Another club with a piezoelectric floor that allows dancers to power the light show was in the news last week…

http://www.nytimes.com/2008/10/24/world/europe/24rotterdam.html

From the article: “The energy produced by an average person dancing is about 20 watts’ worth, so two people could light a bulb, Club Watt’s scientific consultants have found. Aryan Tieleman, one of the club’s owners, hopes his sustainable dance floor will ultimately produce 10 percent of the club’s electricity.”

20 watts per dancer sounds like a high estimate, based on my research of piezoelectrics, but maybe those Dutch dancers are more powerful than most.

Still, as the article mentions, “Sustainability experts emphasize that much of the [reduction in greenhouse gases] should come from doing the things that everyone does now, but in ways that are a bit more efficient and green.”