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Consolidated Subsidiaries - Summary of Financial Information of Consolidated Subsidiaries (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure - Summary of financial information of consolidated subsidiaries [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 period | (4,716,144) | (24,429,108) | ₩ (5,215,581)
Korea Hydro & Nuclear Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 70,535,018 | 69,129,625 |
Total liabilities | 45,660,916 | 42,843,974 |
Sales | 10,798,378 | 10,386,091 |
Profit (loss) for the period | 151,638 | (16,382) |
Korea South-East Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 13,158,245 | 13,855,071 |
Total liabilities | 6,964,695 | 7,410,881 |
Sales | 7,761,713 | 8,972,991 |
Profit (loss) for the period | 196,522 | 71,662 |
Korea Midland Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 15,309,205 | 16,062,605 |
Total liabilities | 10,368,698 | 10,776,943 |
Sales | 7,611,821 | 8,629,165 |
Profit (loss) for the period | (1,844) | (58,173) |
Korea Western Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 12,710,246 | 13,459,054 |
Total liabilities | 7,648,441 | 8,125,312 |
Sales | 6,915,233 | 8,112,727 |
Profit (loss) for the period | 126,519 | 106,361 |
Korea Southern Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 13,405,076 | 14,011,354 |
Total liabilities | 7,807,334 | 8,296,983 |
Sales | 7,298,989 | 9,304,362 |
Profit (loss) for the period | 226,811 | (68,315) |
Korea East-West Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 11,683,112 | 12,079,954 |
Total liabilities | 5,626,034 | 5,818,789 |
Sales | 5,571,885 | 6,925,094 |
Profit (loss) for the period | 139,013 | 2,888 |
KEPCO Engineering & Construction Company, Inc. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 854,704 | 815,533 |
Total liabilities | 307,396 | 272,119 |
Sales | 545,092 | 505,291 |
Profit (loss) for the period | 32,654 | 17,954 |
KEPCO Plant Service & Engineering Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,585,380 | 1,555,453 |
Total liabilities | 318,597 | 344,702 |
Sales | 1,523,031 | 1,425,913 |
Profit (loss) for the period | 161,849 | 97,881 |
KEPCO Nuclear Fuel Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,101,960 | 949,455 |
Total liabilities | 622,157 | 490,215 |
Sales | 284,066 | 304,405 |
Profit (loss) for the period | 43,533 | 31,508 |
KEPCO KDN Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 733,434 | 734,439 |
Total liabilities | 301,713 | 166,272 |
Sales | 738,833 | 739,453 |
Profit (loss) for the period | 65,495 | 42,584 |
KEPCO International HongKong Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 133,915 | 128,784 |
Total liabilities | 0 | 0 |
Sales | 0 | 0 |
Profit (loss) for the period | 8,795 | (216) |
KEPCO International Philippines Inc. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 72,830 | 127,744 |
Total liabilities | 0 | 101 |
Sales | 0 | 0 |
Profit (loss) for the period | 4,891 | 9,976 |
KEPCO Gansu International Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 7,226 | 7,125 |
Total liabilities | 608 | 598 |
Sales | 0 | 0 |
Profit (loss) for the period | (23) | (22) |
KEPCO Philippines Holdings Inc. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 180,592 | 191,634 |
Total liabilities | 96 | 129 |
Sales | 0 | 0 |
Profit (loss) for the period | 8,802 | 39,346 |
KEPCO Philippines Corporation |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 2,607 | 3,799 |
Total liabilities | 0 | 14 |
Sales | 0 | 0 |
Profit (loss) for the period | 127 | 102 |
KEPCO Ilijan Corporation |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 142,711 | 231,132 |
Total liabilities | 800 | 3,642 |
Sales | 0 | 23,263 |
Profit (loss) for the period | 3,718 | 16,455 |
KEPCO Lebanon SARL |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets |  | 1,890 |
Total liabilities |  | 10,482 |
Sales |  | 0 |
Profit (loss) for the period |  | 20 |
