This thesis explores the establishment of a Renewable Energy Community (REC) on the island of Ischia, focusing on the environmental, economic and social benefits of shared renewable energy use among local members. The project aligns with the European Union’s efforts to reduce greenhouse gas emissions and promote a sustainable energy transition by actively involving citizens, businesses and institutions in the production and consumption of renewable energy generated locally. The Italian regulatory framework supporting renewable energy communities was analyzed, with particular focus on key legislation, including the transposition of the European RED II Directive. Recent regulations provide incentives and operational guidelines for self-consumption, facilitating the financial sustainability of communities.