{"id":86159,"date":"2024-08-20T11:42:33","date_gmt":"2024-08-20T02:12:33","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=86159"},"modified":"2025-07-19T17:42:59","modified_gmt":"2025-07-19T08:12:59","slug":"powerwall-3-when-it-makes-sense","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/powerwall-3-when-it-makes-sense\/","title":{"rendered":"Powerwall 3: When It Makes Sense and When It Doesn’t"},"content":{"rendered":"

\"is<\/p>\n

Tesla’s Powerwall 3 has just launched in Australia and caused quite a stir. But is it the right choice for every Aussie household that wants a home battery?<\/p>\n

I’m here to cut through the hype and give you the lowdown on when the Powerwall 3 shines and when you should look elsewhere.<\/p>\n

The Powerwall 3’s Star Features<\/h2>\n

Here’s what makes the Powerwall 3 stand out compared to the Powerwall 2:<\/p>\n

    \n
  1. Integrated 10kW solar hybrid inverter1<\/a><\/sup>.<\/li>\n
  2. Impressive 11 kW power output from the battery.<\/li>\n
  3. High surge current means it can kick-start the gruntiest of machines when the grid goes down.<\/li>\n
  4. The promise of easy-to-add, good-value energy expansion packs.<\/li>\n
  5. $1,500 more expensive than Powerwall 2 for the same storage (13.5 kWh).<\/li>\n<\/ol>\n

    When Powerwall 3 Makes Sense<\/h2>\n
      \n
    1. Starting from scratch:<\/strong> If your roof is a blank canvas or your existing system is ready for retirement, the Powerwall 3 could be a great choice. It’s designed to handle up to 20kW of solar panels, enough to cover most Aussie roofs. The integrated inverter means a quicker, cleaner installation, plus the powerful output gives you more options for what you choose to back up, and increases earnings if you join a VPP. Adding kWhs in the future should be easy, too.<\/li>\n<\/ol>\n

      When Powerwall 3 Might Make Sense<\/h2>\n
        \n
      1. Upgrading a small solar system:<\/strong> Do you have an existing solar setup with a 5kW or smaller inverter? Tesla Australia promises the Powerwall 3 will play nice with your current solar array by “AC-coupling up to 5kW of solar.” However, a word of caution: this integration is still new territory in Australia, and Tesla’s promises don’t always come true. Sensible homeowners will let someone else be the first to try adding a PW3 to existing small solar. But if you are brave enough to go first, please let me know how you go!<\/li>\n
      2. You already have big solar:<\/strong> If you already have a decent (>6.6kW) solar system, then the Powerwall 3 is not designed to integrate with your solar inverter. It may be possible to disconnect the solar array from your old inverter and reconnect into the PW3, but not without risking regulatory, technical and warranty issues. I’d recommend leaving your solar alone, and retrofitting a battery system designed for AC-coupling.<\/li>\n
      3. On One Phase Of \u00a0A Three-Phase Home:<\/strong> You can use a Powerwall 3 on one phase of a three-phase home<\/a>, but it comes with limitations. You can only back up the phase the PW3 is on, and your solar won’t work during grid outages if you have a 3-phase solar inverter.<\/li>\n<\/ol>\n

        When Powerwall 3 Does Not Make Sense<\/h2>\n
          \n
        1. On All 3 Phases Of A 3 Phase Home:<\/strong>\u00a0 Although you can add a Powerwall 3 to each phase of a 3 phase home if you really want to, it’s a very expensive solution that won’t work very well if you have any 3 phase loads or a 3 phase solar inverter. Just get a proper 3 phase battery, like Sigenergy, Sungrow or Fronius\/BYD.<\/li>\n
        2. Enphase or SolarEdge Fans:<\/strong> If you’re committed to Enphase or SolarEdge systems, especially for complex roofs with more than three orientations, the Powerwall 3 isn’t for you. It’s not designed to interface seamlessly with panel-level optimisation, whether microinverters or SolarEdge.<\/li>\n
        3. Off-Gridders:<\/strong> Do you live off-grid, or are you planning to? The Powerwall 3 isn’t designed or supported for off-grid living. Stick to systems specifically designed for off-grid use, designed by an off-grid expert.<\/li>\n
        4. Expanding a Powerwall 2 System:<\/strong> If you’re already rocking a Powerwall 2, stick with what you know. Adding another Powerwall 2 is a much smoother option than trying to integrate a Powerwall 3. I have a Powerwall 2<\/a>, and the PW3 launch has prompted me to buy a second while they’re still available.<\/li>\n
        5. You loathe Elon:<\/strong> Let’s face it – an increasing number of Aussies have strong negative feelings about Elon Musk and the company he leads. If that’s you, rest assured there are plenty of excellent alternatives from brands like Sigenergy<\/a>, Fronius\/BYD<\/a>, and Sungrow<\/a>.<\/li>\n
        6. When you want Tigo optimisers: <\/strong>If your roof dictates a complex layout or has significant problems with, say a chimney creating hard line shade, then Powerwall 3 is not compatible with MLPE (Module Level Power Electronics).<\/li>\n<\/ol>\n

