Powerwall 3 Expansion Pack

More Storage. More Savings. More Backup.

Powerwall 3 Expansion Pack

Add a Powerwall 3 Expansion Pack, for extra storage at a fraction of the cost of a second battery system with the Federal Government battery rebate.

What’s Included:

1 × Tesla Powerwall 3 Expansion Pack
Professional installation by SunStak’s certified team
Wall or floor mounting kit
Integration with your existing Tesla system
10-Year Tesla Warranty
Rebate application support

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Battery Rebates Now Available

We will handle your rebates and compliance matters with the utmost professionalism and attention to detail.

Federal Government’s Battery Rebate Program (pending) provides around $330 per kWh for eligible households installing new battery storage capacity, including expansions.

✅ Rebates apply to new capacity added to existing systems

New South Wales, the Peak Demand Reduction Scheme (PDRS) can unlock even more savings, further lowering your total out-of-pocket cost. This scheme applies to homes with no battery.

✅ Funding is reduced every year. Secure your rebate before it’s gone

How Much Rebates?

Each Powerwall 3 unit can support up to three expansion packs. Here’s what your system could look like with the federal government battery rebate:

  
    
        Expansion Packs
        Pack Capacity
        Total Capacity
        Rebate Calculation
        Total Federal Rebate
      

    
        1 Expansion Pack
        13.5 kWh
        27.0 kWh
        13.5 × $330
        $4,455
      

        2 Expansion Packs
        27.0 kWh
        40.5 kWh
        27 × $330
        $8,910
      

        3 Expansion Packs
        40.5 kWh
        54.0 kWh
        40.5 × $330
        $13,365
      

  

Why Choose a Powerwall 3 Expansion?

More Storage, Less Spend: 13.5 kWh of additional energy—same as a full Powerwall 3, minus the extra inverter.
Simple Add-On: Designed specifically for existing Powerwall 3 systems.
Modular & Scalable: Add up to 3 expansion units per Powerwall 3.
Fast Installation: No major rewiring—install in hours, not days.
Tesla App Integration: Monitor all storage from the one app.
Compact Design: Stackable and wall-mountable to suit your space.

Note: The approval from the Clean Energy Council (CEC) is still pending; however, we anticipate that it will be granted shortly.

Tesla App

Control It All in One App

Once installed, your expansion pack is fully integrated with your Tesla Mobile App—so you’ll see one system, one performance graph, and one clear picture of your home energy.

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