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At a glance – Fronius

Solar energy is the future of power generation. As a pioneer in this field, Fronius stands for consistency, reliability, and a long-term vision. For 80 years, the Austrian family-owned company has been setting standards in power electronics: from battery charging systems and innovative welding solutions to solar energy. With more than 7,000 employees worldwide, 1,604 active patents, and 38 international subsidiaries, Fronius is now one of the global players. Fronius develops products and solutions for a sustainable future, including planning and consulting, continuous monitoring, and needs-based repair services.

Projects with Fronius

News

Fronius Argeno: 125 kW power with outstanding flexibility and peak efficiency

Fronius presents the new commercial inverter Argeno: Available in the 125 kW power class, the inverter impresses with a peak efficiency of 99.1 % thanks to modern silicon-carbide technology. Thanks to its installation flexibility — including the option of overdimensioning by up to 200 % — the Fronius Argeno can be individually adapted to the requirements of commercial and industrial PV systems.

Wallbox Inspection: Acclaim for the Fronius Wattpilot Flex Home

At the end of 2025, the Fronius Wattpilot Flex Home was awarded second place in the “Wallbox Inspection” evaluation project carried out by the Fraunhofer Institute for Solar Energy Systems (ISE). Among five tested charging solutions from leading manufacturers, the Wattpilot shined through with its “Made in Austria” quality.

Why Fronius?

Smart technology

Active inverter cooling of the power electronics for extended service life and higher PV yields
High flexibility in string design and configuration options with any PV module technology
Integrated shade management with a central optimizer function to minimize energy losses

European value creation

Production and development have always been rooted in Europe
Sustainable manufacturing with 100 % renewable energy at all Austrian locations
Supporting regional economic value creation

Guaranteed quality

Products designed for long service life and maximum durability
Manufactured to the strictest quality standards, thoroughly tested
Up to 20 years warranty on inverters, backed by a European warranty provider

European data security

All solutions are developed and operated in Europe
User and system data is stored exclusively on European servers
Separated data storage for maximum security

Latest products

Fronius Reserva – the next step towards energy self-sufficiency

The Fronius Reserva is an efficient DC-coupled high-voltage battery for solar energy storage with minimal losses. European data security and fast service ensure maximum reliability.

Thanks to the expandability of the Fronius Reserva, up to 4 batteries can be operated in parallel on a Fronius GEN24 Plus or Fronius Verto Plus inverter – from 6.3 to 15.8 kWh per tower, with a total storage capacity of up to 63 kW.

Link: Product website
Link: Product data sheet

Fronius Verto Plus – efficient energy conversion on a new level

The Fronius Verto Plus is a powerful hybrid inverter (15 to 33.3 kW) that impresses with its flexible application options and maximum efficiency.

Thanks to state-of-the-art power electronics, it provides a reliable backup power supply and optimized energy yield, making it the best choice for complex PV systems and various module types.

Link: Product website
Link: Product data sheet

Fronius Wattpilot Flex – intelligent electromobility at home

With the Wattpilot Flex (11/22 kW charging capacity), Fronius is setting new standards in e-mobility. The charging station enables flexible, cost-efficient, and PV-optimized charging. Users benefit from intelligent functions that optimize the charging process and maximize the self-consumption of solar power.

Link: Product website
Link: Product data sheet

Fronius Argeno: The powerful inverter for commercial photovoltaic projects

The Fronius Argeno in the 125 kW power class impresses with minimal conversion losses thanks to a peak efficiency of 99.1 % achieved through innovative silicon carbide technology. With ten powerful MPP trackers, it optimizes energy yield even across different module orientations and inclinations. Flexible in installation with the option of oversizing by up to 200 %, the Fronius Argeno, produced in Europe, sets new standards for commercial and industrial PV systems.

Link: Product website
Link: Product data sheet