India's Battery Energy Storage System (BESS) demand is expected to reach 236.2 GWh during the fiscal years 2027 to 2032, according to a report by Equirus. This surge is attributed to falling battery costs and improved revenue visibility from Firm and Dispatchable Renewable Energy (FDRE), Round-the-Clock (RTC) power, and ancillary services.
Key Drivers of BESS Demand
The Equirus report states, "Declining battery costs and greater revenue visibility from FDRE, RTC and ancillary services have enhanced commercial viability." The growth of AI and cloud data centres is emerging as a significant demand driver, as these facilities require uninterrupted clean power. The report notes, "Each 100 MW data centre needs 250 MW Solar + 150MW wind + 450 MWh BESS to run 24x7 on renewables." It adds, "BESS enables time-shifting, not generation -- needs extra solar input."
Solar Project Pipeline and Challenges
India's solar project pipeline remains robust, with stable execution and demand expected in the coming years. However, the standalone solar segment faces a supply overhang, with approximately 58 GW of unsigned solar power purchase agreements (PPAs). Most of these are plain-vanilla projects that DISCOMs are reluctant to contract due to lower tariff attractiveness and weak offtake visibility, making financial closure difficult.
Shift Towards Firm Dispatchable Renewable Energy
DISCOMs are increasingly preferring firm and dispatchable renewable power, including battery-backed solar (BESS), FDRE, and RTC projects that can supply electricity beyond solar generation hours. The report says, "Government tenders, storage obligations and SECI/NTPC-led procurement programs have accelerated utility-scale BESS adoption."
Government Initiatives and Future Outlook
The government is considering incentives for floating solar projects to ensure more even distribution of renewable energy capacity across the country. Citing NITI Aayog, the report says India may require around 1,800 GW of renewable energy capacity by 2050, along with nearly 2,000 GWh of BESS.
