The Cost of Solar Panel Cleaning in California (2025 Detailed Pricing Guide)

Average Cost: $150-$350 per residential cleaning in Southern California. Commercial systems: $0.50-$1.50 per panel.

Residential Solar Cleaning Costs by System Size

Small System (10-15 panels / 3-5 kW)

Cost: $150-$220
Time: 1-1.5 hours

Medium System (16-30 panels / 5-8 kW)

Cost: $220-$300
Time: 1.5-2.5 hours
Most Common residential size

Large System (31-50 panels / 8-15 kW)

Cost: $300-$450
Time: 2.5-4 hours

Additional Cost Factors

Maintenance Plans & Discounts

Quarterly Plans (Save 15-20%):

Standard Price: $250/cleaning × 4 = $1,000/year
Plan Price: $850/year ($212.50/cleaning)
Savings: $150/year + priority scheduling

Commercial Solar Cleaning Costs

Pricing Structure:

Small Commercial (50-100 panels): $400-$650
Medium Commercial (100-300 panels): $650-$1,500
Large Commercial (300+ panels): $1,500-$5,000+

Volume discounts available for quarterly maintenance contracts.

ROI: Is Cleaning Worth the Cost?

Average 6kW System in High-Pollution Area (LA/Downey):

Annual Production Loss (Dirty): 2,400 kWh
Lost Revenue: $720/year (at $0.30/kWh)
Quarterly Cleaning Cost: $850/year
Net Savings: Break-even + warranty protection + panel longevity

Over 25 years: $18,000 in production savings + avoiding warranty voiding

What's Included in Professional Cleaning?

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