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It is a mandatory government scheme which affects up to 10,000 UK organisations. The scheme has been designed to increase industry’s awareness of energy consumption and to make it easier for businesses to take action, to lower their energy bills and lower the rate of carbon emissions across the UK.   

The ethos behind the scheme is that reducing your energy consumption goes hand in hand with saving you money, so that the costs of the ESOS audit itself are more than paid back, if the identified energy saving measures are implemented. 

These show the actual energy use of a building, the Operational Rating, and help the public see the energy efficiency of a building. A DEC is always accompanied by an Advisory Report that lists cost effective measures to improve the energy rating of the building.

If your building is more than 1000m² then the DEC is only valid for 1 year whilst the advisory report is valid for 7 years.  If your building is between 250m² and 1000m² then both the DEC and advisory report is valid for 10 years.     

DECs are mandatory requirements for buildings with a total floor area over 250m2 which are occupied by a public authority or institution and provide a public service. Despite this, many private sector organisations such as retail units and offices are having Display Energy Certificates produced to demonstrate corporate responsibility on green issues but, most importantly, in order to improve their energy efficiency in order to Save Energy, Cut Carbon and Save Money! 

If you do not have a DEC on display your local authority can issue a penalty notice of £500.00. It is law that any public building must show a valid DEC at all times in a location which is clearly visible to the public. You could also be penalised £1000.00 for failing to possess or hand your local authorities our advisory report. 

Most non-residential buildings when built, leased or sold require an EPC (Energy Performance Certificate) before marketing or letting can commence to meet the Energy Performance of Buildings Directive which must be produced by an accredited Energy Assessor.

The certificate shows the energy rating of a building. It indicates the energy efficiency of the building fabrics and the heating, ventilation, cooling and lighting systems.

The EPC is calculated by analysing a number of physical attributes the property has such as:

• The property’s size and age
• Type of construction materials used
• Its lighting and ventilation
• Any wall or loft Insulation
• The condition of its windows
• Central heating and hot water systems

The Recommendation Report list recommendations selected by the energy assessor for the improvement of the energy performance of the building. The recommendations are listed four headings: short payback, medium payback, long payback, and other measures. Save Energy, Cut Carbon and Save Money!

If you don't have an EPC you will be penalised. The penalties for commercial properties is based on the rateable value of the property up to a maximum cap of £150,000. 

Any domestic property leased, rented or sold will require an EPC before marketing or letting can commence which can only be completed by an accredited Energy Assessor.

The home’s performance is rated in terms of the energy use per square metre of floor area, energy efficiency based on fuel costs and environmental impact based on carbon dioxide (CO2) emissions. A property’s rating will depend on its:

• Age
• Location
• Size
• General condition
• Wall and loft insulation
• Heating and hot water systems
• Ventilation
• Electricity / Lighting
• Presence of any energy generation such as solar panels

Please note: the property’s rating does not take into consideration any home appliances. 

Accredited energy assessors produce EPCs alongside an associated report which suggests improvements to make a building more energy efficient. Save Energy, Cut Carbon and Save Money!

The maximum financial penalty for non-compliance in residential properties is £5,000.