Daily News Wrap-Up: SECI Announces Winners of 2 GW Rooftop Solar Auction
Five solar companies win NVVN’s 500 MW/1,000 MWh standalone BESS auction
June 24, 2025
Follow Mercom India on WhatsApp for exclusive updates on clean energy news and insights
Vyomaa Energy and Sunanda Solar Energy won Solar Energy Corporation of India’s (SECI) auction to install 2,112 kW of grid-connected rooftop solar systems under the renewable energy service company mode. Vyomaa will install 335 kW at a tariff of ₹4.47 (~$0.051)/kW at the International Centre for Genetic Engineering and Biotechnology, Delhi, and 1,200 kW at a tariff of ₹4.19 (~$0.048)/kW at the National Institute of Technology, Calicut. Sunanda will install 177 kW at a tariff of ₹4.43 (~$0.051)/kW at the National Sanskrit University, Tirupati, and 400 kW at a tariff of ₹3.62 (~$0.041)/kW at the National Institute of Technology, Raipur.
Solar91 Cleantech, Rays Power Experts, Stockwell Solar Services, Oriana Power, and Inox Renewable Solutions won NTPC Vidyut Vyapar Nigam’s (NVVN) auction to set up 500 MW/1,000 MWh standalone battery energy storage systems (BESS) in Rajasthan. Solar91 won 50 MW at a tariff of ₹216,000 (~$2,490.20)/MW/month. Rays quoted a tariff of ₹218,700 (~$2,521.33) to secure 50 MW. Stockwell quoted ₹218,998 (~$2,524.76) and won 225 MW. Orinana secured 125 MW at ₹218,999 (~$2,524.78). Inox won 50 MW of the quoted capacity of 125 MW at a tariff of ₹219,000 (~$2,524.79).
The Central Electricity Authority issued draft guidelines relating to the safety and electric supply of BESS. According to the new guidelines, the chargers used for battery energy storage systems must be specifically designed to match the battery chemistry. The battery system must be built with two-fault tolerance, ensuring it can either continue safe operation or shut down safely even after two separate faults occur.
The Maharashtra Electricity Regulatory Commission directed the Maharashtra State Electricity Distribution Company to refund excess wheeling and transmission charges collected from a wind power project between August 2018 and May 2023. The refund, totaling ₹14.2 million (~$165,272), must be paid along with applicable interest within one month.
Rajasthan Rajya Vidyut Utpadan Nigam (RVUNL) issued a request for selection to set up 1,000 MW/2,000 MWh standalone BESS at six locations in the state. The projects will receive viability gap funding support from the Ministry of Power. Apart from setting up the BESS, the scope of work entails making the storage facility available to RVUNL for its on-demand charging and discharging. The BESS’ charging and discharging schedule will be under the scope of RVUNL or the Rajasthan Urja Vikas and IT Services.
SECI invited bids for the supply of 724,000 metric tons of green ammonia annually to 13 fertilizer plants under the Strategic Interventions for Green Hydrogen Transition program (Mode-2A-Tranche-I). The green ammonia producer must establish production facilities to supply green ammonia to SECI and be fully responsible for securing all required approvals and permits, including those for land, and must ensure production, storage, and delivery to the delivery point.
Solar module manufacturer Waaree Energies announced a strategic realignment of certain components of its integrated 6 GW module, cell, ingot, and wafer manufacturing facility, citing execution delays. It, however, clarified that the company is not shelving its solar manufacturing project in Odisha. The new locations include facilities for 3 GW modules at Samakhiali, Gujarat; 3 GW modules in Gujarat, Tamil Nadu, or any other location; 6 GW cells at Unn, Gujarat; and 6 GW ingots and wafers at Nagpur, Maharashtra.
Electric vehicle charging software platform Kazam raised $6.2 million in a Series B funding round from the International Finance Corporation and existing investors Vertex Ventures SEA and India and Avaana Capital Advisors. The newly raised funds will be used to support the company’s expansion across markets with its energy transition tools.
The United States Senate Committee on Finance released a draft legislative text for its version of the budget reconciliation bill, which includes a provision to phase out the clean electricity production tax credit and the investment tax credit starting in 2026. These credits currently support zero-emission electricity generation by rewarding either the facility’s output or the capital invested in its construction. Under existing law, both were set to phase out starting in 2032 or once electricity-related emissions fell to 25% of 2022 levels, whichever came later. The new provisions advance this timeline, particularly for wind and solar projects.