The World’s Most Powerful Power Plant Doesn’t Use Uranium—and Produces 3x More Energy Than Any Nuclear Reactor

I’ll never forget standing at the edge of the Yangtze River, watching the massive spillway gates of the Three Gorges Dam open and close like the breath of a sleeping giant. With a staggering 22,500 MW of installed capacity, this hydroelectric marvel outpaces even the largest nuclear complex by a factor of three—no uranium required.

The Three Gorges Dam: 32 turbines delivering 22.5 GW of power

The dam’s 32 main turbines each churn out 700 MW, supplemented by two smaller 50 MW units, combining for a total capacity that eclipses nearly every other power plant on Earth. In 2020 alone, it generated a record-breaking 111.8 billion kWh, showcasing its renewable energy credentials and reliability on an epic scale.

Impact and controversies surrounding the dam

Constructed between 1994 and 2012 at a cost exceeding $20 billion, the project reshaped the Yangtze River’s ecosystem and displaced over a million residents. As I chatted with local fishermen in Yichang, many praised the dam’s flood control benefits but lamented the loss of ancestral fishing grounds. Despite these social and environmental challenges, the dam remains central to China’s effort to curb climate change by reducing reliance on coal power.

How it stacks up against other hydroelectric giants

To put its might in perspective, consider the following:

• Baihetan Dam (China): 16 000 MW

• Itaipu Dam (Brazil/Paraguay): 14 000 MW

• Xiluodu Dam (China): 13 860 MW

• Belo Monte Dam (Brazil): 11 233 MW

The Three Gorges facility leads the pack, underscoring the dominant role of hydroelectricity in large-scale power generation.

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Outshining nuclear and fossil fuel plants

Even the Kashiwazaki-Kariwa nuclear power station in Japan—formerly the world’s largest at 8 212 MW—doesn’t come close. Likewise, Poland’s Bełchatów coal plant, with its 5 420 MW capacity, pales in comparison. These contrasts highlight how massive dams can deliver unparalleled output without the risks associated with radioactive waste or air pollution.

The future of mega-scale power projects

While the Three Gorges Dam currently reigns supreme, ambitious plans like the 39 000 MW Grand Inga project in the Democratic Republic of Congo could one day take its crown—if realized. Back home, China is also pushing solar boundaries; its 3.5 GW photovoltaic farm in the northwest desert demonstrates a commitment to diversifying large-scale renewables.

China’s green energy journey continues

From the roar of turbines at the Three Gorges site to the hum of solar panels in arid lands, China’s energy landscape is shifting. By leaning into hydro and solar power, the country aims to meet soaring demand while steering the world toward a cleaner, more sustainable future.