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Energy Bill [Lords]

I thank the Minister for that clarification. When we are talking about energy efficiency in homes, we need to understand just how big the task ahead of us is. The SAP—standard assessment procedure—rating of UK homes went up considerably under the last Labour Government. To be precise, the average SAP rating, which measures the energy efficiency of homes, went up by 11 points between 1996 and 2010—from an average of 42 up to 53. Over the last five years, the SAP rate increase went up one a half times as fast as in the previous five years and the five years before that. That shows how measures such as Warm Front and CERT—carbon emissions reduction target—which are going to disappear when the green deal comes in, were having some success in ensuring that homes were more energy-efficient. In order to get anywhere near the sort of targets that hon. Members have suggested that the Government should consider introducing in an amendment to align energy efficiency with climate change targets—which I hope will happen in Committee—we need to move the SAP ratings much further up over the next few years, perhaps to 70 or more on average at band C by the end of the decade. That means making progress getting on for twice as fast as we have over the last few years. That is the sort of ambition that the Bill needs to encompass. My concern—hon. Members have already mentioned a number of concerns—is that it remains unclear whether that ambition can be achieved under the current mechanism, despite the claims for the efficacy of the green deal.