Also don't forget, if you can produce more power than you use, the electric company will begin to write checks for YOU to cash, or at least that is how I have heard the process works. Perhaps they just give you credit on your bill, but the fact remains, if you produce more than you use, you get paid for it
The world's premiere solar power facility (Ivanpah) has a story to tell if you care to read it. I do not believe it is the scientists whom keep getting these numbers wrong, but rather the special interests, politicians and their corporate cronies using them. The projected 377 mega watt production quoted everywhere, even today, would require 24/7/365 days which is simply not a real world number (ie lacks integrity). Without their current natural gas use/production this facility would be an utter failure to those whom rely upon it.
I have nothing against solar brother, that is if you can actually afford it. I was just pointing out the willful manipulation of the numbers by the industry for personal gain that is driving the mistrust you had questioned. If you are able to make such an investment personally, do it knowing the risks and with your eyes open.
