A review of benchmarking, rating and labelling concepts within the framework of building energy certification schemes

Pérez-Lombard, Luis; Ortiz, José; González, R.; Maestre, Ismael Rodríguez

doi:10.1016/j.enbuild.2008.10.004

Cited by 376 publications

(199 citation statements)

References 6 publications

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“…Different approaches to calculating the energy classification of dwellings have been adopted across EU Member States [2,5]. In Ireland and in the UK the energy classification of a building compares energy consumption and CO2 emissions theoretically calculated for an actual building, with a standardised benchmark building of the same typology and floor area as shown in Eqs.…”

Section: Introductionmentioning

confidence: 99%

“… clarity so that users should be able to understand a) the overall result and b) the effect of choices (input) on the calculation result [5,9], 4  reproducibility so that for a specific building the underlying method used leads to the same result; irrespective of subjective or arbitrary choices and independent of the user [2,5],  transparency and encourage improvement to ensure the energy label of a given building is relevant and useful [2,5,9],  cost-effectiveness  obtaining the building data needed for an energy performance certificate must not be too labour intensive to avoid significantly adding to the cost of the label particularly compared to the impact of the certificate on the energy performance [5].…”

Section: Introductionmentioning

confidence: 99%

“… Presents the calculated energy performance coefficient of the building on a scale of A (which should have the lowest fuel bills) to G [2].…”

Section: Introductionmentioning

confidence: 99%

“…Building energy classification allows inter-comparison of building energy use [1,2] Certificates (EPCs), be issued for buildings constructed, sold or leased across the European Union [3,4]. Different approaches to calculating the energy classification of dwellings have been adopted across EU Member States [2,5].…”

Section: Introductionmentioning

confidence: 99%

“… credibility and accuracy so that buildings with better labels should use less energy [2,9],  applicability to a wide variety of buildings balancing some loss of accuracy with remaining representative [5],…”

Section: Introductionmentioning

confidence: 99%

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The statistical relevance and effect of assuming pessimistic default overall thermal transmittance coefficients on dwelling energy performance certification quality in Ireland

Ahern¹,

Norton²,

Enright³

2016

Energy and Buildings

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Please cite this article as: Ciara Ahern, Brian Norton, Bernard Enright, The statistical relevance and effect of assuming pessimistic default overall thermal transmittance coefficients on dwelling energy performance certification quality in Ireland., Energy and Buildings http://dx.doi.org/10. 1016/j.enbuild.2016.05.089 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 1The statistical relevance and effect of assuming pessimistic default overall thermal transmittance coefficients on dwelling energy performance certification quality in Highlights Appraises the necessity of use of pessimistic default U-values in energy labelling.  Recommends a statistically relevant selection point for default U-values. Assesses impact of default use on building performance certification quality. Highlights inappropriate use of default U-values as energy model inputs. Highlights how default use may impact uptake of residential upgrade measures. AbstractIn the EU, Energy Performance Certificates (EPCs) are issued for dwellings whenever they are constructed, sold or leased. Where requiring data would be prohibitively costly, nationally applicable default-values for the thermal transmittance coefficients of the building envelope are employed. Use of such worst case default U-values ensure that a poor dwelling does not attain a better energy rating than is merited. In the absence of empirical data in Ireland thermal-default U-values, as in many other EU member states, are determined by the type and date of construction and then prevailing building codes. Using 463,582 dwellings representing 32% of the total Irish dwelling stock, this work assesses the relevance of current default U-values. Significant levels of retrofits have been found to lead to the default UValues used now being higher that is typical in reality, thus decreasing the accuracy, and hence credibility, of an EPC. Lack of certification accuracy also inhibits investment in energy efficiency.

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Section: Introductionmentioning

confidence: 99%