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Darn ! I must have been talking about myself !!!<br>
<br>
I said "short term memory" when I mean "short term warranty"<br>
<br>
boB<br>
<br>
<br>
On 7/18/2015 11:09 AM, <a class="moz-txt-link-abbreviated" href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</a> wrote:<br>
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<blockquote cite="mid:55AA9670.9000002@midnitesolar.com" type="cite">
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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 moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:solar1online@charter.net">solar1online@charter.net</a>
wrote:<br>
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<blockquote cite="mid:tmVH1q00E1LrRg601mVHte@charter.net"
type="cite">boB,<br>
Can you expand on the warranty coverage in this situation?<br>
TIA,<br>
Bill<br>
<br>
<p>-----------------------------------------</p>
From: <a moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:boB@midnitesolar.com">"boB@midnitesolar.com"</a>
<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’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
moz-do-not-send="true" class="moz-txt-link-rfc2396E"
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 moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:petertor@pobox.com">petertor@pobox.com</a><br>
>><br>
>><br>
<br>
____________</bob@midnitesolar.com><br>
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