See: http://www.renewableenergyworld.com/rea/news/article/2012/01/making-way-for-a-bigger-turbine
It is amazing how big these things are getting. Quote from article: “The landscape is littered with people who predicted turbines couldn’t get any bigger,” said Felker. “They said that at 50 kW. They said that at 100 kW. They said that at half a MW and they said that at 1 MW. It’s just silly to predict a limitation because again and again, the industry has found ways to innovate to get past technology barriers that are perceived at any given size.” Increased turbine size means the projections of total wind resources must increase. The projections are based on the size of turbines available at the time the projections are made. The larger turbines reach higher and sweep a larger cross-section of the sky, so they produce more energy per square kilometer of land. - Jed
