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Every Tesla Model 3 and Model Y built in the US as of October 1, 2026 is capable of vehicle-to-home (V2H) operation, according to the Not A Tesla app. In fact, some cars manufactured in April may have the update available, as some cars were equipped with the necessary hardware as soon as it became available, even in limited quantities. To see if your car has the technology enabled:
Gonna Settings > Software on your car’s touch screen.
Select Additional vehicle information.
if you see Powershare Support: Enabledyou’re ready to go.
If your car does not have the Powershare feature, it is not something that can be added via a software update because it requires new power electronics. For the latest self-driving capability, owners can choose to have their Tesla Service Center upgrade their computer from HW3 to HW4 specifications. Tesla has not yet said anything about whether a hardware update will be available to update cars built before October 1 to enable V2H operation.
On its website, Tesla says the Powershare system was originally developed for use with the Cybertruck. “The Powershare Home Backup package allows you to use the energy stored in your [Cybertruck’s] battery to power your home during power outages. Includes a universal wall connector and Powershare gateway for a complete home backup system. Both products are required for Powershare functionality unless your home already has a Powerwall residential battery storage.” Professional installation required and not included.
Model 3 and Model Y owners will need a Powerwall 3 residential storage battery along with a wall connector or universal wall connector, but not a separate Powershare Gateway. Only the Cybertruck is capable of V2H operation without a Tesla Powerwall, but requires the installation of a Powershare Gateway as part of the system. According to Solar Power World, support for Powerwall 2 and Powerwall+ is coming soon.
11.5 kW power
The Powershare system can supply a maximum of 11.5 kW of clean, quiet, maintenance-free backup power to a home. Based on an estimated daily usage of 30 kWh, a Model 3 or Model Y battery can power a residence for about two days, if charged to 90 percent or more initially.
On Tesla’s website, the company says: “To install, you must be a homeowner, be able to park your vehicle on your property within 20 feet of your installation location, and have an electrical panel rating of <225A. Please check with a Tesla certified installer for compatibility with existing non-Tesla home battery systems." That language applies to the Cybertruck, but it should also apply to the Model 3 and Model Y.
“With Powershare Home Backup, choosing a Tesla is no longer just a decision to buy an electric vehicle. It’s a decision to invest in the energy resilience of the home,” said Colby Hastings, senior director of residential energy at Tesla. “Our vehicles and Powerwall are even better when used together – each increases the value of the other.”
There are currently more than 100,000 people without power in Alabama, Florida and Georgia. It’s fashionable among those who rely on anti-social networks for information to laugh at stupid EV drivers who can’t charge their cars if the power goes out.
Apparently, those geniuses have never stopped to realize that gasoline pumps also stop working if there is no electricity. There has never been a petrol car made that can power a house for a couple of days during a grid outage. Residential backup generators can cost up to $15,000 installed, which is about a third of the cost of a new Tesla.
EV4EU Study
An electric car battery can do much more than just keep the lights on in a house for a day or two. When connected to the grid, it can generate income for the vehicle owner by helping to stabilize the electrical grid and absorb excess renewable energy that would otherwise be wasted. The European Union has just concluded a four-year study on vehicle-to-grid technologies.
“Beyond hardware and software, EV4EU provided key insights into user engagement, putting citizens at the center of V2X management strategies,” project coordinator Hugo Morais said in the study’s final report. One of the project’s many successes was the “design and successful testing of a fully functional bi-directional charging station prototype using standard combined charging system technology.”
Another part of the success story was the creation of open source tools for charging point operators that handle communications based on smart/two-way charging standards. Finally, EV4EU explored a solution whereby a virtual power plant manages the flexibility of electric vehicles by optimizing different resources and taking advantage of available energy markets. “This approach can increase revenue while offering direct benefits to users,” Morais said.
The EV4EU program successfully tested a series of flexibility solutions and management strategies in four EU countries. In Portugal, the team integrated bi-directional charging points in residences and public buildings, achieving an average cost reduction of 14 percent in home charging and an increase of almost 22 percent in the integration of renewable energy.
In Slovenia, the team integrated virtual power plants and local market platforms into office buildings and schools. The flexible capacity in loading and unloading demonstrated the added value of V2X over standard smart charging. In Athens, the study focused on public charging environments and the impact of electric vehicles on the grid. Validated the importance of dynamic pricing and flexible capacity contracts.
In Denmark, the program focused on managing charging pools in parking lots, particularly where local renewable generation was available. Using distributed control algorithms created for the study, three-phase power imbalances were reduced, utilization of local renewables was maximized, and costs and use of fossil fuels were reduced.
whole ball of wax
In addition to technical feasibility, EV4EU also studied various business models, regulatory frameworks and the needs of vehicle users. Based on his four years of study, he concluded that bidirectional charging can only function as a flexibility option if the mobility requirements of drivers and battery aging are taken into account. Appropriate control algorithms can optimize charging and discharging to reduce stress on the battery.
The results show that V2X goes beyond individual vehicles and charging technologies: coordinated communication, appropriate market models and incentives for participants are required. The project provides proven technical approaches and practical knowledge for this purpose. “The next step is to implement these solutions on a larger scale and under the respective national networks and market conditions,” according to Electrive.
Previously, Tesla avoided V2H or V2G technology for fear of shortening the life of its cars’ batteries. But now, evidence shows that battery degradation is not the problem it was once thought. In fact, batteries today last longer than the cars they power.
It’s intriguing to imagine that in a few years, tens of thousands of electric cars could be networked to absorb excess renewable energy and form virtual power plants for communities. The electric vehicle revolution goes beyond simple driving with electrons. It opens up entirely new ecosystems that never existed before. The future is so bright we have to wear sunglasses!
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