Climate Change Bill [HL]

Before we finally leave this subject, I feel that we are in danger of reopening a debate that we have already had. The answers given by the noble Lord are absolutely satisfactory in themselves in that they give us an understanding that these units, while they may each have a different calculation base, in fact all result in the same tonne equivalent of carbon. That is enormously helpful. However, the discussion has also highlighted the fact that these different sorts of units, unless we are very careful, will mean that because of interchangeability we will be able to meet all kinds of targets by preventing or not permitting carbon dioxide emissions to take place in other countries. If the units are tradable, we may be able to meet our targets without reducing our own emissions at all.