Integrating climate change and energy mix scenarios in LCA of buildings and districts

Charlotte Roux, Patrick Schalbart, Edi Assoumou and Bruno Peuportier

Applied Energy, 2016, vol. 184, issue C, 619-629

Abstract: The objective of this study is to evaluate life cycle impacts of buildings, integrating climate change (RCP 4.5 and RCP 8.5 IPCC scenarios) and evolution of the energy mix on the long term (at 2050). Two methodological approaches were developed following the modelling principles of attributional and consequential life cycle assessment (LCA). The methodology is illustrated using a simple case study: a low-energy single family house located in France. Two design options were evaluated using life cycle assessment: the choice of a heating system and the integration of photovoltaic (PV) modules on the roof. Using an attributional approach and compared to a static LCA considering no prospective parameters, the carbon footprint of the house (total life cycle) varies from +21% to +43% for the electric heating alternative, −7% to +4% for the gas boiler alternative, −6% to +15% for the PV alternative depending on climate change intensity and evolution of the energy mix. Figures using the consequential approach have a larger magnitude of variation from −36% to −13% for the electric heating alternative, 0 to +16% for the gas boiler alternative and −14% to +1% for the PV alternative compared to a static LCA. Accounting for climate change and the evolution of the energy system has a large influence on LCA results.

Keywords: Prospective assessment; Life cycle assessment; Buildings; Climate change; Energy system model (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (25)

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DOI: 10.1016/j.apenergy.2016.10.043

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