Display Energy Certificates (DECs)

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0800 030 4391

Like the Energy Performance Certificate (EPC) the Display Energy Certificate (DEC) gives a graphical output of a buildings performance that can be compared with similar buildings in the notional stock. However, unlike the EPC, the DEC is an Operational Rating (OR), which gives an indicator of the actual CO₂ emissions from the building. The scale is from A to G, with corresponding numerical indicators of 0 to >150. A building typical of the UK stock for its type would be situated at the D to E rating boundary, with on OR indicator of 100. A building in the A rated bracket with an OR of 0 would have zero CO₂ emissions. An OR score of 200 in the G rated bracket would be emitting twice the typical levels of CO₂

Display Energy Certificates are normally required for public buildings and those occupied by public authorities which have a total useful area greater than 1000m² and provide a public service to a large number of people and are therefore frequently visited by those people (e.g. a school, hospital, government or local authority building). The DEC shows the energy performance of the building as recorded annually over periods up to the last three years. DECs are required to be displayed from 1st October 2008 and must be updated every year. Property and facilities managers who are affected by the legislation are therefore now required to present the relevant data. Logos for various bodies