Allowances will be portioned to a facility based on a certain standard of baseline heat input values of affected EGUs at the facility, as relative to total baseline heat input of all EGUs in that zone in which the facility resides. 
Allowances will be allocated to a facility in a given zone in proportion to the sum of the baseline heat input values of affected EGUs at the facility as compared to the total baseline heat input of all affected EGUs in the respective zone.