Enter your current annual energy bill and a realistic target band to see an illustrative saving — based on your own numbers, not a fixed national average that goes stale every time energy prices change.
Illustrative estimated annual saving
This is a rough, illustrative estimate based on a general rule of thumb (roughly 8–12% lower energy use per band improved), applied to the bill figure you enter — it is not a calculation specific to this property, and doesn't account for your actual usage patterns, household size, or heating type. Real savings vary. Current EPCs no longer show estimated energy costs directly, so this exists to give a rough sense of scale rather than an exact figure.