Marc Ó Cathasaigh (Waterford, Green Party) | Oireachtas source

They stand out as the red properties. When you go out and knock on doors, you find that the message is still not reaching people. I know that there is great work happening, but I guess we need to bed it in more.

I have a simple brass-tacks question. The witnesses probably have ready-made examples so they can change my example. Let us take a three-bedroom E- or F-rated semi-detached house. If we manage to upgrade that to a B1 rating, what is the saving? Where do we go, in terms of energy costs before and after?