Monitoring lighting

Apparatus comprising:

• a lamp unit adapted to be fitted into a lighting device including a powering device for supplying an electrical power signal to power the lamp unit, the lamp unit comprising at least one light source for emitting illumination to illuminate a space when powered by the electrical power signal, wherein the light source comprises a plurality of individually-controllable LEDs operating according to color information and/or hue information, and the lamp unit further comprising an evaluation module adapted determine an operating status of the lamp unit and a type of the powering device powering the lamp unit based on an analysis of the electrical power signal received at the lamp unit from the powering device;
• and
• at least one processing unit adapted to access a data store storing power consumption data of a plurality of types of powering device under different lamp unit loading conditions, to determine the power consumption of the powering device based on the determined type of the powering device and on an operating status of the lamp unit with reference to the stored power consumption data for the determined powering device type, and to determine a total power consumption of the lighting device as a sum of the determined power consumption of the powering device and the lamp unit, wherein the operating status comprises the color information and/or the hue information,
• wherein the type of powering device is at least one of a manufacturer model, manufacturer series, or a class of powering device,
• wherein said analysis comprises determining at least a frequency of the electrical power signal.