Eliminating "phantom load" electricity loss from home appliances will save up to 20% on electrical bills.
A recent study by students and scientists at the University of California, Berkeley, and Lawrence Berkeley National Laboratory (LBNL) shows that the average American home pays between $150 and $270 every year to keep those little red lights burning, the clocks ticking and the electronics humming while the appliances go unused. Eliminating this "standby" or "phantom load" electricity could save households between 10% to 20% on their average monthly electricity bill, the study found.
Standby power, also called vampire power, phantom load, or leaking electricity, refers to the electric power consumed by electronic appliances while they are switched off or in a standby mode. A very common "electricity vampire" is a power adapter which has no power-off switch. While this consumption of power may be used to provide useful functions for appliances such as remote controls and digital clocks to the user, most power consumed by non-operational devices is considered wasted.(From Wikipedia)