1 EXHIBIT 21 Subsidiaries of Calpine Corporation as of December 31, 2000 Set forth below are the names of certain subsidiaries, at least 50% owned, directly or indirectly, of Calpine Corporation as of December 31, 2000, unless otherwise indicated. Certain subsidiaries which when considered in the aggregate would not constitute a significant subsidiary, are omitted from the list below. - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ 3044017 Nova Scotia Company Nova Scotia 100% 899510 Alberta Ltd. Alberta 100% Acadia Power Partners, LLC Delaware 50% Airport Cogen Corp. Delaware 100% Anacapa Land Company, LLC Delaware 100% Anderson Springs Energy Company California 100% Androscoggin Energy, Inc. Illinois 100% Auburndale Power Partners, L.P. Delaware 100% Augusta Energy Delaware 100% Aviation Funding Corporation Delaware 100% Bayou Verret Energy LLC Delaware 100% Baytown Energy Center, LP Delaware 100% Bellingham Cogen, Inc. California 100% Bethpage Cogeneration Limited Partnership Delaware 100% Bethpage Fuel Management Inc. Delaware 100% Broad River Energy LLC Delaware 100% Broad River Investors LLC Delaware 100% Calistoga Geothermal Partners, LP Delaware 100% Calpine Acadia Holdings, LLC Delaware 100% Calpine Agnews, Inc. California 100% Calpine Auburndale, Inc. Delaware 100% Calpine Baytown Energy Center GP, LLC Delaware 100% Calpine Baytown Energy Center LP, LLC Delaware 100% Calpine C*Power Inc. Delaware 100% Calpine Calgary Energy Centre Ltd. Alberta 100% Calpine Calgary, Inc. Delaware 100% Calpine Calistoga Holdings, LLC Delaware 100% Calpine Canada Power Holdings Ltd. Alberta 100% Calpine Canada Power, Inc. Delaware 100% Calpine Canada TriGas, Ltd. Alberta 100% Calpine Capital Trust Delaware 100% Calpine Capital Trust II Delaware 100% Calpine Capital Trust III Delaware 100% Calpine CCFC GP, Inc. Delaware 100% Calpine CCFC Holdings, Inc. Delaware 100% Calpine CCFC II Holdings, Inc. Delaware 100% Calpine CCFC LP, Inc. Delaware 100% Calpine Central, Inc. Delaware 100% Calpine Central, L.P. Delaware 100% - ------------------------------------------------------------------------------------------------------------------------ 2 - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ Calpine Central-Texas, Inc. Delaware 100% Calpine Channel Energy Center GP, Inc. Delaware 100% Calpine Channel Energy Center GP, LLC Delaware 100% Calpine Channel Energy Center LP, Inc. Delaware 100% Calpine Channel Energy Center LP, LLC Delaware 100% Calpine Cogeneration Corporation Delaware 100% Calpine Construction Finance Company I, Inc. Delaware 100% Calpine Construction Finance Company II, Inc. Delaware 100% Calpine Construction Finance Company, L.P. Delaware 100% Calpine Construction Management Company, Inc. Delaware 100% Calpine Coos Development Company, Inc. California 100% Calpine Decatur Pipeline, Inc. Delaware 100% Calpine Decatur Pipeline, L.P. Delaware 100% Calpine Deer Park GP, LLC Delaware 100% Calpine Deer Park LP, LLC Delaware 100% Calpine Dighton Inc. Delaware 100% Calpine East Acquisition Corporation Delaware 100% Calpine East Fuels, Inc. Delaware 100% Calpine Eastern Corporation Delaware 100% Calpine Edinburg, Inc. Delaware 100% Calpine Energy Kennedy Airport Inc. Delaware 100% Calpine Energy Kennedy Operators Inc. New York 100% Calpine Energy KIA Inc. New York 100% Calpine Energy Long Island Inc. Delaware 100% Calpine Energy Power Inc. Delaware 100% Calpine Energy Services Canada Ltd. Delaware 100% Calpine Energy Services, L.P. Delaware 100% Calpine Energy Stony Brook Inc. Delaware 100% Calpine Energy Stony Brook Operators Inc. New York 100% Calpine Finance Company Delaware 100% Calpine Freestone Pipeline GP, Inc. Delaware 100% Calpine Freestone, Inc. Delaware 100% Calpine Fuels Corporation