BRUSSELS · AIR
The SAF mandate gap is widening, and airlines are financing plants to close it
Blending requirements are rising on schedule. Certified production capacity is not — so carriers are underwriting refineries that do not yet exist.
Compiled with AI · reviewed and signed by the desk
Europe’s sustainable aviation fuel blending requirement continues to step up on its legislated trajectory, and the arithmetic remains uncomfortable. Certified production, counting every announced plant, falls materially short of what the mandate will demand later this decade. Most current supply comes from the waste-and-residue pathway, whose feedstock has a hard ceiling.
The response has become structural rather than transactional. Rather than simply buying SAF on the market, airlines are signing long-term offtake agreements that effectively finance plants at the development stage. The carrier gets supply security and a hedge against price spikes; the developer gets the bankable revenue certainty needed to reach financial close.
The pathway that scales without a feedstock limit is power-to-liquid — synthetic fuel from renewable electricity, water and captured carbon. It remains several times more expensive than fossil kerosene, and its cost curve depends on renewable electricity prices rather than anything aerospace controls.
Our reading: the mandate is doing its job of forcing demand into existence. The variable that decides the cost of European flying in the 2030s is how fast synthetic capacity gets built — and that is an energy-sector question as much as an aviation one.