The solar resource does match up fairly well with the hottest part of the day, and, therefore, can mitigate the problem of peak power demand.
Stavros
I work for an electricity distribution utility in Adelaide, Australia. (We distribute, we don't retail). Our climate and location is similar to LA (different hemisphere of course).
Solar works well, but
- output falls dramatically with any cloud cover. So, for fine sunny days, you get a good match. If you get a humid, overcast day, it fails dismally.
- the orientation of the solar array needs to be aligned to match the time period for required demand. Typically, these solar arrays are aligned to the north at an angle of 30 degrees or so (it varies, depending on the latitude of the location, to maximise the surface coverge exposure to the sun throughout the year and across the day). In late afternoon in extreme summer, the output can have dropped significantly on a sunny day because of the location of the sun.
So, solar is very good if you want to use it on a sunny day, and at times when the array is directed at the sun. It isn't as good when its cloudy (but still hot) or late in the afternoon/evening (but still hot).
The inability to efficiently store electricity is a real bugger. If we could, the cost of generation and elctricity distribution systems would be so much lower, because we could probably reduce the installed capacity by 20% (we have very few hours per year that use this part of the system capacity, but we have to have it because when it is hot, it is really hot!)
James B