ACME Solar, Patel Infrastructure Win NHPC’s 1,000 MWh BESS Auction in Andhra Pradesh
NHPC’s auction for setting up 500 MW/1,000 MWh InSTS-connected standalone BESS in Andhra Pradesh has attracted an L1 tariff of INR 2.08 lakh/MW/month. Patel Infrastructure (450 MWh) and ACME Solar (550 MWh) emerged as winners.
June 26, 2025. By Mrinmoy Dey
Patel Infrastructure emerged as the L1 bidder and secured 225 MW/450 MWh capacity of BESS to be connected at the Jammalamadugu substation.
ACME Solar has won a total capacity of 275 MW/550 MWh at two substations. While the company has secured 225 MW/450 MWh at a tariff of INR 2.22 lakh/MW/month for the Ghani substation, it has won 50 MW/100 MWh at a tariff of INR 2.10 lakh/MW/month for the Kuppam substation.
The tender for this was floated in February 2025.
Developers will be eligible to receive viability gap funding (VGF) support of INR 27 lakh/MWh or 30 percent of the project’s capital cost, whichever is lower.
Developers are required to ensure the BESS operates for two full cycles daily, maintains at least 95 percent system availability each month, and achieves a minimum monthly AC-to-AC round-trip efficiency of 85 percent.
They must deploy commercially proven technologies to mitigate technical risks and commission the projects within 18 months of executing the battery energy storage purchase agreement.
According to Rahula Kashyapa, Chief Commercial Officer of ACME Solar Holdings, “We feel privileged for the opportunity to develop NHPC’s standalone Battery Energy Storage System project in Andhra Pradesh. This milestone reflects ACME Solar’s commitment to pioneering innovative clean energy solutions that strengthen India’s grid reliability and accelerate the nation’s renewable energy transition. By deploying advanced storage technology at scale, we are proud to support Andhra Pradesh’s vision for sustainable growth and energy security. We look forward to delivering a project that sets new benchmarks for reliability, efficiency, and positive community impact.”
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