People here always assume that companies just throw hundreds of millions of dollars into a project like this without actually having actual engineers figure out the construction and operation costs first.
Oh, this very thing happens all the time in Europe. Sometimes on purpose (e.g. initial subsidies to drive down the price of renewables) and sometimes because of "it's green, so it's good" bandwagon.
The best book on programming for the layman is "Alice in Wonderland"; but that's because it's the best book on anything for the layman.