Tesla just finished installing a single Powerwall at my house which has an existing 4.3 kW solar system. I intended to be able to backup all loads, but Tesla managed to screw up my SGIP application and overall order and I ended up with only one Powerwall and two load centers and a split system (only the <30 A circuits are backed up on a different load center). A new main panel was installed where the meter and all of the > 30A circuits live, which feeds to a sub-panel with all of my backed-up loads, the powerwall, gateway, relays, etc. (Partial home backup).
My questions revolve around a desire to increase my solar production in the hopes of further decreasing my usage from PG&E. I also plan to get 1 or more EVs in the near future which would increase my consumption even further and give me more reason to upgrade the solar.
Questions:
How do I add solar capability to this system? Where does it feed? I understand there is some limit to the size of the solar system feeding the powerwall? I plan to install another 7 kW of panels or so.
What visibility does the powerwall/gateway have to loads on the main panel? Is the app showing me power consumption of the whole house? How does it know what is being consumed outside of its isolated sub-panel, etc?
I know a bit about this install, but some of it is still a black box to me. Anything to help me better understand what I am working with would help my sanity and education, but also help me when working with the new solar installer (who is not Tesla/Solar city due to fast quoting, pricing, etc).
Install photos are below.
Main Meter Panel
https://www.dropbox.com/s/7du0xajr56u0e1c/Powerwall Install 1.jpg?raw=1
Backup Load Center, Gateway, Relay, etc.
https://www.dropbox.com/s/f2nd4v3pbv7v2tm/Powerwall Install 2.jpg?raw=1
My questions revolve around a desire to increase my solar production in the hopes of further decreasing my usage from PG&E. I also plan to get 1 or more EVs in the near future which would increase my consumption even further and give me more reason to upgrade the solar.
Questions:
How do I add solar capability to this system? Where does it feed? I understand there is some limit to the size of the solar system feeding the powerwall? I plan to install another 7 kW of panels or so.
What visibility does the powerwall/gateway have to loads on the main panel? Is the app showing me power consumption of the whole house? How does it know what is being consumed outside of its isolated sub-panel, etc?
I know a bit about this install, but some of it is still a black box to me. Anything to help me better understand what I am working with would help my sanity and education, but also help me when working with the new solar installer (who is not Tesla/Solar city due to fast quoting, pricing, etc).
Install photos are below.
Main Meter Panel
https://www.dropbox.com/s/7du0xajr56u0e1c/Powerwall Install 1.jpg?raw=1
Backup Load Center, Gateway, Relay, etc.
https://www.dropbox.com/s/f2nd4v3pbv7v2tm/Powerwall Install 2.jpg?raw=1