[RE-wrenches] Trina Module Annual Degradation

[August Goers]

boB -

I am under the impression that a manufacturer module power output warranty
is just that - a warranty to guarantee the power output at a certain minimum
level unless a warranty exclusion occurred such as physical damage,
incorrect installation, etc. So, if a module is producing zero power it
could very well be covered under warranty.

Best,

August
Luminalt

-----Original Message-----
From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of boB at midnitesolar.com
Sent: Thursday, July 16, 2015 7:02 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Trina Module Annual Degradation



It's too bad that when a module goes to a REAL high degradation, like, 100%
down to nothing before that 25 year "warranty" is up, that it is NOT
considered degradation and is not covered under "warranty".

P.S. This has nothing to do with Trina or any PV company in particular.

boB

On 7/16/2015 6:24 PM, jay wrote:
> HI Peter,
>
> I’ll bite.
>
>  From the folks I know who deal with multi mega watt systems, are seeing
> less than  that level of degradation.
>
> That said, the standard module  25 yr warranty to 80% is just on .7% year
> if I have my math correct.
>
> jay
>
> peltz power
>
>
>
>
>> On Jul 16, 2015, at 9:08 AM, Peter Parrish
>> <peter.parrish at calsolareng.com> wrote:
>>
>> I have recently been in discussion with a company that builds a large
>> number of medium-sized PV ground mount system (30 kW to over 100 kW).
>> They claim that they have been seeing something on the order of 0.7%
>> annual degradation in the output of their systems due to intrinsic
>> degradation in the PV modules. They also claim that this number is
>> supported by the PV module manufacturer. Many years ago (2007?) I
>> remember reading a report containing data gathered by NREL that
>> showed the number was about 0.4%, and I thought the number was actually
>> decreasing over time.
>>
>> The module in question is the Trina TSM-310 (PA14.8, I believe, if it
>> makes any difference).
>>
>> Has anyone read anything recent about annual degradation in general
>> or Trina modules in particular?
>>
>> - Peter
>>
>> Peter T. Parrish, Ph.D.
>> President, SolarGnosis
>> 1107 Fair Oaks Ave. Suite 351
>> South Pasadena, CA 91030
>> NABCEP Certified PV Installer #031806-26
>> (323) 839-6108
>> petertor at pobox.com
>>
>>

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