Looming questions over federal tax credits, supply concerns, and the future of trade flows are causing concerns for US sustainable aviation fuel (SAF) market participants, while buyers address needs in Europe given newly introduced mandates.
The domestic SAF market in the US is spurred by incentives in the form of tax credits and subsidies. This "carrot instead of stick" method is meant to bridge the gap between the high cost of investment and production of SAF, making it feasible for airlines to consume and utilize the carbon-abating abilities of the low carbon fuel. The recent expiration of the 40B blenders tax credit has made its mark on the biofuels landscape, eating into the margins of products made with more carbon-intensive feedstocks and altering trade flows on a global level. With importers to the US west coast unable to capitalize on the federally backed incentive, producers like Neste who made up more than half of the SAF market in the US in 2024 direct their Singapore-based volumes elsewhere. US west coast delivered prices during the fourth quarter of 2025 ranged from $4.80/USG to $5.98/USG, reflective of volatility in the conventional jet basis as well as inconsistent supply available at major points of uplift. Prices in the third quarter of 2024 ranged from $4.20/USG to $5.50/USG given greater anticipation of sufficient supply later in the year.
Coupled with limited domestic production that decreased from 16.5mn USG in the third quarter to 6.6mn USG in the fourth quarter, the supply of SAF in the US available on a spot basis has dwindled.
EU-wide SAF mandates kicked in at 2pc this year, rising to 6pc by 2030. But it is not until 2035 when the obligation hikes up to 20pc — with a 5pc sub-mandate for renewable fuels of non-biological origin — that the region will tip into a short position.
The UK is on a similar demand trajectory, going from 2pc this year to 10pc by 2030 and 15pc by 2035, while aiming for a 52pc cap on the SAF total being Hydrotreated Esters and Fatty Acid-based.
Combined, this could result in Europe's supply/demand balance going from a 200,000 t/yr surplus in 2030 to a -9.1mn t deficit by 2035, according to Argus Consulting estimates.
Given the newly introduced European SAF mandate, air carriers that operate in both regions look to secure volumes at major points of uplift around western Europe. Given the lower supply in the US and fluctuating prices given those changes in supply on the west coast, market activity maintains fixed on the other side of the Atlantic.
