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Investments in Joint Ventures 3 (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of joint ventures [line items] |  |  |
Total assets | ₩ 239,714,965 | ₩ 234,804,994 |
Total liabilities | 202,450,215 | 192,804,738 |
Sales | 87,476,410 | 70,546,024 | ₩ 60,012,375
Profit (loss) for the year | (4,716,144) | (24,429,108) | ₩ (5,215,581)
KEPCO-Uhde Inc. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets |  | 48 |
Total liabilities |  | 15 |
Sales |  | 0 |
Profit (loss) for the year |  | (84) |
Shuweihat Asia Power Investment B.V. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 142,680 | 135,646 |
Total liabilities | 20 | 29 |
Sales | 0 | 0 |
Profit (loss) for the year | 897 | (2,660) |
Shuweihat Asia Operation & Maintenance Company |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 4,421 | 3,037 |
Total liabilities | 1,116 | 71 |
Sales | 3,194 | 3,013 |
Profit (loss) for the year | 2,249 | 2,099 |
Waterbury Lake Uranium L.P. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 74,320 | 66,706 |
Total liabilities | 550 | 117 |
Sales | 0 | 0 |
Profit (loss) for the year | 0 | 0 |
ASM-BG Investicii AD |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 68,837 | 72,999 |
Total liabilities | 39,359 | 43,889 |
Sales | 10,931 | 16,056 |
Profit (loss) for the year | 1,359 | 6,230 |
RES Technology AD |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 58,152 | 62,345 |
Total liabilities | 29,387 | 32,079 |
Sales | 5,969 | 11,205 |
Profit (loss) for the year | (1,027) | 3,018 |
KV Holdings, Inc. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 12,968 | 24,149 |
Total liabilities | 2 | 1 |
Sales | 20 | 1 |
Profit (loss) for the year | 367 | 353 |
KEPCO SPC Power Corporation |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 288,140 | 267,904 |
Total liabilities | 26,778 | 29,082 |
Sales | 222,773 | 253,145 |
Profit (loss) for the year | 17,270 | 44,751 |
Gansu Datang Yumen Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 61,657 | 67,651 |
Total liabilities | 45,869 | 52,592 |
Sales | 10,684 | 10,048 |
Profit (loss) for the year | 791 | (1,161) |
Datang Chifeng Renewable Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 812,124 | 835,331 |
Total liabilities | 345,277 | 355,377 |
Sales | 117,833 | 140,343 |
Profit (loss) for the year | 25,055 | 42,889 |
Datang KEPCO Chaoyang Renewable Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 166,959 | 168,680 |
Total liabilities | 58,942 | 57,685 |
Sales | 23,638 | 29,459 |
Profit (loss) for the year | 1,597 | 4,919 |
Rabigh Electricity Company |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 2,556,848 | 2,520,946 |
Total liabilities | 1,855,234 | 1,855,836 |
Sales | 304,727 | 322,108 |
Profit (loss) for the year | 51,539 | 65,550 |
Rabigh Operation & Maintenance Company Limited |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 40,339 | 23,664 |
Total liabilities | 27,928 | 10,882 |
Sales | 31,301 | 32,572 |
Profit (loss) for the year | 6,676 | 9,176 |
Jamaica Public Service Company Limited |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 2,332,019 | 2,310,611 |
Total liabilities | 1,491,199 | 1,515,361 |
Sales | 1,400,582 | 1,499,897 |
Profit (loss) for the year | 87,307 | 69,458 |
KW Nuclear Components Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 42,363 | 40,381 |
Total liabilities | 460 | 2,013 |
Sales | 14,344 | 16,968 |
Profit (loss) for the year | 5,386 | 6,755 |
Busan Shinho Solar Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 31,863 | 36,868 |
Total liabilities | 5,188 | 9,991 |
Sales | 9,197 | 10,543 |
Profit (loss) for the year | 4,473 | 5,424 |
Global Trade Of Power System Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 2,398 | 5,628 |
Total liabilities | 277 | 3,222 |
Sales | 2,044 | 8,434 |
Profit (loss) for the year | (229) | 351 |
