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Investments in Joint Ventures (Details) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of joint ventures [Line Items]    
Acquisition cost ₩ 1,943,392 ₩ 1,504,710
Book value [Abstract]    
Beginning balance 1,663,029 1,813,525
Acquisition 289,068 90,162
Disposal 0 (5,359)
Dividends received (139,519) (79,601)
Share of income (loss) 220,032 129,402
Other comprehensive income (loss) (113,377) (22,189)
Others (book value) 513 (262,911)
Ending balance ₩ 1,919,746 ₩ 1,663,029
KEPCO-Uhde Inc.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership [1] 52.80% 52.80%
Effective percentage of ownership [2] 50.80% 50.80%
Acquisition cost ₩ 11,355 ₩ 11,355
Book value [Abstract]    
Beginning balance 134 188
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (34) (54)
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 100 134
Share in net assets 100 134
Total assets 208 270
Total liabilities 11 7
Net assets 197 263
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 ₩ (66) ₩ (107)
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 49.00% 49.00%
Effective percentage of ownership [2] 49.00% 49.00%
Acquisition cost ₩ 44,405 ₩ 44,405
Book value [Abstract]    
Beginning balance 18,318 27,251
Acquisition 0 0
Disposal 0 0
Dividends received (4,337) (2,176)
Share of income (loss) 5,919 5,288
Other comprehensive income (loss) (6,636) (12,045)
Others (book value) 0 0
Ending balance 13,264 18,318
Share in net assets 13,264 18,318
Total assets 27,073 37,389
Total liabilities 4 5
Net assets 27,069 37,384
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 ₩ 12,080 ₩ (159)
Shuweihat Asia Operation & Maintenance Company    
Disclosure of joint ventures [Line Items]    
Key operation activities Maintenance of utility plant Maintenance of utility plant
Location CAYMAN CAYMAN
Percentage of ownership [1] 55.00% 55.00%
Effective percentage of ownership [2] 55.00% 55.00%
Acquisition cost ₩ 30 ₩ 30
Book value [Abstract]    
Beginning balance 1,408 792
Acquisition 0 0
Disposal 0 0
Dividends received (922) (907)
Share of income (loss) 1,074 1,040
Other comprehensive income (loss) (503) (1)
Others (book value) 0 484
Ending balance 1,057 1,408
Share in net assets 1,057 1,408
Total assets 1,960 2,605
Total liabilities 38 45
Net assets 1,922 2,560
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 2,689 2,570
Profit (loss) for the period of JointVentures ₩ 1,953 ₩ 1,892
Waterbury Lake Uranium L.P.    
Disclosure of joint ventures [Line Items]    
Key operation activities Resources development Resources development
Location CANADA CANADA
Percentage of ownership 33.10% 33.48%
Effective percentage of ownership [2] 33.10% 33.41%
Acquisition cost ₩ 26,602 ₩ 26,602
Book value [Abstract]    
Beginning balance 20,562 19,032
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 4 22
Other comprehensive income (loss) (769) 1,508
Others (book value) 0 0
Ending balance 19,797 20,562
Share in net assets 19,797 20,562
Total assets 59,885 61,548
Total liabilities 77 4
Net assets 59,808 61,544
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 ₩ 0
ASM-BG Investicii AD    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location BULGARIA BULGARIA
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 16,101 ₩ 16,101
Book value [Abstract]    
Beginning balance 19,376 21,379
Acquisition 0 0
Disposal 0 0
Dividends received (4,206) (4,760)
Share of income (loss) 2,575 2,442
Other comprehensive income (loss) 455 315
Others (book value) 0 0
Ending balance 18,200 19,376
Share in net assets 18,200 19,376
Total assets 80,261 78,191
Total liabilities 43,861 39,439
Net assets 36,400 38,752
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 13,355 13,200
Profit (loss) for the period of JointVentures ₩ 5,150 ₩ 4,894
RES Technology AD    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location BULGARIA BULGARIA
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 15,595 ₩ 15,595
Book value [Abstract]    
Beginning balance 16,248 15,209
Acquisition 0 0
Disposal 0 0
Dividends received (1,981) 0
Share of income (loss) 1,051 963
Other comprehensive income (loss) 612 76
Others (book value) 0 0
Ending balance 15,930 16,248
Share in net assets 15,930 16,248
Total assets 67,232 66,821
Total liabilities 35,372 34,325
Net assets 31,860 32,496
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 8,381 8,384
Profit (loss) for the period of JointVentures ₩ 2,102 ₩ 1,914
KV Holdings, Inc.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location PHILIPPINES PHILIPPINES
Percentage of ownership 40.00% 40.00%
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 2,103 ₩ 2,103
Book value [Abstract]    
Beginning balance 2,441 1,918
Acquisition 0 0
Disposal 0 0
Dividends received (617) (372)
Share of income (loss) 580 751
Other comprehensive income (loss) 1 144
Others (book value) 0 0
Ending balance 2,405 2,441
Share in net assets 2,405 2,441
Total assets 6,013 6,101
Total liabilities 0 0
Net assets 6,013 6,101
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 27 25
Profit (loss) for the period of JointVentures ₩ 1,449 ₩ 1,876
KEPCO SPC Power Corporation    
Disclosure of joint ventures [Line Items]    
Key operation activities Construction and operation of utility plant Construction and operation of utility plant
Location PHILIPPINES PHILIPPINES
Percentage of ownership [1] 75.20% 75.20%
Effective percentage of ownership [2] 75.20% 75.20%
Acquisition cost ₩ 94,579 ₩ 94,579
Book value [Abstract]    
Beginning balance 214,794 208,306
Acquisition 0 0
Disposal 0 0
Dividends received (48,486) (45,349)
Share of income (loss) 48,479 48,043
Other comprehensive income (loss) (12,995) 3,781
Others (book value) (129) 13
Ending balance 201,663 214,794
Share in net assets 201,663 214,794
Total assets 289,271 308,274
Total liabilities 21,102 22,643
Net assets 268,169 285,631
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 184,481 187,867
Profit (loss) for the period of JointVentures ₩ 66,311 ₩ 64,152
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 40.00% 40.00%
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 16,621 ₩ 16,621
Book value [Abstract]    
Beginning balance 8,149 9,981
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (1,718) (2,050)
Other comprehensive income (loss) 99 218
Others (book value) 0 0
Ending balance 6,530 8,149
Share in net assets 6,530 8,149
Total assets 69,668 77,313
Total liabilities 53,343 56,941
Net assets 16,325 20,372
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 7,157 6,106
Profit (loss) for the period of JointVentures ₩ (4,295) ₩ (5,175)
Datang Chifeng Renewable Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHINA CHINA
Percentage of ownership 40.00% 40.00%
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 121,928 ₩ 121,928
Book value [Abstract]    
Beginning balance 185,307 166,162
Acquisition 0 0
Disposal 0 0
Dividends received (13,453) 0
Share of income (loss) 15,317 16,325
Other comprehensive income (loss) 1,307 2,820
Others (book value) 0 0
Ending balance 188,478 185,307
Share in net assets 188,478 185,307
Total assets 747,990 765,598
Total liabilities 276,796 302,329
Net assets 471,194 463,269
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 119,955 122,398
Profit (loss) for the period of JointVentures ₩ 39,439 ₩ 40,371
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 40.00% 40.00%
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 39,872 ₩ 39,872
Book value [Abstract]    
Beginning balance 41,024 39,442
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 1,231 875
Other comprehensive income (loss) 275 707
Others (book value) 0 0
Ending balance 42,530 41,024
Share in net assets 42,530 41,024
Total assets 182,342 189,157
Total liabilities 76,018 86,596
Net assets 106,324 102,561
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 26,378 23,910
Profit (loss) for the period of JointVentures ₩ 2,914 ₩ 2,188
Rabigh Electricity Company    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location SAUDI ARABIA SAUDI ARABIA
Percentage of ownership 40.00% 40.00%
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 109,743 ₩ 109,743
Book value [Abstract]    
Beginning balance 109,096 105,328
Acquisition 0 0
Disposal 0 0
Dividends received (14,956) 0
Share of income (loss) 25,474 4,355
Other comprehensive income (loss) (22,458) (1,734)
Others (book value) 1 1,147
Ending balance 97,157 109,096
Share in net assets 158,472 175,349
Total assets 2,294,880 2,538,719
Total liabilities 1,898,701 2,100,347
Net assets 396,179 438,372
Investment differential 0 0
Intercompany transaction (60,511) (65,450)
Others (consolidated FS) (804) (803)
Sales of JointVentures 293,722 208,514
Profit (loss) for the period of JointVentures ₩ 94,927 ₩ 1,567
Rabigh Operation & Maintenance Company Limited    
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 40.00% 40.00%
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 70 ₩ 70
Book value [Abstract]    
Beginning balance 6,879 5,834
Acquisition 0 0
Disposal 0 0
Dividends received (5,340) (2,222)
Share of income (loss) 2,788 3,070
Other comprehensive income (loss) (514) 197
Others (book value) 0 0
Ending balance 3,813 6,879
Share in net assets 3,813 6,879
Total assets 28,666 36,121
Total liabilities 19,133 18,923
Net assets 9,533 17,198
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 26,268 23,777
Profit (loss) for the period of JointVentures ₩ 7,318 ₩ 7,203
Jamaica Public Service Company Limited    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location JAMAICA JAMAICA
Percentage of ownership 40.00% 40.00%
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 301,910 ₩ 301,910
Book value [Abstract]    
Beginning balance 253,607 239,632
Acquisition 0 0
Disposal 0 0
Dividends received (4,352) (4,631)
Share of income (loss) 24,669 10,166
Other comprehensive income (loss) (10,891) 8,440
Others (book value) 3,188 0
Ending balance 266,221 253,607
Share in net assets 254,798 240,976
Total assets 1,664,412 1,543,049
Total liabilities 1,027,418 940,609
Net assets 636,994 602,440
Investment differential 29,357 (80,161)
Intercompany transaction 0 0
Others (consolidated FS) (17,934) 92,792
Sales of JointVentures 1,042,422 1,035,399
Profit (loss) for the period of JointVentures ₩ 35,916 ₩ 32,828
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied and prior written consent of financial institutions is obtained.  
