India, July 8 -- India will need 888 gigawatt-hours (GWh) of energy storage capacity by 2035-36, up from barely 1 GWh today, underscoring the scale of investment required to support the country's renewable energy transition, according to a new report.

The report India BESS Market Review, released by the India Energy Storage Alliance (IESA) and Customised Energy Solutions (CES) at India Energy Storage Week (IESW) 2026, projects a cumulative energy storage system (ESS) capacity of 888 GWh by 2035-36, comprising 321 GWh of battery energy storage systems (BESS) and 567 GWh of pumped storage projects (PSP). Annual ESS additions are expected to accelerate from 50.2 GWh in 2026 to 138 GWh by 2036, reflecting the rapid expansion required to inte...