The Largest 45 Energy Companies from US in 2021

Dirty energy sources are unfortunately essential these days, but the entire energy sector is committed to the transition to cleaner, more renewable energy sources and renewable ways to use it. As in all developed countries in the world, energy companies are a key part of the economy. In America, the largest companies dynamically extract and supply energy from raw materials to provide people with the comfort and technologies necessary for the functioning of households or companies. The largest energy companies in the United States operate mainly in two areas: oil and gas and utilities. The existing Global Industry Classification Standard defines companies according to their activities. It defines companies from the oil and gas industry as belonging to the “Energy” sector, and those from the electricity and media industry as the “Utilities” sector.
Below you will find a ranking list of the largest energy companies:

1. ExxonMobil (XOM)

The company was founded by John D. Rockefeller in 1882 and is based in Irving, Texas. In three segments, the company deals with the exploration and distribution of oil, gas and petroleum products. Market capitalization: $203.42B

2. Chevron (CVX)

The company was founded in 1906 and is based in San Ramon, California. He deals with administrative services, financial management and technological support for energy and chemical operations. It operates in two segments, Upstream and Downstream. Market capitalization: $177.27 B

3. NextEra Energy (NEE) 

NextEra Energy, Inc. została założona w 1925 roku i ma siedzibę w Juno Beach na Florydzie. Firma była wcześniej znana jako FPL Group Inc. i zmieniła nazwę na NextEra Energy Inc. w maju 2010 roku. Poprzez swoje spółki zależne wytwarza, przesyła i dystrybuuje energię elektryczną w Ameryce Północnej. Firma produkuje energię elektryczną z elektrowni wiatrowych, słonecznych, węglowych, naftowych, jądrowych i gazowych. W zakres jej działań wchodzą także opracowywanie, budowa i eksploatacja długoterminowych aktywów objętych kontraktami. Koncentruje się na instalacjach do wytwarzania energii ze źródeł odnawialnych, rurociągach gazu ziemnego i projektach magazynowania baterii. Market capitalization: $164.97 B

4. Duke Energy Corp (DUK)

Firma została założona w 2005 r. I ma siedzibę w Charlotte w Północnej Karolinie. Firma była wcześniej znana jako Duke Energy Holding Corp. i zmieniła nazwę na Duke Energy Corporation w kwietniu 2005 r. Działania tej firmy opierają się na trzech segmentach: Energetyka i infrastruktura, komercyjne odnawialne źródła energii, Gazownictwo i infrastruktura. Market capitalization: $67.77B

5. Southern Company (SO)

The Southern Company was founded in 1945 and is based in Atlanta, Georgia. Through its subsidiaries, it deals with the generation, transmission and distribution of electricity. The company builds, purchases, owns and manages energy assets, including renewable energy facilities, and sells electricity on the wholesale market; and distributes natural gas in Illinois, Georgia, Virginia, and Tennessee, and provides marketing services, gas wholesale services, and pipeline investments. It also provides products and services in the field of energy efficiency and utility infrastructure. Market capitalization: $64.06B

6. Dominion Energy (D)

Dominion Energy, Inc. was founded in 1983 and is headquartered in Richmond, Virginia. The company was formerly known as Dominion Resources, Inc. and changed its name to Dominion Energy, Inc. in May 2017. It produces and transports energy. Market capitalization: $60.28B

7. ConocoPhillips (COP)

The company was founded in 1917 and is headquartered in Houston, Texas. It explores, produces, transports and sells crude oil, bitumen, natural gas, liquefied natural gas (LNG) and liquefied natural gas worldwide. The company mainly deals with conventional and closed oil fields, shale gas, heavy oil, LNG, oil sands and other mining operations. Market capitalization: $57.68B

