This calculator estimates how much energy and money you may be losing each month due to dust and dirt reducing your solar panel efficiency. Calculations are based on your system size or panel area, your local electricity rate, and your estimated energy loss.
Electricity rates used in this tool are based on data from SDG&E’s Joint Rate Comparison as of February 2025.
To learn more about why solar panel cleaning is paramount to keeping both your solar system's performance high and savings, read Saturn Solar Cleaning's blog post: Leaving Money on the Table!
Estimate how much dirty panels could be costing you each month or year.
⚠️ This tool provides an estimate based on average production assumptions. Actual output may vary depending on panel type, shading, angle, location, and soiling pattern.
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