October 7, 2026
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CITGO Celebrates 100 Years of the Lemont Refinery
Facility continues to serve as a cornerstone of CITGO's refining network and a critical supplier of transportation fuels across the Upper Midwest
The CITGO Lemont Refinery marks its 100th anniversary this year, celebrating a century of fueling progress, supporting communities and providing reliable energy across the region. The milestone commemorates 100 years of contributions by employees, contractors, retirees, elected officials and community partners in Lemont, Romeoville and Lockport who have helped shape the refinery's history and support its role in meeting the region's energy needs.