Germany’s Hydrogen Trains Link Lower Saxony, Bremerhaven and Cuxhaven

Hydrogen-powered regional trains in northern Germany are drawing renewed attention as a low-emission way to reach the North Sea ports of Bremerhaven and Cuxhaven, with a dedicated fleet of fuel-cell Coradia iLint units now covering the key Lower Saxony corridor between Buxtehude, Bremervörde, Bremerhaven and Cuxhaven.

World’s First Hydrogen Train Fleet in Regular Service

The Lower Saxony network linking Buxtehude, Bremervörde, Bremerhaven and Cuxhaven is widely cited as the first regional line in the world to be operated by an all-hydrogen passenger train fleet. The state transport authority Landesnahverkehrsgesellschaft Niedersachsen (LNVG) ordered 14 Coradia iLint multiple units from Alstom, replacing a pool of diesel sets that previously worked the same route.

The Coradia iLint was developed by Alstom using hydrogen fuel cells to generate onboard electric power for traction, with only water vapor and condensed water emerging from the exhaust according to technical information published by the manufacturer. The design is based on the proven Coradia LINT regional train platform but swaps diesel engines for a fuel cell, buffer batteries and hydrogen storage tanks on the roof.

Regular passenger trials with two pre-series hydrogen units on the Buxtehude Bremervörde Bremerhaven Cuxhaven line began in 2018, before the full fleet was introduced from summer 2022. Coverage from Railway-News and Deutsche Welle describes the network as the first in the world where a complete timetable is operated with hydrogen trains in place of diesel, marking a milestone in alternative traction for non-electrified routes.

Publicly available planning documents from Lower Saxony and local authorities around Cuxhaven note that the 14 hydrogen trains are intended to work the existing Elbe Weser rail network, giving the coastal region a flagship role in Germany’s wider hydrogen strategy.

Connecting Lower Saxony’s Coast: Bremerhaven and Cuxhaven

The hydrogen-operated RB33 regional service, managed by operator EVB on behalf of LNVG, forms the backbone of rail access to the Elbe Weser coastal corridor. The line runs from Buxtehude, south of Hamburg, via Bremervörde and Bremerhaven to the terminus at Cuxhaven, serving both daily commuters and visitors heading for the North Sea.

Information from EVB and regional planning papers shows that around two million passengers a year use the local rail services in the Elbe Weser area, with connections at Bremerhaven and Cuxhaven to Intercity, long distance coach and ferry links. The switch from diesel to hydrogen traction on RB33 means this traffic now moves with far lower direct greenhouse gas emissions on the non electrified sections of the route.

Tourism strategies published by the City of Cuxhaven and the wider region frame rail as an important pillar in sustainable access to the coast. With the hydrogen trains in daily use, visitors reaching seaside destinations such as Cuxhaven’s sandbanks and Bremerhaven’s maritime attractions can now do so on a service that significantly reduces local air pollutants compared with older diesel rolling stock.

Reports also highlight that the coastal corridor provides a showcase for how hydrogen can be integrated into existing regional rail networks without the long lead times and capital expenditure associated with full overhead electrification, a factor that is influencing wider German debates on decarbonizing rural and branch lines.

Hydrogen Supply, Refueling and Operational Challenges

The Lower Saxony hydrogen network relies on a dedicated refueling hub at Bremervörde, built and operated with industrial gas specialist Linde. Technical descriptions from project partners indicate that hydrogen is delivered, stored and dispensed there at high pressure, with capacity designed so that each Coradia iLint can cover up to around 1,000 kilometers on a single fill, equivalent to a full day of regional operations.

The refueling facility was designed to allow future expansion and potential integration with green hydrogen production, although early operations have partly used hydrogen derived from natural gas. Policy documents and industry analyses point out that the overall climate benefits of hydrogen rail depend on shifting to renewable-based hydrogen over time, aligning with Germany’s wider green hydrogen targets.

Operational updates from EVB in 2024 also underline that reliable hydrogen supply is not guaranteed. In September 2024, the operator reported constrained hydrogen availability, which required active management to keep the RB33 timetable running. These reports illustrate that while the trains themselves have performed as intended, fuel production and logistics remain a critical part of the system that can affect service stability.

Project partners have used the experience from Lower Saxony to refine refueling processes and to examine whether onsite electrolysers powered by renewable electricity could eventually replace trucked-in hydrogen. This would further decarbonize the train operations and potentially turn Bremervörde into a local hydrogen hub for other transport modes.

Environmental Impact and Alternatives to Diesel

Industry briefings and European hydrogen mobility reports describe the Coradia iLint fleet in Lower Saxony as a competitive alternative to diesel on non-electrified lines, particularly where passenger volumes and route profiles do not justify the cost of overhead wires. Hydrogen trains avoid direct CO2 and NOx emissions at the point of use, and they run more quietly than traditional diesel multiple units.

Lifecycle assessments cited in policy discussions emphasize that the climate advantage of hydrogen rail grows as the share of renewable electricity in hydrogen production increases. Where electrolysis is powered by wind or solar, total greenhouse gas emissions per passenger-kilometer can be significantly lower than for diesel trains, even after accounting for fuel production and transport.

The Lower Saxony project is often compared with emerging battery-electric multiple units, which are also being tested on German regional lines. Expert commentary in trade publications notes that hydrogen vehicles tend to be better suited to longer rural routes with sparse electrified sections, while battery units may be more efficient on shorter distances with intermittent overhead power. The Buxtehude Bremerhaven Cuxhaven corridor, with its length and largely unelectrified infrastructure, fits the use case that project planners identified for hydrogen traction.

For travelers, the environmental dimension is increasingly a factor in choosing transport. Travel media coverage points out that choosing a hydrogen-powered regional train instead of a car for a trip to Bremerhaven’s harbor district or Cuxhaven’s beaches can substantially cut individual transport emissions, especially when the trains are well used at peak holiday times.

Future Prospects for Hydrogen Rail in Northern Germany

The experience on the Lower Saxony coastal corridor is informing broader rail planning in northern Germany. According to European and regional case studies, the Coradia iLint fleet has demonstrated that hydrogen trains can be integrated into existing scheduling, maintenance and crew processes with relatively modest infrastructure changes focused on fuel supply.

At the same time, recent discussions in industry and academic forums highlight that hydrogen is only one of several pathways for rail decarbonization. Some German regions are expanding full electrification, while others are procuring hybrid or battery trains. Analysts note that lessons from the Buxtehude Bremervörde Bremerhaven Cuxhaven line will help decision makers determine where hydrogen has the strongest long term role.

Local hydrogen initiatives in Cuxhaven and the wider North Sea region also see rail as part of a larger ecosystem that could eventually encompass port operations, heavy road vehicles and industry. Planning documents for a “Hydrogen City Cuxhaven” vision describe rail as an early and visible use case that can build public familiarity with hydrogen technologies and stimulate demand for green hydrogen production capacity along the coast.

For visitors and residents, the ongoing operation of the hydrogen fleet between Lower Saxony’s inland towns and its North Sea ports shows how regional rail can combine everyday mobility with climate goals. As more data emerges on performance, costs and emissions, the line between Buxtehude, Bremerhaven and Cuxhaven is set to remain a reference point in debates about the future of low carbon travel in Germany.