Don't lay foil on oven racks. Foods cook more quickly and efficiently when air can circulate freely. Consider using a microwave, toaster oven or crock pot when cooking small to medium-sized meals. Turn off lights in unused rooms. Take advantage of natural daylighting.
Compact fluorescents are good replacements for outdoor lighting.
Time clocks and motion sensors automatically turn off lights when you leave a room. When purchasing new appliances, compare energy efficiency labels. Try to use energy-intensive appliances such as dishwashers, clothes washers and dryers in the early morning or late evening hours to help reduce the utility's peak load. Make your waterbed with a comforter, and insulate the sides of the bed. Keep your spa or hot tub covered with a tight-fitting insulated, cover when not in use.