Pool-pump electricity cost calculator
Calculate pool-pump electricity cost from motor input power, filtration hours, weekly schedule, and your electricity price.
Worked calculation
A complete pool pump example
1.100 kW is multiplied by scheduled time and the 100% active-runtime assumption. The inputs are examples, not claims about every device. Replace each one with the label, meter reading, schedule, and tariff that apply to you.
Pump cost = input kW × filtration hours × days × tariff1100 W · 8 hours/day · 7 days/week · 100% active
- Monthly energy
- 266.9 kWh
- Monthly cost
- US$48.05
- Annual cost
- US$576.58
Transparent method
The calculation
Pump cost = input kW × filtration hours × days × tariffPool pumps can become large annual loads because they run for many hours. Variable-speed pumps require a measured or documented average input at the selected speed.
Read the full methodology →Sensitivity check
Run three scenarios.
Short filtration windowTest the lowest runtime that maintains water quality.
Typical scheduleUse the timer's actual daily programme.
Peak seasonIncrease runtime for hotter or heavily used periods.
Use the result well
What can change the answer?
- Water-quality requirements come before energy savings.
- Motor horsepower is not always electrical input power.
- Variable-speed power falls non-linearly with speed.
Calculation standards
Visible inputs. Reproducible results.
WhoPowerCost Lab's research desk maintains the formulas, market notes, and worked examples.
HowEnergy, tariff, and behavioural assumptions stay separate so readers can replace one input without hiding the others.
WhyThe page exists to answer an operating-cost decision. Advertising never changes a formula, default, or recommendation.