Many OEMS outsource cells, is it possible the cells came from different cell companies?
Jay Peltz power. > On Nov 5, 2021, at 7:27 PM, Bill Hoffer <suneng...@gmail.com> wrote: > > > Like any manufacturing process there are variations, especially solar cells, > regardless of type ( poly vs mono). It is getting harder to the difference > between poly and mono this days due to coating processes to improve > efficiency. > > Cells can be sorted by output (watts) and or. Color matching. Most module > manufacturers make sure the watts are matched otherwise a module will > underperform, so generally from an output point of view there are probably > little difference in wattage of each cell. Ie not measurable differences > noted for color variations. > > That being said this is all based on flashing at room temps with no heating > of the cell. The color variation and reflectivity of the cell surface will > impact the cell temperature in real life. Is it enough to make a real > performance issue, probably not. > > IMHO I have to wonder what other shortcuts a module manufacturer is taking if > their cells are not color matched. It is not hard to color match and power > match cells and it usually does not cost more to do so. The product looks > more professional and should operate in the field at peak efficiency. All > the module manufacturers I work with sort by color and power output. I am > guessing the lower quality guys are not holding their suppliers to the same > standard QC. However I have no data to verify that and like I said probably > not a serious hit in performance. > > Bill Hoffer > >> On Fri, Nov 5, 2021, 3:50 PM Jason Szumlanski >> <ja...@floridasolardesigngroup.com> wrote: >> I'm looking for a succinct way to explain why panels appear to be different >> colors even though they are the same orientation. See attached photo for an >> example. >> >> Jason Szumlanski >> Florida Solar Design Group >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
