The government has introduced the Pradhan Mantri Surya Sarovar Yojana to develop 5,000 MW of floating solar capacity. The initiative aims to reduce dependence on land-intensive projects by using water bodies, supported by 10,000 MWh of integrated battery storage to ensure grid stability.
The Ministry of New and Renewable Energy has launched the Pradhan Mantri Surya Sarovar Yojana, a strategic initiative aimed at scaling up floating solar photovoltaic projects across India. With a total budget of ₹5,070 crore, the scheme targets the deployment of 5,000 MW of floating solar capacity by the fiscal year 2030-31. This shift is designed to bypass the land acquisition challenges that often delay large-scale ground-mounted solar projects, by repurposing the surfaces of reservoirs and inland water bodies for power generation.
The initiative addresses a critical gap in India's renewable energy strategy. While the National Institute of Solar Energy estimates a theoretical potential of 102.18 GWp for floating solar based on 20% of available reservoir surface area, current operational capacity remains limited at approximately 700 MW. By incentivizing the development of these sites, the government intends to utilize existing water resources to support the national goal of increasing non-fossil fuel capacity.
Financial incentives are a central pillar of the new scheme. Developers participating in the program can receive Central Financial Assistance of ₹1 crore per MW upon successful commissioning of projects. Additionally, the scheme provides up to ₹50 lakh per project to cover the costs of feasibility, hydrographic, and environmental assessments. These funds are intended to lower the entry barriers for developers facing the unique technical and financial requirements of aquatic solar installations.
From a financial and operational perspective, investors and developers should note the higher capital requirements associated with this technology. Floating solar installations typically entail a 25% cost premium compared to traditional ground-mounted systems. This is due to the need for specialized buoyant structures, sophisticated anchoring mechanisms, and enhanced waterproofing. To manage these costs, the scheme mandates that projects be co-located with battery energy storage systems, requiring a combined capacity of 10,000 MWh. While this integration is necessary for stabilizing the grid against the variable nature of solar power, it also adds to the total project expenditure.
Risks for project developers include the technical complexity of reservoir engineering and the long-term maintenance of structures exposed to aquatic environments. Changes in water levels, humidity, and the potential for corrosion can impact operational efficiency and lifespan. Additionally, the viability of these projects will depend heavily on the ability to secure appropriate water bodies without disrupting local ecosystems or conflicting with other water usage rights. Moving forward, stakeholders will closely track the issuance of tenders under this scheme and the ability of companies to manage the higher capital expenditure while maintaining acceptable return ratios.