Understanding and Preventing Lichen Growth on Solar Panels
- tom873172
- Mar 26
- 2 min read
Lichen growth on solar panels is a serious issue that can significantly reduce efficiency and energy output. These organisms, which form from a combination of fungi and algae, thrive in damp, organic-rich environments, and once they take hold, they are difficult to remove. Left unchecked, lichen can cause shading, hotspots, and permanent damage to solar panels, reducing their lifespan and effectiveness.
What Causes Lichen Growth?
Lichens require algae to establish, which means that poor maintenance and moisture retention create the perfect conditions for their spread. If solar panels aren’t regularly cleaned, dirt and algae build up, allowing lichen to develop. This is particularly common in areas with high humidity, near trees, or on panels that have been left unmaintained for extended periods.
How Lichen Affects Solar Panel Performance
Reduced Energy Output – Lichen creates shading on the panel surface, blocking sunlight and decreasing efficiency.
Hotspot Damage – Uneven shading can cause hotspots, which damage photovoltaic cells and shorten the panel’s lifespan.
Difficult & Costly to Remove – Lichen bonds strongly to the glass surface, meaning that removal can be difficult and, if done incorrectly, may cause scratches or panel damage.
Preventing Lichen Growth
Prevention is always better than cure when it comes to lichen on solar panels. Clearsol recommends:
Regular Solar Panel Cleaning – Scheduling routine maintenance helps remove dirt, dust, and algae before lichen can take hold.
Managing Surrounding Environment – Trimming nearby trees and reducing moisture retention on the panels can help prevent algae growth, which in turn reduces the risk of lichen.
Applying Anti-Lichen Treatments – Specialist treatments can prevent regrowth and keep panels operating at peak efficiency.
Safe & Effective Lichen Removal
If lichen has already formed, it’s crucial to use the right removal techniques to avoid damaging the panels. Clearsol’s specialist solar panel cleaning services use:
Non-Abrasive Cleaning Agents – Designed to break down lichen without scratching or etching the glass surface.
Professional-Grade Cleaning Equipment – Avoids high-pressure washing or harsh scrubbing, which can weaken panel coatings.
Expert Technicians – Our team ensures a safe and thorough cleaning process, restoring solar panels to optimal performance.
A Word from Clearsol’s Director, Al Hicks
“Many people underestimate the impact that lichen can have on their solar panels. If left untreated, it can cause long-term damage and seriously affect energy production. At Clearsol, we help businesses and homeowners stay ahead of the problem with regular maintenance and expert cleaning solutions, ensuring their solar investment is protected and performing at its best.”
Lichen may be a common issue, but with proactive maintenance and expert care, it can be prevented and managed effectively. If you’re concerned about lichen growth on your solar PV system, get in touch with Clearsol today for a professional cleaning assessment.