Products + Technology

NEMA HID Lamp Indexes Decline During Fourth Quarter

Craig DiLouie April 21, 2011

NEMA’s shipment indexes for high intensity discharge (HID) lamps declined by 11.7%, 17.1% and 0.9% 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% compared to 2009. Conversely, sodium vapor and metal halide HID lamp shipments increased during 2010 by 1.1% and 5.2%, respectively.

Sodium vapor lamps showed an increase in market share of nearly 2% percentage points ending the quarter at 33.2% of HID lamp shipments. The share of metal halide lamps registered a reading of 61.8%, a decline of 1.5 percentage points. Mercury vapor lamps gave up market share as well declining by 0.5 percentage points to 5% for the fourth quarter.

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