NEMA’s compact fluorescent (CFL) lamps index retreated for the fourth consecutive quarter in Q1 of 2011, registering a reading of 180.8, a decline of 16.8% on a year-over-year basis. Incandescent lamp shipments fared better, showing an increase of 6.4% over the previous quarter. With a first quarter reading of 57.0, the index remained unchanged from [...]