The small emitters tool (SET) makes it possible to estimate the fuel burn and associated CO2 emissions for an entire flight considering the characteristics of the air traffic covered by the EU emissions trading scheme (EU ETS).
The SET internal aircraft type fuel burn and emissions models are built on a statistical approach based on fuel burn samples of real life flights operations. As a consequence, although the tool might compute estimated values (fuel and CO2) that can be different from those of ONE single flight in the real life (with its specific PAX, wind conditions, ATC delays, cost index, aircraft sub type variant…), it will anyway provide a very accurate estimated TOTAL fuel and associated CO2 emissions for a LIST of flights, with one or more aircraft type (mixed fleet), due to the averaging principle.