Regardless of the source of rotation, all other aspects are the same as far as heat generation goes. That was the point I tried getting across to the people who were insisting to me that wind turbines cause climate change. Hydro, diesel engine, NG fire or nuclear driven steam turbines, wind turbine. They're all just spinning copper coils. Any heat from those would be the same.

The copper coils also had nothing to do with the heat in question anyway. The study was just showing turbulence could bring warm air to ground level. Honestly, sounds like wind turbines should be setup above frost sensitive crops like fruit trees. One bad frost during the tree's bloom could ruin a whole year's harvest.