Build up on the panels can occur over time and impact on the amount electricity generated by a module. Grime doesn’t need to cover an entire panel to have an effect on performance.
Causes of Dirty Solar Panels
Optimise the efficiency and performance of your solar panels, and keep more electricity dollars in your pocket, by inspecting and cleaning your panels at least once a year. An annual clean is best done before summer.
To keep check on your solar panels, you can hire a licensed, professional solar panel cleaner to clean your solar panels, conduct a preventative maintenance inspection and provide a maintenance log sheet to ensure your solar system is operating at its maximum capacity. Alternatively, an occassional hose off can remove build up that has settled on the solar panels, and The Energy Matters website also has good tips for thorough DIY Solar Panel Cleaning.