IES Committees

Full descriptions and information on each of these IES committees can be found here.

IES Testing Procedures Committee (TPC): Aaron Feldman participates in working groups to jointly compose, refine, and publish standards relevant to the lighting industry, and utilize these standards in the DLC’s SSL and Hort Technical Requirements to ensure that products submitted for the Qualified Product Lists are tested in accordance with these industry standards and the test reports are used to confidently evaluate product performance against the DLC technical requirements. Standards include:

• ANSI/IES LM-79-19: Optical and Electrical Measurements of Solid State Lighting Products. This standard is the method to obtain reproducible accurate measurements of lighting products for metrics that are pertinent to the characterization of those lighting products (i.e. light output, efficacy, color, distribution) and allows stakeholders to confidently evaluate lighting products on pertinent measurements. The DLC uses LM-79 test results to evaluate product performance against thresholds within our technical requirements. This provides confidence in the accuracy of lighting metrics published on the QPL and that products appropriately meet the DLC technical requirements.
• ANSI/IES TM-15-20: Luminaire Classification System for Outdoor Luminaires. This standard defines a classification system for outdoor fixtures to help characterize light distribution in simple terms and provides an easy method to characterize different zones of light emitted from a luminaire so that lighting professionals and others can evaluate if a product will work well in their application. Metrics defined in this standard (Back Light, Uplight, and Glare, BUG) are published to the QPL for all outdoor products and there is an uplight threshold in the LUNA program. For the SSL program, QPL users can see these values and evaluate if a product will work well in their application. For the LUNA program, users can be confident that fixtures listed have a minimal amount of uplight as defined in the technical requirements and ANSI/IES standard.
• ANSI/IES LM-80-21: Measuring Maintenance of Light Output Characteristics of Solid-State Light Sources. This method is used to measure the output of LEDs over time and gives industry insight into LED performance over time for various lighting metrics such as light output and color. Within the DLC program, it is used directly to evaluate color shift over time, used indirectly as input into ANSI/IES TM-21-21.
• ANSI/IES TM-21-21: Projecting Long-Term Luminous, Photon, and Radiant Flux Maintenance of LED Light Sources – This standard is a method to accurately and consistently estimate how much LEDs will dim over time. This can be critical for lighting installations to help ensure luminaires are putting out the expected light long term, and is used to evaluate product performance against the lumen maintenance thresholds in the technical requirement and ensures that products listed on the QPL meet the threshold values in the technical requirements.
• ANSI/IES LM-98-24: Approved Method: Measuring In-Situ Temperature of Solid-State Lighting Components in Lamps and Luminaires.  This standard is a method to conduct temperature measurements of lighting products and goes beyond UL 1598, which is focused on safety only.  This standard is not currently incorporated into the DLC’s technical requirements, but may be used in the future to reproduce temperature measurements for other purposes such as input to TM-21 or evaluation of specific component lifetimes in luminaires (e.g. LED drivers).

IES Lighting Control Systems Committee: Jason Jeunnette participates in this committee to provide unbiased input on behalf of the DLC’s member efficiency programs, and the standards are used to inform the terms used to describe luminaires and NLCs in the DLC’s technical requirements and control information shown on the QPLs. This committee maintains the following standards:

• ANSI/IES LP-6-20: Lighting Practice: Lighting Control Systems – Properties, Selection, and Specification.
• ANSI/IES RP-42-20: Recommended Practice: Dimming and Control Method Designations.
• ANSI/IES LP-16-22: Lighting Practice: Documenting Control Intent Narratives and Sequences of Operations.

IES Horticultural Lighting Committee: Kasey Holland and Leora Radetsky both participate in this committee. The DLC aligns our educational materials with and generally refer to for giving guidance to growers looking to understand how to approach/understand their lighting needs, such as communicating effects of specific spectral ranges on plant growth/morphology or developing guidance on how to use the QPL to answer lighting essential questions to identify products that meet growers needs. One of our earliest horticultural lighting resources “Hort lighting terms and definitions” was used during the development of RP-45.

