Todays standard instruments are located on the nacelle behind the rotor and they are effected from different wind flow in front of the rotor and around the nacelle , and they are therefore not able to measure wind direction and wind speed correctly.

Even a small differences can result in a significant decrease of the annual energy production of the wind turbine and increased loads on the wind turbine.

TRES Wind offer a very cost efficient service program to permanently correct the existing sensor signals for remaining wind turbine life time.

ROI normally less than 2 years.