NVVN increases battery storage tender size to 500 MW/1,000 MWh

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NTPC Vidyut Vyapar Nigam (NVVN) Ltd has revised its tender for setting up 500 MWh (250 MW x 2 hours) of interstate transmission system (ISTS) connected standalone battery energy storage system (BESS).  Proposals for now invited for setting up 1,000 MWh (500 MW x 2 hours) of standalone BESS with double cycles charging/discharging operation of BESS. The total 1,000 MWh BESS capacity will be distributed and connected at 220 kV to two identified ISTS Substations with maximum capacity up to 250 MW/500 MWh at each substation.

NVVN seeks to utilize the energy storage systems, on an “on-demand” basis, suited to the requirements during the peak and off-peak hours.

Selection of BESS projects will be carried out through e-bidding followed by e-reverse auction process. The minimum bid size will be 100 MWh, i.e., 50 MW x 2 hours. The cumulative project capacity to be allocated to a bidder is 250 MW/500 MWh.

NVVN will enter into a battery energy storage purchase agreement (BESPA) with the successful bidders, to avail the energy storage facility for sale in the power exchange or bilateral sale to discoms/C&I sector or in ancillary services.

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