All Energy

Companies whose core business is extracting, refining, transporting or marketing oil, natural gas and other primary energy commodities, including national oil companies, integrated oil majors and independent producers and refiners. Belongs here: any company whose primary revenue is producing or selling the energy commodity itself. Does not belong here: companies that distribute electricity or piped gas to end customers under regulated tariffs, grouped under Utilities, or companies that mine coal, metals or industrial minerals rather than hydrocarbons, grouped under Materials.