NLC India began as a state enterprise to turn a vast lignite deposit in Tamil Nadu into electricity, and nearly seven decades later it still runs on that same logic: own the fuel, burn it at the pithead, and sell the power. It has since added coal mining, built a national thermal fleet, and become the first central public-sector company to cross a gigawatt of solar capacity - all while remaining majority-owned by the Government of India. The recurring approach is vertical integration: every major power plant sits on fuel the company already controls, and every new venture - renewables, critical minerals, green hydrogen - extends that control into the next resource.
Business segments
Four engines at different stages - a mining-and-thermal cash cow, a fast-scaling renewables platform, and a portfolio of emerging bets on minerals and green molecules - each built on the fuel the company already owns.
1. Mining: the fuel that feeds everything else
The company digs up roughly half of India’s lignite and runs a growing coal operation, but the real advantage is that most of it never travels far - it goes straight into the company’s own power plants next door.
- Lignite at the pithead - three open-cast mines at Neyveli and one at Barsingsar in Rajasthan give it 30.10 million tonnes per annum of lignite capacity, and because the thermal stations sit right at the mine mouth, there is no rail-freight cost or supply-chain middleman. The company holds about 70% of India’s measured lignite reserves and produces roughly 51% of the country’s output.
- Coal that travels further, but still on its own terms - the Talabira II & III mines in Odisha add 20 million tonnes per annum of coal capacity, operated through a mine-developer-and-operator model, and the fuel goes to its own Tuticorin plant, to NTPC under a five-year agreement, and to the open market via e-auction. In the latest year, Talabira hit its highest-ever production and dispatch.
- Four more coal blocks are being opened - Pachwara South in Jharkhand (9 million tonnes per annum) began mining in late 2025 to feed the Ghatampur thermal plant, while the commercial blocks Machhakata (30 million tonnes per annum, its biggest mining project ever), New Patrapara South (12 million tonnes per annum), and North Dhadu (3 million tonnes per annum) are under implementation.
- Lignite also sold raw - a long-term fuel-supply agreement exists with independent power producer TAQA Neyveli, and the company sells lignite through e-auction to industries that use it for captive power and refractories, with a customer network built over more than a dozen years of annual buyer meets.
2. Thermal power: the base-load backbone
With nearly six gigawatts of installed thermal capacity - half of it wholly owned and half in joint ventures - the company earns steady, regulated returns by selling electricity to state distribution companies under long-term contracts, while the fuel comes from its own mines.
- Lignite-fired stations at the mine gate - five wholly owned plants totalling 3,640 megawatts sit at the pitheads in Neyveli and Barsingsar, including the New Neyveli Thermal Power Station whose 500-megawatt lignite boilers were the first of their kind in India. The plants consistently run at plant-load factors above the all-India average - in one recent quarter, 80% against a national 70%.
- Joint-venture coal plants extend the reach - NTPL’s 1,000-megawatt plant at Tuticorin (89% owned) and NUPPL’s fully commissioned 1,980-megawatt Ghatampur plant in Uttar Pradesh (51% owned) together add 2,320 megawatts, with Ghatampur marking the company’s entry into supercritical technology.
- Revenue comes from long-term PPAs with regulated tariffs - the Central Electricity Regulatory Commission sets the rates, and the company recovers both fixed charges and variable fuel costs from state electricity boards, with a regulatory deferral account that captures costs to be recovered in future tariff periods. Surplus power that beneficiaries do not requisition is sold on the Indian Energy Exchange, where the company has been the top seller in the real-time market.
- Two large thermal projects are in the pipeline - a 2,400-megawatt ultra-supercritical coal plant at Talabira in Odisha, fed by the adjacent Talabira mines via conveyor, and a 1,320-megawatt lignite expansion at Neyveli, with TANGEDCO having expressed willingness to procure the entire capacity and the Ministry of Power allocating capacity to TANGEDCO and Puducherry Electricity Department.
