Energy Performance Certificate (EPC)

An Energy Performance Certificate (EPC) is a report that assesses the energy efficiency of a property and recommends specific ways in which the efficiency of your property could be improved.

If you do not have a copy of an EPC for your property, you may be able to access a copy online, if one already exists. If you are in England or Wales, you can enter your postcode into the Landmark register. To check whether an EPC already exists for a property in Scotland see the Scottish EPC Register.

An EPC reference number is required as part of the application process for the Domestic RHI. The EPC is used to:

  • determine whether the property can be considered domestic
  • evidence that the required loft and cavity wall insulation measures have been installed.
  • determine the heat demand figure used for the payments calculation for non-metered biomass and heat pump applicants.

The heat demand figure is only included in EPCs for dwellings. A non-domestic EPC would not show this figure and therefore could not be used to work out payments using the deeming methodology.

Your EPC must include a heat demand figure and must be less than 24 months old at the date of application. Your EPC needs to accurately reflect information about your house, so if you have undertaken construction work on your property you may need to get a new EPC to ensure it reflects your circumstances.

If your EPC states that either loft or cavity wall insulation are required you must get an assessor to produce a second EPC after installing the insulation to prove that you have done this. Often your EPC assessor will be able to provide this service, however a list of Domestic Energy assessors is available at Find an energy assessor.