# Top 100 energy companies in North America

Tamtam tracks 3,542 energy companies headquartered in North America. This list ranks the 100 largest by number of employees on LinkedIn, led by Brookfield Asset Management, Tesla Austria GmbH and Koch Ag & Energy Solutions. Their median headcount is 12,253. Half of them were founded in 1944 or later. The most common headquarters are Houston (22), Calgary (4) and Columbus (3).

These North American companies are primarily involved in energy, manufacturing, and financial services, with a focus on large, established enterprises. Noteworthy examples include Brookfield Asset Management, which provides investment management services for real estate and utilities, and Tesla Austria GmbH, focused on sustainable energy through electric vehicles. Koch Ag & Energy Solutions operates diverse global industries, while GE advances aviation and energy technologies. SLB develops advanced technologies for energy access, and Baker Hughes provides innovative energy solutions.

A common thread among many of these companies is their long history, with several founded in the early to mid-20th century. A significant cluster of headquarters is observed in Houston, indicating a concentration of oil and gas as well as energy technology firms in that city.

🌍 North America · 100 companies · Updated Nov 15, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Brookfield Asset Management](https://www.tamtam.ai/c/brookfield-asset-management) (brookfield.com)<br>Provides investment management services for businesses including real estate and utilities. Focused on asset management across various sectors. | Financial Services | 🇨🇦 New York | 180,000 | 1899 |
| 2 | [Tesla Austria GmbH](https://www.tamtam.ai/c/tesla-austria-gmbh) (tesla.com)<br>A company focused on accelerating the world's transition to sustainable energy through electric vehicles and clean energy generation and storage solutions | Manufacturing | 🇺🇸 Austin | 128,000 | 2003 |
| 3 | [Koch Ag & Energy Solutions](https://www.tamtam.ai/c/koch-ag-and-energy-solutions) (kochinc.com)<br>Operating diverse global industries worldwide, this company focuses on improving essential aspects of life such as food, clothing, water, transportation, and technology, with 120,000 employees. | Oil and Gas | 🇺🇸 Wichita | 120,000 | 1940 |
| 4 | [GE](https://www.tamtam.ai/c/ge) (ge.com)<br>Focus on advancing aviation and energy industries through innovative technologies and solutions shared via specialized aerospace and energy platforms. | Industrial Machinery Manufacturing | 🇺🇸 Boston | 99,488 |  |
| 5 | [SLB](https://www.tamtam.ai/c/slb-houston) (slb.com)<br>Global innovators developing advanced technologies to unlock energy access while reducing carbon emissions through sustainable engineering and diverse technical change maker expertise. | Technology, Information and Internet | 🇺🇸 Houston | 79,707 |  |
| 6 | [GE Vernova](https://www.tamtam.ai/c/ge-vernova) (linktr.ee)<br>A purpose-built company focused on electrifying the planet and decarbonizing it through a diverse portfolio of energy businesses, ensuring reliable and sustainable energy | Energy Technology | 🇺🇸 Boston | 70,646 |  |
| 7 | [Baker Hughes](https://www.tamtam.ai/c/baker-hughes-houston) (bakerhughes.com)<br>Energy technology company providing innovative solutions globally, focusing on safety, efficiency, and sustainability in the energy and industrial sectors | Energy Technology | 🇺🇸 Houston | 67,440 |  |
| 8 | [Caterpillar Inc.](https://www.tamtam.ai/c/caterpillar-inc) (caterpillar.com)<br>A global leader in manufacturing construction and mining equipment, engines, turbines, and locomotives, focused on sustainability and providing value to customers worldwide | Machinery Manufacturing | 🇺🇸 Irving | 62,810 | 1925 |
| 9 | [Halliburton](https://www.tamtam.ai/c/halliburton) (halliburton.com)<br>Collaborates to engineer solutions maximizing energy asset value, from locating hydrocarbons, managing data, drilling, evaluating, and constructing wells, to optimizing production. | Oil and Gas | 🇺🇸 Houston | 60,277 | 1919 |
| 10 | [Cummins Inc.](https://www.tamtam.ai/c/cummins-inc) (cummins.com)<br>empowering diverse professionals through career growth, innovation, and development in engineering, manufacturing, marketing, and supply chain roles worldwide | Motor Vehicle Manufacturing | 🇺🇸 Columbus | 60,000 |  |
