Hi Jay, Per your note, annual kWh production should go up as you add more modules to a project, even if you are increasing the DC/AC ratio. I wonder if the metric you are reporting out is kWh per kWp per year, or specific yield?
https://www.solarpowerworldonline.com/2017/08/specific-yield-overview/ -August On Mon, Jan 27, 2025 at 11:56 AM jay via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > HI All > > I’m working with a customer who’s pretty savvy and is using PV watts for > his design. > > What I can’t figure out is the kwh/year goes down if he uses dc/ac ration > of 1.5 instead of 1.2 which is the default. > > Hes in Santa Fe NM. > > .8 ratio= 1663 kwh/yr > 1.0 ratio = 1668 kwh/yr > 1.2 ratio = 1671 kwh/yr > 1.5 ratio = 1623 kwh/yr > > I was expecting that more PV = more kWh/yr. > > What am i missing? > > > standard module > fixed roof mount > 14.08 loss’s > 10 degree tilt > 180 degrees > > > > jay > > > _______________________________________________ > 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 > >
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