# List of energy companies in Tamil Nadu

Tamtam tracks 49 energy companies headquartered in Tamil Nadu. This list ranks all of them by number of employees on LinkedIn, led by Murugappa Group, BGR Energy Systems and EID Parry India Ltd. Their median headcount is 452. Half of them were founded in 2002 or later. The most common headquarters are Chennai (38) and Coimbatore (6).

The energy sector in Tamil Nadu is represented by a mix of large, established groups and mid-sized firms. These companies are primarily involved in power generation, transmission, and distribution, as well as the manufacturing of related equipment and components. The list includes conglomerates with diverse interests, specialized engineering firms, and companies focused on renewable energy.

Notable companies include Murugappa Group, a conglomerate with businesses in engineering and manufacturing; BGR Energy Systems, which provides end-to-end utility industry solutions; Fuji Electric India, a provider of energy and automation solutions; and Siemens Gamesa Renewable Power Private Limited, a manufacturer of wind energy generators. A clear pattern is the strong concentration of headquarters in Chennai, indicating the city's role as a central hub for the energy industry in the region.

🇮🇳 Tamil Nadu · 49 companies · Updated Nov 12, 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 | [R.K.M. Powergen Pvt. Ltd.](https://www.tamtam.ai/c/r-k-m-powergen-pvt-ltd)<br>A joint venture company focused on setting up coal-based power projects in Chhattisgarh, with a strong presence in civil contracting and construction | Electric Power Generation | 🇮🇳 T. Nagar | 535 | 2004 |
| 20 | [BANNARI AMMAN SUGARS LTD](https://www.tamtam.ai/c/bannari-amman-sugars-ltd) (bannari.com)<br>A food production company based in India, specializing in sugar products and located on Trichy Road in Coimbatore | Food and Beverage Manufacturing | 🇮🇳 Coimbatore | 520 |  |
| 21 | [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 |
| 22 | [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 |
| 23 | [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 |
| 24 | [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 |
| 25 | [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 |
| 26 | [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 |
| 27 | [ZF WIND POWER COIMBATORE LIMITED](https://www.tamtam.ai/c/zf-wind-power-coimbatore-limited)<br>Manufacturer of machinery in Coimbatore, Tamil Nadu, India specializing in wind power technology and services | Industrial Machinery Manufacturing | 🇮🇳 Coimbatore | 435 |  |
| 28 | [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 |
| 29 | [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 |
| 30 | [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 |
| 31 | [Sepco Shandong Tiejun Electric Power Company Limited](https://www.tamtam.ai/c/sepco-shandong-tiejun-electric-power-company-limited) (sepco3.com)<br>A subsidiary of Power Construction Corporation of China specializing in various power plant construction services, including thermal, solar, wind, and more | Construction | 🇮🇳 Cuddalore | 389 |  |
| 32 | [Lakshmi Electrical Control Systems (LECS)](https://www.tamtam.ai/c/lakshmi-electrical-control-systems-lecs) (lecsindia.com)<br>Established in 1981, manufacturing control gear, panels, plastic components, and toolroom moulds Committed to producing high-quality products with ISO accreditations | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Coimbatore | 385 |  |
| 33 | [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 |  |
| 34 | [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 |
| 35 | [Rajshree Sugars & Chemicals Ltd](https://www.tamtam.ai/c/rajshree-sugars-and-chemicals-ltd) (rajshreesugars.com)<br>A food production company based in India, specializing in sugar and chemicals manufacturing | Food and Beverage Manufacturing | 🇮🇳 Coimbatore | 345 |  |
| 36 | [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 |  |
