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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, 2022 | Dec. 31, 2021
Korea Hydro & Nuclear Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | ₩ 69,129,625 |  | ₩ 64,638,690 |
Total liabilities |  | 42,843,974 |  | 38,361,337 |
Sales |  | 10,386,091 |  | 9,324,391 |
Profit (loss) for the year |  | (16,382) |  | 302,232 |
Korea South-East Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 13,855,071 |  | 11,487,325 |
Total liabilities |  | 7,410,881 |  | 6,510,826 |
Sales |  | 8,972,991 |  | 5,188,856 |
Profit (loss) for the year |  | 71,662 |  | (58,096) |
Korea Midland Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 16,062,605 |  | 13,761,908 |
Total liabilities |  | 10,776,943 |  | 9,912,907 |
Sales |  | 8,629,165 |  | 5,353,915 |
Profit (loss) for the year |  | (58,173) |  | 60,737 |
Korea Western Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 13,459,054 |  | 10,822,780 |
Total liabilities |  | 8,125,312 |  | 7,116,671 |
Sales |  | 8,112,727 |  | 4,970,805 |
Profit (loss) for the year |  | 106,361 |  | (171,562) |
Korea Southern Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 14,011,354 |  | 11,350,984 |
Total liabilities |  | 8,296,983 |  | 7,099,881 |
Sales |  | 9,304,362 |  | 5,671,989 |
Profit (loss) for the year |  | (68,315) |  | (113,352) |
Korea East-West Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 12,079,954 |  | 9,895,739 |
Total liabilities |  | 5,818,789 |  | 5,163,005 |
Sales |  | 6,925,094 |  | 4,743,030 |
Profit (loss) for the year |  | 2,888 |  | 10,872 |
KEPCO Engineering & Construction Company, Inc. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 815,533 |  | 705,043 |
Total liabilities |  | 272,119 |  | 191,592 |
Sales |  | 505,291 |  | 433,127 |
Profit (loss) for the year |  | 17,954 |  | 16,452 |
KEPCO Plant Service & Engineering Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,555,453 |  | 1,420,705 |
Total liabilities |  | 344,702 |  | 311,607 |
Sales |  | 1,425,913 |  | 1,375,668 |
Profit (loss) for the year |  | 97,881 |  | 98,132 |
KEPCO Nuclear Fuel Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 949,455 |  | 837,249 |
Total liabilities |  | 490,215 |  | 405,614 |
Sales |  | 304,405 |  | 323,729 |
Profit (loss) for the year |  | 31,508 |  | 25,799 |
KEPCO KDN Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 734,439 |  | 721,634 |
Total liabilities |  | 166,272 |  | 189,242 |
Sales |  | 739,453 |  | 673,261 |
Profit (loss) for the year |  | 42,584 |  | 67,244 |
KEPCO International HongKong Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 128,784 |  | 128,968 |
Total liabilities |  | 0 |  | 0 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (216) |  | 341 |
KEPCO International Philippines Inc. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 127,744 |  | 154,317 |
Total liabilities |  | 101 |  | 482 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 9,976 |  | 8,766 |
KEPCO Gansu International Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 7,125 |  | 7,151 |
Total liabilities |  | 598 |  | 559 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (22) |  | (25) |
KEPCO Philippines Holdings Inc. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 191,634 |  | 191,757 |
Total liabilities |  | 129 |  | 128 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 39,346 |  | 60,192 |
KEPCO Philippines Corporation |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 3,799 |  | 6,122 |
Total liabilities |  | 14 |  | 19 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 102 |  | (68) |
KEPCO Ilijan Corporation |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 231,132 |  | 259,069 |
Total liabilities |  | 3,642 |  | 38,555 |
Sales |  | 23,263 |  | 60,532 |
Profit (loss) for the year |  | 16,455 |  | 12,981 |
KEPCO Lebanon SARL |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,890 |  | 1,729 |
Total liabilities |  | 10,482 |  | 9,794 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 20 |  | (86) |
KEPCO Neimenggu International Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 269,582 |  | 241,299 |
Total liabilities |  | 3,917 |  | 3,106 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 9,938 |  | 16,762 |
KEPCO Shanxi International Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 597,635 |  | 551,407 |
