EU SAF Mandates Target 0.3% Fuel Share Despite High Costs

Aviation’s medium‑ and long‑haul flights depend on liquid fuels because batteries lack the energy density needed for large aircraft. Sustainable aviation fuel (SAF) is a synthetic jet fuel made from captured carbon dioxide and hydrogen via Fischer‑Tropsch synthesis; it is chemically identical to conventional kerosene and works in existing engines and infrastructure.

Sustainable aviation fuel accounts for just 0.3% of all aviation fuel used worldwide. SAF costs three to five times more than regular jet fuel. The European Union has mandated that airlines blend a minimum share of SAF into their fuel supply.

The mandate will force airlines to purchase higher‑priced SAF, likely increasing operating expenses that may be passed to travelers through ticket fees. To meet the quota, carriers will seek long‑term supply contracts, driving investment in SAF production facilities that rely on renewable energy. Over time, expanded production could narrow the price gap, but the timeline remains uncertain.