8. American Electric Power (AEP)

American Electric Power Company, Inc. was founded in 1906 and is headquartered in Columbus, Ohio. It is a publicly owned electricity generation holding company that generates, transmits and distributes electricity for sale to retail and wholesale customers in the United States. The company generates electricity from coal and lignite, natural gas, nuclear and hydropower, as well as solar, wind and other sources. The company owns, leases or controls approximately 4,004 wagons, 468 barges, 8 towing boats and a coal transshipment terminal with a capacity of approximately 18 million tons per year.
Market capitalization: $40.48B

9. Exelon (EXC)

The company was founded in 1999 and is based in Chicago, Illinois. It is involved in the production and sale of energy in the United States and Canada. It owns nuclear, fossil, wind, hydroelectric, biomass and solar power plants. The company also sells electricity to wholesale and retail customers; and sells natural gas, renewable energy and other energy-related products and services. Market capitalization: $40.16B

10. Sempra Energy (SRE)

The company was founded on October 11, 1996 and is headquartered in San Diego, California. It operates as an energy services holding company that deals with the development and operation of energy infrastructure and the provision of electricity and gas services in the United States and around the world. It operates through the following segments: San Diego Gas & Electric Company (SDG & E), Southern California Gas Company (SoCalGas), Sempra Texas Utilities, Sempra Mexico and Sempra LNG.

11. Market capitalization: $36.37B

1. Xcel Energy (XEL) Xcel Energy Inc. was founded in 1909 and is headquartered in Minneapolis, Minnesota. Through its subsidiaries, it produces, buys, transmits, distributes and sells electricity. Serves residential, commercial and industrial clients in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas and Wisconsin. The company sells electricity to approximately 3.7 million customers; and natural gas to approximately 2.1 million customers. Market capitalization: $35.10B

12. Kinder Morgan (KMI)

The company was formerly known as Kinder Morgan Holdco LLC and changed its name to Kinder Morgan, Inc. in February 2011. Kinder Morgan, Inc. was founded in 1936 and is headquartered in Houston, Texas. It operates as a North American energy infrastructure company. The company operates within the Natural Gas Pipelines, Product Pipelines, Terminals and CO2 segments. It owns and operates approximately 83,000 miles of pipelines and 147 terminals. Market capitalization: $34.68 B

13. EOG Resources (EOG)

EEA Resources, Inc. was founded in 1985 and is headquartered in Houston, Texas. The company was formerly known as Enron Oil & Gas company. As at December 31, 2019, it had an estimated total proven net reserves of 3,329 million barrels of crude oil equivalent, including 1,694 million barrels (MMBbl) of crude oil and condensate reserves; 740 MMBbl of natural gas reserves; and 5.370 billion cubic feet of natural gas reserves. Market capitalization: $32.30B

14. Phillips 66 (PSX)

Phillips 66 was founded in 1875 and is headquartered in Houston, Texas. It operates as an energy production and logistics company. It operates in four segments: Midstream, Chemicals, Refining and Marketing and Specialties (M&S). Market capitalization: $31.95B

15. Eversource Energy (ES)

Eversource Energy is a utility and energy holding company that was founded in 1927 and is headquartered in Springfield, Massachusetts. The company was formerly known as Northeast Utilities and changed its name to Eversource Energy in April 2015. The company operates regulated water utilities. It also provides water services to approximately 229,000 customers. Serves residential, commercial, industrial, and council clients, and fire protection clients in Connecticut, Massachusetts, and New Hampshire in the United States. Market capitalization: $30.68B

16. Public Service Enterprise Group Incorporated (PEG)

Public Service Enterprise Group Incorporated was founded in 1985 and is headquartered in Newark, New Jersey. It operates in two segments, PSE & G and PSEG Power. Its products and services include energy, power, ancillary services, and emission allowances and congestion credits. Through its subsidiaries, it operates as an energy company primarily in the North East and Mid-Atlantic United States. Market capitalization: $29.33B