California 100% Calpine Fuels Texas Corporation Delaware 100% Calpine Gas Company Delaware 100% Calpine/Gentex Lost Pines, L.P. Delaware 50% Calpine Geysers Company, L.P. Delaware 100% Calpine Gilroy 1, Inc. Delaware 100% Calpine Gilroy 2, Inc. Delaware 100% Calpine Gilroy Cogen, L.P. Delaware 100% Calpine Gordonsville, Inc. Delaware 100% Calpine Greenleaf Holdings, Inc. Delaware 100% Calpine Greenleaf, Inc. Delaware 100% Calpine Hermiston, Inc. Delaware 100% Calpine Hidalgo Design, L.P. Delaware 100% - ------------------------------------------------------------------------------------------------------------------------ 3 - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ Calpine Hidalgo Energy Center, L.P. Delaware 100% Calpine Hidalgo Holdings, Inc. Delaware 100% Calpine Hidalgo, Inc. Delaware 100% Calpine Jersey Cogen, Inc. Delaware 100% Calpine Kennedy Airport, Inc. New York 100% Calpine KIA, Inc. New York 100% Calpine King City 1, Inc. Delaware 100% Calpine King City 2, Inc. Delaware 100% Calpine King City Cogen Inc. California 100% Calpine King City Cogen, LLC California 100% Calpine Leasing Inc. Delaware 100% Calpine Long Island, Inc. Delaware 100% Calpine Lost Pines Operations, Inc. Delaware 100% Calpine Magic Valley Pipeline, Inc. Delaware 100% Calpine Magic Valley Pipeline, L.P. Delaware 100% Calpine Marketing, LLC Delaware 100% Calpine Monterey Cogeneration, Inc. California 100% Calpine Morris, LLC Delaware 100% Calpine MVG, Inc. Delaware 100% Calpine MVP, Inc. Delaware 100% Calpine Natural Gas Company Delaware 100% Calpine Newark, Inc. Delaware 100% Calpine Northeast Marketing, Inc. Delaware 100% Calpine Oneta Power I, LLC Delaware 100% Calpine Oneta Power II, LLC Delaware 100% Calpine Oneta Power, L.P. Delaware 100% Calpine Operating Plant Services, Inc. California 100% Calpine Parlin, Inc. Delaware 100% Calpine Pasadena Cogeneration, Inc. Delaware 100% Calpine Philadelphia, Inc. Delaware 100% Calpine Pittsburgh, LLC Delaware 100% Calpine Pittsburg, Inc. Delaware 100% Calpine Power Company California 100% Calpine Power Equipment, LP Texas 100% Calpine Power Management, Inc. Delaware 100% Calpine Power Services Company California 100% Calpine PowerAmerica, Inc. Delaware 100% Calpine PowerAmerica, LP Delaware 100% Calpine Project Investments, Inc. California 100% Calpine Pryor, Inc. Delaware 100% Calpine Rumford Cogeneration Inc. Delaware 100% Calpine Rumford, Inc. Delaware 100% Calpine Schuylkill, Inc. Delaware 100% Calpine Securities Company, L.P. Delaware 100% Calpine Siskiyou Geothermal Partners, L.P. California 100% - ------------------------------------------------------------------------------------------------------------------------ 4 - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ Calpine Sonoma, Inc. California 100% Calpine South Point, Inc. Delaware 100% Calpine Stony Brook Operators, Inc. New York 100% Calpine Stony Brook, Inc. New York 100% Calpine Sumas, Inc. California 100% Calpine Sutter, Inc. Delaware 100% Calpine Texas Cogeneration, Inc. Delaware 100% Calpine Texas Pipeline GP, Inc. Delaware 100% Calpine Texas Pipeline LP, Inc. Delaware 100% Calpine Texas Pipeline, L.P. Delaware 100% Calpine Thermal Power, Inc. California 100% Calpine Tiverton I, Inc. Delaware 100% Calpine Tiverton, Inc. Delaware 100% Calpine Tiverton, L.P. Delaware 100% Calpine University Power, Inc. Delaware 100% Calpine Vapor, Inc. California 100% Calpine Westbrook, Inc. Delaware 100% Calpine-EMI Marketing LLC Delaware 100% Calpine/Gentex Lost Pines Operations, L.P. Delaware 100% Carville Energy LLC Delaware 100% CCFC Development Company, LLC Delaware 100% CCFC Equipment Finance Company, LLC Delaware 100% CCFC II Development Company, LLC Delaware 100% CCFC II Equipment Finance