Total liabilities |  | 222,186 |  | 207,844 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (11,312) |  | 3,526 |
KOMIPO Global Pte Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 388,071 |  | 302,340 |
Total liabilities |  | 1,817 |  | 1,351 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 58,030 |  | 11,462 |
KEPCO Netherlands B.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 137,454 |  | 133,610 |
Total liabilities |  | 64 |  | 866 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 8,570 |  | 5,395 |
KEPCO Australia Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 579 |  | 481 |
Total liabilities |  | 11 |  | 11 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 102 |  | 25 |
KOSEP Australia Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 74,180 |  | 44,798 |
Total liabilities |  | 13,097 |  | 5,561 |
Sales |  | 52,271 |  | 22,013 |
Profit (loss) for the year |  | 24,443 |  | 8,268 |
KOMIPO Australia Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 81,216 |  | 54,162 |
Total liabilities |  | 10,327 |  | 5,648 |
Sales |  | 52,272 |  | 22,013 |
Profit (loss) for the year |  | 23,368 |  | 5,942 |
KOWEPO Australia Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 81,696 |  | 54,564 |
Total liabilities |  | 10,184 |  | 4,766 |
Sales |  | 52,271 |  | 22,013 |
Profit (loss) for the year |  | 22,745 |  | 7,387 |
KOSPO Australia Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 41,872 |  | 43,886 |
Total liabilities |  | 10,174 |  | 4,502 |
Sales |  | 52,271 |  | 22,013 |
Profit (loss) for the year |  | 24,362 |  | 5,940 |
KEPCO Middle East Holding Company |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 116,731 |  | 104,068 |
Total liabilities |  | 102,054 |  | 89,756 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (634) |  | 1,144 |
Qatrana Electric Power Company |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 513,277 |  | 480,809 |
Total liabilities |  | 247,027 |  | 262,725 |
Sales |  | 24,354 |  | 21,368 |
Profit (loss) for the year |  | 22,578 |  | 19,156 |
KHNP Canada Energy Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 107,200 |  | 109,326 |
Total liabilities |  | 6,218 |  | 25 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 149 |  | 29 |
KEPCO Bylong Australia Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 44,034 |  | 44,319 |
Total liabilities |  | 437,852 |  | 394,349 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (45,880) |  | (37,065) |
Korea Waterbury Uranium Limited Partnership |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 20,934 |  | 20,920 |
Total liabilities |  | 224 |  | 159 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (116) |  | (57) |
KEPCO Holdings de Mexico |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 728 |  | 148 |
Total liabilities |  | 1,974 |  | 27 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (1,363) |  | (8) |
KST Electric Power Company, S.A.P.I. de C.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 653,830 |  | 584,625 |
Total liabilities |  | 528,315 |  | 435,796 |
Sales |  | 232,893 |  | 151,467 |
Profit (loss) for the year |  | 23,122 |  | 18,499 |
KEPCO Energy Service Company |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 2,238 |  | 2,500 |
Total liabilities |  | 2,173 |  | 956 |
Sales |  | 7,015 |  | 12,070 |
Profit (loss) for the year |  | (211) |  | 574 |
KEPCO Netherlands S3 B.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 71,326 |  | 51,045 |
Total liabilities |  | 16,419 |  | 150 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 4,465 |  | 3,199 |
PT. KOMIPO Pembangkitan Jawa Bali |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 15,753 |  | 13,499 |
Total liabilities |  | 3,232 |  | 3,314 |
Sales |  | 22,488 |  | 18,296 |
Profit (loss) for the year |  | 3,668 |  | 885 |
PT. Cirebon Power Service |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 2,316 |  | 2,545 |
Total liabilities |  | 784 |  | 631 |
Sales |  | 9,602 |  | 8,664 |
Profit (loss) for the year |  | 355 |  | 505 |
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 year |  | 0 |  | 0 |
KOSPO Jordan LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 22,854 |  | 33,782 |
Total liabilities |  | 6,964 |  | 16,298 |
Sales |  | 45,009 |  | 9,698 |
Profit (loss) for the year |  | 7,657 |  | 816 |
EWP America Inc. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 47,775 | [1] | 46,687 | [2]
Total liabilities |  | 2,595 | [1] | 1,278 | [2]
