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MRD00274SPA.jpg
The power tower at the Planta Solar 20 (PS 20) concentrating solar power (CSP) project rises over a field of sunflowers. PS 20 produces 20 megawatts of electrity and its tower, at 160 metres, is the world's tallest.  The plant began electricity production in 2009 and is operated by Abengoa Solar.