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India tenders 1.2 GWh battery storage project linked to solar plant

NTPC Renewable Energy has launched an EPC tender for a 300 MW/1,200 MWh battery energy storage system connected to interstate transmission infrastructure at its Nokhra solar project, with the selected contractor to provide 15 years of operations and maintenance.

By

Uma Gupta

Jun 18, 2026

TPC Renewable Energy Ltd (NTPC REL) has started accepting online bids for the engineering, procurement, and construction (EPC) of a 300 MW/1,200 MWh battery energy storage system (BESS) connected to the interstate transmission system (ISTS) at its Nokhra solar plant in Rajasthan.

NTPC REL said the quoted BESS capacity must represent the rated AC discharge capacity at the point of injection (POI) at the ISTS substation.

The selected EPC contractor will be responsible for design, engineering, supply, installation, testing, and commissioning of the grid-connected battery storage system on a turnkey basis.

The scope of work also includes comprehensive operation and maintenance (O&M), including performance insurance, warranty coverage, and an annual maintenance contract under a service-level agreement for a period of 15 years.

According to the tender specifications, the BESS must have a design life of 25 years from the date of commissioning, with capacity degradation as per the bidder’s proposal considering daily single-cycle operation.

Batteries must be rated for minimum 10,000 cycles of operation.

The bidder must guarantee minimum 98% of dispatchable capacity at POI across all 15 years starting with 100% of rated dispatchable capacity for the first year.

From pv magazine India

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