World Power Plants

Longtan Dam6,300 MW Hydroelectric

HydroRenewableVerified: Mar 2026

The Longtan Hydropower Plant is a pivotal hydropower generation facility situated in Guangxi, China, with geographical coordinates of 25.0277° N and 107.0431° E. With a substantial capacity of 6300 MW, this power plant plays a significant role in bolstering the renewable energy sector within the national energy mix. Since its commissioning in 2009, Longtan has operated as a vital resource for energy generation, harnessing the immense power of water through its advanced hydroelectric technology. The facility utilizes a dam-based system, which captures and stores water, releasing it through turbines to generate electricity efficiently. This method not only ensures a stable and continuous power supply but also contributes to flood control and irrigation in the region. Longtan is owned and operated by Longtan Hydropower Development Co. Ltd., a key player in China's hydropower industry. The plant's strategic position along the Hongshui River enhances its importance in the local energy landscape, providing essential power to the Guangxi region and supporting the national grid. As part of China's broader energy policy, which emphasizes the transition towards cleaner energy sources, Longtan aligns with the country's goals to reduce carbon emissions and increase reliance on renewable energy. The hydropower plant’s capacity significantly aids in meeting the energy demands of the surrounding communities and industries, highlighting its crucial role in supporting economic growth and sustainable development. In conclusion, the Longtan Hydropower Plant stands as a testament to China's commitment to renewable energy, showcasing the benefits of hydropower in achieving energy security and environmental sustainability.

Capacity
6,300 MW

6.30 GW

Commissioning Year
2009

17 years old

Owner
Longtan Hydropower Development Co. Ltd.
Location
25.0277°, 107.0431°

China, Asia

Context & rankings
  • 10. largest of 4,431 plants in China
  • #34 worldwide by installed capacity
  • #18 of 8,493 Hydroelectric plants worldwide
  • 0.39% of the installed capacity of China
Age & fleet comparison

17 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Longtan Hydropower Development Co. Ltd. operates 1 plants totalling 6,300 MW

Regional density

6 plants within 100 km, 260 MW combined

Nearest plant: Rongge Hydro. (56.2 km)

Location

Coordinates:: 25.027700, 107.043100
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Longtan Dam is a hydro power plant producing approximately 22075 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
China
Continent
Asia
Data Source
Global Power Plant Database

Longtan Hydropower Plant: A Key Player in China's Renewable Energy Landscape

The Longtan Hydropower Plant, with a capacity of 6300 MW, is a significant contributor to China's renewable energy sector. Commissioned in 2009 and owned by Longtan Hydropower Development Co. Ltd., the facility harnesses the power of water to generate electricity, aligning with China's broader goals of sustainable development and reducing reliance on fossil fuels. Situated in the Guangxi Zhuang Autonomous Region, the plant utilizes the water flow of the Longtan River, which is part of the larger hydroelectric network in the region, underscoring the importance of hydropower in the country's energy mix.

As a hydroelectric power plant, Longtan converts the kinetic energy of flowing water into electricity. The technical design of the plant includes a large dam that creates a reservoir, allowing for water storage and regulation of flow. The facility utilizes turbines that spin as water passes through them, generating electricity in a clean and efficient manner. This method of power generation is particularly advantageous as it produces no direct emissions, making it a low-impact source of energy compared to fossil fuel-based power plants.

The Longtan Hydropower Plant plays a crucial role in China's energy sector, contributing significantly to the national grid and supporting the country's energy security. With China being one of the largest consumers of energy globally, the integration of renewable energy sources like hydropower is essential for meeting growing demand while addressing environmental concerns. The plant not only meets local energy needs but also supports regional development by providing stable electricity supply, which is vital for industries and improving living standards in nearby areas.

In terms of environmental impact, hydropower plants, including Longtan, generally present a more sustainable alternative to traditional power generation methods. While the construction of the dam and reservoir can have localized ecological effects, the Longtan plant is designed with measures to mitigate such impacts, including fish passage systems and careful management of water resources. Moreover, the shift towards renewable energy reduces greenhouse gas emissions, contributing to global efforts against climate change.

Regionally, Longtan serves as a critical infrastructure component, enhancing energy accessibility in Guangxi and neighboring provinces. The plant also provides employment opportunities and stimulates economic growth in the area. As part of China's extensive investment in renewable energy, Longtan exemplifies the transition towards a more sustainable energy future, showcasing the potential of hydropower to meet energy needs while minimizing environmental footprints. Overall, Longtan Hydropower Plant stands as a testament to China's commitment to harnessing its natural resources responsibly and efficiently.

ChinaEnergy Profile

4,431
Total Plants
1617.1 GW
Total Capacity
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