Overview
The Union Cabinet has approved the PM‑SSY. The scheme will create 5,000 MW of FSPV capacity on reservoirs and other water bodies, with a total outlay of ₹5,070 crore. Central Financial Assistance (CFA) of up to ₹1 crore per MW will be released only after commissioning.
Key Developments
- Each plant must include a minimum two‑hour battery storage system, totalling 10,000 MWh across the programme.
- The SECI will implement the scheme, attracting an estimated ₹28,500 crore of private investment.
- India currently has ~0.7 GW of floating solar, while the technical potential is about 102 GW.
- Ground‑mounted solar costs ₹3.9–4.2 crore per MW; FSPV costs ₹4.9–5.2 crore per MW, about 25 % higher, plus ₹0.9–1.2 crore per MWh for batteries.
- States with the highest potential are Maharashtra (16.28 GWp) and Madhya Pradesh (14.89 GWp).
Important Facts
Floating solar avoids land‑acquisition disputes because only a small strip of land is needed for cabling. Water cooling can raise panel efficiency, while the shade reduces evaporation and algae growth. However, fluctuating water levels can stress mooring lines, and occasional DC‑cable breakage has been reported.
India faces a major curtailment problem: excess solar is often dumped midday due to insufficient storage, forcing thermal plants to stay online. Mandatory battery storage in PM‑SSY aims to shift generation to evening peaks, reducing curtailment.
Globally, floating solar capacity reached ~9.6 GW by 2024, with China leading, followed by India, South Korea and Japan. The World Bank estimates that man‑made reservoirs worldwide could host several terawatts of solar.
Exam Relevance
The scheme touches on multiple GS papers: GS3 – Environment & Ecology (renewable energy, climate commitments, NDC), GS3 – Economy (public‑private investment, CFA, cost‑benefit analysis), and GS4 – Ethics (land‑use conflicts, displacement avoidance). Understanding NDC and the Panchamrit goal (500 GW non‑fossil by 2030, net‑zero by 2070) is essential for answering climate‑policy questions.
Way Forward
States are encouraged to submit feasibility reports within nine months, supported by up‑front CFA of up to ₹50 lakh per site for bathymetry, ecological impact and solar‑yield studies. Adaptive mooring designs will be needed for reservoirs with large water‑level swings. Monitoring mechanisms must address safety concerns such as slippery walkways and cable integrity. Successful implementation will add 5 GW of clean capacity, cut ~10 million tonnes of CO₂ annually, and generate 16,000–17,000 jobs, thereby strengthening India’s climate commitments.