================================================================================ U.S. SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM U-9C-3 QUARTERLY REPORT PURSUANT TO RULE 58 OF THE PUBLIC UTILITY HOLDING COMPANY ACT OF 1935 For the quarterly period ended March 31, 2005 CENTERPOINT ENERGY, INC. (NAME OF REGISTERED HOLDING COMPANY) 1111 Louisiana, Houston, Texas 77002 (Address of Principal Executives Offices) Inquiries concerning this Form U-9C-3 may be directed to either: Walter L. Fitzgerald Vice President and Controller CenterPoint Energy, Inc. 1111 Louisiana Houston, Texas 77002 (713) 207-7425 OR Rufus Scott Vice President & Deputy General Counsel CenterPoint Energy, Inc. 1111 Louisiana Houston, Texas 77002 (713) 207-7451 ================================================================================ -1-

CENTERPOINT ENERGY, INC. FORM U-9C-3 FOR THE QUARTER ENDED MARCH 31, 2005

Table of Contents Page ------ Item 1 Organization Chart....................................................................... 3 Item 2 Issuances and Renewals of Securities and Capital Contributions........................... 6 Item 3 Associated Transactions.................................................................. 7 Item 4 Summary of Aggregate Investment.......................................................... 12 Item 5 Other Investments........................................................................ 13 Item 6 Financial Statements and Exhibits........................................................ 14 Signature................................................................................ 15
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ITEM 1. ORGANIZATION CHART

