US refinery capacity utilization reached 96.2 percent in the week ending July 17, 2026, up from 94.7 percent in the same week of 2025, according to Energy Information Administration data. Two regions ran flat out. Refineries in the Midwest and the Rocky Mountains, designated PADD 2 and PADD 4, operated at 100 percent utilization.

Running near the physical ceiling leaves no slack for unplanned events. With fuel inventories drawn down and export volumes at high levels, a hurricane landfall on the Gulf Coast or a single unplanned unit outage now translates into a supply gap that the system cannot backfill from spare capacity.

Wholesale diesel futures reflect that exposure. US wholesale diesel contracts have climbed 26 percent so far in July. Refining margins for gasoline and diesel have reached record highs globally, driven by conflict in the Middle East, a Russian ban on diesel exports, and falling fuel inventories across major consuming regions.

The utilization figure carries direct freight cost consequences. Retail diesel pricing tracks wholesale contracts with a lag of one to three weeks, which means the July futures move is likely to appear at the pump and in fuel surcharge tables through August unless run rates ease or inventories rebuild.

Utilization above 95 percent is historically difficult to sustain through late summer, when heat reduces throughput efficiency and scheduled turnaround work resumes ahead of the winter fuel specification change.

Source: OilPrice.com - https://oilprice.com/Latest-Energy-News/World-News/US-Refinery-Utilization-Hits-962-as-Fuel-Markets-Tighten-Worldwide.html