general legal advice  related to all applicable
          activities and legal  services in regards to  legislative  activities,
          regulatory  agencies and security  matters.  Make regulatory  filings,
          maintain  minutes  of the  board  of  directors,  conduct  stockholder
          meetings and procure property and casualty insurance bonds.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         n)  Human Resources

          Description - Administer  and negotiate  employee  benefits  including
          pensions, major medical, long-term disability, life insurance, defined
          contribution  plans,  executive  benefit and flexible  spending plans.
          Provide employment  services,  including required regulatory reporting
          and maintenance of personnel  records.  Provide employee  training and
          communications services.

          Expected  Allocation  Factors  - 1)  number  of  employees;  2)  total
          capitalization;  3) total  assets;  and 4) operation  and  maintenance
          labor

         o)  Industrial Relations

          Description - Negotiate,  represent and administer provisions of labor
          agreements applicable to unions representing union employees.

          Expected Allocation Factors - 1) number of employees; and 2) operation
          and maintenance labor

         p)  Information Services

          Description  - Provide for the  development  and operation of computer
          software,  telecommunications  and  other  equipment  used to  conduct
          business and engineering activities.  Maintain all billing records and
          process customer meter readings.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; 4)CPU cycles; and 5) operation and maintenance
          labor


<PAGE>

                                                                     Schedule 1
                                                                    Page 5 of 9


         q)  Internal Audit

          Description  -  Audit  company  operations,  perform  operational  and
          productivity  reviews,  review justifications for capital projects and
          perform quality assurance reviews.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; and 4)
         operation and maintenance labor

         r)  Marketing

          Description - Provide marketing services including account management,
          program development, market research and customer energy services.

          Expected  Allocation  Factors - 1) sales [kwh and  dekatherm];  and 2)
          total assets

         s)  Merger Coordination

          Description - Monitor  programs to achieve  savings,  merger costs and
          position reductions as they relate to the implementation plans.

          Expected Allocation Factors - 1) composite*;  2) total capitalization;
          and 3) total assets

         t)  Motor Transportation

          Description - Provide  engineering,  support, and mechanical servicing
          of vehicles, procurement of vehicles and safety and training programs.

          Expected Allocation Factors - 1) number of vehicles

         u)  Purchasing

          Description  - Provide  procurement  of goods and services  other than
          fuel. Provide materials inventory management services.

          Expected  Allocation Factors - 1) composite*;  2) total assets; and 3)
          construction expenditures


<PAGE>

                                                                     Schedule 1
                                                                    Page 6 of 9


         v) Real Estate

          Description  - Acquire  necessary  land rights and  permits  including
          coordination  of site selection.  Maintain  existing land rights while
          permitting  licenses  and leases to  minimize  investment  or costs of
          holding property.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          and 3) total assets

         w)  Stores

          Description  -  Provide  clerical,  stenographic,  administrative  and
          Electronic  Data  systems  support.  Provide  engineering  support and
          manage and direct stores operations.

          Expected Allocation Factors - 1) composite*

         x)  Tax

          Description  - Research and consult on tax issues in  connection  with
          federal,   state  and  local  tax  compliance  and  planning  matters,
          including the preparation and filing of returns.

          Expected  Allocation Factors - 1) composite*;  2) current tax expense;
          3) total capitalization; and 4) total assets

         y)  Treasurer's

          Description - Provide treasury operation, mailing, financial planning,
          investments, and executive payroll and pension disbursement services.

          Expected  Allocation Factors - 1) composite*;  2) number of customers;
          3) number of employees; 4) total capitalization; and 5) total assets



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor):
         Sales (kwh and dekatherm)
         Number of customers
         Number of employees


<PAGE>

                                                                     Schedule 1
                                                                    Page 7 of 9



Allocation Factors

The following allocation factors will be utilized as outlined above.

