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No energy resource can renew energy, by the First Law of Thermodynamics: energy cannot be created. Because solar energy is abundant, it is sometimes assumed to be infinitely renewable. The solar energy driving the wind and solar panels on Earth has to be replaced from the sun, by the Second Law of Thermodynamics: heat can only flow from hotter to colder places. The only hotter place that can replace the solar energy converted on Earth is the Sun. If this was not so, the Earth would cool as incoming solar energy was converted, eventually, to low entropy heat, at ambient temperature, by the Third Law of Thermodynamics. Thus wind and solar technologies do not access renewable energy. Nor do any other technologies, including hydro.

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