Monitoring methododology for CO2 emissions for ETS aviation
Aircraft operators determine their CO2 emissions on the basis of fuel measurements and invoices. Aircraft operators with low emissions (CO2 emissions of less than 25,000 tonnes per year) may estimate their emissions in a simplified way.
Formula for calculating CO2 emissions
CO2 emissions are determined by applying the following formula for each flight:
CO2 emission = fuel consumption x emission factor
The aircraft operator determines fuel consumption (in tonnes) on the basis of fuel measurements in the aircraft and fuel invoices. The emission factors (t CO2/t fuel) are determined for different standard aviation fuels by the European Commission.
Monitoring by small emitters
Aircraft operators with low emissions (total emissions of less than 25,000 tonnes of CO2 per year, or fewer than 243 flights per 4-month period for 3 consecutive 4-month periods) may estimate their emissions in a simplified way. They can estimate their fuel consumption and CO2 emissions on the basis of their own flight data using Eurocontrol’s small emitter tool. This tool is based on statistical information which relates fuel consumption to the distance travelled. In addition, they may use the emissions report from Eurocontrol’s ETS Support Facility. That way, Eurocontrol flight data is combined with fuel estimates from the small emitter tool. It is not necessary to have the ETS Support Facility emissions report verified.