Design and implementation of nZEB buildings in Poland. Building certification.

The article will discuss the design and construction aspects of nearly zero-energy buildings (nZEB) in Poland. It is the newest building standard introduced by the Directive on the energy performance of buildings 2010/31/EU. The directive made the implementation of nZEB buildings compulsory in European countries. The article will present analyzes of the energy performance of nZEB buildings, in accordance with Polish legal requirements, and discuss the possibility of achieving this standard in terms of economic efficiency. An important issue is also the certification of newly designed buildings, allowing the promotion of buildings with more restrictive parameters than the minimum energy efficiency requirements specified for nZEB buildings. In the article, the authors will present the developed methodology for certifying buildings in Poland, based on the requirements related to energy efficiency, and on in situ testing of buildings. The article will also present examples of building certification in Poland.