Display Energy Certificates (DEC) & Advisory Reports (AR)
Public authorities must have a DEC for a building if all the following are true:
it’s at least partially occupied by a public authority (e.g. council, leisure centre, college, NHS trust, school)
it has a total floor area of over 250 square metres
it’s frequently visited by the public
What is a DEC?
A DEC compares your buildings energy consumption to the consumption of a building of similar size and use. This is called the Benchmark Building. You are compared against the Benchmark Building on a scale of 1 to 150+, segmented in to A-G ratings. The rating you achieve is termed your ‘Operational Rating (OR)’. An Operational Rating (OR) is a measure of the annual (CO2) emission per unit of area of the building caused by its consumption of energy. If, by comparison, you produce less CO2 per unit of floor area than the Benchmark Building, you are rated below 100. If you produce more, you are rated above 100.
DECs are a visual incentive to encourage occupiers to reduce their CO2 emissions year on year. They show the buildings ratings for the past 3 years. This allows building users and visitors to easily visualise emission trends. If the ratings are increasing each year, occupiers should look to understand why and rectify where possible.
What is an Advisory Report?
The Advisory Report contains bespoke recommendations for improving the energy performance of the building. The Advisory Report may contain a range of possible improvements, including cost effective measures that may be implemented to improve the energy performance of the property.
How long are DECs & Advisory Report Valid for?
For buildings with a total useful floor area more than 1,000 square metres. DECs last for 1 year and Advisory Reports last for 7 years.
Both DECs and Advisory Reports last for 10 years when the total useful floor area is over 250 square metres and up to 1,000 square metres.
What are the potential fines?
You can be fined up to £500 for not displaying a valid DEC and up to £1000 for not having a valid Advisory Report in your possession.