The Tesla media kit describes 2 models, a 7kwh and a 10kwh: Tesla’s selling price to installers is $3500 for 10kWh and $3000 for 7kWh. (Price excludes inverter and installation.) Deliveries begin in late Summer.
Powerwall specs: - Mounting: Wall Mounted Indoor/Outdoor - Inverter: Pairs with growing list of inverters - Energy: 7 kWh or 10 kWh - Continuous Power: 2 kW - Peak Power: 3.3 kW - Round Trip Efficiency: >92% - Operating Temperature Range: -20C (-4F) to 43C (110F) - Warranty: 10 years - Dimensions: H: 1300mm W: 860mm D:180mm Nice price point, no info on the BMS or usable DOD. Power only 2kW with peak of 3.3kW? Ouch, most off grid homes do better than that. Also 7-10 kWh of energy storage would be fine for an small, efficient off-grid home and conservative user, but my math shows only a few hours of autonomy time for the typical American homeowner. Dan Fink Buckville Energy IREC Certified Instructor™ for: ~ PV Installation Professional ~ Small Wind Installer NABCEP / IREC / ISPQ Accredited Continuing Education Providers™ 970.672.4342 On Sat, May 2, 2015 at 6:45 AM, Chris Schaefer <ch...@solarandwindfx.com> wrote: > Kurt, since you’re a vermonter perhaps you’ve got an inside contact with > Green Mountain Power that can shed some light? Same issue here in NY, I’ve > got phone messages and emails asking about it. So we kinda need to know > what the battery voltage is in order to figure out how many amp hours the > bank is. Wonder how many life cycles, suggested DOD? > > > > Christopher > > Chris Schaefer’s > > [image: SolarWindFX] > > * Tel/Fax 585-229-2083 <585-229-2083> or Cell > 585-748-1870 <585-748-1870> * > > * 5115 South Hill Road ~ Canandaigua New York 14424* > > *www.solarandwindfx.com <http://www.solarandwindfx.com> ~ E-mail: > ch...@solarandwindfx.com <ch...@solarandwindfx.com>* > > > > > > > > > > > > > > Thomas Jefferson, the author of our great Constitution, once said, > "democracy" will cease to exist when you take away from those who are > willing to work and give to those who would not." > > > > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On > Behalf Of *Kirk Herander > *Sent:* Saturday, 02 May, 2015 07:22 > *To:* glenn.b...@glbcc.com; 'RE-wrenches' > > *Subject:* Re: [RE-wrenches] Tesla Powerwall battery paired with solar > > > > John Berdner of Solaredge (still with them??) in a previous discussion on > this forum has stated that Solaredge can be AC-coupled, with a firmware > tweak I believe he said. > > > > *Kirk Herander* > > *VT Solar, LLC * > > *Proven PV provider since 1991* > > *www.vermontsolarnow.com <http://www.vermontsolarnow.com>* > > dba Vermont Solar Engineering > > NABCEPTM Inaugural Certificant > > VT RE Incentive Program Partner > > 802.863.1202 > > > > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org > <re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of *Glenn Burt > *Sent:* Friday, May 01, 2015 7:47 PM > *To:* 'RE-wrenches' > *Subject:* Re: [RE-wrenches] Tesla Powerwall battery paired with solar > > > > I can tell you that the Solar Edge inverters do not support AC coupling, > as their reps told me at the NABCEP CE conference… > > I have seen pictures of some Solar City battery systems that use an XW as > the inverter. > > > > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On > Behalf Of *August Goers > *Sent:* Friday, May 01, 2015 6:50 PM > *To:* RE-wrenches > *Subject:* [RE-wrenches] Tesla Powerwall battery paired with solar > > > > Hi Wrenches, > > > > I’m sure you’ve seen the Tesla Powerwall press releases by now: > > > > http://www.teslamotors.com/presskit/teslaenergy > > > > We are already getting calls from interested homeowners. The product > mostly seems like a toy for wealthy people but nonetheless I would like to > be educated in how it works. > > > > There is mention that the battery pairs with Solar Edge inverters which > makes sense because both the Powerwall and Solar Edge work off of ~350 > VDC. But, I can’t figure out how off grid operation would work during > power outages. Maybe another battery inverter like a Schneider Conext is > required? > > > > Any thoughts on this product for better or worse? > > > > Best, > > > > August > > > > _______________________________________________ > 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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