Q about PowerShare and how it works

[dt99]

Hi Cybertruck owners,

I am a future owner, but as I wait, I'm planning energy upgrades for my home, and this exercise got me thinking about the Powershare system. My question is: can one program your home to use the CT's battery for energy during the day (when energy is expensive)? The reason I ask is because we have very low rates in our area at night and it'll be great if I can charge the CT's battery at night (when energy is cheap) and use it during the day (when energy is more expensive). Basically, can you use the CT as a Powerwall?

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[Car Charger Specialists]

Hi Cybertruck owners,

I am a future owner, but as I wait, I'm planning energy upgrades for my home, and this exercise got me thinking about the Powershare system. My question is: can one program your home to use the CT's battery for energy during the day (when energy is expensive)? The reason I ask is because we have very low rates in our area at night and it'll be great if I can charge the CT's battery at night (when energy is cheap) and use it during the day (when energy is more expensive). Basically, can you use the CT as a Powerwall?

Hopefully soon! V2G has been in the works for some time now, but it’s getting close! https://electrek.co/2025/02/21/nema-bidirectional-ev-charging-standard/

 

[CyberGus]

My question is: can one program your home to use the CT's battery for energy during the day (when energy is expensive)?

The short answer is: no. The truck is intended to supply power to the home occasionally, not to provide arbitrage.

 

[AlmostHuman]

My understanding is no, that is not in the plans for Powershare. You could add a single Powerwall to help a little and also give you instant backup power in an outage. You would have to wait for Powershare firmware to come out before you can use your truck if you did that. This is the situation I (and others) are in right now.

 

[Biddi]

I mean technically you can...the 3V powershare gateway that they installed for me has a manual breaker to cut your house from the meter. I used it to test...I suppose you could charge at night, and manually switch it to run off the truck during the day.

 

[BikerPilot]

I mean technically you can...the 3V powershare gateway that they installed for me has a manual breaker to cut your house from the meter. I used it to test...I suppose you could charge at night, and manually switch it to run off the truck during the day.

Yes would indeed work. However....the Universal Charger is connected to the powershare unit. When you flip the breaker to the powershare, power is momentarily lost for a few seconds. During that time, the Universal Charger goes in to pairing mode and loses the WiFi settings, which sometimes can be a pain to reprogram (took me 2 hours last time and had no idea why on a sudden it worked again). So: no recommended!

 

[QuantumGlen]

Yes would indeed work. However....the Universal Charger is connected to the powershare unit. When you flip the breaker to the powershare, power is momentarily lost for a few seconds. During that time, the Universal Charger goes in to pairing mode and loses the WiFi settings, which sometimes can be a pain to reprogram (took me 2 hours last time and had no idea why on a sudden it worked again). So: no recommended!

Put your wifi hub onto a UPS, and you won't have that switchover problem.

 

[BikerPilot]

Put your wifi hub onto a UPS, and you won't have that switchover problem.

I will try that, but it should be unnecessary. The Universal Charger should have a different option to get in to pairing mode, rather than a power loss doing so. It should simply keep the current setting until manually request to repair (like a reset button or something similar).

 

[koolio]

Everyone has answered your question but I’ll mention this to make it super clear (bc I spent some time researching it): if you do have a Powerwall and a Wall Connector (or Universal Wall Connector) on a 240v circuit, you’ll get PowerShare for free sometime this year as a Powerwall firmware update.

 

[eswimm]

There's certainly nothing technically preventing this functionality and a few weeks ago, the Tesla app actually had an option to go on and off grid on demand (it has since vanished). My assumption is that there could be some battery warranty implications to work out since you conceivably put >100k miles in battery wear on the truck annually (assuming ~12h charging and ~12h discharging daily).

 

[mikegbne]

Why did they remove the ability to “go off grid” with PowerShare? I understand they dont want people depleting their CyberTrucks everyday but I was helpful from time to time to test its functionality. I think they should bring it back into the app. And yes, I am aware that I can just flip the breaker but it was easier with the app

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