POSCO OFFGAS

POSCO OFFGAS is a 284 MW gas power station in Jeollanam-do, South Korea. Based on its capacity (estimated), it can supply roughly 319,865 homes (estimated). It ranks #92 of 204 South Korea power plants by installed capacity. Its measured emissions of 491,210 t CO₂/yr (Climate TRACE) are equivalent to about 114,501 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-5459.

491,210 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to Climate TRACE.

Capacity vs largest gas plants in South Korea

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

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 (dry winter) climate (Köppen Cwa) — Northern Hemisphere, latitude 34.9°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.

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 #38 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

• Gwangyang Works · Gas · 830 MW · Jeollanam-do
• Gwangyang POSCO · Gas · 500 MW · Jeollanam-do
• Kwangyang · Gas · 1,071 MW · Jeollanam-do
• Honam · Coal · 500 MW · Jeollanam-do
• Yoesu Lotte · Gas · 80 MW · Jeollanam-do
• Hadong · Coal · 4,000 MW · Jeollanam-do

Location

Coordinates 34.9104, 127.739 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.