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Related Parties

12 Months Ended

Dec. 31, 2024

Disclosure of transactions between related parties [abstract]

Related Parties

47. Related Parties

(1) Related parties of the Company as of December 31, 2024 are as follows:

Type		Related party
Parent		Republic of Korea government
Subsidiaries (167 subsidiaries)		Korea Hydro & Nuclear Power Co., Ltd., Korea South-East Power Co., Ltd., Korea Midland Power Co., Ltd., Korea Western Power Co., Ltd., Korea Southern Power Co., Ltd., Korea East-West Power Co., Ltd., KEPCO Engineering & Construction Company, Inc., KEPCO Plant Service & Engineering Co., Ltd., KEPCO Nuclear Fuel Co., Ltd., KEPCO KDN Co., Ltd., Gyeonggi Green Energy Co., Ltd., Korea Offshore Wind Power Co., Ltd., KOSEP Material Co., Ltd., KEPCO International HongKong Ltd., KEPCO International Philippines Inc., KEPCO Philippines Corporation, KEPCO Ilijan Corporation, KEPCO Gansu International Ltd., KEPCO Philippines Holdings Inc., KEPCO Neimenggu International Ltd., KEPCO Australia Pty., Ltd., KEPCO Shanxi International Ltd., KOMIPO Global Pte Ltd., KOSEP Australia Pty., Ltd., KOMIPO Australia Pty., Ltd., KOWEPO Australia Pty., Ltd., KOSPO Australia Pty., Ltd., KEPCO Netherlands B.V., KEPCO Middle East Holding Company, Qatrana Electric Power Company, KOWEPO International Corporation, KOSPO Jordan LLC, Korea Waterbury Uranium Limited Partnership, PT. Cirebon Power Service, EWP America Inc., KHNP Canada Energy Ltd., KEPCO Bylong Australia Pty., Ltd., KNF Canada Energy Limited, KEPCO Holdings de Mexico, KST Electric Power Company, S.A.P.I. de C.V., KEPCO Energy Service Company, KEPCO Netherlands S3 B.V., PT. KOMIPO Pembangkitan Jawa Bali, EWP Barbados 1 SRL, PT. Tanggamus Electric Power, KOMIPO America Inc., PT. EWP Indonesia, KEPCO Netherlands J3 B.V., Global One Pioneer B.V., Global Energy Pioneer B.V., Mira Power Limited, KEPCO KPS Philippines Corp., KOSPO Chile SpA, Commerce and Industry Energy Co., Ltd., Gyeongju Wind Power Co., Ltd., California Power Holdings, LLC, EWP Renewable Corporation, Hee Mang Sunlight Power Co., Ltd., Fujeij Wind Power Company, KOSPO Youngnam Power Co., Ltd., Chitose Solar Power Plant LLC., KEPCO Solar Co., Ltd., KEPCO ES Co., Ltd., KOSPO Power Services Ltda., KOEN Bylong Pty., Ltd., KOWEPO Bylong Pty., Ltd., KOSPO Bylong Pty., Ltd., EWP Bylong Pty., Ltd., KOWEPO Lao International, KOMIPO Bylong Pty., Ltd., Energy New Industry Specialized Investment Private Investment Trust., KEPCO Mangilao Holdings LLC, Mangilao Investment LLC, KEPCO Mangilao Solar, LLC, Jeju Hanlim Offshore Wind Co., Ltd., PT. Siborpa Eco Power, e-New Industry LB Fund 1, Songhyun e-New Industry Fund, BSK E-New Industry Fund VII, PT. Korea Energy Indonesia, KOLAT SpA, KEPCO California, LLC, KEPCO Mojave Holdings, LLC, Incheon Fuel Cell Co., Ltd., KOEN Service Co., Ltd., KOMIPO Service Co., Ltd., KOWEPO Service Co., Ltd., KOSPO Service Co., Ltd., EWP Service Co., Ltd., PT. KOMIPO Energy Indonesia, KNF Partners Co., Ltd., KOSPO USA Inc., KOSPO Niles LLC (formerly, Nambu USA LLC), Tamra Offshore Wind Power Co., Ltd., KEPCO MCS Co., Ltd., KEPCO FMS Co., Ltd., Firstkeepers Co., Ltd., Secutec Co., Ltd., SE Green Energy Co., Ltd., Mangilao Intermediate Holdings LLC, KEPCO CSC Co., Ltd., KOAK Power Limited, KOMIPO Europe B.V., Haenanum Energy Fund, Paju Ecoenergy Co., Ltd., Guam Ukudu Power LLC, K-SOLAR SHINAN Co., Ltd., KPS Partners Co., Ltd., KEPCO E&C Service Co., Ltd., Moha solar Co., Ltd., KHNP USA LLC, KOMIPO Vanphong Power Service LLC, Ogiri Solar Power Co., Ltd., BSK E-New Industry Fund X, Energy Innovation Fund I, KHNP Chile SpA, Yeong Yang Apollon Photovoltaic Co., Ltd., Yeong Yang Corporation Co., Ltd., SolarVader Co., Ltd., Yeong Yang Innovation Co., Ltd., Yeong Yang Horus Photovoltaic Co., Ltd., Yeong Yang Solar Management Co., Ltd., LSG Hydro Power Limited, KOEN Bio Co., Ltd., KOMIPO Energy Solution America, LLC, Elara Investment Holdings, LLC, Elara Equity Holdings, LLC, Elara Class B Holdings, LLC, Elara Class B Member, LLC, Elara Development Holdings, LLC, KOMIPO Development, LLC, Elara Energy Holdings, LLC, Elara Energy Project, LLC, KOMIPO Iberian Solar Group, S.L.U., KOWEPO Europe B.V., CVS Equity Holdings, LLC, CVS Class B Holdings, LLC, CVS Development Holdings, LLC, CVS Development, LLC, CVS Class B Member, LLC, CVS Energy Holdings, LLC, Concho Valley Energy, LLC, Concho Valley Solar, LLC, Jeongam Wind Power Co., Ltd., Yeongdeok Sunrise Wind Power Co., Ltd., UI Carbon-Neutrality Fund, KA Power Limited, Western Power Changgi Solar Co., Ltd., Digital Innovation Growth Fund, EWP Australia Pty., Ltd., Columboola Solar Farm Hold Co Pty., Ltd., J Wind First, LLC, KEPCO Holding Company, KEPCO for Maintenance Company, KOSPO Trumbull LLC, Changjuk Wind Power Co., Ltd., KEPCO KPS South Africa Pty., Ltd., Chile Solar JV SpA, KOWEPO Holding Limited, Columboola Solar Farm Nominees Pty., Ltd., Columboola Solar Farm Op Trust, Columboola Solar Farm Fin Co Pty., Ltd., Magna Energy New Industrial Fund, EWP ESS Holdings, LLC, Fairhaven ESS LLC, KOSPO Rutile, LLC, Sprott Chile Solar I SpA