17. WEC Energy Group (WEC)

WEC Energy Group, Inc. was founded in 1981 and is based in Milwaukee, Wisconsin. The company was formerly known as Wisconsin Energy Corporation and changed its name to WEC Energy Group, Inc. as of June 2015. Operates in six business segments: Wisconsin, Illinois, Other States, Electricity Transmission, Non-Municipal Energy Infrastructure, and Corporate and Other. Offers electricity to approximately 1.6 million residential, small and large, commercial and industrial and other customers; and natural gas to 2.9 million residential, commercial and industrial customers. Market capitalization:$27.81B

18. Pioneer Natural Resources (PXD)

Pioneer Natural Resources was founded in 1997 and is headquartered in Irving, Texas. The company explores, develops and produces crude oil, natural gas liquids (NGL) and gas. It operates primarily in the Permian Basin in west Texas. It operates as an independent oil and gas exploration and production company in the United States. Market capitalization: $27.66B

19. Marathon Petroleum (MPC)

The company was founded in 1887 and is based in Findlay, Ohio. Together with its subsidiaries, it deals with refining, marketing, retailing and transportation of petroleum products, mainly in the United States. The company also exports its refined products. As of September 30, 2020, he owned, leased, and interest in approximately 17,200 miles of crude oil and refined product pipelines, and owned and operated 3,854 general grocery stores; and had approximately 7,000 brand name outlets run by independent traders in the 35 states of the United States, the District of Columbia and Mexico. Market capitalization: $27.39B

20. Williams (WMB)

The Williams Companies, Inc. was founded in 1908 and is headquartered in Tulsa, Oklahoma. It operates through the Atlantic Gulf, North East G&P and West segments. The company owns and operates 30,000 miles of pipeline, 28 process plants, 7 fractionation plants, and approximately 23 million barrels of NGL storage capacity. Market capitalization: $26.24B

21. Valero (VLO)

Valero Energy Corporation została założona w 1980 roku i ma siedzibę w San Antonio w Teksasie. Firma była wcześniej znana jako Valero Refining and Marketing Company i zmieniła nazwę na Valero Energy Corporation w sierpniu 1997 roku. Na dzień 31 grudnia 2019 roku spółka posiadała 15 rafinerii o łącznej przepustowości około 3,15 mln baryłek dziennie. Sprzedaje swoje produkty rafinowane na hurtowych rynkach regałowych i hurtowych; oraz przez około 7 000 punktów sprzedaży pod markami Valero, Beacon, Diamond Shamrock, Shamrock, Ultramar i Texaco. Firma produkuje i sprzedaje również etanol, ziarna gorzelnicze i olej kukurydziany, głównie do rafinerii i mieszalników benzyny, a także do odbiorców pasz dla zwierząt. Jest właścicielem i operatorem 14 wytwórni etanolu o łącznej zdolności produkcyjnej około 1,73 miliarda galonów etanolu rocznie. Market capitalization: $23.91 B

22. DTE Energy (DTE)

The company was founded in 1903 and is based in Detroit, Michigan. It operates as a diversified energy company dealing in the sale, distribution and storage of electricity and natural gas. It operates in the following segments: Electricity, gas, Non-utility activities, and Corporates and others. Market capitalization: $23.78B

23. Consolidated Edison (ED)

The company was founded in 1823 and is headquartered in New York, New York. The company sells electricity primarily to industrial, commercial, residential and government customers. The company provides electrical services to approximately 3.5 million customers in New York City and Westchester County; gas to approximately 1.1 million customers in Manhattan, the Bronx, parts of Queens, and Westchester County; and to about 1,589 customers in some parts of Manhattan. In addition, it owns, operates and develops renewable and energy infrastructure projects; provides energy-related products and services to wholesale and retail customers, and invests in electricity and gas transmission projects. Market capitalization: $23.46B

