For two decades, CFLs lacked precisely what we expect from lightbulbs: strong, unwavering light; quiet; not to mention shapes that actually fit in the places we use bulbs. Now every one of those problems has been conquered. The bulbs come on quickly; their light is bright, white, steady, and silent; and the old U-shaped tubes--they looked like bulbs from a World War II submarine--have mostly been replaced by the swirl. Since 1985, CFLs have changed as much as cell phones and portable music players.
One thing hasn't changed: the energy savings. Compact fluorescents emit the same light as classic incandescents but use 75% or 80% less electricity.
What that means is that if every one of 110 million American households bought just one ice-cream-cone bulb, took it home, and screwed it in the place of an ordinary 60-watt bulb, the energy saved would be enough to power a city of 1.5 million people. One bulb swapped out, enough electricity saved to power all the homes in Delaware and Rhode Island. In terms of oil not burned, or greenhouse gases not exhausted into the atmosphere, one bulb is equivalent to taking 1.3 million cars off the roads.
I replaced the bulbs in the overhead fixture in my study with compact fluorescents, and I'm not crazy with the quality of the light they're producing. But I may not have chosen the best new bulbs. I have been replacing outdoor lights with fluorescents, though, as I don't care as much about the light quality there.
But look who's spreading the technology:
In the next 12 months, starting with a major push this month, Wal-Mart wants to sell every one of its regular customers--100 million in all--one swirl bulb. In the process, Wal-Mart wants to change energy consumption in the United States, and energy consciousness, too. It also aims to change its own reputation, to use swirls to make clear how seriously Wal-Mart takes its new positioning as an environmental activist.
It's a bold goal, a remarkable declaration of Wal-Mart's intention to modernize and green up a whole line of business using market oomph. Teaming up with General Electric, which owns about 60% of the residential lightbulb market in the United States, Wal-Mart wants to single-handedly double U.S. sales for CFLs in a year, and it wants demand to surge forward after that.
Diane Lindsley, the hardware buyer who decides what goes in the lightbulb aisles at Wal-Mart, thinks 100 million swirls is perfectly reasonable.