Wind energy is one of the oldest energy sources, whose most common example of its use in the nautical field is the use of sailing, which was used for the first time by the Egyptians since 4000 BC.
However, although the energy of the wind has been exploited by man for millennia, only today we are witnessing an unparalleled growth, due to technological improvements.
Wind energy is an energy source that exploits the kinetic capacities connected to wind to convert this source into mechanical energy and, in turn, into electricity: it is therefore kinetic energy, produced by the movement of the wind, precisely, which is the movement of air on the Earth’s surface, between areas of high pressure and areas of low pressure.
For the production of energy through the exploitation of wind power, are installed wind turbines (or wind turbines) that are normally combined in wind farms.
Wind farms are wind farms where towers, that is wind turbines, are very high in height, produce and transform wind energy into electricity. The operation of a wind farm is guaranteed by the presence of a medium voltage connection and a remote monitoring system. The transformation of wind energy into electricity takes place through the action of a transformer placed in a substation.

Building wind farms allows you to produce renewable energy, enjoying the following advantages:

• Clean energy: wind energy does not pollute and does not produce waste.
• Easy to find energy: it is easy to produce and can be found in a constant and continuous way, provided the location of the wind farm is adequate and sufficiently ventilated.
• Long-lasting machinery: geothermal power plants have less durable machinery that cannot be recycled, unlike those for wind farms, which can last about 25 years.
• Wind has no cost: in addition to being easy to find, the wind has no cost, unlike many other sources of energy.

It is the first source of renewable energy from a chronological point of view in the history of humanity, but not only: hydroelectric energy is also the first in terms of “quantity” since globally, in terms of installed power and production, is significantly higher than any other renewable source.
The water cycle – from evaporation to precipitation – has given the opportunity to create an important source of renewable energy: hydroelectric energy is obtained by exploiting the kinetic and potential energy of water.
Hydroelectric power allows to exploit the waterway of rivers to transform the movement of water into electricity. In Italy, for example, about one fifth of all electricity produced comes from hydroelectric power plants.
Hydropower is a renewable energy source produced by man-made works, namely dams, locks, canals and bridges. Through a hydroelectric basin, capable of collecting water in the dam’s artificial basin, the water is then conveyed at high speed downstream through forced pipelines. The water energy is transformed into electricity through a system of alternators and turbines.