1
EXHIBIT 21(a)
SUBSIDIARIES OF CMS ENERGY CORPORATION
At December 31, 1999
[Numbers on left are Dun & Bradstreet hierarchy (tier level) indicators.]
Subsidiary Name Jurisdiction
of Formation
01 CMS Enterprises Company Michigan
02 CMS Capital Corp. Michigan
03 CMS Capital Financial Services, Inc. Michigan
04 First Utility Finance, Inc. Michigan
02 CMS Comercializadora de Energia S.A.(99%) Argentina
02 CMS Electric and Gas Company Michigan
03 CMS Netherlands Funding Company Michigan
04 Notera Holding B.V. Netherlands
03 CMS Rio Grande de Sul Ltda Brazil
03 CMS Venezuela, S.A. Venezuela
03 Compania de Inversiones en Energia Electrica S.A. (CIEESA) Argentina
04 Distribuidora de Electricidad S.A. (99%) Argentina
04 Inversora en Distribucion de Entre Rios S.A.(53.5%) Argentina
05 Empresa Distribuidora de Electricidad de Entre Rios S.A. Argentina
04 Sociedad Inversora en Distribucion de Electricidad S.A. (60%) Argentina
04 Sociedad Inversora y Distribucion de Electricidad S.A. (57%) Argentina
03 ENELMAR, S.A. (90%) Venezuela
04 Sistema Electrico Nueva Esparta C.A. ("Seneca") (70%) Venezuela
03 Financial Joint Venture, L.L.C. (99%) Michigan
04 International Investments, Inc. Michigan
05 CMS Brazil Energia Ltda. Brazil
06 Companhia Forca E Luz Cataguazes-Leopoldina (21.56%) Brazil
06 Companhia Paulista de Energia Electrica S.A. (95.83%) Brazil
07 Companhia Sul Paulista de Energia S.A. (87.27%) Brazil
08 Companhia Jaguari de Energia S.A. (79.99%) Brazil
09 Companhia Luz E Forca de Mococa S.A.(22.71%) Brazil
06 GIPAR, S.A (49.9%) Brazil
06 Itacatu, S.A. (0.41%) Brazil
07 GIPAR, S.A (50.1%) Brazil
08 Companhia Forca E Luz Cataguazes-Leopoldina (51%) Brazil
07 Companhia Forca E Luz Cataguazes-Leopoldina (9.18%) Brazil
08 Empresa Energetica De Sergipe S.A. (12.18%) Brazil
08 Energisa S.A. (87.24%) Brazil
09 Empresa Energetica De Sergipe S.A. (84%) Brazil
06 CMS Distribuidora Ltda. Brazil
07 Energisa S.A. (4.92%) Brazil
02 CMS Energy Asia Private Limited Singapore
03 CMS Energy India Development Company Private Limited India
02 CMS Energy South America Company (CESA) Cayman Islands
03 CMS Empreendimentos Ltda Brazil
03 CMS Enterprises Development Company S.A. (CEDC) Argentina
2
02 CMS Energy UK Limited United Kingdom
02 CMS Enterprises Development, L.L.C. Michigan
02 CMS Gas Transmission and Storage Company Michigan
03 AMPCO Marketing, LLC (50%) Michigan
03 AMPCO Services, LLC (50%) Michigan
03 Atlantic Methanol Capital Company (50%) Cayman Islands
03 CMS Antrim Gas Company Michigan
03 CMS Field Services, Inc. Michigan
04 Bighorn Gas Gathering, LLC (50%) Delaware
04 Bradshaw Energy LLC (97.5%) Oklahoma
04 CBC/Leon Limited Partnership (89%) Oklahoma
05 Bright Star Partnership (4.57%) Oklahoma
04 Cherokee Gas Processing LLC (92%) Oklahoma
04 CMS Pipeline Company, LLC (99%) Oklahoma
04 Continental Gas Processing, LLC (99%) Oklahoma
04 Continental Holdings Company Oklahoma
05 Bighorn Gas Gathering, LLC (1%) Delaware
05 CMS Pipeline Company, LLC (1%) Oklahoma
05 Continental Gas Processing, LLC (1%) Oklahoma
05 Continental Hydrocarbons, LLC (1%) Oklahoma
