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Solar Thermal: How It Works Concentrated Solar Thermal (CST) is used to produce heat or electricity through the use of mirrors or lenses and tracking systems to focus a large area of sunlight into a small area. The concentrated light is then used as heat or as a heat source for a power plant. CST systems vary by their methods of collecting solar energy, with the three most common systems being the Linear Concentrator, Parabolic Dish and the Solar Power Tower. Linear Concetrator Systems        Parabolic Dish        Solar Tower |
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