TERI Issues Major Tender For 43 MW/86 MWh BESS Project To Strengthen Delhi’s Power Network

The Energy and Resources Institute (TERI) has issued a detailed Request for Proposal on behalf of BSES Rajdhani Power Limited to launch a major battery energy storage project in Delhi. This tender aims to add a total capacity of 43 MW with an energy storage capability of 86 MWh, which will be set up at three important grid stations in the capital. These locations include G5 Matiala, G7 Dwarka, and Goyla Khurd, and the selected developer will be responsible for designing, supplying, testing, installing, commissioning, and maintaining the entire system. The tender follows a Tariff-Based Competitive Bidding process, marking a significant step toward strengthening the power distribution network in the city.

The work scope is extensive and covers every stage of the project. It begins with conducting a site survey and preparing detailed engineering work, followed by the complete installation and commissioning of the system. Once the system is operational, the selected developer will also have to handle all aspects of operation and maintenance for the entire duration of the contract. The developer, referred to as the BESSD, will sign a Battery Energy Storage Service Agreement with BSES Rajdhani Power Limited. The duration of this agreement will extend up to 12 years after the commercial operation date of the system. The battery system will play an important role in providing flexible operational support to the utility. It will allow charging and discharging whenever needed to support activities like energy arbitrage, peak saving, and reactive power support. The system has also been planned with the capability to supply power to critical loads during blackouts. Moreover, once registered with the national or regional load dispatch center, it will be able to offer ancillary services as required.

The tender process has a strict timeline, beginning with the issue date on December 9, 2025. Interested bidders were allowed to submit their questions by December 15, 2025. A site visit was scheduled for December 11 in case bidders needed to inspect the locations, followed by a pre-bid meeting on December 12. Responses to all queries raised by the bidders will be released on December 18. The deadline for submission of technical and financial bids has been fixed for December 30 at 5 p.m. After submission, the technical bids will be opened on January 1, 2026. The list of shortlisted bidders is planned to be announced on January 6, and the financial bids of the technically qualified bidders will be opened on January 7. Following this, an e-Reverse Auction will be held on January 9. The final bidder selection and signing of the agreement is expected to take place on January 13, 2026.

The eligibility terms require that the bidder be a company registered under the Companies Act. The financial requirement is strict, and each bidder must have a minimum net worth of at least thirty-five crore rupees. From a technical standpoint, the bidder should have completed or be in the process of completing at least 4 MWh of grid-connected battery storage in the past five years. They must also submit an Earnest Money Deposit in the form of one bank guarantee for the full project capacity. If selected, the bidder must provide two performance bank guarantees, each equal to five percent of the capital cost. The winning bidder must also set up a Special Purpose Vehicle before signing the final agreement.