Best 100 Energy Firms: A List
The global energy industry is made up companies operating in all areas of the production, distribution and sale of energy.
Companies in the energy sector include those working in natural gas and oil production; electric power generation; coal; renewable energy; distribution, sales and retail; utilities; infrastructure; and related products, services and technologies.
The following list of energy companies covers the top 100 global players based on market capitalisation.
While many of them have interests in multiple areas, the companies are listed alphabetically, categorised by their primary business focus.
State-owned coal mining enterprise working in the production, sale and transportation of coal and coal-based power.
Operating in the generation and distribution of electric power and serving customers worldwide in 15 countries across Europe, Asia, North America and South America.
A conglomerate of 96 companies operating across Eastern Europe, with a primary focus on the generation and distribution of electricity.
Specialist in energy generation, distribution and transportation, operating the longest transportation system of hydrocarbons and crude oil in North America.
A multinational company specialising in the generation and distribution of electricity from a number of sources including wind power, solar power, geothermal and hydroelectric power.
A specialist in electric power production and distribution to the retail sector, serving around 2.9 million customers in the Deep South states of America.
Working in transportation, storage and distribution, and operating refined products and crude oil pipelines across the US.
A specialist in the storage, transportation and distribution of natural gas and oil across Western Canada.
Operating in the storage, transportation and marketing of liquified petroleum gas, and the storage of natural gas.
A multinational conglomerate operating a number of infrastructure companies including UK Power Networks, Australian Gas Networks, and Wales and West Utilities.
A holding company operating as one of China’s largest distributors of clean energy, principally focused on the construction, management and operation of gas-pipeline infrastructure.
A UK-based company providing end-to-end services and technologies for oil and gas projects.
A multinational conglomerate with various assets in renewable energy, power, lighting, and oil and gas.
A multinational trading company with interests in power and electric infrastructure, investment and trading of crude oil, natural gas and biofuel, and the production of petrochemicals.
A conglomerate holding company operating multiple businesses across India, with an interest in petrochemicals, energy and natural resources.
The largest independent company in oil and natural gas exploration in the US, with operations across the US, Algeria, Peru and the Red Sea.
Operating in oil and gas exploration and production, with activities across the US, the North Sea and Egypt.
A ‘supermajor’ among the top energy companies in the world, operating vertically across exploration, production, distribution, power generation, refining and trading.
An independent company focused on the exploitation of oil reserves found solely in Texas, and the exploration and development of natural gas resources in Pennsylvania.
An independent producer of natural gas and crude oil specialising in exploration, production and development, with operations in North America, the North Sea and offshore Africa.
An integrated company operating across oil exploration, natural gas processing, refining and transportation.
Operates within all areas of oil, natural gas and geothermal energy on a global scale, including exploration, production, power generation, refining and transport.
Commonly known as Sinopec, this is a fully integrated company operating in hydrocarbon exploration, petrochemical production, transportation, and import and export.
A subsidiary of China National Offshore Oil Corporation – and the country’s top producer of natural gas and crude oil.
Specialists in hydrocarbon exploration, operating solely in the southwestern area of the US. Its exploration is focused in the Permian Basin.
Solely focused on the exploration, production and development of oil and natural gas, with operations in Alaska, Canada, Latin America, Asia Pacific, Europe and the Middle East.
An independent company focused on natural gas and petroleum exploration and production, via horizontal drilling and hydraulic fracturing.
Established in 1971, Devon Energy Corporation specialises in onshore hydrocarbon exploration in the US and Canada.
An independent Texas-based company focused primarily on the exploration and development of onshore natural gas and oil reserves.
Colombia’s largest petroleum company, specialising in exploration, production, transportation, petrochemicals and biofuels.
Founded in 2002, Encana is focused on hydrocarbon exploration across Canada and the US.
An integrated oil and gas company with activities in exploration and production, power generation and refining, and the marketing of petroleum products.
Focused on hydrocarbon exploration with sites across the US, Canada and China.
A Norwegian company focused primarily on oil and gas exploration and production, pipeline operations, wind energy, and biofuels.
One of the largest energy companies in the world, operating vertically across oil exploration, wholesale, refining and retail.
Principally focused on the production and sale of petroleum and petrochemical products across China, the Philippines, Malaysia and Singapore.
India’s largest state-owned gas processing and distribution company. It is a specialist in the exploration, production and distribution of natural gas.
A Portugal-based corporation overseeing over 100 companies working in natural gas supply and distribution, plus petroleum exploration and production.
A Russian company operating predominantly in the extraction, production and sale of natural gas, as well as the production of crude oil.
An independent New York-based organisation focused on the exploration and production of natural gas and crude oil.
An integrated company working across oil and gas exploration and production, refining and retail.
An integrated oil and gas company working in the production of natural gas, crude oil, petroleum products and diluted bitumen.
India’s largest commercial oil company, with integrated assets in gas, oil and petrochemicals, as well as a focus on alternative energy sources.
A Japanese holding company focused primarily on the exploration, production and sale of petroleum and natural gas.
A Russian corporation operating in the production, transportation and sale of natural gas, petroleum and petroleum products.
An independent oil and gas company working in exploration and production. It is based in Sweden, with its main operations in Norway.
Formally known as The Ohio Oil Company, Marathon Oil operates in the exploration and production of natural gas and petroleum.
The company separated from Marathon Oil through a corporate spin-off in 2011 and is focused on the refining, transportation and marketing of petroleum.
