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Jeju

Oil power plant in Jeju-do, South Korea. Approximate location 33.5352, 126.5961.

OilJeju-doSouth KoreaCCGT · HRSGCO₂ modelled

Jeju is a 228 MW oil power station in Jeju-do, South Korea. It is operated by Korea Midland Power (KOMIPO). Based on its capacity (estimated), it can supply roughly 171k homes (estimated). It ranks #106 of 216 South Korea power plants by installed capacity. Commissioned in 2018, it is around 8 years old — recently built. Its modelled annual emissions are 130,500 t CO₂/yr (Climate TRACE), equivalent to about 30k cars driven for a year. In context, oil supplies about 1.0% of South Korea's electricity; the national grid averages 417 gCO₂/kWh (40.0% low-carbon) (2025).

228Source-backed capacity
2HRSG unit(s)
171,195homes powered (est.)
130,500t CO₂ / yr (Climate TRACE)
2018commissioned (~8 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1000193.

Data status

Known data

FacilityJeju WRI
CountrySouth Korea · Jeju-do WRI
Coordinates33.5352, 126.5961 WRI
FuelOil WRI
MW installed capacity228 MW WRI source record; scope not independently normalised
OwnerKorea Midland Power (KOMIPO) WRI
Commissioned2018 WRI
TechnologyCCGT · HRSG WRI

Modelled source data

CO₂ emissions130,500 t CO₂/yr modelled · Climate TRACE

Calculated from dataset

Capacity rank in country#106 of 216 calculated
Fuel-specific rank in country#3 of 5 calculated
Capacity vs country/fuel peers1.00× · 228 MW median · 5 peers calculated
Homes-powered equivalent171,195 calculated
Climate14.1°C · HDD 1,993 derived from coordinates
Environmental severityC4 · 44/100 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.

Capacity provenance

The public capacity above is the current source-record value. A 2026 tracker candidate lists 228 MW for Jeju thermal power station, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).

Capacity claim grade: A1_APPLY_CANDIDATE_LOW_DELTA - recommended action: candidate_primary_after_spot_check - confidence: medium_high_after_sample. This follows a claim-based data model: value + scope + source + confidence, rather than silently overwriting records.

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 L100000401414); fuel: WRI source-record fuel

In context: how this plant compares

At 228 MW, Jeju is around the median oil plant in South Korea (228 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). Oil-fired plants burn heavy fuel oil or diesel, usually as peaking or backup capacity on islands and grids without gas pipelines; high fuel cost keeps their utilisation low.

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

~130,500 t CO₂/yr (modelled) — in everyday terms

This facility's annual emissions are roughly equivalent to:

30kpassenger cars driven for a year
17khomes' yearly energy use
2.2 milliontree seedlings grown 10 years to absorb it

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

Capacity vs largest oil plants in South Korea

Ulsan: 3,000 MW3kUlsanPyeongtaek: 1,400 MW1kPyeongtaekJeju: 228 MW228JejuCheongju CHP plant: 58 MW58Cheongju C…Hyundai Ulsan Factory power plant: 22 MW22Hyundai Ul…

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

Owner

Operated by Korea Midland Power (KOMIPO). All plants by this company →

Local climate & thermal context

This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 33.5°N — which shapes how much energy it can produce and how its output varies through the year.

14.1°Cannual mean temp
1,993heating degree-days (base 18°C)
580cooling degree-days (base 18°C)
242 melevation

Monthly mean temperature

J: 4 °CJF: 4 °CFM: 8 °CMA: 12 °CAM: 16 °CMJ: 20 °CJJ: 24 °CJA: 25 °CAS: 22 °CSO: 16 °CON: 11 °CND: 6 °CD25 °C

Heating degree-days here run 19% 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: 43/100 — 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 corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
44/100environmental-severity index
21.7°Cseasonal temperature swing
27 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 #3 largest oil power plant of 5 in South Korea by capacity.

South Korea has 5 oil power plants in this dataset, together about 4,708 MW of capacity.

Nearby power plants

Location

Coordinates 33.5352, 126.5961 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Jeju?

Jeju is a 228 MW source-record oil power plant in Jeju-do, South Korea, commissioned in 2018.

How many homes can Jeju power?

Its output is enough to supply roughly 171,195 homes (estimated).

Who operates Jeju?

Jeju is operated by Korea Midland Power (KOMIPO).

How much CO₂ does Jeju emit?

Jeju has modelled emissions of about 130,500 tonnes of CO₂ per year (Climate TRACE).

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