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A Heliostat is a sophisticated device used to harness solar energy by tracking the movement of the sun. It consists of a mirror or an array of mirrors that pivot throughout the day to continually reflect sunlight toward a fixed target, such as a solar power tower, a specific location needing daylight, or scientific instruments. The primary purpose of a heliostat is to maximize the efficiency of solar energy capture, thus boosting the performance of various solar power systems.

Heliostats are pivotal in concentrating solar power (CSP) plants, where they direct sunlight to a central receiver mounted on top of a tower. The concentrated solar energy heats a fluid, which creates steam to drive turbines for electricity generation. Their ability to precisely follow the sun's trajectory, with the help of computer-controlled motors and GPS systems, ensures that the maximum amount of solar radiation is harnessed throughout the day.

Beyond energy production, heliostats also find applications in providing natural light to buildings in urban environments, reducing the need for artificial lighting and thereby lowering energy consumption. They are also instrumental in scientific research, especially in fields that require controlled, consistent sunlight exposure. By capturing and directing sunlight, heliostats play a crucial role in promoting sustainability and advancing the green economy.