The precise identification of the existing restrictions, obstacles and facilities for using energy resources in the country necessitates the scientific and accurate calculation and evaluation of the amount of exploitation of the existing potentials of energy and the renewable energies conveyors development process within the country.

 

 Iran is considered to be one of the richest countries all over the world concerning different energy resources. Why it holds great unrenewable fossil fuel resources like oil and gas on one hand and it has a great potential regarding the renewable energies like wind on the other hand.

 

Using the wind energy is growing increasingly compared with other energy resources used in most of the countries of the world, after the development of the environmental points of view and economical directions in the exploitation of unrenewable energy resources. Using wind turbines technology may be a suitable choice compared with other unrenewable energy resources for the following reasons:

 

 

In some developed countries such as Germany, Denmark, USA, Spain, England, etc, different huge and small wind turbines have been made and so many plans are understudy in order to continue researches and apply wind energy to generate electricity with multi-megawatt units.

 

Regarding the existence of the great number of windy places in Iran, designing and manufacturing windmills was highly typical from 2000 years BC and now there exists a good atmosphere for the development and exploitation of wind turbines. Wind-electricity generators could be an appropriate substitution for gas and steam power plants. Studies and evaluations regarding the wind potential estimation in Iran illustrates that in 26 sections of the country (including more than 45 suitable sites) the nominal capacity of the sites, considering a general efficiency of 33% is approximately 6500 megawatt, however, it is noteworthy that the nominal capacity of all power plants of the country is already 3400. In wind turbines wind kinematical energy is transformed to mechanical and then electrical energy.

 

When mean wind speed is in the range of 5 to 25, technical usage of wind power would be possible. Producible potential of wind power in the world is estimated about 110 Ej (each Ej equals to 1018 J), 40 MW of which is the capacity installed by the end of 2003 (1382-solar calendar) all over the word.

 

The advantages of using this energy are the self-contained wind turbine which does not need any fuel, supplying a part of needed electrical energy, wind energy being proportionally less than fossil energies in long term, diversification of energy resources and constructing stabilized energy system, high manure possibility in exploitation (from watts to megawatts), needing no water and non-existence of environmental contamination.