DLC Certified Design Lights Consort, a consortium of utility companies and regional performance agencies, is a leader in certifying energy-efficient lighting quality and performance. DLC's goal is to promote high-quality, energy-efficient lighting design in all businesses. Popularity in the field of lighting. The DLC Certified product catalogue is used by utility companies for the promotion of high performance solid state lighting fixtures that have not been covered by the ENERGY STAR standard throughout the United States. For non-ENERGY STAR lighting products, the DLC-certified product catalog is the de facto standard for measuring high-quality, energy-efficient lighting products. You can also do DLC certification for products that are currently not available in ENERGY STAR. The current standard version of DLC is 4.1, which took effect on the day of release on November 1, 2016. DLC4.1 is a standard range extension and does not require an upgrade. Currently in the US and Canadian lighting markets, DLC has gradually become an indispensable certification standard for LED lamps. And it can give end customers a generous government subsidy.