Almost all buildings require an EPC certificate on construction, sale or
rent. These certificates aim to give the prospective buyer or tenant an
indication of the energy efficiency of the building; they also provide recommendations
on how it might be improved. Rated from "A" to "G" an
"A" rating building will have lower energy consumption and carbon
emissions than a "G". Active Energy are accredited and licensed
by the Dept of Communities and Local Government (DCLG) to provide Energy
Performance Certificates for all types of domestic and commercial property
and provide advice on low carbon improvement solutions.
A Display Energy Certificate and Advisory Report are required for buildings
with a total useful floor area over 500m2 that are occupied by public authorities
and frequently visited by the public
A Display Energy Certificate shows the energy performance of a building
based on actual energy consumption as recorded annually over periods up
to the last three years (the Operational Rating). The DEC also shows an
Asset Rating for this building if this is available (by way of an EPC).
The Operational Rating (OR) is a numerical indicator of the actual annual
carbon dioxide emissions from the building. The various types of energy
consumption from occupying a building must be brought together on a common
basis so that the performance of one building can be compared with that
of another. The UK has decided that the common unit should be CO2 emissions,
since this is a key driver for energy policy.
This rating is shown on a scale from A to G, where A is the lowest CO2 emissions
(best) and G is the highest CO2 emissions (worst). Also shown are the Operational
Ratings for the previous two years; this provides information on whether
the energy performance of the building is improving or not.