Enphase microinverters and batteries
Enphase puts a small inverter under every panel on your roof. Each panel converts its own power, so one shaded or faulty panel costs you that panel and nothing else.
Enphase ACT Installer of the Year 2024 and 2025
Why we fit Enphase
A string system wires your panels together in a line and runs the whole line through one inverter on your wall. Enphase does the conversion up on your roof, panel by panel.
One panel stops, the rest keep working
Your array has no central inverter to depend on. A panel that fails stops on its own, and every other panel keeps converting.
We find the fault before we're on your roof
Each microinverter reports its own output, so we can see which panel has stopped and where it sits on your roof. That shortens the service visit, and it's what a warranty claim needs.
Add panels one or two at a time
Your array is not fixed to the length of a string. Put in an EV charger, or fill a second roof face later, and we add the new panels to the system you already have.
Your wall stays clear
The electronics sit up under your panels, so there's no big inverter box beside your meter board. That matters if the only wall you have spare is outside a bedroom.
Shade, and roofs that face more than one way
Canberra roofs are rarely one clean rectangle facing north. A string of panels works at the pace of its weakest panel. So a chimney shadow at four o'clock in June costs you more than the one panel it lands on.
Use every face of your roof
A string needs panels of one orientation on one run. With an inverter under each panel, we can run your east face and your west face on the same system, and each panel converts on its own.
A gum tree, a chimney, a neighbour's roofline
Shade moves through the day and through the year. Panel-level conversion keeps the loss to the panels that are in shadow at the time, so the rest of your panels keep working.
Enphase grades Sunstak a Platinum Installer
ACT Installer of the Year, 2024 · 2025
Solar battery rebate
See how the Cheaper Home Batteries discount applies to one, two, three or four IQ Battery 5P units. The discount is federal, so it applies in the ACT and in NSW. An accredited retailer takes any eligible discount off your invoice on the day. The discount per kWh reduces as the stack gets bigger, and the rate steps down every six months until 2030.
| Units | Usable storage | Federal discount | Added by this step |
|---|---|---|---|
| One IQ Battery 5P | 5 kWh | $1,224 | Full rate |
| Two IQ Battery 5P | 10 kWh | $2,448 | +$1,224 |
| Three IQ Battery 5P | 15 kWh | $3,564 | +$1,116 |
| Four IQ Battery 5P | 20 kWh | $4,284 | +$720 |
Rates as at 29 July 2026 · Clean Energy Regulator · installs to 31 December 2026
Enphase IQ Battery 5P, in figures
The IQ Battery 5P holds 5 kWh usable and delivers 3.84 kVA continuously, with 7.68 kVA available for three seconds. Enphase covers its lithium iron phosphate (LFP) cells for 15 years or 6,000 cycles. Stack more than one where your home needs the capacity.
| Property | IQ Battery 5P |
|---|---|
| Cell chemistry | LFP (lithium iron phosphate) |
| Usable capacity | 5 kWh per unit |
| Continuous power | 3.84 kVA |
| Peak power | 7.68 kVA for 3 seconds, 6.14 kVA for 10 seconds |
| Warranty | 15 years, up to 6,000 cycles |
| Protection | Ground-fault protection and thermal monitoring, both integrated |
| Expansion | Modular, so units are added to a system already installed |
| Firmware | Updated over the air |
- Enphase IQ Battery 5P specification as published by Sunstak, read 24 August 2026
Compare Enphase with what else we fit
Tesla
Tesla Powerwall 3
The battery we fit most, with the solar inverter built into it. Worth reading before you settle on a stack of 5 kWh units.
Whole system
Solar and battery
How we size an array against your bill, your roof and your switchboard, and what happens on the day the crew arrives.
Every installation backed by the Sunstak guarantee
Sunstak master installers
Our master installers have completed at least 100 installations with 5/5 star reviews.
Installation with no surprises
We confirm the scope, price and installation plan. You'll know exactly what's included, what happens next and what to expect on the day, with no last-minute variations or surprises.
Roof leak guarantee
If your roof leaks after our installation, we pay you $500 cash and fix it immediately.
Stock guarantee
If we can't supply the product on your design, we replace it with an upgrade and your price does not move.
Book an Enphase consult
Speak with one of our Energy Geeks today.
- Solar Accreditation Australia approved
★★★★★
Having used two other installers previously, the Sunstak experience is head and shoulders superior…
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