KEPCO Neimenggu International Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 284,280 | 269,582 |
Total liabilities | 4,346 | 3,917 |
Sales | 0 | 0 |
Profit (loss) for the period | 15,021 | 9,938 |
KEPCO Shanxi International Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 707,447 | 597,635 |
Total liabilities | 329,539 | 222,186 |
Sales | 0 | 0 |
Profit (loss) for the period | (3,875) | (11,312) |
KOMIPO Global Pte Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 411,249 | 388,071 |
Total liabilities | 32,900 | 1,817 |
Sales | 0 | 0 |
Profit (loss) for the period | 17,174 | 58,030 |
KEPCO Netherlands B.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 141,088 | 137,454 |
Total liabilities | 45 | 64 |
Sales | 0 | 0 |
Profit (loss) for the period | 3,856 | 8,570 |
KEPCO Australia Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 749 | 579 |
Total liabilities | 34 | 11 |
Sales | 0 | 0 |
Profit (loss) for the period | 131 | 102 |
KOSEP Australia Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 79,308 | 74,180 |
Total liabilities | 7,990 | 13,097 |
Sales | 29,675 | 52,271 |
Profit (loss) for the period | 10,665 | 24,443 |
KOMIPO Australia Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 86,077 | 81,216 |
Total liabilities | 4,014 | 10,327 |
Sales | 29,676 | 52,272 |
Profit (loss) for the period | 9,248 | 23,368 |
KOWEPO Australia Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 86,074 | 81,696 |
Total liabilities | 3,571 | 10,184 |
Sales | 29,675 | 52,271 |
Profit (loss) for the period | 9,001 | 22,745 |
KOSPO Australia Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 32,828 | 41,872 |
Total liabilities | 3,923 | 10,174 |
Sales | 29,675 | 52,271 |
Profit (loss) for the period | 10,329 | 24,362 |
KEPCO Middle East Holding Company |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 121,015 | 116,731 |
Total liabilities | 107,611 | 102,054 |
Sales | 0 | 0 |
Profit (loss) for the period | (1,548) | (634) |
Qatrana Electric Power Company |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 491,627 | 513,277 |
Total liabilities | 208,707 | 247,027 |
Sales | 26,779 | 24,354 |
Profit (loss) for the period | 20,949 | 22,578 |
KHNP Canada Energy Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 155,242 | 107,200 |
Total liabilities | 12,379 | 6,218 |
Sales | 0 | 0 |
Profit (loss) for the period | 392 | 149 |
KEPCO Bylong Australia Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 44,557 | 44,034 |
Total liabilities | 465,231 | 437,852 |
Sales | 0 | 0 |
Profit (loss) for the period | (16,669) | (45,880) |
Korea Waterbury Uranium Limited Partnership |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 20,772 | 20,934 |
Total liabilities | 44 | 224 |
Sales | 0 | 0 |
Profit (loss) for the period | (67) | (116) |
KEPCO Holdings de Mexico |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,171 | 728 |
Total liabilities | 2,621 | 1,974 |
Sales | 0 | 0 |
Profit (loss) for the period | (121) | (1,363) |
KST Electric Power Company, S.A.P.I. de C.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 631,348 | 653,830 |
Total liabilities | 490,470 | 528,315 |
Sales | 93,843 | 232,893 |
Profit (loss) for the period | 19,657 | 23,122 |
KEPCO Energy Service Company |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 2,028 | 2,238 |
Total liabilities | 716 | 2,173 |
Sales | 10,193 | 7,015 |
Profit (loss) for the period | 251 | (211) |
KEPCO Netherlands S3 B.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 70,613 | 71,326 |
Total liabilities | 16,710 | 16,419 |
Sales | 0 | 0 |
Profit (loss) for the period | 1,769 | 4,465 |
PT. KOMIPO Pembangkitan Jawa Bali |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 17,303 | 15,753 |
Total liabilities | 3,929 | 3,232 |
Sales | 23,639 | 22,488 |
Profit (loss) for the period | 1,579 | 3,668 |
PT. Cirebon Power Service |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 2,936 | 2,316 |
Total liabilities | 714 | 784 |
Sales | 9,457 | 9,602 |
Profit (loss) for the period | 672 | 355 |
