Date of Filing: September 3, 2002 File No. ________ Form U5A NOTIFICATION OF REGISTRATION Filed under Section 5(a) of the Public Utility Holding Company Act of 1935 CenterPoint Energy, Inc. Utility Holding, LLC Name of Registrants The undersigned holding companies hereby notify the Securities and Exchange Commission that they register under and pursuant to the provisions of Section 5(a) of the Public Utility Holding Company Act of 1935 and furnish the following information as to the registrants and subsidiary companies thereof: (1) Exact name of registrants: CenterPoint Energy, Inc. Utility Holding, LLC (2) Address of principal executive offices: CenterPoint Energy, Inc. is located at: 1111 Louisiana Street, Houston, Texas 77002 Utility Holding, LLC is located at: 200 West Ninth Street Plaza, Suite 411, Wilmington,Delaware 19801 (3) Name and address of officer to whom notices and communications should be addressed: Notices with respect to each registrant should be sent to: Rufus S. Scott Vice President and Assistant Corporate Secretary CenterPoint Energy, Inc. 1111 Louisiana Street Houston, TX 77002 (4) Certain information regarding the registrants and each subsidiary company thereof (indented to reflect parent-subsidiary relationships). The parent-subsidiary relationships set forth in Exhibit A are current as of September 1, 2002, and assume the consummation of the "Electric Restructuring" and the transactions necessary to replace Reliant Energy, Incorporated with CenterPoint Energy, Inc. as the holding company for the regulated operations, but do not assume consummation of other transactions contemplated to be part of the "Restructuring" including the "Distribution" of Reliant Resources, Inc. shares, the "Texas Genco IPO" or the "GasCo Separation," in each case as defined or described in Amendment No. 7 to CenterPoint's Application/Declaration in File No. 070-09895, filed July 5, 2002. See Exhibit A hereto.

SIGNATURE Pursuant to the requirements of the Public Utility Holding Company Act of 1935, the registrants have caused this Notification of Registration to be duly signed on their behalf in the City of Houston and State of Texas on the 30th day of August, 2002. CENTERPOINT ENERGY, INC. By: /s/ Rufus S. Scott ------------------------------------- Name: Rufus S. Scott Title: Vice President and Assistant Corporate Secretary Attest: /s/ Richard B. Dauphin - ------------------------------------ Name: Richard B. Dauphin Title: Assistant Corporate Secretary VERIFICATION State of Texas County of Harris The undersigned being duly sworn deposes and states that he has duly executed the attached Notification of Registration dated August 30, 2002 for and on behalf of CenterPoint Energy, Inc. and Utility Holding, LLC; that he is the Vice President and Assistant Corporate Secretary of CenterPoint Energy, Inc. (Utility Holding, LLC's parent company); and that all action taken by stockholders, directors, and other bodies necessary to authorize deponent to execute and file such instrument has been taken. Deponent further says that he is familiar with such instrument and the contents thereof, and that the facts therein set forth are true to the best of his knowledge, information and belief. By: /s/ Rufus S. Scott ------------------------------------- Name: Rufus S. Scott Title: Vice President and Assistant Corporate Secretary Subscribed and sworn to before me, a notary public this 30th day of August, 2002. /s/ Naureen Spitzer - ------------------------------------ My commission expires April 1, 2005 --------------- [SEAL]

Exhibit Index

Name Description ---- ----------- Ex-A CenterPoint Energy, Inc. Parent-Subsidiary Chart

EXHIBIT A STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS CenterPoint Energy, Inc. Corporation TX Holding Company CenterPoint Energy, Inc. Corporation DE Inactive Utility Holding, LLC LLC DE Holding Company CenterPoint Energy Houston Electric, LLC ("T&D Utility") LLC TX Electric Utility Texas Genco Holdings, Inc. Corporation TX Holding Company Texas Genco LP, LLC LLC DE Holding Company Texas Genco GP, LLC LLC TX Holding Company Texas Genco, LP (99% interest owned by CenterPoint Limited DE Electric Utility Energy, Inc.; 1% interest owned by Texas Genco GP, LLC) Partnership Reliant Energy Resources Corp. Corporation DE Holding Company (Energy-Related) ALG Gas Supply Company Corporation DE Inactive Allied Materials Corporation Corporation TX Inactive Arkansas Louisiana Finance Corporation Corporation DE Financing Arkla Industries Inc. Corporation DE Inactive Arkla Products Company Corporation DE Inactive Blue Jay Gas Company Corporation DE Inactive Entex Fuels, Inc. Corporation TX Gas Sales and Marketing Entex Gas Marketing Company Corporation TX Gas Sales and Marketing Entex Gas Resources Corp. Corporation TX Gas Sales and Marketing Entex NGV, Inc. Corporation DE Inactive Entex Oil & Gas Co. Corporation TX Inactive Illinois Gas Transmission Company Corporation DE Intrastate Pipeline Operations Industrial Gas Supply Corporation Corporation TX Intrastate Pipeline Operations 1

