BriteSwitch: How the DLC V6.0 Transition Could Affect Your Lighting Rebates
When you’re quoting a commercial lighting project, the last thing you want is a surprise when it’s time to collect the rebate. On December 15, 2026, the DesignLights Consortium (DLC) will remove products that haven’t transitioned to its new SSL V6.0 requirements. As of October 12, more than 248,000 products were still listed under V5.1. With approximately 65% of commercial lighting rebate offerings requiring DLC-qualified products, this transition could have an major impact on projects extending into 2027. But losing DLC qualification doesn’t necessarily mean losing rebate eligibility. Some utilities will require V6.0 starting January 1, while others are allowing older products to remain eligible for a period of time. We took a closer look at how specific rebate programs are handling the transition and how you can avoid costly mistakes. How the DLC V6.0 Transition Could Affect Your Lighting Rebates



Once limited to research labs and specialized grow rooms, horticulture lighting has become one of the fastest-growing segments in the lighting industry. As technology costs drop and efficiency improves, these systems are now used in greenhouses, vertical farms, floriculture, and even in facilities producing plant-based vaccines. The global market is expanding at roughly 12% per year and is projected to reach $22 billion by 2033, making it one of the brightest opportunities for both lighting manufacturers and rebate-driven projects. Like they did with traditional lighting, LEDs have revolutionized grow lights. With 20 to 45% less energy usage than conventional HID grow lights, they provide a huge opportunity to cut operating costs for growers. The reduced wattage also means less waste heat, which is hugely beneficial to indoor growing operations. In October 2019, the 
Early adopters who first transitioned from fluorescent and HID to LED lighting a decade ago are discovering that it’s time to replace their early-generation fixtures. Traditionally, rebate programs haven’t supported LED-to-LED upgrades, but that’s starting to change. As LED technology has evolved, both light quality and efficacy have significantly improved. One effective way to measure these advancements is by examining the 