Michigan Supreme Court tosses state regulator’s approval of Line 5 tunnel project

By: Ben Solis

Outlets: Michigan Advance

Published: July 31, 2026

Words: 707

Last Updated: 2 days, 19 hours ago

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The Michigan Public Service Commission must revisit its order approving the Enbridge Energy Line 5 tunnel project because it did not properly examine environmental harms that might arise from extending the pipeline’s lifespan, the Michigan Supreme Court ruled Friday.

The controversial pipeline runs from Superior, Wisconsin to Sarnia, Ontario, with a 4.5-mile segment of dual pipelines running through the Straits of Mackinac, where Lake Michigan and Lake Huron meet.

The decision written by Justice …

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