24. Edison International (EIX)

The company was founded in 1886 and is headquartered in Rosemead, California. It is involved in the generation, transmission and distribution of electricity in the United States. Generates electricity from hydroelectric power plants, diesel / LPG, natural gas, nuclear and photovoltaic sources. It supplies electricity mainly to residential, commercial, industrial, agricultural and other consumers, as well as to public authorities through transmission and distribution networks. Market capitalization: $22.50B

25. Pacific Gas and Electric Company (PCG)

The company was founded in 1995 and is headquartered in San Francisco, California. PG&E Corporation, through its subsidiary Pacific Gas and Electric Company, sells and supplies electricity and natural gas to customers in Northern and Central California, United States. It produces electricity using nuclear, hydroelectric, fossil fuels, fuel cells and photovoltaic sources. It serves residential, commercial, industrial and agricultural customers, as well as natural gas-fired electricity generation facilities. Market capitalization: $21.75B

26. PPL Corporation (PPL)

The company was founded in 1994 and is based in Allentown, Pennsylvania. It is a holding company engaged in the production, transmission and distribution of electricity. It operates in the following segments: UK Regulated, Kentucky Regulated, and Pennsylvania Regulated. Serves approximately 418,000 consumers of electricity and 329,000 natural gas in Louisville and adjacent areas in Kentucky; 530,000 electricity consumers in central, south-eastern and western Kentucky; and 28,000 electrical customers in 5 counties in southwest Virginia. The company also provides electricity services to approximately 1.4 million customers in Pennsylvania; operates electricity distribution networks in Great Britain; produces electricity from coal, gas, water and solar power in Kentucky; and wholesalers electricity to 2 municipalities in Kentucky. Market capitalization: $21.47B

27. Occidental Petroleum (OXY)

Occidental Petroleum Corporation was founded in 1920 and is headquartered in Houston, Texas. Together with its subsidiaries, it is involved in the acquisition, exploration and development of oil and gas fields in the United States, the Middle East and Latin America. It operates in the following segments: Oil and Gas, Chemicals, and Midstream and Marketing. Market capitalization: $20.01 B

28. ONEOK (OKE)

Firma została założona w 1906 roku i ma siedzibę w Tulsa w stanie Oklahoma. Działa w ramach segmentów Zbieranie i Przetwarzanie Gazu Ziemnego, Płyny Gazu Ziemnego i Rurociągi Gazu Ziemnego. ONEOK, Inc. wraz ze swoimi spółkami zależnymi zajmuje się gromadzeniem, przetwarzaniem, przechowywaniem i transportem gazu ziemnego w Stanach Zjednoczonych. Market capitalization: $19.41B

29. Entergy (ETR)

Entergy Corporation was founded in 1949 and is headquartered in New Orleans, Louisiana. Together with its subsidiaries, it produces and distributes electricity in the United States. The company supplies electricity to 2.9 million customers in Arkansas, Louisiana, Mississippi and Texas. Market capitalization: $18.99B

30. Ameren (AEE)

The company was founded in 1881 and is based in St. Louis, Missouri. It operates in four segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas and Ameren Transmission. As at September 28, 2020, it served approximately 2.4 million electricity consumers and approximately 900,000 natural gas consumers. The company serves residential, commercial and industrial clients. Market capitalization: $18.41B

31. Energy Transfer LP (ET)

Energy Transfer LP was founded in 2002 and is based in Dallas, Texas. The company was previously known as Energy Transfer Equity, L.P. and changed its name to Energy Transfer LP in October 2018. The company owns and operates approximately 9,400 miles of natural gas pipelines and three natural gas storage facilities in Texas; and 12,500 miles of interstate natural gas pipelines. It sells natural gas to utilities, independent power plants, local distributors, industrial end users and other marketing companies. Market capitalization: $17.86B

32. FirstEnergy (FE)

FirstEnergy Corp. was founded in 1996 and is based in Akron, Ohio. It deals with the generation, transmission and distribution of electricity as well as energy management and other energy-related services through its subsidiaries. It operates through the following business segments: Regulated Distribution, Regulated Broadcasting, and Corporation The company serves approximately six million customers in Ohio, Pennsylvania, West Virginia, Maryland, New Jersey and New York. Market capitalization: $17.31B

