The H2020-TIMEPAC Approach for a Holistic Renovation Roadmap of Buildings

Deep renovation toward zero-emission buildings is crucial for achiev-ing the 2050 decarbonization target set by the European Green Deal. To address the high costs of one-step deep renovation, the EPBD recast (2024/1275/EU) promotes staged renovations through tailored step-by-step roadmaps (Renovation Passports). This study presents the methodological framework developed in the TIMEPAC H2020-project for implementing such roadmaps. The approach begins with an on-site energy audit to gather data for a calibrated building energy model and assess renovation needs. Staged renovation scenarios are then proposed, opti-mizing energy efficiency and costs. Finally, these scenarios are compared with the existing building to evaluate benefits in terms of final energy needs, primary energy use, use of renewables, and costs. Preliminary results highlight the “energy efficiency first” principle as key to zero-emission targets, though economic and timing challenges must be carefully addressed in staged renovation planning. The proposed approach represents an advancement towards its practical application in the Italian context, by integrating energy modelling procedures with mainte-nance planning and addressing both regulatory requirements and building owners’ specific needs.