Initially, in 1949, the states of the Federal Republic were Baden, Bavaria, Bremen, Hamburg, Hesse, Lower Saxony, North Rhine Westphalia, Rhineland-Palatinate, Schleswig-Holstein, Württemberg-Baden, and Württemberg-Hohenzollern.
Vendar taka žarnica lahko doseže tudi 22 lumnov na Watt, v primerjavi z 17.5 lumni na watt pri klasični svetilki.