EXHIBIT 21 CALENERGY COMPANY, INC. SUBSIDIARIES AND JOINT VENTURES Corporations: COSO HOTSPRINGS INTERMOUNTAIN POWER, INC. Delaware CHINA LAKE OPERATING COMPANY Delaware COSO TECHNOLOGY CORPORATION Delaware COSO FUNDING CORP. Delaware CHINA LAKE GEOTHERMAL MANAGEMENT COMPANY Delaware CHINA LAKE PLANT SERVICES, INC. California COSO HOTSPRINGS OVERLAND POWER, INC. Delaware CE GEOTHERMAL, INC. Delaware WESTERN STATES GEOTHERMAL COMPANY Delaware INTERMOUNTAIN GEOTHERMAL COMPANY Delaware CE CIS-FSU, Inc. Delaware CALENERGY DEVELOPMENT CORPORATION Delaware CALIFORNIA ENERGY YUMA CORPORATION Utah ROSE VALLEY PROPERTIES, INC. Delaware CBE ENGINEERING CO. California CE EXPLORATION COMPANY Delaware CE NEWBERRY, INC. Delaware CE HUMBOLDT, INC. Delaware CALENERGY INTERNATIONAL SERVICES, INC. Delaware AMERICAN PACIFIC FINANCE COMPANY Delaware CALIFORNIA ENERGY GENERAL CORPORATION Delaware GILBERT/CBE INDONESIA L.L.C. Nebraska CE INTERNATIONAL INVESTMENTS, INC. Delaware CE MAHANAGDONG LTD. Bermuda CE LUZON GEOTHERMAL POWER COMPANY, INC. Philippines CE PHILIPPINES LTD. Bermuda ORMOC CEBU LTD. Bermuda CE CEBU GEOTHERMAL POWER COMPANY, INC. Philippines CE INDONESIA LTD. Bermuda HIMPURNA CALIFORNIA ENERGY LTD. Bermuda CE COLOMBIA LTD. Bermuda BALI ENERGY LTD. Bermuda CE CASECNAN LTD. Bermuda CE LATIN AMERICA LTD. Bermuda PATUHA POWER, LTD. Bermuda CE SINGAPORE LTD. Bermuda CALENERGY INTERNATIONAL LTD. Bermuda CE CASECNAN WATER AND ENERGY COMPANY, INC. Philippines CE BALI LTD. Bermuda CE IJEN LTD. Bermuda CE ASIA LTD. Bermuda CE OVERSEAS LTD. Bermuda MAGMA POWER COMPANY Nevada DESERT VALLEY COMPANY California VULCAN POWER COMPANY Nevada CALENERGY OPERATING CORPORATION Delaware SALTON SEA POWER COMPANY Nevada IMPERIAL MAGMA Nevada MAGMA LAND COMPANY I Nevada MAGMA GENERATING COMPANY II Nevada MAGMA GENERATING COMPANY I Nevada PEAK POWER CORPORATION California FISH LAKE POWER COMPANY Delaware CALIFORNIA ENERGY MANAGEMENT COMPANY Delaware SALTON SEA FUNDING CORPORATION Delaware SALTON SEA ROYALTY COMPANY Delaware TONGONAN POWER INVESTMENT, INC. Philippines MAGMA NETHERLANDS B.V. Netherlands NORMING INVESTMENTS B.V. Netherlands CALIFORNIA ENERGY RETAIL COMPANY, INC. Delaware CALENERGY IMPERIAL VALLEY COMPANY, INC. Delaware SLUPO I B.V. Netherlands BN GEOTHERMAL INC. Delaware CONEJO ENERGY COMPANY California NIGUEL ENERGY COMPANY California SAN FELIPE ENERGY COMPANY California BIOCLEAN FUELS INC. Delaware CE/FS HOLDING COMPANY, INC. Delaware CALENERGY BCF, INC. Delaware CE ALBERTA BIOCLEAN, INC. Delaware AMERICAN PACIFIC FINANCE COMPANY II Delaware FALCON SEABOARD RESOURCES, INC. Texas FALCON SEABOARD ENERGY CORPORATION Texas FALCON SEABOARD OIL COMPANY Texas FALCON SEABOARD PIPELINE CORPORATION Texas FALCON SEABOARD POWER CORPORATION Texas FALCON SEABOARD GAS COMPANY Texas POWER RESOURCES, INC. Texas BIG SPRING PIPELINE COMPANY Texas SECI HOLDINGS, INC. Delaware FALCON POWER OPERATING COMPANY Texas NORCON HOLDINGS, INC. Delaware SARANAC ENERGY COMPANY, INC. Delaware NORTHERN CONSOLIDATED