Exhibit Index Certain Exhibits previously filed with the Commission are indicated as set forth below. Such Exhibits are incorporated herein by reference. The file number for the Company's Annual Reports on Form 10-K and Quarterly Reports on Form 10-Q is 1-3573. Previously Filed File No. or As Exhibit description Exhibit No. of Report No. Description of Document 3.A -- -- First Restated Articles of Incorporation of Iowa-Illinois Gas and Electric Company. 3.B -- -- By-laws as amended through April 25, 1991. 4.B.1 2-6922 7B Indenture of Mortgage and Deed of Trust dated as of March 1, 1947. 4.B.2 2-6922 7C Supplemental Indenture dated as of March 1, 1947. 4.B.3 2-8112 7B Second Supplemental Indenture dated as of October 1, 1949. 4.B.4 2-9990 4.04 Third Supplemental Indenture dated as of January 15, 1953. 4.B.5 2-62330 2.03E Resignation and appointment of successor Individual Trustee. 4.B.6 2-17786 2.06 Fourth Supplemental Indenture dated as of April 15, 1960. 4.B.7 2-26675 2.07 Fifth Supplemental Indenture dated as of May 1, 1961. 4.B.8 2-28806 2.08 Sixth Supplemental Indenture dated as of July 1, 1967. 4.B.9 2-34089 2.10 Seventh Supplemental Indenture dated as of April 1, 1969. 4.B.10 2-38102 2.10 Eighth Supplemental Indenture dated as of August 15, 1969. 4.B.11 2-38102 2.12 Ninth Supplemental Indenture dated as of September 1, 1970. 4.B.12 2-45994 2.04L Resignation and appointment of successor Individual Trustee. 4.B.13 2-53814 2.03M.2 Tenth Supplemental Indenture dated as of June 15, 1975. 4.B.14 2-55527 2.03N.1 Eleventh Supplemental Indenture dated as of March 15, 1976. 4.B.15 2-57912 2.03O.1 Twelfth Supplemental Indenture dated as of January 15, 1977. 4.B.16 2-58838 2.03P Thirteenth Supplemental Indenture dated as of October 1, 1977. 4.B.17 2-62330 2.03Q.1 Fourteenth Supplemental Indenture dated as of September 1, 1979. 4.B.18 2-66779 2.03R Fifteenth Supplemental Indenture dated as of July 15, 1979. 4.B.19 2-66779 2.03S Sixteenth Supplemental Indenture dated as of January 15, 1980. 4.B.20 2-68600 2.03T Seventeenth Supplemental Indenture dated as of June 15, 1980. 4.B.21 10-K for yr. 4.B.21 Eighteenth Supplemental Indenture ended 12/31/80 dated as of February 15, 1981. 4.B.22 10-K for yr. 4.B.22 Nineteenth Supplemental Indenture ended 12/31/81 dated as of October 1, 1981. 4.B.23 10-Q for qtr. 4.B.23 Twentieth Supplemental Indenture ended 6/30/82 dated as of May 1, 1982. 4.B.24 10-Q for qtr. 4.B.24 Twenty-First Supplemental ended 6/30/82 Indenture dated as of July 1, 1982. 4.B.25 10-K for year 4.B.25 Twenty-Second Supplemental ended 12/31/83 Indenture dated as of February 15, 1984. 4.B.26 10-K for year 4.B.26 Twenty-Third Supplemental ended 12/31/84 Indenture dated as of November 1, 1984. 4.B.27 10-Q for qtr. 4.B.27 Twenty-Fourth Supplemental ended 9/30/85 Indenture dated as of September 1, 1985. 4.B.28 10-Q for qtr. 4.B.28 Twenty-Fifth Supplemental ended 9/30/86 Indenture dated as of September 15, 1986. 4.B.29 10-K for year 4.B.29 Twenty-Sixth Supplemental ended 12/31/86 Indenture dated as of February 15, 1987. 4.B.30 Reg. No. 4.B.30 Resignation and Appointment of 33-39211 successor Individual Trustee 4.B.31 Current report 4.31.A Twenty-Seventh Supplemental on Form 8-K Indenture dated as of October 1, dated 10/1/91 1991. 4.B.32 Current report 4.31.B Twenty-Eighth Supplemental on Form 8-K Indenture dated as of May 15, dated 5/21/92 1992. 4.B.33 Current report 4.32.A Twenty-Ninth Supplemental on Form 8-K Indenture dated as of March 15, dated 3/24/93 1993. 4.B.34 Current report 4.34.A Thirtieth Supplemental Indenture on Form 8-K dated as of October 1, 1993. dated 10/7/93 10.A.1 2-62331 5.01A Quad-Cities Station Ownership Agreement dated as of March 17, 1967 between the Company and Commonwealth Edison Company. 10.A.2 2-45994 5.01B Amendment No. 1 dated as of April 20, 1972 to Quad-Cities Station Ownership Agreement and Quad- Cities Operating Agreement. 10.A.3 2-45994 5.02 Quad-Cities Operating Agreement dated as of November 24, 1967 between the Company and Commonwealth Edison Company. 10.B 2-45994 5.03 Agreement dated February 2, 1971 re Unit 3 George Neal Generating Station between the Company, Iowa Power and Light Company, Iowa Southern Utilities Company and Iowa Public Service Company. 