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

[hemiarch]

When I asked them about it, they said in this scenario the truck would never be powering the house directly. It would be feeding power to the powerwall when the powerwall was low or out of charge and then that would be powering the house. But just because someone at Tesla told me that doesn't really mean anything. So the truck and future vehicles act like an expansion battery pack to the power wall. And that's what I wanted. I only got one powerwall 3 and it's winter now and there's not enough solar during the day to completely recharge the powerwall. 3. So if I had a power outage right now after running on battery overnight, I'd not have any power. But then there's like six or seven power walls sitting out in the truck basically. So if they enable power share at some point I'll not need to worry about the power going out anymore.

That’s what I ideally want too. The other thing is inverter size. In my case, there are two powerwalls so the sum of the inverters exceeds 11kw and allows me to comfortably run my house as normal including AC or heat pool pump appliances etc.
That would be a stretch for the 11 or so kw the truck could provide.

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[Tanquen]

That’s what I ideally want too. The other thing is inverter size. In my case, there are two powerwalls so the sum of the inverters exceeds 11kw and allows me to comfortably run my house as normal including AC or heat pool pump appliances etc.
That would be a stretch for the 11 or so kw the truck could provide.

Wow, that's a lot of baseline power draw. The lowest my house gets is 300 w and that's from, I believe, all the security cameras and media players and networking hardware. That's just always on.

During the day when the HVAC heat pump is running and the water heaters, heat pump is running and I have my workstation powered on. I'm at about 1.6 KW. It's hard to imagine needing to draw 11 KW.

Hopefully it's smart enough to start backfilling your powerwalls as soon as it knows the utility power is out. Or at least there should be a setting to do so.

 

[mongo]

You had said that a PowerShare gateway was required with the backup switch. That doesn't appear to be the case.

Sorry, not sure where the confusion is but I have the powerwall 3 with a backup switch with solar. I asked them if the universal connector was needed for powershare and then they added it but it wasn't originally in there and now that I've looked it up I've seen a couple different places that say it's not required for PowerShare when you're using a Powerwall 3.

Installation Without Powerwall
Universal Wall Connector and Powershare Gateway allow you to connect Cybertruck to your home and use battery power to help keep your lights on and appliances powered while disconnected from the grid.


Installation With Powerwall
With Universal Wall Connector or Wall Connector and Powerwall, your home starts using energy stored in Cybertruck instantly when an outage is detected, with Powerwall helping to extend backup duration further.

For a pure Powershare (non-Powerwall) system, to use the Backup Switch, a Powershare Gateway is still required.

For a Powerwall system, the Backup Switch replaces the Gateway. Once software is released, Cybertruck will contribute to back up.

 

[mongo]

When I asked them about it, they said in this scenario the truck would never be powering the house directly. It would be feeding power to the powerwall when the powerwall was low or out of charge and then that would be powering the house. But just because someone at Tesla told me that doesn't really mean anything.

Yeah, that's not how electricity works...
If the truck is charging the PW, the PW is not powering the house.
If you connected the trucks HVDC to the PV input, it would work that way though.

That language is kind of interesting. Makes it sound like the truck battery will be used first and only then will the powerwall be tapped for backup.

I think the way it will work is the Powerwall tells the the truck to output X amount of power. Then the Powerwall adds to, or charges from, the local grid to maintain voltage/ frequency stability. This way, the truck doesn't need to coordinate in a high frequency sort of way and acts more like another solar source, like PW already deal with.
Truck could also implement variable output based on voltage/ frequency deviation.

 

[hemiarch]

Wow, that's a lot of baseline power draw. The lowest my house gets is 300 w and that's from, I believe, all the security cameras and media players and networking hardware. That's just always on.

During the day when the HVAC heat pump is running and the water heaters, heat pump is running and I have my workstation powered on. I'm at about 1.6 KW. It's hard to imagine needing to draw 11 KW.

Hopefully it's smart enough to start backfilling your powerwalls as soon as it knows the utility power is out. Or at least there should be a setting to do so.

