What Is Standby (Vampire) Power?
Standby power is the electricity devices draw while plugged in but “off” — the clock on the microwave, the instant-on console waiting for a voice command, the charger warming in the wall. It runs 24/7, so small wattages compound: 18 watts of cable box is 157 kWh and roughly $27 a year at the US average rate. Across a whole house, studies put standby at roughly 5–10% of residential electricity use — often $100+ per household per year.
Which Devices Are Worth Unplugging?
The ranking is wattage × how many hours the device is actually used. Set-top boxes and instant-on game consoles top the list (10–20 W around the clock for devices you use a few hours); TV standby and microwave clocks are mid-tier; phone chargers without a phone attached draw almost nothing and are not worth the habit. The efficient move is not unplugging individual things daily — it is a smart power strip for the entertainment cluster that cuts everything when the TV sleeps, and putting the router/DVR you actually need 24/7 on a regular outlet. For the decision on the lighting side, take the LED quiz.
Frequently Asked Questions
How much standby power does an average home use?
Field studies put standby power at roughly 5–10% of residential electricity use — commonly $100 or more per household per year in the US. The heavy hitters are set-top boxes (10–20W around the clock), instant-on game consoles, older routers, and anything with a display or remote receiver. A $15 plug meter will show exactly where yours goes in an afternoon.
Is it bad to unplug electronics every day?
Modern electronics handle power cycles fine — daily unplugging shortens nothing meaningful. The practical exceptions: DVRs that record on schedule, routers that renegotiate connections annoyingly, and smart devices that need a minute to reboot. For those, a smart power strip or switched outlet gives the same savings without the ceremony.
Do smart power strips actually save money?
Yes, when they guard the right cluster. A strip that cuts peripherals when the TV sleeps (or on a schedule) typically eliminates 15–40W of standby in an entertainment center — $22–60 a year at average rates — against a $25–40 purchase, so payback lands inside the first year or two. They do nothing for devices you actually need 24/7, which belong on ordinary outlets.