Powering India's Solar Future Through Floating Solar and Supply Chain Reforms

Powering India's Solar Future Through Floating Solar and Supply Chain Reforms

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Key takeaways

  • India's cumulative solar power capacity reached 164 GW by July 2026, supported by a record addition of 44.5 GW during 2025-26.
  • The Cabinet approved the Pradhan Mantri Surya Sarovar Yojana with an outlay of ₹5,070 crore to establish 5 GW of floating solar capacity and 10,000 MWh of energy storage on inland water bodies.
  • India relies on foreign supply chains for over 50% of its solar cells and modules, spending nearly $4 billion on imports in FY2024.
  • According to estimates by the Central Electricity Authority, India must expand its solar capacity to 364 GW by 2031-32 to meet national green transition targets.
  • Solar panel waste in India is projected to reach 600 kilotonnes by 2030, with 67% originating from five leading solar states.

Why in News

  • The Union Cabinet recently approved the Pradhan Mantri Surya Sarovar Yojana to boost land-neutral solar generation.
  • This scheme targets 5 GW of floating solar power capacity combined with co-located energy storage systems.
  • It provides a land-neutral approach to clean energy generation by placing solar panels on inland water bodies and reservoirs.
  • While India's overall solar capacity is growing rapidly, problems like upstream import reliance and grid intermittency remain.
  • Fixing these structural issues requires value-chain integration and circular-economy reforms to protect long-term energy security.

PM Surya Sarovar Yojana

  • The Pradhan Mantri Surya Sarovar Yojana (PM-SSY) is a Central initiative that builds Floating Solar Photovoltaic systems with Energy Storage Systems.
  • The scheme works under the administrative control of the Ministry of New and Renewable Energy (MNRE).
  • The government has approved a total Central financial outlay of ₹5,070 crore for this project.
  • The project sets a specific target to add 5,000 MW of floating solar capacity across the nation.
  • Every project must include co-located battery storage for at least two hours, creating a minimum total storage capacity of 10,000 MWh.
  • The government will sanction these projects between 2026-27 and 2030-31, with financial assistance running until 2032-33.
  • The National Institute of Solar Energy estimates India's floating solar potential at 102.18 GWp, but operational capacity was only 700 MW when approved.
  • Floating panels use existing water surfaces, which prevents competition for land among solar developers, farmers, forests, and local housing.
  • Adding energy storage lets power plants save daytime solar electricity and supply it during high evening demand, boosting grid stability.
  • Floating panels lower water evaporation in reservoirs, while the natural cooling effect from water boosts solar cell efficiency.

Current Status of Solar Power Generation in India

  • India's total solar power capacity reached around 164 GW by July 2026, rising over 58 times from 2.82 GW in 2014.
  • The country added a record 44.5 GW in 2025-26 up to November 2025, plus another 14.33 GW between April and July 2026.
  • According to MNRE and IRENA, India ranks 3rd globally in total installed renewable energy capacity.
  • Ground-mounted solar plants dominate the sector, contributing around 122 GW to total capacity.
  • Major utility-scale projects include Bhadla Solar Park in Rajasthan, Pavagada Solar Park in Karnataka, and Rewa Ultra Mega Solar Park in Madhya Pradesh.
  • The Rewa solar plant sends clean power to the Delhi Metro, demonstrating how states can trade green energy across borders.
  • Mega solar parks offer economies of scale, shared transmission systems, and lower electricity tariffs through competitive bidding.
  • Grid-connected rooftop solar capacity reached nearly 30 GW, driven by the PM Surya Ghar: Muft Bijli Yojana aimed at one crore homes.
  • Over 43 lakh households joined the rooftop scheme by June 2026, adding 14.8 GW of capacity by August 2026.
  • Families are becoming prosumers who generate their own clean power, meet domestic needs, and export surplus electricity back to the grid.
  • Beyond typical solar parks, India holds 4.77 GW in hybrid projects and 6.51 GW in off-grid systems.
  • The Khavda Renewable Energy Park in Gujarat combines massive solar and wind power generation within one integrated complex.
  • Combining solar and wind power improves land and grid use because both energy sources peak at different times of the day.
  • States like Rajasthan, Gujarat, Karnataka, Tamil Nadu, Maharashtra, and Andhra Pradesh lead in installations due to high solar irradiation and friendly policies.
  • Gujarat built early canal-top solar projects, while Karnataka's Pavagada Solar Park uses land-leasing to give farmers recurring income.
  • Eastern, Himalayan, and northeastern states lag behind in solar installations, showing a clear regional solar divide.
  • The PM-KUSUM scheme promotes local solar plants, standalone pumps, and grid-connected farm feeders to clean up agriculture.
  • PM-KUSUM aims to add 34.8 GW of total capacity, which includes deploying 14 lakh stand-alone solar pumps.
  • Solar pumps save farmers money on diesel and offer daytime electricity, though unmonitored pumping risks groundwater over-extraction.
  • India is expanding floating solar photovoltaic systems on reservoirs to avoid land conflicts, such as the Omkareshwar Floating Solar Project in Madhya Pradesh.
  • The Pradhan Mantri Surya Sarovar Yojana expands this model by aiming for 5 GW of floating solar and 10,000 MWh of storage capacity.
  • India's solar industry is shifting toward a solar-manufacturing hub, reaching 100 GW of module capacity under the Approved List of Models and Manufacturers.
  • The PLI Scheme for High-Efficiency Solar PV Modules allocated 39.6 GW of manufacturing capacity to 11 companies under Tranche-II.
  • States like Gujarat, Tamil Nadu, Telangana, and Andhra Pradesh are turning into major manufacturing hubs for solar hardware.
  • The Central Electricity Authority estimates that India needs 364 GW of solar capacity by 2031-32 to meet green transition targets.
  • Rising demand from electric mobility, green hydrogen, data centres, and heavy industry makes solar power central to energy security.

