Does Powerwall 3 support powershare now with no need for gateway?

[Cactusrick]

I bought the universal wall connecter specifically for power share so I'm good there. I just don't want to waste 4.5k on the gateway if a firmware update gets me the same thing on a PW3 with 13.5kWh battery along with it. That will help when the truck is not home. I live in FL so I worry about week long power outages when hurricanes hit. Only getting more frequent.

I'm in the same situation - waiting , hoping

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[hemiarch]

I'm in the same situation - waiting , hoping

 

[Hookalakupua]

My key reason for changing from a Model Y to the Cybertruck was the power share potential. In FL hurricane power outages are a real thing, and the last few times we lost power it was for a week or a little more. Running the nonstop generator was a pain in the ass. I figured by now it all would have been ironed out. I don't want to get the gateway if it can be done with a powerwall and include a battery if I do need to go charge back up to keep the house running.

You guys that do have a powerwall, can you set it so it will only use down to 60% or 70% so it would pull from the cybertruck sooner? Also, do you think it will be able to charge the powerwall battery back up while powering the house from the truck? I know it's all hypothetical at this time since I guess the firmware is not out yet but what do you think?

Yes, you can set the discharge limit for the PowerWall 3 and once that limit is met, the home will start pulling from the grid. My pure assumption is that once PowerShare is available, that the home would be able to switch to the CT. Also makes sense that it would charge the PowerWall 3 as well but I’m far from an electrical engineer! Haha

I think V2H is possible on the new MY Performance and wonder how far it will be for older models. Wink - Wink!

 

[hemiarch]

Yes, you can set the discharge limit for the PowerWall 3 and once that limit is met, the home will start pulling from the grid. My pure assumption is that once PowerShare is available, that the home would be able to switch to the CT. Also makes sense that it would charge the PowerWall 3 as well but I’m far from an electrical engineer! Haha

I think V2H is possible on the new MY Performance and wonder how far it will be for older models. Wink - Wink!

That’s the big question in my mind. Will you be able to charge the powerwall from the truck or will it MAKE you exhaust the powerwalls first and then allow you to run off the truck. This is a BIG difference in terms of ability to “import” power from superchargers in the event of a prolonged outage and still be able to use the truck.
It is also crucial in terms of what loads you can run.
The Cybertruck can’t compete with the inverters in two or three powerwalls strung together so if you can charge the powerwalls off of it you should be able to run much bigger loads with the cybertruck contributing larger storage capacity and the powerwalls contributing larger inverter size to the backup system.

 

[sourdoughbaker]

We've been waiting since the release of CT. The site used to say in 2024 and we heard soon, then late 2024, then 2025, now "later in 2025" is the text. Frustrating. We have seen a tiny indication that they may deliver it though as it lets those of us know with Powerwalls already that "PowerShare isn't available yet for Powerwalls" in the app in small text in the Home Info area.

Same, and it drives me bonkers. they keep on moving their own goalposts.

That’s the big question in my mind. Will you be able to charge the powerwall from the truck or will it MAKE you exhaust the powerwalls first and then allow you to run off the truck.

based on what I read before I was under the impression that it would only kick in in extremis, like no grid power and powerwalls bottomed out. but you'd think a user would be able to set the system (go off-grid, set powerwall minimum threshold) to have the truck kick in earlier. the implementation remains unanswered...

 

[txtravwill]

Same, and it drives me bonkers. they keep on moving their own goalposts.

based on what I read before I was under the impression that it would only kick in in extremis, like no grid power and powerwalls bottomed out. but you'd think a user would be able to set the system (go off-grid, set powerwall minimum threshold) to have the truck kick in earlier. the implementation remains unanswered...

Similar thought but we'll see. I think the PowerWalls are going to have to be used first like you say but will need to remain at a minor percentage where they can intake and balance out the truck's outgoing power. The wifi/wireless connectivity won't quite bit fast or reliable enough fully at 100% always to depend on the truck adjusting perfect, but the PowerWalls can perhaps. I can see the PWs telling the truck to output say 5kWs nonstop for a load but the millisecond that that drops to 1kW only being needed the wifi say may not let the truck react fast enough thus that excess will need to go into the PW or so?

Definitely will be interesting if they pull it off. I'm slightly still worried that they will just give up and say PowerShare only works with the specific gateway, no powerwalls, but solar is ok.

 

[rjmcinnis]

We've been waiting since the release of CT. The site used to say in 2024 and we heard soon, then late 2024, then 2025, now "later in 2025" is the text. Frustrating. We have seen a tiny indication that they may deliver it though as it lets those of us know with Powerwalls already that "PowerShare isn't available yet for Powerwalls" in the app in small text in the Home Info area.

Frustrated here as it was a key reason for getting the CT over other truck since it adds like ~8 powerwalls worth of potential storage to use in an outage situation. We have 21kW solar and 4x powerwall 2s, but its split across two 200 amp systems so we have 2 gateways with each 2 powerwalls, and strings split across them as well/balanced.

