They've had a great long run, 134 years, but come January most screw-in incandescent lightbulbs will have been phased out as a result of they use too much energy. There's no need to hoard bulbs. Our exams found that new LEDs and CFLs are gentle-years ahead of earlier versions. Commonplace 60- and 40-watt bulbs are the final to be phased out, though remaining inventory can be bought