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ICAO establishes 2050 net-zero CO2 emission goal for international aviation

The International Civil Aviation Organization (ICAO) has established a 2050 net-zero carbon dioxide emission goal for international aviation. That agreement came at the ICAO 41st Assembly in Montreal after almost a decade of negotiations, and reflects increased urgency to align aviation with the Paris Agreement.

Previous ICAO negotiations have focused on offsetting emissions growth above a 2020 baseline. The new decision will require significant reductions in CO2 from aircraft and fuels themselves, supported by large private and public investments. Furthermore, because ICAO itself has little implementation authority, the agreement empowers member states to take the lead in regulating emissions.

The agreement is exciting, in part because ICAO has stopped pretending to be a global climate cop. To get to net-zero in 2050, we’ll need to peak emissions as soon as 2025, with richer countries taking the lead.

—Dan Rutherford, Aviation Director of the International Council on Clean Transportation (ICCT)

Countries will develop national measures to cut emissions consistent with ICAO’s goal. Europe is expected to lead through proposals under its “Fit for 55” package, including clean fuel mandates, carbon pricing, and ending tax exemptions for jet fuel.

In the United States, the federal government aims to produce 3 billion gallons of SAF by 2030, supported by subsidies of up to $1.75/gallon under the “Inflation Reduction Act”. California is moving to require the use of sustainable aviation fuels (SAFs) under its Low Carbon Fuel Standard (LCFS).

ICAO’s agreement does not assign targets to states, meaning that neither specific countries nor carriers will have a direct obligation to reduce emissions. Instead, countries will establish policies and measures to cut aviation CO2.

Emerging economies with fast growing carriers, notably India and China, have argued that their carriers would require until 2060 and 2070, respectively, to achieve net zero emissions. That would imply the need for richer countries to reduce emissions even faster.

To build room for poorer countries to grow their aviation sectors, richer countries will need to peak emissions even faster. So the world will be looking for quick action from wealthier governments like the EU, US, Singapore, and the United Arab Emirates.

—Dan Rutherford



This is a good way of regulating without regulating. The countries that go with this standard will demand that incoming flights must meet the standard. Soon all airlines that want international travel will have to follow.

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