Wind Farms

I read in the latest Wired about a fairly small project to build 50 wind turbines using old oil rigs in the Gulf of Mexico. It said that the intended 50 turbines would power about 49,000 households. Based on that I saw there must be something funny about the scale of these things. I thought it would be fun to put one up at my place, since we get so much wind on top of our mountain, but...powering 1000 households with one little propeller?

Well, thanks to Q I now have a better sense of the scale of some of these pups.