Cleaning solar panels on an RV

Hard to measure, trackrig, unless your system is in the bulk charging phase.

Trackrig wrote:
OK, for those that clean them, do you notice any performance differences afterwards? And, yes I realize that from one day to the next, the sunlight isn't going to be exactly the same.

Bill

No, but I have shade tolerant panels that are a triple junction design, and no glass. Maximum output remains at 17 amps at solar noon. The panels are from 2005.

Duplicate post

OK, for those that clean them, do you notice any performance differences afterwards? And, yes I realize that from one day to the next, the sunlight isn't going to be exactly the same.

Bill

About twice a year for this guy. I use a ladder to get close then use squeegy with a sponge on one side, and mild detergent. They get DIRTY!

Be careful squirting cold water on hot solar panels. I’m a weekly cleaner...early in the morning.

I've had solar on my houses for over 7 years. The SoCal home I sold last year, I had to climb on the roof and brush them off 2-3 times a year. The NoCal home I own now is in a less dusty environment. I only get up there once a year. I use a soft bristle broom that has a hose attachment. Water flows through the handle and out the brush head. I will use it on the RV as needed.

Yes, i get on the roof and clean the solar panels every couple of weeks; dirt, dust, pollen, etc can reduce the charge to your batteries significantly! I’ve seen some solar panels completely covered !in dirt!

Hi Bill,

I wash them once per year with a soft cloth and a mild soap solution.

I wet them down and let them soak. Then I use the cloth and mild soap. Then I rinse with water.