<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Implementing provisions of the EPBD all Member States require to provide EPC (Energy Performance Certificate) when buildings are c onstructed, sold or rented. The purpose of the certificate is to compare buildings’ performance and inform the end-users. However, quite many mismatches and discrepancies could be found when comparing actual energy consumption with the once declared by the EPC. This mismatch of energy demand is known as Energy Performance Gap (EPG). It was analysed by different researchers on national levels. In the study, an overall overview of the high-performance buildings in Lithuania is performed and EPG is analysed using statistical indicators. Analysis has shown that for class A the EPG varies from −101 % to +77 %. More buildings are found to have a positive Energy Performance Gap. For class A+ and A++ variations are within a narrower interval: from +18 to 76 % and from +23 to 77 % accordingly. It confirms the findings in the other countries that very high-energy performance buildings tend to consume more than predicted. Also it is confirmed that despite differences in national certification methodologies, the same problem (just of different scale) exists and EPC schemes need revisions.</p>
</abstract>

Implementing provisions of the EPBD all Member States require to provide EPC (Energy Performance Certificate) when buildings are c onstructed, sold or rented. The purpose of the certificate is to compare buildings’ performance and inform the end-users. However, quite many mismatches and discrepancies could be found when comparing actual energy consumption with the once declared by the EPC. This mismatch of energy demand is known as Energy Performance Gap (EPG). It was analysed by different researchers on national levels. In the study, an overall overview of the high-performance buildings in Lithuania is performed and EPG is analysed using statistical indicators. Analysis has shown that for class A the EPG varies from −101 % to +77 %. More buildings are found to have a positive Energy Performance Gap. For class A+ and A++ variations are within a narrower interval: from +18 to 76 % and from +23 to 77 % accordingly. It confirms the findings in the other countries that very high-energy performance buildings tend to consume more than predicted. Also it is confirmed that despite differences in national certification methodologies, the same problem (just of different scale) exists and EPC schemes need revisions.

Energy Performance Gap Analysis in Energy Efficient Residential Buildings in Lithuania

Environmental and Climate Technologies

This work is licensed under the Creative Commons Attribution 4.0 International License.

Implementing provisions of the EPBD all Member States require to provide EPC (Energy Performance Certificate) when buildings are c onstructed, sold or rented....

Energy Performance Gap Analysis in Energy Efficient Residential Buildings in Lithuania

Published Online: Oct 05, 2021

Page range: 610 - 620

DOI: https://doi.org/10.2478/rtuect-2021-0045

Keywords
Actual demand, EPC, predicted, statistical analysis

© 2021 Violeta Motuzienė et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Energy Performance Gap Analysis in Energy Efficient Residential Buildings in Lithuania

Published Online: Oct 05, 2021

Page range: 610 - 620

DOI: https://doi.org/10.2478/rtuect-2021-0045

KeywordsActual demand, EPC, predicted, statistical analysis

© 2021 Violeta Motuzienė et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Actual demand, EPC, predicted, statistical analysis