08 November 2017
In this article nZEB energy performance requirements of two Central European and two North European countries are compared. A reference office building with economic insulation thickness in all climates was used as a starting point of the comparison. Primary energy values were simulated with national input data and technical solutions were changed so that close enough compliance was achieved in every country. It is concluded that there is no direct way to compare the performance level of national nZEBs; instead a reference building simulation method has to be used. Generally, national input data caused much more difference than the climate did.