The Parisian experience on the gap between real before and after renovation figures in condominiums

During this webinar, an expert from the Paris Climate Agency will explain how and why expected and achieved energy performance often differ. And he will present ways to correct current renovation procedures in condominiums.

Within the ACE-Retrofitting project, the Paris Climate Agency has carried out a detailed audit of 8 condominiums (641 apartments) from December 2017 to December 2019. Its purpose being to measure a broad range of indicators (i.e. real energy consumption, air quality, indoor comfort, before and after retrofitting by installing 614 measurement points during two consecutive heating periods. A number of interesting points have been highlighted, especially the disappointing results for real energy savings.