Aerospace Garage

BRUSSELS · AIR

Europe’s SAF mandate steps up, and the supply gap is now impossible to ignore

The blending requirement rises on schedule. The fuel to meet it, at a price airlines can bear, does not yet exist at scale.

Compiled with AI · reviewed and signed by the desk

Europe’s sustainable aviation fuel blending mandate has stepped up to its next threshold on schedule, tightening the required SAF share in jet fuel uplifted at EU airports. The policy direction is settled and the trajectory is steep — which is exactly why the supply question has moved from background concern to acute operational risk.

The problem is arithmetic. Certified SAF production, even counting every announced plant, falls well short of what the rising mandate will require later this decade, and most current supply is the cheaper waste-and-residue pathway whose feedstock is itself limited. The synthetic power-to-liquid route our Innovation desk tracks is the only one that scales without a feedstock ceiling — and it remains several times more expensive than fossil kerosene.

Airlines are caught between a legal obligation to blend and a market that cannot yet supply affordable volume, with the cost differential flowing straight to fares. Carriers are responding with long-term offtake agreements to lock in future supply, effectively financing plants that do not yet exist.

Our read: the mandate is doing its job of forcing demand, but the decisive variable is how fast synthetic-fuel capacity is built. That timeline, not the regulation, sets the real cost of flying in Europe in the 2030s.

Air Transport deskEurope29 Jun 2026