How Much Does The Tesla Powerwall 2 Cost?
Tesla Powerwall 2 Price Change History (excluding Gateway):
| Date | Wholesale Price | Change |
| 2017 | $9,000 | |
| 2018 – February | $9,600 | +$600 |
| 2018 – October | $12,250 | +$2,650 |
| 2019 – July | $11,700 | -$550 |
| 2020 – October | $12,500 | +$800 |
| 2021 – February | $13,300 | +$800 |
| 2021 – May | $12,750 | -$550 |
| 2022 – March | $13,700 | +950 |
| 2022 – May | $14,650 | +$950 |
| 2022 – October | $16,500 | +$1,850 |
| 2023 – February | $14,599 | -$1,901 |
| 2023 – April | $12,900 | -$1,699 |
| 2023 – June | $12,100 | -$800 |
| 2023 – August | $11,350 (after rebate) | -$750 |
| 2023 – November | $9,650 (after rebate) | -$1,700 |
| 2024 – January | $10,400 | +$750 |
| 2025 – February | $8,750 | – 1650 |
Tesla Powerwall 2 Discontinued? What It Means for Australian Homeowners
With the Tesla Powerwall 3 rollout, the Tesla Powerwall 2 is rumoured to be discontinued in Australia. While Tesla has not officially ended production, there has been indications that Tesla stock will become increasingly limited in 2025 as Tesla shifts focus to the newer model. If you are considering adding solar battery storage to your home, now may be the last opportunity to secure a Powerwall 2 before availability becomes scarce.
How Will the Discontinuation Affect Retrofitting?
One of the key benefits of the Powerwall 2 was its flexibility in retrofitting with existing solar systems. Unlike the Powerwall 3, which comes with a built-in inverter that may not be compatible with all solar setups, the Powerwall 2 works with a wide range of third-party inverters, making it the preferred choice for many homeowners with existing solar systems.
With the Powerwall 2 potentially being phased out, homeowners who want a plug-and-play battery solution that seamlessly integrates with their current solar inverter might want to act fast.
Is the Tesla Powerwall 2 Still Better Than the Powerwall 3?
While the Powerwall 3 introduces higher power output and an integrated inverter, it comes with limitations that could make the Powerwall 2 the better option for many Australians:
Pros
More Flexible for Existing Solar Systems – The Powerwall 2 supports AC-coupling, making it easy to retrofit with third-party solar inverters. The Powerwall 3 requires Tesla’s built-in inverter, limiting compatibility.
Proven Reliability – The Powerwall 2 has been on the market since 2017 and has undergone multiple optimizations. The Powerwall 3, while promising, remains untested long-term in Australian conditions.
More Scalable for Larger Homes – While both models allow multiple units to be stacked, the Powerwall 2’s compatibility with various inverters and setups gives homeowners more flexibility in system design.
Cons
Lower Power Output – The Powerwall 3 offers 11.5 kW peak output, compared to 7 kW for the Powerwall 2. If high instantaneous power draw is a priority, the Powerwall 3 may be preferable.
May Be Cheaper in the Long Run – Since the Powerwall 3 has a built-in solar inverter, it can eliminate the need for a separate inverter purchase, potentially reducing total system costs for new installations.
Should You Buy a Powerwall 2 Before It’s Gone?
If you have an existing solar system and need a reliable, proven, and retrofit-friendly battery, the Tesla Powerwall 2 remains one of the best options in Australia. However, with Tesla phasing out production, availability could become increasingly limited.
For those installing a brand-new solar and battery system, the Powerwall 3 may be a better choice due to its integrated inverter—but it remains untested in Australian homes.
The Chemistry of a Tesla Powerwall 2
Tesla Powerwall Backup Gateway
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Tesla Powerwall 2 Pros & Cons
Pros
- Depth Of Discharge (DoD): Excellent specifications including 100% DoD.
- Retrofit Capability: Easily integrates with third-party solar inverters, making it versatile for existing solar setups.
- Stackability: Allows for multiple units to be stacked together, ideal for users needing more than 13.5
Cons
- Expensive: One of the most expensive battery solutions on the market
- Not designed for 3-phase applications: as you can only connect the battery to one phase.
- No black start capability: The unit requires intervention if the battery goes flat and the mains supply isn’t available.
Tesla Powerwall 2 Performance Specifications
Tesla Powerwall 2 Warranty for Australian Customers
Tesla Mobile App Functionality
- Back-Up Only: The Back-Up Only feature is designed to store all available energy in the battery, ensuring that it remains fully charged. This feature helps to ensure uninterrupted power supply to the system during blackouts. If used with a Solar PV system of sufficient size, the battery can potentially last for weeks.
