2025 AWD and Powershare - First impressions

[mongo]

@mongo , So your saying no matter how many PW3's you add it can only deliver 11kw? Did not know that.

Each PW3 adds 11.5kW of power. Four of them gives 46kW.

 

[carsly]

This is a nice solution, but if your out of town, and your power goes out and you loose heat, and your pipes freeze and bust. It'll cost you way more than that. I know this is an unlikely situation, but it happens.

if you’re away that long in the dead of winter shut the main and drain the pipes ;-)

 

[Gaximus]

if you’re away that long in the dead of winter shut the main and drain the pipes ;-)

I usually do that, but have forgotten, and we’ve had freak storms come in when out of town for just a few days. It’s a piece of mind setup. I can also start up my fireplace if need be, but that requires getting out of bed, and a lot of work, and a lot of time just to get warmth back in the house.
My PowerShare install was only $3700, plus I got all the hardware for free(or 120k with a free truck depending on how you look at it) so its a lot less of a justification to make than OP.

 

[akenis]

I looked into this option and at first it sounds great. The problem with powerwalll is one unit does not provide enough energy to do many useful things. For example to run my heat pump with resistance backup heating would require at least 4 powerwall's. At that point its not very cost effective as you already have a cybertruck with the equivalent of 5-6 powerwalls.

Correct. 1 PW only drives 11.5KW (48 A on 240 V) for 13.5 kWh.

That's infinitely more than a bloated 3V gateway without the truck connected.

With PW AND the Truck plugged in you get 2x the Power....48A x 2, or roughly 100A service. And the capacity of 10 PW.

For extended outage, unplug the truck and go full fillr up while the house stays powered by the PW.

(Actually not sure if the system would use truck or PW first. But I have a disconnect between PW and gateway, so I could conserve the PW and just use the truck until I needed to filler up at a supercharger).

 

[AlmostHuman]

Friendly suggestion: could get a 50 amp generator inlet with a manual lockout done for $1,000-1,500 and add a cable for $150 and you're done. <$2K vs. nearly $10K for the Powershare + installation but it's your money...

You can run more load from the Powershare, more amps. You also get to stay in bed at night when the power goes out

 

[AlmostHuman]

I looked into this option and at first it sounds great. The problem with powerwalll is one unit does not provide enough energy to do many useful things. For example to run my heat pump with resistance backup heating would require at least 4 powerwall's. At that point its not very cost effective as you already have a cybertruck with the equivalent of 5-6 powerwalls.

It for sure is not cost effective We have 4 Powerwalls with solar now, so also waiting for the software update so we can use the truck with the system. The battery in the Cybertruck is more like 9 Powerwalls worth of energy, each Powerwall is only 13.5 user consumable at 3.3 kW charge/discharge rate. Will be rad with the range extender I’m hoping they tune the software so it will allow the truck to deliver more power than the Powerwalls when the grid is out to stretch the time the Powerwalls can hang in there. We had the first 3 Powerwalls installed first, all Powerwall 2 units. It was about a year later we had the fourth unit added and it is a Powerwall 2 but with a newer part number. What I noticed is the newer unit is always delivering a little more power than the older units (based on the whole home energy monitoring solution TED) so if feels like they can do it.

Older part numbers: 2012170-00-A
Newer part number: 3012170-05-B

 

[AlmostHuman]

Correct. 1 PW only drives 11.5KW (48 A on 240 V) for 13.5 kWh.

That's infinitely more than a bloated 3V gateway without the truck connected.

With PW AND the Truck plugged in you get 2x the Power....48A x 2, or roughly 100A service. And the capacity of 10 PW.

For extended outage, unplug the truck and go full fillr up while the house stays powered by the PW.

(Actually not sure if the system would use truck or PW first. But I have a disconnect between PW and gateway, so I could conserve the PW and just use the truck until I needed to filler up at a supercharger).

You could also just shut the Powerwall off with the switch on the unit.

 

[AlmostHuman]

Each PW3 adds 11.5kW of power. Four of them gives 46kW.

Each Powerwall 3 has 13.5 kWh of energy, four of them will give you 54 kWh of energy. Each Powerwall 3 can deliver up to 11.5 kW if configured that way. Our Powerwall 2 units can only deliver 5 kW for example, which is why we started with 3 and ended up with 4, so we can run everything we wanted, including both AC units. :/

 

[mongo]

Each Powerwall 3 has 11.5 kWh of energy, four of them will give you 54 kWh of energy. Each Powerwall 3 can deliver up to 11.5 kW if configured that way. Our Powerwall 2 units can only deliver 5 kW for example, which is why we started with 3 and ended up with 4, so we can run everything we wanted, including both AC units. :/

Yah
Energy: 13.5kWh each
Power: 11.5kW each

 

[eswimm]

My install was $2,400, so it was a no-brainer. There are a couple different install options. You might want to make sure they haven’t picked an overly complicated and expensive option.

 

[AlmostHuman]

Yah
Energy: 13.5kWh each
Power: 11.5kW each

Oh I was just putting more data on it for anyone interested, that is all.

 

[mongo]

Oh I was just putting more data on it for anyone interested, that is all.

Yah, but had typo (that you fixed later)

 

[Speedr]

Anyone heard any updates on Powershare with Powerwalls?

 

[AlmostHuman]

Anyone heard any updates on Powershare with Powerwalls?

Not yet. Still says this on the website. I just tell myself 2026

 

[AlmostHuman]

Another advantage to having a Powerwall in play with solar is you can offset peak energy cost times, of your utility does peak cost. Still takes a while to get the ROI on a system