a $250 generator won’t power your house. Maybe a few appliances. Sent from my iPhone
> 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)
