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Solar Savings Calculator

Estimate your payback period and long-term savings from solar

Check the roof before relying on solar savings

Solar savings depend on more than panel output and electric rates. Roof age, usable roof area, shade, orientation, ventilation, and the timing of a future replacement can change the true project cost and payback. Treat this calculator as a planning estimate and verify the roof before installation.

Size your solar system →Solar installation services →Roof inspection →Roof replacement →
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How to use this calculator

Fullstack Roofing Team here—follow these steps to get a solid estimate:

  1. Enter your solar system size (kW) and total installed cost.
  2. Enter your current electric rate ($/kWh). Adjust production factor if needed.
  3. Click Calculate to see savings and payback period.

Use our Solar System Size Calculator first if you don't know your system size.

Before or after incentives—your choice for comparison

Utah average ~$0.10–0.12/kWh

~0.85 for Utah; lower for shade or poor orientation