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Intex, Inc. Corporation TX Inactive Louisiana Unit Gas Transmission Company Corporation TX Intrastate Pipeline Operations Minnesota Intrastate Pipeline Company Corporation DE Intrastate Pipeline Operations Mississippi River Transmission Corporation Corporation DE Interstate Pipeline MRT Holdings, Inc. Corporation DE Financing MRT Services Company Corporation DE Real Estate MRT Energy Marketing Company Corporation DE Gas Sales and Marketing National Furnace Company Corporation TX Inactive NorAm Financing I Statutory DE Financing Business Trust NorAm Utility Services, Inc. Corporation DE Inactive Reliant Energy Consumer Group, Inc. Corporation DE Inactive Reliant Energy Field Services, Inc. Corporation DE Natural Gas Gathering Systems Reliant Energy Field Services Holdings, Inc. Corporation DE Financing Reliant Energy Gas Processing, Inc. Corporation DE Gas Processing Reliant Energy Funds Management, Inc. Corporation DE Financing Reliant Energy Gas Transmission Company Corporation DE Interstate Pipeline Reliant Energy Hub Services, Inc. Corporation DE Inactive Reliant Energy Intrastate Holdings, LLC LLC DE Intrastate Pipeline Operations Pine Pipeline Acquisition Company, LLC LLC DE Intrastate Pipeline (81.4% interest) Operations Reliant Energy Pipeline Services, Inc. Corporation DE Pipeline Project Management and Facility Operation Services 2

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy OQ, LLC LLC DE Intermediate Holding Company OQ Partners, a general partnership (50% interest) Partnership TX Training Services Reliant Energy Retail, Inc. Corporation DE Gas Sales and Marketing Reliant Energy Retail Interests, Inc. Corporation DE Financing Reliant Energy Trading and Transportation Group, Inc. Corporation TX Administrative Payroll Services Unit Gas Transmission Company Corporation TX Intrastate Pipeline Operations United Gas, Inc. Corporation TX Inactive HL&P Capital Trust I Statutory DE Financing Business Trust HL&P Capital Trust II Statutory DE Financing Business Trust HL&P Receivables, Inc. Corporation DE Inactive Houston Industries Energy (UK), Inc Corporation DE Inactive Houston Industries FinanceCo GP, LLC LLC DE Financing Houston Industries FinanceCo LP (99% interest owned by Limited DE Financing CenterPoint Energy, Inc.; 1% interest owned by Houston Partnership Industries FinanceCo GP, LLC)) Houston Industries Funding Company Corporation DE Financing Houston Industries Incorporated Corporation TX Inactive Houston Lighting & Power Company Corporation TX Inactive NorAm Energy Corp.(2) Corporation DE Inactive REI Trust I Statutory DE Financing Business Trust REI Trust II Statutory DE Financing Business Trust 3

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy FinanceCo II GP, LLC LLC DE Financing Reliant Energy FinanceCo II LP (99% interest owned by CenterPoint Energy, Limited DE Financing Inc.; 1% interest owned by Reliant Energy FinanceCo II GP, LLC) Partnership Reliant Energy FinanceCo III GP, LLC LLC DE Financing Reliant Energy FinanceCo III LP (99% interest owned by CenterPoint Energy, Limited DE Financing Inc; 1% interest owned by Reliant Energy FinanceCo III GP, LLC) Partnership Reliant Energy FinanceCo IV GP, LLC LLC DE Financing Reliant Energy FinanceCo IV LP (99% interest owned by CenterPoint Energy, Limited DE Financing Inc.; 1% interest owned by Reliant Energy FinanceCo IV GP, LLC) Partnership Reliant Energy Investment Management, Inc. Corporation DE Financing Reliant Energy Power Systems, Inc. Corporation DE Energy-related Reliant Energy Products, Inc. Corporation DE Inactive Reliant Energy Properties, Inc. Corporation DE Real Estate Reliant Energy Tegco, Inc. Corporation DE Inactive Reliant Energy Thermal Systems, Inc. Corporation DE Energy-related Reliant Energy Thermal Systems (Delaware), Inc. Corporation DE Energy-related Northwind Houston L.P. (74.61% interest owned by CenterPoint Energy, Limited DE Energy-related Inc.; less than 1% owned by Northwind Houston L.L.C.) Partnership Northwind Houston L.L.C. (75% interest) LLC DE Energy-related Reliant Energy Transition Bond Company LLC LLC DE Financing Reliant Energy Water, Inc. Corporation DE Inactive Utility Rail Services, Inc. Corporation DE Inactive UFI Services, Inc. Corporation DE Inactive Reliant Energy International, Inc. Corporation DE Holding Company (Foreign Utility Investments) HI Energy Holdings I B.V.* Reliant Energy Brazil Ltd.* HIE Brasil Rio Sul Ltda.* Reliant Energy International Brasil Ltda. (99.9%; 0.1% interest owned by Reliant Energy Brazil Tiete Ltd.)* 4

