Tamil Nadu Green Energy Corporation Limited (TNGECL) has announced the results of its viability gap funding tender to set up seven standalone battery energy storage systems (BESS) with a total capacity of 375 MW/1,500 MWh. Only 350 MW/1,400 MWh was auctioned out of the total capacity. Eagle Construction secured 175 MW/700 MWh at an amount of Rs 315,000 per MW per month. Furthermore, the remaining capacity of 175 MW/700 MWh was secured by OPG Power at an amount of Rs 316,000 per MW per month.
According to the tender guidelines, the scope of work covers ensuring the timely availability of BESS to Tamil Nadu Power Distribution Corporation Limited (TNPDCL) for on-demand charging and discharging. The projects will be charged by drawing electricity from the Tamil Nadu Transmission Corporation or TNPDCL and will supply power back to their network as per the instructions of the state load despatch centre. Furthermore, the BESSs are required to be interconnected with the state transmission utility’s network. The tender was floated earlier in November 2025.
Earlier in December 2025, TNGECL floated a tender for the development of 20 MW grid-connected rooftop solar systems on government buildings across the state.
