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Letter that shows the energyefficiency class for a given indicator (eg energy consumption). Energy ratingscale is based on the value of the indicator for the building, the indicatorvalue for the building object and the dispersion of the indicator for thereference population. In new buildings the scale comprises, in order fromhighest to lowest in efficiency, grades or classes A, B, C, D and E, extendingto the F and G for existing buildings.