Say goodbye to your 100-watt incandescent light bulbs. On Jan. 1, it’ll become increasingly challenging to find one on a store shelf in California. That’s because the state has ordered a phaseout of the high energy-consuming light bulb. The state is pressing to have the old incandescents replaced with newer, more efficient bulbs, such as compact fluorescents, halogens and light-emitting diode light bulbs, or LEDs. And beginning in 2012, 100-watt incandescents will be off the shelves completely. As is typical, California is getting a jump-start on a trend that will begin nationwide in a few years. Three years ago, the...