UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM U-9C-3 QUARTERLY REPORT For the quarter ended March 31, 2001 Filed Pursuant to Rule 58 of the Public Utility Holding Company Act of 1935 ALLIANT ENERGY CORPORATION 222 West Washington Avenue Madison, Wisconsin 53703 608-252-3311 ALLIANT ENERGY CORPORATION FORM U-9C-3 For the Quarter Ended March 31, 2001 CONTENTS Page ---- ITEM 1 - Organization Chart 3 ITEM 2 - Issuances and Renewals of Securities and Capital Contributions 5 ITEM 3 - Associate Transactions 6 ITEM 4 - Summary of Aggregate Investment 7 ITEM 5 - Other Investments 7 ITEM 6 - Financial Statements and Exhibits 8 SIGNATURES 8 EXHIBIT A 9 2 ITEM 1 - ORGANIZATION CHART (As of March 31, 2001) ------------------------------------------------------------------------------------------------------------------------------------ Percentage of Name of Company Energy- or Voting Nature of (Organization Chart Hierarchy) Gas-Related Date of State of Securities Business (Reporting companies denoted with (**)) Company Organization Organization Held (a) ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Corporation N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ Cargill-Alliant, L.L.C. (**) Energy 10/29/97 Wisconsin 50% (v) - 2 ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Resources, Inc. N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Development, LLC N/A N/A N/A N/A N/A ---------------------------------------------------------------- --------------------------------------------------------- --------- Argo Power LLC (**) (*) Energy 6/5/00 Delaware 67% Inactive ------------------------------------------------------------------------------------------------------------------------------------ Henwood Energy Services, Inc. (**) Energy 8/9/85 California 17% (i) ------------------------------------------------------------------------------------------------------------------------------------ Energy Performance Services, Inc. (**) Energy 12/17/93 Pennsylvania 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ Cogenex Corporation (**) Energy 9/26/83 Massachusetts 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ APS Cogenex LLC (**) Energy 9/29/85 Delaware 50% (i) ------------------------------------------------------------------------------------------------------------------------------------ Energy Capital and Services I, LP (**) Energy 5/4/90 Massachusetts 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ Energy Capital and Services II, LP (**) Energy 11/13/90 Massachusetts 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ Energy Holdings Corporation (**) Energy 10/3/94 Delaware 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ EUA Cogenex West Corporation (**) Energy 9/26/83 Massachusetts 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ EUA Cogenex-Canada Inc. (**) Energy 10/11/94 Canada 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ EUA Cogenex-Canada Energy Services, Inc. (**) Energy 12/16/97 Canada 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ AGRA Cogenex Joint Venture (**) Energy 7/8/97 Canada 50% (i) ------------------------------------------------------------------------------------------------------------------------------------ Northeast Energy Management, Inc. (**) Energy 1/7/94 Massachusetts 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ Enermetrix.com, Inc. (**) Energy 1/17/95 Delaware 6% (v) - 3 ------------------------------------------------------------------------------------------------------------------------------------ Nth Power Technologies Fund II, L.P. (**) Energy 2/25/00 California 8% (ii) ------------------------------------------------------------------------------------------------------------------------------------ SmartEnergy, Inc. (**) Energy 11/3/00 Delaware 9% (v) - 3 ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Integrated Services Company N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ Industrial Energy Applications, Inc. (**) Energy 2/2/62 Iowa 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ BFC Gas Company L.L.C. (**) Energy 12/7/95 Iowa 60% (vi) ------------------------------------------------------------------------------------------------------------------------------------ Energys, Inc. (**) Energy 6/25/84 Wisconsin 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ RMT, Inc. (**) Energy 7/29/83 Wisconsin 100% (vii) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Residuals Management Technology, Inc., Ohio (**) Energy 1/22/97 Ohio 48% (vii) - 1 ------------------------------------------------------------------------------------------------------------------------------------ RMT North Carolina, Inc. (**) Energy 4/6/69 North Carolina 100% (vii) - 1 ------------------------------------------------------------------------------------------------------------------------------------ RMT, Inc., Michigan (**) Energy 12/15/95 Michigan 100% (vii) - 1 ------------------------------------------------------------------------------------------------------------------------------------ RMT International, Inc. (**) Energy 10/9/97 Wisconsin 100% (vii) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Lake Engineering Inc. (**) (NEW) Energy 9/2/82 Georgia 100% (vii) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Heartland Energy Group, Inc. (**) Energy 6/1/95 Wisconsin 100% (v) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Industrial Energy Applications Delaware Inc. N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ Oak Hill Pipeline L.P. (**) Energy 4/1/97 Texas 99% (ix) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Alliant South Texas Pipeline, L.P. (**) Energy 4/20/99 Texas 99% (ix) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Desdemona, LP (**) (Also owned by Alliant Energy Field Services, LLC) Energy 2/14/00 Delaware 99% (ix) - 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 ------------------------------------------------------------------------------------------------------------------------------------ Percentage of Name of Company Energy- or Voting Nature of (Organization Chart Hierarchy) Gas-Related Date of State of Securities Business (Reporting companies denoted with (**)) Company Organization Organization Held (a) ------------------------------------------------------------------------------------------------------------------------------------ Bastian Bay Pipeline, LP (**) (Also owned by Alliant Energy Field Services, LLC) Energy 8/31/00 Texas 90% (ix) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Field Services, LLC N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Desdemona, LP (**) (Also owned by Industrial Energy Applications Delaware Inc.) Energy 2/14/00 Delaware 99% (ix) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Bastian Bay Pipeline, LP (**) (Also owned by Industrial Energy Applications Delaware Inc.) Energy 8/31/00 Texas 90% (ix) - 1 ------------------------------------------------------------------------------------------------------------------------------------ NG Energy Trading, LLC (**) Energy 9/26/00 Oklahoma 51% (v) - 1 ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Integrated Services - Energy Solutions LLC (**) (NEW) Energy 1/1/01 Iowa 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ Schedin & Associates, Inc. (**) Energy 6/22/82 Minnesota 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Integrated Services - Energy Management LLC (**) (NEW) Energy 1/1/01 Iowa 100% (i) ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Investments, Inc. N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ Heartland Energy Services, Inc. N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ ReGENco L.L.C. (**) Energy 4/19/99 Wisconsin 30% (vii) - 2 ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Transportation, Inc. N/A N/A N/A N/A N/A ------------------------------------------------------------------------------------------------------------------------------------ Williams Bulk Transfer Inc. (**) Energy 4/27/99 Iowa 100% (ix) - 2 ------------------------------------------------------------------------------------------------------------------------------------ N/A - Not applicable (a) The following abbreviations were used: ------------------------------------------------------------------------------------------------------------- Abbreviation Nature of Business ------------------------------------------------------------------------------------------------------------- (i) Energy management services (ii) Development and commercialization of innovative electrotechnologies (v) - 1 Brokering and marketing of energy commodities - natural gas (v) - 2 Brokering and marketing of energy commodities - electricity (v) - 3 Brokering and marketing of energy commodities - natural gas and electricity (vi) Production of alternative fuels (vii) - 1 Environmental licensing, testing, and remediation services (vii) - 2 Integrated turbine and generator services (ix) - 1 Fuel transportation facilities services (ix) - 2 Fuel handling and storage facilities services ------------------------------------------------------------------------------------------------------------- 4 ITEM 2 - ISSUANCES AND RENEWALS OF SECURITIES AND CAPITAL CONTRIBUTIONS: Investment level at March 31, 2001 ------------------------------------------------------------------------------------------------------------------------------------ Principal Company Type of Amount of Issuing Security Security Person to Security Issued (in thousands) Whom Security was Issued ------------------------------------------------------------------------------------------------------------------------------------ Alliant Energy Desdemona, LP Partnership capital $1,935 Industrial Energy Applications Delaware Inc.(1) Partnership capital $2 Alliant Energy Field Services, LLC Alliant Energy Integrated Services - Energy Management LLC Money pool borrowings $12,005 Alliant Energy Resources, Inc.