[NSW] 50kWh Alpha ESS Battery & 5kW Inverter $4,999 Installed (Sydney Metro Only) @ VoltX Energy

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[NSW] 50kWh Alpha ESS Battery & 5kW Inverter $4,999 Installed (Sydney Metro Only) @ VoltX Energy
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AssociatedLVoltX Energy on 04/11/2025 - 20:35 voltxenergy.com.au (2702 clicks)
Last edited 06/11/2025 - 15:21

We're back with a new limited time deal for Ozbargain users.

We have 80 installation slots to fill in Sydney metro over the next 8 business days.

Please note: Actual installation must take place within the next 8 business days.

THE OFFER:

✅ Alpha ESS 50 kWh Battery + 5kW inverter
✅ Installed Price: $4,999 inc GST
✅ Add backup functionality for an extra $500 ($5,499 total).
✅ Professional installation by CEC-accredited installers
✅ Warranty: 10-year battery & inverter coverage
✅ Eligible area: Sydney Metro only, within this area:

Map Area

TO TAKE UP THE OFFER: (NEW) Secure Your Deal (Optional):

Secure Your Deal - $500 Refundable Deposit

We’ve been absolutely inundated with OzBargain enquiries from this post and our team simply can’t respond fast enough to everyone.
To make it fair for those who are ready to go ahead, we’ve created a way to secure your installation slot instantly.
To guarantee your $4,999 installation price and lock in one of the limited 80 slots, you can leave a fully refundable $500 deposit through our secure VoltX Energy payment link above. This confirms your commitment and reserves your special price immediately.
If for any reason you change your mind or we’re unable to complete the installation, your $500 deposit is 100% refundable, no questions asked.

Once you submit the payment, it would fast-track things if you also submit this form, which gives us more details.

Click here to submit the form

(If you’ve already submitted the form, you can optionally pay the deposit above to secure your slot.)

⚡ Limited to 80 install slots (10 per working day for the next 8 business days)
⚡ Install must be completed within this period to qualify for the $4,999 price.
⚡ After these slots are filled, standard pricing applies.

📅 Available until slots filled or Friday 14 Nov 2025 (whichever comes first)

Please mention OZBARGAIN DEAL when contacting our team.

Notes:

  • Offer valid only within the Sydney Metro map area linked above.
  • Complex installs or major electrical work upgrades may incur variation fees (quoted before work begins).
  • No other discounts, referral codes, or promotions apply with this offer.
  • To qualify for this deal, you’ll need an existing solar system, or we can add one as part of your install.
  • Standard VoltX Energy terms & conditions apply.

David & the VoltX Energy Team!

Electrical & Electronics Solar Battery Solar Inverter

Related Stores

VoltX Energy
VoltX Energy

Comments

Search through all the comments in this post.
  • incipient on 04/11/2025 - 20:38
    +11

    How is this only $5k? I can't get a 10kwh+inverter for less than $6k.

    • b0nd on 04/11/2025 - 20:41

      Same question !! Can someone advise on Neovolt?

    • nubix on 04/11/2025 - 20:43
      +4

      What brand are you getting quoted? The subsidies benefit the cheaper battery brands far more.

      This is a great price for 50kwh but the inverter's going to be a real letdown.

    • AssociatedMichael Voltx Energy @ VoltX Energy on 04/11/2025 - 21:44
      +11

      Good question. The $4,999 pricing comes under the Federal Cheaper Home Batteries Program and is limited to 80 installs. We’ve negotiated bulk supply on the Neovolt systems and streamlined installs through our partner teams in Sydney — that’s where the cost efficiency comes from.
      – Michael from VoltX Energy

      • Inyokuchi on 04/11/2025 - 22:33
        +7

        Wow and I thought home battery capacities can't match EV battery. This is an impressive deal

        • hippyhippy on 05/11/2025 - 08:59

          This is not the same battery tech as found in cars

          • dingaling2 on 06/11/2025 - 07:49

            @hippyhippy: Silly question, how is the battery tech different then in LFP EV's like RWD Tesla's? Assuming LFP cells for the solar battery.

            • 1st-Amendment on 07/11/2025 - 10:00

              @dingaling2:

              Silly question

              Not silly at all. I'm not across the latest, but not so long ago it was all the same batteries. Laptop, car, home all used the same battery tech. The difference is in construction and battery management systems.

