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v3.21.1

Intangible Assets other than Goodwill (Details) $ in Thousands, ₩ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 KRW (₩) | Dec. 31, 2019 KRW (₩) | Dec. 31, 2020 AUD ($) | Dec. 31, 2019 AUD ($)
Software | ERP system and others |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 81 | ₩ 432 |  |
Remaining amortisation period of intangible assets material to entity | 2 months ~ 4 months | 1 years and 2 months ~ 1 years and 4 months |  |
Software | Electricity sales information system |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value |  | ₩ 4,824 |  |
Remaining amortisation period of intangible assets material to entity |  | 3 years |  |
Copyrights, patents rights and other industrial rights | Smart technology verification and standard design project conducting right |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 4,936 | ₩ 6,787 |  |
Remaining amortisation period of intangible assets material to entity | 1 years and 9 months | 2 years and 9 months |  |
Copyrights, patents rights and other industrial rights | Contributions to ARP NRC DC |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 29,219 | ₩ 34,755 |  |
Remaining amortisation period of intangible assets material to entity | 7 years | 8 years |  |
Mining rights | Mining right of Bylong mine |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | $ |  |  | $ 0 | $ 0
Remaining amortisation period of intangible assets material to entity | The carrying amount of mining right does not exist, because KEPCO Australia Pty., Ltd. and KEPCO Bylong Australia Pty., Ltd. had recognized impairment losses in full. | The carrying amount of mining right does not exist, because KEPCO Australia Pty., Ltd. and KEPCO Bylong Australia Pty., Ltd. recognized impairment losses in full during the year ended December 31, 2019. |  |
Development expenditures | Electricity sales information system |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 8,229 | ₩ 15,283 |  |
Remaining amortisation period of intangible assets material to entity | 1 years and 2 months | 2 years and 3 months |  |
Usage rights of donated assets and other | Dangjin power plant load facility usage right |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 1,574 | ₩ 7,870 |  |
Remaining amortisation period of intangible assets material to entity | 3 months | 1 years 3 months |  |
Usage rights of donated assets and other | Right of use electricity and gas supply facility (Community district of Songdo) |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 10,016 |  |  |
Remaining amortisation period of intangible assets material to entity | 9 years and 6 months |  |  |
Usage rights of donated assets and other | Sejong Haengbogdosi sharing charge |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 26,847 | ₩ 31,385 |  |
Remaining amortisation period of intangible assets material to entity | 5 years and 11 months | 6 years and 11 months |  |
Others | Occupancy and use of public waters |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 87,035 | ₩ 92,446 |  |
Remaining amortisation period of intangible assets material to entity | 16 years 1 months | 17 years 1 months |  |
Others | Greenhouse gas emissions rights |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 61,373 |  |  |
Remaining amortisation period of intangible assets material to entity | - |  |  |
Others | Business rights |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 166,207 | ₩ 171,955 |  |
Remaining amortisation period of intangible assets material to entity | 28 years 11 months | 29 years 11 months |  |

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