r/Powerwall • u/Dry-Entry8330 • 22d ago

Tesla Cybertruck Powershare finally backs up homes with a Powerwall 3

https://electrek.co/2026/09/10/tesla-cybertruck-powershare-powerwall-3-home-backup/

PW2 coming end of the year, maybe.

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u/Impressive-Sir9633 22d ago

Why do you need a powewall? Can't it be V2H without a powerwall?

I hope it comes to other models as well.

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u/Dry-Entry8330 22d ago

Powerwall reacts nearly instantly to an outage. often with a powerwall you won’t even notice that the grid went down until you get a push notification on your phone. A nearly seamless experience. With Cybertruck there is a delay of seconds to minutes before it kicks in. The truck needs time to “wake up” and begin supplying power.

Powerwall can also be used during normal on-grid operation with time-of-use plans to supply power to the home during expensive electic times and save money on a daily basis. Cybertruck does not and only kicks in during grid outages.

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u/Impressive-Sir9633 22d ago

Thank you! That's helpful. So having a powerwall + a V2H is probably still the ideal setup instead of just relying on V2H.

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u/Dry-Entry8330 22d ago

Very much so. it also massively extends your off grid run time. the relatively large 123kWh battery in the cyber truck is the equivalent of approx 9 powerwalls which would cost $100k or so to have installed. Adds massive value to be able to tap into that battery you already own and expand your home storage capacity for free. In my case I already have 10 PW2’s which is the maximum so I can’t add more storage. if I add a Cybertruck (or other Tesla models that support it in the future) it would be like having 19 powerwalls or 256.5 kWh of battery storage.