[RE-wrenches] PV watts question
August Goers
august at luminalt.com
Mon Jan 27 12:28:47 PST 2025
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 at 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 at 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
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20250127/82ed760c/attachment.htm>
More information about the RE-wrenches
mailing list