KOWEPO International Corporation |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 0 | 0 |
Total liabilities | 10 | 10 |
Sales | 0 | 0 |
Profit (loss) for the period | 0 | 0 |
KOSPO Jordan LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 19,387 | 22,854 |
Total liabilities | 3,881 | 6,964 |
Sales | 17,665 | 45,009 |
Profit (loss) for the period | 7,082 | 7,657 |
EWP America Inc. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 46,954 | 47,775 |
Total liabilities | 4,032 | 2,595 |
Sales | 14,549 | 21,717 |
Profit (loss) for the period | 895 | 4,337 |
KNF Canada Energy Limited |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 2,261 | 2,116 |
Total liabilities | 34 | 34 |
Sales | 0 | 0 |
Profit (loss) for the period | (56) | (59) |
EWP Barbados 1 SRL |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 434,690 | 395,067 |
Total liabilities | 14,217 | 901 |
Sales | 2,448 | 3,230 |
Profit (loss) for the period | 36,566 | 34,260 |
Gyeonggi Green Energy Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 180,176 | 220,414 |
Total liabilities | 214,822 | 226,517 |
Sales | 80,630 | 112,524 |
Profit (loss) for the period | (28,549) | (26,004) |
PT. Tanggamus Electric Power |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 214,892 | 227,638 |
Total liabilities | 150,483 | 163,106 |
Sales | 2,127 | 3,781 |
Profit (loss) for the period | (2,230) | 5,778 |
Gyeongju Wind Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 90,616 | 98,513 |
Total liabilities | 49,982 | 55,579 |
Sales | 19,807 | 24,888 |
Profit (loss) for the period | 6,716 | 9,711 |
KOMIPO America Inc. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 579,403 | 571,200 |
Total liabilities | 318,295 | 317,903 |
Sales | 39,323 | 34,059 |
Profit (loss) for the period | 3,376 | (3,293) |
PT. EWP Indonesia |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 90,650 | 93,390 |
Total liabilities | 132 | 5 |
Sales | 0 | 0 |
Profit (loss) for the period | 9,590 | 4,100 |
KEPCO Netherlands J3 B.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 153,324 | 135,213 |
Total liabilities | 13,634 | 63 |
Sales | 0 | 0 |
Profit (loss) for the period | 15,289 | 19,396 |
Korea Offshore Wind Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 334,444 | 376,449 |
Total liabilities | 143,827 | 192,335 |
Sales | 40,313 | 52,526 |
Profit (loss) for the period | 6,497 | 13,083 |
Global One Pioneer B.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 143 | 135 |
Total liabilities | 44 | 41 |
Sales | 0 | 0 |
Profit (loss) for the period | (85) | (68) |
Global Energy Pioneer B.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 336 | 320 |
Total liabilities | 44 | 40 |
Sales | 0 | 0 |
Profit (loss) for the period | (81) | (64) |
Mira Power Limited |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 403,843 | 416,750 |
Total liabilities | 318,557 | 310,529 |
Sales | 2,683 | 57,135 |
Profit (loss) for the period | (1,590) | 12,394 |
KOSEP Material Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 4,974 | 3,985 |
Total liabilities | 542 | 662 |
Sales | 4,834 | 4,589 |
Profit (loss) for the period | 908 | 775 |
Commerce and Industry Energy Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 73,671 | 79,172 |
Total liabilities | 29,611 | 32,147 |
Sales | 33,050 | 31,068 |
Profit (loss) for the period | (2,901) | (3,730) |
KEPCO KPS Philippines Corp. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 5,775 | 5,294 |
Total liabilities | 884 | 600 |
Sales | 4,608 | 5,232 |
Profit (loss) for the period | 97 | 1,004 |
KOSPO Chile SpA |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 166,643 | 159,500 |
Total liabilities | 75,619 | 70,037 |
Sales | 0 | 0 |
Profit (loss) for the period | 0 | (2,811) |
PT. KOWEPO Sumsel Operation and Maintenance Services |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 26 | 25 |
Total liabilities | 260 | 252 |
Sales | 0 | 0 |
Profit (loss) for the period | 0 | (94) |
