2026-10-13 · Industry News · EVs for Idiots
On October 6, 2026, Tesla turned on Powershare home backup for the Model 3 and Model Y. When the power goes out, your car can now run your house. Until now, the Cybertruck was the only Tesla that could do it, and Ford has been doing it with the F-150 Lightning since 2022, so this is Tesla catching up, not inventing anything. It is still a big deal, because the Model Y is the best-selling EV in America by a mile. Here is who actually gets it, what you need, and the catch.
Forget the forums. Your car will tell you. On the touchscreen, tap Software, then Additional Vehicle Info, and look for a line that says "Powershare Support: Enabled." If it says enabled, you are set. If it does not, your car is missing the part that makes this possible: a bidirectional onboard inverter (Tesla calls its version PCS2 Lite) that lets the car send power back out instead of only taking it in. That is hardware, so a software update cannot add it. Beyond that, here is how it breaks down:
This is the catch. A Model 3 or Model Y can only back up your house through a Powerwall 3, Tesla's home battery, plus a Tesla Wall Connector or Universal Wall Connector to plug into. Tesla says Powerwall 2 and Powerwall+ support is "coming soon," so owners of the older batteries have to wait. If you already have a Powerwall 3 and a Wall Connector, Tesla says no extra hardware is needed, but an installer has to confirm the Wall Connector is on your home's backup circuit and meets local code, and you contact Tesla to turn it on. On a brand-new Powerwall 3 install, it can be set up from the start.
Why the Powerwall? Getting power out of the car is only half the job. During an outage, your house has to be cut off from the grid so the power from your car (and from the Powerwall) stays in your house and never back-feeds the lines a utility crew is working on. The Powerwall 3 system's backup equipment handles that switch-over. Ford and GM sell their own separate inverter and backup boxes to do the same thing, so every brand's version needs extra hardware at the house.
Cybertruck owners have a second option: a Powershare Gateway lets the truck back up the house without a Powerwall at all. That option is not offered for the Model 3 or Model Y.
Tesla's estimates assume a home that uses 30 kWh a day and a car charged to 90%. That is a realistic household: the Energy Information Administration says the average US home bought 10,791 kWh of electricity in 2022, or about 30 kWh a day. The system delivers up to 11.52 kW at a time, enough for most of a house, but running the AC, the oven and the dryer at once will drain it much faster than the estimates below.
| Vehicle | Extra backup from the car | What else you need |
|---|---|---|
| Cybertruck | Over three days | Powerwall, or a Powershare Gateway |
| Model 3 / Model Y (Premium and Performance) | Over two days | Powerwall 3 and a Wall Connector |
| Model 3 / Model Y Standard | Up to two days | Powerwall 3 and a Wall Connector |
If you already own a Powerwall 3, this is a free upgrade, and a good one: your car just became a second, much bigger home battery. If you don't, the real price of this feature is the Powerwall. Installer estimates put a single Powerwall 3 at roughly $12,000 to $16,500 installed in 2026, and the 30% federal tax credit for home batteries is gone: the IRS says it does not apply to expenditures made after December 31, 2025. Some states and utilities still offer battery rebates, so check yours before you buy.
Be honest about why you want it. If you lose power once a year for a few hours, a five-figure battery is an expensive way to keep the fridge cold. If you live somewhere with long outages, or you were already planning solar and a battery, turning your car into extra backup is a genuinely great deal.
Ford launched home backup on the F-150 Lightning in 2022 at 9.6 kW. GM committed in 2023 to bring vehicle-to-home to every EV on its Ultium platform, and its list now includes the Equinox EV, Blazer EV, Silverado EV and the new 2027 Chevy Bolt. Kia offers it on the EV9 with a Wallbox bidirectional charger. Ford and GM need a separate inverter and backup hardware at the house too, so nobody's version is plug-and-play. Tesla first said bidirectional charging was coming "within the next two years" back in 2023, so this one took a while.
For most people, no. It is a nice bonus, not a reason to pick a car. The reason most people switch is still the everyday math: charging at home costs the same per mile as gas at about $1.50 a gallon. But if outages are a real problem where you live and you already own or want a home battery, the Model Y just became one of the best home backup options on the market. And if you are buying one, run the dealer's quote through the free Deal-Checker first.
If it is a Cybertruck, or a Model 3 or Model Y ordered on or after October 1, 2026 in the US or Puerto Rico, yes, with the right home hardware. Some older Model 3 and Model Y cars can too. Model S and Model X are not included.
For a Model 3 or Model Y, yes: you need a Powerwall 3 plus a Tesla Wall Connector or Universal Wall Connector. Tesla says Powerwall 2 and Powerwall+ support is coming soon. The Cybertruck can also work without a Powerwall through a Powershare Gateway.
On the touchscreen, go to Software, then Additional Vehicle Info, and look for "Powershare Support: Enabled." Cars ordered on or after October 1, 2026 have it. Tesla says some, but not all, earlier cars have the hardware too. It needs a bidirectional onboard inverter, so a software update cannot add it to a car without one.
Tesla says a Model 3 or Model Y adds over two days of backup (up to two days for the Standard versions), assuming a home that uses 30 kWh a day and a car charged to 90%. The setup delivers up to 11.52 kW at a time, so running everything at once drains it faster.
Not with a Model 3 or Model Y. Tesla says Powershare Grid Support is not available for them yet. Home backup only works when the grid is down.
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Sources: Electrek: Tesla Model 3 and Model Y can finally power your home (Oct 6, 2026), Tesla: Powershare, Not a Tesla App: Powershare home backup for Model 3 and Y, Solar Power World: Tesla's full EV lineup can now provide home backup, U.S. EIA: How much electricity does an American home use?, IRS: Clean energy credit termination dates, Jouleio: Tesla Powerwall cost in 2026