| 37 | [SWELECT Energy Systems Ltd](https://www.tamtam.ai/c/swelect-energy-systems-ltd) (swelectes.com)<br>Public listed manufacturer of solar panels and balance systems providing high efficiency mono perc modules and electrical accessories for global power projects. | Renewable Energy Semiconductor Manufacturing | 🇮🇳 Chennai | 337 | 1984 |
| 38 | [IndianOil LNG Private Limited](https://www.tamtam.ai/c/indianoil-lng-private-limited) (indianoillng.com)<br>Specializes in building and operating a world-class liquefied natural gas import terminal with a capacity of 5 MMTPA in Chennai, India | Oil and Gas | 🇮🇳 Chennai | 326 |  |
| 39 | [Atandra Energy Private Limited](https://www.tamtam.ai/c/atandra-energy-private-limited) (atandra.in)<br>The company specializes in power and energy management solutions, offering a range of products to measure, protect, conserve energy, and provide service support across India | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 317 | 2012 |
| 40 | [OPG POWER GENERATION PRIVATE LIMITED](https://www.tamtam.ai/c/opg-power-generation-private-limited) (opgpower.com)<br>A power generation business situated in Chennai, Tamil Nadu, India, specializing in the production and supply of electricity | Electric Power Generation | 🇮🇳 Chennai | 311 | 2006 |
| 41 | [INDOCOOL Composites Private Limited](https://www.tamtam.ai/c/indocool-composites-private-limited) (indocool.in)<br>A customer-centric manufacturer of polymer composite products with expertise in FRP composites for wind turbines and various other sectors | Manufacturing | 🇮🇳 Ranipet | 309 | 1999 |
| 42 | [TAG Corporation](https://www.tamtam.ai/c/tag-corporation) (tagcorporation.net)<br>An India-based company specializing in electrical/electronic manufacturing services | Appliances, Electrical, and Electronics Manufacturing | 🇮🇳 Chennai | 236 | 1972 |
| 43 | [SHREE ABIRAMI ENGGINEERING WORKS](https://www.tamtam.ai/c/shree-abirami-enggineering-works) (abiramiengg.com)<br>A leading Indian company specializing in re-manufacturing transformers, motors, and generators, with a strong presence in both domestic and international markets | Electrical Equipment Manufacturing | 🇮🇳 Chennai | 212 | 1992 |
| 44 | [Leap Green Energy Pvt. Ltd.](https://www.tamtam.ai/c/leap-green-energy-pvt-ltd) (leapgreenenergy.com)<br>A rapidly expanding renewable energy platform based in India, specializing in various sustainable energy solutions | Renewable Energy Power Generation | 🇮🇳 Coimbatore | 199 | 2009 |
| 45 | [Bhartiya Nabhikiya Vidyut Nigam Ltd. ( BHAVINI )](https://www.tamtam.ai/c/bhartiya-nabhikiya-vidyut-nigam-ltd-bhavini) (bhavini.nic.in)<br>A government company under DAE focused on constructing and operating Fast Breeder Reactors for electricity generation in India | Nuclear Electric Power Generation | 🇮🇳 Chengalpattu | 199 | 2004 |
| 46 | [Cryolor](https://www.tamtam.ai/c/cryolor) (cryolor.com)<br>Specializes in manufacturing high-quality cryogenic storage and distribution equipment, recognized for optimized total cost of ownership. | Industrial Machinery Manufacturing | 🇮🇳 Acharapakkam | 199 | 1983 |
| 47 | [Evolve Energy Group](https://www.tamtam.ai/c/evolve-energy-group) (evolveenergygroup.com)<br>A premium provider of solar power and solar water heating solutions, emphasizing quality components for sustainable and renewable energy projects | Renewable Energy Semiconductor Manufacturing | 🇮🇳 Chennai | 181 | 2011 |
| 48 | [AVR Energies - An O&M Company](https://www.tamtam.ai/c/avr-energies-an-o-and-m-company) (avrenergies.com)<br>A leading Asset Management Service Provider in India, offering a wide range of services including project management, operation & maintenance, and shutdown services across various industries | Electric Power Generation | 🇮🇳 Chennai | 75 | 2021 |
| 49 | [FENFEO AUTOMATION PRIVATE LIMITED](https://www.tamtam.ai/c/fenfeo-automation-private-limited) (rapidevcharge.com)<br>An innovative enterprise focusing on evolving technology for renewable energy, particularly in creating faster and safer electric vehicle charging stations | Renewable Energy Semiconductor Manufacturing | 🇮🇳 Coimbatore | 6 | 2018 |

