What Is A Display Energy Certificate
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What Is a Display Energy Certificate (DEC)?
A Display Energy Certificate (DEC) is an energy performance certificate designed for certain buildings that are required to display an energy rating in a prominent place for public viewing. In simple terms, a DEC helps show how energy-efficient a building is at a glance—supporting transparency for tenants, visitors, and the wider public.
At Propcert.co.uk, we help property professionals and landlords understand the compliance requirements that apply to their buildings. While most UK properties commonly use EPCs (Energy Performance Certificates), some building types follow a different compliance route—where the DEC becomes relevant.
DEC vs EPC: What’s the Difference?
Although they both relate to energy performance, a Display Energy Certificate is not the same as an EPC.
EPC (Energy Performance Certificate): Typically required when a property is built, sold, or rented. It provides an energy efficiency rating based on how the building is expected to perform.
DEC (Display Energy Certificate): Typically required for certain public-facing buildings. It must be displayed publicly and is based on actual energy use data recorded over a defined assessment period.
In other words: EPCs focus on building energy performance at the point of letting or sale, while a DEC focuses on real-world energy consumption for relevant buildings.
Which Buildings Need a Display Energy Certificate?
A DEC is usually required for certain large public buildings and “publicly accessible” spaces. The rules can be specific and depend on building use, size, and other eligibility criteria.
DEC requirements are commonly linked to buildings occupied by public bodies and certain non-domestic properties that are available for public access. If a building meets the threshold and use criteria, it may fall under the DEC display obligations.
Important: DEC regulations are detailed and can change over time. If you are unsure whether your property is in scope, Propcert can help you identify what certification or reporting is likely required as part of your compliance obligations.
How a Display Energy Certificate Is Calculated
Where an EPC is based on standardised assumptions, a Display Energy Certificate is driven by actual energy performance. This usually means the DEC assessment draws on energy consumption data from the building—often including inputs such as:
- metered gas and electricity usage
- heating fuel type and consumption
- building characteristics and operational factors
- time period covered by the assessment
The final DEC is then expressed as an energy rating and supporting details, which must be displayed in accordance with the regulatory requirement.
What Does a Display Energy Certificate Show?
A DEC provides an energy efficiency rating for the building along with related information intended to help people understand how energy use compares to other buildings.
The certificate is typically presented with:
- an energy performance rating
- information about the building and its energy use
- guidance or identifiers associated with the certificate period
The primary purpose is public transparency—showing building energy performance for buildings required to display the DEC.
How Long Does a Display Energy Certificate Last?
A DEC is not simply “one and done.” Display Energy Certificates operate within assessment periods and the certificate must be updated when required by the compliance timetable for the building type.
Because the DEC depends on actual energy use data for defined periods, compliance often involves regular evidence gathering and submission.
For property owners and managing agents, this is one of the key reasons it’s beneficial to use a specialist provider who can guide you through the process and keep turnaround simple.
When Should You Order a DEC?
If your building is in scope for Display Energy Certificates, you should plan ahead—particularly if you need to display or renew a DEC by a specific deadline.
Delays can occur if energy bills, meter readings, or building details aren’t available. Early booking helps ensure:
- your energy data can be reviewed and verified
- certificate preparation is completed promptly
- you can meet display and submission requirements
Propcert.co.uk offers fast turnaround and straightforward booking, which helps organisations stay on top of compliance without unnecessary admin stress.
How to Get a Display Energy Certificate in the UK
Getting a DEC involves confirming eligibility and then preparing the assessment based on the building’s energy usage and relevant details. The usual steps include:
- Confirm the building is in scope for DEC requirements.
- Gather energy data (such as bills, meter readings, and fuel types).
- Provide building information needed for the assessment.
- Have the certificate produced based on the required calculations and reporting.
- Ensure it is displayed as required at the property.
If you manage multiple properties or large estates, having a single compliance partner can significantly reduce workload and help keep standards consistent across sites.
Why Display Energy Certificates Matter
Display Energy Certificates support energy efficiency accountability and transparency. They encourage building owners to understand energy use patterns and improve performance where possible.
Beyond compliance, a DEC can also help with:
- reputational transparency—demonstrating energy performance to stakeholders
- business planning—identifying where energy efficiency upgrades may be needed
- tenant and visitor confidence—showing the building’s energy footprint
Common Questions About Display Energy Certificates
Is a Display Energy Certificate required for every property?
No. DEC requirements are typically limited to certain non-domestic and public-facing buildings that meet regulatory criteria. Many landlords and property owners mainly deal with EPCs rather than DECs.
Can a DEC be used instead of an EPC?
Generally, no. A DEC and an EPC serve different regulatory purposes. An EPC is usually connected to sale or rental, while a DEC relates to display requirements for eligible buildings.
What happens if you don’t display the DEC?
Failing to meet display requirements may lead to compliance issues. The correct action depends on your building’s status and deadlines. If you think your building might be in scope, it’s best to confirm quickly and take the necessary steps.
Need Help With DEC Compliance? Propcert Can Support You
Propcert.co.uk provides a one-stop solution for property certification and safety checks across the UK. We specialise in key compliance documents including EPCs, EICRs, and gas safety certificates—helping landlords, estate agents, and property professionals meet legal obligations with minimal hassle.
If you believe your building may require a Display Energy Certificate, Propcert can help you navigate the process with fast turnaround and straightforward booking—so you can focus on managing properties while staying compliant.
Get a Quote or Book a DEC Assessment
For advice on whether your property needs a Display Energy Certificate and to arrange the next step, contact Propcert.co.uk today. We deliver nationwide coverage and are built for quick, reliable turnaround—ideal for busy property teams.
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