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Recent Developments:

• The Union Cabinet has approved the Pradhan Mantri Surya Sarovar Yojana (PM-SSY) as a Central Sector Scheme to accelerate the deployment of Floating Solar Photovoltaic (FSPV) projects integrated with Energy Storage Systems (ESS).
• The scheme has a total financial outlay of ₹5,070 crore for implementation from FY 2026-27 to FY 2030-31, with the objective of developing 5,000 MW of floating solar capacity across reservoirs and inland water bodies.
• The initiative seeks to strengthen India's renewable energy capacity, improve energy security, reduce dependence on fossil fuels and support the country's long-term climate commitments.

Pradhan Mantri Surya Sarovar Yojana (PM-SSY):

About, Objectives:

• PM-SSY is a Central Sector Scheme designed to promote large-scale deployment of Floating Solar Photovoltaic (FSPV) projects integrated with Energy Storage Systems (ESS).
• The scheme aims to utilise reservoirs, lakes and other inland water bodies for clean energy generation without competing for agricultural land or human settlements.
• It seeks to diversify India's renewable energy portfolio, enhance grid reliability and promote sustainable utilisation of existing water resources.
• The programme also supports Atmanirbhar Bharat by encouraging domestic manufacturing of critical renewable energy components.

Financial Outlay, Implementation:

• The scheme provides a financial allocation of ₹5,070 crore to establish 5,000 MW of floating solar capacity during FY 2026-27 to FY 2030-31.
• Implementation is based on the assessment of the National Institute of Solar Energy (NISE), which estimates India's floating solar potential at nearly 102.18 GWp, whereas the presently installed capacity is only around 700 MW.
• The scheme focuses on rapid expansion of floating solar projects across suitable reservoirs and inland water bodies with high solar generation potential.

Financial Assistance:

• Developers will receive Central Financial Assistance (CFA) of ₹1 crore per MW after successful commissioning of eligible floating solar projects.
• An additional Central Financial Assistance of up to ₹50 lakh per project will be provided for feasibility studies, including bathymetric surveys, hydrographic assessments and environmental studies.
• Financial support is intended to reduce project risks and improve private sector participation in floating solar development.

Energy Storage Requirement:

• Every project must incorporate co-located Energy Storage Systems (ESS) with a minimum storage duration of 2 hours to improve grid stability.
• The scheme targets the creation of nearly 10,000 MWh of integrated energy storage capacity across all approved projects.
• Battery storage will facilitate renewable energy integration by balancing intermittent solar generation and meeting peak electricity demand.

Floating Solar Photovoltaic (FSPV):

Meaning, Features:

• Floating Solar Photovoltaic (FSPV) refers to solar photovoltaic systems installed on floating platforms over reservoirs, lakes, dams, irrigation tanks and industrial water bodies instead of land.
• Solar panels are mounted on buoyant structures anchored securely to withstand water level variations and weather conditions.
• Floating solar technology enables large-scale renewable energy generation while conserving valuable agricultural and urban land resources.

Advantages:

• Floating solar minimises land acquisition challenges associated with conventional ground-mounted solar projects.
• Water beneath solar panels reduces module temperature through natural cooling, improving energy generation efficiency.
• Floating solar installations reduce water evaporation from reservoirs and may help limit excessive algal growth by partially shading the water surface.
• Existing transmission infrastructure associated with hydropower reservoirs can often be utilised, reducing evacuation costs.

Limitations:

• Floating solar projects generally involve nearly 25% higher capital costs than conventional ground-mounted systems because of floating platforms, anchoring mechanisms and waterproof electrical infrastructure.
• Long-term maintenance requires specialised engineering solutions to address corrosion, water movement and extreme weather conditions.
• Environmental assessments are necessary to minimise potential impacts on aquatic ecosystems, fisheries and reservoir management.

Major Project:

• The Omkareshwar Floating Solar Park on the Narmada River in Madhya Pradesh is India's largest operational floating solar project with an installed capacity of 278 MW, while future expansion is planned up to 600 MW.

Significance of PM-SSY:

Renewable Energy, Energy Security:

• The scheme is expected to increase India's floating solar capacity from nearly 700 MW to around 5,700 MW, significantly strengthening renewable energy generation.
• Increased domestic clean energy production will reduce dependence on imported fossil fuels and enhance long-term energy security.
• Diversification of renewable energy sources will improve resilience against seasonal variations affecting conventional solar installations.

