v3.26.1
Emissions Liabilities (Tables)
12 Months Ended
Dec. 31, 2025
Disclosure of quantity of emissions rights allocated free of charge [Abstract]  
Disclosure of Quantity of Emissions Rights Allocated Free of Charge
  (1)
The quantities of emissions rights allocated free of charge for each implementation year as of December 31, 2025 are as follows:
 
(In
tCO2-eQ)
 
    
Quantities

allocated

in 2021
    
Quantities
allocated

in 2022
    
Quantities
allocated

in 2023
    
Quantities
allocated

In 2024
    
Quantities
allocated

in 2025
    
Total
 
Emissions rights allocated free of charge(*)
     1,385,433        1,602,751        1,736,918        1,766,850        1,597,964        8,089,916  
 
(*)
Finalized changes in allocated quantities, including additional allocations, cancellations and other adjustments, have been reflected.
Disclosure of Changes in Emissions Rights Quantities
  (2)
Changes in the quantities of emissions rights held by the Group are as follows:
 
(In
tCO2-eQ)
 
    
Quantities

allocated in
2023
    
Quantities
allocated in
2024
    
Quantities
allocated in
2025
    
Total
 
Beginning
     306,575        414,356        517,280        1,238,211  
Allocation at no cost
     1,736,918        1,766,850        1,597,964        5,101,732  
Sale
     (56,266 )       (41,446 )       (250,738 )       (348,450 ) 
Surrender or shall be surrendered
     (1,572,871 )       (1,622,480 )       (1,864,506 )       (5,059,857 ) 
  
 
 
    
 
 
    
 
 
    
 
 
 
Ending
     414,356        517,280        —         931,636