33. AES Corporation (AES)

AES Corporation was founded in 1981 and is headquartered in Arlington, Virginia. The company was formerly known as Applied Energy Services, Inc. and changed its name to The AES Corporation in April 2000. It is committed to providing power generation and utilities services through its renewable and thermal power generation and distribution facilities. The company also owns and / or operates tools to generate or purchase, distribute, transmit and sell electricity to end customers in the residential, commercial, industrial and government sectors; produces and sells electricity on the wholesale market. Market capitalization: $16.63B

34. Cheniere Energy (LNG)

The company was founded in 1983 and is based in Houston, Texas. The company is involved in energy infrastructure and engages in activities related to liquefied natural gas (LNG) in the United States. The company also owns the Creole Trail Pipeline, a 94-mile pipeline connecting the Sabine Pass LNG Terminal to various interstate pipelines; and operates the Corpus Christi pipeline, a 23-mile natural gas delivery pipeline that connects the Corpus Christi LNG terminal with various interstate and interstate natural gas pipelines. He is also involved in the marketing of LNG and natural gas. Market capitalization: $15.70B

35. Evergy, Inc (EVRG)

The company was founded in 2015. It is a leading sustainable energy company with $ 36 billion in assets and operations in 24 US states. The company has two main lines of business: Avangrid Networks and Avangrid Renewables. Avangrid Networks owns eight utilities and gas utilities serving 3.2 million customers in New York and New England. Avangrid Renewables owns and operates 7.5 gigawatts of electricity, largely due to wind power, and is present in 22 states across the United States. Avangrid employs approximately 6,500 people. Supports the United Nations Sustainable Development Goals and has received the Ethisphere Compliance Leader Verification Award, a prestigious third party Ethics and Compliance Program Review. Market capitalization: $12.14B

36. CenterPoint Energy, Inc (CNP)

CenterPoint Energy, Inc. was founded in 1866 and is headquartered in Houston, Texas. The holding that produces and distributes energy, operates in the following segments: Houston Electric Transmission & Distribution (T&D); Indiana Electric Integrated; Distribution of natural gas; Energy services; Infrastructure services; Midstream investments; and corporate and other. Market capitalization: $11.92B

37. Atmos Energy (ATO)

Atmos Energy Corporation was founded in 1906 and is headquartered in Dallas, Texas. Together with its subsidiaries, the company handles the regulated distribution of natural gas, pipelines and warehouses in the United States. Its activities fall into two segments: Distribution and Pipelines and Storage. Market capitalization: $11.48B

38. Vistra Energy Corp (VST)

Vistra Corp. was founded in 1882 and is based in Irving, Texas. The company was previously known as Vistra Energy Corp. and changed its name to Vistra Corp. in July 2020. Through its subsidiaries, it operates in the field of electricity in the United States. The company sells electricity and natural gas to residential, commercial and industrial customers in 20 US states. He also deals with electricity generation, wholesale and purchase of energy, commodity risk management, fuel production and fuel logistics management. It serves approximately 4.6 million residential, commercial and industrial customers. Market capitalization: $10.19B

39. Magellan Midstream Partners (MMP)

Magellan Midstream Partners, L.P. was founded in 2000 and is headquartered in Tulsa, Oklahoma. The company operates in the refined products, crude oil and marine warehouses segments. Supports refined product pipelines that transport gasoline, distillates, aviation fuels and liquefied petroleum gases for independent refineries and integrated oil companies, wholesalers, retailers, traders, railways, airlines, biofuel producers and regional agricultural cooperatives; and provides services including unloading, unloading and loading of ethanol and biodiesel, additive injection, custom blending, laboratory testing and data services to shippers. Market capitalization: $10.09B

