It still takes 12 to 15 years for an "average" modern windmill to produce enough electricity to pay for it's own creation.
Worse, now they're using "exotic" materials to make them which produce a high level of potential environmental damage and problems with toxic disposal.
Please cite your source.
Also, at $250-500 million a pop how long do you think it takes a coal, gas, oil or nuclear power plant to "pay" for its own creation.
Lastly if it only takes 12 yars, and they have an average of 20 year life-span that doesn't sound like a terrible investment to me. 8 years of pure profit.
FALSE! Windmills have a capital cost recovery period of about 3~5 years. And there are NO "exotic" materials in a modern windmill, unless you consider steel and fiberglass "exotic."