Aviation Biofuel: What It Means for Maritime Energy Markets
Jet fuel made from used cooking oil doesn’t sound like a maritime story. But walk the tank farms of Rotterdam, Singapore, or Los Angeles, and you’ll find aviation biofuel and marine fuel supply chains tangled together in ways that are reshaping how ports, refiners, and shipowners think about the energy transition. Aviation biofuel, often called sustainable aviation fuel or SAF, is a renewable substitute for conventional jet kerosene, and its rapid growth is now pulling on the same feedstocks, refining capacity, and terminal infrastructure that the shipping industry depends on for its own fuel future.
Aviation biofuel is produced from renewable feedstocks rather than crude oil. The most common production pathway, known as HEFA (hydroprocessed esters and fatty acids), converts used cooking oil, animal fats, and various vegetable oil residues into a drop-in fuel that meets strict jet fuel specifications. Other pathways, including alcohol-to-jet and Fischer-Tropsch synthesis from gasified biomass or waste, are gaining ground as feedstock competition intensifies. Chemically, SAF is engineered to be compatible with existing aircraft engines and fuel infrastructure without modification, which is precisely why airlines have embraced it faster than many expected. No new engines, no new pipelines, just a cleaner molecule doing the same job.
Why Maritime Professionals Should Care About Aviation Biofuel
The shipping industry has its own version of this story. Marine biofuels, blended into very low sulphur fuel oil or used neat in trials aboard container ships and bulk carriers, draw from an overlapping pool of waste oils, tallow, and biomass residues. When aviation biofuel demand spikes, as it has since the European Union’s ReFuelEU Aviation mandate began requiring blending quotas, refiners often redirect feedstock away from marine applications toward jet fuel production, where margins and regulatory pressure are currently higher. This is not a hypothetical concern. Shipowners trying to secure used cooking oil methyl ester for bunker blending have already reported tighter supply and higher prices as aviation buyers compete for the same barrels.
Ports sit at the center of this collision. Facilities like the Port of Rotterdam and the Port of Singapore are investing heavily in dual-purpose biofuel storage and blending infrastructure that can serve both bunkering operations and aviation fuel supply chains feeding nearby airports. Energy majors including Shell, TotalEnergies, and Neste have built business units that straddle both markets, producing HEFA-based fuels that can be routed either to jet fuel terminals or marine bunker barges depending on where demand and price signals point. That flexibility is efficient for the producer, but it means marine fuel buyers are now effectively competing against the aviation sector for feedstock allocation, a dynamic that barely existed a decade ago.
Feedstock Scarcity and the Road Ahead
The core challenge facing aviation biofuel, and by extension marine biofuel, is feedstock scarcity. Used cooking oil and animal fat supplies are finite and already heavily contracted. Industry analysts have repeatedly warned that global waste oil collection cannot scale fast enough to meet combined aviation and shipping decarbonization targets, let alone the power generation sector’s own appetite for renewable diesel. This has pushed both industries toward second-generation feedstocks such as agricultural residues, municipal solid waste, and purpose-grown energy crops, though commercial-scale production from these sources remains years away from matching demand.
Regulatory frameworks are accelerating the pressure. The EU’s SAF blending mandates ramp up steadily through 2030 and beyond, while FuelEU Maritime imposes its own greenhouse gas intensity targets on vessels calling at European ports starting in 2025. Both policies draw on the same certification systems, including International Sustainability and Carbon Certification standards, which creates some efficiency for producers but also means the two sectors are now explicitly linked in Brussels’ regulatory architecture. Shipping companies negotiating long-term biofuel supply contracts are increasingly doing so with an eye on aviation demand curves, not just bunker market fundamentals.
Expect the lines between aviation and marine fuel markets to blur further as feedstock competition sharpens and certification frameworks converge. For shipowners and charterers building decarbonization strategies, understanding aviation biofuel is no longer optional background knowledge. It is a direct input into bunker price forecasting, supply security planning, and long-term fuel procurement strategy across the industry.
