An EPC is always accompanied by a recommendation report, which outlines measures such as low and zero carbon generating systems to improve the energy rating of the building. Additionally, the certificate includes information about the potential rating achievable if all recommendations were implemented. EPCs are produced using standardized methods and assumptions about energy usage, enabling easy comparison between buildings of the same type. This empowers prospective buyers, tenants, owners, occupiers, and purchasers to access information on the energy efficiency and CO2 emissions of their building, allowing them to consider energy efficiency and fuel costs in their investment decisions.