This massive structure is so powerful, it can light up millions of homes every single day!

The biggest hydroelectric power station in the world is the **Three Gorges Dam**, located in China. It is built on the Yangtze River, which is the longest river in Asia. The dam is an engineering marvel and a major source of clean energy for the country.

The Three Gorges Dam is not only the biggest in terms of size, but also in terms of electricity generation capacity. It can produce more than **22,000 megawatts (MW)** of electricity. That is enough power to supply electricity to tens of millions of people. The dam has dozens of turbines that work together to convert the flow of river water into electrical energy.

Construction of the dam began in 1994 and it was completed in 2012. It took years of planning, billions of dollars, and a huge workforce to build it. While it is a great achievement in clean energy, it also caused environmental and social challenges. For example, many people had to leave their homes because areas were flooded to make space for the reservoir.

Still, the Three Gorges Dam plays a very important role in reducing air pollution. Since it produces energy using water, it doesn’t burn fuel or release harmful gases like coal power plants do.

The dam also helps control floods during the rainy season and improves shipping by allowing large boats to move safely through the river.

So when we talk about the biggest and most powerful hydroelectric dam in the world, the answer is clear.

✅ Final Answer: Three Gorges Dam (China).