| # | Company | Employees |
|---|---|---|
| 1 |
Mahindra Groupmahindra.com
Leading multinational federation with businesses in farm equipment, vehicles, IT, finance, renewable energy, agriculture, logistics, hospitality, and real estate. |
237,131 |
| 2 |
Larsen & Toubrolarsentoubro.com
Multinational company specializing in engineering, procurement, construction projects, hi-tech manufacturing, and sustainability-focused services across over 50 countries worldwide. |
142,350 |
| 3 |
Aditya Birla Groupadityabirla.com
An innovative global conglomerate offering a wide range of products and services, focused on responsible business practices and stakeholder value creation |
82,509 |
| 4 | 41,996 | |
| 5 |
RPG Grouprpggroup.com
A diversified business group with a turnover of over US$ 44 billion, operating in infrastructure, automotive, IT, pharmaceuticals, energy, and plantations |
40,984 |
| 6 |
Indian Oil Corporation Limited
A national oil company in India involved in the entire hydrocarbon value chain, including refining, transportation, marketing, exploration, production, and petrochemicals |
29,849 |
| 7 | 24,342 | |
| 8 |
Bharat Petroleum Corporation Limitedbharatpetroleum.in
Refining crude oil, marketing petroleum products, with significant presence in upstream and downstream oil and gas sectors, targeting net-zero by 2040. |
23,037 |
| 9 |
Godrej & Boyce Mfg. Co. Ltd.godrejandboyce.com
A trusted brand offering diverse products and services, including locks, consumer goods, furniture, precision manufacturing, aerospace, and infrastructure development, with a focus on meaningful work |
19,330 |
| 10 |
KEC International Ltd.kecrpg.com
Designs, manufactures, supplies, and constructs turnkey projects for power transmission, railways, civil infrastructure, and renewable energy globally. |
13,775 |
| 11 |
TATA Powertatapower.com
One of India's largest power companies, with a focus on sustainable energy generation, transmission, distribution, and clean energy solutions for consumers |
13,591 |
| 12 | 10,548 | |
| 13 |
L&T Hydrocarbon Engineering Limitedlntenergy.com
Provides integrated engineering, procurement, fabrication, construction, and project management solutions for large, complex offshore and onshore hydrocarbon projects worldwide. |
9,890 |
| 14 |
Shapoorji Pallonji Groupshapoorjipallonji.com
A global organization providing end-to-end solutions in engineering, construction, infrastructure, real estate, water, energy, and financial services with a focus on sustainability and safety |
8,209 |
| 15 |
KALPATARU PROJECTS INTERNATIONAL LIMITEDkalpataruprojects.com
Leading global engineering, construction company. Diversified portfolio in power, buildings, water, railways, oil, urban mobility, highways, airports. Sustainable development commitment, environmental goals. |
7,847 |
| 16 |
Welspun Worldwelspun.com
A rapidly growing conglomerate with diverse businesses in line pipes, home textiles, oil and gas, steel, and more across 50 countries Prioritizes customer centricity, innovation, and employee empowerment |
6,956 |
| 17 |
Polycab India Limitedpolycab.com
Leading electrical solutions provider in India, focused on innovation for a brighter, greener, and well-designed future Connecting ideas for a sustainable tomorrow |
5,869 |
| 18 |
CG Power and Industrial Solutions Limitedcgglobal.com
Global leader in managing and applying electrical energy with products and services for utilities, power generation, and industries worldwide |
5,243 |
| 19 |
Sterling and Wilsonsterlingandwilson.com
A multinational EPC solutions provider operating in 30 countries, specializing in Data Centers, Renewable Energy, MEP-IEPC, Transmission & Distribution, and more |
5,241 |
| 20 |
Nayara Energynayaraenergy.com
International energy company with strong presence in hydrocarbon value chain, from refining and production to marketing and retail of oil and petroleum products. |
5,107 |
| 21 |
BARCbarc.gov.in
A leading nuclear research center in India, specializing in advanced research in nuclear science, engineering, and related areas for NPCIL |
3,987 |
| 22 |
JSW Energy Ltdjswenergy.in
Leading private sector power producer focused on efficient resource utilization, social and economic benefits, minimal environmental impacts, and innovative growth |
3,927 |
| 23 |
Tata Power Renewable Energy Limitedtatapowersolar.com
