First, let’s unpack the current cost in Australia
In 2025, a Tesla Powerwall 2 typically costs between $11,000 and $13,000 for supply and installation.
This includes:
- The battery unit
- A Tesla Gateway for monitoring and backup switching
- Installation by a licensed electrician
- Testing and compliance certification
Exact pricing depends on installation complexity, distance from switchboard, and site layout.
Compare Powerwall to other battery options
| Brand | Usable capacity | Typical installed cost | Warranty | Notes |
|---|---|---|---|---|
| Tesla Powerwall 2 | 13.5 kWh | $11,000–$13,000 | 10 years | High efficiency, integrated app |
| BYD HVM | 10–22 kWh (modular) | $9,000–$15,000 | 10 years | Expandable design |
| Sungrow SBR series | 9.6–25.6 kWh | $8,500–$14,000 | 10 years | Works with hybrid inverters |
| SolarEdge Energy Bank | 9.7 kWh | $9,000–$11,000 | 10 years | Integrated with SolarEdge systems |
Tesla offers a balance of reliability, brand reputation, and software integration.
Know what affects installation cost
- Distance to switchboard – longer cable runs increase labour and materials.
- Wall strength and mounting surface – may require brackets or reinforcements.
- Inverter type – hybrid or retrofit setup affects configuration time.
- Backup circuits – adding a backup supply adds cost.
- Network approval – certain areas require pre-approval or inspection.
Installations generally take 4–6 hours once site preparation is complete.
Review Powerwall specifications
| Specification | Value |
|---|---|
| Usable capacity | 13.5 kWh |
| Continuous power | 5 kW |
| Peak power | 7 kW (10 seconds) |
| Round-trip efficiency | ~90% |
| Operating temperature | –20°C to +50°C |
| Dimensions | 1150 × 755 × 155 mm |
| Weight | 114 kg |
| Warranty | 10 years (70% retained capacity) |
Each unit can be wall or floor-mounted and installed indoors or outdoors.
See how many Powerwalls your home needs
| Household type | Average daily use | Recommended setup |
|---|---|---|
| Small home | 8–12 kWh | 1 Powerwall |
| Standard 3-bed home | 15–20 kWh | 1 Powerwall |
| Large family or EV user | 25–35 kWh | 2 Powerwalls |
| Off-grid or high demand | 35 kWh + | 2–3 Powerwalls |
Each Powerwall is stackable, allowing scalable energy storage up to 10 units.
Understand the value over time
A Powerwall can save around $1,200–$2,000 per year depending on energy usage and tariff rates.
Most systems achieve a payback period of 6–9 years, faster when combined with solar self-consumption and time-of-use tariffs.
Choose professional installation
EV Charger Installation must be completed by an authorised Tesla Certified Installer to maintain warranty and system performance.
Correct setup ensures compliance with AS/NZS 5139 battery safety standards and local distributor regulations.
Get a quote from NWE Group
NWE Group is an approved installer for Tesla and other high-performance energy storage systems.
We provide full design, installation, and after-sales support across NSW and Queensland.
Request a site assessment or Powerwall quote at nwegroup.com.au.
Key takeaway
A Tesla Powerwall 2 in Australia costs roughly $11,000–$13,000 installed, offering 13.5 kWh usable capacity and 10-year warranty.
It suits homes with 6–10 kW solar systems and provides a reliable, long-term way to maximise solar savings and backup power.