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Handling data uncertainties when using Swedish energy performance certificate data to describe energy usage in the building stock
Chalmers University of Technology, Sweden.ORCID iD: 0000-0002-5044-6989
2015 (English)In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 102, p. 328-336, article id 5893Article in journal (Refereed) Published
Abstract [en]

Abstract The EU directive to create Energy Performance Certificates (EPC) for all buildings was implemented in Sweden as a tool to advise building owners on possible improvements and to give energy efficiency visible market value. The Swedish EPCs include measured energy usage. Currently 82% of the buildings have EPCs; this database makes it possible to create overview and to validate models of the building stock in an unprecedented high detail. However, the process of issuing Swedish EPCs has received criticism from real estate agents, real estate owners, Energy Experts, and Boverket, the national agency responsible for EPC data collection. In order to use the EPC data for describing the building stock it is necessary to assess and remediate the data quality. This has been done by merging the EPC data with databases of the Housing and Urban Development office and one of the larger real estate companies in Sweden, Riksbyggen. The Swedish EPC specific area measurement, Atemp, is found to vary according to methods of derivation. The method of estimating Atemp is improved using a stepwise regression model (R2 = 0.979). This method can be applied to subsets of EPCs depending on the intended way of describing the building stock. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2015. Vol. 102, p. 328-336, article id 5893
Keywords [en]
Atemp, Building area, Building stock, Data quality, Energy performance certificates, Energy usage, Buildings, Data handling, Energy utilization, Regression analysis, Urban growth, Building areas, Building stocks, Energy performance, Energy efficiency
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-60856DOI: 10.1016/j.enbuild.2015.05.045Scopus ID: 2-s2.0-84935034762OAI: oai:DiVA.org:ri-60856DiVA, id: diva2:1704373
Note

 The authors would like to thank: Hans Nilson at Riksbyggen for technical assistance and helpful discussions, Christer Rosfjord at Boverket for the time spent assembling the Gothenburg EPC dataset and Eric Jeansson at HUD for giving us access to the Gothenburg spatial city plan. This work was supported by the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning – Formas , within the Homes for Tomorrow project.

Available from: 2022-10-18 Created: 2022-10-18 Last updated: 2023-05-25Bibliographically approved

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Mangold, Mikael

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