NEMA’s shipment indexes for high intensity discharge (HID) lamps declined by 11.7, 17.1, and 0.9 percent on a year-over-year basis for sodium vapor, mercury vapor, and metal halide lamps, respectively. For the year as a whole, shipments of mercury vapor lamps also declined for the fourth consecutive year, dipping 2.7 percent compared to 2009. Conversely, sodium vapor and metal halide HID lamp shipments increased during 2010 by 1.1 and 5.2 percent, respectively.
Sodium vapor lamps showed an increase in market share of nearly 2.0 percentage points ending the quarter at 33.2 percent of HID lamp shipments. The share of metal halide lamps registered a reading of 61.8 percent, a decline of 1.5 percentage points. Mercury vapor lamps gave up market share as well declining by 0.5 percentage points to 5.0 percent for the fourth quarter.
NEMA is the association of electrical and medical imaging equipment manufacturers. Founded in 1926 and headquartered near Washington, D.C., its approximately 450 member companies manufacture products used in the generation, transmission and distribution, control, and end use of electricity. These products are used in utility, industrial, commercial, institutional, and residential applications. The association’s Medical Imaging & Technology Alliance (MITA) Division represents manufacturers of cutting-edge medical diagnostic imaging equipment including MRI, CT, x-ray, and ultrasound products. Worldwide sales of NEMA-scope products exceed $120 billion. In addition to its headquarters in Rosslyn, Virginia, NEMA also has offices in Beijing and Mexico City.
Stacey Harrison, Director, Statistical Operations