Energy certificate – tool for building renovation

Energy Performance Certificate for buildings is an European instrument for promotion of energy efficiency. Present work deals with the Energy Performance Certificate in Slovenia, as provided by current legislation. The first part deals with the methodology of calculation of energy indicators in the case of apartment building in Ljubljana. By comparing the calculated values with the measured ones the thesis tries to find the causes of deviations and offer solutions for improvement of certification protocol. Furthermore a comparison of results from different assessors is done, in terms of repeatability of the results, and some proposals for improvement are made. In the second part of the study possible improvement measures for more efficient energy use in buildings are investigated on the case of existing old apartment building. A simple life cycle cost analysis is performed and comparison between different renovation scenarios is done. It provides a proposal for the integration of the above recommendations in energy performance certificate of buildings.