Mr. Maurice Buckley:

We have fairly extreme measures in place for new buildings, the nearly zero energy building, NZEB, and deep retrofit. There are 60% to 70% savings when we can do that. It is very reassuring and means that the situation will get better not worse. The problem is we have in the region of 500 or 600 buildings being used as office space. To deep retrofit all of those would cost a phenomenal sum of money. The Government would have to decide whether to prioritise whatever investment is available for those buildings or to spend it in other areas, such as transport or agriculture where the impact on climate might be more effective. We will do our part for sure and we will progressively address the older buildings. The reason they are predominantly C and D rated is that many of the Government buildings were built at the foundation of the State, 100 years ago. They are historic buildings and were not built to a high energy retention standard and it is difficult to get in and do retrofit works. Mr. O'Connor and Mr. O'Sullivan can probably comment in more detail on that.