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Transactions between related parties (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Dongducheon Dream Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | ₩ 6,093 | ₩ 17,041 | ₩ 15,221
Electricity purchase | 828,547 | 813,440 | 946,463
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 332 | 2,230 |
Trade payables | 74,651 | 77,817 |
Non-trade receivables and others | 298 | 655 |
Non-trade payables and others | 10 | 0 |
Korea Gas Corporation |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 99,933 | 88,011 | 89,030
Purchase of power generation fuel | 5,191,243 | 3,245,519 | 3,633,198
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 9,439 | 9,833 |
Trade payables | 601,092 | 524,881 |
Non-trade receivables and others | 498 | 339 |
Non-trade payables and others | 314 | 569 |
Daegu Photovoltaic Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 128 | 349 | 0
REC purchase | 3,745 | 3,646 | 3,243
Outstanding balances for related party transactions [Abstract] |  |  |
Trade payables | 83 | 71 |
Jeongam Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 724 | 30 | 6
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 151 | 0 |
Non-trade payables and others | 2 | 4 |
Korea Power Engineering Service Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 840 | 1,317 | 1,455
Service purchase | 1,765 | 1,292 | 723
KS Solar Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 0 | 5 | 20
REC purchase | 0 | 900 | 4,080
Heang Bok Do Si Photovoltaic Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 2 | 2 | 2
Rental fee and others | 455 | 570 | 410
Korea Electric Power Industrial Development Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 10,422 | 14,044 | 10,723
Electricity metering service fee | 261,668 | 289,293 | 250,057
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 278 | 333 |
Non-trade receivables and others | 51 | 42 |
Non-trade payables and others | 13,102 | 18,006 |
Goseong Green Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 10,024 | 24,069 | 9,195
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 0 | 19 |
Non-trade payables and others | 43,020 | 7,140 |
Gangneung Eco Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 4,928 | 2,391 | 5,223
Service purchase | 19 | 0 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 1 | 1 |
Non-trade receivables and others | 99 | 4,747 |
Shin Pyeongtaek Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 8,468 | 9,025 | 3,579
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 123 | 0 |
Non-trade receivables and others | 242 | 210 |
Non-trade payables and others | 82 | 52 |
Naepo Green Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 160 | 185 | 104
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 17 | 17 |
Noeul Green Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 30 | 32 | 177
Service purchase | 18,282 | 15,862 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 3 | 3 |
Non-trade payables and others | 8,774 | 2,041 |
Samcheok Eco Materials Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 605 | 237 | 64
Electricity purchase | 3,819 | 14 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 61 | 20 |
YTN Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 2,043 | 1,987 | 1,785
Advertisement fee | 322 | 731 | 554
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 98 | 98 |
Non-trade payables and others | 11 | 209 |
Busan Green Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 19 | 120 | 133
Service purchase | 25,123 | 12,189 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 1 | 7 |
Non-trade receivables and others | 0 | 1,691 |
Non-trade payables and others | 10,882 | 0 |
Gunsan Bio Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 3,611 | 0 | 6
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 3,458 | 0 |
Korea Electric Vehicle Charge Service |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 578 | 700 | 89
Service purchase | 605 | 1,093 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 69 | 23 |
Trade payables | 0 | 45 |
Non-trade receivables and others | 354 | 0 |
Non-trade payables and others | 56 | 0 |
Ulleungdo Natural Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 292 | 1,013 | 691
Electricity purchase | 63 | 119 | 60
Tamra Offshore Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 58 | 55 | 12
Electricity purchase | 8,371 | 2,105 | 0
Daegu clean Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 126 | 421 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 17 | 0 |
Cheongna Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 11,688 | 7,980 | 6,831
Service purchase | 58 | 59 | 73
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 183 | 182 |
Non-trade payables and others | 0 | 1 |
Gangwon Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 2,402 | 994 | 1,273
Electricity purchase | 25,407 | 25,968 | 22,780
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 10 | 6 |
Trade payables | 2,547 | 3,033 |
Gwangyang Green Energy Co., Ltd |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 874 | 0 | 0
Hyundai Green Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Design service | 14,031 | 14,280 | 14,835
Electricity purchase | 480,815 | 458,378 | 469,547
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 390 | 946 |
Trade payables | 38,072 | 32,589 |
Korea Power Exchange |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 6,854 | 8,446 | 7,141
Trading Fees | 137,489 | 207,855 | 91,433
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 847 | 463 |
Non-trade receivables and others | 229 | 128 |
Non-trade payables and others | 1,214 | 1,142 |
Hyundai Energy |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 1,718 | 15,627 | 24,719
Electricity purchase | 3,445 | 87,607 | 1,313
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 57 | 49 |
Trade payables | 259 | 223 |
Non-trade receivables and others | 9,664 | 6,598 |
Non-trade payables and others | 8,021 | 13,796 |
Taebaek Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 614 | 813 | 796
