Fronius USA LLC

Fronius USA LLC is a leading provider of advanced solar inverter technology headquartered in Portage, Indiana. As a wholly owned subsidiary of Austria-based Fronius International GmbH—founded in 1945—Fronius USA serves as the North American hub for innovation across three main divisions: Solar Energy, Perfect Welding, and Perfect Charging. The company’s 400,000-square-foot facility supports manufacturing operations as well as research & development initiatives focused on photovoltaic electronics.
Renowned for its robust product lineup—including the SnapINverter series (1.5 kW to 24 kW) and the latest GEN24 string inverter—Fronius delivers high-efficiency power conversion with features such as rapid installation via hinge mounting designs and advanced module-level monitoring capabilities. Their systems are designed to serve diverse markets from small residential rooftops to large commercial installations.
A hallmark offering is free lifetime remote system monitoring through their Solar.web platform—a unique value proposition among inverter manufacturers—which enables real-time performance tracking and intelligent energy management. Recent investments have expanded both production capacity and workforce at their Indiana headquarters while introducing new data center infrastructure to support digital services. Fronius’ commitment to quality engineering has positioned it as an industry leader driving innovation within the U.S. solar sector.