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Tesla Powerwall Battery Solutions

Overview of the Tesla Powerwall System

Tesla is a globally recognised leader in clean energy innovation. The Tesla Powerwall series represents one of the most established residential solar battery storage solutions available in Australia. Designed for maximum performance, ease of use, and seamless integration with solar power systems, the Powerwall is a premium solution for many homeowners seeking energy independence.


The latest model, Tesla Powerwall 3, builds on the strengths of Powerwall 2 by offering higher power output, a built-in inverter, and simplified installation. Its intelligent design supports both on-grid and off-grid capabilities, offering peace of mind during a power outage and helping maximise the use of excess solar energy and solar self consumption.

Tesla Powerwall 1

Powerwall 1, released in 2015, was Tesla’s first home battery system and marked the company’s entry into residential energy storage. It featured a 6.4 kWh capacity and relied on DC coupling with solar systems. While no longer in production, it laid the groundwork for subsequent Powerwall iterations.

Key details:

  • Capacity: 6.4 kWh
  • Chemistry: Lithium NMC
  • DC Coupling required
  • Lacked integrated inverter
  • Ideal for early adopters using off-grid or hybrid setups
Tesla Powerwall 1
Tesla Powerwall 2

Tesla Powerwall 2

Powerwall 2, launched in 2016, dramatically improved on its predecessor with more storage capacity and built-in AC inverter functionality. With 13.5 kWh of usable storage and integrated installation capability, it became one of the most widely adopted home batteries globally.

Key features:

  • 13.5 kWh capacity (same capacity as Powerwall 3)
  • 90% round-trip efficiency
  • Integrated inverter for AC coupling
  • Scalable with up to 10 multiple units
  • Compatible with most solar systems

Its broad compatibility and simplified setup made it suitable for both new solar installations and retrofits, making it a popular choice for many Australian homeowners.

Tesla Powerwall 3

The latest generation, Powerwall 3, improves on storage and installation simplicity. With a built-in solar inverter and streamlined design, it reduces total system complexity and installation costs.

Highlights:

  • 13.5 kWh usable capacity
  • 11.5 kW continuous power, 20 kW peak
  • Built-in hybrid inverter
  • Ideal for new installations
  • Enhanced monitoring via Tesla app

It offers significant efficiency advantages for households installing a new solar + battery system, while also supporting essential appliances like fridges and lights during outages.

Tesla Powerwall 3

Saving Millions, Planting Billions

1

Rated Warranty

50,000

Tons CO2 Reduction

50,000,000

Generated In Savings

200,000,000

Trees Planted

Key Features and Technical Specifications

The Tesla Powerwall combines sleek aesthetics with robust performance. With 13.5 kWh of usable storage capacity per unit, Powerwall systems are scalable to suit various home energy needs (Powerwall 2 is scalable up to 135 kWh, while Powerwall 3 currently supports up to 3 units for a total of 40.5 kWh in residential installations).

Feature

Powerwall 2

Powerwall 3

Usable Capacity

13.5 kWh per unit

13.5 kWh per unit

Power Output

5 kW continuous, 7 kW peak

11.5 kW continuous, 20 kW peak

Chemistry

Lithium NMC

Lithium Iron Phosphate (LFP)

Depth of Discharge

100%

100%

Operating Temp

-20°C to 50°C

-20°C to 50°C

Round-trip Efficiency

90%

~97.5% (overall system efficiency)

Inverter

Included (AC coupled)

Included (hybrid)

Installation

Wall or floor mountable

Wall or floor mountable

Warranty

10 years

10 years 

The Powerwall 3 includes an integrated inverter, reducing equipment needs for new systems. Its all-in-one battery system supports faster setup and better control through the Tesla app, giving users insights into electricity use, energy usage, energy stored, and real-time data on energy storage systems.

 

Tesla Installation with Solar Galaxy

Solar Galaxy is an authorised Tesla Powerwall installer with SAA-accredited teams. Our service includes:

  • Site assessment and solar compatibility review

  • Tesla Powerwall installation and commissioning

  • Custom system design and load analysis

  • App setup and energy optimisation configuration

  • Compliance with Clean Energy Council standards

To maintain Solar Galaxy’s 1+9-year workmanship warranty, systems must be professionally serviced every two years, including panel cleaning. Customers must log service history for eligibility.

Comparing Tesla to Other Battery Brands

Feature

Tesla Powerwall 3

Sigenergy SigenStor

Sungrow SBR HV

Alpha ESS SMILE

Inverter Included

Yes

Yes

No

Optional

Backup Support

Yes

Yes (UPS-grade)

Yes

Yes

Capacity/Unit

13.5 kWh

5–48 kWh

9.6–25.6 kWh

5–30 kWh

Cycle Life

10,000+

10,000+

6,000

6,000

VPP-Ready

Yes

Yes

Yes

Yes


Compared to other brands, Tesla’s streamlined design, high efficiency, scalability with multiple Powerwall units, and integrated monitoring make it a high demand option for most households.

SOLAR AND BEYOND

Battery Brands

Compare Our Battery Brands

We offer a curated selection of leading battery brands known for their efficiency, safety features, smart controls, and long cycle life. These brands are compliant with Australian standards and eligible for government rebates.

FAQs About Tesla Powerwall

Learn more about our Battery Storage Options or compare with Sungrow Batteries.

Get in touch with Solar Galaxy today for a quote or to see if the Tesla Powerwall suits your home battery system needs.
Yes. Powerwall 2 allows up to 10 units; Powerwall 3 supports up to 3 units.

Yes, the Tesla Powerwall integrates seamlessly with most leading solar panel brands, making it a flexible choice for both new and existing solar setups. In addition, eligible homeowners may qualify for government solar battery rebates that help lower the upfront cost of installation and improve the overall return on investment. This combination of compatibility and financial support makes the Powerwall one of the most accessible and efficient home energy storage solutions in Australia.

Yes. Powerwall 2 is ideal for retrofits; Powerwall 3 is better for new installs.

Yes, the Tesla Powerwall is designed for broad compatibility with a range of leading solar inverter brands. This flexibility allows homeowners to integrate the Powerwall into both new and existing solar installations, ensuring efficient energy conversion, smart monitoring, and seamless system performance across various inverter technologies.

Powerwall 3 uses lithium iron phosphate (LFP); earlier models used lithium NMC.
Yes. It enables automatic switching and uninterrupted stored power delivery.

Pricing

6.6kw
Perfect for smaller homes
From $50 / month
Up-to
$
2000
Savings
  • Tier-1 N-Type High Performance Panels
  • Lifetime support included!
  • Battery and EV compatible for future upgrades!
  • Free Monitoring to track your savings!
  • Fast-track installation
Unlock Savings Now
13.2kw Solar
Best for mid-sized homes
From $75 / month
Up-to
$
4000
Savings
  • Tier-1 N-Type High Performance Panels
  • Lifetime support included!
  • Battery and EV compatible for future upgrades!
  • Free Monitoring to track your savings!
  • Fast-track installation
Unlock Savings Now
15kW +
Ideal for energy-hungry homes
From $90 / month
Up-to
$
5000+
Savings
  • Tier-1 N-Type High Performance Panels
  • Lifetime support included!
  • Battery and EV compatible for future upgrades!
  • Free Monitoring to track your savings!
  • Fast-track installation
Unlock Savings Now