Number of Customers - Based on the number of customers  (electric and/or gas) at
the end of the most  recent  calendar  year.  The  numerator  of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Sales - Based on the sales  volume (kwh and/or  dekatherms)  for the most recent
calendar  year.  The  numerator  ofwhich  is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

Number  of  Employees  - Based  on the  number  of  employees  (contract  and/or
non-contract, or electric operating and/or gas operating) at the end of the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Composite  - Based on an equal  weighting  Sales  (kwh &  dekatherm),  Number of
Customers  (total),  and Number of Employees  (total)  allocation  factors.  The
numerator  of which is the simple  average  of the above  three  factors  for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be  determined  annually  and/or at such time as may be required
due to a significant change in circumstances.

Operations & Maintenance  Labor - Based on the  Operations &  Maintenance  Labor
(electric  and/or gas) for the most recent calendar year. The numerator of which
is for an Operating Company or an affected affiliate and thedenominator of which
is for all Operating Companies and affected affiliate companies. This ratio will
be  determined  annually,  and/or  at  such  time  as may be  required  due to a
significant change in circumstances.

Revenues - Based on revenues  (electric and/or gas) for the most recent calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate  company.  The  denominator  of which is for all  Operating  Companies
and/or affected affiliate companies.  This ratio will be determined annually, or
at such time as may be required due to a significant change in circumstances.

Total Capitalization - Based on total capitalization (total common


<PAGE>

                                                                     Schedule 1
                                                                    Page 8 of 9


stockholder's  equity,  preferred  stock,  and long term debt) at the end of the
most recent calendar year. The numerator of which is for an Operating Company or
an affected  affiliate  company.  The  denominator of which is for all Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Total  Assets - Based on total  assets  at the end of the most  recent  calendar
year.  The  numerator  of  which  is for an  Operating  Company  or an  affected
affiliate company.  The denominator of which is for all Operating  Companies and
affected affiliate companies.  This ratio will be determined annually, and/or at
such time as may be required due to a significant change in circumstances.

Construction  Expenditures  - Based on  construction  expenditures  for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Peak Load  (electric)  - Based on the  highest  monthly  maximum  megawatt  load
(60-minute  integration)  for the most recent  calendar  year.  The numerator of
which  is for an  Operating  Company  and the  denominator  of  which is for all
Operating Companies. This ratio will be determined annually, and/or at such time
as may be required due to a significant change in circumstances.

Peak Load  (gas) - Based on the  highest  daily  send out in  therms  (excluding
transportation) for the most recent calendar year. The numerator of which is for
an  Operating  Company  and  the  denominator  of  which  is for  all  Operating
Companies. This ratio will be determined annually, and/or at such time as may be
required due to a significant change in circumstances.

Generating Capacity  (nameplate) - Based on installed capacity nameplate ratings
at the end of the most recent  calendar  year.  The numerator of which is for an
Operating  Company and the denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

Gas   Throughput  -  Based  on  gas   throughput   in   dekatherms   (sales  and
transportation) for the most recent calendar year. The numerator of which is for
an Operating Company.  The denominator of which is for all Operating  Companies.
This ratio will be determined  annually,  and/or at such time as may be required
due to a significant change in circumstances.

CPU Cycles - Based on cpu cycles (by application) for the most


<PAGE>

                                                                     Schedule 1
                                                                    Page 9 of 9


recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Current  Tax  Expense - Based on taxes  charged  (income and other) for the most
recent  calendar year. The numerator of which is for an Operating  Company or an
affected  affiliate  company.  The  denominator  of which  is for all  Operating
Companies  and  affected  affiliate  companies.  This ratio  will be  determined
annually,  and/or at such time as may be required due to a significant change in
circumstances.

Number of  Vehicles - Based on number of  vehicles at the end of the most recent
calendar  year.  The  numerator  of which is for an  Operating  Company  and the
denominator  of  which  is for  all  Operating  Companies.  This  ratio  will be
determined annually, and/or at such time as may be required due to a significant
change in circumstances.

In  addition  to  the  allocation  factors  listed  above,   appropriate  direct
allocations  will be made for  costs  benefiting  a single  affiliate.  Indirect
allocations  will  also  be  made  to all  affiliates,  including  non-regulated
companies and Ameren Corporation.

