Do solar panels have to be turned off before cleaning?
Posted by Cathy Debenham on 9 July 2013 at 10:40 am
A reader asked whether solar panels needed to be turned off for cleaning. The following answers to this question were crowd-sourced from Twitter:
@YouGenUK Even if you switch off the DC isolator next to the inverter the modules are still live. Do it at night if you are worried! said Stuart Houghton of @Abacusrenewable1h
@YouGenUK In my experience no need to 'turn off' before cleaning (you can't really if it's not night!), but be careful of electrical hazards, said @EarthOrgUK1h
Then our reader came back with the following comment: I would find it difficult to clean at night, so how much does temperature of panels on a cloudy but warm day, and cleaning water temp need to be considered, ie half bucket of rain water left standing, on just warm to touch panels, just to get rid of a half dozen bird spots on 3 panel.
Which StarfishPV answered:
@YouGenUK @Abacusrenewable @EarthOrgUK and not in direct sunlight. Heat + cool water can shatter glass etc (@StarfishPV12m)
Do you clean your solar PV panels? If so, how often, and how? And have you measured the difference it makes? We'd love to hear your stories in the comment section below (or email them to us).
Information about cleaning solar panels on YouGen
Photo credit: visdiaBy Cathy Debenham
If you have a question about anything in the above blog, please ask it in the comments section below.
3 comments - read them below or add one