Imperial Oil says it will end more than a century of oil production in Norman Wells later this year.

The closure has been in the works since 2022, but until now, there has been no solid timeline for the shutdown.

In a news release Friday, the company said the move is needed because of declining production at the site.

It said production is slated to end in the third quarter of 2026 "as the facility comes to the end of its lifespan."

Imperial Oil said it's working on a final closure and reclamation plan for the site. Reclamation work is not expected to start until after 2030.