Energy Retrofit and Economic Evaluation Priorities Applied at an Italian Case Study

In OCSE and developed Countries, the sectors which mostly suffered the 2008 financial and economic crisis, was the construction and real estate sectors. Furthermore, the buildings are responsible of about 40% of incidence on emission. The economic crisis did not allow realizing new buildings, and the existing buildings have too much greenhouse emission, that needs to be reduced. The Energy Retrofit could be a way to improve both sectors, because it reduces emissions and helps the real estate sector. However, the Energy Retrofit has some difficulties in order to evaluate both economic and technical solution. In this paper we present an Energy Retrofit simulation about an Italian case study: one building typology that is supposed realized in several different periods, having different thermo-physic parameters. For each period, four energy retrofit actions will be applied, together with the software evaluation of energy performance.