KW Nuclear Components Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Manufacturing Manufacturing
Location KOREA KOREA
Percentage of ownership 45.00% 45.00%
Effective percentage of ownership [2] 45.00% 45.00%
Acquisition cost ₩ 833 ₩ 833
Book value [Abstract]    
Beginning balance 9,052 7,708
Acquisition 0 0
Disposal 0 0
Dividends received (833) (208)
Share of income (loss) 2,952 1,552
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 11,171 9,052
Share in net assets 11,348 9,228
Total assets 44,571 31,326
Total liabilities 19,354 10,820
Net assets 25,217 20,506
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) (177) (176)
Sales of JointVentures 19,762 11,305
Profit (loss) for the period of JointVentures ₩ 7,262 ₩ 3,837
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 25.00% 25.00%
Effective percentage of ownership [2] 25.00% 25.00%
Acquisition cost ₩ 2,100 ₩ 2,100
Book value [Abstract]    
Beginning balance 5,045 4,761
Acquisition 0 0
Disposal 0 0
Dividends received (330) (430)
Share of income (loss) 663 714
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 5,378 5,045
Share in net assets 5,378 5,045
Total assets 39,266 42,318
Total liabilities 17,754 22,137
Net assets 21,512 20,181
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 7,296 7,843
Profit (loss) for the period of JointVentures ₩ 2,652 ₩ 2,856
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained.  
GS Donghae Electric Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities   Power generation
Location   KOREA
Percentage of ownership   0.00%
Effective percentage of ownership [2]   0.00%
Acquisition cost   ₩ 0
Book value [Abstract]    
Beginning balance ₩ 0 240,591
Acquisition   0
Disposal   0
Dividends received   (10,200)
Share of income (loss)   25,787
Other comprehensive income (loss)   0
Others (book value)   (256,178)
Ending balance   0
Share in net assets   0
Total assets   0
Total liabilities   0
Net assets   0
Investment differential   0
Intercompany transaction   0
Others (consolidated FS)   0
Sales of JointVentures   0
Profit (loss) for the period of JointVentures   ₩ 0
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 29.00% [3] 29.00%
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 290 ₩ 290
Book value [Abstract]    
Beginning balance 571 515
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (25) 56
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 546 571
Share in net assets 546 571
Total assets 2,319 2,993
Total liabilities 435 1,025
Net assets 1,884 1,968
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 4,105 3,323
Profit (loss) for the period of JointVentures ₩ (96) ₩ 134
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 29.00% [3] 29.00%
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 1,856 ₩ 1,856
Book value [Abstract]    
Beginning balance 2,883 2,676
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 13 207
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 2,896 2,883
Share in net assets 2,896 2,883
Total assets 14,801 17,653
Total liabilities 4,816 7,712
Net assets 9,985 9,941
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 2,298 2,991
Profit (loss) for the period of JointVentures ₩ 144 709
Daejung Offshore Wind Power Co., Ltd.    
Book value [Abstract]    
Beginning balance   2,669
Share of income (loss)   (308)
Others (book value)   ₩ (2,361)
Amman Asia Electric Power Company    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location JORDAN JORDAN
Percentage of ownership [1] 60.00% 60.00%
Effective percentage of ownership [2] 60.00% 60.00%
Acquisition cost ₩ 111,476 ₩ 111,476
Book value [Abstract]    
Beginning balance 192,164 177,357
Acquisition 0 0
Disposal 0 0
Dividends received (28,281) 0
Share of income (loss) 20,165 20,648
Other comprehensive income (loss) (22,795) (5,841)
Others (book value) 0 0
Ending balance 161,253 192,164
Share in net assets 161,253 192,164
Total assets 725,101 821,997
Total liabilities 456,346 501,723
Net assets 268,755 320,274
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 20,586 23,866
Profit (loss) for the period of JointVentures ₩ 33,608 ₩ 34,424
KAPES, Inc.    
Disclosure of joint ventures [Line Items]    
Key operation activities R & D R&D
Location KOREA KOREA
Percentage of ownership [1] 51.00% 51.00%
Effective percentage of ownership [2] 51.00% 51.00%
Acquisition cost ₩ 5,629 ₩ 5,629
Book value [Abstract]    
Beginning balance 10,832 9,079
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (10,806) 1,767
Other comprehensive income (loss) 0 0
Others (book value) (26) (14)
Ending balance 0 10,832
Share in net assets 16,369 10,832
Total assets 127,418 124,396
Total liabilities 95,322 103,158
Net assets 32,096 21,238
Investment differential 0 0
Intercompany transaction (19,567) 0
Others (consolidated FS) 3,198 0
Sales of JointVentures 167,201 93,831
Profit (loss) for the period of JointVentures 10,908 ₩ 3,465
Unrecognized equity interest 3,198  
Accumulated unrecognized equity interest 3,198  
Dangjin Eco Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities   Power generation
Location   KOREA
Book value [Abstract]    
Beginning balance ₩ 0 ₩ 19,912
Acquisition   0
Disposal   (5,359)
Dividends received   0
Share of income (loss)   (657)
Other comprehensive income (loss)   16
Others (book value)   (13,912)
Ending balance   0
Share in net assets   0
Total assets   0
Total liabilities   0
Net assets   0
Investment differential   0
Intercompany transaction   0
Others (consolidated FS)   0
Sales of JointVentures   0
Profit (loss) for the period of JointVentures   ₩ 0
Honam Wind Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 29.00% 29.00%
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 3,480 ₩ 3,480
Book value [Abstract]    
Beginning balance 4,375 4,860
Acquisition 0 0
Disposal 0 0
Dividends received (435) (587)
Share of income (loss) (53) 102
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 3,887 4,375
Share in net assets 3,855 4,343
Total assets 36,237 39,680
Total liabilities 22,945 24,703
Net assets 13,292 14,977
Investment differential 32 32
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 4,433 5,365
Profit (loss) for the period of JointVentures ₩ (220) ₩ 354
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied.  