Mine goes down to about 300-500w too and that’s the water heater maintaining, the kitchen fridge/freezer, the garage freezer, the security system, internet router and low energy setting on the pool pump and sprinkler system. With the nest thermostat in eco.
In mid summer here in Arizona if I remotely turn my ac on to make the house not unbearable when we get there, the hvac by itself draws about 7.5kw. If you also run the washer and dryer simultaneously with that, you’re pretty close to 11kw without doing anything else.

 

[Tanquen]

Yeah, that's not how electricity works...
If the truck is charging the PW, the PW is not powering the house.
If you connected the trucks HVDC to the PV input, it would work that way though.



I think the way it will work is the Powerwall tells the the truck to output X amount of power. Then the Powerwall adds to, or charges from, the local grid to maintain voltage/ frequency stability. This way, the truck doesn't need to coordinate in a high frequency sort of way and acts more like another solar source, like PW already deal with.
Truck could also implement variable output based on voltage/ frequency deviation.

Yeah, without a dedicated connection from the truck to the powerwall, I'm guessing there's no way for that to work.

But the powerwall can be charged from utility power or power that's in the house and the powershare from the EV could become that, when the utilities out. So if the output of the EV is great enough, it could power what's in the house and charge the powerwall but I'm unsure if there's a point in doing that. If the utility power is out, use what's in the powerwall and then use what's in the EV. I guess there could be a scenario where you'd want to leave some power in the powerwalls so that it can start equipment that needs larger power draw or something of that nature.

 

[TyPope]

I don’t have anything installed that looks like a little white Tesla box . My solar goes into my powerwall 3’s and I have a round thing behind my city meter that as I understand it is what disconnects me from the grid whenever I’m in off-grid mode. My vehicle chargers come off the same box (breaker panel) as everything else in the house with a breaker. 60 amp if I remember correctly.
I do worry I may have to move one of my chargers to a separate circuit eventually because my UWC and gen3 charger share a breaker and are set up with group power management (note that I’m not using the term PowerShare for this which Tesla previously used to describe it because that makes everything even more confusing)
This means I have the backup switch and not the gateway correct?
The third party installer who did this for me knows even less than Tesla does so I’m trying to understand from you guys collective experience whether I will be able to use PowerShare. By PowerShare I mean powering the house from the truck.

This. This sounds like what I want to do at the next house.
1. Solar
2. 2 x powerwall 3
3. Truck connected via UWC

I currently have whatever came with the FS Cyberbeast. My truck backs up a few circuits of my house and we are thinking about removing all the Tesla stuff prior to sale because the Tesla Breaker box thingy is only useful with the Cybertruck.

My question: What should I remove and what should I leave when I go? Keep in mind that all the wires for the house's original setup will be easy to reassemble and I'll be resetting the house to well, almost stock configuration. I'll leave a 220V external outlet box in place of the UWC and a 220v internal outlet box in place of the regular WC that charges my wife's MY in the garage.

Does it make sense to take the Tesla panel (PS Gateway?) with me to a house where I'll have solar?

 

[Tanquen]

Mine goes down to about 300-500w too and that’s the water heater maintaining, the kitchen fridge/freezer, the garage freezer, the security system, internet router and low energy setting on the pool pump and sprinkler system. With the nest thermostat in eco.
In mid summer here in Arizona if I remotely turn my ac on to make the house not unbearable when we get there, the hvac by itself draws about 7.5kw. If you also run the washer and dryer simultaneously with that, you’re pretty close to 11kw without doing anything else.

They're supposed to be installing a SPAN IO panel today and I look forward to being able to see more about what's using what in the house.

My heat pump, water heater and heat pump HVAC both appear to use about 500 w or so when they're actively running. When the HVAC's not running the heat pump it's still running a fan but I've not really been able to detect that running. The old HVAC without a heat pump. I'm sure drew a lot more power when it kicked on 5 or 10 minutes every hour.

