Energy performance certificates (EPCs) are a rating scheme to summarise the energy efficiency of buildings in the European Union. The building is given a rating between A (Very efficient) - G (Inefficient), the EPC will also include tips the most cost effective ways to improve your homes energy rating.

Display Energy Certificates (DECs) are records of the actual energy usage of public buildings, introduced by a number of European governments in response to the EU Energy Performance of Buildings Directive, which all EU member states had to implement by January 2009. DECs are designed to increase transparency about the energy efficiency of public buildings. The certificate looks similar to the energy labels provided on new cars and electrical appliances such as fridges and freezers – it uses a similar scale for energy efficiency, i.e. from A to G with A being the most efficient and G the least. The aim of the Energy Performance of Buildings Directive is for the public to receive energy information about a building they are visiting.