REC purchase | 8,582 | 6,534 | 5,741
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 0 | 116 |
Trade payables | 453 | 533 |
Non-trade payables and others | 291 | 121 |
Pyeongchang Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Design service | 1,166 | 1,176 | 497
Service purchase | 6,994 | 4,033 | 1,594
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 4 | 3 |
Non-trade payables and others | 25 | 163 |
Daeryun Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 1,731 | 1,796 | 1,516
Electricity purchase | 184,063 | 146,189 | 244,023
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 178 | 162 |
Trade payables | 15,845 | 15,706 |
Changjuk Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 758 | 788 | 863
Electricity purchase | 7,929 | 6,981 | 5,786
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 0 | 101 |
Trade payables | 455 | 515 |
Non-trade payables and others | 273 | 546 |
KNH Solar Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 17 | 17 | 17
Electricity purchase | 3,586 | 3,947 | 4,006
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 1 | 1 |
Non-trade payables and others | 0 | 193 |
S-Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 9,118 | 12,852 | 5,994
Electricity purchase | 507,875 | 457,329 | 437,206
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 922 | 117 |
Trade payables | 56,897 | 25,061 |
Non-trade receivables and others | 34 | 5,183 |
Non-trade payables and others | 16 | 0 |
PND solar., Ltd |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 12 | 0 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 3 | 0 |
Busan Solar |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 0 | 0 | 8
Electricity purchase | 0 | 0 | 1,079
Hadong Mineral Fiber Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service purchase | 60 | 0 | 0
Green Biomass Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 0 | 0 | 2
Woodchip purchase | 440 | 1,345 | 2,232
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade payables and others | 0 | 85 |
SPC Power Corporation |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income | 9,549 | 5,562 | 8,346
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 73 | 76 |
YeongGwang Yaksu Wind Electric. Co., Ltd |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity purchase | 2,437 | 0 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade payables | 2,679 | 0 |
Gemeng International Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income | 11,246 | 13,365 | 16,476
PT. Cirebon Electric Power |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income | 4,432 | 550 | 0
Dolphin Property Limited |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income | 0 | 0 | 35
PT. Bayan Resources TBK |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 33,817 | 717 | 160
Nepal Water & Energy Development Company Private Limited |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 536 | 900 | 375
Service purchase | 31 | 72 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 311 | 227 |
Pioneer Gas Power Limited |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Rental income and others | 26 | 62 | 164
Xe-Pian Xe-Namnoy Power |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 672 | 661 | 773
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 61 | 53 |
PT. Mutiara Jawa |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Rental income and others | 40 | 47 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 10 | 0 |
Ecollite Co., Ltd. |  |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 210 | 210 |
Daegu Green Power |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 1,022 | 1,131 | 768
Electricity purchase | 287,008 | 252,024 | 263,797
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 110 | 98 |
Trade payables | 32,609 | 25,257 |
Non-trade receivables and others | 12 | 10 |
KEPCO SPC Power Corporation |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 43,141 | 45,005 | 10,344
Daejung Offshore Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 1 | 1 | 1
KAPES, Inc. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Commission | 648 | 1,420 | 1,176
Service purchase | 77,758 | 164,165 | 140,555
Outstanding balances for related party transactions [Abstract] |  |  |
Trade payables | 0 | 55 |
Non-trade receivables and others | 253 | 0 |
Non-trade payables and others | 338 | 0 |
Dangjin Eco Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Technical fee | 3,424 | 670 | 1,787
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 18 | 1,211 |
Non-trade payables and others | 0 | 41 |
Honam Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 415 | 552 | 169
Electricity purchase | 7,700 | 5,962 | 6,776
Outstanding balances for related party transactions [Abstract] |  |  |
Trade payables | 432 | 381 |
Non-trade payables and others | 3,573 | 3,013 |
Seokmun Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 1,897 | 1,765 | 1,627
REC purchase | 31,759 | 21,674 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 39 | 93 |
Non-trade receivables and others | 303 | 276 |
Non-trade payables and others | 5,043 | 3,052 |
Incheon New Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Construction revenue | 568 | 539 | 524
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 128 | 128 | 128
KW Nuclear Components Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 839 | 644 | 3,327
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 4 | 4 |
Non-trade receivables and others | 31 | 0 |
Chun-cheon Energy Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 2,471 | 4,855 | 3,079
REC purchase | 320,954 | 194,136 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 20 | 129 |
Trade payables | 33,796 | 29,676 |
Non-trade receivables and others | 308 | 252 |
Yeonggwangbaeksu Wind Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 1,540 | 1,654 | 1,591
Electricity purchase | 11,366 | 11,124 | 11,208
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 7 | 7 |
Trade payables | 736 | 619 |
Non-trade receivables and others | 0 | 144 |
