# Energy companies headquartered in Chennai

Tamtam tracks 38 energy companies headquartered in Chennai. This list ranks the 30 largest by number of employees on LinkedIn, led by Murugappa Group, BGR Energy Systems and EID Parry India Ltd. Their median headcount is 658. Half of them were founded in 1998 or later.

These energy companies in Chennai primarily operate in oil and gas, utilities, and electrical and electronics manufacturing. The list includes a mix of large conglomerates and specialized firms. Noteworthy companies include Murugappa Group, a conglomerate with diverse interests including engineering and electric vehicles, and BGR Energy Systems, which provides utility industry solutions and EPC contracts for power plants. Fuji Electric India offers energy and automation solutions, while Siemens Gamesa Renewable Power manufactures wind energy generators.

A significant pattern among these companies is their focus on power generation and distribution, with a strong presence in both traditional oil and gas sectors and emerging renewable energy technologies. Most of the companies listed are headquartered in Chennai, indicating the city's role as a hub for the energy sector.

🇮🇳 Chennai · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [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 |
| 2 | [BGR Energy Systems](https://www.tamtam.ai/c/bgr-energy-systems) (bgrcorp.com)<br>Provides end-to-end utility industry solutions including product manufacturing and turnkey EPC contracts for complete power plant projects. | Oil and Gas | 🇮🇳 Chennai | 2,145 | 1985 |
| 3 | [EID Parry India Ltd](https://www.tamtam.ai/c/eid-parry-india-ltd) (eidparry.com)<br>A company in the sugar industry with interests in nutraceuticals Also involved in farm inputs business through a subsidiary | Food and Beverage Manufacturing | 🇮🇳 Chennai | 1,686 |  |
| 4 | [Voltech Group](https://www.tamtam.ai/c/voltech-group) (voltechgroup.com)<br>A professional Electrical Engineering firm with extensive experience in Testing and Commissioning of medium and heavy duty electrical systems in power and transmission sector | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 1,586 | 1995 |
| 5 | [Fuji Electric India](https://www.tamtam.ai/c/fuji-electric-india) (india.fujielectric.com)<br>Provider of a wide range of energy and automation solutions including UPS, drives, inverters, stabilizers, automation systems, and power semiconductors | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 1,555 | 2009 |
| 6 | [TANGEDCO](https://www.tamtam.ai/c/tangedco) (gov.in)<br>The company is a leading energy provider and distributor established in 1957, restructured in 2008 to include subsidiary companies for transmission, generation, and distribution | Government Administration | 🇮🇳 Chennai | 1,093 |  |
| 7 | [NUMERIC INDIA - A Group Brand Legrand](https://www.tamtam.ai/c/numeric-india-a-group-brand-legrand) (numericups.com)<br>Numeric provides top-notch power back-up solutions with a controlled environmental footprint since 1984, serving various industries with world-class manufacturing and support services | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 995 | 1984 |
| 8 | [Operational Energy Group India Ltd](https://www.tamtam.ai/c/operational-energy-group-india-ltd) (oegglobal.com)<br>A global technology company offering comprehensive solutions in Power, Process, and Water industries through engineering, project management, EPC, and operations & maintenance services | Oil and Gas | 🇮🇳 Chennai | 945 | 2002 |
| 9 | [Aban Offshore Limited](https://www.tamtam.ai/c/aban-offshore-limited) (abanoffshore.com)<br>Leading Indian offshore drilling contractor offering world-class services for oil exploration and production globally with innovative, cost-effective solutions and a highly qualified team | Oil and Gas | 🇮🇳 Chennai | 894 |  |
| 10 | [Bonfiglioli India](https://www.tamtam.ai/c/bonfiglioli-india) (bonfiglioli.in)<br>Global leader in power transmission industry, specializing in gearboxes, drive systems, solar inverters, and tailored solutions for industrial automation, mobile energy, and wind energy applications | Industrial Machinery Manufacturing | 🇮🇳 Chennai | 846 | 1998 |
| 11 | [Siemens Gamesa Renewable Power Private Limited](https://www.tamtam.ai/c/siemens-gamesa-renewable-power-private-limited) (indiamart.com)<br>Manufacturer of wind energy generators, services, and systems for renewable power generation | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 834 |  |
| 12 | [Chennai Petroleum Corp Limited (CPCL), formerly known as Madras Refineries Limited (MRL)](https://www.tamtam.ai/c/chennai-petroleum-corp-limited-cpcl-formerly-known-as-madras-refineries-limited) (cpcl.co.in)<br>An utilities organization based in Chennai, India, specializing in petroleum refining and related operations | Utilities | 🇮🇳 Chennai | 827 |  |
| 13 | [VESTAS WIND TECHNOLOGY INDIA PRIVATE LIMITED](https://www.tamtam.ai/c/vestas-wind-technology-india-private-limited)<br>A utility based in Tamil Nadu, India, specializing in wind technology solutions on Old Mahabalipuram Road in Chennai | Utilities | 🇮🇳 Chennai | 811 |  |
| 14 | [ABI-SHOWATECH (INDIA) PRIVATE LIMITED](https://www.tamtam.ai/c/abi-showatech-india-private-limited) (abishowatech.co.in)<br>Global leader in automotive component manufacturing, specializing in investment casting and machining of turbo charger and safety critical parts with industry accreditations and NADCAP approved special processes | Manufacturing | 🇮🇳 Chennai | 703 |  |