| 11 | [Chevron](https://www.tamtam.ai/c/chevron) (chevron.com)<br>The company values its people and their innovation in tackling energy challenges, fostering open and respectful communication on LinkedIn | Oil and Gas | 🇺🇸 Houston | 55,495 |  |
| 12 | [Amentum](https://www.tamtam.ai/c/amentum) (amentum.com)<br>Amentum is a global leader in engineering, project management, and solutions integration, specializing in modernizing critical missions worldwide with speed and confidence | Defense and Space Manufacturing | 🇺🇸 Chantilly | 50,000 |  |
| 13 | [Circle K](https://www.tamtam.ai/c/circle-k) (circlek.com)<br>Global convenience and fuel retail business providing everyday services across fourteen thousand locations in twenty-six countries to make customer journeys a little easier. | Retail | 🇨🇦 Laval | 47,769 | 1951 |
| 14 | [PEMEX](https://www.tamtam.ai/c/pemex) (pemex.com)<br>A leading Mexican company in the oil industry, involved in exploration, production, distribution, and petrochemicals Major contributor to the country's economy and social development | Oil and Gas | 🇲🇽 Mexico City | 45,692 | 1938 |
| 15 | [ADM](https://www.tamtam.ai/c/adm) (adm.com)<br>Global nutrition company transforming industries with plant-based solutions, sustainable practices, and cutting-edge innovations for a healthier, more environmentally friendly future | Food and Beverage Manufacturing | 🇺🇸 Chicago | 42,789 | 1902 |
| 16 | [NOV](https://www.tamtam.ai/c/nov) (nov.com)<br>Provider of technology-driven solutions for the global energy industry, enabling safe energy production, environmental impact reduction, and advancing towards a more sustainable future | Oil and Gas | 🇺🇸 Houston | 37,645 |  |
| 17 | [GE Aerospace](https://www.tamtam.ai/c/ge-aerospace) (geaerospace.com)<br>A global provider of jet and turboprop engines, components, and systems for various types of aircraft, enhancing the world through flight | Aviation and Aerospace Component Manufacturing | 🇺🇸 Cincinnati | 37,191 |  |
| 18 | [Koch Engineered Solutions](https://www.tamtam.ai/c/koch-engineered-solutions) (kochengineeredsolutions.com)<br>A provider of uniquely engineered solutions in construction, mass transfer, combustion control, filtration, materials applications, and automation as a subsidiary of Koch Industries | Oil and Gas | 🇺🇸 Wichita | 29,952 |  |
| 19 | [WM](https://www.tamtam.ai/c/wm) (wm.com)<br>Provides comprehensive waste collection, disposal, recycling, and renewable energy solutions tailored to municipal, commercial, industrial, and residential customers. | Environmental Services | 🇺🇸 Houston | 28,255 |  |
| 20 | [Dominion Energy](https://www.tamtam.ai/c/dominion-energy) (dominionenergy.com)<br>A company headquartered in Richmond, Va, providing electricity and natural gas to 7 million customers in 15 states with a focus on sustainability and safety | Utilities | 🇺🇸 Richmond | 27,676 |  |
| 21 | [PT PLN (Persero)](https://www.tamtam.ai/c/pt-pln-persero) (pln.co.id)<br>Sole provider of electricity in Indonesia, striving to improve service quality, with a long history and significant assets in the industry | Utilities | 🇺🇸 Jakarta Selatan | 26,545 | 1945 |
| 22 | [Duke Energy Corporation](https://www.tamtam.ai/c/duke-energy-corporation) (duke-energy.com)<br>Electric and natural gas utilities serving millions, focusing on clean energy transition, grid upgrades, and net-zero emissions goals. | Utilities | 🇺🇸 Charlotte | 25,788 |  |
| 23 | [Carrier](https://www.tamtam.ai/c/carrier) (carrier.com)<br>A global leader in intelligent climate and energy solutions, pioneering new technologies and industries for a safer, sustainable, and comfortable world | Wholesale Building Materials | 🇺🇸 Palm Beach Gardens | 25,379 |  |
| 24 | [Pacific Gas and Electric Company](https://www.tamtam.ai/c/pacific-gas-and-electric-company) (pge.com)<br>Transmission and delivery of natural gas and electricity to approximately 15 million customers across a large service area in California. | Utilities | 🇺🇸 Oakland | 23,550 |  |
| 25 | [McDermott International, Ltd](https://www.tamtam.ai/c/mcdermott-international-ltd) (mcdermott.com)<br>Engineering and construction solutions for global energy industry, focusing on sustainable energy infrastructure and energy transition projects worldwide. | Oil and Gas | 🇺🇸 Houston | 23,162 |  |
