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POWERGRID Issues Tender for 125 MW / 500 MWh Standalone Battery Storage Project in Chhattisgarh
Jan 28, 2026
Power Grid Corporation of India (POWERGRID) has invited bids for the development of a 125 MW / 500 MWh standalone battery energy storage system (BESS) connected to the state transmission network for Chhattisgarh State Power Distribution Company Limited (CSPDCL).
The project will be supported through viability gap funding (VGF) under the Power System Development Fund, aimed at strengthening grid stability and improving power system flexibility.
Bids for the project must be submitted by January 30, 2026, with bid opening scheduled for the same day.
The scope of work includes the supply and installation of the battery system, power conversion systems, transformers, and complete 33 kV medium-voltage bus infrastructure. The BESS will be designed for four-hour on-demand operation, with provisions for limited dual charge–discharge cycles, capped at 420 cycles per year.
Successful bidders will be required to provide comprehensive operation and maintenance services for a period of 15 years. The project is expected to be completed within 15 months from the award date.
To qualify as a prime contractor, bidders must meet at least one of the following technical criteria:
- Prior experience in supplying, erecting, testing, and commissioning grid-connected BESS projects with a cumulative capacity of at least 10 MWh
- Experience in executing at least one solar or wind power project of 50 MW or more
- Experience in commissioning at least two AIS circuit breaker-equipped bays at a minimum 132 kV voltage level within a single substation or switchyard
All referenced projects must have been operational for the past seven years as of the bid submission deadline.
Alternatively, bidders may qualify as battery manufacturers that have supplied a minimum of 50 MWh of batteries for stationary grid applications during the last three years.
Financial eligibility criteria require bidders to maintain a positive net worth over the preceding three financial years, along with a minimum average annual turnover of Rs7.55 billion (approximately $82.44 million). Additionally, bidders must demonstrate access to liquid assets or credit facilities worth at least Rs1.26 billion (around $13.74 million).