Abandoned Michigan mineshafts could be new energy option

Midwest Energy News: As Michigan’s Upper Peninsula grapples with a looming electricity crisis, the region’s copper-mining past could play a role in its energy future.

“Mineshaft geothermal” is gaining attention here as researchers investigate the energy potential stored hundreds of feet below the ground. The water in these abandoned and flooded mines, which expand throughout the U.P., is just now starting to be used to heat and cool buildings.

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