Although still a relatively small slice of the incandescent- dominated lighting market, energy-efficient compact fluorescents (CFLs) and light-emitting diodes (LEDs) have gained traction over the past few years thanks to green-building programs and some progressive local energy codes. They're about to get a real boost.rnThe Energy Independence and Security Act (EISA) of 2007 soon will limit the number of watts a bulb can consume for a given number of lumens, a measure of light output. The legislation takes effect Jan. 1, 2012, when the luminary equivalent of today's 100w incandescent bulb will be allowed to consume only 72w.
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