What does DLC stand for? The qualified products list is a resource for program administrators, to help them decide which solid state lighting products to include in their energy efficiency promotions. Their primary reference tool for SSLs is ENERGY STAR, however, the regional list fills in gaps in categories which ENERGY STAR does not include. DOE's ENERGY STAR team is working in cooperation with DLC to develop the Qualified Products List (QPL) and procedures. The Members expect the products from their QPL will eventually be incorporated into the ENERGY STAR list once corresponding categories are added.