Located in Patti (ME), a photovoltaic system with a power of 4.98 kWp has been installed, capable of generating about 6,720 kWh of energy per year. The system covers an area of 26 square meters and ensures a self-consumption rate of 90%, significantly contributing to the energy efficiency of the building. JASolar modules and an SMA inverter, recognized for their reliability and performance, have been used. Over the course of 20 years, this system will help reduce environmental impact by avoiding the emission of 58 tons of CO2, saving 23 TOE (tonnes of oil equivalent), and reducing the emission of 1.7 kg of particulate matter, promoting a more sustainable future.