Investing in a new lighting system is a significant decision for growers, and understandably, they seek assurance that the chosen luminaires will provide optimal performance and return on investment (ROI) over time. However, with numerous lighting manufacturers claiming their products as the best in the market, how can growers determine which ones truly deliver on their promises?
While some inferior products are easy to spot, such as those from manufacturers lacking experience in horticulture or lacking local safety certifications, others present claims that appear legitimate. To navigate this complexity, growers need access to reliable performance data to validate manufacturer claims.
A valuable resource for growers is the Design Lights Consortium (DLC) Qualified Products List (QPL) for LED horticultural lighting, introduced in 2019. This independent database allows growers to verify manufacturer performance claims and spectral compositions of luminaires, including PAR wavelengths and far-red, ensuring transparency and reliability.
Given the rapid growth of horticultural lighting, utilities are increasingly focused on energy conservation programs, often requiring DLC listing as an eligibility criterion for rebates. DLC listing provides assurance that a luminaire meets rigorous third-party testing standards, ensuring both performance and safety.
It's important for growers to verify that the specific model of luminaire they intend to purchase is actively listed on the DLC's QPL. Products not meeting the current version of DLC's technical requirements are delisted, rendering them ineligible for rebates.
Manufacturers, including Gavita, Dutch Lighting Innovation and Agrolux, list their LED products with the DLC, recognizing the importance of DLC certification for growers. However, some manufacturers exploit loopholes by listing only certain configurations of a product, while selling others without DLC listing. This deception undermines the integrity of the certification process and could lead growers to inadvertently purchase non-qualifying products.
As awareness grows within the horticultural community and regulations tighten, such deceptive practices will likely face stricter enforcement. By staying informed and verifying DLC listing, growers can protect their investments and contribute to the integrity of the horticultural lighting industry.
To learn more about DLC's Testing and Reporting Requirements for LED-based Horticultural Lighting or to access the horticultural QPL, sign up for a free account on the DLC's website. For assistance with your project, feel free to reach out to our sales representatives. They are ready and willing to provide support and address any questions you may have.
