According to the DLC, V5.0 “lays the groundwork to capture and promote continuing advances in energy-efficient technology.”
The DLC’s goals for the new requirements introduced with V5.0 are:
DLC - Goals of Version 5.0Here are highlights of the efficacy requirement changes in V5.0:
Energy Efficiency: With V5.0 the DLC Standard minimum efficacy requirements increased an average of 12% over V4.4. The DLC Premium rating is a flat 15 lumen per watt increase over the Standard requirement.
Dimming: In previous DLC standards, a lighting fixture had to be dimmable to be designated as Premium. As of V5.0, dimming is required to receive both Standard and Premium designations.
You can review the full V5.0 Standards on the DLC site.
