In March 2009, the Andasol-1 solar thermal collector opened in Spain, the first of its kind in Europe. Later that year Andasol-2 was opened and in 2011 another Andasol collector became reality. In contrast to the common photovoltaic systems we see on rooftops, the thermal collectors store the sun’s heat in a big heat reservoir of molten salt, by reflecting the sunlight with parabolic mirrors pointed at the reservoir. Via thermal turbines this heat is be transformed into electricity, enough for up to 200 000 people.
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