Rewriting the RFS Playbook: The Challenge of Meeting D4 Biomass-Based Diesel RIN Generation for 2026-2027
by Todd Hubbs and Scott Irwin (Oklahoma State University and University of Illinois/farmdoc daily) On March 27, 2026, the U.S. Environmental Protection Agency (EPA) released the final “Set 2” rule establishing Renewable Volume Obligations (RVOs) under the Renewable Fuel Standard (RFS)