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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, 2021 | Dec. 31, 2020
Korea Hydro & Nuclear Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | ₩ 64,638,690 |  | ₩ 61,859,753 |
Total liabilities | 38,361,337 |  | 35,652,467 |
Sales | 9,324,391 |  | 9,938,941 |
Profit (loss) for the year | 302,232 |  | 647,641 |
Korea South-East Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 11,487,325 |  | 10,858,645 |
Total liabilities | 6,510,826 |  | 5,954,129 |
Sales | 5,188,856 |  | 4,258,904 |
Profit (loss) for the year | (58,096) |  | (139,149) |
Korea Midland Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 13,756,040 |  | 13,028,436 |
Total liabilities | 9,912,907 |  | 9,357,603 |
Sales | 5,263,302 |  | 4,293,364 |
Profit (loss) for the year | 54,869 |  | (29,880) |
Korea Western Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 10,822,780 |  | 10,357,023 |
Total liabilities | 7,116,671 |  | 6,594,779 |
Sales | 4,970,805 |  | 3,605,986 |
Profit (loss) for the year | (171,562) |  | (108,953) |
Korea Southern Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 11,350,984 |  | 10,658,015 |
Total liabilities | 7,099,881 |  | 6,411,524 |
Sales | 5,671,989 |  | 4,015,941 |
Profit (loss) for the year | (113,352) |  | (17,588) |
Korea East-West Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 9,895,739 |  | 9,619,485 |
Total liabilities | 5,163,005 |  | 4,974,645 |
Sales | 4,743,030 |  | 4,155,416 |
Profit (loss) for the year | 10,872 |  | (65,427) |
KEPCO Engineering & Construction Company, Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 705,043 |  | 699,244 |
Total liabilities | 191,592 |  | 200,169 |
Sales | 433,127 |  | 431,723 |
Profit (loss) for the year | 16,452 |  | 20,160 |
KEPCO Plant Service & Engineering Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,420,705 |  | 1,345,857 |
Total liabilities | 311,607 |  | 296,515 |
Sales | 1,375,668 |  | 1,299,186 |
Profit (loss) for the year | 98,132 |  | 85,916 |
KEPCO Nuclear Fuel Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 837,249 |  | 798,368 |
Total liabilities | 405,614 |  | 390,155 |
Sales | 323,729 |  | 331,228 |
Profit (loss) for the year | 25,799 |  | 14,542 |
KEPCO KDN Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 721,634 |  | 647,496 |
Total liabilities | 189,242 |  | 174,192 |
Sales | 673,261 |  | 641,308 |
Profit (loss) for the year | 67,244 |  | 45,207 |
KEPCO International HongKong Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 128,968 |  | 120,213 |
Total liabilities | 0 |  | 0 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 341 |  | 1,571 |
KEPCO International Philippines Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 154,317 |  | 133,215 |
Total liabilities | 482 |  | 366 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 8,766 |  | 35,182 |
KEPCO Gansu International Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 7,151 |  | 7,753 |
Total liabilities | 559 |  | 512 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (25) |  | (19) |
KEPCO Philippines Holdings Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 191,757 |  | 187,375 |
Total liabilities | 128 |  | 127 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 60,192 |  | 65,792 |
KEPCO Philippines Corporation |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 6,122 |  | 6,173 |
Total liabilities | 19 |  | 17 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (68) |  | (187) |
KEPCO Ilijan Corporation |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 259,069 |  | 322,066 |
Total liabilities | 38,555 |  | 47,234 |
Sales | 60,532 |  | 81,400 |
Profit (loss) for the year | 12,981 |  | 39,443 |
KEPCO Lebanon SARL |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,729 |  | 1,669 |
Total liabilities | 9,794 |  | 9,195 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (86) |  | (59) |
KEPCO Neimenggu International Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 241,299 |  | 213,444 |
Total liabilities | 3,106 |  | 2,492 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 16,762 |  | 26,593 |
KEPCO Shanxi International Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 551,407 |  | 508,363 |
Total liabilities | 207,844 |  | 196,408 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 3,526 |  | 2,278 |
KOMIPO Global Pte Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 302,340 |  | 263,378 |
Total liabilities | 1,351 |  | 656 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 11,462 |  | 12,460 |
KEPCO Netherlands B.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 133,610 |  | 117,449 |
