How Many kWh Does a Smart Speaker (Alexa/Google Home) Use?
Smart Speaker (Alexa/Google Home) energy cost calculator — see your exact daily, monthly, and yearly electricity cost.
US national average. Edit for your local rate.
Daily Energy Use
0.14
kWh / day
Monthly Cost
$0.81
Yearly Cost
$9.90
Smart Speaker (Alexa/Google Home) — Cost Breakdown
| Period | kWh Used | Cost ($) |
|---|---|---|
| Per Hour | 0.0060 | $0.0011 |
| Per Day | 0.14 | $0.03 |
| Per Month (30 days) | 4.32 | $0.81 |
| Per Year (365 days) | 52.56 | $9.90 |
Running a smart speaker all day uses about the same energy as keeping a single LED bulb on for 14 hours.
3 Ways to Cut Your Smart Speaker (Alexa/Google Home) Energy Bill
- 🌱
Mute the microphone when not in use — the always-listening processor draws slightly more power in active listening mode.
- 💡
Reduce the display brightness (if it has a screen) or set it to auto-dim based on ambient light.
- ⚡
Disable ambient sound features (white noise, rain sounds) that keep the speaker playing audio 24/7.
Smart speakers are solid-state devices with no motors, drawing very low, consistent wattage at all times.