Benchmarking Energy Use of Existing Hellenic Non-residential Buildings

The total number of buildings in Greece amount to 4.1 million of which 20% are exclusivenon-residentialbuildings that usually have high energy consumption due to specific building uses. The present work exploits data from energy performance certificates to derive relevant benchmarks.Recommended energy conservation measures are identified and analysed to identify the most common measures.Finally, a methodology is elaborated for deriving empirical adaptation factors to relate the normative calculated heating energy consumption with actual energy use, if available.