Bosch Unveils C100 Fuel-Cell Module for City Buses

Stuttgart and Berlin, Germany –  Robert Bosch GmbH., is presenting a new hydrogen-powered solution for urban mobility at the Mobility Move trade fair in Berlin. The company has unveiled the fuel-cell power module (FCPM) C100, a new version of its fuel-cell unit developed specifically for city buses.

The new system is designed to support climate-friendly and potentially CO₂-free public transport, especially when powered by renewable hydrogen. Bosch says the fuel-cell solution enables fully electric vehicle operation while also helping transport operators meet stricter future emissions requirements.

According to Jan-Oliver Röhrl, Executive Vice President of the Bosch Power Solutions division and Chairman of Bosch’s global commercial vehicle activities, fuel-cell technology is particularly suitable for buses operating on longer daily routes where en-route charging opportunities are limited. Alongside battery-electric buses, fuel-cell electric vehicles are expected to play an important role in reducing transport-related emissions.

Bosch highlighted that new European Union regulations require carbon emissions from newly registered city buses to be cut by 90 percent by 2030 compared to 2019 levels. From 2040, similar requirements will also apply to other bus types. Since the EU recognizes vehicles equipped with fuel-cell power modules as zero-emission vehicles, Bosch sees its new solution as an important contributor to this transition.

The newly introduced FCPM C100 expands Bosch’s fuel-cell portfolio, which now covers a power range from 100 kW to 300 kW. The C100 features a compact, flat design with a height of only 40 centimeters, making it suitable for roof-mounted installation, which is common in the European city bus market. The system is intended for 12- to 18-meter buses and includes standard CAN and diagnostic interfaces for easier integration.

Bosch noted that the C100 is based on the FCPM C190, a version developed for intercity buses and coaches, where the unit is typically mounted at the rear in a layout similar to conventional diesel vehicles. The company plans to begin testing the C190 in demonstration vehicles during the first half of 2026. Completing the lineup is the FCPM C300, which delivers 300 kW of system power and is designed for heavy trucks and coaches.

Beyond vehicle applications, Bosch continues to invest across the entire hydrogen value chain, including production, infrastructure, and end-use technologies. In 2025, the company announced the launch of its Hybrion PEM electrolysis stack for hydrogen production. Bosch is also developing hydrogen engine technologies and offering components for both port and direct injection systems.

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