Display Energy Certificates

Public authorities and institutions that provide public services to a large number of persons, who
occupy space in a building with a total useful floor area greater than 1000m2 and are visited by
the public, must have on show a valid Display Energy Certificate (DEC) at all times and have a
valid advisory report in their possession. (Please note this will be reduced to 250sq meter
and extended to all public buildings in the near future)

A typical Full Survey will take 1 to 3 hours

A DEC shows an operational rating (numerical indicator of the actual annual carbon emissions from the building) which conveys the actual energy used by the building as well as the asset rating (if available by way of an EPC) showing the intrinsic performance of the building.

Only Public authorities or institutions providing Public services (those services traditionally associated with Local or National Government) occupying a building must display a DEC. Other private occupants of the same building are not required to display a DEC

Such buildings are:

These buildings will be required to display the DEC in a prominent place (no smaller than A3 in size is recommended) and should include the operational rating of the building based on actual statistics (utility bills and costing) of the current and previous two years (if available). The DEC basically provides information as to whether the buildings energy performance is improving or not.