          The Bottom Line<\/h2>\n

          The Powerwall 3<\/a> is a brilliantly thought-through piece of tech. It’s hard to beat for new installations or significant upgrades on single-phase homes. However, in some scenarios, other batteries<\/a> will serve you better.<\/p>\n

          Remember, the key to a successful solar and battery setup is matching the technology to your home. Don’t get caught up in the hype of having the latest model if it means trying to install a square peg in a round hole.<\/p>\n

          This post was updated on 29th August to give 2 separate 3-phase scenarios, because there are so many proper 3 phase battery systems available these days and PW3 is not one of them.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

          Tesla’s Powerwall 3 has just launched in Australia and caused quite a stir. But is it the right choice for every Aussie household that wants a home battery?<\/p>\n","protected":false},"author":1,"featured_media":86171,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[551],"tags":[],"class_list":["post-86159","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-battery-storage","entry"],"acf":[],"yoast_head":"\nPowerwall 3: When It Makes Sense and When It Doesn't<\/title>\n<meta name=\"description\" content=\"Tesla\u2019s Powerwall 3 is here, but is it right for every Aussie home? 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I started SolarQuotes in 2009 and the SolarQuotes blog in 2013 with the belief that it\u2019s more important to be truthful and objective than popular. My last \"real job\" was working for the CSIRO in their renewable energy division. Since 2009, I\u2019ve helped over 800,000 Aussies get quotes for solar from installers I trust. Read my full bio.","sameAs":["https:\/\/www.solarquotes.com.au\/","https:\/\/x.com\/FinnPeacock"],"url":"https:\/\/www.solarquotes.com.au\/blog\/author\/admin\/"}]}},"jetpack_featured_media_url":"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/08\/powerwall3-or-not.jpg","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2FF2s-mpF","jetpack-related-posts":[{"id":81719,"url":"https:\/\/www.solarquotes.com.au\/blog\/powerwall-3-australia-latest\/","url_meta":{"origin":86159,"position":0},"title":"Powerwall 3: What To Expect When It Arrives In Australia","author":"Finn Peacock","date":"February 22, 2024","format":false,"excerpt":"Update: 16 August 2024 -Tesla Australia have launched the Powerwall 3 - read all about the launch here. Price: $13,600 including Gateway (Battery: $11,900, Gateway $1,700) That's $1,500 more than the PW2, but you are getting an integrated hybrid solar inverter configurable as either 5kW or 10kW. Separately that would\u2026","rel":"","context":"In "Battery Storage"","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"powerwall 3 and possum","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/02\/powerwall3-possum-magic.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/02\/powerwall3-possum-magic.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/02\/powerwall3-possum-magic.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/02\/powerwall3-possum-magic.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/02\/powerwall3-possum-magic.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":86817,"url":"https:\/\/www.solarquotes.com.au\/blog\/three-phase-powerwall-3\/","url_meta":{"origin":86159,"position":1},"title":"Can You Install The Powerwall 3 On A Three-Phase Home?","author":"Finn Peacock","date":"September 26, 2024","format":false,"excerpt":"Australians sure are excited about the Tesla Powerwall 3, and we are getting truckloads of queries about it. The most common question by far is: Can I put a Powerwall 3 on my 3-phase home? The short answer is: Yes. Although the Powerwall 3 is a single-phase battery, it will\u2026","rel":"","context":"In "Battery Storage"","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"Powerwall 3 and 3 phase explained","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/09\/3-phase-powerwall3.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/09\/3-phase-powerwall3.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/09\/3-phase-powerwall3.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/09\/3-phase-powerwall3.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/09\/3-phase-powerwall3.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":5311,"url":"https:\/\/www.solarquotes.com.au\/blog\/powerwall-alternatives\/","url_meta":{"origin":86159,"position":2},"title":"Powerwall Alternatives That You Should Consider as Tesla Battery Hype Reaches Fever Pitch","author":"Finn Peacock","date":"February 4, 2016","format":false,"excerpt":"Manufacturers of Powerwall alternatives\u00a0struggled to be heard last week as the mainstream media went crazy over the beautifully stage managed,\u00a0first residential Powerwall battery storage installation in Australia.