Not all lights are required to be on at all times, particularly in industry and retail. Consider actual lighting requirements and which lights and lighting equipment should be switched on or off at each stage of the start-up and shut-down procedure.
Many modern buildings have lighting control systems that provide automation and programming of lighting according to time of day, daylight and occupancy. Where these are installed, checks should be made to ensure that lighting is off when it should be. For more information, see Utilise sensors and lighting controls.