Most lighting professionals know that DLC certification matters. Products on the Qualified Products List (QPL) qualify for utility rebates. Products that fall off the list don't. That much is clear.
What's less clear, and what can quietly affect the outcome of a project, is how much the transition to DLC 6.0 actually changes. Not just in terms of what gets listed, but how it shapes product selection, fixture count, energy performance, rebate eligibility, and long-term strategy.
The DLC released SSL Version 6.0 in November 2025, its first major update since SSL V5.0 in 2020. Products that do not meet the new requirements will be delisted from the QPL in December 2026. The window to act is open, but it's moving.
Here is what you need to understand before your next conversation about specifications or projects.
DLC certification is what connects a commercial LED product to utility rebates. The DesignLights Consortium (DLC) maintains the Qualified Products List (QPL), a database of independently tested luminaires that meet defined performance thresholds for efficacy, color rendering, lumen maintenance, dimming, and controllability. Nearly 700 utility and energy efficiency programs across North America use the QPL to determine rebate eligibility. If a product isn’t on it, most programs won’t accept it.
DLC 6.0 raises those thresholds significantly, which means many products listed under the previous version will no longer qualify. For agents, distributors, contractors, and specifiers, understanding what changed and when it takes effect is essential to staying ahead of rebate eligibility on upcoming projects.
SSL V6.0 raises minimum efficacy thresholds by an average of 14 percent across all qualified product types, the first increase since V5.0 in 2020, with some categories climbing as high as 30 percent. A product comfortably listed under V5.1 may not qualify under V6.0 if its lumens-per-watt output hasn’t kept pace. Products that do meet the new bar will deliver meaningfully more usable light per watt consumed.
SSL V6.0 introduces a tiered Controls Categories framework, organizing products from Category 0 (no integral controls) to Category 6 (luminaire-level controls with a networked controller on the DLC’s NLC QPL). A new "controls ready" category covers products with plug-and-play receptacles for field-installed accessories. DLC Premium, which carries higher efficacy thresholds and controllability requirements, continues under V6.0 and remains the benchmark for programs offering premium rebate incentives.
LUNA (Light Usage for Night Applications) is now integrated into the single SSL V6.0 and LUNA V2.0 technical requirements document. V2.0 sets a 5000K CCT cap for standard outdoor products, adds eligibility for amber and low CCT products (1800K–2000K) that meet light pollution criteria, and maintains dimming requirements to reduce output during low-activity periods. Some utilities are already requiring LUNA qualification for specific outdoor rebate categories, and dark sky ordinances continue to expand across North American municipalities.
The DLC began accepting applications under V6.0 requirements on January 5, 2026. Products currently listed under V5.1 will not be removed from the QPL immediately; they remain eligible until December 15, 2026.
After that date, any V5.1 product that has not qualified under V6.0 will be delisted. The same applies to LUNA V1.0 products that do not transition to V2.0. Delisted products are no longer accepted as rebate-eligible by the utility programs that rely on the QPL.
The practical consequence: projects specified or purchased after December 2026 that rely on V5.1-only products will lose rebate eligibility. For contractors managing long-lead projects or distributors managing inventory, this transition timeline is not abstract; it is a procurement and planning issue that needs attention now.
The efficacy gains in DLC 6.0 have real project-level consequences: fewer fixtures to hit the same footcandles, lower energy draw over the installation’s operating life, and better photometric coverage in constrained layouts. A product that just clears V5.1 is not the same project outcome as one that exceeds the V6.0 bar. For a deeper look at how lumens per watt actually translate to project economics, see our post on lumens vs. watts.
DLC 6.0's expanded focus on controllability and networked lighting isn't a future consideration; it is already shaping rebate structures. Programs that once incentivized fixtures are now layering in additional incentives for controlled and networked products.
AimLite’s Wave system is built for this environment. Wave uses Bluetooth Mesh technology to deliver a wireless smart lighting solution for both emergency and general lighting luminaires. The system operates via a decentralized mesh network, meaning it runs independently of Wi-Fi and maintains reliable communication even in areas with weak or no internet access.
Wave capabilities include:
AimLite's product line includes both Smart Fixtures and Smart Ready Fixtures, the latter category supporting plug-and-play control accessory installation without fixture modification, which aligns directly with the "controls ready" category introduced in DLC 6.0's new controls framework.
For agents and specifiers evaluating projects where DLC Premium or controls-based rebate incentives are in play, Wave-compatible and controls-ready AimLite products are worth examining early in the specification process.
DLC 6.0 raises the bar for what qualifies as high-performance commercial lighting. Products that clear the new efficacy thresholds give you more design flexibility, better energy performance for clients, and stronger rebate outcomes. Controls-integrated products open the door to incentives that fixture-only specs can’t access. And for outdoor work, getting ahead of LUNA V2.0 now positions your projects for compliance with ordinances that continue to expand across Canada and the U.S. December 2026 is the hard deadline. The window to act is open.
AimLite’s team can help you navigate product selection, confirm DLC status, and identify Wave-compatible options for projects where controls-based rebates apply. Contact your AimLite agent or visit aimlite.com/products to explore the full product line.