>From http://www.energystar.gov/index.cfm?c=cfls.pr_cfls:
>
>If every American home replaced just one light bulb with an ENERGY STAR, we would save enough energy to light more than 2.5 million homes for a year and prevent greenhouse gases equivalent to the emissions of nearly 800,000 cars.
>
>Tamar
>
>P.S. We've started replacing our bulbs, too.

I'm somewhat skeptical of those claims. It's not that I don't think that using CFLs are a good idea. I do, and am using them in my house. It's that without seeing the calculations behind the result, I'm skeptical.