The Importance of Solar Cleaning
Solar PV panels generate energy by allowing light into their solar cells and the more light that hits a panel, the more power it will generate. The upwards angle of solar panels combined with the fact that they are often on rooftops, means that they are prone to getting dirty with bird droppings and dust.
Rainwater Isn’t Enough
A common misconception is that this dirt washes away with just rain, but this is not enough to clean the panels as rain contains airborne dust particles which settle and attach to the surface after the rainwater evaporates. The build-up of dirt on solar panels reduces the amount of light hitting them to generate power. Just like if you were to leave your car windscreen unwashed for months and only relied on rain to clean it, dirt would build up and you would lose visibility pretty quickly.
Performance & Warranty
In order to get optimum performance and the best return on your investment, it is important that your solar panels are cleaned regularly and properly. This can also help you to get the most out of the government feed-in tariff when selling energy back to the grid.
Some solar panel manufacturers and installation companies have also made regular cleaning a condition for their warranties. If you have any problems with your solar panels for example, they might not be covered by your warranty if you cannot provide proof of regular and professional cleaning.