## 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 Tamil Nadu

- [The largest companies in Tamil Nadu](https://www.tamtam.ai/l/largest-companies-tamil-nadu) (1,609)
- [Manufacturers in Tamil Nadu](https://www.tamtam.ai/l/manufacturers-tamil-nadu) (303)
- [Multinational companies in Tamil Nadu](https://www.tamtam.ai/l/multinational-companies-tamil-nadu) (285)
- [Education providers in Tamil Nadu](https://www.tamtam.ai/l/education-companies-tamil-nadu) (258)
- [Companies with in-house R&D in Tamil Nadu](https://www.tamtam.ai/l/r-and-d-companies-tamil-nadu) (226)
- [Higher Education companies in Tamil Nadu](https://www.tamtam.ai/l/higher-education-companies-tamil-nadu) (168)
- [IT Services and IT Consulting companies in Tamil Nadu](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-tamil-nadu) (152)
- [IT services companies in Tamil Nadu](https://www.tamtam.ai/l/it-services-companies-tamil-nadu) (140)
- [Hardware manufacturers in Tamil Nadu](https://www.tamtam.ai/l/hardware-companies-tamil-nadu) (128)
- [Retail chains in Tamil Nadu](https://www.tamtam.ai/l/retail-chains-tamil-nadu) (96)
- [Automotive manufacturers and suppliers in Tamil Nadu](https://www.tamtam.ai/l/automotive-companies-tamil-nadu) (95)
- [Education Administration Programs companies in Tamil Nadu](https://www.tamtam.ai/l/education-administration-programs-companies-tamil-nadu) (91)
- [Publicly traded companies in Tamil Nadu](https://www.tamtam.ai/l/publicly-traded-companies-tamil-nadu) (83)
- [Professional services firms in Tamil Nadu](https://www.tamtam.ai/l/professional-services-firms-tamil-nadu) (82)
- [Financial services firms in Tamil Nadu](https://www.tamtam.ai/l/financial-services-firms-tamil-nadu) (77)
- [Corporate groups and holding companies in Tamil Nadu](https://www.tamtam.ai/l/holding-companies-tamil-nadu) (77)
- [Critical infrastructure operators in Tamil Nadu](https://www.tamtam.ai/l/critical-infrastructure-operators-tamil-nadu) (76)
- [Companies with a mobile app in Tamil Nadu](https://www.tamtam.ai/l/companies-with-mobile-app-tamil-nadu) (75)
- [Financial Services companies in Tamil Nadu](https://www.tamtam.ai/l/financial-services-companies-tamil-nadu) (75)
- [Healthcare providers in Tamil Nadu](https://www.tamtam.ai/l/healthcare-providers-tamil-nadu) (74)
- [Hospitals and Health Care companies in Tamil Nadu](https://www.tamtam.ai/l/hospitals-and-health-care-companies-tamil-nadu) (70)
- [Motor Vehicle Manufacturing companies in Tamil Nadu](https://www.tamtam.ai/l/motor-vehicle-manufacturing-companies-tamil-nadu) (68)
- [Consulting firms in Tamil Nadu](https://www.tamtam.ai/l/consulting-firms-tamil-nadu) (61)
- [Software Development companies in Tamil Nadu](https://www.tamtam.ai/l/software-development-companies-tamil-nadu) (58)

## The same list elsewhere in India

- [Energy companies in India](https://www.tamtam.ai/l/energy-companies-india) (631)
- [Energy companies in Maharashtra](https://www.tamtam.ai/l/energy-companies-maharashtra) (154)
- [Energy companies in Gujarat](https://www.tamtam.ai/l/energy-companies-gujarat) (64)
- [Energy companies in Haryana](https://www.tamtam.ai/l/energy-companies-haryana) (51)
- [Energy companies in Uttar Pradesh](https://www.tamtam.ai/l/energy-companies-uttar-pradesh) (45)
- [Energy companies in Karnataka](https://www.tamtam.ai/l/energy-companies-karnataka) (44)
- [Energy companies in West Bengal](https://www.tamtam.ai/l/energy-companies-west-bengal) (36)
- [Energy companies in Rajasthan](https://www.tamtam.ai/l/energy-companies-rajasthan) (25)
- [Energy companies in Mumbai](https://www.tamtam.ai/l/energy-companies-mumbai) (92)
- [Energy companies in New Delhi](https://www.tamtam.ai/l/energy-companies-new-delhi) (72)
- [Energy companies in Gurugram](https://www.tamtam.ai/l/energy-companies-gurugram) (44)
- [Energy companies in Chennai](https://www.tamtam.ai/l/energy-companies-chennai) (38)
- [Energy companies in Bengaluru](https://www.tamtam.ai/l/energy-companies-bengaluru) (35)
- [Energy companies in Kolkata](https://www.tamtam.ai/l/energy-companies-kolkata) (34)
- [Energy companies in Ahmedabad](https://www.tamtam.ai/l/energy-companies-ahmedabad) (33)
- [Energy companies in Pune](https://www.tamtam.ai/l/energy-companies-pune) (31)
- [Energy companies in Noida](https://www.tamtam.ai/l/energy-companies-noida) (28)

## The same list elsewhere

- [Energy companies in the world](https://www.tamtam.ai/l/energy-companies-in-the-world) (10,502)
- [Energy companies in Asia](https://www.tamtam.ai/l/energy-companies-in-asia) (1,312)

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