One of the selling points for several proposed copper and nickel mines in Minnesota has been that the metal can help power green technology like solar panels, electric vehicles and windmills. But that possibility has always been somewhat hypothetical, or at least hard to quantify for the controversial projects.
PolyMet Mining says metal from its proposed mine near Hoyt Lakes would be a commodity sold on a world market. But while there is high demand for things like EV batteries, there is no guarantee how much, if any, of the product would be used for domestic green technology.