Namjeju Power Complex — South Korea
Gas power plant in Jeju-do, South Korea. Approximate location 33.2368, 126.3405.
GasJeju-doSouth KoreaCCGT · HRSGCO₂ modelled
Namjeju Power Complex is a 487.7 MW gas power station in Jeju-do, South Korea. It is operated by Korea Southern Power Co Ltd. Based on its capacity (estimated), it can supply roughly 549k homes (estimated). It ranks #81 of 216 South Korea power plants by installed capacity. Commissioned in 2020, it is around 6 years old — recently built. Its modelled annual emissions are 438,030 t CO₂/yr (Climate TRACE), equivalent to about 102k cars driven for a year. In context, gas supplies about 27.9% 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 CT-5463.
Data status
Known data
Modelled source data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Capacity provenance
The public capacity above is the current source-record value. A 2026 tracker candidate lists 296 MW for Namjeju Power Complex, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: Climate TRACE; fuel: Climate TRACE
In context: how this plant compares
At 487.7 MW, Namjeju Power Complex is around the median gas plant in South Korea (515 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
~438,030 t CO₂/yr (modelled) — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.
Key facts
- Share of South Korea gas capacity
- 0.8% of 58,006 MW across 77 plants in this dataset
- Age among peers
- 49 of 67 dated gas plants in South Korea are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest gas plants in South Korea
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Korea Southern Power Co Ltd. 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 humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 33.2°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 32% 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: 37/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
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.
Site climate & environmental severity
This site sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #48 largest gas power plant of 77 in South Korea by capacity.
South Korea has 77 gas power plants in this dataset, together about 58,006 MW of capacity.
Nearby power plants
- Hallim Complex power station · Gas · 105 MW · Jeju-do
- Hangyeong · Wind · 21 MW · Jeju-do
- Jeju Offshore · Wind · 30 MW · Jeju-do
- Jeju Self Governing Wind Farm · Wind · 15 MW · Jeju-do
- Jeju · Oil · 228 MW · Jeju-do
- Bukeju · Coal · 150 MW · Jeju-do
Location
Coordinates 33.2368, 126.3405 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Namjeju Power Complex?
Namjeju Power Complex is a 487.7 MW gas power plant in Jeju-do, South Korea, commissioned in 2020.
Who operates Namjeju Power Complex?
Namjeju Power Complex is operated by Korea Southern Power Co Ltd.
How much CO₂ does Namjeju Power Complex emit?
Namjeju Power Complex has modelled emissions of about 438,030 tonnes of CO₂ per year (Climate TRACE).