It may be  necessary  to  allocate a  percentage  of total  costs  allocated  to
non-regulated  companies or Ameren Corporation (see below). This will be done as
a  sub-factor  of  existing  allocation  factors.  For  example,   allocating  a
percentage of customer service costs to  non-regulated  companies and allocating
remaining costs based on number of customers.  Also,  allocating a percentage of
video presentation  costs to Ameren  Corporation and allocating  remaining costs
based on capitalization.

Non-Regulated - Based on a percentage of total costs allocated to  non-regulated
companies when existing  allocation  methods do not adequately reflect the level
of services or benefits  received.  After  allocating  this  percentage of total
costs to non-regulatory company, the remaining costs will be allocated to Ameren
Corporation  and/or  its  subsidiaries,  as  appropriate,  based upon one of the
factors above.

Corporate - Based on a percentage of total costs allocated to Ameren Corporation
(AMC) when existing  allocation  methods do not adequately  reflect the level of
services or benefits  received.  After allocating this percentage of total costs
to AMC,  the  remaining  costs will be  allocated  based upon one of the factors
above.

<PAGE>


                                                                  Schedule 2
                                                                  Page 1 of 1



                                 AMEREN SERVICES
                     EXPECTED ALLOCATED DIRECT COST FACTORS



      ALLOCATION NUMBER           DESCRIPTION

                  001A            Composite*
                  002A            Number of customers
                  002B            Number of gas transportation customers
                  002C            Number of electric customers
                  002D            Number of gas customers
                  002E            % to unregulated company/number of customers
                  003A            Sales (kwh and dekatherm)
                  003B            Kwh sales
                  003C            Dekatherm sales
                  004A            Number of employees
                  004B            Number of contract employees
                  004C            Number of non-contract employees
                  004D            Number of AMS & UEC employees
                  005A            O&M labor
                  006A            Total revenues
                  006B            Electric revenues
                  006C            Gas revenues
                  007A            Total capitalization
                  007B            % to Ameren Corporation/total capitalization
                  008A            Total assets
                  009A            Construction expenditures
                  010A            Peak load (electric)
                  010B            Peak load (gas)
                  011A            Generating capacity
                  012A            Gas throughput (includes transportation)
                  013A            CPU cycles - mainframe
                  013B            CPU cycles - UNIX
                  015A            Current tax expense
                  016A            Number of vehicles



*Composite  consists  of  the  following  three  factors  (equal  weight to each
factor): 
                  Sales (kwh and dekatherm)
                  Number of customers
                  Number of employees



<PAGE>


                                                                     Appendix G


Financial Statements under Item 10 (filed herewith on Form SE)



                                                                      Exhibit D



                               AMEREN CORPORATION
                         AND ITS AFFILIATED CORPORATIONS

                            TAX ALLOCATION AGREEMENT

     This  agreement  is made as of  ______________,  19__ by and  among  Ameren
Corporation,   a  registered   public   utility   holding  and  its   affiliated
corporations,  as  identified  in Exhibit A hereto  (collectively,  the "Group";
individually, "member of the Group").

     WHEREAS,  the members of the Group are affiliated  corporations  within the
meaning of section 1504 of the Internal  Revenue Code of 1986,  as amended,  and
will join in the annual filing of a consolidated federal income tax return;

     WHEREAS,  the  members of the Group  intend to  allocate  the  consolidated
income tax  liabilities  and  benefits to each member of the Group in a fair and
equitable manner; and

     WHEREAS,  the members of the Group intend to allocate the  liabilities  and
benefits  arising  from the Group's  annual  consolidated  income tax returns in
compliance with Title 17, section 250.45(c) of the Code of Federal  Regulations,
section   1552(a)(1)  of  the  Internal  Revenue  Code  and  Title  26,  section
1.1502-33(d)(2) of the Code of Federal Regulations;

         IT IS THEREFORE AGREED, as follows:

         Section 1.        Definitions

         For purposes of this agreement, the following definitions shall apply:

          (a)  "Consolidated tax" shall mean the Group's aggregate tax liability
               for a taxable year as shown on the  consolidated  federal  income
               tax return.

          (b)  "Consolidated refund" shall mean the Group's refund for a taxable
               year as shown on the consolidated federal income tax return.

