Cavity wall insulation (CWI), loft insulation, and solid wall insulation (SWI) are all eligible measures under the Carbon Emissions Reduction Target (CERT). To date, the obligated companies have focused primarily on insulation for lofts and wall cavities with only limited promotion of SWI, meaning that a large proportion of easy-to-treat cavities have already been filled or will have been by the end of 2012. The CERT will transition to the new Green Deal and energy company obligation (ECO) at the end of 2012. One of our key priorities for the new schemes will be to facilitate a stronger market for SWI. However, there will still be an important role for CWI and loft insulation under ECO, particularly in supporting uptake for low-income consumers.
We are now considering responses to the recent public consultation on Green Deal and ECO, and consideration of the transition between schemes will be included in the Government's response.