Well, here in N.E. Az, this morning, it is overcast , breezy and supposed to snow. My solar is working at about 1/2 normal output , but my wind generator is working about double or better then normal for this time of day. What I am getting to is this: If your solar is assisted by wind, then on days like this when we are braceing for a storm, the wind will sometimes make up for the loss in sun power. Generally speaking this is the ideal set up, even then at times you will still need a good reliable back up gennie for when you don't get either wind or sun. If the economy would get even a little better, I would be putting up my second wind gennie. But, it does take money, and that is in short supply right now. But soon, if at all possible , it will be ordered and headed up into the sky. Those of you just still in the thinking mode, may want to consider some of both also, rather then just concentrating on solar alone. Thoughts of the day is all.