triple junction vs single crystalline [RE-wrenches]

[Joe Felker]

Keith,
UniSOlar has a white paper that states that in areas with lots of 
diffuse light like Western Europe, their product has a higher "energy 
yield".  See their white paper at: 

http://www.uni-solar.com/uploadedFiles/0.4.2_white_paper_3.pdf

They argue that the triple junction covers a wider light spectrum and i 
sless temperaure dependent.  Also, with a diode on each cell the product 
is more shade tolerant.
I have no personal experience with the Uni-Solar product.
Joe

Keith Cronin wrote:
> 
> 
> Ok
> 
>  
> 
> I got the call from a client that wanted to utilize a roofing solar
> integrated material and that they were told it is by far better than 
> single
> crystalline.
> 
>  
> 
> They stated it is 4 watts per sq ft vs 10 watts for single, but that
> overall, in intermittent weather, and average over the coarse of the 
> day,
> triple makes more kW.
> 
>  
> 
> They also stated due to tax credits, that they can consider the roof
> membrane as the "structure" aka racking, and take the tax credits on the
> whole roof.
> 
>  
> 
> Any takers on this debate?
> 
>  
> 
> Thanks
> 
>  
> 
>  
> 
> Keith Cronin
> 
> President
> 
> Island Energy Solutions Inc.
> 
> 270 Kuulei Rd. Suite 106
> 
> Electrical Lic C-25221
> 
> Kailua, HI 96734
> 
> 808-262-3268 Tel
> 
> 808-263-0338 Fax
> 
> www.islandenergy.net 
> 
>  <mailto:kcronin at islandenergy.net> kcronin at islandenergy.net
> 
>  
> 
> 
> [Non-text portions of this message have been removed]
> 



Joe Felker

Engineering Manager
NABCEP Certified Solar PV Installer
The Solar Center


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