High Quality Content by WIKIPEDIA articles! The Planta Solar 20 or PS20 solar power tower is a solar thermal energy plant in Sanlucar la Mayor near the southern Spanish city of Seville. It is the world's most powerful solar power tower. The 20 megawatt solar power tower produces electricity with large movable mirrors called heliostats. Solar thermal energy (STE) is a technology for harnessing solar energy for thermal energy (heat). Solar thermal collectors are defined by the USA Energy Information Administration as low-, medium-, or high-temperature collectors. Low temperature collectors are flat plates generally used to heat swimming pools. Medium-temperature collectors are also usually flat plates but are used for creating hot water for residential and commercial use.

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