The Energy Performance of Buildings Directive (EPBD) requires a general framework and a methodology for calculating the integrated energy performance of buildings. The energy performance of a building is the amount of energy consumed or estimated to fulfil different energy requirements. This amount shall be reflected in one or more numeric indicators that take into account insulation, technical installation characteristics, design and sizing in relation to climatic variables. In order to be able to compare different energy sources, an aggregate value must also be calculated. European Standard EN 15603 covers this final step in the set of CEN standards that implement the EPBD. It defines a general framework for the assessment of overall energy use in a building, and the methods that should be used to calculate overall energy ratings. This paper gives a short introduction to EN 15603. It explains the calculated energy ratings and provides detailed information on the input and output data and on links to the other CEN standards.
Information Paper P088 of EPBD Buildings Platform