          (c)  "Corporate taxable income" or "corporate taxable loss" shall mean
               the  income or loss of a member of the Group for a taxable  year,
               computed as though the member had filed a separate federal income
               tax return on the same basis as used in the consolidated  return,
               except that:

               (1)  Dividend  income  from other  members of the Group  shall be
                    disregarded, and

               (2)  Intercompany   transactions   that  are  eliminated  in  the
                    consolidated return shall be given appropriate treatment.

<PAGE>

          (d)  "Separate return tax" shall mean the federal income tax liability
               or  federal  income  tax  refund,  computed  with  respect to the
               corporate  taxable  income  or loss of a member  of the  Group as
               though the member were not a member of the Group. If the separate
               return tax is a liability, it shall be referred to as a "positive
               separate return tax." If the separate return tax is a refund,  it
               shall be referred to as a "negative separate return tax."
 
          (e)  A "positive" allocation shall be the obligation to make a payment
               to the  Group.  A  "negative"  allocation  shall be the  right to
               receive a payment from the Group.

         Section 2.        General Allocation Method

     Each taxable year, the members of the Group shall allocate the consolidated
tax or consolidated refund in accordance with the following procedures:

          (a)  A member,  to  include  Ameren  Corporation,  that  would  have a
               positive separate return tax shall receive a positive  allocation
               in an amount equal to such positive separate return tax.

          (b)  A member,  other  than  Ameren  Corporation,  that  would  have a
               negative separate return tax shall receive a negative  allocation
               in an amount equal to such negative separate return tax.

          (c)  If Ameren  Corporation would have a negative separate return tax,
               then  each  member  having  positive  separate  return  tax shall
               receive a negative allocation in an amount equal to such negative
               separate  return tax  multiplied by the member's share of the sum
               of the positive separate return tax.

         Section 3.        Special Allocation Rules

          (a)  Alternative Minimum Tax. In any year in which alternative minimum
               tax (AMT) is payable by the Group,  the consolidated tax shall be
               separated into two parts: regular tax and AMT.

               (1)  Regular  tax  shall  be  allocated  in  accordance  with the
                    general allocation method set forth in section 2, above.

               (2)  AMT will be  allocated  to each member of the Group based on
                    the proportion of:

                    (A) the excess of its separate company tentative minimum tax
                    over its separate company regular tax liability, to

<PAGE>

                    (B)  the  aggregate  of  the  excesses  of  such  companies'
                    tentative   minimum  tax  amounts  over  their  regular  tax
                    liability amounts.

               (3)  Each  member  whose  regular  tax   liability   exceeds  its
                    tentative  minimum tax on a separate  company basis shall be
                    excluded from this  calculation and shall not be impacted by
                    the Group's AMT liability.

               (4)  The minimum tax credit  shall be allocated to the members of
                    the  Group to which the  associated  AMT was  allocated,  in
                    proportion to the associated AMT allocated to such members.

          (b)  Investment  Tax Credits;  Other Tax  Benefits and Material  Items
               Taxed at Different Rates.  Any investment tax credits,  other tax
               benefits  and  material  items taxed at rates other than the rate
               applicable  to  corporate   taxable  income  shall  be  allocated
               directly to the members of the Group giving rise to them.

         Section 4.        Maximum Allocation

     The tax  apportioned to any member shall not exceed the separate return tax
of such member.

         Section 5.        Payments

     Each member of the Group is responsible for its own tax liability.  Payment
of such liability shall be made in accordance with the following procedure:

          (a)  A member of the Group with a net  positive  allocation  shall pay
               Ameren Corporation the net amount allocated.

          (b)  A  member  of the  Group  with a net  negative  allocation  shall
               receive payment from Ameren  Corporation in the amount of the net
               negative allocation.

          (c)  Ameren  Corporation shall pay to the Internal Revenue Service the
               Group's net current  federal income tax liability from the net of
               the receipts and payments to and from members of the Group.

          (d)  Ameren  Corporation  shall make any calculations on behalf of the
               members of the Group  necessary to comply with the  estimated tax
               provisions  of IRC  section  6655.  Based  on such  calculations,
               Ameren Corporation shall charge the members  appropriate  amounts
               at intervals consistent with the dates in that section.

