Wind turbine is a machine that consists of a column perpendicular to the ground and a turbine at its top and converts the wind (kinetic energy of the wind) into electricity.
Small wind turbines are used for a variety of applications, such as battery charging, while larger for power supply to homes. A number of such wind turbines form wind farms, which are a renewable energy source. Many countries have built wind farms to reduce the emission of pollutants and their degradation from fossil fuels.
Wind power is today an attractive solution to the problem of power generation.

Smart homes are equipped with technology that provides their residents with detailed online status information on their home and allows them to control all connected devices, even remotely, from a mobile or tablet.
Some examples of smart home appliances are the following: smart light switches, smart refrigerators, smart power meters, smart blinds and awnings smart air conditioning (heating, cooling), smart plant watering and automatic pet feeding devices, smart alarm and security camera setup etc .;
How does the smart home work?

The intelligent home system has control over all the electromechanical installations of a building. As a result, any control point can control any function that is embedded in the system.
By means of sensors, many of the repetitive energies that we do every day can automate in order to facilitate our daily routine and secondly to have significant energy savings. Remote control via mobile, internet, sms, telephone completes home control.
Smart homes can take a number of initiatives and plan the functions of the building in such a way that in combination with the bioclimatic design of the building can save energy or improve the comfort of life that this provides.
The smart home is especially useful for people with disabilities and the elderly.
In professional buildings, hotels, institutions, conference centers, theaters, etc. the creation and use of a lighting-only installation can save up to 75% energy.