# List of energy companies in the world

Tamtam tracks 10,502 energy companies worldwide. This list ranks the 100 largest by number of employees on LinkedIn, led by Tata Group, SUMITOMO ELECTRIC INTERCON'T PROD (M) SB and Siemens. Their median headcount is 42,000. Half of them were founded in 1945 or later. The most common headquarters are Mumbai (9), Houston (7) and London (3).

This selection of large global companies in the energy sector shows a mix of industries, from traditional oil and gas to advanced manufacturing and sustainable energy solutions. Companies like Shell, Reliance Industries Limited, and aramco are prominent in hydrocarbon exploration and production. Alongside these, Siemens and ABB focus on automation and industrial transformation, while Tesla Austria GmbH accelerates the transition to sustainable energy with electric vehicles.

A notable pattern is the significant presence of diversified conglomerates. Tata Group and Mahindra Group, both headquartered in Mumbai, operate across numerous sectors, including executive offices, manufacturing, and financial services. Similarly, SUMITOMO ELECTRIC INTERCON'T PROD (M) SB, based in Osaka, has diversified from copper wire into automotive, infocommunications, and environmental solutions.

🌍 World · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Tata Group](https://www.tamtam.ai/c/tata-group) (tata.com)<br>Global enterprise operating in over 100 countries, focused on improving community quality of life through ethical business and philanthropy. | Executive Offices | 🇮🇳 Mumbai | 1,017,626 | 1868 |
| 2 | [SUMITOMO ELECTRIC INTERCON'T PROD (M) SB](https://www.tamtam.ai/c/sumitomo-electric) (sumitomoelectric.com)<br>A global network of 414 companies in 40 countries, originally focused on copper wire production, now diversified into automotive, infocommunications, electronics, environment, energy, and industrial materials | Manufacturing | 🇯🇵 Osaka | 289,000 | 1897 |
| 3 | [Siemens](https://www.tamtam.ai/c/siemens) (siemens.com)<br>A technology company focused on industry, infrastructure, transport, and healthcare, creating innovative solutions to transform industries and markets globally | Automation Machinery Manufacturing | 🇩🇪 Munich | 273,649 | 1847 |
| 4 | [Mahindra Group](https://www.tamtam.ai/c/mahindra-group) (mahindra.com)<br>Leading multinational federation with businesses in farm equipment, vehicles, IT, finance, renewable energy, agriculture, logistics, hospitality, and real estate. | Executive Offices | 🇮🇳 Mumbai | 237,131 | 1945 |
| 5 | [Shell](https://www.tamtam.ai/c/shell) (shell.com)<br>A global energy company with a focus on cleaner energy solutions, serving millions of customers through retail service stations worldwide | Oil and Gas | 🇬🇧 London | 208,511 |  |
| 6 | [Reliance Industries Limited](https://www.tamtam.ai/c/reliance-industries-limited) (ril.com)<br>Company's activities span hydrocarbon exploration and production, petroleum refining, petrochemicals, retail, and telecommunications. Committed to innovation-led, exponential growth. | Oil and Gas | 🇮🇳 Navi Mumbai | 200,730 |  |
| 7 | [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 |
| 8 | [aramco](https://www.tamtam.ai/c/aramco) (aramco.com)<br>A leading producer of energy and chemicals, providing uninterrupted supply around the globe and working towards a low carbon economy | Oil and Gas | 🇸🇦 Dhahran | 170,467 |  |