Expressway Solar-light Power Generation Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 13,065 | 14,248 |
Total liabilities | 2,691 | 4,740 |
Sales | 3,397 | 3,711 |
Profit (loss) for the year | 892 | 1,654 |
Amman Asia Electric Power Company |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 719,388 | 759,885 |
Total liabilities | 347,015 | 392,795 |
Sales | 21,772 | 28,665 |
Profit (loss) for the year | 33,811 | 39,090 |
KAPES, Inc. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 203,066 | 82,943 |
Total liabilities | 165,475 | 45,068 |
Sales | 32,294 | 20,006 |
Profit (loss) for the year | 2,150 | 3,797 |
Honam Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 31,183 | 34,028 |
Total liabilities | 14,938 | 17,522 |
Sales | 6,570 | 8,781 |
Profit (loss) for the year | 1,540 | 3,283 |
Korea Power Engineering Service Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 21,534 | 20,931 |
Total liabilities | 1,853 | 1,817 |
Sales | 11,248 | 9,176 |
Profit (loss) for the year | 1,203 | 500 |
Chun-cheon Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 565,972 | 629,202 |
Total liabilities | 447,820 | 521,212 |
Sales | 502,889 | 585,641 |
Profit (loss) for the year | 10,435 | 19,940 |
Yeonggwangbaeksu Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 73,854 | 80,042 |
Total liabilities | 50,936 | 59,070 |
Sales | 13,523 | 14,150 |
Profit (loss) for the year | 1,944 | 2,764 |
Nghi Son 2 Power LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 3,775,717 | 3,652,801 |
Total liabilities | 2,939,740 | 2,835,123 |
Sales | 825,701 | 589,023 |
Profit (loss) for the year | 33,505 | 102,436 |
Kelar S.A |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 691,104 | 689,802 |
Total liabilities | 493,325 | 514,085 |
Sales | 112,201 | 107,577 |
Profit (loss) for the year | 12,488 | 943 |
PT. Tanjung Power Indonesia |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 704,274 | 730,239 |
Total liabilities | 446,700 | 464,791 |
Sales | 111,138 | 99,169 |
Profit (loss) for the year | 21,854 | 13,619 |
Incheon New Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 1,404 | 2,633 |
Total liabilities | 377 | 755 |
Sales | 3,781 | 4,497 |
Profit (loss) for the year | 485 | 1,244 |
Seokmun Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 201,776 | 212,509 |
Total liabilities | 144,565 | 152,731 |
Sales | 54,575 | 61,513 |
Profit (loss) for the year | (1,581) | 12,064 |
Daehan Wind Power PSC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 144,260 | 145,065 |
Total liabilities | 111,407 | 117,219 |
Sales | 17,880 | 17,958 |
Profit (loss) for the year | 4,951 | 5,524 |
Barakah One Company |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 35,586,640 | 33,587,352 |
Total liabilities | 36,901,367 | 34,422,965 |
Sales | 1,243,735 | 498,129 |
Profit (loss) for the year | (230,503) | (444,338) |
Nawah Energy Company |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 569,982 | 338,883 |
Total liabilities | 568,147 | 337,134 |
Sales | 555,338 | 395,580 |
Profit (loss) for the year | 34 | 3 |
Momentum |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 13,449 | 7,315 |
Total liabilities | 12,821 | 6,280 |
Sales | 23,160 | 30,864 |
Profit (loss) for the year | 624 | 1,036 |
Daegu Green Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 515,354 | 551,431 |
Total liabilities | 429,204 | 459,881 |
Sales | 380,130 | 516,254 |
Profit (loss) for the year | (5,146) | 9,364 |
Yeonggwang Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 225,286 | 233,695 |
Total liabilities | 175,530 | 189,737 |
Sales | 36,326 | 31,221 |
Profit (loss) for the year | 11,672 | 6,700 |
Chester Solar IV SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 12,435 | 12,728 |
Total liabilities | 11,504 | 12,469 |
Sales | 2,119 | 1,521 |
Profit (loss) for the year | 395 | (174) |
Chester Solar V SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 4,124 | 4,364 |
