[RE-wrenches] Trina Module Annual Degradation

[solar1online at charter.net]

boB,
Can you expand on the warranty coverage in this situation?
TIA,
Bill

	-----------------------------------------From: "boB at midnitesolar.com"

To: "RE-wrenches"
Cc: 
Sent: Thu, 16 Jul 2015 19:01:32 -0700
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  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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