There is, you will have noticed, no way of mass producing either wind turbines (or, for that matter, the silicon substrates of solar panels) without the use of fossil fuels. For the time being, the only way to turn silica into silicon metal is by smelting it with coking coal. Meanwhile, the blades of the wind turbine, in particular, are made out of resins that are primarily extracted from crude oil and natural gas. The story is similar elsewhere: you cannot make high-performance lithium-ion batteries without using graphite obtained from crude oil.
