DesignLights Consortium releases update to technical requirements for horticultural lighting

The DesignLights Consortium (DLC) released the final version of its updated Technical Requirements for Horticultural Lighting (Version 2.1).

Scheduled to take effect September 1, the new policy establishes Qualified Products List (QPL) eligibility for three additional product types, and reflects changes made in response to stakeholder comments received this spring.

DLC’s Horticultural Lighting Technical Requirements V2.1 add direct current (DC)-powered fixtures, externally supplied actively cooled horticultural fixtures, and LED replacement lamps to the DLC’s Horticultural Lighting Program.