The DesignLights Consortium (DLC), based in Medford, Mass., recently released an update to the Technical Requirements for Horticultural Lighting as Version 2.0 (V2.0), with an effective date of March 31, 2021. All horticultural lighting applications will continue to be qualified under Technical Requirements Version 1.2 (V1.2) until March 31, 2021, at which time the DLC will begin accepting applications for V2.0.

V2.0 contains updates to the V1.2 Requirements for Horticultural Lighting Products that work to continue the industry transition from traditional lighting data and metrics to horticultural-specific lighting data and metrics that better represent horticultural lighting performance. The V2.0 requirements also address barriers to listing variations of products by introducing a process for family grouping of products and private labeling of already-listed OEM products. The V2.0 requirements contain the following key updates:

1. Maintain efficacy threshold with additional reporting options.
2. Revision to align with the American Society of Agricultural and Biological Engineers (ASABE) S640 terminology.
3. Revision to align with UL 8800.
4. Revision to require TM-33-18 reporting.
5. Introduction of family grouping.
6. Introduction of private labeling.

For more information, visit the DLC website or contact [email protected]. To view the V2.0 documents, visit the horticultural technical requirements landing page on the DLC website.