The ENEDI (Energy in Building) Group of the UPV/EHU-University of the Basque Country is working to improve the quality of homes and all existing buildings in general in line with the criteria established by European directives on energy saving, thermal insulation and energy efficiency of buildings, as well as other criteria of sustainability, habitability, durability, functionality and maintenance. Right now, an experimental installation is being set up. It is being used to test the energy technologies that are expected to be gradually incorporated into buildings over the next few years.