With more and more fuels getting wasted and used, there are very few options remaining. Bio-fuel is one of the options and to add to it is the use of solar panels for driving motors and making electricity. The third option is harnessing the wind power.

Wind is a powerful source of energy that has been harnessed for different uses for centuries. More and more scientists and researchers feel that wind can be used effectively as a renewable energy source and this can be done only when power within the moving air can be harnessed properly.

photo credit: cincooldesigns

The Wind Energy Industry has grown rapidly since the 1990’s and is considered as one of the fastest growing sectors in the power generation industry. Some of the European countries have even installed wind turbines that have been in operation for almost 20 years now and this entire operation has been extremely successful as well. Using wind turbines to harness wind power to create energy have brought down the production costs and are viable option for the coal fired power stations.

According to a study, the UK has the largest potential wind energy resource in the entire Europe and hence wind is being regarded their most promising future source of renewable energy technologies. As of today the wind turbines in the UK are producing electricity that is being delivered to almost 380,000 households and reaching around 1 million people. A salient point of the use of wind energy is that it has reduced carbon dioxide emissions by almost 1.49 million tones per annum.

The question is how can wind be converted into energy? The answer is: by using a wind turbine. The wind turbine is basically a type of rotating device just like a huge fan that can convert the kinetic energy present in the wind into mechanical energy. When this mechanical energy is used by any type of machinery like a pump then such a machine is known as a windmill. If the same mechanical energy is converted to electricity then the machine that does the conversion is called a wind generator or a wind turbine. It is also known as a wind energy converter (WEC) or a wind power unit (WPU).

Surprisingly the first use of the wind machines was for grinding grains as early as 200 B.C in Persia. It was also introduced in the prosperous and powerful Roman Empire in 250 A.D. The year 1900 saw the maximum number of windmills being used in Denmark. Almost 2700 windmills were installed to provide the much needed mechanical load to pumps and gave a peak power of 35MW.

Why turbines should be used to make electricity from wind

Wind turbines can effectively help in creating mechanical energy, which can be used for multiple purposes including assisting in the generation of power and electricity. Some of the other uses include:

• One of the salient points is that there is only a one time installation cost after which the electricity that is produced using a wind turbine will be free.
• It is a source of clean renewable energy that will not generate any greenhouse gases or emit carbon dioxide or even produce any dangerous wastes.
• Each unit of electricity produced by a wind turbine displaces one from every conventional power station. Wind turbines have been commissioned in the UK and have been extremely successful in prevent the emission of almost one and a three-quarter millions tonnes of carbon dioxide every year.
• Wind is a reliable and abundant source. UK being the windiest country in Europe has abundance of wind energy that can be used for making electricity.
• Wind power contributes significantly to the overall energy generation in any country. Denmark is one of the countries that gets almost 20% of its electricity from wind power
• Wind turbines use an extremely robust technology that is designed for operation locally as well as remotely and requires only periodic maintenance.

Wind turbines might be the answer for larger wind projects. For house owners there are diy kits that can be an alternativ when you are going to build wind generator.

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To find out how efficient wind turbines or actually wind farms are, you need to know how they work. The wind turbines accumulate the power of the wind in two steps: the propeller blades are rotated by the wind, and the propeller then drives a shaft. This spinning shaft is connected to a generator. The rotating action cranks the generator, and this is the way the electricity is generated. Actually the system is very like hydropower, but in this case the wind is the energy source rather than falling water.  With only one wind turbine you will not get really much electricity and these smaller turbines are meant to power one or maybe a couple of houses.

photo credit: thedailyenglishshow

The strength in wind farms is the combination of many wind turbines in one district, which all are working together to produce electricity. The energy can then be used by communities through existing utility grids or stored in batteries.  Modern wind turbines can also turn to catch the wind as it gusts from different angles, a factor which makes them far more efficient than before. The larger the turbine’s blades and the taller the turbine’s height will increase the efficiency as well. This is important to keep in mind when you are planning to build wind generator.

The accurate efficiency of wind farms is very difficult to define. This is because there are that many variables that are unknown or hard to predict. The terrain, amount of wind, size of turbines and so on are variables that always differ. Often, one wind mill will convert about 21 percent of the power in wind to electricity. The most efficient production is between 6 and 19 miles an hour of wind speed.

While wind technology has not went to a point where no energy is lost while harnessing it, it is fair to say that it is favorable compared to other renewable sources. It may take a while for the whole world to catch on to using wind as a power source. The fact is that it has definitely become an important alternative energy source. Countries such as Denmark and China are absolutely investing a lot into this kind of renewable energy.

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• efficiency of wind turbines