Don't overload extension cords by plugging in appliances that draw a total of more watts than the rating of the cord. Use special, heavy duty extension cords for high wattage appliances such as air conditioners, portable electric heaters, and freezers. When using outdoor tools and appliances, use only extension cords labeled for outdoor use.
Unplug electronic equipment that is rarely used, In the average home, 75% of all electricity used to power home electronics is consumed while products are turned off. Across the U.S., this equals the annual output of 12 power plants.