[RE-wrenches] Real world production data for bifacials?

[Ryan Harkins]

Hey Greg,

We have a local distributor in Wisconsin that offers primarily bifacial modules now.  They have a few case studies underway now, with a couple months of data showing perhaps 18% or so increased production compared to the same nameplate wattage modules.  The sample size is short at this point, but the gains are encouraging especially considering they used standard 2 rail racking.  I think going with standard racking, or perhaps a shared rail, is good enough to get some added output from the backside.  They are somewhere in the $0.45-0.50/watt range.

See attached case study, data, and spec sheet.  


Best,

Ryan Harkins
NABCEP Certified PV Installation Professional™ /
Project Manager







Synergy Renewable Systems, LLC
PO Box 58
Stoughton, WI 53589
PH: (608) 712-7862
ryan.harkins at energycraft.com <mailto:ryan.harkins at energycraft.com>
www.energycraft.com <http://www.energycraft.com/>





> On Mar 22, 2020, at 9:45 PM, greg egan <greg at remotepowerinc.com> wrote:
> 
> Wrenches, good health to you and your loved ones.  I have a client that thinks he wants bifacial modules since his site is in the Alaskan arctic and they have snow a significant amount of the year.  I've been installing standard modules on racks that can be set at 90 deg in the fall and set back to ~lat -15deg in the spring.  They are snow free in the spring when it's clear and cold and they definitely make more power than the ones I see siting with snow on them all year.  A 6.2 kW array will put out 5.8kW AC under perfect conditions (90 deg tilt, solar noon, clear sky, cold etc.)
> 
> Anyway, I browsed the archives and in general looks like they require special racking , clamps and raise the price significantly.  Have any of you installed some and seen increased power production in snow country and if so has it made up for the extra cost, extra labor etc.?  Have the modules been reliable? I'm looking for data on installed systems and maybe recommendations on where I can get price and availability on some so I can help my customer make an informed decision.
> 
> All the best,
> 
> Greg Egan
> 
> Remote Power Inc.
> 
> 
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