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MONDAY, JUNE 16, 2025
Rising airline emissions could trigger global caps as early as 2024 - trade group

World+Biz

Reuters
20 March, 2023, 04:25 pm
Last modified: 20 March, 2023, 04:31 pm

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Rising airline emissions could trigger global caps as early as 2024 - trade group

Reuters
20 March, 2023, 04:25 pm
Last modified: 20 March, 2023, 04:31 pm
FILE PHOTO: Rolls Royce Trent XWB engines, designed specifically for the Airbus A350 family of aircraft, are seen on the assembly line at the Rolls Royce factory in Derby, November 30, 2016. REUTERS/Paul Ellis/Pool/File Photo
FILE PHOTO: Rolls Royce Trent XWB engines, designed specifically for the Airbus A350 family of aircraft, are seen on the assembly line at the Rolls Royce factory in Derby, November 30, 2016. REUTERS/Paul Ellis/Pool/File Photo

Rising airline traffic is expected to trigger global emissions-related requirements as early as next year according to a top airline trade group even as debate broadens on the effectiveness of that approach.

A United Nations-led scheme seeks to cap emissions from international flights at 85% of 2019 levels under the first phase of its Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) beginning next year.

Combating aviation pollution is key for the fight against climate change as the industry generates roughly 3% of global emissions. As traffic rebounds from a Covid-19 pandemic-induced slump, some travellers are reviving "flight shaming" pressure to seek lower carbon alternatives.

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With technologies like electric and hydrogen-powered aircraft still unproven, and sustainable aviation fuel (SAF) in short supply and exorbitantly costly, airlines are buying credits in pollution-lowering projects like planting trees to offset their emissions.

However, while offsets cost less than SAF, critics say they do not lower actual airline emissions, which is key to the industry's environmental goals.

Carbon offsets

Carriers could start purchasing carbon offsets as early as next year to meet emissions obligations under CORSIA, as international traffic rebounds near 2019 levels, IATA told Reuters.

Airlines currently buy carbon credits voluntarily. Under CORSIA, carriers from more than 100 participating countries would have to offset rising emissions above the baseline of 85% of 2019 levels.

IATA's projections, based on expected traffic recovery, had not previously been public.

Offsetting amounts, which depend on traffic, are not yet clear. The US Federal Aviation Administration said requirements during CORSIA's first phase will only be calculated in 2026, though IATA said airlines can start buying credits earlier.

CORSIA was approved in 2016 by the UN International Civil Aviation Organisation's (ICAO) assembly. ICAO cannot impose rules on governments but its 193 member countries overwhelmingly adopt its standards.

Although CORSIA's first phase is voluntary, airlines from participating countries like the US must follow it.

IATA and major airlines support CORSIA, which avoids a patchwork of regional emission rules that could raise costs, but some executives have criticised offsets.

United Airlines CEO Scott Kirby has dubbed them "greenwashing" and called for end of their use, estimating that planting trees on every acre of available land would address less than five months of emissions. Instead, he wants the industry to focus on SAF, innovations like electric aircraft and carbon sequestration.

"For an airline, it makes absolutely no sense to buy expensive SAF when it can actually buy cheap offsets instead," said Jo Dardenne, aviation director for Brussels-based Transport & Environment.

SAF is produced in tiny quantities from feedstocks such as cooking oils and animal waste and cost two to five times more than conventional jet fuels. Ramping up production and making it commercially viable would require massive investment, such as government incentives including tax credits.

Global SAF production is estimated to meet just 2% of global aviation's fuel needs by 2025, according to IATA.

"Many airlines would prefer to reduce their offsetting requirements by reporting SAF use, but governments largely haven't done their part to help make any more SAF available – even where they have imposed mandates," IATA said.

Carriers like Easy Jet have moved away from offsets and United still targets net-zero carbon emissions by 2050 without relying on traditional offsets by primarily betting on SAF. But, as of last December, the total volume of SAF used in its operations remained less than 0.1% of its total aviation fuel usage.

Carbon credits certified under the UN plan "will be necessary," Sara Bogdan, head of Sustainability and ESG at JetBlue Airways, told Reuters.

ICAO argues CORSIA's integrity exceeds other offsetting initiatives since governments in consultation with environmental protection groups developed its criteria.

JetBlue is relying on more SAF and fuel efficient aircraft to reduce emissions. It has offset more than 11 million metric tons of emissions through 2022.

A metric ton of carbon reduction through offsets costs about $10 to $15 versus about $200 through SAF, United chief sustainability officer Lauren Riley said.

"The economics are tough," she told Reuters.

Airline / Carbon emission

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