Fronius International GmbH

As the global technology leader, at Fronius we concentrate our skills in our three Business Units: Perfect Charging, Perfect Welding and Solar Energy. These three Business Units unite around a single passion: delivering innovation after innovation to shift the limits of what's possible.

Fronius International GmbH is an Austrian enterprise with its head office in Pettenbach (Upper Austria). The company has three business units “Perfect Welding”, “Solar Energy” and “Perfect Charging”. Outstanding products and services are the basis for the high technical performance of Fronius on the world market. The youngest of the three Fronius business units is Solar Energy, which is producing innovative solutions for the photovoltaics industry since 1992. As the solar pioneer and with the “24 hours of sun” vision, Fronius makes a significant contribution to the energy revolution.

The goal is to realize a future in which 100% of the world's energy needs are satisfied through renewable sources.

Currently, Fronius employs more than 4,550 people worldwide, with 550 working in Research & Development department. This central R&D-facility is located at Thalheim / Wels. Products going into export earned more than 91 % of the turnover in 2017. As a technology and innovation leader, Fronius currently owns more than 1,240 patents.

Logo of Fronius

Fronius Technologies Austria AG
Froniusstraße 1
4643 Pettenbach


Fronius will be a partner in UltimateGaN in the field of power application (single-phase PV inverter) where the new GaN semiconductors will be evaluated regarding performance and robustness under lab conditions. A special focus will be on power device cooling, thermal management, EMI, PCB parasitics and heat dissipation.

Key Contribution

Functional verification of a fully GaN PV inverter demonstrator (single phase, 10 kW for residential sector). Performance and robustness evaluation of new GaN semiconductors for PV inverters. Identification and analysis of upcoming changes in load situations of PV inverters and investigation in damage sensitive system parameter (e.g. via statistical methods).