Have you looked into SonnenBatterie? To which a number of Tesla execs have recently bailed out to work for? As always with all these new hypey Lithium storage systems, their presentations had everything except the information that real Wrenches actually need. But I was able to glean the info that Sonnenbatterie works with existing 48VDC nominal equipment and input, and 120/240VAC inputs also. Following all the info coming out, but i'd rather let someone else be the guinea pig. And, of course, big $$$$ per kWh of storage.
Dan Fink Adjunct Professor, Ecotech Institute IREC Certified Instructor™ for: ~ PV Installation Professional ~ Small Wind Installer Executive Director, Buckville Energy NABCEP Accredited Continuing Education Providers™ 970.672.4342 On Sun, Jan 17, 2016 at 12:06 PM, Peter Parrish < peter.parr...@calsolareng.com> wrote: > I have a residential client who wants a grid tied PV system with battery > backup. The client wants everything to be top of the line: Sunpower > modules. Tesla Powerwall batteries. > > > > Unfortunately, I have been spending time recently researching "smart > energy storage" for commercial applications focusing on peak demand > shaving. These are 480 V 3-phase systems with 30 kW inverters and 48+ kWh > Lithium technology batteries. I think I am beginning to understand the > performance trade-offs and how these systems can complement PV to reduce > demand charges as well as usage charges. > > > > My problem, is that I have not spent as much time researching the newer > residential GTBB offerings. I have studied the Juicebox offering – > Schneider XW5548 plus NMC Lithium batteries -- but that’s about it. I don’t > know the default vendor for the NMC batteries and if not Powerwall, could > Powerwall be a replacement? > > > > Otherwise, does anyone know how to access the Powerwall offerings? Also > has anyone had success getting a rebate in CA through the SGIP/AES program? > I know to qualify for SGIP one needs to demonstrate load shifting as > opposed to (or in addition to BB). > > > > There seems to be an offering from Solaredge (Storedge), but it is not > clear their optimizers work with the 96 cell Sunpower X21-345, for example. > > > > I am convinced that smart storage will become more important over time, > and I would like to use this customer to “get smart”, and prepare for > future business of this sort. > > > > Any practical knowledge would be greatly appreciated. I am happy to > exchange information on commercial demand management offerings. > > > > - Peter > > > > Peter T. Parrish, Ph.D. > > President, SolarGnosis > > 1107 Fair Oaks Ave., Ste. 351 > > South Pasadena, CA 91030 > > (323) 839-6108 > > NABCEP Certified PV Installation Professional #031806-26 > > peter.parr...@solargnosis.com > > > > _______________________________________________ > 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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