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Exxon Joliet Restart Cuts Midwest Gas Costs

By Markets Desk · 2026-09-18 · 1 min read
A large industrial refinery complex with tall smokestacks and interconnected pipes against a cloudy sky
Illustration: Tradingbird

Wholesale gasoline prices in Great Lakes states dropped 20 to 40 cents per gallon. This follows the return of the Exxon Mobil Joliet refinery to operation.

Wholesale gasoline prices in Great Lakes states fell by 20 to 40 cents per gallon. This drop occurred as the Exxon Mobil refinery in Joliet resumed operations. The facility had been offline through Thursday of last week. Its absence contributed to a sharp rise in retail fuel costs across the region.

The Joliet refinery processes 275,000 barrels of oil per day. It is one of the largest plants in the Midwest. Tom Kloza, chief energy advisor for Gulf Oil, confirmed the price adjustment. He noted that markets show zero tolerance for refining downtime. The restart signals a potential relief for retail consumers in Michigan, Indiana, Ohio, Illinois, and Wisconsin.

Retail Prices Remain High

Retail gas prices in Michigan remain elevated despite the wholesale decline. The state average sits at $4.89 per gallon. This figure exceeds the national average of $4.46. In many areas, pump prices reached $4.99 before the restart news emerged. Data from GN auto markets/energy: gasoline prices indicates specific local variations. Big Rapids and Manistee stations reported prices near $4.99 as of Friday afternoon. Midland and Bad Axe stations showed prices closer to $4.89.

Structural Shifts in Refining

The U.S. refining landscape has changed since the turn of the century. There were 155 refineries at that time. The country now has 24 fewer facilities. However, total refining capacity has increased by 1.8 million barrels per day. Patrick De Haan of GasBuddy explains that fewer, larger plants create a fragile system. The loss of one large facility now impacts the market more than smaller outages did previously.

Geopolitics Complicate Fuel Markets

External factors continue to pressure fuel costs. Geopolitical conflicts in the Middle East and between Russia and Ukraine affect global supply. These tensions compound the impact of domestic refinery slowdowns. Wholesale diesel prices in the Great Lakes region rose by 11 cents per gallon. This divergence highlights the complex nature of current energy markets. The gasoline relief may not extend to diesel consumers in the short term.

Based on reporting by Benzie County Record Patriot, compiled by the Tradingbird desk.

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