Project details



eXTENDing the energy performance assessment and certification schemes via a mOdular approach

Start date: 01.09.2019

Duration: 36 months

Coordinator: Technische Universit├Ąt Wien

Budget: 2.06 M€


X-tendo and its toolbox introduce ten features of the next generation of energy performance certificates, to provide public authorities with improved compliance, reliability, usability and convergence of next-generation energy performance assessment and certification.

To date, the implementation of energy performance certificates (EPCs) varies significantly across Member States in terms of scope and available information, resulting in some cases in limited reliability, compliance, market penetration or acceptance by the users. Aspects like smart dimension or the interaction with the district energy system are only insufficiently covered in current EPC schemes. In order to become a catalyst for energy renovations, the next-generation EPC must provide an improved and more reliable service to the end-users.

X-tendo will develop and test next-generation EPC features in 9 countries around Europe covering 40% of the EU building stock, and assist the implementation of the features into the existing EPC schemes. This will support the public authorities in these regions in the recasting of the existing EPC schemes and lead to increased rates of application of EPCs as well as renovation activities in a remarkable number of defined regions across EU.

List of achievements

More information about the X-tendo toolbox here.


Contact person: Lukas Kranzl
Address: Technische Universit├Ąt Wien
Tel: +43 (0) 1 58801 370351