PERCENTAGE ENERGY OR OF VOTING GAS RELATED DATE OF STATE OF SECURITIES NAME OF REPORTING COMPANY COMPANY ORGANIZATION ORGANIZATION HELD NATURE OF BUSINESS - -------------------------------------- --------------- --------------- --------------- ------------- -------------------------- CenterPoint Energy, Inc. Holding Company Utility Holding Company, LLC(a) Intermediate Holding Company Subsidiaries of Utility Holding Company, LLC: CenterPoint Energy Power Systems, Energy Related 04/27/2000 Del 100% Formed to develop and Inc. * commercialize fuel cell technology. Company has no current activity/operations. CenterPoint Energy Products, Inc. Energy Related 01/27/1993 Del 100% Company formerly sold various product to commercialize its intellectual property relating to its energy business. Company Only current activity relates to investigating technology of broadband over power lines. Utility Rail Services, Inc. * Energy Related 06/10/1993 Del 100% Formerly provided rail car maintenance services. Company has no current activity/operations. CenterPoint Energy Resources Corp. Subsidiaries of CenterPoint Energy Resources Corp.: ALG Gas Supply Company* Energy Related 01/11/1982 Del 100% Formerly engaged in gas marketing. Arkla Industries, Inc. Energy Related 09/04/1957 Del 100% Previously manufactured appliances and now handles recall issues. Arkla Products Company* Energy Related 12/11/1987 Del 100% Formerly manufactured gas grills. CenterPoint Energy Alternative Energy Related 02/25/1997 Tex 100% Formed to establish Fuels, Inc. commercial retail outlets to promote, market, distribute, and sell compressed natural gas. CenterPoint Energy Gas Processing, Gas 10/25/1995 Del 100% Owns an interest in a Inc. Related natural gas processing plant. Waskom Gas Processing Company Gas 1995 Tex 50% General partnership Related between CenterPoint Energy Gas Processing and Prism Gas Systems, Inc. and owns a gas processing plant in Harrison County, Texas.
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PERCENTAGE OF VOTING ENERGY OR GAS DATE OF STATE OF SECURITIES NAME OF REPORTING COMPANY RELATED COMPANY ORGANIZATION ORGANIZATION HELD NATURE OF BUSINESS - -------------------------------------- ---------------- --------------- --------------- -------------- -------------------------- CenterPoint Energy Gas Transmission Gas 01/31/1992 Del 100% Interstate gas pipeline Company Related system. CenterPoint Energy Hub Services, Gas 02/16/1994 Del 100% Formerly provided agency Inc.* Related services in gas transportation. CenterPoint Energy Illinois Gas Gas 06/30/1998 Del 100% Owns and operates a Transmission Company Related short intrastate gas transmission company in the state of Illinois. CenterPoint Energy Intrastate Gas 06/26/1998 Del 100% Holding Company for Pine Holdings, LLC Related Pipeline LLC. Pine Pipeline Acquisition Gas 05/22/1998 Del 81.4% CenterPoint Energy and Company, LLC Related Louisiana Gas Services jointly own an LLC that owns a small intrastate pipeline in Northern Louisiana. CenterPoint Energy Gas Services, Energy Related 10/18/1995 Del 100% Engaged in natural gas Inc. marketing. CenterPoint Energy - Mississippi Gas 09/03/1958 Del 100% Interstate gas pipeline River Transmission Corporation Related system. CenterPoint Energy MRT Holdings, Gas 11/17/2000 Del 100% Company has no current Inc. * Related activity/operations. CenterPoint Energy MRT Energy Related 08/28/1995 Del 100% Its sole purpose is the Services Company ownership of a canal, which carries inlet water to generating plants in California. The Company is to be divested. CenterPoint Energy Pipeline Gas 11/13/1997 Del 100% Offers engineering, Services, Inc. Related project management, construction management, pipeline operation and other turn-key construction and project management solutions for companies. CenterPoint Energy OQ, LLC Energy Related 03/23/2000 Del 100% Own 50% partnership interest in OQ Partners
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PERCENTAGE OF VOTING ENERGY OR GAS DATE OF STATE OF SECURITIES NAME OF REPORTING COMPANY RELATED COMPANY ORGANIZATION ORGANIZATION HELD NATURE OF BUSINESS - -------------------------------------- ---------------- --------------- --------------- -------------- -------------------------- OQ Partners Energy Related 03/22/2000 Tex 50% Developing & marketing training modules for operator qualification rule compliance and record keeping. Entex Gas Marketing Company* Energy Related 4/23/1987 Tex 100% Formerly engaged in natural gas marketing. Entex NGV, Inc.* Energy 6/03/1993 Del 100% Formed to market Related compressed natural gas and natural gas vehicles. Entex Oil & Gas Company* Gas 9/05/1977 Tex 100% Formerly pursued oil and Related gas exploration and production. CenterPoint Energy Intrastate Gas 11/19/1977 Tex 100% Intrastate gas Pipelines, Inc. Related transmission in Texas and Louisiana. Minnesota Intrastate Pipeline Company Gas 10/06/1993 Del 100% Gas transmission. Owns Related pipeline in Minnesota. National Furnace Company Energy Related 6/14/1976 Tex 100% Exists for fulfill obligations on furnaces it formerly sold. Noram Utility Services, Inc. * Energy Related 08/28/1995 Del 100% Company has no current activity/operations. Previously provided line locating and related services.
(a) CenterPoint Energy Utility Holding Company, LLC is a wholly-owned, registered public utility holding company subsidiary of CenterPoint Energy, Inc. CenterPoint Energy Power Systems, Inc., CenterPoint Energy Products, Inc., Utility Rail Services, Inc. and CenterPoint Energy Resources Corp. are direct, wholly owned subsidiaries of Utility Holding Company, LLC. Other companies are direct or indirect subsidiaries of CenterPoint Energy Resources Corp, as indicated. *- operationally inactive entity LLC: Limited Liability Corporation -5-

ITEM 2.-ISSUANCES AND RENEWALS OF SECURITIES AND CAPITAL CONTRIBUTIONS ISSUANCES AND RENEWALS OF SECURITIES (in thousands of dollars):

Person to Type of Principal whom Collateral Consideration Company issuing security amount of Issue or Cost of security was given with received for security issued security renewal capital issued security each security - --------------- -------- --------- -------- ------- ------------ ---------- -------------- None
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ITEM 3.-ASSOCIATED TRANSACTIONS Part I.-Transactions performed by reporting companies on behalf of associate companies (in thousands of dollars).

