Due to a high volume of applications, initial and comprehensive review timeframes are currently extended by 10 days each for SSL, LUNA, and Hort applications. Click here for more details about SSL application review timeframes, and here for more details about Hort review timeframes. Thank you for your understanding!

Horticultural Technical Requirements

Past Technical Requirements Versions

Development of Technical Requirements for the DLC Horticultural Lighting QPL is an ongoing process involving input from Members, stakeholders, and our Technical Committee. The DLC strives to be responsive to the constantly-evolving Hort market and ensure that updates serve the needs and interests of both our Member utilities and our many industry stakeholders equally.

Please see below for an archive of past versions of the DLC Horticultural Lighting Technical Requirements.