| 26 | [Republic Services](https://www.tamtam.ai/c/republic-services) (republicservices.com)<br>An industry leader in environmental services, providing innovative solutions for waste management, recycling, and sustainability to create cleaner and more sustainable communities | Environmental Services | 🇺🇸 Phoenix | 21,081 | 1998 |
| 27 | [Casey's](https://www.tamtam.ai/c/casey-s) (caseys.com)<br>A convenience store chain founded in 1959, known for clean stores, friendly service, fresh food, and a focus on small communities | Food and Beverage Services | 🇺🇸 Ankeny | 20,674 | 1968 |
| 28 | [Exelon](https://www.tamtam.ai/c/exelon) (exeloncorp.com)<br>A leading utility company providing reliable and affordable energy to over 10 million customers in urban areas across multiple states, with a commitment to sustainability and community support | Utilities | 🇺🇸 Chicago | 20,291 |  |
| 29 | [Tenaris](https://www.tamtam.ai/c/tenaris) (tenaris.com)<br>A leading supplier of tubes and services for the energy industry and other industrial applications, with a global workforce committed to continuous improvement | Oil and Gas | 🇺🇸 Houston | 20,000 | 2002 |
| 30 | [Air Products](https://www.tamtam.ai/c/air-products) (airproducts.com)<br>Supplier of industrial gases serving over 250,000 customers in more than 50 countries worldwide with diverse applications. | Chemical Manufacturing | 🇺🇸 Allentown | 20,000 | 1940 |
| 31 | [Cameron Products](https://www.tamtam.ai/c/cameron-products) (slb.com)<br>A leading provider of flow equipment products, systems, and services for the global oil, gas, and process industries, with a strong global network | Oil and Gas | 🇺🇸 Houston | 18,396 |  |
| 32 | [GE Power](https://www.tamtam.ai/c/ge-power) (gepower.com)<br>A global energy leader offering technology, solutions, and services spanning the energy value chain, serving customers in over 150 countries | Renewable Energy Semiconductor Manufacturing | 🇺🇸 Schenectady | 17,248 |  |
| 33 | [Marathon Petroleum Corporation](https://www.tamtam.ai/c/marathon-petroleum-corporation) (marathonpetroleum.com)<br>Operates the nation's largest refining system, markets petroleum products, and manages midstream assets for gathering, processing, and transportation. | Oil and Gas | 🇺🇸 Findlay | 17,048 | 1887 |
| 34 | [ConocoPhillips](https://www.tamtam.ai/c/conocophillips) (conocophillips.com)<br>A global oil and gas company focusing on safely finding and delivering energy worldwide while fostering a great workplace and community | Oil and Gas | 🇺🇸 Houston | 16,478 | 2012 |
| 35 | [Oxy](https://www.tamtam.ai/c/oxy) (oxy.com)<br>An international energy company with assets in the US, Middle East, and North Africa, focused on oil production, midstream services, chemical manufacturing, and carbon reduction technologies | Oil and Gas | 🇺🇸 Houston | 16,319 |  |
| 36 | [NRG Energy](https://www.tamtam.ai/c/nrg-energy) (nrg.com)<br>Provides innovative natural gas, electricity, and smart home energy solutions to a diverse range of customers across North America. | Consumer Services | 🇺🇸 Houston | 16,171 | 1989 |
| 37 | [Hydro Québec](https://www.tamtam.ai/c/hydro-quebec) (hydroquebec.com)<br>Production, transmission, and distribution of electricity primarily from renewable hydroelectric sources, including research and technology development in energy efficiency. | Renewable Energy Power Generation | 🇨🇦 Montreal | 16,160 | 1944 |
| 38 | [Love's Travel Stops](https://www.tamtam.ai/c/love-s-travel-stops) (loves.com)<br>Family-owned company operating over 600 travel stops across 42 states, emphasizing clean facilities, friendly service, and strong core values. | Retail | 🇺🇸 Oklahoma City | 15,823 | 1964 |
| 39 | [LyondellBasell](https://www.tamtam.ai/c/lyondellbasell-houston) (lyondellbasell.com)<br>Leading global chemical company producing innovative polymers and polyolefins for sustainable transportation, food safety, clean water, and healthcare applications. | Chemical Manufacturing | 🇺🇸 Houston | 15,172 | 2007 |
| 40 | [Suncor](https://www.tamtam.ai/c/suncor) (suncor.com)<br>Commercial oil sands development, upgrading, offshore oil and gas production, petroleum refining, and product marketing under Petro-Canada brand. | Oil and Gas | 🇨🇦 Calgary | 14,758 | 1967 |