- Self-powered Mode: When using the Self-Powered mode, batteries are utilized to make the most of free energy generated from rooftops. This helps reduce energy bills by using energy from the grid only when necessary. Residential batteries help homeowners manage their evening and early morning power usage.
- Time-based Control: The Tesla Powerwall 2 has an intelligent feature that enables it to charge when electricity is cheaper, and discharge power when it’s more expensive, but only if the owner has a time-based electricity charge from their retailer. The financial benefit of this feature depends on the tariffs of the electricity retailer and is usually not enough to justify the cost of the battery system alone.
Is the Tesla Powerwall 2 Worth It?
How Do I Get a Tesla Powerwall Battery?
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Read About Home Battery Government Schemes Across Australia
FAQ
How much is a Tesla Powerwall 2?
Is it worth getting 2 Powerwalls?
What is the best solar battery in Australia?
Does Tesla Powerwall 2 need an inverter?
What is the capacity of a Tesla Powerwall 2?
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Reviews from Australians who have installed Tesla Batteries
So far I am excited with it and with all of the data that are at your fingertips I feel that it will pay for itself in 10 years at the price that electricity is at now. But if it reaches the 40-65% rise predicted over the next 10 years. Than it will be worth it.
Clearly the new Powerwall 3 LFP is the best on offer at present
The app makes it really easy to monitor your energy production and usage.
Performance so far has been brilliant. The app is so easy to use and fun as well.
Early days but battery seems to be performing well. Phone app can control most aspects of operation, and there are third party apps that can show details of power generation and distribution. Easy to charge on off-peak, discharge in peak times. Big forum on the web covering the unit.
Really great capacity. Hands off system with lots of good power management options
The new Tesla Powerwall 2 works very well and complements the existing Powerwall 2. The Tesla app provides real-time data on the performance of the solar-battery system. It has confirmed that the system worked well in line with expectations during the recent summer weather. The batteries hold sufficient energy for overnight domestic use, and on most days, the solar panels provide sufficient power to charge the batteries as well as operate the home electrics, including air conditioning, without using grid power. It will be interesting to see how well it works in winter.
The Tesla Powerwall 2 is an excellent product and has met all my expectations in saving my energy bill. Effective and simple to navigate through the mobile app to monitor the battery performance. Would definitely and highly recommend to others.
Tesla Powerwall 2 battery is great. I've not used grid power for 4 of the 5 weeks since it was installed. On those days where grid was used due to cloudy days it was minimal and in middle of the night. The Tesla app monitors energy flows pictorially and graphically and is expandable to more Powerwalls and Tesla EVs. You can easily set the amount of energy to hold in reserve in case of blackout and you can choose between self powered mode or time-based control based on your energy providers peak, shoulder and off-peak charges. These charges are entered into the app yourself as a once off task.
Yep, very good app. Stats & graphs are VG
This is my 2nd Powerwall 2 - the other has performed flawlessly over the past 4+ years and has no observed reduction in capacity or output
We're very happy with the battery, easy of use, ecosystem where everything is simple and just works. Didnt have any trips or failures, dropouts or need to reboot anything.
Both the Tesla Powerwall 2 batteries we have installed are great. You can easily monitor your usage and import/export rates.... Good app.
I an very satisfied with the app and the integration with my solar panels. The app added monitoring to the PV array as well.
So far so good the Tesla wall 3 only connected to my wife's latest Android phone for the initial setup but once setup it worked on my older one
The Tesla 2 was the best choice for our situation (in July 2020) - needed to be on the side of the house because there was no under cover location, wanted good blackout backup. It has been very reliable and we have had uninterrupted power during local blackouts. Not happy that Tesla 3 is not backward compatible, but we got another Tesla 2 that will definitely meet our future needs.
I can only comment on my own experience in saying that every other battery is playing catchup to Tesla. Remote access via app that syncs with Tesla vehicles = you're in complete control. I wish every other brand all the best but Tesla have been exceptional.
Easy to use and integrates well with my existing infrastructure
Review left 3 years after system installed
The grid has been less than reliable and by installing our Tesla Powerwall 2 this gives us confidence to act like a battery during normal operations and like a generator when the grid goes down. We have also taken advantage of the load-shifting capability which helps us to increase our return on investment.
We are able to run our house totally on solar and battery power