05 Continental Laverne Gas Processing, LLC (1%) Oklahoma
05 Continental Natural Gas Gathering, LLC (1%) Oklahoma
05 Continental/Taurus Energy Company, LP (1%) Oklahoma
04 Continental Hydrocarbons, LLC (99%) Oklahoma
04 Continental Laverne Gas Processing, LLC (99%) Oklahoma
04 Continental Natural Gas Gathering, LLC (99%) Oklahoma
04 Continental/Oklahoma Natural Gas Gathering, LLC Oklahoma
05 Foss Joint Venture (30%)
04 Continental/Taurus Holdings Company, LLC Oklahoma
05 Continental/Taurus Energy Company, LP (99%) Oklahoma
04 Fort Union Gas Gathering, LLC (33.33%) Delaware
04 Heritage Gas Gathering LLC Oklahoma
05 Tekas Pipeline, LLC Delaware
04 Hillsboro Gas Gathering System (23.7064%)
04 Laubhan Friesen Gas Gathering System (41%)
04 Leon Limited Partnership I (50%) Oklahoma
05 Bright Star Partnership (5.43%) Oklahoma
04 Moody Gas Gathering System (57.1632%)
04 Roaring Creek Gas Services LLC Oklahoma
05 Cherokee Gas Processing LLC (8%) Oklahoma
04 Warrel Gas Gathering System (43.65%)
03 CMS Gas Argentina Company Cayman Islands
04 Aguas de Chile Limitada (0.01%) Chile
04 Compania de Inversiones CMS Energy Chile Limitada (1%) Chile
04 Transportadora de Gas del Norte S.A.(TGN) (29.4%) Argentina
03 CMS Goldfields Gas Transmission Company (Inactive) Michigan
03 CMS Grands Lacs Holding Company Michigan
03 CMS Jackson Pipeline Company Michigan
03 CMS Marysville Gas Liquids Company Michigan
04 Marysville Fractionation Partnership (51%) Michigan
04 St. Clair Underground Storage Partnership (51%) Michigan
03 CMS Methanol Company Cayman Islands
04 Atlantic Methanol Associates LLC (50%) Cayman Islands
3
05 Atlantic Methanol Production Company LLC (90%) Cayman Islands
03 CMS Saginaw Bay Company Michigan
03 CMS Saginaw Bay Lateral Company Michigan
03 CMS TriState Canada General Company Michigan
04 TriState Canada Gas Pipeline Ltd (66.67%) Canada
03 Financial Joint Venture, LLC (1%) Michigan
03 Grands Lacs Limited Partnership (49%) Michigan
03 Guardian Pipeline, LLC (33.33%) Michigan
03 Michigan Intrastate Lateral System Partnership (50%) Michigan
04 Saginaw Bay Lateral Limited Partnership (10%) Michigan
03 Nitrotec Corporation (50%) Delaware
03 Otsego EOR LLC (25%) Michigan
03 Panhandle Eastern Pipe Line Company Delaware
04 CMS Panhandle Eastern Resources, Inc. Delaware
04 CMS Panhandle Storage Company Delaware
04 CMS Trunkline Pipeline Holdings, Inc. Delaware
04 Pan Gas Storage Company Delaware
05 Lee 8 Storage Partnership (40%)
04 Trunkline Field Services Company Delaware
05 PanEnergy Lake Charles Generation, Inc. Delaware
04 Trunkline Gas Company Delaware
05 CMS Trunkline Gas Resources, Inc. Delaware
04 Trunkline LNG Company Delaware
03 TriState Pipeline, LLC (66-2/3%) Michigan
03 Western Australia Gas Transmission Company I Cayman Islands
04 CMS Gas Transmission del Sur Company (60%) Cayman Islands
05 Atacama Finance Co.(40%) Cayman Islands
05 CMS Atacama Company (40%) Cayman Islands
05 CMS Gas Transmission of Australia Holdings Company Cayman Islands
06 CMS Gas Transmission of Australia Cayman Islands
05 Compania de Inversiones CMS Energy Chile Limitada (99%) Chile
