Yangyang

Yangyang is a 1,000 MW hydro power station in Gangwon-do, South Korea. It is operated by Korea Electric Power Company. Based on its capacity (estimated), it can supply roughly 1,001,142 homes (estimated). It ranks #37 of 204 South Korea power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 0.6% of South Korea's electricity; the national grid averages 417 gCO₂/kWh (40.0% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1029856.

Capacity vs largest hydro plants in South Korea

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Korea Electric Power Company. All plants by this company →

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 38.0°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 44% above 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: 77/100 — this site sits in the top 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.

How it compares & nearby plants

The #1 largest hydro power plant of 36 in South Korea by capacity.

South Korea has 36 hydro power plants in this dataset, together about 6,063 MW of capacity.

Nearby power plants

• Shinan · Wind · 3 MW · Gangwon-do
• Gangwon · Wind · 98 MW · Gangwon-do
• Yeongdong · Coal · 325 MW · Gangwon-do
• Anin power station · Coal · 2,080 MW · Gangwon-do
• Soyang gang · Hydro · 200 MW · Gangwon-do
• Hwacheon · Hydro · 108 MW · Gangwon-do

Location

Coordinates 38.0163, 128.5467 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.