| 9 | [Bosch](https://www.tamtam.ai/c/bosch) (bosch.com)<br>Leading global supplier of technology and services, shaping trends like automation, electrification, digitalization, and sustainability across diverse business sectors worldwide. | Software Development | 🇩🇪 Gerlingen-Schillerhöhe | 158,647 |  |
| 10 | [ABB](https://www.tamtam.ai/c/abb-zurich) (abb.com)<br>Connects engineering and software to optimize how things are manufactured, moved, powered, and operated for a sustainable, resource-efficient future, driving industrial transformation. | Automation Machinery Manufacturing | 🇨🇭 Zurich | 146,155 |  |
| 11 | [MITSUBISHI ELECTRIC](https://www.tamtam.ai/c/mitsubishi-electric) (mitsubishielectric.com)<br>A leader in electric and electronic equipment manufacturing, focusing on Energy Systems, Industrial Automation, Information Systems, Electronic Devices, and Home Appliances | Appliances, Electrical, and Electronics Manufacturing | 🇪🇸 Chiyoda-ku | 146,000 | 1921 |
| 12 | [Larsen & Toubro](https://www.tamtam.ai/c/larsen-and-toubro) (larsentoubro.com)<br>Multinational company specializing in engineering, procurement, construction projects, hi-tech manufacturing, and sustainability-focused services across over 50 countries worldwide. | Executive Offices | 🇮🇳 Mumbai | 142,350 |  |
| 13 | [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 |
| 14 | [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 |
| 15 | [Greencap](https://www.tamtam.ai/c/wesfarmers) (wesfarmers.com.au)<br>A diversified corporation in Australia, providing goods and services in home improvement, apparel, office supplies, and industrials sectors while focusing on shareholder returns and corporate responsibility | Retail | 🇦🇺 Perth | 107,000 | 1914 |
| 16 | [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 |  |
| 17 | [EDF](https://www.tamtam.ai/c/edf-paris) (edf.fr)<br>builds a net-zero energy future with electricity, innovative solutions, and services, to help save the planet and drive wellbeing and economic development. | Electric Power Generation | 🇫🇷 Paris | 93,235 |  |
| 18 | [Schneider Electric](https://www.tamtam.ai/c/schneider-electric) (se.com)<br>Global energy technology leader, providing efficiency and sustainability through electrifying, automating, and digitalizing industries, businesses, and homes with intelligent devices and digital services. | Automation Machinery Manufacturing | 🇫🇷 Rueil-Malmaison | 87,938 | 1836 |
| 19 | [TotalEnergies](https://www.tamtam.ai/c/totalenergies) (totalenergies.com)<br>Global energy company with 105,000 employees focused on energy transition, safety, ethics, innovation, and career development worldwide. | Oil and Gas | 🇫🇷 Paris La Défense Cedex | 86,609 |  |
| 20 | [bp](https://www.tamtam.ai/c/bp) (bp.com)<br>Investing in a balanced energy system by transitioning from oil and gas to lower-carbon energy, convenience stores, and power trading | Oil and Gas | 🇬🇧 London | 85,000 | 1909 |
| 21 | [Aditya Birla Group](https://www.tamtam.ai/c/aditya-birla-group) (adityabirla.com)<br>An innovative global conglomerate offering a wide range of products and services, focused on responsible business practices and stakeholder value creation | Executive Offices | 🇮🇳 Mumbai | 82,509 |  |
| 22 | [PT Pertamina (Persero)](https://www.tamtam.ai/c/pt-pertamina-persero) (pertamina.com)<br>Engaged in integrated energy sectors, including upstream, midstream, downstream, and renewable energy, with over 50 years of experience. | Oil and Gas | 🇮🇩 Jakarta | 80,882 | 1957 |
| 23 | [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 |  |
