Last Updated: 2026-07-14
The average home has 20+ connected devices — each one drawing power 24/7. Here's the exact cost of every smart device, and which ones are worth keeping plugged in.
Smart devices promise efficiency — but they're always listening, always connected, always drawing power. A single smart speaker draws 2-5W continuously. That's $3-$8/year per device. Multiply by 10-20 devices in a modern smart home, and you're looking at $60-$160/year just for "smart" convenience. For a baseline before any project, see our guide to the best home energy monitors.
Worth the drain: Smart thermostat (saves 10-15% on HVAC), smart security (prevents break-ins), smart smoke detectors (safety). These pay for themselves many times over.
Questionable: Smart speakers in every room, smart fridge (you don't need WiFi on a fridge), smart mirrors. The convenience rarely justifies the 24/7 drain.
Not worth it: Smart plugs on devices that are rarely used, multiple streaming devices in guest rooms, smart water features with low usage.
To measure rather than estimate any of this, a whole-panel monitor shows you each circuit in real time. See our Refoss vs Emporia Vue vs Sense comparison for which one suits your panel.
1. Use smart power strips for entertainment centers — cut power to peripherals when the TV is off.
2. Schedule smart speakers — use sleep mode or smart plugs to cut power overnight.
3. Disable WiFi on devices you control locally (smart TVs, fridges).
4. Consolidate — one smart speaker per floor, not per room.
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