U.S. Diesel Shortage Persists Despite Record Crude Production

U.S. crude oil production is projected to average a record 13.8 million barrels per day in 2026, surpassing the previous high, while diesel inventories have fallen below the five-year range and are expected to stay under 100 million barrels through 2027. Analysts say the disconnect stems from the fact that crude must be processed in refineries, and the current bottleneck lies in refining capacity rather than crude supply.

A typical U.S. refinery converts a 42-gallon barrel of crude into roughly 19-20 gallons of gasoline and 11-13 gallons of ultra-low-sulfur distillate, the latter covering most diesel and heating-oil demand. Because refineries are designed for a certain product mix, they cannot simply double diesel output even when diesel prices rise.

During the third quarter, refineries operated at about 96% of capacity, leaving little idle margin for additional diesel production. Maintenance schedules, especially in the fall, further limit the ability to increase runs. Total operable crude-distillation capacity slipped to about 18.2 million barrels per day at the start of 2026, reflecting a modest decline in overall refining capacity.

The diesel shortage is also a global issue. The Energy Information Administration notes that U.S. distillate stocks fell as supplies from the Middle East, Russia and China contracted. Russia has limited fuel exports after refinery damage, Middle Eastern output has been disrupted by regional conflict, and China curtailed exports to rebuild domestic inventories. Europe, with reduced refining capacity over the past decade, faces heightened import dependence, intensifying competition for available diesel.

"President Trump said this week that he would not impose a ban on diesel exports," a spokesperson noted, highlighting the trade-off between keeping more diesel at home and maintaining refinery economics.

Export levels remain near five-year highs, reflecting refiners’ response to strong margins in a tight global market. Analysts warn that thin U.S. inventories leave the market vulnerable to seasonal demand spikes and further geopolitical disruptions. The Energy Information Administration projects global petroleum inventories have already dropped by about 400 million barrels this year and may continue to decline through the end of 2026.

The situation underscores that U.S. energy security depends not only on crude production but also on refining capacity, storage, and global supply chains. Until refining output recovers and inventories are rebuilt, high crude output and high diesel prices are likely to coexist.