Tata Power is India’s largest vertically integrated power utility - it makes electricity, moves it across the country, and sells it to over 13 million homes and businesses, all under one roof. The company was born in 1919 as the Tata Hydroelectric Power Supply Company, commissioning its first 40 MW hydro station at Khopoli in 1915, and has spent more than a century layering on new capabilities: entering Delhi’s distribution grid in 2002, building India’s first supercritical Ultra Mega Power Project at Mundra in 2013, acquiring a 1,010 MW renewable portfolio from Welspun in 2016, taking over four Odisha distribution companies in 2020-2021, and opening a 4.3 GW integrated solar cell and module plant in Tamil Nadu in 2023. The recurring approach is to build an integrated platform that spans the full power value chain - generation, transmission, distribution, and now manufacturing - so that each new business can be built with the cash flows and capabilities of the one before it.
Business segments
Five engines at different stages - a regulated distribution cash cow, a thermal legacy under managed decline, a renewables-and-manufacturing growth platform, and two emerging consumer bets on EV charging and energy services - each built with the cash flows of the one before.
1. Distribution: the regulated annuity that pays for everything else
Selling electricity to over 13 million end consumers across seven licensed and franchise territories, where every percentage-point drop in AT&C losses flows directly to profit.
- Paid a regulated return on equity - tariffs are set by state regulators, so the business earns a guaranteed return on the capital it deploys, while any reduction in AT&C (aggregate technical and commercial) losses improves profitability above that floor.
- Three operating models, one playbook - it runs Mumbai and Delhi as full distribution licensees, four Odisha DISCOMs as public-private partnerships with 51% Tata Power and 49% state government ownership, and Ajmer as a 100% distribution franchisee; the Odisha DISCOMs alone reduced AT&C losses from 17.5% to 15.5% in FY26 and posted a PAT of ₹809 crore, nearly double the prior year.
- Smart meters tighten the leakages - over 50 lakh smart meters have been deployed cumulatively (till FY26), with 24+ lakh smart meters installed, enabling digital billing and collection that pushed urban digital payment adoption to 92%.
- Green tariffs create a premium layer - in Mumbai, over 50,000 consumers have opted into a Green Tariff programme at a 25 paisa per unit premium, lifting the clean energy supply mix to roughly 40%.
2. Thermal and hydro generation: the legacy workhorse under managed decline
A fleet of 8,860 MW of coal and gas plants plus 880 MW of hydro that still supplies the bulk of India’s baseload power, but will never grow again.
- Mundra is the giant with a question mark - the 4,150 MW imported-coal plant, India’s first supercritical Ultra Mega Power Project, suspended operations from July 2025 to March 2026 and resumed only after signing a Supplementary PPA with Gujarat; agreements with four other states are still being finalised.
- Earns through multiple channels - Mumbai operations (Trombay and Hydro), Maithon, and Jojobera (Unit 2 and 3) earn regulated returns on equity, Mundra and Jojobera (Unit 1 and 4) sell under PPAs/Fixed Tariff with state DISCOMs, and some plants sell into bilateral captive agreements or the merchant market.
- Coal mines in Indonesia hedge the fuel bill - a 30% stake in PT Kaltim Prima Coal, one of Indonesia’s largest mines with 60 million tonnes per annum capacity, plus a 26% stake in PT Baramulti Suksessarana Tbk, provide fuel security and a share of profit that offsets imported-coal price swings.
- The exit is already signalled - the company has committed to 100% clean generation by 2045 and will not expand its thermal portfolio, subject only to existing contractual obligations and the useful life of its plants.
3. Renewables and solar manufacturing: the growth engine under construction
A utility-scale renewable fleet of 11.6 GW, a 4.9 GW solar cell and module factory, and an EPC business that has built over 15.7 GWp of solar projects - all housed under one subsidiary.
- Long-term PPAs lock in revenue - the 6.7 GW of operational solar and wind assets sell electricity under fixed-price agreements with NTPC, SJVN, NHPC, SECI, and state DISCOMs, with recent FDRE (firm and dispatchable renewable energy) tariffs ranging from ₹4.38 to ₹4.91 per unit.
- The factory feeds the projects - the Tirunelveli plant produced 3,825 MW of modules and 3,759 MW of cells in FY26, supplying both Tata Power’s own rooftop and utility-scale projects and third-party developers, and delivered a PAT of ₹857 crore, more than double the prior year.
