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Insulation: Housing

Volume 493: debated on Monday 1 June 2009

To ask the Secretary of State for Energy and Climate Change how many cavity walls (a) were planned to be insulated under the original illustrative mix of measures outlined under the Carbon Emissions Reduction Target and (b) are expected to be insulated following the changes arising from his Department’s proposals announced on 12 February 2009. (270561)

The illustrative mix (a scenario produced for impact assessment purposes) published alongside the CERT Order, demonstrated that 2.9 million cavities could be insulated by 2011. This has now been revised to a central case (i.e. a mid-range estimate of what suppliers might achieve) of 2.5 million. This is an illustration of what is achievable under CERT, to demonstrate its cost-effectiveness, and is not a plan of measures to be installed, nor an expectation of what suppliers will do. It is based on a variety of factors including our understanding of the energy supply chain. It is at energy suppliers’ discretion which of the eligible measures they promote, with levels of consumer demand a key factor in determining the number of measures installed.