• DNL Electrical & Solar

Squeaky Clean Solar Panels

How often do I clean them to ensure effective operation? HOW do I clean them? WHAT do I clean them with? Ah, the panel cleaning debacle. We've broken it down for you in simple terms... easy cleaning tips from us, to you, with lots of solar love.

Please note: cleaning solar panels is dependent on where you live. If your home and solar panels are positioned somewhere that receives a lot of dust, dirt and smog, then cleaning your panels once or twice a year may be a good idea.

Whether you are a seasoned solar panel cleaner or a residential solar system owner, you need the right tools to clean solar panels efficiently and safely.

A water hose from ground-level can work wonders in most cases

Rinsing rooftop solar from the ground-level with a hose is the safest cleaning method in most cases.

The water spray should fall on the solar panels like rainwater and let gravity do the heavy lifting.

When bird poo proves to be a tough opponent to your man-made shower, be patient.

A second or third pass of the water hose should remove most of it after the bird dropping has been softened by the water.

Staying on ground-level also means there is less risk of falling.

Use isopropyl alcohol to clean stubborn stains

If you are able to safely climb up the roof for a closer wash, you can use isopropyl alcohol to clean oily smudges without leaving any mark.

We don’t recommend detergent or soap to clean stubborn stains, as they tend to leave residue on panel glass that can attract more dirt in the future.

Make sure you do not stand on the solar modules under any circumstance.

Any pressure on the solar panels risks creating microcracks that can reduce energy output.

Use soft brushes and plastic scourer to make short work of scum

Only brushes specifically designed for solar should be used with water to scrub panels clean of dirt. Unsuitable scrubbing equipment like a steel brush may scratch the solar glass and create shade that harms solar production.

A plastic scourer can be used to remove caked-on scum after it has been softened with water first.

Finish up with squeegee to prevent water streaks

In the same way that squeegees should be used to finish off a clean window, squeegees can wipe solar panels dry to prevent water streaks from shading solar panels.

Sound like it's a bit much? Or perhaps an "I'll pay someone to do it" kind of job? Give us a call- we are only too happy to assist!

Happy Cleaning!!

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