Powerwall 3 Compatibility With Powerwall 2
A software update is coming soon that will include a new feature in which Powerwall 3 will be compatible with Powerwall 2.
This feature of Backwards Compatibility allows existing Powerwall 2 owners to expand their home energy system for greater savings and increased energy independence. The feature will be enabled through an upcoming software update. When available, customers can work with their original Tesla Certified Installer or find a new Tesla Certified Installer for supported configurations and pricing.
Sign up to receive updates when it becomes available.
What to Expect
Powerwall 3 is not currently compatible with Powerwall 2 systems. However, a future software update is expected to enable combined operation between Powerwall 2, Powerwall 3 and Powerwall 3 Expansion units. To stay informed about the availability of this feature, sign up for updates.
Note: Installation must be performed by a Tesla Certified Installer to ensure safety, proper integration and warranty compliance.
Incentives
Once the software update is available, homeowners may also be eligible for:
- Powerwall 3 and Powerwall 3 Expansion units, with discounts available under the Cheaper Home Batteries Program
- Up to AUD $1,500 back with Tesla’s Virtual Visa® Reward Card offer when you order Powerwall 3 or Powerwall 3 Expansion units by June 30, 2026, and install by December 31, 2026
Frequently Asked Questions
When will the Powerwall 3 compatibility with Powerwall 2 feature be launched?
Compatibility will soon be available with an upcoming software update. Sign up for updates to be notified.
What system configurations are supported at launch?
Supported system configurations will include up to four Powerwall 2 units, one Powerwall 3 unit and up to three Powerwall 3 Expansion units. When installing on a three-phase grid connection, Powerwall 3 output will be limited to 5 kW. Gateway 1 and Neurio Meter are not supported. Contact your Tesla Certified Installer to appropriately size, configure or upgrade your system.
Will adding Powerwall 3 affect my Powerwall 2 warranty?
No. Powerwall 2 retains its original warranty. Powerwall 3 and Powerwall 3 Expansion units include a 10-year warranty.
What if my Powerwall 2 CEC listing has expired?
When adding Powerwall 3 to an existing Powerwall 2, only the CEC listing for Powerwall 3 will be required. Your existing Powerwall 2 systems will remain compliant. New Powerwall 3 and Powerwall 3 Expansion units will be installed under a new connection agreement and are CEC‑listed.