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Coal India Secures 750 MWh BESS Project in Telangana from TGGENCO

Coal India has secured a 187.5 MW/750 MWh BESS project from Telangana Power Generation Corporation at a tariff of INR 3.14 lakh/MW/month. The BESS plant will be set at the Choutuppal substation in Telangana.

March 31, 2026. By Mrinmoy Dey

Coal India has announced that the company has received a letter of award (LOA) from Telangana Power Generation Corporation (TGGENCO) for developing a 750 MWh (187.5 MW for 4 hours) battery energy storage system (BESS) Plant at Choutuppal, Telangana.

The company secured the capacity at a tariff of INR 3.14 lakh/MW/Month, and the estimated cost of the project is INR 1057.09 crore, the company stated in a regulatory filing, further adding that the project must be completed within 18 months from the signing of the battery energy storage purchase agreement (BESPA).

The tender for this was floated in November 2025.

The projects will be set up under a build, own, operate (BOO) model with 15 years' tenure. The project will be eligible for viability gap funding (VGF) support at INR 18 lakh/MWh.

The BESSD shall be required to set up a BESS, with the primary objective of making the energy storage facility available to TGDISCOMS for charging/discharging of the BESS, on an 'on demand' basis.

Setting up of the BESS and interconnection of the BESS with the State Transmission Utility (STU) network, and entire operation and maintenance, including safety of the equipment/personnel, will be under the scope of the BESSD.

Scheduling of charging and discharging of the system will be under the scope of SLDC/DISCOMS. The State DISCOMS will provide the required power for charging the BESS.

The land shall be provided through a right-of-use basis by TGTRANSCO/TGGENCO to the developer, at an annual lease charge of INR 1 per acre per year.

The bidder must ensure that the BESS can charge and discharge with a C-rate of 0.25. Additionally, the BESS must be capable of being charged or discharged in blocks of either 60 MW/240 MWh or 67.5 MW/270 MWh up to the total rated capacity specified at each location/project.

The BESSD must make the BESS available for one operational cycle per day, i.e. one complete charge-discharge cycle (4 Hrs) per day. The BESSD must guarantee a minimum annual average system availability of 95 percent on an annual basis.

BESSD must ensure that refurbished battery cells are not used in the project, and the application software of the Energy Management System (EMS) of the BESS must be developed indigenously within India.

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Energy Storage

Coal India

Telangana Power Generation Corporation

TGGENCO BESS Auction

Standalone BESS auction

BESS projects in Telangana