There is a large variety of lamps, each used for different applications. The most common families are described below in terms of performance, applications, power range, colour temperature, colour rendering index (CRI), luminous efficacy and lifetime. Energy-efficient alternatives are identified by 

List per family
List per type of application
 

	Incandescent Lamps (definition)     Tungsten Standard Lamps (definition)          General Lighting Service          Reflector     Tungsten Halogen Lamps (definition)          Line-Voltage          Very-Low Voltage
	Fluorescent Lamps (definition)     Linear Fluorescent Lamps (definition)          38mm-diameter (T12)          26mm-diameter (T8)          16mm-diameter (T5)     Compact Fluorescent Lamps (definition)          Integral (self-ballasted)          Dedicated (pin-based)     Induction Lamps (definition)          Fitting-based          Self-ballasted
	Other Discharge Lamps (definition)    Metal Halide Lamps     High Pressure Mercury Lamps (definition)          Standard             Blended lamp     High Pressure Sodium Lamps (definition)          Standard          "White sodium”    Low Pressure Sodium Lamps
	Other Lamps    Light-Emitting Diodes    Microwave Lamps