First off I wasn't talking taking the entire plant offline.
They reduce power production at night and do routine maintenance during this time. They cycle various parts of the plant to maintain stuff, not just generators.
My whole point with electric (full or hybrid) is we DON"T HAVE THE CAPACITY to support it. We can't produce the electricity to support it. my brother in law lives in LA. He drives a hybrid gas/electric and does nothing but complain that he can't plug his car in because of the brown outs. He can't plug it in at work because his company won't allow it (electrical cost), he can't plug it in at his condo because the home owners assoc. won't allow it (electrical costs). So he has to run the gas engine all the time to charge the batteries.
Until we can get the electrical systems in this country up to speed, electral type engines won't work.
As for solar power systems on homes and such.
That is a good idea, the costs of converting a home over is kind of steep and there is no way to sell the power back to the electrical company without major changes and additional costs for switching gear and such.
The cost of doing a solar system on a house is coming down and the amount of energy you get from solar is getting pretty impressive.