Quick Answer
Phantom power (also called standby power or vampire draw) is electricity consumed by devices that are plugged in but turned off or in standby mode. It costs the average U.S. household $100–$200 per year — typically 5–10% of your total electric bill.
- Biggest offenders: Cable boxes, game consoles, smart TVs, computers, and chargers left plugged in
- Quick fix: Plug entertainment and office devices into power strips and flip the switch off when not in use
- Bigger fix: Use smart plugs to automatically cut power to devices on a schedule
For the full picture of what drives your electric costs, see Understanding kWh Usage or our guide on why your electric bill is so high.
What Is Phantom Power?
Phantom power is the electricity your devices consume when they appear to be off. Your TV, cable box, computer, game console, microwave, and phone charger all draw small amounts of power 24/7 — even when you are not using them.
Manufacturers build devices this way so they can:
- Power remote controls (the TV needs to “listen” for the remote signal)
- Maintain clock displays (microwave, oven, thermostat)
- Download updates (game consoles, smart TVs)
- Keep network connections alive (Wi-Fi routers, smart speakers)
- Charge batteries (laptops, phones, toothbrushes — even when fully charged)
Each device draws only 1–25 watts in standby. But multiply that across 15–40 devices in a typical home, running 24 hours a day, 365 days a year — and the cost adds up fast.
How Much Does Phantom Power Cost?
Here is the math for a typical U.S. household paying 14.3¢ per kWh (the 2026 national average):
| Scenario | Standby Watts | Daily kWh | Monthly Cost | Yearly Cost |
|---|---|---|---|---|
| Minimal (5 devices) | 15W | 0.36 | $1.54 | $18.50 |
| Typical (15 devices) | 50W | 1.2 | $5.15 | $61.80 |
| Heavy (25+ devices) | 100W | 2.4 | $10.30 | $123.60 |
| Extreme (smart home) | 200W | 4.8 | $20.60 | $247.20 |
To calculate your own phantom load: add up the wattage of all devices that stay plugged in, multiply by 24 hours, then by 365 days, then divide by 1000 to get kWh. Multiply by your rate.
Not sure what your rate is? Check your electric bill breakdown or see our guide on what a kilowatt-hour is.
The Biggest Phantom Power Consumers
Not all devices are equal. These are the worst offenders by category:
| Device | Standby Watts | Yearly Cost |
|---|---|---|
| Cable/satellite box with DVR | 25–45W | $31–$56 |
| Game console (Xbox/PS5) | 1–10W (instant-on) | $1–$12 |
| Desktop computer (sleep) | 5–15W | $6–$19 |
| Laptop charger (plugged in) | 2–5W | $2–$6 |
| Smart TV | 1–5W | $1–$6 |
| Microwave | 2–5W | $2–$6 |
| Fish tank equipment | 5–20W | $6–$25 |
| Wi-Fi router | 5–10W | $6–$12 |
| Smart speaker (Echo/Home) | 1–3W | $1–$4 |
| Phone/tablet charger | 0.5–1W | $0.50–$1 |
The cable box is usually the single biggest phantom power hog in your home. If you have a cable box with DVR, it draws almost as much power “off” as it does when recording.
How to Find Phantom Power in Your Home
Method 1: The Meter Test (Free)
- Turn off and unplug everything in your home
- Check your electric meter — note the reading
- Wait 1 hour
- Check the meter again
- Multiply the kWh used by 24 to estimate your daily phantom load
- Multiply by your electric rate to see the daily cost
Method 2: Kill A Watt Meter ($25–$35)
A Kill A Watt is a small device you plug between the wall outlet and your appliance. It shows exactly how many watts the device draws — both when on and when in standby.
Plug it into each device, check the reading after the device has been “off” for 15 minutes. Anything above 1–2 watts in standby is worth addressing.
Method 3: Smart Plug Monitoring
Many smart plugs include energy monitoring. Plug your devices into smart plugs and check the app to see real-time power consumption, even when devices are “off.”
How to Eliminate Phantom Power
Tier 1: Quick Wins (30 minutes, $0)
- Unplug chargers when not actively charging — phone, laptop, tablet, toothbrush
- Turn off the cable box overnight (if you do not record overnight shows)
- Enable “energy saving” or “eco” mode on your TV, game console, and computer
- Switch game consoles from “Instant On” to “Energy Saving” mode (saves 10–15W continuously)
Tier 2: Power Strips ($15–$30)
- Entertainment center: Plug TV, cable box, sound bar, and game console into a single power strip. Flip the switch off when not watching.
- Home office: Plug computer, monitor, printer, and speakers into a power strip. Flip off at night.
- Kitchen counter: Unplug toaster, coffee maker, and microwave (if it has a clock you do not need)
Tier 3: Smart Plugs ($15–$50)
Use smart plugs to automate the process:
- Set a schedule: entertainment center turns on at 5 PM, off at 11 PM
- Set motion triggers: office equipment turns off when you leave the room
- Monitor real-time usage to identify remaining hogs
Tier 4: Whole-Home Changes ($200+)
- Smart power strips with master/slave outlets: when the TV turns off, all peripherals lose power automatically
- Dedicated switched outlets: Have an electrician install outlets controlled by a wall switch
- Solar panels with battery: Offset phantom load entirely with net metering credits
Real Savings Example
A family in Texas with 18 plugged-in devices was paying $145/month for electricity. After auditing phantom power:
| Change | Standby Watts Eliminated | Monthly Savings |
|---|---|---|
| Cable box on smart plug schedule | 35W | $3.62 |
| Entertainment center on power strip | 12W | $1.24 |
| Office equipment on smart plug | 18W | $1.86 |
| Unplugged all chargers | 8W | $0.83 |
| Game console eco mode | 12W | $1.24 |
| Total | 85W | $8.79/month ($105/year) |
That is a 6% reduction in their electric bill with no lifestyle change — just smarter power management.
