India's Reservoirs Could Host 102 GW of Floating Solar, First National Assessment Finds
India's National Institute of Solar Energy (NISE) has released the country's first comprehensive assessment of floating solar capacity, estimating that inland reservoirs and lakes could host approximately 102 gigawatts of solar power. The report, launched by the Ministry of New and Renewable Energy, identifies 682 technically feasible water bodies across 1,946 square kilometres, with Maharashtra, Madhya Pradesh/Andhra Pradesh, Karnataka, Odisha, and Telangana holding the greatest potential. The findings are significant as floating solar sidesteps India's chronic land acquisition bottlenecks while the country pursues a 500 GW non-fossil energy target by 2030.
The National Institute of Solar Energy (NISE), an autonomous body under India's Ministry of New and Renewable Energy (MNRE), has published a 121-page report titled 'Solar PV Potential of India: Floating Solar,' marking the first national-level assessment of the technology. Using six geospatial filters — including minimum reservoir size, water permanence, depth, solar irradiance, and proximity to roads and substations — NISE screened 11,197 water bodies and identified 682 as technically feasible, covering 1,946 square kilometres and yielding an estimated 102.18 GW of capacity with a self-imposed cap of 20% of any reservoir's surface. MNRE Minister Pralhad Joshi announced that the government would soon release a dedicated policy and deployment timeline for floating solar, while Secretary Santosh Kumar Sarangi noted ongoing discussions with the Finance Ministry on promotional schemes. The report adds floating solar's 102 GW to NISE's previously estimated 3,343 GW of land-based solar potential, bringing India's total assessed solar potential to approximately 3,445 GW. India currently has around 158 GW of installed solar capacity, of which only about 600 MW is floating solar. The report does not include cost estimates for realising the full potential, citing only a 2021 U.S. benchmark noting floating plants cost roughly 25% more upfront than ground-mounted systems. Field observations at India's largest floating solar installation, the 278 MW Omkareshwar park in Madhya Pradesh, revealed operational issues including loosening float joints, misaligned platforms, and cable failures.
Limitations & open questions
The report itself contains no cost estimates for developing the identified 102 GW potential in the Indian context, and neither source addresses environmental or ecological risks of covering significant reservoir surfaces with solar panels, such as impacts on aquatic ecosystems, water quality, or evaporation rates.
How coverage differed
The Hindu provided more technical depth, including details on geospatial methodology, operational problems observed at the Omkareshwar plant, and global floating solar context, while the Times of India foregrounded ministerial announcements and policy commitments, including the MoU with Military Engineering Services and the small hydro power portal launch.
What different sources said
- The HinduCenter
India’s reservoirs can host 102 GW of floating solar, says first national assessment
- Times of IndiaCenter
India has potential to develop about 102 gigawatt-peak of floating solar energy says govt
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