| 41 | [Flowserve Corporation](https://www.tamtam.ai/c/flowserve-corporation) (flowserve.com)<br>Global manufacturer of pumps, valves, and seals with a rich heritage, providing innovative solutions for industries worldwide through experience, leadership, and creativity | Industrial Machinery Manufacturing | 🇺🇸 Irving | 14,750 | 1997 |
| 42 | [Phillips 66](https://www.tamtam.ai/c/phillips-66) (phillips66.com)<br>A global energy company focused on manufacturing petroleum products, natural gas processing, and petrochemical production, prioritizing safety, honor, and commitment | Oil and Gas | 🇺🇸 Houston | 14,000 |  |
| 43 | [Oceaneering](https://www.tamtam.ai/c/oceaneering) (oceaneering.com)<br>Global technology company providing engineered services, products, and robotic solutions to offshore energy, defense, aerospace, and manufacturing industries worldwide | Oil and Gas | 🇺🇸 Houston | 13,838 | 1964 |
| 44 | [Constellation](https://www.tamtam.ai/c/constellation-baltimore) (constellationenergy.com)<br>Leader in clean energy production and services, accelerating transition to carbon-free future through diverse energy portfolio, sustainability initiatives, and technology investments | Utilities | 🇺🇸 Baltimore | 13,291 |  |
| 45 | [American Electric Power](https://www.tamtam.ai/c/american-electric-power) (aep.com)<br>The company is focused on reducing carbon footprint, empowering communities, developing workforce, shifting to clean energy sources, and building stronger communities for the future | Utilities | 🇺🇸 Columbus | 13,166 |  |
| 46 | [Westinghouse Electric Company](https://www.tamtam.ai/c/westinghouse-electric-company) (westinghousenuclear.com)<br>Global leader in providing safe and innovative nuclear technology, offering reliable power plants, fuel, automation, and services with a focus on safety and sustainability | Utilities | 🇺🇸 Cranberry Township | 12,786 | 1886 |
| 47 | [Southern California Edison (SCE)](https://www.tamtam.ai/c/southern-california-edison-sce) (sce.com)<br>A leading electric utility in Southern California focused on bringing clean and renewable energy sources to reduce emissions and promote innovation | Utilities | 🇺🇸 Rosemead | 12,652 | 1886 |
| 48 | [NextEra Energy, Inc.](https://www.tamtam.ai/c/nextera-energy-inc) (nexteraenergy.com)<br>Leading electric utility company providing reliable electricity to millions, developing diverse energy sources including natural gas, nuclear, renewables, and battery storage. | Utilities | 🇺🇸 Juno Beach | 12,649 |  |
| 49 | [Trane](https://www.tamtam.ai/c/trane) (trane.com)<br>It specializes in building technology and energy solutions, offering innovative technologies and personalized solutions for current and future needs. | Industrial Machinery Manufacturing | 🇺🇸 | 12,282 | 1913 |
| 50 | [Entergy](https://www.tamtam.ai/c/entergy) (entergy.com)<br>This company provides safe, affordable, and reliable energy to the Middle South region, with a focus on clean power generation and community impact | Utilities | 🇺🇸 New Orleans | 12,253 | 1913 |
| 51 | [Comisión Federal de Electricidad](https://www.tamtam.ai/c/comision-federal-de-electricidad) (cfe.gob.mx)<br>A Mexican government company generates, transmits, distributes, and sells electricity to millions of customers using various technologies and energy sources | Renewable Energy Semiconductor Manufacturing | 🇲🇽 Cd. de México | 12,233 | 1937 |
| 52 | [CB&I](https://www.tamtam.ai/c/cb-and-i) (cbi.com)<br>Global leader in designing and building storage facilities, tanks, and terminals with extensive experience and expertise in delivering world-class storage solutions | Oil and Gas | 🇺🇸 The Woodlands | 12,096 |  |
| 53 | [Xcel Energy](https://www.tamtam.ai/c/xcel-energy) (xcelenergy.com)<br>providing reliable, resilient, and sustainable energy services to customers across eight states, focusing on excellent service and growth opportunities | Utilities | 🇺🇸 Minneapolis | 12,073 |  |
| 54 | [Southern Company](https://www.tamtam.ai/c/southern-company) (southerncompany.com)<br>A company and its subsidiaries provide clean, safe, reliable energy to 9 million customers with a focus on service excellence, community value, and net zero emissions by 2050 | Utilities | 🇺🇸 Atlanta | 12,062 |  |
| 55 | [Enbridge](https://www.tamtam.ai/c/enbridge) (enbridge.com)<br>This company is a leading provider of energy infrastructure, delivering reliable and affordable energy sources while investing in modern infrastructure and resilient communities | Oil and Gas | 🇨🇦 Calgary | 11,855 |  |
