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Public DEC

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Display Energy Certificates (DECs) are required buildings (or parts of buildings that have been designed or altered to be used separately) occupied by public authorities and institutions providing public services to a large number of people, where the total useful floor area of the building exceeds 1000m and is frequently visited by the public. See News for future changes to 500m then 250m.

*** News ***

Change in legislation for DECs coming into effect from 9th January 2013. Buildings with total useful floor area of over 500m will require a DEC. For full details click here.

What is a Display Energy Certificate?

A DEC shows the energy performance of a building based on actual energy consumption as recorded annually over periods up to the last three years (the Operational Rating (OR)). The purpose of DECs is to raise public awareness of energy use and to inform visitors to public buildings about the energy use of a building. DECs provide an operational rating of the building from A to G, where A is very efficient and G is the least efficient and is a numerical indicator of the actual annual carbon dioxide emissions from the building.

A DEC is accompanied by an Advisory Report (AR) that contains recommendations for improving the energy performance of the building. ARs are valid for seven years.

Which buildings need a DEC?

A DEC and advisory report are required for buildings with a total useful floor area over 1000m that are occupied in whole or part by public authorities and by institutions providing public services to a large number of persons and therefore frequently visited by those persons.

When is a DEC required?

Occupiers of buildings requiring a DEC will need to display a DEC in a prominent place clearly visible to the public. DECs must be renewed every 12 months. Occupiers must also have in their possession or control a valid Advisory Report.

A local authority can issue a penalty charge of 500 to the occupier for failing to display a DEC at all times in a prominent place clearly visible to the public, and 1000 for failing to possess or have in their control a valid advisory report. Further offences will be committed if the necessary documents are not commissioned.

Who can produce DECs?

Display Energy Certificates and Advisory Reports can only be produced by a qualified and accredited DEC assessor. We are accredited to produce DECs.

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