MASTERPIECE aims at creating a digital coordination and cooperation arena to facilitate the creation and effective operation of energy communities throughout Europe. The facilities given to members of the community to contribute to services and other developments will represent the distinction of the solution offered by the project, focused on participation by citizens. The project objectives consist in: 1) Providing new opportunitie to the traditional energy consumers and to make them active agents of collaborative energy communities; 2) Creating user-centric solutions, based on participatory approaches; 3) Proposing new business strategies and incentive mechanisms for market operators craving for business opportunities linked to energy and cost reduction; 4) Configure a standardised and sound cyber-security infrastructure (including privacy). This unique approach will be demonstrated in 4 pilot sites featuring different geographic and policy contexts (France, Italy, Sweden and Turkey).