And the expected lifespan of a windmill is 15 years or so, they are high maintenance, and, as Larry mentions, heavily subsidized, so....how is that free?
Plus, when there is no wind, from where does that "free" energy come? Energy is needed immediately, upon demand, with no wind, no energy, and thats a major bummer(just think how things would be no wind and this heatwave, no a/c, no fans, and many people perishing).
