I don't have public details to release regarding this, review the "Site and Conductor Limits" function in the new GW2 manual. Its not my place to say more right now.
Charge and discharge have a separate setting that the GW2 will enforce as much as it can by ramping PW discharge up or down. It will discharge Powerwall power if setup to do so and offset more than 200A of loads.
Vines, thanks for this info. Perhaps you could give me some insight in terms of whether or not the Gateway 2 could actually enables me to add some powerwalls?
My situation is that we have a large new house, accessory unit, and pool (with the usual equipment) and an EV. Everything is super efficient (all LED lighting, Mitsubishi VRF HVAC, gas hot water heater, excellent insulation, etc...). We have about 20KW of solar installed as well with a solaredge system.
Due to the way the NEC works, PGE and the electricians made us to go 400A service (we were close to needing 600A by their calcs!) yet the biggest load hour I can find in the billing is about 11 KWh. I am getting ready to install some power monitoring equipment that will give me 5 sec load numbers off the Main AC breakers so can verify typical and peak load.
My solar installer said Tesla would not work for whole home backup in this case, because 200A can't switch 400A. And to deal with an extended outage, I wanted a generator anyway, so we have a 30KW generator that backs everything up except the pool equipment. I would love to add some powerwalls to shift load so that my entire peak and partial peak times can be covered by solar, as my peak solar output is closer to noon and with EV-2A tarriff from PGE, the power is more than double the price in peak as compared with offpeak.
Does the new Gateway 2 handle this sort of configuration more flexibly that gateway 1?
I could run the just the main house and HVAC through the PW, which would be just fine with 200A (though again the way the NEC calculates load would be greater than 200A). The Mitsubishi HVAC units start up at 5A and spool up to a max of 35A each (there are 2), so there is no LRA issue with them. But I do;'t want to give up on the generator for whole home backup. It would be nice if the generator had an issue to have at least some backup from the powerwalls or have them act as a whole home UPS to handle the transition until the generator powers up and the 400A Kohler ATS switches over to emergency power.
I have the had installer propose using other systems that can lever a 3rd party transfer switch (so 400A is not a problem), but the cost of the battery units made it non cost effective. Tesla's system has great batteries, but because they only can use their own gateways, its more limiting for my type of setup.
Can Tesla handle my configuration now with the new gateway? Nothing in the specs seems to indicate it can according to my installer.
thx
mike