I very much welcome the new targets, and I think that we all have to do what we can in everything we do; it isn't just down to Government, it's down to every single one of us. The closure of Aberthaw coal-fired power station was the low-hanging fruit. We always knew that it was going to be a big one in terms of reducing our carbon emissions, but that is a relatively straightforward thing to do. We have to take action now so that the heavy lifting is done before 2030 if we are going to meet our zero-carbon 2050 target. The reason, Janet Finch-Saunders, that Wales was the last to declare net zero was to take account of the fact that we had our heritage of heavy industry, including steel, on which the rest of the UK relies. The clean air Act will follow in the next Parliament as long as Welsh Labour is returned as the main party, and it's only been postponed because of COVID.

I want to focus on the need to ensure that all our buildings are net zero, as soon as we can practically manage that. I'm very pleased to read that the Construction Industry Training Board has really thought about this and has advised that we need to create at least 12,000 specialist jobs by 2028 in order to not just build the power stations of the future, which are going to be homes, but also to retrofit all our existing buildings, which are going to still be 80 per cent of our buildings in 2050. Those are very, very important contributions to ensuring that we get where we need to be, but there are other things we need to explore further. I was very surprised in Lord Deben's report of the UK Climate Change Committee to see the very small number of heat pumps that are being used in Wales, which is surprising, simply because there are so many homes not on the grid, and heat pumps provide a really good alternative renewable energy source for buildings in areas that are not on the grid. That's something that we clearly need to develop further.

We are also going to need to legislate to ensure that no new buildings are going to be anything less than net zero. I'm glad to say that Cardiff and Vale health board is really taking this on as one of the things we must do. Certainly, the way in which they developed the Lakeside wing, the Nightingale hospital at the Heath, has all the features we ought to expect from all new buildings. And for those house builders who continue to build to the same old, same old standards, we need to introduce legislation to put a stop to that as soon as we possibly can.