Luminaires: High Intensity Discharge Luminaires

While proper illumination is needed in commercial and industrial settings, the selection of the right lighting system can make a significant difference in energy consumption. Energy savings of up to 50 percent or more are possible in some cases. Less efficient indoor lighting sources often create heat as well as light, and can be a serious source of excess heat in buildings. The additional cooling energy required to counteract this effect increases a building’s total energy use. Thus, efficient lighting design not only reduces lighting energy usage and cost, it can also make a difference in other operational areas as well. This Report is the first in a series of three that will focus on commercial and business applications of energy-efficient indoor lighting.