In the illustrative compliance scenarios analyzed, the average emissions rate of the source
types included in the calculation of the state goals must be, on average, less than or equal to the
proposed goals over the entire compliance period. That is, the CO2 emission rate constraints
imposed to represent the state goals are applied only to the sources whose generation was
originally included in the calculation of the state goals being analyzed. Electricity savings (in
megawatt-hours avoided) from assumed improvements in demand-side energy efficiency are also
incorporated, in the same manner as zero-emitting generation is incorporated, into the average
emission rates that must not exceed the CO2 emission rate constraints.