Nuclear power plants can reduce water consumption by upgrading from once-through cooling systems to closed-loop or dry cooling technologies. In a closed-loop system, cooling water is recirculated through cooling towers, which allows the plant to reuse the same water supply repeatedly rather than drawing large volumes from natural sources.
Dry cooling technology, also known as air cooling, replaces water-based condensers with large fans that transfer heat directly to the atmosphere. While dry cooling can reduce water use by up to 90 percent, it can sometimes impact efficiency during extreme heat waves because air is less effective at absorbing heat than water. To mitigate this, engineers use advanced heat exchanger designs and hybrid systems that combine both water and air cooling to balance water conservation with high operational efficiency.
Transitioning to these technologies helps protect local aquatic ecosystems and makes nuclear plants more resilient to droughts and water scarcity. For more information on nuclear safety and technology, you can visit the International Atomic Energy Agency at https://www.iaea.org.
