The Royal Australian Air Force (RAAF) continues to explore the potential of sustainable aviation fuel (SAF), but significant hurdles remain before widespread adoption.
An RAAF Airbus Defence & Space A330 Multi-Role Tanker Transport – the KC-30A in Australian service – recently used SAF to operate a “special VIP flight” during the Talisman Sabre exercise. The initiative was part of a broader Department of Defence (DoD) effort to boost fuel resilience and reduce emissions.
“This is about improving energy security,” said Brigadier General Mark Baldock, who leads the RAAF’s fuel capability. “Proving the viability of alternate fuels enhances fuel resilience by diversifying our supply chains. There is also the important benefit of reducing emissions.”
Baldock adds that the RAAF’s SAF initiative involves industry and key allies.
In October 2024 the DoD outlined a sustainability roadmap in its Defence Future Energy Strategy document.
While the document deals with all branches of Australia’s military, it sees foresees SAF playing an important role reducing near-term de-carbonisation for the RAAF, particularly since it can be “dropped in” with no costly aircraft modifications required.
The document also foresees the potential of electrification and hybrid systems for smaller unmanned air vehicles and support aircraft. Australian air bases are envisaged as operating on renewable energy by 2030.
Still, Canberra sees challenges. Echoing the airline industry, SAF availability is a major issue. Given that Australia imported 80% of its jet fuel in 2024, Airbus has called for the country to focus on SAF production.
Moreover, military infrastructure upgrades will be required to enable the broader use of SAF.
Similarly, the document observes that battery technology is some way from becoming a viable power source for larger military aircraft.
As with airlines, the RAAF and other air forces are still some way from decarbonising, although military leaders see clear benefits.
In related news, the UK Royal Air Force’s Red Arrows have commenced aerobatic performances with their BAE Systems Hawk T1s using SAF.
Two European electric aviation pioneers, Vaeridion and Aura Aero, are looking at ways to share testing resources and production facilities.
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