At an official presentation in Mühldorf, the Mireo Plus H was symbolically added to the SOB fleet. Test and training runs are currently underway. Starting in December 2026, three hydrogen-powered trains are scheduled to enter regular service on the Mühldorf–Burghausen route.
The Mireo Plus H trains are to be supplied by Siemens Mobility.
Hydrogen-powered train reaches speeds of up to 160 km/h
The train model is designed primarily for non-electrified routes and as an alternative to diesel. It is based on the Mireo regional train platform from Siemens Mobility. The hydrogen train is powered by two roof-mounted fuel cells and a lithium-ion battery. On a single tank of fuel, it has a range of between 1,000 and 1,200 kilometers.
The Mireo Plus H has a drive power of 1.7 MW. This enables it to accelerate at up to 1.1 m/s² and reach a top speed of 160 km/h. Compared to hydrogen trains from other manufacturers, Siemens’ hydrogen train also has the lowest life-cycle costs.
New Hydrogen Refueling Station Supplies Mireo Plus H
The hydrogen supply will be provided by a newly built refueling station operated by DB Energie GmbH, which runs on green electricity. The project,commissioned by Südostbayernbahn (SOB), is being implemented atthe Mühldorf am Inn train stationin southeastern Upper Bavaria. A hydrogen rail refueling station, complete with an electrolysis plant, is being built (as reported by H2News).
Federal Government Supports Hydrogen Trains and Refueling Infrastructure
According to the company, the trains are being used as part of the “Linienstern Mühldorf 2025+” transportation contract . Bayerische Eisenbahngesellschaft mbH is responsible for planning and financing the project on behalf of the Free State of Bavaria.
The procurement of the three hydrogen trains is being subsidized with a total of 4.4 million euros under the Federal Ministry of Transportation’s directive on “Promoting Alternative Propulsion Systems in Rail Transport.” An additional 3.8 million euros is being provided for the construction of the refueling station infrastructure. Funding for this initiative is provided, among other sources, through the German Recovery and Resilience Plan (DARP) via the European Recovery and Resilience Facility (ARF) under the NextGenerationEU program. The funding guideline is coordinated by NOW GmbH and implemented by the Project Management Agency Jülich (PtJ).
Hydrogen Projects Already Implemented
The initiative builds on DB Energie’s previous projects in the hydrogen sector. For example, as part of the joint project H2goesRail , amobile hydrogen refueling stationforrail transport was developed and subsequentlytested for one year at the company’s innovation hub in Tübingen.
In addition, the company has been operating amobile hydrogen refueling station in Augsburgsince late 2024on behalf of the rail operatorBayerische Regiobahn GmbH.
