green thinking outside the box



Display Energy Certificate (DEC)
Display Energy Certificates are now required for Public Buildings >500m2. DECs are designed to promote the improvement of the energy performance of public buildings. Display Energy Certificates (DEC) provide a benchmark rating on your building’s energy use by comparison to other similar types of buildings. They raise public awareness and inform visitors to public buildings about the energy use of the building – an energy rating of the building from A to G is displayed on the certificate.

  • All public buildings of 1,000m2 or more occupied by a public authority or an institution that provides public services are required to show the actual energy usage of the building.
  • DECs for buildings of 1000mare valid for 12 months and must be updated annually.
  • All public buildings of 500m2 or more occupied by a public authority or an institution that provides public services are required to show the actual energy usage of the building.
  • DECs for buildings of 500m2 are valid for 10 years and must be updated every 10 years.

Public buildings have to be assessed for their efficiency through the display energy certificate system. These certificates are to be positioned in a prominent position within the building for all visitors to see

  • A Display Energy Certificate (DEC) gives information about the energy usage of a building that is accessed frequently and regularly by the public.
  • Your building will receive an Operational Rating (OR) which relates to its energy usage and CO2 emissions over a period of 12 months.
  • This rating translates to a building category from A to G, with A being the best performing and G being the worst.
  • Along with the DEC you get an advisory report showing how you can improve and reduce your buildings energy usage.This may include improved glazing, changes to lighting, heating and air conditioning systems, etc.

DEC >1000m2 The A3 sized certificate is valid for one year (>1000m2) and is accompanied by an Advisory Report (AR) which is valid for seven years. The advisory report is designed to help building owners /occupiers to improve the energy efficiency of their buildings so that any future DECs, show a better ratings. ARs do not need to be displayed, but must be available. DEC >500m2 The A3 sized certificate is valid for ten years (>500m2) and is accompanied by an Advisory Report (AR) which is also valid for ten years.The penalties for failing to display a DEC where required is currently set at £500 and the penalties for not having an advisory report available is currently set at £1,000.

Non-Domestic Energy Performance Certificates (NDEPC)

Non-Domestic Energy Performance Certificates (NDEPC)

All commercial premises in the UK whether leased, rented or sold outright, require a Commercial Energy Performance Certificate by law. Cubic Apple can supply a Non Domestic Energy Performance Certificate for any commercial property in the UK, offering a professional service at competitive rates. This includes:

  • Offices
  • Shops
  • Industrial units
  • Hotels
  • New build commercial units
  • Rental property
  • Public Institutions
  • Government buildings

The certificate records how energy efficient a building is and will provide an energy rating of the building from A to G, where A is very efficient and G is the least efficient. EPCs are produced using standard methods and assumptions about energy usage so that the energy efficiency of one building can easily be compared with another building of the same type. This allows prospective buyers, tenants, owners, occupiers and purchasers to see information on the energy efficiency and carbon emissions from their building so they can consider energy efficiency and fuel costs as part of their investment. Areas examined include:

  • Building type, size and age
  • Building construction and fabrics
  • Heating, ventilation and cooling systems
  • Hot water and lighting systems
  • Existing energy-saving devices

An EPC is always accompanied by a recommendation report that lists cost effective and other measures (such as low and zero carbon generating systems) to improve the energy rating. Each recommendation is assessed against the potential impact over three payback periods in addition to other measures based on an understanding of the building and indicates whether the impact is High, Medium or Low. * An EPC is required BEFORE a property is placed on the market

Cubic Apple offers these services at highly competitive rates with further reductions for multiple buildings.


(EPA) Energy Performance Analysis ecount

Energy use is becoming more and more of an issue for both the owners and operators of buildings due to many factors including rising and volatile energy costs, complexity of building energy services and Government/ EU policies to name but a few. For many building owners, understanding and managing a single building let alone a portfolio of buildings is difficult enough and while there are many products which aim to micro manage energy use, Cubic Apple Energy Performance Analysis tool eCount aims to provide simple, accurate, concise and easy to interpret information to board level users.

EPA eCount uses established Government systems and standards to gather and present useful and engaging energy usage information to building owners, operators and occupants. It does this in two principal ways:

  1. By providing extended aggregated portfolio information and reports in a succinct and uncomplicated format to managers and dedicated assessors, in order to assist them with strategy, monitoring and reporting. This information has been specifically tailored to be invaluable in supporting many current standards including ESOS, CRC, ISO 14001, ISO 50001, Display Energy Certificates and many other initiatives and requirements.

  1. By providing a headline recognised energy benchmark of a building which rates each individual property against other properties within a national benchmark standard. Consumption and emissions area also provided concisely and in a straightforward manner and presented on in an attractive customizable poster format so that the information may be distributed freely by a business and be easily understood by non-technical people. This functionality has been specifically designed to support engagement (internal and external), Corporate Social Responsibility (CSR) and effective management.

ESOS standard utilising EPA eCount

The preferred measure under ESOS is energy consumption in kWh, but cost is also acceptable and EPA eCount can report on either using conversion factors. However, the EPA eCount standard is multi-dimensional and can integrate and report on a variety of attributes such as building type, location, benchmarks etc. EPA eCount will easily identify poor performing buildings which have good prospects for improvement as well key information on high performing buildings and how they achieve excellence.

The rules used for consumed data and associated methodology mirror those used for Display Energy Certificates (DEC) and are therefore ESOS compliment by using ‘verifiable data’ as its primary source of information which is subject to similar auditing regime.

ESOS has provision to use approved methods to estimate data such as direct comparison, pro-rata and benchmarking which also comply with the requirements of a DEC assessment. All these methods are accommodated in EPA eCount within defined boundaries and can be easily applied by our Lead Assessors.

The flexible nature of EPA eCount enables both the ‘ESOS Participant’ and Cubic Apple ‘Lead Assessors to understand and satisfy the requirements of ESOS through clear headline data and detailed interrogation and reporting tools.

The EPA eCount standard is the way to become ESOS smart with respect to buildings; it is flexible, powerful, reliable informative, compliant and can be used to support ESOS, Corporate Social Responsibility Strategies and help engage staff in saving energy. It is reasonably priced and capitalises on existing well tried and tested DEC Conventions and engages our qualified assessors in the delivering the ESOS requirements for qualifying customers.


For further information contact:

Technical Sales Director Lee Clements

Office: 01827 713 870

Mob: 07766 227 554


Additional Information

For Technical Guidance on DEC or NDEPC, Call or email Lee Clements, Technical Sales Director, Office: 01827 713870 Mobile: 07766 227554.

email: sales@cubicapple.co.uk