Written Question·Department for Transport·UIN 82985

Aviation: Carbon Emissions

Tabled: 17 October 2025

Answered: 27 October 2025

Question

Mr Richard Holden

To ask the Secretary of State for Transport, what estimate she has made of the cost per tonne of carbon dioxide reduction achieved through the Revenue Certainty Mechanism compared to other Sustainable Aviation Fuel pathways; and what assessment she has ma

Answer

Keir Mather

The Sustainable Aviation Fuel (SAF) Mandate is the UK’s key policy to decarbonise jet fuel, and could deliver up to 6.3 megatonnes of carbon savings in 2040. The SAF Revenue Certainty Mechanism (RCM) will support investment in UK SAF production and delive...

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