Jeongam Wind Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 40.00% 40.00% [4]
Effective percentage of ownership [2] 40.00% 40.00%
Acquisition cost ₩ 5,580 ₩ 5,580
Book value [Abstract]    
Beginning balance 4,437  
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 183 0
Other comprehensive income (loss) 0 0
Others (book value) 0 4,437
Ending balance 4,620 4,437
Share in net assets 4,620 4,437
Total assets 89,829 94,134
Total liabilities 78,279 83,041
Net assets 11,550 11,093
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 9,757 11,644
Profit (loss) for the period of JointVentures ₩ 412 ₩ 2,005
Shareholders' agreements that may cause future economic resource or cash outflows In the case where non-controlling shareholders decide to dispose of their shares in Jeongam Wind Power Co., Ltd. after the construction of the power plant has been completed, the Company is obligated to acquire those shares at fair value.  
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied and reimbursement to the lender can be restricted depending on the priority of the loans. Also, Shares cannot be wholly or partially transferred without the consent of the stakeholders.  
Korea Power Engineering Service Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Construction and service Construction and service
Location KOREA KOREA
Percentage of ownership 29.00% 29.00% [4]
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 290 ₩ 290
Book value [Abstract]    
Beginning balance 4,902  
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 446 0
Other comprehensive income (loss) 0 0
Others (book value) 14 4,902
Ending balance 5,362 4,902
Share in net assets 5,362 4,902
Total assets 24,162 19,052
Total liabilities 5,674 2,150
Net assets 18,488 16,902
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 9,435 12,284
Profit (loss) for the period of JointVentures ₩ 1,538 ₩ 1,749
Significant restrictions on its abilities Shares cannot be wholly or partially transferred without the consent of the board of directors.  
Chun-cheon Energy Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 29.90% 29.90%
Effective percentage of ownership [2] 29.90% 29.90%
Acquisition cost ₩ 52,700 ₩ 52,700
Book value [Abstract]    
Beginning balance 34,872 [5] 42,505
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (7,354) (7,385)
Other comprehensive income (loss) 0 0
Others (book value) 0 (248)
Ending balance 27,518 34,872 [5]
Share in net assets 27,762 35,117
Total assets 605,493 607,823
Total liabilities 512,642 490,375
Net assets 92,851 117,448
Investment differential 3 0
Intercompany transaction 0 0
Others (consolidated FS) (247) (245)
Sales of JointVentures 222,066 313,438
Profit (loss) for the period of JointVentures ₩ (24,597) ₩ (24,490)
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, principals and interests on subordinated loans shall not be paid until the collateralized debt is fully repaid.  
Yeonggwangbaeksu Wind Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership [3] 15.00% 15.00%
Effective percentage of ownership [2] 15.00% 15.00%
Acquisition cost ₩ 3,000 ₩ 3,000
Book value [Abstract]    
Beginning balance 3,040 2,843
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 84 197
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 3,124 3,040
Share in net assets 3,119 3,035
Total assets 90,758 99,552
Total liabilities 69,967 79,322
Net assets 20,791 20,230
Investment differential 5 5
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 11,232 11,739
Profit (loss) for the period of JointVentures ₩ 572 ₩ 1,342
Significant restrictions on its abilities Dividends and settlement amount for renewable energy supply certificate can only be paid when all conditions of the loan agreement are satisfied and prior written consent of financial institutions is obtained. Also, principals and interests on subordinated loans can only be paid when written consent of financial institutions is obtained.  
Nghi Son 2 Power LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location VIETNAM VIETNAM
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 2,781 ₩ 2,781
Book value [Abstract]    
Beginning balance 0 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 0
Share in net assets (133,280) (102,825)
Total assets 2,207,764 1,589,928
Total liabilities 2,474,324 1,795,578
Net assets (266,560) (205,650)
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 133,280 102,825
Sales of JointVentures 819,706 1,008,326
Profit (loss) for the period of JointVentures 108,832 71,803
Unrecognized equity interest 30,456 61,165
Accumulated unrecognized equity interest ₩ 133,280 ₩ 102,824
Kelar S.A    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership [1] 65.00% 65.00%
Effective percentage of ownership [2] 65.00% 65.00%
Acquisition cost ₩ 78,060 ₩ 78,060
Book value [Abstract]    
Beginning balance 70,462 72,824
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 14,864 3,435
Other comprehensive income (loss) (9,186) (8,416)
Others (book value) (4,691) 2,619
Ending balance 71,449 70,462
Share in net assets 68,941 67,794
Total assets 598,901 634,633
Total liabilities 492,838 530,335
Net assets 106,063 104,298
Investment differential 2,508 2,668
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 93,375 86,702
Profit (loss) for the period of JointVentures ₩ 16,863 ₩ 8,867
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, shares cannot be wholly or partially transferred without the consent of the stakeholders. Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, Shares cannot be wholly or partially transferred without consent of the stakeholders is obtained
PT. Tanjung Power Indonesia    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location INDONESIA INDONESIA
Percentage of ownership 35.00% 35.00%
Effective percentage of ownership [2] 35.00% 35.00%
Acquisition cost ₩ 26,892 ₩ 26,892
Book value [Abstract]    
Beginning balance 34,327 7,081
Acquisition 0 26,146
Disposal 0 0
Dividends received 0 0
Share of income (loss) 7,522 5,601
Other comprehensive income (loss) (9,220) (4,489)
Others (book value) 434 (12)
Ending balance 33,063 34,327
Share in net assets 33,063 34,327
Total assets 645,152 654,365
Total liabilities 550,687 556,287
Net assets 94,465 98,078
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 90,255 109,825
Profit (loss) for the period of JointVentures ₩ 20,487 ₩ 16,489
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied.  
Incheon New Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership [6] 29.00% 29.00%
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 461 ₩ 461
Book value [Abstract]    
Beginning balance 0 [7] 579
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 0 (232)
Other comprehensive income (loss) 0 0
Others (book value) 0 (347)
Ending balance 0 0 [7]
Share in net assets 152 347
Total assets 3,439 4,749
Total liabilities 2,914 3,553
Net assets 525 1,196
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) (152) (347)
Sales of JointVentures 1,519 1,951
Profit (loss) for the period of JointVentures (670) ₩ (800)
Unrecognized equity interest 194  
Accumulated unrecognized equity interest ₩ 194  
Seokmun Energy Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 29.00% 29.00%
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 15,370 ₩ 15,370
Book value [Abstract]    
Beginning balance 17,342 16,751
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (2,528) 591
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 14,814 17,342
Share in net assets 14,814 17,342
Total assets 227,539 242,332
Total liabilities 176,457 182,533
Net assets 51,082 59,799
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 33,677 44,733
Profit (loss) for the period of JointVentures ₩ (8,734) ₩ 2,606
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied and prior written consent of financial institutions is obtained. Also, principals and interests on subordinated loans can only be paid when written consent of financial institutions is obtained.  
Daehan Wind Power PSC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location JORDAN JORDAN
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 7,493 ₩ 3,191
Book value [Abstract]    
Beginning balance 1,757 1,632
Acquisition 4,302 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (626) 66
Other comprehensive income (loss) (5,433) 59
Others (book value) 0 0
Ending balance 0 1,757
Share in net assets (3,855) 1,757
Total assets 98,544 89,904
Total liabilities 106,254 86,390
Net assets (7,710) 3,514
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 3,855 0
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures (765) (767)
Unrecognized equity interest 3,855 0
Accumulated unrecognized equity interest ₩ 3,855 ₩ 0
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, Shares cannot be wholly or partially transferred without the consent of the stakeholders. Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, Shares cannot be wholly or partially transferred without consent of the stakeholders is obtained.
