Anyone using the new Renogy Shadow flux panel?

[grizzzman]

 

[sunshine_eggo]

"debris" = pigeons.

Agree.

7% "more compact" - not sure what they mean by that.
25% efficient? Hmmm.
16 bus bars.
"advanced cell level shading technology"

Bypass diode at each cell?

Shading tests at time stamp:

Shading is proportional to the cell count shaded vs. total cell count. Looks impressive if it's not BS.

 

[underdog5004]

Throw some d(iode)s on that bih

 

[grizzzman]

"debris" = pigeons.

Agree.

7% "more compact" - not sure what they mean by that.
25% efficient? Hmmm.
16 bus bars.
"advanced cell level shading technology"

Bypass diode at each cell?

Shading tests at time stamp:

Shading is proportional to the cell count shaded vs. total cell count. Looks impressive if it's not BS.

This summer I purchased a Shade Stopper that uses bypass diodes that you can clearly see. And it works as advertised. However there panels are of the flexible type and tend to in my opinion do not last long term.
I do not see any diodes on the Renogy. Panel ( but that doesn't mean that they are not there ).
Due to shading concerns my RV is set up with parallel strings, but I think running series with shade tolerant/bypass panels would be a meaningful upgrade.

 

[grizzzman]

Here appears to be a relevant review of this panel. One point is a higher open circuit voltage.

 

[sunshine_eggo]

Here appears to be a relevant review of this panel. One point is a higher open circuit voltage.

Makes sense. I'm counting 52 cells, so it's something of an oddity.

 

[SoggyShoes]

So @sunshine_eggo is that higher voltage a problem with a Victron 24V system?

 

[seneysolar]

25% efficient? Hmmm.

I call bs on the efficiency, i wouldn't trust Renogy with my 4th grade math homework....

That means within 2 months of setting the record for efficiency, Renogy caught up??? And has it in mass production for market??? I dont believe it.

 

[sunshine_eggo]

So @sunshine_eggo is that higher voltage a problem with a Victron 24V system?

Those panels MUST be 2S on a MPPT to be used reliably on a 24V system ~30Vmp is going to struggle to yield 28V in NOCT/NMOT or more intense conditions.

 

[vvgogh]

I call bs on the efficiency

The area of a module is 0.964 m2. At 1,000W/m2 solar irradiance, 25% conversion efficiency of this area would yield 241W with no packaging inefficiency. 200W/241W is the packaging efficiency, 83%. So, the module-level efficiency is 20.7% (=25%*83%).

They specify a module efficiency of 20.7% on their website...

 

[felneymike]

I swear by BougeRV CIGS panels, when those are shaded (or shot at) you only use the equivalent power of the shaded area, and not half / all the panel.
Apparently this is not due to them being CIGS, but due to them having zillions of bypass diodes, so I suppose it's not impossible for the same to also be done on a silicon-and-glass panel. My panels also have a higher VOC of 30v.
As for the claims of 25% efficiency, they wouldn't be the first. Half the panels on Amazon say they have that, even before anybody had actually acheived it in a lab. Honestly I just ignore efficiency claims, I want to know if 200w panels make 200w.