l-e-s-s Tutorial: Lighting Auditing

Using Daylight Factor		l-e-s-s
For daylight Factor values in the range 2-5%, savings which can be achieved by better utilisation of daylight may be estimated
First Derive the necessary outdoor iluminance which will be sufficient to provide the required illuminance indoors	Minimum Outdoor Illuminance

	=
	100 x Required Indoor Illuminance
	Daylight Factor

Using Daylight Factor