SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


--------------------------------------------------------------------------------
In the Matter of:

AMEREN CORPORATION                                SEMI-ANNUAL CERTIFICATE
UNION ELECTRIC DEVELOPMENT                        PURSUANT TO RULE 24 UNDER THE
  CORPORATION                                     PUBLIC UTILITY HOLDING COMPANY
CIPSCO INVESTMENT COMPANY                         ACT OF 1935

File No.  70-9965

================================================================================

     Ameren  Corporation  ("Ameren"),  a  registered  holding  company,  and its
subsidiaries  named  above,  hereby  file this  certificate  pursuant to Rule 24
reporting on  transactions  authorized by the  Commission by order dated June 4,
2002  (Holding Co. Act Release No.  35-27536).  This  certificate  is filed with
respect to transactions  consummated  during the period  commencing June 4, 2002
and ending December 31, 2002.

     File No. 70-9965:
     ----------------

     a.   The consolidated balance sheet and twelve-month statement of income as
          of the end of the six-month period.

          To be filed confidentially as Exhibits A and B under Rule 104.

     b.   The amount of revenues and any form of  compensation  received  during
          each  six-month  period  ending June 30 or December 31 as  applicable,
          from any and all Tax Credit Projects directly or indirectly owned.

          Neither  Union  Electric  Development  Corporation  ("UEDC") or CIPSCO
          Investment  Company ("CIC")  received any  compensation or revenue for
          the period June 4, 2002 through December 31, 2002.

     c.   The name of each new Tax Credit Project company in which an investment
          was made during the six-month  period and upon staff request a copy of
          the applicable operating agreement.

          UEDC made a  $1,500,000  commitment  to the St. Louis Equity Fund 2003
          LLC.

     d.   The amounts of investment made during each six-month period in the Tax
          Credit  Projects  and  cumulative  comparisons  of  the  $125  million
          authorized in this order.

          Refer to attached Exhibit C.

     e.   The  cumulative  number of any and all Tax  Credit  Projects,  and any
          other investment position in any form of non-utility assets at the end
          of each six-month period.

          Refer to Note 2 to attached Exhibit C.

The  undersigned  registered  holding  company has duly caused this  semi-annual
report to be signed on its  behalf by the  undersigned  officer  thereunto  duly
authorized  pursuant to the  requirements  of the Public Utility Holding Company
Act of 1935.

Ameren Corporation


By     /s/ Jerre E. Birdsong                          Date:    February 13, 2003
  ------------------------------------
           Jerre E. Birdsong
       Vice President and Treasurer



                                                                       EXHIBIT C

Ameren - Equity Tax Credit Investment Summary

         Union Electric Development Corporation (UEDC)
         ---------------------------------------------



                                                                           Equity Invested as of
                                                              12/31/2001         06/03/2002         12/31/2002

         St. Louis Equity Fund:  St. Louis, MO                                                        Note 2
                                                                                    
                       1988 LP                                $  512,047          $  512,047          $  512,047
                       1990 LP                                $  484,325          $  484,325          $  484,325
                       1991 LP                                $  498,931          $  498,931          $  498,931
                       1992 LP                                $  516,461          $  516,461          $  516,461
                       1993 LP                                $  489,812          $  489,812          $  489,812
                       1994 LP                                $  470,066          $  480,547          $  480,547
                       1995 LLC                               $  479,643          $  493,400          $  493,400
                       1996 LLC                               $  429,084          $  518,245          $  518,245
                       1997 LLC                               $  466,716          $  571,945          $  571,945
                       1998 LLC                               $  315,098          $  403,877          $  403,877
                       1999 LLC                               $  258,107          $  436,892          $  436,892
                       2000 LLC                               $  189,862          $  349,811          $  349,811
                       2001 LLC                               $   90,000          $  240,549          $  240,549
                       2002 LLC                                                   $   90,000          $   90,000
                       2003 LLC                                                                       Note 1
         Housing Missouri, Inc: St. Louis, MO
                       1996 LLC                               $  202,768          $  244,862          $  244,862
                       1997 LLC                               $  190,192          $  238,840          $  238,840
                       1998 LLC                               $  149,893          $  195,413          $  195,413
                                                          -------------------------------------------------------
                                            Total UEDC:       $5,743,005          $6,765,957          $6,765,957






         CIPSCO IVESTMENT COMPANY (CIC)
         ------------------------------

         Illinois Equity Fund:  Springfield, Illinois
                                                                                    
                       1992 LP                                $ 500,000           $ 500,000           $ 500,000
                       1994 LP                                $ 828,490           $ 920,131           $ 920,131
                       1996 LP                                $ 753,306           $ 899,048           $ 899,048
                       1998 LP                                $ 264,208           $ 349,144           $ 349,144
                       2000 LP                                $  22,279           $  59,731           $  59,731
                       2002 LP
         St. Louis Equity Fund:  St. Louis, Missouri
                       1999 LLC                               $ 129,054           $ 218,447           $ 218,447
                       2000 LLC                               $  94,931           $ 174,905           $ 174,905
                       2001 LLC                               $  45,000           $ 120,275           $ 120,275
                       2002 LLC                                                   $  45,000           $  45,000
                                                          -------------------------------------------------------
                                            Total CIC:        $2,637,268          $3,241,681          $3,241,681




                                                                                         

                       Ameren Corporation Total:              $8,380,273         $10,007,638          $10,007,638

     Notes
1    On December 19, 2002 UEDC signed a subscription agreement for the SLEF 2003
     LLC fund in the  amount of  $1,500,000.  As of year end no equity  had been
     paid on this investment.
2    There was no  additional  equity  paid in during  the  period  June 4, 2002
     through 12/31/2002

        SEC Authorized Amount                $125,000,000          Remaining
                                                                    Balance
        Commitments prior to SEC Order        $16,600,000        $108,400,000
        Subsequent Commitments
                SLEF 2003 (12/19/2002)        $ 1,500,000        $106,900,000