06 Administradora Proyecto Atacama S.A. (50%)
06 CMS Servicios de Agua de Chile Compania Limitada Chile
06 Gasoducto Atacama Compania Limitada LLP (50%)
06 Nor Oeste Pacifico Generacion de Energia Limitada (50%)
05 Energex Co.(20%) Cayman Islands
05 Gasoducto Cuenca Noroeste Limitado LLP (50%)
06 Gasoducto Cuenca Noroeste Limitada Argentine Branch
04 CMS International Financial Services Company Cayman Islands
04 CMS Luxembourg SARL Luxembourg
05 Valandrid B.V. Netherlands
06 CMS Goldfields Gas Transmission Australia Pty. Ltd. Australia
07 SCP Investments (No. 1) Pty. Ltd.(45%) Australia
08 SCP Investments (No. 2) Pty. Ltd. Australia
09 Southern Cross Pipelines Australia Pty. Ltd. Australia
10 Goldfields Gas Transmission Joint Venture (66.664%) Australia
08 SCP Investments (No. 3) Pty. Ltd. Australia
09 Southern Cross Pipelines (NPL) Australia Pty. Ltd. Australia
10 Goldfields Gas Transmission Joint Venture (25.493%) Australia
08 Goldfields Gas Transmission Pty. Ltd. Australia
06 CMS TriState Canada Unlimited Company Canada
07 TriState Canada Limited Partnership (66%) Canada
02 CMS Generation Co. Michigan
4
03 CMS Centrales Termicas S.A. (99%) Argentina
03 CMS Generation Altoona Company (Inactive) Michigan
03 CMS Generation Chateauguay Company Michigan
03 CMS Generation Filer City, Inc. Michigan
03 CMS Generation Filer City Operating Company Michigan
03 CMS Generation Genesee Company Michigan
03 CMS Generation Grayling Company Michigan
03 CMS Generation Grayling Holdings Company Michigan
03 CMS Generation Holdings Company Michigan
04 CMS Centrales Termicas SA (1%) Argentina
04 CMS Generation SA (0.01%) Argentina
04 Genesee Power Station LP (48.75%) Delaware
05 GPS Newco, LLC (25%) Kansas
04 GPS Newco, LLC (50%) Kansas
04 Lyonsdale Energy LP (49%) Michigan
04 McCook Cogeneration Station, LLC (50%) (Inactive) Michigan
04 Moapa Energy Limited Partnership (1%) Nevada
04 Metro East, LLC (50%)(Inactive) Michigan
04 Mon Valley Energy LP (49.5%)(Inactive) Pennsylvania
04 Moose River Properties, Inc. (50%) Delaware
04 Oxford/CMS Development LP (1%) Michigan
03 CMS Generation Honey Lake Company Michigan
03 CMS Generation Investment Company I Cayman Islands
04 Aguas de Chile Limitada (99.99%) Chile
04 Atacama Finance Company (16%) Cayman Islands
04 CMS Generation Cebu Limited Duration Company (99%) Cayman Islands
05 Toledo Holdings Corporation (40%) Philippines
05 Toledo Power Company (47.5%) Philippines
04 CMS Generation Cebu Operating Limited Duration Company (99%) Cayman Islands
04 CMS Generation Jegurupadu I Limited Duration Company (99%) Cayman Islands
05 Jegurupadu O&M Company Mauritius (50%) Mauritius
06 Jegurupadu Operating and Maintenance Company (60%) India
04 CMS Generation Jegurupadu II Limited Duration Company (99%) Cayman Islands
05 Jegurupadu O&M Company Mauritius (50%) Mauritius
04 CMS Generation Jorf Lasfar I Limited Duration Company (99%) Cayman Islands
05 Jorf Lasfar Power Energy Handelsbolag (50%) Sweden
06 Jorf Lasfar Energy Company SCA (23%) Sweden
05 Jorf Lasfar I Handelsbolag (50%) Sweden
06 Jorf Lasfar Energy Company SCA (25%) Sweden
