Wind turbines in large wind farms cause only slight changes in temperature, cloud and rainfall in the region of the wind farms. Globally, the change is negligible. Therefore, there should not be any fear that the operation of wind farms increases climate change.
This conclusion was reached by researcher Anna Fitch in a study of wind farm impacts on regional and global climate. With a climate model, Fitch has studied how the climate is affected if wind farms covering 16, 65 or 130 percent of the expected global electricity demand in 2050 were built.