 

[mongo]

This. This sounds like what I want to do at the next house.
1. Solar
2. 2 x powerwall 3
3. Truck connected via UWC

I currently have whatever came with the FS Cyberbeast. My truck backs up a few circuits of my house and we are thinking about removing all the Tesla stuff prior to sale because the Tesla Breaker box thingy is only useful with the Cybertruck.

My question: What should I remove and what should I leave when I go? Keep in mind that all the wires for the house's original setup will be easy to reassemble and I'll be resetting the house to well, almost stock configuration. I'll leave a 220V external outlet box in place of the UWC and a 220v internal outlet box in place of the regular WC that charges my wife's MY in the garage.

Does it make sense to take the Tesla panel (PS Gateway?) with me to a house where I'll have solar?

If you are getting PW at the next house, leave all the Powershare stuff with the house. Powershare Gateway does you no good and UWC can be a selling point.

 

[Tanquen]

This. This sounds like what I want to do at the next house.
1. Solar
2. 2 x powerwall 3
3. Truck connected via UWC

I currently have whatever came with the FS Cyberbeast. My truck backs up a few circuits of my house and we are thinking about removing all the Tesla stuff prior to sale because the Tesla Breaker box thingy is only useful with the Cybertruck.

My question: What should I remove and what should I leave when I go? Keep in mind that all the wires for the house's original setup will be easy to reassemble and I'll be resetting the house to well, almost stock configuration. I'll leave a 220V external outlet box in place of the UWC and a 220v internal outlet box in place of the regular WC that charges my wife's MY in the garage.

Does it make sense to take the Tesla panel (PS Gateway?) with me to a house where I'll have solar?

I think you have the powershare gateway currently and that won't work with solar.

FYI, I don't think you don't need the universal wall connector if you have a powerwall 3. The universal wall connector was only needed with the powershare gateway, but it does give you the extra adapter if somebody's got an EV without the Tesla version of connector.

 

[mongo]

Yeah, without a dedicated connection from the truck to the powerwall, I'm guessing there's no way for that to work.

But the powerwall can be charged from utility power or power that's in the house and the powershare from the EV could become that, when the utilities out. So if the output of the EV is great enough, it could power what's in the house and charge the powerwall but I'm unsure if there's a point in doing that. If the utility power is out, use what's in the powerwall and then use what's in the EV. I guess there could be a scenario where you'd want to leave some power in the powerwalls so that it can start equipment that needs larger power draw or something of that nature.

Yah, truck could fill Powerwalls. And, if needed, go charge where there is power. Rinse and repeat. (Hopefully, at least)

I think you have the powershare gateway currently in that and that won't work with solar.

It works with solar, but not with Powerwalls.

 

[Tanquen]

And, if needed, go charge where there is power. Rinse and repeat. (Hopefully, at least)

I had actually talked to friends and family about that. If we have fires again and the power's out for a long time. I can go fill up the truck and bring back power. I do imagine that being painful in that scenario though everybody trying to do the same thing.

 

[hemiarch]

I had actually talked to friends and family about that. If we have fires again and the power's out for a long time. I can go fill up the truck and bring back power. I do imagine that being painful in that scenario though everybody trying to do the same thing.

Might be tricky for people like me with free supercharging. What would Tesla consider excessive use? isn’t a question I’m that interested in pondering.

 

[Tanquen]

Might be tricky for people like me with free supercharging. What would Tesla consider excessive use? isn’t a question I’m that interested in pondering.

I'm sure they'd crack down on that pretty quick, seeing seeing cars with almost zero miles charging up to full repeatedly.

At the same time, I'm surprised somebody's not offering a service, to bring their EV to your house and dump extra power.

Hey man, where'd you get that power? It fell off the back of a truck. Don't worry about it.

 

[hemiarch]

I'm sure they'd crack down on that pretty quick, seeing seeing cars with almost zero miles charging up to full repeatedly.

At the same time, I'm surprised somebody's not offering a service, to bring their EV to your house and dump extra power.

Hey man, where'd you get that power? It fell off the back of a truck. Don't worry about it.

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