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy Brasil, Ltda. (99.9995% interest)* Reliant Energy Brazil Tiete Ltd.* Reliant Energy Brazil Ventures Ltd.* Reliant Energy Colombia Ltda. (99% interest; 1% interest owned by Reliant Energy International Holdings, LLC)* Reliant Energy Holdings Ltd.* Reliant Energy International II, Inc. Corporation DE Holding Company HIE Ford Heights, Inc. Corporation DE Inactive HIE Fulton, Inc. Corporation DE Inactive Reliant Energy India, Inc. Corporation Mauritius Intermediate Holding Company Reliant Energy Rain, Inc. Corporation Mauritius Intermediate Holding Company Rain Calcining Limited (24.79% interest)** Reliant Energy International Holdings, LLC** Reliant Energy El Salvador, S.A. de C.V. (99% interest; 1% owned by Reliant Energy International, Inc.)** Reliant Energy International Services, Inc.* Reliant Energy Light, Inc. Corporation DE Holding Company Reliant Energy Cayman Holdings Ltd. Corporation Cayman Intermediate Holding Islands Company Reliant Energy Argentina S.A. (99% interest) Corporation Argentina Intermediate Holding Company Reliant Energy Argener S.A. (51% interest owned by Reliant Energy Argentina S.A; 49% owned by Reliant Energy Argentine Holdings, Ltd.)** Reliant Energy Opco S.A. (99.94% interest held by Corporation Argentina Power Generation Reliant Energy Argener S.A.; 0.06% owned by Security Maintenance Services Holdings S.A. on behalf of Reliant Energy International, Inc.) Reliant Energy Argentine Holdings Ltd. Corporation Cayman Intermediate Holding Islands Company 5

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy Cayman Investments Ltd.* Reliant Energy Cayman Ltd.* Reliant Energy Cayman Acquisitions Ltd.* Reliant Energy Outsource Ltd.** Venus Generation El Salvador (50% interest)* Reliant Energy Salvador Holding Company Ltd.* Reliant Energy Santiago del Estero, S.A. (99% interest held by Corporation Argentina Holding Company Salvador Holding Company Ltd.; 1% owned by Security Holdings S.A. on behalf of Reliant Energy International, Inc.) Empresa Distribuidora de Electricidad de Santiago del Estero S.A. ("EDESE") (90% interest; 10% owned by Provincia de Santiago del Estero (employees of EDESE through ESOP))** Worldwide Electric Holdings B.V.* Reliant Resources, Inc. (83% interest) Corporation DE Holding Company (Non-Utility Energy Related) Arkla Finance Corporation Corporation DE Inactive GuideStreet, Inc. Corporation DE Informational Services Reliant Energy Broadband, Inc. Corporation DE Investment - Telecommunications Reliant Energy Communications, Inc.(1) Corporation DE Telecommunications and Internet Services Reliant Energy Communications (Delaware), LLC(2) LLC DE Telecommunications and Internet Services Insync Internet Services, Incorporated(3) Corporation TX Inactive Reliant Energy Europe Trading & Marketing, Inc. Corporation DE Energy Trading and Marketing Reliant Energy Net Ventures, Inc. Corporation DE Investment - E-Business CapTrades GP, LLC (60% interest) LLC DE GP of CapTrades, LP 6

