US EPA proposes higher biofuel blending volumes through 2027

The EPA has proposed increasing biofuel blending volumes through 2027, setting targets at 24.02 billion gallons for 2026 and 24.46 billion gallons for 2027, up from 22.33 billion gallons in 2025, primarily driven by higher biomass-based diesel mandates. This move, welcomed by the biofuels industry, includes measures to discourage biofuel imports and is projected to increase the value of renewable fuel credits, with D6 credits already rising to $1.06 and D4 credits to $1.17. While biofuel groups applauded the decision, oil refiners expressed concerns about rising regulatory costs and potential refinery shutdowns, highlighting the ongoing tension between the two industries.

Analysis

The U.S. Environmental Protection Agency (EPA), under the Trump administration, has proposed an increase in biofuel blending mandates for 2026 and 2027, signaling support for the domestic biofuels industry. Total proposed volumes are 24.02 billion gallons for 2026 and 24.46 billion gallons for 2027, up from 22.33 billion gallons in 2025. This growth is primarily propelled by a significant rise in biomass-based diesel requirements, with the EPA setting a quota of 7.12 billion biomass-based diesel RINs for 2026, projected to result in 5.61 billion gallons of blended fuel, a substantial increase from the 3.35 billion gallon mandate for 2025. Concurrently, the EPA plans measures to discourage biofuel imports, including adjusting the RIN generation rate for biomass-based diesel to 1.27 RINs per gallon in 2026 and 1.28 in 2027, down from a previous projection of 1.6 RINs, reflecting the reduced import contribution. This news has already impacted the market, with Renewable fuel (D6) credits for 2025 rising to $1.06 from $0.88 and Biomass-based (D4) credits trading up to $1.17. While the biofuels industry largely welcomed the proposal, with the Renewable Fuels Association highlighting growth opportunities, oil refiners, represented by the Fueling American Jobs Coalition, expressed concerns over potential increases in regulatory costs and refinery shutdowns, deeming the requirements inconsistent with market demand and infrastructure. A significant uncertainty remains regarding Small Refiner Exemptions (SREs), with the EPA estimating a potential exempted volume range for 2026 and 2027 from zero to 18 billion gallons, creating a wide variance in potential compliance burdens for refiners.

Key Decisions for Investors

• Consider potential upside for biofuel producers and agricultural feedstock suppliers, given the proposed increases in blending mandates and measures to favor domestic production.
• Monitor Renewable Identification Number (RIN) market dynamics closely, as higher mandates and import restrictions are likely to support RIN prices, benefiting entities that generate or hold these credits, though the adjusted RIN generation rate for biomass-based diesel could temper some supply expectations.
• Evaluate the heightened risk for oil refiners, particularly smaller entities, due to increased compliance costs and the substantial uncertainty surrounding the volume of Small Refiner Exemptions, which could materially affect their financial obligations.
• Track the finalization of these EPA rules and any clarifications on the SREs, as these will be critical determinants of market impact and profitability for both the biofuel and refining sectors.