SECI Concludes 2,000 MW Solar And 1,000 MW/4000 MWh Energy Storage Auction At ₹2.86 Per kWh
Source：solarquarter
The Solar Energy Corporation of India (SECI) has successfully completed the auction for its 2,000 MW solar power projects integrated with 1,000 MW/4,000 MWh energy storage systems (ESS) under the ISTS-XX program. The auction, conducted through a tariff-based competitive bidding process, attracted strong participation from multiple developers, showing the growing interest in combining solar power with energy storage solutions.
The lowest tariff discovered during the auction was ₹2.86 per kWh, with bids reaching up to ₹2.87 per kWh. A total of 11 companies emerged as winners, marking a major milestone in India’s journey toward large-scale renewable energy and storage integration. Eight of these companies quoted the lowest tariff and became the L1 bidders.
Shivalaya Construction secured the largest capacity of 600 MW at a tariff of ₹2.86 per kWh. Welspun Renewable Energy followed with 200 MW, and MB Power obtained 150 MW, both at the same tariff. Oswal Cables and Purvah Green Power also matched the lowest tariff with capacities of 50 MW and 300 MW, respectively. Banyan Insolation won a 100 MW project, while LC Infra Projects and Stockwell Solar Services each secured 50 MW and 80 MW at ₹2.86 per kWh.
Other winners included SAEL Industries, GH2 Solar, and Navayuga Green Energy, all quoting ₹2.87 per kWh. SAEL Industries bid for 300 MW, GH2 Solar for 50 MW, and Navayuga Green Energy for 120 MW.
The tender for these projects was issued by SECI in July 2025. Under the terms, developers will build, own, and operate (BOO) the projects, which are designed to combine solar photovoltaic (PV) systems with energy storage solutions. Each solar project must include a minimum of 0.5 MW/2 MWh of storage capacity per 1 MW of solar generation. The tender set the maximum capacity for a single bidder at 1,000 MW and a minimum bid size of 50 MW, allowing developers flexibility in choosing project locations connected to either the interstate (ISTS) or intrastate (InSTS) transmission systems.
This auction is expected to significantly boost India’s renewable energy capacity while promoting grid stability through energy storage integration.
