It is a group of wind turbines capture wind energy to transform it into electrical energy.
An example is the Horse Hollow Energy Center, one of the largest wind farms in the world. It is located in Taylor, Texas (E.U.) and covers 19,000 hectares of land, has a capacity of 736 MW with its 421 turbines.
Wind turbines can be installed on land or at sea (offshore). The most common are those that are installed on land. The number of wind turbines with a park varies and depends on the available surface and the characteristics and wind speed. Before installing a wind park is studied, the study may last up to one year. The parks are built in phases, with each phase adds some power according to the number of wind turbines. So the same wind farm can start with a low or medium power, but after several years of development can exceed the largest parks in the world.
Wind energy is a developing technology and every year more wind farms around the world are added. In addition, existing parks are constantly expanding to achieve more energy power. Because of this, the order and power of the largest wind farms are in constant transition.
For countries that have coast, offshore wind farms can be an important source of energy. These wind turbines take advantage of the constant wind blowing over the sea. Installation and maintenance is a bit more complicated because of its location, however for some countries is a very good choice. For example, the UK has 27 offshore wind farms with a combined capacity of 5,000 MW.
In Europe and other places where geography does not include large flat spaces, wind farms are smaller and produce less energy. However, the fact that they have less power does not diminish their value as sources of clean energy. Wind power currently contributes more than 10% of electricity throughout the European Union and is produced mainly in Germany and Spain. In 2014 the countries using wind energy at a higher rate compared to its total energy consumption were Denmark (39%), Cape Verde (20-30%), Portugal (25%), Spain (20%), Ireland ( 18%) and Germany (13%). Small installations also allow energy production in municipalities, communities and universities.