Tesla Powerwall 3
The Ultimate Home Battery System For Australian Homes & Businesses
Since launching the original Powerwall in 2015, Tesla has been at the forefront of home battery innovation, helping homeowners store excess solar energy, reduce electricity costs, and gain greater energy independence.Building on the success of the Powerwall and Powerwall 2, the Tesla Powerwall 3 introduces a major leap forward with an integrated solar inverter, higher continuous power output, improved backup capabilities, and support for expansion packs that allow storage to grow as your energy needs increase.
Designed to work seamlessly with solar systems, the Powerwall 3 offers intelligent energy management through the Tesla app, giving homeowners greater control over their energy usage while providing reliable backup during grid outages.
As a Tesla Certified Installer, Austar Solar delivers professional Powerwall 3 installation across NSW, helping homeowners maximise solar savings, reduce energy bills, and enjoy reliable backup power with a system tailored to their needs.
Tesla currently has only 1 Battery storage model available in Australia
- Tesla Powerwall 3
Tesla Powerwall 13.5kWh with built-in 11.04 kW Inverter Package Starting From $12,799*
Tesla Battery Storage Packages
13.5kWh
Battery + 11.04 kWh inbuilt Inverter
- Ideal for small to medium homes & spaces
- Save up to 70% on your electricity bills
- Government rebates & incentives available
27kWh
Battery + 12 kWh Hybrid Inverter
- Perfect for medium to large homes & spaces
- Maximize solar use with up to 90% independence.
- Provides reliable backup power during outages
Tesla Battery Series
Designed for homes, businesses, and large‑scale solar farms
Tesla Powerwall 3
Tesla Powerwall 3 EXT
Tesla Powerwall 3
Tesla Powerwall 3 is Tesla’s latest home battery solution, designed for Australian households looking to maximise solar energy, reduce electricity bills, and gain reliable backup power. Not sure if Powerwall 3 is right for you? [compare Powerwall 3 vs Anker Solix X1] to see how Australia’s two most popular premium batteries stack up on price, power, and features. Featuring an integrated solar inverter, higher power output, and advanced lithium-ion battery technology, Powerwall 3 delivers efficient energy storage and seamless performance in Australia’s demanding climate. With smart energy management via the Tesla app, robust safety features, and compatibility with new or existing solar systems, Tesla Powerwall 3 offers a future-ready solution for homes seeking energy independence and long-term savings.
Tesla Powerwall 3 EXT
The Tesla Powerwall 3 Expansion (EXT) Pack is designed to increase your home’s battery storage capacity without adding another inverter. Each EXT Pack provides an additional 13.5 kWh of usable storage and works alongside a Tesla Powerwall 3, allowing homeowners to scale their energy storage as their needs grow. It’s an ideal solution for larger homes, higher energy consumption, or households looking to maximise solar self-consumption, extend backup power during outages, and reduce reliance on the electricity grid.
Tesla Powerwall 3 Specifications
The most advanced home battery system with integrated solar inverter technology
13.5 kWh
Usable Energy Capacity
11.5 kW
Peak Power Output
97.5%
Round-Trip Efficiency
10 Years
Comprehensive Warranty
Core technical features of Tesla Powerwall 3:
The Tesla Powerwall 3 is a fully integrated DC-coupled solar and battery system that serves as an all-in-one solution for residential energy storage and backup. Below are the core technical features that define the system:
1. Advanced Integrated Architecture
- Integrated Hybrid Inverter: Features an on-board solar inverter that supports up to 20 kW DC of solar input, eliminating the need for a separate inverter. Solar Connection: As a DC-coupled system, solar panels connect directly to the unit, achieving a solar-to-grid efficiency of 97.5%.
- Seamless Scalability: The system is modular, allowing up to three Expansion units to be added to reach a total energy capacity.
2. Safety & Environmental Protection
- Enhanced Fire Safety: Utilises Lithium Iron Phosphate (LFP) cell technology, which offers water submersion and thermal stability and safety compared to standard lithium-ion chemistries.