Barakah One Company    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location UAE UAE
Percentage of ownership 18.00% [8] 18.00% [9]
Effective percentage of ownership [2] 18.00% 18.00%
Acquisition cost ₩ 118 ₩ 118
Book value [Abstract]    
Beginning balance 0 3,807
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 0 (2,668)
Other comprehensive income (loss) 0 (1,139)
Others (book value) 0 0
Ending balance 0 0
Share in net assets (41,493) (38,842)
Total assets 24,693,571 24,330,632
Total liabilities 24,924,087 24,546,421
Net assets (230,516) (215,789)
Investment differential 0 0
Intercompany transaction (27,845) (77,254)
Others (consolidated FS) 69,338 116,096
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures (4,520) (112,114)
Unrecognized equity interest (46,758) 116,096
Accumulated unrecognized equity interest ₩ 69,338 ₩ 116,096
Nawah Energy Company    
Disclosure of joint ventures [Line Items]    
Key operation activities Operation of utility plant Operation of utility plant
Location UAE UAE
Percentage of ownership 18.00% [8] 18.00% [9]
Effective percentage of ownership [2] 18.00% 18.00%
Acquisition cost ₩ 296 ₩ 296
Book value [Abstract]    
Beginning balance 285 274
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 2 0
Other comprehensive income (loss) (17) 11
Others (book value) 0 0
Ending balance 270 285
Share in net assets 270 285
Total assets 139,286 120,987
Total liabilities 137,788 119,405
Net assets 1,498 1,582
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 ₩ 12 ₩ 3
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 33.33% 33.33%
Effective percentage of ownership [2] 33.33% 33.33%
Acquisition cost ₩ 1 ₩ 1
Book value [Abstract]    
Beginning balance 553 582
Acquisition 0 0
Disposal 0 0
Dividends received (404) (411)
Share of income (loss) 399 380
Other comprehensive income (loss) 17 2
Others (book value) 0 0
Ending balance 565 553
Share in net assets 565 553
Total assets 10,772 8,904
Total liabilities 9,076 7,245
Net assets 1,696 1,659
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 31,161 21,171
Profit (loss) for the period of JointVentures ₩ 1,122 ₩ 1,099
Daegu Green Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership [10] 29.00% 29.00%
Effective percentage of ownership [2] 54.24% 54.24%
Acquisition cost ₩ 46,225 ₩ 46,225
Book value [Abstract]    
Beginning balance 22,824 [11] 41,110
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 128 3,599
Other comprehensive income (loss) 0 0
Others (book value) 93 (21,885)
Ending balance 23,045 22,824 [11]
Share in net assets 43,342 43,124
Total assets 549,034 579,593
Total liabilities 469,126 500,092
Net assets 79,908 79,501
Investment differential 84 84
Intercompany transaction 0 0
Others (consolidated FS) (20,381) (20,384)
Sales of JointVentures 221,382 301,339
Profit (loss) for the period of JointVentures ₩ 290 ₩ 4,899
Shareholders' agreements that may cause future economic resource or cash outflows The Company has a right to purchase all the shares of Daegu Green Power Co., Ltd. held by the financial investors at the yield-based transfer amount agreed with the shareholders. The Company can exercise its right 5, 10 and 13 years after the date of the investment. The Company has a right to purchase all or part of the shares of Daegu Green Power Co., Ltd. held by Lotte Engineering & Construction Co. at the yield-based transfer amount agreed with the shareholders. The Group has a right to purchase all the shares of Daegu Green Power Co., Ltd. held by the financial investores at the yield-based transfer amount agreed with the shareholders.The Group can exercise its right 5, 10 and 13 years after the date of the investment. The Group has a right to purchase all or part of the shares of Daegu Green Power Co., Ltd. held by Lotte Engineering & Construction Co. at the yield-based transfer amount agreed with the shareholders
Significant restrictions on its abilities 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. 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 46.00% 46.00%
Effective percentage of ownership [2] 46.00% 46.00%
Acquisition cost ₩ 17,475 ₩ 17,475
Book value [Abstract]    
Beginning balance 17,627 15,304
Acquisition 0 2,100
Disposal 0 0
Dividends received 0 0
Share of income (loss) (371) 223
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 17,256 17,627
Share in net assets 16,764 17,135
Total assets 249,999 262,610
Total liabilities 213,556 225,361
Net assets 36,443 37,249
Investment differential 492 492
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 26,535 24,256
Profit (loss) for the period of JointVentures ₩ 1,690 ₩ (2,032)
Shareholders' agreements that may cause future economic resource or cash outflows In case the Company intends to purchase all or part of the shares from Daehan Green Energy Co., Ltd., which is a non-controlling shareholder, Daehan Green Energy Co., Ltd. has an obligation to evaluate the shares at fair value and transfer them to the Company. In case the Group intends to purchase all or part of the shares from Daehan Green Energy Co., Ltd., which is a non-controlling shareholder, Daehan Green Energy Co., Ltd. has an obligation to evaluate the shares at fair value and transfer them to the Group.
Significant restrictions on its abilities Dividends and settlement amount for renewable energy supply certificate can only be paid when all conditions of the loan agreement are satisfied and prior written consent of financial institutions is obtained.  
Chester Solar IV SpA    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership 45.00% 45.00%
Effective percentage of ownership [2] 45.00% 45.00%
Acquisition cost ₩ 1,700 ₩ 1,700
Book value [Abstract]    
Beginning balance 672 1,851
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 389 (1,746)
Other comprehensive income (loss) 80 (55)
Others (book value) (77) 622
Ending balance 1,064 672
Share in net assets 1,009 614
Total assets 14,232 13,443
Total liabilities 11,990 12,079
Net assets 2,242 1,364
Investment differential 55 58
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 1,688 1,590
Profit (loss) for the period of JointVentures ₩ 485 ₩ (1,057)
Shareholders' agreements that may cause future economic resource or cash outflows According to the shareholders' agreement, the Company has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise and when Sprott Chile Solar I SpA intends to sell its shares. According to the shareholders' agreement, the Group has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise.According to the shareholders' agreement, when Sprott Chile SolarISpA intends to sell its shares
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, shares cannot be wholly or partially transferred without the consent of the stakeholders. Shares cannot be wholly or partially transferred without consent of the stakeholders is obtained.
Chester Solar V SpA    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership 45.00% 45.00%
Effective percentage of ownership [2] 45.00% 45.00%
Acquisition cost ₩ 525 ₩ 525
Book value [Abstract]    
Beginning balance 146 474
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 135 (619)
Other comprehensive income (loss) 17 (6)
Others (book value) (21) 297
Ending balance 277 146
Share in net assets 162 23
Total assets 4,674 4,677
Total liabilities 4,313 4,625
Net assets 361 52
Investment differential 115 123
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 588 519
Profit (loss) for the period of JointVentures ₩ 150 ₩ (402)
Shareholders' agreements that may cause future economic resource or cash outflows According to the shareholders' agreement, the Company has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise and when Sprott Chile Solar I SpA intends to sell its shares. According to the shareholders' agreement, the Group has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise.According to the shareholders' agreement, when Sprott Chile SolarISpA intends to sell its shares.
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, shares cannot be wholly or partially transferred without the consent of the stakeholders. Shares cannot be wholly or partially transferred without consent of the stakeholders is obtained
Diego de Almagro Solar SpA    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership 45.00% 45.00%
Effective percentage of ownership [2] 45.00% 45.00%
Acquisition cost ₩ 2,091 ₩ 2,091
Book value [Abstract]    
Beginning balance 1,035 1,663
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 455 (1,014)
Other comprehensive income (loss) 107 (86)
Others (book value) (107) 472
Ending balance 1,490 1,035
Share in net assets 1,399 937
Total assets 17,916 18,984
Total liabilities 14,808 16,901
Net assets 3,108 2,083
Investment differential 91 98
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 1,824 1,954
Profit (loss) for the period of JointVentures ₩ 535 ₩ (1,104)
Shareholders' agreements that may cause future economic resource or cash outflows According to the shareholders' agreement, the Company has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise and when Sprott Chile Solar I SpA intends to sell its shares. According to the shareholders' agreement, the Group has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise.According to the shareholders' agreement, when Sprott Chile SolarISpA intends to sell its shares.
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, shares cannot be wholly or partially transferred without the consent of the stakeholders. Shares cannot be wholly or partially transferred without consent of the stakeholders is obtained.
