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Guarantees provided between the related parties (Details) ر.س in Thousands, RM in Thousands, $ in Thousands, ₩ in Millions | 12 Months Ended
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Dec. 31, 2020 KRW (₩) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 SAR (ر.س) | Dec. 31, 2020 MYR (RM)
Performance guarantees |  |  |  |  |  |
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 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.
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 |  |  |
Performance guarantees and others |  |  |  |  |  |
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 Guarantee | Rabigh Electricity Company |  | Rabigh Electricity Company |  | Rabigh Electricity Company | Rabigh Electricity Company
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 |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | SMBC Ho Chi Minh and others |  | SMBC Ho Chi Minh and others |  | SMBC Ho Chi Minh and others | SMBC Ho Chi Minh and others
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 | $ |  |  | $ 70,000 |  |  |
Debt guarantees |  |  |  |  |  |
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 Guarantee | SMBC Singapore |  | SMBC Singapore |  | SMBC Singapore | SMBC Singapore
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 | $ |  |  | $ 285,000 |  |  |
Debt guarantees |  |  |  |  |  |
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 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
Name of Principal obligor | Barakah One Company |  | Barakah One Company |  | Barakah One Company | Barakah One Company
Amount of guarantees | $ |  |  | $ 900,000 |  |  |
Performance guarantees and others |  |  |  |  |  |
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 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
Name of Principal obligor | Barakah One Company |  | Barakah One Company |  | Barakah One Company | Barakah One Company
Amount of guarantees | $ |  |  | $ 4,439,920 |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | EPS Renewables Holdings, LLC, Santander Bank and others |  | EPS Renewables Holdings, LLC, Santander Bank and others |  | EPS Renewables Holdings, LLC, Santander Bank and others | EPS Renewables Holdings, LLC, Santander Bank and others
Name of Principal obligor | RE Holiday Holdings LLC |  | RE Holiday Holdings LLC |  | RE Holiday Holdings LLC | RE Holiday Holdings LLC
Amount of guarantees | $ |  |  | $ 206,494 | [1] |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | EPS Renewables Holdings, LLC, Santander Bank and others |  | EPS Renewables Holdings, LLC, Santander Bank and others |  | EPS Renewables Holdings, LLC, Santander Bank and others | EPS Renewables Holdings, LLC, Santander Bank and others
Name of Principal obligor | RE Pioneer Holdings LLC |  | RE Pioneer Holdings LLC |  | RE Pioneer Holdings LLC | RE Pioneer Holdings LLC
Amount of guarantees | $ |  |  | $ 158,718 |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Firstar Development, LLC, Santander Bank and others |  | Firstar Development, LLC, Santander Bank and others |  | Firstar Development, LLC, Santander Bank and others | Firstar Development, LLC, Santander Bank and others
Name of Principal obligor | RE Barren Ridge 1 Holdings LLC |  | RE Barren Ridge 1 Holdings LLC |  | RE Barren Ridge 1 Holdings LLC | RE Barren Ridge 1 Holdings LLC
Amount of guarantees | $ |  |  | $ 135,783 | [1] |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank | Hana Bank
Name of Principal obligor | Rabigh Electricity Company |  | Rabigh Electricity Company |  | Rabigh Electricity Company | Rabigh Electricity Company
Amount of guarantees | ر.س |  |  |  |  | ر.س 6,508 |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank | Hana Bank
Name of Principal obligor | Rabigh Electricity Company |  | Rabigh Electricity Company |  | Rabigh Electricity Company | Rabigh Electricity Company
Amount of guarantees | ر.س |  |  |  |  | ر.س 68,054 |
Performance guarantees |  |  |  |  |  |
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 Guarantee | ING Bank |  | ING Bank |  | ING Bank | ING Bank
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 | $ |  |  | $ 100,000 |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank | Shinhan Bank
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 | $ |  |  | $ 16,800 |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Maybank |  | Maybank |  | Maybank | Maybank
Name of Principal obligor | Pulau Indah Power Plant Sdn. Bhd. |  | Pulau Indah Power Plant Sdn. Bhd. |  | Pulau Indah Power Plant Sdn. Bhd. | Pulau Indah Power Plant Sdn. Bhd.
