The primary use of rare earth elements in the U.S. is in military defense systems and renewable energy technologies.

Although rare earth elements are essential for many high-tech applications, military defense systems and renewable energy technologies are the main uses for them in the United States. These components are necessary for the creation of strong magnets, which are employed in cutting-edge defense technology such as communication devices, radar, and missile systems. Rare earth elements are also essential for renewable energy systems, such as solar panels, electric car motors, and wind turbines, where they enhance energy storage and efficiency. Securing a steady supply of rare earth elements is a major priority because of their significance in national security and green technology.