Climate Action, Environmental Benefits:

• The scheme is expected to reduce nearly 10 million tonnes of carbon dioxide (CO₂) emissions annually.
• Greater reliance on renewable electricity supports India's commitments under the Paris Agreement and its objective of achieving Net Zero emissions by 2070.
• Expansion of clean energy contributes towards achieving the national target of 500 GW non-fossil fuel electricity capacity by 2030.

Economic, Industrial Benefits:

• The programme is expected to generate nearly 16,000–17,000 full-time equivalent employment opportunities across manufacturing, construction, engineering and operations.
• Domestic manufacturing of floating structures, photovoltaic modules, batteries and associated equipment will strengthen the renewable energy supply chain.
• Increased private investment is expected to stimulate innovation and industrial development in India's clean energy sector.

Grid Stability, Technological Advancement:

• Integration of Battery Energy Storage Systems (BESS) will improve grid reliability by managing fluctuations associated with renewable energy generation.
• Adoption of advanced digital monitoring, energy management systems and battery technologies will strengthen India's technological capabilities in renewable energy.

Status of Solar Energy in India:

Capacity Expansion:

• India's installed solar power capacity has increased from nearly 3 GW in 2014 to around 129 GW in 2025, making it one of the world's fastest-growing solar energy markets.
• Solar energy forms a major component of India's strategy to achieve 500 GW of non-fossil fuel electricity capacity by 2030.

Major Initiatives:

• PM Surya Ghar: Muft Bijli Yojana promotes rooftop solar adoption by households and has facilitated nearly 24 lakh rooftop installations up to December 2025.
• PM-KUSUM supports installation of solar pumps and decentralised solar power generation for the agricultural sector.
• The Green Energy Corridor programme strengthens transmission infrastructure for efficient evacuation of renewable energy.
• A ₹5,400 crore Viability Gap Funding (VGF) scheme supports development of 30 GWh Battery Energy Storage Systems (BESS) to improve renewable energy integration.
• The Approved List of Models and Manufacturers (ALMM) has strengthened domestic manufacturing capacity, enabling India to achieve nearly 100 GW annual solar photovoltaic module manufacturing capability.

Global Leadership:

• India launched the International Solar Alliance (ISA), headquartered in Gurugram, to promote solar energy deployment, technology cooperation and investment mobilisation among solar-rich countries located between the Tropic of Cancer and the Tropic of Capricorn.
• India continues to play a leading role in global renewable energy governance through initiatives such as One Sun, One World, One Grid (OSOWOG).

Challenges:

Technical, Financial Challenges:

• Floating solar projects involve high initial capital investment and specialised engineering requirements.
• Long-term operational efficiency depends upon effective maintenance of floating platforms, anchoring systems and electrical infrastructure.
• Integration of large-scale renewable energy requires continued expansion of transmission networks and battery storage capacity.

Environmental, Regulatory Challenges:

• Improper project design may affect aquatic biodiversity, fisheries and reservoir ecology.
• Multiple regulatory approvals involving water resources, environment and electricity authorities may delay project implementation.
• Site selection must balance renewable energy generation with irrigation, drinking water supply and ecological conservation objectives.

Way Forward:

Strengthening Floating Solar Ecosystem:

• Expand floating solar deployment through improved policy support, faster environmental clearances and greater participation of State governments.
• Strengthen domestic manufacturing of floating platforms, photovoltaic modules, batteries and associated equipment under Atmanirbhar Bharat.
• Promote research and innovation in advanced battery technologies, floating structures and digital energy management systems.
• Integrate floating solar projects with hydropower reservoirs, pumped storage facilities and smart grids to maximise renewable energy efficiency and grid stability.

Value Addition for UPSC:

Important Organisations:

• Ministry of New and Renewable Energy (MNRE).
• National Institute of Solar Energy (NISE).
• Solar Energy Corporation of India (SECI).
• International Solar Alliance (ISA).

Important Schemes:

• Pradhan Mantri Surya Sarovar Yojana (PM-SSY).
• PM Surya Ghar: Muft Bijli Yojana.
• PM-KUSUM.
• Green Energy Corridor.
• Viability Gap Funding (VGF) Scheme for Battery Energy Storage Systems (BESS).

Important Concepts:

• Floating Solar Photovoltaic (FSPV).
• Energy Storage System (ESS).
• Battery Energy Storage System (BESS).
• Gigawatt Peak (GWp).
• Central Financial Assistance (CFA)