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Norrekaer Enge Power Deficit 1

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The benchmark is open to participants of Wakebench who want to analyze wind farm measurements for wake model validation.


Determination of power deficit between pairs of turbines in the wind farm as function of flow direction.

Data Accessibility

The benchmark is offered to all participants of the IEA Task 31 Wakebench.

Input data

Approximately one year of 10-minute statistics for power and wind measurements recorded in a 42 x 300 kW wind farm have been made available for this benchmark.

Validation data

  1. Determine the power deficit between a pair of wind turbines with 6.3 D spacing for a 20 deg inflow sector. The deficit between turbines A2 and A1 is determined for the inflow sector 155-175 deg for a 5° moving window and wind speed interval of 6 – 12 m/s with reference to M1. Power deficit = 1 - Power(A2)/Power(A1)

Model runs

Not applicable 

Output data

  1. Power deficit as function of inflow direction with 1 degrees step interval: 155-175 deg

A dedicated excel spreadsheet template has been attached in order to provide the outputs in a standardized format; which include a data sheet for reporting park power deficit for 6.3 spacing – as function of wind direction.


Please include a short description of the methodology; which has been used to identify potential observation, filtering criterion and the averaging procedure in maximum 1 page.