Michigan Supreme Court vacates key Line 5 permit

The court ruled 6-1 that the Michigan Public Service Commission’s review of a key permit for the petroleum pipeline tunnel was overly narrow, failing to consider whether the tunnel will harm public trust resources.

By: Kelly House

Outlets: Bridge Michigan

Published: July 31, 2026

Words: 1,230

Last Updated: 2 days, 20 hours ago

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The Michigan Supreme Court ruled Friday that state regulators failed to fully consider the Line 5 tunnel’s environmental impacts when issuing a key permit for the project
The Michigan Public Service Commission now must redo its analysis, adding time to a review process that has already dragged on for eight years
Line 5 foes cheered the decision while Enbridge expressed disappointment

The Michigan Supreme Court on Friday ruled that the Michigan Public Service …

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