Type		Related party
Associates (98 entities)		Dongducheon Dream Power Co., Ltd., Korea Gas Corporation, Daegu Photovoltaic Co., Ltd., Haeng Bok Do Si Photovoltaic Power Co., Ltd., Korea Electric Power Industrial Development Co., Ltd., Goseong Green Power Co., Ltd., Gangneung Eco Power Co., Ltd., Shin Pyeongtaek Power Co., Ltd., Noeul Green Energy Co., Ltd., Gangwon Wind Power Co., Ltd., Gwangyang Green Energy Co., Ltd., Hyundai Green Power Co., Ltd., Korea Power Exchange, Taebaek Guinemi Wind Power Co., Ltd., Daeryun Power Co., Ltd., KNH Solar Co., Ltd., S-Power Co., Ltd., SPC Power Corporation, Gemeng International Energy Co., Ltd., PT. Cirebon Electric Power, KNOC Nigerian East Oil Co., Ltd., KNOC Nigerian West Oil Co., Ltd., PT Wampu Electric Power, PT. Bayan Resources TBK, Nepal Water & Energy Development Company Private Limited, Xe-Pian Xe-Namnoy Power Co., Ltd., PT. Mutiara Jawa, Jinbhuvish Power Generation Pvt. Ltd., Daejung Offshore Wind Power Co., Ltd., GS Donghae Electric Power Co., Ltd., Busan Green Energy Co., Ltd., Hansuwon KNP Co., Ltd., Korea Electric Power Corporation Fund, Energy Infra Asset Management Co., Ltd., Yaksu ESS Co., Ltd., PND Solar Co., Ltd., Hyundai Eco Energy Co., Ltd., YeongGwang Yaksu Wind Electric Co., Ltd., Green Energy Electricity Generation Co., Ltd., Korea Energy Solutions Co., Ltd., ITR Co., Ltd., STN Co., Ltd., Indeck Niles Development, LLC, Indeck Niles Asset Management, LLC, Hanwha Corporation-linked Sunlight Power Special Private Equity Investment Trust No. 1, Suwon New Power Co., Ltd., Gwangbaek Solar Power Investment Co., Ltd., Go deok Clean Energy Co., Ltd., SureDataLab Co., Ltd., SEP Co., Ltd., Hankook Electric Power Information Co., Ltd., Tronix Co., Ltd., O2&B Global Co., Ltd., Muan Sunshine Solar Power Plant Co., Ltd., Bigeum Resident Photovoltaic Power Co., Ltd., Goesan Solar park Co., Ltd., Saemangeum Heemang Photovoltaic Co., Ltd., Bitgoel Eco Energy Co., Ltd., Jeju Gimnyeong Wind Power Co., Ltd., Seoroseoro Sunny Power Plant Co., Ltd., Muan Solar Park Co., Ltd., YuDang Solar Co., Ltd., Anjwa Smart Farm & Solar City Co., Ltd., KPE Green Energy Co., Ltd., G.GURU Co., Ltd., UD4M Co., Ltd., Dongbu Highway Solar Co., Ltd., Seobu Highway Solar Co., Ltd., Korea Energy Data Co., Ltd., Gangneung Sacheon Fuel Cell Co., Ltd., Taebaek Gadeoksan Wind Power Co., Ltd., Chuncheon Green Energy Co., Ltd., Yeomsubong Wind Power Co., Ltd., Yeongyang Wind Power Corporation II, Haeparang Energy Co., Ltd., Saemangeum Sebit Power Plant Co., Ltd., PlatformN. Co., Ltd., PT. Cirebon Energi Prasarana, Future Convergence Technology Laboratory. Co., Ltd., ECO Motion Co., Ltd., REC’s Innovation Co., Ltd., ACE, Co., Ltd., Environment and Energy Co., Ltd., Green Radiation Co., Ltd., Santiago Solar Power SpA, Yanggu Floating Photovoltaic Power Plant Inc., Changwon SG energy Co., Ltd., Donpyung Technology. Co., Ltd., Power Embedded, HORANG ENERGY Inc., Hoenggye Renewable Energy Co., Ltd., Haman Green Energy Co., Ltd., Songsan Green Energy Co., Ltd., SkyPic Inc., HyChangwon Fuel Cell. Co., Ltd., Dreams Co.,Ltd., DEEPAI Co.,Ltd., Amaala Sustainable Company for Energy
Joint ventures (117 entities)		Daegu Green Power Co., Ltd., KEPCO SPC Power Corporation, KAPES, Inc., Honam Wind Power Co., Ltd., Korea Power Engineering Service Co., Ltd., Seokmun Energy Co., Ltd., Incheon New Power Co., Ltd., Chun-cheon Energy Co., Ltd., Yeonggwangbaeksu Wind Power Co., Ltd., KW Nuclear Components Co., Ltd., Busan Shinho Solar Power Co., Ltd., Global Trade Of Power System Co., Ltd., Expressway Solar-light Power Generation Co., Ltd., Gansu Datang Yumen Wind Power Co., Ltd., Datang Chifeng Renewable Power Co., Ltd., Rabigh Electricity Company, Rabigh Operation & Maintenance Company Limited, Datang KEPCO Chaoyang Renewable Power Co., Ltd., Shuweihat Asia Power Investment B.V., Shuweihat Asia Operation & Maintenance Company, Waterbury Lake Uranium L.P., ASM-BG Investicii AD, RES Technology AD, Jamaica Public Service Company Limited, KV Holdings, Inc., Amman Asia Electric Power Company, Kelar S.A., PT. Tanjung Power Indonesia, Nghi Son 2 Power LLC, Daehan Wind Power PSC, MOMENTUM, Barakah One Company, Nawah Energy Company, Yeonggwang Wind Power Co., Ltd., Chester Solar IV SpA, Chester Solar V SpA, Diego de Almagro Solar SpA, South Jamaica Power Company Limited, Daesan Green Energy Co., Ltd., RE Holiday Holdings LLC, RE Pioneer Holdings LLC, RE Barren Ridge 1 Holdings LLC, RE Astoria 2 LandCo LLC, RE Barren Ridge LandCo LLC, Laurel SpA, KIAMCO KOWEPO Bannerton Hold Co Pty Ltd, Cheong-Song Noraesan Wind Power Co., Ltd., Chester Solar I SpA, Solar Philippines Calatagan Corporation, Saemangeum Solar Power Co., Ltd., Chungsongmeon BongSan wind power Co., Ltd., Jaeun Resident Wind Power Plant Co., Ltd., DE Energia SpA, Dangjin Eco Power Co., Ltd., Haemodum Solar Co., Ltd., Yangyang Wind Power Co., Ltd., Horus Solar, S.A. de C.V., Recursos Solares PV de Mexico II, S.A. de C.V., Sunmex Renovables, S.A. de C.V., Stavro Holding II A.B., Solaseado Solar Power Co., Ltd., Yeongam Solar Power Co., Ltd., Samsu Wind Power Co., Ltd., Pulau Indah Power Plant Sdn. Bhd., NH-Amundi Global Infrastructure Investment Private Investment Trust 21, Shin-han BNPP Private Investment Trust for East-West Sunlight Dream, PT Barito Wahana Tenaga, Cheongna Energy Co., Ltd., Boim Combined Heat and Power Generation Co., Ltd., OneEnergy Asia Limited, KAS INVESTMENT I LLC, KAS INVESTMENT II LLC, Energyco Co., Ltd., CAES, LLC, Hapcheon Floating Photovoltaic Power Plant Inc., Busan Industrial Solar Power Co., Ltd., Bitsolar Energy Co., Ltd., Naepo Green Energy Co., Ltd., Pulau Indah O&M Sdn. Bhd., Guadalupe Solar SpA, Omisan Wind Power Co., Ltd., Foresight Iberian Solar Group Holding, S.L., Yeongwol Eco Wind Co., Ltd., Gurae Resident Power Co., Ltd., Cheongju Eco Park Co., Ltd., Prime Swedish Holding AB, Enel X Midland Photovoltaic, LLC, Geumsungsan Wind Power Co., Ltd., KEPCO KPS CARABAO Corp., Goheung New Energy Co., Ltd., Gunsan Land Solar Co., Ltd., CapMan Lynx SCA, SICAR, International Offshore Power Transmission Holding Company Limited, Eumseong Eco Park Co., Ltd., Changwon Nu-ri Energy Co., Ltd., PungBack Wind Farm Corporation, Seobusambo highway photovoltaics Co., Ltd., Seungmun Green Energy, Pyeongchang Wind Power Co., Ltd., Trumbull Asset Management, LLC, S-Power Chile SpA, Taebaek Wind Power Co., Ltd., Yangyang Suri Wind Power Co., Ltd., KEPCO for Power Company, Jeonju Bio Green Energy Co., Ltd., Kumyang Eco Park Co., Ltd., Jeongeup Green Power Co., Ltd., Hadong E-factory Co., Ltd., Namyangju Combined Heat and Power Co., Ltd., Wadi Noor Solar Power Company SAOC, Fairhaven Energy Storage LLC, Rutile BESS Holdings, LLC, Trumbull Development Partners, LLC, Samcheok Eco Materials Co., Ltd., Imha Floating Photovoltaic Power Plant Inc., Roof One Energy Co., Ltd., EDFR KOWEPO AJBAN PV HOLDING LIMITED
Others (1 entity)		Korea Development Bank

(2) Transactions between the Company and its subsidiaries are eliminated during the consolidation and are not disclosed in notes.

(3) Related party transactions for the years ended December 31, 2022, 2023 and 2024 are as follows:

<Sales and Others>

								Sales and others
Company name		Transaction type						2022				2023				2024
								In millions of won
<Associates>
Korea Gas Corporation		Electricity sales		￦					155,309				140,630				149,095
Goseong Green Power Co., Ltd.		Electricity sales							1,062,108				842,270				612,327
Dongducheon Dream Power Co., Ltd.		Electricity sales							8,942				16,138				17,151
Saemangeum Sebit Power Plant Co., Ltd.		Electricity sales							1,418				2,313				1,693
Daejung Offshore Wind Power Co., Ltd.		Electricity sales							46				84				87
Daegu Photovoltaic Co., Ltd.		Electricity sales							268				408				344
Haeng Bok Do Si Photovoltaic Power Co., Ltd.		Electricity sales							2				3				3
Korea Electric Power Industrial Development Co., Ltd.		Service							10,369				11,115				11,180
Gangneung Eco Power Co., Ltd.		Fuel sales							459,404				943,063				494,428
Shin Pyeongtaek Power Co., Ltd.		Electricity sales							27,486				91,830				55,610
Noeul Green Energy Co., Ltd.		Electricity sales							9,396				8,431				8,009
Samcheok Eco Materials Co., Ltd.(*1)		Electricity sales							546				615				—
YTN Co., Ltd.(*3)		Electricity sales							2,180				2,908				—
Busan Green Energy Co., Ltd.		Electricity sales							5,055				10,733				11,794
Korea Electric Vehicle Charging Service (*7)		Electricity sales							3,686				—
Energy Infra Asset Management Co., Ltd.		Electricity sales							—				89				89
Gangwon Wind Power Co., Ltd.		Electricity sales							1,549				2,464				1,736
Gwangyang Green Energy Co., Ltd.		Electricity sales							1,848				1,492				1,479
Bigeum Resident Photovoltaic Power Co., Ltd.		Electricity sales							660				888				919
Yanggu Floating Photovoltaic Power Plant Inc.		Electricity sales							—				—				6
Hyundai Green Power Co., Ltd.		Electricity sales and design service							7,063				6,668				6,659
Korea Power Exchange		Service							16,596				52,262				78,346
Taebaek Wind Power Co., Ltd. (*4)		Service							861				—				—
Taebaek Guinemi Wind Power Co., Ltd.		Electricity sales							—				—				26
Pyeongchang Wind Power Co., Ltd.		Electricity sales							1,323				—				—
Daeryun Power Co., Ltd.		Electricity sales							2,016				3,187				3,628
Changjuk Wind Power Co., Ltd. (*6)		Electricity sales							1,350				—				—
GS Donghae Electric Power Co., Ltd.		Electricity sales							5,238				28,164				9,284
KNH Solar Co., Ltd.		Electricity sales							13				15				1,635
S-Power Co., Ltd.		Service							4,588				4,965				2,359
Chuncheon Green Energy Co., Ltd.		Electricity sales							2				82				11,010
Yeongyang Wind Power Corporation II		Comission							—				150				150
PND Solar Co., Ltd.		Electricity sales							427				547				348
Hyundai Eco Energy Co., Ltd.		Electricity sales							277				1,236				833
YeongGwang Yaksu Wind Electric Co., Ltd.		Electricity sales							66				96				237
Taebaek Gadeoksan Wind Power Co., Ltd.		Electricity sales							1,952				3,998				2,464
Korea Energy Solutions Co., Ltd.		Electricity sales							2				2				2
ITR Co., Ltd.		Service							6				3				—
STN Co., Ltd. (formerly, Structure test network Co., Ltd.)		Service							7				—				1
Namjeongsusang Solar Power Operation Co., Ltd. (*2)		Electricity sales							21				31				—