South Jamaica Power Company Limited    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location JAMAICA JAMAICA
Percentage of ownership 20.00% 20.00%
Effective percentage of ownership [2] 20.00% 20.00%
Acquisition cost ₩ 20,521 ₩ 20,521
Book value [Abstract]    
Beginning balance 13,863 16,124
Acquisition 0 4,290
Disposal 0 0
Dividends received 0 0
Share of income (loss) 20,468 (7,131)
Other comprehensive income (loss) (2,432) 580
Others (book value) (2) 0
Ending balance 31,897 13,863
Share in net assets 31,899 13,863
Total assets 405,804 364,347
Total liabilities 246,310 295,029
Net assets 159,494 69,318
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) (2) 0
Sales of JointVentures 209,596 7,224
Profit (loss) for the period of JointVentures ₩ 12,208 ₩ (35,650)
Daesan Green Energy Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 35.00% 35.00%
Effective percentage of ownership [2] 35.00% 35.00%
Acquisition cost ₩ 17,850 ₩ 17,850
Book value [Abstract]    
Beginning balance 17,182 17,433
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 5,371 (251)
Other comprehensive income (loss) 0 0
Others (book value) (1) 0
Ending balance 22,552 17,182
Share in net assets 22,552 17,182
Total assets 275,911 232,170
Total liabilities 211,476 183,079
Net assets 64,435 49,091
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 62,286 0
Profit (loss) for the period of JointVentures ₩ 15,346 ₩ (717)
Significant restrictions on its abilities Dividends and settlement amount for renewable energy supply certificate can only be paid when all conditions of the loan agreement are satisfied and prior written consent of financial institutions is obtained.  
RE Holiday Holdings LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location USA USA
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 42,948 ₩ 42,948
Book value [Abstract]    
Beginning balance 42,070 51,094
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 33,072 (6,525)
Other comprehensive income (loss) (6,333) (2,500)
Others (book value) 0 1
Ending balance 68,809 42,070
Share in net assets 68,809 42,070
Total assets 320,908 331,862
Total liabilities 183,290 247,722
Net assets 137,618 84,140
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 19,659 18,744
Profit (loss) for the period of JointVentures ₩ 13,247 ₩ (345)
RE Pioneer Holdings LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location USA USA
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 27,891 ₩ 27,891
Book value [Abstract]    
Beginning balance 31,156 38,898
Acquisition 0 0
Disposal 0 0
Dividends received (1,246) (939)
Share of income (loss) 24,466 (5,507)
Other comprehensive income (loss) (4,737) (1,296)
Others (book value) 0 0
Ending balance 49,639 31,156
Share in net assets 49,639 31,156
Total assets 236,565 246,571
Total liabilities 137,287 184,258
Net assets 99,278 62,313
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 12,410 12,207
Profit (loss) for the period of JointVentures ₩ 8,821 ₩ (1,912)
RE Barren Ridge 1 Holdings LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location USA USA
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 28,021 ₩ 28,021
Book value [Abstract]    
Beginning balance 42,916 41,415
Acquisition 0 0
Disposal 0 0
Dividends received (872) (1,152)
Share of income (loss) (35,735) 4,609
Other comprehensive income (loss) (1,843) (1,957)
Others (book value) 0 1
Ending balance 4,466 42,916
Share in net assets 53,736 42,916
Total assets 194,643 209,850
Total liabilities 87,171 124,017
Net assets 107,472 85,833
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) (49,270) 0
Sales of JointVentures 10,679 10,384
Profit (loss) for the period of JointVentures ₩ (722) ₩ 7,630
RE Astoria 2 LandCo LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location USA USA
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 5,188 ₩ 5,188
Book value [Abstract]    
Beginning balance 5,602 5,410
Acquisition 0 0
Disposal 0 0
Dividends received (249) (430)
Share of income (loss) 210 430
Other comprehensive income (loss) (333) 192
Others (book value) 0 0
Ending balance 5,230 5,602
Share in net assets 5,230 5,602
Total assets 10,733 11,422
Total liabilities 274 217
Net assets 10,459 11,205
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 664 656
Profit (loss) for the period of JointVentures ₩ 541 ₩ 651
RE Barren Ridge LandCo LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location USA USA
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 2,187 ₩ 2,187
Book value [Abstract]    
Beginning balance 1,966 1,898
Acquisition 0 0
Disposal 0 0
Dividends received (95) (194)
Share of income (loss) 95 172
Other comprehensive income (loss) (119) 90
Others (book value) 0 0
Ending balance 1,847 1,966
Share in net assets 1,847 1,966
Total assets 3,776 4,019
Total liabilities 82 87
Net assets 3,694 3,932
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 266 262
Profit (loss) for the period of JointVentures ₩ 223 ₩ 260
Laurel SpA    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership 45.00% 45.00%
Effective percentage of ownership [2] 45.00% 45.00%
Acquisition cost ₩ 1,222 ₩ 1,222
Book value [Abstract]    
Beginning balance 595 921
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 498 (665)
Other comprehensive income (loss) 80 (82)
Others (book value) (81) 421
Ending balance 1,092 595
Share in net assets 915 406
Total assets 13,529 12,979
Total liabilities 11,496 12,076
Net assets 2,033 903
Investment differential 177 189
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 1,704 961
Profit (loss) for the period of JointVentures ₩ 702 ₩ (1,130)
Shareholders' agreements that may cause future economic resource or cash outflows According to the shareholders' agreement, the Company has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise and when Sprott Chile Solar I SpA intends to sell its shares. According to the shareholders' agreement, the Group has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise.According to the shareholders' agreement, when Sprott Chile SolarISpA intends to sell its shares
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied. Also, shares cannot be wholly or partially transferred without the consent of the stakeholders. Shares cannot be wholly or partially transferred without consent of the stakeholders is obtained.
KIAMCO KOWEPO Bannerton Hold Co Pty Ltd    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location AUSTRALIA AUSTRALIA
Percentage of ownership [3] 12.37% 12.37%
Effective percentage of ownership [2] 12.37% 12.37%
Acquisition cost ₩ 4,095 ₩ 4,095
Book value [Abstract]    
Beginning balance 4,024 3,940
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) (24) (28)
Other comprehensive income (loss) 129 112
Others (book value) 0 0
Ending balance 4,129 4,024
Share in net assets 4,121 4,015
Total assets 33,930 32,883
Total liabilities 618 425
Net assets 33,312 32,458
Investment differential 8 9
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures ₩ (191) ₩ (232)
Chile Solar JV SpA    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership 50.00% 50.00%
Effective percentage of ownership [2] 50.00% 50.00%
Acquisition cost ₩ 37,689 ₩ 37,689
Book value [Abstract]    
Beginning balance 34,859 36,865
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 187 842
Other comprehensive income (loss) (163) (2,849)
Others (book value) 0 1
Ending balance 34,883 34,859
Share in net assets 34,883 34,859
Total assets 74,776 69,903
Total liabilities 5,011 186
Net assets 69,765 69,717
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 4,390 591
Profit (loss) for the period of JointVentures ₩ 1,476 ₩ 1,686
Taebaek Gadeoksan Wind Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 47.31% 37.78%
Effective percentage of ownership [2] 47.31% 37.78%
Acquisition cost ₩ 12,570 ₩ 8,500
Book value [Abstract]    
Beginning balance 7,846 8,508
Acquisition 4,070 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 1,468 (651)
Other comprehensive income (loss) (22) (9)
Others (book value) 0 (2)
Ending balance 13,362 7,846
Share in net assets 13,362 7,846
Total assets 142,731 70,270
Total liabilities 114,487 49,500
Net assets 28,244 20,770
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 10,587 0
Profit (loss) for the period of JointVentures ₩ 2,411 ₩ (1,602)
Significant restrictions on its abilities Dividends and settlement amount for renewable energy supply certificate can only be paid when all conditions of the loan agreement are satisfied or prior written consent of financial institutions is obtained. Also, principals and interests on subordinated loans can only be paid when written consent of financial institutions is obtained.  
