Comment Re:don't make bigger ones (Score 2) 184
Physics and economics disagree. Power harvested increases by the square of blade length (since swept area = Pi*r^2). If you double the blade length you get four times the power output. Economically (and environmentally and aesthetically) it makes more sense to build one bigger turine instead of four smaller ones. That means only one concrete base, one tower, one nacelle to maintain, and more flexibility in siting the turbine.