NTPC Vidyut Vyapar Nigam (NVVN) has announced the auction results for 500 MW/1,000 MWh of standalone battery energy storage systems (BESS) to be developed in Rajasthan. A total capacity of 500 MW has been awarded across five developers. Solar91 Cleantech secured 50 MW/100 MWh at a tariff of Rs 216,000 per MW per month. Rays Power Experts won 50 MW/100 MWh at a tariff of Rs 218,700 per MW per month. Stockwell Solar Services secured 225 MW/450 MWh at a tariff of Rs 218,998 per MW per month. Oriana Power won 125 MW/250 MWh at a tariff of Rs 218,999 per MW per month. Inox Renewable Solutions secured 50 MW/100 MWh of the 125 MW/250 MWh it had quoted, at a tariff of Rs 219,000 per MW per month.
The tender was floated in February 2025. The auction has reportedly recorded the lowest BESS tariff in India, with the previous low being Rs 219,001 per MW per month. Developers will receive viability gap funding of Rs 2.7 million per MWh or 30 per cent of the awarded project’s capital cost, whichever is lower.
The project’s scope of work involves setting up the BESS and its interconnection with the state transmission utility network. The successful bidders must make the BESS available to NVVN for charging or discharging on an “on-demand” basis. Additionally, they are required to construct the substation bay and obtain all necessary permits and clearances, including for the dedicated transmission system up to the delivery point.
