Diesel Prices Surge Above $100 as Refining Bottlenecks Bite

The recent surge in diesel prices is sending a warning signal to investors that the oil market's problems run deeper than just crude supply. The US diesel crack spread, which measures the premium of ultra-low sulphur diesel futures over West Texas Intermediate (WTI) crude, has reached an intraday record high of $102.00 per barrel.

This is not a simple case of high crude prices; the diesel margin has surged above $100 per barrel for the first time ever. The market's ability to turn crude into usable fuel is severely constrained, and refined products are scarce despite elevated refining margins and diesel futures across the US, Europe, and Asia.

The bottleneck has moved downstream from crude supply, and the issue now is whether there is enough working refinery capacity, suitable crude grades, and secure shipping routes to produce and move diesel, jet fuel, and gasoline where they are needed. A high diesel margin usually indicates tight inventories, strong demand, or supply disruptions, all of which are happening at the same time.

The implications for markets are far-reaching: transport-heavy companies face higher fuel bills, farmers face higher operating costs, and consumers may eventually see the effect through delivery charges, food prices, and goods inflation. Policymakers may have to deal with a more stubborn type of energy inflation driven by refined product shortages rather than crude oil itself.