- Ruggedised Design: Features an IP67 rating for the battery and power electronics, making it dust-tight and resistant to temporary submersion in wet weather. Weather Resilience: Specifically, engineers in Australian climates with an operating temperature range of -20°C to 50°C.
3. Smart Energy Management
- Massive Load Support: Boasts a 185A Locked Rotor Amp (LRA) capability, allowing a single unit to start heavy loads like large ducted air conditioners or pool pumps.
- Whole-Home Backup: When paired with the Backup Gateway 2, the system provides automatic backup power during grid outages, keeping essential appliances running.
- Unified Monitoring: Fully managed via the Tesla app, providing real-time visibility into energy production, storage status, and home usage.
Technical Overview – Tesla Powerwall 3
The table below summarises the technical overview of the Tesla Powerwall 3 Battery storage system offered in Australia.
Feature | Tesla Powerwall 3 (Integrated) |
System Compatibility | Single-phase Residential |
Nominal Grid Voltage | 230 VAC |
Total Battery Energy | 14 kWh AC |
Usable Battery Energy | 13.5 kWh AC |
Nominal Output Power | 11.04 kW / 10 kW / 5 kW (Configurable) |
Load Start Capability | 185 A Locked Rotor Amps (LRA) |
Solar to Grid Efficiency | 97.5% |
Solar to Battery to Grid Efficiency | 89% |
Weight | 130 kg |
Dimensions (H x W x D) | 1105 x 609 x 193 mm |
Ingress Rating | IP67 (Battery & Electronics) / IP55 (Wiring) |
Warranty | 10 Years |
Tesla Powerwall 3 vs Powerwall 2 — What Changed?
Tesla no longer sells the Powerwall 2 in Australia. However, many homeowners researching home batteries still compare the two generations. Here is how the Powerwall 3 improves on its predecessor across every key metric.
Feature | Powerwall 2 | Powerwall 3 |
Usable Capacity | 13.5 kWh | 13.5 kWh |
Continuous Power Output | 5 kW | 11.5 kW |
Built-in Solar Inverter | No | Yes (up to 20 kW DC) |
MPPT Inputs | 0 | 6 |
Battery Chemistry | NMC Lithium-ion | LFP (Lithium Iron Phosphate) |
Integrated Gateway | No (separate device) | Yes (built-in) |
Expansion Pack Support | No | Yes (up to 3 packs) |
IP Rating | IP56 | IP67 |
Weight | 114 kg | 130 kg |
Warranty | 10 Years | 10 Years |
The Powerwall 3 is not just an incremental update — the integrated inverter alone removes the need for a separate $2,000–$4,000 solar inverter, making the all-in price comparison far closer than the unit price suggests.
Advanced Features of Tesla Powerwall 3
Engineered for maximum performance and seamless integration
Performance & Efficiency
The Tesla Powerwall 3 offers a range of advanced, officially verified features designed to maximise efficiency, safety, and flexibility for Australian homes. Key highlights include:
- Built-in Hybrid Inverter: 6 MPPTs support up to 20 kW of solar without a separate inverter.
- High Power Output: Runs large appliances with more than double the power of Powerwall 2.
- Expandable Design: Add up to 3 expansion units (13.5 kWh each) without extra electronics.
- LFP Battery Cells: Safer, longer-lasting Lithium Iron Phosphate chemistry.
- All-Weather Durable: Operates from -20°C to 50°C and is flood-resistant up to 0.6 m.
- Tesla App Control: Manage backup, enable Storm Watch, and join VPP programs easily.
Professional Installation Process
As certified Tesla installers, we ensure a seamless installation experience
Site Assessment
We evaluate your home’s energy needs and electrical system to design the optimal Powerwall setup.
System Design
Our engineers create a custom installation plan for your Powerwall 3 and solar integration.
Professional Installation
Certified technicians install your Powerwall system with minimal disruption to your home.
Activation & Monitoring
We activate your system and set up the Tesla app for real-time monitoring and control.