Amount of guarantees | RM |  |  |  |  |  | RM 7,500
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
Name of Principal obligor | Cheongna Energy Co., Ltd. |  | Cheongna Energy Co., Ltd. |  | Cheongna Energy Co., Ltd. | Cheongna Energy Co., Ltd.
Amount of guarantees | ₩ 4,940 |  |  |  |  |
Guarantees for supplemental funding and others |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
Name of Principal obligor | Cheongna Energy Co., Ltd. |  | Cheongna Energy Co., Ltd. |  | Cheongna Energy Co., Ltd. | Cheongna Energy Co., Ltd.
Amount of guarantees | ₩ 0 | [2] |  |  |  |
Payment guarantees for business reserve |  |  |  |  |  |
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 Guarantee | Krung Thai Bank |  | Krung Thai Bank |  | Krung Thai Bank | Krung Thai Bank
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 | $ |  |  | $ 2,500 |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Krung Thai Bank |  | Krung Thai Bank |  | Krung Thai Bank | Krung Thai Bank
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 | ₩ 64,570 |  |  |  |  |
Impounding bonus guarantees |  |  |  |  |  |
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 Guarantee | SK E&C |  | SK E&C |  | SK E&C | SK E&C
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 | $ |  |  | $ 5,000 |  |  |
Performance guarantees and others |  |  |  |  |  |
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 Guarantee | National Bank of Kuwait |  | National Bank of Kuwait |  | National Bank of Kuwait | National Bank of Kuwait
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 |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Korea Development Bank |  | Korea Development Bank |  | Korea Development Bank | Korea Development Bank
Name of Principal obligor | Daegu Photovoltaic Co., Ltd. |  | Daegu Photovoltaic Co., Ltd. |  | Daegu Photovoltaic Co., Ltd. | Daegu Photovoltaic Co., Ltd.
Amount of guarantees | ₩ 2,066 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
Name of Principal obligor | Dongducheon Dream Power Co., Ltd. |  | Dongducheon Dream Power Co., Ltd. |  | Dongducheon Dream Power Co., Ltd. | Dongducheon Dream Power Co., Ltd.
Amount of guarantees | ₩ 45,041 | [3] |  |  |  |
Debt guarantees |  |  |  |  |  |
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 Guarantee | BNK Securities |  | BNK Securities |  | BNK Securities | BNK Securities
Name of Principal obligor | Dongducheon Dream Power Co., Ltd. |  | Dongducheon Dream Power Co., Ltd. |  | Dongducheon Dream Power Co., Ltd. | Dongducheon Dream Power Co., Ltd.
Amount of guarantees | ₩ 20,300 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Woori Bank |  | Woori Bank |  | Woori Bank | Woori Bank
Name of Principal obligor | PT. Mutiara Jawa |  | PT. Mutiara Jawa |  | PT. Mutiara Jawa | PT. Mutiara Jawa
Amount of guarantees | ₩ 1,780 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank | Nonghyup Bank
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 | ₩ 210 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank |  | Kookmin Bank |  | Kookmin Bank | Kookmin Bank
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 | ₩ 69,591 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
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 | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Nonghyup Bank |  | Nonghyup Bank |  | Nonghyup Bank | Nonghyup Bank
Name of Principal obligor | Haemodum Solar Co., Ltd. |  | Haemodum Solar Co., Ltd. |  | Haemodum Solar Co., Ltd. | Haemodum Solar Co., Ltd.
Amount of guarantees | ₩ 3,065 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
Name of Principal obligor | Sam-Yang Photovoltaic Power Co., Ltd. |  | Sam-Yang Photovoltaic Power Co., Ltd. |  | Sam-Yang Photovoltaic Power Co., Ltd. | Sam-Yang Photovoltaic Power Co., Ltd.
Amount of guarantees | ₩ 5,535 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
Name of Principal obligor | Sam-Yang Photovoltaic Power Co., Ltd. |  | Sam-Yang Photovoltaic Power Co., Ltd. |  | Sam-Yang Photovoltaic Power Co., Ltd. | Sam-Yang Photovoltaic Power Co., Ltd.
