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the payoff of the energy required to make is currently about 11 years in Aus, longer in climates with less sun
11 years is from last decade.
Currently less than 1.5 years for thin-film, less than 2 for crystalline.
I live near what will be one of the biggest windfarms in Australia (when they finish it and if you take Stages 1-4 as one big windfarm not 4 small ones next to each other) and they are MASSIVE.Large machines access very significant economies of scale as well as faster wind speeds at height.
The blades are also transported on really, really big trucks that corner really, really slowly so if you get caught behind one of those suckers at an intersection, it pays to turn the car off and just sit back, relax and listen to the radio for a bit while they take the corner.
11 years is from last decade.
Currently less than 1.5 years for thin-film, less than 2 for crystalline.