Path-Q Solar

How does a swimming pool pump's schedule affect the value of solar?

Answer

A pool pump can increase the value of solar when it runs during hours of solar production, because more electricity is used directly instead of being exported or drawn from the grid. Shifting the pump to sunny hours may improve solar self-consumption, but the financial benefit depends on the pump's energy use, operating requirements, and the difference between import and export compensation.

Key points

  • A pump is a flexible daytime load if its required daily runtime can be scheduled around solar production.
  • Directly using solar can be more valuable than exporting it when exported energy receives less value than imported electricity.
  • A variable-speed pump may provide additional scheduling flexibility by operating at lower power for longer periods.
  • The solar system does not need to be sized solely around the pump; its load should be considered with the home's complete usage profile.

What it depends on

  • Pool pump power and daily runtime
  • Allowed operating schedule and pool-maintenance requirements
  • Hourly or seasonal solar production
  • Electricity import and export billing terms

Risks and trade-offs

  • Running the pump only during sunny hours may conflict with required circulation, heating, or filtration schedules.
  • A larger solar system may not be justified if the pump is the only substantial daytime load.
  • The value of shifting usage can be reduced if exported solar already receives nearly the same value as imported electricity.

Information you may need

  • Pump power rating or measured consumption
  • Typical daily and seasonal runtime
  • Current electricity bill and any export-credit terms
  • Solar production estimate by time of day

Your next step

What to do next

Review the pump's actual runtime and power use against an hourly solar-production estimate, then compare its self-consumption value with the cost of changing the solar system size.

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