<html><body>boB,<br>Can you expand on the warranty coverage in this situation?<br>TIA,<br>Bill<br><br><div class="reply-new-signature" unselectable="on" contenteditable="false"></div><p>-----------------------------------------</p>From: "boB@midnitesolar.com" <bob@midnitesolar.com><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\u2019ll 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 <peter.parrish@calsolareng.com> 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>
>> petertor@pobox.com<br>
>><br>
>><br><br>
_______________________________________________<br>
List sponsored by Redwood Alliance<br><br>
List Address: RE-wrenches@lists.re-wrenches.org<br><br>
Change listserver email address & settings:<br>
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<br><br>
List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html<br><br>
List rules & etiquette:<br>
www.re-wrenches.org/etiquette.htm<br><br>
Check out or update participant bios:<br>
www.members.re-wrenches.org<br><br></bob@midnitesolar.com></body></html>