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Investments in Joint Ventures (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of joint ventures [Line Items] |  |  |  |  |
Acquisition cost |  | ₩ 1,647,317 |  | ₩ 1,469,978 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 1,493,275 |  | 1,418,196 |
Acquisition |  | 237,142 |  | 121,244 |
Disposal |  | (1,632) |  | 0 |
Dividends received |  | (102,126) |  | (74,918) |
Share of income (loss) |  | 147,092 |  | 130,941 |
Other comprehensive income (loss) |  | 40,985 |  | (101,175) |
Others (book value) |  | (1,211) |  | (1,013) |
Ending balance |  | ₩ 1,813,525 |  | ₩ 1,493,275 |
KEPCO-Uhde Inc. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation | [1] | Power generation | [2]
Location |  | KOREA | [1] | KOREA | [2]
Percentage of ownership | [3] | 52.80% | [1] | 52.80% | [2]
Acquisition cost |  | ₩ 11,355 | [1] | ₩ 11,355 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 258 | [2] | 301 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (70) |  | (43) |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 188 | [1] | 258 | [2]
Share in net assets |  | 188 |  | 258 |
Total assets |  | 403 |  | 515 |
Total liabilities |  | 34 |  | 7 |
Net assets |  | 369 |  | 508 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 18 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ (139) |  | ₩ (86) |
Eco Biomass Energy Sdn. Bhd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation | [1] | Power generation | [2]
Location |  | MALAYSIA | [1] | MALAYSIA | [2]
Percentage of ownership | [3] | 61.53% | [1] | 61.53% | [2]
Acquisition cost |  | ₩ 14,439 | [1] | ₩ 14,439 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 0 | [2] | 0 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 0 |  | 0 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 0 | [1] | ₩ 0 | [2]
Share in net assets |  | 0 |  |  |
Total assets |  | 0 |  |  |
Total liabilities |  | 0 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 0 |  |  |
Datang Chaoyang Renewable Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | CHINA |  | CHINA |
Percentage of ownership | [3] |  |  | 40.00% |
Acquisition cost |  |  |  | ₩ 27,660 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | ₩ 27,262 |  | 28,239 |
Acquisition |  | 0 | [4] | 0 |
Disposal |  | 0 | [4] | 0 |
Dividends received |  | 0 | [4] | (839) |
Share of income (loss) |  | 743 | [4] | 840 |
Other comprehensive income (loss) |  | 1,009 | [4] | (978) |
Others (book value) |  | (29,014) | [4] | 0 |
Ending balance |  | ₩ 0 | [4] | 27,262 |
Share in net assets |  |  |  | 27,262 |
Total assets |  |  |  | 138,463 |
Total liabilities |  |  |  | 70,309 |
Net assets |  |  |  | 68,154 |
Sales of JointVentures |  |  |  | 17,776 |
Profit (loss) for the period of JointVentures |  |  |  | ₩ 2,149 |
Shuweihat Asia Power Investment B.V. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Holding company |  | Holding company |
Location |  | NETHERLANDS |  | NETHERLANDS |
Percentage of ownership | [3] | 49.00% |  | 49.00% |
Acquisition cost |  | ₩ 44,405 |  | ₩ 46,037 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 15,675 |  | 0 |
Acquisition |  | 0 |  | 0 |
Disposal |  | (1,632) |  | 0 |
Dividends received |  | (499) |  | (1,707) |
Share of income (loss) |  | 3,075 |  | 4,275 |
Other comprehensive income (loss) |  | 10,632 |  | 12,457 |
Others (book value) |  | 0 |  | 650 |
Ending balance |  | 27,251 |  | 15,675 |
Share in net assets |  | 27,251 |  | 15,675 |
Total assets |  | 55,614 |  | 32,001 |
Total liabilities |  | 0 |  | 10 |
Net assets |  | 1,441 |  | 31,991 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 0 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ (187) |  | ₩ (170) |
Shuweihat Asia Operation & Maintenance Company |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Maintenance of utility plant | [1] | Maintenance of utility plant | [2]
Location |  | CAYMAN | [1] | CAYMAN | [2]
Percentage of ownership | [3] | 55.00% | [1] | 55.00% | [2]
Acquisition cost |  | ₩ 30 | [1] | ₩ 30 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 663 | [2] | 450 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (859) |  | (770) |
Share of income (loss) |  | 946 |  | 1,055 |
Other comprehensive income (loss) |  | 42 |  | (172) |
Others (book value) |  | 0 |  | 100 |
Ending balance |  | 792 | [1] | 663 | [2]
Share in net assets |  | 793 |  | 663 |
Total assets |  | 1,472 |  | 1,220 |
Total liabilities |  | 31 |  | 14 |
Net assets |  |  |  | 1,206 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | (1) |  | 0 |
Sales of JointVentures |  | 2,391 |  | 2,580 |
Profit (loss) for the period of JointVentures |  | ₩ 1,719 |  | ₩ 1,918 |
Waterbury Lake Uranium L.P. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Resources development |  | Resources development |
Location |  | CANADA |  | CANADA |
Percentage of ownership | [3] | 34.07% |  | 35.76% |
Acquisition cost |  | ₩ 26,602 |  | ₩ 26,602 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 19,781 |  | 21,314 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (3) |  | (23) |
Other comprehensive income (loss) |  | (746) |  | (949) |
Others (book value) |  | 0 |  | (561) |
Ending balance |  | 19,032 |  | 19,781 |
Share in net assets |  | 19,032 |  | 19,780 |
Total assets |  | 55,933 |  | 55,563 |
Total liabilities |  | 64 |  | 250 |
Net assets |  | 55,869 |  | 55,313 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 1 |
Sales of JointVentures |  | 0 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ 0 |  | ₩ 0 |
ASM-BG Investicii AD |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | BULGARIA |  | BULGARIA |
Percentage of ownership | [3] | 50.00% |  | 50.00% |
Acquisition cost |  | ₩ 16,101 |  | ₩ 16,101 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 21,202 |  | 21,488 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (1,039) |  | (946) |
Share of income (loss) |  | 2,236 |  | (150) |
Other comprehensive income (loss) |  | (1,020) |  | 810 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 21,379 |  | 21,202 |
Share in net assets |  | 21,379 |  | 21,202 |
Total assets |  | 84,924 |  | 87,110 |
Total liabilities |  | 42,166 |  | 44,706 |
Net assets |  | 42,758 |  | 42,404 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 12,745 |  | 12,611 |
Profit (loss) for the period of JointVentures |  | ₩ 4,406 |  | ₩ (262) |
