Wind farms are a joke, page-63

yes they do, the average lifespan of a coal fire power station is 35 to 50 years from memory and a wind turbine 20.
Not, that that means a lot.

Here is an Australian one shutting up shop.

Note, the company says it will make NO difference when it finishes - because they have a gas turbine. Interesting statement.

Note also that Esperance wants to keep them going to 'appear' green - they aren't alone in that one.

http://www.abc.net.au/news/2014-07-27/locals-fear-esperance-wind-farm-will-not-be-replaced/5627136