Advait Energy Transitions, Equentia Natural Resources DMCC, and Sun Drops Energia (KP Group) won Gujarat Urja Vikas Nigam’s (GUVNL) auction to set up 335 MW/670 MWh of standalone battery energy storage systems (BESS) in Gujarat (Phase VIII).

Advait Energy Transitions won 150 MW/300 MWh at a tariff of ₹210,000 (~$2,319.67)/MW/month, and Equentia Natural Resources won 65 MW/130 MWh at a tariff of ₹211,999 (~2,341.75)/MW/month.

Sun Drops Energia secured 120 MW/240 MWh under the bucket-filling method, at a tariff of ₹212,000 (~$2,341.77)/MW/month.

The tender was floated in December 2025.

The scope of work includes the design, financing, supply, installation, testing, commissioning, operation, and maintenance of the BESS.

It also entails ensuring the BESS is available to GUVNL for charging/discharging on a demand basis. The BESS must be designed for 2 cycles of charging and discharging.

The BESS will be charged by drawing power from Gujarat Energy Transmission Corporation (GETCO) and injecting it into the GETCO network, as per instructions from the state load dispatch center.

Projects must be located at or near GETCO’s intrastate transmission system substations.

The successful bidders must identify and arrange land for the project. Interconnection is required at a minimum voltage of 66 kV, as stipulated by GETCO.

The projects will receive viability gap funding (VGF) of ₹1.8 million (~$21,687)/MWh of awarded capacity, under the Power System Development Fund.

Winners will sign a battery energy storage purchase agreement (BESPA) for 12 years from full commissioning. The projects must be commissioned within 18 months from the BESPA’s effective date.

Projects must use a minimum local content requirement of 20% of the total project cost.

The BESS must guarantee a minimum system availability of 95% annually and an AC-to-AC round-trip efficiency of 85% each month.

The software for the BESS’s energy management system must be developed in India.

Last year, Sun Drops Energia, ENGIE Energy, Mecpower Solutions, Samavist Energy Solutions, Stockwell Solar Services, Solar 91 Cleantech, Viviana Power Tech, Rajesh Power Services, and Ultimate Flexipack won GUVNL’s auction to develop 2,000 MW/4,000 MWh of standalone BESS across Gujarat (Phase VII).