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IEA EBC Annex 57 - Subtask 4 report

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IEA EBC Annex 57 - Subtask 4: Case studies and recommendations for the reduction of embodied energy and embodied greenhouse gas emissions from buildings


This report is one of the deliverables of the International Energy Agency Energy in Buildings and Communities programme (IEA EBC) Annex 57: “Evaluation of embodied energy (eE) and carbon dioxide equivalent emissions (CO2eq) for building construction”. The document was developed by Subtask 4 (ST4) of the annex, aiming to identify and define measures to design and construct buildings with lower embodied energy and greenhouse gas emissions (EEG).


ST4 collected and analysed a large number of case studies from the wider Annex 57 group, the majority quantitative but with the addition of some providing qualitative information. These have been inserted using a specially designed template format conceived to enable transparency and accurate comparisons between cases: the full collection of these completed templates is included in the accompanying Annex 57 report: "Case studies demonstrating Embodied Energy and Embodied Greenhouse gas Emissions in buildings". Supplementary data was collected through surveys and discussions with the Annex 57 participants, and through discrete literature reviews.


Four different levels of analysis were used to assess the impacts of methodology on the numerical results, the range and average values for impacts of different life cycle stages, components and building typologies, potential design and construction strategies for reducing EEG, and the influence of decision-making contexts on measuring and reducing EEG in buildings. 


For further information or to download the report, please visit the relevant IEA-EBC Annex 57 webpage at the link provided below.