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy Retail Holdings, LLC LLC DE Electric Energy Supply (Retail) and Energy Services Reliant Energy Customer Care Services, LLC LLC DE Retail Customer Service Reliant Energy Retail Services, LLC LLC DE Retail Customer Service RE Retail Receivables, LLC LLC DE Administrative Services Reliant Energy Electric Solutions, LLC LLC DE Retail Customer Service Reliant Energy Solutions, LLC LLC DE Integrated Energy Solutions Reliant Energy Capital, LLC LLC DE LP of Reliant Energy Capital, LP Reliant Energy Capital, LP (99% interest; 1% interest Limited DE Inactive owned by Reliant Energy Solutions, LLC) Partnership Reliant Energy Solutions California, Inc. Corporation DE Integrated Energy Solutions Reliant Energy Solutions Holdings, LLC LLC DE Holding Company (for Retail Electric Provider) Reliant Energy Solutions East, LLC LLC DE (Future) Retail Electric Provider (Pending Certification) Texas Star Energy Company Corporation DE Inactive (Namesaver) StarEn Power, LLC LLC DE Retail Electric Provider Reliant Energy Services, Inc. Corporation DE Energy Trading and Marketing Reliant Energy Gas Storage, LLC LLC DE Gas Storage Reliant Energy Napoleonville Gas Storage, LLC LLC DE Gas Storage 7

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy Services Channelview LLC LLC DE Energy Trading and Marketing Reliant Energy Services Desert Basin, LLC LLC DE Energy Trading and Marketing Reliant Energy Services Mid-Stream, LLC LLC DE Gas Pipeline Operation and Services Reliant Energy Services New Mexico, LLC LLC DE Energy Trading and Marketing Reliant Energy Services International, Inc. Corporation DE Energy Trading and Marketing Reliant Energy Services Canada, Ltd. Corporation Canada Energy Trading and Marketing Reliant Energy Trading Exchange, Inc. Corporation DE Holding Company (Investments in Trading and Marketing E-Commerce) Energy Platform Trading Holding Company, Inc. (16.67% interest) Corporation DE Energy Trading and Marketing Reliant Resources International Services, Inc. Corporation DE Support Services Reliant Energy Ventures, Inc. Corporation DE Venture Capital Reliant Energy Wholesale Service Company Corporation DE Support Services ReliantEnergy.com, Inc. Corporation DE Inactive Reliant Energy Power Generation, Inc. Corporation DE Holding Company (Power Generation, Development, Operations and Related Activities) El Dorado Energy, LLC (50% interest) LLC DE Exempt Wholesale Generator Reeves County Land Associates, LLC LLC DE Gas Storage Reliant Energy Arrow Canyon, LLC LLC DE Power Plant Development 8

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy Aurora Holding Corp. Corporation DE Holding Company (Generation Assets) Reliant Energy Aurora I, LP (99% interest; 1% interest Limited DE GP of Reliant Energy owned by Reliant Energy Aurora Development Corp.) Partnership Aurora, LP Reliant Energy Aurora II, LP (99% interest; 1% interest Limited DE LP of Reliant Energy owned by Reliant Energy Aurora Development Corp.) Partnership Aurora, LP Reliant Energy Aurora, LP (99% interest; 1% interest Limited DE Exempt Wholesale owned by Reliant Energy Aurora I, LP) Partnership Generator Reliant Energy Aurora Development Corp. Corporation DE GP of Reliant Energy Aurora I, LP and Reliant Energy Aurora II, LP Reliant Energy Bighorn, LLC LLC DE Power Project Development Reliant Energy California Holdings, LLC LLC DE Holding Company (Power Generation Facilities) Reliant Energy Coolwater, Inc. Corporation DE Exempt Wholesale Generator Reliant Energy Ellwood, Inc. Corporation DE Exempt Wholesale Generator Reliant Energy Etiwanda, Inc. Corporation DE Exempt Wholesale Generator Reliant Energy Mandalay, Inc. Corporation DE Exempt Wholesale Generator Reliant Energy Ormond Beach, Inc. Corporation DE Exempt Wholesale Generator Reliant Energy Capital (Europe), Inc. Corporation DE Power Generation and Development of Trading Operations 9

