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Powerwall before PV?

YYZ QQ

Member
Oct 20, 2017
25
17
Canada
Now that Powerwall OS2 is almost here (yeah I know.... almost) how difficult would it be to add PV at a later date and use the Powerwall to do TOU shifting until I decide if/when I will get PV?
 

sreehyd

Member
Jul 10, 2012
114
44
East Bay, CA
Now that Powerwall OS2 is almost here (yeah I know.... almost) how difficult would it be to add PV at a later date and use the Powerwall to do TOU shifting until I decide if/when I will get PV?


I am in same situation,
It should be fine if you got approval from PG&E for Powerwall, otherwise , They will ask to retract the Powerwall application and submit PV & Powerwall together. Its because , PG&E doesnt allow 2 applications at the same time. So they have to combine Powerwall & PV and submit
 

YYZ QQ

Member
Oct 20, 2017
25
17
Canada
I am in same situation,
It should be fine if you got approval from PG&E for Powerwall, otherwise , They will ask to retract the Powerwall application and submit PV & Powerwall together. Its because , PG&E doesnt allow 2 applications at the same time. So they have to combine Powerwall & PV and submit

I am in Canada (outside Toronto) so PG&E's policies wouldn't apply up here. At least I hope they wouldn't.
 

NuShrike

Member
Nov 13, 2017
459
193
SoCal
From my recent PV installation experience, and I'm still pre-PowerWall, getting the PowerWall install first, or simultaneously, is much less hassle overall for wiring and installation, IMO.

You'll:
  • get any power-panel upgrade first.
  • get the Tesla Gateway mounted next to it immediately.
  • all the necessary wiring/conduits is set, done.
  • PV would just be an extra feeder breaker or panel afterwards.

If you did PV installation first, they:
  • may have to redo the power-panel.
  • mount the PV connections.
  • upon PW installation, rip out all of the PV power-panel changes.
    • possibly pull all of the breakers out of PV upgraded power-panel to put in a sub-panel behind the Tesla Gateway (leaving an empty, wasted power-panel upgrade) for whole-home backup.
  • then the regular PW installation.
 

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