There are appliances in your home that consume electricity constantly, even when you're not using them. TVs on standby, chargers plugged in with nothing attached, old lamps forgotten in the hallway. A smart plug can cut all of that automatically — and finally show you what it's actually costing you.
These are probably the simplest smart home devices to install and the quickest to pay for themselves. You plug it into a regular wall outlet, connect your appliance to it, and control it from your phone.
What a Smart Plug Can Do
Remote control: turn any appliance on or off from your phone, wherever you are. Forgot to turn off the iron? Fixed in ten seconds.
Scheduling: set precise timers. Coffee maker starts at 7 AM, living room lamp turns off at 11 PM. Once configured, you don't think about it anymore.
Energy monitoring: models with energy tracking show you in real time how many watts an appliance uses and how much it cost you this month. It's often surprising.
Voice control: compatible with Alexa, Google Home, and Apple HomeKit for most models. "Alexa, turn off the coffee maker" works as soon as it's set up.
Where to Use Them First
Some appliances are particularly wasteful on standby or tend to get left on:
- TV: a TV on standby can consume 5–15 W continuously
- Coffee maker or kettle: schedule automatic shutoff after 30 minutes
- Chargers and adapters: often plugged in empty, they still draw power
- Non-smart lamps: turn any lamp into a connected lamp
- Space heaters: make sure they don't run through the night
Choosing the Right Model
Key criteria: compatibility with your voice assistant, whether it includes energy monitoring, form factor (some models block the adjacent outlet), and app reliability.
Kasa (TP-Link) smart plugs are consistently highly rated for their intuitive app and Matter compatibility — the new standard that lets you use one device with Alexa, Google Home, and Apple HomeKit without locking yourself into a single platform.