IES Color Committee: Kasey Holland participates in this committee and integrate color quality metrics based on TM-30 reporting and thresholds into all of our LED product technical requirements.  Participation also provides opportunities to identify any gaps in the standards that can be addressed by the committee for future revisions.

IES Computer Committee: The computer committee has developed multiple standards for the reporting of photometric data used in lighting calculation software. These provide a standardized way to communicate complex photometric and spectral data that can be read and analyzed by software. Adrian Martin is an advisory member of this committee and has contributed to the development of updates to the TM-33 standard as well as the draft TM-41, and developed the DLC’s pre-submission tools used by manufacturers when submitting SSL, Hort and LUNA products for qualification to the QPLs – which require ANSI/IES TM-33-18, ANSI/IES LM-63-19, and/or ANSI/IES TM-27-20 data.

Discomfort Glare in Outdoor Nighttime Environments Committee (DGONE): This technical committee is working on a Technical Memorandum for discomfort glare in outdoor nighttime environments and has identified a primary metric of interest and lighting research is underway at PNNL to test this metric’s predictiveness of discomfort glare compared to other metrics. Leora Radetsky is a voting member of the committee and assists with writing TM content on relevant lighting calculations in lighting software, and other content.

Outdoor Nighttime Environments Committee (ONE): Leora is a voting member of this committee. Multiple standards fall under this committee’s purview, including:

ANSI/IES RP-43-22 – Recommended Practice: Lighting exterior applications

ANSI/IES TM-37-20 Technical Memorandum: Description, measurement and estimation of sky glow

ANSI/IES LP-2-20: Lighting Practice: Designing quality lighting for people in outdoor environments

ANSI/IES LP-11-20: Lighting Practice: Environmental considerations for outdoor lighting

ANSI/IES RP-39-19: Recommended Practice: Off-roadway sign luminance

There are multiple task groups convening under this umbrella committee, and Leora is a member of two active task groups:  the TM-15 Task Group which is reviewing the BUG Rating metric and considering successors, and the Lighting Zones Task Group which is refining lighting zones. Leora provides input with regards to illumination engineering calculations, ordinances, bylaws and regulations using BUG Ratings and other deprecated or undefined metrics such as full/cutoff or shielding requirements. Leora also informs the committee of DLC’s specification of associated metrics used in the LUNA and SSL technical requirements, and our research and efforts to standardize non-white light metrics. Once published, the DLC will consider implementing successor or revised metrics to those we use already for SSL and LUNA Technical Requirements, such as BUG Ratings, etc.

IES Illumination Awards Committee: This is not a technical committee but does recognize excellence in lighting application and design.  Liesel Whitney-Schulte participates in this committee to help write submittal guidelines, assist local IES sections, evaluate international submissions, and plan and prepare for the annual Illumination Awards gala event. She and Aaron Feldman have served as judges for several years.

ASABE Committee

ASABE Energy Systems (ES) 310 Ag Lighting Group: Kasey Holland is a part of ES-310 subgroups that work on the developing the following standards – ASABE S640, S642, and S644. Participating in these committees help ensure that the standards address relevant product types are directly incorporated into the DLC Horticultural Lighting technical requirements.

Industry Committees and Working Groups

NEMA C137 Lighting Systems Committee: “develops Standards and specifications for indoor and outdoor lighting systems installed in an application with consideration of human health and comfort, personal security, the physical environment, energy consumption and daylight integration” as well as “compatibility, interchangeability, security of lighting systems, and measurement of energy performance of the lighting system.” Levin Nock, Jason Jeunnette, and Bagwat Mohan participate in various committees on behalf of the DLC and it’s members. Levin was instrumental in recruiting several researchers and energy efficiency program staff to participate as well.

