The current page does not exist in the target language.

Do you want to change the language and go to the home page or do you want to stay on the current page?

Change Language
Installers & partners

Fronius Primo GEN24 UL

Residential inverter with integrated backup power

Our single-phase inverter is the ideal heart of residential PV systems. The Fronius GEN24 combines smart solutions, intelligent software, and thoughtful engineering to achieve maximum yields.
With PV Point, the Fronius GEN24 offers an integrated basic backup power supply: Connected devices are supplied with backup power through a designated socket as long as the sun is shining.
With its diverse features, the Fronius GEN24 enables economic sustainability for long-term energy self-sufficiency. Discover the key advantages for installers and their customers:
- Integrated shade management
- Basic backup power without battery
- Highly flexible system design potential
- Built-in longevity thanks to the Active Cooling Technology
- Made in Europe
- Sustainably future-proof
Further technical data can be found in the data sheet which you find in the download section of this page. 
Please choose your desired product.

Product details


474 mm
516 mm
165 mm
Weight15,08 kg
Weight incl. packaging18,7 kg
Inverter designTransformerless
CoolingActive Cooling Technology
InstallationIndoor and outdoor installation
DC PV connection technology2x DC+1, 2x DC+2 and 4x DC- spring-type terminals for solid: copper
DC battery connection technology1x DC+ and 1x DC- spring-type terminals for solid: copper
AWG 12-8
AC connection technologySpring-type terminals for solid: copper stranded / fine stranded: copper: AWG 14-8
Backup power spring-type terminals: AWG 16-8
Back-up power functionsPV Point
Interference emission classB


DC insulation measurementYes
Overload behaviourOperating point shift, Power limitation
DC disconnectorYes
DC Reverse polarity protectionYes
Arc fault circuit interrupter (Fronius Arc Guard)Yes


WLAN / 2x Ethernet LANFronius Solar.web, Modbus TCP SunSpec, Fronius Solar API (JSON)
6x digital in/out + 6x digital inInterface to ripple control receiver, energy management
Emergency stop (WSD)Yes
Datalogger and web serverIncluded
2x RS485Modbus RTU SunSpec (third-party supplier) / Fronius Smart Meter

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.

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.

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.

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.

We think you are located in a different country

The country currently selected is Fronius International. Would you like to stay on this page or do you want to switch to the local website?