Commercial lighting in the United States is primarily regulated by the International Energy Conservation Code (IECC) and ASHRAE Standard 90.1. These codes establish requirements for lighting power density limits, automatic controls, occupancy sensors, and overall energy efficiency in commercial buildings. Many states and municipalities adopt one or both of these standards, sometimes with local amendments or stricter efficiency requirements. Compliance ensures that lighting systems meet national energy performance goals while reducing operating costs and environmental impact.
Answer
Oct 23, 2025 - 10:34 AM