10.C 2-45994 5.04 Transmission Facilities Agreement dated July 28, 1972 between the Company, Iowa Power and Light Company, Iowa Southern Utilities Company and Iowa Public Service Co. 10.D 2-45994 5.07 Financing Agreement dated as of April 15, 1972 among the Company, The First National Bank of Saint Paul, First National Bank of Muscatine, the institutions named in Section 2 thereof and United States Trust Company of New York. 10.E 10-K for yr. 10.E Mid-Continent Area Power Pool ended 12/31/81 Agreement as amended through Amendment No. 14 effective May 1, 1982. 10.F.1 2-49376 5.08 Agreement dated July 31, 1973 re Unit 3 Council Bluffs Generating Station between the Company, Cedar Falls Municipal Electric Utility, Central Iowa Power Cooperative, Inc., Corn Belt Power Co-operative, Inc., Eastern Iowa Light and Power Cooperative Inc. and Iowa Power and Light Co. 10.F.2 2-57912 5.08B Amendment No. 1 to Council Bluffs Generating Station Unit 3 Agree- ment, dated January 31, 1975. 10.F.3 2-57912 5.08C Amendment No. 2 to Council Bluffs Generating Station Unit 3 Agree- ment, dated September 5, 1975. 10.G 2-53814 5.09 Agreement dated April 16, 1975 re Unit 1 Ottumwa Generating Station between the Company, Iowa Power and Light Company, Iowa Southern Utilities Company and Iowa Public Service Company. 10.H.1 2-53814 5.10 Ownership Agreement dated as of August 15, 1974 re Units 1 and 2 Carroll County Station among the Company, Commonwealth Edison Company and Interstate Power Company. 10.H.2 2-53814 5.11 Operating Agreement dated as of August 15, 1974 re Units 1 and 2 Carroll County Station among the Company, Commonwealth Edison Company and Interstate Power Company. 10.I.1 2-58838 5.12 Agreement dated October 4, 1977 re Unit 1 Louisa Generating Station among the Company, Iowa Power and Light Company, Iowa Public Service Company, Eastern Iowa Light and Power Cooperative and City of Tipton. 10.I.2 10-K for yr. 10.J.2 Amendment No. 1 to Unit 1 Louisa ended 12/31/80 Generating Station Agreement, dated May 23, 1980. 10.I.3 10-K for yr. 10.I.3 Amendment No. 2 to Unit 1 Louisa ended 13/31/82 Generating Station Agreement, dated April 26, 1982. 10.I.4 10-K for yr. 10.I.4 Amendment No. 3 to Unit 1 Louisa ended 12/31/82 Generating Station Agreement, dated February 2, 1983. 10.I.5 10-K for yr. 10.I.5 Amendment No. 4 to Unit 1 Louisa ended 12/31/83 Generating Station Agreement, dated May 26, 1983. 10.I.6 10-K for yr. 10.I.6 Amendment No. 5 to Unit 1 Louisa ended 12/31/83 Generating Station Agreement dated October 11, 1983. 10.I.7 10-K for year 10.I.7 Amendment No. 6 to Unit 1 Louisa ended 12/31/85 Generating Station Agreement dated May 29, 1985. 10.J.1 Current report II Rights Agreement dated as of on Form 8-K February 25,1992 between the dated 2/26/92 Company and First Chicago Trust Company of New York, as Rights Agent 10.K.1* -- -- Severance Plan In The Event Of A Change In Control, as amended as of July 1, 1993 10.K.2* -- -- Supplemental Retirement Plan for Principal Officers, as amended as of July 1, 1993 10.K.3* -- -- Compensation Deferral Plan for Principal Officers, as amended as of July 1, 1993 10.K.4* 10-K for year 10.K.4 Board of Directors' Compensation ended 12/31/92 Deferral Plan 10.K.5* 10-K for year 10.K.5 Trust Agreement ended 12/31/92 10.K.6* -- -- Key Employee Sustained Performance Plan 10.L.1 10-K for year 10.L.1 Employee Stock Purchase Plan ended 12/31/92 13.A.1 -- -- "Shareholders of Record (1993)" appearing on page 43 and "Stock Listing" appearing on page 45 of the Company's Annual Report to Shareholders for 1993, incorporated by reference into Item 5 of this Form 10-K. 13.A.2 -- -- "Utility Revenues," "Net Income," "Net Income on Common Shares," "Common Share Statistics-- Earnings per Share," "Total Assets," "Capitalization" and "Common Share Statistics--Annual Dividend Rate at December 31" for the years 1989-1993, appearing on page 43 of the Company's Annual Report to Shareholders for 1993, incorporated by reference into Item 6 of this Form 10-K. 13.A.3 -- -- "Management's Discussion and Analysis of Financial Condition and Results of Operations," appearing on pages 21-25 of the Company's Annual Report to Shareholders for 1993, incorporated by reference into Item 7 of this Form 10-K. 13.A.4 -- -- "Financial Statements and Supplementary Data," appearing on pages 26-42 of the Company's Annual Report to Shareholders for 1993, incorporated by reference into Items 1(b), 8 and 14(a)(1) of this Form 10-K. 21 -- -- Subsidiaries of the Registrant. 23.A -- -- Consent of Deloitte & Touche. 23.B -- -- Consent of Arthur Andersen. * Compensatory Plan or Arrangement for Directors or Executive Officers of the Company.