| 24 | [DRÄXLMAIER Group](https://www.tamtam.ai/c/draxlmaier-group) (draexlmaier.com)<br>Development and manufacturing of wiring harnesses, electrical components, interiors, and battery systems for premium automotive manufacturers worldwide. | Motor Vehicle Manufacturing | 🇩🇪 Vilsbiburg | 75,000 | 1958 |
| 25 | [ExxonMobil](https://www.tamtam.ai/c/exxonmobil) (corporate.exxonmobil.com)<br>Scientists and engineers pioneering research, pursuing new technologies to reduce emissions, creating efficient fuels, meeting global energy needs, aiming net-zero emissions by 2050. | Oil and Gas | 🇨🇿 | 73,163 |  |
| 26 | [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 |  |
| 27 | [Koç Holding](https://www.tamtam.ai/c/koc-holding) (koc.com.tr)<br>Leading Turkish investment holding group with strong presence in energy, automotive, consumer durables, and finance sectors, ranked in Fortune Global 500 | Holding Companies | 🇹🇷 Uskudar | 69,971 |  |
| 28 | [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 |  |
| 29 | [Linde](https://www.tamtam.ai/c/linde) (linde.com)<br>Global industrial gases and engineering company providing high-quality solutions and services for various industries, supporting sustainability, decarbonization, and planet protection | Chemical Manufacturing | 🇬🇧 Woking | 66,000 | 1879 |
| 30 | [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 |
| 31 | [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 |
| 32 | [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 |  |
| 33 | [Siemens Energy](https://www.tamtam.ai/c/siemens-energy) (siemens-energy.com)<br>A global energy technology company offering products and solutions for a sustainable future, covering the energy value chain with conventional and renewable technology | Renewable Energy Power Generation | 🇩🇪 | 56,539 | 2020 |
| 34 | [Petrobras](https://www.tamtam.ai/c/petrobras) (petrobras.com.br)<br>The company aims to provide ethical, safe, and competitive energy solutions while focusing on sustainability, environmental responsibility, and employee well-being | Oil and Gas | 🇧🇷 Rio de Janeiro | 56,267 |  |
| 35 | [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 |  |
| 36 | [Eaton](https://www.tamtam.ai/c/eaton) (eaton.com)<br>Intelligent power management provider working towards a sustainable future by helping customers manage power, transition to renewable energy, and solve power management challenges globally | Appliances, Electrical, and Electronics Manufacturing | 🇮🇪 Dublin | 51,011 |  |
| 37 | [ADNOC Group](https://www.tamtam.ai/c/adnoc-group) (adnoc.ae)<br>World's leading energy producer, operating across the hydrocarbon value chain, from exploration to refining and petrochemicals, catalyzing Abu Dhabi's growth. | Oil and Gas | 🇦🇪 Abu Dhabi | 50,898 | 1971 |
| 38 | [Veolia](https://www.tamtam.ai/c/veolia-aubervilliers) (veolia.com)<br>Works to build environmental security, cleans up pollution, reduces carbon emissions, and regenerates resources through water, waste, and energy solutions. | Environmental Services | 🇫🇷 Aubervilliers | 50,280 | 1853 |
| 39 | [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 |  |
| 40 | [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 |
| 41 | [Techint Group](https://www.tamtam.ai/c/techint-group) (techintgroup.com)<br>Industrial expertise across steelmaking, infrastructure, industrial plant design and construction, metals and mining technologies, oil and gas, and health. | Industrial Machinery Manufacturing | 🇦🇷 | 47,652 | 1945 |
| 42 | [Sonatrach](https://www.tamtam.ai/c/sonatrach) (sonatrach.com)<br>This Algerian government-owned company exploits hydrocarbon resources, covering all aspects of the oil and gas industry chain: upstream, midstream, and downstream operations. | Oil and Gas | 🇩🇿 Hydra | 47,510 | 1963 |
