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Related Parties - Summary of Guarantees Provided To Related Parties (Details) ₩ in Millions, ر.س in Millions, $ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2024 SAR (ر.س) | Dec. 31, 2024 MXN ($) | Dec. 31, 2024 KRW (₩)
Performance guarantees 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Shuweihat Asia Operation & Maintenance Company |  | Shuweihat Asia Operation & Maintenance Company |  | Shuweihat Asia Operation & Maintenance Company |  | Shuweihat Asia Operation & Maintenance Company |
Amount of guarantees | $ | $ 11,000 |  |  |  |  |  |  |
Name of Guarantee | Shuweihat Asia Power Investment B.V. |  | Shuweihat Asia Power Investment B.V. |  | Shuweihat Asia Power Investment B.V. |  | Shuweihat Asia Power Investment B.V. |
Performance guarantees and others 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees | $ | $ 3,986,562 |  |  |  |  |  |  |
Name of Guarantee | FAB and others |  | FAB and others |  | FAB and others |  | FAB and others |
Performance guarantees and others 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Rabigh Operation & Maintenance Company Limited |  | Rabigh Operation & Maintenance Company Limited |  | Rabigh Operation & Maintenance Company Limited |  | Rabigh Operation & Maintenance Company Limited |
Amount of guarantees | ر.س |  |  | ر.س 11,200 |  |  |  |  |
Name of Guarantee | National Bank of Kuwait |  | National Bank of Kuwait |  | National Bank of Kuwait |  | National Bank of Kuwait |
Debt guarantees 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Barakah One Company |  | Barakah One Company |  | Barakah One Company |  | Barakah One Company |
Amount of guarantees | $ | $ 1,223,355 |  |  |  |  |  |  |
Name of Guarantee | Export-Import Bank of Korea and others |  | Export-Import Bank of Korea and others |  | Export-Import Bank of Korea and others |  | Export-Import Bank of Korea and others |
Performance guarantees 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Rabigh Operation & Maintenance Company Limited |  | Rabigh Operation & Maintenance Company Limited |  | Rabigh Operation & Maintenance Company Limited |  | Rabigh Operation & Maintenance Company Limited |
Amount of guarantees | $ | $ 1,387 |  |  |  |  |  |  |
Name of Guarantee | Rabigh Electricity Company |  | Rabigh Electricity Company |  | Rabigh Electricity Company |  | Rabigh Electricity Company |
Performance guarantees 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation | [1] | Korea Electric Power Corporation | [1] | Korea Electric Power Corporation | [1] | Korea Electric Power Corporation | [1]
Name of Principal obligor | RE Holiday Holdings LLC | [1] | RE Holiday Holdings LLC | [1] | RE Holiday Holdings LLC | [1] | RE Holiday Holdings LLC | [1]
Amount of guarantees | $ | $ 203,981 | [1] |  |  |  |  |  |
Name of Guarantee | EFS Renewables Holdings, LLC, CA-CIB and others | [1] | EFS Renewables Holdings, LLC, CA-CIB and others | [1] | EFS Renewables Holdings, LLC, CA-CIB and others | [1] | EFS Renewables Holdings, LLC, CA-CIB and others | [1]
Performance guarantees 4 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | RE Pioneer Holdings LLC |  | RE Pioneer Holdings LLC |  | RE Pioneer Holdings LLC |  | RE Pioneer Holdings LLC |
Amount of guarantees | $ | $ 106,873 |  |  |  |  |  |  |
Name of Guarantee | EFS Renewables Holdings, LLC |  | EFS Renewables Holdings, LLC |  | EFS Renewables Holdings, LLC |  | EFS Renewables Holdings, LLC |
Performance guarantees 5 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Rabigh Electricity Company |  | Rabigh Electricity Company |  | Rabigh Electricity Company |  | Rabigh Electricity Company |
Amount of guarantees | ر.س |  |  | ر.س 4,151 |  |  |  |  |
Name of Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank |  | Hana Bank |
Performance guarantees 6 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | International Offshore Power Transmission Holding Company Limited |  | International Offshore Power Transmission Holding Company Limited |  | International Offshore Power Transmission Holding Company Limited |  | International Offshore Power Transmission Holding Company Limited |
Amount of guarantees | $ | $ 52,500 |  |  |  |  |  |  |
Name of Guarantee | Mizuho Bank |  | Mizuho Bank |  | Mizuho Bank |  | Mizuho Bank |
Other performance guarantees 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Horus Solar, S.A. de C.V. |  | Horus Solar, S.A. de C.V. |  | Horus Solar, S.A. de C.V. |  | Horus Solar, S.A. de C.V. |
Amount of guarantees | $ |  |  |  |  | $ 14,843 |  |  |
Name of Guarantee | CENACE and others |  | CENACE and others |  | CENACE and others |  | CENACE and others |
Other performance guarantees 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Recursos Solares PV de Mexico II, S.A. de C.V. |  | Recursos Solares PV de Mexico II, S.A. de C.V. |  | Recursos Solares PV de Mexico II, S.A. de C.V. |  | Recursos Solares PV de Mexico II, S.A. de C.V. |
Amount of guarantees | $ 393 |  |  |  | $ 1,518 |  |  |
Name of Guarantee | SEMARNAT / CFE Transmission |  | SEMARNAT / CFE Transmission |  | SEMARNAT / CFE Transmission |  | SEMARNAT / CFE Transmission |
Other performance guarantees 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Sunmex Renovables, S.A. de C.V. |  | Sunmex Renovables, S.A. de C.V. |  | Sunmex Renovables, S.A. de C.V. |  | Sunmex Renovables, S.A. de C.V. |
Amount of guarantees | $ 9,078 |  |  |  | $ 4,929 |  |  |
Name of Guarantee | CENACE / CFE Transmission and others |  | CENACE / CFE Transmission and others |  | CENACE / CFE Transmission and others |  | CENACE / CFE Transmission and others |
Performance guarantees 7 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. | [2] | Korea East-West Power Co., Ltd. | [2] | Korea East-West Power Co., Ltd. | [2] | Korea East-West Power Co., Ltd. | [2]
Name of Principal obligor | South Jamaica Power Company Limited | [2] | South Jamaica Power Company Limited | [2] | South Jamaica Power Company Limited | [2] | South Jamaica Power Company Limited | [2]
Amount of guarantees | $ | $ 14,400 | [2] |  |  |  |  |  |
Name of Guarantee | Hana Bank | [2] | Hana Bank | [2] | Hana Bank | [2] | Hana Bank | [2]
Other performance guarantees 4 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees | $ | $ 7,000 |  |  |  |  |  |  |
Name of Guarantee | Credit Agricole |  | Credit Agricole |  | Credit Agricole |  | Credit Agricole |
Collateralized money invested 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation | [3] | Korea Electric Power Corporation | [3] | Korea Electric Power Corporation | [3] | Korea Electric Power Corporation | [3]
Name of Principal obligor | Pulau Indah Power Plant Sdn. Bhd. | [3] | Pulau Indah Power Plant Sdn. Bhd. | [3] | Pulau Indah Power Plant Sdn. Bhd. | [3] | Pulau Indah Power Plant Sdn. Bhd. | [3]
Amount of guarantees |  |  |  |  |  |  | ₩ 13,210 | [3]
Name of Guarantee | Malaysian Trustee Berhad | [3] | Malaysian Trustee Berhad | [3] | Malaysian Trustee Berhad | [3] | Malaysian Trustee Berhad | [3]
Debt guarantees 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | KEPCO for Power Company |  | KEPCO for Power Company |  | KEPCO for Power Company |  | KEPCO for Power Company |
