Solax Battery Installer, Northern Rivers NSW

Sun Connect Solar installs Solax hybrid inverters and batteries across the NSW Northern Rivers, from Tweed Heads to Evans Head and west to Lismore. Our own in-house electricians design and install every system, with no subcontractors, the federal battery rebate built in and a 25-year workmanship warranty on our installation work. We are a SAA-accredited installer.

Work out your federal battery rebate in seconds with our battery rebate calculator.

A Solax battery, fitted by a local electrician who will tell you if something else suits you better.

Most of the batteries we fit are Sigenergy (premium) or GoodWe (mid-tier). Solax is the one we fit when you already run Solax equipment, or when its modular stack is the better match for your home.

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Solax batteries at a glance

Specifications from Solax’s Australian product pages and the X1-VAST manual, checked 8 October 2026. Ranges change, so we confirm the exact models in your proposal.

Why we fit Solax

• Modular. The HS51 builds up in 5.1 kWh modules, so capacity suits your usage and can be added to later.
• Natural fit for existing Solax systems. If you already have a Solax hybrid inverter, adding battery modules is often the simplest path.
• Blackout backup. Through the hybrid inverter’s backup output, so the home can keep running in an outage.
• Weather-rated. The IP66 rating means the battery can go indoors or outdoors, subject to a compliant position.
• App monitoring. The SolaXCloud app shows solar, battery and grid use. We set it up before we leave.

Who Solax suits, and who it does not

It is often a good fit if you:

• already run a Solax hybrid inverter and want to add a battery
• want a modular battery sized to your actual usage
• want a battery rated for indoor or outdoor placement

Be aware that not every inverter can take a battery. A standard grid-connect inverter generally cannot, so adding a battery may mean changing the inverter. Where that is the case we will lay out the options, including a GoodWe or Sigenergy all-in-one, and recommend one. If you want the most detailed control and room to grow, Sigenergy is our pick. If you want a very high-quality battery at a lower price point, look at GoodWe.

Solax and your solar panels

The battery and inverter brand is chosen separately from your panels. We fit AIKO and Jinko panels, and pair them with whichever battery suits your home. See adding a battery to existing solar if you already have panels.

Blackout backup with Solax

A typical install backs up the whole home unless you ask us to leave some circuits out, an EV charger for example. How much can run at once depends on the hybrid inverter size, and we confirm the set-up at the site visit. See blackout backup batteries.

Rebates and the NSW 0% loan

We build the federal Cheaper Home Batteries rebate into every eligible design and take it off at point of sale. We handle the paperwork, and we check that the exact Solax model is on the approved list before it goes in your proposal. The rebate steps down on 1 January 2027 and again on 1 July 2027, set by install date: see the battery rebate step-down and your rebates.

Many customers also use the NSW Home Energy Saver program: a 0% interest loan up to $15,000 for solar and batteries, through Brighte, up to 10 years. Rebates come off first, then the loan covers the rest. How the NSW 0% loan works, or check your rebate and 0% loan.

0% p.a. (comparison rate 0% p.a.). Brighte loans. Eligibility and lender approval apply.

How it works with us

1. Free energy assessment: send 1–2 recent power bills (or leave your details and we’ll text you to set up a quick call). We size the battery, and any extra solar, from your real usage. More on battery sizing.

2. Custom design: you get a proposal with the federal Cheaper Home Batteries rebate already built in.

3. Face-to-face site visit before every install: we check the battery goes in a compliant position, assess your switchboard (including any RCBO upgrades, see switchboard upgrades and RCBOs), and agree what stays on in a blackout. No hidden surprises on the day.

4. Install: usually one day, by our own electricians. We handle the grid application, set up monitoring, and finish with a sign-off call. Grid connection typically follows 1–3 weeks later. See the full process.

