Stadler’s Class 99 breaks new ground

High hauling capability and a top speed of 120kmh

By Cummins Europe, Global Power Technology Leader

diesel electric locomotive

This is the first glimpse in its GB Railfreight livery of the diesel-electric Class 99 locomotive built by Stadler.

Equipped with a compact low-emissions Cummins Stage V QSK50 diesel engine that can run on HVO, the Class 99 heralds a new generation of locomotives, providing a range of economic and environmental benefits.

The Class 99 is built at Stadler’s Valencia works in Spain and adapted for use on the UK railway network. It is based on the proven EURODUAL locomotive concept and features a dual drive system, which means it can operate in purely electric as well as in diesel-electric mode.

“Because it can run on both electrified and non-electrified lines, the Class 99 has the potential to replace diesel-powered locomotives such as the widely used Class 66, where a dual locomotive is required, especially in the UK but also throughout Europe,” said Jorge Santoyo Pastor, Cummins’ Rail and Off Highway Sales Leader for Spain.

The Class 99, which was officially revealed at InnoTrans in Berlin last September, is able to operate on a 25 kV AC electrified line and has a power of 6,000 kW.

With an impressive tractive effort of 500 kN, it can reach speeds of up to 120 km/h, boasting high hauling capability and performance.

Beacon Rail and GB Railfreight have commissioned 30 of these vehicles in an order that is the first of its type in the UK and builds on the success of the EURODUAL six-axle locomotives sold in mainland Europe.

The cab is designed with the driver in mind, and is a safe, modern and comfortable working environment. A centrally positioned seat in combination with the huge front window ensures excellent visibility.

State-of-the-art cameras provide direct views of pantographs, shunting zones and the area in front of the locomotive. The two protection systems required on British rail networks, AWS and TPWS, have been fitted.

Iñigo Parra, Chief Executive Officer of Stadler Valencia, said: “This environmentally friendly, efficient and powerful vehicle will encourage modal shift from road to rail, helping the UK decarbonise the railway and supporting net zero targets.”

John Smith, CEO of GB Railfreight, agreed, adding: "The Class 99s represent a game-changing moment for the UK rail freight industry, improving the resilience of our fleet and reducing journey times. These locomotives will be the first to offer rail freight customers the chance to run wholly sustainable, heavy-haul services the length and breadth of the country.”

Adam Cunliffe, Chief Executive Officer of Beacon Rail, said: " The Class 99 order underlines our drive to support the UK's journey towards a greener and more efficient rail network."

Stadler has a 16-year full service contract with GB Railfreight, comprising tailored maintenance solutions, modernisation and overhaul and the provision of spare parts and material supplies. It covers vehicle repairs and service support, as well as the management of rail data and maintenance software.

After dynamic testing at Stadler’s facility in Velim, Czech Republic, the locomotives will be tested in the UK this summer.

 

For more information on the Cummins engines powering the rail industry, click here:

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This article is part of the 2025 Edition Cummins Europe Magazine, to read more European articles click here: 

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Cummins Europe, Global Power Technology Leader

Cummins Inc. opened its first site in Europe in 1956. Today it has 12 manufacturing sites and more than 10,800 employees in the region. Cummins works hard to provide advanced technologies supported by a long-established service network across Europe. Cummins is committed to investing in Europe through Research and Technology, ensuring Cummins’ technical experts are developing innovations of the future.

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