Airliners powered by sustainable fuel remain a distant goal

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LONDON - One day late in 2023, an almost-empty commercial airliner is expected to lift off on a trans-Atlantic flight between Britain and the United States that Prime Minister Boris Johnson casts as

a once-in-a-generation breakthrough for aviation and the battle against climate change.

The flight will be powered solely by sustainable aviation fuel or SAF, jet fuel that is made from greener processes and raw materials that range from cooking oil, solid waste and crop residue to synthetic kerosene made from hydrogen and recycled carbon. And for the flight to signal a true change in the effect of air travel on the environment, the production of sustainable aviation fuels would have to ramp up to levels that are extremely ambitious and distant, goals requiring an enormous investment in production and infrastructure by fuel manufacturers.

The International Air Transport Association industry group has laid out a hugely optimistic pathway to net-zero aviation in 2050 under which 65 per cent of the anticipated emission reductions would come from the use of sustainable fuel. That would require an exponential expansion of the fuel's production and investments in refineries estimated at trillions of dollars.

The spokesman acknowledged last week that the 2025 output was now likely to fall short, reaching 5 billion litres, but insisted that the transport association still believed the 2050 target of more than 3,700 times this year's output remained achievable"with appropriate government policy support". Phillips 66, based in Texas, says its Humber plant can produce about 25 million litres a year, with plans to increase that to more than 66 million litres by 2025.

 

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