
One of the many great things about solar panels is, once they’re installed, you basically sit back and leave them to it!
They have no moving parts, no external power source, and they last for years, allowing you to enjoy clean, free energy without having to worry about it.
In general, solar panel cleaning isn’t necessary, but occasionally, your panels may need to be washed, especially if there’s been no rain and a lot of smoke in the air (see the recent bushfires).
Before starting, always check the manufacturer’s instructions on how to clean solar panels, but for the most part, it’s all pretty simple.
Stick with the basics when cleaning solar panels
When it comes to cleaning, think of your solar panels like your car; easy does it.
Any damage or scratches to your panels will result in a reduction of their efficiency in making energy, so be gentle.
Warm, soapy water and a soft cloth or sponge is adequate, and you definitely don’t need any harsh cleaning substances. The chemicals in the ingredients damage the panels on a microscopic level, leading to corrosion and a decrease in efficiency.
Remember, your solar panels are made of glass, so the more transparent they are, the more efficient they are and the more money you will save.
How to clean solar panels safety
More important than cleaning them correctly is how to clean solar panels safely.
By their very nature solar panels are usually high up, usually on rooftops, so you should only attempt to clean yours if it’s safe to do so.
If not, then hire a professional cleaning company to do it for you. The company that installed your solar system originally will most likely offer this service, and if they don’t, they should be able to recommend someone who does.
Also bear in mind that cleaning with soap and water can make the area slippery, and if you’re using a hose, there’s a chance it might pull you off the roof as you climb back down.
Never attempt to climb onto a roof without the proper safety equipment.
When to clean your solar panels
The best time to clean solar panels is when they’re not being used.
They heat up pretty quickly and can get very, very hot under the Australian sun, so if you’ve decided they need a wash, then either wait for an overcast day or do it early in the morning before the full power of the sun hits.
It’s also not recommended you clean them at night because you need to see what you’re doing!
Do you really need to clean solar panels?
If you live in an area that gets occasional rain, then you probably don’t have to worry about how to clean solar panels at all.
As the old saying goes, “if it ain’t broke, don’t fix it”, and solar panels are a great example of that.
You may have noticed a drop in energy production and think your panels need a clean, but there might be other reasons for the decrease in efficiency.
Solar panels only work when the sun shines on them, so make sure there are no trees blocking the sunlight or overgrown vegetation nearby if they’re on the ground.
If there’s a problem with your energy production most of the time it’s the inverter, not the panels, so check the system overall before you grab a bucket and sponge.
Solar panels only need to be cleaned if you live in the outback or by the beach and sand/dust builds up over time.
If you think your solar panels need to be cleaned, give us a call and we can offer a system check and clean.
Questions about solar power?
Low maintenance technology which gives you free, natural energy – it’s almost too good to be true.
If you have any questions about solar panels or why you should make the switch, then please don’t hesitate to contact us and speak to one of our engineers.
We can talk you through any questions you may have, from what is the best type of home solar system for your specific need to how to clean solar panels correctly.
All our solar systems can be tailored to your budget, energy needs, and house size, and we only use the very best in solar panel technology from the world’s most innovative and reliable brands.
All our work is carried out by Clean Energy Council (CEC) accredited and qualified license which means our installers are up to date with any changes in the industry, giving you peace of mind for your home solar system.

Bright Earth Solar offers a range of exceptional solar products, helping you save money while doing your bit to save the planet. We keep you up to date with new technology, innovation and trends in renewable energy.