Key Innovations in Solar Power Sector

  • Advanced technologies like TOPCon, heterojunction, and perovskite-silicon tandem cells capture more sunlight and outperform traditional silicon modules.
  • The Department of Science and Technology supports active research in perovskites, quantum dots, graphene, and advanced tandem cells.
  • Bifacial modules produce electricity from both sides by capturing direct sunlight on top and reflected light on the back.
  • Bifacial panels perform exceptionally well in bright and reflective regions like Rajasthan, Gujarat, and Ladakh.
  • Floating solar systems conserve land, reduce water evaporation, and keep solar panels cool to boost overall electricity output.
  • The Ramagundam Floating Solar Power Plant in Telangana serves as a successful example of reservoir-based power generation.
  • Agrivoltaics places raised solar panels over farmland, allowing farmers to grow shade-tolerant crops underneath while generating power.
  • Canal-top solar installations generate clean power directly over water channels without using extra land, while reducing water loss from evaporation.
  • Similar land-neutral panels can go over highways, railway stations, parking structures, factory roofs, and irrigation channels.
  • Cheap solar electricity can run electrolysers to produce green hydrogen, providing clean fuel for steelmaking, refineries, and fertilizers.

Challenges

  • India relies heavily on imported polysilicon, ingots, wafers, solar cells, and machinery, despite having large module assembly factories.
  • China controls most global upstream solar production, meaning trade restrictions or shipping issues can spike Indian costs and delay projects.
  • India imported almost $4 billion worth of solar cells and modules in FY2024, depending on China for over 50% of these components.
  • This creates assembly-led self-reliance, where local factories build modules using imported components rather than domestic inputs.
  • Rapid expansion of module factories without domestic cells, wafers, and polysilicon creates an inverted manufacturing pyramid.
  • Small manufacturers face technological obsolescence as the industry upgrades from old mono-PERC modules to TOPCon and heterojunction cells.
  • Solar power peaks around noon, while electricity demand spikes in the evening when solar output falls, creating the duck curve.
  • This daily gap means total installed capacity is not equivalent to firm capacity, leaving grid managers without steady power.
  • Solar plants concentrate in western and southern states, creating a generation-evacuation mismatch with power-hungry industrial hubs.
  • Over 11 GW of solar and wind capacity in Rajasthan and Gujarat faced severe power curtailment due to delayed power line construction.
  • Utility-scale solar plants need 1.2 to 2 hectares of land per MW, creating intense competition for land resources.
  • Solar projects can disrupt farming, grazing, local communities, and wildlife habitats like the endangered Great Indian Bustard.
  • Solar panels last 20 to 25 years, but damaged or retired modules are already creating a growing solar-waste burden.
  • Research estimates that total solar panel waste in India could reach 600 kilotonnes by 2030.
  • About 67% of this solar waste will come from five states: Rajasthan, Gujarat, Karnataka, Andhra Pradesh, and Tamil Nadu.
  • Manufacturing solar gear requires critical minerals like silver, copper, lithium, nickel, cobalt, gallium, and rare-earth elements.
  • Foreign control over critical mineral supply chains exposes India to mineral nationalism and sudden price spikes.
  • Solar panels in dry regions like Rajasthan and Gujarat lose efficiency when covered in dust, requiring constant washing.
  • Conventional wet cleaning consumes scarce water in arid areas, while high desert heat damages panels over time.

Way Forward

  • India must move from simple module assembly to full vertical integration, making polysilicon, wafers, cells, and specialized glass locally.
  • The PLI Scheme for High-Efficiency Solar PV Modules should reward genuine local value addition and technological progress rather than simple assembly.
  • Setting up dedicated Solar Manufacturing Clusters with shared testing labs, strong grid connections, and port links will lower production costs.
  • Solar farms over a specific size should include mandatory Battery Energy Storage Systems or pumped-hydro storage to supply firm power.
  • Power grids should adopt time-of-day tariffs that pay higher rates for electricity delivered during evening peak hours.
  • State governments should use satellite mapping to build solar-land banks that avoid farmlands, forests, and grazing commons.
  • Promoting agrivoltaics allows farmers to grow crops under raised solar panels, combining power generation with agricultural income.
  • Every solar panel should feature a Digital Solar Passport tracking its materials, manufacturer, installation history, and recycling instructions.
  • Government policy should enforce Extended Producer Responsibility certificates to ensure manufacturers safely collect and recycle old panels.
  • Regional solar-recycling hubs can recover precious metals like silver, copper, and silicon from retired solar hardware.
  • Public research funds should back local work on TOPCon, perovskite-silicon tandem cells, bifacial modules, and recyclable designs.
  • Research partnerships between IITs, IISc, National Institute of Solar Energy, and private industry can bring lab discoveries to market quickly.
  • Financial systems should use green bonds, blended finance, and priority-sector lending to reduce borrowing costs for developers.
  • Creating a national Solar Credit Guarantee Fund will help small businesses, housing societies, and rural cooperatives access loan funding.
  • The PM-KUSUM scheme should integrate smart meters, groundwater monitoring, micro-irrigation, and fair power tariffs.
  • Offering fair feed-in tariffs will make selling electricity more profitable than pumping groundwater, protecting depleted aquifers.

Conclusion

  • India's rapid solar growth, driven by mega projects, rooftop expansion, and the Pradhan Mantri Surya Sarovar Yojana, marks a major move toward land-neutral power.
  • Reaching the national target of 500 GW of non-fossil capacity by 2030 requires fixing supply chain reliance, grid bottlenecks, and land conflicts.
  • Balancing rapid solar deployment with local manufacturing, circular waste management, and environmental protection will determine India's green transition success.