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Saemangeum CHP power station

Coal power plant in Jeollabuk-do, South Korea. Approximate location 35.9379, 126.5661.

CoalJeollabuk-doSouth KoreasubcriticalCO₂ modelled

Saemangeum CHP power station is a 304 MW coal power station in Jeollabuk-do, South Korea. It is operated by OCI SE Co Ltd. Based on its capacity (estimated), it can supply roughly 380k homes (estimated). It ranks #99 of 216 South Korea power plants by installed capacity. Commissioned in 2016, it is around 10 years old — relatively modern. Its modelled annual emissions are 1,365,000 t CO₂/yr (Climate TRACE), equivalent to about 318k cars driven for a year. In context, coal supplies about 31.1% of South Korea's electricity; the national grid averages 417 gCO₂/kWh (40.0% low-carbon) (2025).

304Source-backed capacity
380,434homes powered (est.)
1,365,000t CO₂ / yr (Climate TRACE)
2016commissioned (~10 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CT-5430.

Data status

Known data

FacilitySaemangeum CHP power station Climate TRACE
CountrySouth Korea · Jeollabuk-do Climate TRACE
Coordinates35.9379, 126.5661 Climate TRACE
FuelCoal Climate TRACE
MW installed capacity304 MW Climate TRACE source record; scope not independently normalised
OwnerOCI SE Co Ltd Climate TRACE
Commissioned2016 Climate TRACE
Technologysubcritical Climate TRACE

Modelled source data

CO₂ emissions1,365,000 t CO₂/yr modelled · Climate TRACE

Calculated from dataset

Capacity rank in country#99 of 216 calculated
Fuel-specific rank in country#23 of 34 calculated
Capacity vs country/fuel peers0.76× · 400 MW median · 34 peers calculated
Homes-powered equivalent380,434 calculated
Climate13.0°C · HDD 2,479 derived from coordinates
Environmental severityC3 · 40/100 derived from coordinates

Not available

GWh reported / yrNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: GEM tracker 2026 (location L100000103473); fuel: Climate TRACE source-record fuel

In context: how this plant compares

At 304 MW, Saemangeum CHP power station is below the median coal plant in South Korea (400 MW). Technically it is described as subcritical. Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

~1,365,000 t CO₂/yr (modelled) — in everyday terms

This facility's annual emissions are roughly equivalent to:

318kpassenger cars driven for a year
178khomes' yearly energy use
23 milliontree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.

Capacity vs largest coal plants in South Korea

Dangjin: 6,040 MW6kDangjinTaean: 5,946 MW6kTaeanYeongheung: 5,080 MW5kYeongheungBoryeong (poryang): 4,400 MW4kBoryeong (…Hadong: 4,000 MW4kHadongSamcheonpo: 3,240 MW3kSamcheonpoGoseong Green power station: 2,080 MW2kGoseong Gr…Anin power station: 2,080 MW2kAnin power…

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

Owner

Operated by OCI SE Co Ltd.

Local climate & thermal context

This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 35.9°N — which shapes how much energy it can produce and how its output varies through the year.

13.0°Cannual mean temp
2,479heating degree-days (base 18°C)
678cooling degree-days (base 18°C)
6 melevation

Monthly mean temperature

J: 0 °CJF: 1 °CFM: 5 °CMA: 12 °CAM: 17 °CMJ: 21 °CJJ: 25 °CJA: 26 °CAS: 21 °CSO: 15 °CON: 9 °CND: 3 °CD26 °C

Heating degree-days here run 1% 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: 50/100 — this site sits in the mid third of the power plants we cover by heating degree-days.

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

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
40/100environmental-severity index
26.0°Cseasonal temperature swing
50 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

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 #23 largest coal power plant of 34 in South Korea by capacity.

South Korea has 34 coal power plants in this dataset, together about 46,928 MW of capacity.

Nearby power plants

Location

Coordinates 35.9379, 126.5661 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Saemangeum CHP power station?

Saemangeum CHP power station is a 304 MW source-record coal power plant in Jeollabuk-do, South Korea, commissioned in 2016.

How many homes can Saemangeum CHP power station power?

Its output is enough to supply roughly 380,434 homes (estimated).

Who operates Saemangeum CHP power station?

Saemangeum CHP power station is operated by OCI SE Co Ltd.

How much CO₂ does Saemangeum CHP power station emit?

Saemangeum CHP power station has modelled emissions of about 1,365,000 tonnes of CO₂ per year (Climate TRACE).

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