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. .................................................................................................. Northern Arizona Wind & Sun - Electricity From The Sun Since 1979 Solar Discussion Forum: http://www.wind-sun.com/ForumVB/ .................................................................................................. ----- 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 [email protected] 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 _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org ------------------------------------------------------------------------------ _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
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