Hee Mang Sunlight Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 5,877 | 5,877 |
Total liabilities | 2,403 | 2,606 |
Sales | 689 | 862 |
Profit (loss) for the period | 202 | 304 |
Fujeij Wind Power Company |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 216,082 | 213,113 |
Total liabilities | 158,081 | 163,690 |
Sales | 0 | 0 |
Profit (loss) for the period | 15,067 | 16,564 |
KOSPO Youngnam Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 360,026 | 425,000 |
Total liabilities | 255,761 | 312,831 |
Sales | 410,173 | 568,224 |
Profit (loss) for the period | (7,965) | 10,878 |
Chitose Solar Power Plant LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 98,911 | 109,964 |
Total liabilities | 84,228 | 94,366 |
Sales | 14,447 | 14,384 |
Profit (loss) for the period | 2,059 | 1,615 |
KEPCO Energy Solution Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 322,529 | 317,392 |
Total liabilities | 15,367 | 6,147 |
Sales | 14,151 | 33,638 |
Profit (loss) for the period | 5,384 | 138 |
KEPCO Solar Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 246,273 | 243,221 |
Total liabilities | 36,127 | 25,405 |
Sales | 23,234 | 24,778 |
Profit (loss) for the period | 8,367 | 9,305 |
KOSPO Power Services Ltda. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 6,976 | 6,722 |
Total liabilities | 7,086 | 4,762 |
Sales | 17,634 | 17,911 |
Profit (loss) for the period | (211) | (358) |
Energy New Industry Specialized Investment Private Investment Trust |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 454,888 | 451,762 |
Total liabilities | 3,364 | 4,338 |
Sales | 24,030 | 24,725 |
Profit (loss) for the period | 10,812 | 7,093 |
KOEN Bylong Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 11 | 11 |
Total liabilities | 128 | 119 |
Sales | 0 | 0 |
Profit (loss) for the period | 0 | (12) |
KOMIPO Bylong Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 13 | 11 |
Total liabilities | 147 | 122 |
Sales | 0 | 0 |
Profit (loss) for the period | (20) | (33) |
KOWEPO Bylong Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 12 | 8 |
Total liabilities | 142 | 94 |
Sales | 0 | 0 |
Profit (loss) for the period | (43) | (7) |
KOSPO Bylong Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 388 | 25 |
Total liabilities | 541 | 148 |
Sales | 0 | 0 |
Profit (loss) for the period | (20) | (17) |
EWP Bylong Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 13 | 8 |
Total liabilities | 13 | 54 |
Sales | 0 | 0 |
Profit (loss) for the period | 46 | 1 |
KOWEPO Lao International |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 13,038 | 8,248 |
Total liabilities | 223 | 87 |
Sales | 10,270 | 10,010 |
Profit (loss) for the period | 6,268 | 11,185 |
KEPCO US Inc. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets |  | 91 |
Total liabilities |  | 0 |
Sales |  | 0 |
Profit (loss) for the period |  | (19,181) |
KEPCO Mangilao Holdings LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 90,445 | 112,948 |
Total liabilities | 41,898 | 40,558 |
Sales | 775 | 21,743 |
Profit (loss) for the period | 785 | 21,166 |
Mangilao Investment LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 206,714 | 258,674 |
Total liabilities | 15 | 4 |
Sales | 0 | 0 |
Profit (loss) for the period | (1) | (1) |
KEPCO Mangilao Solar, LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 206,600 | 240,736 |
Total liabilities | 1,918 | 373 |
Sales | 13,593 | 8,870 |
Profit (loss) for the period | 826 | (14,818) |
Jeju Hanlim Offshore Wind Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 459,229 | 185,357 |
Total liabilities | 388,171 | 111,343 |
Sales | 0 | 0 |
Profit (loss) for the period | (3,032) | (3,546) |
PT. Siborpa Eco Power |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 12,209 | 12,050 |
Total liabilities | 3 | 3 |
Sales | 0 | 0 |
Profit (loss) for the period | (52) | (39) |
PT. Korea Energy Indonesia |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,878 | 1,675 |
Total liabilities | 101 | 80 |
Sales | 1,897 | 1,937 |
