Diesel hits record high as Ukraine and Iran wars knock out refineries, fueling inflation worries

• California diesel reached $7.70 per gallon, nearly $2 above the national average, with Ukraine's attacks on Russian refineries forcing Moscow to ban diesel exports affecting 800,000 bpd
• Approximately 2.2 million barrels per day of diesel supply is disrupted globally, including 1.2 million bpd from Strait of Hormuz attacks and 200,000 bpd from Saudi Arabia's Jizan refinery
• Diesel price increases directly fuel inflation across transportation, agriculture, heating, and industrial sectors, acting as a 'stealth tax' that gets passed to consumers through higher prices for goods and services

Summary

Diesel Fuel Hits Record High Amid Global Supply Crisis

Diesel prices reached record levels, with U.S. truckers paying an average of $5.85 per gallon nationwide—a nearly 60% increase from $3.71 per gallon a year earlier. California prices are significantly higher at $7.70 per gallon, almost $2 above the national average.

Supply Disruptions:

The price surge stems from major refinery disruptions caused by conflicts in Ukraine and the Middle East. Ukraine's attacks on Russian refineries prompted Moscow to ban diesel exports, affecting approximately 800,000 barrels per day (bpd). Iran's assaults on tankers in the Strait of Hormuz disrupted around 1.2 million bpd, while Houthi attacks took Saudi Arabia's Jizan refinery offline (200,000 bpd capacity). Combined, these conflicts have shut down refineries representing about 5 million bpd of capacity.

Market Impact:

Approximately 8% of global diesel demand—28 million bpd total—is currently disrupted. Industry experts warn that refining fundamentals are "very tight and getting tighter," with supply constraints expected to persist.

Economic Implications:

Diesel's price increase poses significant inflation risks, as the fuel is deeply embedded across multiple economic sectors including transportation, heating, agriculture, and industrial operations. Analysts describe diesel as "the important macro fuel to watch" and a "stealth tax," as higher fuel costs are inevitably passed to consumers through increased prices for goods and services delivered by truck and rail.

Energy experts from Rapidan Energy, Lipow Oil Associates, and Again Capital emphasize that unlike gasoline, diesel's impact on inflation is more pervasive due to its critical role in the supply chain and broader economy.