Total liabilities | 4,002 | 4,315 |
Sales | 696 | 520 |
Profit (loss) for the year | 141 | 83 |
Diego de Almagro Solar SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 15,785 | 15,908 |
Total liabilities | 13,907 | 14,946 |
Sales | 3,114 | 1,877 |
Profit (loss) for the year | 931 | (288) |
South Jamaica Power Company Limited |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 482,866 | 521,558 |
Total liabilities | 267,307 | 289,359 |
Sales | 240,664 | 314,064 |
Profit (loss) for the year | 18,833 | 33,348 |
Daesan Green Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 237,663 | 245,826 |
Total liabilities | 174,261 | 190,918 |
Sales | 111,225 | 101,689 |
Profit (loss) for the year | 11,480 | (6,641) |
RE Holiday Holdings LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 340,773 | 351,243 |
Total liabilities | 172,589 | 180,503 |
Sales | 21,178 | 22,671 |
Profit (loss) for the year | 664 | 3,022 |
RE Pioneer Holdings LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 257,091 | 263,232 |
Total liabilities | 148,929 | 152,888 |
Sales | 14,136 | 15,701 |
Profit (loss) for the year | (2,164) | 369 |
RE Barren Ridge 1 Holdings LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 213,491 | 226,504 |
Total liabilities | 97,184 | 100,436 |
Sales | 11,915 | 11,740 |
Profit (loss) for the year | (1,979) | (903) |
RE Astoria 2 LandCo LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 14,116 | 13,517 |
Total liabilities | 242 | 319 |
Sales | 1,014 | 1,004 |
Profit (loss) for the year | 823 | 913 |
RE Barren Ridge LandCo LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 4,980 | 4,761 |
Total liabilities | 97 | 95 |
Sales | 393 | 389 |
Profit (loss) for the year | 329 | 357 |
Laurel SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 10,665 | 11,221 |
Total liabilities | 9,768 | 10,447 |
Sales | 1,646 | 1,424 |
Profit (loss) for the year | 169 | 54 |
KIAMCO KOWEPO Bannerton Hold Co Pty Ltd |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 30,081 | 29,517 |
Total liabilities | 84 | 74 |
Sales | 0 | 0 |
Profit (loss) for the year | (182) | (260) |
Chile Solar JV SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets |  | 75,246 |
Total liabilities |  | 55,609 |
Sales |  | 7,842 |
Profit (loss) for the year |  | 6,425 |
Cheong-Song Noraesan Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 54,086 | 55,948 |
Total liabilities | 41,352 | 41,464 |
Sales | 6,780 | 7,988 |
Profit (loss) for the year | 1,240 | 1,916 |
Chester Solar I SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 12,846 | 13,246 |
Total liabilities | 10,712 | 10,933 |
Sales | 1,620 | 1,094 |
Profit (loss) for the year | 214 | (221) |
Solar Philippines Calatagan Corporation |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 146,304 | 113,327 |
Total liabilities | 37,922 | 36,756 |
Sales | 16,420 | 17,728 |
Profit (loss) for the year | 9,121 | 10,194 |
Saemangeum Solar Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 34,905 | 35,890 |
Total liabilities | 5,994 | 6,817 |
Sales | 0 | 0 |
Profit (loss) for the year | (162) | (479) |
Chungsongmeon BongSan wind power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 83,147 | 81,030 |
Total liabilities | 80,102 | 75,207 |
Sales | 0 | 0 |
Profit (loss) for the year | (925) | (1,120) |
Jaeun Resident Wind Power Plant Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 95,529 | 89,756 |
Total liabilities | 87,893 | 82,047 |
Sales | 181 | 0 |
Profit (loss) for the year | (80) | (190) |
DE Energia SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 28,017 | 48,350 |
Total liabilities | 21,416 | 62,481 |
Sales | 5,006 | 5,959 |
Profit (loss) for the year | 21,118 | (1,109) |
Dangjin Eco Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 96,980 | 98,714 |
Total liabilities | 19,299 | 20,721 |
Sales | 3,789 | 4,185 |
Profit (loss) for the year | 589 | 700 |
