Floating solar power potential for the Alto Adige region of Italy

This contribution investigates the untapped solar power potential across the lakes within the hydropower reservoirs nestled in the Alto Adige region of Italy. With the region housing more than 500 hydropower plants, amounting to approximately 90% of the regions electricity generation, these hydropower plants bear the burden of electricity generation within the region. Moreover, only 3.6% of the total energy is generated by solar energy. However, these plants boast large surface areas on the reservoirs which remains untapped. As the global energy demand surges and sustainable power sources become imperative, leveraging solar energy atop water reservoirs presents a promising opportunity. The study employs Geographic Information Systems coupled with solar radiation modelling to assess and quantify the solar energy capacity of these reservoirs. The region is characterized by a typical Alpine climatology with warm summers and cold and dry winters, and a complex topography of valleys and peaks. Considering the unique topographical characteristics and climatic conditions of the region, the research evaluates the feasibility and viability of harnessing solar energy over these reservoirs. Preliminary findings underscore the substantial yet underutilized solar power potential in this hydro-rich landscape, opening avenues for further renewable energy generation strategies. The outcome of this study is not only to contribute to enhancing the renewable energy portfolio of the region but also to advocate for innovative and sustainable approaches. This added power potential will be further utilized for reducing the load on hydropower plants during peak load times. Moreover, this can be integrated with pumped hydro storage systems for optimum electricity generation and flexibility of the energy systems.