Consequential Lca Discussion Forum This is a collection of examples illustrating how to model consequential product systems in life cycle assessment (lca) as it is recommended in the iso 14040 series. It presents the main features of two alternative approaches used in lca attributional and consequential and describes how consequential lca can be performed consistently and appropriately, with an example provided to guide practitioners.
Picture 1 Consequential Lca A particular prominent subject of debate is the difference between attributional lca (alca) and consequential lca (clca). these types will be explained further on in the text as part of our study. Attributional or consequential life cycle assessment? understand the difference between alca and clca to choose the right method for your goals. Lca is a systematic method for evaluating ghg emissions and other environmental impacts of a product’s life cycle, from raw material extraction to disposal. adhering to iso 14040 and iso 14044 standards ensures consistency and credibility in lca processes. A consequential lca (clca) gives an estimate of how the global environmental burdens are affected by the production and use of the product. the distinction arose to resolve debates on what input data to use in an lca and how to deal with allocation problems.
Image Consequential Lca Lca is a systematic method for evaluating ghg emissions and other environmental impacts of a product’s life cycle, from raw material extraction to disposal. adhering to iso 14040 and iso 14044 standards ensures consistency and credibility in lca processes. A consequential lca (clca) gives an estimate of how the global environmental burdens are affected by the production and use of the product. the distinction arose to resolve debates on what input data to use in an lca and how to deal with allocation problems. Consequential lca estimates the environmental consequences of decisions. instead of asking “what impacts does this product have”, it asks “what changes if we make or don’t make this product”. this approach models how markets respond to changes. This series on consequential modelling is part of an on going effort to provide the lca community with freely available education materials on very specific. Tributional lca (alca) modeling. in order to incorporate possible consequences, consequential lca models include additional economic data like marginal production costs, elasticity of supply. There are two main types: attributional lca (alca), which assesses the global impact share of a product's life cycle, and consequential lca (clca), which evaluates the consequential impact of a decision.
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