Do solar panels need cleaning? This is one of those questions that has two right answers! The answer isn’t a simple yes or no. There are several factors to consider that will help to determine if and when your solar panels need to be cleaned.
Regional Location
In areas like the southeastern US where pollution levels are relatively low and rain is frequent, solar panel cleaning can often happen naturally. Rainwater typically washes away pollen, dust, and grime, especially since solar panels are usually installed at an angle, allowing the rain to effectively cleanse the surface.
However, over time, a phenomenon called soiling occurs where outdoor grime accumulates on the lower edges of the panels. This buildup can hinder performance and may necessitate cleaning every four to five years.
In densely populated or industrial areas with higher levels of air pollution, annual cleaning is advisable to ensure optimal energy production. Cleaning your solar panels requires caution to avoid scratching or damaging the glass surface. Gentle cleaning with a mixture of dish soap and warm water, along with soft cloths or brushes is recommended. Avoid using strong cleansers or high-pressure washers as these can cause streaks and/or damage.
Safety When Cleaning Solar Panels
Remember, safety is paramount! Never walk on the panels or use a pressure washer as this can lead to irreparable damage. And, did you realize that glass remembers? Avoid cleaning panels when they are hot! Cooler water can cause the hot panels to suddenly cool down and the rapid temperature change can cause the glass to crack on the surface. Save this chore for the spring or fall months.
Do It Yourself Solar Panel Cleaning
If you are a DIYer, here’s what you’ll need to clean your panels:
- Ladder
- Extension pole
- Bucket or spray bottle
- Cloth/rags, a soft sponge, and/or a soft brush
- Dish soap or window cleaner
- Squeegee
- Garden hose with a low pressure nozzle
- Isopropyl alcohol if there is stubborn grime
Refer to this article for a detailed guide on how to clean your solar panels.
SVE Can Help
For corporations with large solar installations, including an annual cleaning in a maintenance package ensures consistent peak performance. For residential homeowners, if you prefer a professional touch, consider Southern View Energy for your solar panel cleaning needs. Contact us today for more information on how you can keep your solar investment in top condition and producing at its best.