I wonder how many tens of thousands of wind turbines it would take to power up Manhatten.
Iteresting question .... most of the units being erected in Iowa (Fields full of them) have two operational modes ... fast above 16 mph wind ... 600kw (they aoutomatic brake above 35mph) and slow 7 mph wind and get this outut drops to 125kw. below 5 there is no output.
In perspective it would take 10 windmills at the optimum speed to power approximately 100 homes. By the time the transmision lines are installed .. the switching gear to go the grid .. the payoff will probably be somwhere in 2120. And ... that is only if the wind blows constantly at the upper rate. Wind farms are a joke ....