Do Smart Plugs Save Energy?
🇩🇪 Diesen Artikel auf Deutsch lesenSmart plugs save energy when they switch off devices that draw standby power or run longer than needed, such as entertainment centers, space heaters on a schedule or coffee makers. Models with energy monitoring are especially useful for finding out what devices really cost. Each plug draws a small amount itself, so don't use them on devices that are already off most of the time.
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Smart plugs let you control any device from your phone, on a schedule or with a voice assistant. Whether they save money depends on what you plug into them.
Where they save
- Entertainment centers: TVs, sound bars and game consoles can draw several watts each in standby.
- Schedules: turn off window AC units, fans or heaters while you're away.
- Forgetful moments: switch off a coffee maker, iron or curling iron remotely.
- Energy monitoring: plugs with power measurement show exactly how much a device uses.
Calculate standby costs
Enter the standby watts and 24 hours a day to see what an always-on device costs per year:
Appliance Electricity Cost CalculatorWhat does a device cost to run?Try the calculator →Limits
| Device | Smart plug useful? |
|---|---|
| TV and game console | Yes, cuts standby power |
| Space heater or window AC | Yes, if rated for the load |
| Refrigerator or freezer | No — must run continuously |
| Phone charger | Little benefit |
Frequently asked questions
How much power does a smart plug use?
Typically around one watt or less in standby, which adds up to a small amount per year.
Is a smart power strip better?
For entertainment centers, a smart power strip that cuts several devices at once can be simpler than individual plugs.