The main use of nuclear energy is to provide grid electricity; nuclear power today accounts for nearly one-tenth of global electricity generation, and that pace is on the upswing: In 2024, nuclear reactors worldwide supplied a new record amount of electricity, eclipsing the previous peak set nearly two decades earlier. Nuclear output has risen across the globe and is being particularly driven by growth in Asia: China and India have made concerted efforts to increase their reliance on nuclear power, plus reactors have restarted in Japan.