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The report finds that the energy performance certificate currently has a low impact on home purchase decisions in Germany, primarily because it fails to provide clear information on ancillary costs, is rarely available during the final selection process, and energy efficiency is viewed as a secondary property feature. However, the author argues that the implementation of the EU Energy Performance of Buildings Directive (EPBD) by 2013, which mandates the publication of energy data in property advertisements, could significantly increase the instrument's visibility and relevance.

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  • The energy performance certificate has a limited effect on home buyers' decisions, as it is considered unimportant compared to other information sources, despite high general awareness (81%) and initial use during the search process (78%).
  • A primary reason for the certificate's low effectiveness is its failure to communicate ancillary costs (Nebenkosten) in a way that is useful to buyers, who are primarily motivated by cost savings.
  • The availability of the certificate is low during the critical final selection phase; buyers only saw the certificate for 35% of the properties in their shortlist, and sellers actively provided it for only 24% of those properties.
  • Energy efficiency is regarded as an insignificant criterion when compared to other property features such as location, price, and the condition of the property.
  • International evidence from the UK and Denmark suggests similar trends, where certificates often fail to influence purchase decisions or result in actual energy savings, although some UK buyers reported implementing recommended measures.

Cite the original document

APA
Amecke, H. (2011). Energieausweis: Ein Beispiel für wenig genutztes Potential. Climate Policy Initiative. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/DIW-Wochenbericht-Die-Effektivität-des-Energieausweises-Ergebnisse-aus-Deutschland.pdf
Chicago
Amecke, Hermann. Energieausweis: Ein Beispiel für wenig genutztes Potential. Climate Policy Initiative, 2011. https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/DIW-Wochenbericht-Die-Effektivität-des-Energieausweises-Ergebnisse-aus-Deutschland.pdf.
Wikipedia
{{cite report |last1=Amecke |first1=Hermann |title=Energieausweis: Ein Beispiel für wenig genutztes Potential |publisher=Climate Policy Initiative |date=24 August 2011 |url=https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/DIW-Wochenbericht-Die-Effektivität-des-Energieausweises-Ergebnisse-aus-Deutschland.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}
BibTeX
@techreport{amecke2011energieausweis, author = {Amecke, Hermann}, title = {{Energieausweis: Ein Beispiel für wenig genutztes Potential}}, institution = {Climate Policy Initiative}, year = {2011}, month = aug, url = {https://www.climatepolicyinitiative.org/wp-content/uploads/2011/12/DIW-Wochenbericht-Die-Effektivität-des-Energieausweises-Ergebnisse-aus-Deutschland.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }

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