Amount of guarantees | $ | $ 60,000 |  |  |  |  |  |  |
Name of Guarantee | Riyad bank |  | Riyad bank |  | Riyad bank |  | Riyad bank |
Other performance guarantees 5 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees | $ | $ 70,000 |  |  |  |  |  |  |
Name of Guarantee | SMBC Seoul |  | SMBC Seoul |  | SMBC Seoul |  | SMBC Seoul |
Collateralized money invested 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Cheongna Energy Co., Ltd. |  | Cheongna Energy Co., Ltd. |  | Cheongna Energy Co., Ltd. |  | Cheongna Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 46,158 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Guarantees for supplemental funding 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |
Name of Principal obligor | Xe-Pian Xe-Namnoy Power Co., Ltd. |  | Xe-Pian Xe-Namnoy Power Co., Ltd. |  | Xe-Pian Xe-Namnoy Power Co., Ltd. |  | Xe-Pian Xe-Namnoy Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 73,064 |
Name of Guarantee | Krung Thai Bank |  | Krung Thai Bank |  | Krung Thai Bank |  | Krung Thai Bank |
Collateralized money invested 4 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. | [5] | Korea Western Power Co., Ltd. | [5] | Korea Western Power Co., Ltd. | [5] | Korea Western Power Co., Ltd. | [5]
Name of Principal obligor | Dongducheon Dream Power Co., Ltd. | [5] | Dongducheon Dream Power Co., Ltd. | [5] | Dongducheon Dream Power Co., Ltd. | [5] | Dongducheon Dream Power Co., Ltd. | [5]
Amount of guarantees |  |  |  |  |  |  | ₩ 54,242 | [5]
Name of Guarantee | Kookmin Bank and others | [5] | Kookmin Bank and others | [5] | Kookmin Bank and others | [5] | Kookmin Bank and others | [5]
Collateralized money invested 5 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |
Name of Principal obligor | PT. Mutiara Jawa |  | PT. Mutiara Jawa |  | PT. Mutiara Jawa |  | PT. Mutiara Jawa |
Amount of guarantees |  |  |  |  |  |  | ₩ 5,735 |
Debt guarantees 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 20,300 |
Name of Guarantee | HY western 1st co., Ltd |  | HY western 1st co., Ltd |  | HY western 1st co., Ltd |  | HY western 1st co., Ltd |
Collateralized money invested 6 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Haeng Bok Do Si Photovoltaic Power Co., Ltd. |  | Haeng Bok Do Si Photovoltaic Power Co., Ltd. |  | Haeng Bok Do Si Photovoltaic Power Co., Ltd. |  | Haeng Bok Do Si Photovoltaic Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 361 |
Name of Guarantee | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |
Collateralized money invested 7 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Shin Pyeongtaek Power Co., Ltd. |  | Shin Pyeongtaek Power Co., Ltd. |  | Shin Pyeongtaek Power Co., Ltd. |  | Shin Pyeongtaek Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 139,059 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Collateralized money invested 8 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Haemodum Solar Co., Ltd. |  | Haemodum Solar Co., Ltd. |  | Haemodum Solar Co., Ltd. |  | Haemodum Solar Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 3,230 |
Name of Guarantee | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |
Guarantees for supplemental funding 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 9 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Muan Solar Park Co., Ltd. |  | Muan Solar Park Co., Ltd. |  | Muan Solar Park Co., Ltd. |  | Muan Solar Park Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 6,267 |
Name of Guarantee | IBK and others |  | IBK and others |  | IBK and others |  | IBK and others |
Collateralized money invested 10 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Anjwa Smart Farm & Solar City Co., Ltd. |  | Anjwa Smart Farm & Solar City Co., Ltd. |  | Anjwa Smart Farm & Solar City Co., Ltd. |  | Anjwa Smart Farm & Solar City Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 8,298 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 11 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Seoroseoro Sunny Power Plant Co., Ltd. |  | Seoroseoro Sunny Power Plant Co., Ltd. |  | Seoroseoro Sunny Power Plant Co., Ltd. |  | Seoroseoro Sunny Power Plant Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,030 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 12 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | YuDang Solar Co., Ltd |  | YuDang Solar Co., Ltd |  | YuDang Solar Co., Ltd |  | YuDang Solar Co., Ltd |
Amount of guarantees |  |  |  |  |  |  | ₩ 617 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 13 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |  | Korea Western Power Co., Ltd |
Name of Principal obligor | Hapcheon Floating Photovoltaic Power Plant Inc. |  | Hapcheon Floating Photovoltaic Power Plant Inc. |  | Hapcheon Floating Photovoltaic Power Plant Inc. |  | Hapcheon Floating Photovoltaic Power Plant Inc. |
Amount of guarantees |  |  |  |  |  |  | ₩ 11,334 |
Name of Guarantee | Nonghyup Bank and others |  | Nonghyup Bank and others |  | Nonghyup Bank and others |  | Nonghyup Bank and others |
Guarantees for supplemental funding 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 14 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Yeongwol Eco Wind Co., Ltd. |  | Yeongwol Eco Wind Co., Ltd. |  | Yeongwol Eco Wind Co., Ltd. |  | Yeongwol Eco Wind Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 890 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 15 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Gurae Resident Power Co., Ltd. |  | Gurae Resident Power Co., Ltd. |  | Gurae Resident Power Co., Ltd. |  | Gurae Resident Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 334 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Guarantees for supplemental funding 4 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 16 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Gunsan Land Solar Co., Ltd. |  | Gunsan Land Solar Co., Ltd. |  | Gunsan Land Solar Co., Ltd. |  | Gunsan Land Solar Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 23,163 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Guarantees for supplemental funding 5 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 17 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Seobusambo highway photovoltaics Co., Ltd. |  | Seobusambo highway photovoltaics Co., Ltd. |  | Seobusambo highway photovoltaics Co., Ltd. |  | Seobusambo highway photovoltaics Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 3,310 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Guarantees for supplemental funding 6 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 18 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Eumseong Eco Park Co., Ltd. |  | Eumseong Eco Park Co., Ltd. |  | Eumseong Eco Park Co., Ltd. |  | Eumseong Eco Park Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 11,613 |
Name of Guarantee | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |
Guarantees for supplemental funding 7 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 19 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | PungBack Wind Farm Corporation |  | PungBack Wind Farm Corporation |  | PungBack Wind Farm Corporation |  | PungBack Wind Farm Corporation |
