NTPC Green Energy (NGEL) has invited bids to develop 7,800 MWh of battery energy storage systems at NTPC Renewables’ (NTPC REL) solar project in Bikaner.

The scope of work includes design, engineering, supply, packing, transportation, unloading, storage, installation, and commissioning of the grid-connected battery energy storage systems on a turnkey basis.

Successful bidders will also take care of the complete manufacturing, including conducting all routine and acceptance tests, preassembly, testing, pre-commissioning, and commissioning, and putting all equipment into satisfactory operation, including successful completion of initial operation.

The successful bidder will also be responsible for the project’s operation and maintenance for 15 years.

The last date to submit bids is 25 June, 2026. Bids will be opened on the same day.

The project is divided into five blocks:

• Block 1 consists of 500 MW /2000 MWh at the pooling substation (PSS)-1
• Block 2 consists of  550 MW /2200 MWh at PSS-2
• Blocks 3, 4, and 5 consist of 300 MW /1200 MWh each at PSS-3

Each battery storage system block will be connected at the 33 kV Level of the designated solar projects.

The design life of the BESS system, including that of the battery, must be 25 years (with degraded capacity as per the bidder’s proposal, considering daily single-cycle operation) from the date of commissioning.

Batteries offered should be rated for at least 10,000 cycles of operation.

Bidders should guarantee a minimum 92 % of dispatchable capacity across all 15 years, starting with 100 % of rated dispatchable capacity and 95 % for the first year. The dispatchable capacity at the time of handover shall be a minimum 92%.

Bidders should ensure that the minimum nameplate-rated installed capacity for each BESS block is at least 110% of the MWh capacity listed under the BESS capacity for that block.

The minimum monthly Round Trip Efficiency should be 80%, including auxiliary consumption (Measured at the Termination Point/Point of Coupling), and the annual availability is to be maintained at 98%.

This January, NGEL issued a tender to supply 2.38 MW of solar modules for its projects in Uttar Pradesh and Rajasthan. The procurement involves the supply of 7,000 crystalline silicon solar PV modules, each with a rated capacity of 340 Wp.

Last December, NGEL issued a tender for comprehensive operation and maintenance services for its 540 MW grid-connected solar projects in Nokhra and Devikot, Rajasthan, for three years.

Subscribe to Mercom’s India Solar Tender Tracker for timely updates on all solar tenders issued by various agencies in India.