A wind farm is a large area of land in which wind mills are spread out. The more they spin they more energy they generate, they generate energy when the wind is anyway between 12 - 75 Kmph.
The purpose of a wind farm is to provide quality energy in an economically friendly way through the use of wind.
Wind turbines (in a wind farm) convert kinetic energy of the wind into electrical energy. Not to be confused with wind mills - that turn the kinetic energy of the wind into mechanical energy.
so more energy can be created
Wind is a futuristic energy source geared to replace fossil fuel in the near future. However, it has limitations in terms of its velocity and volume required to move wind turbines. Due to this limitation, the wind energy has to be extracted in specific locations where it has enough volume and velocity to be economically extracted.
Wikipedia has several articles on wind farms, including ones that list locations of wind farms in various countries. Energy saving sites, such as BP and Energy California, offer information on what a wind farm is.
The amount of wind turbines in a wind farm can vary from one farm to another. They can have as few as five or as many as 150 wind turbines. One of the largest wind farms is Alta Wind Energy center in Kern County, California. It has over 4,800 wind turbines.
Kabertene wind farm, in Algeria, has 12 turbines with a total nominal power of 10,200 kW.
A windturbine is a single device to extract the energy from the wind and transform it into electrical energy. A windfarn usually consists of several windturbines.
Betz law states that no more than 59% of the energy in the wind can be captured by a free standing wind mill.
Wind moves the blades of the wind turbines. The turbines turn an electrical generator, which feeds electricity into the network of powerlines.