RES Technology AD |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | BULGARIA |  | BULGARIA |
Percentage of ownership | [3] | 50.00% |  | 50.00% |
Acquisition cost |  | ₩ 15,595 |  | ₩ 15,595 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 14,375 |  | 13,582 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 812 |  | 1,053 |
Other comprehensive income (loss) |  | 22 |  | (260) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 15,209 |  | 14,375 |
Share in net assets |  | 15,209 |  | 14,375 |
Total assets |  | 69,609 |  | 71,595 |
Total liabilities |  | 39,192 |  | 42,845 |
Net assets |  | 30,417 |  | 28,750 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 7,879 |  | 7,793 |
Profit (loss) for the period of JointVentures |  | ₩ 1,567 |  | ₩ 2,164 |
KV Holdings, Inc. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | PHILIPPINES |  | PHILIPPINES |
Percentage of ownership | [3] | 40.00% |  | 40.00% |
Acquisition cost |  | ₩ 2,103 |  | ₩ 2,103 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 1,918 |  | 2,098 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (735) |  | 0 |
Share of income (loss) |  | 772 |  | 61 |
Other comprehensive income (loss) |  | (37) |  | (241) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 1,918 |  | 1,918 |
Share in net assets |  | 1,918 |  | 1,918 |
Total assets |  | 4,795 |  | 4,795 |
Total liabilities |  | 0 |  | 0 |
Net assets |  | 4,795 |  | 4,795 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 8 |  | 671 |
Profit (loss) for the period of JointVentures |  | ₩ 1,257 |  | ₩ 677 |
KEPCO SPC Power Corporation |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Construction and operation of utility plant | [1] | Construction and operation of utility plant | [2]
Location |  | PHILIPPINES | [1] | PHILIPPINES | [2]
Percentage of ownership | [3] | 75.20% | [1] | 75.20% | [2]
Acquisition cost |  | ₩ 94,579 | [1] | ₩ 94,579 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 217,094 | [2] | 245,367 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (41,601) |  | (37,443) |
Share of income (loss) |  | 44,909 |  | 42,359 |
Other comprehensive income (loss) |  | (12,092) |  | (33,230) |
Others (book value) |  | (4) |  | 41 |
Ending balance |  | 208,306 | [1] | 217,094 | [2]
Share in net assets |  | 208,306 |  | 217,094 |
Total assets |  | 312,093 |  | 318,911 |
Total liabilities |  | 35,091 |  | 30,222 |
Net assets |  | 277,002 |  | 288,689 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 184,046 |  | 186,725 |
Profit (loss) for the period of JointVentures |  | ₩ 59,543 |  | ₩ 57,364 |
Gansu Datang Yumen Wind Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | CHINA |  | CHINA |
Percentage of ownership | [3] | 40.00% |  | 40.00% |
Acquisition cost |  | ₩ 16,621 |  | ₩ 16,621 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 10,840 |  | 12,821 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (818) |  | (1,299) |
Other comprehensive income (loss) |  | (41) |  | (682) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 9,981 |  | 10,840 |
Share in net assets |  | 9,981 |  | 10,840 |
Total assets |  | 79,354 |  | 81,960 |
Total liabilities |  | 54,402 |  | 54,859 |
Net assets |  | 24,952 |  | 27,101 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 8,323 |  | 6,938 |
Profit (loss) for the period of JointVentures |  | ₩ (2,046) |  | ₩ (3,253) |
Datang Chifeng Renewable Power |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | CHINA |  | CHINA |
Percentage of ownership | [3] | 40.00% |  | 40.00% |
Acquisition cost |  | ₩ 121,928 |  | ₩ 121,928 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 171,055 |  | 166,535 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (18,859) |  | 0 |
Share of income (loss) |  | 14,808 |  | 14,079 |
Other comprehensive income (loss) |  | (842) |  | (9,559) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 166,162 |  | 171,055 |
Share in net assets |  | 166,211 |  | 171,105 |
Total assets |  | 751,551 |  | 762,605 |
Total liabilities |  | 336,024 |  | 334,843 |
Net assets |  | 415,527 |  | 427,762 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | (49) |  | (50) |
Sales of JointVentures |  | 117,270 |  | 113,329 |
Profit (loss) for the period of JointVentures |  | ₩ 37,159 |  | ₩ 35,294 |
Datang KEPCO Chaoyang Renewable Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | CHINA |  | CHINA |
Percentage of ownership | [3] | 40.00% |  | 40.00% |
Acquisition cost |  | ₩ 10,858 |  | ₩ 10,858 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 11,060 |  | 10,843 |
Acquisition |  | 0 | [4] | 0 |
Disposal |  | 0 | [4] | 0 |
Dividends received |  | 0 | [4] | 0 |
Share of income (loss) |  | 582 | [4] | 837 |
Other comprehensive income (loss) |  | (1,214) | [4] | (620) |
Others (book value) |  | 29,014 | [4] | 0 |
Ending balance |  | 39,442 | [4] | 11,060 |
Share in net assets |  | 39,442 |  | 11,060 |
Total assets |  | 190,951 |  | 60,913 |
Total liabilities |  | 92,347 |  | 33,264 |
Net assets |  | 98,604 |  | 27,649 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 18,824 |  | 8,442 |
Profit (loss) for the period of JointVentures |  | ₩ 2,557 |  | ₩ 2,094 |
Rabigh Electricity Company |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | SAUDI ARABIA |  | SAUDI ARABIA |
Percentage of ownership | [3] | 40.00% |  | 40.00% |
Acquisition cost |  | ₩ 109,743 |  | ₩ 109,743 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 99,356 |  | 97,802 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (29,067) |  | (18,112) |
Share of income (loss) |  | 13,305 |  | 35,769 |
Other comprehensive income (loss) |  | 22,371 |  | (15,227) |
Others (book value) |  | (637) |  | (876) |
Ending balance |  | 105,328 |  | 99,356 |
Share in net assets |  | 178,256 |  | 171,248 |
Total assets |  | 2,448,690 |  | 2,364,522 |
Total liabilities |  | 2,003,050 |  | 1,936,403 |
Net assets |  | 445,640 |  | 428,119 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | (70,977) |  | (70,978) |
Others (consolidated FS) |  | (1,951) |  | (914) |
Sales of JointVentures |  | 274,184 |  | 287,105 |
Profit (loss) for the period of JointVentures |  | ₩ 38,789 |  | ₩ 78,948 |
Rabigh Operation & Maintenance Company |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Maintenance of utility plant |  | Maintenance of utility plant |
Location |  | SAUDI ARABIA |  | SAUDI ARABIA |