| 56 | [Black & Veatch](https://www.tamtam.ai/c/black-and-veatch) (bv.com)<br>An employee-owned global leader in building critical human infrastructure in Energy, Water, Telecommunications, and Government Services since 1915 | Engineering Services | 🇺🇸 Overland Park | 11,691 | 1915 |
| 57 | [H&P](https://www.tamtam.ai/c/h-and-p) (helmerichpayne.com)<br>Provider of advanced drilling technologies and solutions enhancing productivity, reliability, safety, and efficiency in land, international, and offshore operations. | Oil and Gas | 🇺🇸 Tulsa | 11,576 | 1920 |
| 58 | [Panasonic North America](https://www.tamtam.ai/c/panasonic-north-america) (bit.ly)<br>Leading technology partner providing integrated solutions across various industries like automotive, energy, retail, and more to create breakthrough technologies for a better life and world | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Newark | 11,525 | 1918 |
| 59 | [General Atomics](https://www.tamtam.ai/c/general-atomics) (ga.com)<br>Development of advanced technology solutions including unmanned aerial vehicles, research reactors, aircraft systems, MagLev transport, and fusion energy for global customers. | Defense and Space Manufacturing | 🇺🇸 San Diego | 11,213 |  |
| 60 | [Valero](https://www.tamtam.ai/c/valero) (valero.com)<br>Manufacturing, marketing transportation fuels, petrochemical products. Operating petroleum refineries, ethanol plants, and renewable diesel facilities for wholesale markets. | Oil and Gas | 🇺🇸 San Antonio | 11,096 | 1980 |
| 61 | [City of Seattle](https://www.tamtam.ai/c/city-of-seattle) (seattle.gov)<br>Providing diverse public services across multiple departments to support community well-being, infrastructure, and inclusive city development. | Government Administration | 🇺🇸 Seattle | 10,924 |  |
| 62 | [Sunrun](https://www.tamtam.ai/c/sunrun) (sunrun.com)<br>Provides a modern energy experience, offering freedom to power life with reliable, affordable solar energy directly from the sun for homes. | Services for Renewable Energy | 🇺🇸 San Francisco | 10,677 | 2007 |
| 63 | [Canadian Natural Resources Limited (CNRL)](https://www.tamtam.ai/c/canadian-natural-resources-limited-cnrl) (cnrl.com)<br>Global independent crude oil and natural gas producer with diverse operations in North America, North Sea, and Offshore Africa. | Oil and Gas | 🇨🇦 Calgary | 9,936 | 1989 |
| 64 | [Ontario Power Generation](https://www.tamtam.ai/c/ontario-power-generation) (opg.com)<br>Leading clean power generator advancing clean energy innovations, striving for a net-zero future with diverse electricity generation fleet in Ontario and the United States | Utilities | 🇨🇦 Toronto | 9,878 | 1999 |
| 65 | [Con Edison](https://www.tamtam.ai/c/con-edison) (coned.com)<br>Providing reliable electricity to millions, focusing on clean energy transition, energy efficiency, and infrastructure resilience against extreme weather. | Utilities | 🇺🇸 New York | 9,822 |  |
| 66 | [CHS Inc.](https://www.tamtam.ai/c/chs-inc-sunfish-lake) (chsinc.com)<br>A global agribusiness offering energy, grains, foods, and agricultural services to farmers, ranchers, and cooperatives for business growth and sustainability | Farming | 🇺🇸 Minnesota | 9,750 |  |
| 67 | [DTE Energy](https://www.tamtam.ai/c/dte-energy) (dteenergy.com)<br>Provides diversified energy solutions including renewable energy, emission control technologies, and energy services primarily serving Michigan communities. | Utilities | 🇺🇸 Detroit | 9,635 |  |
| 68 | [EG America](https://www.tamtam.ai/c/eg-america) (eg-america.com)<br>A rapidly growing convenience store retailer in the US, part of a global company, offering top-notch products and services nationwide | Retail | 🇺🇸 Westborough | 9,343 | 2019 |
| 69 | [ITT Inc.](https://www.tamtam.ai/c/itt-inc) (itt.com)<br>A global technology company providing cutting-edge solutions in motion technologies, industrial process, and connect and control technologies across various industries worldwide | Industrial Machinery Manufacturing | 🇺🇸 Stamford | 9,330 |  |
| 70 | [Kinder Morgan, Inc.](https://www.tamtam.ai/c/kinder-morgan-inc) (kindermorgan.com)<br>Transports and stores natural gas, refined petroleum products, crude oil, CO2, and renewable fuels through extensive pipelines and terminals across North America. | Oil and Gas | 🇺🇸 Houston | 9,312 | 1997 |