Sales |  | 21,717 | [1] | 18,335 | [2]
Profit (loss) for the year |  | 4,337 | [1] | 6,807 | [2]
KNF Canada Energy Limited |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 2,116 |  | 2,101 |
Total liabilities |  | 34 |  | 17 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (59) |  | (43) |
EWP Barbados 1 SRL |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 395,067 |  | 354,024 |
Total liabilities |  | 901 |  | 1,172 |
Sales |  | 3,230 |  | 2,861 |
Profit (loss) for the year |  | 34,260 |  | 16,168 |
Gyeonggi Green Energy Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 220,414 |  | 243,977 |
Total liabilities |  | 226,517 |  | 224,132 |
Sales |  | 112,524 |  | 93,794 |
Profit (loss) for the year |  | (26,004) |  | (5,588) |
PT. Tanggamus Electric Power |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 227,638 |  | 212,161 |
Total liabilities |  | 163,106 |  | 167,409 |
Sales |  | 3,781 |  | 2,903 |
Profit (loss) for the year |  | 5,778 |  | 3,017 |
Gyeongju Wind Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 98,513 |  | 96,937 |
Total liabilities |  | 55,579 |  | 60,702 |
Sales |  | 24,888 |  | 15,289 |
Profit (loss) for the year |  | 9,711 |  | 3,132 |
KOMIPO America Inc. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets | [3] | 571,200 |  | 329,986 |
Total liabilities | [3] | 317,903 |  | 56,325 |
Sales | [3] | 34,059 |  | 1,715 |
Profit (loss) for the year | [3] | (3,293) |  | (1,311) |
PT. EWP Indonesia |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 93,390 |  | 47,031 |
Total liabilities |  | 5 |  | 1,226 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 4,100 |  | 4,615 |
KEPCO Netherlands J3 B.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 135,213 |  | 151,478 |
Total liabilities |  | 63 |  | 172 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 19,396 |  | 27,365 |
Korea Offshore Wind Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 376,449 |  | 359,393 |
Total liabilities |  | 192,335 |  | 188,507 |
Sales |  | 52,526 |  | 36,020 |
Profit (loss) for the year |  | 13,083 |  | 3,820 |
Global One Pioneer B.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 135 |  | 119 |
Total liabilities |  | 41 |  | 116 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (68) |  | (132) |
Global Energy Pioneer B.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 320 |  | 293 |
Total liabilities |  | 40 |  | 131 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (64) |  | (147) |
Mira Power Limited |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 416,750 |  | 424,183 |
Total liabilities |  | 310,529 |  | 311,459 |
Sales |  | 57,135 |  | 70,287 |
Profit (loss) for the year |  | 12,394 |  | 34,018 |
KOSEP Material Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 3,985 |  | 3,405 |
Total liabilities |  | 662 |  | 842 |
Sales |  | 4,589 |  | 4,518 |
Profit (loss) for the year |  | 775 |  | 442 |
Commerce and Industry Energy Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 79,172 |  | 85,315 |
Total liabilities |  | 32,147 |  | 35,543 |
Sales |  | 31,068 |  | 30,531 |
Profit (loss) for the year |  | (3,730) |  | 1,345 |
KEPCO KPS Philippines Corp. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 5,294 |  | 8,051 |
Total liabilities |  | 600 |  | 3,652 |
Sales |  | 5,232 |  | 9,768 |
Profit (loss) for the year |  | 1,004 |  | 1,493 |
KOSPO Chile SpA |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 159,500 |  | 142,956 |
Total liabilities |  | 70,037 |  | 56,688 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (2,811) |  | (851) |
PT. KOWEPO Sumsel Operation and Maintenance Services |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 25 |  | 116 |
Total liabilities |  | 252 |  | 259 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (94) |  | 0 |
Hee Mang Sunlight Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 5,877 |  | 6,242 |
Total liabilities |  | 2,606 |  | 3,272 |
Sales |  | 862 |  | 499 |
Profit (loss) for the year |  | 304 |  | 47 |
Fujeij Wind Power Company |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 213,113 |  | 200,783 |
Total liabilities |  | 163,690 |  | 169,340 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 16,564 |  | 14,739 |
KOSPO Youngnam Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 425,000 |  | 393,745 |
Total liabilities |  | 312,831 |  | 292,765 |
Sales |  | 568,224 |  | 318,770 |
