Ms Marie Donnelly:

I think we can do it. I believe we can, and need to, do it. It makes sense. There are possibilities for, for example, Dublin city. It is not just the cities because there are also possibilities for some of the big towns. There is the possibility of capturing surplus heat. It is crazy. The incinerator in Ringsend uses the River Liffey to cool. The surplus heat is just going into the Liffey and out to the sea. Why are we not using that to heat the houses in the locality? Joined-up technology is available to us but, as Senator Higgins mentioned, we need to make the investments now to allow that to happen.