That being said, you can radically reduce your self reliance on other energy sources although this will require some lifestyle adaptations and not just loads of $$$.
To get a feel for the effect of location on solar energy in general and specifically on passive solar energy, I recommend a really outstanding book The Passive Solar Energy Book, Edward Mazria, Rodale Press, 1979. Yes, it's been in print a long time but it's the best I've found for the basics and walks you through the key design factors very well. I've adapted its information to industrial design, not just residential where I have also applied it.
In addition, take a look at expedition vehicle strategies for self sufficiency including solar. www.expeditionportal.com has very good information on this and a homeowner can pick up some useful tricks.
Thank you so much for the info. I’ll check out the website and the book.