Cheong-Song Noraesan Wind Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 29.01% 29.01%
Effective percentage of ownership [2] 29.01% 29.01%
Acquisition cost ₩ 3,200 ₩ 3,200
Book value [Abstract]    
Beginning balance 3,043 2,073
Acquisition 0 1,127
Disposal 0 0
Dividends received 0 0
Share of income (loss) 409 (153)
Other comprehensive income (loss) 0 (4)
Others (book value) 1 0
Ending balance 3,453 3,043
Share in net assets 3,391 2,982
Total assets 55,460 51,247
Total liabilities 43,771 40,969
Net assets 11,689 10,278
Investment differential 61 61
Intercompany transaction 0 0
Others (consolidated FS) 1 0
Sales of JointVentures 7,411 0
Profit (loss) for the period of JointVentures ₩ 2,039 ₩ (549)
Chester Solar I SpA    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership 45.00% 45.00%
Effective percentage of ownership [2] 45.00% 45.00%
Acquisition cost ₩ 1,181 ₩ 1,181
Book value [Abstract]    
Beginning balance 1,157 1,181
Acquisition 0 0
Disposal 0 0
Dividends received 0 0
Share of income (loss) 472 (112)
Other comprehensive income (loss) 107 (79)
Others (book value) (115) 167
Ending balance 1,621 1,157
Share in net assets 1,387 908
Total assets 12,795 7,859
Total liabilities 9,713 5,842
Net assets 3,082 2,017
Investment differential 234 249
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 1,111 0
Profit (loss) for the period of JointVentures ₩ 824 ₩ (204)
Shareholders' agreements that may cause future economic resource or cash outflows According to the shareholders' agreement, the Company has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise and when Sprott Chile Solar I SpA intends to sell its shares. According to the shareholders' agreement, the Group has an obligation to purchase the shares at the agreed yield-based transfer price on the agreed date of exercise.According to the shareholders' agreement, when Sprott Chile SolarISpA intends to sell its shares.
Solar Philippines Calatagan Corporation    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location PHILIPPINES PHILIPPINES
Percentage of ownership 38.00% 38.00%
Effective percentage of ownership [2] 38.00% 38.00%
Acquisition cost ₩ 47,903 ₩ 47,903
Book value [Abstract]    
Beginning balance 48,930 47,903
Acquisition 0 0
Disposal 0 0
Dividends received (6,439) (4,633)
Share of income (loss) 6,745 4,305
Other comprehensive income (loss) (219) 1,355
Others (book value) 0 0
Ending balance 49,017 48,930
Share in net assets 19,323 19,236
Total assets 97,947 98,577
Total liabilities 47,098 47,956
Net assets 50,849 50,621
Investment differential 29,694 29,694
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 23,182 18,720
Profit (loss) for the period of JointVentures ₩ 15,249 ₩ 11,331
Saemangeum Solar Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 81.00% [12] 81.00% [13]
Effective percentage of ownership [2] 81.00% 81.00%
Acquisition cost ₩ 26,399 ₩ 10,000
Book value [Abstract]    
Beginning balance 8,324  
Acquisition 16,399 10,000
Disposal 0 0
Dividends received 0 0
Share of income (loss) (431) (1,676)
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 24,292 8,324
Share in net assets 24,450 8,481
Total assets 34,363 13,740
Total liabilities 4,180 3,270
Net assets 30,183 10,470
Investment differential (158) 0
Intercompany transaction 0 0
Others (consolidated FS) 0 (157)
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures ₩ (532) ₩ (1,875)
Chungsongmeon BongSan wind power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 29.00% [3] 29.00%
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 2,900 ₩ 2,900
Book value [Abstract]    
Beginning balance 2,764  
Acquisition 0 2,900
Disposal 0 0
Dividends received 0 0
Share of income (loss) (232) (136)
Other comprehensive income (loss) 1,592 0
Others (book value) 0 0
Ending balance 4,124 2,764
Share in net assets 2,342 982
Total assets 64,341 27,659
Total liabilities 56,264 24,272
Net assets 8,077 3,387
Investment differential 1,782 1,782
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures ₩ (1,206) ₩ (1,365)
Jaeun Resident Wind Power Plant Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 29.00% [3] 29.00%
Effective percentage of ownership [2] 29.00% 29.00%
Acquisition cost ₩ 2,494 ₩ 2,494
Book value [Abstract]    
Beginning balance 2,198  
Acquisition 0 2,494
Disposal 0 0
Dividends received 0 0
Share of income (loss) (3) (296)
Other comprehensive income (loss) 0 0
Others (book value) 0 0
Ending balance 2,195 2,198
Share in net assets 2,195 2,198
Total assets 63,940 31,402
Total liabilities 56,371 23,823
Net assets 7,569 7,579
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 ₩ (645) ₩ (844)
DE Energia SpA    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location CHILE CHILE
Percentage of ownership 49.00% 49.00%
Effective percentage of ownership [2] 49.00% 49.00%
Acquisition cost ₩ 8,364 ₩ 8,364
Book value [Abstract]    
Beginning balance 8,665  
Acquisition 0 8,364
Disposal 0 0
Dividends received 0 0
Share of income (loss) 506 647
Other comprehensive income (loss) 572 (346)
Others (book value) (1,556) 0
Ending balance 8,187 8,665
Share in net assets (3,237) 6,854
Total assets 48,327 64,959
Total liabilities 54,934 50,971
Net assets (6,607) 13,988
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 11,424 1,811
Sales of JointVentures 3,789 1,254
Profit (loss) for the period of JointVentures ₩ (21,087) ₩ (2,645)
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied.  
Dangjin Eco Power Co., Ltd. (newly)    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 34.00% 34.00% [14]
Effective percentage of ownership [2] 34.00% 34.00%
Acquisition cost ₩ 25,661 ₩ 25,661
Book value [Abstract]    
Beginning balance 25,661  
Acquisition 0 9,180
Disposal 0 0
Dividends received 0 0
Share of income (loss) 96 0
Other comprehensive income (loss) (237) 0
Others (book value) 3 16,481
Ending balance 25,523 25,661
Share in net assets 25,182 25,320
Total assets 97,834 99,907
Total liabilities 23,769 25,436
Net assets 74,065 74,471
Investment differential 341 341
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 3,953 107
Profit (loss) for the period of JointVentures ₩ 565 ₩ (737)
Haemodum Solar Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 49.00% 49.00%
Effective percentage of ownership [2] 49.00% 49.00%
Acquisition cost ₩ 2,940 ₩ 2,940
Book value [Abstract]    
Beginning balance 2,940  
Acquisition 0 2,940
Disposal 0 0
Dividends received 0 0
Share of income (loss) 140 0
Other comprehensive income (loss) (15) 0
Others (book value) 0 0
Ending balance 3,065 2,940
Share in net assets 3,065 2,940
Total assets 19,041 7,237
Total liabilities 12,786 1,237
Net assets 6,255 6,000
Investment differential 0 0
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 1,188 0
Profit (loss) for the period of JointVentures ₩ 286 ₩ 0
Yangyang Wind Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation Power generation
Location KOREA KOREA
Percentage of ownership 50.00% 99.54% [15]
Effective percentage of ownership [2] 50.00% 99.54%
Acquisition cost ₩ 10,800 ₩ 10,800
Book value [Abstract]    
Beginning balance 10,800  
Acquisition 0 10,800
Disposal 0 0
Dividends received 0 0
Share of income (loss) (286) 0
Other comprehensive income (loss) (29) 0
Others (book value) 0 0
Ending balance 10,485 10,800
Share in net assets 10,442 10,714
Total assets 20,917 10,764
Total liabilities 33 0
Net assets 20,884 10,764
Investment differential 43 86
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures ₩ (572) ₩ (11)
HORUS SOLAR, S.A. DE C.V.    
Disclosure of joint ventures [Line Items]    
Key operation activities Renewable power generation Renewable power generation
Location MEXICO MEXICO
Percentage of ownership 14.95% [16] 14.95% [17]
Effective percentage of ownership [2] 14.95% 14.95%
Acquisition cost ₩ 5,068 ₩ 3,403
Book value [Abstract]    
Beginning balance 3,403  
Acquisition 1,665 3,403
Disposal 0 0
Dividends received 0 0
Share of income (loss) (1,985) 0
Other comprehensive income (loss) 311 0
Others (book value) 0 0
Ending balance 3,394 3,403
Share in net assets (186) 308
Total assets 181,432 10,566
Total liabilities 182,674 8,503
Net assets (1,242) 2,063
Investment differential 3,580 3,095
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures ₩ (13,285) ₩ (7)
RECURSOS SOLARES PV DE MEXICO II, S.S. DE C.V.    
