Wind
Say what you will about the downsides of wind power -- that windmills kill birds and bats, that they allegedly induce headaches in their neighbors -- one thing's for sure: Wind power is a whole lot cheaper than solar.
EIA estimates say that amortized over their lifetime, windmills generate electricity for a cost of just 10 cents a kwh on average -- on par with hydro, and far cheaper than solar.
Across the ocean, the European Wind Energy Association claims that some of its member projects are generating electricity at a cost of as little as 5 cents a kwh.
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