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Display Energy Certificates

Sector: Public
Frequency: DECs for buildings between 250m2 – 1000m2 have a 10-year validity.
DECs for building over 1000m2 have a 1-year validity.

Display Energy Certificates (DECs) were created to demonstrate the energy performance of Buildings occupied by public bodies.

Their purpose was to raise awareness of unnecessary consumption and to encourage energy reduction. Like electrical appliance ratings, buildings are given a rating between A-G, with ‘A’ demonstrating high energy efficiency and ‘G’ low efficiency.

Improve the Energy Efficiency of your building

Taking this compliance requirement one step further, Zenergi can provide a DEC Optimisation Report that identifies potential financial savings for your organisation. Zenergi initially developed this service for the Department of Energy and Climate Change head office building in London, in the process successfully improving their DEC rating from a G to a C. Using the DEC positively in this way could save an average primary school over £3,000 per year, whilst an average secondary school could save in excess of £7,000 per year.

What is the risk of non-compliance?

Failure to display a DEC in a prominent place that is visible to the public at all times can see a penalty of £500 for each breach, and £1,000 for failure to have a valid advisory report if required.

If you choose to act on the report, we have the technical services to advise on funding application routes, as well as providing the business plan.

Energy Performance Certificates

An EPC is required by law on construction, let or sale of a commercial building over over 50m2, with fines applicable for non compliance.

Read more here.


Contact Zenergi today to arrange an audit of your building which can identify energy saving opportunities, reducing expenditure and your business’ carbon footprint.


Key features

Building Assessments

Compliant Energy audit

Cost savings opportunities

Reduced Administration

Learn more

Are you ticking every box for energy compliance? Download our A to Z guide.

Please enter your details below to download

    Related Services

    What are Display Energy Certificates for?

    Read more

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    Part of the Zenergi family

    We are preferred partner and supplier to many associations including ASCL, WASBM, LASBM, BASBM, CAPSA and have been in partnership with some for over a decade. We regularly attend their conferences and give members the Positive Zenergi experience based on their needs.

    Zenergi are also an approved partner with the Institute of School Business Leadership, offering ISBL members the provision of a customer service specialising in energy procurement, invoice validation and contract management.

    We are proud in our unique offering, based around customer service excellence. We audit the suppliers we work with to make sure our customers are getting the best value and service and are pleased to offer OJEU compliant pricing.