Calculate your cost
Start with a representative input, then edit all three numbers.
This setup uses about 12 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 0.25 | $1.13 |
| Starting point | 0.5 | $2.26 |
| Longer runtime | 0.75 | $3.39 |
Same 800-watt input and 18.83¢/kWh rate; only runtime changes.
The quick formula
0.8 kW × 0.5 hours × $0.1883 = $0.08 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
A sump pump may sit idle for days and then cycle frequently during rain or snowmelt. A daily average is useful for budgeting, but event-based runtime from a smart plug or cycle counter will produce a better estimate.
The starting values keep this page useful before you have a label or meter reading. They do not describe every model, climate, operating mode, or household.
What changes the cost?
- 01
Motor horsepower, pumping head, and discharge resistance
- 02
Rainfall, groundwater level, and drainage around the foundation
- 03
Cycle frequency, float setting, and check-valve condition
Ways to spend less
- Keep the pit, float, and discharge path clear.
- Correct short cycling and a failed check valve promptly.
- Direct exterior drainage away from the foundation where permitted.