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Display Energy Certification

A guide to the requirements for public buildings.



Display Energy Certificates are to be displayed in larger public buildings to help the public understand how energy efficient the building stock is.



The legislation defines that buildings over 1,000 sq m occupied by public authorities or institutions which provide public services, and which are frequently visited by the public, require a Display Energy Certificate.


The Requirements Upon Occupiers

In England and Wales, public buildings require a Display Energy Certificate (DEC). Typical buildings that may be included are schools, leisure facilities, museums, hospitals etc. DECs show the energy performance of a building based on actual energy usage.



The DEC, renewable annually, must be accompanied by an Advisory Report. The Advisory Report is valid for a period of 7 years. The DEC must be displayed in a place accessible to the public, such as a reception area. The penalty for failing to display a DEC is £500 and £1000 for failing to possess a valid Advisory Report.



How to obtain a Display Energy Certificate

To obtain a DEC and Advisory Report, you must employ or contract an Accredited Energy Assessor. The assessor will benchmark your building against published standards and produce a report on measures that could improve the efficiency of your building. The Assessor will lodge your certificate with the central government register and issue you with copies of your DEC and Advisory Report.



We have a team of qualified assessors

We have a team of CIBSE accredited DEC assessors with the ability and experience of both assessing individual buildings and of managing and reporting on larger portfolios.



Our approach to undertaking Display Energy Certificates



Step 1: Information Gathering

The collection and collation of meter readings, floor areas, building linkages, occupancy times and sub-metering data allows the provision of a DEC.



Step 2 : Site Visit

A qualified assessor will visit the site, often accompanied by the Site Manager. They will make an assessment of the controls, active energy management, building fabric, lighting, heating and ventilation equipment and renewable technologies. This information goes to serve the Advisory Report.



Step 3 : Report Generation

The certificate will be lodged with the central government register and your Assessor will provide the following:


  • Display Energy Certificate – An A3 laminated certificate to be displayed in a prominent public place such as reception


  • Advisory Report – The report makes recommendations for improving the energy efficiency of the building

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Display Energy Certificates Brochure

Display Energy Certificates Brochure

Download our guide to Display Energy Certificates in the UK.


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Display Energy Certificates Brochure

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