| 43 | [ENGIE](https://www.tamtam.ai/c/engie) (engie.com)<br>Global energy value chain operator, from renewable electricity production and green gas to infrastructure management and energy supply for diverse customers. | Renewable Energy Power Generation | 🇫🇷 La Garenne-Colombes | 45,706 |  |
| 44 | [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 |
| 45 | [Schaeffler](https://www.tamtam.ai/c/schaeffler) (schaeffler.com)<br>A global leader in motion technology, the company provides innovative solutions for electric mobility, CO₂-efficient drives, Industry 40, and renewable energies | Manufacturing | 🇩🇪 Herzogenaurach | 45,108 | 1946 |
| 46 | [Iberdrola](https://www.tamtam.ai/c/iberdrola) (iberdrola.com)<br>A global leader in renewable energy and electricity, focusing on sustainable and efficient services for millions worldwide with investments in clean energy and digital transformation | Electric Power Generation | 🇪🇸 Bilbao | 45,000 | 1901 |
| 47 | [Poste Italiane](https://www.tamtam.ai/c/poste-italiane) (poste.it)<br>Largest Italian postal and parcel delivery network, financial services through BancoPosta, and leading life insurance and asset management provider. | Transportation, Logistics, Supply Chain and Storage | 🇮🇹 Rome | 42,974 |  |
| 48 | [Eskom Holdings SOC Ltd](https://www.tamtam.ai/c/eskom-holdings-soc-ltd) (eskom.co.za)<br>A leading power utility in South Africa, with a significant presence in electricity generation, transportation, and distribution on the African continent | Utilities | 🇿🇦 Johannesburg | 42,862 | 1923 |
| 49 | [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 |
| 50 | [Doosan](https://www.tamtam.ai/c/doosan) (doosan.com)<br>A global company specializing in building power plants, industrial facilities, machine tools, engines, bridges, construction equipment, and consumer products | Industrial Machinery Manufacturing | 🇰🇷 Seoul | 42,000 | 1896 |
| 51 | [JSW](https://www.tamtam.ai/c/jsw) (jsw.in)<br>A diverse $23 billion conglomerate with global operations in steel, energy, minerals, infrastructure, and cement, known for operational excellence and social responsibility initiatives | Manufacturing | 🇮🇳 Mumbai | 41,996 |  |
| 52 | [Indian Oil Corp Limited](https://www.tamtam.ai/c/indian-oil-corp-limited) (iocl.com)<br>Leading energy company specializing in oil refining, distribution, and marketing, ranked among the world's largest corporations globally. | Oil and Gas | 🇮🇳 New Delhi | 41,695 | 1959 |
| 53 | [RPG Group](https://www.tamtam.ai/c/rpg-group) (rpggroup.com)<br>A diversified business group with a turnover of over US$ 44 billion, operating in infrastructure, automotive, IT, pharmaceuticals, energy, and plantations | Manufacturing | 🇮🇳 Mumbai | 40,984 | 1979 |
| 54 | [Hitachi](https://www.tamtam.ai/c/hitachi) (hitachi.com)<br>A technology and innovation company committed to creating a more sustainable society through advanced social infrastructure systems and improving quality of life | IT Services and IT Consulting | 🇯🇵 Tokyo | 40,513 | 1910 |
| 55 | [PETRONAS](https://www.tamtam.ai/c/petronas) (petronas.com)<br>Leading global energy company, committed to powering society’s progress responsibly. Explores, develops, produces hydrocarbons and cleaner energy solutions, focusing on sustainability and net zero. | Oil and Gas | 🇲🇾 Kuala Lumpur | 40,244 | 1974 |