Percentage of ownership | [3] | 40.00% |  | 40.00% |
Acquisition cost |  | ₩ 70 |  | ₩ 70 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 3,987 |  | 4,427 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (1,147) |  | (2,130) |
Share of income (loss) |  | 2,820 |  | 2,236 |
Other comprehensive income (loss) |  | 174 |  | (546) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 5,834 |  | 3,987 |
Share in net assets |  | 5,834 |  | 3,987 |
Total assets |  | 26,172 |  | 19,992 |
Total liabilities |  | 11,587 |  | 10,025 |
Net assets |  | 14,585 |  | 9,967 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 26,387 |  | 22,668 |
Profit (loss) for the period of JointVentures |  | ₩ 7,173 |  | ₩ 5,668 |
Jamaica Public Service Company Limited |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | JAMAICA |  | JAMAICA |
Percentage of ownership | [3] | 40.00% |  | 40.00% |
Acquisition cost |  | ₩ 301,910 |  | ₩ 301,910 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 221,153 |  | 249,453 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (4,472) |  | 0 |
Share of income (loss) |  | 13,099 |  | 0 |
Other comprehensive income (loss) |  | 9,852 |  | (28,300) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 239,632 |  | 221,153 |
Share in net assets |  | 227,434 |  | 209,464 |
Total assets |  | 1,396,421 |  | 1,276,279 |
Total liabilities |  | 827,837 |  | 752,617 |
Net assets |  | 568,584 |  | 523,662 |
Investment differential |  | (80,161) |  | (80,161) |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 92,359 |  | 91,850 |
Sales of JointVentures |  | 992,677 |  | 946,365 |
Profit (loss) for the period of JointVentures |  | ₩ 32,507 |  | ₩ 24,601 |
KW Nuclear Components Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Manufacturing |  | Manufacturing |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 45.00% |  | 45.00% |
Acquisition cost |  | ₩ 833 |  | ₩ 833 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 6,703 |  | 7,133 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (208) |  | (208) |
Share of income (loss) |  | 1,213 |  | (222) |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 7,708 |  | 6,703 |
Share in net assets |  | 7,884 |  | 6,962 |
Total assets |  | 24,598 |  | 25,693 |
Total liabilities |  | 7,077 |  | 10,221 |
Net assets |  | 17,521 |  | 15,472 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | (176) |  | (259) |
Sales of JointVentures |  | 6,031 |  | 6,486 |
Profit (loss) for the period of JointVentures |  | ₩ 2,543 |  | ₩ 1,493 |
Busan Shinho Solar Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 25.00% |  | 25.00% |
Acquisition cost |  | ₩ 2,100 |  | ₩ 2,100 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 4,346 |  | 3,814 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (340) |  | (63) |
Share of income (loss) |  | 755 |  | 595 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 4,761 |  | 4,346 |
Share in net assets |  | 4,761 |  | 4,346 |
Total assets |  | 45,538 |  | 47,959 |
Total liabilities |  | 26,494 |  | 30,573 |
Net assets |  | 19,044 |  | 17,386 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 7,901 |  | 7,984 |
Profit (loss) for the period of JointVentures |  | ₩ 3,018 |  | ₩ 2,383 |
GS Donghae Electric Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 34.00% |  | 34.00% |
Acquisition cost |  | ₩ 204,000 |  | ₩ 204,000 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 220,727 |  | 205,948 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 20,061 |  | 14,714 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | (197) |  | 65 |
Ending balance |  | 240,591 |  | 220,727 |
Share in net assets |  | 240,591 |  | 220,727 |
Total assets |  | 2,259,129 |  | 2,179,465 |
Total liabilities |  | 1,551,509 |  | 1,530,266 |
Net assets |  | 707,620 |  | 649,199 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 787,425 |  | 351,814 |
Profit (loss) for the period of JointVentures |  | ₩ 58,976 |  | ₩ 43,180 |
Global Trade Of Power System Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Exporting products and technology of small or medium business by proxy |  | Exporting products and technology of small or medium business by proxy |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 29.00% |  | 29.00% |
Acquisition cost |  | ₩ 290 |  | ₩ 290 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 577 |  | 477 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (62) |  | 100 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 515 |  | 577 |
Share in net assets |  | 515 |  | 577 |
Total assets |  | 2,039 |  | 3,576 |
Total liabilities |  | 263 |  | 1,586 |
Net assets |  | 1,776 |  | 1,990 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 1,368 |  | 4,079 |
Profit (loss) for the period of JointVentures |  | ₩ (134) |  | ₩ 365 |
Expressway Solar-light Power Generation Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 29.00% |  | 29.00% |
Acquisition cost |  | ₩ 1,856 |  | ₩ 1,856 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 2,463 |  | 2,343 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 213 |  | 120 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 2,676 |  | 2,463 |
Share in net assets |  | 2,676 |  | 2,463 |
Total assets |  | 18,443 |  | 19,143 |
Total liabilities |  | 9,215 |  | 10,651 |
Net assets |  | 9,228 |  | 8,492 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 2,986 |  | 3,018 |
Profit (loss) for the period of JointVentures |  | 692 |  | ₩ 643 |
KODE NOVUS I LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  |  |  | Power generation |
Location |  |  |  | USA |
Percentage of ownership | [3] |  |  | 50.00% |
Acquisition cost |  |  |  | ₩ 19,213 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 0 |  | 0 |
Acquisition |  | 0 | [5] | 0 |
Disposal |  | 0 | [5] | 0 |
Dividends received |  | 0 | [5] | 0 |
Share of income (loss) |  | 1,374 | [5] | 0 |
Other comprehensive income (loss) |  | (1,374) | [5] | 0 |
Others (book value) |  | 0 | [5] | 0 |
Ending balance |  | 0 | [5] | 0 |
Share in net assets |  |  |  | (53,689) |
Total assets |  |  |  | 755 |
Total liabilities |  |  |  | 108,132 |
Net assets |  | 0 |  | (107,377) |
Investment differential |  |  |  | 0 |
Intercompany transaction |  |  |  | 0 |
Others (consolidated FS) |  |  |  | 53,689 |
Sales of JointVentures |  |  |  | 14 |