Warranties

• Solax manufacturer warranty: 10 years on the batteries we install (terms are in Solax’s warranty documents and your proposal)
• 25-year workmanship warranty from us, covering our installation work

Why locals choose us for Solax

• Our own in-house team designs every system and does every install. No subcontractors, and 25 years in solar and large commercial electrical work.
• SAA-accredited installer (Solar Accreditation Australia), NETCC accredited, a Sigenergy-approved installer and a fully licensed NSW electrical contractor (licence 343044C).
• 25-year workmanship warranty on our installation work. The battery and inverter carry the manufacturer’s own warranty.
• A face-to-face site visit before every install, so there are no surprises on the day.

Solax FAQs

Do you install Solax batteries?

Yes. Sun Connect Solar installs Solax hybrid inverters and HS51 batteries across the Northern Rivers, using our own electricians. We lead with Sigenergy (premium) and GoodWe (mid-tier), and we tell you honestly if one of those suits your home better.

What Solax battery do you install?

Most often the Solax HS51, a stackable lithium iron phosphate battery built from 5.1 kWh modules, paired with a Solax X1-VAST hybrid inverter. We confirm the current range and the best match for your home at the assessment.

How much battery can I get with Solax?

Solax lists the HS51 from 10.2 kWh up to 66.5 kWh in total, built from 5.1 kWh modules. We size the battery from your bills, not from a standard package: see battery sizing.

Can I add a Solax battery to my existing Solax solar?

Often, yes, but it depends on the inverter. Solax hybrid inverters such as the X1-VAST take a battery directly. A standard grid-connect inverter usually does not, so we check your model first and tell you your options. See adding a battery to existing solar.

Will a Solax battery keep my power on in a blackout?

Yes, with a hybrid inverter that has a backup output and the right switchboard set-up. Solax lists a switchover of under 10 milliseconds for the X1-VAST. A typical install backs up the whole home unless you ask us to leave some circuits out. We confirm what stays on at the site visit. See blackout backup batteries.

What is the Solax warranty?

The batteries we install carry a 10-year battery warranty, with Solax’s conditions set out in its warranty documents and your proposal. Our 25-year workmanship warranty is separate and covers our installation work only.

Can a Solax HS51 battery be installed outside?

Solax lists the HS51 as IP66 for indoor or outdoor use. We still choose a compliant position at the site visit, with shade and weather protection in mind.

Is a Solax battery eligible for the federal battery rebate?

We build the federal Cheaper Home Batteries rebate into every eligible design and take it off at point of sale. Eligibility depends on the exact battery model being on the approved list, so we check the model before it goes in your proposal.

Should I choose Solax, Sigenergy or GoodWe?

If you already run Solax equipment, adding Solax is often the simplest. For a new system or an inverter swap, Sigenergy (premium) and GoodWe (mid-tier) are the two we recommend most often. See how to choose a home battery.

Where we install Solax batteries

We install Solax batteries across the Northern Rivers, from Tweed Heads south to Evans Head and west to Lismore. Our own electricians do every job in this area, with a face-to-face site visit before every install.

• Tweed Heads
• Banora Point
• Bilambil Heights
• Kingscliff
• Pottsville
• Murwillumbah
• Mullumbimby
• Ocean Shores
• Brunswick Heads
• Byron Bay
• Suffolk Park
• Bangalow
• Lennox Head
• Ballina
• Alstonville
• Lismore
• Goonellabah
• Coraki
• Woodburn
• Evans Head

Not sure if you are in our area? See the areas we service or call 0483 903 020.

Comparing brands? See GoodWe ESA vs SolaX, which also covers SolaX vs Sigenergy, and if you live near the beach, read what the makers say about salt air.

Related guides: Solax X1-VAST and HS51 owner guide | Sungrow, Solax and Tesla owner basics | Single-phase vs three-phase solar and batteries

Other batteries we install: Sigenergy · GoodWe · Tesla Powerwall · Sungrow · Other battery brands · Compare them side by side

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