Profit (loss) for the period | 132 | (104) |
KOLAT SpA |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 46,958 | 48,787 |
Total liabilities | 352 | 3,701 |
Sales | 2,237 | 1,647 |
Profit (loss) for the period | 1,820 | 1,888 |
KEPCO California, LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 46,606 | 46,151 |
Total liabilities | 6,823 | 4,768 |
Sales | 613 | 596 |
Profit (loss) for the period | (385) | (670) |
KEPCO Mojave Holdings, LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 93,233 | 95,550 |
Total liabilities | 78,328 | 75,846 |
Sales | 0 | 0 |
Profit (loss) for the period | (3,901) | (4,705) |
Incheon Fuel Cell Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 259,169 | 268,063 |
Total liabilities | 237,409 | 242,176 |
Sales | 96,924 | 107,193 |
Profit (loss) for the period | (4,112) | (5,323) |
KOEN Service Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 11,470 | 9,353 |
Total liabilities | 8,745 | 7,035 |
Sales | 38,164 | 36,340 |
Profit (loss) for the period | 305 | 356 |
KOMIPO Service Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 7,944 | 6,597 |
Total liabilities | 4,777 | 4,503 |
Sales | 37,525 | 35,031 |
Profit (loss) for the period | 960 | 905 |
KOWEPO Service Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 10,300 | 6,266 |
Total liabilities | 6,584 | 3,130 |
Sales | 36,421 | 34,031 |
Profit (loss) for the period | 264 | 171 |
KOSPO Service Co., Ltd |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 6,122 | 6,672 |
Total liabilities | 4,182 | 5,048 |
Sales | 30,369 | 28,321 |
Profit (loss) for the period | 703 | 60 |
EWP Service Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 5,487 | 3,756 |
Total liabilities | 3,790 | 2,507 |
Sales | 26,767 | 24,526 |
Profit (loss) for the period | 176 | 581 |
PT. KOMIPO Energy Indonesia |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 2,983 | 2,978 |
Total liabilities | 250 | 368 |
Sales | 2,023 | 1,698 |
Profit (loss) for the period | 38 | 83 |
KNF Partners Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 2,589 | 2,285 |
Total liabilities | 1,106 | 1,053 |
Sales | 6,380 | 5,997 |
Profit (loss) for the period | 340 | 293 |
KOSPO USA Inc. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 378,732 | 315,018 |
Total liabilities | 377 | 430 |
Sales | 0 | 0 |
Profit (loss) for the period | (6,351) | 5,024 |
Nambu USA LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 297,370 | 297,516 |
Total liabilities | 230 | 0 |
Sales | 0 | 0 |
Profit (loss) for the period | (732) | 670 |
Tamra Offshore Wind Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 120,460 | 133,598 |
Total liabilities | 83,161 | 93,639 |
Sales | 18,570 | 18,332 |
Profit (loss) for the period | 1,089 | 5,316 |
KEPCO MCS Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 111,189 | 114,316 |
Total liabilities | 73,940 | 52,241 |
Sales | 307,146 | 363,627 |
Profit (loss) for the period | (4,757) | 8,468 |
KEPCO FMS Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 21,310 | 16,852 |
Total liabilities | 18,142 | 11,667 |
Sales | 107,336 | 105,339 |
Profit (loss) for the period | 1,895 | 2,176 |
Firstkeepers Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 18,698 | 16,448 |
Total liabilities | 12,437 | 12,912 |
Sales | 90,575 | 84,620 |
Profit (loss) for the period | 2,689 | 2,482 |
Secutec Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 16,038 | 12,578 |
Total liabilities | 11,797 | 9,209 |
Sales | 72,284 | 69,383 |
Profit (loss) for the period | 699 | 690 |
SE Green Energy Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 147,251 | 149,189 |
Total liabilities | 114,737 | 114,241 |
Sales | 40,326 | 49,873 |
Profit (loss) for the period | (1,305) | 1,304 |
Mangilao Intermediate Holdings LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 206,771 | 236,266 |
Total liabilities | 114,954 | 116,426 |
Sales | 0 | 0 |
Profit (loss) for the period | (5,293) | (4,709) |
KEPCO CSC Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 15,985 | 10,668 |
