Solar System Sizing Tool — Phoenix, AZ
Use our interactive tool to determine the right solar system size for your home in Phoenix. Adjust your monthly electricity bill and home size to see a personalized recommendation based on local solar conditions.
Size Your Solar System
$
Local rate: 14.5¢/kWh
ft
Peak sun hours: 6.6h/day
6
System Size (kW)
16
Panels Needed
288
Roof Space (sq ft)
$17,134
Est. Cost
14,483
Annual kWh
100%
Energy Offset
Energy Offset100% of your usage covered by solar
0%50%100%
How We Calculate Your System Size
Your recommended solar system size is based on several factors specific to Phoenix, AZ:
- Electricity usage: Your monthly bill is converted to annual kWh consumption using the local rate of 14.5¢/kWh.
- Solar irradiance: Phoenix receives an average of 6.6 peak sun hours per day, which determines how much energy each panel produces.
- Panel specifications: We use 400W panels, each requiring approximately 18 sq ft of roof space, which is standard for modern residential installations.
- Roof space: The total roof area needed depends on the number of panels. The average home in Phoenix is 1,950 sq ft.
Solar at a Glance: Phoenix, AZ
14.5¢
Avg Rate / kWh
6.6h
Peak Sun Hours / Day
6 kW
Avg Recommended Size
16
Avg Panels Needed
$17,134
Est. Cost (before incentives)
Arizona Public Service (APS)
Utility Provider
Other Cities in Arizona
Related Resources
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