Fronius Symo GEN24 Plus
Inverter for private PV systems with PV Point or Full Backup
Our three-phase Fronius GEN24 Plus hybrid inverter is the perfect heart for private photovoltaic systems. The Fronius GEN24 Plus with its PV Point provides an integrated basic backup power supply or even a comprehensive backup power solution with the option to connect a battery system.
The Fronius GEN24 Plus hybrid inverter enables energy self-sufficiency for electricity, heating, cooling and e-mobility with the use of a battery system. This means that the Fronius GEN24 Plus with Full Backup has a backup power solution that can even supply 3-phase loads, such as heat pumps. What’s more, the Multi Flow Technology lets the hybrid inverter supply parallel energy flows in the system, even in backup power mode.*
*The Full Backup option is not available for the Fronius Symo GEN24 Plus 3.0-5.0. Additional external components for grid switchover are required for the Full Backup. More information on this can be found in the operating instructions.
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Technical Data
Input Data
Number of MPP trackers | 2 |
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Maximum PV input power | 4180 W |
Max. input current (Idc max) | 12,5 A / 12,5 A |
Max. short circuit current, module array* | 20,0 A / 20,0 A |
DC input voltage range (Udc min - Udc max) | 80-1000 V |
Feed-in start voltage (Udc start) | 80 V |
Nominal input voltage (Udc,r) | 610 V |
MPP voltage range (Umpp min - Umpp max) | 170 - 800V |
Usable MPP voltage range | 80-800 V |
Number of DC connections | 2+1 |
Max. PV generator power (Pdc max) | 6 kWpeak |
Output Data
AC nominal output (Pac,r) | 4000 W |
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Max. output power (Pac max) | 4000 VA |
Max. grid power demand | 10 VA |
Max. AC output current | 8 A |
Grid connection (Uac,r) | 3~NPE 230V / 400V, 3~NPE 220V / 380V |
AC voltage range (Umin - Umax) | 154-280 V |
Frequency (fr) | 50 / 60 Hz |
Frequency range (fmin - fmax) | 45-66 Hz |
Power factor (cos φac,r) | 0,7-1 ind./cap. |
Back-up power | 1 ~ NPE 220 V / 230 V |
Nominal AC output current (380VAC) | 6,1 A |
Nominal AC output current (400VAC) | 5,8 A |
Output Data PV Point
Max continuous output power | 3000 VA |
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Nom. output current (Iac max) | 13 A |
Grid connection | 1 ~ NPE 220 V / 230 V |
Frequency | 50 Hz / 60 Hz |
Max. switchover time PV-Point | 15 s |
Max. switchover time Full Backup | 10 s |
Frequency in backup power mode | 53 Hz |
Battery Connection
Number of DC connections | 1 |
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Max. input current (Idc max.) | 12,5 A |
Max. input / output power (Depending on the connected battery) | 4180 W |
Min. DC input voltage | 160 V |
Max. DC input voltage | 531 V |
General Data
Mains Frequency | Hz |
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Dimension / width | 474 mm |
Dimension / height | 530 mm |
Dimension / depth | 165 mm |
Weight | 15,61 kg |
Weight incl. packaging | 19,35 kg |
Degree of protection | IP66 |
Protection class | 1 |
Overvoltage category (DC / AC) 1) | 2/3 |
Night-time consumption | <10 W |
Inverter design | Transformerless |
Cooling | Regulated air cooling |
Installation | Indoor and outdoor installation |
Ambient temperature range | -25 - +60°C |
Permitted humidity | 0 - 100% |
Max. altitude | 3000m / 4000m |
Max. altitude | 4000 m |
DC PV connection technology | 3x DC+ and 3x DC- push-in spring terminals 2.5 - 10 mm² |
DC battery connection technology | 1x BATT+ and 1x BATT- push-in spring terminals 2.5 - 10 mm² |
AC connection technology | 5 pole AC push-in spring terminals 1.5 - 10 mm² 3 pole backup power push-in spring terminals 1.5mm² - 10mm² 5x PE-screw terminals 2.5 - 16 mm² |
Certificates and compliance with standards | IEC 62109, IEC 62116, IEC 61727, IEC 62909, VDE 0126, VDE AR-N4105, AS/NZS 4777.2, EN 50549, CEI 0-21, G 98, R25 6) |
Back-up power functions | PV Point |
Sound emissions | 36 dB(A) |
Interference emission class | B |
Compatible batteries 5) | BYD Battery-Box Premium HVS/HVM 4) & LG FLEX |
Efficiency
Max. efficiency (PV - grid) | 98,2 % |
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European efficiency (ηEU) | 97.2% |
η at 5% Pac,r 3) | 89.6% |
η at 10% Pac,r 3) | 94.0% |
η at 20% Pac,r 3) | 96.5% |
η at 25% Pac,r 3) | 97.0% |
η at 30% Pac,r 3) | 97.3% |
η at 50% Pac,r 3) | 97.9% |
η at 75% Pac,r 3) | 98.1% |
η at 100% Pac,r 3) | 98.2% |
MPP adaptation efficiency | 99.9% |
