NEMA’s shipment indexes for HID lamps returned to positive growth territory during the first quarter of 2012, with each lamp type showing year-over-year gains following negative growth to close out the final quarter of 2011. Sodium vapor lamps increased 2.9%, while shipments of mercury vapor and metal halide HID lamps increased 5% and 0.1%, respectively.
Market shares varied slightly among the three lamp types. Sodium and mercury vapor lamps increased by 0.5 and 0.1 percentage points to 32.8% and 4.6%, respectively. Metal halide lamps posted a share of 62.5, a decline of 0.7 percentage points on a year-over-year basis.
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