Profit (loss) for the period of JointVentures |  |  |  | (8,117) |
Unrecognized equity interest |  | 0 |  | 8,706 |
Accumulated unrecognized equity interest |  | 0 |  | ₩ 53,689 |
KODE NOVUS II LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  |  |  | Power generation |
Location |  |  |  | USA |
Percentage of ownership | [3] |  |  | 50.00% |
Acquisition cost |  |  |  | ₩ 12,756 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 0 |  | 0 |
Acquisition |  | 0 | [6] | 0 |
Disposal |  | 0 | [6] | 0 |
Dividends received |  | 0 | [6] | 0 |
Share of income (loss) |  | 810 | [6] | 0 |
Other comprehensive income (loss) |  | (810) | [6] | 0 |
Others (book value) |  | 0 | [6] | 0 |
Ending balance |  | 0 | [6] | 0 |
Share in net assets |  |  |  | (23,696) |
Total assets |  |  |  | 292 |
Total liabilities |  |  |  | 47,683 |
Net assets |  | 0 |  | (47,391) |
Investment differential |  |  |  | 0 |
Intercompany transaction |  |  |  | 0 |
Others (consolidated FS) |  |  |  | 23,696 |
Profit (loss) for the period of JointVentures |  |  |  | (6,018) |
Unrecognized equity interest |  | 0 |  | 181 |
Accumulated unrecognized equity interest |  | ₩ 0 |  | ₩ 23,696 |
Daejung Offshore Wind Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 49.90% |  | 49.90% |
Acquisition cost |  | ₩ 5,190 |  | ₩ 5,190 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 2,969 |  | 3,015 |
Acquisition |  | 0 |  | 200 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (300) |  | (246) |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 2,669 |  | 2,969 |
Share in net assets |  | 2,669 |  | 2,969 |
Total assets |  | 6,440 |  | 6,193 |
Total liabilities |  | 1,091 |  | 243 |
Net assets |  | 5,349 |  | 5,950 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 0 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ (590) |  | ₩ (493) |
Shareholders' agreements that may cause future economic resource or cash outflows |  | In case Samsung Heavy Industries Co., Ltd., a co-participant of the joint venture agreement, decides to dispose of its shares in Daejung Offshore Wind Power Co., Ltd., the Company is obligated to acquire those shares after evaluating the economic feasibility of the facilities installed by Samsung Heavy Industries Co., Ltd. |  | In case Samsung Heavy Industries Co., Ltd., a co-participant of the joint venture agreement, decides to dispose of its shares in Daejung Offshore Wind Power Co., Ltd., the Company is obligated to acquire those shares after evaluating the economic feasibility of the facilities installed by Samsung Heavy Industries Co., Ltd. |
Amman Asia Electric Power Company |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation | [1] | Power generation | [2]
Location |  | JORDAN | [1] | JORDAN | [2]
Percentage of ownership | [3] | 60.00% | [1] | 60.00% | [2]
Acquisition cost |  | ₩ 111,476 | [1] | ₩ 111,476 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 145,676 | [2] | 153,857 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | (12,213) |
Share of income (loss) |  | 19,604 |  | 19,957 |
Other comprehensive income (loss) |  | 12,077 |  | (15,925) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 177,357 | [1] | 145,676 | [2]
Share in net assets |  | 177,445 |  | 145,764 |
Total assets |  | 792,532 |  | 759,114 |
Total liabilities |  | 496,791 |  | 516,174 |
Net assets |  | 295,741 |  | 242,940 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | (88) |  | (88) |
Sales of JointVentures |  | 23,676 |  | 18,034 |
Profit (loss) for the period of JointVentures |  | ₩ 32,674 |  | ₩ 33,514 |
KAPES, Inc. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | R&D | [1] | R&D | [2]
Location |  | KOREA | [1] | KOREA | [2]
Percentage of ownership | [3] | 51.00% | [1] | 51.00% | [2]
Acquisition cost |  | ₩ 5,629 | [1] | ₩ 5,629 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 7,476 | [2] | 4,758 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 1,543 |  | 2,752 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 60 |  | (34) |
Ending balance |  | 9,079 | [1] | 7,476 | [2]
Share in net assets |  | 9,079 |  | 7,476 |
Total assets |  | 82,494 |  | 70,679 |
Total liabilities |  | 64,691 |  | 56,021 |
Net assets |  | 17,803 |  | 14,658 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 57,047 |  | 129,962 |
Profit (loss) for the period of JointVentures |  | ₩ 4,710 |  | ₩ 5,397 |
Dangjin Eco Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 34.00% |  | 34.00% |
Acquisition cost |  | ₩ 61,540 |  | ₩ 61,540 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 57,928 |  | 53,253 |
Acquisition |  | 0 |  | 5,440 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (38,042) |  | (752) |
Other comprehensive income (loss) |  | (65) |  | (3) |
Others (book value) |  | 91 |  | (10) |
Ending balance |  | 19,912 |  | 57,928 |
Share in net assets |  | 17,294 |  | 55,310 |
Total assets |  | 51,125 |  | 163,197 |
Total liabilities |  | 260 |  | 521 |
Net assets |  | 50,865 |  | 162,676 |
Investment differential |  | 2,618 |  | 2,618 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ (111,789) |  | ₩ (2,182) |
Honam Wind Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 29.00% |  | 29.00% |
Acquisition cost |  | ₩ 3,480 |  | ₩ 3,480 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 4,302 |  | 4,451 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (348) |  | (487) |
Share of income (loss) |  | 906 |  | 338 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 4,860 |  | 4,302 |
Share in net assets |  | 4,828 |  | 4,270 |
Total assets |  | 43,713 |  | 39,675 |
Total liabilities |  | 27,066 |  | 24,951 |
Net assets |  | 16,647 |  | 14,724 |
Investment differential |  | 32 |  | 32 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 7,700 |  | 5,961 |
Profit (loss) for the period of JointVentures |  | ₩ 3,122 |  | ₩ 1,166 |
Chun-cheon Energy Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 29.90% |  | 29.90% |
Acquisition cost |  | ₩ 52,700 |  | ₩ 52,700 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 48,118 |  | 50,592 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (5,613) |  | (2,474) |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 42,505 |  | 48,118 |
Share in net assets |  | 42,502 |  | 48,115 |
Total assets |  | 666,050 |  | 699,652 |
Total liabilities |  | 523,904 |  | 538,733 |
Net assets |  | 142,146 |  | 160,919 |