| 56 | [Air Liquide](https://www.tamtam.ai/c/air-liquide) (airliquide.com)<br>A global leader in gases, technologies, and services for industry and health, focusing on innovation and sustainability for a better future | Chemical Manufacturing | 🇫🇷 Paris | 40,100 |  |
| 57 | [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 |  |
| 58 | [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 |  |
| 59 | [Hitachi Energy](https://www.tamtam.ai/c/hitachi-energy) (hitachienergy.com)<br>Global leader in electrification providing advanced power grid technologies and digital solutions to support sustainable energy and decarbonization efforts. | Utilities | 🇨🇭 Zurich | 36,864 |  |
| 60 | [RP Sanjiv Goenka Group](https://www.tamtam.ai/c/rp-sanjiv-goenka-group) (rpsg.in)<br>A rapidly expanding conglomerate with diverse holdings in power, energy, manufacturing, retail, IT services, FMCG, media, entertainment, and agriculture sectors | Consumer Services | 🇮🇳 Kolkata | 36,571 | 1820 |
| 61 | [Anadolu Group](https://www.tamtam.ai/c/anadolu-group) (anadolugroup.com)<br>A multinational group operating in 7 sectors, with partnerships with leading global brands, linking Anatolia to the world | Holding Companies | 🇹🇷 Istanbul | 36,225 |  |
| 62 | [ACCIONA](https://www.tamtam.ai/c/acciona) (acciona.com)<br>The company specializes in developing regenerative infrastructure with a focus on sustainability, leading the transition to a low-carbon economy with a positive impact on people and the planet | Utilities | 🇪🇸 Madrid | 33,828 |  |
| 63 | [Murugappa Group](https://www.tamtam.ai/c/murugappa-group) (murugappa.com)<br>Conglomerate with businesses in agriculture, engineering, financial services, manufacturing abrasives, ceramics, electric vehicles, auto components, fertilizers, sugar, tea, and more. | Machinery Manufacturing | 🇮🇳 Chennai | 33,648 | 1900 |
| 64 | [thyssenkrupp](https://www.tamtam.ai/c/thyssenkrupp) (thyssenkrupp.com)<br>An international industrial and technology company focused on developing innovative and sustainable solutions for the future across various sectors | Industrial Machinery Manufacturing | 🇩🇪 Essen | 32,389 |  |
| 65 | [YPF](https://www.tamtam.ai/c/ypf) (ypf.com)<br>Largest oil and gas producer in Argentina, leading projects to become a world-class unconventional company and global energy exporter by 2031. | Oil and Gas | 🇦🇷 Buenos Aires | 32,363 | 1922 |
| 66 | [Eni](https://www.tamtam.ai/c/eni) (eni.com)<br>Integrated energy business, decarbonized products, renewable and retail, bio-refineries, biomethane, low-carbon energy, mobility services. | Oil and Gas | 🇮🇹 Rome | 32,259 |  |
| 67 | [WEG](https://www.tamtam.ai/c/weg) (weg.net)<br>A global electric-electronic equipment company offering solutions in electric machines, automation, and paints for various industries worldwide | Appliances, Electrical, and Electronics Manufacturing | 🇧🇷 Jaraguá do Sul | 32,000 | 1961 |
| 68 | [Saipem](https://www.tamtam.ai/c/saipem) (saipem.com)<br>Global leader in engineering and construction for energy and infrastructure projects worldwide, offering offshore and onshore services with a focus on sustainability and innovation | Engineering Services | 🇮🇹 Milan | 32,000 | 1957 |
| 69 | [Vestas](https://www.tamtam.ai/c/vestas) (vestas.com)<br>Global leader in sustainable energy solutions, designing, manufacturing, installing, and servicing wind turbines worldwide, using data to optimize wind power solutions | Renewable Energy Equipment Manufacturing | 🇩🇰 Aarhus | 31,864 |  |