Company, LLC Delaware 100% CCFC II Equipment Finance Holdings, LLC Delaware 100% CCFC II Project Equipment Finance Company One, LLC 100% CGC Dighton, LLC Delaware 100% Channel Energy Center, LP Delaware 100% Clear Lake Cogeneration Limited Partnership Delaware 100% Cloverdale Geothermal Partners, L.P. Delaware 100% Columbia Energy LLC Delaware 100% Corpus Christi Cogeneration L.P. Delaware 100% CPN Acadia, Inc. Delaware 100% CPN Aidlin, Inc. Delaware 100% CPN Auburndale, Inc. Delaware 100% CPN Bayonne, Inc. Delaware 100% CPN Berks Generation, Inc. Delaware 100% CPN Berks, LLC Delaware 100% CPN Calistoga, LLC Delaware 100% CPN Clear Lake, Inc.. Delaware 100% CPN Decatur Pipeline, Inc. Delaware 100% CPN Delta Holdings LLC Delaware 100% CPN Delta, Inc. Delaware 100% CPN East Fuels Inc. Delaware 100% - ------------------------------------------------------------------------------------------------------------------------ 5 - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ CPN East Fuels, LLC Delaware 100% CPN Energy Services GP, Inc. Delaware 100% CPN Energy Services LP, Inc. Delaware 100% CPN Freestone, Inc. Delaware 100% CPN Funding, Inc. Delaware 100% CPN Gas Marketing Company Delaware 100% CPN Haywood Holdings, LLC Delaware 100% CPN Hermiston, Inc. Delaware 100% CPN Insurance Corporation Hawaii 100% CPN Morris, Inc. Delaware 100% CPN Osprey, Inc. Delaware 100% CPN Oxford, Inc. Delaware 100% CPN Pipeline Company Delaware 100% CPN Pleasant Hill Operating, LLC Delaware 100% CPN Pleasant Hill, LLC Delaware 100% CPN Production Company Delaware 100% CPN Pryor Funding Corporation Delaware 100% CPN Quincy Holdings, LLC Colorado 100% CPN Sheridan, Inc. Delaware 100% CPN Texas Central Fuels, L.P. Texas 100% CPN Westbrook I, Inc. Delaware 100% De Pere Energy L.L.C. Wisconsin 100% DEC-LMEC Pipeline, LLC Delaware 100% Decatur Energy Center LLC Delaware 100% Deer Park Energy Center, L.P. Delaware 100% DEI Texas, Inc. Virginia 100% Delta Energy Center LLC Delaware 50% Dighton Power Associates Limited Partnership Massachusetts 100% East Altamont Energy Center, LLC Delaware 100% EMI/Tiverton, Inc. Delaware 100% Energypro Construction Partners Delaware 100% Enron Cogeneration One Company Delaware 100% Fond Du Lac Energy Center, LLC Delaware 100% Freestone Power Generation LP Texas 100% Fremont Energy Center LLC Delaware 100% Gas Energy Cogeneration Inc. Delaware 100% Gas Energy Inc. Delaware 100% GATX/Calpine-Agnews, Inc. Delaware 100% GEC Bethpage Inc. Delaware 100% Geothermal Energy Partners California 100% Geysers Finance Company Delaware 100% Geysers Power Co. Delaware 100% Geysers Power Company II, LLC Delaware 100% Geysers Power Company, LLC Delaware 100% Geysers Power I Company Delaware 100% - ------------------------------------------------------------------------------------------------------------------------ 6 - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ Gordonsville Energy, L.P. Delaware 50% Greenleaf Unit One Associates, Inc. California 100% Greenleaf Unit Two Associates, Inc. California 100% Groveton Energy LLC Delaware 100% Hammond Energy LLC Delaware 100% Haywood Energy Center, LLC Delaware 100% Healdsburg Energy Company, L.P. Delaware 100% Hermiston Power Partnership Delaware 100% Idlewild Fuel Management Corp. Delaware 100% JMC Bethpage, Inc. Delaware 100% JOQ Canada, Inc. Delaware 100% Lawrence Energy Center, LLC Delaware 100% Livermore Falls Energy LLC Delaware 100% Lone Oak Energy Center, LLC Delaware 100% Los Medanos Energy Center LLC Delaware 100% Magic Valley Pipeline, L.P. Delaware 100% MEP Investments, LLC Delaware 100% MEP Pleasant Hill, LLC Delaware 50% Moapa Paiute Energy Center, LLC Delaware 100% Mobile Energy LLC Delaware 100% Modoc Power, Inc. California 100% Morgan