Inverters
Fronius GEN24 Plus
Solar now, battery when you are ready. The GEN24 Plus takes a battery directly, so adding storage later does not mean paying for a second inverter or replacing the one on your wall.
The point of a hybrid is the second decision
Plenty of households and businesses want panels on the roof now and would rather make the battery call later, once they have seen a few bills and worked out what their evening load actually looks like.
A standard string inverter makes that later decision expensive. You either retrofit a battery that brings its own inverter and its own conversion losses, or you replace the inverter you installed two years earlier. A hybrid takes the battery on the DC side whenever you are ready, and the inverter you bought is still the inverter you use.
That timing question has a deadline attached at the moment. The federal battery rebate is scheduled to step down on 1 January 2027, which puts a real date on a decision most people would otherwise leave open indefinitely.
Backup power, explained properly
Backup is the most misunderstood part of any inverter conversation, so it is worth separating the two things the GEN24 range actually offers.
PV Point: backup without a battery
Every GEN24 includes a feature Fronius calls PV Point. It is a dedicated socket that stays live during a blackout, supplying up to 3 kW while there is sun on the panels.
Be clear about the limits. It powers whatever is plugged into that one point. It does not power the building, it does nothing at night, and output rises and falls with the light.
Full Backup: the whole site, with a battery
Add a compatible battery and the GEN24 Plus can carry the whole property through an outage, including three phase loads such as a heat pump.
Two limitations Fronius states directly. Full Backup needs additional external components for grid changeover, so it is a line on the quote rather than a setting someone enables. And it is not offered on the Symo GEN24 3.0 to 5.0 Plus, which narrows the model choice if backup is your reason for buying.
Monitoring and fault detection
Solar.web reports generation, consumption and battery state, and supports remote diagnostics. The current GEN24 SC generation also ships with Fronius Arc Guard as standard, which watches the DC side for arcing and shuts down if it finds a fault.
Where it falls short
Noise. The GEN24 uses active cooling with internal and external fans and runs to around 65 decibels at maximum, which puts it among the noisier inverters available. Mounted in a plant room, a garage or on a wall away from occupied space, it is a non issue. Mounted outside a bedroom or beside a meeting room, it becomes one within a fortnight.
Cost. Fronius sits at the premium end and the price reflects it. It is a highly reliable inverter with low failure rates, and cost and noise are genuinely the two places it falls short. Any supplier who tells you it has no drawbacks is selling rather than advising.
There is also an open question in the market about how committed European manufacturers remain to Australian residential and commercial inverters, after SMA withdrew from that segment. Fronius has given no indication of following and continues to release product here, including its own battery.
Specifications
| Feature | Primo GEN24 Plus | Symo GEN24 Plus |
|---|---|---|
| Configuration | Single phase hybrid | Three phase hybrid |
| PV Point backup | Up to 3 kW, one dedicated socket | Up to 3 kW, one dedicated socket |
| Full Backup | With battery and external changeover components | Not available on 3.0 to 5.0 Plus models |
| Battery coupling | DC coupled | DC coupled |
| Cooling | Active | Active |
| Monitoring | Fronius Solar.web | Fronius Solar.web |
| Arc protection | Arc Guard standard on SC generation | Arc Guard standard on SC generation |
Capacity ranges and current warranty terms are confirmed against the Fronius Australia datasheet at the time of quote.
Questions we get asked
Can I add a battery later?
Yes, and it is the main reason to choose a hybrid. The battery connects on the DC side without replacing the inverter. Tell us at the original install if a battery is likely, because it affects which model suits you.
Will it keep the building running in a blackout?
Partly, without a battery. PV Point supplies up to 3 kW through one dedicated socket while the sun is out. Whole site backup needs a battery plus external changeover components, and is not available on every model in the range.
How loud is it, really?
Around 65 decibels at maximum, which is at the noisier end of the market. Placement solves it, and we work out the position during the site assessment rather than on install day.
Is it worth paying more than a mid tier hybrid?
Sometimes. It is a premium product with low failure rates and long standing Australian support, and cost is its main drawback. Whether that is worth paying depends on how long you plan to hold the property.
What warranty comes with it?
Fronius provides a manufacturer warranty with Australian support, and the unit is built so individual components can be replaced rather than the whole inverter. We confirm current terms with you at quote.
