The revised CO2 Act entered into force on 1st January 2025. It provides new implementation elements for the aviation sector that have been detailed by the Federal Council through the ordinance on CO2. This determines among other considerations, the blending mandate for sustainable aviation fuels. It requests the fuel suppliers on the national airports of Geneva and Zürich to mix sustainable fuels to kerozene whereas the aircraft operators have to report the sustainable fuels uploaded at these airports. These new obligations shall enter into force in principle on 1st January 2026. Switzerland intends to adopt the blending mandate through the bilateral agreement on aviation with the EU and to implement it with corresponding rules to those of the EU.
Switzerland encourages also measures to reduce greenhouse gas emissions, for example by supportimg sustainable fuel production. This is done through an incentive programme ‘Aviation and Climate’. This programme is still under development. More information will be available during the year. The CO2 Ordinance provides the legal principles for this incentive programme. Furthermore, whoever proposes travel by flying will have to provide information on the climate relevant emissions from each flight.
The revised ordinance also adapts the ETS (Emission trading system) provisions in consistency with the EU.
For questions regarding the blending mandate and the rules of ReFuelEU Aviation please contact: saf-quota@bazl.admin.ch
For questions regarding the incentive programme Aviation and Climate please contact: foerderung-klima@bazl.admin.ch