Disclosure of joint ventures [Line Items]    
Key operation activities Renewable power generation Renewable power generation
Location MEXICO MEXICO
Percentage of ownership 14.95% [16] 14.95% [17]
Effective percentage of ownership [2] 14.95% 14.95%
Acquisition cost ₩ 3,678 ₩ 672
Book value [Abstract]    
Beginning balance 672  
Acquisition 3,006 672
Disposal 0 0
Dividends received 0 0
Share of income (loss) 36 0
Other comprehensive income (loss) (54) 0
Others (book value) 0 0
Ending balance 3,660 672
Share in net assets 1,489 144
Total assets 81,257 3,848
Total liabilities 71,295 2,885
Net assets 9,962 963
Investment differential 2,171 528
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures ₩ 243 ₩ 22
SUNMEX RENOVABLES, S.A. DE C.V.    
Disclosure of joint ventures [Line Items]    
Key operation activities Renewable power generation Renewable power generation
Location MEXICO MEXICO
Percentage of ownership 14.95% [16] 14.95% [17]
Effective percentage of ownership [2] 14.95% 14.95%
Acquisition cost ₩ 307 ₩ 222
Book value [Abstract]    
Beginning balance 222  
Acquisition 85 222
Disposal 0 0
Dividends received 0 0
Share of income (loss) (46) 0
Other comprehensive income (loss) (21) 0
Others (book value) 0 0
Ending balance 240 222
Share in net assets 236 149
Total assets 7,781 3,170
Total liabilities 6,204 2,171
Net assets 1,577 999
Investment differential 4 73
Intercompany transaction 0 0
Others (consolidated FS) 0 0
Sales of JointVentures 0 0
Profit (loss) for the period of JointVentures ₩ (309) ₩ 13
Stavro Holding II AB    
Disclosure of joint ventures [Line Items]    
Key operation activities Holding company Holding company
Location SWEDEN SWEDEN
Percentage of ownership 20.00% 20.00%
Effective percentage of ownership [2] 20.00% 20.00%
Acquisition cost ₩ 8,829 ₩ 5,524
Book value [Abstract]    
Beginning balance 5,625  
Acquisition 3,305 5,524
Disposal 0 0
Dividends received 0 0
Share of income (loss) (156) (4)
Other comprehensive income (loss) 346 122
Others (book value) 157 (17)
Ending balance 9,277 5,625
Share in net assets 9,277 5,625
Total assets 46,394 28,141
Total liabilities 9 13
Net assets 46,385 28,128
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 ₩ (782) ₩ (18)
Solaseado Solar Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership 38.90%  
Effective percentage of ownership [2] 38.90%  
Acquisition cost ₩ 7,020  
Book value [Abstract]    
Acquisition 7,020  
Disposal 0  
Dividends received 0  
Share of income (loss) 2,895  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 9,915  
Share in net assets 8,554  
Total assets 349,855  
Total liabilities 327,865  
Net assets 21,990  
Investment differential 1,361  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 43,782  
Profit (loss) for the period of JointVentures ₩ 7,443  
Yeongam Solar Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership [3] 19.00%  
Effective percentage of ownership [2] 19.00%  
Acquisition cost ₩ 6,460  
Book value [Abstract]    
Acquisition 6,460  
Disposal 0  
Dividends received 0  
Share of income (loss) (418)  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 6,042  
Share in net assets 5,269  
Total assets 312,960  
Total liabilities 285,231  
Net assets 27,729  
Investment differential 773  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 17,347  
Profit (loss) for the period of JointVentures ₩ (3,324)  
Samsu Wind Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership [3] 19.00%  
Effective percentage of ownership [2] 19.00%  
Acquisition cost ₩ 2,637  
Book value [Abstract]    
Acquisition 2,637  
Disposal 0  
Dividends received 0  
Share of income (loss) (30)  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 2,607  
Share in net assets 2,607  
Total assets 59,597  
Total liabilities 45,877  
Net assets 13,720  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ 243  
Pulau Indah Power Plant Sdn. Bhd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location MALAYSIA  
Percentage of ownership 25.00%  
Effective percentage of ownership [2] 25.00%  
Acquisition cost ₩ 11,569  
Book value [Abstract]    
Acquisition 11,569  
Disposal 0  
Dividends received 0  
Share of income (loss) (144)  
Other comprehensive income (loss) (221)  
Others (book value) 0  
Ending balance 11,204  
Share in net assets 5,561  
Total assets 31,538  
Total liabilities 9,293  
Net assets 22,245  
Investment differential 5,643  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ (894)  
Sam-Yang Photovoltaic Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership 49.00%  
Effective percentage of ownership [2] 49.00%  
Acquisition cost ₩ 5,245  
Book value [Abstract]    
Acquisition 5,245  
Disposal 0  
Dividends received 0  
Share of income (loss) 290  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 5,535  
Share in net assets 5,535  
Total assets 55,345  
Total liabilities 44,049  
Net assets 11,296  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 2,769  
Profit (loss) for the period of JointVentures ₩ 592  
NH-Amundi Global Infrastructure Investment Private Investment Trust 21    
Disclosure of joint ventures [Line Items]    
Key operation activities Holding company  
Location KOREA  
Percentage of ownership 29.53%  
Effective percentage of ownership [2] 29.53%  
Acquisition cost ₩ 20,952  
Book value [Abstract]    
Acquisition 20,952  
Disposal 0  
Dividends received (1,388)  
Share of income (loss) 2,678  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 22,242  
Share in net assets 21,715  
Total assets 73,573  
Total liabilities 39  
Net assets 73,534  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 527  
Sales of JointVentures 1,770  
Profit (loss) for the period of JointVentures ₩ 8,989  
Shin-han BNPP Private Investment Trust for East-West Sunlight Dream    
Disclosure of joint ventures [Line Items]    
Key operation activities Holding company  
Location KOREA  
Percentage of ownership 90.00%  
Effective percentage of ownership [2] 90.00%  
Acquisition cost ₩ 15,699  
Book value [Abstract]    
Acquisition 15,699  
Disposal 0  
Dividends received 0  
Share of income (loss) 430  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 16,129  
Share in net assets 16,129  
Total assets 17,932  
Total liabilities 11  
Net assets 17,921  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 6  
Profit (loss) for the period of JointVentures ₩ 478  
PT Barito Wahana Tenaga    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location INDONESIA  
Percentage of ownership 30.61%  
Effective percentage of ownership [2] 30.61%  
Acquisition cost ₩ 59,395  
Book value [Abstract]    
Acquisition 59,395  
Disposal 0  
Dividends received 0  
Share of income (loss) 4,923  
Other comprehensive income (loss) (1,289)  
Others (book value) 0  
Ending balance 63,029  
Share in net assets 63,029  
Total assets 205,894  
Total liabilities 0  
Net assets 205,894  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ 28,631  
Cheongna Energy Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Generating and distributing vapor and hot/cold water  
Location KOREA  
Percentage of ownership [12],[18] 50.10%  
Effective percentage of ownership [2] 50.10%  
Acquisition cost ₩ 49,344  
Book value [Abstract]    
Acquisition 0  
Disposal 0  
Dividends received 0  
Share of income (loss) 21  
Other comprehensive income (loss) 0  
Others (book value) 4,919  
Ending balance 4,940  
Share in net assets 2,877  
Total assets 341,478  
Total liabilities 335,736  
Net assets 5,742  
Investment differential 3,137  
Intercompany transaction (1,074)  
Others (consolidated FS) 0  
Sales of JointVentures 78,387  
Profit (loss) for the period of JointVentures ₩ 5,995  
Naepo Green Energy Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership [19] 29.20%  
Effective percentage of ownership [2] 29.20%  
Acquisition cost ₩ 29,200  
Book value [Abstract]    
Acquisition 0  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 0  
Share in net assets (2,278)  
Total assets 152,003  
Total liabilities 159,805  
Net assets (7,802)  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 2,278  
Sales of JointVentures 7,056  
Profit (loss) for the period of JointVentures ₩ (28,043)  
DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.)    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership [20] 30.66%  
Effective percentage of ownership [2] 46.30%  
Acquisition cost ₩ 71,070  
Book value [Abstract]    
Acquisition 0  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 0  
Share in net assets (25,224)  
Total assets 441,875  
Total liabilities 496,355  
Net assets (54,480)  
Investment differential 0  
Intercompany transaction (923)  
Others (consolidated FS) 26,147  
Sales of JointVentures 93,832  
Profit (loss) for the period of JointVentures ₩ 30,269  
OneEnergy Asia Limited    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location VIETNAM  
Percentage of ownership 40.00%  
Effective percentage of ownership [2] 40.00%  
Acquisition cost ₩ 56,654  
Book value [Abstract]    
Acquisition 56,654  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 56,654  
Share in net assets 31,142  
Total assets 78,005  
Total liabilities 150  
