1st Class Energy Ltd


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DEC & Compliance

In accordance EPBD (European Performance of Buildings Directive) 2007 legislation:


A DEC must be produced for any public building greater than 1000m² Commercial building greater than this size will run under a voluntary scheme. However, legislation is currently being prepared to extend the mandatory scheme to cover all commercial buildings as well as public buildings over 500m²


What is an DEC?


A DEC or Display Energy Certificate needs to be issued to appropriate buildings in accordance with EPBD.

Consequently, every commercial or public building within this remit will require an annual inspection of

the building and the energy consumption within it.


Each building is assessed will then be provided with a certificate or 'operational rating' of its efficiency

(buildings in Scotland need to provide and display an EPC) As well as obtain an Advisory Report into

the buildings efficiency and possible improvements that can be made


The DEC provides a simple rating of the buildings energy consumption and this is represented upon an easy

to read certificate, in the same way cars and white goods have performance certificates


What do I do with the Certificate?


To Comply fully, each certificate needs to be placed in a prominent place (eg at the front entrance) on clear display showing the operational performance of the building. Each building will be rated between A to G. (A being the most efficient, G the least)


Failure to provide a DEC can result in a hefty fine. Failure to display a DEC (even though the inspection has been completed) can additionally result in a penalty. Additionally a fine of £1,000:00 can be levied if there is a failure to obain an Advisory Report


Why are Display Energy Certificates required?


In an attempt to reduce commercial building emissions, which account for some 20% of CO² emissions in the UK. DEC's have been introduced to highlight the operation efficiency of buildings and their emissions. It is anticipated this will encourage good energy management of buildings


Measurements are provided for each building in Tonnes CO² per Kw/h (of energy consumed) against each metre of usable floor space and shown as CO² Kwh/m²


DEC's need to be conducted annually, attached to the DEC certificate is an Advisory Report for each building. Although actioning the report is not currently mandatory, again Government is looking at ways in future legislation to enforce recommendations generated from the DEC reports.


What do I do with the Advisory Report?


Each DEC, accompanied by an Advisory Report provides recommendations on how the properties energy efficiency can be targeted and improved, together with an indication of the payback period of any enhancements.


The report also identifies those changes that would provide the greatest carbon impact for the building. the certificates are valid for 12 months and the reports are (Currently) valid for seven years, this reporting period looks to be shortened with the anticipated legislation.


What is the aim of the DEC?


Display Energy Certificate or DEC (or EPC in Scotland ) are intended to inform visitors, customers and suppliers about the energy performance of a building they are visiting, display of the certificate means that they can consider energy efficiency as part of their informed choice and assist to identify a companies corporate responsibilities


Buildings are major consumers of energy. The aim is reduce these carbon emissions by first measuring and then improving the buildings energy efficiency and so reducing the carbon footprint of a building. With annual inspections and issue of DEC certificates it is anticipated that building managers will look at ways to improve their buildings rating in a process of continuous improvement


The dimensions threshold looks to be reduced further in 2015 to 250m². Meaning that every (publicly visited) commercial building over this size will require an annual inspection. For more details of forthcoming legislation you can go to the 1st Class Energy link to the CLG website


Who does this currently apply to?

Currently EPBD DEC requirement only applies to:

  • Public buildings (local Authorities & Institutions providing public services)

  • buildings over 1000m²

  • frequently visited by the public

All other commercial buildings are currently operating under a voluntary scheme






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