Solar System Size Calculator
Find out how many solar panels you need based on your electricity use
How to use this calculator
The Master Roofer here—follow these steps to get a solid estimate:
- Enter your average monthly electric bill (or monthly kWh).
- Adjust electric rate and peak sun hours if needed (defaults are Utah-friendly).
- Click Calculate to see recommended system size, panel count, and cost range.
Use your last 12 months of bills and average them for the best estimate.
Utah average ~$0.10–0.12/kWh
Utah ~5.5–6.2; adjust for shade or location