The growing production capacity from renewable energy sources requires a rethinking of the role of users and electric utilities. In this direction, in Italy, the energy authority recently envisaged the opening of the dispatching market to renewable plants and small users. The present work describes the main technical characteristics and first results of the Smart City Vizze project, a field experimentation carried out on a real medium voltage network of the Italian Autonomous Province of Bolzano. The project aims to develop an innovative monitoring and control architecture, supporting the distribution system operator in managing the distribution grid and the future aggregator in dispatching the local generation (and load).