Non-trade payables and others | 789 | 1,300 |
Yeonggwang Wind Power Co., Ltd |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 46 | 0 | 0
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 10 | 0 |
KEPCO-Uhde Inc. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 17 | 34 | 6
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade payables and others | 4 | 4 |
GS Donghae Electric Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 7,238 | 11,204 | 12,994
Electricity purchase | 780,233 | 351,367 | 903
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 245 | 450 |
Trade payables | 69,820 | 73,570 |
Non-trade receivables and others | 2,537 | 1,892 |
Non-trade payables and others | 59 | 0 |
Busan Shinho Solar Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales | 362 | 87 | 210
REC purchase | 7,901 | 7,984 | 6,770
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables | 2 | 2 |
Trade payables | 175 | 159 |
Non-trade payables and others | 717 | 811 |
Global Trade Of Power System Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service purchase | 565 | 414 | 882
Datang Chifeng Renewable Power |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Interest income | 19,013 | 500 | 8,216
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 0 | 82 |
Rabigh Electricity Company |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 29,167 | 19,179 | 699
Rabigh Operation & Maintenance Company |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 1,707 | 2,784 | 2,395
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others | 449 | 869 |
Datang Chaoyang Renewable Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income | 0 | 839 | 0
Shuweihat Asia Power Investment B.V. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income | 499 | 1,707 | 2,957
Shuweihat Asia Operation & Maintenance Company |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales | 1,046 | 1,319 | 1,179
Expressway Solar-light Power |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity purchase |  | 2,941 | 2,942
Purchase of power generation fuel | 3,513 |  |
ASM-BG Investicii AD |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 1,062 | 322
Design service | 1,153 |  |
Service purchase |  | 0 | 0
Rental fee and others | 1 |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others |  | 37 |
Non-trade payables and others | 38 |  |
Jamaica Public Service Company Limited |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 0 | 1,905
Design service | 5,160 |  |
Service purchase |  | 154 | 127
Rental fee and others | 83 |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables |  | 0 |
Trade payables | 594 |  |
Non-trade payables and others |  | 0 |
Accrued interest income | 24 |  |
KV Holdings, Inc. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income |  | 0 | 302
Rental income and others | 735 |  |
Datang KEPCO Chaoyang Renewable Power Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income |  | 0 | 440
Rental income and others | 0 |  |
Amman Asia Electric Power Company |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 14,205 | 21,915
Design service | 16,569 |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables |  | 2,675 |
Trade payables | 0 |  |
Non-trade payables and others |  | 0 |
Accrued interest income | 18,351 |  |
Kelar S.A |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 570 | 1,702
Design service | 0 |  |
Nghi Son 2 Power LLC |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 2,693 | 0
Design service | 25,880 |  |
Barakah One Company |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 7,059 | 25,244
Design service | 7,777 |  |
Service purchase |  | 2,631 | 0
Rental fee and others | 1,145 |  |
Nawah Energy Company |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 34,421 | 0
Design service | 51,144 |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables |  | 10,419 |
Trade payables | 29,614 |  |
Non-trade receivables and others |  | 0 |
Non-trade payables and others | 253 |  |
South Jamaica Power Company Limited |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 0 | 0
Design service | 152 |  |
Service purchase |  | 0 | 0
Rental fee and others | 67 |  |
RE Holiday Holdings LLC |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income |  | 0 | 0
Rental income and others | 112 |  |
RE Pioneer Holdings LLC |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income |  | 0 | 0
Rental income and others | 979 |  |
RE Barren Ridge 1 Holdings LLC |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income |  | 0 | 0
Rental income and others | 1,114 |  |
RE Astoria 2 LandCo LLC |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income |  | 0 | 0
Rental income and others | 504 |  |
RE Barren Ridge LandCo LLC |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Dividend income |  | 0 | 0
Rental income and others | 202 |  |
Yeongwol Energy Station Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 830 | 858
Design service | 373 |  |
REC purchase |  | 14,256 | 14,875
Service purchase | 4,019 |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables |  | 7,068 |
Trade payables | 0 |  |
DS POWER Co., Ltd. |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Service sales |  | 5,819 | 35,133
Design service | 565 |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Trade receivables |  | 340 |
Trade payables | 0 |  |
Korea Development Bank |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |
Electricity sales |  | 3,239 | 3,102
Service sales | 3,524 |  |
Dividend paid |  | 418,407 | 654,829
Commission | 166,876 |  |
Interest income |  | 1,685 | 3,164
Interest expense | 4,438 | 4,573 | ₩ 8,231
Electricity purchase | 5,043 |  |
Outstanding balances for related party transactions [Abstract] |  |  |
Non-trade receivables and others |  | 501,029 |
Non-trade payables and others | 12,125 | 200 |
Accrued interest income | 218 | 204 |
Derivative assets | 1,147 | 569 |
Derivative liabilities | ₩ 27,306 | ₩ 22,398 |

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