Resource Efficiency – what are the Objectives?
This paper shows that resource efficiency pursues the three objectives reducing environmental impacts, improving supply security and saving costs. Firstly, a differentiation is established between objectives and measures to achieve them. Secondly, methods to assess improvements relating to these objectives are discussed and applied to the case study of vehicle lightweight design. The presented example of substitution of steel by aluminum illustrates that trade-off between objectives may occur. Thus, a reliable assessment of measures to enhance resource efficiency must consider impacts on each objective separately. An aggregation to only one resource efficiency indicator lacks transparency and is not appropriate.
KeywordsResource Efficiency Life Cycle Assessment Methodology
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