- A BER gives an objective scale of comparison for the energy demand and performance of a building.
- It is described as been similar to the efficiency rating given to white goods such as fridges, freezers, and washing machines currently in use in your home.
- The rating is expressed in the form of bands from A to G, 'A' being the most energy efficient to 'G' being the least efficient.
Arising from the Kyoto protocol, the EU has identified the reduction of greenhouse gas emissions as an important objective. The most significant greenhouse gas is carbon dioxide, almost half of the energy related carbon dioxide emissions derive from energy use in buildings.
In 2000, the EU Commission's Action Plan on Energy Efficiency indicated the need for the introduction of specific measures in the building sector, in response the Commission published the Energy Performance of Buildings Directive in May 2001. It was adopted by the European Parliament and Council and on the 4th January 2003 the Directive became European Law. The EU Directive will, when fully implemented in 2009, require a BER to be registered for all buildings.
