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From Science 2.0:
Activists love wind power the way they once loved ethanol and natural gas - it is good until scientists show them it is not.
Claims that there is no upper bound for wind power, that it is scalable
because gusts and breezes don't seem likely to "run out" on a global
scale, are not based on reality. And neither are claims that
the generating capacity of large-scale wind farms is unlimited.
A paper on mesoscale atmospheric modeling in Environmental Research Letters
instead found that each wind turbine creates behind it a "wind shadow"
in which the air has been slowed down by drag on the turbine's blades.
The ideal wind farm strikes a balance, packing as many turbines onto the
land as possible, while also spacing them enough to reduce the impact
of these wind shadows. But as wind farms grow larger, they start to
interact, and the regional-scale wind patterns matter more.
Read the whole article
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