Optimal solar panel angle in Phoenix, AZ
For a fixed rooftop installation in Phoenix, the weather-adjusted optimal angle is 30° tilt facing 180° S. This generates approximately 2,233 kWh/m² per year. All numbers based on 2025 historical weather data.
| Textbook (clear sky) | Weather-adjusted | |
|---|---|---|
| Tilt | 32° | 30° |
| Azimuth | 180° S | 180° S |
| Annual generation | 2,233 kWh/m² | |
Optimal tilt adjusts from 32° (theoretical) to 30° based on 2025 weather patterns.
What this means
The textbook formula says to tilt your panels at 32° and face due south (180°). But Phoenix's actual weather shifts the optimum to 30° tilt and 180° azimuth.
These numbers are for a fixed-angle installation optimized across all 12 months. If you adjust your panels seasonally, you can gain an additional 3-5%. Read more in our seasonal adjustment analysis.
Run it for your exact address
This data is for Phoenix city center. Your roof may be in a slightly different microclimate. Our calculator optimizes for your exact coordinates.
Calculate Your Optimal Angle