EU SAF supply hit 1.1 million tonnes in 2025, clearing the first ReFuelEU Aviation mandatory threshold — but the real long-term cost story may be written underground, not in electrolysis halls.
Twelve’s AirPlant One, the first commercial-scale US Power-to-Liquid e-fuel plant, exposes the central weakness of electrolytic hydrogen — a weakness that geological hydrogen from sites like Lorraine’s PTH-2 well could directly address.
The EU-backed ECO2Fuel project is running a 1 MW electrochemical system that converts captured CO₂ and renewable electricity directly into liquid e-fuels — and the efficiency calculus changes dramatically when the hydrogen feedstock comes from the ground rather than an electrolyser.
A Farnborough Airshow study projects Canadian SAF reaching 40% of aviation fuel demand by 2040, and the technical performance metrics embedded in that forecast rhyme strikingly with the efficiency benchmarks emerging from natural hydrogen science.
As RED III tightens renewable-fuel mandates and the 2035 ICE deadline looms, range-extender powertrains burning hydrogen-derived e-fuels offer a regulatory pathway—if feedstock carbon intensity meets EU thresholds.
As compliance directors map 2030 ReFuelEU and RED III obligations, geological hydrogen—despite Lorraine’s discoveries and HY4Link infrastructure—sits outside recognised pathways, creating a regulatory gap that could reshape decarbonisation strategy.