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v3.25.1

Commitments for Expenditure (Tables) | 12 Months Ended
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Dec. 31, 2024
Commitments for Expenditure [Abstract] |
Summary of Commitments For Acquisition of Property, Plant and Equipment |
(1) | The commitments related to acquisition of property, plant and equipment as of December 31, 2023 and 2024 are as follows:
|  |  |  |  | 2023 |  |  | 2024 |
Contracts |  |  |  |  | Commitment amounts |  |  | Remaining liability balances |  |  | Commitment amounts |  |  | Remaining liability balances |
|  |  |  |  | In millions of won |
Purchase of cable (PVC, 1C, 2000SQ) 153,000M and others (Shin-Bupyung-Youngseo) |  | ￦ |  |  |  |  | 57,226 |  |  |  | 417 |  |  |  | 57,226 |  |  |  | 417 |
Purchase of cable (PVC, 1C, 2500SQ) 103,374M and others (Bukdangjin-Shin-Tangjung) |  |  |  |  |  |  | 51,796 |  |  |  | 20,661 |  |  |  | — |  |  |  | — |
Purchase of GIS (362kV, 6300A, 63kA) 23CB – Youngseo S/S |  |  |  |  |  |  | 37,168 |  |  |  | 15,109 |  |  |  | 37,168 |  |  |  | 15,109 |
Purchase of GIS (362kV, 6300A, 63kA) 27CB – Kwangyang S/S |  |  |  |  |  |  | 37,744 |  |  |  | 140 |  |  |  | 37,744 |  |  |  | 140 |
Purchase of cable (PVC, 1C, 2500SQ) 100,548M and others (Kyungin Construction) |  |  |  |  |  |  | 58,271 |  |  |  | 746 |  |  |  | 58,271 |  |  |  | 746 |
Purchase of GIS (362kV, 6300A, 63kA) 25CB – Migeum S/S |  |  |  |  |  |  | 35,136 |  |  |  | 20,370 |  |  |  | 35,282 |  |  |  | 13,476 |
Purchase of cable (PVC, 1C, 2000SQ) 5,862M and others (Baekun-Gwangyanghang) |  |  |  |  |  |  | 35,016 |  |  |  | 703 |  |  |  | 35,016 |  |  |  | 703 |
Purchase of GIS (362kV, 6300A, 63kA) Type 19 – Shinyangsan S/S |  |  |  |  |  |  | 32,460 |  |  |  | 5,635 |  |  |  | — |  |  |  | — |
Purchase of cable (PVC, 1C, 2500SQ) 57,868M and others (Goduk-Seoansung) |  |  |  |  |  |  | 40,937 |  |  |  | 654 |  |  |  | 40,937 |  |  |  | 654 |
Purchase of cable (PVC, 1C, 2000SQ) 87,732M and others (Eulwangboonki) |  |  |  |  |  |  | 36,446 |  |  |  | 1,015 |  |  |  | 36,446 |  |  |  | 1,015 |
Purchase of GIS (362kV,6300A,63kA) Type 18 – Wolsung S/Y |  |  |  |  |  |  | 32,090 |  |  |  | 26,742 |  |  |  | 33,057 |  |  |  | 16,045 |
System stabilization ESS equipment (Bubuk S/S) Type 1 |  |  |  |  |  |  | 222,300 |  |  |  | 145,014 |  |  |  | 221,939 |  |  |  | 42,137 |
System stabilization ESS equipment (Shinnamwon S/S) Type 1 |  |  |  |  |  |  | 211,500 |  |  |  | 130,169 |  |  |  | — |  |  |  | — |
|  |  |  |  | 2023 |  |  | 2024 |
Contracts |  |  |  |  | Commitment amounts |  |  | Remaining liability balances |  |  | Commitment amounts |  |  | Remaining liability balances |
|  |  |  |  | In millions of won |
System stabilization ESS equipment (Yeongcheon S/S) Type 1 |  | ￦ |  |  |  |  | 73,104 |  |  |  | 18,604 |  |  |  | 72,779 |  |  |  | 16,975 |
Concrete pole (10M, general purpose, 500KGF) 111,000 ea and four other equipment |  |  |  |  |  |  | 67,996 |  |  |  | 39,971 |  |  |  | — |  |  |  | — |
Advanced EType low voltage electronic watt-hour meter 1,311,552 ea |  |  |  |  |  |  | 36,103 |  |  |  | — |  |  |  | — |  |  |  | — |
System stabilization ESS equipment (Yesan S/S) Type 1 |  |  |  |  |  |  | 56,403 |  |  |  | 12,095 |  |  |  | 56,174 |  |  |  | 11,471 |
System stabilization ESS equipment (Hamyang S/S) Type 1 |  |  |  |  |  |  | 35,609 |  |  |  | 12,870 |  |  |  | 35,764 |  |  |  | 11,468 |
