Well Pump Electricity Cost Calculator
Estimate private well-pump electricity cost from watts, daily runtime, and electricity rate.
Calculate well-pump electricity cost
How this calculator works
A well pump runs to refill a pressure tank or maintain system pressure. Household water demand, irrigation, well depth, pressure setting, pump efficiency, leaks, and pressure-tank condition affect runtime.
Rated horsepower is not equal to electrical input. Use measured watts, amperage with the correct voltage and power factor, or service documentation.
A 1,500-watt pump running a total of one hour per day at $0.18/kWh costs about $0.27 per day and $8.10 per month.
How to get a more accurate estimate
- Measure cumulative runtime rather than guessing from water gallons.
- Investigate frequent cycling, leaks, and pressure-tank problems.
- Calculate irrigation separately if it dominates seasonal pump use.
Frequently asked questions
Can I convert pump horsepower directly to watts?
Horsepower describes mechanical output; electrical input is higher and depends on motor efficiency and operating conditions.
Why is my pump cycling frequently?
Leaks, pressure-tank issues, controls, or system sizing may be involved and should be evaluated by a qualified professional.
Does this include water treatment?
No. Softeners, filters, aerators, and treatment equipment can create separate water or electrical loads.
Results use the values you enter and the formula shown above. Real bills can include taxes, minimum charges, tiers, time-of-use pricing, cycling losses, and other adjustments. Use a recent bill or a plug-in energy meter when accuracy matters.