The bathroom has evolved to become more practical, particularly with the displacement of the geyser.
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Sopogy produces a micro Concentrated solar system (microCSP) system based on parabolic trough which can be installed above building or homes, the heat can be used for water heating or solar air conditioning, a steam turbine can also be installed to produce electricity.
Solar water heating systems have become popular in China, where basic models start at around 1,500 yuan (US$235), much cheaper than in Western countries (around 80% cheaper for a given size of collector).