Article 1 Subject matter
This Regulation lays down rules for the following:
(i) from 1 January 2021 and subsequent trading periods, monitoring and reporting of greenhouse gas emissions and activity data pursuant to Directive 2003/87/EC in the trading period of the Union emissions trading system;
(ii) from 1 January 2025, monitoring and reporting of non-CO2 aviation effects pursuant to Article 14 of Directive 2003/87/EC.