Right now, while you read this, devices in your home are using electricity despite being turned off. Your cable box is drawing 25 watts. Your game console in instant-on mode is pulling 15 watts. Your computer monitor, your soundbar, the charger plugged into the wall with nothing connected to it — all of them are sipping power around the clock. This is phantom power, also called standby power, vampire power, or idle load. Whatever you call it, it accounts for 5 to 10 percent of the average household's electricity bill.
That does not sound like much until you do the math. At the national average electricity rate, phantom power costs a typical U.S. household $100 to $200 per year. You are paying to power devices that are not doing anything. The thermostat display you glance at once a day. The cable box clock nobody reads. The printer that has been on standby since March.
What Causes Phantom Power
Phantom power exists because modern electronics rarely turn fully off. When you press the power button on your TV, you are not disconnecting it from the electrical supply — you are putting it into a standby state. The processor, network card, infrared receiver, and HDMI-CEC circuitry all remain partially powered so the TV can respond instantly when you press the remote. Convenience has an energy cost.
The same logic applies across most consumer electronics. Game consoles maintain network connections for background updates. Smart speakers listen for wake words 24/7. Cable boxes download program guides and updates overnight. Chargers convert AC to DC continuously whether a device is connected or not (modern chargers draw less than old ones, but they still draw). Anything with a remote control, a clock display, a network connection, or a standby light is drawing power when "off."
The power draw per device ranges from trivial (a modern phone charger draws 0.1 to 0.5 watts with nothing connected) to significant (a cable box draws 15 to 45 watts on standby — comparable to an LED light bulb running continuously). The problem is not any single device. It is the accumulation of 15 to 30 devices across a household, each drawing a small amount, adding up to a meaningful slice of your electricity bill.
The Biggest Offenders
Cable and satellite boxes: 15 to 45 watts. These are almost always the single worst phantom-power offender in a household. A DVR box with a spinning hard drive draws the most — it is essentially a small computer that never fully shuts down. Even basic non-DVR cable boxes draw 10 to 15 watts on standby. A household with two cable boxes is spending $25 to $60 per year powering boxes that are off.
Game consoles in instant-on mode: 10 to 25 watts. The PlayStation and Xbox both offer an instant-on mode that keeps the system partially powered for faster boot and background downloads. Convenient, but it costs $15 to $25 per year per console. Switching to energy-saving mode in the system settings adds 20 to 30 seconds to boot time and drops standby draw to under 1 watt.
Desktop computers in sleep mode: 5 to 15 watts. Sleep mode maintains RAM contents and network connections. It is far better than leaving the computer fully on (which draws 60 to 250 watts), but hibernate mode (which saves RAM to the hard drive and powers down completely) draws near-zero and resumes in 10 to 20 seconds.
Soundbars and AV receivers: 5 to 15 watts. These maintain Bluetooth, Wi-Fi, and HDMI-CEC connections on standby. Most have no true off switch — the power button is a standby toggle.
Laptop chargers, phone chargers, and power adapters: 0.1 to 5 watts each. Individually small, but most households have 5 to 15 of these plugged in at any time. A charging station with four adapters and a laptop brick draws 8 to 15 watts total even when nothing is charging.
Printers: 3 to 8 watts. Home printers maintain standby power for wireless connectivity and print queue monitoring. If you print twice a month, your printer is spending 99.9 percent of its powered-on time doing nothing but waiting.
How to Find Your Phantom Loads
A plug-in electricity usage monitor (sometimes called a kill-a-watt meter) measures the real-time power draw of any device plugged into it. Plug the monitor into the wall, plug your device into the monitor, and read the wattage display. Test each device in your home in its "off" or standby state. Anything drawing more than 1 watt on standby is a candidate for management.
You do not need to own a meter permanently. Many public libraries lend them for free through energy conservation programs. Use it for one weekend — walk through the house, test every device, write down the draws, and return it. The information you gather lasts indefinitely even though the meter does not stay.
For a rough estimate without a meter, look for these indicators: anything with a standby LED or clock display is drawing power; anything warm to the touch when off is drawing power; anything that responds to a remote control is drawing power. If it has any of these signs and is not actively in use, it is a phantom load.
The Fixes
Smart power strips (best for entertainment centers and offices): A master-controlled strip detects when your TV or monitor powers down and cuts power to all connected peripherals automatically. One strip on the entertainment center and one on the home office desk typically captures 60 to 70 percent of a household's total phantom load. See our smart power strip guide for specific recommendations.
Switched power strips (budget option): A regular strip with an on/off toggle, flipped manually at bedtime or when leaving. Achieves the same result as unplugging but is more convenient. Costs $8 to $15. Requires you to remember to flip it — which most people sustain for about two weeks before the habit erodes. Effective if you are disciplined; otherwise, go smart.
Smart plugs with schedules (best for single high-draw devices): A Wi-Fi smart plug on a game console, printer, or charging station can be scheduled to cut power overnight and restore in the morning. Set once, runs automatically. Costs $10 to $15 per plug. Also useful for identifying specific device draws — most smart plugs include energy monitoring in their app.
Device settings (free): Switch game consoles from instant-on to energy-saving mode. Set computers to hibernate instead of sleep. Disable "quick start" on smart TVs. Turn off Wi-Fi on printers you only use via USB. These settings changes cost nothing and typically reduce the device's standby draw by 80 to 95 percent. The only cost is a few extra seconds of boot time.
Unplug what you rarely use (free): A guest bedroom TV, a seasonal space heater, a kitchen gadget you use once a month — unplug them when not in active use. No behavior change required for devices you are not using regularly.
The Math
Here is a realistic phantom-power audit for a typical household before any fixes:
Cable box: 30W × 24h × 365 days = 263 kWh/year. Game console (instant-on): 15W × 20h × 365 = 110 kWh. Desktop PC (sleep): 10W × 16h × 365 = 58 kWh. Soundbar: 8W × 20h × 365 = 58 kWh. Chargers and adapters (cluster): 10W × 24h × 365 = 88 kWh. Printer: 5W × 24h × 365 = 44 kWh. Misc (smart speaker, old router, fan standby): 5W × 24h × 365 = 44 kWh. Total: approximately 665 kWh/year. At the national average of roughly $0.17/kWh, that is about $113 per year in phantom power.
A smart strip on the entertainment center and a smart plug on the office setup eliminates roughly 75 percent of that — saving $85 per year for a $50 to $60 one-time investment. Payback period: less than one year.