								Sales and others
Company name		Transaction type						2022				2023				2024
								In millions of won
<Associates>
Hanwha Corporation-linked Sunlight Power Special Private Equity Investment Trust No. 1		Service		￦					394				405				360
Bitgoel Eco Energy Co., Ltd.		Electricity sales							1,397				1,581				3,377
Jeju Gimnyeong Wind Power Co., Ltd.		Electricity sales							367				315				458
Seoroseoro Sunny Power Plant Co., Ltd.		Electricity sales							1				2				2
Muan Solar park Co., Ltd.		Electricity sales							950				3,083				1,797
YuDang Solar Co., Ltd.		Electricity sales							160				100				60
Anjwa Smart Farm & Solar City Co., Ltd.		Electricity sales							1,068				2,479				971
KPE Green Energy Co., Ltd.		Electricity sales							185				163				226
Saemangeum Heemang Photovoltaic Co., Ltd.		Electricity sales							5,740				3,538				2,232
UD4M Co., Ltd.		Electricity sales							2				3				8
Dongbu Highway Solar Co., Ltd.		Electricity sales							8				11				11
Seobu Highway Solar Co., Ltd.		Electricity sales							8				12				13
Songsan Green Energy Co., Ltd.		Interest income/ Dividends income							—				—				174
Gwangbaek Solar Power Investment Co., Ltd.		Electricity sales							—				644				523
Go deok Clean Energy Co., Ltd.		Electricity sales							—				4,685				11,376
Changwon SG Energy Co., Ltd.									—				—				9
SureDataLab Co., Ltd.		Electricity sales							1				1				—
Suwon New Power Co., Ltd.		Electricity sales							118				91				(102	)
Kosture Co., Ltd.		Electricity sales							5				—				—
PlatformN. Co., Ltd.		Others							14				16				—
Muan Sunshine Solar Power Plant Co., Ltd.		Electricity sales							17				403				630
Gangneung Sacheon Fuel Cell Co., Ltd.		Electricity sales							151				133				8,343
13 Associates (Overseas)		Electricity sales							548,507				386,191				243,651
<Joint ventures>
Seobusambo highway photovoltaics Co., Ltd.		Electricity sales							3				16				20
Yangyang Suri Wind Power Co., Ltd.		Electricity sales							—				169				202
Naepo Green Energy Co., Ltd.		Electricity sales							761				3,462				3,972
Cheongna Energy Co., Ltd.		Others							39,802				32,835				38,349
Namyangju Combined Heat and Power Co., Ltd.		Service							—				—				2,493
Boim Combined Heat and Power Generation Co., Ltd.		Service							7,761				2,110				2,073
Daegu Green Power Co., Ltd.		Electricity sales							1,190				1,694				2,385
KAPES, Inc.		Commission							450				1,604				1,531
Honam Wind Power Co., Ltd.		Electricity sales							242				610				529
Korea Power Engineering Service Co., Ltd.		Service							268				159				777
Seokmun Energy Co., Ltd.		Service							1,685				1,792				1,774
Incheon New Power Co., Ltd.		Construction revenue							14				458				26
Chun-cheon Energy Co., Ltd.		Electricity sales							2,505				2,976				968
Yeonggwangbaeksu Wind Power Co., Ltd.		Electricity sales							1,898				1,962				2,031

								Sales and others
Company name		Transaction type						2022				2023				2024
								In millions of won
<Joint ventures>
Yeonggwang Wind Power Co., Ltd.		Electricity sales		￦					871				3,607				943
NH-Amundi Global Infrastructure Investment Private Investment Trust 21		Service							1,415				1,568				—
Seungmun Green Energy		Electricity sales							—				—				79
KW Nuclear Components Co., Ltd.		Service							1,624				1,612				1,645
Taebaek Wind Power Co., Ltd. (*4)		Others							—				2,864				41
Pyeongchang Wind Power Co., Ltd.		Electricity sales							—				2,087				771
KEPCO-Uhde Inc. (*5)		Electricity sales							12				—				—
Busan Shinho Solar Power Co., Ltd.		Electricity sales							502				1,205				699
Expressway Solar-light Power Generation Co., Ltd.		Electricity sales							—				43				—
Goheung New Energy Co., Ltd.		Electricity sales							141				3,214				3,106
Gunsan Land Solar Co., Ltd.		Electricity sales							518				809				944
Daesan Green Energy Co., Ltd.		Electricity sales							394				760				426
Cheong-Song Noraesan Wind Power Co., Ltd.		Electricity sales							698				901				38
Chungsongmeon BongSan wind power Co., Ltd.		Electricity sales							1				1				1
Saemangeum Solar Power Co., Ltd.		Service							100				—				—
Dangjin Eco Power Co., Ltd.		Electricity sales							32				40				42
Yangyang Wind Power Co., Ltd.		Electricity sales							—				13				238
Energyco Co., Ltd.		Electricity sales							463				457				161
Hapcheon Floating Photovoltaic Power Plant Inc.		Electricity sales							544				88				905
Busan Industrial Solar Power Co., Ltd.		Electricity sales							14				22				23
Bitsolar Energy Co., Ltd.		Electricity sales							498				357				464
Omisan Wind Power Co., Ltd.		Electricity sales							1				26				279
Changwon Nu-ri Energy Co., Ltd.		Service							—				—				171
Jeonju Bio Green Energy Co., Ltd.		Service							—				—				170
Haemodum Solar Co., Ltd.		Electricity sales							42				431				39
Yeongam Solar Power Co., Ltd.		Electricity sales							379				1,131				545
Samsu Wind Power Co., Ltd		Electricity sales							—				514				301
Solaseado Solar Power Co., Ltd.		Electricity sales							1,851				1,876				1,870
Shin-han BNPP Private Investment Trust for East-West Sunlight Dream		Dividends income							—				—				87
Yeongwol Eco Wind Co., Ltd.		Electricity sales							—				102				—
Gurae Resident Power Co., Ltd.		Electricity sales							—				8				—
Cheongju Eco Park Co., Ltd.		Electricity sales							204				6,397				316
Enel X Midland Photovoltaic, LLC		Electricity sales							12				11				11
Eumseong Eco Park Co., Ltd.		Electricity sales							2				19				19
Geumsungsan Wind Power Co., Ltd.		Electricity sales							7				68				58
43 Joint ventures (Overseas)		Electricity sales							606,513				747,301				518,941
<Others>
Korea Development Bank		Electricity sales							4,134				5,467				4,368
		Interest income							2,222				5,930				10,324

<Purchase and Others>

								Purchase and others
Company name		Transaction type						2022				2023				2024
								In millions of won
<Associates>
Korea Gas Corporation		Electricity sales		￦					11,996,402				8,873,781				6,623,974
Goseong Green Power Co., Ltd.		Electricity sales							1,905,502				1,572,074				1,301,710
Dongducheon Dream Power Co., Ltd.		Electricity sales							2,244,332				1,744,247				1,360,837
Saemangeum Sebit Power Plant Co., Ltd.		Electricity sales							23,159				22,365				19,753
Daegu Photovoltaic Co., Ltd.		Electricity sales							4,744				4,247				3,815
Haeng Bok Do Si Photovoltaic Power Co., Ltd.		Electricity sales							563				408				427
Korea Electric Power Industrial Development Co., Ltd.		Service							251,468				305,105				317,114
Gangneung Eco Power Co., Ltd.		Others							—				6,996				1,134
Shin Pyeongtaek Power Co., Ltd.		Electricity sales							957,294				1,040,965				843,056
Noeul Green Energy Co., Ltd.		Electricity sales							14,176				10,466				20,833
Samcheok Eco Materials Co., Ltd.(*1)		Electricity sales							12,019				8,130				—
YTN Co., Ltd.(*3)		Electricity sales							304				309				—
Busan Green Energy Co., Ltd.		Electricity sales							26,219				23,211				28,272
Energy Infra Asset Management Co., Ltd.		Service							2,779				2,701				2,631
Yaksu ESS Co., Ltd.		Electricity sales							851				508				749
Gangwon Wind Power Co., Ltd.		Electricity sales							40,130				32,525				23,400
Bigeum Resident Photovoltaic Power Co., Ltd.		Others							—				—				285
Yanggu Floating Photovoltaic Power Plant Inc.		Electricity sales							—				—				562
Goesan Solar park Co., Ltd.		Electricity sales							7,642				6,530				6,143
Korea Power Exchange		Service							93,817				82,572				90,549
Taebaek Wind Power Co., Ltd. (*4)		Service and REC							7,442				—				—
Taebaek Guinemi Wind Power Co., Ltd.		Electricity sales							6,793				5,529				5,155
Pyeongchang Wind Power Co., Ltd.		Design service and others							3,884				—				—
Daeryun Power Co., Ltd.		Electricity sales							428,534				353,371				282,968
Changjuk Wind Power Co., Ltd. (*6)		Electricity sales							9,027				—				—
GS Donghae Electric Power Co., Ltd.		Electricity sales							1,035,263				1,047,584				519,119
KNH Solar Co., Ltd.		Electricity sales							4,348				3,535				2,671
S-Power Co., Ltd.		Service							1,091,741				973,646				693,948
Chuncheon Green Energy Co., Ltd.		Electricity sales							—				—				39,333
Yeongyang Wind Power Corporation II		Comission							—				1,457				17,898
PND Solar Co., Ltd.		Electricity sales							6,173				5,301				5,231
Hyundai Eco Energy Co., Ltd.		Electricity sales							29,209				26,266				26,253
YeongGwang Yaksu Wind Electric Co., Ltd.		Electricity sales							7,382				6,776				7,415
Taebaek Gadeoksan Wind Power Co., Ltd.		Electricity sales							25,880				34,940				32,549
Korea Energy Solutions Co., Ltd.		Electricity sales							102				128				132
STN Co., Ltd. (formerly, Structure test network Co., Ltd.)		Others							—				10				8
Green Energy Electricity Generation Co., Ltd.		Electricity sales							2,962				948				1,966
Namjeongsusang Solar Power Operation Co., Ltd. (*2)		Electricity sales							9,491				—				—
Bitgoel Eco Energy Co., Ltd.		Service and others							930				28,334				32,413
Jeju Gimnyeong Wind Power Co., Ltd.		Electricity sales							12,364				8,635				10,161
Seoroseoro Sunny Power Plant Co., Ltd.		REC and others							1,138				874				991

