Tesla home battery
Tesla Powerwall 3 AC
The Tesla Powerwall 3 AC is a home battery with 4 models on the Clean Energy Council approved list as at 23 Sept 2026, with usable capacity from 13.5 kWh to 54 kWh.
Key specs
- Usable energy
- 13.5 kWh AC (expandable to 54 kWh)
- Nominal output power
- 5 kW
- Battery to home/grid efficiency
- 89%
- Phases
- Single phase
- Warranty
- 10 years
Copied from Tesla's own datasheet, checked 1 Oct 2026. Figures can differ between models in the range. Open the datasheet
Questions to ask installers about the Powerwall 3 AC
- Which size suits my usage, and is that usable capacity or nominal capacity?
- Which inverter will it run with, and does my existing solar need to change?
- Will it keep power on in a blackout, and which circuits are backed up?
- What does the warranty cover, for how long, and is there a throughput or cycle limit?
- Where will it be installed, and does that location suit its protection rating?
- Can I add capacity later, and can it join a virtual power plant?
Our home battery guide explains each of these, and the battery cost guide covers what affects the price.
Approved Powerwall 3 AC models
4 current models
| Model | Usable capacity | Nominal capacity | Approved until |
|---|---|---|---|
| 1707000-ACPW3-13.5 | 13.5 kWh | 14.4 kWh | 31 Dec 2027 |
| 1707000-ACPW3-27 | 27 kWh | 28.8 kWh | 31 Dec 2027 |
| 1707000-ACPW3-40.5 | 40.5 kWh | 43.2 kWh | 31 Dec 2027 |
| 1707000-ACPW3-54 | 54 kWh | 57.6 kWh | 31 Dec 2027 |
More from Tesla
Before you choose
Source: Clean Energy Council approved products lists, data as at 23 Sept 2026. Approval means a product meets the standards needed to be installed with government small-scale technology certificates (STCs). It isn't a recommendation, and Energy Quotes doesn't rank products. Check the manufacturer's datasheet and ask your installer before you buy.
Energy Quotes isn't affiliated with Tesla. Listing a product doesn't mean participating installers sell it. Mention it in the quote form and installers will tell you whether they can supply it.
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