Diesel Soars to Record as Wars Cripple Refineries and Ignite Inflation Fears

Diesel prices surged to a record on Friday as wars involving Ukraine and Iran disabled refineries, restricted exports, and tightened an already strained global fuel market.

The supply shock is rapidly raising costs across transportation, agriculture, industry, and household energy markets.

Truckers in the United States are now paying an average of $5.85 per gallon nationwide.

That represents an increase of nearly 60% from the same period last year, when diesel averaged $3.71 per gallon.

The burden is even more severe in California, where diesel has climbed to $7.70 per gallon.

That is almost $2 above the national average, placing exceptional pressure on freight operators, construction companies, farmers, and businesses that depend on heavy equipment.

Unlike gasoline, diesel reaches deep into nearly every part of the economy through freight, rail, farming, manufacturing, mining, and heating.

Its record price therefore threatens to spread through supply chains and intensify inflation at a time when consumers are already confronting elevated living costs.

John Kilduff, a partner at Again Capital, said diesel costs are impossible for consumers to escape because trucks remain central to product delivery.

“You can do all the virtual shopping you want, it’s all going to come to your house on a truck that ran on diesel fuel so there’s no way around it,” Kilduff told CNBC’s “Morning Call.”

Bob McNally, founder of Rapidan Energy, described diesel as more deeply embedded in economic activity than gasoline.

Diesel is used “in transportation, it’s in heating fuel, it’s in agriculture, it’s in industrial uses,” McNally told CNBC’s “Squawk on the Street” on August 17.

“It is the important macro fuel to watch,” McNally said. That importance becomes especially clear when refinery outages collide with strong demand, leaving distributors and consumers competing for fewer available barrels.

The immediate crisis is being driven by simultaneous disruptions in Russia and the Middle East.

Ukrainian attacks have battered Russian refining assets, while Moscow has responded to the supply pressure by banning diesel exports and retaining more fuel within its domestic market.

Additional refining capacity has gone offline in the Middle East following Iranian attacks on tankers moving through the Strait of Hormuz and assaults on regional energy infrastructure.

Those incidents have threatened a vital petroleum corridor and amplified fears that further disruptions could remove additional supplies from global trade.

Valero Chief Operating Officer Gary Simmons said the conflicts have shut refineries representing about 5 million barrels per day of capacity.

Simmons provided the estimate during the United States refiner’s July 30 earnings call, highlighting the extraordinary scale of the capacity loss.

Executives at Phillips 66 also warned that refining conditions were deteriorating as geopolitical damage accumulated.

“Refining fundamentals are very tight and getting tighter with the issues in Russia and the Mideast,” Brian Mandell, executive vice president for marketing at Phillips 66, said during the company’s August 5 earnings call.

Andy Lipow, president of Lipow Oil Associates, estimated that roughly 8% of the diesel required to meet global demand is currently disrupted.

Worldwide diesel demand stands at approximately 28 million barrels per day, meaning the missing supply is large enough to reshape prices across multiple regions.

Russia’s diesel export prohibition affects around 800,000 barrels per day, according to Lipow, while disruptions around the Strait of Hormuz have removed about 1.2 million barrels per day.

Iran’s Houthi allies also disabled Saudi Arabia’s Jizan refinery, which produces roughly 200,000 barrels per day.

The combined losses are forcing fuel buyers to compete for replacement cargoes from a shrinking pool of operational refineries.

Longer shipping routes and tighter inventories can add further expense, particularly when traders must redirect cargoes across regions to cover sudden shortages.

“Diesel is a stealth tax,” Lipow said. “The higher fuel cost is passed on to the consumer in the form of higher prices for the goods and services that are delivered by truck and rail.”

That transmission makes the record diesel price far more than a problem for motorists or freight companies.

Unless refining operations recover or disrupted exports return, the shock threatens to keep transportation costs elevated and push another wave of price increases through food, manufactured goods, industrial services, and household budgets.