Investment differential |  | 3 |  | 3 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 320,950 |  | 164,294 |
Profit (loss) for the period of JointVentures |  | ₩ (19,133) |  | ₩ (8,145) |
Yeonggwangbaeksu Wind Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities | [7] | Power generation |  | Power generation |
Location | [7] | KOREA |  | KOREA |
Percentage of ownership | [3],[7] | 15.00% |  | 15.00% |
Acquisition cost | [7] | ₩ 3,000 |  | ₩ 3,000 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 2,734 | [7] | 2,689 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 109 |  | 45 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance | [7] | 2,843 |  | 2,734 |
Share in net assets |  | 2,837 |  | 2,728 |
Total assets |  | 99,368 |  | 94,810 |
Total liabilities |  | 80,450 |  | 76,621 |
Net assets |  | 18,918 |  | 18,189 |
Investment differential |  | 6 |  | 6 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 11,366 |  | 11,124 |
Profit (loss) for the period of JointVentures |  | ₩ 734 |  | ₩ 297 |
Nghi Son 2 Power LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | VIETNAM |  | VIETNAM |
Percentage of ownership | [3] | 50.00% |  | 50.00% |
Acquisition cost |  | ₩ 2,781 |  | ₩ 2,781 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 183 |  | 229 |
Acquisition |  | 0 |  | 993 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 2,657 |  | (1,039) |
Other comprehensive income (loss) |  | (2,840) |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 0 |  | 183 |
Share in net assets |  | (41,660) |  | 183 |
Total assets |  | 477,947 |  | 741 |
Total liabilities |  | 561,266 |  | 376 |
Net assets |  | (83,319) |  | 365 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 41,660 |  | 0 |
Sales of JointVentures |  | 144,381 |  |  |
Profit (loss) for the period of JointVentures |  | 8,979 |  | (2,068) |
Unrecognized equity interest |  | 41,659 |  | 0 |
Accumulated unrecognized equity interest |  | ₩ 41,659 |  | ₩ 0 |
Kelar S.A |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation | [1] | Power generation | [2]
Location |  | CHILE | [1] | CHILE | [2]
Percentage of ownership | [3] | 65.00% | [1] | 65.00% | [2]
Acquisition cost |  | ₩ 78,060 | [1] | ₩ 77,220 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 67,233 | [2] | 0 |
Acquisition |  | 0 |  | 73,040 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 2,732 |  | (633) |
Other comprehensive income (loss) |  | 2,859 |  | (5,175) |
Others (book value) |  | 0 |  | 1 |
Ending balance |  | 72,824 | [1] | 67,233 | [2]
Share in net assets |  | 70,246 |  | 65,125 |
Total assets |  | 626,206 |  | 613,293 |
Total liabilities |  | 518,135 |  | 513,101 |
Net assets |  | 108,071 |  | 100,192 |
Investment differential |  | 2,470 |  | 2,424 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 108 |  | (316) |
Sales of JointVentures |  | 87,507 |  | 90,435 |
Profit (loss) for the period of JointVentures |  | 8,587 |  | 17,590 |
Unrecognized equity interest |  | 0 |  | (61,309) |
Accumulated unrecognized equity interest |  | ₩ 0 |  | ₩ 0 |
PT. Tanjung Power Indonesia |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | INDONESIA |  | INDONESIA |
Percentage of ownership | [3] | 35.00% |  | 35.00% |
Acquisition cost |  | ₩ 746 |  | ₩ 746 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 1,776 |  | 1,946 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 3,373 |  | 2,112 |
Other comprehensive income (loss) |  | 1,928 |  | (2,281) |
Others (book value) |  | 4 |  | (1) |
Ending balance |  | 7,081 |  | 1,776 |
Share in net assets |  | 7,081 |  | 1,776 |
Total assets |  | 505,551 |  | 374,702 |
Total liabilities |  | 485,321 |  | 369,627 |
Net assets |  | 20,230 |  | 5,075 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 109,029 |  | 209,923 |
Profit (loss) for the period of JointVentures |  | ₩ 9,717 |  | ₩ 6,219 |
Incheon New Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 29.00% |  | 29.00% |
Acquisition cost |  | ₩ 461 |  | ₩ 461 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 619 |  | 563 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | (41) |  | 0 |
Share of income (loss) |  | 1 |  | 56 |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 579 |  | 619 |
Share in net assets |  | 579 |  | 619 |
Total assets |  | 6,559 |  | 7,194 |
Total liabilities |  | 4,563 |  | 5,059 |
Net assets |  | 1,996 |  | 2,135 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 2,687 |  | 2,972 |
Profit (loss) for the period of JointVentures |  | ₩ 3 |  | ₩ 184 |
Seokmun Energy Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 29.00% |  | 29.00% |
Acquisition cost |  | ₩ 15,370 |  | ₩ 15,370 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 13,786 |  | 391 |
Acquisition |  | 0 |  | 14,790 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 2,965 |  | (1,219) |
Other comprehensive income (loss) |  | 0 |  | (176) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 16,751 |  | 13,786 |
Share in net assets |  | 16,751 |  | 13,786 |
Total assets |  | 253,544 |  | 247,735 |
Total liabilities |  | 195,782 |  | 200,197 |
Net assets |  | 57,762 |  | 47,538 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 50,052 |  | 35,135 |
Profit (loss) for the period of JointVentures |  | ₩ 10,224 |  | ₩ (3,939) |
Daehan Wind Power PSC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | JORDAN |  | JORDAN |
Percentage of ownership | [3] | 50.00% |  | 50.00% |
Acquisition cost |  | ₩ 3,191 |  | ₩ 285 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 0 |  | 16 |
Acquisition |  | 2,288 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (1,311) |  | (40) |
Other comprehensive income (loss) |  | 37 |  | 22 |
Others (book value) |  | 618 |  | 2 |
Ending balance |  | 1,632 |  | 0 |
Share in net assets |  | 1,632 |  | (412) |
Total assets |  | 33,081 |  | 928 |
Total liabilities |  | 29,817 |  | 1,752 |
Net assets |  | 3,264 |  | (824) |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 412 |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | (1,799) |  | (904) |
Unrecognized equity interest |  | (412) |  | 412 |
Accumulated unrecognized equity interest |  | ₩ 0 |  | ₩ 412 |
Barakah One Company |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities | [8] | Power generation |  | Power generation |
Location | [8] | UAE |  | UAE |
Percentage of ownership | [3],[8] | 18.00% |  | 18.00% |
