Tesla Powerwall 3 Review
The Tesla Powerwall 3 remains one of the most popular home batteries in Australia. We review its specs, real-world performance, and whether it's worth the premium price.
Quick Verdict
The Powerwall 3 is a premium battery with excellent performance and the best app experience. Ideal for Tesla ecosystem users and those who want maximum power output for backup.
Prices are approximate and include installation. Federal rebate may reduce cost by ~30%.
Get Powerwall QuotesTechnical Specifications
Pros & Cons
thumb_upPros
- check_circleIndustry-leading 11.5kW peak power output
- check_circleSleek, compact design suitable for indoor/outdoor
- check_circleExcellent app and monitoring system
- check_circleSeamless integration with Tesla Solar
- check_circleStorm Watch feature for blackout preparation
- check_circleTime-based control for tariff optimisation
thumb_downCons
- cancelPremium price point
- cancelRequires Tesla-certified installer
- cancelLimited third-party inverter compatibility
- cancelLonger wait times due to demand
Real-World Performance
Power Output
The Powerwall 3's 11.5kW peak output is industry-leading, making it excellent for running high-draw appliances during blackouts. Most Australian homes can run air conditioning, cooking appliances, and general loads simultaneously.
Backup Duration
With 13.5kWh of usable capacity, a single Powerwall can power an average Australian home for 8-12 hours during a blackout, depending on usage. Multiple units can be stacked for extended backup.
Efficiency
The 90% round-trip efficiency means you'll get back 90% of the energy you put in. This is competitive with other premium batteries like the BYD and Sungrow.
App Experience
Tesla's app remains best-in-class. Real-time monitoring, Storm Watch alerts, and time-based control for tariff optimisation are all included. The energy flow visualisation is particularly well-designed.
Who Should Buy the Powerwall?
Best For
- Tesla EV owners wanting ecosystem integration
- Homes needing high backup power
- Those who value app experience
- Premium buyers wanting proven reliability
Consider Alternatives If
- You're on a tight budget (consider BYD)
- You need specific inverter compatibility
- You want faster installation availability
How It Compares
| Feature | Tesla Powerwall 3 | BYD Battery-Box | Sungrow SBR |
|---|---|---|---|
| Capacity | 13.5 kWh | 10.2-12.8 kWh | 9.6-25.6 kWh |
| Price | $15,000-$17,000 | $8,500-$14,000 | $7,500-$10,500 |
| Peak Power | 11.5 kW | 5.1 kW | 6.6 kW |
| Warranty | 10 years | 10 years | 10 years |
Tesla Powerwall 3
BYD Battery-Box
Sungrow SBR
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