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<div>I did a little case study on an array (10kw Sanyo) in which the upper half was washed with softened water only, and the lower half was/is washed with softened water and rainx solution. </div>
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<div>The results of over a 12 year period have been zero difference in output between the two halves, but the upper half starts to show a soiling build up about 6 months earlier than the bottom. </div>
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<div>Rainx had (possibly still does) a statement recommending against using the product to clean modules. With no explanation why.</div>
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<div>I'm not necessarily recommending rainx, but that's my experience.</div>
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<div>W</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> RE-wrenches <re-wrenches-bounces@lists.re-wrenches.org> on behalf of Corey Shalanski <coresolar@gmail.com><br>
<b>Sent:</b> Sunday, August 16, 2020 7:43 PM<br>
<b>To:</b> re-wrenches@lists.re-wrenches.org <re-wrenches@lists.re-wrenches.org><br>
<b>Subject:</b> [RE-wrenches] Cleaning Modules</font>
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<div dir="ltr">Greetings Wrenches,
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<div>I posed this question to the group a number of years ago and would like to ask it again, in case any new members have new ideas or any elders have adjusted their approach.</div>
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<div>I am wondering if anyone can offer tried-and-true tips for cleaning modules: tools, materials, methods? I am particularly interested in cleaning solutions for large commercial flat-roof installations.</div>
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<div>I have always had success using a mild soap solution to help loosen dirt/pollen, but I recently read an article specifically advising against this: <a href="https://www.solarpowerworldonline.com/2020/05/pro-tip-never-use-soap-to-clean-dirty-solar-panels/">https://www.solarpowerworldonline.com/2020/05/pro-tip-never-use-soap-to-clean-dirty-solar-panels/</a></div>
<div>Any reactions?</div>
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<div>--</div>
<div>Corey Shalanski</div>
<div>Jah Light Solar</div>
<div>Portland, Jamaica</div>
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