Fremantle Gas and Coke Company
Macarthur Coal
Caspian International Petroleum Company
Distrigas
Nafta
São Paulo Tramway, Light and Power Company
Nalcor Energy
Asiatic Petroleum Company
Shenhua Group
State Power Corporation of China
Eesti Kiviõli
Eesti Küttejõud
Eestimaa Õlikonsortsium
Esimene Eesti Põlevkivitööstus
New Consolidated Gold Fields
Compagnie Générale d’Electricité
Innogy
Kontinentale Öl
PreussenElektra
WIFO
Wintershall
Fossafélagið Títan
Hitaveita Suðurnesja
Netherland Indies Gas Company
Iraq Petroleum Company
British Electric Traction Company
Cairn India
Lanco Infratech
Circle Oil
Topaz Energy
A.F.S.K. Hom Tov
Ampal-American Israel Corporation
Azienda Italiana Petroli Albania
Azienda Nazionale Idrogenazione Combustibili
Chōsen Coal Industry Company
JCO
PetroKazakhstan
ProJET
Sabah Gas Industries
Mexican Eagle Petroleum Company
Mexican Light and Power Company
Oranje Nassau Mijnen
Mighty River Power
Petrocorp
Pike River Coal
Solid Energy
Wellington Gas Company
Windflow Technology
Altinex
Bayerngas Norge
Hydro Oil & Gas
Ocean Rig
Saga Petroleum
Saudefaldene
Statoil Fuel & Retail
Gasworks building, Bydgoszcz
New World Resources
Leningradslanets
Branobel
Lietuvos Dujos
Campsa
Unión Fenosa
Activ Solar
Energy Company of Ukraine
United Energy Systems of Ukraine
Alloa Coal Company
Corex UK
Gas Light and Coke Company
Hyder (defunct company)
Lambton Collieries
Moody International
Qserv
Staveley Coal and Iron Company
Alphabet Energy
Cello Energy
Champion-Providence Mine
Combustion Resources
Commonwealth & Southern Corporation
Coskata, Inc.
Electric Bond and Share Company
Enron
Enron Wind
Havemeyer Oil Company
BP Biofuels Highlands
Hillman Coal and Coke Company
Houston Lighting & Power
Ingrain, Inc.
Laclede Group
Leor Energy
Montana Power Company
ODECO
Pittsburgh Coal Company
Pride International
Questar Corporation
Quivira Mining Corporation
Range Fuels
Rex Energy
San Joaquin Light and Power Corporation
Southern Union Company
Standard Gas Light Company
Tesco Corporation
Unicom Corp
Union Colliery Company