SAP Calculations:

The Standard Assessment Procedure (SAP Calculation) is adopted by Government as the UK methodology for calculating the energy performance of new dwellings.

SAP Rating:

The indications of energy performance are energy consumption per unit floor area, an energy cost rating ( the SAP Rating), an environmental impact rating based on CO2 emissions and a Dwelling CO2 Emission Rate (DER).

The SAP Rating is based on energy costs associated with space heating, water heating, ventilation and lightning, less cost savings from energy generation technologies. The SAP rating is expressed on a scale of 1 to 100.