Fronius International GmbH

Fronius International is a family-owned company from Austria. As the technology leader, we find, develop and implement innovative methods to monitor and control energy for welding technology, photovoltaics and battery charging.

Company profile

Over 7000 employees worldwide, a current export share of 89 percent, and 1366 active patents: that’s us, that’s Fronius. Founded in 1945 as a regional one-man operation, we are now a global player - a fact that is impressively demonstrated by our 37 international subsidiaries and our network of sales partners in more than 60 countries. And yet, at our core, we are still a family-owned company from Austria, active in photovoltaics, welding, and battery charging technology. We have always developed products and solutions for a future worth living, offering our customers an all-in-one package in the process: from advance planning and consulting to ongoing monitoring and a repair service tailored to their specific needs. We are innovative. We are curious. We are Fronius.

Founded in 1945 as a regional one-man operation, we are now a global player.

Role in the project

Leader for Use case 9, PV-Inverter

Key contribution

Development of an intelligently integrated GaN-based power module for the next generation of solar inverters in the 12 kW residential area (Vin = 150 – 550 Vdc / Vout = 230 Vac). We will work on safety, sensor, and control concepts for the safe operation of GaN modules, as well as on conceptual design of a new control platform for GaN-capable solar inverters. Furthermore, we aim for magnetics for higher switching frequencies (> 100 kHz) and we will generate LCA input and reliability data on system level. We will also address the criteria for Ecodesign of PV inverters regarding Resource Efficiency Requirements (Design for reliability, Design for repair) and Energy Efficiency Requirements (Minimum System Efficiency, Design for smart-readiness).

Fronius International

Froniusstraße 1
4643 Pettenbach


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