Refiners Receive Biggest Biofuel Waiver Boost Since 2017
Refiners granted highest level of biofuel waivers since 2017
The Environmental Protection Agency has granted small refinery exemptions covering 1.76 billion Renewable Identification Numbers for the 2025 compliance year, marking the highest volume of exemptions since 2017.
The decision affects the federal Renewable Fuel Standard, which requires refiners and other obligated parties to blend specified amounts of renewable fuel into the nation’s transportation fuel supply or acquire Renewable Identification Numbers, commonly called RINs, to demonstrate compliance.
EPA announced the decisions Aug. 31 after reviewing 34 petitions from small refineries. The agency said it consulted with the Department of Energy and evaluated each petition under the Clean Air Act, applicable court decisions and information submitted by the refineries.
Of the 34 petitions, EPA granted full exemptions to 18 refineries and partial, 50% exemptions to 11 others. Three petitions were denied, while two were ruled ineligible.
- 18 refineries: 100% exemptions
- 11 refineries: 50% exemptions
- 3 petitions: denied
- 2 petitions: ineligible
The 29 refineries receiving full or partial exemptions represent the 1.76 billion RINs removed from their 2025 compliance obligations. The total is substantially higher than EPA’s earlier estimate of 990 million RINs for 2025 small refinery exemptions, included in the agency’s 2026-2027 RFS rule announced in March.
That difference amounts to roughly 770 million additional RINs beyond the earlier projection. EPA said it will propose reallocating 100% of the difference into the 2026 and 2027 Renewable Volume Obligations, or RVOs. The agency intends to issue a supplemental rule before the end of October 2026.
The proposed reallocation is intended to prevent the larger-than-expected exemptions from reducing renewable fuel volumes in future compliance years. EPA said the supplemental volumes are designed to protect current biodiesel and renewable diesel production and support continued investment in additional production capacity.
Until that process is completed, the exemptions will change the amount of RIN compliance activity required for 2025. EPA also said it will issue a direct final rule extending the 2025 RVO compliance deadline by 30 days, to Oct. 1, 2026. The extension is intended to give the market time to account for the additional RINs affected by the SRE decisions.
RINs are credits generated when qualifying renewable fuels are produced and used in the transportation fuel system. Refiners, importers and other obligated parties can generate or purchase the credits to meet their annual RFS requirements. When a refinery receives an exemption, it does not have to acquire as many credits for the covered compliance year.
For small refineries, the exemptions can reduce compliance costs associated with blending renewable fuel or purchasing RINs. For the broader fuel market, however, the decisions alter the balance between required renewable fuel volumes and the credits available to satisfy those obligations.
That balance matters to producers of ethanol, biodiesel and renewable diesel, as well as to companies supplying corn, soybean oil and other renewable fuel feedstocks. Changes in RVOs and RIN requirements can affect the level of renewable fuel demand built into the federal program.
Those effects can reach the trucking industry indirectly through the cost and availability of diesel and gasoline. Renewable diesel and biodiesel are blended into transportation fuels used by fleets, while ethanol is blended into gasoline. Changes in renewable fuel requirements may influence fuel-market conditions, although the EPA announcement does not establish a direct change in retail fuel prices for truck drivers.
RIN markets had already experienced volatility as the agency worked through a backlog of SRE petitions. EPA had signaled before the final decisions that it planned to address the pending petitions and potentially delay the 2025 compliance deadline. Market participants subsequently adjusted their expectations for the number of credits that would be exempted.
The agency’s final action follows separate decisions announced Aug. 3 involving six petitions from four refineries seeking exemptions for the 2023 and 2024 compliance years. Those petitions also were reviewed in consultation with the Department of Energy under EPA’s interpretation of Section 211(o)(9) of the Clean Air Act.
EPA’s 2025 decisions provide immediate relief to the small refineries receiving exemptions, while the planned supplemental rule is intended to restore the renewable fuel volumes associated with the higher-than-expected waiver total. The proposed 2026 and 2027 adjustments will be subject to the federal rulemaking process before they become final.