Renewable utility capacity developer managing solar, wind, and storage projects alongside cell manufacturing, rooftop installations, water pumps, and electric vehicle charging infrastructure. |
3,385 |
| 24 |
Bajaj Groupbajajgroup.org
The company operates in the Sugar, Ethanol, Power, and FMCG industries while also engaging in philanthropic efforts to create self-reliant villages |
3,316 |
| 25 |
Siemenssiemens.com
A German conglomerate specializing in industrial manufacturing, healthcare, energy, and infrastructure It is a leading maker of medical diagnostics equipment |
2,880 |
| 26 |
Lauritz Knudsen Electrical & Automationlk-ea.com
Market leader in providing electrical distribution, monitoring, and control solutions in low voltage category, including switchgear, motor starters, automation, energy management, and modernization solutions |
2,855 |
| 27 |
APAR Industries Limitedapar.com
A global supplier of conductors, cables, oils, polymers, and lubricants, focusing on innovation, efficiency, and sustainability to solve real-world challenges |
2,804 |
| 28 |
K Raheja Corpkrahejacorp.com
Leading developer in India with expertise in commercial and residential real estate, hospitality, retail, malls, and sustainable development, creating innovative and environmentally-friendly spaces |
2,753 |
| 29 |
Waaree Groupwaaree.com
Global leader in solar energy solutions with a 12 GW manufacturing facility, delivering premium solar modules worldwide and offering diverse solar products & services |
2,649 |
| 30 |
SolarSquaresolarsquare.in
India's leading residential solar provider, offering trust, transparency, financing, and top-notch after-sales service to help homeowners switch to solar energy |
2,493 |
| 31 |
Greaves Cotton Limitedgreavescotton.com
A diversified engineering company with over 163 years of legacy, specializing in fuel agnostic powertrain solutions, e-mobility, aftermarket & retail, and sustainable technologies |
2,397 |
| 32 |
Maharashtra State Electricity Distribution Co (Msedcl)mahadiscom.in
Mahavitaran is a public sector electricity distribution company in Maharashtra, India, controlled by the state government It is the largest utility in India |
2,351 |
| 33 |
Avaada Groupavaada.com
A visionary energy conglomerate involved in solar modules production, renewable power generation, and large scale projects for green hydrogen and sustainable fuels |
2,295 |
| 34 |
Transrail Lighting Limitedtransrail.in
An integrated provider of power transmission, distribution, rural electrification, and outdoor lighting solutions, driven by passion for quality and innovation |
2,041 |
| 35 |
Adani Electricityadanielectricity.com
India's top power utility focused on empowering customers to make sustainable choices, providing innovative services, and delivering reliable power in Mumbai |
1,841 |
| 36 |
Sterling and Wilson Renewable Energysterlingandwilsonre.com
Global EPC provider for utility-scale solar, floating solar, hybrid & energy storage solutions with over 1780+ GWp portfolio worldwide Operations in 29 countries |
1,817 |
| 37 |
Reliance Infrastructurerinfra.com
A leading infrastructure company involved in power generation, distribution, defense, metro rail, airports, EPC, roads, and transmission projects in India |
1,729 |
| 38 |
Lloyds Metals & Energy Ltdlloyds.in
A manufacturing company with iron ore mines in Maharashtra, producing coal-based DRI, power generation, and expanding with pellet plant and wire rod mill |
1,678 |
| 39 |
L&T Heavy Engineeringlarsentoubro.com
Global leader in supplying engineered equipment for refineries, oil & gas, nuclear plants Utilizes Industry 40 techniques in manufacturing with state-of-the-art facilities in India |
1,593 |
| 40 |
Shree Renuka Sugars Limitedrenukasugars.com
A leading sugar manufacturer and refiner in India, specializing in sugar exports, fuel ethanol production, power generation, and sugar commodity trading |
1,591 |
| 41 |
The Great Eastern Shipping Co. Ltdgreatship.com
India's largest private sector shipping and offshore business involved in transportation of crude oil, gas, dry bulk commodities, and servicing oil companies |
1,579 |
| 42 |
Wind World India L.T.Dwindworldindia.com
A leading player in the wind energy sector in India, with over 6200 wind energy converters installed and a total capacity of over 4500 MW |
1,398 |
| 43 |
Bharat Bijlee Ltdbharatbijlee.com
