In October 2016, the general assembly of the ICAO confirmed the objective of targeting CO2-neutral growth as of 2020, and for this purpose decided to introduce a global market-based measure for compensating CO2 emissions above that level, namely Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA).
In June 2018, the ICAO Council adopted a new Annex 16 Volume IV to the Chicago Convention as well as the Implementing Elements and the Environment Technical Manual Volume IV, DOC 9501. Therefore, the basis for the implementation of the new Standard from 1.1.2019 is set.
From this date, the aeroplane operators of all the ICAO member states (incl. Switzerland) who emits more than 10'000 tonnes of CO2 per year on their international flights will have to monitor the CO2 emissions of these flights and present them in a report to the competent authority. From 2021, the aeroplane operators will have to compensate for a part of their CO2 emissions by purchasing and cancelling CO2 emission units.
How the EU intends to integrate aviation into the ETS after 2020 and how a potential interaction with CORSIA could be structured has yet to be decided.