UFPR study tested FPV microclimate effects on Brazil reservoir ecosystem

Researchers from the Federal University of Paraná (UFPR) has conducted a high-frequency field study to assess the environmental impact of floating photovoltaic (FPV) systems installed on water supply reservoirs. These systems offer land-saving benefits but may influence key ecological parameters.The study focused on tracking temperature, dissolved oxygen (DO), and light for photosynthesis (PAR), which previously lacked detailed long-term data. Sensors showed a 94.7% reduction in radiation beneath FPV modules compared to lake reference areas. Despite this, only slight variations in water temperature and DO were observed in daily and monthly averages, as the FPV covered less than 1% of the reservoir surface. A microclimate formed between the modules and water surface, with temperatures 12% higher than those at the weather station. Impacts varied with meteorological conditions, FPV design and local site characteristics.