Is it correct that the set of EPB standards is mainly relevant for Europe?
No. The set of EPB standards was originally initiated by the European Commission for support the Energy Performance of Buildings Directive (EPBD). The set of EPB standards is of equal relevance at global (ISO) level. As a matter of fact, already one third of the EPB standards, for instance the overarching EPB standard (EN ISO […]
Why is the calculation of the overall energy performance of a building split into separate EPB standards?
Why is the calculation of the overall energy performance of a building split into separate EPB standards and not combined into an all-in-one standard (at least all EPB standards that are part of the overall EP calculation)? In general, the ISO and CEN standards making process is handled by various technical committees or TCs as […]
Are all National Annexes and National Datasheets publicly available?
A National Annex is filled in and published by a National Standards Body (NSB), as annex to the national implementation of the EPB standard. The NSB can choose to publish this stapled to the standard, or as separate document(s). Consequently, it is publicly available, but it may not be available for free. A National Datasheet […]
Where can I ask questions or submit comments if something is unclear or maybe wrong in one of the EPB standards under this topic?
Please us if you have a question or comment on one of the EPB standards… In general, the National Standard Body can be contacted for information and comments on any CEN or ISO standard. A list of National Standards Bodies can be found . Specifically for the EPB standards: Part of the services of the […]
Will the EPB standards provide guidance for collecting input data for use in the calculations, e.g. a complete list of input parameters?
Yes, each EPB standard has a list of all input and output data. Also, in each of the that are available <link> you can find the list of input parameters for the associated EPB standard. The challenge, however, is to see through these “blunt” lists of input data. You could easily say that the Pareto […]
Do all countries have National Annexes? And where can we find them?
Not all countries publish national annexes, and not for all standards. You are invited to read FAQ Are all National Annexes and National Datasheets publicly available? for more information on the process of preparing National Annexes. Or see FAQ Where can I find an overview of the reports from the EU Member States… for the […]
Why is international harmonization of energy performance calculation methods important?
A ‘nationally’ calculated energy performance value is the product of: the actual building (of course) “the EP METER” with which you ‘measure’ your building. This is the calculation method that consists of the national definitions, nationally assumed indoor and outdoor conditions, and –last but not least: the calculation engine. It’s obvious that you need the […]
Where can I find an overview of the reports from the EU Member States to describe their national calculation procedures, according to EPBD:2018, Annex 1?
National Annexes or National Datasheets to describe the national method in terms of the Annexes A of the five so called overarching EPB standards (acc. to EPBD:2018, Annex 1*)) are included in the national report to the European Commission and not necessarily made publicly available. *): See also FAQ If available and if publication is […]
If the set of EPB standards is used in different countries, will -for a given building- the energy performance rating be the same for each country?
No. Each EPB standard is unambiguous, however allows specific choices to be made at national/regional level for accommodating differences in climate, building tradition, policy and user behaviour. Example 1: The energy performance depends much upon the outdoor climate (e.g. temperature and solar radiation). Using different climates leads to different results. Example 2: Each country/region can […]
Where at the EPB Center website can I find an overview of National Annexes and National Datasheets for different countries?
At the page on we are collecting examples, as far as made available for publication at the EPB Center website. See also FAQs and 2020-03-03