These are recent articles you might find of interest:

– Shows the downstream effects of wind farms
Pryor, S.C., Barthelmie, R.J. and Shepherd, T. 2018 The influence of real-world wind turbine deployments on regional climate, Journal of Geophysical Research – Atmospheres,

– Shows that wind energy can play a critical role in reducing the impact of climate and keeping delta T to below 2 degree C
Potential contribution of wind energy to climate change mitigation
R. J. Barthelmie & S. C. Pryor
Nature Climate Change 4, 684–688 (2014) doi:10.1038/nclimate2269

– Shows the impact of very large wind farms on the local and downstream meteorology is very small and can only be detected in minor changes in the temperature profile at night
Smith, C.M., Barthelmie, R.J. and Pryor, S.C. 2013: In situ observations of the influence of a large onshore wind farm on near-surface temperature, turbulence and wind speed profiles. Environmental Research Letters, 8, 034006 doi:10.1088/1748-9326/8/3/034006

– Future wind climates for the US
Hybrid downscaling of wind climates over the eastern USA, S C Pryor and R J Barthelmie, 2014 Environ. Res. Lett. 9 024013