| 70 | [Rolls-Royce](https://www.tamtam.ai/c/rolls-royce) (rolls-royce.com)<br>Engineering excellence driving critical technologies for air, sea, and land, powering, protecting, and connecting people worldwide. | Industrial Machinery Manufacturing | 🇬🇧 London | 31,649 |  |
| 71 | [ZTE Corporation](https://www.tamtam.ai/c/zte-corporation) (zte.com.cn)<br>A global leader in telecommunications and IT, committed to providing innovative technologies and solutions for operators, governments, enterprises, and consumers worldwide | Telecommunications | 🇨🇳 Shenzhen | 31,255 | 1985 |
| 72 | [Enel Group](https://www.tamtam.ai/c/enel-group) (enel.com)<br>Multinational company reshaping the future of energy, a leading integrated electricity operator. Distributes and supplies electricity to millions of end users. | Utilities | 🇮🇹 Rome | 31,218 | 1962 |
| 73 | [S.A.S.](https://www.tamtam.ai/c/sasol) (sasol.com)<br>Produces liquid fuels, chemicals, and electricity from coal. Transforms coal into valuable energy products for various industries. | Chemical Manufacturing | 🇿🇦 Sandton | 31,000 | 1950 |
| 74 | [Panasonic](https://www.tamtam.ai/c/panasonic) (holdings.panasonic)<br>A company committed to enhancing well-being and society through sustainable solutions, offering superior products and services to help people live their best | Appliances, Electrical, and Electronics Manufacturing | 🇯🇵 Kadoma-shi | 30,689 | 1918 |
| 75 | [E.ON](https://www.tamtam.ai/c/e-on-essen) (eon.com)<br>Leading energy group in Europe, operating energy networks, providing innovative customer solutions, and driving the energy transition with a commitment to sustainability and climate protection | Utilities | 🇩🇪 Essen | 30,521 | 2000 |
| 76 | [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 |  |
| 77 | [Indian Oil Corporation Limited](https://www.tamtam.ai/c/indian-oil-corporation-limited)<br>A national oil company in India involved in the entire hydrocarbon value chain, including refining, transportation, marketing, exploration, production, and petrochemicals | Oil and Gas | 🇮🇳 Mumbai | 29,849 |  |
| 78 | [Weatherford](https://www.tamtam.ai/c/weatherford) (weatherford.com)<br>A global energy services company with 17,000 team members in 75 countries, providing solutions for the challenges of the energy industry | Oil and Gas | 🇮🇪 Dublin | 29,301 | 1987 |
| 79 | [Raízen](https://www.tamtam.ai/c/raizen) (raizen.com.br)<br>A global leader in bioenergy, driving the energy transition with an integrated model from production to distribution, focusing on sustainability and innovation | Retail Gasoline | 🇧🇷 São Paulo | 28,835 | 2011 |
| 80 | [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 |  |
| 81 | [Prysmian](https://www.tamtam.ai/c/prysmian) (prysmian.com)<br>A global leader in high-tech cables & systems for energy and telecom, driving the energy transition and digitalization worldwide | Manufacturing | 🇮🇹 Milan | 28,000 | 1872 |
| 82 | [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 |  |
| 83 | [EnBW Energie Baden-Württemberg AG](https://www.tamtam.ai/c/enbw-energie-baden-wurttemberg-ag) (enbw.com)<br>A leading energy supply company in Germany and Europe with a workforce of 20,000, providing electricity, gas, water, and energy-related products and services to 55 million customers | Utilities | 🇩🇪 Karlsruhe | 27,000 |  |
| 84 | [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 |
| 85 | [NTPC Limited](https://www.tamtam.ai/c/ntpc-limited) (ntpc.co.in)<br>India's largest power generation utility, operating across fossil fuels, hydro, nuclear, and renewable energy sources, with a diversified portfolio including consultancy and training services | Real Estate | 🇮🇳 New Delhi | 26,494 | 1975 |
