(As filed on January 29, 2003) File No. 70-10078 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 ---------------------------------------- FORM U-1/A AMENDMENT NO. 3 TO APPLICATION OR DECLARATION UNDER THE PUBLIC UTILITY HOLDING COMPANY ACT OF 1935 -------------------------------------- AMEREN CORPORATION AMEREN ENERGY FUELS AND SERVICES COMPANY 1901 Chouteau Avenue St. Louis, Missouri 63103 CILCORP INC. CENTRAL ILLINOIS LIGHT COMPANY CENTRAL ILLINOIS GENERATION, INC. 300 Liberty Street Peoria, Illinois 61602 (Names of companies filing this statement and addresses of principal executive offices) --------------------------------------- AMEREN CORPORATION (Name of top registered holding company parent) ------------------------------------- Steven R. Sullivan Vice President Regulatory Policy, General Counsel and Secretary Ameren Services Company 1901 Chouteau Avenue St. Louis, Missouri 63103 (Name and address of agent for service) -------------------------------------------------------- The Commission is requested to send copies of all notices, orders and other communications in connection with this Application/Declaration to: Joseph H. Raybuck, Esq. William T. Baker, Jr., Esq. Ameren Services Company Thelen Reid & Priest LLP 1901 Chouteau Avenue 875 Third Avenue St. Louis, Missouri 63103 New York, New York 10022 William J. Harmon, Esq. William C. Weeden Jones Day Skadden, Arps, Slate, Meagher 77 West Wacker Drive & Flom, L.L.P. Chicago, Illinois 60601-1692 1440 New York Avenue, NW Washington, DC 20005 2 The Application/Declaration filed in this proceeding on August 2, 2002, as amended and restated in its entirety by Amendment No. 1, filed October 28, 2002, and by Amendment No. 2, filed January 28, 2003, is hereby further amended as follows: the Applicants are filing herewith Revised Exhibit I - Description of and Legal Basis for Retention of Non-Utility Subsidiaries and Investments of CILCORP. SIGNATURES Pursuant to the requirements of the Public Utility Holding Company Act of 1935, as amended, the undersigned companies have duly caused this amended Application/Declaration to be signed on their behalves by the undersigned thereunto duly authorized. AMEREN CORPORATION AMEREN ENERGY FUELS AND SERVICES COMPANY By: /s/ Steven R. Sullivan ------------------------------------- Name: Steven R. Sullivan Title: Vice President Regulatory Policy, General Counsel, and Secretary CILCORP INC. CENTRAL ILLINOIS GENERATION, INC. By: /s/ Leonard M. Lee ------------------------------------- Name: Leonard M. Lee Title: President CENTRAL ILLINOIS LIGHT COMPANY By: /s/ Leonard M. Lee ------------------------------------- Name: Leonard M. Lee Title: Chairman of the Board and Chief Executive Officer Date: January 29, 2003 3