All mostly true...but I am planning a move to an area that gets frequent power outages, and I was planning on a solar installation anyway...so if I am paying a surcharge/tax anyway, and I didn't get a chance to say no to this plan, I might as well take advantage of it! ;-)
That's good thinking and as I prefaced the table I posted, "where your connection to the electric utility grid is either non-existent or problematic, solar cells can offer a practical solution". However, the system you're describing would need battery back up to keep you going at night during the outages and that gets very expensive (3x, easy).
If that new place will be in the mountains ("frequent power outages"), keep in mind about roof orientation, trees and hills and you should be alright.
Almost every one up in the mountains where I live have back up generators of about 3-5 kW capacity. They cost about a buck a watt and many now come with such good silencing systems, that you can barely tell when they're running. Check out Honda's product line, for instance. Anyway, give it a thought, it sure would be cheaper than going solar, especially with batteries. (And besides, you can easily take the generator with you when you move.)