Tesla solar batteries reviews

Based on 81 ratings Aus Ranking

  • 5 star 75
  • 4 star 5
  • 3 star 1
  • 2 star 0
  • 1 star 0

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About Tesla, Solar Batteries

Tesla solar batteries review

Tesla, Inc. was founded in 2003, originally as Tesla Motors. Tesla is headquartered in the USA's San Francisco Bay Area, with office locations around the world (including Australia).

After cutting its teeth on electric vehicle development, Tesla then expanded into commercial and home battery storage. The company arrived on the home energy storage scene accompanied by great fanfare with the Tesla Powerwall battery back in 2015, which was followed by the Powerwall 2 in 2016.

Tesla has grown into a huge company in terms of market capitalisation - a whopping USD $143.6 *billion* as at late January 2020. 

Anyway, back to batteries - the following are some basic specifications of the Powerwall 2:

  • Usable Capacity: 13.5 kWh
  • Power: 7kW peak / 5kW continuous
  • Dimensions: 1150 mm L x 753 mm W x 147 mm D
  • Weight: 114 kg
  • Warranty 10 years

The Powerwall is produced in the Tesla Gigafactory in Nevada USA, which also manufactures Tesla Model 3 electric motoers and the company's commercial/utility storage solution, the Powerpack.

Pricing And Supply

Supply of the Powerwall 2 was an issue for quite a while in Australia, and then there was a major price rise in 2018 - followed by a not so major price decrease in 2019. So, Australians have had it a little rough with the Powerwall, but its high profile through extensive media attention have seen plenty installed here and interest remains strong.

The cost of Powerwall 2 per warranted kilowatt hour (see below for notes on warranty) is around 31 cents - not the cheapest, but far from the most expensive of the systems we have listed on our battery comparison table.

Blackout Capabilities

The Tesla Powerwall 2 is an AC Coupled battery that comes with the necessary hardware (Tesla Gateway) to provide blackout protection, backup and off grid functions.

Powerwall's "Unlimited Cycles" Warranty

Tesla offers a 10 year "unlimited cycles" warranty, but this only applies to solar self-consumption and backup use. Any other application (such as participating in a Virtual Power Plant) or combination of applications sees the warranty cover drop to 3,200 cycles – about eight years’ worth if cycled once a day.

Reliability Testing Results

The Canberra Battery Test Centre has been putting the Powerwall 2 through reliability testing. The test battery arrived with a fault and later developed another that resulted in it being replaced.  Results published in September 2019 indicated capacity estimated at 96% after 640 full cycles.  If  maintained, the Powerwall 2 will stay well within the minimum capacity provided by its warranty.

While not perfect (and Tesla hasn't been overly fond of us pointing out issues), as far as home solar battery storage goes at this point in time the Tesla Powerwall 2 is probably a good choice among what is available.

Telsa is great at marketing, but how is the Powerwall viewed by those who have one installed? What about after sales service and support? We're inviting Australian Powerwall owners (whether they have the original or Powerwall 2 model) to leave their rating and review here.

