List of companies in the energy sector in the United States

Companies in the energy sector produce and supply energy. This includes those who explore oil and natural gas, coal mines and develop and produce alternative energy and fuels for transportation and electricity. Many of the world’s largest companies in the energy sector are based in the United States. The Americans in this sector can be divided into six main categories: oil and gas, oil field services, refinery, mining, renewable energy and public services.

Oil and gas

Oil and gas companies search and collect natural deposits of oil and gas. These companies in the United States include: ARCO, Apache, Chesapeake Energy, Chevron, Devon, Dynergy, Entergy, Esso, ExxonMobil, Frontier Oil, Global Partners, Harken, Hess, Hunt, Kerr-McGee, Kinder Morgan, Koch, Marathon Oil, Murphy Oil, Noble Energy, Occidental Petroleum, Petrohawk, Range Resources, Sempra, Sunoco, Valero, Williams, Xcel and XTO.

Oil Field Services

Oilfield service companies provide specialized support to oil and gas companies related to oil extraction, in particular, drilling and pumping. These include Arrow Energy, Baker Hughes, Greene’s Energy Group, Halliburton, MI, Mike Byrd Casing Crew, Nabors Well Service, Paramount Petroleum, Pinnergy, Rer-Chem, Sandhill Oil, Schlumberger, Stallion Oil Field, Superior Energy, Swaco, Swan Oil Field and Vetco Gray.


Refining companies convert, or “refine” crude oil into fuels such as gasoline and kerosene. Some examples of these are BP Products, Chalmette Refining, Chevron, Citgo Petroleum, Deer Park Refining, ExxonMobil Refining, Flint Hills Refining, Houston Refining, Motiva, Murphy Oil, PDV Midwest, Navajo Refining, Premcor Refining, Sunoco, Treasure, Valero Energy and WRB.


Mining companies harvest combustible mineral sources, such as coal and uranium. Some examples of them are: ALLETE, Alliance Resource Partners, American Electric Power, Black Hills Corporation, CONSOL Energy, Foundation Coal, General Dynamics, International Coal Group, Luminant, Massey Energy, North American Coal, PacifiCorp, Peabody Energy, Teco Energy and Vectren

Renewable energy

Renewable energy companies develop and produce sources of electricity and fuels derived from infinite resources, such as wind, water and sunlight. These include ArcherDaniels Midland, Babcock & Brown, Ballard Power, Cypress Semiconductor, Evergreen Solar, First Solar, FPL Energy, PPM Energy and SunPower.


Some companies produce and supply electricity to consumers, their sources for doing so include coal, uranium and natural gas. Several examples of companies that perform this som: Alabama Power, Alliant, American Electric Power, Atlantic Energy, Boston Edison, Citizen Electric Company, Citizens Energy, With Edison, DTE Energy, Duke Energy, Edison International, First Energy, Gulf Power, Illinois Power, MidAmerican Energy, New Century Energies, Ohio Edison, Pacificorp, TECO Energy, Virginia Power and Yankee Atomic Electric Company.