| 15 | [ReGen Powertech](https://www.tamtam.ai/c/regen-powertech) (regenpowertech.com)<br>A leading wind energy company in India, offering turnkey solutions for wind power projects, with a focus on clean, green, sustainable energy production | Renewable Energy Semiconductor Manufacturing | 🇮🇳 Chennai | 658 | 2008 |
| 16 | [TMTL Engines - Eicher Engines](https://www.tamtam.ai/c/tmtl-engines-eicher-engines) (tmtl.in)<br>A division of a leading conglomerate in India, TMTL Engines manufactures air and water cooled engines for automotive, stationary, and industrial applications with a focus on power generation | Machinery Manufacturing | 🇮🇳 Chennai | 652 |  |
| 17 | [Fenice Energy](https://www.tamtam.ai/c/fenice-energy) (feniceenergy.com)<br>Specializing in clean energy solutions for homes, Fenice Energy offers solar, backup power, and eV charging services with over 20 years of experience | Renewables & Environment | 🇮🇳 Chennai | 561 | 2002 |
| 18 | [Toshiba JSW Power Systems Pvt.Ltd.](https://www.tamtam.ai/c/toshiba-jsw-power-systems-pvt-ltd) (toshiba-tjps.in)<br>A joint venture offering high-quality maintenance services and advanced digital solutions for thermal power plants in India to drive efficiency and reduce environmental impact | Industrial Machinery Manufacturing | 🇮🇳 Chennai | 561 | 2008 |
| 19 | [ANDRITZ Technologies - India](https://www.tamtam.ai/c/andritz-technologies-india) (andritz.com)<br>Specializes in providing technologies for various industries including metals, pulp and paper, feed, biofuel, and separation, with operational presence in multiple Indian regions | Engineering Services | 🇮🇳 Chennai | 520 | 2008 |
| 20 | [Indira Gandhi Centre for Atomic Research (IGCAR)](https://www.tamtam.ai/c/indira-gandhi-centre-for-atomic-research-igcar) (igcar.ernet.in)<br>A research organization located in Kalpakkam, Chennai, India, focusing on atomic research and technological advancements in the field | Research Services | 🇮🇳 Chennai | 511 | 1971 |
| 21 | [Refex Group](https://www.tamtam.ai/c/refex-group) (refex.group)<br>A diversified group based in India with interests in chemicals, energy, pharma, medical tech, sustainable mobility, and airport operations, focused on enhancing ESG practices | Utilities | 🇮🇳 Chennai | 472 | 2002 |
| 22 | [Ganges Internationale Pvt. LTD.](https://www.tamtam.ai/c/ganges-internationale-pvt-ltd) (gangesintl.com)<br>A leading manufacturer of fabricated structures for various industries with a strong global presence and extensive experience in executing solar PV projects | Fabricated Metal Products | 🇮🇳 Chennai | 453 | 1991 |
| 23 | [CREW(P)Ltd.](https://www.tamtam.ai/c/crew-p-ltd) (crewpl.com)<br>Specializing in Bulk Material Handling systems for Thermal Power Plants & Ports, offering Engineering services, operation & maintenance in multiple states across India | Machinery Manufacturing | 🇮🇳 Chennai | 452 | 1984 |
| 24 | [NISSI Engineering Solution Pvt. Ltd.](https://www.tamtam.ai/c/nissi-engineering-solution-pvt-ltd) (nissi.co.in)<br>Specializing in electrical engineering, NISSI provides high-quality solutions for power transmission, distribution, and automation, focusing on innovation, reliability, and customer success | Electric Power Transmission, Control, and Distribution | 🇮🇳 Chennai | 448 | 2005 |
| 25 | [VOLTECH O AND M SERVICES PVT LTD](https://www.tamtam.ai/c/voltech-o-and-m-services-pvt-ltd) (voltechgroup.com)<br>Professional services in Operation and Maintenance for Oil & Gas, Power, and Industrial sectors, offering total O&M services and project lifecycle support | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 404 | 2009 |
| 26 | [NRP Projects Private Limited](https://www.tamtam.ai/c/nrp-projects-private-limited) (nrpprojects.in)<br>A leading engineering construction provider in India, specializing in design, engineering, procurement, and project management services for the oil and gas industry | Oil and Gas | 🇮🇳 Chennai | 399 | 1964 |
| 27 | [Nippo (Indo National Ltd)](https://www.tamtam.ai/c/nippo-indo-national-ltd) (nippo.in)<br>A leading manufacturer and marketer of dry cell batteries, consumer battery products, LED lights, and electrical accessories in India Also distributes razors and blades | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 399 | 1972 |
| 28 | [Everrenew](https://www.tamtam.ai/c/everrenew) (everrenew.com)<br>Everrenew provides project management solutions for wind, solar, and hybrid projects, along with asset management, to help organizations move towards a sustainable future | Services for Renewable Energy | 🇮🇳 Chennai | 384 |  |
| 29 | [Kshema Power](https://www.tamtam.ai/c/kshema-power) (kshemapower.com)<br>A specialized Indian EPC service company in the Renewable energy industry, with expertise in Wind projects and land development for solar projects | Renewable Energy Semiconductor Manufacturing | 🇮🇳 Chennai | 345 | 1998 |
| 30 | [Tamilnadu Electricity Board](https://www.tamtam.ai/c/tamilnadu-electricity-board) (tangedco.gov.in)<br>A government-owned power generation and distribution company based in Tamil Nadu, India | Utilities | 🇮🇳 Chennai | 341 |  |

## 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 11, 2026.

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Source: https://www.tamtam.ai/l/energy-companies-chennai