Acquisition cost | [8] | ₩ 118 |  | ₩ 118 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 626 | [8] | 116 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 2,162 |  | 570 |
Other comprehensive income (loss) |  | 1,019 |  | (60) |
Others (book value) |  | 0 |  | 0 |
Ending balance | [8] | 3,807 |  | 626 |
Share in net assets |  | 3,807 |  | 626 |
Total assets |  | 21,480,187 |  | 17,574,885 |
Total liabilities |  | 21,459,035 |  | 17,571,409 |
Net assets |  | 21,152 |  | 3,476 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ (3,062) |  | ₩ (1,358) |
Nawah Energy Company |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities | [8] | Operation of utility plant |  | Operation of utility plant |
Location | [8] | UAE |  | UAE |
Percentage of ownership | [3],[8] | 18.00% |  | 18.00% |
Acquisition cost | [8] | ₩ 296 |  | ₩ 296 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 258 | [8] | 290 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 4 |  | (5) |
Other comprehensive income (loss) |  | 12 |  | (27) |
Others (book value) |  | 0 |  | 0 |
Ending balance | [8] | 274 |  | 258 |
Share in net assets |  | 274 |  | 258 |
Total assets |  | 70,386 |  | 1,459 |
Total liabilities |  | 68,864 |  | 23 |
Net assets |  | 1,522 |  | 1,436 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 0 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ 0 |  | ₩ (11) |
MOMENTUM |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | International thermonuclear experimental reactor construction management |  | International thermonuclear experimental reactor construction management |
Location |  | FRANCE |  | FRANCE |
Percentage of ownership | [3] | 33.33% |  | 33.33% |
Acquisition cost |  | ₩ 1 |  | ₩ 1 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 391 |  | 67 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 195 |  | 321 |
Other comprehensive income (loss) |  | (4) |  | 3 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 582 |  | 391 |
Share in net assets |  | 582 |  | 391 |
Total assets |  | 7,476 |  | 5,028 |
Total liabilities |  | 5,730 |  | 3,854 |
Net assets |  | 1,746 |  | 1,174 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 16,933 |  | 11,555 |
Profit (loss) for the period of JointVentures |  | ₩ 520 |  | ₩ 939 |
Daegu Green Power |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 29.00% |  | 29.00% |
Acquisition cost |  | ₩ 46,225 |  | ₩ 46,225 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 42,391 |  | 47,528 |
Acquisition |  | 0 |  | 0 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (1,283) |  | (5,133) |
Other comprehensive income (loss) |  | 0 |  | 0 |
Others (book value) |  | 2 |  | (4) |
Ending balance |  | 41,110 |  | 42,391 |
Share in net assets |  | 19,514 |  | 20,795 |
Total assets |  | 591,263 |  | 602,809 |
Total liabilities |  | 523,972 |  | 531,103 |
Net assets |  | 67,291 |  | 71,706 |
Investment differential |  | 84 |  | 0 |
Intercompany transaction |  | 0 |  | 84 |
Others (consolidated FS) |  | 21,512 |  | 21,512 |
Sales of JointVentures |  | 291,734 |  | 256,359 |
Profit (loss) for the period of JointVentures |  | ₩ (4,424) |  | ₩ (17,700) |
Significant restrictions on its abilities |  | Principals on subordinated loans or dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained. Shares cannot be wholly or partially transferred without prior written consent of financial institutions is obtained. |  | Principals on subordinated loans or dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained. Shares cannot be wholly or partially transferred without prior written consent of financial institutions is obtained. |
Yeonggwang Wind Power Co., Ltd |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | KOREA |  | KOREA |
Percentage of ownership | [3] | 41.00% |  | 41.00% |
Acquisition cost |  | ₩ 15,375 |  | ₩ 15,375 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 15,294 |  | 0 |
Acquisition |  | 0 |  | 15,375 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 10 |  | (25) |
Other comprehensive income (loss) |  | 0 |  | (56) |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 15,304 |  | 15,294 |
Share in net assets |  | 15,074 |  | 15,063 |
Total assets |  | 255,777 |  | 212,802 |
Total liabilities |  | 219,013 |  | 176,062 |
Net assets |  | 36,764 |  | 36,740 |
Investment differential |  | 230 |  | 231 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 0 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ (145) |  | ₩ (62) |
Chester Solar IV SpA |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation | [1] | Power generation | [2]
Location |  | CHILE | [1] | CHILE | [2]
Percentage of ownership | [3] | 81.82% | [1] | 81.82% | [2]
Acquisition cost |  | ₩ 1,700 | [1] | ₩ 1,700 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 1,700 | [2] | 0 |
Acquisition |  | 0 |  | 1,700 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | 301 |  | 0 |
Other comprehensive income (loss) |  | (150) |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 1,851 | [1] | 1,700 | [2]
Share in net assets |  | 1,794 |  | 1,664 |
Total assets |  | 15,307 |  | 11,660 |
Total liabilities |  | 13,114 |  | 9,626 |
Net assets |  | 2,193 |  | 2,034 |
Investment differential |  | 57 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 36 |
Sales of JointVentures |  | 1,415 |  | 331 |
Profit (loss) for the period of JointVentures |  | ₩ 609 |  | ₩ 151 |
Chester Solar V SpA |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation | [1] | Power generation | [2]
Location |  | CHILE | [1] | CHILE | [2]
Percentage of ownership | [3] | 81.82% | [1] | 81.82% | [2]
Acquisition cost |  | ₩ 525 | [1] | ₩ 525 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 525 | [2] | 0 |
Acquisition |  | 0 |  | 525 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (21) |  | 0 |
Other comprehensive income (loss) |  | (30) |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 474 | [1] | 525 | [2]
Share in net assets |  | 356 |  | 419 |
Total assets |  | 4,759 |  | 2,081 |
Total liabilities |  | 4,324 |  | 1,569 |
Net assets |  | 435 |  | 512 |
Investment differential |  | 118 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 106 |
Sales of JointVentures |  | 298 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ (19) |  | ₩ (49) |
Diego de Almagro Solar SpA |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation | [1] | Power generation | [2]
