Many devices really do sip electricity while switched off. Here is what the numbers show, which appliances are worth unplugging, and when a switched power strip does the job for you.
You have probably heard that your home is full of “energy vampires,” devices that drain electricity even when switched off. The claim has a real basis. Standby power, also called vampire power or a phantom load, is the electricity a device draws while plugged in but not performing its main job, and the Department of Energy estimates it makes up 5% to 10% of residential electricity use. Whether hunting it down plug by plug is worth your effort is a fairer question, and one worth answering with numbers.
Myth or Fact: Devices Use Power When They’re Off
Fact. Many devices never fully shut down. Instead of turning off, they enter standby mode, staying ready to respond to a remote, light up a clock, or listen for a voice command. An international test procedure, IEC 62301, exists specifically to measure this: it defines standby power as the lowest power consumption a device draws while connected to the mains supply.
The pattern is predictable. Almost any product with an external power supply (the black cube on the cord), a remote control, a continuous display including a small LED, or rechargeable batteries will draw power continuously. Sometimes there is no obvious sign of it at all, and a meter is the only way to be certain.
The reason is simple. A device on standby must be ready for a command at any second, so it keeps its circuits energized rather than cutting power completely.
Which Devices Draw the Most Standby Power
The biggest offenders tend to be entertainment equipment and anything with a remote or a ready light.
- Televisions, cable boxes, gaming consoles, soundbars, and streaming devices. Some cable boxes record shows around the clock, and smart TVs stay ready to receive signals from the remote.
- Phone and laptop chargers. A charger converts wall power even when nothing is attached to it. A charger that feels warm when you get home has been drawing power all day.
- Kitchen appliances with displays, such as microwave ovens, toaster ovens, and coffee makers with glowing clocks.
- Voice-activated devices, which continuously pull electricity to listen for commands.
- Computers and monitors left plugged in, along with hair dryers and anything rechargeable. For portable devices, the charger or docking station draws power even with the appliance detached.
| Device | Why it draws power while “off” |
|---|---|
| TV, cable box, game console | Waiting for remote signals; some record continuously |
| Phone and laptop chargers | Convert wall power even when nothing is charging |
| Microwave, toaster oven, coffee maker | Clock and display stay lit |
| Voice assistants | Listen continuously for commands |
| Rechargeable devices | The charger or dock draws power with the device detached |
How Much Standby Power Costs per Year
The estimates give a range rather than one tidy figure. One Department of Energy estimate puts the cost of standby power at up to $100 a year for the average household. Another, also citing the Department of Energy, puts it at up to $183 per year. Both rest on the same finding that standby power accounts for 5% to 10% of residential energy use.
Some context helps. The average American household uses 10,791 kilowatt-hours of electricity annually, according to the U.S. Energy Information Administration, so 5% to 10% of that is a meaningful chunk. On a per-device level, one estimate finds individual devices absorbing anywhere from 0.5 to 30 watts in standby, and standby power has been estimated to account for up to 40% of a single device’s total energy use. Worldwide, standby power makes up roughly 10% of all electricity use.
Your own cost depends on how many devices you own, how they are used, and your local electricity rate, so treat the headline figures as ceilings rather than promises.
Myth: Unplugging Everything Saves Serious Money
Mostly myth. The wasted power is real, but capturing the full estimated amount is close to impossible, because some standby power is necessary. Refrigerators and freezers need to monitor temperature. Wireless routers need to maintain a signal. Telephones, displays, and clocks serve a purpose around the clock, so eliminating standby power entirely is next to impossible in a working home.
There is also a comparison problem. Unplugging devices takes ongoing effort for a return that varies by household, while other habits deliver steady savings with no daily attention. Replacing the five most frequently used light fixtures or bulbs with ENERGY STAR certified lights saves about $40 a year, and after that you do nothing. If your goal is a smaller bill with minimal effort, standby power is a moderate lever, not the jackpot the vampire framing suggests. For more ideas that fit a small budget, see our guide to lowering energy use at home without big spending.
Smart Strips and Switched Outlets: When They Help
This is where the practical answer lives. Instead of unplugging five devices one at a time, connect a cluster of them to a switchable power strip, and zero consumption is one flick away. The Department of Energy recommends power strips and smart plugs for exactly this reason: they let you turn devices off completely when not in use, and cutting standby power this way can make a noticeable dent in monthly consumption.
Smart plugs and smart power strips add another layer. Many can report power or energy consumption, so you can see what each device actually uses rather than guessing.
The approach works best where everything can be off at once:
- An entertainment center with a TV, console, soundbar, and streaming device that are all unused while you sleep or work.
- A desk setup with a computer, monitor, printer, and speakers.
- Kitchen counters with small appliances you use occasionally rather than daily.
