Water Quality Enhancement through Floating Solar FPV Systems: A Review


Water bodies play a crucial role in supporting ecosystems and providing essential resources for human societies. However, they are often susceptible to various environmental challenges, including water quality degradation. In recent years, floating solar photovoltaic (FPV) systems have gained attention not only for their renewable energy generation capabilities but also for their potential to enhance water quality. This article provides a comprehensive review of the research conducted on the water quality enhancement through floating solar FPV systems, highlighting their effectiveness and associated benefits.

  1. Nutrient Management and Algae Control

    Floating solar FPV systems can help mitigate water quality issues caused by excessive nutrient levels and algal blooms. By shading the water surface, these systems limit sunlight penetration, reducing the availability of light for algae growth. This shading effect suppresses the development of harmful algal blooms and mitigates associated negative impacts, such as oxygen depletion and water toxicity. Furthermore, the panels themselves can act as barriers, preventing the deposition of nutrients from surrounding terrestrial areas, thus reducing nutrient loading in the water body.

  2. Temperature Regulation and Thermal Stratification

    Water temperature plays a critical role in maintaining a healthy aquatic ecosystem. Floating solar FPV systems provide a cooling effect on the water surface, minimizing thermal stratification and promoting thermal homogeneity. By reducing the surface water temperature, these systems can help prevent thermal pollution and mitigate the adverse effects on aquatic organisms. Moreover, the prevention of thermal stratification enhances the mixing of nutrients and oxygen throughout the water column, supporting the overall health and vitality of the ecosystem.

  3. Reduction of Evaporation

    Water scarcity is a significant concern in many regions, exacerbated by the impacts of climate change. Floating solar FPV systems help reduce water evaporation by shading the water surface. This shading effect decreases the direct exposure of water to sunlight, leading to lower evaporation rates. The conservation of water through evaporation reduction is particularly beneficial in arid and semi-arid regions, where water resources are limited. By preserving water supplies, floating solar FPV systems contribute to sustainable water management and support local ecosystems and human communities.

  4. Sedimentation Control and Water Clarity

    Sedimentation is a common issue in water bodies, leading to reduced water clarity and detrimental effects on aquatic life. Floating solar FPV systems can act as barriers, preventing sediment particles from settling in the water body directly beneath the panels. This control of sedimentation helps maintain water clarity, allowing sunlight to penetrate deeper and supporting the growth of aquatic vegetation. Improved water clarity benefits both the aquatic ecosystem and recreational activities, enhancing the aesthetic value of the water body.

  5. Environmental Considerations and Adaptation

    To ensure the successful implementation of floating solar FPV systems for water quality enhancement, careful consideration of environmental factors is necessary. Site-specific assessments and environmental impact studies should be conducted to evaluate the potential impacts on local flora and fauna. Additionally, proactive monitoring programs should be implemented to track water quality parameters, such as dissolved oxygen levels, pH, and nutrient concentrations. Regular maintenance and cleaning of the solar panels are essential to prevent the accumulation of debris and to maintain optimal system performance.


Floating solar FPV systems offer a promising approach to enhance water quality in various water bodies, including reservoirs, lakes, and ponds. Through nutrient management, algae control, temperature regulation, evaporation reduction, sedimentation control, and improved water clarity, these systems provide tangible benefits for both the environment and human societies. However, it is crucial to conduct thorough site assessments, implement proper monitoring protocols, and ensure responsible maintenance practices to minimize any potential negative impacts. Further research and development, combined with effective policy frameworks, will help unlock the full potential of floating solar FPV systems in water quality enhancement, contributing to a sustainable and resilient water resource management paradigm.

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