Specialists in the production, refining and marketing of oil products. The company is based in Finland, with operations in 14 countries.
An independent hydrocarbon exploration and production company. It operates in the US with assets in offshore oil fields in Cameroon, Equatorial Guinea and Gabon.
Founded in 1994, Novatek operates primarily in the production of natural gas from reserves in West Siberia.
An integrated oil and gas company focused on the exploration of gas and oil, and the production of petrochemicals.
One of the main oil and gas companies in India, producing approximately 62% of the country’s natural gas and 70% of its crude oil.
An integrated company operating across exploration and production, refining and transportation, distribution, gas and power, and biofuels.
The second-biggest oil producer in China, focused on the exploration, production and sale of natural gas and crude oil.
Primarily focused on the manufacturing, refining and marketing of crude oil, the company separated from ConocoPhillips through a corporate spin-off in 2012.
Founded in 1997 and operating in hydrocarbon exploration in the Permian Basin in the US.
An integrated company with interests in hydrocarbon exploration, electricity generation and petroleum products.
An integrated company focused on the exploration, production and sale of natural gas and oil, and the manufacturing and sale of petrochemical products.
One of the world’s top energy companies, operating vertically across the whole oil and gas chain, with additional interests in renewable energy production. Read about the application process to Shell here.
Operating two principal business units in coal mining and oil and gas exploration and production across 36 countries.
Originally the Korea Oil Corporation, SK Innovation is focused on the production of petroleum, refining and future energy technologies.
A South Korean company specialising in the production of petroleum and petrochemical products.
Operating in the exploration, production, refining, supply and trading of crude oil, natural gas and petroleum, with footprints in Canada, the UK, Norway, Libya and Syria.
A Russian hydrocarbon and petroleum production company engaged across all areas of oil and gas field operation and exploration, gas processing, manufacturing, refining, and wholesale.
Focused on the exploration, production, refining and marketing of gas and oil, and the production and sale of petrochemicals.
Another ‘supermajor’ among the top energy companies in the world, operating an integrated business model across all areas of the oil and gas market.
Producer of power, petrochemical products and fuel, and operating several refineries in the US, Canada and the UK.
The largest company in Australia solely focused on oil and gas exploration and production, with headquarters in Perth.
An industrial service company providing products and services to the oil and gas industry in over 120 countries, partially owned by the General Electric Company.
Designers, manufacturers and distributors of power generation products, trading in around 190 countries.
A multinational corporation based in the US, it manufactures and supplies energy-related products and services across commercial, industrial and consumer markets.
Suppliers of products and services to the oil and gas industry, with business operations in over 70 countries.
Worldwide suppliers of products and services to the oil and gas production industries, and providers of supply chain integration services.
A global supplier of products and services to the oil and gas industry with principal executive offices in London, Paris and the Hague.
A Chinese renewable energy company operating in wind, solar and hydropower generation.
A Danish company primarily focused on power generation through offshore wind farming worldwide.
A holding company working with multiple subsidiaries to provide electricity to 2.4 million customers and natural gas to 900,000 customers across the US.
An investor-owned holding company focused on the generation, transmission and sale of electricity, serving customers in Hong Kong, mainland China, Australia, India and Southeast Asia.
Founded in 1886, CMS Energy specialises in consumer energy. It currently provides electricity and natural gas to over 6 million customers.
Specialists in the generation and supply of electricity via thermoelectric plants, hydroelectric plants and wind power.
Principally involved in the provision of consumer electricity and gas across the state of New York and surrounding areas.
Suppliers of natural gas and electricity to both residential and business customers across the midwestern and eastern states of America.
French energy company focused on the engineering and distribution of electricity, with activities in wind power, solar energy and hydropower technologies. One of the ‘Big Six’ energy companies.
A Portuguese energy group producing, distributing and supplying energy through coal, hydropower and wind power technologies.
Operating across electricity production and distribution, natural gas, renewable energy, energy transition and petroleum.
A German-based energy service provider, serving 33 million customers in over 30 countries. One of the main public utility companies operating in Europe and part of the ‘Big Six’.
A producer and distributor of electricity, providing power to over 690,000 industrial, commercial and residential customers across the state of Missouri.
A specialist in the generation and provision of electric power, with eight primary subsidiaries operating in 48 US states.
A fully regulated energy company serving around 6 million customers in the US. It is focused on the generation, transmission and distribution of electricity.
A state-owned company based in Finland, with operations in power plants and the generation and sale of electricity and heat.
A supplier of consumer energy across North America, with a focus on renewable energy sources.
Based in Indiana, NiSource is a fully regulated utility company providing natural gas and electricity across seven states.
Primarily focused on the generation and sale of electricity to distribution companies and electricity boards across India.
Founded in 1905, Pacific Gas and Electric supplies consumer gas and electricity to approximately 5.2 million homes in the US.
Serving customers in the UK and US, PPL is primarily focused on the generation and supply of power through natural gas, coal and oil.
Established in 1985, Public Service Enterprise Group deals in the generation and supply of consumer gas and electricity.
One of the ‘Big Six’ UK energy companies, focused on the generation and supply of consumer gas and electricity across the UK and the Republic of Ireland.
Provides around 4.4 million customers with natural gas and electricity through a number of brands serving the states of Michigan, Wisconsin, Minnesota and Illinois.
A holding company providing electricity to 3.3 million customers and natural gas to 1.8 million customers across the US through four subsidiaries.