Chhattisgarh State Power Distribution Company (CSPDCL) has invited bids to develop 380 MW/760 MWh of standalone battery energy storage systems (BESS).

Bids must be submitted by September 30, 2025. Bids will be opened on October 1.

Bidders must pay a tender fee of ₹29,500 (~$334) and furnish an earnest money deposit of ₹220,000 (~$2,496)/MW.

Selected bidders must provide a performance bank guarantee of ₹1.1 million (~$12,481)/MW.

Successful bidders will sign a 12-year battery energy storage purchase agreement (BESPA) with CSPDCL.

The BESS must be designed for interconnection with CSPDCL’s substation. The projects must be commissioned within 18 months of the effective BESPA date. It must be available for two operational cycles daily.

The storage system will draw power from CSPDCL for charging and inject energy back into the distribution company’s network per the dispatch instructions issued by the state load despatch center or power management cell.

Selected bidders must also establish a comprehensive remote monitoring system covering the BESS and CSPDCL’s central control command centre, with mandatory online monitoring, integration with the central system. The monitoring system must also include modules such as battery management, asset management, live monitoring, performance analysis, ticket management, supervisory control and data acquisition integration, alarms, historian reports, and mobile apps.

Only commercially established and operational technologies must be used to minimize the technology risk and achieve timely commissioning.

The projects must achieve a minimum AC-to-AC round-trip efficiency of 85% and maintain 95% annual availability.

Any shortfall will attract liquidated damages of twice the capacity charges for non-available capacity.

Bidders must have a net worth of ₹7.4 million (~$83,956)/MW as of the last date of the previous financial year or at least seven days before the bid submission deadline.

Last year, Solar Energy Corporation of India commissioned a 40 MW/120 MWh BESS associated with a 100 MW solar power project in Rajnandgaon, Chhattisgarh.

India installed over 341 MWh of BESS in 2024, marking an over sixfold increase from the 51 MWh installed in 2023, according to Mercom India Research’s India’s Energy Storage Landscape.