Adding a second Powerwall 2 after the fact

[James3]

Finally getting my solar with single Powerwall 2 installed tomorrow. Over the last several months while I have waited patiently, along with everyone else, to get my system; I have been thinking that I should have gone with a two Powerwall installation to begin with. (My limited thinking was to go with a simple backup solution and, more importantly, have the ability to used my solar panels when the sun was out and the grid was down.)

Rather than make a change at this late date (permitting, etc.), has anyone out there added an additional Powerwall after the fact? If so, is it as simple as I seem to think it might be? I don't plan to change from powering the secondary panel and go whole house, just want to increase coverage time for outages.

Cheers,
James

 

[Akikiki]

Would you not want to do two to insure you qualify for the 26% fed tax credit with your solar? My point - worth the change.

 

[Amit519]

The federal ITC can still be applied for if one decides to add more powerwalls after a solar installation. The only time one cannot get the federal ITC is when there is no solar to charge them.
Energy Incentives | Powerwall Support

 

[SMAlset]

Mention to your installers when they come that you may want to do an additional PW in the future. We will be getting two and may want to add a third. When talking to Tesla they said they always think it’s a possibility so kind of plan for that but all the same I would bring it up when they come out. Always easier, cheaper to plan for expansion before the fact.

We just stopped tonight by a neighbors install from Friday. He had two PWs installed outside stacked. He was telling us they told him he could add a third stacked if he needed and he showed my husband how the extra conduit connections would run. Seemed like a nice product. Can’t wait for ours. Wish we started this earlier.

Let us know how the install goes.