A legitamate solar PV installer will steer you to undersize your system so that you don't have much excess power generation. That one panel too many never pays for itself. When you size a standalone system you have build to some peak need rather than rely on the grid. You have to hypothesize about how much power you will need or want in reserve for long bouts of cloudy weather. Then when the sun is shining you get no payback from your investment.
At any rate you have to think this through for a boat, car or home or you may be disappointed. On Mon, Jan 18, 2016 at 6:26 PM, Robert Bruninga via EV <ev@lists.evdl.org> wrote: > Houseboat, perfect! > Yes, you need battery power overnight when UNDERWAY, but no more. Because > when the sun comes up, you have all the power you need. > > Now, what most "wanna-go-off-grid" people overlook is that when the sun is > shinning and you are not using the boat underway, then your batteries are > fully charged and from that point on, y our investment in solar is doing > you nothing. Every day, once your batteries are full, there is n o place > to put the excess power. > > That's where grid tie is a hands down winner. It lets you bank all your > excess power at full retail rates... and it helps your fellow man as well > as yourself by reducing your carbon footprint.... > > I'm putting a 3 kW array on a floating deck and two $100 deep cycle marine > batteries and 2 trolling motors.. The batteries will make it a boat so I > can register it and make it legal. The fact that the other 99.9% of the > time it is feeding my house is gravy. And because it is a boat, it does > not violate the rules for piers) and lets me DOUBLE the size of my array on > the water).. (the only place I have sun.).. See: > http://aprs.org/alternative-energy.html about 40% down the page... > > Same goes for RV's that just sit by the house 99% of the time. Cover them > with solar panels for when you are remote-wilderness camping, but all the > rest of the time, let them bacfeed your grid so that you are getting return > on their investment everyday, every photon,... > > But without grid tie, and net metering, you cannot do anything to your > advantage with all that solar power. except the 1% of the time you actually > use the RV or boat. A terrible return on investment. > > Bob, Wb4APR > > > On Mon, Jan 18, 2016 at 6:01 PM, Ty Delaney <stargaize...@yahoo.com> > wrote: > > > I really appreciate this information. As much as I would like to be free > > of the grid, I now see I must make a hard, educated decision. The > > difference for me is I live on a houseboat. I have decent reliability > grid > > shore power when docked. But when I leave the dock I must rely on dirty > ice > > genny. However, because it's a boat, I must carry enough deep cycles to > run > > everything anyway. So for me, it's a question of more batteries more > > weight, more maintenance or more panels, less weight, maintenance, and > more > > reliance on the sun. > > > > Sent from my iPhone > > > > > On Jan 18, 2016, at 10:28 AM, Robert Bruninga via EV < > ev@lists.evdl.org> > > wrote: > > > > > > to: > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160118/208b36fa/attachment.htm > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- To invent, you need a good imagination and a pile of junk. Thomas A. Edison <http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 585-6737 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 600-2892 Cell michael.e.r...@gmail.com <michael.e.r...@gmail.com> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160118/b0f9071c/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