| 71 | [City of Austin](https://www.tamtam.ai/c/city-of-austin) (austintexas.gov)<br>Local government managing city employees, providing public services, promoting transparency, innovation, and maintaining high quality of life standards. | Government Administration | 🇺🇸 Austin | 8,954 | 1839 |
| 72 | [Expro](https://www.tamtam.ai/c/expro) (expro.com)<br>This company provides innovative technologies and high-quality data to support decision-making in energy operations, focusing on well construction and production | Oil and Gas | 🇺🇸 Houston | 8,906 | 1973 |
| 73 | [Toshiba](https://www.tamtam.ai/c/toshiba) (toshiba.com)<br>A global technology company focusing on energy, infrastructure, electronics, and digital solutions to create a sustainable future for generations to come | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Irvine | 8,787 | 1965 |
| 74 | [Tennessee Valley Authority](https://www.tamtam.ai/c/tennessee-valley-authority) (tva.com)<br>A self-financing government-owned power provider focusing on delivering affordable electricity, environmental stewardship, and economic development in the Tennessee Valley region | Utilities | 🇺🇸 Knoxville | 8,616 | 1933 |
| 75 | [PSEG](https://www.tamtam.ai/c/pseg) (landing.pseg.com)<br>Delivering electricity and gas services to millions of customers in New Jersey and Long Island, while prioritizing sustainability, community investment, and workforce development | Utilities | 🇺🇸 Newark | 8,371 | 1903 |
| 76 | [Eversource Energy](https://www.tamtam.ai/c/eversource-energy) (eversource.com)<br>A Fortune 500 energy company in New England, prioritizing safety, reliability, environmental leadership, and energy options for millions of customers | Utilities | 🇺🇸 Hartford | 8,353 |  |
| 77 | [TC Energy](https://www.tamtam.ai/c/tc-energy) (tcenergy.com)<br>The company is focused on assisting the world in transitioning to cleaner energy while meeting global demand through innovative solutions | Oil and Gas | 🇨🇦 Calgary | 8,243 | 1951 |
| 78 | [Zachry Group](https://www.tamtam.ai/c/zachry-group) (zachrygroup.com)<br>Turnkey engineering, construction, maintenance, turnaround, and fabrication services for energy, chemicals, power, manufacturing, and industrial sectors with high safety standards. | Construction | 🇺🇸 San Antonio | 8,087 |  |
| 79 | [Loews Corporation](https://www.tamtam.ai/c/loews-corporation) (loews.com)<br>Diversified company managing subsidiaries in insurance, pipelines, hotels, and packaging, providing strategic direction and corporate services to all. | Investment Management | 🇺🇸 New York | 8,020 |  |
| 80 | [Florida Power & Light](https://www.tamtam.ai/c/florida-power-and-light) (fpl.com)<br>Leading electric utility in America, providing affordable, reliable, and clean electricity to over 12 million people in Florida Recognized for exceptional reliability | Utilities | 🇺🇸 Juno Beach | 7,783 | 1925 |
| 81 | [Solar Turbines](https://www.tamtam.ai/c/solar-turbines) (solarturbines.com)<br>Manufacturer of industrial gas turbines, compressors, and generator sets used in oil, gas, and power generation projects globally. | Oil and Gas | 🇺🇸 San Diego | 7,656 | 1927 |
| 82 | [Hubbell Incorporated](https://www.tamtam.ai/c/hubbell-incorporated) (hubbell.com)<br>Manufacturer of utility and electrical solutions focused on grid modernization, clean energy, electrification, and energy efficiency worldwide. | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Shelton | 7,655 | 1888 |
| 83 | [Nabors Industries](https://www.tamtam.ai/c/nabors-industries) (nabors.com)<br>Provider of advanced drilling rigs, automation, and engineering solutions for safe, efficient, and responsible energy production worldwide. | Oil and Gas | 🇺🇸 Houston | 7,492 | 1952 |
| 84 | [Schweitzer Engineering Laboratories (SEL)](https://www.tamtam.ai/c/schweitzer-engineering-laboratories-sel) (selinc.com)<br>The company provides products and services for power system protection, monitoring, control, automation, communications, and metering with a focus on safety, reliability, and cost-effectiveness | Utilities | 🇺🇸 Pullman | 7,267 | 1982 |
| 85 | [OneSubsea](https://www.tamtam.ai/c/onesubsea) (onesubsea.slb.com)<br>A leading subsea technology provider focused on innovation to improve asset performance, increase energy efficiency, reduce emissions, and accelerate the energy transition | Oil and Gas | 🇺🇸 Houston | 7,149 | 2023 |
