Great Western Railway (GWR) has announced a comprehensive three-stage plan to modernize its rolling stock fleet. The initiative is aimed at enhancing efficiency and addressing operational challenges.
Phase One: Deployment of Class 175 DMUs
The first phase involves the deployment of Class 175 diesel multiple units (DMUs). GWR used High-Speed Trains (HSTs) for the last time on December 13, 2023, marking the retirement of the final three short-formed ‘Castle’ sets. This replacement is essential as the Class 175 fleet will alleviate overcrowding on specific routes, including the Barnstaple and Okehampton lines.
Challenges in Introducing Class 175 Units
- The introduction of the Class 175 units has been delayed due to extensive preparation needed after 18 months in storage.
- In the interim, GWR will adjust the deployment of other DMU fleets to ensure adequate train availability.
- Selective door opening capabilities at stations with short platforms will enhance service on North Devon routes.
Phase Two: Battery-Electric Train Initiatives
The medium-term strategy focuses on integrating battery and battery-electric trains into the eastern sections of GWR’s network. Testing has already begun with the unique Class 230, which operates on the West Ealing to Greenford branch, utilizing rapid-charging technology.
Infrastructure Considerations
Successful implementation of battery-electric trains will require significant infrastructure investments. Currently, routes east of Reading and the Reading-Basingstoke service rely on traditional diesel traction.
- GWR anticipates that providing charging capabilities along these routes will enable more sustainable operations.
- This transition may also allow for the reallocation of existing Class 165 DMUs to other areas of the network.
Phase Three: Decarbonization of Services
The final phase of GWR’s plan seeks to decarbonize services throughout the South West. This initiative will retain the Class 150, 158, 165, 166, and 175 units in service for the near future while exploring further sustainable options.
While GWR has laid the groundwork for these transitions, decisions regarding additional trains and their charging methods are yet to be finalized. The government’s policy will likely encourage manufacturers to propose integrated solutions that encompass both rolling stock and their energy supply.