Total liabilities | 12,170 | 8,937 |
Sales | 49,502 | 46,559 |
Profit (loss) for the period | 2,644 | (2,134) |
KOAK Power Limited |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 15,000 | 12,626 |
Total liabilities | 528 | 839 |
Sales | 0 | 0 |
Profit (loss) for the period | 714 | 49 |
KOMIPO Europe B.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 86,109 | 81,364 |
Total liabilities | 69 | 54 |
Sales | 1,183 | 1,195 |
Profit (loss) for the period | 109 | 1,134 |
Haenanum Energy Fund |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 7,415 | 7,416 |
Total liabilities | 3 | 3 |
Sales | 47 | 0 |
Profit (loss) for the period | (1) | (48) |
Paju Ecoenergy Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 60,653 | 61,930 |
Total liabilities | 2,146 | 3,066 |
Sales | 15,351 | 20,718 |
Profit (loss) for the period | (357) | 1,290 |
Guam Ukudu Power LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 749,837 | 293,422 |
Total liabilities | 720,795 | 323,292 |
Sales | 0 | 0 |
Profit (loss) for the period | (19,904) | (31,410) |
K-SOLAR SHINAN Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 298,866 | 320,227 |
Total liabilities | 281,676 | 296,141 |
Sales | 37,137 | 16,980 |
Profit (loss) for the period | (6,896) | 3,690 |
KPS Partners Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 3,503 | 3,619 |
Total liabilities | 1,776 | 2,007 |
Sales | 12,921 | 12,417 |
Profit (loss) for the period | 183 | 487 |
KEPCO E&C Service Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 7,167 | 5,676 |
Total liabilities | 1,938 | 1,897 |
Sales | 16,454 | 16,180 |
Profit (loss) for the period | 1,505 | 1,493 |
Moha Solar Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 27,213 | 29,096 |
Total liabilities | 29,363 | 31,359 |
Sales | 0 | 169 |
Profit (loss) for the period | 112 | (1,137) |
Ogiri Solar Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,032 | 1,033 |
Total liabilities | 31 | 23 |
Sales | 0 | 0 |
Profit (loss) for the period | (9) | (30) |
KHNP USA LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,517 | 1,290 |
Total liabilities | 140 | 97 |
Sales | 1,142 | 1,127 |
Profit (loss) for the period | 166 | 392 |
KOMIPO Vanphong Power Service LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 26,819 | 15,940 |
Total liabilities | 3,768 | 3,333 |
Sales | 21,396 | 20,233 |
Profit (loss) for the period | 10,879 | 9,871 |
Energy Innovation Fund I |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 43,725 | 35,310 |
Total liabilities | 419 | 445 |
Sales | 0 | 0 |
Profit (loss) for the period | (766) | (961) |
KHNP Chile SpA |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 5,555 | 5,547 |
Total liabilities | 4,219 | 4,147 |
Sales | 0 | 0 |
Profit (loss) for the period | (66) | (16) |
Yeong Yang Apollon Photovoltaic Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,529 | 1,566 |
Total liabilities | 1,427 | 1,507 |
Sales | 219 | 254 |
Profit (loss) for the period | 42 | (82) |
Yeong Yang Corporation Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,519 | 1,559 |
Total liabilities | 1,418 | 1,497 |
Sales | 216 | 251 |
Profit (loss) for the period | 39 | (91) |
SolarVader Co., Ltd |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,529 | 1,568 |
Total liabilities | 1,421 | 1,500 |
Sales | 219 | 256 |
Profit (loss) for the period | 40 | (78) |
Yeong Yang Innovation Co., Ltd |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,510 | 1,557 |
Total liabilities | 1,418 | 1,497 |
Sales | 210 | 244 |
Profit (loss) for the period | 32 | (91) |
Yeong Yang Horus Photovoltaic Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,502 | 1,552 |
Total liabilities | 1,418 | 1,498 |
Sales | 206 | 243 |
Profit (loss) for the period | 28 | (93) |
Yeong Yang Solar Management Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,540 | 1,573 |
Total liabilities | 1,420 | 1,500 |
Sales | 224 | 262 |
Profit (loss) for the period | 46 | (75) |
