A transport project intended to join Dublin's central area with its international airport is projected to cost significantly more than previously estimated, with the lowest figure now standing at €14.4bn (£12.3bn).
This represents a substantial increase from the minimum price tag of €7.16bn (£6.14bn) that was cited in 2022.
The infrastructure, known as the Metrolink, is designed to extend from north of Swords down to Charlemont Street in southern Dublin.
Construction work would create a route spanning 19.4km featuring sixteen stations, with the majority situated beneath the ground surface.
The network aims to facilitate travel between the northern and southern sections of the capital while integrating with existing rail and tram services such as the DART and Luas.
Officials from the Irish Department of Transport previously indicated that trains would operate every three minutes during peak periods, carrying a capacity of 20,000 passengers per hour in each direction.
The proposed system is scheduled to begin service by the early 2030s.
While the project remains in the planning phase, the financial data confirms a more than twofold rise in the minimum estimated expenditure over the last four years.