Solar Energy Corporation of India Limited (SECI) has declared the winners of its Inter-State Transmission System connected firm and dispatchable renewable energy tender, awarding a set of capacities to multiple developers. Leading renewable companies Serentica Renewables and ACME Solar emerged as the largest winners, each securing 600 Megawatt (MW) at a tariff of Rs6.28/kWh, while AMPIN Energy Transition secured 199 MW at the same tariff and Adyant Emnersol Private Limited, a subsidiary of Datta Infra, won 100 MW at Rs6.27/kWh. The announcement followed the competitive SECI-FDRE-VII auction and was presented as part of SECI's effort to scale dispatchable clean power. The published results also stated that the awarded capacity totals 899 MW.

SECI had issued the tender for 1,200 MW of ISTS-connected renewable energy projects with assured peak supply, designed to provide 4,800 Megawatt-hour (MWh) of electricity daily during high demand hours. The framework requires developers to supply power during peak hours for four hours each day and sets a minimum project size of 50 MW and a maximum of 600 MW. The tender aligns with procurement guidelines from the Ministry of Power and the clean energy expansion goals of the Ministry of New and Renewable Energy. Under the scheme SECI will act as an intermediary nodal agency and sign 25-year power purchase agreements with successful bidders.

The tender mandates that projects integrate Energy Storage Systems (ESS) and deliver 4,000 kWh per MW of contracted capacity during the daily peak hours selected by buying entities, typically during non-solar evening and morning periods. Developers are required to build projects on a Build-Own-Operate basis, including land acquisition, project installation and transmission infrastructure up to the interconnection point. Co-location of renewable generation and storage assets is required to ensure reliable peak power delivery. The design aims to enable renewable generation to meet firm demand in non-solar hours.

The closely clustered winning tariffs indicate increasing maturity in India's firm and dispatchable renewable energy market as developers combine renewable generation with storage to supply peak hour electricity. SECI's awards form part of a broader push to scale dispatchable clean power and support procurement across buying entities nationwide.