Plain-English summary
Court vacates EPA denials of small-refinery exemptions under Renewable Fuel Standard and sends back to agency
The Supreme Court vacated the Fifth Circuit judgment and remanded EPA's decisions that denied 105 small oil refineries exemptions from the Renewable Fuel Standard. The Court's opinion, delivered June 18, 2025, requires further proceedings consistent with the Court's reasoning.
Why this matters
The case affects how the EPA handles exemption requests from small refineries under the Renewable Fuel Standard, a program that requires blending biofuels into transportation fuel. The ruling shapes administrative procedures and legal standards the agency must follow when approving or denying waivers, which influences refinery costs, biofuel demand, and how strictly the RFS is enforced.
Who may feel it
- Small oil refineries that seek RFS exemptions
- Biofuel producers and ethanol industry groups
- Fuel distributors and refiners subject to RFS obligations
- Consumers and state governments concerned with fuel supply and costs
- Environmental and clean-air advocacy groups
Key questions
- Did the EPA lawfully deny the small-refinery exemption petitions under the Clean Air Act's Renewable Fuel Standard?