Paschal Donohoe (Dublin Central, Fine Gael) | Oireachtas source

From information that was shared with us by the Department of the Environment, Climate and Communications. We have developed a number of scenarios on what the cost will be and our view is that the upper end of that cost is €1.2 billion. However, it is very difficult to be clear and certain on this. It is the best estimate available to us but it is a figure we will have to continually revise and it is possible the cost will be higher. That is the reason I am taking such great care in not changing the cap that has been placed or making any changes to the scheme before it is open.