“Carbon-free fairies do not magically drop windmills onto moutaintops,” said Heritage’s Spencer in an Oct. 29, 2007, commentary. “For example, 2 million tons of concrete, about double what a nuclear plant requires, must be produced and delivered to anchor enough windmills to match one nuclear plant’s energy production. Just producing this concrete emits the CO2 equivalent of flying a Boeing 747 from New York to London 450 times.