Cardiff is set for a £1.2bn infrastructure injection after the final local authority in the region announced its commitment to the Cardiff Capital City Region devolution deal.
Vale of Glamorgan Council was the 10th council to back the deal, which will be formally signed on St David’s Day on 1 March.
Under the deal, £325m will be committed to the Valley Lines Electrification programme and more than £400m will be allocated to the south-east Wales Metro scheme.
Some £50m will be invested in constructing a new technology centre.
Both the UK and Welsh governments will contribute £500m to the city region deal and the 10 local authorities who make up the CCR cabinet will contribute a minimum of £120m over 20 years.
Four advisory bodies will be created within the cabinet to implement the deal, including a Regional Transport Authority and an Employment and Skills board.
The UK government recommitted to implementing the devolution deal for Cardiff in last year’s Autumn Statement.
Ministers backed a city deal for Swansea Bay City Region and outlined plans for city deals in Scotland.
In addition, £1.8bn of funding was given to Local Enterprise Partnerships in English regions.