Project Profile: Alstom Coradia iLint Hydrogen Train Network, Germany

The Alstom Coradia iLint project represents a landmark deployment of hydrogen fuel cell-powered passenger trains on non-electrified regional networks, primarily in Germany. This initiative validates fuel cell electric multiple units (FCE-MUs) as a technically mature and commercially viable alternative to legacy diesel fleets. The project’s scope encompasses not only the delivery of rolling stock but also the development of a comprehensive ecosystem for hydrogen refueling and long-term maintenance, establishing a critical blueprint for rail decarbonization.

Technical Specifications

The core of the project is the Alstom Coradia iLint rolling stock, a low-floor multiple-unit train specifically engineered for zero-emission operation. Its propulsion system integrates roof-mounted hydrogen fuel cells with high-pressure (350 bar) composite storage tanks and an underfloor lithium-ion battery pack. The fuel cells convert hydrogen and atmospheric oxygen into electricity to drive the traction motors, with water vapor as the sole emission. The battery system captures surplus energy and power regenerated during braking, providing supplemental power for acceleration and optimizing overall system efficiency. This hybrid configuration allows for an operational range of up to 1,000 kilometers on a single refueling.

A sophisticated Train Control and Management System (TCMS) from Selectron Systems serves as the central nervous system, managing power flow, energy storage, and all vehicle subsystems. Communication is handled via a redundant network architecture utilizing Ethernet, CAN, and MVB protocols. This ensures seamless integration and high reliability. A critical component of the deployment is Alstom’s provision of a turnkey hydrogen infrastructure solution, which includes the installation and operation of dedicated refueling stations, guaranteeing fuel supply and de-risking the transition for rail operators.

Key Takeaways

• Viable Diesel Replacement: The project has successfully demonstrated that hydrogen fuel cell technology is a mature, reliable, and operationally effective solution for decarbonizing non-electrified regional rail lines, directly replacing carbon-intensive diesel multiple units (DMUs).
• Ecosystem-as-a-Service Model: Alstom’s strategy of bundling rolling stock with long-term maintenance contracts and hydrogen refueling infrastructure has been crucial. This integrated approach lowers the barrier to entry for operators and accelerates adoption by addressing the primary logistical challenge of hydrogen supply.
• Supply Chain Maturation: The large-scale deployment of the Coradia iLint has catalyzed the development of a robust European supply chain for critical hydrogen train components, including fuel cells, high-pressure storage tanks, and battery systems, fostering industrial expertise and driving down costs.

FAQ

What is the Alstom Coradia iLint train?

The Alstom Coradia iLint is the world’s first passenger train powered by a hydrogen fuel cell. It generates electricity from hydrogen to power its motors, emitting only water and heat. This zero-emission train is specifically designed to replace diesel fleets on regional railway routes that do not have overhead electric lines.

Where are the hydrogen trains operating in Germany?

The Alstom Coradia iLint hydrogen trains are in service across several German states, with major fleets operating in Lower Saxony, the Rhine-Main region of Hesse, and Bavaria. They serve various regional networks, proving their capability as a clean and efficient alternative to traditional diesel-powered trains on non-electrified lines.