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DISPLAY ENERGY CERTIFICATES (DECs)

We Offer Professional DEC Assessments for Public Buildings. Helping public authorities understand and display the operational energy performance of their buildings. Kings Energy Hub provides professional Display Energy Certificate assessments for qualifying buildings across East Midlands, Cambridgeshire and surrounding areas.

WHAT IS A DEC ?

A Display Energy Certificate (DEC) shows the operational energy performance of a building based on its actual energy consumption. Unlike an EPC, which is primarily an assessment of the building's theoretical energy performance, a DEC reflects the building's actual energy use during occupation. The certificate gives the building an operational rating from, A — Most efficient to G — Least efficient The rating is calculated using the building's energy consumption and is compared against a benchmark for similar types of buildings. A Recommendation Report (RR) accompanies the DEC, highlighting cost-effective measures to improve the buildings energy performance. Both documents MUST be displayed in public buildings.

BUILDINGS BETWEEN

250m2 - 999m2 ​

DEC - 10 Years

RR - 7 Years​

BUILDINGS OVER

1,000m2 ​

DEC - 1 Years

RR - 7 Years​

DEC Process

WHO NEEDS A DEC ?

PUBLIC AUTHORITY​

​

Local Authority buildings

Council Facilities

Schools and Colleges

NHS Buildings

Leisure Facilities

All Qualifying public-sector buildings​

A BUILIDING THAT IS FREQUENTLY VISITED BY THE PUBLIC​​

​

  The Building is often visited by members of the public.

​

A PUBLIC BUILDING OVER 250m2​​

​

The Public Building has a total useful floor area of more than 250 square meters

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IF ALL THREE CONDITIONS APPLY THE BUILDING MAY FALL WITHIN THE DEC and RR REQUIREMENTS​​

Please get in Contact if you are uncertain and need clarification​

DEC V EPC

A DEC is not simply another type of EPC. It measures operational performance using actual energy consumption data, here is the Difference between the 2

EPC

  • Measures the building's energy performance using an asset rating

  • Primarily based on the characteristics of the building and its services

  • Commonly associated with sale, rent or construction

  • Used for many domestic and commercial buildings

  • Rating from A–G​

DEC or EPC

DEC

​

  • Shows the building's operational energy performance

  • Based on actual energy consumption

  • Primarily applies to qualifying public buildings

  • Operational rating from A–G

  • Used for qualifying buildings occupied by public authorities

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WHAT INFORMATION IS NEEDED TO COMPLETE A DEC AND WHAT IS THE PROCESS?

INFORMATION THAT CAN BE EMAILED OVER​​​​​

ENERGY CONSUMPTION FOR A REQUESTED 12 MONTH PERIOD​

 

​This may include Electricity Consumption, Gas Consumption, Oil Consumption, Solid Fuel Consumption, On-site Generation that's produced

​

INFORMATION THAT IS OBTAINED FROM SITE VISIT​​​​​

BUILDING INFORMATION

 

​This may include Building floor area, Building Type, Occupancy and Relevant Building Characteristics.

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METER INFORMATION

 

This may include Electricity Meter and Gas Meter

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NEW INSTRUCTIONS, ALL BUILDINGS NEEDING A RR and BUILDINGS NEEDING A DEC  UNDER 999m2​

​​

​​

A site visit would be required and the relevant energy consumption data would need to be sent over.​

BUILDINGS OVER 1000m2 NEEDING A RENEWAL​

​​

​​

Just the energy consumption data  would need sending. If nothing has changed within the building over the last 12 months a simple headed letter explaining this removes the need to do another site visit.​

7,000+

assessments completed

16 years

of experience

ECMK and Elmhurst
 

accredited assessor

Fixed prices

confirmed before you book

OUR DEC AND RR SERVICE

Kings Energy Hub can help qualifying organisations with the DEC and RR process from the initial information gathering through to the production and lodging of the certificate.

NEW INSTRUCTIONS​​

BUILDINGS 250m2 - 999m2​​

DEC

RR

DEC & RR

£199.00 per Building

£125.00 per Building

£299.00 per Building

BUILDINGS over 1,000M2​​

DEC

RR

DEC & RR

£199.00 per Building

£125.00 per Building

£299.00 per Building

10% DISCOUNT GIVEN FOR SITES WITH MULTIPLE BUILDINGS

​​​

Building information assessment

Review of energy consumption information

Operational rating calculation

DEC production

Advisory Report

Certificate lodgement

Digital certificate provided

​

OUR SEVICES INCLUDES

EXISTING CUSTOMERS

BUILDINGS 250m2 - 999m2​​

DEC

RR

DEC & RR

£169.00 per Building

£119.00 per Building

£219.00 per Building

BUILDINGS over 1,000M2​​

DEC 

RR

DEC & RR

£129.00 per Building

£99.00 per Building

£199.00 per Building

10% DISCOUNT GIVEN FOR SITES WITH MULTIPLE BUILDINGS

Book your assessment

Tell us what you need and we'll reply with the exact cost, timescale and process.

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Kings Energy Hub

Accredited with ECMK and Elmhurst Energy. Domestic EPCs, Commercial EPCs, Display Energy Certificates and retrofit services across Melton Mowbray, the East Midlands and Cambridgeshire.

© 2026 Kings Energy Hub. All rights reserved.

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