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INFORMATION BY BUSINESS SEGMENT - Income from external customers per segment (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Operating Segment |  |  |
Financial effect of Itaipu |  |  | R$ 294,934
Other operating income | R$ 136,540 | R$ 651,280 | 186,924
Reportable Segments |  |  |
Operating Segment |  |  |
Power supply for distribution companies | 18,811,949 | 17,030,455 | 14,104,623
Power supply for end consumers | 2,941,312 | 3,853,830 | 3,925,510
CCEE | 3,278,465 | 1,680,285 | 1,159,158
O&M revenue | 10,789,254 | 11,387,237 | 11,055,951
Construction revenue | 4,161,735 | 2,960,792 | 1,501,631
Financial effect of Itaipu |  |  | 287,610
Contract revenue | 7,405,486 | 7,136,080 | 7,901,256
Other operating income | 337,166 | 426,427 | 1,101,817
Deductions Operating revenues | (7,543,815) | (7,316,198) | (6,963,323)
Total net operating income | 40,181,552 | 37,158,908 | 34,074,233
Administration |  |  |
Operating Segment |  |  |
CCEE |  |  | 17,708
Financial effect of Itaipu |  |  | 287,610
Other operating income | 30,292 | 115,371 | 222,037
Deductions Operating revenues | (341) | (5,101) | (147,367)
Total net operating income | 29,951 | 110,270 | 379,988
Generation |  |  |
Operating Segment |  |  |
Power supply for distribution companies | 18,811,949 | 17,030,455 | 14,104,623
Power supply for end consumers | 2,941,312 | 3,853,830 | 3,925,510
CCEE | 3,278,465 | 1,680,285 | 1,141,450
O&M revenue | 3,063,896 | 4,052,072 | 4,676,630
Construction revenue |  |  | 7,324
Other operating income | 65,724 | (104,270) | 173,774
Deductions Operating revenues | (4,484,379) | (4,378,811) | (4,022,072)
Total net operating income | 23,676,967 | 22,133,561 | 20,007,239
Transmission |  |  |
Operating Segment |  |  |
O&M revenue | 7,725,358 | 7,335,165 | 6,379,321
Construction revenue | 4,161,735 | 2,960,792 | 1,494,307
Contract revenue | 7,405,486 | 7,136,080 | 7,901,256
Other operating income | 241,150 | 415,326 | 706,006
Deductions Operating revenues | (3,059,095) | (2,932,286) | (2,793,884)
Total net operating income | R$ 16,474,634 | R$ 14,915,077 | R$ 13,687,006

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