Longtan is a 6,300 MW hydro power station in Guangxi Zhuangzu Zizhiqu, China. It is operated by Longtan Hydropower Development Co. Ltd.. Based on its capacity (estimated), it can supply roughly 6,307,200 homes (estimated). It ranks #8 of 5,959 China power plants by installed capacity. Commissioned in 2009, it is around 17 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 13.2% of China's electricity; the national grid averages 525 gCO₂/kWh (41.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1000455.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Longtan Hydropower Development Co. Ltd..
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a humid subtropical (dry winter) climate (Köppen Cwa) — Northern Hemisphere, latitude 25.0°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 52% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 28/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.
In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
The #5 largest hydro power plant of 947 in China by capacity.
China has 947 hydro power plants in this dataset, together about 259,026 MW of capacity.
Coordinates 25.0277, 107.0431 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
