JSW Energy has won the Solar Energy Corporation of India’s (SECI) auction to set up a 125 MW/500 MWh standalone battery energy storage system (BESS) in Kerala.

JSW quoted a tariff of ₹441,000 (~$5,057)/MW/month.

The tender was floated in December last year.

JSW Energy will be eligible for viability gap funding of ₹2.7 million (~$30,963)/MWh or 30% of the project’s capital cost, whichever is lower.

The project will be connected to the Mylatti 220 kV substation in Kasaragod. One bay of 110 kV is available. JSW can extend an additional bay if required.

JSW Energy must ensure the BESS is available for at least one operational cycle per day, maintain a minimum monthly system availability of 95%, and guarantee an AC-to-AC roundtrip efficiency of 85% monthly.

It must also ensure the BESS is available for two operational cycles daily, maintain a minimum monthly system availability of 95%, and guarantee an AC-to-AC roundtrip efficiency of 85% monthly.

Kerala State Electricity Board may utilize the BESS up to two operational cycles per day, subject to a maximum of 40 operational cycles in a calendar month and a maximum of 400 operational cycles in a year.

JSW Energy must employ commercially established and operational technologies compliant with the guidelines specified in codes and standards to minimize technology risks.

SECI will accept part commissioning without any imposition of liquidated damages if the first phase of commissioning includes at least 50% of the project’s MWh capacity. The project can be commissioned in three phases, with an initial phase covering 50% of the MWh capacity and up to two additional phases thereafter.

The project must be commissioned within 15 months of signing the battery energy storage purchase agreement. It must achieve financial closure within nine months of signing the battery energy storage purchase agreement.

In January, NHPC issued a tender to develop 125 MW/500 MWh BESS connected to the intrastate transmission system in Kerala (Tranche I).