What Companies Are In The Energy Field?

The energy sector is a critical part of the economy, providing the power and fuel that drives industry and commerce. The sector is also huge and diverse, encompassing everything from oil and gas exploration to electricity generation and to renewable energy.

Within the energy sector, there are many different companies involved in a variety of activities. Here is a list of some of the biggest and most important companies in the energy field:

1. Chevron

Chevron Corporation is an American energy company based in San Ramon, California. It is engaged in every aspect of the oil, natural gas, and geothermal energy industries, including exploration, production, refining, marketing, and transportation. It is one of the world’s largest oil companies, operating in more than 180 countries.

Founded in 1879, Chevron is one of the oldest energy companies in the world. In 2021 alone, they earned a revenue of $162.47 billion. As of March 2021, they have around 42,595 employees. As of 2022, Chevron is the 16th biggest company in the world. It also has several sub-brands and subsidiaries, such as Caltex, Texaco, Havoline, Techron, and Gulf.

Chevron is also a major producer of natural gas and a leading manufacturer of lubricants and speciality chemicals. In addition to its core businesses, Chevron also has interests in electricity generation and renewables. As a result, the company is well-positioned to benefit from the continued growth of the global energy market.

2. ConocoPhillips

ConocoPhillips is an American multinational energy company with operations in more than 13 countries. It is engaged in the exploration, production, transportation, and marketing of crude oil, bitumen, and natural gas. The company also has a significant presence in the chemicals sector, with interests in LNG and plastics.

ConocoPhillips was founded in 2002 and is headquartered in Houston, Texas. It was founded through the merger of Conoco and Phillips Petroleum Company. As of 2022, ConocoPhillips is ranked 77th in the Fortune 500 list of the largest companies in the United States. In 2021, they earned a revenue of $52.81 billion.

As of 2021, ConocoPhillips earned a revenue of $45.83 billion with a daily production of 1,567 thousand barrels of oil equivalent (BOE). It has around 9,900 employees as of 2021. The company also has some bad records, such as they were ranked 14th most polluting company in the world by The Guardian.

3. ExxonMobil Corporation

ExxonMobil Corporation is an American multinational oil and gas company headquartered in Irving, Texas. They are an industry leader with operations in every aspect of the energy and chemical business. In addition to oil and gas, ExxonMobil is also a major player in the refining, marketing, and transporting of petroleum products.

ExxonMobil was founded in 1999 through the merger of Exxon and Mobil. As of 2021, it had a revenue of $206.57 billion with a daily production of 2,386 thousand BOE (as of 2019). ExxonMobil has around 64,000 employees as of 2021. Sub-brands of ExxonMobil include Coolanol, Esso, Mobil, On the Run, and Speedpass.

ExxonMobil is the world’s largest publicly traded oil and gas company and the 12th largest company in the world by revenue. They are also the biggest marketer and refiner of petroleum products, as well as one of the biggest producers of plastic in the world. It operates facilities or markets its products in almost all countries.

4. NextEra Energy

NextEra Energy, Inc. is an American energy company based in Juno Beach, Florida. It is one of the biggest producers of renewable energy in the world and the largest holding company for electric utilities in terms of market capitalization. Founded in 1984, the company operates through its subsidiaries Florida Power & Light Company, NextEra Energy Resources, and Gulf Power Company.

Their subsidiary, Florida Power & Light, one of the third largest electric utility companies in the United States, serves more than 12 million customers across half of Florida. NextEra Energy Resources, on the other hand, is the world’s largest generator of renewable energy from the wind and sun.

As of 2020, NextEra Energy has a power generating capacity of around 58 GW, where 24 GW is from fossil fuels, and the other portion is from nuclear and renewable resources. The company has more than 14,900 employees as of 2021. In the same year, they had a revenue of $17.07 billion.

5. Southern Company

Southern Company is an American gas and electric utility holding company headquartered in Atlanta, Georgia, United States. It is the parent company of several electric and gas utilities in the United States, including Alabama Power, Georgia Power, Mississippi Power, Southern Company Gas, and Southern Nuclear.

Southern Company was founded in 1945 and has around 29,000 employees as of 2021. In 2018, the company had a revenue of $23.5 billion with an operating income of $2.23 billion. As per their website, the Southern Company company has around 46 GW of electric generating capacity and 1,500 billion cubic feet of combined natural gas.

