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Commitments for Expenditure (Tables)
 12 Months Ended
Dec. 31, 2021
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, 2020 and 2021 are as follows:
 
 
  
 
 
  
2020
 
  
2021
 
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)
    ￦          56,574        16,038        57,046        16,240  
Purchase of cable (PVC, 1C, 2500SQ) 103,374M and others (Bukdangjin-Shin-Tangjung)
               45,390        32,876        46,616        34,102  
Purchase of GIS (362kV, 6300A, 63kA) 23CB – Youngseo S/S
               36,143        29,898        36,143        25,292  
Purchase of GIS (362kV, 6300A, 63kA) 26CB – Hwasung S/S
               40,010        8,328        40,010        5,540  
Purchase of GIS (362kV, 6300A, 63kA) 27CB – Kwangyang S/S
               37,744        2,244        37,744        140  
Purchase of cable (FR CNCO-W, 1C, 325SQ) 1,400,000M
               59,716        37,249        —          —    
Purchase of switch (Eco) 9,360 units
               40,631        24,031        —          —    
Purchase of cable (TR CNCE-W,1C,600SQ) 551,200M
               37,288        23,100        —          —    
Purchase of cable (TR CNCE-W/AL,1C,400SQ) 4,464,000M
               82,622        51,130        —          —    
Purchase of cable (FR CNCO-W,1C,325SQ) 1,092,000M
               42,068        35,358        —          —    
Concrete pole (10M, general purpose, 350KGF) 102,435 ea and five other equipments
               91,889        80,904        —          —    
Purchase of cable (PVC, 1C, 2500SQ) 100,548M and others
               —          —          56,860        34,576  
Purchase of GIS (362kV, 6300A, 63kA) 25CB – Migeum S/S
               —          —          32,000        26,700  
Advanced E-Type low-pressure electronic power meter 1,320,000 ea
               —          —          65,972        23,262  
Purchase of cable (PVC, 1C, 2000SQ) 5,862M and others (Baekun-Gwangyanghang)
               —          —          34,423        23,297  
Purchase of cable (TR CNCE- W,1C,325SQ) 1,016,000M
               —          —          66,581        40,254  
Purchase of cable (TR CNCE-W,1C,600SQ) 485,000M
               —          —          46,194        37,810  
Purchase of cable (TR CNCE-W/AL,1C,400SQ) 3,303,900M
               —          —          87,382        83,628  
Concrete pole (10M, general purpose, 350KGF) 126,948 ea and five other equipments
               —          —          188,338        168,456  
Purchase of GIS (362KV, 6300A, 63KA) 25 – Shinyangsan S/S
                                 31,464        31,464  
Construction of Shin-Kori Units (#5,6)
               8,625,387        3,256,117        9,800,424        3,479,667  
Construction of Shin-Hanul Units (#1,2)
               9,443,635        160,512        9,745,123        —    
Other 30 contracts
               107,586        58,466        792,485        620,593  
Service of designing Seoul Combined Units (#1,2)
               31,841        984        31,841        934  
Service of designing Shin-Boryeong Units (#1,2)
               121,163        521        121,114        —    
Purchase of furnace for construction of Shin-Seocheon Thermal Power Plant
               305,209        29,042        305,209        7,722  
Purchase of turbine generator for construction of Shin-Seocheon Thermal Power Plant
               105,226        8,279        105,226        6,301  
Electricity construction of Shin-Seocheon Thermal Power Plant
               282,234        13,524        340,356        —    
Purchase of main machine for Jeju LNG
Combined
               166,287        11,182        166,287        10,972  
Service of designing Taean
U
nits (#9,10)
               112,813        12,933        112,909        12,623  
Purchase of gas turbines and turbine equipment of Gimpo Combined Heat & Power Plant
               104,600        41,840        126,302        61,735  
Purchase of steam turbine, HRSG and Popwer Block of Gimpo Combined Heat & Power Plant
               210,900        147,630        214,053        138,244  
Construction of Gimpo Combined Heat & Power Plant
               —          —          130,015        86,323  
Purchase of coal handling machine for construction of Samcheok Units (#1,2)
               285,158        22,751        286,571        6,215  
Purchase of furnace main equipment for construction of Samcheok Units (#1,2)
               1,065,141        11,609        —          —    
Purchase of turbine main equipment for Samcheok
U
nits (#1,2)
               211,349        125        —          —    
Purchase of main equipment for Namjeju
               140,144        112        140,144        3  
Purchase of main equipment for Shin-Sejong Combined Thermal Power Plant
               —          —          234,392        200,122  
 
Summary of Commitments For Inventory Purchase Contract periods for ore concentrates, conversion, enrichment and design and fabrication are as follows:
Type
  
Periods
 
  
Contracted
quantity
Concentrate
      2020 ~ 2030      32,435 Ton U3O8
Transformed
      2020 ~ 2030      18,088 Ton U
Enrichment
      2020 ~ 2030      17,667 Ton SWU