Every Cybertruck supports Powershare, and so does every Model 3 and Model Y ordered in the US after October 1, 2026. For any other Model 3 or Model Y, update to software 2026.32.6 or later, tap the vehicle icon, then Software, then Additional Vehicle Information: if it says “Powershare Support: Enabled,” your car can back up your home; if it doesn’t, a software update won’t change that.
That is the whole test. Below is what each result means, how it applies to used cars, cars on order and Model S or X, and what we tell Texas homeowners whose car says no. If you want the bigger picture of how Model 3 and Model Y back up a house, read our Model 3 and Model Y Powershare explainer first; this guide is only about the check.
The 30-second check
- Update first. Make sure the car is on software 2026.32.6 or later. An older build can hide the line you are looking for.
- Tap the vehicle icon in the bottom-left corner of the touchscreen.
- Tap Software.
- Tap Additional Vehicle Information.
- Find the “Powershare Support” field. “Enabled” means the car has the hardware.
Take a photo of that screen. It is the one thing we ask for when a Model 3 or Model Y owner requests a Powershare quote, because it answers the car question before anyone looks at your panel.
What the result means
| What you see | What it means | Next step |
|---|---|---|
| Powershare Support: Enabled | The car has the bidirectional hardware. | Plan the home side: two Powerwall 3 (our standard package) plus a compatible Wall Connector on its own circuit on the backed-up side. |
| Field missing or not Enabled, software 2026.32.6+ | The car was built without the hardware. | No update will add it. Build the home side now if backup matters to you (see below). |
| Software older than 2026.32.6 | Your car is out of date, so the screen can’t tell you yet. Old software can cause other Powershare problems too. | Connect the car to Wi-Fi, install the latest update, then check again. |
| Cybertruck (any trim) | Capable by default. | Powerwall 3 for whole-home backup, or a Powershare Gateway for partial backup (essential loads). |
“Enabled” on this screen means the car is capable. It does not mean home backup is running. Powershare is switched on with Tesla after the home equipment is installed and paired, which is a separate step covered in our guide to adding Powershare to an existing Powerwall 3.
Model by model
| Vehicle | Powershare home backup? | What it needs at home |
|---|---|---|
| Cybertruck | Yes, every trim | Powershare Gateway plus Universal Wall Connector, or Powerwall 3 plus a compatible Wall Connector |
| Model 3 / Model Y ordered after Oct 1, 2026 (US) | Yes, by default | Powerwall 3 plus Universal Wall Connector or Wall Connector 3 |
| Model 3 / Model Y ordered earlier | Some yes, some no. Check the screen. | Same as above, if Enabled |
| Model S / Model X | No | Not supported |
| Used or Certified Pre-Owned 3/Y | Depends on the build. Check the screen. | Same as new, if Enabled |
Two rules matter for Model 3 and Model Y. First, they need Powerwall at home; Tesla does not offer the Powershare Gateway for them. Powerwall 3 is supported today, and Tesla lists Powerwall 2 and Powerwall+ as coming soon. Second, the Wall Connector must be a Universal Wall Connector or Wall Connector 3. Our guide to which Wall Connector works with Powershare shows how to tell yours apart.
Why some earlier cars have it and others don’t
Powershare needs a part inside the car that lets power flow back out of the battery. Tesla added it to Model 3 and Model Y over time, so some cars built before October 2026 have it and some don’t. Tesla hasn’t said which ones, and owners have reported cars from as early as May 2026 that work. That’s why we don’t go by the build date. The screen in your car is the only way to know for sure.
Buying used or Certified Pre-Owned
- Check the car, not the listing. Listings rarely mention Powershare, so check the car itself.
- On a test drive, open Software, then Additional Vehicle Information. It takes less time than adjusting the mirrors.
- Buying remotely? Ask the seller for a photo of that screen with the software version visible.
- The order-date rule follows the car. A Model Y first ordered after October 1, 2026 is capable regardless of who owns it now.
