Transitioning to Powerwall 3
Description
Powerwall 3 Feature Availability
Feature | Feature Explanation | Availability |
AC Coupling | Ability to install Powerwall 3 alongside stand-alone solar inverters | At launch |
DC Expansion | Additional storage by DC coupling with Power unit | Early 2025 |
Remote Metering | Ability to meter from a remote location | Early 2025 |
Compatibility with Powerwall 2 | Ability to add Powerwall 3 to existing Powerwall 2 storage system | Not compatible |
Frequently Asked Questions (FAQ)
AC Coupling
Is the existing Powerwall 3 hardware capable of AC Coupling?
Yes. Powerwall 3 is capable of AC coupling to existing solar inverters.
What will the PV to PW ratio be?
The PV to PW ratio for AC-coupled solar is 5 kW AC per Powerwall
Can I AC couple Powerwall 3 with microinverters?
Yes. Powerwall 3 can be AC coupled with all major PV inverter architectures (i.e. string, optimizer, microinverter).
Energy Expansion
What is the Energy Expansion?
Energy Expansion units provide an additional 13.5kWh of energy capacity to Powerwall 3 systems. Energy Expansion units are a battery only, with no inverter or site controller. They will be DC-coupled to the Powerwall 3 Power unit via pre-made Energy Expansion wire harnesses. Up to 3 Energy expansion units can be connected to each Powerwall 3. Energy Expansions cannot function without a Powerwall 3.
Compatibility with Powerwall 2
Is Powerwall 3 compatible with Powerwall 2?
Powerwall 3 is not compatible with Powerwall 2.
