Energy Performance Certificates (EPCs) give information on the energy performance of a building in a sliding scale from A (very efficient) to G (least efficient). This enables potential buyers, tenants or building occupiers to consider a building's energy efficiency and typical energy costs before making a commitment to the contract. It also gives suggestions of how to reduce the energy usage of that building. Further information is required for buildings that are 'Green Deal' buildings.
All buildings constructed, sold or rented require an EPC (subject to the listed exemptions below) and certain public buildings are required to display information about their energy consumption.