I have only had them for a couple of months, so I haven't got that far yet. From some research I have done, I should hose them off once a year. The installer told me that I could probably just hose them off from the ground level, but I'll probably hop up on the roof and hose them off. I'll probably do it next spring for the first time.

[–] Flashback956@feddit.nl 40 points 1 year ago (3 children)

Be aware to not hose them off when they have been exposed to sunlight for a certain amount of time. Solar panels become extremely hot and cold water will crack the glass panel.

[–] dandroid@dandroid.app 21 points 1 year ago

Thanks for the reminder! The installer also warned me about this.

[–] bobs_monkey@lemm.ee 10 points 1 year ago (1 children)

Yup, first thing I n the morning is usually best.

[–] Rubanski@lemmy.world 1 points 1 year ago

Water your panels like your garden

[–] LifeInMultipleChoice@lemmy.ml 1 points 1 year ago (1 children)

Never lived anywhere that can get cold water from a hose tap when it was hot outside. Rain water is always colder

[–] Mouselemming@sh.itjust.works 3 points 1 year ago

Wouldn't rain rinse them at least once a year? Unless you live in the desert of course.

[–] BB69@lemmy.world 8 points 1 year ago

I’ve had mine for right at a year. Haven’t done anything, I’ll consider cleaning if I see efficiency taper off

[–] SpaghettiYeti@lemmy.world 3 points 1 year ago

I've had panels for 3 years now. There's no maintenance needed. Performance is monitored via app and the company that installed them for me will contact me if something is wrong with them for the next 25 years.