A proposed diesel export ban, advanced by a growing number of Republican legislators, would aggravate the very diesel export ban prices problem it claims to solve, according to energy analysts and industry groups. Far from lowering costs at the pump, a prohibition on exporting American diesel would trigger production cuts, reduce supply, and push wholesale prices higher across the country.
The average price of a gallon of diesel in the United States stood at approximately $6.51 on the evening of 21 September 2026, according to data from The Hill citing AAA figures, up from roughly $3.70 a year earlier. In Iowa, the average was $6.29 per gallon around the same period.
Senator Chuck Grassley of Iowa, in Senate floor remarks on 22 September 2026, renewed his call for President Trump to impose a temporary diesel export ban by executive action and also urged a permanent E15 ethanol blend policy. Grassley, who serves as Senate President Pro Tempore, argued that high diesel prices are destroying farmers’ incomes.
Others have followed. Representative Tim Burchett of Tennessee has filed legislation that would prohibit diesel exports through January 2027, with his office arguing that elevated fuel costs are ‘ultimately passed on to consumers through higher prices for groceries, goods, and services,’ according to Quartz. Senate Majority Leader John Thune has said he is ‘open’ to examining the idea.
Why a Diesel Export Ban Would Drive Prices Up
The central flaw in the proposal concerns refinery economics. American Fuel and Petrochemical Manufacturers (AFPM) reports that U.S. refineries produce approximately 5.3 million barrels of distillate fuel per day, while domestic demand averages around 3.6 million barrels per day. That surplus of roughly 1.7 million barrels must go somewhere: currently, it goes abroad.
Remove the export outlet and refineries run out of storage. Without room to stockpile the excess, they cut production. Less production means tighter supply and, by straightforward market logic, higher prices for domestic consumers.
The scale of the potential cuts is substantial. Citing analysis by S&P Global Energy, AFPM calculates that a ban could reduce distillate production by as much as 1.9 million barrels per day and strand approximately 1.5 million barrels per day of diesel that the U.S. market would not absorb, according to a separate AFPM analysis. That would represent roughly 12% of total U.S. refining capacity, equivalent to shutting down the country’s largest single refinery.
The consequences would not stop at diesel. Because diesel and petrol are produced from the same barrel of crude, cutting distillate output necessarily reduces petrol output. AFPM warns that a ban could cut gasoline production by up to 750,000 barrels per day and risk making the United States a net petrol importer once more.
Global Markets and the Boomerang Effect
Diesel is traded globally, and withdrawing American supply from world markets would push the global wholesale price higher. Garrett Golding, an energy analyst at the Federal Reserve Bank of Dallas, has warned that this price rise ‘will boomerang back on portions of the country that rely on imports, namely the East Coast and to a lesser extent the West Coast.’
Golding co-authored a paper published on 4 January 2022 with economist Lutz Kilian, titled ‘A Ban on U.S. Crude Oil Exports Would Not Lower Gasoline Prices at the Pump.’ The paper examined a crude oil export ban, a structurally analogous policy, and concluded it would be ‘not only ineffective, but also counterproductive.’
There is also a retaliatory risk. Interior Secretary Doug Burgum has acknowledged publicly that restrictions on exports could invite countermeasures from trading partners, compounding rather than relieving the supply problem.
A broad coalition of American business, energy, and manufacturing groups has formally urged the White House to reject any fuel export restrictions. Their joint statement, coordinated through AFPM, warned that ‘export bans would lead to less fuel production, tighter supplies, and rising costs for American families, farmers, and truckers,’ and noted the particular harm a ban would cause at the start of the home heating oil season.
Patrick De Haan, a petroleum analyst, put the underlying dynamic plainly: ‘Prices for diesel are rising because diesel isn’t as plentiful (globally, mainly), which causes demand to start being reduced.’ An export ban would short-circuit that adjustment without addressing the underlying supply constraint.
So far, the White House has not acted. With Burchett’s bill establishing a legislative deadline of January 2027 and pressure building on Capitol Hill, the administration’s next move on fuel export policy will be closely watched by refiners and commodity traders alike.
