Fast Company reports that, 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 compact fluorescent bulb. In the process, it may change energy consumption in the United States, and energy consciousness, too. 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.

Which presents a daunting challenge: Wal-Mart’s push into swirls won’t just help consumers and the environment; it will shatter a business–its own lightbulb business, and that of every lightbulb manufacturer. Because swirls last so long, every one that’s sold represents the loss of 6 or 8 or 10 incandescent bulb sales. Swirls will remake the lightbulb industry–dominated by familiar names GE, Philips, Sylvania–the way digital-music downloads have remade selling albums on CD, the way digital cameras revolutionized selling film and envelopes of snapshots. CFLs are a classic example of creative destruction.

This equals energy savings roughly equivalent to the needs for a average American city – each year. The effect is cumulative.

Bravo, WalMart, for being willing to prove you can make money with green marketing decisions. Probably more money than those afraid of progress.