The IES has approved seven new or revised lighting standards:

BSR/IES LP-30
A COMPREHENSIVE GUIDE TO SPECIFYING COLOR RENDITION – CONCEPTS, CRITERIA, AND IMPLELENTATION
This Lighting Practice document provides guidance that bridges the gap between the science and practice of specifying the color rendering ability, i.e., color rendition, of white light sources. It builds upon the specification criteria first included in Annex E of ANSI/IES TM-30-24 IES Method for Evaluating Light Source Color Rendition, providing additional guidance on their application. The goal of this document is to help lighting specifiers understand color rendition considerations for a project and appropriately apply TM-30 metrics at each phase of design.

BSR/IES RP-43
EXTERIOR LIGHTING
This updated standard includes content from ANSI/IES LP-2-20 Lighting Practice: Designing Quality Lighting for People in Outdoor Environments and ANSI/IES LP-11-20 Environmental Considerations for Outdoor Lighting, for one comprehensive standard for exterior lighting. New content will include re-defined Lighting Zones, color, controls and glare metrics.

BSR/IES LP-6
LIGHTING CONTROL SYSTEMS
This updated standard is completely refreshed with new content, including cybersecurity & controls, and identification of “NEBs” (non-energy benefits) such as Spectral tunability, quality considerations, wellness/optimal circadian effects, preservation of design integrity, optimized space zoning, effective lighting equipment maintenance, demand response, reduced light pollution, receptacle control and asset tracking.

BSR/IES LP-8
THE COMMISSIONING PROCESS APPLIED TO LIGHTING AND CONTROL SYSTEMS
This overall revision includes recommendations for commissioning agents on preventative measures, existing building commissioning, new educational graphics, user benefits, new definitions, commissioning documentation matrix, naming conventions (semantic models), case studies, and more.

BSR/IES RP-46
SUPPORTING THE PHYSIOLOGICAL AND BEHAVOIRAL EFFECTS OF LIGHTING IN INTERIOR DAYTIME ENVIROMENTS
This update incorporates Melanopic EDI Exposure Recommendations, as well as some Errata & Addenda content.

BSR/IES RP-27
PHOTOBIOLOGICAL SAFETY FOR LIGHTING SYSTEMS
Updates include new definition (angular subtense), removal of propagation of uncertainty for wavelength accuracy, improvements to measurement metrics, updates to the relative spectral weighting function for Assessing Actinic Radiation Hazard, and new equations for retinal blue light hazard exposure limits.

BSR/IES RP-42
DIMMING AND CONTROL METHOD DESIGNATIONS
Provides standard short designations for easily and uniformly identifying various dimming and control methods. Designers and other specifiers should include this information in luminaire schedules, and manufacturers should use these designations on luminaire, driver, controller, and lamp data sheets.

This revision completely re-organizes the standard. The new document structure is:
– Section 2 provides concepts and terms, such as open vs. proprietary protocols.
– Section 3 provides the table of standard designations, including a short form and a longer description, for example, “LE” Leading Edge, “TE” Trailing Edge, “UPC” Universal Phase Control, etc.
– Annex A provides sample luminaire and control schedules.
– Annex B provides sample information on product data sheets.

IES standards can be viewed and purchased here:
https://store.ies.org/individual-standards/?v=89484b14b36a

Author: David Shiller

Source: https://www.lightnowblog.com/2025/09/7-new-or-revised-ies-standards/