v3.26.1
Provision for de-characterization of dam structures and asset retirement obligations (Tables)
6 Months Ended
Jun. 30, 2026
Provision For De-characterization Of Dam Structures And Asset Retirement Obligations  
Schedule of provision for effects in income statements
       
  Three-month period ended June 30, Six-month period ended June 30,
  2026 2025 2026 2025
De-characterization of upstream geotechnical structures (53) (56) (56) (65)
Obligation for asset decommissioning (14) 4 (9) 12
Total (67) (52) (65) (53)
Schedule of changes in the provisions, de-characterization of dam structures located in Brazil
         
  Notes De-characterization of upstream geotechnical structures (i) Asset retirement obligations Environmental obligations Total
Balance as of December 31, 2025   2,097 3,621 444 6,162
Changes in estimates - amounts for closed plants charged to the income statement   (56) (9) (65)
Changes in estimates – capitalized value for operational plants   74 (2) 72
Disbursements   (134) (89) (49) (272)
Monetary and present value adjustments   84 90 15 189
Transfer to assets held for sale 27(b) (151) (151)
Translation adjustments   133 64 19 216
Balance as of June 30, 2026   2,124 3,600 427 6,151

(i) The cash outflows for de-characterization projects are estimated for a period up to 13 years and were discounted to present value at an annual rate in real terms, which increased from 7.77% on December 31, 2025 to 8.53% on June 30, 2026.

Schedule of changes in the provision of asset retirement obligations and environmental obligations
           
  Liability   Discount rate Cash flow maturity
 

June 30,

2026

December 31, 2025

June 30,

2026

December 31, 2025

June 30,

2026

December 31, 2025
Liability by geographical area            
Brazil 2,356 2,299 7.54% 7.17% 2163 2163
Canada 1,395 1,487 1.65% 1.81% 2152 2152
Oman 153 153 3.45% 3.48% 2035 2035
Other regions 123 126 2.90% 2.75% - -
  4,027 4,065        
Operating plants 2,798 2,961        
Closed plants 1,229 1,104        
  4,027 4,065