I imagine more and more Energy companies will do this, creating competition for renewable energy and investing droves in the tech surrounding it. Seems like this is also good for power grids in cities, as it allows for higher available capacity. In case of an emergency, Miners could be shut off so the power (that wasn't available on the pre mine loads) could be diverted to homes, hospitals, or wherever.
Odd part is you can even set these miners up wherever makes the most sense. Could be right next to the Power Company, so the old power delivery system wouldn't even need to be used.
Pretty crazy stuff.