​​​​​​​​​​​​​​The NEMA Lamp Indices are composite measures of NEMA Member companies’ U.S. shipments of a variety of lamp types, including compact fluorescent, fluorescent, halogen, high-intensity discharge, and incandescent, and is designed to track underlying demand for these types o​f lamps. Product shipments data are drawn from NEMA statistical surveys conducted regularly by NEMA and are adjusted for regularly recurring seasonal fluctuations.

For more information, e-mail NEMA Lamp Indices