Net assets 77,855  
Investment differential 25,512  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ (578)  
KAS INVESTMENT I LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Holding company  
Location USA  
Percentage of ownership [21] 29.89%  
Effective percentage of ownership [2] 29.89%  
Acquisition cost ₩ 23,437  
Book value [Abstract]    
Acquisition 23,437  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 23,437  
Share in net assets 23,437  
Total assets 78,410  
Total liabilities 0  
Net assets 78,410  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ 0  
KAS INVESTMENT II LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Holding company  
Location USA  
Percentage of ownership [21] 29.89%  
Effective percentage of ownership [2] 29.89%  
Acquisition cost ₩ 23,343  
Book value [Abstract]    
Acquisition 23,343  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 23,343  
Share in net assets 23,343  
Total assets 78,096  
Total liabilities 0  
Net assets 78,096  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ 0  
Energyco LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership 29.00%  
Effective percentage of ownership [2] 29.00%  
Acquisition cost ₩ 1,659  
Book value [Abstract]    
Acquisition 1,659  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 1,659  
Share in net assets 830  
Total assets 3,425  
Total liabilities 563  
Net assets 2,862  
Investment differential 829  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ (2,856)  
CAES, LLC    
Disclosure of joint ventures [Line Items]    
Key operation activities Holding company  
Location USA  
Percentage of ownership 36.00%  
Effective percentage of ownership [2] 36.00%  
Acquisition cost ₩ 19,414  
Book value [Abstract]    
Acquisition 19,414  
Disposal 0  
Dividends received (297)  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) (1,491)  
Ending balance 17,626  
Share in net assets 14,702  
Total assets 40,840  
Total liabilities 0  
Net assets 40,840  
Investment differential 2,924  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ (1,656)  
Hapcheon Floating Photovoltaic Power Plant Inc.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership [3] 19.47%  
Effective percentage of ownership [2] 19.47%  
Acquisition cost ₩ 1,890  
Book value [Abstract]    
Acquisition 1,890  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 1,890  
Share in net assets 1,890  
Total assets 9,708  
Total liabilities 0  
Net assets 9,708  
Investment differential 0  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ 0  
Busan Industrial Solar Power Co., Ltd.    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership 28.02%  
Effective percentage of ownership [2] 28.02%  
Acquisition cost ₩ 510  
Book value [Abstract]    
Acquisition 510  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 510  
Share in net assets 220  
Total assets 15,283  
Total liabilities 14,499  
Net assets 784  
Investment differential 290  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 19  
Profit (loss) for the period of JointVentures ₩ (485)  
Bitsolar Energy Co., Ltd.,    
Disclosure of joint ventures [Line Items]    
Key operation activities Power generation  
Location KOREA  
Percentage of ownership 27.10%  
Effective percentage of ownership [2] 27.10%  
Acquisition cost ₩ 352  
Book value [Abstract]    
Acquisition 352  
Disposal 0  
Dividends received 0  
Share of income (loss) 0  
Other comprehensive income (loss) 0  
Others (book value) 0  
Ending balance 352  
Share in net assets (1,302)  
Total assets 144,758  
Total liabilities 149,561  
Net assets (4,803)  
Investment differential 1,654  
Intercompany transaction 0  
Others (consolidated FS) 0  
Sales of JointVentures 0  
Profit (loss) for the period of JointVentures ₩ (6,116)  
Significant restrictions on its abilities Dividends can only be paid when all conditions of the loan agreement are satisfied.  
[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. Accordingly, the entities are classified as joint ventures.
[2] The percentage of ownership shown above is after considering the treasury stocks and others.
[3] According to the shareholders' agreement, the parties have joint control over all decisions related to financial and operation. Accordingly, the entity is classified as joint ventures.
[4] Daejung Offshore Wind Power Co., Ltd. and GS Donghae Electric Power Co., Ltd. are reclassified from joint ventures to associates, and Jeongam Wind Power Co., Ltd. and Korea Power Engineering Service Co., Ltd. are reclassified from associates to joint ventures during the year ended December 31, 2019.
[5] It was determined that there is objective evidence of impairment due to prolonged operating losses. As a result, the Company recognized an impairment loss of KRW248 million in impairment loss on investments in associates and joint ventures for the year ended December 31, 2019.
[6] The joint arrangement which the Company has joint control is structured through a separate company. The parties have joint control over the joint arrangement are classified as joint ventures, judging that they have rights to the net assets of the arrangement
[7] It was determined that there is objective evidence of impairment due to prolonged operating losses. As a result, the Company recognized an impairment loss of KRW347 million in impairment loss on investments in associates and joint ventures for the year ended December 31, 2019.
[8] The effective percentage of ownership is less than 20%. However, all operation related decisions must be agreed by ownership parties. Accordingly, the entity is classified as joint ventures.
[9] 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.
[10] Although the nominal percentage of ownership is 29.00%, the effective percentage of ownership is 54.24%, considering the interest of financial investors as a liability component.
[11] It was determined that there is objective evidence of impairment due to prolonged operating losses. As a result, the Company recognized an impairment loss of KRW21,827 million in impairment loss on investments in associates and joint ventures for the year ended December 31, 2019.
[12] The effective percentage of ownership is more than 50%. However, all operation related decisions must be agreed by all ownership parties. Accordingly, the entity is classified as a joint venture.
[13] The effective percentage of ownership is more than 50%. However, according to the shareholders' agreement, all operation related decisions must be agreed by all ownership parties. Accordingly, the entity is classified as a joint venture.
[14] Eumseong Natural Gas Power Co., Ltd. and Dangjin Eco Solar Power Co., Ltd. were established by spin-off from Dangjin Eco Power Co., Ltd. After the spin-off, Eumseong Natural Gas Power Co., Ltd. was merged and absorbed by the Company during December 2019.
[15] The temporary percentage of ownership is more than 50% due to differences in the timing of the payment. The Company is expected to exert significant influence after payment is completed in the first quarter of 2020.
[16] The effective percentage of ownership is less than 20%. However, according to the shareholders' agreement, decisions related pricipal operation must be agreed by all ownership parties. Accordingly, the Company can exercise significant influence
[17] The effective percentage of ownership is less than 20%. However, according to the shareholders' agreement, decisions on the major activities must be agreed to by all ownership parties. Accordingly, the entities are classified as joint ventures.
[18] The classification of the entity was changed from an associate to a joint venture, due to the additional investment during the year ended December 31, 2020
[19] The percentage of ownership decreased due to the unequal capital increase. The entity was reclassified from an associate to a joint venture, due to the changes in voting rights.
[20] The name of the entity has changed during the current year. According to the Dayone Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) Investment Agreement signed in March 2011, the Company has a commitment to guarantee principal and certain returns on shares of Dayone Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) held by NH Power 2nd Co., Ltd. and the National Agricultural Cooperative Federation. Since NH Power 2nd Co., Ltd. and the National Agricultural Cooperative Federation have put option regarding their share of the entity, the Company was deemed to have acquired an additional 15.64% stake. As a result, the effective percentage of ownership is 46.3% in the current and prior period. In accordance with shareholders' agreement signed during the current period, the Company has joint control with other investors in making important financial and operation decisions, so it has been reclassified from an associate to a joint venture.
[21] The entities were included in the joint ventures due to the new investment during the year ended December 31, 2020. Since the final settlement of the entity was not completed before the Company's financial statements date, the financial statements of October 7, were used for consolidation.