Why choose Tesla battery storage in Australia?
Choosing Tesla battery storage in Australia is a strategic move for homeowners looking to combat rising energy prices and extreme weather. As of early 2026, the Tesla Powerwall 3 has become the primary choice due to its high power output and integrated technology.If you are weighing up your options, read our detailed [Tesla Powerwall 3 vs Sungrow battery] comparison to understand which system better suits your home’s energy profile and budget.
Here is a summary of the top reasons to choose Tesla for your Australian home:
1. Energy Independence & Cost Savings
Peak Shaving: Automatically use stored energy during “Peak” periods (when Australian retailers charge the most) and recharge during “Off-Peak” or via your solar panels.
Massive Power Output: The Powerwall 3 delivers 11.5 kW of continuous power, double that of the Powerwall 2. This means you can run power-hungry Australian essentials like ducted air conditioning and pool pumps entirely off-battery.
2. Advanced Backup Protection
Storm Watch: Tesla’s software tracks the Bureau of Meteorology. If a severe storm is forecasted, the battery automatically prioritizes a full charge to ensure you have maximum backup if the grid fails.
Seamless Transition: In the event of a blackout, the Powerwall detects the outage and restores power to your home faster than a standard generator—often so quickly you won’t even notice the lights flicker.
3. Financial Incentives (2026)
Tesla Rebate: Tesla Powerwall 3 installations in Australia may be eligible for government rebates and incentives including STCs and the NSW Peak Demand Reduction Scheme (PDRS). Contact Austar Solar for the latest available incentives in your area
STC Incentives: You can still claim federal Small-scale Technology Certificates (STCs), which can reduce the upfront cost by roughly $1,500 – $2,500.
VPP Participation: Join the Tesla Virtual Power Plant (VPP) to earn credits on your electricity bill by allowing the grid to briefly use your stored energy during emergencies.
4. Built for the Australian Climate
Thermal Management: The Powerwall 3 features a redesigned cooling system that handles Australia’s extreme heat (up to 50°C) more effectively than many competitors.
LFP Safety: The new Lithium Iron Phosphate (LFP) chemistry is cobalt-free, offering a longer lifespan and higher safety rating against overheating.
Benefits Of Using Tesla Powerwall 3 Battery in Australia
- Maximise Solar Self-Consumption: Store excess solar energy generated during the day and use it at night or during peak tariff periods to reduce electricity bills.
Reliable Backup Power: Keep your essential appliances running during blackouts or grid outages with seamless automatic backup support.
Integrated Inverter Design: Simplified installation and improved energy conversion efficiency thanks to an all-in-one battery + inverter system.
Smart Energy Management: Monitor and control your energy usage in real time with the intuitive Tesla app, tailored for Australian energy needs.
High Power Output: Supports greater load capacity for Australian homes, ideal for powering appliances and household systems when solar isn’t producing.
Durable and Climate-Ready: Built to withstand Australia’s varied climates — from coastal humidity to inland heat — with robust safety and performance standards.
Scalable for Growing Needs: Add multiple Powerwalls to expand storage capacity as your household energy demands increase.
Long-Term Savings: Reduce reliance on the grid and take advantage of time-of-use tariffs to lower overall energy costs.
Supports Sustainability Goals: Decrease your carbon footprint by pairing with solar and storing clean, renewable energy for use when you need it.
Conclusion
Tesla Powerwall 3 is a powerful and future-ready battery storage solution for Australian homes seeking greater energy independence, lower electricity bills, and reliable backup power. With its integrated inverter, high performance output, smart energy management, and durability for Australian conditions, Powerwall 3 pairs seamlessly with solar systems to deliver long-term value and sustainability. For homeowners looking to protect against rising energy costs and grid outages while maximising clean energy use, Tesla Powerwall 3 stands out as a smart and dependable choice in Australia.
Tesla Powerwall 3 Home Battery FAQs
How much is a Tesla Powerwall 3 in Australia?
