The hon. Gentleman misses the point about the carbon content of ECO and how that is stretched out over the time period. Energy companies can therefore decide that they do not need to undertake the obligation in the way they did previously. That is the crux of the matter and that is why the target has gone down from having 180,000 solid-wall homes by 2015 to having 100,000 by 2017. Even with those changes, it would have been possible to keep that carbon content by not invading the green deal with the changes to the proposals and by having a front-loaded system, which the Department could have worked out.