INEOS Styrolution to permanently close Sarnia plant in June 2026

INEOS Styrolution, a leading global supplier of styrenics materials, has announced the decision to permanently close its styrene monomer production facility in Sarnia, Ontario by June 2026.

"The difficult business decision to permanently close the Sarnia plant was made after a lengthy evaluation process and was based on the economic merits of the plant in the context of the wider industry. The long-term outlook for the Sarnia plant has deteriorated to the point where it is no longer an economically viable operating asset," said Steve Harrington, the company's CEO.

"The Sarnia manufacturing site is currently closed as a result of the recent declaration of force majeure by the regulator. We are currently assessing the conditions required to restart the site – a process that could take approximately six months."

"Our decision to permanently close the Sarnia plant by June 2026 is unrelated to the current situation. The economic reality is that we have made significant investments in the Sarnia plant over the years to ensure safe and reliable operations. Additional large-scale investments unrelated to the potential costs of restarting operations would be necessary in the near future. Such an investment would not be economically practical given today’s challenging industry environment," continued Harrington.