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Top 20 Electricity, Oil & Gas Companies in US.

Schlumberger Limited

www.slb.com

Houston,  Texas,  United States 77056 (Map)

100,000 Employees

Schlumberger is the world's leading provider of technology for reservoir characterization, drilling, production, and processing to the oil and gas industry. Working in more than 85 countries and employing approximately 100,000 people who represent over 140 nationalities, S... more

Icahn Enterprises L.P.

www.ielp.com

New York City,  New York,  United States 10153 (Map)

74,225 Employees

Icahn Enterprises L.P. (NASDAQ: IEP), a master limited partnership, is a diversified holding company engaged in ten primary business segments: Investment, Automotive, Energy, Metals, Railcar, Gaming, Mining, Food Packaging, Real Estate and Home Fashion.  more

Exxon Mobil Corporation

www.exxonmobil.com

Irving,  Texas,  United States 75039 (Map)

71,100 Employees

ExxonMobil, the largest publicly traded international oil and gas company, uses technology and innovation to help meet the world's growing energy needs. ExxonMobil holds an industry-leading inventory of resources, is the largest refiner and marketer of petroleum products, ... more

Chevron Corporation

www.chevron.com

San Ramon,  California,  United States 94583 (Map)

55,200 Employees

Chevron Corporation is one of the world's leading integrated energy companies. Through its subsidiaries that conduct business worldwide, the company is involved in virtually every facet of the energy industry. Chevron explores for, produces and transports crude oil and na... more

Halliburton Company

www.halliburton.com

Houston,  Texas,  United States 77032 (Map)

50,000 Employees

Founded in 1919, Halliburton is one of the world's largest providers of products and services to the energy industry. With approximately 50,000 employees, representing 140 nationalities and operations in approximately 70 countries, the company serves the upstream oil and g... more

Marathon Petroleum Corporation

www.marathonpetroleum.com

Findlay,  Ohio,  United States 45840 (Map)

44,460 Employees

Headquartered in Findlay, Ohio, Marathon Petroleum Corporation (MPC), together with its subsidiaries, including Marathon Petroleum Company LP, Speedway LLC and MPLX LP, is one of the largest petroleum product refiners, marketers and transporters in the United States. MPC ... more

National Oilwell Varco Inc

www.nov.com

Houston,  Texas,  United States 77036 (Map)

36,627 Employees

National Oilwell Varco (NYSE: NOV) is a leading provider of technology, equipment, and services to the global oil and gas industry. NOV has been pioneering innovations that improve the cost-effectiveness, efficiency, safety, and environmental impact of oil and gas operatio... more

Exelon Corporation

www.exeloncorp.com

Chicago,  Illinois,  United States 60690 (Map)

34,396 Employees

Exelon Corporation (NYSE: EXC) is a Fortune 100 energy company with the largest number of utilitycustomers in the U.S. Exelon does business in 48 states, the District of Columbia and Canada and had 2016 revenue of $31.4 billion. Exelon's six utilities deliver electricity a... more

Baker Hughes Inc.

www.bakerhughes.com

Houston,  Texas,  United States 77073 (Map)

33,000 Employees

Baker Hughes is a leading supplier of oilfield services, products, technology and systems to the worldwide oil and natural gas industry. The Company's 34,000 employees today work in more than 80 countries helping customers find, evaluate, drill, produce, transport and proc... more

Southern Company

www.southerncompany.com

Atlanta,  Georgia,  United States 30308 (Map)

32,015 Employees

Southern Company (NYSE: SO) is America's premier energy company, with 44,000 MW of generating capacity and 1,500 billion cubic feet of combined natural gas consumption and throughput volume serving 9 million electric and gas utility customers through its subsidiaries. The ... more

EMCOR Group , Inc.

www.emcorgroup.com

Norwalk,  Connecticut,  United States 06851 (Map)

31,000 Employees

A Fortune 500 company, EMCOR Group, Inc. (NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and building services. A provider of critical infrastructure systems, EMCOR gives life to new structures and sustains life in ... more

Energy Transfer Partners, L.P.

www.energytransfer.com

Dallas,  Texas,  United States 75219 (Map)

30,992 Employees

Energy Transfer Partners, L.P. (NYSE: ETP) is a master limited partnership that owns and operates one of the largest and most diversified portfolios of energy assets in the United States. ETP's subsidiaries include Panhandle Eastern Pipe Line Company, LP (the successor of ... more

Marathon Oil Corporation

www.marathonoil.com

Houston,  Texas,  United States 77056 (Map)

30,360 Employees

Marathon Oil Corporation is an international energy company engaged in exploration and production, oil sands mining and integrated gas. At the end of 2010, Marathon Oil had net proved reserves of more than 1.6 billion barrels. Based in Houston, Texas, the Company has prov... more

Duke Energy Corp.

www.duke-energy.com

Charlotte,  North Carolina,  United States 28202 (Map)

28,798 Employees

Duke Energy is the largest electric power holding company in the United States. Its regulated utility operations serve approximately 7.3 million electric customers located in six states in the Southeast and Midwest, representing a population of approximately 23 million peo... more

Quanta Services Inc

www.quantaservices.com

Houston,  Texas,  United States 77056 (Map)

28,100 Employees

Quanta Services is a leading specialized contracting services company, delivering infrastructure solutions for the electric power, oil and gas and communications industries. Quanta's comprehensive services include designing, installing, repairing and maintaining energy and... more

Pacific Gas And Electric Company

www.pgecorp.com

San Francisco,  California,  United States 94177 (Map)

24,000 Employees

Pacific Gas and Electric Company, a subsidiary of PG&E Corporation (NYSE:PCG), is one of the largest combined natural gas and electric energy companies in the United States. Based in San Francisco, with more than 20,000 employees, the company delivers some of the nati... more

Cameron

www.c-a-m.com

Houston,  Texas,  United States 77027 (Map)

23,000 Employees

Cameron is a leading provider of flow equipment products, systems and services to worldwide oil, gas and process industries. Leveraging its global manufacturing, engineering and sales and service network, Cameron works with drilling contractors, oil & gas producers, pi... more

Sunoco , Inc.

www.sunocolp.com

Houston,  Texas,  United States 77073 (Map)

22,500 Employees

Sunoco, Inc. (Sunoco), through its subsidiaries, is principally a petroleum refiner and marketer and chemicals manufacturer with interests in logistics and cokemaking. Sunoco's petroleum refining and marketing operations include the manufacturing and marketing of a full ra... more

The AES Corporation

www.aes.com

Arlington,  Virginia,  United States 22203 (Map)

21,000 Employees

The AES Corporation (NYSE: AES) is a Fortune 200 global power company. We provide affordable, sustainable energy to 17 countries through our diverse portfolio of distribution businesses as well as thermal and renewable generation facilities. Our workforce of 19,000 people ... more

American Electric Power Company Inc

www.aep.com

Columbus,  Ohio,  United States 43215 (Map)

17,634 Employees

American Electric Power is one of the largest electric utilities in the United States, delivering electricity and custom energy solutions to nearly 5.4 million customers in 11 states. AEP owns the nation's largest electricity transmission system, a more than 40,000-mile ne... more

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