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Metro is a new transport system that will transform the way we travel around the Cardiff Capital Region.

Electrification represents the first step towards achieving the Welsh Government’s vision for a modernised rail infrastructure across Wales.

On 16 July 2012 the Secretary of State for Transport announced the investment priorities for Network Rail to deliver in the next investment period (2014 - 2019). This announcement included electrification of the Great Western Main Line to Swansea and the Valley Lines network.

An electrified rail network is more economical to operate and maintain which will deliver value for money to the taxpayer. Passengers will travel in a more environmentally sustainable way and experience a quieter, faster journey with savings of up to 20% on existing timetables.

Investment in rail infrastructure is non-devolved. 

The Valley Lines Electrification project has been integrated into the Metro programme as the Valley Lines Modernisation scheme.