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Find Efficient Lighting.

Search the DLC Qualified Products Lists (QPLs) to find verified, high performing LED lighting, horticultural LEDs, and control systems that save energy and meet your specific needs.

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About Us
Energy. Quality. Controllability.

The DLC® is an independent non-profit organization that provides decision makers with data and resources on quality lighting, controls, and integrated building systems to reduce energy, carbon, and light pollution. We envision a net zero future where lighting, controls, and integrated building systems enable energy savings, decarbonization, and sustainability for all people and the environment.

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Workplan Timeline
SSL/LED Lighting
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The workplan timeline is a continually-updated implementation plan that provides greater transparency and predictability around DLC development activities and future technical requirements releases.

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Currently Effective
SSL V6.0 & LUNA V2.0 Technical Requirements
SSL Technical Requirements V5.1
LUNA Technical Requirements V1.0
HORT Technical Requirements V4.0
NLC5.1 Technical Requirements
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DLC Policy Archive

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LED Lighting Program

The DLC’s LED Lighting Program is home to the world’s largest verified list of high-performing commercial LED lighting products. Find energy efficient lighting, browse resources related to the QPL or product qualification, and learn how the DLC develops technical requirements that drive the transition to LED lighting.

Program Overview
Technical Requirements
SSL V6.0 & LUNA V2.0 Technical Requirements
Testing Lab Requirements
Surveillance Testing
SSL Technical Requirements V5.1
Product Eligibility
V5.1 Premium Requirements
Qualify a Product
Application Process
SSL V6.0 Manufacturer and Industry Guidance
Level 1 (formerly Single Product) Applications
Level 2 (formerly Family Grouping) Applications
Private Label Applications
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Logo Use Guidelines
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LED/SSL FAQs
SSL V5 Resources
Past Technical Requirements
LUNA Guidance for Manufacturers
Glossary
ANNOUNCEMENTS
Clarifications and Updates for the SSL V6.0 & LUNA V2.0 Technical Requirements
May 14, 2026
Reflecting on 2025, Building in 2026: Advancing the Future of Lighting
February 13, 2026
LUNA

The DLC’s LUNA requirements establish additional performance criteria for outdoor LED lighting that minimizes light pollution so that decision makers can be confident that their selections save energy, improve nighttime visibility, and protect the night.

Overview
Learn
What is LUNA?
Why LUNA?
Turtle Lighting
For Communities and Local Governments
Responsible Lighting at Night Webinars
Seven Strategies to Minimize Negative Effects of Outdoor Light at Night
Outdoor Lighting Ordinances Across North America
Qualify a LUNA Product
Application Process
Level 1 (formerly Single Product) Applications
Level 2 (Formerly Family Grouping) Applications
Private Label Applications
Update Products
Delisting Requests
Application Review Timeframes
Application Fees
Logo Use Guidelines
Luna Guidance for Manufacturers
Technical Requirements
Technical Requirements - SSL V6.0 & LUNA V2.0
LUNA Technical Requirements V1.0
Testing Lab Requirements
Glossary
ANNOUNCEMENTS
Reflecting on 2025, Building in 2026: Advancing the Future of Lighting
February 13, 2026
How the New LUNA V2.0 Technical Requirements Address Light Pollution
December 9, 2025
Horticultural Lighting Program

The DLC’s Horticultural Lighting Program is designed to accelerate widespread adoption of energy-saving LED technology in the horticultural lighting sector. With energy consumption from horticultural facilities continuing to grow, we’re creating tools and resources to position controlled environment agriculture as a leader in energy efficiency.

Program Overview
Technical Requirements
Hort Technical Requirements V4.0
Testing Lab Requirements
Hort Surveillance Testing
Glossary
Qualify a Fixture
Application Process
Level 1 (formerly Single Product) Applications
Level 2 (formerly Family Grouping) Applications
Private Label Applications
Update Fixtures
Delisting Requests
Application Review Timeframes
Logo Use Guidelines
Learn
Transition to V4.0
Hort Lighting Resources
Hort FAQs
Past Technical Requirements
Glossary
ANNOUNCEMENTS
Reflecting on 2025, Building in 2026: Advancing the Future of Lighting
February 13, 2026
DesignLights Consortium Updates its Technical Requirements for LED-Based Horticultural Lighting
March 12, 2025
Networked Lighting Controls Program

The DLC Networked Lighting Controls Program drives the widespread adoption of networked lighting controls in commercial buildings. In partnership with utilities, energy efficiency programs, and the lighting industry, the DLC is promoting this energy saving technology as the gateway to enable connected buildings that support carbon reduction goals.

Program Overview
Technical Requirements
NLC V5.2 Draft 1 Requirements
NLC V5.1 Requirements
NLC V5 Requirements
System Eligibility & Definitions
Glossary
Qualify a System
Application Process
Application Instructions
Dual Applications
Private Label Applications
Update Systems
Review Timeframes & Fees
Logo Use Guidelines
Learn
What's in Development
Case Studies
Research and Reports
NLC-HVAC Integration
NLC FAQs
Past Technical Requirements
Glossary
ANNOUNCEMENTS
Reflecting on 2025, Building in 2026: Advancing the Future of Lighting
February 13, 2026
A Guide to Lighting Control Strategies
July 15, 2025
Resources
The DLC Resource Hub

Commercial lighting is constantly evolving – and it can be hard to keep up. Access the DLC’s cutting-edge industry programming, reports, and research to train your organization on the latest commercial lighting best practices.

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FAQs - SSL Program
Reports and Research
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On-Demand Webinars
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Upcoming Events
News & Events

Latest announcements
NLC V5.2 Technical Requirements: Making Way for Lighting and Thermostat Integrations
June 8, 2026
See All News
Perspectives
NLC V5.2 Technical Requirements: Making Way for Lighting and Thermostat Integrations
June 8, 2026
Reflecting on 2025, Building in 2026: Advancing the Future of Lighting
February 13, 2026
Get Updates
Upcoming Events
Final NLC V5.2 Technical Requirements Explained Webinar
July 8, 2026 3:00 pm
On-Demand Webinars / Past Events
2026 DLC Summit
Join Us
Power in Partnership.

The DLC is a consortium. Whether you are a utility, manufacturer, lighting designer, policy maker, or simply interested in lighting technology – your participation drives our success.

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DLC annual report 2023 — 2023

DLC annual report 2022 — 2022

Annual Report 2020 — 2020

DLC annual report 2021 — 2021

Annual Report 2019 — 2019

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ABOUT US

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