It is confusing that they refer to this as a "light soaking" effect. When we worked on this thin film article in SolarPro magazine a couple years ago, a researcher at NREL referred to this specific phenomenon as a "dark soaking" effect (see discussion under "Performance Transients"):
http://solarprofessional.com/article/?file=SP4_1_pg34_Holz It is certainly possible for the Solar Frontier modules to have a better specific yield as compared to c-Si PV under certain environmental regimes. However, to suggest that this is always the case seems like overzealous marketing spin, which shouldn't really surprise anyone. There is a kernel of truth, but it is extrapolated ad absurdum. Bill Brooks likes to tell this joke/cautionary tale: "You know how to tell when someone in marketing is lying? Their lips are moving." On Feb 18, 2013, at 6:25 PM, Kirpal Khalsa wrote: > I don't understand the text as stated.....I am not sure if they are simply > referring to a common effect in most thin film panels where for the first few > months they can output more than ratings, and then they settle down to what > they are rated for, or if they are saying that after a few months the output > will increase, once they are "light soaked"? > -- > Sunny Regards, > Kirpal Khalsa > NABCEP Certified Solar PV Installer > Renewable Energy Systems > www.oregonsolarworks.com > > On Mon, Feb 18, 2013 at 4:13 PM, Marco Mangelsdorf <[email protected]> > wrote: > Yes, I saw that. Sounds like smoke and mirrors to me. > > marco > > On Mon, Feb 18, 2013 at 1:38 PM, Carl Emerson <[email protected]> wrote: > Marco. > > > > Did you notice the claim in the text as follows… > > > > The "Light Soaking" Effect > Following an initial period of exposure to sunlight, the CIS light soaking > effect will result in higher output than factory spec. This has been proven > by field data from around the world > > > > If correct this answers your question… > > > > Time will tell I guess. > > > > Regards > Carl Emerson > > > > > > > > > > Aloha, > > > > Solar Frontier in Japan, the maker of copper-indium-selenium (CIS) mods, > claims that their product produces more kWhs per kW installed than > crystalline silicon. > > > > http://www.solar-frontier.com/eng/cis/index.html If you go to the Softbank > Field Results on the right tabs area you can download a 4-page PDF report. > > > > I’m wondering if this is a hot-out-of-the-box phenomenon similar to some > other non-cSi products and that after X months in the field the output > stabilizes at a lower level. > > > > Anyone have any idea or experience with this? > > > > Thanks, > > marco > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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