Siemens Mobility – Mireo Plus B Und Mireo Plus H: New Pathways for Train Design, Trains Powered by Batteries or Hydrogen


Hydrogen Central

Rolling stock manufacturer Siemens Mobility and Niederbarnimer Eisenbahn (NEB) presented the final design of the Mireo Plus, which will enter service on the Heidekrautbahn and East Brandenburg rail networks in December 2024.


Both the exterior and interior design of the high-performance and sustainably conceived train reflect the innovations that went into the climate-friendly hybrid drives as well as the extensive added value provided by the equipment, passenger services, comfort, and convenience. 


Elmar Zeiler, Head of Regional Trains at Siemens Mobility, said:


We are especially pleased that we are manufacturing climate-friendly and sustainable trains powered by hydrogen or batteries for NEB.


“The Mireo Plus B and Mireo Plus H trainsets combine innovation and sustainability on rail routes where electrification with overhead lines is neither possible nor economical. Only by providing a strong rail presence and alternative types of drives will we be able to make a significant contribution to combating climate change.” 


Exterior design


Graphic artist Sebastian Büsching drew on elements of NEB’s corporate design to liven up the “conventional” exterior design of regional trains in a playful way. Rather than displaying continuous stripes or the rigid, symmetrical shapes typically featured on regional trains, the NEB variant for the Mireo works with informally arranged colored flecks that are only remotely reminiscent of the familiar striped look.


Emerging from the solidly colored driver’s cab, blue flecks are increasingly absorbed by light gray flecks moving rearward to the middle of the train. The design is inspired by the idea that regional trains transport passengers virtually around the clock – and the pattern of changing colors symbolizes the transition from night to day.


The horizontal flow of angled, colored flecks reflects the dynamic movement of the train and suggest speed. In effect, the Mireo Plus exterior design symbolizes the coming technological innovations at NEB as well as in the East Brandenburg and Heidekrautbahn networks.




The two-car trainsets are equipped with three doors on each side, and each door is 1.3 meters wide. This generous size and the boarding heights of 600 or 800 mm enable passengers in wheelchairs or with strollers to easily board or exit, even on lower platforms. The doors are framed with yellow and dark blue borders, meeting the technical specifications for interoperability for persons with reduced mobility (TSI-PRM).


Detlef Bröcker, CEO of Niederbarnimer Eisenbahn, said:


A special train deserves a special design.


“The unusual, fresh exterior and interior design of the Mireo Plus stands for a technologically and ecologically renewed railway and an attractive, high-performance regional transport system that operates without CO2 emissions. The Mireo Plus will be a rolling symbol of innovation, climate protection and the transportation transition in Berlin and Brandenburg – showing our home is on the move!”  


Interior design


Routing & multipurpose areas


The interior design of the Mireo Plus for the NEB begins outside the doors: A new type of signage helps speed up passenger flows, especially when there are large numbers of passengers and bicycles. Entry is primarily through the front and rear doors, each leading to one of two multipurpose areas (recognizable by the low-set windows).


Bicycles are channeled to exit through the middle door, avoiding interference with boarding passengers in the front and rear. Large bicycle and wheelchair pictograms outside indicate the direction of the entry doors. Inside, passengers are guided by double arrows along the floor.


Seats & family area


The seat upholstery also incorporates two elements of NEB’s corporate design with its distinctive color scheme and double arrow pattern and reflects the exterior design on the inside. A family area offers a variety of activities for children and information for parents, and features a table embossed with a game.


The Mireo Plus B has 127 seats and standing room for 155 passengers. Both train types provide twelve bicycle spaces and room for two wheelchairs. 


Mireo Plus H and Mireo Plus B: Technological advances for Brandenburg’s regional rail


Both the Mireo Plus H and the Plus B are state-of-the-art trainsets operating with hydrogen or battery hybrid drives. They feature a 1.7-MW powered traction system capable of acceleration of up to 1.1 m/s2 and have a maximum speed of 140 km/h.


The Mireo Plus H and Plus B trainsets are designed to be energy-efficient and environmentally friendly: Their monocoque, welded lightweight aluminum structure, improved aerodynamics, energy-efficient components, and intelligent electrical system management effectively reduce the use of resources as well as emissions.


Thomas Dill, Division Head, Center for Urban Transport and Quality Management, VBB, said: 


A new era is beginning in Berlin and Brandenburg for the East Brandenburg and Heidekrautbahn rail networks.


“We will be seeing the shift from conventional diesel-powered trains to extremely ecofriendly trains. The Heidekrautbahn will even be launching CO2 emission-free operations on non-electrified routes in the Berlin and Brandenburg regional rail transport system. The new train design fits this spirit perfectly.”


NEB ordered a total of 38 Mireo trainsets with alternative and environmentally friendly drives from Siemens Mobility in 2021 and 2022. Beginning in December 2024, 31 battery-powered Mireo Plus B trains will serve in the East Brandenburg network, and seven hydrogen-powered Mireo Plus H trainsets will operate on the Heidekrautbahn.


This will mark the first time that hydrogen-powered trains are used in Brandenburg and Berlin. The switch from diesel to hydrogen and batteries will reduce CO2 emissions by around 14.5 million kilograms a year and save around 5.5 million liters of diesel.


The use of hydrogen-powered trains on the Heidekrautbahn is part of the Heidekrautbahn hydrogen rail system system, a joint scientific pilot project funded by the federal government and the states of Berlin and Brandenburg.


The project is setting up a regional, sustainable hydrogen infrastructure that also includes a hybrid power plant and a tank system. All train operations on the RB27 are to be powered exclusively with renewable, regionally generated green energy.


The project “Use of hydrogen fuel cell drives in local transport in the district of Barnim” is being funded by the federal government as part of the national innovation program for hydrogen and fuel cell technology. The program’s funding is being coordinated by NOW GmbH and implemented by project lead Jülich.   




  • Siemens Mobility and Niederbarnimer Eisenbahn (NEB) present the Mireo Plus B and Plus H train design


  • Exterior and interior break new ground for design and passenger services


  • Fleet of 38 trains to be delivered in the fall of 2024 and enter service on the Heidekrautbahn (RB27) and East Brandenburg networks in December 2024


Source:Hydrogen Central


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