in the Andalusian countryside of Southern Spain, near Seville, is a
giant 115 meter high concrete tower surrounded by a field of 624 huge
mirrors. These mirrors collect the sunlight and focus it at the top of
the concrete tower, where it heats water passing through pipes,
converting it into steam. This steam drives a series of turbines that
produce electricity. Simple, efficient, environment friendly and
spectacular !
These 624 parabolic mirrors each having a surface area of 120m² are
heliostats, that track the sun throughout the year, precisely focusing
the sunlight to the top of the tower at all times. The temperature at
the top rises to over 400'C (750'F).
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