      • ATTS on 05/11/2025 - 10:28
        -1

        How do people usually determine the financial benefit of installing these batteries ? Roi etc

        And can you go completely off grid if u have these big batteries?

        • jason andrade on 05/11/2025 - 18:40

          You can but it would’nt be sensible to go off grid if you live in an urban area.

          Rural? Probably.

          Bush? Almost certainly for new builds.

          Simple ROI is straightforward.

          • Energy consumption per day w/o PV+ battery?

          • Energy consumption per day with?

          Our PV+battery system data over the last 9 years shows me we are about 95% self sufficient and our breakeven came in about 8.5y.

          Which means the system paid for itself within that time and 1.5y (assuming 10y life) was “free”.

          Modern battery (bigger!) and PV system (much bigger) - like this deal - payback is much quicker I’d suggest.

        • ialam99 on 05/11/2025 - 21:48

          My DB (Ausnet) has a portal that allows 2 years of historical usage data to be downloaded (which has solar exports and grid consumption in seperate lines). Then I simply assumed my solar exports would first offset peak usage (40c from 3pm to 9pm) then any left over would go to offpeak (20c). In addition, there are some plans with 3 hours of free energy so if I used that, I could get 15kwh of free energy every day (5kw x 3 hours) then my sayings would be $1,200 p.a.

          I had no way to figure out how to calculate savings on Amber or VPP but I figure it would likely be higher.

      • FujinShu on 05/11/2025 - 01:59
        +1

        Please show me where you found this?
        Also, does this include installation, and is this price applicable in other states beyond NSW?

      • d86 on 05/11/2025 - 03:22

        That's a very good price if it includes installation. I paid 10.5k for a 28.8kwh battery/5kw inverter and 18 panels in QLD :(

      • DaiShan on 05/11/2025 - 05:21
        +1

        Who was your supplier/installer? I would sign up for that

      • U30004 on 05/11/2025 - 08:00

        I got 15 kw inverter and 42kw fox for similar price

        • lazywombat on 05/11/2025 - 08:29

          Could you please share where you got your FoxESS battery from and what they were like to deal with?

        • gturner on 05/11/2025 - 10:07

          info as well please. Ozbargain style

        • Mat_Lab on 05/11/2025 - 10:38

          Please PM me the details as well as I am interested as well.

          Thankyou!

        • aal04 on 05/11/2025 - 11:35

          pl please too thanks

        • Gotchas on 05/11/2025 - 11:44

          I also pm’d you thanks

        • go2home on 05/11/2025 - 14:39

          Please PM. Thanks,

        • Lord Ra on 05/11/2025 - 15:46
          +7

          Why the secrecy?

      • TomGum on 05/11/2025 - 13:55

        Was it a three phase?

      • indiepop on 05/11/2025 - 21:01

        Hi there

        Just wanting to understand how is the Fox ESS 42KW battery 5KW inverter better than the 50Kw alpha ESS system. Around 4800$ plus 500$ for backup.

        • Brick50 on 05/11/2025 - 21:55
          +1

          Get a bigger inverter

      • suti1 on 06/11/2025 - 17:32

        The AlphaEss can be stacked into 2

        https://www.alphaess.com/Public/Uploads/uploadfile/files/202…

        It is also skinnier, d210mm vs d380mm, if that is a more important consideration than height.

        • Brick50 on 06/11/2025 - 20:35

          only 5kw inverter, not a consideration for me

      • chiesel21 on 06/11/2025 - 18:30

        Can I have the installer contact if possible?

      • 3dprintdeals on 07/11/2025 - 14:02

        link please

    • Goremans on 05/11/2025 - 06:43

      Cheap quality batteries, very…. quick installs. Not a lot of after care service (batteries are not passive systems they need to be managed for years and years to come). I work in the industry - these guys are not our competition as we operate with different clients. But boy oh boy, do we get a lot of business from homes that have been burnt by previous "big box" cheap cost installers.

      To be clear I have no idea if guys are decent - they probably are. But cost wise - like buying an Acer Laptop, vs, a Dell, vs and Apple. Their are tiers. If its too good to be true then its too good 9/10 times.