<PAGE>

          (e)  If the Group has a consolidated  net operating loss ("NOL") for a
               taxable year (the "loss year") and the NOL cannot be used in full
               by being carried back to a prior taxable year, the unused portion
               of the NOL shall be allocated  (as negative  allocations)  to the
               members of the Group  having  negative  allocations  for the loss
               year in  proportion  to the relative  magnitude of such  negative
               allocations  for the loss  year.  Each such  member  shall  carry
               negative  allocation  from the loss year forward to the following
               taxable  year  and  combine  it  with  its  allocation  for  such
               following taxable year.

          (f)  A member shall make any payment  required by this section  within
               60 days  after  receiving  notice  of such  payment  from  Ameren
               Corporation.  Alternatively,  in  the  case  of any  second  tier
               subsidiary  (any company that is  wholly-owned  by Union Electric
               Company,  Central  Illinois  Public  Service  Company,  or CIPSCO
               Investment  Company),  the parent of such second-tier  subsidiary
               may make the  payment  required  by the  preceding  sentence  for
               itself and all of its second-tier  subsidiaries within the 60-day
               period,  with the  second-tier  subsidiaries  to compensate  such
               parent within a reasonable time thereafter.

         Section 6.        Adjustments to Tax Liability Shown on Returns

          (a)  In the event that the consolidated tax or consolidated  refund is
               subsequently  adjusted by the  Internal  Revenue  Service or by a
               court decision,  the consolidated  tax,  consolidated  refund and
               separate return tax shall be adjusted accordingly consistent with
               the methodology set forth previously in this agreement. Any prior
               payments  among the  members of the Group  shall be  adjusted  to
               conform to the change.

          (b)  If any interest is paid or received as a result of an  adjustment
               to consolidated tax or consolidated  refund, it will be allocated
               to the parties in the  proportion  that each  member's  change in
               separate  tax in  each  affected  year  bears  to the  change  in
               consolidated tax or consolidated refund.

          (c)  Any  penalty  shall be paid by the  member of the  Group  that is
               responsible  for the  penalty.  If the  party at fault  cannot be
               determined,  the penalty shall be allocated in the same manner as
               if it were additional tax.

         Section 7.        State Income Taxes

          (a)  Any state income tax liability  (including liability for interest
               or  penalties)  associated  with the filing of a  separate  state
               income tax return by a member of the Group shall be  allocated to
               and paid directly by such member.

          (b)  Any state income tax liability  (including liability for interest
               or penalties) associated with the filing of a unitary or combined
               state  return  shall be  allocated  to the  members  of the Group
               participating  in the returns  following the procedures set forth

<PAGE>

               above for federal income tax liabilities.  Because certain states
               utilize  a unitary  method,  the  Group's  aggregate  income  tax
               liability to a state may exceed the sum of the members'  separate
               return income tax liabilities to the state.  If this occurs,  the
               excess of the Groups aggregate  liability to such state over the
               sum of the members'  separate  return  liabilities for such state
               shall be  allocated  to the  member or members  whose  operations
               caused  the  Group  to be  taxed  by  the  state,  following  the
               procedures  set forth above for federal  income tax  liabilities.
               Conversely,  the sum of the members' separate return  liabilities
               may exceed the Group's  aggregate  liability to a state.  If this
               occurs,  the excess of the sum of the  members'  separate  return
               liabilities for such state over the Group's  aggregate  liability
               to such state shall be allocated  to the member or members  whose
               operations caused the excess,  following the procedures set forth
               above for federal income tax liabilities.


         Section 8.        New Affiliates

     The  members  of the Group  will  cause any  corporation  which  becomes an
affiliated  corporation  within the meaning of IRC section  1504 to join in this
agreement.

<PAGE>

         Section 9.        Amendment

     This agreement may be amended from time to time as the result of changes in
federal or state law or relevant facts and circumstances.

         Section 10.       Cooperation of Members

     Each  member  shall  execute  and file such  consent,  elections  and other
documents  that  may be  required  or  appropriate  for  the  proper  filing  of
consolidated  income  tax  returns  and for  the  allocations  provided  by this
consent.

