China stands by far as the world's largest producer of hydroelectricity, accounting for roughly one-third of the entire global installed capacity. Driven by decades of aggressive national infrastructure development, rapid industrialization, and massive engineering projects—such as the monumental Three Gorges Dam—China generates hundreds of gigawatts of clean hydropower. Other major global contributors sharing top-tier status in absolute hydroelectric output include nations with vast river basins and geographic advantages, such as Brazil, Canada, and the United States.