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Reliant Energy Europe, Inc. Corporation DE Holding Company (Power Generation Companies) Reliant Energy Wholesale (Europe) Holdings B.V. Corporation Netherlands Partner in Foreign Utility Company Reliant Energy Wholesale (Europe) Holdings II C.V. Limited Netherlands Partner in Foreign (99.5% interest; 0.5% interest owned by Reliant Energy Partnership Utility Company Wholesale (Europe) Holdings B.V.) Reliant Energy Wholesale (Europe) C.V. (99.5% interest; Limited Netherlands Partner in Foreign 0.5% interest owned by Reliant Energy Wholesale (Europe) Partnership Utility Company Holdings B.V.) Reliant Energy Europe B.V. (52% interest; 48% Private Netherlands Foreign Utility Company interest owned by Reliant Energy Wholesale (Europe) Limited Company Holdings II C.V. ) Reliant Energy Power Generation Benelux N. V. Limited Netherlands Power Generation Corporation Reliant Energy Financial Trading, B.V. Private Netherlands Energy Trading and Limited Company Marketing Reliant Energy Trading & Marketing, B.V. Private Netherlands Energy Trading and Limited Company Marketing Reliant Energy Trading and Marketing (UK) BV Private Netherlands Energy Trading and Limited Company Marketing APX-Amsterdam Power Exchange (10% interest) Private Netherlands Trading Platform Limited Company BV Antraciet Handelsvereeniging Private Netherlands Dormant Limited Company B.V. Nederlands Elektriciteit Private Netherlands Former Pooling 10

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Administratiekantoor (25% interest)* Limited Company Authority Demkolec B.V. (30% interest) Private Netherlands Environmental Limited Company Initiatives N.V. GKN Limited Netherlands Holding Company (Power Corporation Generation) COVRA B.V. (30% interest) Private Netherlands Minority Interest in Limited Company Power Generation TenneT B.V. Private Netherlands Transmission System Limited Company Operator Electorisk NV (21% interest) Limited Netherlands Captive Insurance Corporation Company GKE BV (16% interest) Private Netherlands Coal Procurement Limited Company Howo GmbH (10% interest) LLC Germany Dormant KEMA NV (10% interest) Limited Netherlands Energy Services and Corporation Consulting B.V. BPA HES-West B.V. Business Park Arnhem B.V. Kema CEBEC Registered Quality c.v.b.a. (50% interest) DUtrain GmbH (60% interest) Geographic Information Technology, Inc. (80% interest) KEMA-Arbodienst B.V. KEMA Consulting Canada Ltd. 11

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS KEMA Consulting Europe B.V. KEMA Consulting GmbH KEMA Consulting, Inc. KEMA-ECC, Inc. KEMA-ETC A/O KEMA-GOST B.V. (50% interest) KEMA-IEV GmbH (60% interest) KEMA Indonesie B. V. KEMA International B.V. KEMA International GmbH Deutschland KEMA Nederland B.V. KEMA Nucleair B.V. KEMA Polska Sp. z.o.o. KEMA-Powertest, Inc. KEMA-Realty LLC KEMA Registered Quality B.V. KEMA Registered Quality Consultants B.V. KEMA Registered Quality Czech Republic spol. r.o. KEMA Registered Quality Hong Kong Ltd. (51% interest) KEMA Registered Quality, Inc. KEMA Registered Quality Italia S.r.l. KEMA Registered Quality Sp. z.o.o. KEMA Technology Czech Republic spol. r.o. KEMA USA, Inc. Macro Corporation PT. KEMA Registered Quality Indonesia PT. KEMA Technology Indonesia 12

STATE OF NAME OF COMPANY ORGANIZATION ORGANIZATION TYPE OF BUSINESS Power Investments BV* Axima BV (45% interest) Private Netherlands Software and Limited Company Information Systems Power Projects BV (50% interest) Private Netherlands Dormant Limited Company Power Services BV Private Netherlands Dormant Limited Company Power Total Maintenance BV (50% interest) Private Netherlands Dormant Limited Company UNA Milieu NV Limited Netherlands Dormant Corporation Ecosun BV (67% interest) Private Netherlands Manufacturer Limited Company Vasim BV (15% interest) Private Netherlands Consulting Limited Company Vliegasunie BV (16% interest) Private Netherlands Fly Ash Disposal Limited Company Reliant Energy CapTrades Holding Corp. Corporation DE Energy Trading Development CapTrades, LP (59.4%; 1% interest owned by Reliant Energy Limited DE Investment - E-Commerce CapTrades GP, LLC) Partnership Reliant Energy Channelview (Delaware) LLC LLC DE Power Generation Project Development and Operation 13

