The Tamil Nadu Electricity Regulatory Commission (TNERC) has approved Tamil Nadu Green Energy Corporation Ltd. (TNGECL)’s plan to procure 1,000 MWh of battery energy storage systems (BESS), marking one of India’s largest state-led storage deployments. The decision, issued on December 4, 2025, authorizes long-term procurement under a 12-year build–own–operate framework, supported by the Union Government’s Viability Gap Funding (VGF) program. Project Overview Capacity: 500 MW across two...

Uttarakhand’s amendment formally brings Battery Energy Storage Systems (BESS) into renewable tariff rules, setting useful life at 12 years, a net BESS tariff of ₹5.78/kWh, and new commissioning, depreciation, and metering norms—effective from 27 November 2025. The Uttarakhand Electricity Regulatory Commission (UERC) issued the second amendment to its renewable tariff regulations to explicitly include BESS alongside solar and small hydro, renaming the principal regulation and extending its...

The Central Electricity Regulatory Commission (CERC) has released the Draft Terms and Conditions of Tariff (Second Amendment), 2025 , marking a significant evolution in India’s transmission tariff framework. Building on the 2019 regulations and the 2023 first amendment, the new draft introduces provisions that mainstream energy storage systems (ESS) into tariff determination, particularly when linked to thermal Inter-State Transmission Systems (ISTS). Earlier regulations had focused on...