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Power Plants in South Korea

South Korea has 230 power plants mapped on the OverWatts open energy atlas — the 19th-largest fleet of the 155 countries that hold any, and 0.8% of the world's mapped total. Of these, 112 operating and 110 under construction or proposed. Operating generation capacity totals 128 GW across 112 utility-scale plants of 100 MW and above. The largest is Hanbit nuclear power plant (6.2 GW).

The largest owner-operators are Korea Midland Power Co Ltd (17), Korea Hydro & Nuclear Power (KHNP) Co Ltd (16) and Korea South-East Power Co Ltd (16) — Korea Midland Power Co Ltd alone is named on 7% of them. Half of South Korea's power plants in service predate 2011 (median commissioning year of the 112 with a known date), 41 came online in the past decade and the oldest still listed is Cheongpyeong hydroelectric plant, dating from 1943. 110 are in the pipeline, led by Sinan-gun wind project (3.2 GW), proposed. They account for 64% of every energy asset OverWatts maps in South Korea.

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230
Power Plant in South Korea
#19
of 155 countries
128 GW
Operating capacity
110
In construction / proposed

Operating generation capacity by fuel

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Largest power plants in South Korea

Who owns South Korea's power plants

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

When they were built

Median commissioning year 2011 · oldest Cheongpyeong hydroelectric plant (1943) · newest Jeju Hanlim wind farm (2025) · 112 of 230 carry a start date

Under construction & proposed

How South Korea compares · power plants by country

Frequently asked

How many power plants are there in South Korea?
OverWatts maps 230 power plants in South Korea — 0.8% of the world's mapped total, the 19th-largest national fleet of the 155 countries with any.
What is the largest power plant in South Korea?
Hanbit nuclear power plant, at 6.2 GW, operated by Korea Hydro & Nuclear Power.
How much power-generation capacity do South Korea's power plants have?
About 128 GW operating across 112 plants, with a further 86.0 GW under construction or proposed. That covers utility-scale sites of 100 MW and above, so it sits below national installed capacity wherever distributed generation is large.
Who owns the power plants in South Korea?
Korea Midland Power Co Ltd is named as owner or operator on the most — 17 of 230 (7%). Next are Korea Hydro & Nuclear Power (KHNP) Co Ltd (16), Korea South-East Power Co Ltd (16) and Korea East-West Power Co Ltd (14).
How old are South Korea's power plants?
The median commissioning year is 2011, across the 112 in service with a known start date. The oldest still listed is Cheongpyeong hydroelectric plant (1943); 41 came online in the past ten years.
What new power plants are being built in South Korea?
110 projects are under construction or proposed. The largest are Sinan-gun wind project (3.2 GW), Dangjin power station (3.0 GW) and Hadong power station (3.0 GW).

Other asset classes in South Korea

Cement Plant 34LNG Terminal 21Grid Storage 18Iron & Steel Plant 18Chemical Plant 14Export Terminal 13Refinery 4Storage / Tank Farm 2Iron Ore Mine 2Data Centre 1Coal / Uranium Mine 1

Power Plants in other countries

China 11,537United States 3,831India 1,675Brazil 879Spain 653Australia 615Philippines 489Russia 461Canada 452Vietnam 392Japan 387Germany 335