      • AssociatedVoltX Energy @ VoltX Energy on 05/11/2025 - 07:20

        Hi there,
        I understand your presumption as we have seen it in the industry, but it's not accurate about VoltX.
        VoltX has been in the energy storage industry for a long time. We work with major retailers across Australia. We’re not a pop-up installer… we have established teams and a dedicated after-sales support network to look after customers long-term. Our pricing is a result of negotiating with established battery brands and ordering large volumes.
        Cheers,
        David

        • Goremans on 05/11/2025 - 13:35

          100% i have zero knowledge on your organisation. Sorry if it came out like I was talking ill.

          I just want to warn folks, do you research and do NOT buy on just price (funny saying this on OZB). The after care service is where its at.

          If a consumer has a problem with thier install in 5 yrs time, and the installer is no longer in business- too bad. You can go to the manufacturer but good luck on getting support or booking an electrician to come out.

          I have probably 2-3 of there conversations a week - and we're a high quality but small regional installation company.

          Solar quotes is a good source for customers.

          • AssociatedVoltX Energy @ VoltX Energy on 05/11/2025 - 15:15
            +3

            @Goremans: All good, and totally fair points!
            You’re right… after-care and long-term support matter just as much as the install itself. That’s why we have our own service and support teams, plus partnerships with major manufacturers to ensure warranty coverage well beyond the initial install. We’re here for the long run, not just the sale :)

            Cheers,
            David

          • jason andrade on 05/11/2025 - 19:03
            +1

            @Goremans: If the system has paid for its cost in <5Y then the consumer is much less financially exposed.

        • rooon on 06/11/2025 - 04:40

          " been in the energy storage industry for a long time." Looks like only 3yrs.

      • Ace26 on 05/11/2025 - 07:27

        Which brands do you think are best and what should one expect to pay for a similarly sized battery?

        • Goremans on 05/11/2025 - 13:38
          +2

          Solar quotes has a great comparison site. We use Sungrow, some GoodWe, Tesla if we are used for physical size, we may take on Daye as a budget entry brand.

          Imo fronius inverters and other high tier are overpriced.

          Remember they are ALL made in China- some say otherwise but when you dig down its software or less than 10% of the device.

        • Jhonka on 07/11/2025 - 12:02

          There is no "best". Everything has a chance to fail.

          41.94kWh FOX ESS cost price is just above 11k.

          3.2kWh sungrow SBR modules are around 1400-1500.

      • M00Cow on 05/11/2025 - 07:55
        +1

        batteries are not passive systems they need to be managed for years and years to come

        ???

        • beesider on 05/11/2025 - 09:38
          +2

          Yeah, what a load of BS. Just run the battery till it dies. It's not an engine that requires a change of oil every year.

          • vawiyoci on 05/11/2025 - 11:04
            +2

            @beesider: You mean you don't wash out and refill the acid in your car battery every year??

          • Goremans on 05/11/2025 - 16:29

            @beesider: Its a big part of my job. Everyday dealing with plants that go off-line or have faults. Everyday. I wish it wasn't believe me.

        • Goremans on 05/11/2025 - 13:42

          I won't say who i work for but thats essentially my job. Batteries need to be online to receive firmware updates, they are typically installed as partial "full home" backup so if a system has a glitch and then a blackout happens, and settings like back up are not active (happens a lot), then the power goes out. People are slowly signing up to VPP's which means they need to always online, they loose local connection. People also use EV chargers in their systems and since this is all relatively new products… there are teething issues. We will get to a set and forget stage but the industry (home battery and EV DC and bidirectional) is all pretty new.

          • jason andrade on 05/11/2025 - 19:08

            @Goremans: Just sharing that in the nine years we’ve had a PV + battery system the installer has come out twice to replace a failed micro inverter on the roof and zero times to do anything with the battery.

            The battery vendor has reached out to us twice in the same time period.

            We have had zero outages in that time.

      • ttfb on 05/11/2025 - 08:19

        Hi @Goremans Any thoughts on FoxESS batteries?

        • M00Cow on 05/11/2025 - 10:42

          why would you ask them? They seem to think a battery needs servicing..

          With all these cheap batteries coming in, you need to ask yourself.
          1) how long is the warranty?
          2) will they be around for the warranty?

          The other one is the company. How long have & will they be around? Because mine went belly up 3yrs after I bought, I had an issue and the companies who were recommended by inverter company all wanted $300+ travel time to look.at it…oh & a 4-6wk wait.

