Illuminating Engineering Society

Illuminating Engineering Society The Illuminating Engineering Society of North America (IES) is the recognized technical authority on illumination. IES is almost 8,000 members strong.

For over 100 years; its objective has been to communicate information on all aspects of good lighting practice to its members, to the lighting community, and to consumers, through a variety of programs, publications, and services. IES is a forum for the exchange of ideas and information, and a vehicle for its members' professional development and recognition. Through technical committees, with hun

dreds of qualified individuals from the lighting and user communities, IES correlates research, investigations, and discussions to guide lighting professionals and lay persons via consensus-based lighting recommendations. The Society publishes nearly 100 varied technical publications, and works cooperatively with related organizations on a variety of programs and in the production of jointly published documents and standards. Local IES Sections and many lighting corporations offer formal educational programs on lighting, utilizing material developed by IES. Sections offer programs related to specific applications based on IES standards - seminars on sports and recreational lighting, lighting industrial facilities, roadway lighting, museum lighting, to name a few. Virtually every curriculum devoted to lighting - from beginner to advanced - includes IES educational materials. Its members work with lighting in a variety of capacities - lighting designers, architects, interior designers, government & utility personnel, engineers, contractors, manufacturers, distributors, researchers and educators - throughout the United States, Canada, Mexico - and around the world. They share a common interest in lighting, and a common desire to promote the use of the latest, most innovative lighting technologies, with a focus on judicious use of energy in all lighting applications.

Prepare to take your lighting career to the next level. The IES LC Study Group is designed for those planning to take th...
06/03/2026

Prepare to take your lighting career to the next level. The IES LC Study Group is designed for those planning to take the Lighting Certification (LC) exam by the National Council on Qualifications for the Lighting Professions (NCQLP). Study group sessions start the first week of August.

Visit https://www.ies.org/education/lc-study-group/ to learn more about the study group, the exam, and how to sign up today!

We’ve reviewed what a standard is and how to find it, but who wrote them? Standards (which can often take years to write...
05/28/2026

We’ve reviewed what a standard is and how to find it, but who wrote them?

Standards (which can often take years to write) are written with balanced input from experts who are part of our technical committees, each with their own specialized knowledge.

It's your final chance to save on registration for IES26: The Lighting Conference! Early bird pricing ends Thursday, May...
05/27/2026

It's your final chance to save on registration for IES26: The Lighting Conference! Early bird pricing ends Thursday, May 28 at 11:59pm US Eastern.

Register today at ies.org/ac for the preeminent conference for all things lighting, from research to design to technology and more.

It's the final days to save on your registration for IES26: The Lighting Conference! Save up to 15% on conference regist...
05/21/2026

It's the final days to save on your registration for IES26: The Lighting Conference! Save up to 15% on conference registration through Thursday, May 28. Register today at ies.org/ac

Registration is now OPEN for the 2026 IES Street & Area Lighting Conference in Phoenix, AZ! Enjoy early bird pricing on ...
05/19/2026

Registration is now OPEN for the 2026 IES Street & Area Lighting Conference in Phoenix, AZ! Enjoy early bird pricing on registration through July 15 at ies.org/salc.

Join us for the premier event that brings together decision-makers and their supporting teams from public and private sector utility companies, municipalities, and departments of transport to explore the latest developments, research, and trends in the street and area lighting industry and learn about the implementation of new technologies and solutions that will enable safer, greener, and more resilient lighting systems.

Join us next Thursday, May 28, for "The Art & Science Behind Beautiful Kitchens: Evidence-Based Lighting That Performs" ...
05/18/2026

Join us next Thursday, May 28, for "The Art & Science Behind Beautiful Kitchens: Evidence-Based Lighting That Performs" with Doug S. Walter, AIA, CMKBD. Register at ies.org/webinars

Drawing on more than a decade of research and work with the Illuminating Engineering Society and the National Kitchen & Bath Association, architect Doug Walter, AIA, CMKBD, shares practical, real-world strategies for residential lighting using today’s technologies. Illustrated with award-winning kitchens from across the U.S., this session explores how layered lighting—combined with daylight, thoughtful placement, and emerging products—can dramatically improve both light quality and energy performance.

Happy International Day of Light!Did you miss the Light for Life®: Exploring the Lighting Spectrum? It is now available ...
05/16/2026

Happy International Day of Light!

Did you miss the Light for Life®: Exploring the Lighting Spectrum? It is now available in the archives at https://elearning.ies.org/p/LightForLifeSpectrum!

This eight-hour virtual symposium examined the portion of the electromagnetic spectrum that defines the practice of lighting. From ultraviolet to infrared, sessions explore specific nanometer ranges and their distinct properties, design implications, and biological or environmental effects. Other sessions step back to consider the spectrum more broadly—how it is measured, described, and interpreted in lighting practice, and how IES standards and methods help bring structure to that understanding. Together, these perspectives reveal the spectral complexity underlying what we commonly refer to as white light.

We're excited to announce  to announce that this year’s opening general session will feature a keynote by Elizabeth Hall...
05/13/2026

We're excited to announce to announce that this year’s opening general session will feature a keynote by Elizabeth Hallas, FAIA (Anderson Hallas Architects) and Jon Brooks (AE Design)—
"Our National Parks: Preserving for Future Generations." Save on registration during with early bird pricing, only available through May 28! Register at ies.org/ac.

Since 1916, the National Park Service has inspired millions, offering spaces for discovery, reflection, and connection that span monuments, memorials, museums, lodges, caves, and vast untouched landscapes. But designing within these treasured places is unlike any other challenge. Every decision must balance preservation with progress. Each project carries the responsibility of long-term decision making, shaping not just today’s visitor experience, but that of generations to come.

From projects spanning the array of historic preservation and sensitive ecosystems to evolving visitor amenity expectations, wildfire and flood resilience, remote site logistics, and the protection of cultural and archaeological resources, these environments entail a deep level of thought, care, and creativity. Join us as we explore how thoughtful design, both architectural and lighting, can enhance these extraordinary places. Together, we’ll look at how we can elevate the experience operationally for visitors and families today… and for their children, grandchildren, and generations beyond.

Join us for five PNNL-curated webinars focused on new research results that will drive the next generation of lighting t...
05/12/2026

Join us for five PNNL-curated webinars focused on new research results that will drive the next generation of lighting technology and practice. The new data can be leveraged to increase interoperability, improve the design and commissioning process, and expand our understanding of the role of lighting in maintaining wellbeing for building occupants. Explore how these new insights can improve your own results.

Visit ies.org/webinars to register.

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120 Wall Street
New York, NY
10005

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+12122485000

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