Operational Emissions: define "consequential approach"

[dschien]

Related to this: Justify mandating marginal emissions rates as a result from a consequential approach

[dschien]

Also rephrase "The marginal emissions rate reflects the change in emissions associcated with a change in demand." What change of demand?

[atg-abhishek]

cc @Henry-WattTime something to be considered for inclusion in-line?