Fluorescent lamp ballasts have an energy efficiency index of at least A1 (BAT) according to Annex III.2.2 and are dimmable.
High intensity discharge lamp ballasts have an efficiency of 88 % (≤ 100 W lamp power) and else 90 % and are dimmable if the sum of lamp powers operated on the same ballast is above 50 W.
Any other types of light source control gear have an efficiency of 88 % (≤ 100 W input power) and else 90 % when measured according to the applicable measurement standards and are dimmable for lamps above total input power 55 W.
The following information is provided on free-access websites and in other forms the manufacturers deem appropriate for light source control gear:
Information on the efficiency of the ballast or the applicable type of light source control gear.