India has approved a large-scale government scheme to deploy 5 gigawatts of floating solar photovoltaic capacity paired with co-located battery energy storage systems, marking a significant push to expand renewable generation on existing water bodies across the country.

Scheme Details and Financial Backing

The program, formally titled the Pradhan Mantri Surya Sarovar Yojana (PMSSY), carries a budget of approximately INR 5,070 crore — equivalent to roughly US$531.7 million. The initiative targets the construction of floating solar installations on existing reservoirs and industrial ponds, with each project required to include an energy storage system capable of storing a minimum of two hours of output. Given the 5 GW headline capacity, that two-hour minimum translates to at least 10 GWh of total storage across the portfolio.

Timeline and Project Sanctioning

Project sanctions under the scheme are planned to begin in fiscal year 2026–27 and continue through fiscal year 2030–31, providing a five-year window for approvals. Financial disbursements supporting the program are set to extend further, running through fiscal year 2032–33, giving developers and the government additional time to complete construction and fulfill funding commitments once projects are approved.

Significance for India's Renewable Buildout

By focusing deployment on reservoirs and industrial ponds rather than land, the scheme seeks to reduce competition for surface area that would otherwise be needed for ground-mounted solar or agricultural use. Co-locating storage with each floating array addresses one of the persistent challenges facing variable renewable generation — the mismatch between peak sunlight hours and peak electricity demand — by requiring dispatchability to be built into every project from the outset. The mandatory two-hour storage floor establishes a baseline grid-support function for all installations sanctioned under the program.