Most of the largest operational onshore wind farms are located in Germany, China and the United States. For example, the largest wind farm in the world, Gansu Wind Farm in China has a capacity of over 6,000 MW of power in 2012 with a goal of 20,000 MW by 2020. The Alta Wind Energy Center in California, United States is the largest onshore wind farm outside of China, with a capacity of 1,020 MW.
Individual Vortexis turbines can be interconnected with a medium voltage (usually 34.5 kV) power collection system and communications network. At a substation, this medium-voltage electric current is increased in voltage with a transformer for connection to the high voltage transmission system. Construction of a land-based wind farm requires installation of the collector system and substation, and possibly access roads to each turbine site.
Onshore turbine installations in hilly or mountainous regions should be positioned on ridge lines at least three kilometers or more inland from the nearest shoreline. Such positioning is done to exploit the topographic acceleration as the wind accelerates over a ridge. The additional wind speeds gained in this way can increase energy produced because more wind goes through the Vortexis turbines.
Currently in the United States there are many large wind farms under construction and these include Sinus Holding Wind Farm (700 MW), Lincs Wind Farm (270 MW), Lower Snake River Wind Project (343 MW), Macarthur Wind Farm (420 MW), Considering those positive developments, Wind Power Systems will tip the scales by adding its more efficient Vortexis Turbine Wind Systems into the mix.
Since meteorological wind data alone is usually not sufficient for accurate siting of a large wind power project, using wind atlas measurements, potential sites will screened on the basis those wind measurements. Collection of site specific data for wind speed and direction is crucial to determining site potential in order to finance the project.