Gujarat Urja Vikas Nigam Ltd (GUVNL) has issued a tender for standalone Battery Energy Storage System (BESS) projects targeting a storage capacity of 4,000 MWh (1,000 MW × 4 hours) connected to the state grid.
GUVNL aims to obtain the storage capacity to fulfill the requirements of state distribution companies during peak and off-peak periods.
Selected Battery Energy Storage System Developers (BESSD) will set up the projects on a build-own-operate (BOO) model and sign Battery Energy Storage Purchase Agreements (BESPAs) with GUVNL.
Under the agreement, GUVNL will schedule up to two full charge-discharge cycles daily, subjected to 480 cycles per contract year.
Electricity will be delivered by GUVNL from the Gujarat Energy Transmission Corporation (GETCO) network provided minimum efficiency standards are met. The batteries will then discharge power back into the grid as per the dispatch instructions issued by the State Load Dispatch Centre (SLDC), in consultation with GUVNL.
An e-bidding process will be used to select 4,000 MWh BESS projects after an e-reverse auction with a minimum bid size of 260 MWh (65 MW/260 MWh for a 4-hour system).
Additionally, the BESS must be developed to charge and discharge at a C-rate of 0.25. The location can be anywhere in Gujarat that is connected with the Intra State Transmission System (In-STS). The BESS developers are also required to ensure a minimum system availability of 95 percent on annual basis.
