Due to a high volume of SSL and Hort applications, initial and comprehensive review timeframes are currently extended by 10 days each. Beginning April 11, review priority will be given to applications updating V5.0 products to V5.1, which may also impact review timeframes for all other SSL application types. Click here for more details about SSL application review timeframes, and here for more details about Hort review timeframes. Thank you for your understanding!

Media Center: About the DLC

The DLC is a non-profit organization improving energy efficiency, lighting quality, and the human experience in the built environment. We collaborate with utilities, energy efficiency programs, manufacturers, lighting designers, building owners, and government entities to create rigorous criteria for lighting performance that keeps up with the pace of technology. Together, we’re creating solutions for a better future with better lighting.

Our mission is to achieve energy optimization by enabling controllability with a focus on quality, people, and the environment. The DLC’s many initiatives include three Qualified Products Lists for energy efficient lighting technology: Solid-State Lighting, Networked Lighting Controls (NLC), and Horticultural Lighting. We also offer an extensive library of resources, research, and tools that help accelerate the adoption of energy efficient, quality lighting solutions.

Non-white/Amber Light FAQ

This FAQ document answers questions such as: what are the benefits of non-white light, why are non-white light sources not currently included in the LUNA Technical Requirements, and what are the necessary steps for the DLC to consider including these sources?

Executive Summary: Non-white Light Sources for Nighttime Environments

This executive summary pulls out the most important takeaways from the DLC's whitepaper, "Non-white Light Sources for Nighttime Environments." This summary is designed for those who do not want to dig deep into the science, and includes an overview of current recommendations for NWL sources in outdoor lighting applications and what you need to know about the state of NWL research.

Whitepaper: Non-white Light Sources for Nighttime Environments

The lighting industry needs an integrated approach to solving the unintended negative consequences of light pollution on the natural environment. This whitepaper describes the landscape for part of that solution: non-white light LED sources. Existing lighting standards must be updated to include NWL sources in order for the DLC and other stakeholders to evaluate these products using a consistent framework. The whitepaper outlines the necessary developments required for the DLC to address these types of products in the future.

Upcoming Events & Webinars

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Logo Usage & Guidelines


The DLC Program Logo is intended for use by:
  • DLC Members
    To indicate membership in the DLC Program on DLC Member webpages.
  • Lighting Testing Laboratories
    To indicate available product testing services necessary for manufacturers to submit an application to the DLC QPL. Laboratories must meet the DLC accreditation requirement to display the logo. The DLC Logos and Trademarks may not be displayed in test reports or be used in a manner that implies the DLC endorsement of a laboratory or its services.
  • Other
    Addition use of the DLC Program Logo will be assessed on a case-by-case basis. Please contact info@designlights.org.
Before using the DLC Program Logo, please review the documents below for instructions on proper use.