Total liabilities | 866 |  | 71 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 5,395 |  | 14,503 |
KOREA Imouraren Uranium Investment Corp. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 83 |  | 13,955 |
Total liabilities | 0 |  | 123 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (13,898) |  | (675) |
KEPCO Australia Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 481 |  | 451 |
Total liabilities | 11 |  | 17 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 25 |  | 71 |
KOSEP Australia Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 44,798 |  | 34,249 |
Total liabilities | 5,561 |  | 3,500 |
Sales | 22,013 |  | 14,327 |
Profit (loss) for the year | 8,268 |  | 2,150 |
KOMIPO Australia Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 54,162 |  | 45,250 |
Total liabilities | 5,648 |  | 3,782 |
Sales | 22,013 |  | 14,327 |
Profit (loss) for the year | 5,942 |  | 2,685 |
KOWEPO Australia Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 54,564 |  | 44,270 |
Total liabilities | 4,766 |  | 2,909 |
Sales | 22,013 |  | 14,327 |
Profit (loss) for the year | 7,387 |  | 1,663 |
KOSPO Australia Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 43,886 |  | 38,341 |
Total liabilities | 4,502 |  | 2,750 |
Sales | 22,013 |  | 14,327 |
Profit (loss) for the year | 5,940 |  | 2,242 |
KEPCO Middle East Holding Company |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 104,068 |  | 90,601 |
Total liabilities | 89,756 |  | 78,553 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 1,144 |  | (1,539) |
Qatrana Electric Power Company |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 480,809 |  | 464,507 |
Total liabilities | 262,725 |  | 287,859 |
Sales | 21,368 |  | 21,279 |
Profit (loss) for the year | 19,156 |  | 24,717 |
KHNP Canada Energy, Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 109,326 |  | 63,794 |
Total liabilities | 25 |  | 26 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 29 |  | (7) |
KEPCO Bylong Australia Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 44,319 |  | 44,691 |
Total liabilities | 394,349 |  | 349,542 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (37,065) |  | 16,897 |
Korea Waterbury Uranium Limited Partnership |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 20,920 |  | 20,908 |
Total liabilities | 159 |  | 165 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (57) |  | (76) |
KEPCO Holdings de Mexico |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 148 |  | 148 |
Total liabilities | 27 |  | 27 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (8) |  | (14) |
KST Electric Power Company, S.A.P.I. de C.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 584,625 |  | 531,367 |
Total liabilities | 435,796 |  | 410,743 |
Sales | 151,467 |  | 65,695 |
Profit (loss) for the year | 18,499 |  | 37,899 |
KEPCO Energy Service Company |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 2,500 |  | 2,255 |
Total liabilities | 956 |  | 994 |
Sales | 12,070 |  | 5,880 |
Profit (loss) for the year | 574 |  | 507 |
KEPCO Netherlands S3 B.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 51,045 |  | 44,042 |
Total liabilities | 150 |  | 54 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 3,199 |  | 2,833 |
PT. KOMIPO Pembangkitan Jawa Bali |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 13,499 |  | 12,946 |
Total liabilities | 3,314 |  | 3,298 |
Sales | 18,296 |  | 20,306 |
Profit (loss) for the year | 885 |  | 4,775 |
PT. Cirebon Power Service |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 2,545 |  | 1,825 |
Total liabilities | 631 |  | 550 |
Sales | 8,664 |  | 8,642 |
Profit (loss) for the year | 505 |  | 344 |
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 | 33,782 |  | 31,620 |
Total liabilities | 16,298 |  | 15,654 |
Sales | 9,698 |  | 9,356 |
Profit (loss) for the year | 816 |  | 1,570 |
EWP America Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 46,687 | [1] | 37,681 | [2]
Total liabilities | 1,278 | [1] | 2,683 | [2]
Sales | 18,335 | [1] | 14,312 | [2]
Profit (loss) for the year | 6,807 | [1] | (14,327) | [2]
KNF Canada Energy Limited |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 2,101 |  | 1,871 |
Total liabilities | 17 |  | 22 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (43) |  | (50) |
EWP Barbados 1 SRL |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 354,024 |  | 313,409 |
Total liabilities | 1,172 |  | 1,170 |
Sales | 2,861 |  | 2,950 |
Profit (loss) for the year | 16,168 |  | 44,729 |
