So long 100-watt incandescent light bulbs — California is ordering them off store shelves starting Jan. 1 in an energy-saving move. For now at the Home Depot in Redding, Calif., the bright ...

While there are still a few 100 watt incandescent on the shelf-- those bulbs went out of production two years ago. "People were hoarding them in the beginning.

Still, the 100-watt lamp is among the most commonly used household light bulbs, according to the General Electric Co., with more than 200 million bulbs sold annually in the U.S. alone.

Beginning Jan. 1, the production of 40- and 60-watt incandescent light bulbs is banned as part of efficiency standards signed into law by President George W. Bush in 2007.

In comparison, the operating cost of a 13-watt CFL — the equivalent to a 60-watt incandescent — is $1.89. That’s about a $30 energy cost savings over the life of the CFL bulb, she said.

Under federal light bulb efficiency standards approved in 2007, old-style 100-watt incandescent bulbs will be phased out this year. Taking their place are bulbs, that by law, must be 25 to 30 ...

A 100-watt incandescent light bulb seen at Royal Lighting in Los Angeles on Jan. 21, 2011 -- before the bulbs were banned by a 2007 law. (AP Photo) ...

Under federal light bulb efficiency standards approved in 2007, old-style 100-watt incandescent bulbs will be phased out this year. Taking their place are bulbs, that by law, must be 25 to 30 ...

Say goodbye to the old-style light bulb.On Wednesday, it will become illegal to manufacture or import 60- and 40-watt incandescent bulbs because of federally mandated efficiency standards signed ...

Any bulb manufactured before Jan. 1, 2011, still can be sold. The federal regulations do not affect a variety of specialty incandescent bulbs, such as three-way, colored, bug lights and heavy-duty ...