Wood/corn/pellet is just a step below oil and propane in heating sources. They are a complicated process, one in which if you didn't have the refinery you would be left in the cold, pellet plant included. Outdoor wood boilers are wood hogs and inefficient. Anyone with a $10 dollar bow saw could keep warm in the winter, twice. with a simple wood stove. Even in a drafty, not so well insulated house. So why fancy insulated homes? It is attached to the heating sources. and comfort levels.

Tim