• Harmonized Energy Performance assessment, based on the EU Common Voluntary Certification System (EVCS) for the energy performance of non-residential buildings. Benefit from a reliable tool, allowing the comparability of buildings in the EU.
• Test the implementation of a progressive renovation roadmap towards the NZEB (Near Zero Energy Building), in accordance with EU directives (EED, EPBD).
• To test the link between low-energy renovation and the quality of indoor environments.
• Test the difference between calculated and actual energy performance by linking the energy certificate (based on calculations) with the actual energy measured.
• Test the link between financial mechanisms and building energy performance, to support the use of existing financial instruments.
• Building Energy Performance Passport: A data collection tool for the building owner, with consistent data storage at one location, including maintenance history and future maintenance steps over the life of the building construction.
• Facilitate future actions, such as: renovation strategies, gradual renovation to the NZEB, due diligence reports, building evaluation).
• Support for end-users (owners or tenants) by providing information on the energy quality of the building, on a reliable and standardized basis.
• Valorisation of the pilot operations: on the ALDREN website, on the websites of all the project partners, at conferences or symposiums.
• Issuing a pilot passport, summarizing their performance based on the methodologies and tools developed during the project.

Country: France, Slovenia, United Kingdom, Spain

Type: Only offices and hotels, deep renovations

Size: > 10000 m² if possible and at least 2500 m², but small buildings are not excluded provided that they have interesting technical characteristics (energy, IAQ measurement, etc.)

Phase: We must have different situations:

• Before renovation: in the decision phase, in design, or in works
• After renovation (in use)

Energy performance after renovation: (mandatory)

• At least 60% energy savings between before and after renovation (buildings consuming much more than 125 kWh / m².year before renovation)
• Or class B of the EVCS after renovation: <75 kWh / m².year if technically, functionally and economically feasible
• Or close to class A after renovation = nZEB (<50 kWh / m².year)
• Production of renewable energy (optional) already installed or planned

Health and comfort: (optional)

• Buildings applying a European certification scheme (HQE, IVE, DGNB, BREEAM, …) with information on the relevant indicators
• Or able to provide measurement or calculation results on these themes

Economic and financial information: (optional)

• Buildings with global costs calculated
• Or able to provide economic and financial data