Concrete pole (10M, general purpose, 500KGF) 90,000 ea and four other equipment |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 59,473 |  |  |  | 36,464 |
Purchase of cable (PVC, 1C, 2500SQ) 53,856M and others (Shinchungjuboonki) |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 31,925 |  |  |  | 7,756 |
Purchase of GIS (362kV, 6300A, 63kA) Type 31 – East Seoul S/S |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 39,060 |  |  |  | 39,060 |
Purchase of cable (PVC, 1C, 2000SQ) 68,613M and others (Dongducheon-Yangju) |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 40,933 |  |  |  | 28,790 |
Purchase of HVDC cable (PE, 2500SQ) 31,551M and others |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 40,323 |  |  |  | 40,323 |
Purchase of HVDC cable (PE, 2500SQ) 30,883M and others |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 40,130 |  |  |  | 40,130 |
Stationary reactive power compensation device (Phase 3, ±500MVAR) – Shin Jecheon S/S |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 39,300 |  |  |  | 39,300 |
Stationary reactive power compensation device (STATCOM, phase 3, ±500MVAR) – East coast #1C/S |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 37,600 |  |  |  | 37,600 |
AMIGO, 1P2W, 60(5)A, Electronic, Class 1.0, 220V, 1,031,728 EA – Annual Unit Price |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 43,054 |  |  |  | 38,404 |
Stationary reactive power compensation device (STATCOM/Phase 3, ±500MVAR) – Shin Gapyeong S/S |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 40,590 |  |  |  | 40,590 |
Stationary reactive power compensation device (STATCOM/Phase 3, ±500MVAR) – Shin Namwon S/S |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 37,100 |  |  |  | 37,100 |
Construction of Saeul Units (#3,4) |  |  |  |  |  |  | 9,800,424 |  |  |  | 1,113,349 |  |  |  | 11,718,217 |  |  |  | 1,748,342 |
Construction of Shin-Hanul Units (#1,2) (*) |  |  |  |  |  |  | 10,592,760 |  |  |  | — |  |  |  | 10,765,241 |  |  |  | — |
Construction of Shin-Hanul Units (#3,4) |  |  |  |  |  |  | 11,680,361 |  |  |  | 10,935,737 |  |  |  | 12,343,245 |  |  |  | 10,964,638 |
Other 40 contracts |  |  |  |  |  |  | 1,631,574 |  |  |  | 1,133,467 |  |  |  | 2,033,913 |  |  |  | 1,744,217 |
Purchase of main equipment for Jeju LNG Combined |  |  |  |  |  |  | 166,287 |  |  |  | — |  |  |  | — |  |  |  | — |
Purchase of equipment for the construction project of Boryeong indoor coal storage yard |  |  |  |  |  |  | 334,932 |  |  |  | 279,920 |  |  |  | 357,479 |  |  |  | 241,751 |
Purchase of main machine for Boryeong New Complex Unit 1 |  |  |  |  |  |  | 281,600 |  |  |  | 228,053 |  |  |  | 286,299 |  |  |  | 177,988 |
Boryeong New Complex Unit 1 Construction Project |  |  |  |  |  |  | 186,358 |  |  |  | 186,358 |  |  |  | 202,552 |  |  |  | 161,753 |
Haman Combined Power Block Conditional Purchase Agreement |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 581,790 |  |  |  | 543,509 |
Service of designing Taean Units (#9,10) |  |  |  |  |  |  | 112,909 |  |  |  | 12,468 |  |  |  | — |  |  |  | — |
Purchase of gas turbine and turbine equipment of Gimpo combined heat & power plant |  |  |  |  |  |  | 123,495 |  |  |  | 15,603 |  |  |  | 123,495 |  |  |  | 15,603 |
Purchase of steam turbine, HRSG and POWER BLOCK of Gimpo combined heat & power plant |  |  |  |  |  |  | 220,864 |  |  |  | 214 |  |  |  | 220,864 |  |  |  | 101 |
