The IES has an active calendar that includes multiple opportunities to network and socialize with industry peers. Browse educational courses as well as various society and section events. To keep abreast with our upcoming events follow the calendar below. To save on fees and learn more about the benefits of membership, click here.
IES Lighting Measurements (LM) 83-23, Approved Method: IES Spatial Daylight Autonomy (sDA) and Annual Sunlight Exposure (ASE) recently underwent significant revisions and ANSI certification. LM-83-23 describes the IES approved method for computing annualized climate-based metrics for daylight sufficiency (sDA) and for excessive sunlight exposure in buildings (ASE). It provides a common reference standard for daylighting […]