Did you know that appliances and electronics can consume energy even when they are turned off? These “phantom loads” (also known as standby power or vampire power) occur in most devices that use electricity, such as VCRs, televisions, stereos, computers and kitchen appliances, according to the Department of Energy.

Because most of these items are plugged in 24 hours a day, their costs can add up. “This wasted standby power can account for up to 10 percent of a monthly electric bill,” says Bob Hainey, a spokesman for Pepco.

To avoid unnecessary power drainage, unplug appliances when they are not in use. Consider consolidating some plugs on a power strip and switching it off before you leave the house for the day or turn in for the evening.