The SMA Sunny Storage looks promising. It will be able to work with the LGC RESU10 HV battery and, sooner rather than later I hope, BYD package as well.
And it will allow for a backup generator tie in. Ta-dah! marco On Thursday, September 13, 2018, Bruce Erickson <br...@mendocinosolar.com> wrote: > Hi Marco, > > I partially agree with you. I recently bid Outback, StorEdge, and Pika > options for a GTBB customer, partly to understand pricing for myself, and > found OB to be so much more expensive. The customer really wanted a system > that would be to be able to charge the batteries off a generator in an > outage, understandably. But the extra thousands in cost for OB ended up > being prohibitive. Add-on rapid shutdown is a killer. So he’s opting for a > nice modern high voltage DC system, with optimizers and built-in RSD, but > when there’s an extended outage, he’ll have to hope the sun comes out right > after the storm to recharge the batteries, or he’ll end up in the dark > again, until the grid comes back. Maybe there’s a high voltage inverter > that allows generator charging, or a third-party battery charger, that I’m > not aware of. Otherwise high voltage systems are very limited for backup, > at least in winter storm scenarios. > > *Bruce Erickson* > Mendocino Solar Service > PO Box 1252 > Mendocino, CA 95460 > 707-937-1701 > 707-937-1741 fax > br...@mendocinosolar.com > > *Connecting Mendocino County to Solar Since* *1994* > > > > > > > > On Sep 12, 2018, at 6:26 PM, Marco Mangelsdorf <ma...@pvthawaii.com> > wrote: > > Aloha all, > > At the risk of whacking at a hornet’s nest…lower voltage DC is soooo 80s > and 90s especially when it comes to grid-tie applications with battery > storage. > > The time of OutBack and Schneider and all the others doing 48VDC is > drawing to close. Enough already. Thank you for your service. > > The sooner the industry fully migrates to higher voltage DC (Tesla, LG > Chem, BYD and others), the better. > > marco > > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org > <re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of *Peter Giroux > *Sent:* Wednesday, September 12, 2018 3:03 PM > *To:* RE-wrenches > *Subject:* Re: [RE-wrenches] Any thoughts on this approach to adding > battery backup to an existing grid tie system will be appreciated. > > Ken > > We have had terrific success with AC Coupling. Yes there are some > differences from Dc Coupled systems but if built properly, customer is > willing to learn how to use it and maintain it and you put the correct > relays in to shut off the string inverters if battery voltage gets to high, > great. > > If you have a customer that refuses to exercise the system, not check > the batteries if they are fla's and overloads it when the power goes down > then not so cool. We have customers that power shave with it, have had > backup power for days until the power came back on as they monitored the > loads and were judicious about use. Ray is right in the sense the customer > needs to learn how to use the system or they can royally screw it up ( yes > we have had two do this, one learned the other not ). > > The Radians have been great work horses for this application, sadly as > Ray mentioned Outback has moved away from it as a primary solution. > > peter giroux > ASAE > Atlanta > > ----- Original Message ----- > *From:* Ken Schaal <k...@commonwealthsolar.com> > *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org> ; Ken Schaal > <cwsol...@gmail.com> > *Sent:* Wednesday, September 12, 2018 8:11 PM > *Subject:* [RE-wrenches] Any thoughts on this approach to adding battery > backup to an existing grid tie system will be appreciated. > > https://www.youtube.com/watch?v=eyhkIfS5Z-Q > ------------------------------ > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists. > re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists. > re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > >
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