[RE-wrenches] Bifacial modules on pole mounts

[Andrew Truitt]

Mac - My understanding is modeling production from the back of bifacial
modules is pretty tough, but as you've probably seen data sheets often have
a few levels of back-side production boost factors.  I would consider
contacting manufacturer(s) to discuss modeling production for your
particular situation.

Re: mounting, I think each frameless bifacial manufacturer has their own
compression-based clamp system, but Silfab does make a framed bifacial
module.  Advantages of frameless are aesthetics and no need for module
grounding. A disadvantage is that you can't use traditional snow-retention
methods but that doesn't sound like an issue for your project.  Frameless
probably sheds show faster.

Here's some info I've been gathering for a carport project we're looking at:

[image: Inline image 1]


Lumos is another [expensive] option.  Concealed j-boxes make for a very
clean look but they're well over $1/W.




Regards,

*Andrew Truitt*
Director of Emerging Technologies | *DIVIDEND* *SOLAR*

mobile    202-486-7507 <(202)%20486-7507>
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NABCEP Certified PV Installation Professional ID: 032407-66
Colorado Journeyman Electrician License No.: 600132



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~William McDonough

On Thu, Jun 22, 2017 at 8:51 AM, Dave Angelini Offgrid Solar <
offgridsolar at sti.net> wrote:

> I have used the old Sanyo bifacials on a Pergola in snow country with very
> good results. They had frames though and have held up really well.  I have
> some single axis trackers at my place that I would really love to update
> the modules with the new Panasonic bi's.
> The frames have always been the thing that stopped me. I will follow your
> post here and appreciate any updates.
>
> --Dave
>
>
> > Hi Wrenches,
> >
> > We have started thinking about experimenting with bifacial modules on
> pole
> > mounts in remote locations where snow is a big issue; the idea being we
> > could still be collecting some energy when the front of the module is
> > covered in snow.  I don't have any experience with bifacial modules, I am
> > curious if anyone has tried this?  Also, since most bifacial modules are
> > frameless, how is the racking configured?
> >
> > Thanks in advance
> >
> >
> >
> > --
> >
> >
> >
> > Mac Lewis
> >
> > *"Yo solo sé que no sé nada." -Sócrates*
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> Dave Angelini Offgrid Solar
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