As you may know by now, a small amount of shadow in one of your solar panels can affect the efficiency of the whole solar energy installation, so cleaning your solar panels more frequently is the easiest way to make sure that your solar installation works at highest efficiency possible.
You really don’t need to clean solar energy panels very often, in my opinion, I think to do that once a year is more than enough.
If you live in an area with a lot of particulates – dust, tree pollen, highway pollution, AND an area that goes through long periods of no rain (I’m talking 4–6 months or more), you will be able to increase the output a little bit by hosting the panels down (I’m assuming we are talking about a residential system).
So here is the best way to clean solar energy panels
Don’t use high pressure – you might damage something. At most I would do this once a year, during a peak of no-rain.
It is proven that you can get a couple percentage points of additional energy for a few months by doing this. And, the panels look a bit nicer (relevant if they are visible).
If there are some large bird droppings, you might want to get up there and scrub that off – I would just use water and a non-abrasive cotton cloth.
Your safety is the most important thing so if you can do this from the ground, that’s the best scenario. If you have to actually get up on the roof, consider calling in a cleaning service. Those couple of pennies of extra energy is not worth killing or maiming yourself. It’s very easy to slip and fall off a roof.
If you do go up there, while you are there, check the condition of all the wiring. It’s not unusual for critters to get up there and start chewing on things.
Make sure none of the wirings is touching the roof – tuck it back in. A lot of installers use zip-ties, which if they use cheap ones, won’t hold up for long in the California or Arizona sun.
For me that is the best way to clean solar energy panels at your home, if you have any method do you think it is better for cleaning solar energy panels let me know in the comment section below.