3. Renewables: the growth engine being carved out for its own future
The company was the first central public-sector enterprise to cross a gigawatt of solar, and it has now moved its entire 1,734-megawatt operating renewable portfolio into a separate subsidiary that is headed for a public listing - while a second subsidiary builds the next six gigawatts.
- Assets moved into a dedicated company - NLC India Renewables Limited (NIRL) took over seven operational projects on 1 January 2026, covering 1,430 megawatts of solar and wind capacity across seven states, with another 5,810 megawatts under implementation and 3,885 megawatts tied up through joint ventures. An initial public offering is planned for the coming financial year.
- A second subsidiary for future projects - NLC India Green Energy Limited (NIGEL) was set up to build new renewable capacity, targeting six gigawatts by 2030, and has already signed a 25-year power purchase agreement with Gujarat Urja Vikas Nigam Limited for 600 megawatts of solar.
- Joint ventures with state entities lock in offtake - partnerships with Rajasthan’s utility for a 3x125 MW lignite thermal plant, with Assam for a 51:49 renewable generation venture, and with Odisha’s grid corporation for solar, pumped hydro, and green hydrogen create a pipeline of projects where the buyer is already at the table.
- The 300-megawatt Barsingsar solar park came online in phases during the latest year - 53 megawatts in August, 106 in November, and the final 141 megawatts in January, pushing total installed renewable capacity to 1,766 megawatts at that point.
4. Emerging businesses: placing bets on the next set of resources
The company is using its mines, land, and engineering capability to enter adjacent industries - turning overburden into construction sand, bidding for critical-mineral blocks, building battery storage, and testing green hydrogen - all at pilot or early-commercial scale.
- Mine overburden becomes manufactured sand - a 1-million-tonne-per-annum washed silica sand plant at Mine-I was commissioned in early 2026 and commercial sale has begun, while a smaller plant at Mine-IA is already running.
- Critical minerals for the domestic supply chain - the company won phosphorite and limestone blocks in Chhattisgarh in a government auction, signed agreements with IREL and Khanij Bidesh India for rare-earth and strategic-mineral projects, and is working with BARC to extract rare earths from fly ash.
- Battery storage at grid scale - NIRL won a 250-megawatt/500-megawatt-hour standalone battery storage award from Tamil Nadu’s green energy corporation, and the total storage pipeline stands at 3,300 megawatt-hours across three contracts with state and central agencies.
- Green hydrogen and coal gasification in early stages - a 4-megawatt green-hydrogen project using PEM electrolysers is under construction at Neyveli, producing 300 kilograms of hydrogen per day at 99.999% purity, while feasibility studies for lignite-to-methanol and underground coal gasification with Reliance Industries are in progress.
Group structure and partners
A holding company with the Government of India at 72%, flanked by thermal joint ventures with state utilities and two wholly owned renewables subsidiaries - one holding the existing assets, the other building the next wave.
- Thermal joint ventures share ownership with the offtaker - NTPL (89% NLCIL, 11% TANGEDCO) runs the Tuticorin coal plant; NUPPL (51% NLCIL, 49% Uttar Pradesh’s generation utility) runs the Ghatampur plant and the Pachwara South coal block that feeds it; and a new venture with Rajasthan’s utility (74:26) will build a lignite-fired station in Bikaner.
- Renewables are split into two wholly owned subsidiaries - NIRL holds the operating portfolio and is headed for an IPO; NIGEL builds new projects and targets six gigawatts by 2030. Under NIRL, joint ventures with Assam, Rajasthan, Tamil Nadu, PTC India, Odisha, NCRTC, and MAHAPREIT are either formed or approved.
- A 50:50 venture with Coal India - Coal Lignite Urja Vikas Private Limited was set up to develop conventional and non-conventional power projects and has already received an order for a 40-megawatt solar project in Chhattisgarh.
- Strategic partnerships extend the technical reach - memoranda of understanding with IREL and KABIL for critical minerals, with GRIDCO and APDCL for renewable projects in Odisha and Assam.