Shutting down the pipeline would cut off the Upper Peninsula from its supply of cheap propane, but clean energy advocates say there are better alternatives for heating.
The Upper Peninsula’s dependence on propane is a factor in the state’s debate over the future of the Line 5 natural gas pipeline.
Critics says the Upper Peninsula Power Co. is promoting its own large solar project while discouraging rooftop projects.
Residents were divided over the 49-turbine project, which was awaiting the results of a local referendum scheduled for May 7.
Previous cost estimates have not been updated since the state proposed a utility tunnel under the Straits of Mackinac.