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A Review of the Regulatory Energy Performance Gap and Its Underlying Causes in Non-domestic Buildings

van Dronkelaar, C; Dowson, M; Spataru, C; Mumovic, D; (2016) A Review of the Regulatory Energy Performance Gap and Its Underlying Causes in Non-domestic Buildings. Frontiers in Mechanical Engineering , 1 10.3389/fmech.2015.00017. Green open access

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Abstract

This paper reviews the discrepancy between predicted and measured energy use in non-domestic buildings in a UK context with outlook to global studies. It explains differences between energy performance quantification and classifies this energy performance gap as a difference between compliance and performance modeling with measured energy use. Literary sources are reviewed in order to signify the magnitude between predicted and measured energy use, which is found to deviate by +34% with a SD of 55% based on 62 buildings. It proceeds in describing the underlying causes for the performance gap, existent in all stages of the building life cycle, and identifies the dominant factors to be related to specification uncertainty in modeling, occupant behavior, and poor operational practices having an estimated effect of 20–60, 10–80, and 15–80% on energy use, respectively. Other factors that have a high impact are related to establishing the energy performance target, such as early design decisions, heuristic uncertainty in modeling, and occupant behavior. Finally, action measures and feedback processes in order to reduce the performance gap are discussed, indicating the need for energy in-use legislation, insight into design stage models, accessible energy data, and expansion of research efforts toward building performance in-use in relation to predicted performance.

Type: Article
Title: A Review of the Regulatory Energy Performance Gap and Its Underlying Causes in Non-domestic Buildings
Open access status: An open access version is available from UCL Discovery
DOI: 10.3389/fmech.2015.00017
Publisher version: http://dx.doi.org/10.3389/fmech.2015.00017
Language: English
Additional information: Copyright: © 2016 van Dronkelaar, Dowson, Spataru and Mumovic. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/1476331
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