<P> From October 2008 all buildings including factories, offices, retail premises and public sector buildings - must have an EPC whenever the building is sold, built or rented . Public buildings in England and Wales (but not Scotland) also require a Display Energy Certificate showing actual energy use, and not just the theoretical energy rating . From January 2009 inspections for air conditioning systems will be introduced . </P> <P> The A to G scale is a linear scale based on two key points defined as follows: </P> <P> a) The zero point on the scale is defined as the performance of the building that has zero net annual CO2 emissions associated with the use of the fixed building services as defined in the Building Regulations . This is equivalent to a Building Emissions Rate (BER) of zero . </P> <P> b) The border between grade B and grade C is set at the Standard Emissions rate (SER) † and given an Asset Rating of 50 . Because the scale is linear, the boundary between grades D and grade E corresponds to a rating of 100 . </P>

Where do you get an energy performance certificate