An unexplained power outage has forced Exxon Mobil to shut down its Joliet, Illinois refinery. The facility produces approximately 11 million gallons of fuel per day, and the shutdown removes that capacity from the market.

The incident occurs as diesel prices across the United States have risen above $6 per gallon. Refineries like the one in Joliet play a central role in supplying gasoline, diesel, and other petroleum products to the Midwest and beyond.

Power outages at large industrial sites can stem from grid issues, equipment failures, or external factors. Company officials have not yet released details on the cause or a timeline for restoring operations.

Fuel supply disruptions of this scale often contribute to higher prices at the pump and strain regional inventories. The Joliet refinery processes crude oil into finished products that support trucking, agriculture, and manufacturing sectors.

Industry analysts note that even temporary closures can tighten supplies during periods of elevated demand. Diesel, used heavily in freight and farming, has seen particular price pressure in recent weeks.

Exxon Mobil has not commented on any plans to shift production to other facilities or import additional product to offset the loss. Consumers and businesses in the affected region may face further upward pressure on fuel costs until the refinery returns to service.