								Purchase and others
Company name		Transaction type						2022				2023				2024
								In millions of won
<Associates>
Muan Solar Park Co., Ltd.		REC and others		￦					17,052				16,554				17,825
YuDang Solar Co., Ltd.		REC and others							1,915				1,860				2,020
Anjwa Smart Farm & Solar City Co., Ltd.		Electricity sales							16,942				17,332				19,494
KPE Green Energy Co., Ltd.		Others							42,651				62,212				41,197
Saemangeum Heemang Photovoltaic Co., Ltd.		Electricity sales							1,039				440				2,745
G.GURU Co., Ltd.		Electricity sales							452				—				—
UD4M Co., Ltd.		Electricity sales							313				117				—
Dongbu Highway Solar Co., Ltd.		Electricity sales							3,516				2,937				2,951
Seobu Highway Solar Co., Ltd.		Electricity sales							3,452				2,880				2,899
REC’s Innovation Co., Ltd. (formerly, Wang San Engineering. Co,. Ltd.)		Interest income/ Dividends income							—				6				23
Dreams Co.,Ltd.		Others							—				—				30
DEEPAI Co.,Ltd.		Others							—				—				30
Green Radiation Co., Ltd.		Ordinary development expense							—				11				45
Gwangbaek Solar Power Investment Co., Ltd.		Electricity sales							602				565				499
Go deok Clean Energy Co., Ltd.		Electricity sales							—				11,545				35,055
Changwon SG Energy Co., Ltd.		Electricity sales							—				—				1,080
SureDataLab Co., Ltd.		Others							—				—				72
PlatformN. Co., Ltd.		Others							475				—				237
Muan Sunshine Solar Power Plant Co., Ltd.		Electricity sales							19,514				16,328				15,697
Gangneung Sacheon Fuel Cell Co., Ltd.		Electricity sales							—				1,324				32,689
13 Associates (Overseas)		Electricity sales							101,790				91,233				98,753
<Joint ventures>
Seobusambo highway photovoltaics Co., Ltd.		Electricity sales							103				502				825
Cheongna Energy Co., Ltd.		Service							80				60				60
Boim Combined Heat and Power Generation Co., Ltd.		Service							13,872				8,151				3,038
Daegu Green Power Co., Ltd.		Electricity sales							508,601				370,787				328,485
KAPES, Inc.		Commission							9,306				19,112				23,924
Honam Wind Power Co., Ltd.		Electricity sales							7,662				8,643				7,148
Korea Power Engineering Service Co., Ltd.		Service							830				812				551
Seokmun Energy Co., Ltd.		Service							60,799				60,009				51,924
Chun-cheon Energy Co., Ltd.		Electricity sales							585,689				585,656				430,697
Yeonggwangbaeksu Wind Power Co., Ltd.		Electricity sales							13,990				17,228				12,294
Samcheok Eco Materials Co., Ltd. (*1)		Electricity sales							—				—				3,282
Yeonggwang Wind Power Co., Ltd.		Electricity sales							31,221				40,605				31,712
Seungmun Green Energy		Electricity sales							—				—				25,725
KW Nuclear Components Co., Ltd.		Service							9,504				14,114				6,880
Taebaek Wind Power Co., Ltd. (*4)		Service							—				7,476				6,327
Pyeongchang Wind Power Co., Ltd.		Electricity sales							—				3,542				3,079
Busan Shinho Solar Power Co., Ltd.		Electricity sales							10,601				10,248				8,467
Global Trade Of Power System Co., Ltd.		Service							715				223				511

								Purchase and others
Company name		Transaction type						2022				2023				2024
								In millions of won
<Joint ventures>
Expressway Solar-light Power Generation Co., Ltd.		Electricity sales		￦					4,016				3,362				3,165
Goheung New Energy Co., Ltd.		Electricity sales							—				5,264				10,133
Gunsan Land Solar Co., Ltd.		Electricity sales							533				486				2,752
Daesan Green Energy Co., Ltd.		Electricity sales							129,736				139,721				154,623
Cheong-Song Noraesan Wind Power Co., Ltd.		Electricity sales							980				882				2,048
Saemangeum Solar Power Co., Ltd.		Electricity sales							1				—				—
Dangjin Eco Power Co., Ltd.		Electricity sales							5,696				5,583				3,645
Yangyang Wind Power Co., Ltd.		Service and Electricity sales							—				10				3,599
Energyco Co., Ltd.		Electricity sales							7,898				6,539				5,788
Hapcheon Floating Photovoltaic Power Plant Inc.		Service and REC							2,526				—				4,759
Busan Industrial Solar Power Co., Ltd.		Electricity sales							4,575				3,656				2,493
Bitsolar Energy Co., Ltd.		Electricity sales							13,030				12,946				9,072
Omisan Wind Power Co., Ltd.		Electricity sales							—				—				638
Haemodum Solar Co., Ltd.		Electricity sales							2,168				402				544
Yeongam Solar Power Co., Ltd.		Electricity sales							44,745				34,981				24,004
Samsu Wind Power Co., Ltd.		Electricity sales							10,605				8,269				6,864
Solaseado Solar Power Co., Ltd.		Electricity sales							28,698				18,259				24,899
Yeongwol Eco Wind Co., Ltd.		Electricity sales							—				—				2,496
Gurae Resident Power Co., Ltd.		Electricity sales							—				1				476
Cheongju Eco Park Co., Ltd.		Electricity sales							94,409				95,059				34,601
Enel X Midland Photovoltaic, LLC		Electricity sales							1,871				2,431				3,200
Eumseong Eco Park Co., Ltd.		Electricity sales							—				27,765				26,372
43 Joint ventures (Overseas)		Electricity sales							16,859				17,222				14,796
<Others>
Korea Development Bank		Interest expense							4,208				5,559				7,839
		Dividends paid							12				—				—

(*1) Samcheok Eco Materials Co., Ltd. was reclassified from an associate to a joint venture for the year ended December 31, 2024.

(*2) Namjeongsusang Solar Power Operation Co., Ltd. is not a related party of the Company as of December 31, 2024, as the sale of shares was completed for the year ended December 31, 2023.

(*3) YTN Co., Ltd. is not a related party of the Company as of December 31, 2024, as the sale of shares was completed for the year ended December 31, 2024.

(*4) Taebaek Wind Power Co., Ltd. was changed from an associate to a joint venture for the year ended December 31, 2023.

(*5) KEPCO-Uhde Inc. is not a related party of the Company as of December 31, 2023 as the liquidation process was completed for the year ended December 31, 2023.

(*6) Changjuk Wind Power Co., Ltd. was reclassified from an associate to a subsidiary for the year ended December 31, 2022, and the amount is before reclassification to a subsidiary.

(*7) Korea Electric Vehicle Charging Service is not a related party of the Company as of December 31, 2022 as the sale of shares was completed for the year ended December 31, 2022.

(4) Receivables and payables arising from related party transactions as of December 31, 2023 and 2024 are as follows:

								Receivables								Payables
Company name		Type						2023				2024				2023				2024
								In millions of won
<Associates>
Korea Gas Corporation		Trade receivables		￦					14,671				15,766				—				—
		Non-trade receivables and others							12,513				404				—				—
		Trade payables							—				—				480,974				482,008
		Non-trade payables and others							—				—				1,378				1,486
Goseong Green Power Co., Ltd.		Trade receivables							55,719				30,732				—				—
		Non-trade receivables and others							15				1,438				—				—
		Trade payables							—				—				120,270				162,719
		Non-trade payables and others							—				—				48,621				45,174
Dongducheon Dream Power Co., Ltd.		Trade receivables							2,573				6,350				—				—
		Non-trade receivables and others							478				637				—				—
		Trade payables							—				—				117,975				114,962
		Non-trade payables and others							—				—				—				29
Saemangeum Sebit Power Plant Co., Ltd.		Trade receivables							—				156				—				—
		Non-trade receivables and others							341				47				—				—
		Trade payables							—				—				—				1,499
Green Radiation Co., Ltd.		Non-trade payables and others							—				—				—				30
Daejung Offshore Wind Power Co., Ltd.		Non-trade receivables and others							263				349				—				—
Daegu Photovoltaic Co., Ltd.		Trade payables							—				—				105				108
Korea Electric Power Industrial		Trade receivables							176				123				—				—
Development Co., Ltd.		Trade payables							—				—				2,021				1,291
		Non-trade payables and others							—				—				8,077				8,832
Gangneung Eco Power Co., Ltd.		Trade receivables							59,623				8,142				—				—
		Non-trade payables and others							—				—				94				105
Shin Pyeongtaek Power Co., Ltd.		Trade receivables							1,814				1,720				—				—
		Non-trade receivables and others							4,933				5,812				—				—
		Trade payables							—				—				86,801				77,222
		Non-trade payables and others							—				—				385				2,450
Noeul Green Energy Co., Ltd.		Trade receivables							6				5				—				—
		Non-trade receivables and others							18,356				27,043				—				—
		Non-trade payables and others							—				—				3,005				3,699
Samcheok Eco Materials Co., Ltd. (*1)		Trade receivables							33				—				—				—
YTN Co., Ltd. (*2)		Trade receivables							133				—				—				—
Busan Green Energy Co., Ltd.		Trade receivables							1				1				—				—
		Non-trade receivables and others							32,720				43,790				—				—
		Non-trade payables and others							—				—				3,642				4,799
Energy Infra Asset Management Co., Ltd.		Non-trade payables and others							—				—				—				1
Yaksu ESS Co., Ltd.		Trade payables							—				—				538				923
Gangwon Wind Power Co., Ltd.		Trade receivables							13				10				—				—
		Trade payables							—				—				3,206				4,023
Gwangyang Green Energy Co., Ltd.		Trade receivables							1,069				1,040				—				—
		Non-trade receivables and others							716				1,016				—				—
Bigeum Resident Photovoltaic Power Co., Ltd.		Trade receivables							406				273				—				—
		Non-trade receivables and others							1,316				1,796				—				—
Goesan Solar park Co., Ltd.		Trade payables							—				—				56				—
Hyundai Green Power Co., Ltd.		Trade receivables							903				893				—				—
Korea Power Exchange		Trade receivables							1,583				2,434				—				—
		Non-trade receivables and others							1				—				—				—
		Trade payables							—				—				16,367				2,688
		Non-trade payables and others							—				—				2,520				1,571
Taebaek Guinemi Wind Power Co., Ltd.		Trade payables							—				—				572				840
		Non-trade payables and others							—				—				286				167
Daeryun Power Co., Ltd.		Trade receivables							326				—				—				—
		Trade payables							—				—				32,140				35,392
GS Donghae Electric Power Co., Ltd.		Trade receivables							159				22				—				—
		Non-trade receivables and others							169				109				—				—
		Trade payables							—				—				72,951				90,468
		Non-trade payables and others							—				—				125				—

