The largest operative solar pond project in the world is located in Bhuj, in the state of Gujarat. By maintaining distinct layers of saline water in the pond, solar heat is trapped within the water body. The brine then heats up water upto 70 degrees centigrade, to be used by a dairy to generate process steam. The dairy saves on fuel costs due to less burning of lignite, and the hot water is also used for washing milk cans.
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