How Does production of electricity in a power plant demonstrate conservation of energy?
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- This is for a coal, gas, oil or biomass power station: The change in chemical energy (technically electrostatic potential energy in the bonds of the fuel) in the bonds of the fuel that is burnt is equal to the electricity plus the heat output by the power station (with a little bit of sound energy, which a) is technically heat and b) is a small contribution). In hydroelectric power, the change in gravitational potential energy of the water is equal to the electricity produced + heating of the power station + kinetic energy of the water afterwards. In wind power, the change in kinetic energy of the wind = electricity + heat in the turbine. In solar power, the light absorbed = heat + electricity output by the panel.
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