Wind Resource Grids (WRGs)


The Wind Resource Grids (WRG) provided by AWS Truepower through Windnavigator give users the ability to do everything from siting met towers to designing preliminary layouts to obtaining preliminary estimates of the wind energy generated for small to multi-turbine wind projects. These files are not intended for detailed plant design or definitive energy production estimates. For information on access to data for these purposes please contact us.

Standard WRG Deliverable
  • Format: WRG
  • Resolution: 200m
  • Fixed 25 km x 25 km area
  • Choose your hub height (10m to 140m)
  • File includes elevation, roughness, wind speed distribution (Weibull A, k and sector-wise probability), and power density
  • Binary file included (WRB)
    The binary file is designed to address the lack of precision in ACSII WAsP wind resource grids and the limitations of using Weibull A, k and sector-wise probability. The binary file is currently included with every Basic WRG purchase and contains the same point data as Basic WRGs plus inflow angle by direction. A WRB file is more precise than a WRG because it uses single precision floating point numbers to give precision to at least 6 decimal places.  The ASCII WRG format is only precise to 2 or 3 decimal places. This can result in rounding of wind speeds to as much as 0.3% or more.

 

Sitewind

  • Format: WRF model WRG
  • Resolution: 50m
  • Fixed 50 km x 50 km area up to 100 km x 100 km
  • Choose your hub height (10m to 140m)
  • File includes elevation, roughness, wind speed distribution (Weibull A, k and sector-wise probability), and power density
  • Binary file included (WRB)
    The binary file is designed to address the lack of precision in ACSII WAsP wind resource grids and the limitations of using Weibull A, k and sector-wise probability. The binary file is currently included with every Basic WRG purchase and contains the same point data as Basic WRGs plus inflow angle by direction. A WRB file is more precise than a WRG because it uses single precision floating point numbers to give precision to at least 6 decimal places.  The ASCII WRG format is only precise to 2 or 3 decimal places. This can result in rounding of wind speeds to as much as 0.3% or more.