Haemodum Solar Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 21,612 | 22,974 |
Total liabilities | 15,241 | 16,103 |
Sales | 2,216 | 2,556 |
Profit (loss) for the year | 299 | 581 |
Yangyang Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 124,550 | 107,471 |
Total liabilities | 103,766 | 85,829 |
Sales | 211 | 0 |
Profit (loss) for the year | (858) | (634) |
Horus Solar, S.A. De C.V. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 210,868 | 156,436 |
Total liabilities | 160,006 | 133,714 |
Sales | 20,586 | 5,568 |
Profit (loss) for the year | 26,865 | 5,628 |
Recursos Solares PV De Mexico II, S.A. De C.V. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 239,548 | 173,262 |
Total liabilities | 180,912 | 155,009 |
Sales | 4,920 | 468 |
Profit (loss) for the year | 24,984 | 457 |
Sunmex Renovables, S.A. De C.V. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 156,696 | 129,502 |
Total liabilities | 133,032 | 118,449 |
Sales | 0 | 0 |
Profit (loss) for the year | 6,232 | (1,008) |
Stavro Holding II A.B. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 91,342 | 85,883 |
Total liabilities | 28 | 27 |
Sales | 0 | 0 |
Profit (loss) for the year | (87) | 61 |
Solaseado Solar Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 346,793 | 363,492 |
Total liabilities | 304,142 | 325,262 |
Sales | 39,907 | 51,198 |
Profit (loss) for the year | 4,823 | 16,301 |
Yeongam Solar Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 326,429 | 329,714 |
Total liabilities | 279,779 | 281,791 |
Sales | 35,280 | 44,568 |
Profit (loss) for the year | 4,506 | 8,563 |
Samsu Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 67,150 | 71,123 |
Total liabilities | 51,247 | 54,254 |
Sales | 8,751 | 10,118 |
Profit (loss) for the year | 1,741 | 1,987 |
Pulau Indah Power Plant Sdn. Bhd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 800,300 | 760,536 |
Total liabilities | 720,459 | 675,853 |
Sales | 431 | 797 |
Profit (loss) for the year | 2,095 | 6,723 |
NH-Amundi Global Infrastructure Investment Private Investment Trust 21 |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 72,465 | 71,851 |
Total liabilities | 97 | 74 |
Sales | 7,569 | 4,850 |
Profit (loss) for the year | 7,080 | 5,431 |
Shin-han BNPP Private Investment Trust for East-West Sunlight Dream |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 17,230 | 17,341 |
Total liabilities | 22 | 22 |
Sales | 38 | 38 |
Profit (loss) for the year | (3) | (10) |
PT Barito Wahana Tenaga |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 512,846 | 447,688 |
Total liabilities | 0 | 0 |
Sales | 0 | 0 |
Profit (loss) for the year | 72,320 | 49,471 |
Cheongna Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 428,042 | 385,935 |
Total liabilities | 380,935 | 368,340 |
Sales | 119,530 | 100,200 |
Profit (loss) for the year | 29,511 | (889) |
Naepo Green Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 695,684 | 448,309 |
Total liabilities | 677,583 | 499,528 |
Sales | 312,592 | 8,905 |
Profit (loss) for the year | 53,343 | (34,347) |
Boim Combined Heat and Power Generation Co., Ltd. (formerly, Dayone Energy Co., Ltd.) |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 441,975 | 470,677 |
Total liabilities | 498,353 | 530,304 |
Sales | 212,997 | 278,363 |
Profit (loss) for the year | 5,544 | (12,893) |
OneEnergy Asia Limited |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 2,181,165 | 1,039,987 |
Total liabilities | 1,520,032 | 673,223 |
Sales | 1,149,944 | 0 |
Profit (loss) for the year | 94,298 | 16,041 |
KAS Investment I LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 52,806 | 61,907 |
Total liabilities | 0 | 861 |
Sales | (7,436) | 1,603 |
Profit (loss) for the year | (7,437) | 6,998 |
KAS Investment II LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 52,555 | 61,661 |
Total liabilities | 1 | 861 |