Amount of guarantees | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | ₩ 4,180 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others | Hana Bank and others
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 | ₩ 5,510 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others | Hana Bank and others
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 | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
Name of Principal obligor | Busan Shinho Solar Power Co., Ltd. |  | Busan Shinho Solar Power Co., Ltd. |  | Busan Shinho Solar Power Co., Ltd. | Busan Shinho Solar Power Co., Ltd.
Amount of guarantees | ₩ 5,378 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
Name of Principal obligor | Seokmun Energy Co., Ltd. |  | Seokmun Energy Co., Ltd. |  | Seokmun Energy Co., Ltd. | Seokmun Energy Co., Ltd.
Amount of guarantees | ₩ 14,814 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
Name of Principal obligor | Seokmun Energy Co., Ltd. |  | Seokmun Energy Co., Ltd. |  | Seokmun Energy Co., Ltd. | Seokmun Energy Co., Ltd.
Amount of guarantees | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
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 | ₩ 27,518 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
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 | ₩ 90,800 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
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 | ₩ 3,887 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
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 | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
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 | ₩ 244,426 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
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 | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
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 | ₩ 3,124 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | KDB Capital Corporation and others |  | KDB Capital Corporation and others |  | KDB Capital Corporation and others | KDB Capital Corporation and others
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 | ₩ 17,256 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | KDB Capital Corporation and others |  | KDB Capital Corporation and others |  | KDB Capital Corporation and others | KDB Capital Corporation and others
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 | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 22,552 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 18,989 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Samsung Fire & Marine Insurance Co., Ltd. and others |  | Samsung Fire & Marine Insurance Co., Ltd. and others |  | Samsung Fire & Marine Insurance Co., Ltd. and others | Samsung Fire & Marine Insurance Co., Ltd. and others
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 | ₩ 13,362 |  |  |  |  |
Debt guarantees |  |  |  |  |  |
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 Guarantee | Sumitomo mitsui banking |  | Sumitomo mitsui banking |  | Sumitomo mitsui banking | Sumitomo mitsui banking
Name of Principal obligor | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia | PT. Tanjung Power Indonesia
Amount of guarantees | $ |  |  | $ 24,544 |  |  |
Other guarantees |  |  |  |  |  |
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 Guarantee | PT Adaro Indonesia |  | PT Adaro Indonesia |  | PT Adaro Indonesia | PT Adaro Indonesia
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 |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Sumitomo mitsui banking and others |  | Sumitomo mitsui banking and others |  | Sumitomo mitsui banking and others | Sumitomo mitsui banking and others
Name of Principal obligor | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia | PT. Tanjung Power Indonesia
Amount of guarantees | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | MUFG and others |  | MUFG and others |  | MUFG and others | MUFG and others
Name of Principal obligor | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia |  | PT. Tanjung Power Indonesia | PT. Tanjung Power Indonesia
Amount of guarantees | ₩ 33,063 |  |  |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Societe Generale |  | Societe Generale |  | Societe Generale | Societe Generale
Name of Principal obligor | South Jamaica Power Company Limited |  | South Jamaica Power Company Limited |  | South Jamaica Power Company Limited | South Jamaica Power Company Limited
Amount of guarantees | $ |  |  | $ 14,400 |  |  |
Collateralized money invested |  |  |  |  |  |
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 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
Name of Principal obligor | South Jamaica Power Company Limited |  | South Jamaica Power Company Limited |  | South Jamaica Power Company Limited | South Jamaica Power Company Limited
Amount of guarantees | ₩ 31,897 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |
