[RE-wrenches] insolation v. actual output

[Jamie Johnson]

Marco,

If you are looking for an equation for the measured ac output in watts to compare to STC, then solarpro mag had an article in OCT/NOV 2009 along with a temp and irradiance factor chart that may help.


Jamie Johnson
General Manager
SOLAR POWER ELECTRIC TM
NABCEP Certified Solar PV Installer #031310-118
(941) 380 - 0098
www.SPEFL.com
FL State Certified # EC13001765

Sent from my iPhone

On Oct 12, 2010, at 9:17 PM, "Marco Mangelsdorf" <marco at pvthawaii.com> wrote:

> Could someone please provide me with that generally accepted equation when it comes to estimating AC output from a PV array versus the STC rating?
> 
>  
> 
> That is, I’m looking for that equation which estimates the losses due to mod mismatch, soiling, wire losses, etc., etc.  I’ve got someone who mistakenly expects their PV array to put out 90 or more percent of the STC rating.
> 
>  
> 
> Thanks,
> 
> marco
> 
>  
> 
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