Amount of guarantees |  |  |  |  |  |  | ₩ 7,760 |
Name of Guarantee | Hanwha Life Insurance Co., Ltd. and others |  | Hanwha Life Insurance Co., Ltd. and others |  | Hanwha Life Insurance Co., Ltd. and others |  | Hanwha Life Insurance Co., Ltd. and others |
Collateralized money invested 20 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Seokmun Energy Co., Ltd. |  | Seokmun Energy Co., Ltd. |  | Seokmun Energy Co., Ltd. |  | Seokmun Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 15,456 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Loan payment guarantee |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | Wadi Noor Solar Power Company SAOC |  | Wadi Noor Solar Power Company SAOC |  | Wadi Noor Solar Power Company SAOC |  | Wadi Noor Solar Power Company SAOC |
Amount of guarantees | $ | $ 54,855 |  |  |  |  |  |  |
Name of Guarantee | DBS Bank |  | DBS Bank |  | DBS Bank |  | DBS Bank |
Collateralized money invested 21 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Chun-cheon Energy Co., Ltd. |  | Chun-cheon Energy Co., Ltd. |  | Chun-cheon Energy Co., Ltd. |  | Chun-cheon Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 36,599 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Collateralized money invested 22 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Honam Wind Power Co., Ltd. |  | Honam Wind Power Co., Ltd. |  | Honam Wind Power Co., Ltd. |  | Honam Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 4,833 |
Name of Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |
Guarantees for supplemental funding 8 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 90,800 | [4]
Collateralized money invested 23 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | GS Donghae Electric Power Co., Ltd. |  | GS Donghae Electric Power Co., Ltd. |  | GS Donghae Electric Power Co., Ltd. |  | GS Donghae Electric Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 279,432 |
Name of Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |
Guarantees for supplemental funding 9 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 24 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Yeonggwangbaeksu Wind Power Co., Ltd. |  | Yeonggwangbaeksu Wind Power Co., Ltd. |  | Yeonggwangbaeksu Wind Power Co., Ltd. |  | Yeonggwangbaeksu Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 3,730 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Collateralized money invested 25 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Yeonggwang Wind Power Co., Ltd. |  | Yeonggwang Wind Power Co., Ltd. |  | Yeonggwang Wind Power Co., Ltd. |  | Yeonggwang Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 26,146 |
Name of Guarantee | KDB Capital Corporation and others |  | KDB Capital Corporation and others |  | KDB Capital Corporation and others |  | KDB Capital Corporation and others |
Collateralized money invested 26 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Daesan Green Energy Co., Ltd. |  | Daesan Green Energy Co., Ltd. |  | Daesan Green Energy Co., Ltd. |  | Daesan Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 25,331 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 27 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd |  | Korea East-West Power Co., Ltd |  | Korea East-West Power Co., Ltd |  | Korea East-West Power Co., Ltd |
Name of Principal obligor | Taebaek Gadeoksan Wind Power Co., Ltd. |  | Taebaek Gadeoksan Wind Power Co., Ltd. |  | Taebaek Gadeoksan Wind Power Co., Ltd. |  | Taebaek Gadeoksan Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 22,908 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 28 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 100,579 |
Name of Guarantee | MUFG and others |  | MUFG and others |  | MUFG and others |  | MUFG and others |
Guarantees for supplemental funding 10 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Name of Guarantee | Sumitomo mitsui banking and others |  | Sumitomo mitsui banking and others |  | Sumitomo mitsui banking and others |  | Sumitomo mitsui banking and others |
Collateralized money invested 29 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 48,761 |
Name of Guarantee | JCSD Trustee Services Limited and others |  | JCSD Trustee Services Limited and others |  | JCSD Trustee Services Limited and others |  | JCSD Trustee Services Limited and others |
Other guarantees 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia |
Amount of guarantees | $ | $ 3,150 |  |  |  |  |  |  |
Name of Guarantee | PT. Adaro Indonesia |  | PT. Adaro Indonesia |  | PT. Adaro Indonesia |  | PT. Adaro Indonesia |
Guarantees for supplemental funding 11 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 30 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Bitsolar Energy Co., Ltd. |  | Bitsolar Energy Co., Ltd. |  | Bitsolar Energy Co., Ltd. |  | Bitsolar Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 |
Name of Guarantee | Mirae Asset Life Insurance Co. Ltd. and others |  | Mirae Asset Life Insurance Co. Ltd. and others |  | Mirae Asset Life Insurance Co. Ltd. and others |  | Mirae Asset Life Insurance Co. Ltd. and others |
Performance guarantees 8 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 |
Collateralized money invested 31 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Cheongju Eco Park Co., Ltd. |  | Cheongju Eco Park Co., Ltd. |  | Cheongju Eco Park Co., Ltd. |  | Cheongju Eco Park Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 10,636 |
Name of Guarantee | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |
Collateralized money invested 32 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Busan Industrial Solar Power Co., Ltd. |  | Busan Industrial Solar Power Co., Ltd. |  | Busan Industrial Solar Power Co., Ltd. |  | Busan Industrial Solar Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,160 |
Name of Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |
Collateralized money invested 33 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Yangyang Wind Power Co., Ltd. |  | Yangyang Wind Power Co., Ltd. |  | Yangyang Wind Power Co., Ltd. |  | Yangyang Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 11,640 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 34 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | KPE Green Energy Co., Ltd. |  | KPE Green Energy Co., Ltd. |  | KPE Green Energy Co., Ltd. |  | KPE Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 8,230 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 35 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Goheung New Energy Co., Ltd. |  | Goheung New Energy Co., Ltd. |  | Goheung New Energy Co., Ltd. |  | Goheung New Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 4,818 |
Name of Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |
Collateralized money invested 36 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Seungmun Green Energy |  | Seungmun Green Energy |  | Seungmun Green Energy |  | Seungmun Green Energy |