- EPC is the largest in India - Tata Power Solar Systems has commissioned 10 GW of cumulative projects, split roughly 4.2 GW in-house and 5.8 GW for third parties, including a 1 GW DCR solar project for SJVN in Rajasthan that used approximately 2.4 million domestically manufactured modules.
- Rooftop solar is a national distribution play - the number-one rooftop solar company in India for eleven consecutive years, it installed 1.7 GWp in FY26 alone through 650 channel partners and over 3,000 retailers across more than 400 districts, serving over 3.7 lakh residential and commercial customers cumulatively.
- Pumped storage and Bhutan hydro fill the intermittency gap - 2,800 MW of pumped storage projects are under development in Maharashtra, while a 5,533 MW clean energy portfolio in Bhutan, including the 600 MW Khorlochhu and 1,125 MW Dorjilung projects already under construction, will supply dispatchable clean power to India.
4. EV charging: the consumer network being built ahead of demand
The largest EV charging network in India, with 5,804 public and semi-public points across 706 cities, plus over 2.14 lakh home chargers installed.
- Paid per session - revenue comes from each charging session at public and bus charging points, plus the sale of home chargers; public charger revenue grew 65% in FY26.
- The app is the gateway - the EZ Charge app has 5.64 lakh registered users and facilitated 30.22 lakh charging sessions delivering 259.64 million units of energy, with over 70% growth in registered users in FY26.
- OEM partnerships lock in the fleet - tie-ups with Tata Motors, Jaguar Land Rover, Hyundai, and MG, plus an MoU with VE Commercial Vehicles for the Eicher Pro X range, ensure chargers are deployed where vehicle manufacturers are pushing electric models.
5. New-age energy solutions: the services layer on top of the grid
An AI-powered energy-management platform, cooling-as-a-service, home automation, and rural microgrids - stitching together hardware, software, and financing for commercial and residential customers.
- Energy-as-a-Service cuts bills - the EnerUni platform, built with TCS, claims up to 20% reduction in energy consumption and roughly 26% tariff savings through demand and time-of-day optimisation for large industrial and commercial clients.
- Cooling sold by the tonne - a 15-year Cooling-as-a-Service contract at Intellion Park in Chennai deploys 12,100 TR of installed capacity with an AI-driven Operations Nerve Centre for real-time monitoring, shifting the customer from owning chillers to buying chilled water.
- Microgrids reach where the grid does not - 196 microgrids with roughly 6 MW of capacity serve more than 22,000 rural consumers across Bihar and Uttar Pradesh, with over 90% of payments collected digitally.
- Home automation and storage complete the stack - the EZ Home brand sells modular switches, motion sensors, and dimmable LEDs through 54 channel partners across 96 cities, while MySine batteries provide a solar-plus-storage solution with 95-98% efficiency and a 10-year life for homes and small businesses.
Group structure and partners
Tata Power is the listed parent of a federation of subsidiaries and joint ventures, each ring-fenced by business line and often co-owned with state governments, financial investors, or strategic partners.
- Renewables sit under TPREL - Tata Power holds an 88.57% stake in Tata Power Renewable Energy Limited, which in turn owns the solar EPC arm (Tata Power Solar Systems), the solar manufacturing arm (TP Solar), the Welspun-acquired 1,010 MW portfolio (Walwhan Renewable Energy), and the microgrid subsidiary; BlackRock Real Assets and Mubadala invested ₹4,000 crore into TPREL in 2022 at a ₹34,000 crore equity valuation.
- Distribution is shared with state governments - Delhi (51% Tata Power, 49% Government of NCT of Delhi) and the four Odisha DISCOMs (51% Tata Power, 49% GRIDCO each) are public-private partnerships, while Ajmer is a 100% franchisee.
- Transmission is a mix of wholly owned and joint-venture corridors - Powerlinks is a 51:49 joint venture with Power Grid Corporation, while SEUPPTCL and NRSS XXXVI are 26% stakes; five new TBCB-won projects (Bikaner Neemrana, Paradeep, Gopalpur, Jejuri Hinjewadi, Jalpura Khurja) are held through wholly owned SPVs.
- International assets are minority stakes - the Indonesian coal mines (30% KPC, 26% BSSR, 26% AGM), Bhutan hydro projects (40% each in Khorlochhu and Dorjilung with Druk Green Power), and African and Georgian hydro plants (50% Itezhi Tezhi, 50% Adjaristsqali) are all equity-accounted investments rather than controlled operations.