Bosch Commissions Its First In-House Electrolyzer With Hybrion Electrolysis Stacks

Press Release — November 13, 2025

Bosch Group has inaugurated its hydrogen landscape at the Bamberg plant as two in-house Hybrion PEM electrolysis stacks enter real operation, producing hydrogen at scale.

• 2.5-megawatt electrolyzer produces up to 1 metric ton of hydrogen daily
  
• Hydrogen landscape at Bamberg showcases Bosch systems across the H2 value chain
  
• Markus Heyn: "The official start of operations for our electrolyzer and the opening of the hydrogen landscape mark an important milestone for us."
  

Hydrogen is advancing at Bosch: after launching Hybrion PEM electrolysis stacks in March, Bosch has now put two into operation at its Bamberg site. With a total output of 2.5 megawatts, the electrolyzer converts water into hydrogen and oxygen using renewable electricity and meets EU requirements for renewable hydrogen. The new hydrogen landscape demonstrates multiple hydrogen production, storage, and application pathways.

At the heart of the electrolyzer, built by FEST in Goslar, Germany, are two Bosch Hybrion electrolysis stacks manufactured in Bamberg. Each delivers 1.25 megawatts and produces around 23 kilograms of hydrogen per hour. At full load, the electrolyzer produces over 1 metric ton of hydrogen daily—enough fuel for an electric 40-ton truck fitted with a Bosch fuel-cell power module (FCPM) to travel up to 14,000 kilometers.

A Bosch FCPM, equipped with a Bosch fuel-cell stack, operates continuously inside a lifetime container to test durability. Hydrogen produced on-site flows directly to the FCPM via pipeline. The electricity produced by the FCPM feeds back into the electrolyzer for testing and hydrogen generation. Large-scale production of the FCPM began at Bosch’s Stuttgart-Feuerbach plant in mid-2023 and was recently nominated for the German President’s Future Prize.

Bosch also operates a second test station for Hybrion PEM electrolysis stacks at the Bamberg plant to verify performance and efficiency under real operating conditions. Each Hybrion stack undergoes activation before shipment to ensure immediate operational readiness. A 21-meter hydrogen tank stores hydrogen produced by electrolysis at pressures up to 50 bar.

Bosch reached its first electrolysis milestones in 2025. Deliveries have begun to various customers and partners, including Kyros Hydrogen Solutions, Neumann & Esser, Pietro Fiorentini, and its subsidiary Hyter.

About Bosch Group in the Middle East

Bosch Group in the Middle East is a fully owned subsidiary of Robert Bosch GmbH, which has been operating in the Middle East for several decades. The Bosch Group in the Middle East is a supplier of technology services across the Mobility Aftermarket, Power Tools, Home Comfort Group, Building Technologies, Engineering, and Business Solutions, Drive & Control Technology, and Home Appliances business units within the Middle East region. With a total workforce of roughly 501 associates, the company registered revenues of 574 million euros during the year 2024 across 14 markets in the Middle East region.

Mobility is the largest Bosch Group business sector. It generated sales of 55.8 billion euros in 2024, and thus contributed around 62 percent of total sales. This makes the Bosch Group one of the leading mobility suppliers. Bosch Mobility pursues a vision of mobility that is safe, sustainable, and exciting. For its customers, the outcome is integrated mobility solutions. The business sector’s main areas of activity are electrification, software and services, semiconductors and sensors, vehicle computers, advanced driver assistance systems, systems for vehicle dynamics control, repair-shop concepts, as well as technology and services for the automotive aftermarket and fleets. Bosch is synonymous with important automotive innovations, such as electronic engine management, the ESP anti-skid system, and common-rail diesel technology.

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About Bosch Group

The Bosch Group is a leading global supplier of technology and services. It employs roughly 418,000 associates worldwide (as of December 31, 2024). The company generated sales of 90.3 billion euros in 2024. Its operations are divided into four business sectors: Mobility, Industrial Technology, Consumer Goods, and Energy and Building Technology. With its business activities, the company aims to use technology to help shape universal trends such as automation, electrification, digitalization, connectivity, and an orientation to sustainability. In this context, Bosch’s broad diversification across regions and industries strengthens its innovativeness and robustness. Bosch uses its proven expertise in sensor technology, software, and services to offer customers cross-domain solutions from a single source. It also applies its expertise in connectivity and artificial intelligence in order to develop and manufacture user-friendly, sustainable products. With technology that is “Invented for life,” Bosch wants to help improve quality of life and conserve natural resources. The Bosch Group comprises Robert Bosch GmbH and its roughly 490 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. Bosch’s innovative strength is key to the company’s further development. At 136 locations across the globe, Bosch employs some 87,000 associates in research and development.

Additional information is available online at www.bosch-press.com, www.bosch-mobility.com, www.bosch.com.