Solar Energy Corporation of India (SECI) issued a global tender to appoint Battery Energy Storage System Developers (BESSD) to provide power generated through 4,000 MW/16,000 hours of stand-alone battery energy storage systems (BESS). Bids have been invited till November 23, 2026.
The tender document consists of two packages. According to Package-I, SECI intends to install 2.5 GW / 10 GW hours of BESS in Rajasthan, whereas Package-II includes 1.5 GW / 6 GW hours in Gujarat.
For Package I, SECI is inviting bids for each project having a minimum capacity of 50 MW/200 MWh and a maximum capacity of 625 MW/2,500 MWh. For Package II, there is a minimum capacity for each project of 50 MW/200 MWh, while the total maximum capacity allotted to a bidder shall not exceed 375 MW/1,500 MWh.
The Buying Entity will dispatch BESS during any four hours’ window starting from the start of non-solar hours in the evening of one day to the end of non-solar hours in the morning of the subsequent day. The non-solar hours would be determined as per GRID-INDIA’s definition applicable to the state where the project will be located.