Profit (loss) for the year |  | 10,878 |  | 6,339 |
Chitose Solar Power Plant LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 109,964 |  | 125,578 |
Total liabilities |  | 94,366 |  | 109,470 |
Sales |  | 14,384 |  | 16,630 |
Profit (loss) for the year |  | 1,615 |  | 1,794 |
KEPCO Energy Solution Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 317,392 |  | 317,676 |
Total liabilities |  | 6,147 |  | 4,938 |
Sales |  | 33,638 |  | 21,423 |
Profit (loss) for the year |  | 138 |  | 3,104 |
KEPCO Solar Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 243,221 |  | 231,567 |
Total liabilities |  | 25,405 |  | 22,229 |
Sales |  | 24,778 |  | 11,305 |
Profit (loss) for the year |  | 9,305 |  | 2,014 |
KOSPO Power Services Ltda. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 6,722 |  | 8,007 |
Total liabilities |  | 4,762 |  | 5,800 |
Sales |  | 17,911 |  | 21,133 |
Profit (loss) for the year |  | (358) |  | (356) |
Energy New Industry Specialized Investment Private Investment Trust |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 451,762 | [4] | 336,932 | [5]
Total liabilities |  | 4,338 | [4] | 28,536 | [5]
Sales |  | 24,725 | [4] | 19,405 | [5]
Profit (loss) for the year |  | 7,093 | [4] | 11,116 | [5]
KOEN Bylong Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 11 |  | 8 |
Total liabilities |  | 119 |  | 86 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (12) |  | 0 |
KOMIPO Bylong Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 11 |  | 8 |
Total liabilities |  | 122 |  | 86 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (33) |  | (8) |
KOWEPO Bylong Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 8 |  | 8 |
Total liabilities |  | 94 |  | 86 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (7) |  | (18) |
KOSPO Bylong Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 25 |  | 73 |
Total liabilities |  | 148 |  | 168 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (17) |  | (20) |
EWP Bylong Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 8 |  | 8 |
Total liabilities |  | 54 |  | 54 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 1 |  | 0 |
KOWEPO Lao International |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 8,248 |  | 12,974 |
Total liabilities |  | 87 |  | 70 |
Sales |  | 10,010 |  | 8,543 |
Profit (loss) for the year |  | 11,185 |  | 5,681 |
KEPCO US Inc. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 91 |  | 17,601 |
Total liabilities |  | 0 |  | 0 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (19,181) |  | 0 |
KEPCO Alamosa LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  |  |  | 34,100 |
Total liabilities |  |  |  | 297 |
Sales |  |  |  | 124 |
Profit (loss) for the year |  |  |  | (62) |
KEPCO Solar of Alamosa LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  |  |  | 57,104 |
Total liabilities |  |  |  | 41,953 |
Sales |  |  |  | 8,008 |
Profit (loss) for the year |  |  |  | (742) |
KEPCO Mangilao Holdings LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 112,948 |  | 28,504 |
Total liabilities |  | 40,558 |  | 32,501 |
Sales |  | 21,743 |  | 0 |
Profit (loss) for the year |  | 21,166 |  | (556) |
Mangilao Investment LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 258,674 |  | 43,459 |
Total liabilities |  | 4 |  | 29 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (1) |  | (14) |
KEPCO Mangilao Solar, LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 240,736 |  | 206,018 |
Total liabilities |  | 373 |  | 166,095 |
Sales |  | 8,870 |  | 0 |
Profit (loss) for the year |  | (14,818) |  | (865) |
Jeju Hanlim Offshore Wind Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 185,357 |  | 41,325 |
Total liabilities |  | 111,343 |  | 5,139 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (3,546) |  | (2,893) |
PT. Siborpa Eco Power |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 12,050 |  | 11,306 |
Total liabilities |  | 3 |  | 0 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (39) |  | (105) |
PT. Korea Energy Indonesia |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,675 |  | 1,917 |
Total liabilities |  | 80 |  | 215 |
Sales |  | 1,937 |  | 1,681 |
Profit (loss) for the year |  | (104) |  | 37 |
KOLAT SpA |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 48,787 |  | 28,349 |
Total liabilities |  | 3,701 |  | 849 |
Sales |  | 1,647 |  | 180 |
Profit (loss) for the year |  | 1,888 |  | (464) |