40. Diamondback Energy (FANG)

Diamondback Energy, Inc. was founded in 2007 and is headquartered in Midland, Texas. An independent oil and gas company focused on the acquisition, development, exploration and exploitation of unconventional and onshore oil and gas fields in the Permian Basin in west Texas. The company has a mine stake of approximately 814,224 acres gross and 24,304 net acres in net royalties in the Permian Basin and Eagle Ford Shale Shale; and owns, operates, develops and acquires midstream infrastructure assets such as 867 miles of crude oil pipelines, natural gas pipelines, and an integrated water system in the Midland and Delaware basins of the Perm Basin. Market capitalization: $9.466B

41. UGI Corp (UGI)

UGI Corporation was founded in 1882 and is headquartered in King of Prussia, Pennsylvania. It distributes, stores, transports and sells energy products and related services in the United States and around the world. Distributes propane to approximately 1.5 million residential, commercial / industrial, motor, agricultural and wholesale customers through 1,800 propane distribution points; sells, installs and services propane equipment, including heating systems and propane generators. Market capitalization: $7.724B

42. Plains All American Pipeline (PAA)

The company was founded in 1998 and is based in Houston, Texas. Through its subsidiaries, it carries out the transportation, storage, unloading and sale of crude oil, liquefied natural gas (NGL) and natural gas in the United States and Canada. The company operates in three segments: Transport, Facilities, and Supply and Logistics. Market capitalization: $6.527B

43. OGE Energy Corp (OGE)

The company was founded in 1902 and is headquartered in Oklahoma City, Oklahoma. Together with its subsidiaries, it acts as an energy and energy services provider that offers physical supply and related services for electricity and natural gas, primarily in the South Central United States. It operates in two segments, Electric Utility and Natural Gas Midstream Operations. Market capitalization: $6.331B

44. HollyFrontier Crop (HFC)

HollyFrontier Corporation was founded in 1947 and is headquartered in Dallas, Texas. The company was formerly known as Holly Corporation and changed its name to HollyFrontier Corporation as a result of its merger with Frontier Oil Corporation in July 2011. It operates as an independent oil refinery in the United States. The company operates in three segments: refining, lubricants and specialist products, and HEP. It mainly produces high-quality light products such as gasoline, diesel and jet fuel, as well as specialty lubricants, as well as specialty and modified asphalt. The company offers its products to other refineries, convenience store chains, independent vendors, retailers, truck parking chains, wholesalers, railroads, government entities, contractors or pavers, and commercial airlines. Market capitalization: $4.869B

45. PBF Energy Inc. (PBF)

PBF Energy Inc. was founded in 2008 and is headquartered in Parsippany, NJ. Together with its subsidiaries, it deals with the refining and supply of petroleum products. The company operates in two segments: refining and logistics. It produces gasoline, ultra-low sulfur diesel, heating oil, diesel, aviation fuel, lubricants, petrochemicals and asphalt, as well as unbranded transport fuels, petrochemicals, blending components and other petroleum products. The company sells its products in the Northeast, Midwest, Gulf Coast and West Coast of the United States, as well as in other regions of the United States, Canada and Mexico. Market capitalization: $1.004B Conclusion

Companies operating in the field of energy often specialize in exploration, extraction, transport, refining as well as the sale and distribution of hydrocarbons or the generation of electricity in adapted power plants. A significant proportion of “public utility” companies operate in the distribution of natural gas for heating and electricity generation in the household. The largest companies have greater opportunities and room to show off, engaging in various activities of both sectors – both Energy and Utilities, and even related engineering and industrial activities. But both segments are under pressure to become cleaner and move away from fossil fuels to more renewable sources. The development of solar and wind energy is gaining momentum, and many energy companies are declaring the greater part of their investments in this direction. For oil and gas companies, the emphasis on green energy is shifting towards natural gas, which has fewer harmful emissions, and new investment in emission reduction and carbon capture technologies.