[Greenbuilding] Efficient Solar Panels

[RT]

On Thu, 12 Jun 2014 16:37:44 -0400, Carmine Vasile <gfx-ch at msn.com> wrote:

> system for our all-electric house that can produce only 72%

> to attain 99% we need panels capable of delivering at least

Don't know nuttin' about nuttin' about PV gizmology and can't help you on  
the leasing companies ... but I do remember my neighbour, a theoretical  
physicist at the (Canadian) NRC,  telling me about the Fresnel  
lenses-based concentrated PV systems that he had been playing with where  
PV cells the size of one's fingernail could replace the much larger PV  
arrays one typically sees around the neighbourhood.

If available roof-top mounting area is a limiting factor (as seems to be  
CV's case) then it would seem that the Fresnel lenses concentrators might  
be useful .

Also, I do know that tracking systems seem to increase a system's  
performance by about 30-40% (or more) in my neighbourhood (when comparing  
the production of two identical sized 52 panel arrays within a few  
concession roads of each other).

But as to which approach would provide the biggest bang for the buck, I  
haven't a clue but my my wild-@$$ guess would be the Fresnel lens  
concentrators simply because fewer PV cells would be required and Fresnel  
lenses should be fairly cheap.
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