Name of Primary guarantor | EWP Barbados 1 SRL |  | EWP Barbados 1 SRL |  | EWP Barbados 1 SRL | EWP Barbados 1 SRL
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
Name of Principal obligor | South Jamaica Power Company Limited |  | South Jamaica Power Company Limited |  | South Jamaica Power Company Limited | South Jamaica Power Company Limited
Amount of guarantees | ₩ 0 | [2],[4] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Mirae Asset Daewoo Co., Ltd. and others |  | Mirae Asset Daewoo Co., Ltd. and others |  | Mirae Asset Daewoo Co., Ltd. and others | Mirae Asset Daewoo Co., Ltd. and others
Name of Principal obligor | DE Energia SpA |  | DE Energia SpA |  | DE Energia SpA | DE Energia SpA
Amount of guarantees | ₩ 8,187 |  |  |  |  |
Debt guarantees |  |  |  |  |  |
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 Guarantee | Mirae Asset Daewoo Co., Ltd. and others |  | Mirae Asset Daewoo Co., Ltd. and others |  | Mirae Asset Daewoo Co., Ltd. and others | Mirae Asset Daewoo Co., Ltd. and others
Name of Principal obligor | DE Energia SpA |  | DE Energia SpA |  | DE Energia SpA | DE Energia SpA
Amount of guarantees | $ |  |  | $ 5,728 |  |  |
Payment guarantees |  |  |  |  |  |
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 Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank | Hana Bank
Name of Principal obligor | DE Energia SpA |  | DE Energia SpA |  | DE Energia SpA | DE Energia SpA
Amount of guarantees | $ |  |  | $ 1,066 | [5] |  |
Collateralized money invested |  |  |  |  |  |
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 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
Name of Principal obligor | Bitsolar Energy Co., Ltd. |  | Bitsolar Energy Co., Ltd. |  | Bitsolar Energy Co., Ltd. | Bitsolar Energy Co., Ltd.
Amount of guarantees | ₩ 352 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
Name of Principal obligor | KNH Solar Co., Ltd. |  | KNH Solar Co., Ltd. |  | KNH Solar Co., Ltd. | KNH Solar Co., Ltd.
Amount of guarantees | ₩ 2,436 |  |  |  |  |
Performance guarantees and guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
Name of Principal obligor | KNH Solar Co., Ltd. |  | KNH Solar Co., Ltd. |  | KNH Solar Co., Ltd. | KNH Solar Co., Ltd.
Amount of guarantees | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
Name of Principal obligor | Daeryun Power Co., Ltd. |  | Daeryun Power Co., Ltd. |  | Daeryun Power Co., Ltd. | Daeryun Power Co., Ltd.
Amount of guarantees | ₩ 26,353 |  |  |  |  |
Guarantees for supplemental funding and others |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
Name of Principal obligor | Daeryun Power Co., Ltd. |  | Daeryun Power Co., Ltd. |  | Daeryun Power Co., Ltd. | Daeryun Power Co., Ltd.
Amount of guarantees | ₩ 8,000 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
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 | ₩ 23,045 |  |  |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
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 | ₩ 0 |  |  |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Hana Bank, MUFG |  | Hana Bank, MUFG |  | Hana Bank, MUFG | Hana Bank, MUFG
Name of Principal obligor | Kelar S.A |  | Kelar S.A |  | Kelar S.A | Kelar S.A
Amount of guarantees | $ |  |  | $ 57,987 |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank | Shinhan Bank
Name of Principal obligor | Daehan Wind Power PSC |  | Daehan Wind Power PSC |  | Daehan Wind Power PSC | Daehan Wind Power PSC
Amount of guarantees | $ |  |  | $ 3,600 |  |  |
Payment guarantees |  |  |  |  |  |
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 Guarantee | Hana Bank |  | Hana Bank |  | Hana Bank | Hana Bank
Name of Principal obligor | Daehan Wind Power PSC |  | Daehan Wind Power PSC |  | Daehan Wind Power PSC | Daehan Wind Power PSC
Amount of guarantees | $ |  |  | $ 1,898 | [6] |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Woori Bank and Shinhan Bank and others |  | Woori Bank and Shinhan Bank and others |  | Woori Bank and Shinhan Bank and others | Woori Bank and Shinhan Bank and others
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 | ₩ 5,027 |  |  |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | Woori Bank and Shinhan Bank and others |  | Woori Bank and Shinhan Bank and others |  | Woori Bank and Shinhan Bank and others | Woori Bank and Shinhan Bank and others
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 | ₩ 0 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 3,087 |  |  |  |  |
Performance guarantees |  |  |  |  |  |
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 Guarantee | SK Securities.Co., LTD., KDB Capital Corporation, and others |  | SK Securities.Co., LTD., KDB Capital Corporation, and others |  | SK Securities.Co., LTD., KDB Capital Corporation, and others | SK Securities.Co., LTD., KDB Capital Corporation, and others
Name of Principal obligor | Jeongam Wind Power Co., Ltd. |  | Jeongam Wind Power Co., Ltd. |  | Jeongam Wind Power Co., Ltd. | Jeongam Wind Power Co., Ltd.
