Stadler’s Class 99 set for UK debut following deal with leasing company

Image: Stadler

Stadler on Friday announced a deal for the supply of 30 Class 99 bi-mode  Co′Co′ locomotives adapted to the British gauge and specifications. Beacon Rail Leasing and GB Railfreight (GBRF) will make use of the units.

The Class 99 has both an electric and a diesel operating mode. Its combustion engine meets the European Stage V non-road emission standards. The locomotives can also run on 25 kV AC electrified lines. Its power at wheel is 6,000k kW and has a tractive effort of up to 500 kN.

The Class 99 bi-mode Co’Co’ locomotive is the sister model of the Stadler Eurodual 6-axle, a vehicle that operates in continental Europe. The Class 99 will join the Class 68 diesel-electric locomotive, the Class 88 bi-mode locomotive and the tri-mode Class 93 already in service in the UK.

The newly ordered locomotives will make their UK debut in 2025, Beacon CEO Adam Cunliffe said in comments on the deal, which was the result “of a collaborative approach with our long-standing customer GB Railfreight and manufacturer Stadler.” GBRF ceo John Smith looks forward to using a locomotive “fit for a greener future”.

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Author: Nick Augusteijn

Former Chief Editor of

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