The SAP Calculator version 4 has been certified on the 30/10/13 by the Energy Savings Trust for the lodgement of EPC's to the Scottish register for Energy Performance Certification (EPCs) in Scotland for new Domestic buildings. Sap calculator version for works in conjunction with the BRE accreditation scheme which is approved by the Building Standards Division of the Scottish Government, to operate Energy Performance Certification (EPC) Schemes for New Domestic Buildings in Scotland.