Amount of guarantees | ₩ 0 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | SK Securities.Co., LTD., KDB Capital Corporation, and others |  | SK Securities.Co., LTD., KDB Capital Corporation, and others |  | SK Securities.Co., LTD., KDB Capital Corporation, and others | SK Securities.Co., LTD., KDB Capital Corporation, and others
Name of Principal obligor | Jeongam Wind Power Co., Ltd. |  | Jeongam Wind Power Co., Ltd. |  | Jeongam Wind Power Co., Ltd. | Jeongam Wind Power Co., Ltd.
Amount of guarantees | ₩ 4,620 |  |  |  |  |
Payment guarantees |  |  |  |  |  |
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 Guarantee | SEM Investment Co., Ltd. |  | SEM Investment Co., Ltd. |  | SEM Investment Co., Ltd. | SEM Investment Co., Ltd.
Name of Principal obligor | Samcheok Eco Materials Co., Ltd. |  | Samcheok Eco Materials Co., Ltd. |  | Samcheok Eco Materials Co., Ltd. | Samcheok Eco Materials Co., Ltd.
Amount of guarantees | ₩ 0 | [7] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
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 | ₩ 7,379 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | ₩ 0 | [8] |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | ₩ 30,000 | [2] |  |  |  |
Guarantees for other supplemental funding and performance guarantees |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 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
Name of Principal obligor | Kelar S.A. |  | Kelar S.A. |  | Kelar S.A. | Kelar S.A.
Amount of guarantees | ₩ 71,449 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | Chester Solar I SpA |  | Chester Solar I SpA |  | Chester Solar I SpA | Chester Solar I SpA
Amount of guarantees | ₩ 1,621 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | Chester Solar IV SpA |  | Chester Solar IV SpA |  | Chester Solar IV SpA | Chester Solar IV SpA
Amount of guarantees | ₩ 1,064 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | Chester Solar V SpA |  | Chester Solar V SpA |  | Chester Solar V SpA | Chester Solar V SpA
Amount of guarantees | ₩ 277 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 1,490 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | Laurel SpA |  | Laurel SpA |  | Laurel SpA | Laurel SpA
Amount of guarantees | ₩ 1,092 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | ₩ 312 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
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 | ₩ 132,774 |  |  |  |  |
Debt guarantees |  |  |  |  |  |
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 Guarantee | Mizuho Bank |  | Mizuho Bank |  | Mizuho Bank | Mizuho Bank
Name of Principal obligor | PT. Cirebon Electric Power |  | PT. Cirebon Electric Power |  | PT. Cirebon Electric Power | PT. Cirebon Electric Power
Amount of guarantees | $ |  |  | $ 10,038 |  |  |
Debt guarantees |  |  |  |  |  |
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 Guarantee | SMBC |  | SMBC |  | SMBC | SMBC
Name of Principal obligor | PT Wampu Electric Power |  | PT Wampu Electric Power |  | PT Wampu Electric Power | PT Wampu Electric Power
Amount of guarantees | $ |  |  | $ 5,271 |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 25 |  |  |  |  |
Guarantees for supplemental funding and others |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | Yaksu ESS Co., Ltd |  | Yaksu ESS Co., Ltd |  | Yaksu ESS Co., Ltd | Yaksu ESS Co., Ltd
Amount of guarantees | ₩ 454 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | Namjeongsusang Solar Power Operatin Co., Ltd. |  | Namjeongsusang Solar Power Operatin Co., Ltd. |  | Namjeongsusang Solar Power Operatin Co., Ltd. | Namjeongsusang Solar Power Operatin Co., Ltd.
