Canadian Oil Maintenance Triggers U.S. Refinery Supply Shortage

United States oil refineries are facing a significant supply shortage of Canadian crude oil due to planned maintenance in the Canadian oil sands. Starting next month, this maintenance is expected to remove approximately 300,000 barrels per day of production, coinciding with a period where U.S. refineries are processing the most crude in eight years to capitalize on record diesel margins.

Suncor Energy and Canadian Natural Resources are among the production companies planning to shut equipment for maintenance. The supply squeeze is exacerbated by Alberta stockpiles reaching their lowest levels in over a year. U.S. Midwest refineries are particularly vulnerable, as they rely on Canada for roughly 70 percent of their supply.

This production drop occurs amid broader market volatility caused by the Iran War, which has restricted Middle East exports through the Strait of Hormuz and pushed crude futures higher. While pipeline operators Enbridge and Trans Mountain Corporation have stopped rationing space, Canadian oil prices have spiked. These higher costs are expected to reach U.S. gas pumps before the September Labor Day holiday.