One thing that I am concerned about is of the producers will push them toward a "Green" alterntive to work with, and promote some of the other things that I have been seeing on that network. Not that I am not in favor of useing those alterntives but realistly how many solar pannels are just sitting around waiting to be setup.
Over on the program's website they show some of the stuff they built. In one case they built an electrical power system using solar panels they removed from traffic signs. They even built a sun-tracking system for it to maximize the power output.
Another thing they built was a woodgas generator to power a small gasoline motor. Woodgas is basically just the flammable gases produced by wood as it is converted to charcoal. It's not a very green energy source as you are still releasing carbon dioxide. So I'd say they aren't limited to just green possibilities.
-Blast