I don't know about the financial aspect, but there are many studies on the lifecycle emissions of a wind turbine that you can look up. How much CO2 a turbine of

I don't know about the financial aspect, but there are many studies on the lifecycle emissions of a wind turbine that you can look up. How much CO2 a turbine offsets depends a lot on the grid it's connected to, so there's no single number for "time-to-carbon-negative". However, remember that all power plants have materials, and wind has the second-lowest lifecycle emissions of all renewable technologies (https://www.nrel.gov/docs/fy21osti/80580.pdf https://www.nrel.gov/docs/fy21osti/80580.pdf), and of course is orders of magnitude better than non-renewables.