en.Wedoany.com Reported - The Energy and Resources Institute (TERI), on behalf of BSES Rajdhani Power Limited (BRPL), has issued a tender for a battery energy storage system (BESS) with a total capacity of 57.5 MW/115 MWh. The project is planned to be developed at four 66/11 kV substations under BRPL, with a storage duration of two hours. The tender deadline is July 27, 2026, and bids can be submitted via www.bharat-electronictender.com.

This BESS project aims to address challenges arising from the integration of renewable energy (RE) into the grid. BRPL invites eligible developers to participate in the bidding process, with the scope of work covering site survey, planning, design, engineering, procurement, transportation and supply, insurance, unloading, handling, installation, integration, testing, commissioning, and operation and maintenance (O&M) of the battery energy storage system.

Previously, AmpereHour Energy and Indigrid, through their joint venture Kirlokari BESS, have already commissioned a battery energy storage system. This project, developed in collaboration with BSES Rajdhani Power Limited (BRPL), is considered one of the first BESS projects in India to receive regulatory approval.

Other BESS projects under development in the Delhi region include four independent utility-scale battery energy storage systems located in the southern and western parts of the city, which will add 55.5 MW/111 MWh of storage capacity. Broader power infrastructure plans also include the development of underground cables in Chandni Chowk and the construction of a 66/11 kV, 63 MVA GIS indoor substation in Mandoli.

This tender covers the construction of a 57.5 MW/115 MWh BESS across four substations, with the specific capacity allocation as follows:

Sagarpur-DESU Colony: 30 MW/60 MWh

Bindapur: 15 MW/30 MWh

Hari Nagar: 7.5 MW/15 MWh

G4: 5 MW/10 MWh

The project will be connected to 66 kV/11 kV substations and will enter into a contract with the power purchaser to provide energy storage services for charging and discharging operations. The scope of work includes site survey, planning, design, engineering, procurement, transportation and supply, insurance, unloading, handling, installation, integration, testing, commissioning, and operation and maintenance of the BESS, in accordance with the tender technical specifications.

The grid-connected BESS must be equipped with necessary systems to monitor and record project performance. The successful bidder is also required to provide 24×7 remote access to the project monitoring portal to the power purchaser, the Ministry of New and Renewable Energy (MNRE), the State Load Dispatch Center (SLDC), the National Load Dispatch Center (NLDC), or any other designated agency.

The tender requires the project to be geo-tagged and to install fire barriers with a fire resistance rating of no less than three hours. The power purchaser will make payments under the monthly bill to the account notified by the BESS developer within 45 days (during working hours) after submission of the monthly bill.

According to the tender conditions, the power purchaser may schedule a maximum of two charge-discharge cycles per day. A charging cycle can be a continuous two-hour charge or multiple charging intervals, provided that the cumulative charging energy does not exceed the rated energy capacity. Similarly, a discharging cycle can be a continuous two-hour discharge or multiple intervals, with the cumulative discharge energy kept within the rated energy capacity.