05 Jorf Lasfar Handelsbolag (50%) Sweden
06 Jorf Lasfar Energy Company SCA (2%) Sweden
04 CMS Generation Jorf Lasfar II Limited Duration Company (99%) Cayman Islands
05 Jorf Lasfar Power Energy Handelsbolag (50%) Sweden
06 Jorf Lasfar Energy Company SCA (23%) Sweden
05 Jorf Lasfar I Handelsbolag (50%) Sweden
06 Jorf Lasfar Energy Company SCA (25%) Sweden
05 Jorf Lasfar Handelsbolag (50%) Sweden
06 Jorf Lasfar Energy Company SCA (2%) Sweden
04 CMS Generation Jorf Lasfar III Limited Duration Company (50%) Cayman Islands
05 Jorf Lasfar Operations Handelsbolag (1%) Sweden
06 CMS Morocco Operating Company SCA Morocco
5
04 CMS Generation Loy Yang Holdings 1 Ltd. Cayman Islands
05 Horizon Energy Holdings Ltd. Cayman Islands
06 Loy Yang Power Partners (49.63%) Australia
06 Loy Yang Power Projects Pty. Ltd. (49.63%) Australia
06 Loy Yang Power Management Pty. Ltd. (49.63%) Australia
04 CMS Generation Loy Yang Holdings 2 Ltd. Cayman Islands
05 CMS Generation Horizon Energy Holdings Ltd. Cayman Islands
04 CMS Generation Pinamucan Limited Duration Company Cayman Islands
04 CMS Generation Pinamucan Operating Limited Duration Company Cayman Islands
04 CMS Generation Neyveli Ltd. (99%) Mauritius
05 ST CMS Electric Company Private Limited (50%) India
04 CMS Servicios de Aguas de Chile Limitada Chile
04 CMS Takoradi Investment Company Cayman Islands
05 CMS Takoradi Investment Company II Cayman Islands
06 Takoradi International Company (90%) Cayman Islands
05 CMS Generation Taweelah Limited Cayman Islands
05 Emirates CMS Power Company (40%) United Arab Emirates
04 CMS Generation Taweelah Limited I Cayman Islands
04 Energex Co. (16%) Cayman Islands
04 Energiaktiebolaget CMS Sweden
04 Jegurupadu O&M Company (99%) Mauritius
04 Monetize Limited Mauritius
05 GMR Vasavi Power Corporation Private Limited India
04 National Power Supply (66.24%) Thailand
04 Scudder Latin American Power I-P LDC (25%) Cayman Islands
03 CMS Generation Investment Company II Cayman Islands
04 CMS Gas Transmission del Sur Company (40%) Cayman Islands
03 CMS Generation Investment Company III Cayman Islands
04 Jegurupadu CMS Generation Company Ltd. Mauritius
05 GVK Industries Ltd. India
03 CMS Generation Lyonsdale Company Michigan
03 CMS Generation Michigan Power LLC Michigan
03 CMS Generation Montreal Company Michigan
03 CMS Generation Mon Valley Company Michigan
03 CMS Generation Operating Company Michigan
03 CMS Generation Recycling Company Michigan
03 CMS Generation SA (99.99%) Argentina
04 Hidroelectrica El Chocon, S.A. (2.48%) Argentina
04 Hidroinvest SA (25%) Argentina
05 Hidroelectrica El Chocon, S.A. (59%) Argentina
03 CMS International Operating Company Cayman Islands
03 Compania de Inversiones en Energia Electrica S.A. (CIEESA)(1%) Argentina
03 Dearborn Generation Operating LLC Michigan
03 Dearborn Industrial Energy, LLC Michigan
04 Dearborn Industrial Generation, L.L.C. Michigan
03 Exeter Management Company (50%) Connecticut
03 Honey Lake Energy I LP (1%) California
03 Honey Lake Energy II LP (1%) California
03 HYDRA-CO Enterprises, Inc. New York
