As demonstrated in your wonderful video, and thank you for that, that’s great. The rain does take the pollen off what I’m confronted with is a combination of road dust and magnesium chloride, which they use to control the dust and it’s kind of set up like a little bit of greasy film, but only on the perimeters particular, in particular, the lower bottom couple inches of the module, I think I’m just gonna get out there and do it a little test on the bottom to see if I can get that film off my array is rated at 6400 W most normal 60° days I’m only seeing 5800 W coming down but 0°F day we do see 8400 W and we are off grid Dana Orzel C: 208.721.7003 E- d...@solarwork.com On Oct 23, 2023, at 8:41 AM, david quattro via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:
The encapsulant between the glass and the aluminum might be degraded by a surfactant. It’s probably a low risk if you use a gentle soap, but I heard that somewhere about 15 years ago so I thought I’d mention it. I also heard that pressure washers are too strong and can ruin the encapsulant seal.
I worked with a guy who had done installs in Arizona. He had an off-grid customer spray down their array with cold well water in the middle of the day, which shattered the module glass.
I’m sure it was an isolated incident, but it happened.
Thanks,
Will
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I don't understand the thermal shock nonsense. It routinely starts downpouring here when it's blazing hot out (sun showers) and the rain is way cooler than ground water in summer. It makes no sense. If hose water from the ground is going
to hurt solar panels, you better not put them where it rains!
I replied privately to Dana, but for the benefit of the group, it takes a heavy soiling to make any appreciable difference. I have done numerous tests at times of high pollen and found little to no benefit to cleaning solar panels. Certainly
it would not be worth paying someone to do it. Other climates may have different results. My suggestion would be to test first. Module level power electronics can provide incontrovertible proof.
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