evidence: The concept of net energy must be applied to renewable sources of energy, such as windmills and photovoltaics. A two-megawatt windmill contains 260 tonnes of steel requiring 170 tonnes of coking coal and 300 tonnes of iron ore, all mined, transported and produced by hydrocarbons. The question is: how long must a windmill generate energy before it creates more energy than it took to build it? At a good wind site, the energy payback day could be in three years or less; in a poor location, energy payback may be never. Notice, the bold, italicized section was omitted in the meme (and the inflammatory "hydrocarbon-spewing processes and machines" added). Hughes wasn’t saying windmills take more energy to build than they produce, just that it depends on the location. Windmills in good locations might break even relatively quickly, while bad locations might never do so. [...] This meme is both dishonest and wrong in its claim. It takes a book excerpt and distorts the author’s meaning completely. Not only do most windmills produce more energy than they take to build, the factor is about 20 times more.