Solar Panel Cleaning

A popular question we receive from solar home owners is ‘what is the best way to clean my solar panels?’.

In short here is the procedure:

  • It is recommended to wash solar panels in early morning or late afternoon to avoid thermal shock on the glass due to sudden cooling.
  • Always observe safe working practices when accessing the roof.  Use a professional if there is any doubt.
  • Firstly inspect the solar panels for any damage or breakage, if the panels are compromised do no proceed and contact your installer.
  • Use de-ionized water if possible, but otherwise rain or tap water is ok.
  • Wash the panels and use a brush or sponge to remove dirt and dust.
  • Rinse again and allow to dry naturally

REC have produced a easy-to-understand guide on this topic, you can download the file here.

We generally recommend cleaning during winter/spring, when it probably hasn’t rained for a while.  This is before the peak spring solar generating season.