KEPCO California, LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 46,151 |  | 43,732 |
Total liabilities |  | 4,768 |  | 4,113 |
Sales |  | 596 |  | 1,310 |
Profit (loss) for the year |  | (670) |  | 160 |
KEPCO Mojave Holdings, LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 95,550 |  | 95,294 |
Total liabilities |  | 75,846 |  | 71,358 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (4,705) |  | (4,254) |
Incheon Fuel Cell Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 268,063 |  | 268,100 |
Total liabilities |  | 242,176 |  | 236,901 |
Sales |  | 107,193 |  | 54,188 |
Profit (loss) for the year |  | (5,323) |  | 8,738 |
KOEN Service Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 9,353 |  | 8,963 |
Total liabilities |  | 7,035 |  | 6,557 |
Sales |  | 36,340 |  | 35,190 |
Profit (loss) for the year |  | 356 |  | 2,326 |
KOMIPO Service Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 6,597 |  | 4,384 |
Total liabilities |  | 4,503 |  | 4,475 |
Sales |  | 35,031 |  | 32,323 |
Profit (loss) for the year |  | 905 |  | (96) |
KOWEPO Service Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 6,266 |  | 7,289 |
Total liabilities |  | 3,130 |  | 5,869 |
Sales |  | 34,031 |  | 31,700 |
Profit (loss) for the year |  | 171 |  | 303 |
KOSPO Service Co., Ltd |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 6,672 |  | 5,762 |
Total liabilities |  | 5,048 |  | 4,990 |
Sales |  | 28,321 |  | 26,257 |
Profit (loss) for the year |  | 60 |  | 31 |
EWP Service Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 3,756 |  | 5,483 |
Total liabilities |  | 2,507 |  | 5,455 |
Sales |  | 24,526 |  | 24,957 |
Profit (loss) for the year |  | 581 |  | 14 |
PT. KOMIPO Energy Indonesia |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 2,978 |  | 2,996 |
Total liabilities |  | 368 |  | 395 |
Sales |  | 1,698 |  | 2,077 |
Profit (loss) for the year |  | 83 |  | 106 |
KNF Partners Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 2,285 |  | 1,800 |
Total liabilities |  | 1,053 |  | 969 |
Sales |  | 5,997 |  | 5,664 |
Profit (loss) for the year |  | 293 |  | 152 |
KOSPO USA Inc. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 315,018 |  | 286,081 |
Total liabilities |  | 430 |  | 293 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 5,024 |  | 968 |
Nambu USA LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 297,516 |  | 277,698 |
Total liabilities |  | 0 |  | 0 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 670 |  | 568 |
Tamra Offshore Wind Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 133,598 |  | 146,736 |
Total liabilities |  | 93,639 |  | 106,961 |
Sales |  | 18,332 |  | 21,731 |
Profit (loss) for the year |  | 5,316 |  | 5,168 |
KEPCO MCS Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 114,316 |  | 80,277 |
Total liabilities |  | 52,241 |  | 39,139 |
Sales |  | 363,627 |  | 349,116 |
Profit (loss) for the year |  | 8,468 |  | 19,043 |
KEPCO FMS Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 16,852 |  | 17,188 |
Total liabilities |  | 11,667 |  | 15,577 |
Sales |  | 105,339 |  | 94,210 |
Profit (loss) for the year |  | 2,176 |  | 214 |
Firstkeepers Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 16,448 |  | 17,152 |
Total liabilities |  | 12,912 |  | 16,041 |
Sales |  | 84,620 |  | 77,189 |
Profit (loss) for the year |  | 2,482 |  | 19 |
Secutec Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 12,578 |  | 13,176 |
Total liabilities |  | 9,209 |  | 10,662 |
Sales |  | 69,383 |  | 65,963 |
Profit (loss) for the year |  | 690 |  | 1,774 |
SE Green Energy Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 149,189 |  | 153,105 |
Total liabilities |  | 114,241 |  | 119,461 |
Sales |  | 49,873 |  | 38,867 |
Profit (loss) for the year |  | 1,304 |  | 4,025 |
KEPCO Mangilao America LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  |  |  | 2,173 |
Total liabilities |  |  |  | 1 |
Sales |  |  |  | 0 |
Profit (loss) for the year |  |  |  | 0 |
Mangilao Intermediate Holdings LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 236,266 |  | 220,690 |
Total liabilities |  | 116,426 |  | 205,421 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (4,709) |  | (6,975) |
KEPCO CSC Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 10,668 |  | 8,093 |
Total liabilities |  | 8,937 |  | 6,799 |
Sales |  | 46,559 |  | 41,854 |
Profit (loss) for the year |  | (2,134) |  | (2,101) |
