SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 In the Matter of: AMEREN CORPORATION SEMI-ANNUAL CERTIFICATE UNION ELECTRIC DEVELOPMENT PURSUANT TO RULE 24UNDER THE CORPORATION PUBLIC UTILITY HOLDING COMPANY CIPSCO INVESTMENT COMPANY ACT OF 1935 CILCORP INVESTMENT MANAGEMENT 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 January 1, 2004 and ending June 30, 2004. 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, B and C 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. Other than the annual tax credits and operating losses which lower the amount of paid taxes, neither Union Electric Development Corporation ("UEDC"), CIPSCO Investment Company ("CIC") or CILCORP Investment Management ("CIM") receive any compensation from these tax credit investments. 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. On April 28, 2004, CIPSCO Investment Company made a $1,000,000 commitment to participate in the 2004 Illinois Equity Fund, 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 D. 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 Exhibit D for the tax credit summary and the statement of assets shown in Exhibits A, B and 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: August 13, 2004 -------------------------------------- Jerre E. Birdsong Vice President and Treasurer 2 Exhibit D Ameren - Equity Tax Credit Investment Summary Union Electric Development Corporation (UEDC) --------------------------------------------- Equity Invested as of 12/31/2003 06/30/2004 St. Louis Equity Fund: St. Louis, MO 1988 LP $ 512,047 $ 512,047 1990 LP $ 484,325 $ 484,325 1991 LP $ 498,931 $ 498,931 1992 LP $ 516,461 $ 516,461 1993 LP $ 489,812 $ 489,812 1994 LP $ 491,028 $ 491,028 1995 LLC $ 493,400 $ 493,400 1996 LLC $ 591,550 $ 591,550 1997 LLC $ 592,532 $ 592,532 1998 LLC $ 495,086 $ 586,294 1999 LLC $ 618,117 $ 799,341 2000 LLC $ 509,760 $ 669,709 2001 LLC $ 390,993 $ 541,437 2002 LLC $ 178,017 $ 343,478 2003 LLC $ 135,000 $ 635,937 2004 LLC $ - $ - Housing Missouri, Inc: St. Louis, MO 1996 LLC $ 286,956 $ 286,956 1997 LLC $ 286,464 $ 286,464 1998 LLC $ 240,933 $ 286,453 -------------------------------------- Total UEDC: $ 7,811,412 $ 9,106,155 CIPSCO Investment Company (CIC) ------------------------------- Illinois Equity Fund: Springfield, Illinois 1992 LP $ 500,000 $ 500,000 1994 LP $ 1,000,000 $ 1,000,000 1996 LP $ 1,000,000 $ 1,000,000 1998 LP $ 446,260 $ 592,000 2000 LP $ 103,464 $ 114,016 2002 LP $ 50,114 $ 54,662 2003 LLC $ - $ - 2004 LLC Refer to Note 1 St. Louis Equity Fund: St. Louis, Missouri 1999 LLC $ 309,059 $ 399,670 2000 LLC $ 254,879 $ 334,853 2001 LLC $ 195,497 $ 270,719 2002 LLC $ 89,009 $ 171,739 -------------------------------------- Total CIC: $ 3,948,282 $ 4,437,659 CILCORP Investment Management (CIM) (Note 2) -------------------------------------------- (This is provided for informational purposes only) Illinois Equity Fund: Springfield, Illinois 1992 LP $ 250,000 $ 250,000 1994 LP $ 250,000 $ 250,000 1996 LP $ 250,000 $ 250,000 1998 LP $ 223,130 $ 296,180 Midwest Equity Fund: Midwest Tax Credit Fund I $ 1,000,000 $ 1,000,000 Midwest Tax Credit Fund II $ 3,000,000 $ 3,000,000 Banc One $ 3,882,731 $ 3,882,731 Sun America 51 $ 7,499,998 $ 7,499,998 -------------------------------------- Total CIM: $ 16,355,859 $ 16,428,909 Ameren Corporation Total: $ 28,115,553 $ 29,972,723 Notes 1 In April 2004, CIPSCO Investment Company signed a subscription agreement for $1,000,000 to participate in the Illinois Equity Fund 2004 LLC fund. 2 Ameren acquired the tax credit investments held in CILCORP subisidaries in 2003 under Holding Company Act Release No. 27645, January 29, 2003 Ameren Corporation, et al. No additional tax credit investments have been made in CIM since the date of the order. 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 IEF 2003(6/6/2003) $500,000 $106,400,000 SLEF 2004 (11/6/2003) $1,500,000 $104,900,000 IEF 2004 (4/28/2004) $1,000,000 $103,900,000