Electricity generation from renewable sources is definitely expected to grow in the next years, also thanks to a huge solar photovoltaic installed capacity, that will contribute to transform the energy mix and satisfy the established goals for the energy transition. In this framework, the idea of a traditional PV plant has evolved, combining the energy production and the safeguard of agricultural species and arable land: thus, an Agri-PV system is conceived. The goal of this thesis, developed in collaboration with the international energy company ENGIE, is to elaborate a software tool to identify the sources of losses and causes of underperformance of an Agri-PV utility-scale plant, located in Mazara del Vallo (Sicily, latitude of 37°47’37.70” N), owned by the Italian company ENGIE ENERGIES ITALIA S.r.l.