Gyeonggi Green Energy Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 243,977 |  | 265,768 |
Total liabilities | 224,132 |  | 240,366 |
Sales | 93,794 |  | 64,660 |
Profit (loss) for the year | (5,588) |  | (9,968) |
PT. Tanggamus Electric Power |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 212,161 |  | 217,730 |
Total liabilities | 167,409 |  | 184,057 |
Sales | 2,903 |  | 3,491 |
Profit (loss) for the year | 3,017 |  | 11,942 |
Gyeongju Wind Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 96,937 |  | 105,726 |
Total liabilities | 60,702 |  | 68,629 |
Sales | 15,289 |  | 13,939 |
Profit (loss) for the year | 3,132 |  | 2,108 |
KOMIPO America Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 329,986 | [3] | 105,926 |
Total liabilities | 56,325 | [3] | 918 |
Sales | 1,715 | [3] | 342 |
Profit (loss) for the year | (1,311) | [3] | (1,783) |
KOSEP USA, Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets |  |  | 1 |
Total liabilities |  |  | 4,837 |
Sales |  |  | 0 |
Profit (loss) for the year |  |  | 0 |
PT. EWP Indonesia |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 47,031 |  | 33,900 |
Total liabilities | 1,226 |  | 1,125 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 4,615 |  | 7,083 |
KEPCO Netherlands J3 B.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 151,478 |  | 138,824 |
Total liabilities | 172 |  | 84 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 27,365 |  | 28,242 |
Korea Offshore Wind Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 359,393 |  | 354,643 |
Total liabilities | 188,507 |  | 187,576 |
Sales | 36,020 |  | 26,838 |
Profit (loss) for the year | 3,820 |  | 98 |
Global One Pioneer B.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 119 |  | 177 |
Total liabilities | 116 |  | 60 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (132) |  | (76) |
Global Energy Pioneer B.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 293 |  | 338 |
Total liabilities | 131 |  | 64 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (147) |  | (70) |
Mira Power Limited |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 424,183 |  | 348,737 |
Total liabilities | 311,459 |  | 266,565 |
Sales | 70,287 |  | 31,172 |
Profit (loss) for the year | 34,018 |  | (2,960) |
KOSEP Material Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 3,405 |  | 2,312 |
Total liabilities | 842 |  | 429 |
Sales | 4,518 |  | 3,457 |
Profit (loss) for the year | 442 |  | 189 |
Commerce and Industry Energy Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 85,315 |  | 89,681 |
Total liabilities | 35,543 |  | 41,384 |
Sales | 30,531 |  | 31,603 |
Profit (loss) for the year | 1,345 |  | 1,623 |
KEPCO KPS Philippines Corp. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8,051 |  | 3,119 |
Total liabilities | 3,652 |  | 284 |
Sales | 9,768 |  | 5,151 |
Profit (loss) for the year | 1,493 |  | 158 |
KOSPO Chile SpA |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 142,956 |  | 128,795 |
Total liabilities | 56,688 |  | 48,813 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (851) |  | (542) |
PT. KOWEPO Sumsel Operation and Maintenance Services |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 116 |  | 108 |
Total liabilities | 259 |  | 241 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 0 |  | (15) |
HeeMang Sunlight Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 6,242 |  | 7,261 |
Total liabilities | 3,272 |  | 4,339 |
Sales | 499 |  | 423 |
Profit (loss) for the year | 47 |  | (142) |
Fujeij Wind Power Company |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 200,783 |  | 194,844 |
Total liabilities | 169,340 |  | 174,051 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 14,739 |  | 13,720 |
KOSPO Youngnam Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 393,745 |  | 389,071 |
Total liabilities | 292,765 |  | 294,408 |
Sales | 318,770 |  | 254,966 |
Profit (loss) for the year | 6,339 |  | 3,405 |
VI Carbon Professional Private Special Asset Investment Trust 1 |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets |  |  | 3,006 |
Total liabilities |  |  | 4 |
Sales |  |  | 0 |
Profit (loss) for the year |  |  | 7 |
Chitose Solar Power Plant LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 125,578 |  | 133,643 |
Total liabilities | 109,470 |  | 118,783 |
Sales | 16,630 |  | 17,073 |
Profit (loss) for the year | 1,794 |  | 1,521 |
KEPCO Energy Solution Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 317,676 |  | 313,754 |
Total liabilities | 4,938 |  | 4,093 |
Sales | 21,423 |  | 5,585 |
Profit (loss) for the year | 3,104 |  | 3,656 |
