Wind is a renewable resource because it is limitless. Wind power is the fastest growing electricity generation technology. It is a result of the sun heating the earth unevenly; some patches become warmer than others. The seasonal changes in temperature constantly generate wind, thus producing a fuel source that will never exhaust. As long as the sun shines, the wind will blow and people will harness it to power their lives.

How it works:

The Sun heats our earth unevenly causing some patches to become warmer than others.

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The ultimate source energy is the sun which provides the earth with light, heat and radiation. Every hour the sun radiates onto the Earth more than enough energy to satisfy global energy needs for an entire year.

When sun's energy is harnessed and made useable it is called solar energy. While many technologies derive fuel from one or the other from form of solar energy, there are also technologies that directly transform the sun's energy into electricity.

Solar energy is our earth's core source of renewable energy since generating electricity directly from sunlight does not deplete any of the earth's natural resources and supplies the earth with energy continuously.

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Ocean waves are caused by the wind blowing across the sea. There is tremendous amount of energy stored in the ocean waves. Waves are a powerful source of energy.

The total power of waves breaking around the coastlines all over the world is estimated at 2-3 million megawatts. One way to harness wave energy is to focus the waves into a narrow channel which increases their power, size and impact. The waves can then be directed into a catch basin or may be used directly to spin turbines. There are a few small wave energy plants, but no big commercial ones. The best potential can be harnessed on small, on-shore sites for immediate future. These produce enough energy to power local communities.

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Bioenergy is derived from biological sources such as wood, waste, and alcohol fuels. In a narrow way it is a synonym to biofuel; the fuel derived from biological sources. In its broader sense it includes biomass which is the biological material used as a biofuel. This is a common misconception among masses, as bioenergy is the energy extracted from the biomass, as the biomass is the fuel and the bioenergy is the energy contained in the fuel.

Burning wood for heat is a good example of Bioenergy. In more complicated terms, bioenergy can be formed by using genetically modified bacteria to create cellulose ethanol. Although oil and coal are made from organic mater, they are not considered to be bioenergy as they were not living recently.

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