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Renewable energy

Renewable energy is sometimes called non-conventional energy. It is derived from regenerative resources or from other resources that can not be depleted. Almost 30% of the total energy consumption is renewable energy.

Renewable energy is used since a long time, but only recently mankind is using it to mass produce electricity. Because non-renewable energy is in general more polluting and exhausting, people try to use renewable energy more often.

World renewable energy 2005

world renewable energy 2005

Resources - Renewable Energy

 

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Biomass energy
Biomass is material of plants and animals that can be used for energy.
Geothermal energy
Geothermal energy uses heat energy from beneath the surface of the earth.
Hydroelectric energy
Fast-flowing water released from dams in mountainous areas can turn water turbines to produce electricity.
Solar energy
Solar cells convert sunlight into electrical energy.
Tidal and wave energy
Electricity can be obtained by the flow of water through turbines in a dam as the tide rises and falls.
Wind energy
Moving air turns the blades of windmills or generators to make electricity or to pump water out of the ground.

News about renewable energy


District Energy 101

Secretary Chu Announces U.S. Centers for U.S.-China Clean Energy Research - U.S. Energy Secretary Steven Chu announced today that two consortia will receive a total of $25 million over the next five years under the U.S.-China Clean Energy Research Center (CERC).


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