Energy Center LLC Delaware 100% - ------------------------------------------------------------------------------------------------------------------------ 7 - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ Mount Hoffman Geothermal Company, L.P. Delaware 100% Mt. Vernon Energy LLC Delaware 100% Nissequogue Cogen Partners Delaware 100% Northern Cogeneration One Company Delaware 100% Northern Cogeneration Three Company Delaware 100% Northwest Cogeneration, Inc. California 100% Nueces Bay Energy LLC Delaware 100% O'Brien (Philadelphia) Cogeneration, Inc. Delaware 100% O'Brien Biogas Producing (Suffolk), Inc. Delaware 100% O'Brien Cogeneration Inc. Delaware 100% O'Brien Energy Services Company Delaware 100% O'Brien Environmental Energy, Inc. Delaware 100% O.L.S. Energy-Agnews, Inc. Delaware 100% Odyssey Land Acquisition Company Delaware 100% OES, Inc. Delaware 100% Oklahoma Loan Acquisition Corp. Delaware 100% Pastoria Energy Center, LLC Delaware 100% PEC Energy Marketing, Inc. Delaware 100% Pine Bluff Energy, LLC Delaware 66.67% Polsky Energy Corporation Delaware 100% Polsky Energy Corporation of Maine, Inc. Delaware 100% Polsky SCQ Services, Inc. Delaware 100% Portsmouth Leasing Corp. Delaware 100% Power Investors, L.L.C. Delaware 100% QMC Resources Canada Corp. Nova Scotia 100% Quincy Energy Center, LLC Delaware 100% Quintana Canada Holdings, LLC Delaware 100% Quintana Mineral (USA) Inc. Delaware 100% Reliability 2000 LLC Delaware 100% RockGen Energy LLC Delaware 100% Rumford Power Associates, L.P. Delaware 100% Russell City Energy Center, LLC Delaware 100% Santa Rosa Energy Company California 100% Santa Rosa Energy LLC Delaware 100% Silverado Geothermal Resources, Inc. California 100% SkyGen Energy Holdings LLC Delaware 100% SkyGen Energy LLC Delaware 100% SkyGen Energy Marketing LLC Delaware 100% SkyGen Gas Marketing LLC Delaware 100% SkyGen GulfCoast Energy LLC Delaware 100% SkyGen Investors LLC Delaware 100% SkyGen Project Holdings LLC Delaware 100% SkyGen Services, Inc. Delaware 100% SkyGen SouthCoast Investors LLC Delaware 100% SMO Bethpage, Inc. Delaware 100% - ------------------------------------------------------------------------------------------------------------------------ 8 - ------------------------------------------------------------------------------------------------------------------------ Entity Jurisdiction Ownership Interest - ------------------------------------------------------------------------------------------------------------------------ Sonoma Geothermal Partners, L.P. Delaware 100% St. Francisville Energy LLC Delaware 100% Stony Brook Cogeneration, Inc. Delaware 100% Stony Brook Fuel Management Corp. Delaware 100% Suffolk Biogas Inc. Delaware 100% Sumas Cogen Company, L.P. Delaware 70% Summer Power Source, LLC Delaware 100% Sutter Dryers, Inc. California 100% TBG Cogen Partners Delaware 100% Texas City Cogeneration, L.P. Delaware 100% Texas Cogeneration Company Delaware 100% Texas Cogeneration One Company Delaware 100% Texas Cogeneration Three, Inc. Delaware 100% Thermal Power Company Delaware 100% Tiverton Power Associates Limited Partnership Delaware 100% Towantic Energy, L.L.C. Delaware 100% TriGas Exploration Ltd. Alberta 100% Tuscarora Energy Corp. Delaware 100% Venture Acquisition Company Delaware 100% Versailles Energy LLC Delaware 100% Warnerville Energy Center, LLC Delaware 100% Washington Parish Energy Center, LLC Delaware 100% Wawayanda Energy Center, LLC Delaware 100% Westbrook L.L.C. Delaware 100% Whatcom Cogeneration Partners, L.P. Delaware 100% Wisconsin River Energy, LLC Delaware 100% Zion Energy LLC Delaware 100% - ------------------------------------------------------------------------------------------------------------------------