KEPCO Solar Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 231,567 |  | 230,443 |
Total liabilities | 22,229 |  | 23,098 |
Sales | 11,305 |  | 3,933 |
Profit (loss) for the year | 2,014 |  | 1,888 |
KOSPO Power Services Ltda. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8,007 |  | 4,354 |
Total liabilities | 5,800 |  | 1,644 |
Sales | 21,133 |  | 10,846 |
Profit (loss) for the year | (356) |  | 1,011 |
Energy New Industry Specialized Investment Private Investment Trust |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 336,932 | [4] | 279,489 | [5]
Total liabilities | 28,536 | [4] | 24,173 | [5]
Sales | 19,405 | [4] | 23,682 | [5]
Profit (loss) for the year | 11,116 | [4] | 8,248 | [5]
KOEN Bylong Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8 |  | 6 |
Total liabilities | 86 |  | 75 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 0 |  | (11) |
KOMIPO Bylong Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8 |  | 7 |
Total liabilities | 86 |  | 76 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (8) |  | (11) |
KOWEPO Bylong Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8 |  | 6 |
Total liabilities | 86 |  | 64 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (18) |  | 0 |
KOSPO Bylong Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 73 |  | 153 |
Total liabilities | 168 |  | 213 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (20) |  | (2) |
EWP Bylong Pty., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8 |  | 6 |
Total liabilities | 54 |  | 35 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 0 |  | 28 |
KOWEPO Lao International |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 12,974 |  | 8,982 |
Total liabilities | 70 |  | 392 |
Sales | 8,543 |  | 8,466 |
Profit (loss) for the year | 5,681 |  | 4,706 |
KEPCO US Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 17,601 |  | 16,154 |
Total liabilities | 0 |  | 0 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 0 |  | (21) |
KEPCO Alamosa LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 34,100 |  | 31,353 |
Total liabilities | 297 |  | 270 |
Sales | 124 |  | 127 |
Profit (loss) for the year | (62) |  | (237) |
KEPCO Solar of Alamosa, LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 57,104 |  | 68,336 |
Total liabilities | 41,953 |  | 42,910 |
Sales | 8,008 |  | 9,096 |
Profit (loss) for the year | (742) |  | (2,052) |
KEPCO Mangilao Holdings LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 28,504 |  | 25,785 |
Total liabilities | 32,501 |  | 28,924 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (556) |  | (502) |
Mangilao Investment LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 43,459 |  | 38,090 |
Total liabilities | 29 |  | 14 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (14) |  | (15) |
KEPCO Mangilao Solar, LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 206,018 |  | 69,830 |
Total liabilities | 166,095 |  | 34,029 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (865) |  | (253) |
Jeju Hanlim Offshore Wind Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 41,325 |  | 20,525 |
Total liabilities | 5,139 |  | 9,805 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (2,893) |  | (3,049) |
PT. Siborpa Eco Power |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 11,306 |  | 10,491 |
Total liabilities | 0 |  | 14 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (105) |  | (361) |
PT. Korea Energy Indonesia |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,917 |  | 1,746 |
Total liabilities | 215 |  | 196 |
Sales | 1,681 |  | 2,428 |
Profit (loss) for the year | 37 |  | 190 |
KOLAT SpA |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 28,349 |  | 31,109 |
Total liabilities | 849 |  | 425 |
Sales | 180 |  | 243 |
Profit (loss) for the year | (464) |  | (216) |
KEPCO California, LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 43,732 |  | 41,973 |
Total liabilities | 4,113 |  | 4,683 |
Sales | 1,310 |  | 0 |
Profit (loss) for the year | 160 |  | (1,330) |
KEPCO Mojave Holdings, LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 95,294 |  | 95,326 |
Total liabilities | 71,358 |  | 67,138 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (4,254) |  | (4,358) |
Incheon Fuel Cell Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 259,111 |  | 192,184 |
Total liabilities | 236,901 |  | 170,976 |
Sales | 46,034 |  | 0 |
Profit (loss) for the year | 962 |  | (979) |
KOEN Service Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8,963 |  | 6,239 |
Total liabilities | 6,557 |  | 5,598 |
Sales | 35,190 |  | 32,150 |
