Trump speculates on diesel gas export ban as excessive costs ripple throughout US marketplace

Diesel gas powers long-distance vans, freight locomotives, boats and barges, farm equipment, building and mining gear, and backup mills. Its concentrated power powers efficient engines that can haul heavy loads and refuel machines quickly. Those are all wonderful attributes for lengthy durations of heavy work on the transfer or in places not linked to the electrical energy grid.

So when diesel costs hit file highs, as they’ve, that will increase the prices of necessities like meals, transportation and even different power sources. On Sept. 14, 2026, the U.S. Energy Information Administration mentioned national average diesel prices were US$6.52 a gallon, which is up greater than 23 cents – 3.6% – from per week earlier, and up almost $2.78 – 74% – for the reason that identical week in 2025.

The U.S. conflict with Iran, and to a lesser extent the Russian conflict with Ukraine, have disrupted oil production, refinery output and petroleum supply chains throughout the global community, that are a part of my field of study on how geopolitical friction reshapes world provide chains. These conflicts have gone on lengthy sufficient now – greater than six months between the U.S. and Iran, and greater than a 4 years of direct battle between Russia and Ukraine – that the majority corporations and nations have run out of any further provides they may have had on hand.

The near-complete closure of the Strait of Hormuz has dramatically reduced the flow of crude oil throughout the global community – a uncooked materials essential for producing gasoline, diesel, jet gas and heating oil. Ukrainian assaults on Russian refineries, which have intensified through 2026, have restricted the circulation of Russian diesel to the global market.

Put collectively, all because of this there’s not a lot diesel gas left mendacity round, and plenty of individuals wish to purchase what is accessible, in addition to what little is produced every day. It’s all a matter of provide and demand. If demand stays fixed and provide drops, costs rise. The results of rising costs are broad and widespread each economically and geographically.

Food and retail

Farming and harvesting are seasonal operations that rely closely on diesel-powered gear. When farmers face excessive gas prices, they might restrict or postpone their planting and harvesting operations, which implies much less meals is produced on the market to trading floors and clients.

Higher diesel prices additionally translate into higher processing and transportation costs for meals and primary staples. In explicit, refrigerated vans carrying greens, dairy and meat merchandise to retail trading floors are heavily dependent on diesel.

Truck freight

Long-haul vans transfer client items throughout the nation from warehouses and distribution facilities to retail shops and houses. A trucking business analysis agency has estimated {that a} 20% enhance in gas prices can translate right into a 4% increase in operating costs.

Trucking is not a high-profit-margin business. So any enhance in prices will get handed on to the shoppers who purchase no matter is being shipped.

Public transit

High diesel costs have a double impact on public transit.

First, buses and trains powered by diesel gas incur a direct enhance in gas prices.

Second, the crude oil provide shortages have led to increased diesel and gasoline prices. When gasoline is dear, individuals shift to public transit to save money, resulting in elevated demand for transit.

Although diesel costs have spiked quicker and stayed increased longer than prices for gasoline, passengers lower your expenses by sharing the prices of transit.

Air fares additionally costlier, as a result of diesel and jet fuel are produced from the same production process.

Energy techniques

Diesel is used for a relatively small percentage of U.S. energy era, however it’s substantially more common in many countries, together with the place there aren’t widespread interconnected energy grids. Anyone utilizing diesel mills for major or backup energy has to pay extra for diesel.

And shortages of crude oil provides and lack of refinery manufacturing capability means much less availability of much less heating oil – which can be produced by means of the identical course of as diesel. That is anticipated to result in higher energy prices for consumers in the coming winter.

Consumer costs

Consumers will expertise completely different worth adjustments relying on their places, which impacts each the distances items must journey and the quantities of gas out there.

For occasion, the typical diesel worth in California has topped $8 per gallon, however the Gulf Coast is seeing a comparatively cheaper worth of $6.03 a gallon.

In half, that distinction is as a result of there are numerous refineries and terminals alongside the Gulf Coast, whereas California has very few pipeline connections to different refining areas. Its refineries depend upon crude oil imports from the Middle East.

In addition, California’s efforts to curb air air pollution imply it requires a more refined version of diesel fuel that emits fewer pollutants. So gas corporations in California can’t simply herald diesel from elsewhere.

Taxes and fuel surcharges additionally make a distinction in diesel costs. The federal authorities imposes a flat tax on diesel of 24.4 cents a gallon. But state and native taxes differ. California’s state diesel tax is 48.2 cents a gallon, plus a 13% sales-tax fee, on prime of which there could also be extra native taxes.

In some instances, state insurance policies to decrease these taxes are thwarted. In Georgia, the place state lawmakers suspended fuel taxes from March by means of June 2026, many counties saved their taxes on gas gross sales.

A diesel export ban?

In half to gas its personal army’s efforts in Ukraine, but additionally to assist hold its home marketplace going, Russia – usually the world’s second-largest diesel exporter after the U.S. – suspended diesel exports in early July 2026, and has prolonged that till at the least the tip of the yr.

The clients whose demand was previously met by Russian diesel are actually in search of different sources. Diesel producers within the U.S. are elevating their costs at residence, as a result of they may make more money selling their fuel overseas.

The U.S. truly produces more diesel fuel than it consumes. But it nonetheless imports some, as a result of it’s not all the time simple to get U.S. diesel from the place it’s produced to the place it’s used. Sometimes, and a few locations, it’s simpler to ship in diesel from elsewhere.

Some Republicans in Congress have proposed a ban on diesel exports from the U.S., and President Donald Trump has said he supports one. If that had been to occur, it may assist make diesel cheaper, particularly close to Gulf Coast refineries that usually export numerous their diesel. It may put much less upward strain on trucking and gear payments and client costs.

But the advantages would depend upon how lengthy the ban lasted, what precisely it banned, how diesel was moved across the U.S. and the way a lot of their financial savings oil corporations, trucking corporations and retailers handed on to common Americans.

There are substantial dangers, too. Without export transport to deal with the amount, gas storage close to refineries might refill. If it will probably’t be moved simply and economically to different states, refineries may cut back how a lot diesel they make – which might imply additionally chopping manufacturing of gasoline, jet gas and heating oil.

And abroad diesel costs would probably rise if U.S. exports disappeared, that means areas within the U.S. that also want imports would pay much more, not much less. A diesel-export ban may provide short-term aid to some consumers whereas shifting prices to others or weakening manufacturing incentives.

The power crunch from the 2 wars and continued assaults on manufacturing and transportation transport systems will proceed to have an effect on the U.S. and worldwide markets for an prolonged interval. Alternate transport routes, launch of reserves, export bans and extra subsidies are among the short-term measures that may alleviate the worst of the ache.

But till crude oil manufacturing and refinery capability expands, individuals might want to dwell with increased costs.