| 86 | [PPL Corporation](https://www.tamtam.ai/c/ppl-corporation) (pplweb.com)<br>Providing electricity to millions, building smarter, resilient power grids, advancing sustainable energy solutions, and fostering inclusive work environments. | Utilities | 🇺🇸 Allentown | 7,118 | 1920 |
| 87 | [Avangrid](https://www.tamtam.ai/c/avangrid) (avangrid.com)<br>A leading sustainable energy company with a focus on transitioning America to a clean future through its Networks and Renewables businesses | Utilities | 🇺🇸 Orange | 7,096 |  |
| 88 | [Ameren](https://www.tamtam.ai/c/ameren) (ameren.com)<br>A Fortune 500 company based in St Louis, providing electric and natural gas services to millions of customers in Illinois and Missouri | Utilities | 🇺🇸 St. Louis | 7,092 | 1902 |
| 89 | [CenterPoint Energy](https://www.tamtam.ai/c/centerpoint-energy) (centerpointenergy.com)<br>An investor-owned energy delivery company with operations in electric transmission, power generation, and natural gas distribution serving over 7 million customers | Utilities | 🇺🇸 Houston | 7,080 | 1866 |
| 90 | [ATCO](https://www.tamtam.ai/c/atco) (atco.com)<br>Global diversified corporation with over 7,100 employees and $24 billion assets, providing essential services across multiple industries worldwide. | Utilities | 🇨🇦 Canada | 7,064 | 1947 |
| 91 | [BC Hydro](https://www.tamtam.ai/c/bc-hydro) (bchydro.com)<br>Generate and deliver electricity to 95% of British Columbia's population, serving over four million people with reliable power. | Utilities | 🇨🇦 Vancouver | 6,996 |  |
| 92 | [Williams](https://www.tamtam.ai/c/williams) (williams.com)<br>Provides transport, storage, and delivery solutions for clean energy, operating critical infrastructure to support a low-carbon energy future. | Oil and Gas | 🇺🇸 Tulsa | 6,995 | 1908 |
| 93 | [Emerson Network Power](https://www.tamtam.ai/c/emerson-network-power) (vertiv.com)<br>Global leader in critical infrastructure technologies & services for ICT systems Offers hardware & software solutions for power, thermal, & infrastructure management to create efficient networks | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Columbus | 6,993 |  |
| 94 | [Enterprise Products](https://www.tamtam.ai/c/enterprise-products) (enterpriseproducts.com)<br>Provider of midstream energy services in North America, offering growth opportunities, competitive compensation, and comprehensive employee benefits. | Oil and Gas | 🇺🇸 Houston | 6,939 | 1968 |
| 95 | [Consumers Energy](https://www.tamtam.ai/c/consumers-energy) (careers.consumersenergy.com)<br>Consumers Energy is Michigan's energy provider offering careers in a dynamic industry focused on safe, efficient, and sustainable energy generation | Utilities | 🇺🇸 Jackson | 6,839 | 1886 |
| 96 | [First Solar](https://www.tamtam.ai/c/first-solar) (firstsolar.com)<br>Leading American company specializing in advanced thin film photovoltaic technology, manufacturing high-performance solar modules for reliable power generation. | Energy Technology | 🇺🇸 Tempe | 6,686 | 1999 |
| 97 | [NiSource](https://www.tamtam.ai/c/nisource) (nisource.com)<br>A utility company serving 4 million customers across 6 states with safe, reliable, and affordable gas and electric services, investing in infrastructure for the future | Utilities | 🇺🇸 Merrillville | 6,597 |  |
| 98 | [Noble Corporation](https://www.tamtam.ai/c/noble-corporation) (noblecorp.com)<br>Leading offshore drilling contractor operating advanced fleet focused on ultra-deepwater and high-specification jackup drilling worldwide. | Oil and Gas | 🇺🇸 Houston | 6,572 | 1921 |
| 99 | [Xignux](https://www.tamtam.ai/c/xignux) (xignux.com)<br>A leading company in energy and food industries, employing over 30,000 people in Mexico, the United States, and Brazil for a better world | Executive Offices | 🇲🇽 San Pedro Garza García | 6,553 |  |
| 100 | [Praxair, Inc - a Linde Company](https://www.tamtam.ai/c/praxair-inc-a-linde-company) (lindeus.com)<br>A global leader in industrial gases and engineering, providing high-quality gases, technologies, and services to diverse markets while promoting sustainability and productivity | Chemical Manufacturing | 🇺🇸 Danbury | 6,549 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 15, 2026.

