I've got my energy bills down too. I just stumble around in the dark instead of turning on the lights. I don't shower. I don't cook food, raw is good enough. I don't wash my clothes, after a while, there is enough dirt etc on them that as much falls off as is accumulating, and the equilibrium point is barable. I put up a sign on the front door asking visitors to scream instead of using it. Instead of putting my garbage out to be collected each week, I let it accumulate in the backyard, this attracts local cats, birds, rats and other endothermic creatures, which can be stuffed into a sack and used as a hot water bottle on cold nights (and after a couple of nights, when the heat production from the bag stops, I can also use the contents to save on my weekly grocery bills).