ExxonMobil Shuts Catalytic Reformer at Joliet Refinery
The company has taken a major unit offline at its Illinois facility to address an ongoing operational issue.
Updated on Oct. 21, 2026 in Oil and Gas
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ExxonMobil has shut down a 50,000-barrel-per-day catalytic reformer unit at its Joliet refinery. The closure follows reports of decreased stack activity and elevated flaring at the facility.
Why it matters
The refinery is a significant provider of transportation fuel in the US Midwest, processing a total of 275,000 barrels of oil per day. The current operational issue marks another disruption for the plant following a period of downtime last month.
The affected unit has a 50,000-barrel-per-day capacity, representing a portion of the refinery's 275,000-barrel-per-day total processing limit. The facility typically produces approximately 11 million gallons of diesel and gasoline daily.
The players
ExxonMobil
ExxonMobil is a multinational oil and gas corporation that operates refineries and chemical plants globally.
The details
The facility is currently addressing an operational issue that necessitated the immediate shutdown of the reformer unit. Operations were suspended after plant monitors recorded decreased stack activity alongside increased flaring.
Timeline
September 2026: A power outage caused two weeks of downtime at the Joliet refinery.
October 20, 2026: The catalytic reformer unit was taken offline.
Market Landscape
The current shutdown follows a pattern of operational interruptions at the Joliet facility established by the September 2026 power outage. These recurring issues impact the facility's ability to maintain its consistent output within the competitive Midwest fuel market.
Motorists in the US Midwest may see fuel supply impacts if the shutdown of this major unit causes a prolonged reduction in the facility's 11 million gallon daily output. Residents should monitor local fuel prices for potential fluctuations resulting from the reduced production capacity.
The takeaway
Operational issues at major refineries like the Joliet site can lead to localized supply constraints and potential price adjustments at the pump. Maintaining awareness of facility status updates can help consumers prepare for possible disruptions in regional fuel availability.
Further reading
Learn more about local industry updates in the Oil and Gas section.
Source note: This article includes information reported by BOE Report.
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