G R Infraprojects,  Enviro Infra Engineers, Solarworld Energy Solutions, NTPC GE Power Services, Pace Digitek, and Enrich Energy have won NTPC’s auction to set up 2,334 MWh of battery energy storage systems (BESS) at its thermal power stations across Karnataka, Maharashtra, Bihar, Andhra Pradesh, and Telangana.

The tender was issued on September 30, 2025.

G R Infraprojects secured 400 MWh capacity for the Mouda thermal station in Maharashtra. Enviro Infra Engineers secured 480 MWh and 100 MWh for the Kudgi and Ramagundam thermal stations in Karnataka and Telangana, respectively. Solarworld Energy Solutions secured 264 MWh for the Solapur thermal station in Maharashtra.

NTPC GE Power Services secured 400 MWh for the Barh thermal station in Bihar. Pace Digitek and Enrich Energy secured 400 MWh and 290 MWh for the Nabinagar and Simhadri thermal stations in Bihar and Andhra Pradesh, respectively.

In addition to installing the energy storage systems, the selected bidders must interconnect them with the thermal power facilities. They must also provide operation and maintenance services for 11 years.

The BESS projects will include battery systems, battery management systems, energy management systems, supervisory control and data acquisition systems, power conversion systems, and inverter-duty transformers.

The energy storage projects will also include 33 kV pooling switchgears, protection systems, communication systems, high and low-tension systems, auxiliary power systems, fire-fighting provisions, remote control and monitoring, and other associated materials and accessories.

NTPC Renewable Energy (NREL) invited bids for an engineering, procurement, and construction (EPC) package for a 100 MWh vanadium redox flow battery energy storage system (BESS) at Khavda Solar Park in Gujarat.

NREL issued an EPC tender for a grid-connected 250 MW/1,000 MWh BESS at its Bikaner Solar project in Rajasthan.

Earlier this year, NREL invited bids for the engineering, procurement, and construction of a 250 MW solar project with a 50 MW/200 MWh battery energy storage system in Sitapur, Uttar Pradesh.