04 Benton Falls Associates (50% GP) Maine
04 Caribbean Electric Power (40% GP)
04 CMS Generation Stratton Company Michigan
05 Stratton Energy Associates (20% GP & 15% LP) New York
6
04 CMS Generation Operating Company II, Inc. New York
05 HCO-Jamaica, Inc. New York
06 Private Power Operators Limited (50%) Jamaica
04 Cogent Little Falls (49.99% GP) New York
04 Copenhagen Associates (49.99% LP) New York
04 Craven County Wood Energy LP (44.99% LP) Delaware
04 HCE-Appomattox, Inc. New York
05 Appomattox River Associates LP(1% GP & 54.5% LP) Virginia
04 HCE-Biopower, Inc. New York
05 IPP Investment Partnership (51%) Michigan
04 HCE-Hudson, Inc. New York
05 Curtis/Palmer Hydroelectric Company LP (12.5% GP)
04 HCE-Imperial Valley, Inc. New York
05 Imperial Resource Recovery Associates, LP (1.231% LP) California
04 HCE-Jamaica Development, Inc. New York
04 HCE-Lakewood, Inc. New York
05 CMS Generation Lakewood Company Delaware
06 Lakewood Cogeneration, L.P. (1%) Delaware
05 Lakewood Cogeneration, L.P. (1%) Delaware
04 HCE-Rockfort Diesel, Inc. New York
05 Jamaica Private Power Company Limited (43.93%) Jamaica
04 HYDRA-CO Generation, Inc. (Inactive) New York
04 Hydro Power Associates (49.99% GP) New York
04 Imperial Resource Recovery Associates, LP (39.269% LP) California
04 IPP Investment Partnership (49%) Michigan
05 Cogent Little Falls (0.01% GP) New York
05 Copenhagen Associates (0.01% LP) New York
05 Craven County Wood Energy LP (0.01% LP) Delaware
05 Hydro Power Associates (0.01% GP) New York
05 Lyonsdale Associates (0.01% GP) New York
04 Jamaica Energy Team Limited (59.7%) Jamaica
04 Lakewood Cogeneration, L.P. (78%) Delaware
04 Little Falls Hydropower Associates (33.33% GP) New York
04 Lock 17 Group (33.33% GP) New York
05 Little Falls Hydropower Associates (1%) New York
04 Lock 17 Management Group (33.33% GP) New York
04 Lyonsdale Associates (49.99% GP) New York
04 New Bern Energy Recovery, Inc. Delaware
05 Craven County Wood Energy LP (5%) Delaware
04 PowerSmith Cogeneration Project, LP (8.75% LP) Delaware
04 Windpower Partners 1988 (22.73% LP) California
04 Windpower Partners 1989 (8.5346% LP) California
03 Jorf Lasfar Operations Handelsbolag (99%) Sweden
03 McCook Cogeneration Station, LLC (50%)(Inactive) Michigan
03 McCook Waste Wood Recovery Facility, LLC (50% Member) Michigan
03 MCV2 Development Company Partnership (58.68%) Michigan
03 Metro East, LLC (50%)(Inactive) Michigan
03 Mid-Michigan Recycling, LLC Michigan
03 Oxford/CMS Development LP (99%) Delaware
04 Exeter Energy LP (48% LP) Connecticut
04 Moapa Energy LP (99%) Nevada
03 Oxford Tire Recycling, Inc. (Inactive) Delaware
03 Oxford Tire Recycling of Massachusetts, Inc. Delaware
7
03 Oxford Tire Supply, Inc. Delaware
03 Scudder Latin American Power I-C, LDC (25%) Cayman Islands
03 Taweelah A2 Operating Company
02 CMS Lake Muskegon Company Michigan
03 Lake Muskegon Community, LLC (Inactive) (25%) Michigan
02 CMS Land Company Michigan
03 Bay Harbor Company, LLC (50% Member) Michigan
03 Bay Harbor Village Company, LLC (25%) Michigan
02 CMS Marketing, Services and Trading Company Michigan