Reporting Associate Company Company Types of Direct Cost Rendering Receiving Services Costs Indirect of Total Amount Services Services Rendered Charged Costs Charged Capital Billed - ---------------- ---------------- ------------ ----------- ------------- ------- ------------ Minnesota CenterPoint Gas sales $ 1,073 $ 1,073 Intrastate Energy Minnesota purchases Pipeline Company Gas CenterPoint CenterPoint Admin Staff 3 3 Energy Gas Energy Services, Inc. Intrastate Pipelines CenterPoint CenterPoint Gas Sales/ 1,344 1,344 Energy - Energy Gas Gas Trans/ Mississippi Transmission Rev Storage River Transmission CenterPoint CenterPoint Gas Sales/ 2,489 2,489 Energy - Energy Gas Gas Trans/ Mississippi Services Rev Storage River Transmission CenterPoint CenterPoint Other 143 143 Energy Gas Energy Operating Transmission Mississippi Revenue River Transmission CenterPoint CenterPoint Prod. Extr. 1,564 1,564 Energy Gas Energy Field Transmission Services CenterPoint CenterPoint Gas Trans/ 24,494 24,494 Energy Gas Energy Arkla Rev Storage Transmission CenterPoint CenterPoint Gas Sales/ 3,801 3,801 Energy Gas Energy Gas Gas Trans/ Transmission Services Rev Storage/ Other Operating Rev CenterPoint CenterPoint Other 1 1 Energy Pipeline Energy Resources Operating Services Revenue CenterPoint CenterPoint Other Oper 13,741 13,741 Energy Pipeline Energy Rev/ Other Services Mississippi Oper / Cust River Svc Rev Transmission CenterPoint CenterPoint Other Oper 14,232 14,232 Energy Pipeline Energy Gas Rev/ Other Services Transmission Oper / Cust Svc Rev CenterPoint CenterPoint Other Oper 640 640 Energy Pipeline Energy Field Rev/ Other Services Services Oper / Cust Svc Rev CenterPoint CenterPoint Other Oper 39 39 Energy Pipeline Energy Arkla Rev/ Other Services Oper CenterPoint CenterPoint Other 181 181 Energy Pipeline Energy Minnesota Operations Services Gas CenterPoint CenterPoint Other 65 65 Energy Pipeline Energy Entex Operations Services CenterPoint CenterPoint Other Oper 91 91 Energy Pipeline Illinois Gas Rev/ Other Services Transmission Oper CenterPoint Pine Pipeline Other Oper 2 2 Energy Pipeline Acquisition Rev/ Other Services Oper
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Reporting Associate Company Company Types of Direct Cost Rendering Receiving Services Costs Indirect of Total Amount Services Services Rendered Charged Costs Charged Capital Billed - ---------------- ---------------- ------------ ----------- ------------- ------- ------------ CenterPoint CenterPoint Other 150 150 Energy Field Energy Operating Services Mississippi Revenue River Transmission CenterPoint CenterPoint Gas Trans 591 591 Energy Field Energy Gas Rev/ Services Transmission Other Oper Rev CenterPoint CenterPoint Gas Sales (21) (21) Energy Field Energy Arkla Services CenterPoint CenterPoint Gas Sales/ 6,232 6,232 Energy Field Energy Gas Gas Trans Services Services Rev/ Other Oper Rev CenterPoint CenterPoint Other 4 4 Energy Field Energy Entex Operating Services Revenue CenterPoint CenterPoint Prod. Extr. 50 50 Energy Gas Energy Field Processing Services CenterPoint CenterPoint Gas Sales 1,126 1,126 Energy Gas Energy Services Mississippi River Transmission CenterPoint CenterPoint Gas Resale 742 742 Energy Gas Energy Field Services Services CenterPoint CenterPoint Gas Sales/ 17,784 17,784 Energy Gas Energy Arkla Gas Resale Services CenterPoint CenterPoint Gas Resale 15,766 15,766 Energy Gas Energy Minnesota Services Gas CenterPoint CenterPoint Gas Resale 40,446 40,446 Energy Gas Energy Services Intrastate Pipeline CenterPoint CenterPoint Gas Sales/ 58,516 58,516 Energy Gas Energy Entex Gas Resale Services
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Reporting Associate Company Company Types of Direct Cost Rendering Receiving Services Costs Indirect of Total Amount Services Services Rendered Charged Costs Charged Capital Billed - ---------------- ---------------- ------------ ----------- ------------- ------- ------------ CenterPoint LA Trans Div of Gas Resale 12,008 12,008 Energy Gas Entex Services CenterPoint CenterPoint Gas 22 22 Energy Energy Gas Transmission Intrastate Services Pipeline CenterPoint CenterPoint Gas Resale/ 96 96 Energy Energy Entex Gas Trans Intrastate Pipeline CenterPoint CenterPoint Other 26 26 Energy Energy Arkla Operations Alternative Fuels
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Part II.-Transactions performed by associate companies on behalf of reporting companies (in thousands of dollars).

