Paul,
I think that it may be pertainent, to get back to the topic at hand.
Living off of the Grid supply has been a hobby in the NZ/Australia for a number of years over here, now that a few people have taken up Alternative Energies( mainly Solar
heating of water).
Ever heard of Solar Cooking, Paul?, its really good if you have good sunshine around midday.
Want to know any more?, you know where to ask.ECN.