Solar panel maintenance: Everything you need to know （II）
How to clean solar panels on roof
Although we think that the level of rainfall in the UK is sufficient to clean your solar panels, if you do choose to clean them yourself, here are some ways you can do so safely.
From ground level, spray your panels with water like you would spray a window. This will get rid of the majority of built-up dust and dirt.
If there's anything more substantial caked on your solar panels you can try increasing the water pressure by pinching the end of the hose or attaching a nozzle, and spraying it with that. If that's not enough, try a sponge or a squeegee. You don't need any special tools or cleaners, these can actually harm the protective film on the surface of a solar panel.
If you clean the panels yourself, great care should be taken over your own safety and also not to damage the solar panels.
Can I hire a solar panel cleaner instead?
Hiring a professional to clean your solar panels is a great option. You can either hire somebody on a one-off basis, or ask them to come out and clean them every twelve months or so. You might prefer this option if you want them to be thoroughly cleaned, but you're uncomfortable with the idea of working at a height.
Often, window cleaners will also offer solar panel cleaning as a service. But there are also specific companies that specialise in cleaning solar panels. Have a look around for what you can find near you.
How does extreme weather affect solar panels?
Like all kinds of electronics, solar panels are affected by extreme weather.
In freezing weather, solar panels are fine. When covered by snow, your panel can't convert light into energy, but its surface means that the snow should melt and slide off.
In very hot weather, panels produce less voltage and become less efficient.
In stormy weather, solar panels are fine. They come with a water-resistant surface that keeps them clear and clean. They don't increase the chance of your house being hit by lightning.
In windy weather, solar panels are fine. When installed properly they are safe and secure even in high winds.
This means that even if you lived somewhere that experiences extreme weather, your panels should have no additional maintenance needs.