It makes little sense for a refrigerator, a router, or anything that needs to stay reachable. Regulators have noticed the waste, too: federal agencies are required to buy products with standby power of 1 watt or less when compliant models are available, a rule that reflects how much power many common devices draw when not in use.
Money saver: A low-cost plug-in watt-meter can show which devices actually draw standby power in your home. Since some devices give no visible sign of continuous consumption, measuring is the only way to know for sure, and the meter can pay for itself in savings.
The Trade-Offs of Unplugging, Including Reboots and Safety
Unplugging works, but it has costs of its own. Devices that lose power often lose their settings, reset their clocks, and need time to restart and reconnect when plugged back in. A cable box or smart TV that gets cut off at the wall may take several minutes to boot and settle, and anything connected to a network drops off until it powers up again. That is why the power strip approach suits devices you genuinely never use overnight, while the refrigerator and router should stay plugged in.
There are practical trade-offs on the other side, too. Turning off a power strip cuts everything connected to it, including anything you wanted left on, so grouping devices thoughtfully matters. Handle plugs and cords by the plug rather than the cord, and avoid forcing devices into outlets that are hard to reach, since a device you have to wrestle with is one you will stop unplugging within a week.
Fact: Small Habits That Actually Move the Bill
If the goal is a lower bill, some habits outperform unplugging on pure effort-to-return ratio:
- Swap in LED bulbs. ENERGY STAR certified LED bulbs use up to 90% less energy and last 15 times longer than standard bulbs. Replacing the five most frequently used fixtures or their bulbs saves about $40 a year.
- Mind the thermostat. Heating and cooling make up almost half the average American household’s annual energy bill, more than $900 a year. An ENERGY STAR certified smart thermostat can reduce that portion by more than 8%, about $50 a year on average, and roughly $100 a year in homes unoccupied much of the day.
- Keep filters clean. Regularly cleaning or replacing air filters improves airflow and system efficiency.
- Use window coverings. Blinds, curtains, and shades block hot sun in summer and hold warmth in winter, and a programmable thermostat can match temperatures to your schedule.
- Turn off lights when you leave a room. Small, free, and it compounds.
Pairing these habits with a strip on the entertainment center covers more ground than a drawer full of dangling plugs. If spare change savings appeal to you, our piece on round-up savings asks a similar question about whether small amounts really add up.
A Practical Way to Decide What to Cut
Walk through your home once and sort devices into three groups. First, the necessary standby users: refrigerator, freezer, router, anything that monitors conditions or must stay reachable. Leave those alone. Second, the easy wins: chargers left in empty outlets, kitchen appliances with clocks you never read, printers used twice a month. Unplug them or put them on a switched strip. Third, the gray area: devices where the reboot hassle outweighs the watts saved, which you will only identify by living with them.
When it is time to replace a device rather than unplug it, efficiency labels help. ENERGY STAR appliances are developed to use very minimal power when not in use, and ENERGY STAR certified televisions are on average about 34% more energy efficient than conventional models across all modes, including standby.
Standby power is a real expense, and trimming it is one more small routine in a larger set. The habits with the clearest returns, from bulbs to thermostats, are covered in our article on saving on a tight budget, which looks at what to do when there is almost nothing left over.
Quick wins
- The Department of Energy estimates standby power makes up 5% to 10% of residential electricity use.
- Estimates put the cost of standby power at up to $100 per year per household, and in some estimates up to $183.
- TVs, cable boxes, game consoles, chargers, and anything with a clock or remote can draw power while off.
- Switched power strips and smart plugs cut standby power for a whole cluster of devices at once.
- Replacing your five most-used bulbs with ENERGY STAR LEDs saves about $40 a year with far less effort.
You might be wondering
What is standby power?
Standby power is the electricity a device draws while it is plugged in but not performing its main function. An international test procedure, IEC 62301, defines it as the lowest power consumption of a device while connected to the mains supply.
How much can a household save by cutting standby power?
The Department of Energy estimates standby power at 5% to 10% of residential electricity use, with costs of up to $100 per year in one estimate and up to $183 in another. Actual savings depend on how many devices you have, your usage, and your electricity rate.
Is unplugging everything a good idea?
No. Some standby power is necessary, such as refrigerators and freezers monitoring temperature, wireless routers maintaining a signal, and devices that need to stay reachable. Unplugging those is impractical and can reset clocks, settings, and recordings.
Do power strips really help?
Yes. Connecting devices to a switchable power strip or smart plug lets you cut power to the whole cluster completely with one action, which works well for entertainment centers and desk setups where everything can be off at the same time.
These tips are general information. Prices, plans and programs vary by provider and location, so check the details with your provider before you switch or sign up.