Product Testing and Specifications

Qualified Products

The DesignLights™ Consortium (“DLC”) Qualified Products List (“QPL”) Members support only high-quality, high-performing commercial LED products. Each of the products listed on the QPL have met the DLC’s minimum performance and other requirements. To view the latest version of the DesignLights™ Consortium Qualified Products List download the Excel spreadsheet found on their website.

Lighting Facts

Lighting Facts is a program of the U.S. Department of Energy that showcases LED products for general illumination from manufacturers who commit to testing products and reporting performance results according to industry standards. For lighting buyers, designers, and energy efficiency programs, the Lighting Facts label provides information essential to evaluating products and identifying the best options. The label, found on almost 3000 products, acts similar to a nutritional guide, informing consumers on the energy consumption, CRI, CCT, and other key metrics used to evaluate light sources.


The DOE Commercially Available LED Product Evaluation and Reporting (CALiPER) program supports testing of a wide array of SSL products available for general illumination. DOE allows its test results to be distributed in the public interest for non-commercial, educational purposes only. More information and summaries of their reports can be found on their website.

DOE supports testing of a wide, representative array of SSL products available for general illumination, using industry-approved test procedures. Guidelines for product selection ensure that the overall set of tests provides insight on a range of lighting applications and product categories, a range of performance characteristics, a mix of manufacturers, a variety of LED devices, and variations in geometric configurations that may affect testing and performance.

Commercially available products are purchased and then tested by one of several prequalified lighting testing laboratories arranged to assist this program. All luminaires are tested with both spectroradiometry (in an integrating sphere) and goniophotometry, along with temperature measurements (taken at the hottest accessible spots on the luminaire) and off-state power consumption.