• NEMA/ANSI C137.9 Indoor Networked Lighting Control Systems Configuration Report:  Jason Jeunnette leading the development of this standard which, when completed will be included in the DLC NLC Technical Requirements to show that a system has this capability.  Consistent standards for configuring NLCs will help ensure that systems are set up and perform to meet expectations.
• ANSI C137.5-2021 Lighting Systems – Energy Reporting Requirements For Lighting Devices:  Discussions at a series of DLC Control Summits clarified that DLC members could incentivize NLCs more easily, with higher incentives, if NLC energy reports were readily available and standardized, so the capability of NLC to produce energy reports was added to the NLC technical requirements.  After C137.9 is published, the combination of C137.5 and C137.9 will make energy reports much more standardized—so that NLC manufacturers and efficiency programs can all design their processes to work together more easily.
• NEMA/ANSI C137.11 Configuration Requirements for Networked Lighting Control Systems that Respond to Grid Signals:  The DLC has been exploring the role of lighting in Grid-interactive Efficiency Buildings (GEBs). Levin Nock recognized a need for a supporting standard to help NLCs work with other building systems in a microgrid or a GEB, and presented the idea to the C137 futures group on multiple occasions, which led to a new committee, developing this new standard.

NEMA/ANSI C136 Committee: Standards for Roadway and Area Lighting Equipment. Stuart Berjansky is on this committee.  The standard C136.41 Dimming Control Between an External Locking Type Photocontrol and Ballast or Driver is referenced in the DLC technical requirements.

NEMA/ANSI C78 Committee – Electric Lamp Standards. Leora has recently become involved in working groups developing chromaticity standards addressing non-white light.

• C78.377 working group – This working group is revising the ANSI C78.377-2017 standard by adding 1800K and 2000K nominal and extended quadrangles. The updated standard being developed by working group is informed by the LEUKOS paper Tony Esposito and Leora published in 2023 suggesting specification methods for standardization for non-white light (NWL). Leora is an active member providing input to the revision.  This updated standard will be used by the DLC as part of our future Technical Requirements allowing us accept  1800K and 2000K LED products into our SSL and LUNA Technical Requirements.
• C78.378 working group – This working group is creating a new ANSI C78.378-202X standard defining long wavelength NWL LED sources (such as phosphor converted (pc) amber and direct emission (de) amber) that don’t have chromaticities falling within the 2000K and 1800K quadrangles. Color names and chromaticity metrics will be defines in this standard to differentiate these sources from each other. This working group was informed by the LEUKOS paper Tony Esposito and Leora published in 2023, and Tony and Leora are co-chairs of this working group. This new standard will be used by the DLC as part of our future Technical Requirements allowing us accept pc-amber and de-amber LED products into our SSL and LUNA TRs.

Other Committees and Working Groups

Resource Innovation Institute (RII) Technical Advisory Council –As part of the TAC, Kasey participated in several working groups focused on developing industry best practice guides for actively cooled horticultural lighting products, controls & automation in CEA facilities, and water circularity.

Smart EPD Luminaires PCR Committee: Lifecycle analysis (LCA) of luminaires isn’t a very common practice in North America today, but more manufacturers and organizations are wanting to report lifecycle metrics to support green building initiatives and show that their products are environmentally friendly beyond energy efficiency. There are many barriers to LCA in the lighting world, as the materials that go into lighting products aren’t something that the general population is typically aware of or concerned about. In addition, current LCAs are difficult to compare, as scopes and methods can vary. The PCR (Product Category Rule) that this committee is developing will standardize the LCA process in North America, so that LCAs and their resulting EPDs (environmental product declarations) in accordance with the standard will be more meaningful easy to compare between products. Adrian Martin is providing input on the draft, but the DLC does not take LCA or materials into consideration at this time. By participating in this committee, the DLC is gaining an understanding of the current state of LCA and materials reporting for lighting and can consider how our technical requirements might interact with LCA topics.

National Council on Qualifications for Lighting Professions (NCQLP) Board of Directors. The NCQLP is a non-profit organization founded in 1991 to serve and protect the well-being of the public through effective and efficient lighting practice. Through a peer-review process, the NCQLP establishes the education, experience and examination requirements for baseline certification across the lighting professions. The DLC (formerly as NEEP) has been involved in the NCQLP governance for over 10 years.  Liesel Whitney-Schulte has served on the Board of Directors since 2018.  DLC Staff including Aaron Feldman, Leora Radetsky, Jason Jeunnette and Liesel have obtained this rigorous certification.