Our current world mirrors the power structure in place, which is top-down, favoring a few large units, exercising total control, modern electronics
could easily be used to create network like you described, unfortunately power grid and power plants are often owned by the same people....
Alternative Energy would allow certain rural areas (especially the ones with access to hadro power) to establish energy independence and even sell of
excess electricity, provided poer lines are in place and grid losses tolerable, but i fail to see how a city would be better of with thousands of
small units.
PS: there's of course another last reason to favor micro plants - in case of global breakdown, your electric tools would be more than ugly paper
weights