Sales | (7,444) | 1,592 |
Profit (loss) for the year | (7,445) | 6,967 |
Energyco LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 54,336 | 56,996 |
Total liabilities | 49,816 | 52,304 |
Sales | 6,599 | 7,898 |
Profit (loss) for the year | (173) | 2,258 |
CAES, LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 48,495 | 49,676 |
Total liabilities | 5 | 6 |
Sales | 0 | 0 |
Profit (loss) for the year | (2,388) | (547) |
Hapcheon Floating Photovoltaic Power Plant Inc. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 79,924 | 78,768 |
Total liabilities | 58,887 | 61,561 |
Sales | 12,679 | 12,705 |
Profit (loss) for the year | 4,266 | 3,061 |
Busan Industrial Solar Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 18,636 | 21,149 |
Total liabilities | 15,896 | 18,016 |
Sales | 2,378 | 3,190 |
Profit (loss) for the year | 106 | 901 |
Bitsolar Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 73,435 | 78,779 |
Total liabilities | 79,367 | 83,324 |
Sales | 8,249 | 9,557 |
Profit (loss) for the year | (1,125) | 261 |
Pulau Indah O&M Sdn. Bhd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 0 | 0 |
Total liabilities | 0 | 0 |
Sales | 0 | 0 |
Profit (loss) for the year | 0 | 0 |
Guadalupe Solar SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 10,646 | 10,148 |
Total liabilities | 8,811 | 8,790 |
Sales | 1,684 | 924 |
Profit (loss) for the year | 626 | (43) |
Omisan Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 150,813 | 142,274 |
Total liabilities | 126,853 | 117,881 |
Sales | 0 | 0 |
Profit (loss) for the year | (453) | (519) |
Foresight Iberian Solar Group Holding, S.L. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 94,972 | 94,181 |
Total liabilities | 86,049 | 81,997 |
Sales | 0 | 0 |
Profit (loss) for the year | (2,712) | (1,365) |
Yeongwol Eco Wind Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 109,716 | 87,856 |
Total liabilities | 102,143 | 83,281 |
Sales | 3,561 | 0 |
Profit (loss) for the year | 2,975 | (144) |
Gurae Resident Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 14,096 | 11,649 |
Total liabilities | 12,299 | 10,467 |
Sales | 652 | 0 |
Profit (loss) for the year | 615 | (19) |
Cheongju Eco Park Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 145,956 | 152,139 |
Total liabilities | 115,347 | 116,639 |
Sales | 38,907 | 66,260 |
Profit (loss) for the year | (4,892) | 17,319 |
Enel X Midland Photovoltaic, LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 12,825 | 10,289 |
Total liabilities | 115 | 1,010 |
Sales | 2,128 | 1,684 |
Profit (loss) for the year | 850 | 837 |
Geumsungsan Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 142,703 | 125,324 |
Total liabilities | 125,602 | 115,196 |
Sales | 13,568 | 0 |
Profit (loss) for the year | 6,570 | (1,770) |
KEPCO KPS CARABAO Corp. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 375 | 2,025 |
Total liabilities | 468 | 1,582 |
Sales | 0 | 611 |
Profit (loss) for the year | (467) | (327) |
Prime Swedish Holding AB |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 83,699 | 77,942 |
Total liabilities | 218 | 114 |
Sales | 0 | 0 |
Profit (loss) for the year | (524) | (577) |
Goheung New Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 177,924 | 136,682 |
Total liabilities | 146,175 | 113,393 |
Sales | 29,246 | 0 |
Profit (loss) for the year | 8,460 | (1,591) |
Gunsan Land Solar Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 144,435 | 158,371 |
Total liabilities | 108,848 | 121,785 |
Sales | 23,523 | 28,828 |
Profit (loss) for the year | (974) | 12,154 |
Capman Lynx SCA, SICAR |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 139,262 | 112,718 |
Total liabilities | 132,430 | 102,810 |
Sales | 1,427 | 504 |
Profit (loss) for the year | (12,401) | (16,780) |
International Offshore Power Transmission Holding Company Limited |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 6,555 | 4,680 |
