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Embodied GHG emissions of buildings - Critical reflection of benchmark comparison and in-depth analysis of drivers

Röck, M.; Balouktsi, Maria; Saade, M. R. M.; Rasmussen, F. N.; Hoxha, E.; Birgisdottir, H.; Frischknecht, R.; Habert, G.; Passer, A.; Lützkendorf, Thomas

Abstract:
In the face of the unfolding climate crisis, the role and importance of reducing Greenhouse gas (GHG) emissions from the building sector is increasing. This study investigates the global trends of GHG emissions occurring across the life cycle of buildings by systematically compiling life cycle assessment (LCA) studies and analysing more than 650 building cases. Based on the data extracted from these LCA studies, the influence of features related to LCA methodology and building design is analysed. Results show that embodied GHG emissions, which mainly arise from manufacturing and processing of building materials, are dominating life cycle emissions of new, advanced buildings. Analysis of GHG emissions at the time of occurrence, shows the upfront 'carbon spike' and emphasises the need to address and reduce the GHG 'investment' for new buildings. Comparing the results with existing life cycle-related benchmarks, we find only a small number of cases meeting the benchmark. Critically reflecting on the benchmark comparison, an in-depth analysis reveals different reasons for cases achieving the benchmark. While one would expect that different building design strategies and material choices lead to high or low embodied GHG emissions, the results mainly correlate with decisions related to LCA methodology, i.e. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000128689
Veröffentlicht am 18.01.2021
Originalveröffentlichung
DOI: 10.1088/1755-1315/588/3/032048
Cover der Publikation
Zugehörige Institution(en) am KIT Ökonomie und Ökologie des Wohnungsbaus (OEW)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1755-1307
KITopen-ID: 1000128689
Erschienen in WSBE 20 - World Sustainable Built Environment - Beyond2020 2-4 November 2020, Gothenburg, Sweden
Veranstaltung BEYOND – World Sustainable Built Environment Conference (2020), Online, 02.11.2020 – 04.11.2020
Verlag IOP Publishing
Seiten Art.-Nr.: 032048
Serie IOP Conference Series: Earth and Environmental Science ; 588
Bemerkung zur Veröffentlichung Die Veranstaltung fand wegen der Corona-Pandemie als Online-Event statt
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