My Lords, I am very sympathetic to the first three amendments and, to a more restricted extent, the fourth because they cover quite a number of the points that I raised earlier with regard to Amendment 55ZA. In moving his amendment, the noble Lord, Lord Grantchester, pointed out the complexity of the range of topics that come under the slightly blurred title of demand-side reduction and electricity demand reduction. For instance, in Amendment 53B, the idea of having a separate auction for the demand side is very interesting. It is easier to involve classic demand-side reduction into the general auction; on the other hand, it is still rather difficult to see how what one might call permanent demand reduction is included in any normal auction. One may need to look at some other market principle to cover that.
Perhaps I may draw attention to one other aspect of energy demand reduction. At a lunch two or three weeks ago, I learnt about the significant contribution of the work of the voltage management and optimisation industry group. It does a rather specific thing in enabling people to reduce their demand permanently by introducing important technologies. That is done in universities and hospitals, and in quite a number of areas of social housing. I hope that when we are thinking about this general area, we do not overlook that important contribution.