Amount of guarantees |  |  |  |  |  |  | ₩ 12,745 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Guarantees for supplemental funding 12 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 37 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Yanggu Floating Photovoltaic Power Plant Inc. |  | Yanggu Floating Photovoltaic Power Plant Inc. |  | Yanggu Floating Photovoltaic Power Plant Inc. |  | Yanggu Floating Photovoltaic Power Plant Inc. |
Amount of guarantees |  |  |  |  |  |  | ₩ 846 |
Name of Guarantee | Korea Development Bank |  | Korea Development Bank |  | Korea Development Bank |  | Korea Development Bank |
Collateralized money invested 38 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Hoenggye Renewable Energy Co., Ltd. |  | Hoenggye Renewable Energy Co., Ltd. |  | Hoenggye Renewable Energy Co., Ltd. |  | Hoenggye Renewable Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,375 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 39 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |  | Korea East-West Power Co., Ltd. |
Name of Principal obligor | Kumyang Eco Park Co., Ltd. |  | Kumyang Eco Park Co., Ltd. |  | Kumyang Eco Park Co., Ltd. |  | Kumyang Eco Park Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 3,841 |
Name of Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |
Guarantees for supplemental funding 13 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 40 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 18 |
Collateralized money invested 41 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Daeryun Power Co., Ltd. |  | Daeryun Power Co., Ltd. |  | Daeryun Power Co., Ltd. |  | Daeryun Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 31,093 |
Name of Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |
Guarantees for supplemental funding 14 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 42 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Daegu Green Power Co., Ltd. |  | Daegu Green Power Co., Ltd. |  | Daegu Green Power Co., Ltd. |  | Daegu Green Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 30,513 |
Name of Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |
Collateralized money invested 43 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 21,328 |
Name of Guarantee | Standard Chartered |  | Standard Chartered |  | Standard Chartered |  | Standard Chartered |
Collateralized money invested 44 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Pyeongchang Wind Power Co., Ltd. |  | Pyeongchang Wind Power Co., Ltd. |  | Pyeongchang Wind Power Co., Ltd. |  | Pyeongchang Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 12,147 |
Name of Guarantee | Woori Bank, Shinhan Bank and others |  | Woori Bank, Shinhan Bank and others |  | Woori Bank, Shinhan Bank and others |  | Woori Bank, Shinhan Bank and others |
Performance guarantees 9 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Kelar S.A. |  | Kelar S.A. |  | Kelar S.A. |  | Kelar S.A. |
Amount of guarantees | $ | $ 30,030 |  |  |  |  |  |  |
Name of Guarantee | Hana Bank, MUFG |  | Hana Bank, MUFG |  | Hana Bank, MUFG |  | Hana Bank, MUFG |
Performance guarantees 10 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Daehan Wind Power PSC |  | Daehan Wind Power PSC |  | Daehan Wind Power PSC |  | Daehan Wind Power PSC |
Amount of guarantees | $ | $ 1,800 |  |  |  |  |  |  |
Name of Guarantee | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank |
Payment guarantees 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees | $ | $ 11,707 | [6] |  |  |  |  |  |
Name of Guarantee | Hana Bank | [6] | Hana Bank | [6] | Hana Bank | [6] | Hana Bank | [6]
Performance guarantees 11 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 |
Payment guarantees 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees | $ | $ 2,000 | [7] |  |  |  |  |  |
Name of Guarantee | Hana Bank | [7] | Hana Bank | [7] | Hana Bank | [7] | Hana Bank | [7]
Collateralized money invested 45 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Taebaek Guinemi Wind Power Co., Ltd. |  | Taebaek Guinemi Wind Power Co., Ltd. |  | Taebaek Guinemi Wind Power Co., Ltd. |  | Taebaek Guinemi Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 13,559 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 46 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Solaseado Solar Power Co., Ltd. |  | Solaseado Solar Power Co., Ltd. |  | Solaseado Solar Power Co., Ltd. |  | Solaseado Solar Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 16,979 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Performance guarantees 12 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [8]
Name of Guarantee | HC elementary materials | [8] | HC elementary materials | [8] | HC elementary materials | [8] | HC elementary materials | [8]
Collateralized money invested 47 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Naepo Green Energy Co., Ltd. |  | Naepo Green Energy Co., Ltd. |  | Naepo Green Energy Co., Ltd. |  | Naepo Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 48,031 |
Name of Guarantee | IBK and others |  | IBK and others |  | IBK and others |  | IBK and others |
Payment guarantees 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. | [9] | Korea Southern Power Co., Ltd. | [9] | Korea Southern Power Co., Ltd. | [9] | Korea Southern Power Co., Ltd. | [9]
Name of Principal obligor | Samcheok Eco Materials Co., Ltd. | [9] | Samcheok Eco Materials Co., Ltd. | [9] | Samcheok Eco Materials Co., Ltd. | [9] | Samcheok Eco Materials Co., Ltd. | [9]
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [9]
Name of Guarantee | KIS SF the 22nd Co., Ltd. | [9] | KIS SF the 22nd Co., Ltd. | [9] | KIS SF the 22nd Co., Ltd. | [9] | KIS SF the 22nd Co., Ltd. | [9]
Performance guarantees 13 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | KOSPO Power Services Ltda. |  | KOSPO Power Services Ltda. |  | KOSPO Power Services Ltda. |  | KOSPO Power Services Ltda. |
Name of Principal obligor | Kelar S.A. |  | Kelar S.A. |  | Kelar S.A. |  | Kelar S.A. |
Amount of guarantees | $ | $ 1,316 |  |  |  |  |  |  |
Name of Guarantee | Scotia bank |  | Scotia bank |  | Scotia bank |  | Scotia bank |
Collateralized money invested 48 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd |  | Korea Southern Power Co., Ltd |  | Korea Southern Power Co., Ltd |  | Korea Southern Power Co., Ltd |
Name of Principal obligor | Omisan Wind Power Co., Ltd. |  | Omisan Wind Power Co., Ltd. |  | Omisan Wind Power Co., Ltd. |  | Omisan Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 10,859 |
Name of Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |
Collateralized money invested 49 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Geumsungsan Wind Power Co., Ltd. |  | Geumsungsan Wind Power Co., Ltd. |  | Geumsungsan Wind Power Co., Ltd. |  | Geumsungsan Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 7,839 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Performance Guarantees And Guarantees For Supplemental Funding 1 [Member] |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 30,000 | [4]
Guarantees for supplemental funding 15 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 50 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd |  | Korea Southern Power Co., Ltd |  | Korea Southern Power Co., Ltd |  | Korea Southern Power Co., Ltd |
