Globalization and technological advancement has contributed towards an increase in the number of industries in the world. In the process of production, fuel is required to run some machines; however, this fuel is a major source of pollution to the environment. Fossil fuels, for example, emit gases (when burnt) that are harmful to human beings and the environment at large. Kyoto protocol, which is aimed at reducing the amount of gases emitted in the atmosphere, noted that among the major emitters of green house gases is burning of fossil fuels. To sustain production of goods and services to feed the world populations, there is need to have reliable sources of energy. Reliable sources of energy need to be renewable; they include wind energy, solar energy and hydro-energy; wind energy is a dependable source of energy although it remains the least used among the available renewable sources of energy (Burton 1-23). This paper discusses wind energy; it will look into how the energy is produced, its cost effectiveness advantage and disadvantages of using the energy. Wind energy Wind is moving air; it is caused by non-uniform distribution of heat due to solar energy in different regions, which causes movement of hot from relatively hot places to cold areas. It blows from area of high pressure to areas of low pressure. Wind has a potential of producing approximately 100 billion watts per year of power. The technology involved in wind energy is converting kinetic energy into electric energy. Wind has kinetic energy, which rotates turbines for electricity generation. When wind is “harvested”, it can be used to produce electricity energy to be used in industries, home and in offices. How wind energy is produced Wind power is derived from using the kinetic energy that wind has as it blows on the earth’s service, wind is air moving from one area to another; when in movement it has some energy. Along the way of the wind, Wind turbines are set up; the turbines are rotated by the moving air; then convert the kinetic energy in the wind to mechanical energy, the mechanical power produced at this stage can be used for various purposes that include grinding grain or pumping water. Furthermore, the energy can be converted into electricity power by the use of generator or dynamos, after the conversion, it can then be used to provide energy to homes, offices and factories. Wind as a Cost effective source of energy When compared with other sources of energy, wind energy is relatively cheap in maintaining the structures. To put up a wind energy generator, it uses a lot of money and resources; but to maintain the plant is cheap. This makes the net cost lower. The cost of electricity from wind is the cheapest in the world and thus companies and people can utilize the important product at an affordable cost. From an indirect approach, the following is the cost effectiveness of wind energy: It is a renewable source of energy The energy can be used today and in the future without reducing. The energy comes from natural occurring, which can be tapped to produce energy; the energy can be used repeatedly without limiting the potential that it has. It is also considered as clean technology