Pool Pump Solar Calculator

Pool pumps are one of the biggest year-round loads in many homes. Enter its wattage and daily runtime to size solar offset and see annual savings.

⏱ ~15 sec🏊 Year-round load🔒 No signup

Result

3 panels (400W)
To offset this load
Annual kWh used4,380 kWh
Annual cost/savings$745

Variable-speed pumps use a fraction of the wattage of older single-speed models — checking your pump's actual rating can change this result substantially.

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Why pool pumps are a strong solar offset candidate

Panels needed = (Pump Wh/day) ÷ (Panel watts × Sun hours)

A pool pump running 8 hours a day, every day of the year, is one of the most predictable loads in a home — which makes it an easy one to size solar specifically against, separate from your whole-house system. If you're weighing a single-speed versus variable-speed pump upgrade, run both wattages through the appliance solar calculator to compare.

Frequently asked questions

Should I size solar for the pool pump separately from my house?

Not necessarily separately — most homeowners add the pump's load into their whole-home solar sizing, but isolating it like this helps you see exactly how much of your system it accounts for.

Would a variable-speed pump change this a lot?

Yes — variable-speed pumps often use 60-80% less energy than single-speed models for the same filtration by running longer at lower RPM, often cutting the solar panels needed roughly in half.

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