[RE-wrenches] REC modules

[Wind-sun.com]

Not sure how you came to that conclusion.

Comparing for example the Poly Kyocera and the single crystal Solarworld and Suntech, there is less than 1/2 of 1% difference in PTC derating. 

Sanyo comes out about 2% better, but costs 30-50% more per watt.

Single crystal is often touted as being better for low light conditions, and it is - but so what? On a heavy overcast day insolation on the panel might be be down 95%. Single crystal is typically about 3% better under low light, so instead of getting 5% of the nameplate rating of the poly panel, you are getting 5.03% - or about the same difference that a 1 degree panel temperature makes.

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Northern Arizona Wind & Sun - Electricity From The Sun Since 1979
Solar Discussion Forum: http://www.wind-sun.com/ForumVB/
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  ----- Original Message ----- 
  From: R Ray Walters 
  To: RE-wrenches 
  Sent: Monday, October 26, 2009 4:06 PM
  Subject: Re: [RE-wrenches] REC modules


  No, IMHO.
  A polycrystalline module is never going to be "top shelf".

  First Quality would be Sunpower, Solarworld, Sanyo, ????
  Check the new CEC module ratings. Apparently most modules were further derated. A few stayed the same or went up slightly. 


  R. Walters
  ray at solarray.com
  Solar Engineer






  On Oct 26, 2009, at 5:46 PM, Drake Chamberlin wrote:


    Hello Wrenches,

    I am considering using REC modules on a project, and have never used them.  Are these first quality modules? 

    Thank you,


    Drake Chamberlin
    Athens Electric
    OH License 44810
    CO License 3773
    NABCEP TM  Certified PV Installer 
    Office - 740-448-7328
    Mobile - 740-856-9648 

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