ZephIR - Applications in the wind industry

The accurate prediction of energy yields is fundamental to the success of wind farm projects. Yield prediction accuracy increases by collecting high quality wind data from numerous points throughout a wind farm and at appropriate heights including the full rotor sweep. This density of data collection is difficult and expensive to achieve with traditional anemometry masts alone. Based at ground level, ZephIR provides complete wind resource measurement including horizontal and vertical wind speed, wind direction and turbulence at any height up to 200 metres without the need for a mast. ZephIR requires no planning permits and removes the need to work at height, mitigating associated health & safety issues.

The portability of ZephIR and ease of deployment makes high density data collection a reality with 50 measurements per height per second, both horizontally and vertically across the extent of your site. ZephIR is used in four phases of a project:

  • Site prospecting, assessment and turbine micro-siting
  • Wind flow model verification
  • Power curve assessment
  • Permanent wind farm anemometry and operational wind farm analysis


ZephIR has been independently tested and validated by respected parties in the wind industry.

“ZephIR is approved to be added to the RERL suite of wind speed measurement devices“ - University of Massachusetts (UMASS)

“During the offshore assessment campaign ZephIR came up with a remarkable data availability, clearly being better than the demanded 95%... ZephIR should now be thought of as a powerful tool to aid in the understanding of flow conditions on sites being investigated“ - Germanischer Lloyd WINDTEST

“The ZephIR technology has provided NaiKun with continual wind resource measurement in a very challenging offshore environment. Its reliability and performance has been close to 100 per cent and is a valuable asset in the development of the NaiKun offshore wind project in Hecate Strait near Haida Gwaii (the Queen Charlotte Islands)” - NaiKun Wind Development Inc.

“We evaluated ZephIR’s performance next to a 100m mast in complex terrain and witnessed extremely high correlations against traditional meteorology, at all heights” - Center for Renewable Energy Sources (CRES)