My brother in law in New York uses a coal pot belly stove to help keep his heating bills down. He usually buys a ton of coal in june of every year and stores it in his garage in a coal bin that he built. He buys it in June because the price of coal in cheaper in June, imagine that. As for storing a three year supply of coal, why couldn't someone dig a trench, fill it with coal and then put something like two inches of dirt on top of it. It's not like the coal will rot. As long as he doesn't need it, it is right there not taking up any space and no one knows he has it. - J.M.