Why is INEOS Styrolution closing its Channahon, Illinois polystyrene plant?

INEOS Styrolution is closing the Channahon plant due to 'persistent margin pressure and industry oversupply'; CEO Steve Harrington stated that, after evaluating market conditions, industry utilization rates, the site’s cost structure, and long-term outlook, the company concluded that continuing operations at Channahon is 'no longer economically viable'.

What is the capacity and operational history of the Channahon plant?

The Channahon plant has a capacity of 400,000 tonnes/year and has been in operation since 1960.

INEOS Styrolution to Close US PS Plant in Illinois

Jun 18, 2026

INEOS Styrolution plans to shut down its 400,000-tonne/year polystyrene plant in Illinois by Q4 2026 due to margin pressure and oversupply. Production will consolidate at remaining North American and Mexican facilities.

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INEOS Styrolution to Close US PS Plant in Illinois

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