Name of Principal obligor | HORANG ENERGY Inc. |  | HORANG ENERGY Inc. |  | HORANG ENERGY Inc. |  | HORANG ENERGY Inc. |
Amount of guarantees |  |  |  |  |  |  | ₩ 3,808 |
Name of Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |
Performance guarantees and guarantees for supplemental funding 2 [Member] |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 51 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Haman Green Energy Co., Ltd. |  | Haman Green Energy Co., Ltd. |  | Haman Green Energy Co., Ltd. |  | Haman Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,810 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 52 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Jeongeup Green Power Co., Ltd. |  | Jeongeup Green Power Co., Ltd. |  | Jeongeup Green Power Co., Ltd. |  | Jeongeup Green Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 8,847 |
Name of Guarantee | Mirae Asset Securities Co., Ltd. |  | Mirae Asset Securities Co., Ltd. |  | Mirae Asset Securities Co., Ltd. |  | Mirae Asset Securities Co., Ltd. |
Guarantees for supplemental funding 16 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 53 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | HyChangwon Fuel Cell. Co., Ltd. |  | HyChangwon Fuel Cell. Co., Ltd. |  | HyChangwon Fuel Cell. Co., Ltd. |  | HyChangwon Fuel Cell. Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 9,277 |
Name of Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |
Guarantees for supplemental funding 17 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 54 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |  | Korea Southern Power Co., Ltd. |
Name of Principal obligor | Roof One Energy Co., Ltd. |  | Roof One Energy Co., Ltd. |  | Roof One Energy Co., Ltd. |  | Roof One Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,000 |
Name of Guarantee | Woori Bank |  | Woori Bank |  | Woori Bank |  | Woori Bank |
Guarantees for supplemental funding 18 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Payment guarantees 4 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. | [10] | Korea Hydro & Nuclear Power Co., Ltd. | [10] | Korea Hydro & Nuclear Power Co., Ltd. | [10] | Korea Hydro & Nuclear Power Co., Ltd. | [10]
Name of Principal obligor | KAS INVESTMENT I LLC | [10] | KAS INVESTMENT I LLC | [10] | KAS INVESTMENT I LLC | [10] | KAS INVESTMENT I LLC | [10]
Amount of guarantees | $ | $ 9,770 | [10] |  |  |  |  |  |
Name of Guarantee | WOORI AMERICA BANK | [10] | WOORI AMERICA BANK | [10] | WOORI AMERICA BANK | [10] | WOORI AMERICA BANK | [10]
Collateralized money invested 55 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |
Name of Principal obligor | Kelar S.A. |  | Kelar S.A. |  | Kelar S.A. |  | Kelar S.A. |
Amount of guarantees |  |  |  |  |  |  | ₩ 152,366 |
Name of Guarantee | Export-Import Bank of Korea and others |  | Export-Import Bank of Korea and others |  | Export-Import Bank of Korea and others |  | Export-Import Bank of Korea and others |
Collateralized money invested 56 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |
Name of Principal obligor | Chester Solar I SpA |  | Chester Solar I SpA |  | Chester Solar I SpA |  | Chester Solar I SpA |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,649 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 57 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |
Name of Principal obligor | Chester Solar IV SpA |  | Chester Solar IV SpA |  | Chester Solar IV SpA |  | Chester Solar IV SpA |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,452 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 58 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |
Name of Principal obligor | Chester Solar V SpA |  | Chester Solar V SpA |  | Chester Solar V SpA |  | Chester Solar V SpA |
Amount of guarantees |  |  |  |  |  |  | ₩ 262 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 59 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |
Name of Principal obligor | Diego de Almagro Solar SpA |  | Diego de Almagro Solar SpA |  | Diego de Almagro Solar SpA |  | Diego de Almagro Solar SpA |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,700 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 60 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |  | KOSPO Chile SpA |
Name of Principal obligor | Laurel SpA |  | Laurel SpA |  | Laurel SpA |  | Laurel SpA |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,432 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 61 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | YeongGwang Yaksu Wind Electric Co., Ltd. |  | YeongGwang Yaksu Wind Electric Co., Ltd. |  | YeongGwang Yaksu Wind Electric Co., Ltd. |  | YeongGwang Yaksu Wind Electric Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 41 |
Name of Guarantee | IBK and others |  | IBK and others |  | IBK and others |  | IBK and others |
Debt guarantees 5 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | PT Wampu Electric Power |  | PT Wampu Electric Power |  | PT Wampu Electric Power |  | PT Wampu Electric Power |
Amount of guarantees | $ | $ 4,716 |  |  |  |  |  |  |
Name of Guarantee | PT. Bank KB Bukopin |  | PT. Bank KB Bukopin |  | PT. Bank KB Bukopin |  | PT. Bank KB Bukopin |
Collateralized money invested 62 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Hyundai Green Power Co., Ltd. |  | Hyundai Green Power Co., Ltd. |  | Hyundai Green Power Co., Ltd. |  | Hyundai Green Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 87,392 |
Name of Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |
Debt guarantees 4 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | PT. Cirebon Electric Power |  | PT. Cirebon Electric Power |  | PT. Cirebon Electric Power |  | PT. Cirebon Electric Power |
Amount of guarantees | $ | $ 4,510 |  |  |  |  |  |  |
Name of Guarantee | Mizuho Bank |  | Mizuho Bank |  | Mizuho Bank |  | Mizuho Bank |
Guarantees for supplemental funding 19 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 63 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Green Energy Electricity Generation Co., Ltd. |  | Green Energy Electricity Generation Co., Ltd. |  | Green Energy Electricity Generation Co., Ltd. |  | Green Energy Electricity Generation Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 64 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Yaksu ESS Co., Ltd. |  | Yaksu ESS Co., Ltd. |  | Yaksu ESS Co., Ltd. |  | Yaksu ESS Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 163 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 65 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Gwangbaek Solar Power Investment Co., Ltd. |  | Gwangbaek Solar Power Investment Co., Ltd. |  | Gwangbaek Solar Power Investment Co., Ltd. |  | Gwangbaek Solar Power Investment Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 5,155 |
Name of Guarantee | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |
Collateralized money invested 66 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Muan Sunshine Solar Power Plant Co., Ltd. |  | Muan Sunshine Solar Power Plant Co., Ltd. |  | Muan Sunshine Solar Power Plant Co., Ltd. |  | Muan Sunshine Solar Power Plant Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,772 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 67 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd |  | Korea Midland Power Co., Ltd |  | Korea Midland Power Co., Ltd |  | Korea Midland Power Co., Ltd |
