This certification assesses airports' efforts to measure and reduce their greenhouse gas emissions. Paris-Orly has achieved a 92% reduction in activities directly managed by Groupe ADP, including the operation of its buildings, equipment, and vehicles, as well as purchased energy (so-called 'scope 1' and 'scope 2' emissions). To attain Level 5, an airport must reduce these emissions by at least 90% and balance the remaining emissions through carbon removal mechanisms, signifying 'net-zero emissions'.
These advancements are based on concrete improvements: modernization of equipment and lighting, adjustments to heating, air conditioning, and ventilation. In 2025, Paris-Orly consumed approximately 16% less electricity and 35% less heat compared to 2019. Concurrently, the airport has evolved its energy sources: 87% of the heat consumed was from renewable sources in 2025, thanks to geothermal energy, heat pumps, recovery of 'waste' heat, and biomethane.
The initiative also extends to vehicles, with the gradual replacement of internal combustion engine models by electric vehicles, and the use of lower-carbon footprint fuels for certain specialized equipment. Renovation work on runway 4 aims to recycle nearly 90% of materials from demolition.
Beyond its own operations, Paris-Orly aims for net-zero emissions by 2050 for all emissions related to its activity, including those from airlines, suppliers, and passenger and employee travel (known as 'scope 3'). The airport is collaborating with its partners on levers such as sustainable aviation fuels, limiting aircraft ground fuel consumption, and facilitating public transport access.