03 CMS MST Engineering Company Michigan
03 CMS Texon Company Michigan
04 Texon Distributing LP (1%) Delaware
03 CMS Viron Corporation Missouri
03 Enline Energy Solutions, LLC (50%) Texas
03 PremStar Energy Canada Ltd.(50%) Canada
04 Energistics Group, Inc. Canada
03 Texon Distributing LP (49%) Delaware
02 CMS Oil and Gas Company Michigan
03 CMS Oil and Gas (Holdings) Ltd. Cayman Islands
04 CMS NOMECO Congo LDC (1%) Cayman Islands
04 CMS NOMECO Venezuela LDC (9%) Cayman Islands
04 CMS Oil and Gas (Alba) LDC (1%) Cayman Islands
04 CMS Oil and Gas (Argentina) LDC (1%) Cayman Islands
04 CMS Oil and Gas (Congo) Ltd (1%) Cayman Islands
04 CMS Oil and Gas (Ecuador) LDC (1%) Cayman Islands
04 CMS Oil and Gas (E.G.) LDC (1%) Cayman Islands
04 CMS Oil and Gas (E.G.) Ltd (1%) Cayman Islands
03 CMS Oil and Gas (International) Company Texas
04 CMS NOMECO International Congo Holdings, Inc. Texas
04 CMS NOMECO Congo, Inc. Delaware
04 CMS Oil and Gas (Cameroon) Ltd. Cayman Islands
04 CMS Oil and Gas (Cote d'Ivoire) Ltd Cayman Islands
04 CMS Oil and Gas International (Transportation) Company Texas
04 CMS Oil and Gas International (Tunisia) Company Texas
03 CMS Oil and Gas (International) Ltd. Cayman Islands
04 CMS NOMECO Congo LDC (99%) Cayman Islands
04 CMS NOMECO Venezuela LDC (91%) Cayman Islands
04 CMS Oil and Gas (Alba) LDC (99%) Cayman Islands
04 CMS Oil and Gas (Argentina) LDC (99%) Cayman Islands
04 CMS Oil and Gas (Congo) Ltd (99%) Cayman Islands
04 CMS Oil and Gas (Ecuador) LDC (99%) Cayman Islands
04 CMS Oil and Gas (E.G.) LDC (99%) Cayman Islands
04 CMS Oil and Gas (E.G.) Ltd (99%) Cayman Islands
03 CMS Oil and Gas (Pipeline) Company Michigan
03 Explotaciones CMS Oil and Gas Company Delaware
03 NOMECO China Oil Co. Michigan
03 NOMECO Ecuador Oil Company Michigan
03 Terra Energy, Ltd. Michigan
04 Eagle Productions, Inc. (20%) Michigan
04 Energy Acquisition Operating Corporation Michigan
04 J.R. Productions, Inc. (20%) Michigan
04 Kristen Corporation Michigan
04 Newaygo/Oceana Pipeline LP (43.77%) Michigan
8
04 Northwest Operations, Inc. (20%) Michigan
04 Phoenix Operations, Inc. (40%) Michigan
04 State 26 Production Co. (20%) Michigan
04 Terra-Hayes Pipeline Company (26.58%) Michigan
04 Terra-Westside Processing Co. Partnership (15%) Michigan
04 Terra Pipeline Company Michigan
04 Thunderbay Pipeline Company LLC (10%) Michigan
04 Wellcorps LLC(55%) Michigan
02 CMS Operating S.A. Argentina
03 CMS Ensenada S.A. Argentina
04 Cuyana S.A. de Inversiones Argentina
05 Centrales Termicas Mendoza, S.A. Argentina
02 CMS Resource Development Company Michigan
02 Monarch Management Company Michigan
01 Consumers Energy Company Michigan
02 CMS Engineering Co. Michigan
02 CMS Midland Holdings Company Michigan
02 CMS Midland, Inc. Michigan
02 Consumers EnergyGuard Services, Inc. Michigan
02 ES Services Company Michigan
02 Huron Hydrocarbons, Inc. Michigan
02 MEC Development Corp. Michigan
02 Michigan Gas Storage Company Michigan
Additional subsidiaries, unnamed above, when considered in the aggregate as a
single subsidiary would not be considered a significant subsidiary.