SECI FloatsTender for 600 MW/1200 MWh Battery Storage with 15 Years of Operation and Maintenance

The Solar Energy Corporation of India Ltd. (SECI) has issued a Request for Proposals (RfP) for the supply of a 600 MW / 1200 MWh Battery Energy Storage System (BESS).

As per the tender, BESS suppliers will be responsible for the full delivery of the DC-side package, along with a comprehensive service and maintenance agreement lasting 15 years. The bidding process will be conducted online and includes an e-reverse auction, signalling SECI’s continued push for price transparency and competitive participation.

As per the tender, the submission process includes both online and offline components. The deadline for online bid submissions is set for September 8, 2025, while offline documents must be submitted by September 10, 2025. The bids will be opened on September 11. A pre-bid meeting has been scheduled for August 19, 2025., providing an opportunity for prospective bidders to seek clarifications on the RfP.

The financials of the tender outline a bid processing fee of IR 25,000 plus GST, with no cost for the RfP document itself. The Earnest Money Deposit (EMD) required is IR 4,21,600 per MW, and the Performance Bank Guarantee (PBG) has been set at 10 percent of the final contract value. The scale of this tender implies that total EMD commitments for the full 600 MW could exceed INR 25 crore, underscoring the project's magnitude.

All relevant documents, including the main RfP, project layout, Annexure B, and the integrity pact, were uploaded on August 4 and are available for download on SECI’s website. A format for submitting queries has also been provided in Excel format to streamline communication ahead of the pre-bid meeting.

This initiative highlights SECI’s growing emphasis on energy storage as a critical pillar of India's renewable energy roadmap. As the demand for grid flexibility grows, large-scale storage tenders like this one are expected to become more frequent. 

Interested bidders may refer the document for further details.