Not sure if I mentioned it before, but we had a 4.68 kw solar system installed at the end of last year. It was connected earlier this year (45 days before the end of the billing cycle to be exact). Our last electricity bill was reduced by $200 by having solar connected for 45 days, which works out to about 5 dollars a day. Not bad. We will see how much it produces in the coming not-so-sunny months.
Our house faces North, and due to the roof shape we had a "split" system put in, which means that half the panels face West, and half face East. I am told that our system would be producing more if the panels faced North instead, but that wasn't an option for us. Oh well!