Building energy performace certificates

The building energy performance certificate (PENB) provides in clear form the most important information concerning the energy consumption of the building, both total and partial energy consumption for heating, ventilation, water heating, lighting and other factors, if included. It also contains information about the quality of envelope (cooled) structures of the building. This makes it possible to provide a quick overview of the costs of energy operation of the building under standardized conditions or select areas with the greatest potential for energy savings. The building energy performance certificate is thus valuable information not only for those interested in buying or renting a property, but also for existing owners or sellers, because energy-efficient buildings are becoming very popular. (Figures 1a + 1b)

The building energy performance certificate is prepared in accordance with Act No. 406/2000 Coll., On Energy Management, as amended (last amendment No. 318/2012 Coll.), and Implementing Decree No. 78/2013 Coll., On Energy Performance of Buildings.

The certificate must be prepared in the following cases:

  • construction of new buildings;
  • major changes in completed buildings (over 25% of the building envelope area);
  • sale or lease of buildings or their parts.

The energy performance certificate must also be prepared (and made accessible in a public place) for buildings owned by public authorities or bodies established by such authorities.

By contrast, the certificate does not need to be prepared for buildings with energy reference area1 up to 50 m2, buildings for family recreation, in cases of inheritance, gift or divorce (transfer to one of the spouses), for buildings used for religious purposes (e.g. churches, chapels, etc.), and for industrial and agricultural buildings with annual energy consumption not exceeding 700 GJ.

The certificate is issued for 10 years, and it includes a protocol with a graphic appendix showing the classification class (A to G).

Further information on this issue and on the conditions of energy performance certificate preparation can be found in the above-mentioned documents or at the website below. If you have any questions or are interested in energy performance certificate preparation, please contact us.

Employees of Technical and Test Institute for Construction Prague (TZÚS Praha, s.p.) authorized by the Ministry of Industry and Trade of the Czech Republic:

Tomáš Klepáč
Energy Specialist of the Ministry of Industry and Trade of the Czech Republic
email:, phone: +420 595 707 251, mobile: +420 734 432 082
downloadable authorization available here

František Moler
Energy Specialist of the Ministry of Industry and Trade of the Czech Republic, phone: +420 595 707 271, mobile: +420 724 337 085
downloadable authorization available here

1 External floor area of all spaces with adjusted internal environment in the whole building, delimited by the outer surface of the building envelope structures.

Contact form

Contact person

Ing. František Moler

+420 724 337 085
+420 595 707 271
Head of AMS69 Calibration Centre, Management Systems Auditor
Ostrava Branch