Name of Principal obligor | Goesan Solar park Co., Ltd. |  | Goesan Solar park Co., Ltd. |  | Goesan Solar park Co., Ltd. |  | Goesan Solar park Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 3,133 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 68 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Bitgoel Eco Energy Co., Ltd. |  | Bitgoel Eco Energy Co., Ltd. |  | Bitgoel Eco Energy Co., Ltd. |  | Bitgoel Eco Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 8,035 |
Name of Guarantee | IBK and others |  | IBK and others |  | IBK and others |  | IBK and others |
Guarantees for supplemental funding 20 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 69 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Energyco Co., Ltd. |  | Energyco Co., Ltd. |  | Energyco Co., Ltd. |  | Energyco Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,322 |
Name of Guarantee | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |
Payment Guarantees 5 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. | [10] | Korea Hydro & Nuclear Power Co., Ltd. | [10] | Korea Hydro & Nuclear Power Co., Ltd. | [10] | Korea Hydro & Nuclear Power Co., Ltd. | [10]
Name of Principal obligor | KAS INVESTMENT II LLC | [10] | KAS INVESTMENT II LLC | [10] | KAS INVESTMENT II LLC | [10] | KAS INVESTMENT II LLC | [10]
Amount of guarantees | $ | $ 9,730 | [10] |  |  |  |  |  |
Name of Guarantee | WOORI AMERICA BANK | [10] | WOORI AMERICA BANK | [10] | WOORI AMERICA BANK | [10] | WOORI AMERICA BANK | [10]
Collateralized money invested 70 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Jeju Gimnyeong Wind Power Co., Ltd. |  | Jeju Gimnyeong Wind Power Co., Ltd. |  | Jeju Gimnyeong Wind Power Co., Ltd. |  | Jeju Gimnyeong Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 250 |
Name of Guarantee | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank |
Collateralized money invested 71 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Dongbu Highway Solar Co., Ltd. |  | Dongbu Highway Solar Co., Ltd. |  | Dongbu Highway Solar Co., Ltd. |  | Dongbu Highway Solar Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 512 |
Name of Guarantee | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank |
Collateralized money invested 72 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Seobu Highway Solar Co., Ltd. |  | Seobu Highway Solar Co., Ltd. |  | Seobu Highway Solar Co., Ltd. |  | Seobu Highway Solar Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 579 |
Name of Guarantee | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank |
Collateralized money invested 73 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Yeongyang Wind Power Corporation II |  | Yeongyang Wind Power Corporation II |  | Yeongyang Wind Power Corporation II |  | Yeongyang Wind Power Corporation II |
Amount of guarantees |  |  |  |  |  |  | ₩ 11,302 |
Name of Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others |
Collateralized money invested 74 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Haeparang Energy Co., Ltd. |  | Haeparang Energy Co., Ltd. |  | Haeparang Energy Co., Ltd. |  | Haeparang Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,950 |
Name of Guarantee | Templeton Hana Asset |  | Templeton Hana Asset |  | Templeton Hana Asset |  | Templeton Hana Asset |
Guarantees for supplemental funding 21 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Name of Guarantee | Management Co., Ltd. | [4] | Management Co., Ltd. | [4] | Management Co., Ltd. | [4] | Management Co., Ltd. | [4]
Collateralized money invested 75 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Saemangeum Sebit Power Plant Co., Ltd. |  | Saemangeum Sebit Power Plant Co., Ltd. |  | Saemangeum Sebit Power Plant Co., Ltd. |  | Saemangeum Sebit Power Plant Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 27,702 |
Name of Guarantee | IBK and others |  | IBK and others |  | IBK and others |  | IBK and others |
Guarantees for supplemental funding 22 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 76 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | Yeomsubong Wind Power Co., Ltd. |  | Yeomsubong Wind Power Co., Ltd. |  | Yeomsubong Wind Power Co., Ltd. |  | Yeomsubong Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 603 |
Name of Guarantee | Korea Development Bank |  | Korea Development Bank |  | Korea Development Bank |  | Korea Development Bank |
Guarantees for supplemental funding 23 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 77 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. | [11] | Korea South-East Power Co., Ltd. | [11] | Korea South-East Power Co., Ltd. | [11] | Korea South-East Power Co., Ltd. | [11]
Name of Principal obligor | Boim Combined Heat and Power Generation Co., Ltd. | [11] | Boim Combined Heat and Power Generation Co., Ltd. | [11] | Boim Combined Heat and Power Generation Co., Ltd. | [11] | Boim Combined Heat and Power Generation Co., Ltd. | [11]
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [11]
Name of Guarantee | IBK | [11] | IBK | [11] | IBK | [11] | IBK | [11]
Guarantees for supplemental funding and others 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 76,800 | [4],[12]
Name of Guarantee | NH Investment & Securities Co., Ltd. and others | [4],[12] | NH Investment & Securities Co., Ltd. and others | [4],[12] | NH Investment & Securities Co., Ltd. and others | [4],[12] | NH Investment & Securities Co., Ltd. and others | [4],[12]
Collateralized money invested 78 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | RES Technology AD |  | RES Technology AD |  | RES Technology AD |  | RES Technology AD |
Amount of guarantees |  |  |  |  |  |  | ₩ 15,069 |
Name of Guarantee | UniCredit Bulbank and others |  | UniCredit Bulbank and others |  | UniCredit Bulbank and others |  | UniCredit Bulbank and others |
Collateralized money invested 79 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | ASM-BG Investicii AD |  | ASM-BG Investicii AD |  | ASM-BG Investicii AD |  | ASM-BG Investicii AD |
Amount of guarantees |  |  |  |  |  |  | ₩ 16,936 |
Name of Guarantee | UniCredit Bulbank and others |  | UniCredit Bulbank and others |  | UniCredit Bulbank and others |  | UniCredit Bulbank and others |
Collateralized money invested 80 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Goseong Green Power Co., Ltd. |  | Goseong Green Power Co., Ltd. |  | Goseong Green Power Co., Ltd. |  | Goseong Green Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 284,543 |
Name of Guarantee | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |
Collateralized money invested 81 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Gangneung Eco Power Co., Ltd. |  | Gangneung Eco Power Co., Ltd. |  | Gangneung Eco Power Co., Ltd. |  | Gangneung Eco Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 241,814 |
Name of Guarantee | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |
