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5.86 billion gallons for 2027, up from 3.35 billion gallons for 2025 set by the previous administration. For total advanced biofuels under the RFS program, EPA is proposing 9.02 billion ethanol-equivalent gallons for 2026 and 9.46 billion ethanol-equivalent gallons for 2027. This is up from 7.33 billion ethanol- equivalent gallons in 2025 set by the previous administration.
“There are lots of details and questions about the calculation of those volumes,” said Paul Winters, Clean Fuels Alliance America’s director of public affairs and federal communications.
EPA noted that its volume estimates account
for the projected impacts of the proposed RIN
reduction for imported renewable fuel and
renewable fuel produced from foreign feedstocks, as well as the proposed revised equivalence value for renewable diesel. The agency is proposing to modify the value of a RIN based on whether the biofuel is derived from domestic or foreign sources. Specifically, EPA is proposing to amend RFS regulations so that foreign biofuels and feedstocks would only generate 50% of the RIN value relative to domestic biofuels and feedstocks.
In addition, EPA is reducing equivalent values of domestic renewable diesel, renewable naphtha and SAF to properly account for the fossil-derived hydrogen found in hydrotreated
biofuels, noting that biodiesel RIN values had long been lower due to its fossil-derived methanol content.
“Specifically, we are proposing to reduce the equivalence value for renewable diesel ... to 1.6,” EPA stated. “We are also proposing to specify equivalence values of 1.4 for renewable naphtha and 1.6 for renewable jet fuel. Equivalence values for these fuels are not currently specified in [the regulations] but are instead determined on a facility-by-facility basis using an equation ... Previously approved equivalence values for
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