The opening day of the 2021 ICAO Green Airports Seminar will bring together stakeholders to discuss the latest sustainability concepts associated with airports, focusing on the achievements in reducing the environmental impact of airports and the global key environmental management trends. Stakeholders will also discuss innovations in clean energy that will be crucial to the future of aviation. This will elaborate on the acceleration of the clean energy transition through the latest innovations at airports including clean energy technology, operational measures, upcoming challenges and future opportunities.