Is this a sustainable, scalable idea?: Shut down all of our power plants and replace them with residences, other businesses, and museums

Replacing a crappy old coal plant with green urban development: today D.C., tomorrow ...? | Grist

But how could Alexandria, Va., replace what is, after all, an economic asset? Well, the American Clean Skies Foundation is all over that. It just released a plan called Potomac River Green, which would replace the plant with a residential and commercial development, a revitalized waterfront, and (the kicker) an energy museum/education center, all of it built to LEED standards.