The luminous intensity of a light emitting diode a with beam angle of 20° is comparable to a 20 Watts bulb, although the power consumption amounts to only a fraction. The luminous efficiency - i.e. the relationship between light-current and power consumption - is about twice as high with LEDs as high with halogen lamps and more than three times as high compared with general lighting service lamps. This applies in particular to colored LEDs, since the colors are original and are not produced by filters as with bulbs. Thus, a solar plant of 75 Watts for example is sufficient to operate enough LuzLicht lamps to illuminate 8 rooms of a mountain hut in Davos/Switzerland.

Contrary to conventional shining means, with which thin metallic spirals are made to glow, the light generation of LEDs is based on electrical luminescence. There are no mobile parts (anode and cathode are firmly cast in) and no thermal pollution. This makes light emitting diodes interesting for the employment on ships, in motor vehicles, bicycles, flashlights etc., thus for tasks involving vibrations but not allowing higher temperatures.

With 50,000 hours, i.e. nearly 6 years, the life span of light emitting diodes is about 25 times higher than of glowing or halogen bulbs.