Standard Assessment Procedure 2009 (SAP)
This is the core guidance to SAP 2009, the UK's Standard Assessment Procedure for the energy rating of dwellings. It contains explanations of all the elements of a domestic energy assessment, the building fabric, services and renewable technologies. This is the technical document published for professionals and it assumes a significant level of understanding. It is aimed at energy assessors and those who employ them, and it is aimed at the supply chain seeking to accredit their technologies for use in the tool.