Total liabilities | 2,486 | 71,468 |
Sales | 0 | 0 |
Profit (loss) for the year | (195) | (68,093) |
Pyeongchang Wind Power Co., Ltd |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 60,535 | 70,599 |
Total liabilities | 39,452 | 45,661 |
Sales | 9,361 | 14,524 |
Profit (loss) for the year | (2,354) | 3,693 |
Eumseong Eco Park Co., Ltd |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 153,927 | 136,909 |
Total liabilities | 126,998 | 119,736 |
Sales | 46,679 | 0 |
Profit (loss) for the year | 5,609 | (636) |
Songsan Green Energy Co., Ltd |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets |  | 5,500 |
Total liabilities |  | 0 |
Sales |  | 0 |
Profit (loss) for the year |  | (69) |
Changwon Nu-ri Energy Co., Ltd |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 13,183 | 1,490 |
Total liabilities | 29 | 0 |
Sales | 0 | 0 |
Profit (loss) for the year | (44) | (10) |
Hasami Wind Farm Corporation |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets |  | 3,100 |
Total liabilities |  | 0 |
Sales |  | 0 |
Profit (loss) for the year |  | (23) |
PungBack Wind Farm Corporation |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 70,330 | 46,957 |
Total liabilities | 51,804 | 31,667 |
Sales | 0 | 0 |
Profit (loss) for the year | (255) | (3,089) |
Trumbull Asset Management, LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 1,697 | 316 |
Total liabilities | 497 | 0 |
Sales | 5,955 | 656 |
Profit (loss) for the year | 887 | 323 |
S-Power Chile SpA |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 2,240 | 2,430 |
Total liabilities | 2,390 | 2,450 |
Sales | 1,327 | 1,334 |
Profit (loss) for the year | (139) | 22 |
Seungmun Green Energy |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 144,600 | 46,283 |
Total liabilities | 115,034 | 18,843 |
Sales | 10,879 | 0 |
Profit (loss) for the year | 2,127 | 367 |
Seobusambo highway photovoltaics Co., Ltd |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 9,838 | 8,286 |
Total liabilities | 5,362 | 4,453 |
Sales | 1,051 | 217 |
Profit (loss) for the year | 624 | ₩ 265 |
Yangyang Suri Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 111,682 |  |
Total liabilities | 78,552 |  |
Sales | 0 |  |
Profit (loss) for the year | (3,069) |  |
KEPCO for Power Company |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 235,212 |  |
Total liabilities | 234,487 |  |
Sales | 0 |  |
Profit (loss) for the year | (3,610) |  |
Taebaek Wind Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 26,606 |  |
Total liabilities | 3,385 |  |
Sales | 7,384 |  |
Profit (loss) for the year | 3,752 |  |
Jeonju Bio Green Energy Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 4,916 |  |
Total liabilities | 0 |  |
Sales | 0 |  |
Profit (loss) for the year | (84) |  |
Kumyang Eco Park Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 13,831 |  |
Total liabilities | 1,395 |  |
Sales | 0 |  |
Profit (loss) for the year | (71) |  |
Jeongeup Green Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 11,243 |  |
Total liabilities | 5,462 |  |
Sales | 0 |  |
Profit (loss) for the year | (1,343) |  |
Hadong E-factory Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 1,544 |  |
Total liabilities | 399 |  |
Sales | 0 |  |
Profit (loss) for the year | (13) |  |
Namyangju Combined Heat and Power Co., Ltd. |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 7,000 |  |
Total liabilities | 0 |  |
Sales | 0 |  |
Profit (loss) for the year | 0 |  |
Wadi Noor Solar Power Company SAOC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 70,963 |  |
Total liabilities | 69,288 |  |
Sales | 0 |  |
Profit (loss) for the year | 0 |  |
Fairhaven Energy Storage LLC |  |  |
Disclosure of joint ventures [line items] |  |  |
Total assets | 0 |  |
Total liabilities | 0 |  |
Sales | 0 |  |
Profit (loss) for the year | ₩ 0 |  |

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