The wind mills that were built in the 80ies are already scrapped, afaik they only last 20 years.
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!
"We examine 119 wind turbines from 50 different analyses, ranging in publication date from 1977 to 2007. We extend on previous work by including additional and more recent analyses, distinguishing between important assumptions about system boundaries and methodological approaches, and viewing the EROI as function of power rating. Our survey shows an average EROI for all studies (operational and conceptual) of 25.2 (n = 114; std. dev = 22.3)." https://www.sciencedirect.com/science/article/abs/pii/S09601...
Wikipedia doesn't really prove anything, and I already mentioned that there are many claims of 6 to 9 months. Your paper seems to suggest 12 months (assuming a lifetime of 20 years).
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!