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Sejong City

Gas power plant in Chungcheongnam-do, South Korea. Approximate location 36.4683, 127.2479.

GasChungcheongnam-doSouth Korea

Sejong City is a 550 MW gas power station in Chungcheongnam-do, South Korea. It is operated by Korea Midland Power Company. Based on its capacity (estimated), it can supply roughly 619,457 homes (estimated). It ranks #59 of 204 South Korea power plants by installed capacity. Commissioned in 2013, it is around 13 years old — relatively modern. In context, gas supplies about 27.9% of South Korea's electricity; the national grid averages 417 gCO₂/kWh (40.0% low-carbon) (2025).

550MW installed capacity
619,457homes powered (est.)
2013commissioned (~13 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1029902.

~867,240 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

202,154passenger cars driven for a year
113,099homes' yearly energy use
14,454,000tree seedlings grown 10 years to absorb it

Estimated, not measured: from installed capacity at a typical 45% load factor × a typical gas emission factor (~400 g CO₂/kWh, IPCC AR5 / US EIA). Actual emissions depend on plant efficiency and running hours.Equivalencies via US EPA Greenhouse Gas Equivalencies.

Capacity vs largest gas plants in South Korea

Incheon: 3,052 MW3kIncheonKOMIPO Incheon: 1,960 MW2kKOMIPO Inc…Dongducheon: 1,900 MW2kDongducheonBoryeong (CC): 1,800 MW2kBoryeong (…Busan (pusan): 1,800 MW2kBusan (pus…Seoincheon: 1,800 MW2kSeoincheonShinincheon: 1,800 MW2kShinincheonPocheon: 1,560 MW2kPocheon

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

Owner

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

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 36.5°N — which shapes how much energy it can produce and how its output varies through the year.

11.5°Cannual mean temp
2,896heating degree-days (base 18°C)
539cooling degree-days (base 18°C)
156 melevation

Monthly mean temperature

J: -3 °CJF: -1 °CFM: 4 °CMA: 11 °CAM: 17 °CMJ: 21 °CJJ: 24 °CJA: 25 °CAS: 20 °CSO: 13 °CON: 6 °CND: 0 °CD25 °C

Heating degree-days here run 18% 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: 60/100 — this site sits in the mid 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.

A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

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 #25 largest gas power plant of 46 in South Korea by capacity.

South Korea has 46 gas power plants in this dataset, together about 38,423 MW of capacity.

Nearby power plants

Location

Coordinates 36.4683, 127.2479 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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