Since July 2015 Display Energy Certificates (DECs) need to be prominently displayed in buildings over 250m2 that are occupied by public authorities or institutions providing a public service. (The threshold was previously 500m2). DECs for buildings between 250m2 - 1000m2 have a 10 year validity as opposed to the 1 year validity for larger buildings.
The operational rating on a DEC illustrates how efficiently the building is using energy. To calculate this rating a Low Carbon Energy Assessor will require information on the:
In addition, to ensure the accompanying Advisory Report provided by your Low Carbon Energy Assessors (LCEA) will provide relevant guidance to assist you in improving your Operational Rating in subsequent years s/he will benefit from the following additional information:
Some newer buildings will have this information to hand, especially if the facilities managers have been maintaining a log book or operations and maintenance manuals (O&M); but often, this information will need to be collected from a variety of documents held with separate departments within the organisation.
CIBSE Low Carbon Energy Assessors (LCEAs) are trained not only to provide you with a display energy certificate but to go further, to provide tailored advice to help you cut the energy costs and carbon emissions in your buildings.
CIBSE LCEAs are trained and certified to provide a high quality professional service; our Energy Assessors are at the forefront of market because they hold the knowledge to make your building more energy efficient...more about LCEAs here
You can find a CIBSE certified DEC Energy Assessor in your area by searching our register of Low Carbon Energy Assessors.
A display energy certificate (DEC) is required annually for public buildings and those occupied by public authorities which have a total useful area greater than 500m2 and provide a public service to a large number of people and are therefore frequently visited by those people. The display energy certificate has been a requirement since 1 October 2008 and shows the actual energy usage of a building. For more detailed information on DECs see the useful documents section below.
Further information on DECs can be found in the downloadable documents below:
Getting Ready for DECs (HM Government)