The Luas light rail system made a profit of €5.6 million last year on the back of more than 26 million passenger trips, the annual report of the Railway Procurement Agency (RPA) shows.
The report published today shows that operating profits have increased from €200,000 in 2005 to €5.6 million. The RPA said that passenger growth was continuing in 2007.
The profits will be invested in developments on the Luas lines, including increased frequency of service. The RPA is working on the extension of the two lines.
It said progress was being made on agreeing the metro link to the airport and the metro west linking the Luas Red line to the airport link.
RPA chief executive Frank Allen said: "The emerging rail network, incorporating new Luas and metro lines is already making a significant contribution to the sustainable development of the greater Dublin area."