Use energy saving appliances like microwaves, pressure cookers and toaster ovens instead of always using the oven or stove. You can buy ‘em cheap at yard sales. Turn off your electric burner three minutes before the rice or pasta recipe calls for: it’ll stay hot that long. Same with your oven. And if you are going to bake in the oven, why not throw in an extra potato or two for tomorrow’s casserole?