Result
$3.24 active-month cost
The well pump costs about $3.24 in an average active month at the entered cycle pattern.
- Daily electricity
- 0.67 kWh
- Average active-month water
- 12,167 gallons
- Active-season electricity cost
- $19.20
- Electricity cost per 1,000 gallons
- $0.27
Estimate only. Verify wattage, utility rates, equipment ratings, and safety requirements before relying on this cost. Read the full disclaimer.
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At a glance
- Cost
- Free
- Login
- Not required
- Best use
- Estimate well-pump electricity by cycle, active month, season, and 1,000 gallons from pump watts, cycle time, daily cycling, water moved, and local rate.
- Output
- Browser result with print and PDF options
Result summary
Quick answer
With the sample inputs, this calculator returns $3.24 active-month cost. Daily electricity: 0.67 kWh. The result is an estimated operating cost from the wattage, run time, and rate you enter. Use your all-in kWh rate if you want it to line up more closely with a bill.
Instructions
How to use this calculator
Open the short walkthrough for choosing and checking inputs.
The calculator converts pump watts and cycle minutes into kWh, multiplies by daily cycles and active days, and divides cycle energy cost by gallons moved for a per-thousand-gallon comparison.
Page guide
On this page
Jump directly to the part of the calculator you need.
Calculation details
Formula and methodology
See the exact math used to produce the result.
Daily kWh = pump watts divided by 1,000 x cycle minutes divided by 60 x cycles per day; electricity cost then applies the rate and active days.
Before acting
Assumptions to check
Review the real-world details that can change the estimate.
The key inputs are Pump power, Average cycle length, Cycles per day, Active days per year, Electricity rate and gallons per cycle. The estimate assumes the entered average cycle repeats consistently; starting surge, changing well depth, pressure settings, irrigation demand, leaks, treatment equipment, motor condition, and a waterlogged pressure tank can change both energy and water moved.
More guidance Examples, methodology, and planning checks Open the worked example, review notes, reference tables, and practical next checks.
When to round up
Use measured pump watts and cycle behavior when available, and round up for pressure loss, irrigation season, leaks, water treatment, older motors, or frequent short cycling; investigate unusual cycling rather than treating it only as a cost issue.
When to use this calculator
- Estimating monthly or yearly energy cost
- Testing watts, runtime, rate, and duty cycle changes
- Comparing efficient alternatives before buying or changing use
Tips for better estimates
- Use measured watts when possible, especially for appliances that cycle on and off.
- Enter the all-in local electricity rate from a recent bill.
- Rerun the estimate for seasonal use, lower runtime, or a more efficient alternative.
How this estimate was built
This page converts pump wattage and cycle time to energy per cycle, scales by cycles and active days, applies the electricity rate, and uses gallons per cycle to show an energy-only cost per thousand gallons.
Worked example
Example inputs: Pump power: 1000 watts; Average cycle length: 2 minutes; Cycles per day: 20; Active days per year: 180 days; Electricity rate: $0.16 /kWh; Water moved per cycle: 20 gallons. With those values, the calculator returns $3.24 active-month cost. The well pump costs about $3.24 in an average active month at the entered cycle pattern.
Appliance wattage to estimated monthly cost
| 100 watts for 8 hours/day | About $3.90/month at $0.16/kWh |
|---|---|
| 500 watts for 8 hours/day | About $19.47/month at $0.16/kWh |
| 1,000 watts for 8 hours/day | About $38.93/month at $0.16/kWh |
| 1,500 watts for 8 hours/day | About $58.40/month at $0.16/kWh |
Example scenarios
- A 1,000-watt pump running for two minutes across 20 daily cycles uses about 0.67 kWh per active day.
- At $0.16 per kWh, that pattern costs about $3.24 per average active month and $19.20 across 180 active days.
- If each cycle moves 20 gallons, the energy-only cost is about $0.27 per thousand gallons; unusual short cycling should be investigated rather than budgeted as normal.
Quick reference chart
| Sample result | $3.24 active-month cost |
|---|---|
| Daily electricity | 0.67 kWh |
| Average active-month water | 12,167 gallons |
| Active-season electricity cost | $19.20 |
| Electricity cost per 1,000 gallons | $0.27 |
| Best next step | Use this estimate with the real watts, hours used, local electricity rate, duty cycle, and seasonal use. Compare efficient alternatives if the monthly or yearly cost is higher than expected. |
FAQs
Well Pump Electricity Cost Calculator questions
Can I use this as my exact bill amount?
No. Use it as a planning estimate, then compare watts, hours used, local electricity rate, duty cycle, seasonal use, taxes, and fees with your actual bill.
What rate should I use?
Use the all-in local kWh rate from a recent bill when possible, including delivery charges, riders, taxes, and usage-based fees.
How can I lower the estimated cost?
Try fewer hours, a lower wattage device, better duty-cycle assumptions, off-peak use where available, or a more efficient alternative.
Is the well pump electricity cost calculator exact?
No. It is a cost planning estimate. Actual bills depend on all-in rates, taxes, fees, runtime, duty cycle, weather, and real equipment performance.
What inputs matter most?
Pump watts, minutes per cycle, cycles per day, active season, electricity rate, and gallons per cycle determine the estimate.
Should I add a cost buffer?
Yes. Rates, fees, runtime, weather, standby power, and real-world efficiency can make actual costs higher than a simple estimate.
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Common planning mistakes
Using nameplate watts when actual draw is lower, ignoring duty cycle, using the advertised rate instead of the all-in local rate, and assuming seasonal use stays the same all year.
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