UK’s flights set to be greener as SAF Mandate comes into effect

05 / 01 / 2025

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Flights are set to be greener as the UK’s ambitious Sustainable Aviation Fuel (SAF) Mandate officially comes into force as of January 2025.

SAF is made from sustainable sources, such as materials like household waste or used cooking oil and produces an average of 70% less carbon emissions than traditional fossil-based aviation fuel.

By law, this type of fuel must now make up at least 2% of all jet fuel in flights taking off from the UK from 2025, growing year-on-year to 10% by 2030 and 22% by 2040.

These ambitious but achievable targets should see around 1.2 million tons of  SAF supplied to the UK airline industry each year by 2030 – enough to circle the globe 3,000 times.

Being one of the first countries in the world to sign the mandate into law, the UK is at the forefront of decarbonizing air travel and is helping to kickstart the government’s Plan for Change.

Together with the other actions we are taking to grow a UK SAF industry, it will support thousands of skilled jobs in every part of the country, deliver economic growth and help make the UK a clean energy superpower.

Minister for Aviation, Mike Kane, said “From this moment on, aviation will be a greener, more sustainable form of travel and today marks a significant milestone for the UK SAF industry.”

“With thousands of jobs supporting the UK SAF industry and flying becoming popular than ever, the mandate will help deliver our Plan for Change helping to grow the economy and giving people the freedom to travel in a more sustainable way.”

Tim Alderslade, CEO of Airlines UK, said “UK airlines support the SAF Mandate as both a powerful and practical tool for driving down aviation carbon emissions and a clear signal that the industry is fully committed to a net zero future.”

“Our priority is ensuring airlines have access to the increasing volumes of SAF required to meet the mandate as global demand soars, at the most competitive price possible for consumers.”

The UK mandate is ambitious and scaling SAF production will mean further work to expand eligible feedstocks, incentives to help cut costs and, critically, ensuring the design of the revenue certainty mechanism enables the UK to increase production of advanced fuels this decade whilst keeping costs as low as possible, critical for achieving mandate compliance and avoiding supplier buy-out.

The start of the SAF Mandate is only one milestone on the UK’s path towards decarbonizing aviation and comes following the first meeting of the Jet Zero Taskforce – a new and refreshed group charting a clear path toward cleaner aviation.

The government has also confirmed it will introduce a revenue certainty mechanism for SAF producers to attract investment in new plants in the UK.

Working alongside the mandate, it will help to reduce risk, give investors the confidence they need to invest in UK SAF plants and encourage the supply of  SAF for the UK aviation sector.

A further consultation on the revenue certainty mechanism will be launched early this year.