Skip the drying cycle and let dishes air dry. Consider using cold water in your garbage disposal unit. Use the microwave instead of the oven when re-heating leftovers, takeout foods, and convenience foods. Substitute the microwave for the conventional oven whenever possible in the summertime. The microwave oven is more economical, and doesn't heat up the kitchen.
Small appliances can often save energy by substituting for major appliances.
For example, a toaster oven can be used in place of conventional oven for toasting, heating, and cooking small quantities of food. This may be more efficient than using the range. Place the refrigerator away from the stove, dishwasher, heat vents, and direct sunlight. Follow the manufacturer's instructions on the amount of air space needed around the refrigerator. Use dimmer switches.