INEOS Styrolution Announces Safe Completion of Sarnia Site Closure
Sarnia, Ontario — December 17, 2025
Today, we confirm the safe and complete shutdown of our Sarnia site, marking the close of more than 80 years of manufacturing history and local contribution.
When we announced the closure in October 2024, we committed to managing the process safely, professionally, and with deep respect for our employees and the community. We have delivered on that commitment. Safety, responsibility, and environmental compliance have always remained our highest priorities, right up to its final day of operation.
The Sarnia facility has been an integral part of this region since 1943. Built during Canada’s wartime manufacturing effort, the site has adapted through decades of industry change and has been supported by generations of skilled and dedicated people, through evolutions of innovation and ownership, from Canadian Polymer and Polysar Ltd. to NOVA Chemicals and ultimately INEOS Styrolution.
For more than eight decades, this plant supported families, fueled economic opportunity, and played a meaningful role in Canada’s chemical industry. That legacy belongs entirely to the people who worked here, dedicated and resilient people who showed up, took pride in their skills, and delivered exceptional work. They deserved better than to have been portrayed in storylines as anything less than this.
To our employees, past and present: thank you. Your contributions to the Sarnia site have been immense, and they will not be forgotten.
The closure of the Sarnia site marks the end of an important chapter. We are deeply saddened to see the history of this cornerstone of Canadian industry, more than 80 years in the making, come to a close. We are equally disappointed that this chapter ends among unfair and inaccurate portrayals of our site. We stand firmly by the dedication, professionalism, and integrity of our employees, and by the positive role they have played in the community.
To the Sarnia community: thank you for your partnership and support across generations. This site has been woven into the fabric of the city for decades, and it has been our privilege to be part of Canada’s industrial history.