NPR: Power Hungry: Visualizing The U.S. Electric Grid: "The U.S. electric grid is a complex network of independently owned and operated power plants and transmission lines. Aging infrastructure, combined with a rise in domestic electricity consumption, has forced experts to critically examine the status and health of the nation's electrical systems."
The proposal is really a mostly good idea, the only question is how well it handles an outage. I remember a few years ago a couple of major blackouts that took down whole regions of the country. In one case we had power because our town was not hooked up to the rest of the grid. It better have more resilience then that.