Energy Performance Certificate of building and confidence interval in assessment: An Italian case study

In this paper, the results of a case study located in Italy are shown. In this example, 162 independent technicians on energy performance of building evaluation have studied the same building. The results reveal which part of confidence intervals is dependent on software misunderstanding and that the energy classification ranges are able to tolerate the fluctuation of energy indices. The example was chosen in accordance with the legislation of the Emilia‐Romagna Region on Energy Efficiency of Buildings. Following these results, some thermo‐economic evaluation related to building and energy labelling are illustrated, as the EPC, which is an energy policy tool for the real‐estate market and building sector to find a way to build or retrofit an energy efficiency building. The Directive 2002/91/CE introduced the Energy Performance Certificate (EPC), an energy policy tool. The aim of the EPC is to inform building buyers about the energy performance and energy costs of buildings. The EPCs represent a specific energy policy tool to orient the building sector and real‐estate markets toward higher energy efficiency buildings. The effectiveness of the EPC depends on two factors: