Reliance Power announced today its arm Reliance NU Suntech has received the Letter of Award from Solar Energy Corp. of India (SECI) for its proposed 930 MW solar plus 465 MW/1860 MWh battery energy storage system (BESS) project.

“The project will see the largest deployment of grid storage batteries at a single site, not only in India but also in Asia, outside of China. The competitive tariff with assured supply of peak power for 4 hours in a day will be a welcome relief for DISCOMs that have had to consistently buy power from the power exchanges during peak hours at the cap of INR 10 per unit,” stated the company.

Reliance NU Suntech won the project from SECI in an e-reverse auction held on 9th December 2024. As per the terms of the tender, Reliance NU Suntech will also install a minimum storage capacity of 465 MW/1,860 MWh charged by solar power. The company secured the largest individual allocation out of the five companies vying for a total quoted capacity of 2 GW of interstate transmission system (ISTS) connected solar power projects with 1 GW/4 GWh energy storage systems.

The project will guarantee a peak power supply of four hours daily (or a four-hour discharge duration). SECI will enter into a power purchase agreement (PPA) with Reliance NU Suntech for a period of 25 years and the solar power procured will be sold to multiple discoms in India. Reliance NU Suntech will develop the project on a build-own-operate basis.