Enhancing Water Efficiency through Co-located Floating Solar FPV and Aquaculture Systems


As the world faces the dual challenges of water scarcity and increasing energy demand, innovative approaches are needed to maximize resource efficiency and promote sustainable development. This article explores the potential benefits of integrating floating solar photovoltaic (FPV) systems with aquaculture practices to enhance water efficiency. The co-location of these two systems offers a unique opportunity to optimize land and water use, conserve water resources, and promote renewable energy generation.

  1. Water-Energy Nexus: Challenges and Opportunities

    a. Water Scarcity : Water scarcity is a pressing global issue, exacerbated by population growth, climate change, and competing demands for water resources. Traditional energy generation methods, such as thermal power plants, are water-intensive, further straining water supplies. Co-locating floating solar FPV systems with aquaculture can reduce water usage and alleviate stress on freshwater sources.

    b. Synergistic Benefits : The integration of floating solar FPV and aquaculture systems creates a mutually beneficial relationship. The solar panels provide shade, reducing water evaporation in aquaculture ponds or tanks. Simultaneously, the water surface cools the solar panels, enhancing their efficiency. This symbiotic relationship optimizes resource utilization and offers environmental, economic, and social advantages.

  2. Water Efficiency Benefits of Co-located Systems

    a. Reduced Evaporation : Water evaporation is a significant challenge in arid and semi-arid regions. By installing floating solar panels over aquaculture ponds or reservoirs, evaporation rates can be reduced. The shading effect of the solar panels reduces direct exposure to sunlight, minimizing evaporation and conserving water resources.

    b. Enhanced Water Quality : Solar panels act as a protective barrier, shielding aquaculture ponds from excessive sunlight. This reduces the growth of algae, controls water temperature, and improves water quality for aquatic organisms. Enhanced water quality creates a healthier environment for fish and other aquatic species, promoting sustainable aquaculture practices.

    c. Increased Productivity : The co-location of floating solar FPV and aquaculture systems optimizes land and water use, enabling increased productivity in limited spaces. By utilizing the same water body for both energy generation and aquaculture, valuable land is conserved. This approach allows for the cultivation of additional fish or other aquatic species, contributing to food security and economic growth.

  3. Case Studies and Best Practices

    a. China’s Integrated Fishery-Solar PV Project : China has implemented innovative projects that integrate fish farming with floating solar PV systems. These projects demonstrate the potential for increased food production and renewable energy generation. The solar panels provide shade, enhancing fish growth, while the fishponds help maintain optimal operating temperatures for the solar panels.

    b. European Union’s Aquaculture-Solar Initiatives : Several European countries have embraced co-located aquaculture-solar projects to enhance water efficiency. These initiatives combine sustainable aquaculture practices with floating solar PV installations, offering environmental and economic benefits. These projects demonstrate the potential for water conservation, reduced carbon emissions, and increased renewable energy generation.

  4. Considerations and Future Outlook

    a. Technological Innovations : Continuous advancements in floating solar FPV and aquaculture technologies are essential for maximizing water efficiency. Research and development efforts should focus on improving system design, panel efficiency, and water management techniques to optimize resource utilization and increase overall system performance.

    b. Policy and Regulatory Support : Governments should provide policy incentives and regulatory frameworks to encourage the integration of floating solar FPV and aquaculture systems. This support can include financial incentives, streamlined permitting processes, and the promotion of research and development collaborations. Policy interventions will facilitate widespread adoption and ensure the long-term viability of co-located systems.


The co-location of floating solar FPV systems and aquaculture presents an innovative approach to enhance water efficiency, promote sustainable energy generation, and support food production. By leveraging the synergies between these systems, it is possible to conserve water resources, reduce evaporation, improve water quality, and increase productivity. Continued research, technological advancements, and supportive policies will be crucial in realizing the full potential of co-located floating solar FPV and aquaculture systems. This integration represents a promising pathway towards a more sustainable and resilient future.

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