Thank you Bob. That was very succinct. <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
On Sun, Jul 14, 2019 at 10:22 AM Robert Bruninga via EV <ev@lists.evdl.org> wrote: > That is why batteries TRIPLE the cost compared to a grid system and also > require summer/winter life style changes: > 1) As you say, when the batteries are full, all your solar investment is > doing *nothing* > 2) In order to have power on cloudy days, you have to oversize the > batteries 3 to 5 times a day's capacity > 3) Combine #1 and #2 and your solar is spending 1/3rd of most days doing > *nothing* > 4) You cannot store in batteries the 2X more energy you get in the summer > for use later in the winter > 5) So, you either throw away half of your solar production in the summer > and live a tolerable winter life style > 6) Or you invest for your summer lifestyle and then just survive the winter > with half power. > > Battery storage when you have the grid (net meter) is simply not > economically practical in any way whatsoever. > (Unless you get free batteries and are willling to maintain them for the > rest of your life)... > > Bob > Author http://aprs.org/Energy-Choices.html > > > > > On Sun, Jul 14, 2019 at 10:06 AM Peri Hartman via EV <ev@lists.evdl.org> > wrote: > > > How hard would it be to build a battery system that normally supplies > > 100% of the domestic power but, when depleted, switches over to supply > > domestic power from the grid ? Also, I think it would be safe > > assumption, or at least a reasonable simplification, to assume that the > > battery is always sufficient for the load, except when depleted. The > > battery would always be charging from a solar array, never from the > > grid. > > > > It seems to me, a system like this would completely circumvent any > > negative conditions imposed by power companies. Of course, once the > > solar panels fill the battery, excess production is lost. > > > > Peri > > > > ------ Original Message ------ > > From: "Robert Bruninga via EV" <ev@lists.evdl.org> > > To: "Electric Vehicle Discussion List" <ev@lists.evdl.org> > > Cc: "Robert Bruninga" <bruni...@usna.edu> > > Sent: 14-Jul-19 4:54:09 AM > > Subject: Re: [EVDL] Solar off grid with an EV? (transformers) > > > > >For what it is worth... For off grid or backup power,.I have some 500W > and > > >2500W 120 VAC to 240VAC transformers. Great for stepping up a single > > phase > > >120v generator to 240 VAC for a well pump or other emergency power > needs. > > > > > > > > > https://baltimore.craigslist.org/ele/d/glen-burnie-v-transformers/6928546512.html > > > > > >$30. Baltimore area. Will not ship. > > > > > >On Sun, Jul 14, 2019 at 12:40 AM Michael Ross via EV <ev@lists.evdl.org > > > > >wrote: > > > > > >> I get all that because I have panels and a net metering plan with > Duke > > >> Power. As I said it depends on whether your utility supports what you > > want > > >> to do. Clearly, YMMV. > > >> > > >> I personally could do exactly as I described. If I had an EV that > > needed > > >> charging regularly, I could put up a ground based array of > > microinverter > > >> 120VAC output arrays, and add to them pretty much at will. If I over > > >> produced then Duke would bank it. In the billing month that contains > > May 31 > > >> they would zero out any bank I had developed. I could live with that. > > >> > > >> < > > >> > > > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail > > >> > > > >> Virus-free. > > >> www.avg.com > > >> < > > >> > > > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail > > >> > > > >> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > >> > > >> On Sat, Jul 13, 2019 at 7:06 PM Mr. Sharkey via EV < > ev@lists.evdl.org> > > >> wrote: > > >> > > >> > >>We're going back to the way intertie started off decades ago. > The > > >> > utilities > > >> > imposed impossible technical and insurance requirements on net > > metering, > > >> > which led PV hobbyists to start the Guerrilla Solar movement -- > > >> essentially > > >> > doing grid intertie on the sly. > > >> > > > >> > This is veering around and nearly clipping the Off-Topic > guardrails, > > >> > but because you brought it up: > > >> > > > >> > At least one to-be-left-unnamed EV driver and solar enthusiast was > > >> > guilty of participating in that clandestine program: > > >> > > > >> > http://www.westlanetv.org/~sharkey/gsolar.pdf > > >> > > > >> > And here's what happens when the utility figures it out: > > >> > > > >> > > http://www.westlanetv.org/~sharkey/Amnesty_for_Solar_Guerrillas.pdf > > >> > > > >> > (see lower right of first page, and upper left of second) > > >> > > > >> > I, er this guy, got off easy, they could just as easily sic'ed the > > >> > County permit and inspection authority on me, uh, him, threatened > > >> > utility power disconnect, or applied other punitive sanctions such > as > > >> > a retroactive energy charge of their own estimation. In the end , > all > > >> > the utility wanted was to stop being annoyed by the alarms and > alerts > > >> > in the new software program that they were running to administer > the > > >> > smart meter program for 79,000 customers. > > >> > > > >> > Before I go, R.I.P. to friends Richard and Karen Perez, and goodbye > > >> > to Home Power Magazine, which ceased publication in October of > 2018. > > >> > > > >> > ____________________________________________________________ > > >> > Drink This Before Bed, Watch Your Body Fat Melt Like Crazy > > >> > Diet Insider > > >> > > http://thirdpartyoffers.juno.com/TGL3131/5d2a63e484ff63da646est01vuc > > >> > _______________________________________________ > > >> > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > >> > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > >> > Please discuss EV drag racing at NEDRA ( > > >> > http://groups.yahoo.com/group/NEDRA) > > >> > > > >> > > > >> > > >> -- > > >> Michael E. Ross > > >> (919) 585-6737 Land > > >> (919) 901-2805 Cell and Text > > >> (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> > Tablet, > > >> Google Phone and Text > > >> -------------- next part -------------- > > >> An HTML attachment was scrubbed... > > >> URL: < > > >> > > > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190714/c41c8d38/attachment.html > > >> > > > >> _______________________________________________ > > >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > >> 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/20190714/c8dcf508/attachment.html > > > > > >_______________________________________________ > > >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > >http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > >Please discuss EV drag racing at NEDRA ( > > http://groups.yahoo.com/group/NEDRA) > > > > > > > _______________________________________________ > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > 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/20190714/303d9e68/attachment.html > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- Michael E. Ross (919) 585-6737 Land (919) 901-2805 Cell and Text (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Tablet, Google Phone and Text <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190714/2a2a4463/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