Location |  | CHILE | [1] | CHILE | [2]
Percentage of ownership | [3] | 81.82% | [1] | 81.82% | [2]
Acquisition cost |  | ₩ 2,091 | [1] | ₩ 2,091 | [2]
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 2,091 | [2] | 0 |
Acquisition |  | 0 |  | 2,091 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (299) |  | 0 |
Other comprehensive income (loss) |  | (129) |  | 0 |
Others (book value) |  | 0 |  | 0 |
Ending balance |  | 1,663 | [1] | 2,091 | [2]
Share in net assets |  | 1,569 |  | 1,993 |
Total assets |  | 21,317 |  | 8,266 |
Total liabilities |  | 19,399 |  | 5,830 |
Net assets |  | 1,918 |  | 2,436 |
Investment differential |  | 94 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 98 |
Sales of JointVentures |  | 78 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ (340) |  | ₩ (103) |
South Jamaica Power Company Limited |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  | Power generation |
Location |  | JAMAICA |  | JAMAICA |
Percentage of ownership | [3] | 20.00% |  | 20.00% |
Acquisition cost |  | ₩ 16,231 |  | ₩ 7,090 |
Book value [Abstract] |  |  |  |  |
Beginning balance |  | 6,704 |  | 0 |
Acquisition |  | 9,141 |  | 7,090 |
Disposal |  | 0 |  | 0 |
Dividends received |  | 0 |  | 0 |
Share of income (loss) |  | (184) |  | 0 |
Other comprehensive income (loss) |  | 463 |  | 0 |
Others (book value) |  | 0 |  | (386) |
Ending balance |  | 16,124 |  | 6,704 |
Share in net assets |  | 16,124 |  | 6,704 |
Total assets |  | 294,341 |  | 153,958 |
Total liabilities |  | 213,723 |  | 120,436 |
Net assets |  | 80,618 |  | 33,522 |
Investment differential |  | 0 |  | 0 |
Intercompany transaction |  | 0 |  | 0 |
Others (consolidated FS) |  | 0 |  | 0 |
Sales of JointVentures |  | 0 |  | 0 |
Profit (loss) for the period of JointVentures |  | ₩ (932) |  | ₩ (755) |
Daesan Green Energy Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | KOREA |  |  |
Percentage of ownership | [3] | 35.00% |  |  |
Acquisition cost |  | ₩ 17,850 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 17,850 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | (417) |  |  |
Other comprehensive income (loss) |  | 0 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 17,433 |  |  |
Share in net assets |  | 17,433 |  |  |
Total assets |  | 52,582 |  |  |
Total liabilities |  | 2,774 |  |  |
Net assets |  | 49,808 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ (1,192) |  |  |
RE Holiday Holdings LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | USA |  |  |
Percentage of ownership | [3] | 50.00% |  |  |
Acquisition cost |  | ₩ 42,948 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 42,948 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | (112) |  |  |
Share of income (loss) |  | 8,055 |  |  |
Other comprehensive income (loss) |  | 203 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 51,094 |  |  |
Share in net assets |  | 51,094 |  |  |
Total assets |  | 334,742 |  |  |
Total liabilities |  | 232,553 |  |  |
Net assets |  | 102,189 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 9,451 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 1,319 |  |  |
RE Pioneer Holdings LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | USA |  |  |
Percentage of ownership | [3] | 50.00% |  |  |
Acquisition cost |  | ₩ 27,891 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 27,891 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | (979) |  |  |
Share of income (loss) |  | 11,585 |  |  |
Other comprehensive income (loss) |  | 401 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 38,898 |  |  |
Share in net assets |  | 38,898 |  |  |
Total assets |  | 252,512 |  |  |
Total liabilities |  | 174,717 |  |  |
Net assets |  | 77,795 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 12,364 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 6,544 |  |  |
RE Barren Ridge 1 Holdings LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | USA |  |  |
Percentage of ownership | [3] | 50.00% |  |  |
Acquisition cost |  | ₩ 28,021 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 28,021 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | (1,114) |  |  |
Share of income (loss) |  | 13,994 |  |  |
Other comprehensive income (loss) |  | 514 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 41,415 |  |  |
Share in net assets |  | 41,415 |  |  |
Total assets |  | 221,304 |  |  |
Total liabilities |  | 138,473 |  |  |
Net assets |  | 82,831 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 10,567 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 8,625 |  |  |
RE Astoria 2 LandCo LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | USA |  |  |
Percentage of ownership | [3] | 50.00% |  |  |
Acquisition cost |  | ₩ 5,188 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 5,188 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | (504) |  |  |
Share of income (loss) |  | 866 |  |  |
Other comprehensive income (loss) |  | (140) |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 5,410 |  |  |
Share in net assets |  | 5,410 |  |  |
Total assets |  | 11,030 |  |  |
Total liabilities |  | 210 |  |  |
Net assets |  | 10,820 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 619 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 583 |  |  |
RE Barren Ridge LandCo LLC |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | USA |  |  |
Percentage of ownership | [3] | 50.00% |  |  |
Acquisition cost |  | ₩ 2,187 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 2,187 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | (202) |  |  |
Share of income (loss) |  | (25) |  |  |
Other comprehensive income (loss) |  | (62) |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 1,898 |  |  |
Share in net assets |  | 1,898 |  |  |
Total assets |  | 3,881 |  |  |
Total liabilities |  | 84 |  |  |
Net assets |  | 3,797 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 248 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 230 |  |  |
Laurel SpA |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities | [1] | Power generation |  |  |
Location | [1] | CHILE |  |  |
Percentage of ownership | [1],[3] | 81.82% |  |  |
Acquisition cost | [1] | ₩ 1,222 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 1,222 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | (309) |  |  |
