Suspension of photovoltaic panels over water canals ("Canalvoltaico"): technical feasibility, economic and environmental benefits of a Canal-Top solar plant installation in Emilia-omagna, Italy

Abstract

Solar energy has become an increasingly important part of the global energy mix. In Italy, the photovoltaic power installed has grown by 40% since 2015 and this raises the problem of land use and occupation. A viable alternative, already experienced in India, is placing solar panels on the top of water canals (Canal-Top, in Italian “Canalvoltaico”). It is a relatively new and innovative approach to solar energy installation that offers several advantages, including the potential to generate renewable energy without occupying additional land, reduce water evaporation from canals, and improve water quality by reducing algae growth. The article explores various canal-top solar projects over the world, then a viable application in the Italian region “Emilia- Romagna” is discussed, evaluating specialized designs, installation and maintenance costs, water evaporation reduction and the potential for conflicts with other water uses. Investment opportunities and risks are also discussed. © 2023, AIDI - Italian Association of Industrial Operations Professors. All rights reserved