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Aviation: Biofuels

Asked by Greg SmithConservativeDepartment for TransportTabled Answered 4 August 2026UIN 18144

The question

To ask the Secretary of State for Transport, what guidance has her Department provided to the sector on using banking and borrowing flexibilities under the Sustainable Aviation Fuel Mandate to allow the deferral of obligations under the advanced fuel and power-to-liquid sub-mandates over a multi-year period.

Answered by Keir Mather

The Department for Transport’s Sustainable Aviation Fuel (SAF) Mandate policy allows for up to 25% of the obligation to be fulfilled by SAF supplied in the previous year. It does not allow for further banking and borrowing flexibilities. On 16 June the government published a call for evidence titled “SAF Mandate: SAF supply and industry certainty in an evolving market”. The call for evidence invites respondents to suggest any additional options for flexibility, whilst not undermining SAF production, investment or environmental benefits. We look forward to industry’s engagement in this exercise.

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