Why is Ineos Styrolution shutting down its Chaneyville, Illinois polystyrene plant?

According to the news, the shutdown is driven by 'continuous profit pressure and industry-wide overcapacity', and the company concluded—after a comprehensive assessment of market conditions, overall industry operating rates, site cost structure, and long-term industry outlook—that the Chaneyville plant 'no longer has economic viability for continued operation.'

What will happen to Ineos Styrolution’s other North American polystyrene production facilities?

The company confirmed that its two other North American plants—in Decatur, Alabama, and Altamira, Tamaulipas, Mexico—'will continue normal production', and the strategic shift aims to concentrate output at higher-efficiency sites to 'ensure stable supply to meet customer demand' while strengthening long-term competitiveness amid challenging market conditions.

Ineos Styrolution Plans to Shut Down US Polystyrene Plant

Jun 23, 2026

Ineos Styrolution will close its 400,000-ton/year polystyrene plant in Channaham, Illinois, by Q4 2026 citing profit pressure and overcapacity, while keeping other North American facilities operational.

ccin

2026-06-18

INEOS Styrolution to Close US PS Plant in Illinois

2026-06-23

Ineos Styrolution Plans to Shut Down US Polystyrene Plant

2026-06-25

US Wave of Chemical Shutdowns Accelerates with PS Closures

Ineos Styrolution Plans to Shut Down US Polystyrene Plant

FAQ