A Deep Dive on Line 5
Enbridge’s Line 5 pipeline and proposed tunnel in the Straits of Mackinac threaten the Great Lakes, while primarily serving Canada. In July, the Tribal and environmental coalition earned a significant victory when the Michigan Supreme Court vacated a required state permit for the tunnel project. Meanwhile, additional state and federal permit processes continue to play out, as the Line 5 issue shapes the important November election. August 20, 2026.
What every Michigander needs to know about the pipeline
Facing competition, declining fossil fuel demand, and challenges building new pipelines in Canada, Enbridge is working overtime to convince Michiganders that we’re dependent on Line 5, but that’s not true. July 22, 2025.
Enbridge Line 5: Risky, Costly, and Ill-Advised
Enbridge’s plan to bore a tunnel between Lake Michigan and Lake Huron to replace an underwater segment of Line 5 is costly and ill-advised, according to a new report from the Institute for Energy Economics and Financial Analysis (IEEFA). The report shows that the aging pipeline is servicing a shrinking market and is facing additional challenges that will make it costly to maintain operations. January 16, 2025.
Enbridge Line 5: Trouble Under the Surface
Learn from a panel of experts and advocates about how Michigan, Wisconsin, and the Bad River Band of Lake Superior Chippewa are working together in the courts to shut down Line 5 and bring an end to Enbridge’s continuous trespass on state and sovereign indigenous lands. We’ll also talk about the dangers associated with the proposed Great Lakes tunnel and Wisconsin re-route and answer your questions. August 2024.
The Strait Story: Enbridge Line 5 and its Trespass on State Waters and Indigenous Lands
Enbridge’s Line 5 pipeline is over 70 years old and remains a threat to the waters and people of the Great Lakes region. Learn how Michigan, Wisconsin, and the Bad River Band of Lake Superior Chippewa are working together in the courts to shut down Line 5 and bring an end to Enbridge’s trespass on state, sovereign, and indigenous lands. July 19, 2023.
More on Line 5:
Flow and partners launch legal challenge to EGLE Line 5 tunnel permit
Gov. Whitmer to Enbridge: The tunnel game is up; it’s time for a new solution
There is no such thing as a free lunch – or a free tunnel.
Flow statement on U.S. Army Corps tunnel permit
Live webinar: A Deep Dive on Line 5