{"title":"Systematic examination of energy performance gap in low-energy buildings","authors":"Yefei Bai, Cong Yu, Wei Pan","doi":"10.1016/j.rser.2024.114701","DOIUrl":null,"url":null,"abstract":"<div><p>Low-energy buildings (LEBs) play an important role in improving energy efficiency, reducing energy use, and mitigating carbon emissions to achieve the 2050 global decarbonisation target. However, increasing evidence indicates that energy performance gap (EPG), defined as the difference between predicted and actual energy performance, significantly inhibits the successful delivery of LEBs. This study aims to systematically examine EPG in the context of LEBs using the combination of the methods of literature review and meta-analysis with 76 carefully selected cases of LEBs from previous studies. Drawing on the dialectical system theory, the study develops a novel dialectical system framework to ensure the systematicity and comprehensiveness of the examination of EPG in LEBs. A new life cycle–human–technology–organisation framework is also established to clarify the complex causes of the EPG. The findings reveal that EPG in LEBs ranges from −86 % to +483 % with an average of +58 %. More than 80 % of the LEBs have a positive gap that their actual energy consumption is greater than their predicted energy consumption. It is found that technology-related and human-related causes of EPG have been popularly investigated, but organisation-related causes have been far inadequately explored. A roadmap for pursuing zero-energy gap is proposed to promote the successful delivery of LEBs. Knowledge gaps are identified, which point future research directions for achieving a systematic understanding of EPG in LEBs, bridging the EPG, and realising LEBs effectively.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3000,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Renewable and Sustainable Energy Reviews","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1364032124004271","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Low-energy buildings (LEBs) play an important role in improving energy efficiency, reducing energy use, and mitigating carbon emissions to achieve the 2050 global decarbonisation target. However, increasing evidence indicates that energy performance gap (EPG), defined as the difference between predicted and actual energy performance, significantly inhibits the successful delivery of LEBs. This study aims to systematically examine EPG in the context of LEBs using the combination of the methods of literature review and meta-analysis with 76 carefully selected cases of LEBs from previous studies. Drawing on the dialectical system theory, the study develops a novel dialectical system framework to ensure the systematicity and comprehensiveness of the examination of EPG in LEBs. A new life cycle–human–technology–organisation framework is also established to clarify the complex causes of the EPG. The findings reveal that EPG in LEBs ranges from −86 % to +483 % with an average of +58 %. More than 80 % of the LEBs have a positive gap that their actual energy consumption is greater than their predicted energy consumption. It is found that technology-related and human-related causes of EPG have been popularly investigated, but organisation-related causes have been far inadequately explored. A roadmap for pursuing zero-energy gap is proposed to promote the successful delivery of LEBs. Knowledge gaps are identified, which point future research directions for achieving a systematic understanding of EPG in LEBs, bridging the EPG, and realising LEBs effectively.
期刊介绍:
The mission of Renewable and Sustainable Energy Reviews is to disseminate the most compelling and pertinent critical insights in renewable and sustainable energy, fostering collaboration among the research community, private sector, and policy and decision makers. The journal aims to exchange challenges, solutions, innovative concepts, and technologies, contributing to sustainable development, the transition to a low-carbon future, and the attainment of emissions targets outlined by the United Nations Framework Convention on Climate Change.
Renewable and Sustainable Energy Reviews publishes a diverse range of content, including review papers, original research, case studies, and analyses of new technologies, all featuring a substantial review component such as critique, comparison, or analysis. Introducing a distinctive paper type, Expert Insights, the journal presents commissioned mini-reviews authored by field leaders, addressing topics of significant interest. Case studies undergo consideration only if they showcase the work's applicability to other regions or contribute valuable insights to the broader field of renewable and sustainable energy. Notably, a bibliographic or literature review lacking critical analysis is deemed unsuitable for publication.