Document ID: chunk:federal_register_of_legislation:F2015L00161:reg:17
Version: federal_register_of_legislation:F2015L00161
Segment Type: reg
Provision Reference: reg 17
Character Range: 13418–15185

17  Summary

      In this method, abatement is calculated for individual phases of aircraft operation for individual aircraft and then aggregated.
      Abatement from each phase is calculated as a reduction in emissions intensity, where emissions intensity is the emissions per service unit. The service units allowed depend on the phase, and may be chosen to correspond with the project activity, for example as emissions per passenger kilometre or emissions per route.
      For an individual aircraft on a particular phase, the emissions intensity is not expected to improve over time in the absence of the project.
      If route is chosen as the service unit, baseline emissions for the phase for the route is set as the average historic emissions for the phase for the route multiplied by the number of times that route was flown in the project.
      If hours using alternative energy source is chosen as the service unit, baseline emissions for the phase for the route is set as the historic emissions per hour for the baseline energy source. The baseline emissions is the baseline emissions intensity multiplied by the hours using the new energy source in the project.
      If any other service unit is selected, the baseline emissions is set as the historic emissions per service unit of the phase on a route prior to the abatement activity being undertaken. The baseline emissions is the baseline emissions intensity multiplied by the project quantity of services on the phase on the route.
      The abatement for the phase is the baseline emissions minus the project emissions. The abatement for an aircraft is the sum of abatement across all its phases in a reporting period. Where this results in negative abatement, the abatement is set as zero.