What does "icf" mean?
What is the general location you want to build on? (City, State, Country)
Will it be very remote, or near a major population center?
There is a months worth of reading over at builditsolar.com,
If you are patient, there is also a great deal of valuable information right here. Keep scrolling back through the posting archives.
"A waitress asked me if I wanted my pizza cut into four slices or eight. I told her four, because I didn't think I could eat eight of them" -Yogi Berra