NTPC Renewable Energy Limited (NTPC REL), a subsidiary of NTPC Limited, has invited bids for the development of a large-scale Battery Energy Storage System (BESS) project at its Nokhra Solar Plant in Rajasthan. The company has issued an Invitation for Bids (IFB) for the engineering, procurement, and construction (EPC) of a 300 MW/1200 MWh Inter-State Transmission System (ISTS)-connected battery storage facility.
The tender will be conducted through a competitive domestic bidding process. The selection process will follow a Single Stage Two Envelope method, followed by a reverse auction to finalize the successful bidder.
The project is planned as a turnkey development, requiring the selected contractor to undertake the complete design, manufacturing, supply, testing, installation, and commissioning of the battery energy storage system. The scope of work also includes integration of the storage facility with the associated Balance of System (BoS) infrastructure at the solar plant.
According to the tender conditions, the BESS must be designed for a service life of 25 years. The batteries used in the project are required to support a minimum lifecycle of 10,000 operational cycles. In addition to project execution, the successful bidder will be responsible for comprehensive operation and maintenance services for a period of 15 years. This long-term commitment includes maintaining system performance standards, carrying out scheduled maintenance activities, and ensuring compliance with performance guarantees.
The bidding schedule outlines several important milestones. The invitation was officially published on June 15, 2026. Interested bidders can access and download the tender documents from June 16, 2026, until June 29, 2026. A pre-bid conference is scheduled for June 30, 2026, providing an opportunity for prospective bidders to seek clarifications and raise technical or commercial queries.
The deadline for submission of techno-commercial and price bids has been set for July 9, 2026, at 3:00 PM IST. The techno-commercial bids will be opened on the same day at 3:30 PM IST.
To participate in the bidding process, applicants must submit an Earnest Money Deposit (EMD) or Bid Security of INR 20 crore. Bids submitted without the required security deposit will be rejected. The tender also specifies financial eligibility criteria, including a minimum average annual turnover of INR 1,980 million during the last three financial years and a net worth equal to at least 100 percent of the company’s paid-up share capital.
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