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If you include an EnvironmentalImpactFactors object as well as appropriate FuelFactors objects several new output variables will be available to you and will be shown in the .MDD file including:
Zone,Meter,Source:Facility [J]
Search the .MDD file for the word "source" and you should see one for each type of energy used. You can then define a Output:Meter object similar to and Output:Variable object.