WHAT IS A DEC (DISPLAY ENERGY CERTIFICATE)

DEC’s show the actual energy usage of a building, the operational rating and assist the public to see the energy efficiency of a building.

A DEC should be clearly displayed at all times and clearly visible to the public.

DEC’s are only required for buildings with a total useful floor area over 1000 m2 that are occupied by a public authority or institution providing a public service to a large number of persons and visited by those persons.

They are valid for 1 year and the accompanying Advisory Report is valid for 7 years.