[RE-wrenches] Trina Module Annual Degradation

[jay]

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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