Collateralized money invested 82 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | PND Solar Co., Ltd. |  | PND Solar Co., Ltd. |  | PND Solar Co., Ltd. |  | PND Solar Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 1,736 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 83 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Hyundai Eco Energy Co., Ltd. |  | Hyundai Eco Energy Co., Ltd. |  | Hyundai Eco Energy Co., Ltd. |  | Hyundai Eco Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 8,493 |
Name of Guarantee | Samsung Life Insurance and others |  | Samsung Life Insurance and others |  | Samsung Life Insurance and others |  | Samsung Life Insurance and others |
Collateralized money invested 84 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Jaeun Resident Wind Power Plant Co., Ltd. |  | Jaeun Resident Wind Power Plant Co., Ltd. |  | Jaeun Resident Wind Power Plant Co., Ltd. |  | Jaeun Resident Wind Power Plant Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,045 |
Name of Guarantee | IBK |  | IBK |  | IBK |  | IBK |
Collateralized money invested 85 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Chungsongmeon BongSan wind power Co., Ltd. |  | Chungsongmeon BongSan wind power Co., Ltd. |  | Chungsongmeon BongSan wind power Co., Ltd. |  | Chungsongmeon BongSan wind power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,590 |
Name of Guarantee | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |  | Kyobo Life Insurance Co., Ltd. and others |
Collateralized money invested 86 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Yeongam Solar Power Co., Ltd. |  | Yeongam Solar Power Co., Ltd. |  | Yeongam Solar Power Co., Ltd. |  | Yeongam Solar Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 11,828 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Collateralized money invested 87 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Samsu Wind Power Co., Ltd. |  | Samsu Wind Power Co., Ltd. |  | Samsu Wind Power Co., Ltd. |  | Samsu Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,851 |
Name of Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |
Collateralized money invested 88 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Saemangeum Heemang Photovoltaic Co., Ltd. |  | Saemangeum Heemang Photovoltaic Co., Ltd. |  | Saemangeum Heemang Photovoltaic Co., Ltd. |  | Saemangeum Heemang Photovoltaic Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 16,137 |
Name of Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |
Collateralized money invested 89 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |  | Korea South-East Power Co., Ltd. |
Name of Principal obligor | Nepal Water & Energy Development Company Private Limited |  | Nepal Water & Energy Development Company Private Limited |  | Nepal Water & Energy Development Company Private Limited |  | Nepal Water & Energy Development Company Private Limited |
Amount of guarantees | $ | $ 97,105 |  |  |  |  |  |  |
Name of Guarantee | International Finance |  | International Finance |  | International Finance |  | International Finance |
Collateralized money invested 90 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Noeul Green Energy Co., Ltd |  | Noeul Green Energy Co., Ltd |  | Noeul Green Energy Co., Ltd |  | Noeul Green Energy Co., Ltd |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Business reserve payment guarantee |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees | $ | $ 33,333 |  |  |  |  |  |  |
Name of Guarantee | Corporation and others |  | Corporation and others |  | Corporation and others |  | Corporation and others |
Debt Guarantees 6 [Member] |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |  | Korea Midland Power Co., Ltd. |
Name of Principal obligor | PT. Cirebon Energi Prasarana |  | PT. Cirebon Energi Prasarana |  | PT. Cirebon Energi Prasarana |  | PT. Cirebon Energi Prasarana |
Amount of guarantees | $ | $ 9,290 |  |  |  |  |  |  |
Name of Guarantee | Mizuho Bank |  | Mizuho Bank |  | Mizuho Bank |  | Mizuho Bank |
Collateralized money invested 91 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Busan Green Energy Co., Ltd. |  | Busan Green Energy Co., Ltd. |  | Busan Green Energy Co., Ltd. |  | Busan Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 2,334 |
Name of Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |
Collateralized money invested 92 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Go deok Clean Energy Co., Ltd. |  | Go deok Clean Energy Co., Ltd. |  | Go deok Clean Energy Co., Ltd. |  | Go deok Clean Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 5,301 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Guarantees for Supplemental Funding 24 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  |  |  | ₩ 0 | [4]
Collateralized money invested 93 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Cheong-Song Noraesan Wind Power Co., Ltd. |  | Cheong-Song Noraesan Wind Power Co., Ltd. |  | Cheong-Song Noraesan Wind Power Co., Ltd. |  | Cheong-Song Noraesan Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 4,316 |
Name of Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others |
Collateralized money invested 94 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Gwangyang Green Energy Co., Ltd. |  | Gwangyang Green Energy Co., Ltd. |  | Gwangyang Green Energy Co., Ltd. |  | Gwangyang Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 24,217 |
Name of Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others |
Collateralized money invested 95 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd |  | Korea Hydro & Nuclear Power Co., Ltd |  | Korea Hydro & Nuclear Power Co., Ltd |  | Korea Hydro & Nuclear Power Co., Ltd |
Name of Principal obligor | Gangneung Sacheon Fuel Cell Co., Ltd. |  | Gangneung Sacheon Fuel Cell Co., Ltd. |  | Gangneung Sacheon Fuel Cell Co., Ltd. |  | Gangneung Sacheon Fuel Cell Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 9,306 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 96 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Chuncheon Green Energy Co., Ltd. |  | Chuncheon Green Energy Co., Ltd. |  | Chuncheon Green Energy Co., Ltd. |  | Chuncheon Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 17,672 |
Name of Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others |
Collateralized money invested 97 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Yangyang Suri Wind Power Co., Ltd. |  | Yangyang Suri Wind Power Co., Ltd. |  | Yangyang Suri Wind Power Co., Ltd. |  | Yangyang Suri Wind Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 8,643 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Collateralized money invested 98 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Bigeum Resident Photovoltaic Power Co., Ltd. |  | Bigeum Resident Photovoltaic Power Co., Ltd. |  | Bigeum Resident Photovoltaic Power Co., Ltd. |  | Bigeum Resident Photovoltaic Power Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 7,908 |
Name of Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others |
Collateralized money invested 99 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Songsan Green Energy Co., Ltd. |  | Songsan Green Energy Co., Ltd. |  | Songsan Green Energy Co., Ltd. |  | Songsan Green Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 7,908 |