								Receivables								Payables
Company name		Type						2023				2024				2023				2024
								In millions of won
<Associates>
KNH Solar Co., Ltd.		Trade receivables		￦					1				—				—				—
		Trade payables							—				—				19				—
		Non-trade payables and others							—				—				1				—
S-Power Co., Ltd.		Trade receivables							213				264				—				—
		Non-trade receivables and others							53				54				—				—
		Trade payables							—				—				79,459				73,377
		Non-trade payables and others							—				—				—				19
Chuncheon Green Energy Co., Ltd.		Non-trade receivables and others							—				10,870				—				—
		Non-trade payables and others							—				—				—				8,881
Yeongyang Wind Power Corporation II		Non-trade receivables and others							165				—				—				—
		Trade payables							—				—				—				3,978
PND solar Co., Ltd.		Trade payables							—				—				296				418
Hyundai Eco Energy Co., Ltd.		Trade receivables							28				25				—				—
		Trade payables							—				—				408				647
YeongGwang Yaksu Wind Electric Co., Ltd.		Trade receivables							10				7				—				—
		Non-trade receivables and others							2,294				2,858				—				—
		Trade payables							—				—				828				1,034
Taebaek Gadeoksan Wind Power Co., Ltd.		Non-trade receivables and others							1,539				62				—				—
		Trade payables							—				—				12,739				9,249
		Non-trade payables and others							—				—				7				1
Green Energy Electricity Generation Co., Ltd.		Trade payables							—				—				62				—
		Non-trade payables and others							—				—				45				—
Bitgoel Eco Energy Co., Ltd.		Trade payables							—				—				6,226				5,394
		Non-trade receivables and others							131				2				—				—
		Non-trade payables and others							—				—				—				1,458
Jeju Gimnyeong Wind Power Co., Ltd.		Non-trade receivables and others							112				143				—				—
		Trade payables							—				—				1,467				2,152
		Non-trade payables and others							—				—				9				5
Muan Solar Park Co., Ltd.		Non-trade receivables and others							4				4				—				—
Anjwa Smart Farm & Solar City Co., Ltd.		Non-trade payables and others							—				—				1,296				1,797
KPE Green Energy Co., Ltd.		Trade receivables							1				1				—				—
		Non-trade receivables and others							—				130				—				—
		Trade payables							—				—				5,485				5,521
Saemangeum Heemang Photovoltaic Co., Ltd.		Non-trade receivables and others							—				1				—				—
Dongbu Highway Solar Co., Ltd.		Trade receivables							1				1				—				—
		Trade payables							—				—				—				241
		Non-trade payables and others							—				—				—				1
Seobu Highway Solar Co., Ltd.		Trade receivables							1				1				—				—
		Trade payables							—				—				—				231
		Non-trade payables and others							—				—				—				2
Songsan Green Energy Co., Ltd.		Non-trade receivables and others							—				190				—				—
Dreams Co.,Ltd.		Non-trade receivables and others							—				1				—				—
		Non-trade payables and others							—				—				—				30
DEEPAI Co.,Ltd.		Non-trade receivables and others							—				1				—				—
		Non-trade payables and others							—				—				—				30
Go deok Clean Energy Co., Ltd.		Non-trade receivables and others							4,562				10,118				—				—
		Non-trade payables and others							—				—				5,288				3,022
Suwon New Power Co., Ltd.		Trade receivables							876				—				—				—
		Non-trade receivables and others							560				—				—				—
		Non-trade payables and others							—				—				—				1
Muan Sunshine Solar Power Plant Co., Ltd.		Trade payables							—				—				1,440				1,954
Gangneung Sacheon Fuel Cell Co., Ltd.		Trade receivables							—				8,343				—				—
		Non-trade payables and others							—				—				—				3,201
9 Associates (Overseas)		Trade receivables							77,814				59,651				—				—
		Non-trade payables and others							—				—				6,242				—

								Receivables								Payables
Company name		Type						2023				2024				2023				2024
								In millions of won
<Joint ventures>
Daegu Green Power Co., Ltd.		Trade receivables		￦					122				182				—				—
		Non-trade receivables and others							55				503				—				—
		Trade payables							—				—				32,222				25,622
Seobusambo highway photovoltaics Co., Ltd.		Trade receivables							1				1				—				—
		Non-trade receivables and others							4				4				—				—
Yangyang Suri Wind Power Co., Ltd.		Non-trade receivables and others							55				55				—				—
KAPES, Inc.		Trade receivables							4				4				—				—
		Non-trade receivables and others							89				90,088				—				—
		Non-trade payables and others							—				—				3,791				3,041
Honam Wind Power Co., Ltd.		Trade payables							—				—				515				515
Korea Power Engineering Service Co., Ltd.		Non-trade receivables and others							48				52				—				—
		Non-trade payables and others							—				—				76				—
Seokmun Energy Co., Ltd.		Trade receivables							44				35				—				—
		Non-trade receivables and others							199				862				—				—
		Trade payables							—				—				7,000				7,156
Incheon New Power Co., Ltd.		Trade receivables							—				9				—				—
Naepo Green Energy Co., Ltd.		Trade receivables							190				325				—				—
		Non-trade receivables and others							1				458				—				—
Chun-cheon Energy Co., Ltd.		Trade receivables							239				—				—				—
		Non-trade receivables and others							165				—				—				—
		Trade payables							—				—				79,117				35,325
		Non-trade payables and others							—				—				2				—
Yeonggwangbaeksu Wind Power Co., Ltd.		Trade receivables							10				9				—				—
		Non-trade receivables and others							—				178				—				—
		Trade payables							—				—				1,076				962
Cheongna Energy Co., Ltd.		Trade receivables							13,898				7,033				—				—
		Non-trade receivables and others							2,160				3,229				—				—
		Non-trade payables and others							—				—				1				8
Yeonggwang Wind Power Co., Ltd.		Trade receivables							15				12				—				—
		Non-trade receivables and others							56				58				—				—
		Trade payables							—				—				2,251				4,591
Seungmun Green Energy		Non-trade receivables and others							—				34				—				—
KW Nuclear Components Co., Ltd.		Non-trade receivables and others							17				—				—				—
Boim Combined Heat and Power Generation Co., Ltd.		Trade receivables							84				47				—				—
		Non-trade receivables and others							10,779				3,208				—				—
		Trade payables							—				—				721				445
		Non-trade payables and others							—				—				14,193				13,824
Taebaek Wind Power Co., Ltd.		Trade payables							—				—				603				691
		Non-trade payables and others							—				—				341				184
		Trade receivables							4				—				—				—
Busan Shinho Solar Power Co., Ltd.		Trade receivables							3				3				—				—
		Trade payables							—				—				304				915
Global Trade Of Power System Co., Ltd.		Non-trade payables and others							—				—				—				7
Expressway Solar-light Power Generation Co., Ltd.		Trade payables							—				—				220				432
Goheung New Energy Co., Ltd.		Trade receivables							—				21				—				—
		Non-trade receivables and others							—				8				—				—
Gunsan Land Solar Co., Ltd.		Non-trade receivables and others							295				217				—				—
Daesan Green Energy Co., Ltd.		Trade receivables							13				4				—				—
		Non-trade receivables and others							170				211				—				—
		Trade payables							—				—				4,946				3,819
Cheong-Song Noraesan Wind Power Co., Ltd.		Trade receivables							2				—				—				—
Saemangeum Solar Power Co., Ltd.		Non-trade receivables and others							4,368				4,368				—				—
Dangjin Eco Power Co., Ltd.		Trade receivables							4				4				—				—
		Trade payables							—				—				222				282
		Non-trade payables and others							—				—				176				181
Yangyang Wind Power Co., Ltd.		Non-trade receivables and others							13				163				—				—

								Receivables								Payables
Company name		Type						2023				2024				2023				2024
								In millions of won
<Joint ventures>
Energyco Co., Ltd.		Non-trade receivables and others		￦					3				124				—				—
		Trade payables							—				—				99				432
Hapcheon Floating Photovoltaic Power Plant Inc.		Trade receivables							10				12				—				—
		Non-trade receivables and others							68				59				—				—
Busan Industrial Solar Power Co., Ltd.		Trade receivables							2				2				—				—
		Trade payables							—				—				—				240
Bitsolar Energy Co., Ltd.		Trade receivables							—				12				—				—
		Non-trade receivables and others							1				444				—				—
		Trade payables							—				—				201				207
Omisan Wind Power Co., Ltd.		Non-trade receivables and others							—				146				—				—
Changwon Nu-ri Energy Co., Ltd.		Non-trade receivables and others							—				188				—				—
Jeonju Bio Green Energy Co., Ltd.		Non-trade receivables and others							—				187				—				—
Haemodum Solar Co., Ltd.		Trade receivables							1				1				—				—
Yeongam Solar Power Co., Ltd.		Trade receivables							56				48				—				—
		Trade payables							—				—				3,517				5,723
Samsu Wind Power Co., Ltd.		Trade payables							—				—				1,229				1,834
Solaseado Solar Power Co., Ltd.		Non-trade receivables and others							24				15				—				—
Cheongju Eco Park Co., Ltd.		Trade receivables							6,899				—				—				—
		Non-trade receivables and others							—				13,461				—				—
		Trade payables							—				—				7,994				9,105
		Non-trade payables and others							—				—				—				2,853
Enel X Midland Photovoltaic, LLC		Trade receivables							1				1				—				—
		Trade payables							—				—				144				204
		Non-trade payables and others							—				—				49				59
Geumsungsan Wind Power Co., Ltd.		Trade receivables							4				3				—				—
27 Joint ventures (Overseas)		Trade receivables							160,474				271,219				—				—
		Non-trade receivables and others							55,897				59,839				—				—
		Non-trade payables and others							—				—				22,877				34,932
<Others>
Korea Development Bank		Non-trade receivables and others							33,140				34,138				—				—
		Non-trade payables and others							—				—				147				231
		Derivatives and others							45,898				273,627				72,050				2,421

(*1) Samcheok Eco Materials Co., Ltd. was reclassified from an associate to a joint venture for the year ended December 31, 2024.