Associate Company Types of Indirect Cost Total Rendering Reporting Company Services Direct Costs Costs of Amount Services Receiving Services Rendered Charged Charged Capital Billed --------- ------------------ -------- ------------ -------- ------- ------- CenterPoint CenterPoint Energy 1 $ 11,322 $ 4,617 $673 $16,612 Energy Service Gas Transmission Co. Company, LLC CenterPoint CenterPoint Energy 1 4,735 27,456 19 32,120 Energy Service Gas Services, Inc. Company, LLC CenterPoint CenterPoint Energy 1 662 1,217 6 1,885 Energy Service Field Services, Inc. Company, LLC CenterPoint CenterPoint Energy 1 588 2 -- 590 Energy Service Mississippi River Transportation Company, LLC CenterPoint CenterPoint Energy- 1 436 2 -- 438 Energy Service Pipeline Services, Inc. Company, LLC CenterPoint CenterPoint Energy 1 25 -- -- 25 Energy Service Alternative Fuels, Inc. Company, LLC CenterPoint CenterPoint Energy 1 6 -- -- 6 Energy Service Power Systems, Inc. Company, LLC CenterPoint CenterPoint Energy 1 4 -- -- 4 Energy Service Illinois Gas Transmission Company, LLC CenterPoint National Furnace 1 3 -- -- 3 Energy Service Company Company, LLC CenterPoint CenterPoint Energy 1 2 -- -- 2 Energy Service Pine Pipeline Acquisition Co. Company, LLC
(1) Services provided include Information Technology, Shared Services, Legal, Finance, Human Resources, and Corporate Communications -10-

Associate Company Types of Indirect Cost Total Rendering Reporting Company Services Direct Costs Costs of Amount Services Receiving Services Rendered Charged Charged Capital Billed --------- ------------------ -------- ------------ -------- ------- ------- CenterPoint CenterPoint Energy Broadband over Energy Houston Products, Inc. Power line services 75 -- -- 75 Electric O & M services CenterPoint CenterPoint Energy GIS services 1 -- -- 1 Energy Houston Pipeline Services, Inc. Electric CenterPoint CenterPoint Energy Rent 135 -- -- 135 Energy Arkla Pipeline Services, Inc. CenterPoint CenterPoint Energy IT Telecom 54 -- -- 54 Energy Arkla Gas Transmission Co. CenterPoint CenterPoint Energy Gas sales and balancing -- 18 18 Energy Minnesota Gas Services, Inc. Gas CenterPoint CenterPoint Energy Line locating 1 477 -- 478 Entex Houston Electric CenterPoint CenterPoint Energy Marketing, admin -- 206 -- 206 Entex Intrastate Pipeline staff, rates CenterPoint CenterPoint Energy Payroll 143 -- -- 143 Entex Alternative Fuels, Inc. CenterPoint CenterPoint Energy Marketing, admin staff, -- 51 -- 51 Entex Intrastate Pipelines, Inc. rates
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ITEM 4.-SUMMARY OF AGGREGATE INVESTMENT (IN THOUSANDS)

