No, the DistrictCooling (and DistrictHeating) objects don't have fields for efficiency, so you could post-process the energy use to account for that. See the add Efficiency field to DistrictCooling and DistrictHeating EnergyPlus feature request and give it a thumbs up if you agree.

The EnvironmentalImpactFactors class is wrapped in OpenStudio so you could try using that in an OpenStudio Measure.