intreasting winturbine observation of the day

from http://en.wikipedia.org/wiki/Wind_turbines


'The tall towers and blades up to 90 meters long are difficult to transport. Transportation can now cost 20% of equipment costs'.


http://en.wikipedia.org/wiki/Wind_profile_power_law

from this a wind turbine running at 2000 meters might get 10 times the wind speed i.e 1000 times the power is this right. The numbers say so but what about the decrease in pressure. 2000 meters it he top of the boundary layer were the logarithmic flow is.