[RE-wrenches] Cleaning PV mods

[Jason Szumlanski]

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.

Jason



On Fri, Oct 20, 2023, 4:21 PM Dave Tedeyan via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi Dana,
>
> See attached from REC. I would imagine these guidelines would apply to all
> modules.
> Cheers,
> Dave
>
> On Fri, Oct 20, 2023 at 3:56 PM Dana Orzel via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Hey ally ‘all,
>>
>>
>>
>> Ok bad solar installer! 7 years & I have never cleaned my modules & live
>> on a dirt road. Yeah rain does a good job with the dust but there is a film
>> mostly on the edges.
>>
>>
>>
>> What does everyone do for cleaning?
>>
>>
>>
>> My array is 16’+ tall on a hill side. I have a pressure washer & was
>> going to pick up a large sponge type mop & mount it on a painters extension
>> pole.
>>
>>
>>
>> Good Biodegradable cleaning solutions?
>>
>>
>>
>>
>>
>> _________________________________________________________
>>
>> Dana Orzel                GREAT SOLAR WORKS!
>>
>> C – 208.721.7003      E – dana at solarwork.com
>>
>> W - www. greatsolarworks.com     www.solarwork.com
>>
>> *“Responsible Technologies for Responsible People since 1988!”*
>>
>>
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>
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> Dave Tedeyan, P.E.
> Owner | Sungineer Solar
> p: he | him | his
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