I made it clear when I published the White Paper, and in a statement to the House, that I believe that our intentions to achieve both our climate change objectives and our energy efficiency objectives are achievable, by a massive increase in energy efficiency throughout the economy and by a substantial increase in renewable energy. There is no doubt that it will be tough. That is why we are putting in place not only the renewables obligation but the new carbon emissions trading system, which will be part of the Europe-wide trading system and hugely important in securing these goals. I believe that we can do it. I do not propose to start giving odds on that, and of course we shall keep the situation under review to ascertain whether the policies that we are putting in place are working or whether they need strengthening or changing.