> a $250 generator won’t power your house. Maybe a few appliances. >
Can do mine. I need about 100W to power all the lights in the house that I need (20 or so LED's) I need about 250W to power the refrigerator (50% duty cycle) A small generator can do that nicely! I do not need anything else during grid down. But then I have not used a generator in years. I just plug the house into the 2 kW available from My Chevy Volt. Or the 1 kW from the Prius. Dont need no stinkin generator. Oh, and while the sun is up, I have 16 kW of solar power...(DC, but the Sunny Boy inverters now include 1.5kW of grid-down AC as well per inverter)... Bob, Wb4APR > > > On Jul 13, 2019, at 6:15 PM, Robert Bruninga via EV <ev@lists.evdl.org> > wrote: > > > > WHen you go grid-tie solar, nothing changes. you do the same thing you > did > > before. A $250 generator and a $15 can of gas is far more cost > effective > > to produce a few dollars worth of power outage comapred to a $13,000 > > battery to produce $2 worth of power (a 14 hour outage)... Bob > > > >> On Sun, Jul 14, 2019 at 7:05 PM paul dove <dov...@bellsouth.net> wrote: > >> > >> One thing I haven’t seen mentioned is power outage. If the grid goes > down > >> with net metering so does you solar. > >> > >> You have to be off-grid to stay powered when the grid fails. > >> > >> Sent from my iPhone > >> > >>> On Jul 14, 2019, at 11:16 AM, Robert Bruninga via EV < > ev@lists.evdl.org> > >> wrote: > >>> > >>> But why are you so determined to use batteies when the cost of grid > power > >>> is ditrt cheap. > >>> > >>> a 1kwh deep cycle lead acid battery might cost $100. It will store 10 > >>> cents of electricity per day. > >>> After one year it is SHOT. that is $100/365 days or about 27 cents per > >>> kWh. So you are paying TRIPLE the cost of electricity just for a > battery > >>> compared to just getting it from the grid? And this does not even > >> mention > >>> the cost of solar panels. This is purely battery storage costs. > >>> > >>> Even if you find magic battteries that can do 1000 discharges before > >>> replacement, that still is 10 cents per kWh storage cost and still does > >> not > >>> even count the cost of solar to get the energy inthe first place. > >>> > >>> AND, unless you do a full cycle of thebattery everyday, to use y our > >>> incoming solar, then you are not fully using your array.investment. > Sure > >>> you can throw away all kinds of money at this problem, but nothing > >> canbeat > >>> being grid-tied and a net meter. Just do it. Do a small system at > >>> contractor prices... then add panels at your leisure and at 20% of the > >> cost. > >>> > >>> bob > >>> On Sun, Jul 14, 2019 at 10:50 AM Peri Hartman via EV < > ev@lists.evdl.org> > >>> wrote: > >>> > >>>> Actually, I am proposing something simpler than a power wall - that > does > >>>> not feed back to the grid. Maybe that simplification doesn't reduce > the > >>>> cost of the battery system much, but it would reduce the legal paper > >>>> work down to a normal electrical permit. > >>>> > >>>> Peri > >>>> > >>>> ------ Original Message ------ > >>>> From: "Willie via EV" <ev@lists.evdl.org> > >>>> To: ev@lists.evdl.org > >>>> Cc: "Willie" <wmckem...@gmail.com> > >>>> Sent: 14-Jul-19 7:30:58 AM > >>>> Subject: Re: [EVDL] Solar off grid with an EV? (transformers) > >>>> > >>>>> > >>>>> > >>>>>> On 7/14/19 9:06 AM, Peri Hartman via EV 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. > >>>>> > >>>>> You have described a PowerWall. The battery is one or more units > that > >>>> will supply or charge 5kw and holds 13-14kwh. If about 11kwh will > carry > >>>> you over night and if you don't use more than 5kw over night, a single > >>>> battery unit will serve you. With good sun, day time self power use > >> can be > >>>> around 20kw, including car charging. > >>>>> > >>>>> In 5 or so months, I have bought less than 10kwh from my utility and > >> sold > >>>> them something like 10,000 kwh. That is with one battery unit. > >>>>> > >>>>> Cost installed was about $13k. For smooth operation, I am highly > >>>> dependent on the utility to accept my excess power. > >>>>> > >>>>> _______________________________________________ > >>>>> 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/20190714/9cbd7158/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/20190713/f4fdb073/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/20190714/1405062d/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)