POWER, INC. Delaware NORTH COUNTRY GAS PIPELINE CORPORATION New York CE POWER, INC. Delaware CE ELECTRIC, INC. Delaware CE ELECTRIC UK plc England/Wales NORTHERN ELECTRIC PLC England/Wales NORTHERN ELECTRIC GENERATION LIMITED England/Wales NORTHERN ELECTRIC (OVERSEAS HOLDINGS) LIMITED England/Wales NORTHERN ELECTRIC PROPERTIES LIMITED England/Wales NORTHERN ELECTRIC FINANCE PLC England/Wales NORTHERN TRACING AND COLLECTION SERVICES LIMITED England/Wales GAS UK LIMITED England/Wales CALENERGY GAS (HOLDINGS) LIMITED England/Wales NORTHERN ELECTRIC SHARE SCHEME TRUSTEE LIMITED England/Wales NORTHERN TRANSPORT FINANCE LIMITED England/Wales NORTHERN ELECTRIC RETAIL LIMITED England/Wales NORTHERN ELECTRIC DISTRIBUTION LIMITED England/Wales NORTHERN ELECTRIC SUPPLY LIMITED England/Wales NORTHERN METERING SERVICES LIMITED England/Wales NORTHERN UTILITY SERVICES LIMITED England/Wales NORTHERN ELECTRIC TELECOM LIMITED England/Wales NORTHERN ELECTRIC TRANSPORT LIMITED England/Wales NORTHERN INFORMATION SYSTEMS LIMITED England/Wales NORTHERN ELECTRIC TRAINING LIMITED England/Wales NORTHERN ELECTRIC GENERATION (TPL) LIMITED England/Wales NORTHERN ELECTRIC GENERATION (CPS) LIMITED England/Wales NORTHERN ELECTRIC GENERATION (NPL) LIMITED England/Wales NORTHERN ELECTRIC GENERATION (PEAKING) LIMITED England/Wales NORTHERN ELECTRIC INSURANCE SERVICES LIMITED Isle of Man CALENERGY GAS (UK) LIMITED England/Wales CE INDONESIA GEOTHERMAL, INC. Delaware CALENERGY MINERALS, INC. Delaware CE INDONESIA FUNDING CORP. Delaware CEABC CO. Delaware CEXYZ CO. Delaware CE ELECTRIC (NY), INC. New York NEPTUNE POWER LTD England/Wales CALENERGY GAS (POLSKA) SP. Z O.O. Poland CE (BERMUDA) FINANCING LTD. Bermuda CALENERGY GAS (PIPELINES) LIMITED England/Wales POLSKA POWER SP. Z O.O. Poland SALTON SEA POWER L.L.C. Delaware KIEWIT ENERGY COMPANY Delaware KIEWIT ENERGY PACIFIC HOLDINGS CORP. Delaware KIEWIT ENERGY U.K. INC. Delaware KIEWIT ENERGY INTERNATIONAL (BERMUDA) LTD. Bermuda CE SALTON SEA INC. Delaware AURORA I, L.L.C. Delaware CE AURORA I, INC. Delaware NORTHERN AURORA, INC. Delaware CALENERGY MINERALS LLC Delaware Joint Ventures/Partnerships: COSO ENERGY DEVELOPERS California COSO FINANCE PARTNERS California COSO POWER DEVELOPERS California COSO TRANSMISSION LINE PARTNERS California COSO FINANCE PARTNERS II California COSO LAND COMPANY California CHINA LAKE JOINT VENTURE California COSO GEOTHERMAL COMPANY California YUMA COGENERATION ASSOCIATES Utah GILBERT/CBE, L.P. Nebraska VULCAN/BN GEOTHERMAL POWER COMPANY Nevada LEATHERS, L.P. California ELMORE, L.P. California DEL RANCH, L.P. (HOCH) California SALTON SEA BRINE PROCESSING, L.P. California SALTON SEA POWER GENERATION L.P. California ALTO PEAK POWER COMPANY Philippines VISAYAS GEOTHERMAL POWER COMPANY Philippines SARANAC POWER PARTNERS, L.P. Delaware NORCON POWER PARTNERS, L.P. Delaware CE ELECTRIC UK HOLDINGS England/Wales VIKING POWER LTD England/Wales SEAL SANDS NETWORK LIMITED England/Wales CE ELECTRIC UK FUNDING COMPANY England/Wales