[ThunderSleeps]

Agreed, no net energy gain. They don't generate energy (like say combustion converting stored chemical energy, nuclear decay, etc.) That heat the faster moving wind would've carried away doesn't get dissipated downstream. So somewhere it is cooler and calmer.

Hmm, slower moving, cooler air probably increases local relative humidity, picks up less moisture from the surface... Less atmospheric moisture means more sunlight striking the ground, more surface warming... Or maybe not. Maybe higher relative humidity is still enough to form water droplets and block/absorb sunlight. Complex system. Don't ever let climate "scientists" tell you they have it all figured out either. ;-)

Anyway, yeah I believe it is probably locally warmer there, cooler someplace else. But global warming? Ha. Localized phenomena around the wind farms.

[aquila48]

Bottom line - Not worth losing sleep over, like all the other global warming crap.