(*2) YTN Co., Ltd. is not a related party of the Company as of December 31, 2024, as the sale of shares was completed for the year ended December 31, 2024.

(5) Loans and others arising from related party transactions as of December 31, 2023 and 2024 are as follows:

Type		Company name						Beginning balance				Loans				Collection				Others				Ending balance
								In millions of won
Associates		KNOC Nigerian East Oil Co., Ltd., KNOC Nigerian West Oil Co., Ltd.		￦					32,153				913				—				—				33,066
		(Allowance for doubtful accounts)							(25,543	)			(913	)			—				(6,610	)			(33,066	)
Associates		Nepal Water & Energy Development Company Private Limited							18,052				—				(18,052	)			—				—
Associates		Xe-Pian Xe-Namnoy Power Co., Ltd.							23,337				—				—				3,269				26,606
Associates		PT. Cirebon Energi Prasarana							35,542				—				(3,658	)			6,981				38,865
Associates		Bigeum Resident Photovoltaic Power Co., Ltd.							9,525				—				—				(9,525	)			—
Associates		Daejung Offshore Wind Power Co., Ltd.							1,000				—				—				—				1,000
Associates		Bitgoel Eco Energy Co., Ltd.							30,885				—				(4,260	)			—				26,625

Type		Company name						Beginning balance				Loans				Collection				Others				Ending balance
								In millions of won
Associates		Saemangeum Sebit Power Plant Co., Ltd.		￦					28,970				—				(1,420	)			—				27,550
Joint ventures		Solaseado Solar Power Co., Ltd.							35,000				—				(71	)			—				34,929
Joint ventures		Recursos Solares PV de Mexico II, S.A. de C.V.							10,589				2,074				—				1,650				14,313
Joint ventures		Horus Solar, S.A. de C.V.							11,199				798				—				1,680				13,677
Joint ventures		Sunmex Renovables, S.A. de C.V.							17,210				2,018				—				2,565				21,793
Joint ventures		Kelar S.A.							40,985				—				(11,582	)			(10,112	)			19,291
Joint ventures		DE Energia SpA							7,386				—				—				1,034				8,420
Joint ventures		Daehan Wind Power PSC							14,872				—				—				2,084				16,956
Joint ventures		Bitsolar Energy Co., Ltd.							3,165				—				—				—				3,165
Joint ventures		Daesan Green Energy Co., Ltd.							2,411				80				—				—				2,491
Joint ventures		Yangyang Wind Power Co., Ltd.							3,257				—				—				—				3,257
Joint ventures		Nghi Son 2 Power LLC							189,991				—				(43,906	)			22,516				168,601
Joint ventures		Pulau Indah Power Plant Sdn. Bhd.							9,963				—				—				(9,963	)			—
Joint ventures		Guadalupe Solar SpA							3,161				—				(232	)			423				3,352
Joint ventures		Foresight Iberian Solar Group Holding, S.L.							64,318				222				—				6,597				71,137
Joint ventures		Capman Lynx SCA, SICAR							35,210				—				—				—				35,210
		(Allowance for doubtful accounts)							(35,210	)			—				—				—				(35,210	)
Joint ventures		S-Power Chile SpA							258				—				—				36				294
Joint ventures		Omisan Wind Power Co., Ltd.							—				8,894				—				—				8,894
				￦					567,686				14,086				(83,181	)			12,625				511,216

(6) Borrowings arising from related party transactions as of December 31, 2023 and 2024 are as follows:

Related parties		Type						Beginning balance				Borrowings				Repayment				Others				Ending balance
								In millions of won
Korea Development		Facility		￦					85,103				—				(8,469	)			8,019				84,653
Bank		Others							1,758				—				(334	)			—				1,424
		Operating funds							120,000				832,167				(852,167	)			—				100,000
		EBL and others							119,160				20,050				(995	)			11,647				149,862
				￦					326,021				852,217				(861,965	)			19,666				335,939

(7) Guarantees provided to related parties as of December 31, 2024 are as follows:

Primary guarantor		Principal obligor		Type of guarantees		Credit limit				Creditor
						In millions of won and thousands of foreign currencies
Korea Electric Power Corporation		Shuweihat Asia Operation & Maintenance Company		Performance guarantees			USD 11,000			Shuweihat Asia Power Investment B.V.
Korea Electric Power Corporation		Rabigh Operation & Maintenance Company Limited		Performance guarantees			USD 1,387			Rabigh Electricity Company
Korea Electric Power Corporation		Nghi Son 2 Power LLC		Certification of payment on L/C			USD 42,750			SMBC Singapore and others
Korea Electric Power Corporation		Barakah One Company		Debt guarantees			USD 1,223,355			Export-Import Bank of Korea and others
				Performance guarantees and others			USD 3,986,562			FAB and others
Korea Electric Power Corporation		RE Holiday Holdings LLC		Performance guarantees (*9)			USD 203,981			EFS Renewables Holdings, LLC, CA-CIB and others

Primary guarantor		Principal obligor		Type of guarantees		Credit limit				Creditor
						In millions of won and thousands of foreign currencies
Korea Electric Power Corporation		RE Pioneer Holdings LLC		Performance guarantees			USD 106,873			EFS Renewables Holdings, LLC
Korea Electric Power Corporation		Rabigh Electricity Company		Performance guarantees			SAR 4,151			Hana Bank
Korea Electric Power Corporation		Shuweihat Asia Power Investment B.V.		Certification of payment on L/C			USD 9,800			Hana Bank
Korea Electric Power Corporation		Amman Asia Electric Power Company		Certification of payment on L/C			USD 15,600			ING Bank
Korea Electric Power Corporation		Horus Solar, S.A. de C.V.		Other performance guarantees			MXN 14,843			CENACE and others
Korea Electric Power Corporation		Recursos Solares PV de Mexico II, S.A. de C.V.		Other performance guarantees			MXN 1,518			SEMARNAT
							USD 393			CFE Transmission
Korea Electric Power Corporation		Sunmex Renovables, S.A. de C.V.		Other performance guarantees			USD 9,078			CENACE
							MXN 4,929			CFE Transmission and others
Korea Electric Power Corporation		International Offshore Power Transmission Holding Company Limited		Performance guarantees			USD 52,500			Mizuho Bank
				Other performance guarantees			USD 7,000			Credit Agricole
Korea Electric Power Corporation		Pulau Indah Power Plant Sdn. Bhd.		Collateralized money invested (*10)			KRW 13,210			Malaysian Trustee Berhad
Korea Electric Power Corporation		KEPCO for Power Company		Debt guarantees			USD 60,000			Riyad bank
				Other performance guarantees			USD 70,000			SMBC Seoul
Korea Western Power Co., Ltd.		Cheongna Energy Co., Ltd.		Collateralized money invested			KRW 46,158			Kookmin Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Western Power Co., Ltd.		Xe-Pian Xe-Namnoy Power Co., Ltd.		Collateralized money invested			KRW 73,064			Krung Thai Bank
				Impounding bonus guarantees (*11)			USD 5,000			SK Eco Plant Co., Ltd.
Korea Western Power Co., Ltd.		Rabigh Operation & Maintenance Company Limited		Performance guarantees and others			SAR 11,200			National Bank of Kuwait
Korea Western Power Co., Ltd.		Dongducheon Dream Power Co., Ltd.		Collateralized money invested (*5)			KRW 54,242			Kookmin Bank and others
				Debt guarantees			KRW 20,300			HY western 1st co., Ltd
Korea Western Power Co., Ltd.		PT. Mutiara Jawa		Collateralized money invested			KRW 5,735			Woori Bank
Korea Western Power Co., Ltd.		Haeng Bok Do Si Photovoltaic Power Co., Ltd.		Collateralized money invested			KRW 361			Nonghyup Bank
Korea Western Power Co., Ltd.		Shin Pyeongtaek Power Co., Ltd.		Collateralized money invested			KRW 139,059			Kookmin Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Western Power Co., Ltd.		Haemodum Solar Co., Ltd.		Collateralized money invested			KRW 3,230			Nonghyup Bank
Korea Western Power Co., Ltd.		Muan Solar Park Co., Ltd.		Collateralized money invested			KRW 6,267			IBK and others
Korea Western Power Co., Ltd.		Anjwa Smart Farm & Solar City Co., Ltd.		Collateralized money invested			KRW 8,298			Hana Bank and others
Korea Western Power Co., Ltd.		Seoroseoro Sunny Power Plant Co., Ltd.		Collateralized money invested			KRW 1,030			Hana Bank and others
Korea Western Power Co., Ltd.		YuDang Solar Co., Ltd.		Collateralized money invested			KRW 617 —			Hana Bank and others
				Guarantees for supplemental funding (*1)
Korea Western Power Co., Ltd.		Hapcheon Floating Photovoltaic Power Plant Inc.		Collateralized money invested			KRW 11,334			Nonghyup Bank and others
Korea Western Power Co., Ltd.		Yeongwol Eco Wind Co., Ltd.		Collateralized money invested			KRW 890			Hana Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Western Power Co., Ltd.		Gurae Resident Power Co., Ltd.		Collateralized money invested			KRW 334			Hana Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Western Power Co., Ltd.		Gunsan Land Solar Co., Ltd.		Collateralized money invested			KRW 23,163			Hana Bank and others
Korea Western Power Co., Ltd.		Seobusambo highway photovoltaics Co., Ltd.		Collateralized money invested			KRW 3,310			Hana Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Western Power Co., Ltd.		Eumseong Eco Park Co., Ltd.		Collateralized money invested			KRW 11,613			Kyobo Life Insurance Co., Ltd. and others
Korea Western Power Co., Ltd.		PungBack Wind Farm Corporation		Collateralized money invested			KRW 7,760			Hanwha Life Insurance Co., Ltd. and others
Korea Western Power Co., Ltd.		Wadi Noor Solar Power Company SAOC		Loan payment guarantee			USD 54,855			DBS Bank
Korea Western Power Co., Ltd.		EDFR KOWEPO AJBAN HOLDING LIMITED		Loan payment guarantee			USD 57,090			FAB
Korea East-West Power Co., Ltd.		Seokmun Energy Co., Ltd.		Collateralized money invested			KRW 15,456			Kookmin Bank and others
				Guarantees for supplemental funding (*1)			—

