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Supporting the world’s airports on their decarbonization journey

Helping close to 2,000 airports around the globe commit to an ambitious decarbonization target

global airports adopt shared net-zero goal
Mt of CO2 potentially abated or reduced between 2022–2050

The 2015 Paris Agreement committed to limiting the average global temperature increase to 2°C above pre-industrial levels, with a further aspiration to limit increases to 1.5°C. To achieve this long-term temperature goal, countries aim to peak global greenhouse gas emissions as soon as possible in order to reach a climate neutral world by mid-century. Aviation is a particularly challenging sector to decarbonize; as a result, its share of global emissions is set to increase as air traffic grows and other sectors decarbonize.

ACI logo


With almost 2,000 airport members in 183 countries, Airports Council International (ACI) decided to take concrete action with a firm commitment on emissions. ACI wanted to develop a long-term goal for the global airport sector to reduce carbon emissions by 2050.


Along with our partner, Airbiz, we led an 18-month study that included comprehensive global data collection and membership analysis. This helped us establish the 2010 and 2019 baseline for emission reduction pathways, consistent with various IPCC global warming scenarios.

Using robust statistical methods and defined scenarios, we also projected a range of future emissions for the sector. We investigated and projected all current and foreseen emission reduction measures on a regional basis in order to identify the most appropriate long-term global goal. We then led an extensive consultation with ACI regions and airport members to ensure widespread acceptance and buy-in of the final goal.

“We selected ICF from amongst our ACI World Business Partners because of their breadth and depth of expertise. We were pleased to work with them collaboratively every step of the way on the study, and the final report has provided a solid foundation that will support our member airports along their decarbonization journey. Net zero by 2050 can become a reality.” 

Michael Rossell
Senior Vice President International Relations and Corporate Secretary, Airports Council International - ACI World


In a pioneering moment for the industry, ACI announced in June 2021 that its global airports would commit to work towards net-zero emissions by 2050—resulting in 260M Mt of CO2 potentially abated or reduced.

Our support of implementation efforts is ongoing. For example, we provide a comprehensive list of practical implementation actions to assist member airports on their decarbonization journey. Our team considers the different resources and considerations available to each airport as we advise on how to work towards achieving this goal.

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