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Reliant Energy Channelview LP (49% interest; 1% interest Limited DE Power Generation owned by Channelview (Texas) LLC) Partnership Reliant Energy Channelview (Texas) LLC LLC DE Power Generation Project Development and Operation Reliant Energy Choctaw County, LLC LLC MS Power Generation Project Development Reliant Energy Colusa County, LLC LLC DE Power Generation Project Development Reliant Energy Construction, LLC LLC DE Administrative and Financing Services Reliant Energy Deer Park, Inc. Corporation DE Power Generation Reliant Energy Reeves County, LLC LLC Gas Storage Reliant Energy Desert Basin, LLC LLC DE Exempt Wholesale Generator Reliant Energy Development Services, Inc. Corporation DE Operations and Maintenance Services Reliant Energy Equipment Company, LLC LLC NV Equipment Purchaser (Energy-Related) Reliant Energy Florida Holdings, LLC LLC DE Holding Company (Power Generation Facilities and Development) Reliant Energy Indian River, LLC LLC DE Exempt Wholesale Generator Reliant Energy New Smyrna Beach, LLC LLC DE Power Generation Project Development Reliant Energy Osceola, LLC LLC DE Exempt Wholesale Generator Reliant Energy Winter Haven, LLC LLC DE Power Generation Development 14

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Reliant Energy Mesa Vista, LLC LLC DE Power Generation Development Reliant Energy Mid-Atlantic Development, Inc. Corporation DE Holding Company (Power Generation Project Development) Reliant Energy Atlantic, LLC LLC DE Power Generation Project Development Reliant Energy Erie West, LLC LLC DE Power Generation Project Development Reliant Energy Gilbert, LLC LLC DE Power Generation Project Development Reliant Energy Hunterstown, LLC LLC DE Power Generation Project Development Reliant Energy Portland, LLC LLC DE Power Generation Project Development Reliant Energy Seward, LLC LLC DE Power Generation Project Development Reliant Energy Titus, LLC LLC DE Power Generation Project Development Reliant Energy Northeast Holdings, Inc. Corporation DE Power Generation and Development Reliant Energy Northeast Generation, Inc. Corporation DE Holding Company (Fuel Provider and Wholesale Power Sellers) Reliant Energy Key/Con Fuels, LLC LLC DE Fuel Provider Keystone Fuels, LLC (16.67% interest) LLC DE Fuel Purchaser Reliant Energy Mid-Atlantic Power Holdings, LLC LLC DE Holding Company (Wholesale Power Sellers) Reliant Energy Maryland Holdings, LLC LLC DE Wholesale Power Seller 15

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Reliant Energy Mid-Atlantic Power Services, Inc. Corporation DE Wholesale Power Seller Reliant Energy New Jersey Holdings, LLC LLC DE Wholesale Power Seller Reliant Energy Northeast Management Company Corporation PA Electric Generation Facilities Operation Reliant Energy Partsco, LLC LLC DE Procurement Services Reliant Energy Power Operations I, Inc. Corporation DE Administrative and Financing Reliant Energy Power Operations II, Inc. Corporation DE Administrative and Financing Reliant Energy Rancho Cucamonga, LLC LLC DE Power Generation Project Development Reliant Energy Renewables, Inc. Corporation DE Holding Company (Power Generation Project Development and Operation) Reliant Energy Renewables Atascocita GP, LLC LLC DE GP of Reliant Energy Renewables Atascocita, LP Reliant Energy Renewables Baytown GP, LLC LLC DE GP of Reliant Energy Renewables Baytown, LP Reliant Energy Renewables Blue Bonnet GP, LLC LLC DE GP of Reliant Energy Renewables Blue Bonnet, LP Reliant Energy Renewables Coastal Plains GP, LLC LLC DE GP of Reliant Energy Renewables Coastal Plains, LP Reliant Energy Renewables Comal County GP, LLC LLC DE GP of Reliant Energy 16

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Renewables Comal County, LP Reliant Energy Renewables Conroe GP, LLC LLC DE GP of Reliant Energy Renewables Conroe, LP Reliant Energy Renewables Eastside GP, LLC LLC DE GP of Reliant Energy Renewables Eastside, LP Reliant Energy Renewables Fort Worth GP, LLC LLC DE GP of Reliant Energy Renewables Fort Worth, LP Reliant Energy Renewables Hillside GP, LLC LLC DE GP of Reliant Energy Renewables Hillside, LP Reliant Energy Renewables Holdings, LLC LLC DE LP of Generation Facilities Development Subsidiaries Reliant Energy Renewables Atascocita, LP (99% Limited DE Generation Facility interest; 1% interest owned by Reliant Energy Partnership Development Renewables Atascocita GP, LLC) Reliant Energy Renewables Baytown, LP (99% interest; Limited DE Generation Facility 1% interest owned by Reliant Energy Renewables Partnership Development Baytown GP, LLC) Reliant Energy Renewables Blue Bonnet, LP (99% Limited DE Generation Facility interest; 1% interest owned by Reliant Energy Partnership Development Renewables Blue Bonnet GP, LLC) Reliant Energy Renewables Coastal Plains, LP (99% Limited DE Generation Facility interest; 1% interest owned by Reliant Energy Partnership Development Renewables Coastal Plains GP, LLC) Reliant Energy Renewables Comal County, LP (99% Limited DE Generation Facility interest; 1% interest owned by Reliant Energy Partnership Development Renewables Comal County GP, LLC) 17

