Reliance Power Inks 25-Year Pact with SECI for Solar and Battery Storage Project

Reliance NU Suntech, a wholly owned subsidiary of Anil Ambani-led Reliance Power, has entered into a landmark 25-year power purchase agreement (PPA) with the Solar Energy Corporation of India (SECI), a public sector enterprise. The agreement involves the supply of solar power integrated with battery energy storage, marking a significant step in India’s transition toward clean and sustainable energy solutions.

Under this agreement, Reliance NU Suntech will develop Asia’s largest single-site integrated solar and battery energy storage system (BESS) project. The project comprises a solar power capacity of 930 megawatts (MW) coupled with a 465 MW/1,860 megawatt-hour (MWh) BESS. The electricity generated will be supplied at a fixed tariff of ₹3.53 per kilowatt-hour (kWh), as per the company’s official press statement issued on Friday. The company highlighted that this PPA is among the most substantial long-term power offtake arrangements in the country, symbolizing a major leap in India’s journey toward clean energy adoption.

The project is scheduled to be commissioned within the next 24 months and will involve a capital investment of up to ₹10,000 crore. To meet the contractual power supply obligations, the project will deploy over 1,700 megawatts-peak (MWp) of solar generation capacity. This scale of development illustrates Reliance Power’s ambition to significantly contribute to India’s energy transition through large-scale renewable infrastructure.

The agreement follows Reliance NU Suntech’s successful participation in SECI’s Tranche XVII auction held in December 2024. During this auction, NU Suntech emerged as the highest beneficiary, securing the largest allocation among five bidders. The allocation process was conducted via tariff-based competitive bidding. To fulfill contractual requirements and secure the deal, NU Suntech submitted a performance bank guarantee worth ₹378 crore. Impressively, the company managed to complete the entire process—from reverse auction to final agreement signing—within a span of just five months. This rapid execution, according to Reliance Power, is a testament to its operational agility and project implementation capabilities.

With this development, Reliance Power aims to solidify its position in India’s clean energy sector. The company currently operates a diversified energy portfolio totaling 5,305 MW, which includes the 3,960 MW coal-based Sasan Power plant. The new solar and BESS initiative demonstrates Reliance Power’s strategic move to pivot toward renewable energy, complementing its existing operations and aligning with global and national sustainability goals.

Describing the agreement as a "landmark," the company emphasized that it forms a core part of its long-term strategy to become a leader in delivering low-cost, sustainable energy solutions. This new venture represents not only an expansion of Reliance Power’s renewable footprint but also contributes significantly to India's broader energy security and decarbonization agenda.