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How much can this Directive reduce the threat of climate change?

According to the European Climate Change Programme, the Directive could deliver a reduction of up to 45 million tonnes of carbon dioxide by 2010. In order to meet the agreed Kyoto targets, the European Union must implement reductions of...
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Why was the Directive introduced?

The 160 million buildings in the EU use over 40% of Europe's energy and create over 40% of its carbon dioxide emissions, and this proportion is increasing. Under the Kyoto protocol, Europe is committed to reducing emissions and the...
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Why not one CEN standard covering all EPBD aspects?

There are several reasons why there is not just one CEN standard covering all EPBD aspects. The two main reasons are: 1. The CEN standards cover different types, with different application areas and different target groups, ranging from...
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Are CEN standards only available in English?

It is a fact that in general most of the preparatory work in the Technical Committees and working groups in CEN is in English. The underlying documentation and the preliminary drafts are in English. When publishing a draft standard (prEN...
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Why are the symbols in some of the EN ISO not always the same as in the CEN standards to support the EPBD?

For instance: in EN ISO 13789 the subscripts for transmission and ventilation are T and V in ISO and tr and ve in CEN. There may be two reasons: 1) because the EN ISO standard was already published before the common symbols were agreed...
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Why should we use a simplified method for the calculation of the energy need and use of buildings?

In particular in the context of building regulations it is essential that a prescribed method is verifiable and legally secure and that there is consensus on the procedures. Therefore, transparency, robustness and reproducibility are...
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Are the common definitions given in CEN/TR 15615 mandatory?

CEN/TR 15615 is not a standard, but a technical report and therefore the definitions (annex C) are not mandatory. However, most of the definitions are adopted also in the European standard EN 15603, which is one of the key standards in the...
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What are the future prospects for the status of the CEN standards?

We expect a further harmonization in the near future. In particular when feedback from the Member States and other target groups has lead to recommendations for improvement of the CEN standards and when these recommendations have been...
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Why is standardization at EU level so important?

Today most companies (consultants, manufacturers and contractors) work internationally. From their point of view it is preferable to have internationally accepted calculation methods and input data for the energy efficiency of buildings...
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Why isn’t it possible to download the CEN standards from a website (e.g. www.iee-cense.eu)?

Standards are copyright protected property of the publisher (CEN , ISO etc.) and not part of the public domain. Question submitted by: Dick van Dijk (TNO, The Netherlands) Anwered by: Dick van Dijk, TNO and Jaap Hogeling, ISSO (The...
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What to do if I have questions about the use or technical content of a CEN standard to support the EPBD?

In general questions on standards could be answered by the National Standard Body helpdesk. They may also refer you to their national experts who have been involved in the preparation of the standard on a national or international level....
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Why is the use of the CEN-EPBD standards not mandatory for Member States?

General The commission supported the development of the CEN standard by giving a mandate to CEN to produce the standards needed to support the implementation of the EPBD. It will be beneficial for Europe if all Member states use these...
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What is the relation between the EPBD and the developed CEN standards to support the EPBD?

The developed standards reflect the requirements of the EPBD as given in the different articles and the annex. The procedures as given in the standards meet the essential requirements as set out by the EPBD. Note that the EPBD is an...
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What is in the set of EPBD CEN Standards?

The set of CEN-EPBD standards consists of 43 titles or parts and can be grouped as follows: The building physics standards, e.g. describing the calculation of heat transfer by transmission and ventilation, load and summer temperature,...
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In which languages are the CEN standards available?

It may be that although the National Standard Body produced a national language version, the standard will always be available in English (the official text), in many cases also a French and German version may be available. The French...
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Are the calculation procedures fully harmonised?

To support the open EU market, more and more standards have been prepared as ENӳ. For building products this is even a requirement based on EU mandates to CEN according to the EU-CPD (Construction Product Directive). To stimulate an open...
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What are these and where can one find updated information on the infringement procedure regarding EPBD?

Details and full Information on infringement procedures can be found here: ec.europa.eu/dgs/energy_transport/infringements/index_en.htm For specific information regarding infringement procedures in relation to the EPBD (2002/0091),...
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What is the present status and where can one find updated information about this revision process?

Information on the recasting technique by the European Commission is available here: http://ec.europa.eu/governance/better_regulation/codif_recast_en.htm For information on the main problems, main policy objectives, and policy options,...
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Can the calculation method for the overall transmission and ventilation heat loss coefficients, which is presented in EN ISO 137

Yes, but some of the required input data may not be available at reasonable costs. For those cases default values may be provided at national level, e.g. as function of type and age of construction. Question submitted by: Dick van Dijk (...
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Many CEN-standards are ISO-standards, e.g. EN ISO 13790, 6946, 10077 and 14683. How can these standards make reference to the se

If an ISO (International Organization for Standardization) standard is also an EN ISO standard, then it is a European standard just like any other EN (European) standard. As illustrated in several CENSE Information Papers, e.g. P92 or P94...