Fronius International Fronius Primo GEN24 4.6 Plus
4.6 kW
Hybrid
Single-phase
Battery-ready
Rated AC (kW)
4.60
Typical for its class
Euro eff. (%)
97.2
Typical · median 97.2%
MPPT
2
Typical · median 2
Max DC (V)
600
Typical · median 600 V
Weight (kg)
15.4
Typical · median 15.5 kg
Warranty (yrs)
-
Not published
The Fronius GEN24 series are modern grid-connected inverters featuring an advanced backup power function, designed for residential and small commercial installations. In the GEN24 Plus versions, they operate as hybrid inverters - enabling energy storage and compatibility with compatible batteries (including BYD Battery-Box Premium HVS/HVM and LG FLEX). In practice, this translates to higher autarky consumption and a genuine readiness for prosumer billing.
A key feature is PV Point - built-in basic backup power that can operate even without batteries, as long as it is sunny. For more demanding applications, the Full Backup option is available, requiring additional transfer switches.
Two MPPTs simplify the design of rooftop systems with different orientations and better handle partial shading. High European efficiency translates into stable yields under typical operating conditions in Poland. Monitoring and communication (Wi-Fi, Ethernet, integration with the Fronius Solar.web ecosystem) enable quick system diagnostics and optimized energy consumption. The devices meet required standards and have access to current certificates, with the manufacturer offering extended warranty packages.
Ranking
Metric
This inverter
Median
Position in class
Rank in class
European efficiency
97.2%
97.2%
Typical
119
MPPT trackers
2
2
Typical
13
Max DC input voltage
600 V
600 V
Typical
94
Weight per kW
3.3
3.3
Typical
184
Warranty
-
5 yrs
Not published
-
Colour key
Strong - top 25%
Typical - middle 50%
Weak - bottom 25%
Price offers
| Shop | Country | Price | Per kW | Stock | Offer updated | Link to shop |
|---|---|---|---|---|---|---|
| solarify.es | Spain | 1 521.45 € incl. VAT | 330.75 €/kW | Not stated | 22h ago | Visit shop |
Specifications
Rated AC power
4.6 kW
Continuous output
Max apparent power
4.60 kVA
Phases
Single-phase
Nominal AC voltage
230 V
220/230 Vac (+20%/-30%)
Max AC current
20.9 A
Grid frequency
50 Hz
Range 45-65
Power factor
0.8-1 ind./cap.
Harmonic distortion (THD)
2.0 %
Max DC input power
4.75 kW
DC/AC ratio 1.03
Max DC voltage
600 V
Caps the string length
MPPT voltage range
65 to 530 V
Start-up voltage
80 V
MPPT trackers
2
2 strings each
Max input current per MPPT
22.0 A
Must exceed the panel's Imp
Max short-circuit current per MPPT
41.2 A
Must exceed the panel's Isc
European efficiency
97.2 %
Weighted across part loads
Max efficiency
97.6 %
Best single operating point
Battery port
Yes
Battery voltage
150-455 V
Max charge current
22.0 A
Max discharge current
22.0 A
Dimensions
530 × 474 × 165 mm
Height × width × depth
Weight
15.4 kg
3.3 kg per kW
Enclosure
IP66
Cooling
forced-air
Noise
42 dB
Operating temperature
-40 to 60 °C
Max humidity
100 %
Max altitude
4000 m
Interfaces
Wi-FiEthernet
Protocols
Fronius Solar.webModbus TCP SunSpecFronius Solar API (JSON)RS485 Modbus RTU SunSpec
Protection
DC switch
Certifications
IEC 62109IEC 62909AS/NZS 4777.2CEI 0-21ABNT NBR 16149ABNT NBR 16150IEC 62116IEC 61727G98/G99
Alternatives
Inverter
Power
Euro eff.
MPPT
Weight
Difference
Fronius International
Fronius Primo GEN24 4.6 Plus
4.6 kW
97.2%
2
15.4 kg
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About the Fronius GEN24 series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.
What are the key differences between the Fronius GEN24 and the GEN24 Plus version?
The basic GEN24 is a grid-tied inverter with PV Point functionality, meaning it provides minimal backup power throughout the day without the need for batteries. The GEN24 Plus version is a hybrid inverter that also supports energy storage systems such as BYD Battery-Box Premium HVS or HVM, and LG RESU FLEX. Only the Plus version allows for full self-consumption and the use of electricity at night from stored energy.
Does the Fronius GEN24 Plus system function during a power outage without the use of batteries?
Yes, but within certain limits. Thanks to the PV Point function of the inverter, it can power selected household circuits only during the day, when solar panels generate energy. Without batteries, the power and availability of backup power depend on sunlight. Full backup power, including for large appliances such as heat pumps, is only achieved with the Full Backup option, which requires batteries and additional switching components.
Which batteries are compatible with the Fronius GEN24 Plus inverter?
The Fronius GEN24 Plus is officially compatible with BYD Battery-Box Premium HVS (5.1-10.2 kWh) and HVM (11.0-22.1 kWh) batteries, as well as LG RESU FLEX. The list of certified batteries is regularly updated by the manufacturer. Before purchasing a storage system, it is advisable to check the current compatibility list on the Fronius website, as connecting an uncertified battery may lead to warranty issues.
What is the warranty on Fronius GEN24 inverters?
The standard manufacturer's warranty is 2 years. After registering the device on the Fronius Solar.web platform, the warranty is extended free of charge to 7 years. Fronius also offers paid extended warranty packages that cover a longer period of protection or additional service support, which is particularly beneficial in hybrid systems with batteries.
Is the Fronius GEN24 suitable for roofs with panels in various orientations?
Yes, the GEN24 series features two independent MPPT (Maximum Power Point Tracking) controllers, which allows for the connection of two separate strings of panels with different orientations or angles, such as a southern and eastern-facing array. Each MPPT operates independently, so shading or poor performance on one string does not affect the performance of the other. This is a significant advantage for typical pitched roofs in Poland.
How to monitor the performance of the Fronius GEN24 inverter, and is there a mobile app available?
The Fronius GEN24 supports communication via WiFi or Ethernet and integrates with the Fronius Solar.web platform, accessible via a web browser and a mobile app. This allows for real-time monitoring of production, consumption, battery status, and alarms. The system also enables remote updates to the inverter software and quick diagnostics without the need for an on-site technician.