KOAK Power Limited |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 12,626 |  | 14,363 |
Total liabilities |  | 839 |  | 393 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 49 |  | (551) |
KOMIPO Europe B.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 81,364 |  | 70,431 |
Total liabilities |  | 54 |  | 97 |
Sales |  | 1,195 |  | 402 |
Profit (loss) for the year |  | 1,134 |  | (503) |
Haenanum Energy Fund |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 7,416 |  | 7,463 |
Total liabilities |  | 3 |  | 3 |
Sales |  | 0 |  | 40 |
Profit (loss) for the year |  | (48) |  | (74) |
Paju Ecoenergy Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 61,930 |  | 57,795 |
Total liabilities |  | 3,066 |  | 2,118 |
Sales |  | 20,718 |  | 15,425 |
Profit (loss) for the year |  | 1,290 |  | 2,234 |
Guam Ukudu Power LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 293,422 |  | 30,133 |
Total liabilities |  | 323,292 |  | 30,438 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (31,410) |  | (2,030) |
KPS Partners Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 3,619 |  | 2,809 |
Total liabilities |  | 2,007 |  | 1,529 |
Sales |  | 12,417 |  | 9,520 |
Profit (loss) for the year |  | 487 |  | 323 |
KEPCO E&C Service Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 5,676 |  | 4,054 |
Total liabilities |  | 1,897 |  | 1,889 |
Sales |  | 16,180 |  | 15,985 |
Profit (loss) for the year |  | 1,493 |  | 1,242 |
Moha Solar Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 29,096 |  | 32,808 |
Total liabilities |  | 31,359 |  | 33,933 |
Sales |  | 169 |  | 48 |
Profit (loss) for the year |  | (1,137) |  | (706) |
Ogiri Solar Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,033 |  | 1,041 |
Total liabilities |  | 23 |  | 1 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (30) |  | 9 |
KHNP USA LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,290 |  | 766 |
Total liabilities |  | 97 |  | 10 |
Sales |  | 1,127 |  | 1,001 |
Profit (loss) for the year |  | 392 |  | 267 |
KOMIPO Vanphong Power Service LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 15,940 |  | 3,758 |
Total liabilities |  | 3,333 |  | 860 |
Sales |  | 20,233 |  | 3,853 |
Profit (loss) for the year |  | 9,871 |  | 958 |
Energy Innovation Fund I |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 35,310 |  | 22,616 |
Total liabilities |  | 445 |  | 3,202 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (961) |  | (888) |
KHNP Chile SpA |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 5,547 |  | 5,294 |
Total liabilities |  | 4,147 |  | 3,879 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (16) |  | 17 |
Yeong Yang Apollon Photovoltaic Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,566 |  | 1,775 |
Total liabilities |  | 1,507 |  | 1,632 |
Sales |  | 254 |  | 5 |
Profit (loss) for the year |  | (82) |  | (30) |
Yeong Yang Corporation Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,559 |  | 1,776 |
Total liabilities |  | 1,497 |  | 1,623 |
Sales |  | 251 |  | 9 |
Profit (loss) for the year |  | (91) |  | (19) |
SolarVader Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,568 |  | 1,772 |
Total liabilities |  | 1,500 |  | 1,627 |
Sales |  | 256 |  | 0 |
Profit (loss) for the year |  | (78) |  | (26) |
Yeong Yang Innovation Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,557 |  | 1,773 |
Total liabilities |  | 1,497 |  | 1,622 |
Sales |  | 244 |  | 5 |
Profit (loss) for the year |  | (91) |  | (21) |
Yeong Yang Horus Photovoltaic Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,552 |  | 1,771 |
Total liabilities |  | 1,498 |  | 1,624 |
Sales |  | 243 |  | 9 |
Profit (loss) for the year |  | (93) |  | (24) |
Yeong Yang Solar Management Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,573 |  | 1,774 |
Total liabilities |  | 1,500 |  | 1,625 |
Sales |  | 262 |  | 0 |
Profit (loss) for the year |  | (75) |  | (23) |
LSG Hydro Power Limited |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 1,144 |  | 1 |
Total liabilities |  | 1,159 |  | 0 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (18) |  | 0 |
KOEN Bio Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 261 |  | 394 |
Total liabilities |  | 219 |  | 199 |
Sales |  | 639 |  | 51 |
Profit (loss) for the year |  | (150) |  | (305) |
KOMIPO Iberian Solar Group, S.L.U. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 78,094 |  | 70,993 |