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Reliant Energy Renewables Conroe, LP (99% interest; Limited DE Generation Facility 1% interest owned by Reliant Energy Renewables Partnership Development Conroe GP, LLC) Reliant Energy Renewables Eastside, LP (99% interest; Limited DE Generation Facility 1% interest owned by Reliant Energy Renewables Partnership Development Eastside GP, LLC) Reliant Energy Renewables Fort Worth, LP (99% Limited DE Generation Facility interest; 1% interest owned by Reliant Energy Partnership Development Renewables Fort Worth, LLC) Reliant Energy Renewables Hillside, LP (99% interest; Limited DE Generation Facility 1% interest owned by Reliant Energy Renewables Partnership Development Hillside GP, LLC) Reliant Energy Renewables Lacy Lakeview, LP (99% Limited DE Generation Facility interest; 1% interest owned by Reliant Energy Partnership Development Renewables Lacy Lakeview GP, LLC) Reliant Energy Renewables Pecan Prairie, LP (99% Limited DE Generation Facility interest; 1% interest owned by Reliant Energy Partnership Development Renewables Pecan Prairie GP, LLC) Reliant Energy Renewables Security, LP (99% interest; Limited DE Generation Facility 1% interest owned by Reliant Energy Renewables Partnership Development Security GP, LLC) Reliant Energy Renewables Temple, LP (99% interest; Limited DE Generation Facility 1% interest owned by Reliant Energy Renewables Partnership Development Temple GP, LLC) Reliant Energy Renewables Williamson County, LP Limited DE Generation Facility (99% interest; 1% interest owned by Reliant Energy Partnership Development Renewables Williamson County GP, LLC) Reliant Energy Renewables Lacy Lakeview GP, LLC LLC DE GP of Reliant Energy Renewables Lacy Lakeview, LP 18

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Reliant Energy Renewables Pecan Prairie GP, LLC LLC DE GP of Reliant Energy Renewables Pecan Prairie, LP Reliant Energy Renewables Security GP, LLC LLC DE GP of Reliant Energy Renewables Security, LP Reliant Energy Renewables Temple GP, LLC LLC DE GP of Reliant Energy Renewables Temple, LP Reliant Energy Renewables Williamson County GP, LLC LLC DE GP of Reliant Energy Renewables Williamson County, LP Reliant Energy Sabine (Delaware), Inc. Corporation DE LP of Sabine Cogen, LP Sabine Cogen, LP (49% interest, 1% interest owned by Limited DE Power Generation Reliant Energy Sabine (Texas), Inc.) Partnership Reliant Energy Sabine (Texas), Inc. Corporation DE GP of Sabine Cogen, LP Reliant Energy Shelby Holding Corp. Corporation DE LP of Reliant Energy Shelby I, LP and Reliant Energy Shelby II, LP Reliant Energy Shelby I, LP (99% interest; 1% interest Limited DE Power Generation owned by Reliant Energy Shelby Development Corp.) Partnership Project Development and Operation Reliant Energy Shelby II, LP (99% interest, 1% interest Limited DE Power Generation owned by Reliant Energy Shelby Development Corp.) Partnership Project Development and Operation Reliant Energy Shelby County, LP (99% interest, 1% Limited DE Exempt Wholesale interest owned by Reliant Energy Shelby I, LP) Partnership Generator 19