Primary guarantor		Principal obligor		Type of guarantees		Credit limit				Creditor
						In millions of won and thousands of foreign currencies
Korea East-West Power Co., Ltd.		Chun-cheon Energy Co., Ltd.		Collateralized money invested			KRW 36,599			Kookmin Bank and others
				Guarantees for supplemental funding (*1)			KRW 90,800
Korea East-West Power Co., Ltd.		Honam Wind Power Co., Ltd.		Collateralized money invested			KRW 4,833			Shinhan Bank and others
Korea East-West Power Co., Ltd.		GS Donghae Electric Power Co., Ltd.		Collateralized money invested			KRW 279,432			Korea Development Bank and others
Korea East-West Power Co., Ltd.		Yeonggwangbaeksu Wind Power Co., Ltd.		Collateralized money invested			KRW 3,730			Kookmin Bank and others
Korea East-West Power Co., Ltd.		Yeonggwang Wind Power Co., Ltd.		Collateralized money invested			KRW 26,146			KDB Capital Corporation and others
Korea East-West Power Co., Ltd.		Daesan Green Energy Co., Ltd.		Collateralized money invested			KRW 25,331			IBK
				Guarantees for supplemental funding (*1)			—
Korea East-West Power Co., Ltd.		Taebaek Gadeoksan Wind Power Co., Ltd.		Collateralized money invested			KRW 22,908			Hana Bank and others
Korea East-West Power Co., Ltd.		PT. Tanjung Power Indonesia		Other guarantees			USD 3,150			PT. Adaro Indonesia
				Guarantees for supplemental funding (*1)			—			Sumitomo mitsui banking and others
				Collateralized money invested			KRW 100,579			MUFG and others
Korea East-West Power Co., Ltd.		South Jamaica Power Company Limited		Performance guarantees (*14)			USD 14,400			Hana Bank
				Collateralized money invested			KRW 48,761			JCSD Trustee Services Limited and others
Korea East-West Power Co., Ltd.		Bitsolar Energy Co., Ltd.		Collateralized money invested			—			Mirae Asset Life Insurance Co. Ltd. and others
Korea East-West Power Co., Ltd.		Cheongju Eco Park Co., Ltd.		Collateralized money invested			KRW 10,636			Kyobo Life Insurance Co., Ltd. and others
Korea East-West Power Co., Ltd.		Busan Industrial Solar Power Co., Ltd.		Collateralized money invested			KRW 1,160			Shinhan Bank and others
Korea East-West Power Co., Ltd.		Yangyang Wind Power Co., Ltd.		Collateralized money invested			KRW 11,640			Hana Bank and others
				Guarantees for supplemental funding (*1)			—
Korea East-West Power Co., Ltd.		KPE Green Energy Co., Ltd.		Collateralized money invested			KRW 8,230			Hana Bank and others
Korea East-West Power Co., Ltd.		Goheung New Energy Co., Ltd.		Collateralized money invested			KRW 4,818			Woori Bank and others
Korea East-West Power Co., Ltd.		Seungmun Green Energy		Collateralized money invested			KRW 12,745			Hana Bank and others
Korea East-West Power Co., Ltd.		Yanggu Floating Photovoltaic Power Plant Inc.		Collateralized money invested			KRW 846			Korea Development Bank
Korea East-West Power Co., Ltd.		Hoenggye Renewable Energy Co., Ltd.		Collateralized money invested			KRW 2,375			IBK
				Guarantees for supplemental funding (*1)			—
Korea East-West Power Co., Ltd.		Kumyang Eco Park Co., Ltd.		Collateralized money invested			KRW 3,841			Woori Bank and others
				Guarantees for supplemental funding (*1)			—
Korea East-West Power Co., Ltd.		Amaala Sustaninable Company for Energy LLC		Loan payment guarantee (*7)			USD 38,054			FAB
				Collateralized money invested			KRW 18
				Guarantees for supplemental funding (*1)			—
Korea Southern Power Co., Ltd.		Daeryun Power Co., Ltd.		Collateralized money invested			KRW 31,093			Korea Development Bank and others
Korea Southern Power Co., Ltd.		Daegu Green Power Co., Ltd.		Collateralized money invested			KRW 30,513			Shinhan Bank and others
				Performance guarantees			—
Korea Southern Power Co., Ltd.		Kelar S.A.		Performance guarantees			USD 30,030			Hana Bank, MUFG
				Payment guarantees (*12)			USD 11,707			Hana Bank
Korea Southern Power Co., Ltd.		Daehan Wind Power PSC		Performance guarantees			USD 1,800			Shinhan Bank
				Payment guarantees (*6)			USD 2,000			Hana Bank
				Collateralized money invested			KRW 21,328			Standard Chartered
Korea Southern Power Co., Ltd.		Pyeongchang Wind Power Co., Ltd.		Collateralized money invested			KRW 12,147			Woori Bank, Shinhan Bank and others
				Performance guarantees			—
Korea Southern Power Co., Ltd.		Taebaek Guinemi Wind Power Co., Ltd.		Collateralized money invested			KRW 13,559			IBK
Korea Southern Power Co., Ltd.		Samcheok Eco Materials Co., Ltd.		Payment guarantees (*2)			—			KIS SF the 22nd Co., Ltd.
				Performance guarantees (*15)			—			HC elementary materials
Korea Southern Power Co., Ltd.		Solaseado Solar Power Co., Ltd.		Collateralized money invested			KRW 16,979			Kookmin Bank and others
Korea Southern Power Co., Ltd.		Naepo Green Energy Co., Ltd.		Collateralized money invested			KRW 48,031			IBK and others

Primary guarantor		Principal obligor		Type of guarantees		Credit limit				Creditor
						In millions of won and thousands of foreign currencies
				Performance guarantees and guarantees for supplemental funding (*1)			KRW 30,000
Korea Southern Power Co., Ltd.		Omisan Wind Power Co., Ltd.		Collateralized money invested			KRW 10,859			Shinhan Bank and others
				Performance guarantees and guarantees for supplemental funding (*1)			—
Korea Southern Power Co., Ltd.		Geumsungsan Wind Power Co., Ltd.		Collateralized money invested			KRW 7,839			Kookmin Bank and others
Korea Southern Power Co., Ltd.		HORANG ENERGY Inc.		Collateralized money invested			KRW 3,808			Woori Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Southern Power Co., Ltd.		Haman Green Energy Co., Ltd.		Collateralized money invested			KRW 2,810			Hana Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Southern Power Co., Ltd.		Jeongeup Green Power Co., Ltd.		Collateralized money invested			KRW 8,847			Mirae Asset Securities Co., Ltd.
				Guarantees for supplemental funding (*1)			—
Korea Southern Power Co., Ltd.		HyChangwon Fuel Cell. Co., Ltd.		Collateralized money invested			KRW 9,277			Woori Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Southern Power Co., Ltd.		Roof One Energy Co., Ltd.		Collateralized money invested			KRW 2,000			Woori Bank
				Guarantees for supplemental funding (*1)			—
KOSPO Power Services Ltda.		Kelar S.A.		Performance guarantees			USD 1,316			Scotia bank
KOSPO Chile SpA		Kelar S.A.		Collateralized money invested			KRW 152,366			Export-Import Bank of Korea and others
KOSPO Chile SpA		Chester Solar I SpA		Collateralized money invested			KRW 1,649			IBK
KOSPO Chile SpA		Chester Solar IV SpA		Collateralized money invested			KRW 1,452			IBK
KOSPO Chile SpA		Chester Solar V SpA		Collateralized money invested			KRW 262			IBK
KOSPO Chile SpA		Diego de Almagro Solar SpA		Collateralized money invested			KRW 1,700			IBK
KOSPO Chile SpA		Laurel SpA		Collateralized money invested			KRW 1,432			IBK
Korea Midland Power Co., Ltd.		YeongGwang Yaksu Wind Electric Co., Ltd.		Collateralized money invested			KRW 41			IBK and others
Korea Midland Power Co., Ltd.		Hyundai Green Power Co., Ltd.		Collateralized money invested			KRW 87,392			Korea Development Bank and others
Korea Midland Power Co., Ltd.		PT. Cirebon Electric Power		Debt guarantees			USD 4,510			Mizuho Bank
Korea Midland Power Co., Ltd.		PT Wampu Electric Power		Debt guarantees			USD 4,716			PT. Bank KB Bukopin
Korea Midland Power Co., Ltd.		PT. Cirebon Energi Prasarana		Debt guarantees			USD 9,290			Mizuho Bank
Korea Midland Power Co., Ltd.		Green Energy Electricity Generation Co., Ltd.		Collateralized money invested			—			IBK
				Guarantees for supplemental funding (*1)			—
Korea Midland Power Co., Ltd.		Yaksu ESS Co., Ltd.		Collateralized money invested			KRW 163			IBK
Korea Midland Power Co., Ltd.		Gwangbaek Solar Power Investment Co., Ltd.		Collateralized money invested			KRW 5,155			Kyobo Life Insurance Co., Ltd. and others
Korea Midland Power Co., Ltd.		Muan Sunshine Solar Power Plant Co., Ltd.		Collateralized money invested			KRW 2,772			IBK
Korea Midland Power Co., Ltd.		Goesan Solar park Co., Ltd.		Collateralized money invested			KRW 3,133			IBK
Korea Midland Power Co., Ltd.		Bitgoel Eco Energy Co., Ltd.		Collateralized money invested			KRW 8,035			IBK and others
				Guarantees for supplemental funding (*1)			—
Korea Midland Power Co., Ltd.		Energyco Co., Ltd.		Collateralized money invested			KRW 2,322			Nonghyup Bank
Korea Midland Power Co., Ltd.		Jeju Gimnyeong Wind Power Co., Ltd.		Collateralized money invested			KRW 250			Nonghyup Bank
Korea Midland Power Co., Ltd.		Dongbu Highway Solar Co., Ltd.		Collateralized money invested			KRW 512			Shinhan Bank
Korea Midland Power Co., Ltd.		Seobu Highway Solar Co., Ltd.		Collateralized money invested			KRW 579			Shinhan Bank
Korea Midland Power Co., Ltd.		Yeongyang Wind Power Corporation II		Collateralized money invested			KRW 11,302			Korea Development Bank and others
Korea Midland Power Co., Ltd.		Haeparang Energy Co., Ltd.		Collateralized money invested			KRW 1,950			Templeton Hana Asset
				Guarantees for supplemental funding (*1)			—			Management Co., Ltd.
Korea Midland Power Co., Ltd.		Saemangeum Sebit Power Plant Co., Ltd.		Collateralized money invested			KRW 27,702			IBK and others
Korea Midland Power Co., Ltd.		Yeomsubong Wind Power Co., Ltd.		Collateralized money invested			KRW 603			Korea Development Bank
				Guarantees for supplemental funding (*1)			—
Korea South-East Power Co., Ltd.		Boim Combined Heat and Power Generation Co., Ltd.		Collateralized money invested (*3)			—			IBK
				Guarantees for supplemental funding and others (*1,4)			KRW 76,800			NH Investment & Securities Co., Ltd. and others
Korea South-East Power Co., Ltd.		RES Technology AD		Collateralized money invested			KRW 15,069			UniCredit Bulbank and others