## More company lists in North America

- [The largest companies in North America](https://www.tamtam.ai/l/largest-companies-in-north-america) (119,530)
- [Multinational companies in North America](https://www.tamtam.ai/l/multinational-companies-in-north-america) (18,655)
- [Manufacturers in North America](https://www.tamtam.ai/l/manufacturers-in-north-america) (10,135)
- [Education providers in North America](https://www.tamtam.ai/l/education-companies-in-north-america) (8,464)
- [Retail chains in North America](https://www.tamtam.ai/l/retail-chains-in-north-america) (8,234)
- [Financial services firms in North America](https://www.tamtam.ai/l/financial-services-firms-in-north-america) (7,768)
- [Companies with in-house R&D in North America](https://www.tamtam.ai/l/r-and-d-companies-in-north-america) (7,617)
- [Critical infrastructure operators in North America](https://www.tamtam.ai/l/critical-infrastructure-operators-in-north-america) (6,768)
- [Hardware manufacturers in North America](https://www.tamtam.ai/l/hardware-companies-in-north-america) (5,983)
- [Financial Services companies in North America](https://www.tamtam.ai/l/financial-services-companies-in-north-america) (5,619)
- [Public sector organisations in North America](https://www.tamtam.ai/l/public-sector-organisations-in-north-america) (5,044)
- [Higher Education companies in North America](https://www.tamtam.ai/l/higher-education-companies-in-north-america) (3,953)
- [Construction companies in North America](https://www.tamtam.ai/l/construction-companies-in-north-america) (3,792)
- [Publicly traded companies in North America](https://www.tamtam.ai/l/publicly-traded-companies-in-north-america) (3,538)
- [Family-owned companies in North America](https://www.tamtam.ai/l/family-owned-companies-in-north-america) (3,387)
- [Corporate groups and holding companies in North America](https://www.tamtam.ai/l/holding-companies-in-north-america) (3,311)
- [Distributors and wholesalers in North America](https://www.tamtam.ai/l/distributors-and-wholesalers-in-north-america) (3,207)
- [Hotel and hospitality groups in North America](https://www.tamtam.ai/l/hospitality-groups-in-north-america) (3,149)
- [E-commerce companies in North America](https://www.tamtam.ai/l/ecommerce-companies-in-north-america) (2,945)
- [Logistics companies in North America](https://www.tamtam.ai/l/logistics-companies-in-north-america) (2,701)
- [Insurance companies in North America](https://www.tamtam.ai/l/insurance-companies-in-north-america) (2,622)
- [Government Administration companies in North America](https://www.tamtam.ai/l/government-administration-companies-in-north-america) (2,497)
- [Retail companies in North America](https://www.tamtam.ai/l/retail-companies-in-north-america) (2,408)
- [Contract manufacturers in North America](https://www.tamtam.ai/l/contract-manufacturers-in-north-america) (2,377)

## The same list elsewhere

- [Energy companies in the world](https://www.tamtam.ai/l/energy-companies-in-the-world) (10,501)
- [Energy companies in the United States](https://www.tamtam.ai/l/energy-companies-united-states) (2,979)
- [Energy companies in Canada](https://www.tamtam.ai/l/energy-companies-canada) (497)
- [Energy companies in Mexico](https://www.tamtam.ai/l/energy-companies-mexico) (66)

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Source: https://www.tamtam.ai/l/energy-companies-in-north-america