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Intangible assets (Details) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Statement [Line Items]    
Intangible Assets Cost, Beginning $ 77,041,982 $ 77,036,797
Transfers 4,728 5,185
Intangible Assets Cost, Ending 77,046,710 77,041,982
Intangible Assets Amortization, Beginning 65,277,276 57,207,530
Amortization For The Year 3,960,776 5,987,461
Impairment 33,495 2,082,285
Intangible Assets Amortization, Ending 69,271,547 65,277,276
Intangible Assets Net Book Value 7,775,163 11,764,706
Concession right    
Statement [Line Items]    
Intangible Assets Cost, Beginning 48,675,033 48,675,033
Transfers 0 0
Intangible Assets Cost, Ending 48,675,033 48,675,033
Intangible Assets Amortization, Beginning 44,616,155 42,586,716
Amortization For The Year 2,029,439 2,029,439
Impairment 0 0
Intangible Assets Amortization, Ending 46,645,594 44,616,155
Intangible Assets Net Book Value 2,029,439 4,058,878
Transmission lines for Achiras and La Castellana wind farms    
Statement [Line Items]    
Intangible Assets Cost, Beginning 3,972,012 3,966,827
Transfers 4,728 5,185
Intangible Assets Cost, Ending 3,976,740 3,972,012
Intangible Assets Amortization, Beginning 706,306 507,518
Amortization For The Year 198,937 198,788
Impairment 33,495 0
Intangible Assets Amortization, Ending 938,738 706,306
Intangible Assets Net Book Value 3,038,002 3,265,706
Turbogas and turbosteam supply agreements for thermal station Brigadier Lopez    
Statement [Line Items]    
Intangible Assets Cost, Beginning 24,394,937 24,394,937
Transfers 0 0
Intangible Assets Cost, Ending 24,394,937 24,394,937
Intangible Assets Amortization, Beginning 19,954,815 14,113,296
Amortization For The Year 1,732,400 3,759,234
Impairment 0 2,082,285
Intangible Assets Amortization, Ending 21,687,215 19,954,815
Intangible Assets Net Book Value $ 2,707,722 $ 4,440,122