In one line
The FOXESS 15kW 27.84kWh 3 Phase battery system: a 15 kW hybrid inverter paired with 27.84 kWh of storage, supplied and installed as one package.
Who this suits
Large three-phase array; check network export limits.
Before you choose on size
Federal battery certificates are tiered — weighted toward the first 14 kWh of usable capacity, tapering from 14 to 28 kWh, and small above that. A larger battery does not attract a proportionally larger discount. Choose capacity on your evening and overnight usage and whether you want extended backup, not on the rebate.
→ How the rebates work
What is in the FOXESS 15kW 27.84kWh 3 Phase battery system

The FOXESS H3-15.0-Smart hybrid inverter with a 27.84 kWh CQ7 high-voltage battery stack — one master unit plus three modules at 6.96 kWh each, all usable.
At 15 kW this is a system for large homes with genuinely high consumption — pool plant, ducted climate control and EV charging running together — and for small commercial sites. With 200% DC oversizing it accepts up to 30 kW of panels, and the included six-CT smart meter measures import and export across all three phases.
Because 15 kW is above the usual Victorian residential range, network approval and export limits need to be confirmed for your address before installation.
Panels, mounting and installation are quoted separately after a site assessment. Indicative values are not a quote.
Manufacturer information on the FOXESS battery system: FOXESS CQ7 battery. You can check any battery on the Clean Energy Council approved batteries list.
Additional information
| Brand | FOXESS |
|---|---|
| Phase | 3 Phase |
| Inverter Output | 15 kW |
| Battery Capacity | 27.84 kWh |
| CT Configuration | 6CT |


