True, south always better. But the point is that then you need an inverter with twice the capacity.. The topic being discussed is being able to share an inverter with additional panels facing a different direction.
Key points: 1) when not facing due south, panels should be less tilted since the sun rises in the NE and sets in the NW, having flatter panels gets more sun time in the middle of the day. 2) Even if both panels are quite illuminated at the same time, the MPPT inverter will not be overloaded. It will always adjust to max power and no more. SO having some overlap is OK. 3) In my case, my SE panels begin to be shaded by 2 PM, so I installed another set of panels facing SW that begin to be unshaded about the same time, 4) You must parallel them with diode isolation. Back to #1, remember that even FLAT panels will produce 80% annual totals of the ideal south panels. They are terrible in the winter but make up for it with the double high-sun in the summer. Though do not do it, they will collect dust and cant wash off in the rain. Im just makiong the point that the only placew where you tilt to latitude is due south. Other directions, less tilt is better. Bob On Thu, Jul 30, 2020 at 10:00 AM Peter VanDerWal via EV <ev@lists.evdl.org> wrote: > FWIW I did some simulations using PVWatts 2 a while back to see if it made > sense to have a panel facing east and another facing west, like you > describe(tilted to match latitude). I was hoping this would result in a > flatter power output through the day. Turned out that in almost all cases > it was better off to have both panels facing south(tilted to match > latitude). > More power across the whole day and obviously more daily energy produced. > > July 29, 2020 6:55 PM, "Willie via EV" <ev@lists.evdl.org> wrote: > > Yes. With a vertical angle between of 30-40 deg; a pair of panels make a > near equilateral triangle > > with the ground. I'm wondering if I might see better results by reducing > that angle between panels. > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200730/26c6c56d/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
