Your statement "I could envision....wind or solar could....."; tweeked me.

I just don't see either having any serious impact any time soon if ever. Utilities need to provide electricity as need, not as the wind or sun provides it. If you want to put up a wind/solar generator fine, but utilities don't have the luxuryof falling back on the grid, they are the grid. We don't have the capacity/technology to store wind/solar so wind/solar doesn't replace conventional energy, especially on a hot, humid overcast, stagnant day. The utility must still provide the electricity rain or shine, wind or not, and wind/solar can OFTEN provide nearly ZERO for weeks. Totally unreliable.