Climate-based Daylighting Metrics
Over the past decade a new family of daylighting metrics to describe and evaluate daylight in spaces have been developed. These metrics summarize the daylight availability over the year and throughout a space. Two prominent daylighting metrics which are calculated by DAYSIM are Daylight Autonomy and Useful Daylight Illuminance.Daylight Autonomy is now being a recommend metrics by the Illuminating Engineering Society of North America (IESNA).