Name of Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank |  | Hana Bank |
Collateralized money invested 100 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Changwon Nu-ri Energy Co., Ltd. |  | Changwon Nu-ri Energy Co., Ltd. |  | Changwon Nu-ri Energy Co., Ltd. |  | Changwon Nu-ri Energy Co., Ltd. |
Amount of guarantees |  |  |  |  |  |  | ₩ 7,658 |
Name of Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank |  | Hana Bank |
Collateralized Money Invested 101 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |  | Korea Hydro & Nuclear Power Co., Ltd. |
Name of Principal obligor | Imha Floating Photovoltaic Power Plant Inc. |  | Imha Floating Photovoltaic Power Plant Inc. |  | Imha Floating Photovoltaic Power Plant Inc. |  | Imha Floating Photovoltaic Power Plant Inc. |
Amount of guarantees |  |  |  |  |  |  | ₩ 6,351 |
Name of Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank |  | Hana Bank |
Certification of payment on L/C |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Nghi Son 2 Power LLC |  | Nghi Son 2 Power LLC |  | Nghi Son 2 Power LLC |  | Nghi Son 2 Power LLC |
Amount of guarantees | $ | $ 42,750 |  |  |  |  |  |  |
Name of Guarantee | SMBC Singapore and others |  | SMBC Singapore and others |  | SMBC Singapore and others |  | SMBC Singapore and others |
Certification of payment on LC 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Shuweihat Asia Power Investment B.V. |  | Shuweihat Asia Power Investment B.V. |  | Shuweihat Asia Power Investment B.V. |  | Shuweihat Asia Power Investment B.V. |
Amount of guarantees | $ | $ 9,800 |  |  |  |  |  |  |
Name of Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank |  | Hana Bank |
Certification of payment on LC 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |  | Korea Electric Power Corporation |
Name of Principal obligor | Amman Asia Electric Power Company |  | Amman Asia Electric Power Company |  | Amman Asia Electric Power Company |  | Amman Asia Electric Power Company |
Amount of guarantees | $ | $ 15,600 |  |  |  |  |  |  |
Name of Guarantee | ING Bank | [3] | ING Bank | [3] | ING Bank | [3] | ING Bank | [3]
Impounding bonus guarantees 1 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Amount of guarantees | $ | $ 5,000 | [13] |  |  |  |  |  |
Name of Guarantee | SK Eco Plant Co., Ltd. | [13] | SK Eco Plant Co., Ltd. | [13] | SK Eco Plant Co., Ltd. | [13] | SK Eco Plant Co., Ltd. | [13]
Loan payment guarantee 2 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |  | Korea Western Power Co., Ltd. |
Name of Principal obligor | EDFR KOWEPO AJBAN HOLDING LIMITED |  | EDFR KOWEPO AJBAN HOLDING LIMITED |  | EDFR KOWEPO AJBAN HOLDING LIMITED |  | EDFR KOWEPO AJBAN HOLDING LIMITED |
Amount of guarantees | $ | $ 57,090 |  |  |  |  |  |  |
Name of Guarantee | FAB |  | FAB |  | FAB |  | FAB |
Loan payment guarantee 3 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea East-West Power Co., Ltd. | [14] | Korea East-West Power Co., Ltd. | [14] | Korea East-West Power Co., Ltd. | [14] | Korea East-West Power Co., Ltd. | [14]
Name of Principal obligor | Amaala Sustaninable Company for Energy LLC | [14] | Amaala Sustaninable Company for Energy LLC | [14] | Amaala Sustaninable Company for Energy LLC | [14] | Amaala Sustaninable Company for Energy LLC | [14]
Amount of guarantees | $ | $ 38,054 | [14] |  |  |  |  |  |
Name of Guarantee | FAB | [14] | FAB | [14] | FAB | [14] | FAB | [14]
Debt guarantees 7 |  |  |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |  |  |
Name of Primary guarantor | Korea South-East Power Co., Ltd. | [15] | Korea South-East Power Co., Ltd. | [15] | Korea South-East Power Co., Ltd. | [15] | Korea South-East Power Co., Ltd. | [15]
Name of Principal obligor | Santiago Solar Power SpA | [15] | Santiago Solar Power SpA | [15] | Santiago Solar Power SpA | [15] | Santiago Solar Power SpA | [15]
Amount of guarantees | $ | $ 8,000 | [15] |  |  |  |  |  |
Name of Guarantee | Nonghyup Bank and others | [15] | Nonghyup Bank and others | [15] | Nonghyup Bank and others | [15] | Nonghyup Bank and others | [15]
[1] | The credit limits of guarantees to RE Holiday Holdings LLC include the credit limits of guarantees to their subsidiaries.
[2] | The payment guarantee related to the gas combined cycle power project of South Jamaica Power Company Limited, a joint venture of the Company.
[3] | The Company, together with other shareholders, has provided a guarantee for the project financing of Pulau Indah Power Plant Sdn. Bhd., by establishing the right of pledge on the shares of Pulau Indah Power Plant Sdn. Bhd. As of December 31, 2024, the book value of the securities is ￦50,721 million.
[4] | The Company guarantees to provide supplemental funding for business with respect to excessive business expenses or insufficient repayment of borrowings.
[5] | The common stocks of Dongducheon Dream Power Co., Ltd. held by the Company were pledged as collateral.
[6] | The Company provided a payment guarantee to Chile Kelar project for opening L/C for Debt Service Reserve Account (DSRA), and others.
[7] | The Company provided a payment guarantee to Jordan Tafila wind power project for opening L/C for Debt Service Reserve Account (DSRA).
[8] | The Company has entered into an agreement prescribing the settlement of the estimated loss in case damages occur related to the fulfillment of the mandatory supply volume according to the mandatory supply agreement for coal ash.
[9] | Samcheok Eco Materials Co., Ltd., a joint venture of the Company has issued the hybrid bonds. If the bonds are not repaid by December 8, 2026, the parent company and shareholders except the parent company must purchase the bonds from the acquirer. As of December 31, 2024, derivative liabilities of ￦26,422 million were recognized in relation to this obligation.
[10] | The credit limits of guarantees to KAS INVESTMENT I LLC, KAS INVESTMENT II LLC include the credit limits of guarantees to their subsidiaries.
[11] | The Company recognized an impairment loss on all of the equity securities of Boim Combined Heat and Power Generation Co., Ltd. before the prior year, and the acquisition cost of the securities provided as collateral is ￦47,067 million.
[12] | Pursuant to the guarantee agreement, the Company recognized other provisions of ￦11,804 million as the possibility of economic benefit outflow to fulfill the obligation was deemed probable and the amount could be reasonably estimated.
[13] | Xe-Pian Xe-Namnoy Power Co., Ltd., an associate of the Company, has entered a contract to pay an incentive type of impounding bonus to SK Eco Plant Co., Ltd. when the Xe-Pian Xe-Namnoy Dam is completed. If Xe-Pian Xe-Namnoy Power Co., Ltd. fails to pay SK Eco Plant Co., Ltd., the Company guarantees the payment, and the amount is USD 5,000 thousand
[14] | The Company provided an EBL payment and EBL hedging guarantee to Amaala Sustainable Company for Energy LLC, an associate of the Company.
[15] | The Company has issued a guaranteed letter of credit in the amount of USD 8,000 thousand under the interlender loan agreement with Santiago Solar Power SpA.

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