After having analyzed some of the most important projects and proposals, which led to the definition of "rules" to follow in the construction of effective sets of indicators, certain conclusions have been drawn about the ability or inability of some cities to reach their objectives.

Within this context, the Indicator-based Interactive Decision Support and In-formation Exchanged Platform for Smart Cities (INDICATE) founded by the 7th Framework of the European Union is based on the use of sustainable indicators. The main goal of the project is the realization of a supporting tool able to guide potential stakeholders, Public Administration and private investors, towards the right choice to make, in order to improve the energy efficiency of cities. The DIMMER project is another European funded project, which is similar to the INDICATE project, but its main goal is to monitor buildings and increase users' awareness; in this case the demonstrator is a distric in Turin.

The thesis was developed in relation to both projects. The research carried out within the INDICATE project and the practical part referring to the DIMMER demonstrator in Turin are alike in some respects. The most interesting aspect was testing the energy simulation software used by the INDICATE project on a building which is part of the DIMMER district.

In particular, the interoperability between the 3D modelling tool Revit Architecture and the energy simulation software IES<VE> was tested; the results obtained show how the process followed throughtout the thesis was valid and efficient, although there are still some limits related to the workflow from one software to the other.