Their main electricity sources include coal, natural gas, nuclear, and renewable energy. It serves more than 9 million customers in 6 states of the United States. It is the second largest electricity producer in the United States in terms of customer base.

6. Duke Energy

Duke Energy Corporation is one of the biggest and oldest American energy holding companies headquartered in Charlotte, North Carolina. It is the largest electric power holding company in the United States, with operations in many states, including South Carolina, North Carolina, Florida, Ohio, Indiana, and Kentucky.

The Duke Energy company was founded back in 1904 as the Catawba Power Company and has since then acquired various electric and gas utilities. They produce electricity from coal, natural gas, oil, and nuclear power. Apart from electricity, Duke Energy is also engaged in natural gas transmission and storage, as well as renewable energy.

Duke Energy is one of the largest electricity producers in the United States, with a capacity of around 52 GW. The company has around 27,535 employees as of 2021. In 2020, Duke Energy had revenue of $21.72 billion with an operating income of $3.985 billion. The company is ranked 145th in the Fortune 500 list of America’s biggest companies.

7. Phillips 66

Phillips 66 is an American multinational energy company with operations primarily in the United States. It was founded in 1927 as Phillips Petroleum Company and reconfigured as Phillips 66 in 2012. The company is currently headquartered in Houston, Texas. It produces, transports, refines, markets, and distributes natural gas liquids (NGL) and petrochemicals.

As of 2021, Phillips 66 has nearly 2 million barrels per day refining capacity. It is active in many countries, including the United Kingdom, Germany, Austria, Switzerland, and the United States. Apart from manufacturing natural gas products, they are also active in research and development of arising energy sources.

As of 2017, Phillips 66 has around 14,600 employees. In 2019, the company had revenue of $$107.293 billion with an operating income of $3.076 billion. It is ranked 29th in the Fortune 500 list of America’s biggest companies.

8. Exelon Corporation

Founded in 1992, Exelon Corporation is an American energy company headquartered in Houston, Texas. The company has a very big portfolio, including coal, natural gas, wind, oil, utility-scale, nuclear, and distributed solar generation. It serves around 6 million people in 24 states. As of 2021, the company had a revenue of $26.99 billion.

Exelon Corporation also owns a large fleet of nuclear reactors, making it the largest operator of nuclear plants in the United States. The company has around 31.5 GW of electricity generating capacity, and where a large portion is carbon-free. As of 2021, Exelon Corporation has around 6,635 employees.

Some of the subsidiaries of Exelon Corporation include Reliant Energy, Direct Energy, Stream Energy, and Green Mountain Energy. They also acquired a portfolio of energy generation and retail companies, including Reliant Energy, XOOM Energy, Discount Power and Cirro Energy, etc. As of

9. Marathon Petroleum

Marathon Petroleum Corporation is an American-based Corporation that refines, market, and transport petroleum. Headquartered in Findlay, Ohio, the company was formed as a result of the merger of Marathon Oil and Ashland Inc.’s petroleum business in 1998. As of January 2022, It is the 2nd largest crude oil refiner in North America, with a capacity of nearly 593,000 Barrels per calendar day.

Marathon Petroleum Corporation owns and operates 13 refineries in the United States and also has a large network of pipelines, terminal barges, transportation, and storage assets across the country. As of December 2017, They had around 43,800 full-time employees serving worldwide.

In 2020, Marathon Petroleum had revenue of $69.032 billion with a negative operating income of −US$12.247. As per the most recent dates, the company is ranked 19 th in the Fortune 500 list of America’s biggest companies.

10. Enterprise Products Partners L.P.

One of the biggest publicly listed partnerships, Enterprise Products Partners L.P. is a top North American supplier of midstream energy services to consumers and producers. Headquartered in Houston, Texas, Enterprise Products Partners L.P. was founded in 1968.

The company owns and operates a large number of energy pipelines and storage facilities for natural gas, crude oil, and other refined products and petrochemicals. The company also provides transportation, fractionation, storage, and processing services for customers in various states of the USA.

As of December 2020, Enterprise Products Partners L.P. had around 7,000 employees working for them. In 2021, the company reported $40.806 billion in revenue with an operating income of $6.103 billion. It is ranked 89th in the Fortune 500 list of America’s biggest companies.


The energy field is a very important and vast industry. It includes many different types of companies, from those that explore and drill for oil to those that refine it and sell it to consumers. 

These companies are some of the biggest and most important producers in the energy field. They are all leaders in their respective areas and have a large impact on the industry as a whole.