When you are selling or renting a home, you need an Energy Performance Certificate by law. As of October 2008 EPC’s are required whenever a building is built, sold or rented out. The Energy Performance Certificate or EPC describes the Energy Efficiency of a property. The Energy Rating is represented graphically on a scale from A to G. Book my Residential EPC Available to buyers/tenants so they can make informed decisions with regards to space and water heating costs before moving. EPC shows the Environmental Impact of a building in terms of Carbon Dioxide or CO 2 emissions. The average property in the UK is in bands D-E for both ratings. About 40% of UK's energy consumption results from domestic uses - due to lighting, heating, air-conditioning and other household uses. The Energy Performance Certificate will help to reduce this consumption. The EPC will not only give an Energy Rating of a property but also provide recommendations to help improve the energy efficiency. A guide to the possible annual cost savings in fuel bills that could be achieved will included in the report. The Certificate will provide contact details for Energy Savings Trust. Who can help you find out whether you could be eligible for grants or discounts to help carry out these improvements to your home. It will also list simple ways that changes in behaviour can save you energy and money - without the need for any works.