Trump's EPA set a record blending target for biofuels in 2026, and the plants supposed to meet it are running nowhere close to the pace required. That gap is now creating real pressure on fuel costs, farm politics, and the credibility of a policy the administration has been using as proof of its support for rural America.

The numbers are stark. For 2026, oil refiners must blend or purchase credits equivalent to 5.4 billion gallons of biodiesel and renewable diesel, a target more than 60% higher than last year's level. The EPA's math assumed plants would run at roughly 90% of capacity. In May, biodiesel facilities were running at under 77%, and renewable diesel plants at 78%, according to consulting firm Argus Media.

The math doesn't work

Scott Irwin, an agricultural economist at the University of Illinois, tracked the monthly gap. Refiners generated 736 million compliance credits in May. They needed roughly 915 million to stay on pace. Through the first four months of the year, the shortfall had already reached 1.41 billion credits. To close it by December, plants would need to sustain output more than 20% above the highest monthly production level they have ever recorded.

"There is no way the industry is going to meet its targets at the rate they are going," said Paul Niznik, director of energy at Washington, D.C.-based Capstone LLC, which advises refineries and fuel marketers.

When supply of compliance credits falls short of what refiners are legally required to hold, the price of those credits rises. Refiners then face a choice: absorb the higher cost or pass it on. The fuel you buy at the pump is one place that pressure can land.

What stalled production

Part of the slowdown was policy paralysis of the administration's own making. Biodiesel and renewable diesel producers spent months waiting for the Trump administration to finalize guidance on a clean fuel production tax credit known as the 45Z credit. That guidance was released only in recent weeks. It removed some land-use restrictions and increased incentives for soy-based fuel, changes the industry had been pushing for over a year.

The delay mattered because plants need certainty on tax credits before they can sign feedstock contracts with farmers and commit to production runs. Minnesota Soybean Processors general manager Jeramie Weller said the new guidance will likely lift output, but whether it arrived in time to offset the months already lost is an open question.

A separate factor is the Iran conflict. Supply disruptions tied to the war pushed up petroleum prices, which improved margins for conventional fuel refining. That gave refiners with flexibility greater incentive to maximize petroleum output and less incentive to shift toward biofuels. Some existing biofuel production is also flowing into export markets, where prices are stronger, rather than into the domestic supply that counts toward EPA targets.

The political trap

This is where the story gets uncomfortable for the White House. The administration loudly promoted these record targets as a win for farmers and rural communities. Biofuel producers and the agriculture lobby pushed hard for exactly these quota levels. Walking them back would require invoking a rarely used provision allowing the EPA to lower its own mandates when the market can't keep up.

Industry participants, according to Niznik, do not expect the EPA to grant a waiver. Instead, the administration may look at softer adjustments, such as changing how imported biofuel volumes count toward compliance in future years. That would shift the pain forward rather than resolving it now.

The deeper issue is structural. Trump's biofuel targets assumed an industry that was ready to scale. Instead, the industry spent months frozen by uncertainty over the tax credits the administration itself controlled. The targets outran the policy environment designed to make them achievable, and the gap between ambition and output is now a real cost that will settle somewhere in the supply chain, in fuel prices, in farmer contracts, or in the political math heading into the midterms.