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Department of Energy and Climate Change

I agree with the hon. Gentleman that we need as much diversity as possible, particularly in relation to the CERT—carbon emissions reduction target—scheme. One thing that I discussed with the companies was the diverse range of ways in which they can help people with their heating bills. It is right that we make and encourage the investments involved in this scheme, because that is a sustainable way to reduce people's bills. I know that there are issues to address, particularly in respect of older houses and the kind of technologies that we need to develop. We need to speed up such development and continue to examine it.