What is a DEC?
Display Energy Certificates (DECs) show the actual energy usage of a
building, the Operational Rating, and help the public see the energy
efficiency of a building. This is based on the energy consumption of
the building as recorded by gas, electricity and other fuel meters.
The DEC
should be clearly displayed at all times in a prominent place clearly
visible to the public. A DEC is usually accompanied by an Advisory Report
that lists cost effective measures to improve the energy rating of the
building.
Display Energy Certificates are only required for buildings that are
occupied by a public authority or an institution providing a public service
to a large number of persons with a total useful area greater than
1000m2. Display Energy Certificates are valid for one year. The accompanying
Advisory Report is valid for 7 years.
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