On September 10, 2026, Tesla announced that the Cybertruck Powershare feature could now power a home alongside the Powerwall 3 battery. According to the company, operating the home battery together with the Cybertruck’s 123-kilowatt-hour battery pack can provide more than three days of backup power, or roughly the equivalent capacity of nine additional Powerwall batteries.
The change addresses a limitation that had existed since the launch of Powershare. The Cybertruck could support a home, but not if the home was already equipped with a Powerwall battery; the owner had to choose one of the two sources. As a result, users who had already purchased Tesla’s home energy system were unable to benefit from the truck’s battery as an extension of it.
What changes in practice?
With the update, Powerwall 3 continues managing the home as before, while the Cybertruck battery adds longer runtime. The article says Tesla’s calculation is based on the Powerwall’s 13.5-kilowatt-hour capacity; nine batteries of this type approach the Cybertruck battery’s 123-kilowatt-hour capacity.
Powershare delivers up to 11.5 kilowatts of power to the home, but it requires a Universal Wall Connector and a Powershare Gateway. Available information indicates that the cost of this equipment, including installation, is around $4,000, with much higher quotes also reported; one owner received a quote exceeding $30,000.
A delayed update after earlier promises
Tesla launched Powershare with the Cybertruck in late 2023, then said in October 2024 that Powerwall integration would arrive sometime during 2025. The deadline passed without a launch, before the company postponed the timeframe in December 2025 to mid-2026, acknowledging that this was approximately a full year later than the date communicated to owners. As of late August 2026, Wes Morrill, Cybertruck’s chief engineer, had not announced a specific date.
According to the company’s explanation, the system had to safely coordinate two devices capable of forming an electrical grid—the truck and Powerwall—without relying on the grid, despite differences between hardware generations. The system also needed to complete the relevant electrical-grid safety certifications.
Why does this news matter?
The update’s significance lies in turning the Cybertruck from a separate backup source into an actual part of the existing Powerwall-based home energy system. This expands the practical benefit for owners of both products, but it does not eliminate the hardware requirements or installation costs, and the source does not specify the geographic availability range or compatibility details for every home.
This follows other Tesla efforts to use the Cybertruck battery as a grid-connected asset. The company launched a vehicle-to-grid program in Texas during February 2026 and made the truck the first vehicle asset with AC vehicle-to-grid technology in California through PG&E in April. Support for the home alongside Powerwall 3 remains the last major consumer component of the Powershare system that had been missing, according to the source material.