v3.26.1
INFORMATION BY BUSINESS SEGMENT - Income from external customers per segment (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Segment      
Other operating revenues R$ 459,000 R$ 136,540 R$ 651,280
Total net operating income 41,281,594 40,181,552 37,158,908
Property, Plant and Equipment 39,659,177 36,854,056 35,805,422
Intangible assets 76,625,705 78,173,273  
Non-current assets 227,595,007 225,420,228  
Total      
Operating Segment      
Energy Supply 18,311,190 18,811,949 17,030,455
Power supply for end consumers 1,760,056 2,941,312 3,853,830
CCEE 5,698,648 3,278,465 1,680,285
O&M Revenue 9,984,077 10,789,254 11,387,237
Construction revenue 4,800,376 4,161,735 2,960,792
Contractual revenue 7,309,163 7,405,486 7,136,080
Other operating revenues 541,348 337,166 426,427
Deductions Operating revenues (7,123,265) (7,543,815) (7,316,198)
Total net operating income 41,281,593 40,181,552 37,158,908
Property, Plant and Equipment 39,659,176 36,854,056  
Intangible assets 76,625,705 78,173,273  
Non-current assets 169,852,544 171,711,025  
Generation      
Operating Segment      
Energy Supply 18,311,190 18,811,949 17,030,455
Power supply for end consumers 1,760,056 2,941,312 3,853,830
CCEE 5,698,648 3,278,465 1,680,285
O&M Revenue 1,977,831 3,063,896 4,052,072
Construction revenue 0 0 0
Contractual revenue 0 0 0
Other operating revenues 32,903 65,724 (104,270)
Deductions Operating revenues (3,940,439) (4,484,379) (4,378,811)
Total net operating income 23,840,189 23,676,967 22,133,561
Transmission      
Operating Segment      
Energy Supply 0 0 0
Power supply for end consumers 0 0 0
CCEE 0 0 0
O&M Revenue 8,006,246 7,725,358 7,335,165
Construction revenue 4,800,376 4,161,735 2,960,792
Contractual revenue 7,309,163 7,405,486 7,136,080
Other operating revenues 1,147 241,150 415,326
Deductions Operating revenues (3,118,161) (3,059,095) (2,932,286)
Total net operating income 16,998,771 16,474,634 14,915,077
Intangible assets 55,756 212,682  
Non-current assets 53,623,418 56,896,378  
Other Activities      
Operating Segment      
Energy Supply 0    
Power supply for end consumers 0    
CCEE 0    
O&M Revenue 0    
Construction revenue 0    
Contractual revenue 0    
Other operating revenues 507,298    
Deductions Operating revenues (64,665)    
Total net operating income 442,633    
Property, Plant and Equipment 688,840    
Intangible assets 442,131    
Non-current assets R$ 1,130,971    
Administration      
Operating Segment      
Energy Supply   0 0
Power supply for end consumers   0 0
CCEE   0 0
O&M Revenue   0 0
Construction revenue   0 0
Contractual revenue   0 0
Other operating revenues   30,292 115,371
Deductions Operating revenues   (341) (5,101)
Total net operating income   29,951 R$ 110,270
Property, Plant and Equipment   2,074,260  
Intangible assets   407,345  
Non-current assets   R$ 2,481,605