Spain Plugs-in Largest Solar-Tower Power Plant

Technology.am (Apr. 29, 2009) — Renewable energy technology firm Abengoa Solar on Monday reported its second solar tower near Seville, Spain generates 20 megawatts of electricity, exceeding its expectations.

solor-towor-pawerplantThe 531-foot solar tower, located near Seville, Spain, is called PS20, and it is the largest in the world with a capacity of 20 megawatts, enough electricity to supply 10,000 homes.

The sun reflects off the mirrors onto a receiver in the tower which makes steam from water to power a turbine and create electricity. The PS20 project has 1,255 of these heliostats, with each heliostat having a surface area of 1,291 square feet.

The traditional solar power uses rows of mirrored troughs that follow the sun over the course of the day. Solar tower technology is the successor technology to mirrored troughs and is being followed by a number of solar companies.

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