The International Air Transport Association has announced significant growth in its Supporting Alliance for CORSIA Eligible Emissions Unit Supply, bringing together governments, airlines and carbon market stakeholders to accelerate aviation decarbonisation.

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IATA expands CORSIA carbon alliance

The International Air Transport Association (IATA) has announced that membership of its Supporting Alliance for CORSIA Eligible Emissions Unit (EEU) Supply has grown to 50 participating organisations and governments, marking an important milestone for the aviation industry’s global carbon reduction efforts.

The latest expansion includes the governments of Guyana, Madagascar, the United Kingdom, Zambia and Zimbabwe, which have signed the Aviation Carbon Market Compact and joined the alliance. Peru has also expressed interest in participating in the initiative.

Several major organisations from across the carbon market ecosystem have also joined the programme, including the International Emissions Trading Association (IETA), the Verified Carbon Market Collaborative, data partner Sylvera and aerospace manufacturer Airbus.

Supporting aviation decarbonisation

The alliance was established to help increase the availability of high-quality emissions units that airlines can use under the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA).

CORSIA was developed by the International Civil Aviation Organisation as a global market-based mechanism to address carbon emissions from international aviation. Industry forecasts indicate demand for CORSIA-eligible emissions units could reach between 225 million and 250 million units by spring 2027.

To support this requirement, alliance members are working together to expand the supply of eligible credits through technical assistance, policy support and collaboration with participating governments.

The initiative also seeks to improve access to carbon markets and climate finance while helping countries align carbon credit programmes with Nationally Determined Contributions under the United Nations Framework Convention on Climate Change.

Governments and industry strengthen collaboration

Marie Owens Thomsen, IATA Senior Vice President Sustainability and Chief Economist, said the growing participation demonstrates strong commitment across governments and industry stakeholders.

She said: “The engagement of the governments of Guyana, Madagascar, the United Kingdom, Zambia, and Zimbabwe, as well as the support provided by our partners from across the entire carbon market value chain, shows strong and shared commitment to strengthening the link between market demand and the policy frameworks.”

She added: “The CORSIA Supporting Alliance demonstrates tremendous determination across the full spectrum of market participants to work together. We need to ensure that EEUs can be brought to market with the speed and scale required.”

Broad industry participation

The alliance now includes a wide range of participants from across the aviation and carbon market sectors.

Airline members include Air France-KLM, All Nippon Airways, Austrian Airlines, China Airlines, Egyptair, International Airlines Group, Japan Airlines, Lufthansa Group, Pegasus Airlines, Qatar Airways, Singapore Airlines and SWISS.

Industry organisations, project developers, carbon market specialists and technology partners are also contributing expertise aimed at supporting the effective implementation of CORSIA as international aviation continues its transition towards net-zero emissions.