Standby power is the energy used by some products when they are turned off but still plugged into a power/wall outlet. While this standby power sometimes provides useful functions such as remote control, clock displays, and timers, in other cases it is simply wasted power as a result of leaving an electronic device or power adapter plugged in. The devices causing this waste are referred to as energy vampires because these products are slowing sucking energy from your home while not providing any useful function! In addition to your home office and home electronics equipment, chargers for cell phones, ipods, power tools, etc also suck energy from your home when they are plugged into an outlet, even if they aren’t charging.
Yes, the amount of energy used by products when they are in standby mode is significant. The average U.S. household spends $100 per year to power devices while they are off (or in standby mode). On a national basis, standby power accounts for more than 100 billion kilowatt hours of annual U.S. electricity consumption and more than $10 billion in annual energy costs.
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