Calculated energy production values for a wind farm require several inputs in order to properly evaluate the estimated energy generation of a site. The topography for a wind farm and the boundaries of the site may be loaded into the software as ESRI shape files. The wind flow on the site should be characterized by on-site measurements and extrapolated out to the rest of the site, and the historical air density on the site must be evaluated.
The efficiencies and loss factors specific to the site should be understood, and a turbine layout and power curve must be selected. Once this basic site information has been entered, the type of analysis method chosen to calculate energy is dependent upon the characteristics of the wind farm being assessed.
The energy production of a farm is greatly dependent upon the wake effects from upwind turbines, and the use of an accurate wake model is key to making an accurate estimate. WindFarmer has several different wake models available to take into account the specific challenges of the broad range of wind farms in development and in operation within the industry.