What Size System Do You Need?

The Solar Calculator provides the you with a baseline estimate of the capacity, in kilowatts (kW) required to power your home. This estimate is based on historical data captured from the utility provider.

  1. Collect a 12-month history of electrical usage, in kilowatts (kW). Add the kW’s together and divide by 12 to calculate the monthly average.
  2. Enter the monthly average number into the calculator.
  3. The calculator provides the size of the system required to provide the power for the home. (This is just an estimate. Other factors, such as type of roof and amount of direct sunlight, can change your specific needs.)

Home Solar Calculator

kW / month
Size of Solar System Needed
- kW

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