European cities are essential actors for transition to a low carbon society on a 2050 horizon. Urban activities account for 80 % of energy consumption in Europe as well as most GHG emissions. The need for a new paradigm based on energy efficiency and saving thus represents both a challenge and an opportunity to local authorities who have to deal with the complexity of urban systems and energy issues. In light of this realization, the Smart Energy Master project conducted by the Department of Civil, Architectural and Environmental Engineering at the University of Naples Federico II aims to develop a model of governance for local energy saving and efficiency. One of the results of this research project is the Urban Saving Energy Model aimed at integrating the different subsystems in which a city can be structured with energy consumption at a neighborhood scale. This paper describes the model in question and some of the results achieved by applying the UrbanSEM to three Naples neighborhoods.