An EPC is a certificate that shows how energy-efficient your property is. The document includes estimated energy costs, as well as a summary of your home’s energy performance-related features.  EPCs also include recommendations on measures that would make your home more energy-efficient, along with estimated costs for implementing the changes and the potential savings you could make. EPC ratings Your property will be given an energy-efficiency grade between A and G, with A being the best – i.e. most energy-efficient – and G being the worst.