[Blue Bomber Man]

Your large turbines would not ice up for similair reasons that basjoos does not need windshield wipers. Solar cells would be recieving less light, but power would still be flowing from the south. Natural gas can be throttled up and down, as can nuclear, hydro would still run, so could tidal/wave energy.

The whole concept of the Smartgrid tech seems foreign to you. I recommend you research it some so you can find its advantages. It will show why sources that throttle power will be able to charge higher rates to make up for lower productions to make them cost effective when needed. The entire system would be much more reliable then todays current grid, and would be sustainable.