LSG Hydro Power Limited |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 717 | 1,144 |
Total liabilities | 8 | 1,159 |
Sales | 0 | 0 |
Profit (loss) for the period | (219) | (18) |
KOEN Bio Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,010 | 261 |
Total liabilities | 585 | 219 |
Sales | 2,467 | 639 |
Profit (loss) for the period | 372 | (150) |
KOMIPO Iberian Solar Group, S.L.U. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 79,666 | 78,094 |
Total liabilities | 66,874 | 65,012 |
Sales | 0 | 0 |
Profit (loss) for the period | (931) | (1,304) |
Jeongam Wind Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 75,744 | 81,800 |
Total liabilities | 63,219 | 68,317 |
Sales | 8,154 | 10,722 |
Profit (loss) for the period | (958) | 892 |
KOWEPO Europe B.V. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 107 | 42,865 |
Total liabilities | 3,177 | 2,422 |
Sales | 0 | 0 |
Profit (loss) for the period | (44,685) | 1,668 |
Yeongdeok Sunrise Wind Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 94,615 | 42,187 |
Total liabilities | 74,842 | 22,031 |
Sales | 0 | 0 |
Profit (loss) for the period | (383) | (328) |
KHNP Spain, S.L. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets |  | 3 |
Total liabilities |  | 0 |
Sales |  | 0 |
Profit (loss) for the period |  | (1) |
KA Power Limited |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 3,173 | 3,937 |
Total liabilities | 172 | 418 |
Sales | 0 | 0 |
Profit (loss) for the period | 126 | 442 |
Western Power Changgi Solar Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 46,950 | 48,770 |
Total liabilities | 40,815 | 44,647 |
Sales | 7,036 | 3,447 |
Profit (loss) for the period | 2,011 | (354) |
EWP Australia Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 52,734 | 51,105 |
Total liabilities | 0 | 0 |
Sales | 325 | 0 |
Profit (loss) for the period | 337 | 15,203 |
Columboola Solar Farm Hold Co Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 311,259 | 310,271 |
Total liabilities | 213,822 | 214,792 |
Sales | 10,072 | 2,228 |
Profit (loss) for the period | 3,217 | 2,884 |
Digital Innovation Growth Fund |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 11,624 | 12,594 |
Total liabilities | 96 | 100 |
Sales | 0 | 0 |
Profit (loss) for the period | (266) | (363) |
J Wind First, LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 52,304 | 33,611 |
Total liabilities | 52,304 | 33,611 |
Sales | 2,540 | 450 |
Profit (loss) for the period | 0 | 0 |
KEPCO Holding Company |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 3,307 | 3,273 |
Total liabilities | 0 | 17 |
Sales | 0 | 0 |
Profit (loss) for the period | (23) | (18) |
KEPCO for Power Company |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets |  | 57,501 |
Total liabilities |  | 58,441 |
Sales |  | 0 |
Profit (loss) for the period |  | (960) |
KEPCO for Maintenance Company |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 118 | 0 |
Total liabilities | 0 | 0 |
Sales | 0 | 0 |
Profit (loss) for the period | (45) | 0 |
KOSPO Trumbull LLC |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 25 | 37 |
Total liabilities | 0 | 3 |
Sales | 0 | 0 |
Profit (loss) for the period | (10) | 0 |
Changjuk Wind Power Co., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 24,364 | 29,208 |
Total liabilities | 3,049 | 3,137 |
Sales | 6,230 | 9,027 |
Profit (loss) for the period | 744 | ₩ 3,503 |
Chile Solar JV SpA |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 98,705 |  |
Total liabilities | 75,472 |  |
Sales | 9,050 |  |
Profit (loss) for the period | (2,768) |  |
KEPCO KPS South Africa Pty., Ltd. |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 9,222 |  |
Total liabilities | 4,236 |  |
Sales | 8,512 |  |
Profit (loss) for the period | 834 |  |
KOWEPO Holding Limited |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |
Total assets | 1,323 |  |
Total liabilities | 1,371 |  |
Sales | 0 |  |
Profit (loss) for the period | ₩ (49) |  |

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