What Are the Names of Some Energy Companies in the United States?

American energy companies include Exxon Mobil and General Electric, which are the country's largest and secondary largest publicly traded energy companies respectively based on market capitalization. Exxon's business is primarily oil-related, while General Electric operates in sectors ranging from appliances and lighting to aviation, water and power.

Chevron is the third largest energy corporation headquartered in America based on the value of its shares. Chevron produces energy from oil and natural gas as well as geothermal, solar and biofuel sources. Chevron is followed by ConocoPhillips, which is also a fossil fuels corporation that extracts energy from sources such as oil sands and deepwater drilling platforms. Additional large, publicly traded U.S. energy companies include EOG Resources, Phillips 66, Anadarko Petroleum Corporation, which are all focused on oil or gas production or distribution. Other types of energy companies include Emerson Electric, which produces consumer electronics and appliances; Halliburton, which provides oilfield equipment and services; and National Oilwell Varco, which produces metal fabrications for use in the energy extraction and distribution industry.

Private energy businesses include electrical companies Tenaska Energy, Energy Future Holdings, Drummond and Oxbow. Private oil and gas companies include Mansfield Oil, Sinclair Oil, Apex Oil, Tauber Oil and Hunt Oil. Other private oil companies include Red Apple Group, Ergon and Colonial Group.