The blades are fibreglass or carbon fibre mix. Usually hand laid up.Steel embodied energy is about 5000Kwh/ ton. Concrete is about 250/ton
(https://en.m.wikipedia.org/wiki/Embodied_energy)
So, our little turbine spits out just under 10,000kWh/year.
Even if you said none of the steel was recyclable (clearly it is) there can't more than a few years of total embodied energy to pay back.
And nearly all Britain's turbines have been built abroad. Billions leaving our economy to keep other people in jobs.
Nuclear employs loads of people in Britain during construction and they are good quality jobs as well.