Tesla Powerwall 3 rebate for each size
The Powerwall 3 offers 13.5 kWh of usable storage, with solar panels of up to 20 kW fed through its own inverter. Because the federal discount is based on usable kWh, an install by 31 December 2026 gives $3,640 for the 1 Powerwall 3 and $6,600 for the Powerwall 3 + 2 Expansions.
| Battery | Certificates | Federal discount | From January 2027 |
|---|---|---|---|
| 1 Powerwall 3 (13.5 kWh) | 91 | $3,640 | $3,040 |
| Powerwall 3 + 1 Expansion (27 kWh) | 148 | $5,920 | $4,960 |
| Powerwall 3 + 2 Expansions (40.5 kWh) | 165 | $6,600 | $5,520 |
One Powerwall 3 can have up to three Expansion units behind it, and each one adds another 13.5 kWh. Details from the Tesla product page.
Does the Tesla Powerwall 3 qualify for the rebate?
To qualify, it has to be a model the Clean Energy Council has approved, connected to solar, and fitted by an installer accredited with Solar Accreditation Australia. Your installer makes sure your exact model and inverter are on that list when they quote. What it is: lithium-ion, with the solar inverter built in.