Protection Devices
DC insulation measurement | Yes |
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Overload behaviour | Operating point shift. Power limitation |
DC disconnector | Yes |
DC Reverse polarity protection | Yes |
Interfaces
WLAN / 2x Ethernet LAN | Fronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON) |
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6x digital in/out + 6x digital in | Interface to ripple control receiver, energy management |
Emergency stop (WSD) | Yes |
Datalogger and web server | Included |
2x RS485 | Modbus RTU SunSpec (third-party supplier) / Fronius Smart Meter, battery, Fronius Ohmpilot |

Integrated data communication
We are the first inverter manufacturer to offer a data communication package with fully integrated datalogging, WLAN, Ethernet, energy management, web server and a range of interfaces. The inverter is connected to the internet by network cable or WLAN - without additional cabling - and grants you the perfect overview of how the PV system is operating. Connection to third-party components is provided by means of interfaces such as Modbus TCP SunSpec, Modbus RTU SunSpec or Fronius Solar API (JSON). The open interfaces can also be operated in parallel to the Fronius Solar.web.
SuperFlex Design
The Fronius SuperFlex Design is an ingenious combination of technical performance attributes that make designing your PV system not only extremely simple, but also incredibly flexible. The key performance factors of the SuperFlex Design are two MPP trackers, together with a high system voltage and wide DC input voltage range. Every DC input, and therefore every MPP tracker, is able to accommodate the entire nominal output of the inverter. Regardless of whether the inverter has to cope with different roof orientations, shading of one or two strings, or the use of residual modules: a Fronius inverter featuring integrated SuperFlex Design will satisfy every conceivable operational PV system planning scenario using just a single inverter model.
Dynamic Peak Manager
The Dynamic Peak Manager is a new MPP tracking algorithm that dynamically adapts its behaviour when searching for the optimal operating point. Its special feature is that the Dynamic Peak Manager automatically checks the entire characteristic curve on a regular basis and finds the global Maximum Power Point (GMPP), even in partial shade.
Multi Flow Technology
Using Multi Flow Technology, different DC and AC energy flows are possible in parallel. On the one hand, this allows energy from the modules and from the battery to be made available for domestic use at the same time. However, it is also possible for the energy from the modules to be simultaneously fed into the battery and the in-house network. Furthermore, not only can the battery be charged from the DC side, but also from the AC side (for example from existing PV systems or other energy sources, such as a wind turbine). This means the inverter is also suitable for AC-coupled retrofitting. The inverter manages these energy flows in such a way that the highest possible degree of self-sufficiency is achieved.
Full Backup
With the full backup option, the entire household, i.e. 1 phase as well as 3 phase devices, can be supplied with electricity in the event of a grid outage. For Full Backup, a battery and a switching device for safe grid disconnection are required in addition to the inverter.
PV Point
The integrated basic grid back-up - a socket that is supplied with power during power outages - ensures that important loads can conitunue to operate should the power fail.
Active Cooling
Active cooling technology relies on one or more fans, which not only avoid hot spots, but also regulate the air circulation inside the inverter, thus keeping the temperature of the power electronics low. This has a positive effect on the service life of the devices, optimises yields and reduces costs. At Fronius, active cooling is supplied as standard in all devices.FOOTNOTES FOR TECHNICAL DATA
1) According to IEC 62109-1. Option to retrofit surge protection device DC SPD type 1+2 for 2 MPP trackers available under the following item number: 4,240,313,CK
2) Unrestricted / restricted voltage range.
3) At Udc,r
4) This does not apply to the BYD Battery-Box Premium HVS 12.8 & HVM 8.3
5) Depending on the country-specific certification and availability
6) You can find the current certificates under www.fronius.com/symo-gen24-plus-cert
* Isc pv = Isc max ≥ Isc (STC) x 1,25 according to e.g..: IEC 60364-7-712, NEC 2020, AS/NZS 5033:2021.