The Biden administration is expected to finally release on Tuesday the long-awaited update to the GREET model to determine eligibility for feedstocks to make sustainable aviation fuel (SAF), according to news reports.

Secretary of Agriculture Tom Vilsack was in Michigan last week with House Agriculture Committee Member Elissa Slotkin to discuss various issues, including the pending GREET model changes. Brownfield Ag News reports Vilsack says the model is expected to “serve as a placeholder in the 40B tax credit which applies to a small amount of the fuel in production this year.”

“There’s a 45Z credit, which is a pretty good credit, it provides quite the financial incentive to produce this fuel,” he says. “To qualify for that, I’m confident there will be climate-smart agricultural opportunities.”

Vilsack also stressed the importance of waiting for the announcement to be released rather relying on rumor because it is the Treasury Department issuing it, not the EPA.