We also use a generator. It is not very big at present but we want to upgrade in the future for one that can run the essentials in the house as well as my tanks. For the moment, this one does very well and in the spring I'm going to wire up some receptacles specifically for the generator so we don't have to run many feet of extension cords through the house to get to the tanks. Our power has gone out twice this winter for 6 and 8 hours respectively and this generator kept everything in tip top shape.