Mr. Solar Electric course. From Mr. Solar himself been livin off grid in Arizona for years.

http://www.thoughtscreate.com/edusolarindex.html

Hydrogen Appliances.com (Solar, Wind, BioDiesel, Hydrogen) Although they use to have small affordable hydrogen gas generators all they have on the site now is the 300k+ Industrial model.

http://www.hydrogenappliances.com/