          • Tater on 05/11/2025 - 15:59

            @M00Cow: Nothing was said about servicing the battery, it's about after-install support as you found out

          • Goremans on 05/11/2025 - 16:31

            @M00Cow: The one that matter the most - How long will the company be around for. Thats really all that matters. Consumer watch dog is toothless. If the business is gone - who's going to help you with a broken system worth sometimes tens of thousands of dollars?

    • Rhymenoceros on 05/11/2025 - 08:57

      FYI- if you get two inverters you can pair them and get 10 KW. In the event of a off-grid situation, one invertor goes offline and goes into slave mode and ONLY 1x 5 KW inverter can only be used in backup. Usually only two circuits are installed for the backup. I know this as I was about to get it installed, but spent a bit more time researching.The system inside the Voltx is actually an AlphaESS; just different packaging…Still will suit most people and is a great price

      • AssociatedVoltX Energy @ VoltX Energy on 05/11/2025 - 15:28

        Thank you kindly for your comment. What you’ve mentioned is mostly correct… in a dual inverter setup, one inverter does go into standby during backup mode.

        However, for the Alpha ESS systems, we’re not currently offering the dual inverter configuration under this deal.

        Cheers,
        David

        • gturner on 05/11/2025 - 17:49

          Why is that?
          I'm after the dual set up, as I have a battery already installed.
          How would it work, not in a dual set up?
          Would I need to remove the current battery?

  • nicolascage on 04/11/2025 - 20:42
    +6

    Can we get a deal for VIC

    • AssociatedVoltX Energy @ VoltX Energy on 04/11/2025 - 21:05
      +2

      Not yet, we haven't launched into VIC yet.
      This offer is Sydney Metro only for now, and for a limited number of days.

      • aparasher on 05/11/2025 - 05:05
        +5

        Looking forward to your launch in Victoria as I need a solar and battery package before end of thia year.

      • beesider on 05/11/2025 - 09:39
        +3

        Can't wait till you launch in Vic. We need more competition here.

      • ialam99 on 05/11/2025 - 13:12

        Very interested when this offer once its available here in vic.

  • RaihaX on 04/11/2025 - 20:42
    +8

    is this even legit lol, I have had quotes (albeit WA) 50kw battery would be $5000 with an extra 0….

    • AssociatedVoltX Energy @ VoltX Energy on 04/11/2025 - 21:20
      +6

      The pricing is only possible under the Federal Cheaper Home Batteries Program. It’s a genuine offer, just limited in volume and geography.

      Cheers,
      David

      • RTX9090Ti on 05/11/2025 - 07:31
        +2

        So it doesn't include panels, just inverter and battery? can I use my own inverter and get reduced price?

        • Tambani on 05/11/2025 - 09:13

          Answer this for me too please.

        • AssociatedVoltX Energy @ VoltX Energy on 05/11/2025 - 15:36

          @RTX9090Ti & @Tambani
          We can add on panels if needed, however the deal does not include solar.
          Unfortunately, you cannot use your own inverter. The inverter is matched to the battery, and unless you have the same brand, this won't integrate.
          Cheers,
          David

          • Tambani on 06/11/2025 - 12:50

            @VoltX Energy: So, I always have solar and a 3kw inverter. How would the battery's inverter work with this?

  • prisonmike on 04/11/2025 - 20:43
    -8

    I think the OP meant 5KWH battery

    • AssociatedVoltX Energy @ VoltX Energy on 04/11/2025 - 21:19
      +2

      Its not a typo :D
      Please refer to our previous offer, just sharper pricing under the new program and reduced battery costs, plus a strong requirement to fill out installation spots:
      https://www.ozbargain.com.au/node/915675

  • scatman00 on 04/11/2025 - 20:43
    +2

    Any updates on timelines for SA installs?
    Told approx october originally, no updates since and phones ring out…

    • AssociatedVoltX Energy @ VoltX Energy on 04/11/2025 - 21:09

      We’re doing a large number of installs each day, so it’s difficult to comment on your specific order as timing depends on where you are in the queue. We’ve been adding more teams to speed things up, and we should be close to your install window now. Thanks for your patience while we ramp up capacity.
      Cheers,
      David

  • ValouSydney on 04/11/2025 - 20:45

    We had already like 2/3 similar deals on Chinese batteries (e.g. https://www.ozbargain.com.au/node/925016). They are cheap because they use the federal rebate. But nobody knows how they will live in time or support if any issue. The company installing it may be long gone by then. But it's cheap.

