N90/2500 wind turbines of the manufacturer Nordex are requested. With a performance of 2500 kW the N90/2500 wind turbine belongs middle market segment. The rotor diameter of this plant is 90 m. This well known manufacturer Nordex disposes over an wide product range of 29 different models. The power production starts at a wind speed of 3 m/s. At 25 m/s the automatic turn off the plant takes place. The optimal performance can be reached at a comparatively high wind speed of 13 m/s. This plant is certified according to IEC Ib