Wind Speed Measurement

Wind Farm Planning Made Dependable

With over 25 years experience in wind speed measurement, DEWI guarantees their clients reliable predictions of annual energy yields of wind farms. Accredited by DAkkS (German Accreditation Body) according to ISO/IEC 17025:2005 for power performance measurements, DEWI offers integrated concepts for combined wind measurement and long term monitoring power performance of wind farms worldwide.

A reliable prediction of the annual energy yield of wind farms is only possible if it is based on accurate on-site wind speed measurements. Wind energy applications require a higher standard of wind speed measurements than is necessary for meteorological purposes. Particularly critical aspects are the selection of the measuring site, the selection and calibration of anemometers, and the installation of the sensors on met masts. The costs involved in high-quality wind speed measurements are small in comparison to the reduction of the financial risk of wind farm projects. Therefore, responsible wind farm planning should be based on wind speed measurements carried out by independent and recognized experts.

Apart from wind measurements for resource assessment there are other special wind measurements offered by DEWI, such as site calibration, wind measurements for wind farm monitoring and designing of special measuring set-ups, for example for determining the turbulence characteristics by means of ultrasonic anemometers or wind profile evaluations.

  • Experience with measurement towers between 30 and 100 m
  • Measurements are carried out according to IEA: Expert Group Study on Recommended Practices for Wind Turbine Testing and Evaluation, 11. Wind Speed Measurement and Use of Cup Anemometry (1999) and IEC 61400-12-1 (2006)
  • Anemometers are calibrated according to DAkkS (German Accreditation Body) and MEASNET
  • DEWI (Wilhelmshaven) is accredited by DAkkS according to ISO/IEC 17025:2005 for power performance measurements
  • Seamless integration with micrositing process
  • Active in cup anemometer research
  • Integrated concept available for wind measurement combined with long-term monitoring of power performance for wind farms




Brochures and sell sheets can be downloaded here