Electricity generated by running water through a dam's turbines costs about 9 cents a kwh generated. That's less than half the cost of electricity generated from "ordinary" solar panels. More than three times less than solar thermal power. And hydropower may be even cheaper than what the EIA says it is.
The Hoover Dam, for example, is said to wholesale the electricity it generates for as little as 1.6 cents a kwh -- about a penny-and-a-half.
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