Investments in energy-related companies: Total consolidated $ 10,612,446 Line 1 capitalization as of March 31, 2005 Total capitalization multiplied by 15% (Line 1 multiplied by 0.15) 1,591,867 Line 2 Greater of $50 million or line 2 $1,591,867 Line 3 Total current aggregate investment: (categorized by major line of energy-related business) (Category 3) $ (3,279) Natural gas vehicles (Category 4) (12,807) Appliance Sales (Category 5) (10,259) Energy Marketing (Category 7) 1,484 Services ------------ Total current aggregate investment (24,861) 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) $1,616,728 Line 5 ---------- Investments in gas-related companies: Total current aggregate investment: (categorized by major line of energy-related business) Gas related business category 1 $ 1,419,571 (Category 1) Transportation or storage of natural gas Gas related business category 2 28,716 (Category 2) Supply of natural gas ------------ Total current aggregate investment $1,448,287 ----------
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ITEM 5.-OTHER INVESTMENTS (IN THOUSANDS)

OTHER MAJOR LINE OF INVESTMENT IN OTHER INVESTMENT REASON FOR ENERGY-RELATED BUSINESS LAST IN THIS DIFFERENCE IN (a) U-9C-3 REPORT U-9C-3 REPORT OTHER INVESTMENT - -------------------------- ----------------- ------------------- ----------------- None
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ITEM 6.-FINANCIAL STATEMENTS AND EXHIBITS A. Current Period Financial Statements: (filed with a request for confidential treatment) CenterPoint Energy Power Systems, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Power Systems, Inc. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Products, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Products, Inc. Statement of Operations for the three months ended March 31, 2005 Arkla Industries, Inc. Balance Sheet as of March 31, 2005 Arkla Industries, Inc. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Alternative Fuels, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Alternative Fuels, Inc. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Field Services, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Field Services, Inc. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Gas Processing, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Gas Processing, Inc. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Gas Transmission Co. Balance Sheet as of March 31, 2005 CenterPoint Energy Gas Transmission Co. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Illinois Gas Transmission Co. Balance Sheet as of March 31, 2005 CenterPoint Energy Gas Illinois Transmission Co. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Intrastate Holdings, LLC Gas Transmission Co. Balance Sheet as of March 31, 2005 CenterPoint Energy Intrastate Holdings, LLC Gas Co. Statement of Operations for the three months ended March 31, 2005 Pine Pipeline Acquisition Co., LLC Balance Sheet as of March 31, 2005 Pine Pipeline Acquisition Co., LLC Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Gas Services, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Gas Services, Inc. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy- Mississippi River Transmission Corp. Balance Sheet as of March 31, 2005 CenterPoint Energy- Mississippi River Transmission Corp. Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy MRT Services Company Balance Sheet as of March 31, 2005 CenterPoint Energy MRT Services Company Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Pipeline Services, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Pipeline Services, Inc. Statement of Operations for the three Months ended March 31, 2005 -14-

CenterPoint Energy OQ, LLC Balance Sheet as of March 31, 2005 CenterPoint Energy OQ, LLC Statement of Operations for the three months ended March 31, 2005 CenterPoint Energy Intrastate Pipelines, Inc. Balance Sheet as of March 31, 2005 CenterPoint Energy Intrastate Pipelines, Inc. Statement of Operations for the three months ended March 31, 2005 Minnesota Intrastate Pipeline Company Balance Sheet as of March 31, 2005 Minnesota Intrastate Pipeline Company Statement of Operations for the three months ended March 31, 2005 National Furnace Company Balance Sheet as of March 31, 2005 National Furnace Company Statement of Operations for the three months ended March 31, 2005 B. Exhibits: To be filed by amendment. SIGNATURE Pursuant to the requirements of the Public Utility Holding Company Act of 1935, as amended, the Registrant has duly caused this quarterly report to be signed on its behalf by the undersigned thereunto duly authorized. Date: July 15, 2005 CENTERPOINT ENERGY, INC. and its Subsidiaries By: /s/ Walter L. Fitzgerald ----------------------------------- Walter L. Fitzgerald Vice President and Controller CenterPoint Energy, Inc. -15-