(1) Alliant Energy Integrated Services - Energy Solutions LLC Money pool borrowings $1,200 Alliant Energy Resources, Inc.(1) Alliant South Texas Pipeline, L.P. Partnership capital $6,346 Industrial Energy Applications Delaware Inc.(1) Bastian Bay Pipeline, LP Partnership capital $415 Industrial Energy Applications Delaware Inc.(1) BFC Gas Company L.L.C. Capital $2,600 Industrial Energy Applications, Inc.(1) Cargill-Alliant, L.L.C. Capital $5,000 Alliant Energy Corporation(1) Cogenex Corporation (Incl. subsidiaries) Capital $60,000 Alliant Energy Resources, Inc.(1) Energys, Inc. Capital $8,685 Industrial Energy Applications, Inc.(1) Money pool borrowings $707 Alliant Energy Resources, Inc.(1) Energy Performance Services, Inc. Capital $12,494 Alliant Energy Resources, Inc.(1) Enermetrix.com, Inc. Preferred stock $10,040 Alliant Energy Resources, Inc.(1) Heartland Energy Group, Inc. Common stock $16,100 Alliant Energy Integrated Services Company(1) Money pool borrowings $2,961 Alliant Energy Resources, Inc.(1) Henwood Energy Services, Inc. Common stock $1,342 Alliant Energy Resources, Inc.(1) Industrial Energy Applications, Inc. Common stock $9,971 Alliant Energy Integrated Services Company(1) Money pool borrowings $38,523 Alliant Energy Resources, Inc.(1) Lake Engineering Inc. Capital $2,400 RMT, Inc.(1) NG Energy Trading, LLC Capital $2,250 Heartland Energy Group, Inc.(1) Nth Power Technologies Fund II, L.P. Partnership capital $3,500 Alliant Energy Resources, Inc.(1) Oak Hill Pipeline L.P. Partnership capital $4,408 Industrial Energy Applications Delaware Inc.(1) ReGENco L.L.C. Class A Units $1,083 Heartland Energy Services, Inc.(1) Class B Units $667 Heartland Energy Services, Inc.(1) RMT, Inc. (Incl. all subsidiaries except Lake Engineering Inc.) Common stock $11,822 Alliant Energy Integrated Services Company(1) Schedin & Associates, Inc. Money pool borrowings $965 Alliant Energy Resources, Inc.(1) SmartEnergy, Inc. Preferred stock $6,500 Alliant Energy Resources, Inc.(1) Williams Bulk Transfer Inc. Common stock $1 Alliant Energy Transportation, Inc.(1) Money pool borrowings $5,131 Alliant Energy Resources, Inc.(1) -------------------------------------------------------------------------------- --------------------------------------------------- (1) Associate company. 5 ITEM 3 - ASSOCIATE TRANSACTIONS For the Quarter Ended March 31, 2001 Part I -- Transactions performed by reporting companies on behalf of associate companies (a): ------------------------------------------------------------------------------------------------------------------------------------ Reporting Associate Direct Indirect Total Company Company Types of Costs Costs Cost of Amount Rendering Receiving Services Charged Charged Capital Billed Services Services Rendered (in thousands) (in thousands) (in thousands) (in thousands) ------------------------------------------------------------------------------------------------------------------------------------ IEA Whiting Gas marketing $8 $- $- $8 RMT WP&L Environmental consulting 21 - - 21 RMT IEA Environmental consulting 105 - - 105 RMT IESU Environmental consulting 1 - - 1 RMT Barge Environmental consulting 6 - - 6 RMT Resources Environmental consulting 6 - - 6 RMT IPC Environmental consulting 1 - - 1 Williams Cargill-Alliant Coal handling 193 - - 193 ------------------------------------------------------------------------------------------------------------------------------------ Part II -- Transactions performed by associate companies on behalf of reporting companies (a): ------------------------------------------------------------------------------------------------------------------------------ Associate Reporting Direct Indirect Total Company Company Types of Costs Costs Cost of Amount Rendering Receiving Services Charged Charged Capital Billed Services Services Rendered (in thousands) (in thousands) (in thousands) (in thousands) ------------------------------------------------------------------------------------------------------------------------------ IESU Cargill-Alliant Coal Sales $330 $- $- $330 IESU IEA Fossil plant operations 1 - - 1 RMT IEA Environmental consulting 105 - - 105 Williams Cargill-Alliant Coal handling 193 - - 193 ----------------------------------------------------------------------------------------------------------------------------- (a) The following abbreviations were used: --------------------------------------------------------- --------------------------------------------------------- Abbreviation Legal Name Abbreviation Legal Name --------------------------------------------------------- --------------------------------------------------------- Barge IEI Barge Services, Inc. Resources Alliant Energy Resources, Inc. Cargill-Alliant Cargill-Alliant, L.L.C. RMT RMT, Inc. IEA Industrial Energy Applications, Inc. Whiting Whiting Petroleum Corporation IESU IES Utilities Inc. Williams Williams Bulk Transfer Inc. IPC Interstate Power