Energy Optimization for Horticultural Lighting

Controlled environment agriculture is a rapidly growing sector that uses horticultural lighting to optimize crop production and reduce environmental impact. Horticulture LED lights are one of the most energy efficient and effective options for artificial lighting for plants, as they can deliver the right spectrum, intensity, and duration of light for different crops. The horticulture lighting market is expanding and growers need high-quality products with reliable performance claims. That’s why the DLC offers a Qualified Products List for energy efficient horticultural lighting, and verifies the performance and efficiency of different products based on rigorous testing and standards. By using the Horticultural QPL, growers can save time and money, improve their crop yields, and contribute to the sustainability of indoor agriculture. Horticulture lighting optimization could save up to $350 million worth of energy every year.

Find Qualified Products
horticultural lighting
horticulture lighting


increase in listed fixtures on the Hort QPL since the start of 2020 – meaning more product variety and savings

$350 million

total possible annual energy savings if facilities switch to horticultural LED lighting

Updates to Horticultural Technical Requirements

The DLC has adopted a preset revision cycle for the Horticultural Lighting Technical Requirements and QPL to give greater predictability surrounding changes to end users. The QPL will undergo 24-month major revision cycles focusing on efficacy and structural updates, and 12-month minor revision cycles focusing on administrative and process improvements. Subscribe to the DLC’s mailing list for updates on this QPL.

Horticultural Technical Requirements V3.0

The DLC is pleased to release Horticultural Technical Requirements Version 3.0, effective on March 31, 2023.

Final Policy

Draft 2


Draft 1

Version Status Effective Date Update By Delist Date Documentation
ACTIVE Mar 31, 2023 -- -- Download PDF
DELISTED Sep 1, 2021 Feb 2, 2024 Mar 31, 2024 Download PDF
DELISTED Mar 31, 2021 Feb 2, 2024 Mar 31, 2024 Download PDF
DELISTED Oct 21, 2019 Dec 31, 2021 Jan 31, 2022 Download PDF