An excellent report from the highly reliable ILSR (Institute for Local Self-Reliance)
  Rooftop Revolution: Changing Everything with Cost-Effective Local Solar

With the cost of solar power plunging and retail electric prices rising, 100 million Americans in the nation's largest cities will be able to "go solar" for a lower price than grid electricity in the next ten years.  Seizing this opportunity requires rethinking electricity policy and planning even while solar produces less than 1% of the nation's electricity.  Investments in new centralized power plants and transmission could divert billions of ratepayers dollars from a democratization of the electricity system.  At the same time, energy subsidies - for fossil fuels and solar energy - must be gradually transformed into barrier-breaking incentives that maintain the pace of growth and push solar into all corners of the country.

Again, it all comes down to the hold on politics by the conventional energy industry. And that the largest share of the population remains asleep or narcotized.

"Life shrinks or expands in proportion to one's courage." - Anaïs Nin