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Which Model Y vehicles support Powershare?
Eligibility is vehicle-specific. Tesla says all Model Y vehicles ordered in the United States or Puerto Rico after October 1, 2026 support Powershare with Powerwall; some earlier vehicles are compatible as well. That order-date statement does not establish eligibility for vehicles in other markets.
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Check the vehicle rather than relying on its model year or trim name: on the touchscreen, open Software > Additional Vehicle Information and look for the Powershare Support indicator. Tesla’s Powershare support page and the Model Y owner’s manual describe the capability and operating requirements.
What equipment does a home need?
For the Powerwall configuration, Tesla identifies a compatible Powerwall system paired with a Universal Wall Connector or Wall Connector 3. The precise configuration depends on the home’s existing energy system; Tesla’s Powerwall Powershare design guidance outlines supported arrangements.
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This is an installed energy system, not a claim that the car can simply be connected to an ordinary household outlet or a home electrical panel to provide whole-home power. Tesla directs customers to a Certified Installer because the appropriate equipment and installation depend on the site.
How much of the home can it power?
The backup scope depends on the system design and the home’s electrical demand. A suitable setup can serve selected essential circuits, and Tesla says some configurations can back up a whole home. The difference matters: a circuit-based installation can prioritize essentials such as refrigeration and lighting, while whole-home backup must be designed around the home’s loads and the system’s capacity. Tesla explains examples and scope in What Can Powershare Back Up?
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How long can a Model Y provide backup power?
Tesla’s support material estimates duration using household consumption of 30 kWh per day. Under that assumption, its estimates are up to two days for Model Y Standard and over two days for Model Y Premium and Performance when paired with Powerwall.
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| Model Y version | Tesla’s estimated duration with Powerwall | Assumption |
|---|---|---|
| Standard | Up to two days | 30 kWh of household use per day; actual results vary |
| Premium | Over two days | 30 kWh of household use per day; actual results vary |
| Performance | Over two days | 30 kWh of household use per day; actual results vary |
These figures are Tesla’s estimates in its Powershare support material, not independent measurements.
What happens during an outage?
The Model Y must remain connected to the home system and have enough energy above its configured discharge limit. When the vehicle begins supplying backup power, the home may experience a brief interruption. Backup ends when grid service returns or the car reaches its discharge limit.
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Output can also be interrupted if household demand is excessive or the vehicle’s high-voltage battery is too cold. Tesla’s manual lists firmware 2026.32.6 or later and Tesla mobile app version 4.60.0 or later as prerequisites for the Powerwall Powershare instructions it documents. Check the manual and vehicle software for applicable requirements before relying on the setup.
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Tesla says Certified Installers perform the installation and that costs vary by system and site. Its cited material does not provide a universal installed price, so a reliable estimate requires an assessment of the home’s existing equipment and the intended backup scope.
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