Amount of guarantees | ₩ 103 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 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
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 | ₩ 4,682 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 1,096 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 1,684 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | ₩ 29 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | IBK and others |  | IBK and others |  | IBK and others | IBK and others
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 | ₩ 0 | [2] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) |  | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) |  | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.)
Amount of guarantees | ₩ 0 | [9] |  |  |  |
Guarantees for supplemental funding and others |  |  |  |  |  |
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 Guarantee | NH investment & securities Co., Ltd. and others |  | NH investment & securities Co., Ltd. and others |  | NH investment & securities Co., Ltd. and others | NH investment & securities Co., Ltd. and others
Name of Principal obligor | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) |  | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) |  | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) | DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.)
Amount of guarantees | ₩ 76,800 | [2],[10] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Korea Development Bank and others |  | Korea Development Bank and others |  | Korea Development Bank and others | Korea Development Bank and others
Name of Principal obligor | S-Power Co., Ltd. |  | S-Power Co., Ltd. |  | S-Power Co., Ltd. | S-Power Co., Ltd.
Amount of guarantees | ₩ 110,292 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | UniCredit Bulbank and others |  | UniCredit Bulbank and others |  | UniCredit Bulbank and others | UniCredit Bulbank and others
Name of Principal obligor | RES Technology AD |  | RES Technology AD |  | RES Technology AD | RES Technology AD
Amount of guarantees | ₩ 15,930 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | UniCredit Bulbank and others |  | UniCredit Bulbank and others |  | UniCredit Bulbank and others | UniCredit Bulbank and others
Name of Principal obligor | ASM-BG Investicii AD |  | ASM-BG Investicii AD |  | ASM-BG Investicii AD | ASM-BG Investicii AD
Amount of guarantees | ₩ 18,200 |  |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
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 Guarantee | Woori Bank |  | Woori Bank |  | Woori Bank | Woori Bank
Name of Principal obligor | Expressway Solar-light Power Generation Co., Ltd. |  | Expressway Solar-light Power Generation Co., Ltd. |  | Expressway Solar-light Power Generation Co., Ltd. | Expressway Solar-light Power Generation Co., Ltd.
Amount of guarantees | ₩ 2,500 | [2],[11] |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 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
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 | ₩ 2,186 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 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
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 | ₩ 2,368 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
Name of Principal obligor | PND solar Co., Ltd. |  | PND solar Co., Ltd. |  | PND solar Co., Ltd. | PND solar Co., Ltd.
Amount of guarantees | ₩ 1,149 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Samsung Life Insurance and others |  | Samsung Life Insurance and others |  | Samsung Life Insurance and others | Samsung Life Insurance and others
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 | ₩ 4,250 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | IBK |  | IBK |  | IBK | IBK
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 | ₩ 2,195 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 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
Name of Principal obligor | Cheongsong Myeonbongsan Wind Power Plant Co., Ltd. |  | Cheongsong Myeonbongsan Wind Power Plant Co., Ltd. |  | Cheongsong Myeonbongsan Wind Power Plant Co., Ltd. | Cheongsong Myeonbongsan Wind Power Plant Co., Ltd.
Amount of guarantees | ₩ 4,124 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Kookmin Bank and others |  | Kookmin Bank and others |  | Kookmin Bank and others | Kookmin Bank and others
Name of Principal obligor | Youngam Solar Power Co., Ltd. |  | Youngam Solar Power Co., Ltd. |  | Youngam Solar Power Co., Ltd. | Youngam Solar Power Co., Ltd.
Amount of guarantees | ₩ 6,042 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
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 | ₩ 2,607 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others | Woori Bank and others
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 | ₩ 11,022 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Hana Bank and others |  | Hana Bank and others |  | Hana Bank and others | Hana Bank and others
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 | ₩ 4,197 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Shinhan Bank and others |  | Shinhan Bank and others |  | Shinhan Bank and others | Shinhan Bank and others
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 | ₩ 8,778 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
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 Guarantee | Woori Bank and others |  | Woori Bank and others |  | Woori Bank and others | Woori Bank and others
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 | ₩ 3,453 |  |  |  |  |
Collateralized money invested |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |
Name of Primary guarantor | KEPCO Plant Service & Engineering Co., Ltd. |  | KEPCO Plant Service & Engineering Co., Ltd. |  | KEPCO Plant Service & Engineering Co., Ltd. | KEPCO Plant Service & Engineering Co., Ltd.