Car still on order
If you ordered a Model 3 or Model Y after October 1, 2026, Tesla says it is capable by default. If your order was placed before that date and the car hasn’t arrived, ask your Tesla advisor whether the car being built for you is Powershare-capable, then confirm on the screen at delivery. Either way, you don’t have to wait for the car to start the home side.
How to ask Tesla
If the screen is unclear, contact Tesla Customer Support through the Tesla app or tesla.com/support. Have your VIN ready and ask one specific question: “Is this vehicle Powershare-capable for home backup?” A vague question about “V2H” tends to get a vague answer. Tesla support is also who switches Powershare on once your home equipment is installed, so it helps to start that thread early.
If it says no: what to do meanwhile
A “no” on the car doesn’t mean waiting on backup. Powershare was designed so the home system works with or without the car plugged in. Here is what we suggest to Texas homeowners in that spot:
Install Powerwall 3 now
Our standard package is two Powerwall 3 (27 kWh and 23 kW continuous), which runs your home during an outage on its own, with or without a car. Solar is optional and extends backup.
Put the Wall Connector on the backup side
Use a Universal Wall Connector or Wall Connector 3 on the backed-up circuit. You charge on it every day, and it is already wired the way Powershare needs.
Turn Powershare on later
When you get a capable car, Tesla’s install manual says no extra equipment or wiring is needed in a home with Powerwall. Tesla enables the feature in software. Activation can take a little while after install, so we start that request early.
Cybertruck owners
Your truck always qualifies, and it works with Powerwall 3. Pair them and your whole house is backed up, and the truck keeps Powerwall charged during a long outage. The truck can also run without Powerwall using a Powershare Gateway, but that usually backs up only part of the house. See Cybertruck: Gateway only or Powerwall 3?
Comparing Powershare with other ways to keep the lights on? Our Powershare vs standby generator guide lays out the trade-offs honestly, and the Tesla Powershare installation page explains how we install it.
Send us the screen photo
Send a photo of your Additional Vehicle Information screen and a few photos of your electrical panel. We usually quote the same day from photos, no site visit needed, and our own licensed electricians do every install.
Powershare vehicle check: FAQ
How do I check if my Tesla supports Powershare?
Make sure the car is on software 2026.32.6 or later, then tap the vehicle icon in the bottom-left of the touchscreen, tap Software, then Additional Vehicle Information. If it shows Powershare Support: Enabled, the car has the hardware.
Can a software update add Powershare to my Model 3 or Model Y?
No. Powershare depends on the power electronics built into the car. If a car on current software does not show Powershare Support: Enabled, an update will not add it, and Tesla has not announced a retrofit.
Does Model S or Model X support Powershare home backup?
No. Tesla lists Cybertruck, Model 3 and Model Y as Powershare vehicles. Model S and Model X are not included.
I’m buying a used Model Y. How do I know if it has Powershare?
Check the car itself, not the listing. On a test drive, open Software, then Additional Vehicle Information, and look for Powershare Support: Enabled. If you are buying remotely, ask the seller for a photo of that screen showing the software version.
My car doesn’t support Powershare. Should I wait to install anything?
Not necessarily. Powerwall 3 backs up the home on its own, and a Universal Wall Connector or Wall Connector 3 on the backed-up circuit is the same charger Powershare uses later. When you get a capable car, Tesla switches Powershare on with no extra wiring.
Does every Cybertruck support Powershare?
Yes. Tesla says every Cybertruck trim ever built is Powershare-capable. It works with Powerwall 3 for whole-home backup, or with a Powershare Gateway and Universal Wall Connector, which usually backs up only part of the house (the essential loads).
Sources
- Powershare support page (Tesla)
- Powershare (Tesla)
- Tesla Powershare home backup comes to Model 3 and Model Y with Powerwall 3 (Electrek, Oct 6, 2026)
- How to Check If Your Tesla Supports Powershare Home Backup (Not a Tesla App)
- Installation Overview: Powerwall System with Wall Connector (Tesla Energy Library)
- Powerwall support (Tesla)