This is conceptually what I think I need to do too. Am I correct in assuming that once enabled, the CT will only be able to power one of panels at a time? I was wondering if using a 400a service rated Automatic Transfer Switch would allow both panels to be fed at the same time? But I believe Tesla only makes a 200a ATS, and not sure another brand would work anyway.

I hate the idea of basically buying 2 separate systems to backup two panels. Unless I'm hopefully missing something that ties them together?

 

[txtravwill]

This is conceptually what I think I need to do too. Am I correct in assuming that once enabled, the CT will only be able to power one of panels at a time? I was wondering if using a 400a service rated Automatic Transfer Switch would allow both panels to be fed at the same time? But I believe Tesla only makes a 200a ATS, and not sure another brand would work anyway.

I hate the idea of basically buying 2 separate systems to backup two panels. Unless I'm hopefully missing something that ties them together?

Nah sorry, yeah Tesla only does 200amp gateways, don't see them changing for a while. Yes for us we have 2 gateways, 2 solar systems, 2 sets of powerwalls, 2 panels, and technical 2 bi-directional meters even that get combined. It's a pain, just make sure they balance your strings as best as possible based on the Sun exposure and your load needs on how your panels are splits.

 

[mongo]

This is conceptually what I think I need to do too. Am I correct in assuming that once enabled, the CT will only be able to power one of panels at a time? I was wondering if using a 400a service rated Automatic Transfer Switch would allow both panels to be fed at the same time? But I believe Tesla only makes a 200a ATS, and not sure another brand would work anyway.

I hate the idea of basically buying 2 separate systems to backup two panels. Unless I'm hopefully missing something that ties them together?

You could feed a 400A ATS from the Gateway, but you still only have 11.5kW.

If you have two 200A panels, you can theoretically back up one, then use interlocked breakers or ATS to feed the second panel from a breaker on the first (or from the Gateway itself). Again, loading is an issue.

 

[rjmcinnis]

You could feed a 400A ATS from the Gateway, but you still only have 11.5kW.

If you have two 200A panels, you can theoretically back up one, then use interlocked breakers or ATS to feed the second panel from a breaker on the first (or from the Gateway itself). Again, loading is an issue.

The only time I really ever go over 11.5kW is when charging my EVs, or I suppose when heating my pool while the A/C is running. Neither of which I would need to do during a power outage.

Perhaps it would make more sense to use a 400a ATS instead of multiple Powerwalls?

The only reason I have 400a service is I wanted quite a few dedicated circuits for electronics, and my builder required it. I didn't realize until too late that that really meant 2x200a panels, essentially 2 separate power connections.

 

[mongo]

The only time I really ever go over 11.5kW is when charging my EVs, or I suppose when heating my pool while the A/C is running. Neither of which I would need to do during a power outage.

Perhaps it would make more sense to use a 400a ATS instead of multiple Powerwalls?

The only reason I have 400a service is I wanted quite a few dedicated circuits for electronics, and my builder required it. I didn't realize until too late that that really meant 2x200a panels, essentially 2 separate power connections.

Ideally, the loads would have been partitioned so one panel was the critical/ backed up ones and the other was the extras. Span can do that within a panel, but yeah the dual feeds are an issue.
We have 2x200 also due to an addition and Powershare backs up the original section which is most of what we need.
Dual 200A is more cost-effective versus full 400A equipment.

 

[Tanquen]

I bought the universal wall connecter specifically for power share so I'm good there. I just don't want to waste 4.5k on the gateway if a firmware update gets me the same thing on a PW3 with 13.5kWh battery along with it. That will help when the truck is not home. I live in FL so I worry about week long power outages when hurricanes hit. Only getting more frequent.

My understanding is that the universal charger is only required for powershare with the gateway. If they ever enable powershare with the powerwall 3 directly, you can use the regular wall adapter.

Still no word on when this will be available. At least it's still listed in the app as being a possibility.

 

[PungoteagueDave]

I bought the universal wall connecter specifically for power share so I'm good there. I just don't want to waste 4.5k on the gateway if a firmware update gets me the same thing on a PW3 with 13.5kWh battery along with it. That will help when the truck is not home. I live in FL so I worry about week long power outages when hurricanes hit. Only getting more frequent.

It will work with the promised software update, but not if you have or plan for solar panels. For that you must also have Gateway 3 (not PowerShare Gateway, which is incompatible with solar).

 

[hemiarch]

It will work with the promised software update, but not if you have or plan for solar panels. For that you must also have Gateway 3 (not PowerShare Gateway, which is incompatible with solar).

Wait, what?

 

[PungoteagueDave]

Wait, what?

Yup, Tesla admitted their error in selling me the PowerShare Gateway as a CT option package because they knew when I bought the CT that I was intending powerwall with solar, two chargers, and bidirectional CT support. This was a new house last spring, and the solar/PW3, Gateway/Wallcharger installation team identified the problem the minute they saw the CT in the driveway, and stopped everything, called Tesla, and they swapped the Gateway 3 in for the returned PowerShare gateway. PowerShare gateway in this scenario is a complete no no.

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