Company WP&L Wisconsin Power and Light Company --------------------------------------------------------- --------------------------------------------------------- 6 ITEM 4 - SUMMARY OF AGGREGATE INVESTMENT (Dollars in thousands) Investments in energy-related companies: ------------------------------------------------------------------------------------------------------------------------------------ Total consolidated capitalization as of March 31, 2001 (a) $4,575,396 Line 1 ------------------------------------------------------------------------------------------------------------------------------------ Total capitalization multiplied by 15% (Line 1 multiplied by 0.15) 686,309 Line 2 ------------------------------------------------------------------------------------------------------------------------------------ Greater of $50 million or total capitalization multiplied by 15% (Line 2) 686,309 Line 3 ------------------------------------------------------------------------------------------------------------------------------------ Total current aggregate investment subsequent to April 21, 1998 (categorized by major line of energy-related business): Energy-related business category i 97,418 Energy-related business category ii 10,000 Energy-related business category iii - Energy-related business category iv - Energy-related business category v 34,561 Energy-related business category vi 31 Energy-related business category vii 5,150 Energy-related business category viii - Energy-related business category ix 13,830 Energy-related business category x - ___________________________ Total current aggregate investment 160,990 Line 4 ------------------------------------------------------------------------------------------------------------------------------------ Difference between the greater of $50 million or 15% of capitalization and the total aggregate investment of the registered holding company system (Line 3 less Line 4) $525,319 Line 5 ------------------------------------------------------------------------------------------------------------------------------------ Investments in gas-related companies: ------------------------------------------------------------------------------------------------------------------ Total current aggregate investment (categorized by major line of gas-related business): Gas-related business category i $- Gas-related business category ii - Total current aggregate investment _________________________ $- ------------------------------------------------------------------------------------------------------------------ (a) Includes common equity, cumulative preferred stock of subsidiaries, long-term debt, current maturities and sinking funds and short-term debt (variable rate demand bonds, commercial paper, notes payable and other short-term borrowings). ITEM 5 - OTHER INVESTMENTS (Dollars in thousands) ------------------------------------------------------------------------------------------------------------------------------------ Other Other Major Line Of Investment Investment Energy-Related In Last In This Reason for Difference Business U-9C-3 Report U-9C-3 Report In Other Investment ------------------------------------------------------------------------------------------------------------------------------------ Energy-related business category i* $48,475 $48,475 No change. Energy-related business category v* $8,289 $8,289 No change. Energy-related business category vi* $2,569 $2,569 No change. Energy-related business category vii* $11,822 $11,822 No change. Energy-related business category ix* $4,705 $4,408 In the first quarter of 2001, Oak Hill Pipeline L.P. made a distribution of $297 to Industrial Energy Applications Delaware, Inc. ------------------------------------------------------------------------------------------------------------------------------------ * Item 5 includes aggregate investments that were invested or committed to be invested in energy-related companies, prior to the date Rule 58 was effective for Alliant Energy Corporation (April 21, 1998 - Date Alliant Energy Corporation became a registered holding company), for which there is recourse, directly or indirectly, to Alliant Energy Corporation or any subsidiary thereof. 7 ITEM 6 - FINANCIAL STATEMENTS AND EXHIBITS List all financial statements and exhibits filed as a part of this report. A. FINANCIAL STATEMENTS: Filed under confidential treatment pursuant to Rule 104 (b). B. EXHIBITS: 1. Exhibit A - Certificate of Alliant Energy Corporation 2. Copies of contracts required by Item 3: None SIGNATURES Pursuant to the requirements of the Public Utility Holding Company Act of 1935, Alliant Energy Corporation has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on the 25th day of May 2001. ALLIANT ENERGY CORPORATION -------------------------- Registrant By: /s/ John E. Kratchmer Corporate Controller and Chief Accounting Officer ------------------------- (Principal Accounting Officer) John E. Kratchmer 8