ABCI Infrastructures has won Calcutta Electric Supply Corporation’s (CESC) auction to set up a 40 MW/80 MWh standalone battery energy storage system at the New Cossipore generating station in Kolkata, West Bengal.

ABCI Infrastructures has won the project at a tariff of ₹326,000 (~$3,488.33)/MW/month and has signed a 12-year power purchase agreement.

The tender was floated in July 2025.

The project entails the site survey, planning, designing, engineering, supply, storage, installation, integration, testing, and commissioning of the battery energy storage system.

ABCI will also be responsible for the operation and maintenance of the project for 12 years.

The battery energy storage system must be designed for interconnection at CESC’s 33 kV switchboard at the New Cossipore substation.

The BESS must be designed for two cycles daily. It must also have a round-trip efficiency of 90% and ensure system availability of over 95%.

ABCI Infrastructures will set up the project on a build-own-operate-transfer model.

The project must use commercially established, operational technologies to minimize technology risk and achieve timely commissioning. It must be commissioned within 18 months of the effective date of the battery energy storage purchase agreement.

CESC will utilize a battery storage system on an on-demand basis to meet its peak and off-peak demand, and will provide power for the system’s charging and discharging.

ABCI Infrastructures must take a separate metered connection to meet the auxiliary power load of the battery storage systems.

CESC will provide the land for the battery storage project for 12 years, and after that period, the project will be transferred to CESC for ₹1 (~$0.0107).

In 2025, various agencies in India floated tenders to develop projects with 17 GW/48 GWh of standalone battery storage systems.

According to the 2H & Annual 2025 India’s Energy Storage Landscape Report by Mercom India Research, India added nearly 547 MWh of battery energy storage capacity in 2025, a 26% year-over-year increase from over 433 MWh.