\u00a0 The mood was one of expectation and excitement \u2014 mixed with a tinge of dread in fossil fuel circles - as it heralded\u2026","rel":"","context":"In "Battery Storage"","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"powerwall alternatives","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2016\/02\/2016-02-04_17-17-49.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2016\/02\/2016-02-04_17-17-49.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2016\/02\/2016-02-04_17-17-49.jpeg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":82856,"url":"https:\/\/www.solarquotes.com.au\/blog\/tesla-confirms-key-powerwall-3-specs\/","url_meta":{"origin":86159,"position":3},"title":"Tesla Confirms Key Powerwall 3 Specs","author":"Finn Peacock","date":"April 11, 2024","format":false,"excerpt":"A presentation by a Tesla USA employee, now circulating on YouTube, has provided substantial new information on the Powerwall 3's confirmed specs. My February summary of the Powerwall 3's expected specs contained several 'to be confirmed' speculations. This blog post confirms that every speculation, besides the cell chemistry, was correct.\u2026","rel":"","context":"In "Battery Storage"","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"powerwall 3","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/04\/pw3-features-confirmed.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/04\/pw3-features-confirmed.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/04\/pw3-features-confirmed.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/04\/pw3-features-confirmed.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/04\/pw3-features-confirmed.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":10098,"url":"https:\/\/www.solarquotes.com.au\/blog\/powerwall-2-as4777\/","url_meta":{"origin":86159,"position":4},"title":"Will it be illegal to install a single phase Powerwall 2 from Thursday?","author":"Finn Peacock","date":"March 26, 2017","format":false,"excerpt":"Unless your local electricity network provides a local variation to a new Australian Standard that becomes mandatory\u00a0on Thursday, it may\u00a0be illegal to install a Powerwall 2 plus\u00a0solar on a single phase. [Note: Someone has contacted me to say that their interpretation of the standard is that a 5kW battery inverter\u2026","rel":"","context":"In "Battery Storage"","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2017\/03\/2017-03-26_17-09-58.png?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2017\/03\/2017-03-26_17-09-58.png?resize=350%2C200 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2017\/03\/2017-03-26_17-09-58.png?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2017\/03\/2017-03-26_17-09-58.png?resize=700%2C400 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2017\/03\/2017-03-26_17-09-58.png?resize=1050%2C600 3x"},"classes":[]},{"id":86052,"url":"https:\/\/www.solarquotes.com.au\/blog\/powerwall-3-launch\/","url_meta":{"origin":86159,"position":5},"title":"Australian Powerwall 3 Unwrapped: More Juice, More Dollars, More Questions","author":"Neerav Bhatt","date":"August 17, 2024","format":false,"excerpt":"Tesla just held a detailed media and installer briefing about the new Tesla Powerwall 3 (PW3) in Sydney, and I was there for SolarQuotes to make sure I got answers to key technical questions no one else is likely to ask... Look closely at the Australian version of Tesla's Powerwall\u2026","rel":"","context":"In "Battery Storage"","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"powerwall 3 launch signage","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/08\/powerwall3-launch.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/08\/powerwall3-launch.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/08\/powerwall3-launch.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/08\/powerwall3-launch.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/08\/powerwall3-launch.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/86159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/comments?post=86159"}],"version-history":[{"count":17,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/86159\/revisions"}],"predecessor-version":[{"id":93305,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/86159\/revisions\/93305"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/media\/86171"}],"wp:attachment":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/media?parent=86159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/categories?post=86159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/tags?post=86159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}