Profit (loss) for the year | 2,326 |  | 129 |
KOMIPO Service Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 4,384 |  | 3,381 |
Total liabilities | 4,475 |  | 3,649 |
Sales | 32,323 |  | 28,596 |
Profit (loss) for the year | (96) |  | (479) |
KOWEPO Service Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 7,289 |  | 6,045 |
Total liabilities | 5,869 |  | 4,849 |
Sales | 31,700 |  | 29,559 |
Profit (loss) for the year | 303 |  | 726 |
KOSPO Service Co., Ltd |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 5,762 |  | 5,617 |
Total liabilities | 4,990 |  | 4,708 |
Sales | 26,257 |  | 25,103 |
Profit (loss) for the year | 31 |  | 832 |
EWP Service Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 5,483 |  | 4,568 |
Total liabilities | 5,455 |  | 4,074 |
Sales | 24,957 |  | 23,223 |
Profit (loss) for the year | 14 |  | (15) |
PT. KOMIPO Energy Indonesia |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 2,996 |  | 2,473 |
Total liabilities | 395 |  | 154 |
Sales | 2,077 |  | 2,391 |
Profit (loss) for the year | 106 |  | 52 |
KNF Partners Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,800 |  | 1,470 |
Total liabilities | 969 |  | 743 |
Sales | 5,664 |  | 5,487 |
Profit (loss) for the year | 152 |  | 256 |
KOSPO USA Inc. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 286,081 |  | 120,380 |
Total liabilities | 293 |  | 266 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 968 |  | (1,611) |
Nambu USA LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 277,698 |  | 42,739 |
Total liabilities | 0 |  | 0 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 568 |  | 544 |
Tamra Offshore Wind Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 146,736 |  | 150,957 |
Total liabilities | 106,961 |  | 112,184 |
Sales | 21,731 |  | 22,200 |
Profit (loss) for the year | 5,168 |  | 4,575 |
KEPCO MCS Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 80,277 |  | 59,227 |
Total liabilities | 39,139 |  | 36,786 |
Sales | 349,116 |  | 342,053 |
Profit (loss) for the year | 19,043 |  | 19,190 |
KEPCO FMS Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 17,188 |  | 14,390 |
Total liabilities | 15,577 |  | 12,585 |
Sales | 94,210 |  | 89,228 |
Profit (loss) for the year | 214 |  | 837 |
Firstkeepers Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 17,152 |  | 13,981 |
Total liabilities | 16,041 |  | 12,234 |
Sales | 77,189 |  | 68,538 |
Profit (loss) for the year | 19 |  | 2,994 |
Secutec Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 13,176 |  | 11,473 |
Total liabilities | 10,662 |  | 9,771 |
Sales | 65,963 |  | 62,256 |
Profit (loss) for the year | 1,774 |  | 1,609 |
SE Green Energy Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 153,105 |  | 152,205 |
Total liabilities | 119,461 |  | 122,606 |
Sales | 38,867 |  | 19,731 |
Profit (loss) for the year | 4,025 |  | 2,463 |
KEPCO Mangilao America LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 2,173 |  | 1,793 |
Total liabilities | 1 |  | 0 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 0 |  | 0 |
Mangilao Intermediate Holdings LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 220,690 |  | 100,609 |
Total liabilities | 205,421 |  | 80,210 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (6,975) |  | (3,708) |
KEPCO CSC Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 8,093 |  | 8,817 |
Total liabilities | 6,799 |  | 5,551 |
Sales | 41,854 |  | 38,465 |
Profit (loss) for the year | (2,101) |  | 2,479 |
KOAK Power Limited |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 14,363 |  | 15,864 |
Total liabilities | 393 |  | 1,118 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (551) |  | 607 |
KOMIPO Europe B.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 70,431 |  | 43,198 |
Total liabilities | 97 |  | 46 |
Sales | 402 |  | 333 |
Profit (loss) for the year | (503) |  | (386) |
Haenanum Energy Fund |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 7,463 |  | 28,219 |
Total liabilities | 3 |  | 132 |
Sales | 40 |  | 128 |
Profit (loss) for the year | (74) |  | (13) |
Paju Ecoenergy Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 57,795 |  | 57,320 |
Total liabilities | 2,118 |  | 3,506 |
Sales | 15,425 |  | 3,069 |
Profit (loss) for the year | 2,234 |  | 247 |
Guam Ukudu Power LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 30,133 |  | 3,165 |
Total liabilities | 30,438 |  | 3,589 |
Sales | 0 |  | 0 |
Profit (loss) for the year | (2,030) |  | (1,577) |
TS Energy No. 25 Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 353,324 |  | 184,667 |
Total liabilities | 318,977 |  | 142,709 |
Sales | 421 |  | 0 |
