How generate electricity
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Natural gas: turbines are driven directly by gases produced by combustion. Combined cycle are driven by both steam and natural gas. They generate power by burning natural gas in a gas turbine and use residual heat to generate steam. At least 20% of the worlds electricity is generated by natural gas.
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Electricity is generated at power stations. Different methods are used for generating electricity .In hydro power stations,the energy of falling water drives the turbine that runs the generator. In thermal power station,coal is burnt and heat is produced is used to boil water to generate steam .The steam is used to drive the turbine that runs the generator .Nowdays ,Nuclear energy is also used to produce electricity.
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