Wind and solar can be complimentary: Watch the Cal-ISO renewables graph (second graph on on this page: http://www.caiso.com/outlook/SystemStatus.html http://ww

Wind and solar can be complimentary: Watch the Cal-ISO renewables graph (second graph on on this page: http://www.caiso.com/outlook/SystemStatus.html http://www.caiso.com/outlook/SystemStatus.html ; the first graph is demand and reserves ). On many days, the wind power goes up at night and down during the day, very much in complement, though in larger scale than, solar generation. More solar will more nearly equalize the two -- on good days. California is nowhere near having an overcapacity of renewable sources to worry about; just look at the first graph where the lowest demand (2 AM to 4 AM) is 22 GW on 12/14/2012. The highest the solar gets is not quite 1 GW. The wind is more variable, anecdotally as high as 3+ GW and as low as a flatline near zero for the whole state all day and night.