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Definition of nearly Zero Energy Buildings as used for market tracking - ZEBRA2020

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This report from the ZEBRA2020 project aims to set up a clear methodology for the definition of nearly Zero-Energy Buildings (nZEBs) in the context of market tracking, both in new constructions and in (deep) renovations.


As building standards, climate, calculation methodologies and building traditions vary significantly between Member States, there is a need for common denominator to define nZEBs on a European scale. ZEBRA2020 endeavours to find this denominator, as well as to monitor the uptake of nZEB on the renovation market.


The main ZEBRA2020 approach for measuring and monitoring the ambition level and quantity of newly constructed and renovated buildings in EU Member States is the nearly zero-energy building radar, which has first been developed in the COHERENO project. The nZEB radar clusters all buildings in the following four building energy performance categories:


  1. Net zero energy buildings / Plus energy buildings
  2. nZEB buildings according to national definitions
  3. Buildings with an energy performance better than the national requirements in 2012
  4. Buildings constructed/renovated according to national minimum requirements in 2012


By establishing these qualitative categories, combined with quantitative yearly construction values, the basis for a later qualitative cross-county building market comparison will be established. Gathering numbers each year will additionally allow monitoring the evolution towards more efficient standards over time. Based on all individual national results, finally an EU radar will be developed, bringing together all national data in a comparable way.



For further information or to download the report, please visit the relevant ZEBRA2020 website.