The 40B tax credit guidance and modified GREET model begins to unlock the door for U.S. ethanol producers and farmers to participate in the emerging market for sustainable aviation fuels. However, the Renewable Fuels Association says more work must be done to fully open the market to ethanol. “We believe less prescription on ag practices and more flexibility and additional low-carbon technologies and practices should be added to the modeling framework,” says RFA chief Geoff Cooper. Growth Energy CEO Emily Skor says the administration’s all-or-nothing approach to recognizing the value of climate-smart agricultural practices may ultimately limit innovation and overall SAF production. The American Soybean Association says the announcement went “sideways” because, for soybean oil to qualify, they must be grown using no-till and cover cropping. “Specifying only two practices out of a variety of options will further restrict soybean oil use as a SAF feedstock,” says Josh Gackle, ASA President.