Other comprehensive income (loss) |  | 8 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance | [1] | 921 |  |  |
Share in net assets |  | 739 |  |  |
Total assets |  | 5,475 |  |  |
Total liabilities |  | 4,572 |  |  |
Net assets |  | 903 |  |  |
Investment differential |  | 182 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ (369) |  |  |
KIAMCO KOWEPO Bannerton Hold Co Pty Ltd |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities | [7] | Power generation |  |  |
Location | [7] | AUSTRALIA |  |  |
Percentage of ownership | [3],[7] | 12.37% |  |  |
Acquisition cost | [7] | ₩ 4,095 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 4,095 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | (23) |  |  |
Other comprehensive income (loss) |  | (132) |  |  |
Others (book value) |  | 0 |  |  |
Ending balance | [7] | 3,940 |  |  |
Share in net assets |  | 3,931 |  |  |
Total assets |  | 31,958 |  |  |
Total liabilities |  | 173 |  |  |
Net assets |  | 31,785 |  |  |
Investment differential |  | 9 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ (222) |  |  |
Chile Solar JV SpA |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | CHILE |  |  |
Percentage of ownership | [3] | 50.00% |  |  |
Acquisition cost |  | ₩ 36,654 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 36,654 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | 4,453 |  |  |
Other comprehensive income (loss) |  | (5,278) |  |  |
Others (book value) |  | 1,036 |  |  |
Ending balance |  | 36,865 |  |  |
Share in net assets |  | 36,865 |  |  |
Total assets |  | 73,740 |  |  |
Total liabilities |  | 10 |  |  |
Net assets |  | 73,730 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 73 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 8,906 |  |  |
Taebaek Gadeoksan Wind Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | KOREA |  |  |
Percentage of ownership | [3] | 46.58% |  |  |
Acquisition cost |  | ₩ 8,500 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 8,500 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | 8 |  |  |
Other comprehensive income (loss) |  | 0 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 8,508 |  |  |
Share in net assets |  | 8,508 |  |  |
Total assets |  | 18,766 |  |  |
Total liabilities |  | 499 |  |  |
Net assets |  | 18,267 |  |  |
Investment differential |  | 0 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 18 |  |  |
Cheong-Song Noraesan Wind Power Co., Ltd. |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | KOREA |  |  |
Percentage of ownership | [3] | 24.76% |  |  |
Acquisition cost |  | ₩ 2,073 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 2,073 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | 0 |  |  |
Other comprehensive income (loss) |  | 0 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 2,073 |  |  |
Share in net assets |  | 2,029 |  |  |
Total assets |  | 8,221 |  |  |
Total liabilities |  | 24 |  |  |
Net assets |  | 8,197 |  |  |
Investment differential |  | 44 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 0 |  |  |
Chester Solar I SpA |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities | [1] | Power generation |  |  |
Location | [1] | CHILE |  |  |
Percentage of ownership | [1],[3] | 81.82% |  |  |
Acquisition cost | [1] | ₩ 1,181 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 1,181 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | 0 |  |  |
Other comprehensive income (loss) |  | 0 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance | [1] | 1,181 |  |  |
Share in net assets |  | 940 |  |  |
Total assets |  | 1,712 |  |  |
Total liabilities |  | 562 |  |  |
Net assets |  | 1,150 |  |  |
Investment differential |  | 241 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 0 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ (81) |  |  |
Solar Philippines Calatagan Corporation |  |  |  |  |
Disclosure of joint ventures [Line Items] |  |  |  |  |
Key operation activities |  | Power generation |  |  |
Location |  | PHILIPPINES |  |  |
Percentage of ownership | [3] | 38.00% |  |  |
Acquisition cost |  | ₩ 47,903 |  |  |
Book value [Abstract] |  |  |  |  |
Acquisition |  | 47,903 |  |  |
Disposal |  | 0 |  |  |
Dividends received |  | 0 |  |  |
Share of income (loss) |  | 0 |  |  |
Other comprehensive income (loss) |  | 0 |  |  |
Others (book value) |  | 0 |  |  |
Ending balance |  | 47,903 |  |  |
Share in net assets |  | 26,764 |  |  |
Total assets |  | 121,650 |  |  |
Total liabilities |  | 51,219 |  |  |
Net assets |  | 70,431 |  |  |
Investment differential |  | 21,139 |  |  |
Intercompany transaction |  | 0 |  |  |
Others (consolidated FS) |  | 0 |  |  |
Sales of JointVentures |  | 16,689 |  |  |
Profit (loss) for the period of JointVentures |  | ₩ 8,732 |  |  |
[1] | The effective percentage of ownership is more than 50%. However, according to the shareholders' agreement, all critical financial and operating decisions must be agreed to by all ownership parties. For this reason, the entities are classified as joint ventures.
[2] | The effective percentage of ownership is more than 100%. However, according to the shareholders' agreement, all critical financial and operating decisions must be agreed to by all ownership parties. For these reasons, the entities are classified as joint ventures.
[3] | The percentage of ownership shown above is after considering the treasury stocks and others.
[4] | Datang Chaoyang Renewable Power Co., Ltd. was merged with Datang KEPCO Chaoyang Renewable Power Co., Ltd. during the year ended December 31, 2018.
[5] | The Company reclassified its shares of KODE NOVUS I LLC to financial assets at FVOCI during the year ended December 31, 2018 due to non-participation of capital increase that resulted in loss of significant influence.
[6] | The Company sold all of its shares of KODE NOVUS II LLC during the year ended December 31, 2018.
[7] | The effective percentage of ownership is less than 20%. However, the Company can exercise significant influence by virtue of its contractual right to appoint a director to the board of directors of the entity.
[8] | The effective percentage of ownership is less than 20% but the Company has joint control over the entity as decisions on the major activities require the unanimous consent of the parties that collectively control the entity

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