v3.26.1
Operating costs and expenses
12 Months Ended
Dec. 31, 2025
Notes and other explanatory information [abstract]  
Operating costs and expenses

 

31Operating costs and expenses

 

         
  2025   2024   2023
Operational costs          
Salaries, payroll charges, and benefits (2,108,947)   (2,357,526)   (2,717,005)
Pension plan obligations (49,920)   (23,704)   (36,998)
Construction costs (Note 30) (14,437,363)   (6,085,895)   (5,474,729)
General supplies (363,122)   (345,771)   (356,481)
Treatment supplies (503,771)   (577,639)   (558,557)
Outsourced services (2,141,555)   (1,915,851)   (1,843,213)
Electricity (1,532,772)   (1,573,067)   (1,514,542)
General expenses (790,184)   (1,246,474)   (967,148)
Depreciation and amortization (2,064,054)   (2,477,146)   (2,583,193)
  (23,991,688)   (16,603,073)   (16,051,866)
           
Selling expenses          
Salaries, payroll charges, and benefits (260,098)   (335,382)   (347,536)
Pension plan obligations (7,017)   (3,825)   (3,359)
General supplies (18,599)   (4,679)   (6,746)
Outsourced services (397,062)   (423,964)   (439,995)
Electricity (1,650)   (658)   (673)
General expenses (2,334)   (98,800)   (116,933)
Depreciation and amortization (56,516)   (50,281)   (68,818)
  (743,276)   (917,589)   (984,060)
           
Bad debt expense, net of recoveries (Note 10 (c)) (62,067)   (557,789)   (652,920)
           
Administrative expenses          
Salaries, payroll charges, and benefits (333,274)   (602,217)   (423,948)
Pension plan obligations (135,423)   (78,428)   (122,248)
General supplies (6,080)   (108,901)   (23,008)
Outsourced services (287,318)   (391,637)   (287,744)
Electricity (125)   (1,297)   (2,020)
General expenses (75,429)   (898,587)   (509,984)
Depreciation and amortization (88,192)   (149,215)   (138,575)
Tax expenses (92,441)   (81,156)   (90,021)
  (1,018,282)   (2,311,438)   (1,597,548)
           
Total (25,815,313)   (20,389,889)   (19,286,394)
           
Operating costs and expenses          
Salaries, payroll charges, and benefits (2,702,319)   (3,295,125)   (3,488,489)
Pension plan obligations (Note 25 (iv)) (192,360)   (105,957)   (162,605)
Construction costs (Note 30) (14,437,363)   (6,085,895)   (5,474,729)
General supplies (387,801)   (459,351)   (386,235)
Treatment supplies (503,771)   (577,639)   (558,557)
Outsourced services (2,825,935)   (2,731,452)   (2,570,952)
Electricity (1,534,547)   (1,575,022)   (1,517,235)
General expenses (867,937)   (2,243,861)   (1,594,065)
Depreciation and amortization (2,208,762)   (2,676,642)   (2,790,586)
Tax expenses (92,441)   (81,156)   (90,021)
Allowance for doubtful accounts (Note 10 (c)) (62,067)   (557,789)   (652,920)
           
Total (25,815,313)   (20,389,889)   (19,286,394)