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v3.26.1

Property, plant and equipment (Tables) | 12 Months Ended
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Dec. 31, 2025
Notes and other explanatory information [abstract] |
Schedule of detailed information about property, plant and equipment |
Schedule of detailed information about property, plant and equipment |  |  |  |  |  |  |
|  |  |  |  |  |  | 2025
| Lands, dam and buildings | Machinery, equipment, and facilities | Assets and projects under construction | Asset retirement obligations | Mining projects (i) | Others | Total
Balance at the beginning of the year | 898,162 | 707,792 | 313,712 | 94,345 | 59,552 | 23,945 | 2,097,508
Cost | 1,673,095 | 2,487,702 | 381,216 | 188,759 | 208,627 | 34,817 | 4,974,216
Accumulated depreciation and impairment | (774,933) | (1,779,910) | (67,504) | (94,414) | (149,075) | (10,872) | (2,876,708)
Balance at the beginning of the year | 898,162 | 707,792 | 313,712 | 94,345 | 59,552 | 23,945 | 2,097,508
Additions | - | 2 | 351,857 | 8,304 | - | 10 | 360,173
Disposals and write-offs | (46) | (2,337) | (851) | - | - | (82) | (3,316)
Depreciation | (72,746) | (110,002) | - | (8,785) | (1,020) | (722) | (193,275)
Impairment reversal (loss) of long-lived assets - note 31 | 2,761 | (1,415) | (3,963) | 9,331 | 1,143 | 6 | 7,863
Foreign exchange effects | 75,273 | 60,144 | 11,260 | 10,522 | 710 | 1,832 | 159,741
Remeasurement | - | - | - | 3,093 | - | - | 3,093
Effect of new subsidiary acquisition | 571 | 55 | - | - | - | 228 | 854
Transfers | 156,214 | 52,087 | (202,601) | - | (4,707) | 38 | 1,031
Balance at the end of year | 1,060,189 | 706,326 | 469,414 | 116,810 | 55,678 | 25,255 | 2,433,672
Cost | 1,942,174 | 2,586,948 | 542,522 | 213,674 | 126,979 | 37,525 | 5,449,822
Accumulated depreciation and impairment | (881,985) | (1,880,622) | (73,108) | (96,864) | (71,301) | (12,270) | (3,016,150)
Balance at the end of year | 1,060,189 | 706,326 | 469,414 | 116,810 | 55,678 | 25,255 | 2,433,672
Average annual depreciation rates % | 4 | 11 | - | UoP | UoP | 8 |
|  |  |  |  |  |  | 2024
| Lands, dam and buildings | Machinery, equipment, and facilities | Assets and projects under construction | Asset retirement obligations | Mining projects (i) | Others | Total
Balance at the beginning of the year | 914,366 | 848,420 | 445,440 | 80,361 | 121,760 | 28,267 | 2,438,614
Cost | 1,710,083 | 2,896,565 | 512,925 | 219,449 | 215,913 | 44,601 | 5,599,536
Accumulated depreciation and impairment | (795,717) | (2,048,145) | (67,485) | (139,088) | (94,153) | (16,334) | (3,160,922)
Balance at the beginning of the year | 914,366 | 848,420 | 445,440 | 80,361 | 121,760 | 28,267 | 2,438,614
Additions | - | 667 | 276,839 | 45,891 | - | 85 | 323,482
Disposals and write-offs | (23) | (3,408) | (8,984) | - | (4,111) | (53) | (16,579)
Depreciation | (104,929) | (113,679) | - | (5,221) | (834) | (1,201) | (225,864)
Impairment reversal (loss) of long-lived assets - note 31 | 12,147 | 964 | (7,149) | 1,495 | (50,197) | 336 | (42,404)
Divestments | (2,990) | (4,265) | (290) | (1,377) | (4,150) | (381) | (13,453)
Foreign exchange effects | (163,559) | (133,501) | (34,196) | (16,857) | (2,946) | (4,369) | (355,428)
Remeasurement | - | - | - | (9,947) | - | - | (9,947)
Transfers | 243,150 | 112,594 | (357,948) | - | 30 | 1,261 | (913)
Balance at the end of year | 898,162 | 707,792 | 313,712 | 94,345 | 59,552 | 23,945 | 2,097,508
Cost | 1,673,095 | 2,487,702 | 381,216 | 188,759 | 208,627 | 34,817 | 4,974,216
Accumulated depreciation and impairment | (774,933) | (1,779,910) | (67,504) | (94,414) | (149,075) | (10,872) | (2,876,708)
Balance at the end of year | 898,162 | 707,792 | 313,712 | 94,345 | 59,552 | 23,945 | 2,097,508
Average annual depreciation rates % | 4 | 9 | - | UoP | UoP |  |
(i) Only mining projects of the operating unit Atacocha are being depreciated under the UoP method.

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