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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>boB, this is the reason that we’ve gone with Canadian Solar. Their warranty is backed up by the Chub Insurance Group so if CS goes belly up, Chub will honor that. I don’t know of another company which does that. Having said that, what constitutes a module defect ????<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Bill Dorsett<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Manhattan, KS<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> RE-wrenches [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>boB@midnitesolar.com<br><b>Sent:</b> Saturday, July 18, 2015 1:10 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Trina Module Annual Degradation<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><br>Hi Bill<br><br>From what I understand, and I have asked this question to different<br>people at different companies, the 25 year warranty people hear about<br>concerning PV is not for a broken panel within 25 years but the<br>degradation in performance over the years.<br><br>If a PV module just plain old "breaks" (goes to zero output) in, say<br>20 years and it has a 25 year degradation warranty, the PV manufacturer,<br>(if still in business), is not obligated to replace the defective module....<br>...Even if it resulted from a factory defect.<br><br>I do not know what the warranty period is for manufacturing defects.<br>I hear warranty times of around 10 years. I am not exactly sure on that<br>though.<br><br>Having said all this, there are companies that do replace modules after<br>their short term memory is up due to manufacturing defects. <br>Kyocera comes to mind immediately. These are typically larger<br>companies from what I see.<br><br>I'm just repeating what I have heard over the years regarding PV.<br><br>It just seems to me somewhat misleading the words "25 year warranty".<br>There may be some companies that actually DO offer a full 25 yr. warranty<br>these days but what if they aren't around before then ?<br><br>I bet that Bill Hoffer could offer way better information than I can<br>about this.<br><br>boB<br><br><br>On 7/18/2015 3:29 AM, <a href="mailto:solar1online@charter.net">solar1online@charter.net</a> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'>boB,<br>Can you expand on the warranty coverage in this situation?<br>TIA,<br>Bill<o:p></o:p></p><p>-----------------------------------------<o:p></o:p></p><p class=MsoNormal>From: <a href="mailto:boB@midnitesolar.com">"boB@midnitesolar.com"</a> <br>To: "RE-wrenches"<br>Cc: <br>Sent: Thu, 16 Jul 2015 19:01:32 -0700<br>Subject: Re: [RE-wrenches] Trina Module Annual Degradation<br><br><br><br>It's too bad that when a module goes to a REAL high degradation, like, <br>100% down to nothing<br>before that 25 year "warranty" is up, that it is NOT considered <br>degradation and is not covered<br>under "warranty".<br><br>P.S. This has nothing to do with Trina or any PV company in particular.<br><br>boB<br><br>On 7/16/2015 6:24 PM, jay wrote:<br>> HI Peter,<br>><br>> I’ll bite.<br>><br>> From the folks I know who deal with multi mega watt systems, are seeing less than that level of degradation.<br>><br>> That said, the standard module 25 yr warranty to 80% is just on .7% year if I have my math correct.<br>><br>> jay<br>><br>> peltz power<br>><br>><br>><br>><br>>> On Jul 16, 2015, at 9:08 AM, Peter Parrish <a href="mailto:peter.parrish@calsolareng.com"><peter.parrish@calsolareng.com></a> wrote:<br>>><br>>> I have recently been in discussion with a company that builds a large number<br>>> of medium-sized PV ground mount system (30 kW to over 100 kW). They claim<br>>> that they have been seeing something on the order of 0.7% annual degradation<br>>> in the output of their systems due to intrinsic degradation in the PV<br>>> modules. They also claim that this number is supported by the PV module<br>>> manufacturer. Many years ago (2007?) I remember reading a report containing<br>>> data gathered by NREL that showed the number was about 0.4%, and I thought<br>>> the number was actually decreasing over time.<br>>><br>>> The module in question is the Trina TSM-310 (PA14.8, I believe, if it makes<br>>> any difference).<br>>><br>>> Has anyone read anything recent about annual degradation in general or Trina<br>>> modules in particular?<br>>><br>>> - Peter<br>>><br>>> Peter T. Parrish, Ph.D.<br>>> President, SolarGnosis<br>>> 1107 Fair Oaks Ave. Suite 351<br>>> South Pasadena, CA 91030<br>>> NABCEP Certified PV Installer #031806-26<br>>> (323) 839-6108<br>>> <a href="mailto:petertor@pobox.com">petertor@pobox.com</a><br>>><br>>><br><br>____________<o:p></o:p></p></blockquote><p class=MsoNormal><o:p> </o:p></p></div></body></html>