The global shift toward renewable energy has introduced new challenges regarding space availability in Europe, particularly for solar-based systems, which are inherently low in energy density. This means they require significantly larger areas compared to traditional energy plants. Offshore floating photovoltaic (FPV) systems represent a promising solution, particularly in the Mediterranean region, where no extreme weather events have been recorded in the past forty years. Despite this, the basin still has limited FPV installations compared to other global regions. This thesis focuses on five representative Mediterranean and European locations—Pantelleria, Gulf of Gabes, Ceuta, Jersey, and Zadar—selected based on geographical diversity and environmental relevance, and their shared need for energy for both industrial and civil use.