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Energy White Paper

My Lords, my noble friend will have seen an interesting article by the Prime Minister in today’s Times in which he mentioned, among other things, renewables and so on. He set a target about which the noble Baroness, Lady Wilcox, was quite rightly sceptical. The Prime Minister referred to wave power and other things, but he did not refer to tidal energy, although my noble friend mentioned it a moment ago. Can he confirm that it is time to take a very close and earnest look at the Severn barrage, which would provide something like 4 per cent of our electricity and take us a long way towards that target, whether it is achievable or not? I would like to have that confirmation.