How often should you clean your solar panels?
Frequency depends on climate and dust. Get simple schedules and safety tips.
Quick take
2–4× per year in mild climates; monthly in dusty/pollen-heavy areas.
How to use the calculator
- Open the calculator linked below.
- Enter the numbers that match your setup.
- Use our rules of thumb to sanity-check the result.
Rules of thumb
- Start with daily kWh ÷ peak sun hours.
- Apply a 15–25% derate for losses.
- Round up to the next standard panel size.