A leading electrical engineering company in India with expertise in transformers, electric motors, drives & automation, magnet technology machines, and turnkey projects |
1,279 |
| 44 |
RenewSys India Pvt. Ltd.renewsysworld.com
Integrated solar photovoltaic manufacturer producing modules, encapsulants, backsheets, and cells across multiple facilities for global renewable energy markets while maintaining extensive research laboratories. |
1,238 |
| 45 |
Jyoti Structures Limitedjyotistructures.in
Provider of turnkey solutions for High Voltage Power Transmission Lines and Substations with expertise in design, engineering, manufacturing, construction, and project management |
1,203 |
| 46 |
Powerica Limitedpowericaltd.com
A leading Indian manufacturer of Cummins Diesel and Gas Generators, providing complete power solutions with a workforce of over 1400 |
1,182 |
| 47 |
Karamtara Engineeringkaramtara.com
Leading engineering and manufacturing company in the Transmission and Distribution (T&D) Segment of Power Sector, offering integrated solutions with global reach |
1,097 |
| 48 |
Welspun Enterprises Ltdwelspunenterprises.com
An infrastructure development firm specializing in road, water projects, and oil & gas investments, focusing on sustainable growth and efficient transport solutions |
1,071 |
| 49 |
Mahanagar Gas Limitedmahanagargas.com
A leading natural gas distribution company in Mumbai and surrounding areas with over 2 million customers, offering PNG and CNG services for households and vehicles |
1,042 |
| 50 |
CleanMaxcleanmax.com
A leading provider of renewable energy solutions for corporates, offering turnkey clean energy projects and services in India, UAE, and Thailand |
982 |
| 51 |
The Choksi Groupthechoksigroup.com
This conglomerate operates in oil and gas, textile, infrastructure, and energy sectors, focusing on growth in India's future infrastructure and clean energy needs |
911 |
| 52 |
Greatshipgreatshipglobal.com
Provider of quality offshore oilfield services with technologically advanced vessels and modern drilling units, supporting exploration and production activities globally |
908 |
| 53 |
Stelmec Limitedstelmec.com
A leading company in the Indian power industry, providing innovative and sustainable energy solutions including power distribution and transmission services |
773 |
| 54 |
Apraava Energyapraava.com
Integrated energy solutions provider with a focus on renewable energy, power transmission, and smart meters, committed to a low-carbon future and sustainable legacy |
715 |
| 55 |
Hinduja Group Limitedhindujagroup.com
A global conglomerate with diverse business verticals, focusing on philanthropy, leadership, and stability, spanning across 100 countries with multi-billion-dollar revenue |
692 |
| 56 |
Savita Oil Technologies Limitedsavita.com
India's leading petroleum specialities provider with a diverse product portfolio including Transformer Oils, Lubricants, Renewable Energy solutions, and environmentally friendly products |
690 |
| 57 |
Maharashtra State Power Generation Co. Limited. (Mahagenco.)
An electrical/electronic manufacturing company in Mumbai, Maharashtra, India, specializing in power generation and distribution systems |
685 |
| 58 |
Oil Field Instrumentation (India) PVT. LTD.ofiindia.com
A provider of specialized equipment and services for the oilfield sector, offering top-notch mud logging services and high-end software solutions worldwide |
626 |
| 59 |
TEMA INDIA PVT LTDtemaindia.com
A leading manufacturer of Process Equipment for Oil&Gas, Chemicals, Nuclear, Power, and New Energy industries, known for patented designs prioritizing safety and reliability |
609 |
| 60 |
Ashapura Indiaashapura.com
A leading provider of multi-mineral solutions in India since 1960, offering a wide range of mineral products and services |
600 |
| 61 |
Aegis Logistics Limitedaegisindia.com
A subsidiary of Aegis Group, the company is a leader in India's downstream oil and gas sector, specializing in LPG distribution and logistics services |
591 |
| 62 |
Mahindra Sustenmahindrasusten.com
A young, innovative company in the renewables sector, focused on setting ambitious, planet-benefiting long-term goals for sustainability |
581 |
| 63 | 13 |
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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 Oct 24, 2026.
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