NTPC Renewable Energy Ltd (NTPC REL) has launched a tender inviting bids for the engineering, procurement and construction (EPC) packages for 1,090 MW/4,360 MWh of interstate transmission system (ISTS)-connected battery energy storage systems (BESS) across its three solar project sites in Rajasthan.
The tenders cover a 240 MW/960 MWh BESS at the Devikot solar plant, a 550 MW/2,200 MWh BESS at the Shimboo Ka Burj solar plant, and a 300 MW/1,200 MWh BESS at the Nokhra solar plant. All three projects are based on four-hour storage duration.
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.
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