Synopsis: India’s growing power sector underscores the importance of operational capacity in meeting rising electricity demand. This list highlights three major power companies with operational capacity of up to 18,150 MW, supporting energy security and sustainable growth.
India’s power sector is expanding at an unprecedented pace, driven by rising electricity demand, urbanization, and industrial growth. As the world’s third-largest electricity producer and consumer, India generated 1,821 BU in FY25. The sector witnessed a historic shift in FY26, with installed capacity crossing 520 GW, led by a record 52.5 GW addition in just ten months.
Notably, non-fossil fuel capacity has now surpassed fossil fuels, comprising over 52 percent of the total mix. This acceleration is supported by the rapid rollout of the Green Energy Corridor and new storage mandates, firmly placing India on track to exceed its target of 500 GW non-fossil capacity well before 2030
It is India’s largest private thermal power producer, incorporated in 1996 and headquartered in Ahmedabad. The company develops, owns, and operates utility-scale power plants across several states, supplying electricity to distribution companies and industrial customers while focusing on operational efficiency, capacity expansion, and meeting the nation’s rising energy needs.
With a market cap of more than Rs 2.75 lakh crore, the company stock closed at Rs 143 , 2 percent higher than the previous close. Adani Power Ltd operates 13 assets with an installed capacity of 18,150 MW About 60 percent of assets are organic and 40 percent inorganic. Its technology mix includes 9 percent ultra-supercritical, 51 percent supercritical, and 40 percent others. The company has secured 90 percent capacity under PPA tie-ups, leaving 10 percent open for merchant or short-term sales.
Tata Power Company Ltd
Founded in 1919 and part of the Tata Group, the company is one of India’s oldest integrated power companies. Headquartered in Mumbai, it operates across generation, transmission, and distribution, with a growing renewable portfolio. The company emphasizes clean energy transition, smart solutions, and sustainable infrastructure to support India’s evolving power requirements.
With a market cap of more than Rs 1.22 lakh crore, the company stock closed at Rs 382, 2 percent higher than the previous close. Tata Power Company Ltd has a total operational capacity of 16,310 MW, comprising 8,860 MW thermal, 4,906 MW solar, 1,221 MW wind, and 880 MW hydro power, along with 443 MW from waste heat recovery and blast furnace gas. The diversified mix highlights its strong renewable focus alongside conventional generation assets.
Torrent Power
Headquartered in Ahmedabad, it is an integrated power utility that is engaged in generation, transmission, and distribution of electricity. Part of the Torrent Group, it operates thermal and renewable assets and serves multiple cities through licensed distribution networks. The company prioritizes reliability, customer service, and strategic expansion within India’s competitive energy sector.
With its market cap around Rs 74,000 Crore, the company stock closed at Rs 1473, almost 1 percent higher than the previous close. Torrent Power has an installed renewable capacity of 5,039 MWp, with gas-based power forming the majority at 54 percent (2,730 MW). Solar contributes 21 percent (1,026 MW), wind accounts for 18 percent (921 MW), and coal makes up 7 percent (362 MW), reflecting a balanced portfolio supporting reliable and diversified power generation.
JSW Energy Ltd
Incorporated on March 10, 1994, JSW Energy Ltd is a leading private-sector power producer in India with diversified operations across thermal, hydro, wind, and solar generation. Part of the JSW Group, it focuses on renewable expansion, storage solutions, and long-term PPAs to boost green capacity and support India’s sustainable energy transition.
With a market cap of more than Rs 86,000 crore, the company saw its stock close at Rs 490, 3 percent higher than the previous close. As of Q3 FY26, JSW Energy Ltd has an installed capacity of 13,336 MW this was a 64 percent YoY capacity increase. The current capacity comprises 5,658 MW of thermal power, 3,648 MW of wind energy, 2,127 MW of solar capacity, 1,631 MW of hydro power, and 272 MW of hybrid renewable assets, reflecting a diversified and balanced energy portfolio.
CESC Ltd
The company is an integrated power utility engaged in electricity generation, transmission, and distribution, primarily serving Kolkata and nearby regions. It operates thermal and renewable assets while expanding through subsidiaries in distribution franchises and clean energy projects, focusing on reliable supply, regulated returns, and long-term capacity growth. With a market cap of more than Rs 20,000 crore, the company stock closed at Rs 154, 2 percent higher than the previous close.
As of the latest quarter the company has a generation capacity of 2,140 MW, with 78 percent of the capacity linked to its own distribution. The company has 5 thermal power plants. CESC Ltd’s distribution business records more than 4.4 GW peak demand, and operates across five locations including Kolkata, Greater Noida, Rajasthan, Chandigarh, and Malegaon.
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