Wind measurements
The wind data is used to select the appropriate turbine for the site, optimize the turbine layout of the farm, and predict the energy production.
As turbines grow in height, mast instrumentation, erection and maintenance have become expensive; prices increase with height.
At the same time, the discrepancies between the measured wind at the rotor centre and the turbine performance have increased the need for determining the wind over the entire turbine rotor.