Global aviation activity is continuing to grow rapidly
CO2 emissions from aviation continue to rise, and accounted for around 2.5% of global energy-related CO2 emissions in 2018. While energy efficiency in aviation improved by 3.2% per year between 2000 and 2014, it slowed to less than 1% per year between 2014 and 2016. In the Sustainable Development Scenario, aviation energy efficiency needs to improve by more than 3% per year to 2040. With global aviation activity continuing to grow rapidly (+140% since 2000), further international policy measures, such as more stringent carbon pricing and efficiency standards, could help put aviation on track.