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Energy Efficiency

Obviously, I take on board the hon. Gentleman's comments, and he is an expert in this field, but the key point I made at the beginning of my speech is that energy efficiency has always been the poor relation and that all too often people leap to discuss other, perhaps more sexy, matters such as heat pumps, the renewables heat incentive or renewable energy. While I want a full debate—and, of course, I will answer the hon. Gentleman's questions as best I can—I also want to focus the discussion on energy efficiency, because it is the most important and the best value-for-money consideration in terms of saving carbon.