09.03.2020 - v0.8.78 Normalisation & Weighting

In this update we have added Normalisation and weighting to our impact settings. Methods like ReCiPe, CML, TRACI, and Environmental Prices have normalisation and or weighting sets available. By normalising your results you relate it to a reference value for this impact category. This normalisation factor expresses the total impact in a reference region within a reference year. 

Weighting is a step where your (normalised) results are multiplied with a weighting factor. The values for each impact category now have the same unit, for example points or euro, and can be added up in one single score that reflects the environmental impact of a product or service. This single score makes it easier to compare products by taking into account multiple indicators in one value. 

An often used weighting set is the Dutch Milieukosten indicator (MKI) which is the shadow price of a product. The SBK method that provides this weighting set will become available in the next release. 

Below you can find some examples of how to use the Normalisation and weighting settings. 

Normalisation and Weighting are an optional step in Life cycle assessment:

ReCiPe 2016 Endpoint (H)

With normalisation and weighting set "World (2010) H/H" summed up in one Single score



CML-IA baseline

With normalisation set "EU25" and impact category Global warming


Environmental Prices, CE Delft

With weigthing set "Dutch Environmental Prices 2015" and impact category Climate change