How Often Do You Need to Clean Solar Panels?

Did you know that over the past few years, solar panel purchases have increased at an unprecedented rate? With that increase in sales also comes an increase in solar panel cleanings.

The more popular solar panels become with homeowners, the more meticulous people become with their cleanings. While cleaning solar panels isn’t difficult – they only need a quick hosing down in the summer and fall to stay clean – it still takes time.

Have you ever wondered about the answer to the question, “How often do you need to clean solar panels?” We have the answer below.

This guide will teach you the benefits of cleaning your solar panels regularly as well as how often you need to get the job done. Keep reading!

Why You Should Clean Solar Panels

Solar panels need to be cleaned periodically, depending on the environment in which they are installed. Regular cleaning of the solar panel surface is necessary to achieve optimal production from the system.

Areas with dirt, debris, smog, or bird droppings, should be cleaned at least once or twice per year. Solar panels in dusty or sandy areas may must more frequent maintenance.

Cleaning should always be done with a soft cloth or a brush, and only with water or a mild detergent. It also helps them last longer. It increases their productivity, which contributes to a cleaner and more sustainable environment.

Methods for Cleaning Solar Panels

Solar panels should be cleaned regularly, but there is no definitive answer on how often they need to be cleaned. It generally depends on the location, tilt of the panels, local environment, and amount of area covered by the unit.

In dusty or arid climates, cleaning the panels once a month or bimonthly is suggested, whereas soiled areas need less frequent cleaning. Here are some methods for cleaning and installing solar panels.

Use Mild Soap Solution

Solar panels should be cleaned every few months to keep them free from dust, dirt, bird droppings, and other debris. A mild soap solution is an effective and gentle way to clean once you decide on going solar.

To cut streaks and avoid damage, use only gentle cleaning solutions such as mild soap diluted with water, or a vinegar-water mixture. It helps to dissolve the dirt or bird droppings that may have accumulated on the solar panels and may help prevent any unwanted marks or blotches.

Additionally, use only a soft cloth and clean the panels with a circular motion to protect them from scratches. If a regular hose is used to clean the panels, ensure that the pressure is low and only spot-clean following the circular pattern, using the least pressure necessary.

Use Soft Clothes or Brushes

Solar panels should be cleaned at least two to four times a year for optimal efficiency. Before cleaning your solar panels, you should inspect each module for signs of dirt and debris.

If necessary, use soft cloths or brushes to remove any foreign material from the surface, and then rinse with clean water. Additionally, check the wiring to make sure that no corrosion has set in over time.

During the summer months, the panels should be inspected more frequently as humidity, dust, and debris can interfere with the output. Be sure to consult your solar panel manufactures user manual for specific cleaning protocols to ensure the safety and efficiency of your panels.

Let the Panels Completely Cool

It is important to clean the solar panels regularly to ensure optimal functioning and get the most out of each panel. The best practice is to clean the panels at least twice a year, or more frequently if the panels are located in an area with heavy dust and airborne particles.

Make sure to always cool the panels before attempting to clean them up, as this can really damage them or even cause fires if done while they are still hot.

Additionally, make sure to use a gentle cleaning solution and soft cloths or sponges to not damage the sensitive material of the panels. With regular and safe cleaning, you should be able to get the most and how to go solar panels.

What Happens if Solar Panels Are Not Cleaned Regularly

Regular cleaning of solar panels is vital to ensure they remain free of dust and debris. It continues to produce clean, efficient, and reliable electricity.

Without regular cleaning, a build-up of dust on solar panels will reduce the amount of solar energy they absorb. It hinders the ability of the photovoltaic cells to convert energy from sunlight into electricity. 

It build-ups of dust and debris can lessen electricity production in solar panels, so it is important to keep them clean your solar panels and clear of any obstructions to ensure the most efficiency. Generally, solar panels need to be cleaned every 6–12 months depending on the location and weather conditions.

If your panels are within dry zones such as deserts, they will need to be cleaned slightly more regularly as dust and debris can gather quickly. If they are located in particularly polluted areas too, they will likely need to be cleaned more regularly.

How to Tell if Your Solar Panels Need Cleaning

Solar panels should be cleaned every quarterly to maintain their optimal efficiency. Cleaning solar panels more often in cases of dust, ashes, or debris on the panels, will benefit the amount of energy generated and keep them in good condition. Generally, dirt and dust won’t affect the energy output until it is obscuring between 10-25% of the panel’s surface.

To tell if your panels need cleaning, look at them from a distance and note any irregularities that occupy the face of the panel. If there are visual obstructions like dirt and dust, bird droppings, or tree sap, you should consider giving the panels a thorough cleaning. Make sure to use a soft brush and cleaning solution to avoid potential damage.

Learn How Often Do You Need to Clean Solar Panels Today

To conclude, it’s important to clean solar panels. Depending on the environment and system, inspections and cleanings should be conducted every 6 months to 2 years.

Keep in mind regular cleaning can maximize your solar panel’s efficiency. If you need help deciding when and how often to clean your solar panels, call a solar panel expert today!

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