Pantelleria is an Italian island and commune in the Strait of Sicily in the Mediterranean Sea, 100 kilometres southwest of Sicily and 60 km east of the Tunisian coast. Administratively, Pantelleria commune belongs to the Sicilian province of Trapani. The objective of this study is to evaluate the best solution for a 7MW solar plant at Pantelleria airport, achieving the highest IRR. The study focuses on providing sufficient information on the solution and thus identifies the highest financial savings over a 20-year period, taking into account the specific costs. The installation will essentially consist of photovoltaic modules located in the area with the best sun exposure, with the least environmental impact and close to the electrical grid connection point located within the airport area.