It's lights out for traditional light bulbs

A little-noticed provision of the energy bill, which is expected to become law, phases out the 125-year-old bulb in the next four to 12 years in favor of a new generation of energy-efficient lights that will cost consumers more but return their investment in a few months.

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Under the measure, all light bulbs must use 25% to 30% less energy than today's products by 2012 to 2014. The phase-in will start with 100-watt bulbs in January 2012 and end with 40-watt bulbs in January 2014. By 2020, bulbs must be 70% more efficient.