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Climate Change and Sustainable Energy Bill

My hon. Friend is no doubt aware that the long-term secular trend of fuel prices both in real and relative terms in households has gone down steadily over 20 or 30 years, or more, so although there may be an increase at present, if we accept the argument that there should be an additional effort to offset it, does not he think that if fuel prices were then to go down again, relatively, that would justify reducing that effort? Or does he believe that the market mechanism alone is to be relied on?