Units of measurements (“units”) for ESG metrics differ across reports. There is a need to normalise units to facilitate comparison by converting units and deriving data.

A simple illustration of this issue is one use of energy being measured in GJ (Gigajoules) and another in TJ (Terajoules). How to plot both of these on the same chart?

A more complicated example is one use being measured in GJ (Gigajoules) and another in MWd (Megawatt-days). How to plot both of these on the same chart?


Companies may report their breakdown of renewable and non-renewable energy usage either as a percentage of the total or an absolute amount in an energy unit. For example, one company (CarMaker) may report using both mechanisms:

Whereas a different company (Cloudify) may just report using one mechanism (percentages):

And a third company (OutSourcery) may report using the other mechanism (absolute values):

A taxonomy could constrain which variant is used but that might prevent some participants reporting in the way most natural to them. Alternately, one can unify all the above during analysis, by calculating derived values where they are missing, as seen below:


·Sample Taxonomy / Reports

·Comparing Absolute and Percentage Values (using Tableau)

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