How do you clean dust off solar panels?

One of the most common ways to clean dust off solar panels is to spray them with water. But that’s a huge waste of water, especially in desert settings, where there are a lot of solar farms. The MIT scientists note in their new study, which is published in Science Advances:

Can a waterless cleaning method remove dust from solar panels?

Dust that accumulates on solar panels is a major problem, but washing the panels uses huge amounts of water. MIT engineers have now developed a waterless cleaning method to remove dust on solar installations in water-limited regions, improving overall efficiency. Image courtesy of the researchers.

How do you keep solar panels clean?

There are several ways to keep solar panels clean, from manual washing to fully automated technologies. While rainwater can remove some of the grime that collects on panels over time, it can also cause dirt to accumulate at the bottom of the panels, and it isn’t sufficient to remove heavy pollution.

How do you remove algae from solar panels?

Using a soft brush, remove any loose algae from the solar panel. Gently hose down the panel. In a spray bottle, mix a solution of 1/2 tsp biodegradable soap, 2 cups water and 1/4 cup vinegar. Spray the solution onto the solar panels and rub with a clean cloth or sponge.

Can you use deionized water to clean solar panels?

Solar maintenance companies like US-based Bland Company and Premier Solar Cleaning have found that using deionized water with a rolling or vehicle-mounted brush allows them to clean panels without using soap, which leaves a residue that not only shades panels but attracts dirt.

Can static electricity keep dust off solar panels?

According to the researchers, static electricity can keep dust off solar panels, and is a much more sustainable solution. And that’s important, because as the researchers note, for example, “Dust accumulation of 5 mg/cm 2 corresponds to almost 50% loss in power output.” Effect of dust accumulation on solar panel power output.