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!

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DLC Member Program Summaries – Horticultural Lighting

Updated as of: 2/18/22 This list displays which DLC Members provide rebates for horticultural LED lighting. Please visit the program websites for additional detail.

Testing Tightly Packed Arrays of LED Packages

This resource outlines an alternative approach for thermal testing of products with tightly packed LED arrays under SSL Technical Requirements V5.1, and defines circumstances in which it is appropriate to test products using the alternative approach.

Key Takeaways
  • Outlines an alternative approach for thermal testing of products with tightly packed LED arrays.
  • Defines circumstances in which it is appropriate to test products using the alternative approach.
Horticultural Lighting and Spectral Tuning

Horticultural Lighting & Spectral Tuning

This resource answers the following questions: what are spectrally tunable products, what are spectral tuning channels, what is needed in DLC applications for spectrally tunable products, and what is published on the QPL for spectrally tunable products?

Key Takeaways
  • Defines spectrally tunable products and spectral tuning channels.
  • Detail on specific test reports and documentation needed to qualify a spectrally tunable product.
  • Examples of acceptable control narratives for spectrally tunable products.

Horticultural Lighting and Application Design

The application design guide walks the reader through the interrelated considerations of energy flowing through a growing facility.

Key Takeaways
  • Considerations for applying LED-based horticultural light fixtures
  • Facility parameters, Plant requirements, Installation comparison
  • Additional benefits and potential drawbacks

Horticultural Lighting & Ultraviolet Radiation

This guide explains the challenges with attenuated reflection in currently-used whole-fixture measurement methods for horticultural lighting.

Key Takeaways
  • Ultraviolet radiation and its place in horticultural lighting
  • The DLC also recommends that appropriate safety practices always be followed when working with UV-emitting products, and defers to equipment manufacturers and safety organizations as the most knowledgeable parties for how to work with a specific product.

Horticultural Lighting Terms and Definitions

This guide explains the common units of measure one might encounter in the general illumination world, and emphasizes that plant-specific units should be used when working on horticultural applications.

Key Takeaways
  • Introduction of Horticultural and Human-Based Terms and Units of Measure

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