Building the South Wales Metro

We've started work on Metro, a modern integrated public transport which will transform the way we travel.

We’re doing a lot of construction, engineering and infrastructure work to do to upgrade our rail network so that it’s ready for Metro. 


  • Electrifying around 170km of track. 
  • Upgrading all our stations and signalling. 
  • Building at least two new stations.


We’re investing three quarters of a billion pounds to upgrade the railway lines to Aberdare, Coryton, Merthyr Tydfil, Rhymney and Treherbert, which is an important part of the South Wales Metro.  These lines are also known as the Core Valleys Lines. 

A number of South Wales Metro projects have been part-funded by the European Regional Development Fund through the Welsh Government. 

We're working with carefully selected partners to deliver this scheme and will be acting with the utmost care and sensitivity to the estimated 50,000 properties within 200m of our railway lines, as well as the environment.  

Metro is scheduled to launch in 2023. 


What progress are we making? 

We’ve already started work on the South Wales Metro, with the construction of our new £100m depot and Metro Control Centre at Taff’s Well, Rhondda Cynon Taff.    

Our Taff’s Well depot will be home to our new Metro trains as well as 400 train crew, 35 maintenance staff and 52 Metro Control Centre staff.