Runtime is highly seasonal
A sump pump may sit idle during dry weather and run frequently during storms or snowmelt. For a realistic estimate, use the active pumping time rather than the time the pump is available.
Outdoor & Garage
Sump Pump Electricity Cost Calculator
An 800 watt sump pump costs about $0.14 to run for 1 hour at $0.17 per kWh.
Estimated energy use 0.00 kWh/day
Per day $0.00
Per month $0.00
Per year $0.00
Quick estimate
$0.14 per day
This uses 800 watts, 1 hours per day, and an electricity rate of $0.17 per kWh.
Sump pumps run intermittently, so rainy periods and groundwater conditions drive total cost.
Typical sump pump wattage
Many sump pump units fall around 800 watts, with a rough range of 400 to 1500 watts. Check the product label, user manual, or manufacturer specifications for the most accurate number.
| Estimate | Watts | Hours per day | Daily cost | Monthly cost |
|---|---|---|---|---|
| Low estimate | 400W | 0.50 | $0.03 | $1.02 |
| Typical use | 800W | 1 | $0.14 | $4.08 |
| High estimate | 1500W | 1.50 | $0.38 | $11.48 |
How the estimate works
Convert watts to kilowatts, multiply by the number of hours used, then multiply by your electricity rate.
Cost = Watts / 1000 x Hours Used x Electricity RateFor this sump pump example: 800 / 1000 x 1 x 0.17 = $0.14 per day.
Sump Pump cost factors
These details make this estimate more useful for real-world use.
Frequent cycling can signal a problem
If the pump starts and stops constantly, the pit size, float switch, check valve, or drainage conditions may be affecting runtime. A clear discharge line and working check valve can help avoid unnecessary pumping.
How to lower the cost
Keep the pit, float switch, and discharge line clear so the pump runs efficiently.
The easiest way to improve the estimate is to replace the default values with your actual wattage, average runtime, and local electricity rate.
About these numbers
Wattage ranges are practical planning estimates for common household appliances. Actual use can differ by model, age, settings, room conditions, and maintenance.
Sump Pump electricity cost FAQ
How much does it cost to run a sump pump?
An 800 watt sump pump costs about $0.14 to run for 1 hour at $0.17 per kWh.
What wattage should I use?
Use the wattage printed on the appliance label when possible. As a starting estimate, this page uses 800 watts and shows a common range of 400 to 1500 watts.
Why is my actual bill different?
Electricity bills include many appliances, fees, taxes, seasonal changes, and utility rate structures. This calculator estimates appliance energy cost only.
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