The appropriate measures will be different for each building and will depend on a number of factors, including the energy efficiency improvements already undertaken, usage and the characteristics of the building. Measures that generate electricity, as well as energy efficiency measures will be eligible.
Green Deal measures may include (for example) condensing boilers, under-floor heating, cavity wall insulation, draught proofing, water efficient taps and showers and solar photovoltaics, but this list is not likely to be prescriptive.
Domestic Green Deal assessments will be based on a strengthened and improved version of the current energy performance certification scheme (EPC). The Department of Energy and Climate Change (DECC) is reviewing the Standard Assessment Procedure (SAP), which will be applied to the possible measures.
Non-domestic buildings are likely to be more varied than domestic buildings, so the assessment method will be more complex. It will build upon the existing Simplified Building Energy Model methodology for EPC certification. In addition it will allow the actual use of the building to be captured as part of the assessment to produce more accurate predictions of the likely energy savings available.
The Green Deal adviser will draw up a Green Deal Plan, recommending energy saving measures which have been approved for the Green Deal. The criteria for approval of energy saving measures will be set out in secondary legislation during the early part of 2012.