Arizona (AZ)
How dirt and soiling reduce your solar output in Arizona
Panel soiling — the accumulation of dust, pollen, bird droppings, and other debris — is one of the most common and fixable causes of solar energy loss. In arid regions, soiling alone can reduce output by 5–15%. Here's what you should know.
How Arizona's climate affects this issue
Arid regions have the highest soiling losses nationally — dust accumulation can reduce output by 5–15% without regular cleaning.
Climate
hot arid
Sun hours
6.5 hrs/day
Soiling risk
high
Solar adoption
high
Related issues
Panel soiling
Dust, pollen, bird droppings, or debris accumulation reducing light absorption. More severe in arid or agricultural areas.
Typical loss: 2–15%
Self-check tip:
Visually inspect panels from ground level. If you can see a visible film or debris, cleaning may restore 2–7% production.
Check your Arizona solar system
Use our free Solar Loss Checker to estimate how much energy your system in Arizona may be losing.
Check my systemBased on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
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