Name of Guarantee | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank | Shinhan Bank
Name of Principal obligor | Incheon New Power Co., Ltd. |  | Incheon New Power Co., Ltd. |  | Incheon New Power Co., Ltd. | Incheon New Power Co., Ltd.
Amount of guarantees | ₩ 0 | [12] |  |  |  |
Guarantees for supplemental funding |  |  |  |  |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |  |  |  |  |
Name of Primary guarantor | KEPCO Plant Service & Engineering Co., Ltd. |  | KEPCO Plant Service & Engineering Co., Ltd. |  | KEPCO Plant Service & Engineering Co., Ltd. | KEPCO Plant Service & Engineering Co., Ltd.
Name of Guarantee | Shinhan Bank |  | Shinhan Bank |  | Shinhan Bank | Shinhan Bank
Name of Principal obligor | Incheon New Power Co., Ltd. |  | Incheon New Power Co., Ltd. |  | Incheon New Power Co., Ltd. | Incheon New Power Co., Ltd.
Amount of guarantees | ₩ 0 | [2] |  |  |  |
[1] | The credit limits of guarantees to RE Holiday Holdings LLC and RE Barren Ridge 1 Holdings LLC include the credit limits of guarantees to their subsidiaries.
[2] | The Company guarantees to provide supplemental funding for business with respect to excessive business expenses or insufficient repayment of borrowings.
[3] | The common stocks of Dongducheon Dream Power Co., Ltd. held by the Company were pledged as collateral.
[4] | This includes a guarantee for the shareholder's capital payment in connection with the business of 190MW gas complex thermal power plant in Jamaica. EWP Barbados 1 SRL's capital contribution amount is USD 18,400 thousand and there is no residual guarantee amount among total collateral limit.
[5] | This includes a guarantee related to LC for debt repayment allowance provided to DE Energia SpA, a joint venture of the Company.
[6] | The Company provided a payment guarantee to Daehan Wind Power PSC for opening LC for Debt Service Reserve Account (DSRA).
[7] | Controlling and non-controlling common shareholders of Samcheok Eco Materials Co., Ltd. have pre-emption rights, if preferred shareholders intend to sell their shares until December 26, 2023. The promised yield of the preferred stock is guaranteed through the transaction. As of December 31, 2020, the Company has recognized derivative liabilities of KRW6,760 million related to the guarantee. Meanwhile, the Company is under an agreement with Samcheok Eco Materials Co., Ltd. that if a damage incurs related to the fulfillment of obligations pursuant to the mandatory contract of coal ash supply, compensation for the expected amount of the damage should be settled.
[8] | The Company recognized an impairment loss on all of the equity securities of Naepo Green Energy Co., Ltd. before the prior year, and the acquisition cost of the securities provided as collateral is KRW29,200 million.
[9] | The Company recognized an impairment loss on all of the equity securities of DAYONE Energy Co., Ltd. (formerly, Hyundai Energy Co., Ltd.) before the prior year, and the acquisition cost of the securities provided as collateral is KRW47,067 million.
[10] | Pursuant to the guarantee agreement, the Company recognized other provisions of KRW26,772 million as the possibility of economic benefit outflow to fulfill the obligation was deemed probable and the amount could be reasonably estimated.
[11] | The Company has granted the right to Hana Financial Investment Co., Ltd., as an agent for the creditors to Expressway Solar-light Power Generation Co., Ltd. ("ESPG"), to the effect that in the event of acceleration of ESPG's payment obligations under certain borrowings to such creditors, Hana Financial may demand the Company to dispose of shares in ESPG held by the Company and apply the resulting proceeds to repayment of ESPG's obligations.
[12] | The Company recognized an impairment loss on all of the equity securities of Incheon New Power Co., Ltd. during the year ended December 31, 2019, and the acquisition cost of the securities provided as collateral is W461 million.

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