The precise amount of carbon dioxide saved under the Community Energy Saving Programme (CESP) by particular measures will not be known until the completion of the reconciliation exercise after the programme ends in 2012. Companies have up until the end of 2012 to deliver schemes and bank the carbon savings needed to meet their obligations under CESP.The latest Ofgem annual CESP report (to December 2010) estimates that the CESP schemes submitted for approval at that point amounted to 7.1 notional MtCO2 (some 36.9% of the total notional CESP target of 19.25 MtCO2), after allowing for adjustments. The report also notes that 81% of CESP scheme proposals include external solid wall insulation and 8% internal wall insulation.