Display Energy
Certificates.
DECs show the actual measured energy use of a public building, based on 12 months of meter data. They are mandatory for public-authority buildings over 250m² and must be displayed prominently and renewed on schedule.
Who needs one
Public buildings over 250m²
Any building occupied by a public authority and frequently visited by the public — schools, libraries, leisure centres, council offices, NHS sites — falls within scope of the DEC regulations.
- →Annual DEC required for buildings over 1,000m²
- →10-year DEC for buildings 250–1,000m²
- →Advisory Report valid 7 years (or 10 for smaller buildings)
- →Must be displayed in a prominent location
How we deliver
Single-site DECs
Site survey, meter-data collection, DEC and Advisory Report produced and lodged.
Portfolio management
Scheduled renewals across local authority and NHS estates, with one dashboard and one invoice.
Display-ready artwork
Print-ready DEC artwork in line with display regulations, ready to go on the wall.
Due a DEC renewal?
Send your site list — we'll schedule surveys and lodge certificates ahead of deadline.