Calculate your cost
Start with the example below, then replace the wattage, daily runtime, and rate with the numbers for your robot vacuum.
This setup uses about 2 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 1 | $0.17 |
| Page example | 2 | $0.34 |
| Longer runtime | 3 | $0.51 |
Same 30-watt input and 18.83¢/kWh rate; only runtime changes.
Formula for the page example
0.03 kW × 2 hr × $0.1883 = $0.01 per day
Convert watts to kilowatts, multiply by the active hours used each day, then multiply by the electricity price in dollars per kWh. Multiply the daily result by 30 for the monthly estimate shown above.
How to read this estimate
Because they charge slowly over many hours and use low-wattage motors, their overall electricity cost remains quite low.
Use this as a baseline until you can check the label or measure the robot vacuum directly. Model, settings, condition, climate, and household routine can all change the result.
What changes the cost?
- 01
Battery capacity
- 02
Cleaning frequency
- 03
Standby power on the base station
Ways to spend less
- Unplug the base station if you will be away for weeks.
- Empty the bin to reduce motor strain.
- Schedule runs during off-peak hours if on a TOU rate.