According to the multiple pieces of evidence provided, the largest battery energy storage system (BESS) project in India is the 1000MWh project in Rajasthan awarded by Sterling & Wilson. The project is expected to be completed in 2025 and will be the largest BESS project in India.
In turn, the scale of the projects mentioned above, such as the project by Tata Power in cooperation with Sungrow and SECI, which launched an independent energy storage tender, is larger compared with the previously mentioned project but less than 1000MWh.
Therefore, according to the information mentioned above, the largest BESS project in India is the 1000MWh project in Rajasthan given by Sterling & Wilson.