Why Cleaning Your Solar Panels During Removal and Reinstallation Is a Smart Move

When it’s time to replace your roof or relocate your solar panels, one step is often overlooked but incredibly valuable: cleaning the panels. If you’re already planning a removal and reinstallation, it’s the perfect time to clean your solar array thoroughly—and it’s not just about looks. It’s about performance, longevity, and return on investment.

🌞 1. Cleaning Improves Efficiency — Gains of 5% to 25%

According to the National Renewable Energy Laboratory (NREL), soiling (the buildup of dirt and dust) can reduce solar panel efficiency by 2% to 7% under typical conditions, and by up to 25% in extreme environments like deserts, farmlands, or cities with high pollution.

In dusty or humid climates like Florida, annual losses of 5% to 10% are common. If your system offsets $150/month in electricity, a 10% soiling loss means $15/month lost—adding up to $180 per year, or $1,800 in 10 years.

Cleaning during removal restores maximum output right before reinstallation, ensuring you recapture that lost performance immediately.

⚖️ 2. Safer and More Effective Than Cleaning On the Roof

Cleaning mounted panels is risky—slippery surfaces, steep pitches, and the potential to damage hardware or wiring. During removal, however, panels are already off the roof, making them fully accessible for a safe and thorough clean without compromising your roof or safety.

• No risk of falling or slipping
• No runoff into roofing materials
• No risk of damaging mounts or seals

🔍 3. Reveals Hidden Panel Damage

Cleaning provides a clear view of your panel surfaces, helping spot issues such as:

• Microcracks or cell fractures
• Delamination or bubbling
• Burn marks or hotspots
• Water ingress or discoloration

These defects are often invisible when panels are dirty or installed. Early detection helps preserve warranty coverage and system longevity.

🏡 4. Boosts Property and System Value

According to Zillow, homes with solar systems sell for an average of 4.1% more than comparable non-solar homes.

Clean, well-maintained panels signal quality to potential buyers and increase curb appeal. If you’re selling or refinancing, a clean solar system strengthens your property’s value proposition.

🤝 5. It’s Cost-Effective When Bundled With Labor

Standalone solar panel cleaning typically costs $150–$300. However, when you’re already paying for panel removal and reinstallation (usually $1,500–$3,000), adding cleaning often costs less than $100.

This minor addition can restore 5–20% more output and improve overall return on investment.

✅ Final Thought

Soiling is a silent energy killer. Don’t reinstall dusty, underperforming panels when you’re already doing the work to detach them. Take advantage of this opportunity to clean, inspect, and restore performance—boosting your system’s efficiency, longevity, and resale value.

Need professional removal, reinstallation, and solar panel cleaning?
Click here to request a free custom quote — our cleaning service is included with every project.