Calculating the average daylight factor in a room is the most common method of analysing daylight.

The average daylight factor is the average indoor illuminance (from daylight) on the working plane within a room, expressed as a percentage of the simultaneous outdoor illuminance on a horizontal plane under an unobstructed CIE Standard Overcast Sky.

Walker Energy Analysis uses the latest Daysim DIVA4Rhino software and IES Virtual Environment software to calculate the daylight factor. We have a wealth of experience and knowledge of the latest legislation to help your building comply with the regulations and ensure it is well daylit.