The Tesla Powerwall 3 starts from $12,799 fully installed in NSW and ACT through Austar Solar. This includes the unit (13.5 kWh usable capacity with built-in hybrid inverter), standard installation, and commissioning. Prices vary depending on your location, switchboard condition, and whether additional electrical work is required. Contact Austar Solar for a free itemised quote.
What is the difference between Tesla Powerwall 3 and Powerwall 2?
The Powerwall 3 is a major upgrade in four areas. First, it includes a built-in hybrid inverter, so you no longer need a separate solar inverter (saving $2,000–$4,000). Second, it delivers 11.5 kW continuous power output compared to 5 kW for the Powerwall 2, meaning it can run ducted air conditioning, pool pumps, and EV chargers simultaneously. Third, it uses safer LFP (Lithium Iron Phosphate) battery chemistry. Fourth, the Gateway is integrated into the unit itself, removing the need for a separate Gateway device. Storage capacity remains the same at 13.5 kWh per unit.
Does the Tesla Powerwall 3 have a built-in inverter?
Yes. The Tesla Powerwall 3 includes a fully integrated DC-coupled hybrid inverter supporting up to 20 kW of solar input across 6 MPPT inputs. This is one of its biggest advantages — you do not need to purchase or install a separate solar inverter. The all-in-one design simplifies installation, reduces points of failure, and achieves a solar-to-grid efficiency of 97.5%.
Is the Tesla Powerwall 3 worth it in Australia in 2026?
For most Australian households, yes. With electricity prices continuing to rise and solar feed-in tariffs declining, storing your own solar energy and using it at night delivers real savings. A typical NSW home with a 6.6 kW solar system and one Powerwall 3 can save $1,500–$3,000 per year on electricity bills. Add eligibility for NSW PDRS rebates, federal STCs, and VPP participation income, and most systems achieve payback within 5–8 years. The Powerwall 3’s 10-year warranty and LFP chemistry mean it will outlast the payback period comfortably.
How long will a Tesla Powerwall 3 power my house during a blackout?
It depends on your household’s energy consumption. With 13.5 kWh of usable capacity: a low-consumption home using 10–12 kWh per day will run for over 24 hours; an average Australian home using 20–25 kWh per day will run for 12–16 hours; a high-consumption home with ducted air conditioning and EV charging may deplete the battery in 6–8 hours. Adding a Powerwall 3 Expansion Pack doubles your backup duration. If solar panels are generating during the day, the system will recharge from the sun even during an extended outage.
Can the Tesla Powerwall 3 be used off-grid in Australia?
The Powerwall 3 can operate in island mode (off-grid), but it is primarily designed as a grid-connected system. For full off-grid operation in Australia, Tesla recommends pairing multiple Powerwall 3 units with sufficient solar generation to cover all seasons, including winter in southern states. Austar Solar can design a fully off-grid Powerwall 3 system for eligible properties in NSW and ACT — contact us to discuss your specific situation.
Is there a NSW rebate for the Tesla Powerwall 3?
Yes. Tesla Powerwall 3 installations in NSW can access two main incentive streams. The Peak Demand Reduction Scheme (PDRS) offers financial incentives for home battery systems that reduce peak grid demand — the Powerwall 3 qualifies. Additionally, when installed alongside a new solar system, federal Small-scale Technology Certificates (STCs) reduce your upfront cost by approximately $1,500–$2,500 depending on your location and system size. Austar Solar handles all rebate paperwork on your behalf.
How many solar panels do I need to charge a Tesla Powerwall 3?
To fully charge a Powerwall 3 (13.5 kWh) in a single average day of Australian sunshine, you need approximately a 5 kW–8 kW solar system. The most common residential system size in NSW — 6.6 kW — will comfortably charge the Powerwall 3 daily during spring, summer, and autumn. The Powerwall 3 supports up to 20 kW of solar input across 6 MPPT inputs, so larger systems are also fully supported. Austar Solar will size your solar and battery system together during your free consultation.
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