Small Emitters Tool (SET)

The Small Emitters Tool (SET) makes it possible to estimate the fuel burn for an entire flight considering the characteristics of the air traffic covered by the EU Emissions Trading Scheme (EU ETS). The SET has been validated by the European Commission tool supporting the Emissions Trading Scheme.

The SET cannot estimate CO2 emissions for specific phases of the flight (landing or cruise) or other emissions (NOX, etc.). Other EUROCONTROL tools can be used for that purpose, such as AEM (Advanced Emission Model).

The SET is updated on a regular basis in order to make it as accurate as possible. Different versions of the tool are available depending on the year the flight was operated.

Versions of the tool available for download

For 2018 traffic emissions version 5.08 dated 2018.11.26, to be used for flights operated in 2018 New samples for Airbus A-321neo (A21N) and new “equivalent” models for A19N,A20N, new samples for Boeing 737 MAX 8 (B38M) and new equivalent model for B37M, new samples for Embraer 195. 
For 2017 traffic emissions version 5.07 dated 2017.11.22, to be used for flights operated in 2017 Calibration of fuel burn and CO2 models for many types using new samples in particular A359, B788, B789.
For 2016 traffic emissions version 5.06 dated 2016.11.10, to be used for flights operated in 2016 No new samples, but recent aircraft types are now modelled as regression models, i.e. based on already existing types which are based on samples  (new types like BCS1, BCS3, C68A, E545, FA8X, GA5C, H160, PC24 and SOL2 as well as F35 and BLCF).
For 2015 traffic emissions version 5.05 dated 2015.12.26, to be used for flights operated in 2015 Calibration of fuel burn and CO2 models for most existing Aircraft types using 2014 and 2015 actual fuel burn data collected from Aircraft Operators.
It is very important that aircraft operators (AOs), as small emitters (for their simplified monitoring procedure and reporting) or regular operators (when reporting data gaps) use only the relevant version for each reporting period.

This requirement is the only way to ensure a smooth processing of AOs' reported data by   your verifiers (if any) but also by your administering States.

How we help

We, at EUROCONTROL, introduced the SET as a solution to meeting the requirements of the guidelines established by Decision 2007/589/EC in respect of the approach based on:

  • individual flights and aircraft type used (as per ICAO doc 8643);
  • actual route length; and
  • statistically sound fuel-consumption relationships.

According to European Commission Decision 2007/589/EC, amended by Decision 2009/339/EC, a simplified method for EU ETS monitoring and reporting purposes can be used to determine fuel consumption and carbon-dioxide emissions.

The SET is an algorithm in essence that is available in a standalone version (in Excel format for manual entry and usage) but it is also a part of the code within the ETS Support Facility, a comprehensive integrated solution with individual flight database records designed for ETS follow-up and compliance to support aircraft operators, verifiers, service companies acting on behalf of aircraft operators, and ETS competent authorities.

Who we can help

The following tool versions can be used by:

  • aircraft operators that are “small emitters” (see definition in EC regulations related to ETS), with regard to their monitoring and reporting obligations pursuant to Article 14(3) of Directive 2003/87/EC (the EU ETS Directive) and Part 4 of Annex XIV to Decision 2007/589/EC (the monitoring and reporting guidance);
  • all aircraft operators pursuant to Part 5 of Annex XIV to Decision 2007/589/EC for the purposes of estimating the fuel consumption of particular flights covered by the EU ETS, where the data necessary to monitor the emissions of carbon dioxide are missing as a result of circumstances beyond the control of the aircraft operator and which cannot be determined by an alternative method defined in the operator’s monitoring plan (data gaps).

Instant delivery

If you wish to receive each release of the tool by email, please fill in the form.


Please contact us: 

  • to receive previous versions of the SET applicable to past years (2012, 2011, 2010); 
  • to obtain more information on the SET and its use;
  • to report any problems with the use of the SET;
  • should you wish to provide actual fuel burn data to help improve the accuracy of the SET.

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Antonio Astorino

Environment Expert
96, rue de la Fusée
1130 Brussels
+32 2 729 33 74