Spanish energy company Moeve has become the first external supplier of sustainable aviation fuel (SAF) to join Shell's blockchain-based platform for scaling SAF use, the oil major told Reuters after a deal was signed.

Shell's Avelia platform is a “book and claim” system that aims to connect airlines, fuel suppliers and corporate buyers.

Avelia, launched in 2022 with Amex Global Business Travel and Accenture, had facilitated over 41 million gallons of SAF use across 17 airports as of mid-2025.

Moeve produces SAF from used cooking oil at its La Rábida Energy Park.

 It plans to expand overall capacity to 800,000 metric tonnes a year by 2030.

The global SAF market has struggled to scale despite pressures to decarbonise the aviation industry.

The International Air Transport Association said in June it expected the amount of sustainable aviation fuel produced to double in 2025 to reach 2 million tonnes.

However, that would only represent 0.7 per cent of airlines' fuel consumption.