Total liabilities |  | 65,012 |  | 56,707 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (1,304) |  | 1,354 |
Jeongam Wind Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 81,800 |  | 86,853 |
Total liabilities |  | 68,317 |  | 74,267 |
Sales |  | 10,722 |  | 10,476 |
Profit (loss) for the year |  | 892 |  | 1,027 |
KOWEPO Europe B.V. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 42,865 |  | 39,973 |
Total liabilities |  | 2,422 |  | 1,449 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | 1,668 |  | (744) |
Yeongdeok Sunrise Wind Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 42,187 |  | 21,252 |
Total liabilities |  | 22,031 |  | 768 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (328) |  | (116) |
KHNP Spain, S.L. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 3 |  | 5 |
Total liabilities |  | 0 |  | 0 |
Sales |  | 0 |  | 0 |
Profit (loss) for the year |  | (1) |  | 0 |
K-SOLAR SHINAN Co., Ltd. (formerly, TS Energy No. 25 Co., Ltd.) |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 320,227 |  | 353,324 |
Total liabilities |  | 296,141 |  | 318,977 |
Sales |  | 16,980 |  | 421 |
Profit (loss) for the year |  | 3,690 |  | ₩ (7,525) |
Western Power Changgi Solar Co., Ltd. (formerly, Sam-Yang Photovoltaic Power Co., Ltd.) |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 48,770 |  |  |
Total liabilities |  | 44,647 |  |  |
Sales |  | 3,447 |  |  |
Profit (loss) for the year |  | (354) |  |  |
EWP Australia Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 51,105 |  |  |
Total liabilities |  | 0 |  |  |
Sales |  | 0 |  |  |
Profit (loss) for the year |  | 15,203 |  |  |
Columboola Solar Farm Hold Co Pty., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 310,271 |  |  |
Total liabilities |  | 214,792 |  |  |
Sales |  | 2,228 |  |  |
Profit (loss) for the year |  | 2,884 |  |  |
Digital Innovation Growth Fund |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 12,594 |  |  |
Total liabilities |  | 100 |  |  |
Sales |  | 0 |  |  |
Profit (loss) for the year |  | (363) |  |  |
J Wind First, LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 33,611 |  |  |
Total liabilities |  | 33,611 |  |  |
Sales |  | 450 |  |  |
Profit (loss) for the year |  | 0 |  |  |
KEPCO Holding Company |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 3,273 |  |  |
Total liabilities |  | 17 |  |  |
Sales |  | 0 |  |  |
Profit (loss) for the year |  | (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 year |  | (960) |  |  |
KEPCO for Maintenance Company |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 0 |  |  |
Total liabilities |  | 0 |  |  |
Sales |  | 0 |  |  |
Profit (loss) for the year |  | 0 |  |  |
KOSPO Trumbull LLC |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 37 |  |  |
Total liabilities |  | 3 |  |  |
Sales |  | 0 |  |  |
Profit (loss) for the year |  | 0 |  |  |
Changjuk Wind Power Co., Ltd. |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 29,208 |  |  |
Total liabilities |  | 3,137 |  |  |
Sales |  | 9,027 |  |  |
Profit (loss) for the year |  | 3,503 |  |  |
KA Power Limited |  |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |  |
Total assets |  | 3,937 |  |  |
Total liabilities |  | 418 |  |  |
Sales |  | 0 |  |  |
Profit (loss) for the year |  | ₩ 442 |  |  |
[1] | Financial information of EWP America Inc. includes that of two other subsidiaries, EWP Renewable Corporation, and California Power Holdings, LLC.
[2] | Financial information of EWP America Inc. includes that of three other subsidiaries, EWP Renewable Corporation, California Power Holdings, LLC and EWPRC Biomass Holdings, LLC.
[3] | Financial information of KOMIPO America Inc. includes that of 17 other subsidiaries including Elara Equity Holdings, LLC and CVS Equity Holdings, LLC.
[4] | Financial information of Energy New Industry Specialized Investment Private Investment Trust includes that of five other subsidiaries, BSK E-New Industry Fund VII, e-New Industry LB Fund 1, Songhyun e-New Industry Fund, BSK E-New Industry Fund X, and UI Carbon-Neutrality Fund.
[5] | Financial information of Energy New Industry Specialized Investment Private Investment Trust includes that of four other subsidiaries, BSK E-New Industry Fund VII, e-New Industry LB Fund 1, Songhyun e-New Industry Fund and BSK E-New Industry Fund X.

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