Alstom and Eversholt Rail advance UK hydrogen train fleet

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Alstom and Eversholt Rail are moving forward with plans for a dedicated hydrogen-powered train fleet in the United Kingdom, a collaboration that could reshape how regional lines are decarbonised and offer travellers a lower-emission alternative on routes that may not be electrified for years.

From concept trains to a fleet-scale partnership

The partnership between Alstom and rolling stock owner Eversholt Rail on hydrogen technology has been developing for several years. In 2019 the companies first publicised the “Breeze” concept, which involved converting existing Class 321 electric multiple units to run on hydrogen, positioning the trains as a potential near-term option for cleaner regional services.

That early work led to further investment in feasibility studies and engineering, as both companies sought to understand how hydrogen traction could be deployed at scale on the UK network. Reports indicate that the partners invested additional funds in refining the design and assessing infrastructure requirements, including refuelling and maintenance arrangements suited to hydrogen-powered rolling stock.

By November 2021 the collaboration had shifted decisively from retrofit concepts toward a new-build solution. Publicly available information shows that Alstom and Eversholt Rail signed a memorandum of understanding aimed at delivering the UK’s first brand-new hydrogen train fleet, based on Alstom’s Aventra platform and configured as three-car hydrogen multiple units.

The memorandum outlined an initial target of 10 trains, with Alstom responsible for design, build, commissioning and support, and Eversholt Rail positioned as the owner and financier. The partners framed the project as a contribution to UK and Scottish government ambitions to remove diesel-only trains from the network and to decarbonise regional rail by the 2030s.

What the proposed hydrogen fleet will look like

According to technical details released with earlier announcements, the hydrogen fleet would adapt the Aventra family, already widely used in the UK for electric commuter and regional services. The hydrogen multiple units are expected to integrate fuel cells, hydrogen storage tanks and traction batteries into the vehicle design while retaining the performance characteristics required for modern regional operations.

Reports indicate that each three-car train is being developed to match or improve on the acceleration and journey times offered by conventional electric stock, while providing a range sufficient for regional diagrams on non-electrified routes. The hydrogen system is designed so that on-board fuel cells generate electricity, which is then used alongside batteries to power the train, emitting only water vapour at the point of use.

Industry coverage notes that the use of a proven platform such as Aventra is intended to reduce technical risk and streamline certification, maintenance and driver training. At the same time, the introduction of hydrogen-specific components calls for new safety procedures, particularly around high-pressure fuel storage and refuelling operations at depots.

While detailed interior layouts are still evolving, publicly available material suggests that the trains are being designed to offer a similar level of passenger capacity and comfort to contemporary electric units, with features such as air conditioning, real-time passenger information and accessible layouts for travellers with reduced mobility.

Decarbonising non-electrified routes in the UK

The collaboration between Alstom and Eversholt Rail is emerging against a backdrop of wider efforts to cut emissions from Britain’s railways. Many core intercity and commuter corridors are electrified, but large parts of the regional network remain dependent on diesel traction, particularly in rural areas of England, Scotland and Wales.

Government policy documents emphasise that further electrification, where economically justified, remains the primary long-term solution. However, industry analyses also highlight that some lines are unlikely to be wired in the short to medium term, either because of cost constraints or engineering challenges. That has opened a space for alternative traction technologies, including hydrogen and battery-electric trains, to provide lower-emission options.

Hydrogen trains have attracted interest because they can cover longer distances than many current battery-only designs without the need for overhead wires, relying instead on refuelling infrastructure at strategic depots. For regional travellers, this could mean quieter journeys with reduced local air pollution compared with legacy diesel units, particularly on routes serving smaller towns and tourist destinations.

The Alstom and Eversholt Rail project is frequently cited in UK transport commentary as a test case for whether hydrogen can play a meaningful role in the national rail decarbonisation programme. If deployed, the fleet would likely operate on non-electrified regional corridors where passenger volumes and diagrams suit the range and refuelling patterns achievable with hydrogen technology.

Investment, jobs and industrial footprint

In addition to its environmental significance, the hydrogen fleet initiative has an industrial dimension. Alstom’s UK operations, including manufacturing and modernisation facilities, have been promoted as potential beneficiaries of new-build and retrofit work linked to alternative traction technologies.

Previous statements from the company about its hydrogen concepts have highlighted its technology centre in Widnes in north-west England as a candidate site for conversion and assembly activities. Reports also point to Alstom’s wider UK footprint, including facilities for maintenance and overhaul, which could support the long-term servicing of a hydrogen fleet.

Eversholt Rail, now part of Beacon Rail according to industry reports, remains a major rolling stock owner in the UK market, with a portfolio spanning multiple train classes and traction types. Its continued investment in hydrogen studies and pilot projects indicates that leasing companies see potential value in offering low-carbon fleets to train operating companies as franchises and contracts are renewed.

Analysts note that, beyond the trains themselves, the development of a hydrogen ecosystem for rail could stimulate demand for green hydrogen production, storage and distribution in specific regions. This aligns with broader plans in parts of the UK to develop hydrogen hubs that serve both transport and industrial users.

Opportunities and uncertainties for hydrogen rail

While the Alstom and Eversholt Rail partnership signals confidence in hydrogen as a rail technology, the wider market context remains fluid. Across Europe, some regional authorities are reassessing hydrogen projects in light of cost, infrastructure complexity and competition from expanding battery-electric capabilities and accelerated electrification.

Industry commentary notes that hydrogen trains can involve higher upfront costs and require dedicated refuelling facilities, making business cases sensitive to assumptions about fuel prices, utilisation rates and long-term policy support. At the same time, advocates argue that hydrogen may be well suited to specific operating patterns where electrification is not viable and where trains can refuel at a small number of depots.

For travellers, the ultimate impact will depend on how quickly projects move from memoranda of understanding and design phases to signed contracts, construction and entry into service. The initial 10-train fleet envisaged by Alstom and Eversholt Rail would represent an early step, potentially paving the way for larger orders if performance, reliability and cost targets are met.

As the UK rail sector continues to refine its decarbonisation strategy, the Alstom and Eversholt Rail hydrogen initiative is likely to remain a focal point of debate. Its progress will help determine whether hydrogen trains become a niche solution for selected routes or a more significant component of the future rolling stock mix serving Britain’s passengers.