    • AssociatedMichael Voltx Energy @ VoltX Energy on 04/11/2025 - 21:47

      That’s fair — there have been a few short-term operators lately. VoltX Energy isn’t one of them; we’re an established Australian company that also installs and supports Voltx-branded systems nationwide. The Neovolt units use Tier-1 LFP cells with full 10-year parts and labour warranty, handled directly by us, not a third party. – Michael from VoltX Energy

      • bobzor on 05/11/2025 - 22:01

        What does Tier-1 mean?

  • battler on 04/11/2025 - 20:49

    Any additional costs and complications hooking this into existing solar?

    • AssociatedVoltX Energy @ VoltX Energy on 04/11/2025 - 21:11
      +1

      Good question.
      This is actually our most common type of install.
      For most standard setups, there are no extra cost. The system is AC-coupled, so it connects to your existing using a smart meter for load control. Extra costs only apply if your switchboard needs upgrades or your layout makes cable runs unusually long.

      • greywine on 04/11/2025 - 22:55
        +7

        Please be careful and get a confirmed quote from neovolt. I got bitten here as they smartly hid in small letters “extra charge will be included for wiring “ . For me they added a charge of $500 onto the final invoice. Despite the neovolt sales rep never mentioning this charge in my discussions ever.

    • airzone on 05/11/2025 - 07:38

      Look out for bollards, smoke detectors, fire sheeting, a concrete base etc…

      • 42 on 05/11/2025 - 07:55

        And mounting brackets

  • 3dprintdeals on 04/11/2025 - 20:49
    +5

    Im waiting for install from the previous deal. The sales reps get quite slow to respond once you have done a deposit.

    • AssociatedVoltX Energy @ VoltX Energy on 04/11/2025 - 21:15
      -3

      That’s a fair comment, but its definitely not intentional. We’ve been tightening the process so updates don’t go missing, but posts like this one trigger a huge wave of inquiries, so some delays are likely. We’re doing our best to get everyone scheduled as quickly as possible.

      • icecold27 on 05/11/2025 - 07:24
        +13

        Logic would suggest taking care of your current customers rather then posting another deal??

        • M00Cow on 05/11/2025 - 08:02
          +1

          but that won't top up the back balance.

        • AssociatedVoltX Energy @ VoltX Energy on 06/11/2025 - 22:22

          @icecold27

          I totally agree with you on focusing on our existing customers, and we are. We’re completing a large number of installs every day across all regions and are already running at full capacity outside Sydney. This post is just a short-term Sydney Metro offer and doesn’t impact existing orders in other areas.

          Cheers,
          David

  • kiwibro on 04/11/2025 - 20:50
    +9

    5kWh inverter is a waste of time if you have a 50kWh battery………

    • 3dprintdeals on 04/11/2025 - 20:52
      -1

      Ive got it quoted to add 2nd hybrid 5kWh inverter

      • kiwibro on 04/11/2025 - 20:53
        +4

        better to just get a 10kWh inverter that mucking around with 2x 5kWh inverters to be honest

        • 3dprintdeals on 04/11/2025 - 20:59
          -6

          I dont think they have for single phase

          • kiwibro on 04/11/2025 - 21:00

            @3dprintdeals: I have 13.2kWh panels , a 10kWh Inverter and a 30 kWh battery all on single phase bro

            • 3dprintdeals on 04/11/2025 - 21:03
              -1

              @kiwibro: I'll ask

            • Goldfire on 04/11/2025 - 21:25

              @kiwibro: Your panels and inverter has a capacity?

              • kiwibro on 05/11/2025 - 19:05
                +1

                @Goldfire: yeah ok bro my bad but I'm sure people know what I meant

            • razgriz88 on 05/11/2025 - 10:45
              +2

              @kiwibro:

              I have 13.2kWh panels , a 10kWh Inverter

              no you don't, you have 13.2kW panels and a 10kW inverter… kW≠kWh… kWh is a capacity

              • kiwibro on 05/11/2025 - 19:03

                @razgriz88: yeah ok bro my bad but I'm sure people know what I meant

        • 3dprintdeals on 04/11/2025 - 21:09
          +1

          @VoltX Energy is there 10kwh hybrid inverters?

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