I think the limit is now stated as 7.6kw if memory serves me right. Jason
On Fri, Apr 16, 2021, 12:11 PM Matt Partymiller <m...@sesre.com> wrote: > They used to advocate 7.9kW AC/DC per Powerwall. That number may have > gone down recently. Coupling an inverter on the line side of the backup > gateway will resolve your issue of meeting homeowner demand. Tesla will > want you to add a CT to that inverter to ensure it does not mess up their > monitoring system, though that may already be incorrectly configured and > not monitoring the whole home if the system is backup only. > > > > Matt > > > > > > > > Matt Partymiller > > General Manager > > Solar Energy Solutions, LLC > > Lexington | Louisville | Bloomington | Cincinnati | Evansville | > Indianapolis > > 859-312-7456 (Office) > > 877-312-7456 (General) > m...@sesre.com > > > > Check out our amazing new website and social media updates: www.sesre.com > > <http://www.sesre.com/> <https://www.facebook.com/SolarEnergySolutionsLLC> > <https://www.instagram.com/solarenergysols> > <https://twitter.com/SolarEnergySols> > <https://www.linkedin.com/company/sesre> > > > > *From:* RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> *On > Behalf Of *Kirk Herander, VSE > *Sent:* Friday, April 16, 2021 11:13 AM > *To:* re-wrenches@lists.re-wrenches.org > *Subject:* [RE-wrenches] Powerwall 2 AC PV regulation > > > > Hello all, > > I am adding more PV to an orphaned Powerwall 2 AC system (which is all new > to me), -3- PW's stacked to total about 40kwh of usable storage. it > presently has about 13kw of PV, though -2- SMA inverters, feeding into it > through a common subpanel between the PW gateway and the main panel. I'm > wondering if there is a limit to the amount of PV the powerwall can > regulate/backoff (or use for battery charging) during a utility outage. > What is the max PW charge rate? I need to add about 10 kw of PV to produce > the owners goal of 100% coverage of electrical demand. > > If necessary for safety, i assume the extra pv inverter can be routed to > the main panel, and then won't participate in battery charging if the grid > goes down. Am I correct? Thanks. The PW manuals are of little use here. > > > > *Kirk Herander / kirkh@vermont.solar <kirkh@vermont.solar>* > > *Owner|Principal, VT Solar, LLC* > > *Celebrating our 30th Anniversary 1991-2021!!* > > *www.vermont.solar* > <https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842843233477645&sdata=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D&reserved=0> > > dba Vermont Solar Engineering > > 802.863.1202 > _______________________________________________ > 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 > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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