Tesla Solar Battery Reviews

Bought From: Replenishable Energy Pty Ltd Show additional information
Bought From: Goliath Solar and Electrical Show additional information
Bought From: Natural Solar Show additional information
Bought From: Venergy Metro Show additional information
Bought From: Venergy Metro Show additional information
Bought From: All Green Environmental Solutions Sydney Show additional information
Bought From: Soltek Energy Show additional information
Bought From: DQ Electrical Pty Ltd Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: NRG Solar - National Renewable Group Show additional information
Bought From: Banana Solar Sydney Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: Sunwise Energy Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: Penrith Solar Centre Show additional information
Bought From: Solar4Life Show additional information
Bought From: DQ Electrical Pty Ltd Show additional information
Bought From: Adelaide SolarSafe Show additional information
Bought From: EnergySA Show additional information
Bought From: Adelaide SolarSafe Show additional information
Bought From: Solaworx Show additional information
Bought From: Natural Solar Show additional information
Bought From: Soltek Energy Show additional information
Bought From: Penrith Solar Centre Show additional information
Bought From: Penrith Solar Centre Show additional information
Bought From: G Store Show additional information
Bought From: Renewable Energy Australia Show additional information
Bought From: Penrith Solar Centre Show additional information
Bought From: Adelaide SolarSafe Show additional information
Bought From: Solaworx Show additional information
Bought From: Solar Power Direct Show additional information
Bought From: Replenishable Energy Pty Ltd Show additional information
Bought From: Class A Energy Solutions Show additional information
Monitoring application is so Cool.
Bought From: Venergy Metro
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Bought From: Class A Energy Solutions Show additional information
Bought From: Banana Solar Sydney Show additional information
What a great looking product.
Bought From: Venergy Metro
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Bought From: Natural Solar Show additional information
Extremely slim, weather proof and is working well. We can monitor its performance on thee Tesla App.
Bought From: Class A Energy Solutions
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Bought From: Class A Energy Solutions Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: Dan the Solar Man Angle Vale Show additional information
A magic piece of work!
Bought From: Dan the Solar Man Angle Vale
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Easily installed an Not in the way..
Bought From: Dan the Solar Man Angle Vale
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I wish I had two connected , I could use more air conditioners in my house of a night on 40c days.
Bought From: Dan the Solar Man Angle Vale
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Bought From: NRG Solar - National Renewable Group Show additional information
Bought From: Allstar Solar Show additional information
Battery works very well, love the app you can monitor how it is working.
Bought From: Sunbank Solar
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Bought From: Kozco Energy Group Show additional information
Bought From: Natural Solar Show additional information
The system hasn't missed a beat since being commissioned. We have not used power from the grid (apart from the 0.1Kwh daily use identified in the Tesla app - still need to investigate this apparent standing connection charge/amount) since the system was switched on. Now waiting for our first complete battery/solar quarterly electricity bill to identify savings and exact usage/feed-in from our supplier.
Bought From: Kozco Energy Group
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The Tesla battery has performed really well, I now just need to add additional PV panels. We only have 3.2 kW and need more for winter.
Bought From: Solaray Energy Pty Ltd
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After our own month-old analysis into the nature of our usage, it was the best decision we made due to the nature of our usage being split equally over solar hours versus non productive productive solar hours.

All suppliers recommended smaller installations minus battery backup to secure their sale. This would have made our pay back recovery period longer and lead to our questioning the success of the installation. We are mostly 100% covered on daily usage except when obviously bad weather changes our solar production. This includes the use of aircon and heating by day..
Bought From: Solaray Energy Pty Ltd
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Bought From: Kozco Energy Group Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: G Store Show additional information
It does the job - only 2 weeks in, so hard to say more than good...
Bought From: All Green Environmental Solutions
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Bought From: Kozco Energy Group Show additional information
Bought From: Bradford Solar Adelaide Show additional information
Bought From: Solaworx Show additional information
Bought From: QIS Solarwise Show additional information
Bought From: TCK Solar Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: Kozco Energy Group Show additional information
The tipping point arrived with combined rebates and discounts, so just had the battery installed this week, after assessing its relative merits for about 12 months.
Early days of course, but for our usage I believe the payback and peace of mind will be worth it. Day 1, 36 degrees, battery fully charged before midday, 98% self-sufficiency 20+kWh to the grid, ran the air-conditioning after dark for a couple of hours, happy days.

Day 2 19 degrees, cloudy raining, windy. battery fully charged just after midday, still 98% self sufficiency 7kWh to the the grid.

The litmus test will be how things go next winter.
Bought From: Kozco Energy Group
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Bought From: Helioenergy Show additional information
Bought From: Essential Energy Solutions Pty Ltd Show additional information
Bought From: Soltek Energy Show additional information
Bought From: Allstate Solar Show additional information
Bought From: Kozco Energy Group Show additional information
Performs well under load. Charges quickly.
Bought From: EcoSmart Energy Group
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Bought From: Rainbow Power Company Show additional information
Bought From: SAE Group Pottsville - Tweed Show additional information
Bought From: Gippsland Solar Show additional information
Bought From: Kozco Energy Group Show additional information
Bought From: Keen 2B Green Pty Ltd Show additional information
Bought From: Natural Solar Show additional information
Just installed
Bought From: SAE Group QLD
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Bought From: Kozco Energy Group Show additional information
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