Yosu Plant-1 power station — South Korea

Yosu Plant-1 power station is a 140.1 MW coal power station in Jeollanam-do, South Korea. It is operated by Lotte Chemical Corp. Based on its capacity (estimated), it can supply roughly 175k homes (estimated). It ranks #121 of 216 South Korea power plants by installed capacity. Its modelled annual emissions are 396,210 t CO₂/yr (Climate TRACE), equivalent to about 92k 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).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CT-5465.

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: GEM wiki operating-unit Fuel(s), dominant by operating MW >=80%, fetched 2026-07-05

In context: how this plant compares

At 140.1 MW, Yosu Plant-1 power station is below the median coal plant in South Korea (400 MW). 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.

~396,210 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 coal capacity

0.3% of 46,928 MW across 34 plants in this dataset

Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).

Capacity vs largest coal plants in South Korea

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

Owner

Operated by Lotte Chemical Corp.

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 (dry winter) climate (Köppen Cwa) — Northern Hemisphere, latitude 34.8°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 11% 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: 46/100 — 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

This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with marine 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 #29 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

• Yeosu Hanwha power station · Coal · 250 MW · Jeollanam-do
• Kumho Yeosu CHP power station · Coal · 264 MW · Jeollanam-do
• Yeosu · Coal · 679 MW · Jeollanam-do
• Yoesu Lotte · Gas · 80 MW · Jeollanam-do
• Honam · Coal · 500 MW · Jeollanam-do
• POSCO OFFGAS · Gas · 284 MW · Jeollanam-do

Location

Coordinates 34.8262, 127.6721 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions