Standby power is the electricity that computers, televisions, appliances, and other electronic devices use when even when they are turned off or in a standby mode. That power is used by power supplies and battery chargers, the circuits and sensors needed to receive a remote signal, and displays including miscellaneous LED status lights. Some items have circuits that are still energized even when they are turned off. According to the Department of Energy, standby power accounts for 5 percent to 10 percent of residential energy use, costing the average U.S. household $100 per year.
One easy way to reduce standby power is to unplug devices that you don’t use very often. Turning devices off rather than letting them hibernate will generally reduce the amount of standby power used even if it doesn’t eliminate it. If you have a group of devices, such as a computer, printer, and monitor, you can use a power strip with an on/off switch. If you turn off the power strip when you are not using these devices, they will not use standby power.
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