A cooling pond and a cooling tower both serve the same basic purpose in a power plant: they remove excess heat from the water used in the plant's systems. The difference lies in how they do it. A cooling pond uses a large, open body of water where heated water from the plant is spread out and allowed to cool naturally through evaporation and contact with air. This process depends on environmental conditions like air temperature and wind.
This process depends on environmental conditions like air temperature and wind. In contrast, a cooling tower is a tall, engineered structure that cools water by forcing it to flow over surfaces while air is pushed or drawn through the tower, speeding up the cooling process. Cooling towers are more compact and efficient for sites with limited space or water, but they require more mechanical equipment and energy to operate. Cooling ponds, while simpler and more passive, need a large area of land and are often more affected by local climate.