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environmental impact ratings if all cost-effective measures were installed. An average property is referred to as having an energy efficiency rating E.

The certificate is accompanied by a report which includes cost-effective recommendations to improve the energy ratings. Indicative paybacks are listed for each improvement. In the case of domestic properties indicative paybacks are categorised as:

Lower cost - typically up to £500 Higher cost - typically over £500

Non Domestic EPC Content

Energy performance is shown as a single CO2 based index, again based on a scale of A to G and an asset rating. The non domestic EPC again provides two benchmarks, but in this case the energy rating if the property were newly built and the energy rating if it were typical of the existing stock of similar properties. Cost effective recommendations for non domestic properties are categorised as:

Short term - payback less than three years Medium term - payback between three and seven years Long term - payback more than seven years

Other recommendations are based on the assessor’s knowledge.

Other Information Content Other key pieces of Information are conveyed on EPCs, such as:

Reference information – this includes the unique certificate reference number (as stored in the central register), and the date of issue of the certificate Energy assessor details – this includes the assessor’s name, accreditation number, employer’s name (or any trading name if self employed) and accreditation scheme Information on how to complain or how to confirm that the certificate is genuine – the certificate provides information on how to register a complaint about an unsatisfactory EPC and how to check the certificate is authentic.

Display Energy Certificates

Display energy certificates (DECs) are produced by public authorities and institutions providing public services to large numbers of persons, where they occupy buildings with floor areas greater than 1000m2.

DECs show the energy performance of a building based on actual energy consumption recorded annually over the last three years (where available) in the form of an operational rating (OR). The presence of historic data reveals whether there has been an improvement in a building’s performance. The OR gives a numerical indicator of a building’s CO2 emissions on a scale of A to G. An asset rating may also be shown if an EPC is available.

The building’s performance is compared to a hypothetical building with performance equal to one typical of its type (the benchmark). Typical performance for that type of building would have an OR of 100. A building that resulted in zero CO2 emissions would have an OR of zero, and a building that resulted in twice the typical CO2 emissions would have an operational rating of 200. If the building is a net energy generator, it is still given an operational rating of zero.

EPBD Buildings Platform > P138_EN_UK_October2008

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