Construction of Gimpo combined heat & power plant |  |  |  |  |  |  | 211,372 |  |  |  | 13,960 |  |  |  | 223,660 |  |  |  | 8,795 |
Purchase of gas turbines, steam turbines, and accessories for Gumi natural gas power plant |  |  |  |  |  |  | 197,983 |  |  |  | 193,578 |  |  |  | 198,029 |  |  |  | 29,417 |
Purchase of heat recovery boiler and accessories for Gumi natural gas power plant |  |  |  |  |  |  | 65,918 |  |  |  | 45,299 |  |  |  | 65,918 |  |  |  | 12,574 |
Construction of Gumi natural gas power plant |  |  |  |  |  |  | 210,393 |  |  |  | 173,350 |  |  |  | 246,110 |  |  |  | 96,708 |
Installation of natural gas supply facility at Gumi natural gas power plant |  |  |  |  |  |  | 70,620 |  |  |  | 61,799 |  |  |  | 83,801 |  |  |  | 45,019 |
Construction of Gongju natural gas power plant |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 203,849 |  |  |  | 190,840 |
|  |  |  |  | 2023 |  |  | 2024 |
Contracts |  |  |  |  | Commitment amounts |  |  | Remaining liability balances |  |  | Commitment amounts |  |  | Remaining liability balances |
|  |  |  |  | In millions of won |
Purchase of natural gas main machine and accessories at Gongju natural gas power plant |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 305,829 |  |  |  | 273,338 |
Purchase of coal handling machine for construction of Samcheok Units (#1,2) |  |  |  |  |  |  | 312,150 |  |  |  | 5,682 |  |  |  | 326,395 |  |  |  | 5,905 |
Purchase of main equipment for Namjeju |  |  |  |  |  |  | 140,144 |  |  |  | 3 |  |  |  | 140,144 |  |  |  | — |
Purchase of main equipment for Shin-Sejong combined thermal power plant |  |  |  |  |  |  | 234,392 |  |  |  | 8,342 |  |  |  | 234,392 |  |  |  | 2,670 |
Purchase of Hadong thermal power indoor carboniferous plant |  |  |  |  |  |  | 167,259 |  |  |  | 48,495 |  |  |  | 167,259 |  |  |  | — |
Purchase of phase 2 power generation facility for Yeongwol fuel cells |  |  |  |  |  |  | 86,350 |  |  |  | 219 |  |  |  | 88,428 |  |  |  | — |
Purchase of fuel cell power generation facilities for the fifth stage of Shinincheon headquarters |  |  |  |  |  |  | 81,960 |  |  |  | 18,290 |  |  |  | 82,395 |  |  |  | — |
Purchase of Samcheok hydrogen compound co-firing facility infrastructure |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 128,820 |  |  |  | 90,876 |
Construction of Andong Combined Unit 2 Power Plant |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 181,593 |  |  |  | 175,029 |
Purchase of main equipment for Andong Combined Unit 2 |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 279,773 |  |  |  | 230,694 |
Service of designing Hadong Combined Unit 1 |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 31,593 |  |  |  | 26,351 |
(*) | As of December 31, 2024, the commitment amounts include the value of Shin-Hanul Unit #1, construction of which was completed during the year ended December 31, 2022. In addition, Shin-Hanul Unit #2 is in commercial operation as of December 31, 2024.
Summary of Commitments For Inventory Purchase |
(2) | As of December 31, 2024, details of contracts for inventory purchase commitment are as follows:
Type |  | Periods |  |  | Contracted quantity
Concentrate |  |  | 2024 ~ 2033 |  |  | 22,282 Ton U3O8
Conversion |  |  | 2024 ~ 2030 |  |  | 14,391 Ton U
Enrichment |  |  | 2024 ~ 2035 |  |  | 26,943 Ton SWU

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