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Reliant Energy Shelby County II, LP (99% interest; 1% Limited DE Power Generation interest owned by Reliant Energy Shelby I, LP) Partnership Project Development and Operation Reliant Energy Shelby Development Corp. Corporation DE GP of Reliant Energy Shelby I, LP and Reliant Energy Shelby II, LP Reliant Energy Signal Peak, LLC LLC DE Power Generation Development Reliant Energy Sunrise, LLC LLC DE Inactive Orion Power Holdings, Inc. Corporation DE Holding Company (Merchant Power Generation) Midwest Ceredo II Corporation* Corporation DE Inactive Midwest Ceredo Corporation* Corporation DE Inactive Ceredo Capacity, LLC* LLC DE Inactive Orion Power Atlantic, Inc. Corporation DE Exempt Wholesale Generator Project Company Orion Power Atlantic LLC LLC FL Parent Company of Orion Power Atlantic Ltd. Orion Power Atlantic Ltd. (99.99% interest; .01% Limited FL Exempt Wholesale interest owned by Orion Power Atlantic, LLC) Partnership Generator Project Company Orion Power Development Company, Inc. Corporation DE Holding Company (Power Plant Development Projects) OPD Group, Inc. Corporation DE Parent Company (Merchant Power Plant Development Projects) 20

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Beaver River, LLC LLC DE Project Company (Project Discontinued) Free State Electric, LLC LLC DE Project Company Grane Creek, LLC LLC DE Project Company (Project Discontinued) Midatlantic Liberty Corporation Corporation DE Owns Interest in Liberty Electric PA, LLC Midatlantic Liberty Member Corporation Corporation DE Owns Interest in Liberty Electric PA, LLC Midatlantic Liberty II Corporation Corporation DE Owns Interest in Liberty Electric PA, LLC Midatlantic Liberty Member II Corporation Corporation DE Owns Interest in Liberty Electric PA, LLC Liberty Electric PA, LLC (1% interest owned by Midatlantic LLC DE Parent Company of Liberty Liberty Corporation; 49% interest owned by Midatlantic Electric Power, LLC Liberty Member Corporation; 1% interest owned by Midatlantic Liberty II Corporation; 49% interest owned by Midatlantic Liberty Member II Corporation) Liberty Electric Power, LLC LLC DE Exempt Wholesale Generator Orion Power Marketing and Supply, Inc. Corporation DE Power Marketing Orion Power MidWest GP, Inc. Corporation DE GP of Orion Power MidWest, L.P. Orion Power MidWest LP, Inc. Corporation DE LP of Orion Power MidWest, L.P. Orion Power MidWest, L.P. (99% interest; 1% interest Limited DE Exempt Wholesale owned by Orion Power MidWest GP, Inc.) Partnership Generator 21

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION Twelvepole Creek, LLC LLC DE Exempt Wholesale Generator Orion Power New York GP, Inc. Corporation DE GP of Orion Power New York, L.P., Astoria Generating Company, L.P., Erie Boulevard Hydropower, LP, and Carr Street Generating Station, LP Orion Power New York, L.P. (99.80% interest; .02% interest Limited DE LP of Astoria Generating owned by Orion Power New York LP, Inc.) Partnership Company, L.P., Erie Boulevard Hydropower, LP, and Carr Street Generating Station, LP Astoria Generating Company, L.P. (99% interest; 1% Limited DE Exempt Wholesale interest owned by Orion Power New York GP, Inc.) Partnership Generator Erie Boulevard Hydropower, LP (99% interest 1% Limited DE Exempt Wholesale interest owned by Orion Power New York GP, Inc.) Partnership Generator Carr Street Generating Station, LP (99% interest, 1% Limited DE Exempt Wholesale interest owned by Orion Power New York GP, Inc.) Partnership Generator Orion Power New York LP, Inc. Corporation DE LP of Orion Power New York, L.P. Orion Power New York GP II, Inc. Corporation DE Inactive Orion Power Operating Services, Inc. Corporation DE Parent Company of Power Plant Operation and Service Subsidiaries OPOS MidAtlantic, Inc. Corporation DE Parent Company of Power Plant Operation 22

NAME OF COMPANY ORGANIZATION STATE OF TYPE OF BUSINESS ORGANIZATION (and Fly Ash Disposal) Subsidiaries Orion Power Operating Services Midwest, Inc. Corporation DE Power Plant Operation Orion Power Operating Services Astoria, Inc. Corporation DE Power Plant Operation Orion Power Operating Services Coldwater, Inc. Corporation DE Power Plant Operation Orion Power Operating Services Carr Street, Inc. Corporation DE Power Plant Operation Midwest Ash Disposal, Inc. Corporation DE Fly Ash Disposal * Entity is in the process of being dissolved. ** Investment is in the process of being divested. - ---------- (1) Substantially all assets sold in first quarter of 2002. (2) Substantially all assets sold in first quarter of 2002. (3) Substantially all assets sold in first quarter of 2002. 23