         *        *        *        *       *        *        *        * 

     The above procedures for allocating the  consolidated  income tax liability
of the Group  have been  agreed to by each of the below  listed  members  of the
Group, as evidenced by the signature of an officer of each member.



Ameren Corporation                  by:      ________________________________
 
Ameren Services Company             by:     ________________________________

Union Electric Company              by:      ________________________________

Union Electric Development
  Corporation                       by:      ________________________________

Central Illinois Public Service
  Company                           by:      ________________________________

CIPSCO Investment Company           by:     ________________________________

Ameren Energy, Inc.                 by:      ________________________________

CIPS Energy Inc.                    by:      ________________________________

Illinois Steam, Inc.                by:      ________________________________

Ameren Development Company          by:     ________________________________

Ameren ERC, Inc.                    by:      ________________________________

Ameren Energy Communications,
   Inc.                             by:      ________________________________



<PAGE>

                                   EXHIBIT A

Ameren Corporation
Ameren Services Company
Union Electric Company
Union Electric Development Corporation
Central Illinois Public Service Company
CIPSCO Investment Company
Ameren Energy, Inc.
CIPS Energy Inc.
Illinois Steam, Inc.
Ameren Development Company
Ameren ERC, Inc.
Ameren Energy Communications, Inc.


<TABLE> <S> <C>

<ARTICLE>                                              OPUR1
<LEGEND>


                         AMEREN CORPORATION CONSOLIDATED
                        PUBLIC UTILITY HOLDING COMPANIES
                                    FORM U5S
                                  ARTICLE OPUR1
                             (Thousands of Dollars)


</LEGEND>
<CURRENCY>                                               USD
       

<S>                                             <C>

<PERIOD-START>                                   JAN-01-1998
<PERIOD-TYPE>                                         12-MOS
<FISCAL-YEAR-END>                                DEC-31-1998
<PERIOD-END>                                     DEC-31-1998
<EXCHANGE-RATE>                                            1
<BOOK-VALUE>                                        PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                          6,928,039
<OTHER-PROPERTY-AND-INVEST>                          248,571
<TOTAL-CURRENT-ASSETS>                               771,160
<TOTAL-DEFERRED-CHARGES>                              78,091
<OTHER-ASSETS>                                       821,578
<TOTAL-ASSETS>                                     8,847,439
<COMMON>                                               1,372
<CAPITAL-SURPLUS-PAID-IN>                          1,582,548
<RETAINED-EARNINGS>                                1,472,200
<TOTAL-COMMON-STOCKHOLDERS-EQ>                     3,056,120
                                      0
                                          235,197
<LONG-TERM-DEBT-NET>                               2,239,794
<SHORT-TERM-NOTES>                                    58,528
<LONG-TERM-NOTES-PAYABLE>                                  0
<COMMERCIAL-PAPER-OBLIGATIONS>                             0
<LONG-TERM-DEBT-CURRENT-PORT>                        184,444
                                  0
<CAPITAL-LEASE-OBLIGATIONS>                           49,630
<LEASES-CURRENT>                                      17,269
<OTHER-ITEMS-CAPITAL-AND-LIAB>                     3,006,457
<TOT-CAPITALIZATION-AND-LIAB>                      8,847,439
<GROSS-OPERATING-REVENUE>                          3,318,208
<INCOME-TAX-EXPENSE>                                 267,673
<OTHER-OPERATING-EXPENSES>                         2,479,314
<TOTAL-OPERATING-EXPENSES>                         2,746,987
<OPERATING-INCOME-LOSS>                              571,221
<OTHER-INCOME-NET>                                     2,392
<INCOME-BEFORE-INTEREST-EXPEN>                       573,613
<TOTAL-INTEREST-EXPENSE>                             174,554
<NET-INCOME>                                         386,497
                           12,562
<EARNINGS-AVAILABLE-FOR-COMM>                        386,497
<COMMON-STOCK-DIVIDENDS>                             348,527
<TOTAL-INTEREST-ON-BONDS>                            152,689
<CASH-FLOW-OPERATIONS>                               803,244
<EPS-PRIMARY>                                           2.82
<EPS-DILUTED>                                           2.82

        


</TABLE>


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