| 86 | [repsol](https://www.tamtam.ai/c/repsol) (repsol.com)<br>A leading player in the oil and gas industry, involved in exploration, production, transformation, development, and marketing of efficient, sustainable energy solutions globally | Oil and Gas | 🇪🇸 Madrid | 26,030 |  |
| 87 | [TechnipFMC](https://www.tamtam.ai/c/technipfmc) (technipfmc.com)<br>A leading technology provider in the energy industry, offering integrated projects and services to develop energy resources while prioritizing sustainability | Oil and Gas | 🇬🇧 Newcastle upon Tyne | 25,875 |  |
| 88 | [VINCI Energies](https://www.tamtam.ai/c/vinci-energies) (vinci-energies.com)<br>Contributes to environmental transition by implementing customized multi-technical solutions from design to maintenance, enhancing infrastructure reliability, efficiency, and sustainability for energy and digital sectors. | IT Services and IT Consulting | 🇫🇷 Nanterre | 25,848 |  |
| 89 | [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 |  |
| 90 | [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 |  |
| 91 | [Enedis](https://www.tamtam.ai/c/enedis) (enedis.fr)<br>They manage the public electricity distribution network across most of France, with nearly 39,000 employees maintaining and expanding the 13 million km network | Utilities | 🇫🇷 Puteaux | 24,479 |  |
| 92 | [JSW Steel](https://www.tamtam.ai/c/jsw-steel) (jsw.in)<br>Leading Indian steel manufacturer with a focus on sustainability, technology, innovation, and R&D to produce value-added high-end steels for global markets | Mining | 🇮🇳 Mumbai | 24,342 |  |
| 93 | [Saudi Energy](https://www.tamtam.ai/c/saudi-energy) (se.com.sa)<br>Generation, transmission, and distribution of electricity across Saudi Arabia, serving national energy needs and supporting regional development. | Utilities | 🇸🇦 Riyadh | 23,962 | 2000 |
| 94 | [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 |  |
| 95 | [Danfoss](https://www.tamtam.ai/c/danfoss) (danfoss.com)<br>Engineering innovative solutions for machine productivity, emissions reduction, energy efficiency, and electrification in various industries worldwide since 1933 Serving customers in 100+ countries | Industrial Machinery Manufacturing | 🇩🇰 Nordborg | 23,458 |  |
| 96 | [BYD](https://www.tamtam.ai/c/byd) (bydglobal.com)<br>A leading Chinese high-tech enterprise specializing in IT, automobile, and new energy, with a strong focus on rechargeable batteries and electric vehicles | Motor Vehicle Manufacturing | 🇨🇳 Shenzhen | 23,317 | 1995 |
| 97 | [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 |  |
| 98 | [Bharat Petroleum Corporation Limited](https://www.tamtam.ai/c/bharat-petroleum-corporation-limited) (bharatpetroleum.in)<br>Refining crude oil, marketing petroleum products, with significant presence in upstream and downstream oil and gas sectors, targeting net-zero by 2040. | Oil and Gas | 🇮🇳 Mumbai | 23,037 | 1976 |
| 99 | [RGE](https://www.tamtam.ai/c/rge) (rgei.com)<br>It manages a diverse portfolio of companies in resource-based manufacturing, focusing on sustainability and improving lives through various products. | Paper and Forest Product Manufacturing | 🇸🇬 Singapore | 23,023 | 1973 |
| 100 | [City of Cape Town](https://www.tamtam.ai/c/city-of-cape-town) (capetown.gov.za)<br>Municipality in Cape Town offering a diverse range of services to 4 million residents, with a focus on community, development, and growth | Government Administration | 🇿🇦 Cape Town | 22,864 |  |