Primary guarantor		Principal obligor		Type of guarantees		Credit limit				Creditor
						In millions of won and thousands of foreign currencies
Korea South-East Power Co., Ltd.		ASM-BG Investicii AD		Collateralized money invested			KRW 16,936			UniCredit Bulbank and others
Korea South-East Power Co., Ltd.		Goseong Green Power Co., Ltd.		Collateralized money invested			KRW 284,543			Kyobo Life Insurance Co., Ltd. and others
Korea South-East Power Co., Ltd.		Gangneung Eco Power Co., Ltd.		Collateralized money invested			KRW 241,814			Kyobo Life Insurance Co., Ltd. and others
Korea South-East Power Co., Ltd.		PND Solar Co., Ltd.		Collateralized money invested			KRW 1,736			IBK
Korea South-East Power Co., Ltd.		Hyundai Eco Energy Co., Ltd.		Collateralized money invested			KRW 8,493			Samsung Life Insurance and others
Korea South-East Power Co., Ltd.		Jaeun Resident Wind Power Plant Co., Ltd.		Collateralized money invested			KRW 2,045			IBK
Korea South-East Power Co., Ltd.		Chungsongmeon BongSan wind power Co., Ltd.		Collateralized money invested			KRW 2,590			Kyobo Life Insurance Co., Ltd. and others
Korea South-East Power Co., Ltd.		Yeongam Solar Power Co., Ltd.		Collateralized money invested			KRW 11,828			Kookmin Bank and others
Korea South-East Power Co., Ltd.		Samsu Wind Power Co., Ltd.		Collateralized money invested			KRW 2,851			Shinhan Bank and others
Korea South-East Power Co., Ltd.		Saemangeum Heemang Photovoltaic Co., Ltd.		Collateralized money invested			KRW 16,137			Woori Bank and others
Korea South-East Power Co., Ltd.		Nepal Water & Energy Development Company Private Limited		Collateralized money invested			USD 97,105			International Finance
				Business reserve payment guarantee			USD 33,333			Corporation and others
Korea South-East Power Co., Ltd.		Santiago Solar Power SpA		Debt guarantees (*8)			USD 8,000			Nonghyup Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Noeul Green Energy Co., Ltd.		Collateralized money invested			—			Hana Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Busan Green Energy Co., Ltd.		Collateralized money invested			KRW 2,334			Shinhan Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Go deok Clean Energy Co., Ltd.		Collateralized money invested			KRW 5,301			Kookmin Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Cheong-Song Noraesan Wind Power Co., Ltd.		Collateralized money invested			KRW 4,316			Woori Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Gwangyang Green Energy Co., Ltd.		Collateralized money invested			KRW 24,217			Shinhan Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Gangneung Sacheon Fuel Cell Co., Ltd.		Collateralized money invested			KRW 9,306			Hana Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Chuncheon Green Energy Co., Ltd.		Collateralized money invested			KRW 17,672			Hana Bank and others
				Guarantees for supplemental funding (*1)			—
Korea Hydro & Nuclear Power Co., Ltd.		Yangyang Suri Wind Power Co., Ltd.		Collateralized money invested			KRW 8,643			Kookmin Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Bigeum Resident Photovoltaic Power Co., Ltd.		Collateralized money invested			KRW 7,908			Kookmin Bank and others
Korea Hydro & Nuclear Power Co., Ltd.		Songsan Green Energy Co., Ltd.		Collateralized money invested			KRW 7,908			Hana Bank
Korea Hydro & Nuclear Power Co., Ltd.		Changwon Nu-ri Energy Co., Ltd.		Collateralized money invested			KRW 7,658			Hana Bank
Korea Hydro & Nuclear Power Co., Ltd.		Imha Floating Photovoltaic Power Plant Inc.		Collateralized money invested			KRW 6,351			Hana Bank
Korea Hydro & Nuclear Power Co., Ltd.		KAS INVESTMENT I LLC		Payment guarantees (*13)			USD 9,770			WOORI AMERICA BANK
Korea Hydro & Nuclear Power Co., Ltd.		KAS INVESTMENT II LLC		Payment guarantees (*13)			USD 9,730			WOORI AMERICA BANK

(*1) The Company guarantees to provide supplemental funding for business with respect to excessive business expenses or insufficient repayment of borrowings.

(*2) 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.

(*3) 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.

(*4) 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.

(*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 Jordan Tafila wind power project for opening L/C for Debt Service Reserve Account (DSRA).

(*7) The Company provided an EBL payment and EBL hedging guarantee to Amaala Sustainable Company for Energy LLC, an associate of the Company.

(*8) 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.

(*9) The credit limits of guarantees to RE Holiday Holdings LLC include the credit limits of guarantees to their subsidiaries.

(*10) 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.

(*11) 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.

(*12) The Company provided a payment guarantee to Chile Kelar project for opening L/C for Debt Service Reserve Account (DSRA), and others.

(*13) The credit limits of guarantees to KAS INVESTMENT I LLC, KAS INVESTMENT II LLC include the credit limits of guarantees to their subsidiaries.

(*14) The payment guarantee related to the gas combined cycle power project of South Jamaica Power Company Limited, a joint venture of the Company.

(*15) 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.

(8) Guarantees received from related parties as of December 31, 2024 are as follows:

Primary Guarantor		Type of guarantees						Credit limit
								In millions of won
KAPES, Inc.		Defect guarantees		￦					16,281
		Performance guarantees							38,231
		Advance payment guarantee							248,042
		Certification of bidding							79,818

(9) Derivatives transactions with related parties as of December 31, 2024 are as follows:

(i) Currency Swap

Counterparty		Contract year								Contract amounts								Contract interest rate per annum												Contract exchange rate (in won)
										Pay				Receive				Pay				Receive
		In millions of won and thousands of foreign currencies except contract exchange rate information
Korea Development Bank			2020~2025			￦					241,320				USD 200,000				0.54	%			1.13	%		￦					1,206.60
			2021~2026								118,170				USD 100,000				1.11	%			1.13	%							1,181.70
			2022~2026								283,820				USD 200,000				4.67	%			5.38	%							1,419.10
			2022~2028								283,820				USD 200,000				5.12	%			5.50	%							1,419.10
			2023~2026								256,000				USD 200,000				4.04	%			5.38	%							1,280.00
			2024~2027								864,890				USD 650,000				3.53	%			4.88	%							1,330.60
			2015~2025								111,190				USD 100,000				2.62	%			3.25	%							1,111.90
			2017~2027								111,610				USD 100,000				2.31	%			3.13	%							1,116.10
			2018~2028								108,600				HKD 800,000				2.69	%			3.35	%							135.75
			2019~2027								119,978				CHF 100,000				1.43	%			0.05	%							1,199.78
			2021~2026								111,400				USD 100,000				0.93	%			1.25	%							1,114.00
			2022~2027								262,000				USD 200,000				3.63	%			4.25	%							1,310.00
			2024~2028								257,880				USD 200,000				3.80	%			5.00	%							1,289.40
			2024~2028								128,940				USD 100,000				3.69	%			5.00	%							1,289.40
			2024~2029								138,540				USD 100,000				3.19	%			4.63	%							1,385.40
			2020~2026								118,910				USD 100,000				0.61	%			1.00	%							1,189.10
			2021~2026								114,230				USD 100,000				1.27	%			1.25	%							1,142.30
			2022~2027								123,710				USD 100,000				3.41	%			3.63	%							1,237.10
			2022~2025								128,560				USD 100,000				3.37	%			4.13	%							1,285.60
			2020~2025								122,780				USD 100,000				0.93	%			1.75	%							1,227.80
			2022~2025								252,360				USD 200,000				2.83	%			3.60	%							1,261.80
			2023~2028								129,500				USD 100,000				3.85	%			4.88	%							1,295.00

(ii) Currency forward

Counterparty

Contract date

Maturity date

Contract amounts

Contract exchange rate (in won)

Pay

Receive

In millions of won and thousands of foreign currencies except contract exchange rate information

Korea Development Bank

2024.12.16

2025.01.07

￦

27,247

USD 19,000

￦

1,434,04

2024.12.30

2025.01.17

17,627

USD 12,000

1,468.95

(10) The Company considers all standing directors of the Board who serve as executive officers responsible for planning, operations and/or control of business activities, as key management personnel, except a standing director who is a member of the Audit Committee. The Company recorded salaries and other compensations related to the key management personnel as follows:

Type						2022				2023				2024
						In millions of won
Salaries		￦					1,026				866				1,064
Retirement benefits							58				33				36
		￦					1,084				899				1,100

X

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