With our development, nowadays, some important and prestigious companies are creating clean or renewable electricity, processes of creation of electricity, how wind power, solar energy, and other many methods for that.
This kind of energies are have been integrating with use of cars, phones, and sometimes with ecological houses, looking that in a near future we can use this sort of energies, and can save our world.
Everyone of this kind of energy is really expensive, because we don’t have the needed thing to the production and creation of each one of the structure needed. And depends of technologic progress of each country, because sometimes is more expensive, pay to foreign company to building this structures.
However, the productivity system, for example, of each tower of wind power, ensures a help considerable about of energy for a city or a country.