## 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 12, 2026.

## More company lists in the world

- [The largest companies in the world](https://www.tamtam.ai/l/largest-companies-in-the-world) (415,122)
- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,925)
- [Manufacturers in the world](https://www.tamtam.ai/l/manufacturers-in-the-world) (39,579)
- [Retail chains in the world](https://www.tamtam.ai/l/retail-chains-in-the-world) (35,499)
- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,346)
- [Financial services firms in the world](https://www.tamtam.ai/l/financial-services-firms-in-the-world) (26,817)
- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Education providers in the world](https://www.tamtam.ai/l/education-companies-in-the-world) (23,937)
- [IT Services and IT Consulting companies in the world](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-the-world) (23,571)
- [Critical infrastructure operators in the world](https://www.tamtam.ai/l/critical-infrastructure-operators-in-the-world) (23,312)
- [SaaS companies in the world](https://www.tamtam.ai/l/saas-companies-in-the-world) (22,459)
- [IT services companies in the world](https://www.tamtam.ai/l/it-services-companies-in-the-world) (20,934)
- [Software Development companies in the world](https://www.tamtam.ai/l/software-development-companies-in-the-world) (20,534)
- [Hardware manufacturers in the world](https://www.tamtam.ai/l/hardware-companies-in-the-world) (20,159)
- [Financial Services companies in the world](https://www.tamtam.ai/l/financial-services-companies-in-the-world) (19,958)
- [Companies with a mobile app in the world](https://www.tamtam.ai/l/companies-with-mobile-app-in-the-world) (18,922)
- [Public sector organisations in the world](https://www.tamtam.ai/l/public-sector-organisations-in-the-world) (18,493)
- [Healthcare providers in the world](https://www.tamtam.ai/l/healthcare-providers-in-the-world) (16,037)
- [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009)
- [Family-owned companies in the world](https://www.tamtam.ai/l/family-owned-companies-in-the-world) (14,667)
- [Distributors and wholesalers in the world](https://www.tamtam.ai/l/distributors-and-wholesalers-in-the-world) (13,470)
- [Hospitals and Health Care companies in the world](https://www.tamtam.ai/l/hospitals-and-health-care-companies-in-the-world) (12,916)
- [Corporate groups and holding companies in the world](https://www.tamtam.ai/l/holding-companies-in-the-world) (12,864)
- [E-commerce companies in the world](https://www.tamtam.ai/l/ecommerce-companies-in-the-world) (12,013)

## The same list elsewhere

- [Energy companies in Europe](https://www.tamtam.ai/l/energy-companies-in-europe) (4,235)
- [Energy companies in North America](https://www.tamtam.ai/l/energy-companies-in-north-america) (3,543)
- [Energy companies in the United States](https://www.tamtam.ai/l/energy-companies-united-states) (2,980)
- [Energy companies in France](https://www.tamtam.ai/l/energy-companies-france) (1,594)
- [Energy companies in Asia](https://www.tamtam.ai/l/energy-companies-in-asia) (1,312)
- [Energy companies in Latin America](https://www.tamtam.ai/l/energy-companies-in-latin-america) (744)
- [Energy companies in the United Kingdom](https://www.tamtam.ai/l/energy-companies-united-kingdom) (638)
- [Energy companies in India](https://www.tamtam.ai/l/energy-companies-india) (631)
- [Energy companies in Canada](https://www.tamtam.ai/l/energy-companies-canada) (497)
- [Energy companies in Brazil](https://www.tamtam.ai/l/energy-companies-brazil) (438)
- [Energy companies in Germany](https://www.tamtam.ai/l/energy-companies-germany) (431)
- [Energy companies in the Middle East](https://www.tamtam.ai/l/energy-companies-in-the-middle-east) (327)
- [Energy companies in Africa](https://www.tamtam.ai/l/energy-companies-in-africa) (257)
- [Energy companies in Italy](https://www.tamtam.ai/l/energy-companies-italy) (228)
- [Energy companies in Spain](https://www.tamtam.ai/l/energy-companies-spain) (225)
- [Energy companies in the Netherlands](https://www.tamtam.ai/l/energy-companies-netherlands) (199)
- [Energy companies in Turkey](https://www.tamtam.ai/l/energy-companies-turkey) (197)
- [Energy companies in China](https://www.tamtam.ai/l/energy-companies-china) (183)
- [Energy companies in Indonesia](https://www.tamtam.ai/l/energy-companies-indonesia) (164)
- [Energy companies in Switzerland](https://www.tamtam.ai/l/energy-companies-switzerland) (151)
- [Energy companies in Australia](https://www.tamtam.ai/l/energy-companies-australia) (126)
- [Energy companies in Belgium](https://www.tamtam.ai/l/energy-companies-belgium) (123)
- [Energy companies in Norway](https://www.tamtam.ai/l/energy-companies-norway) (107)
- [Energy companies in Argentina](https://www.tamtam.ai/l/energy-companies-argentina) (85)

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Source: https://www.tamtam.ai/l/energy-companies-in-the-world