How long does it take for a modern wind mill to produce as much energy as it took to produce it?
Edit: a lot of estimates for 6 to 9 months seem to be floating around, but this one cites several years at least for economic break even (not exactly the same as CO2 break even, but perhaps an approximator) https://weatherguardwind.com/how-much-does-wind-turbine-cost...
Of course, pick the estimate that suits your ideology!
