Light emitting diodes could eventually pass the compact flourescent bulb as the energy saver’s lighting of choice. Bulbs are made up of arrays of red, blue and green bulbs which can produce white light up to six times brighter than equivalent power incandescent bulbs. The levels can also be varied to produce mood lighting. At the moment unit costs are far too high for domestic use, but that used to be the main drawback of compact flourescent as well. Development and a growing market should bring them into sensible price bands soon enough.
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