Invest1 publisher3 min readPublished
A Trump-backed diesel export ban would buy about a month of cheaper Gulf Coast fuel
US diesel averaged $6.52 a gallon on Sept. 23, an all-time high, and analysts told Fortune that keeping the fuel home would lower prices only near the Gulf Coast before refiners trim runs on every fuel they make.
The Investor · Invest desk
What happened
- Trump backed calls from farm-state Republicans for a temporary ban on US diesel exports, speaking as the national diesel price reached an all-time high.
- The US average diesel price was $6.52 a gallon on Sept. 23, having crossed $6 for the first time only recently, with California averaging $8.43.
- The American Petroleum Institute, which opposes the ban, says the US supplies about 20% of global diesel exports and warned the consequences would be catastrophic.
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Why it matters
- constraint A refinery cannot cut one product line in isolation, so a measure aimed at farmers and truckers reaches households buying gasoline and airlines buying jet fuel at the same time.
- cost The relief runs about a month and sits mainly near the Gulf Coast, while the bill arrives as higher crude, gasoline and jet fuel prices and as tighter diesel for overseas buyers who already pay more than Americans do.
- contradiction The president's call and his own cabinet's assessment of the consequences point in opposite directions. A negotiated cap becomes the outcome with a price attached, and the full ban the tail.
- exposure US refiners' export book is what is exposed here: overseas buyers can contract elsewhere once American supply is treated as conditional on American politics.
Diesel at $6.52 a gallon is running $2.05 above the $4.47 national gasoline average [3][5][20]. California's $8.43 is $1.91 above the national diesel figure, about 29% higher, and some stations there have reportedly maxed out their retail displays at $9.999 [4][21]. The global oil benchmark is just over $100 a barrel [19]. Fortune describes this as a fuel problem more than an oil one, with at least 10% of world refining capacity offline [15].
The chain the analysts described to Fortune has four links. Retained barrels build a domestic glut, storage fills, refineries cut runs, and because there is no individual switch for each fuel type, gasoline and jet fuel output falls alongside diesel; crude producers then throttle back to avoid a domestic crude glut [8]. Patrick De Haan, head of petroleum analysis at GasBuddy, said that if diesel exports are banned, gasoline prices could rise toward record levels [9]. "The U.S. is not short of diesel. The world is. A potential export ban treats the global price problem as if it was a U.S.-only problem, and the cure would be far worse than the disease," De Haan said [10].
The American Petroleum Institute, which opposes a ban, puts the US share of global diesel exports at about 20% [14][22]. Set that beside the refining outage, where Ukrainian drone strikes have knocked out roughly 40% of Russia's capacity and the Iran war is keeping Middle Eastern product from shipping [16]. The two percentages measure different things, one a share of traded volume and one a share of plant capacity, so they do not net against each other. "Restricting U.S. exports would hit an already-tight market with another supply shock," said API CEO Mike Sommers. "The priority should be keeping fuel moving and refineries running, not adding new barriers" [17].
What exists so far is an endorsement. "I've said let's not send out the diesel. We make a lot of diesel. I've called for it," Trump said late Tuesday at the U.N. General Assembly in New York [2]. Energy Secretary Chris Wright agreed on Wednesday that a ban would hurt US refining and push up most fuel prices, and offered potential support for voluntary restrictions or some kind of export cap [12]. Fortune's estimate of the relief is about a month, timed with the midterm elections [6].
Start with the glut. If domestic demand and tankage absorb the retained barrels without filling, refiners never cut runs and the gasoline consequence never arrives, because every step after the first depends on storage hitting capacity fast [8]. Two other outcomes sit alongside the one the analysts sketch: a cap set above current export volumes does nothing at all, and repaired refining capacity abroad loosens the global market without any US action [12][16]. In my view the cap is the thing to price. Fortune's article does not put a number on the Gulf Coast discount, so the benefit being traded for lower refinery runs is unquantified [7].
De Haan's longer-dated point is about buyers, not pumps. "The U.S. spent years becoming the world's backstop for diesel supply. Telling every buyer from South America to Europe that American supply is politically conditional pushes them to diversify away from U.S. refineries and U.S. supplies, softening long-term demand for U.S. product and foregoing political leverage," he said [11].
What to watch
- Whether the endorsement becomes an executive action, and whether the instrument is a full ban, an export cap, or voluntary restraint from refiners.
- Gulf Coast storage builds and refinery run rates, which are the measurable test of whether the domestic glut step happens at all.
- Restored Russian refining capacity would loosen the global fuel market without any change in US export policy.