Profit (loss) for the year | (7,525) |  | (3,779) |
KPS Partners Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 2,809 |  | 2,139 |
Total liabilities | 1,529 |  | 1,127 |
Sales | 9,520 |  | 3,562 |
Profit (loss) for the year | 323 |  | 313 |
KEPCO E&C Service Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 4,054 |  | 2,514 |
Total liabilities | 1,889 |  | 1,549 |
Sales | 15,985 |  | 4,989 |
Profit (loss) for the year | 1,242 |  | 464 |
Moha Solar Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 32,808 |  | 7,390 |
Total liabilities | 33,933 |  | 7,809 |
Sales | 48 |  | 0 |
Profit (loss) for the year | (706) |  | (364) |
Ogiri Solar Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,041 |  | 1,032 |
Total liabilities | 1 |  | 0 |
Sales | 0 |  | 0 |
Profit (loss) for the year | 9 |  | 0 |
KHNP USA LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 766 |  | 464 |
Total liabilities | 10 |  | 23 |
Sales | 1,001 |  | 229 |
Profit (loss) for the year | 267 |  | 119 |
KOMIPO Vanphong Power Service LLC |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 3,758 |  | 1,727 |
Total liabilities | 860 |  | 12 |
Sales | 3,853 |  | 0 |
Profit (loss) for the year | 958 |  | (34) |
Energy Innovation Fund I |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 22,616 |  | 8,412 |
Total liabilities | 3,202 |  | 1 |
Sales | 0 |  | 25 |
Profit (loss) for the year | (888) |  | ₩ (201) |
KHNP Chile SpA |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 5,294 |  |  |
Total liabilities | 3,879 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | 17 |  |  |
Yeong Yang Apollon Photovoltaic Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,775 |  |  |
Total liabilities | 1,632 |  |  |
Sales | 5 |  |  |
Profit (loss) for the year | (30) |  |  |
Yeong Yang Corporation Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,776 |  |  |
Total liabilities | 1,623 |  |  |
Sales | 9 |  |  |
Profit (loss) for the year | (19) |  |  |
SolarVader Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,772 |  |  |
Total liabilities | 1,627 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | (26) |  |  |
Yeong Yang Innovation Co., Ltd. [Member] |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,773 |  |  |
Total liabilities | 1,622 |  |  |
Sales | 5 |  |  |
Profit (loss) for the year | (21) |  |  |
Yeong Yang Horus Photovoltaic Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,771 |  |  |
Total liabilities | 1,624 |  |  |
Sales | 9 |  |  |
Profit (loss) for the year | (24) |  |  |
Yeong Yang Solar Management Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1,774 |  |  |
Total liabilities | 1,625 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | (23) |  |  |
LSG Hydro Power Limited |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 1 |  |  |
Total liabilities | 0 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | 0 |  |  |
KOEN Bio Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 394 |  |  |
Total liabilities | 199 |  |  |
Sales | 51 |  |  |
Profit (loss) for the year | (305) |  |  |
KOMIPO Iberian Solar Group, S.L.U. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 70,993 |  |  |
Total liabilities | 56,707 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | 1,354 |  |  |
Jeongam Wind Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 86,853 |  |  |
Total liabilities | 74,267 |  |  |
Sales | 10,476 |  |  |
Profit (loss) for the year | 1,027 |  |  |
KOWEPO Europe B.V. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 39,973 |  |  |
Total liabilities | 1,449 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | (744) |  |  |
Yeongdeok Sunrise Wind Power Co., Ltd. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 21,252 |  |  |
Total liabilities | 768 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | (116) |  |  |
KHNP Spain, S.L. |  |  |  |
Disclosure - Summary of financial information of consolidated subsidiaries [Line Items] |  |  |  |
Total assets | 5 |  |  |
Total liabilities | 0 |  |  |
Sales | 0 |  |  |
Profit (loss) for the year | ₩ 0 |  |  |
[1] | Financial information of EWP America Inc. includes that of three other subsidiaries, EWP Renewable Corporation, California Power Holdings, LLC and EWPRC Biomass Holdings, LLC.
[2] | Financial information of EWP America Inc. includes that of four other subsidiaries, EWP Renewable Corporation, DG Fairhaven Power, LLC, 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 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.
[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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