Long-term Scaling of Site Measurements: Evaluation of Long-Term Meteorological Data in France and Comparison of Correlation Methods Corrélation à long terme de mesures sur site

The accurate long-term assessment is of crucial importance in the frame of any wind farm energy yield assessment or assessment of operational data. Experiences show that the expected long term energy output can vary, for the same wind farm and measurement data base, in a range of up to +/- 20 p.c. depending on the selected long-term meteorological station and the used correlation procedure.